Excitation integrated contactor

Abstract

The present disclosure relates to the technical field of circuit protection, and provides an excitation integrated contactor. A contact mechanism in the excitation integrated contactor comprises a static contact assembly, a moving contact assembly, and a first elastic assembly; a driving mechanism drives the moving contact assembly to move relative to the static contact assembly, so as to achieve opening and closing; the first elastic assembly acts on the moving contact assembly, and has an elastic tendency to engage the moving contact assembly with the static contact assembly; and an excitation mechanism is arranged opposite to the moving contact assembly, and when an excitation state is triggered, the excitation mechanism drives the moving contact assembly to move away from the static contact assembly. On the basis of having the opening and closing functions, the excitation mechanism can drive the moving contact assembly to quickly move away from the static contact assembly in an emergency state such as current overload, thereby overcoming the limitation of the response rate of the driving mechanism, achieving rapid circuit disconnection, improving the operation safety of the circuit system, and also realizing optimizations, such as contactor reuse, anti-reset after excitation disconnection, and prevention of high-pressure explosion, by means of form transformation.

Description

Integrated contactor with energizing function

[0001] The present application claims priority to Chinese Patent Application No. CN202410713369.0 entitled “Integrated Contactor with High Breaking Capacity” filed on June 4, 2024, Chinese Patent Application No. CN202410714678.X entitled “Integrated Contactor with Energizing Function” filed on June 4, 2024, and Chinese Patent Application No. CN202520485261.0 entitled “Integrated Contactor with Energizing Function” filed on March 19, 2025, the disclosures of which are incorporated herein in their entirety by this reference. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of circuit protection, and in particular, to an integrated contactor with energizing function. BACKGROUND

[0003] Currently, the protection measures for DC circuit systems (especially wind power, photovoltaic, energy storage, and electric vehicles) are fuses and contactors. The contactor mainly undertakes the connection and breaking of rated load and below current, and the fuse mainly undertakes the protective breaking in the case of overload and short circuit. However, due to the limited protection range of the fuse, the contactor sometimes also needs to break certain overload current. The breaking capacity of the contactor is limited, and when the fault current is too large, the contact will be welded and even explode.

[0004] Some contactors in the prior art usually disconnect the circuit when the current is overloaded, and reconnect the circuit when the current returns to the normal working range. However, in special cases, manually reconnecting the circuit may cause secondary accidents. In addition, if the conventional breaking method is used to separate the moving contact assembly and the static contact assembly in the current overload state, on the one hand, the breaking speed is slow, and it is difficult to reduce the safety hazards caused by current overload in time; on the other hand, large arcs are easily generated during the separation of the moving contact assembly and the static contact assembly, and even the arcs still exist after the separation is completed, thereby making it difficult to effectively disconnect the fault circuit. SUMMARY

[0005] The purpose of the present disclosure is to provide an integrated contactor with energizing function to alleviate the technical problem of weak performance of the contactor in breaking the current overload circuit in the prior art.

[0006] The integrated contactor provided by the present disclosure comprises a contact mechanism, a driving mechanism and an excitation mechanism; the contact mechanism comprises a static contact component, a dynamic contact component and a first elastic component; the driving mechanism drives the dynamic contact component to move relative to the static contact component to realize opening and closing; the first elastic component acts on the dynamic contact component and has a elastic tendency to make the dynamic contact component engage with the static contact component; the excitation mechanism is arranged opposite to the dynamic contact component and drives the dynamic contact component to move away from the static contact component when triggered.

[0007] In an optional embodiment, the excitation mechanism comprises an excitation gas source, a second elastic component and an excitation action component; the second elastic component has a fixed end and a free end, one of which is arranged opposite to the excitation gas source and the other is connected to the excitation action component; the second elastic component has a tendency to make the excitation action component move away from the dynamic contact component; an excitation cavity is formed between the excitation gas source and the excitation action component, and the excitation gas source releases gas into the excitation cavity to drive the excitation action component to push the dynamic contact component away from the static contact component when triggered.

[0008] In an optional embodiment, the integrated contactor has a gap flow channel connected to the excitation cavity; the second elastic component produces a recoverable elastic deformation when the excitation gas source is triggered, and the gas in the excitation cavity is released through the gap flow channel after the excitation gas source is shut down, and the second elastic component rebounds and drives the excitation action component to move away from the dynamic contact component.

[0009] In an optional embodiment, the recoverable elastic deformation of the second elastic component is a tensile elastic deformation, the fixed end is arranged towards the excitation gas source, and the free end is arranged towards the dynamic contact component; the free end is closed by itself or through the excitation action component to form an excitation cavity between the excitation gas source and the free end; the excitation gas source releases gas through the fixed end and drives the free end to make the excitation action component push the dynamic contact component away from the static contact component when triggered.

[0010] In an optional embodiment, the recoverable elastic deformation of the second elastic component is a compressive elastic deformation, the fixed end is arranged towards the dynamic contact component and is fixed relative to the shell, and the free end is arranged towards the excitation gas source; one end of the excitation action component is connected to the free end to form an excitation cavity between the free end and the excitation gas source, and the other end of the excitation action component passes through the second elastic component and is arranged towards the dynamic contact component; the excitation gas source releases gas to drive the free end to move towards the fixed end and make the excitation action component push the dynamic contact component away from the static contact component when triggered.

[0011] In an optional embodiment, the excitation gas source is inserted into the mounting seat, and the mounting seat is connected to the housing; the excitation gas source and the mounting seat have a gap flow channel therebetween, and / or the mounting seat and the housing have a gap flow channel therebetween; the gap flow channel is in fluid communication with the excitation cavity.

[0012] In an optional embodiment, the second elastic component is irreversibly deformed in a state where the excitation gas source is triggered to start, so as to push the excitation action component against the movable contact component, and maintain the state where the movable contact component is separated from the static contact component.

[0013] In an optional embodiment, the excitation cavity comprises a telescopic cavity formed by the second elastic component, and the volume of the telescopic cavity changes with the deformation of the second elastic component; the excitation cavity is in communication with the excitation gas source through a gas channel, and a second piston is interference-fitted in the gas channel to block the excitation cavity and the excitation gas source; in a state where the excitation gas source is triggered to start, the excitation gas source releases gas into the gas channel to drive the second piston, and the second piston blocks the gas channel to maintain the constant gas pressure in the telescopic cavity and prevent the second elastic component from rebounding.

[0014] In an optional embodiment, the excitation integrated contactor has a gap flow channel in communication with the excitation cavity, and the gap flow channel is sealed by glue filling; after the excitation gas source is triggered to start, the gas filled in the excitation cavity is sealed, so as to push the excitation action component against the movable contact component, and maintain the state where the movable contact component is separated from the static contact component.

[0015] In an optional embodiment, the excitation gas source and the housing have a spill cavity, the spill cavity is located at the end of the excitation gas source away from the excitation action component, and the spill cavity is in fluid communication with the excitation gas source.

[0016] In an optional embodiment, the second elastic component comprises an elastic bellows, and the inner cavity of the elastic bellows is configured as the excitation cavity.

[0017] In an optional embodiment, the excitation integrated contactor further comprises a normally open contact group and a fuse; the normally open contact group is connected in series with the fuse, and the normally open contact group and the fuse are connected in parallel with the static contact component and the movable contact component in the circuit; the excitation mechanism further comprises an engagement action component driven by the excitation gas source, and the engagement action component corresponds to the normally open contact group; in a state where the excitation gas source is triggered to start, the engagement action component connects the normally open contact group, and makes the fuse parallel to the circuit in which the static contact component and the movable contact component are located.

[0018] In an optional embodiment, the excitation integrated contactor further comprises an arc-extinguishing cavity and a cover device covering the arc-extinguishing cavity; the fuse has a fuse breaking site passing through the arc-extinguishing cavity; the cover device has a movable push rod corresponding to the fuse breaking site and arranged opposite to the engagement action component.

[0019] In an optional embodiment, the engaging action assembly comprises a sleeve, a first piston and a conductive member; the conductive member is connected to the first piston and faces the normally open contact group; the first piston is fitted in the sleeve and the end of the first piston away from the normally open contact group is in fluid communication with the energizing gas source.

[0020] In an optional embodiment, the energizing action assembly comprises a push rod and an end cap; one end of the push rod is opposite to the movable contact assembly and the other end of the push rod is fitted in the second elastic assembly; the end cap is arranged to increase the pressure in the area away from the movable contact assembly when the energizing gas source is triggered; the end cap tends to force the second elastic assembly to deform.

[0021] In an optional embodiment, the end cap has a breakable limiting part fitted in the housing;

[0022] When the energizing gas source is triggered and the pressure in the area away from the movable contact assembly is less than a preset value, the breakable limiting part remains intact and the push rod and the end cap remain fixed relative to the housing;

[0023] When the energizing gas source is triggered and the pressure in the area away from the movable contact assembly is greater than or equal to the preset value, the breakable limiting part breaks, the push rod and the end cap move relative to the housing and drive the movable contact assembly to separate from the stationary contact assembly.

[0024] In an optional embodiment, the contact mechanism and the driving mechanism are respectively installed in the housing; the housing has a partition plate inside and is divided into a first chamber and a second chamber by the partition plate; the stationary contact assembly is installed in the first chamber and the first chamber is filled with a gas arc-extinguishing medium; the driving mechanism is installed in the second chamber and is in transmission connection with the movable contact assembly.

[0025] In an optional embodiment, the driving mechanism comprises a movable guide rod sliding through the partition plate; the movable contact assembly is slidingly fitted on the movable guide rod and is driven by the first elastic assembly to abut against the end of the movable guide rod relative to the energizing mechanism.

[0026] In an optional embodiment, the partition plate is provided with an arc separation plate and the movable contact assembly is fitted in the limiting structure on the arc separation plate when the energizing mechanism drives the movable contact assembly to separate from the stationary contact assembly; and / or, the movable guide rod is provided with a limiting block and the limiting block abuts against the partition plate when the driving mechanism drives the movable contact assembly to separate from the stationary contact assembly; when the energizing mechanism drives the movable contact assembly to separate from the stationary contact assembly, the limiting block is automatically disconnected from the movable guide rod to increase the separation distance between the movable contact assembly and the stationary contact assembly.

[0027] In an optional embodiment, the energizing integrated contactor further comprises: an electromagnetic trigger mechanism, a microswitch and a switch reset spring; the electromagnetic trigger mechanism and the switch reset spring are respectively in transmission connection with the microswitch; the microswitch comprises a normally closed switch part and a normally open switch part, the normally closed switch part is in series connection with the power supply circuit of the driving mechanism, and the normally open switch part is in series connection with the power supply circuit of the energizing mechanism; the electromagnetic trigger mechanism is installed on the static contact assembly, and the electromagnetic trigger mechanism is configured to generate a driving force capable of overcoming the switch reset spring when the static contact assembly conducts current exceeding a preset value, so as to switch the normally closed switch part to an open circuit state and switch the normally open switch part to a closed state.

[0028] The embodiment of the present disclosure has the following beneficial effects: the contact mechanism comprises a static contact assembly, a moving contact assembly and a first elastic assembly, the driving mechanism drives the moving contact assembly to move relative to the static contact assembly to realize the basic opening and closing function. The first elastic assembly acts on the moving contact assembly and has an elastic tendency to make the moving contact assembly engage with the static contact assembly. The energizing mechanism is arranged opposite to the moving contact assembly, and under the condition of being triggered in the energizing state, the energizing mechanism drives the moving contact assembly to move away from the static contact assembly. In the emergency state of current overload, the moving contact assembly can be quickly driven away from the static contact assembly by the energizing mechanism, which overcomes the limitation of the response rate of the driving mechanism to realize the fast breaking of the circuit and improves the safety of the circuit system operation.

[0029] In order to make the above-mentioned purpose, features and advantages of the present disclosure more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the specific embodiments or related technologies of the present disclosure, the following will briefly introduce the drawings needed to be used in the specific embodiments or related technology description. Obviously, the drawings in the following description are some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creating any inventive labor.

[0031] Fig. 1 is a schematic diagram of an energizing integrated contactor provided by an embodiment of the present disclosure;

[0032] Fig. 2 is an exploded view of an energizing integrated contactor provided by an embodiment of the present disclosure;

[0033] Fig. 3 is a side view of an energizing integrated contactor provided by an embodiment of the present disclosure;

[0034] Fig. 4 is a cross-sectional view of A-A section in Fig. 3 in a normal opening state;

[0035] Fig. 5 is a cross-sectional view of A-A section in Fig. 3 in a normal closing state;

[0036] Figure 6 is a schematic view of the A-A section of Figure 3, showing the opening of the contactor at a large opening distance under the action of the actuating mechanism;

[0037] Figure 7 is a schematic view of a partial enlarged view of the position of an actuating mechanism of the actuating integrated contactor according to an embodiment of the present disclosure;

[0038] Figure 8 is a schematic view of a partial enlarged view of the position of another actuating mechanism of the actuating integrated contactor according to an embodiment of the present disclosure;

[0039] Figure 9 is a schematic view of the actuating integrated contactor with a sealing structure according to an embodiment of the present disclosure;

[0040] Figure 10 is a sectional view of another actuating integrated contactor according to an embodiment of the present disclosure;

[0041] Figure 11 is a schematic view of the mounting seat of the actuating integrated contactor according to an embodiment of the present disclosure;

[0042] Figure 12 is a top view of the actuating integrated contactor with a sealing structure according to an embodiment of the present disclosure;

[0043] Figure 13 is a schematic view of the actuating integrated contactor with an engaging action assembly according to an embodiment of the present disclosure;

[0044] Figure 14 is a side view of the actuating integrated contactor with an engaging action assembly according to an embodiment of the present disclosure;

[0045] Figure 15 is a sectional view of the A-A section of Figure 14;

[0046] Figure 16 is a sectional view of the B-B section of Figure 15;

[0047] Figure 17 is a sectional view of the C-C section of Figure 15;

[0048] Figure 18 is a schematic view of a partial enlarged view of the cooperation between the second piston and the air passage of the actuating integrated contactor according to an embodiment of the present disclosure;

[0049] Figure 19 is a schematic view of the actuating integrated contactor with an electromagnetic trigger mechanism and a micro switch according to an embodiment of the present disclosure;

[0050] Figure 20 is a schematic view of the circuit wiring of the actuating integrated contactor according to an embodiment of the present disclosure;

[0051] Figure 21 is a schematic view of the actuating integrated contactor with the conductive sheet extending to the bottom of the housing according to an embodiment of the present disclosure;

[0052] Figure 22 is a schematic view of the actuating integrated contactor with a spill cavity according to an embodiment of the present disclosure;

[0053] Figure 23 is a partial enlarged view of the connection between the push rod and the elastic bellows of the integrated contactor according to an embodiment of the present disclosure;

[0054] Figure 24 is a schematic view of the push rod of the integrated contactor according to an embodiment of the present disclosure;

[0055] Figure 25 is a schematic view of the end cap of the integrated contactor according to an embodiment of the present disclosure.

[0056] Figure 23 is a partial enlarged view of the connection between the push rod and the elastic bellows of the integrated contactor according to an embodiment of the present disclosure; DETAILED DESCRIPTION

[0057] The technical solutions of the present disclosure will be described clearly and completely below with reference to the drawings. It is obvious that the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present disclosure.

[0058] In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. In addition, the terms "first", "second", "third" are only used to describe the name difference, and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, such as basic quantities of the International System of Units, or derived quantities derived from basic quantities by multiplication, division, differentiation or integration, etc. Mathematical operations.

[0059] In the description of the present disclosure, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0060] As shown in FIG. 1, FIG. 2, FIG. 4, FIG. 5, FIG. 6, FIG. 10 and FIG. 17, the energizing integrated contactor provided by the embodiment of the present disclosure comprises: a contact mechanism 001, a driving mechanism 002 and an energizing mechanism 003; the contact mechanism 001 comprises a static contact assembly 110, a movable contact assembly 120 and a first elastic assembly 130; the driving mechanism 002 drives the movable contact assembly 120 to move relative to the static contact assembly 110 to realize opening and closing; wherein the driving mechanism 002 can drive the movable contact assembly 120 in a non-contact manner through electromagnetic force, or can use a connecting rod transmission or other transmission device to realize contact transmission to drive the movable contact assembly 120, and the driving mechanism 002 changes the position of the movable contact assembly 120, realizes the closing action when the movable contact assembly 120 contacts with the static contact assembly 110, and realizes the opening action when the movable contact assembly 120 separates from the static contact assembly 110.

[0061] The elastic force of the first elastic assembly 130 acts on the movable contact assembly 120, and the first elastic assembly 130 has an elastic tendency to make the movable contact assembly 120 engage with the static contact assembly 110. The energizing mechanism 003 is arranged opposite to the movable contact assembly 120, and under the condition that the energizing mechanism 003 is triggered in the energizing state, the energizing mechanism 003 drives the movable contact assembly 120 to move away from the static contact assembly 110.

[0062] The excitation mechanism 003 is driven at a higher speed than the driving mechanism 002, so as to accelerate the separation speed of the moving contact assembly 120 and the stationary contact assembly 110 when the excitation mechanism 003 is triggered.

[0063] Of course, the excitation mechanism 003 can also have a larger driving stroke, and the excitation mechanism 003 drives the moving contact assembly 120 away from the stationary contact assembly 110, and makes the moving contact assembly 120 and the stationary contact assembly 110 form a separation gap distance that exceeds the separation gap distance under the action of the driving mechanism 002, so as to improve the safety of the separation.

[0064] In addition, the excitation mechanism 003 is provided with a second elastic assembly 320, which is deformed when the excitation mechanism 003 is triggered. When the second elastic assembly 320 is elastically deformed and can be restored, the excitation mechanism 003 can be reset after a period of time, so that the contactor can restore the opening and closing functions. When the second elastic assembly 320 is limited by rebound or the second elastic assembly 320 is plastically deformed, the excitation mechanism 003 will maintain the triggered state, and the moving contact assembly 120 will be directly or indirectly driven, so as to always maintain the separation state with the stationary contact assembly 110.

[0065] In an optional embodiment, the excitation mechanism 003 includes an excitation gas source 310, a second elastic assembly 320, and an excitation action assembly 330. The second elastic assembly 320 has a fixed end 321 and a free end 322, one of which is arranged opposite to the excitation gas source 310, and the other is connected to the excitation action assembly 330. The second elastic assembly 320 has a tendency to move the excitation action assembly 330 away from the moving contact assembly 120. The excitation gas source 310 and the excitation action assembly 330 form an excitation cavity. When the excitation gas source 310 is triggered and started, the excitation gas source 310 releases gas to the excitation cavity to drive the excitation action assembly 330 to push the moving contact assembly 120 away from the stationary contact assembly 110.

[0066] In the initial state, the excitation gas source 310 is not triggered and started, and the excitation action assembly 330 is kept in the initial position under the action of the second elastic assembly 320. At this time, the excitation action assembly 330 is spaced apart from the moving contact assembly 120 by a certain distance. When the excitation gas source 310 is triggered and started, a large amount of gas is quickly generated through a physical and chemical reaction such as deflagration. The gas released by the excitation gas source 310 will suddenly increase the internal pressure of the excitation cavity, so as to push and press the excitation action assembly 330 to gradually approach and abut the moving contact assembly 120. Then, the moving contact assembly 120 will be pushed by the excitation action assembly 330, so as to realize the separation of the moving contact assembly 120 and the stationary contact assembly 110.

[0067] Referring to FIG. 4, FIG. 5 and FIG. 6, the energizing integrated contactor has a gap flow channel communicating with the energizing cavity; in the state that the energizing gas source 310 is triggered to start, the second elastic component 320 generates a recoverable elastic deformation, after the energizing gas source 310 stops, the gas in the energizing cavity is released through the gap flow channel, the second elastic component 320 rebounds and drives the energizing action component 330 to disengage from the movable contact component 120, thus the energizing action component 330 can be reset automatically after a period of time that the energizing mechanism 003 is triggered to start, after the energizing action component 330 is reset, the energizing integrated contactor restores the initial working state, and the movable contact component 120 can still be driven to open or close by the driving mechanism 002.

[0068] In an optional embodiment, the recoverable elastic deformation of the second elastic component 320 is tensile elastic deformation, the fixed end 321 is arranged towards the energizing gas source 310, and the free end 322 is arranged towards the movable contact component 120; the free end 322 is closed by itself or through the energizing action component 330, so as to form the energizing cavity between the energizing gas source 310 and the free end 322; in the state that the energizing gas source 310 is triggered to start, the energizing gas source 310 releases the gas to pass through the fixed end 321 and drive the free end 322, so as to push the movable contact component 120 away from the static contact component 110.

[0069] In another optional embodiment, the recoverable elastic deformation of the second elastic component 320 is compressive elastic deformation, the fixed end 321 is arranged towards the movable contact component 120, and the fixed end 321 is fixed relative to the shell 009, and the free end 322 is arranged towards the energizing gas source 310; one end of the energizing action component 330 is connected with the free end 322, and the free end 322 and the energizing gas source 310 form the energizing cavity, and the other end of the energizing action component 330 passes through the second elastic component 320 and is arranged towards the movable contact component 120; in the state that the energizing gas source 310 is triggered to start, the energizing gas source 310 releases the gas to drive the free end 322 to move towards the fixed end 321, and the energizing action component 330 pushes the movable contact component 120 away from the static contact component 110.

[0070] As shown in FIG. 4, FIG. 5, FIG. 6, FIG. 7, FIG. 9 and FIG. 10, the energizing gas source 310 is inserted into the mounting seat 350, and the mounting seat 350 is connected with the shell 009; the energizing gas source 310 and the mounting seat 350 have the gap flow channel, or the mounting seat 350 and the shell 009 have the gap flow channel; in addition, the gap flow channel can be formed between the energizing gas source 310 and the mounting seat 350, and the gap flow channel can also be formed between the mounting seat 350 and the shell 009. The gap flow channel is in fluid communication with the energizing cavity.

[0071] In an optional embodiment, the gap flow channel is retained. After the high-pressure gas is filled in the actuating cavity, the high-pressure gas can be slowly released through the gap flow channel. Thus, after a preset time period, the second elastic component 320 that can elastically recover can drive the actuating action component 330 to reset.

[0072] In another optional embodiment, in the state where the actuating gas source 310 is triggered to start, the second elastic component 320 produces irreversible deformation, so that the actuating action component 330 pushes against the movable contact component 120, and keeps the movable contact component 120 and the static contact component 110 in a state of being tripped. Thus, the movable contact component 120 and the static contact component 110 can be prevented from being in contact again to realize closing, and the contactor as a product that can be triggered only once as an actuating mechanism cannot be repeatedly used, but the stability of tripping after the actuating action is triggered is improved.

[0073] Further, the actuating cavity includes a telescopic cavity formed by the second elastic component 320 surrounding the telescopic cavity. The volume of the telescopic cavity changes with the deformation of the second elastic component 320. The actuating cavity is in communication with the actuating gas source 310 through the gas channel 360. The second piston 370 that blocks the actuating cavity and the actuating gas source 310 is in interference fit in the gas channel 360. In the state where the actuating gas source 310 is triggered to start, the actuating gas source 310 releases gas into the gas channel 360 to drive the second piston 370. The second piston 370 blocks the gas channel 360 to maintain the constant gas pressure in the telescopic cavity and prevent the second elastic component 320 from rebounding. In the case where the second elastic component 320 is blocked from rebounding and forms irreversible deformation, the second elastic component 320 can directly push against the movable guide rod 210, or push against the actuating action component 330 to push the movable guide rod 210, thereby preventing the movable guide rod 210 from resetting and keeping the movable contact component 120 and the static contact component 110 tripped.

[0074] In addition, the actuating integrated contactor has a gap flow channel in communication with the actuating cavity. The gap flow channel is sealed by glue filling. After the actuating gas source 310 is triggered to start, the gas filled in the actuating cavity is sealed, so that the actuating action component 330 pushes against the movable contact component 120 and keeps the movable contact component 120 and the static contact component 110 in a state of being tripped. The gap flow channel can be formed between the actuating gas source 310 and the mounting seat 350, and between the mounting seat 350 and the housing 009. The sealing structure 013 can be formed by glue filling in the gap flow channel, so as to prevent the high-pressure gas in the actuating cavity from leaking out, and thereby prevent the second elastic component 320 from rebounding and resetting.

[0075] The mounting seat 350 can also be processed as an integral structure with the housing 009. At this time, there is no gap between the mounting seat 350 and the housing 009, and glue filling is only performed between the actuating gas source 310 and the mounting seat 350.

[0076] In addition, the gas released by the excitation gas source 310 is enclosed in the excitation cavity, and the gas can be prevented from mixing with the gas in the arc-extinguishing chamber of the contactor, thus improving safety.

[0077] In other embodiments, an aperture can also be formed in the top or side of the second piston 370, thus helping to increase the gas flow rate during movement of the second piston 370, reducing the resistance experienced by the second piston 370, and thus improving the breaking speed.

[0078] Referring to FIGS. 10 and 11, the mounting seat 350 can be clamped to the housing 009 by the buckle 352, and the outer side wall of the mounting seat 350 can be provided with a groove 351, which can increase the clearance flow channel between the mounting seat 350 and the housing 009.

[0079] As shown in FIG. 22, the excitation gas source 310 has a diffusion cavity 017 between the excitation gas source 310 and the housing 009, the diffusion cavity 017 is located at the end of the excitation gas source 310 away from the excitation action assembly 330, and the diffusion cavity 017 is in fluid communication with the excitation gas source 310. When the excitation gas source 310 fills the high-pressure gas into the excitation cavity, as the gas pressure in the excitation cavity increases, part of the gas will flow into the diffusion cavity 017, on the one hand, to ensure that the internal pressure of the excitation cavity is sufficient to drive the excitation action assembly 330, and on the other hand, to achieve slow pressure relief, and to allow part of the gas to flow into the diffusion cavity 017, thus avoiding damage to the housing 009 due to insufficient space in the excitation cavity and excessively high gas pressure.

[0080] In optional embodiments, the second elastic assembly 320 includes an elastic bellow 323, and the inner cavity of the elastic bellow 323 can be configured as the excitation cavity. When the internal pressure of the excitation cavity increases, the elastic bellow 323 is elongated due to the pressure difference between the inside and outside, and when the internal pressure of the excitation cavity decreases, the elastic bellow 323 can be elastically contracted. Of course, if the elastic bellow 323 is driven to exceed the elastic deformation size by the pressure difference when the internal pressure of the excitation cavity increases, or the internal high-pressure gas impacts the weak part of the elastic bellow 323 to cause damage, theoretically, the purpose of causing irreversible deformation of the elastic bellow 323 can also be achieved.

[0081] As shown in FIG. 13, FIG. 14, FIG. 15 and FIG. 16, in an alternative embodiment, the energizing integrated contactor further comprises: a set of normally open contacts 004 and a fuse 005; the set of normally open contacts 004 is in series with the fuse 005, and the set of normally open contacts 004 and the fuse 005 are in parallel with the circuit in which the set of stationary contacts 110 and the set of movable contacts 120 are located; the energizing mechanism 003 further comprises an engaging action assembly 340 driven by the energizing gas source 310, the engaging action assembly 340 corresponds to the set of normally open contacts 004; when the energizing gas source 310 is triggered to start, the engaging action assembly 340 connects the set of normally open contacts 004, and makes the fuse 005 parallel to the circuit in which the set of stationary contacts 110 and the set of movable contacts 120 are located, so that the set of stationary contacts 110 and the set of movable contacts 120 can be tripped in a state close to zero current, thereby avoiding the generation of arc when tripping.

[0082] The split-end process comprises: the energizing gas source 310 is triggered to start, the first piston 342 is driven by gas pressure, and then the conductive part 343 is inserted into the set of normally open contacts 004 to make the fuse 005 parallel to the circuit in which the set of stationary contacts 110 and the set of movable contacts 120 are located. In addition, after the first piston 342 moves, it avoids the gas inlet end of the gas channel 360, the gas entering the gas channel 360 drives the second piston 370 to move, so that the second elastic assembly 320 can be deformed, and finally push the set of movable contacts 120 and the set of stationary contacts 110 to trip. After tripping, the fuse 005 can be melted, or the second elastic assembly 320 or the energizing action assembly 330 can continue to act and push the movable push rod 810 to cut off the fuse 005, so that the opening is safer and more reliable. By adjusting the length, caliber of the gas channel 360, and the size of the narrow neck of the fuse 005, the sequence of the opening time of the movable and stationary contacts and the melting time can be ensured. The time difference between the tripping action of the movable and stationary contacts and the connection of the fuse 005 can be controlled by adjusting the height size of the gas channel 360. By adjusting the distance between the movable push rod 810 and the fuse 005, the sequence of the disconnection of the contactor and the cutting off of the fuse 005 can be adjusted, so as to ensure that the parallel fuse 005 is connected first, then the movable and stationary contacts are disconnected, and then the fuse 005 is cut off.

[0083] In addition, the energizing integrated contactor further comprises: an arc-extinguishing cavity 006 and a cover device 008 covering the arc-extinguishing cavity 006; the fuse 005 has a melting site passing through the arc-extinguishing cavity 006; the cover device 008 has a movable push rod 810 corresponding to the melting site and oppositely arranged with the engaging action assembly 340. When the engaging action assembly 340 is driven, the movable push rod 810 can be pushed to cut off the fuse 005 or the wire on the fuse 005.

[0084] Referring to Fig. 16, the engaging action assembly 340 comprises a sleeve 341, a first piston 342 and a conductive member 343; the conductive member 343 is connected to the first piston 342, and the conductive member 343 is arranged towards the normally open contact group 004; the first piston 342 is fitted in the sleeve 341, and the end of the first piston 342 away from the normally open contact group 004 is in fluid communication with the energizing gas source 310. When the gas released by the energizing gas source 310 flows into the sleeve 341, the pressure difference can drive the first piston 342 to push the conductive member 343, and the conductive member 343 can be inserted between two contacts of the normally open contact group 004, thereby conducting the two contacts.

[0085] As shown in Fig. 4, Fig. 5, Fig. 6 and Fig. 15, in an optional embodiment, the contact mechanism 001 and the driving mechanism 002 are respectively installed in the housing 009; the housing 009 is internally provided with a partition plate 901, and is divided into a first chamber and a second chamber by the partition plate 901; the stationary contact assembly 110 is installed in the first chamber, and the first chamber is filled with a gas arc-extinguishing medium; the driving mechanism 002 is installed in the second chamber, and the driving mechanism 002 is in transmission connection with the movable contact assembly 120.

[0086] Further, the driving mechanism 002 comprises a movable guide rod 210 sliding through the partition plate 901; the movable contact assembly 120 is slidingly fitted on the movable guide rod 210, and the first elastic assembly 130 drives the movable contact assembly 120 to abut against the end head of the movable guide rod 210 arranged relative to the energizing mechanism 003.

[0087] In an optional embodiment, the partition plate 901 is provided with an arc separation plate 902, and when the energizing mechanism 003 drives the movable contact assembly 120 to separate from the stationary contact assembly 110, the movable contact assembly 120 is fitted on the limiting structure on the arc separation plate 902; or, the movable guide rod 210 is provided with a limiting block on the outer periphery, and when the driving mechanism 002 drives the movable contact assembly 120 to separate from the stationary contact assembly 110, the limiting block abuts against the partition plate 901, and when the energizing mechanism 003 drives the movable contact assembly 120 to separate from the stationary contact assembly 110, the limiting block is automatically disconnected from the movable guide rod 210 to increase the separation distance between the movable contact assembly 120 and the stationary contact assembly 110. Of course, the movable contact assembly 120 can be fitted on the limiting structure on the arc separation plate 902, and is provided with the limiting block for limiting relative to the partition plate 901, and can be disconnected under force when the energizing mechanism 003 is triggered to start.

[0088] As shown in FIG. 19 and FIG. 20, the excitation integrated contactor further comprises: an electromagnetic trigger mechanism 010, a micro switch 011 and a switch reset spring 012; the electromagnetic trigger mechanism 010 and the switch reset spring 012 are respectively in transmission connection with the micro switch 011; the micro switch 011 comprises a normally closed switch part 111 and a normally open switch part 112, the normally closed switch part 111 is in series connection with the power supply circuit of the driving mechanism 002, and the normally open switch part 112 is in series connection with the power supply circuit of the excitation mechanism 003; the electromagnetic trigger mechanism 010 is installed on the static contact assembly 110, and the electromagnetic trigger mechanism 010 is configured to generate a driving force capable of overcoming the switch reset spring 012 when the static contact assembly 110 conducts current exceeding a preset value, so as to switch the normally closed switch part 111 to an open circuit state and switch the normally open switch part 112 to a closed state. When the current is overloaded, the electromagnetic trigger mechanism 010 is triggered, the micro switch 011 is driven by the electromagnetic trigger mechanism 010 to perform a switching action, the normally closed contact A2 of the normally closed switch part 111 is disconnected, thereby cutting off the power supply to the driving coil 230 in the driving mechanism 002, the normally open contact A1 of the normally open switch part 112 is connected, thereby realizing the power supply to the excitation mechanism 003, and thus starting the excitation gas source 310.

[0089] As shown in FIG. 21, the power supply terminal of the excitation mechanism 003 can be connected by the conductive sheet 016, and the conductive sheet 016 is extended to the bottom of the housing 009, so that the power supply of the excitation mechanism 003 is connected at the bottom of the housing 009, which is far away from the static contact assembly 110 located at the top of the housing 009, thereby realizing the separation of high and low voltage and improving the safety of the connection.

[0090] As shown in FIG. 23 and FIG. 24, in an alternative embodiment, the elastic bellows 323 is sleeved with the push rod 332, the push rod 332 extends through the elastic bellows 323 to a position close to the moving contact assembly 120, and the end of the push rod 332 away from the moving contact assembly 120 is fixedly connected with the elastic bellows 323. In the case that one end of the elastic bellows 323 close to the moving contact assembly 120 is fixed, and the other end of the elastic bellows 323 away from the moving contact assembly 120 is telescopically movable, the airflow impacting the push rod 332 and the top of the elastic bellows 323 can compress the elastic bellows 323, the push rod 332 moves downward and pushes the moving contact assembly 120, thereby realizing the separation of the moving contact assembly 120 and the static contact assembly 110.

[0091] As shown in FIG. 23, FIG. 24 and FIG. 25, the energizing action assembly 330 comprises a push rod 332 and an end cap 333, one end of the push rod 332 is opposite to the movable contact assembly 120, the other end of the push rod 332 is fitted to the second elastic assembly 320, under the condition that the energizing gas source 310 is triggered, the pressure of the area opposite to the movable contact assembly 120 of the end cap 333 increases, the end cap 333 tends to force the second elastic assembly 320 to deform. In order to ensure that the elastic bellows 323 is uniformly stressed in the circumferential direction, the end cap 333 can be arranged at the end of the push rod 332 away from the movable contact assembly 120, the outer diameter of the end cap 333 is greater than the inner diameter of the elastic bellows 323, and the end cap 333 and the elastic bellows 323 can be sealingly connected by welding, bonding or other methods. By abutting the elastic bellows 323 with the end cap 333, the compression of the elastic bellows 323 is achieved. In alternative embodiments, the push rod 332 and the end cap 333 can be configured as an integral structure, or the push rod 332 and the end cap 333 can be configured as a split structure and assembled by snap connection or threaded connection.

[0092] In addition, the end cap 333 has a vulnerable limiting portion 334 fitted to the housing 009; when the energizing gas source 310 is triggered and the pressure of the area opposite to the movable contact assembly 120 of the end cap 333 is less than a preset value, the vulnerable limiting portion 334 remains intact and keeps the push rod 332 and the end cap 333 fixed relative to the housing 009, during which the pressure of the area opposite to the movable contact assembly 120 of the end cap 333 rapidly increases; when the energizing gas source 310 is triggered and the pressure of the area opposite to the movable contact assembly 120 of the end cap 333 is greater than or equal to the preset value, the vulnerable limiting portion 334 breaks or bends, the limiting of the end cap 333 is released, the push rod 332 and the end cap 333 can move quickly relative to the housing 009, and drive the movable contact assembly 120 to quickly separate from the stationary contact assembly 110, thereby improving the speed of the breaking action.

[0093] In order to more clearly describe the alternative embodiments, the details of the embodiments will be further supplemented below.

[0094] Referring to FIG. 1 to FIG. 7, the contactor comprises a driving mechanism 002 and a contact mechanism 001, the driving mechanism 002 and the contact mechanism 001 are respectively located in different chambers, the chamber where the driving mechanism 002 is located and the chamber where the contact mechanism 001 is located are separated by a partition plate 901, and an outer shell 009 is sleeved on the outer periphery of the chambers where the driving mechanism 002 and the contact mechanism 001 are located. The driving mechanism 002 and the contact mechanism 001 will be briefly described below.

[0095] The driving mechanism 002 comprises a driving coil 230, a moving iron core 220, a static iron core 240, a moving guide rod 210 and a counterforce spring, which are arranged in a chamber where the driving mechanism 002 is located. The driving coil 230 is provided with a magnetic conducting cylinder and a U-shaped yoke iron arranged outside. The moving iron core 220 is arranged in the magnetic conducting cylinder in a displaceable manner. The static iron core 240 is arranged at a partition plate 901. One end of the moving guide rod 210 is fixed to the moving iron core 220, and the other end of the moving guide rod 210 passes through the partition plate 901 and is located in a chamber where the contact mechanism 001 is located. The counterforce spring is arranged on the moving guide rod 210 between the moving iron core 220 and the partition plate 901.

[0096] A bushing 007 is arranged on the partition plate 901 to form a sealed chamber. The contact mechanism 001 is located in the sealed chamber formed by the bushing 007 and the partition plate 901. The sealed chamber where the contact mechanism 001 is located is filled with a gaseous arc extinguishing medium, such as inert gas or nitrogen.

[0097] The contact mechanism 001 comprises a moving contact assembly 120, a static contact assembly 110 and a first elastic assembly 130. The static contact assembly 110 is arranged at the top of the bushing 007. One end of the static contact assembly 110 is located outside the bushing 007 and passes through the top of the housing 009. The other end of the static contact assembly 110 is located inside the bushing 007.

[0098] The outer periphery and the end of the moving guide rod 210 located in the bushing 007 are respectively provided with limiting structures. The moving contact assembly 120 and the first elastic assembly 130 are sequentially arranged on the moving guide rod 210 between the limiting structures. One end of the first elastic assembly 130 abuts against the moving contact assembly 120. The first elastic assembly 130 is in a compressed state.

[0099] An arc separation plate 902 is arranged on the partition plate 901 around the moving contact assembly 120. Limiting structures are arranged on the arc separation plate 902. The limiting structures are used to limit the displacement distance of the moving contact assembly 120 when the moving contact assembly 120 is forced to be separated from the static contact assembly 110, so as to prevent the first elastic assembly 130 from being damaged when the moving contact assembly 120 is separated from the static contact assembly 110 with a large breaking distance.

[0100] When the driving coil 230 is powered, the static iron core 240 attracts the moving iron core 220. The moving iron core 220 drives the moving guide rod 210 to displace towards the static contact assembly 110, so that the moving contact assembly 120 is in conductive contact with the static contact assembly 110, thereby realizing normal closing of the contactor.

[0101] When the driving coil 230 is powered off, the moving iron core 220 is driven to displace away from the static iron core 240 under the joint action of the first elastic assembly 130 and the counterforce spring, so that the moving contact assembly 120 is separated from the static contact assembly 110, thereby realizing normal opening of the contactor.

[0102] In the chamber where the contact mechanism 001 of the contactor is located, an excitation gas source 310, an excitation action assembly 330, and an elastic member are also integrated.

[0103] The excitation action assembly 330 includes a carrier 331, a push rod 332, and a second elastic assembly 320. The second elastic assembly 320 can be a bellows, preferably made of steel. In this embodiment, the bellows is closed at one end and open at the other end. The open end of the bellows is the fixed end 321, and the closed end is the free end 322. A limiting flange structure is provided at the fixed end 321 of the bellows.

[0104] On the top of the bushing 007 between the two static contacts, a guide cylinder is provided which communicates between the inside and outside of the bushing 007, and one end of the guide cylinder protrudes outside the bushing 007. The elastic member is sleeved in the guide cylinder of the bushing 007, and the flange structure of the fixed end 321 of the elastic member is fixedly connected in a sealed manner at the end of the guide cylinder located outside the bushing 007, such as by welding. The free end 322 of the elastic member passes through the guide cylinder and is located inside the bushing 007, and the excitation action assembly 330 is fixedly connected to the free end 322 of the elastic member.

[0105] The mounting seat 350 extends to the top of the bushing 007, and the mounting seat 350 is provided with a through hole corresponding to the position of the static contact assembly 110 and a mounting boss corresponding to the position of the guide cylinder of the bushing 007, which protrudes towards the housing 009. Two through mounting holes are provided on the mounting boss corresponding to the guide cylinder, and a limiting step is provided in the mounting hole. The through hole of the mounting seat 350 is sleeved on the outer periphery of the static contact assembly 110 between the housing 009 and the bushing 007, and the mounting hole of the mounting seat 350 is sleeved on the outer periphery of the guide cylinder at the top of the bushing 007, and the end face of the guide cylinder abuts against the limiting step of the mounting hole. The housing 009 passes through the mounting boss of the static contact assembly 110 and the mounting seat 350, and the mounting seat 350 is tightly fixed between the bushing 007 and the housing 009. The excitation gas source 310 is installed in the mounting hole of the mounting seat 350 and closes the mounting hole. The signal receiving end of the excitation gas source 310 passes through the housing 009 and is located outside the housing 009, the driving force releasing end is located in the elastic member, and a sealed cavity is formed between the driving force releasing end of the excitation gas source 310 and the free end 322 of the elastic member. When the excitation gas source 310 releases high-pressure gas, the high-pressure gas can fully act on the free end 322 of the elastic member.

[0106] The excitation action assembly 330 is fixedly connected to the free end 322 of the elastic member, and is connected by welding. The excitation action assembly 330 includes a carrier 331 and a push rod 332. In this embodiment, the carrier 331 and the push rod 332 are integrally formed, and the forming method is preferably injection molding. The carrier 331 is fixedly connected to the elastic member, and the push rod 332 is fixedly connected to the carrier 331. The push rod 332 is made of insulating material. One end of the push rod 332 facing the moving contact assembly 120 is provided with a groove 351 penetrating through the opposite sides of the push rod 332. The groove 351 has a shape of an eight-character. The inner diameter of the opening end of the groove 351 with the shape of an eight-character is greater than the width of the end of the moving guide rod 210 facing the static contact assembly 110. The bottom of the groove 351 with the shape of an eight-character of the push rod 332 is opposite to the moving guide rod 210. The two ends of the groove 351 with the shape of an eight-character of the push rod 332 facing the moving contact assembly 120 span the ends of the moving guide rod 210, and are opposite to the moving contact assemblies 120 on both sides of the moving guide rod 210. In the normal on-off process of the contactor, the moving contact assembly 120, the moving guide rod 210 and the push rod 332 are not in contact, and the end of the moving guide rod 210 is in the groove 351 of the push rod 332 to avoid contact. When the push rod 332 is in contact with the moving contact assembly 120, the two sides of the opening end of the groove 351 with the shape of an eight-character of the push rod 332 facing the moving contact assembly 120 are in contact with the moving contact assemblies 120 on both sides of the moving guide rod 210, respectively, and the moving contact assembly 120 is pushed to displace relative to the moving guide rod 210, so as to realize the opening of the moving contact assembly 120 and the static contact assembly 110.

[0107] Since the free end 322 of the elastic member is closed, a sealed cavity is formed between the excitation action assembly 330 and the release end of the driving force of the excitation gas source 310.

[0108] In the normal working state, the contactor is in the normal working state, and the excitation gas source 310 and the excitation action assembly 330 are not in action.

[0109] In the overload, short circuit or abnormal situation, the excitation gas source 310 receives the trigger signal and is in action, releases high-pressure gas as driving force, drives the excitation action assembly 330 to displace, and the push rod 332 of the excitation action assembly 330 drives the moving contact assembly 120 to displace, so that the moving contact assembly 120 and the static contact assembly 110 are in large-gap opening. The large-gap opening position of the moving contact assembly 120 is limited by the limiting structure on the upper end of the arc separation plate 902. In the large-gap opening, the distance between the moving contact assembly 120 and the static contact assembly 110 is greater than that in the normal opening. In the opening process, the elastic member is stretched in the direction of the moving contact assembly 120 when the excitation action assembly 330 is displaced, and the elastic deformation can be restored to the initial position.

[0110] When the moving contact assembly 110 is forced to open the large fracture, the arc is extinguished, and the pressure of the high-pressure gas released by the excitation gas source 310 gradually decreases to a certain extent, and the driving force is less than the elastic force of the elastic member and the first elastic assembly 130. Under the combined action of the elastic force of the elastic member and the first elastic assembly 130, the moving contact assembly 120 is displaced to the normal open position, and the excitation action assembly 330 continues to be displaced to the initial position under the elastic force of the elastic member, realizing the reset of each mechanism.

[0111] When maintenance and replacement are needed, the excitation gas source 310 and the mounting seat 350 are located outside the bushing 007, which does not affect the installation of the elastic member inside the bushing 007 and the sealing, and because the elastic member is sealingly installed, when the excitation gas source 310 acts, the driving force released by the excitation gas source 310 acts on the excitation action assembly 330 through the elastic member. When the excitation gas source 310 acts, it does not affect the internal structure of the sealed chamber formed by the bushing 007 and the partition plate 901, so the mounting seat 350 and the excitation gas source 310 can be directly replaced, and the next circuit can be opened. All-around protection.

[0112] By integrating the excitation gas source 310, the second elastic assembly 320, and the excitation action assembly 330, the breaking capacity of the contactor is improved, and the breaking in abnormal situations is improved, and the response speed of the contactor is improved.

[0113] Through the elastic deformation of the elastic member that can recover to the initial position, the displaced mechanisms can recover to the initial position, and only the excitation action assembly 330 needs to be replaced, which is convenient for maintenance and reduces maintenance costs.

[0114] In the above embodiment, one end of the bellows is open and the other end is closed. In other embodiments, both ends of the bellows are through, one end is a fixed end 321, and the other end is a free end 322. The excitation action assembly 330 is connected to the free end 322 of the bellows by welding, and the free end 322 of the bellows is closed by the excitation action assembly 330, so that a sealed cavity is formed between the excitation action assembly 330 and the driving force release end of the excitation gas source 310.

[0115] In the above embodiment, the bellows is directly fixedly connected to the excitation action assembly 330. Due to the elasticity of the bellows, the initial position of the excitation action assembly 330 will have a small change when shaken under the action of gravity. However, this change does not affect the normal opening and closing action of the contactor and the excitation action.

[0116] In order to further improve the stability of the initial position of the excitation action assembly 330, the excitation action assembly 330 is not directly connected to the bellows.

[0117] Referring to FIG. 3 to FIG. 8, FIG. 10, FIG. 17 and FIG. 22, a guide cylinder can be added outside the second elastic assembly 320, and the two ends of the guide cylinder protrude out of the outer surface and the inner surface of the bushing 007 respectively. The second elastic assembly 320 includes a bellows with two ends through it. The second elastic assembly 320 can be connected to the end of the excitation gas source 310 as a free end 322, and located in the guide cylinder; and connected to the end of the moving contact assembly 120 and fixed on the end face of the guide cylinder. A connecting insert is sleeved in the second elastic assembly 320, which can be made of metal or other materials. The insert is a tubular structure, one end of which is sealed and fixedly connected with the end of the free end 322 in the guide cylinder, and the other end is fixedly connected with the excitation action assembly 330. When the end of the insert is connected with the free end 322, it is achieved by sealing and connecting one end of the tubular wall of the insert and one end of the tubular wall of the elastic member, and the sealing and connecting can be achieved by welding, so that the high-pressure gas released by the excitation gas source 310 enters the hollow part of the insert, but does not enter between the insert and the second elastic assembly 320.

[0118] The driving force release end of the excitation gas source 310 is located in the guide cylinder. The connection between the insert and the free end 322 is a sealed connection, such as a welded connection, and the end of the insert fixedly connected with the excitation action assembly 330 is closed, which can be closed by itself or by the excitation action assembly 330 connected thereto, so that the excitation action assembly 330 and the driving force release end of the excitation gas source 310 become a sealed cavity.

[0119] In the initial position, the excitation action assembly 330 and the insert are supported by the bellows.

[0120] When the driving force released by the excitation gas source 310 drives the excitation action assembly 330 to displace, the excitation action assembly 330 drives the insert to displace, and the driving moving contact assembly 120 and the static contact assembly 110 are separated by a large gap. When the excitation action assembly 330 drives the insert to displace, the insert drives the free end 322 of the bellows to displace along the inner wall of the guide cylinder, compresses the bellows, and causes the bellows to elastically deform and recover to the initial position;

[0121] When the moving and static contact assemblies 110 are forcibly separated, the arc is extinguished, the pressure of the high-pressure gas released by the excitation gas source 310 gradually decreases to a certain extent, and the driving force is less than the elastic force of the elastic member and the first elastic assembly 130, under the joint action of the elastic force of the elastic member and the first elastic assembly 130, the moving contact assembly 120 is displaced to the normal separation position, and the excitation action assembly 330 continues to displace to the initial position under the elastic force of the elastic member, so as to reset each mechanism.

[0122] In the above embodiments, when the moving contact assembly 120 is driven, a limiting structure is needed to limit the large gap opening position of the moving contact assembly 120 to prevent damage to the first elastic assembly 130. In other embodiments, the limiting structure can not be provided. The elastic member is provided in the guide cylinder integrally formed on the bushing 007, and the second elastic assembly 320 can also serve as the elastic member. A fixed plate is fixed on the end face of the guide cylinder towards the moving contact assembly 120, and the fixed plate is used to bear the fixing action. The end of the elastic member towards the moving contact assembly 120 is fixed on the fixed plate to form a fixed end 321, and the other end of the elastic member towards the excitation gas source 310 is a free end 322. A positioning spring and a disc spring are provided in the elastic member in sequence from the excitation gas source 310 to the moving contact assembly 120, a gasket is provided between the positioning spring and the disc spring, the disc spring is located above the fixed plate, and the fixed plate supports the elastic member and the disc spring. When the disc spring is compressed, the fixed plate is used to bear the elastic force of the compressed disc spring, and the disc spring supports the positioning spring through the gasket.

[0123] The excitation action assembly 330 includes a piston and a push rod 332. The piston is provided in the elastic member, the piston head of the piston is located at the free end 322 of the elastic member and is sealingly and fixedly connected with the end of the free end 322 of the elastic member, the free end 322 of the elastic member is closed by the piston head of the piston, and the sealing and fixed relationship with the fixed end 321 of the elastic member is matched, so that the high-pressure gas released by the excitation gas source 310 cannot enter the chamber where the contact mechanism 001 of the contactor is opened and closed, thereby ensuring that the gas inside the contactor is not contaminated and preventing leakage of the gas inside the contactor. The sealing and fixed relationship of the fixed end 321 of the elastic member includes that the fixed end 321 of the elastic member is sealingly and fixedly connected to the inner wall surface or the outer wall surface of the guide cylinder, or the fixed plate having the sealing and fixed connection relationship with the fixed end 321 of the elastic member is sealingly and fixedly connected to the inner wall surface or the outer wall surface of the guide cylinder; when the fixed end 321 of the elastic member or the fixed plate is sealingly and fixedly connected to the inner wall surface of the guide cylinder, the overall height of the product is smaller.

[0124] The piston head of the piston can be in slidable sealing contact with the inner wall of the guide cylinder or the inner wall surface of the mounting seat 350 mounting the excitation gas source 310, or can be in clearance fit with the inner wall of the guide cylinder or the inner wall surface of the mounting seat 350 mounting the excitation gas source 310. When it is in sealing contact, it can be achieved by providing a sealing ring on the outer periphery of the piston head, so that the utilization rate of the high-pressure gas released by the excitation gas source 310 is higher.

[0125] When the fixed end 321 of the elastic member is provided with a fixed plate: the fixed end 321 of the elastic member can be sealingly fixedly connected to the end face of the guide cylinder towards the moving contact assembly 120 (the inner wall surface of the guide cylinder) or sealingly fixed to the end face of the guide cylinder towards the gas release end of the excitation gas source 310 (the outer wall surface of the guide cylinder), the fixed plate fixed to the fixed end 321 of the elastic member can be used to bear the disc spring or other elastic elements provided in the elastic member, at this time, the fixed plate can also be sealingly fixed to the fixed end 321 of the elastic member. Alternatively, the fixed plate can be sealingly fixedly connected to the end face of the guide cylinder towards the moving contact assembly 120 (the inner wall surface of the guide cylinder) or sealingly fixed to the end face of the guide cylinder towards the gas release end of the excitation gas source 310 (the outer wall surface of the guide cylinder), and the fixed end 321 of the elastic member is sealingly fixedly connected to the fixed plate. While bearing the disc spring or other elastic elements inside the elastic member, it prevents gas leakage between the fixed plate and the fixed end 321 of the elastic member. At the same time, in cooperation with the sealing and fixed relationship between the piston head and the end of the free end 322 of the elastic member, the high-pressure gas released by the excitation gas source 310 can be separated from the gas inside the contactor, and the high-pressure gas released by the excitation gas source 310 can be prevented from entering the chamber where the contact mechanism 001 of the contactor is located when the contacts are opened and closed, thereby contaminating the gas inside the contactor. The piston rod of the piston passes through the positioning spring in the elastic member, and the disc spring and the fixed plate are fixedly connected to the push rod 332 located below the fixed plate. In the initial position, the piston and its push rod 332 are supported and positioned by the combined elastic force of the fixed plate, the positioning spring, the disc spring and the elastic member. The piston head is provided with a drive release end corresponding to the driving force of the excitation gas source 310.

[0126] In normal working condition, the excitation gas source 310 does not act, and the contactor normally opens and closes.

[0127] In overload, short circuit or abnormal condition: when the excitation gas source 310 acts, the piston drives the push rod 332 to displace the moving contact assembly 120 and the static contact assembly 110 to forcibly open the large gap, in the process of displacement of the piston driving the push rod 332, the piston drives the free end 322 of the elastic member to displace and compress the elastic member towards the fixed end 321, the piston compresses the positioning spring, when the positioning spring is compressed to a certain extent, the piston drives the positioning spring to continue to compress the disc spring. Because the disc spring can provide a large counterforce under a small displacement, the piston rapidly decelerates to a standstill under the action of the counterforce of the disc spring, and the moving contact assembly 120 also stops displacement under the action of the elastic force of the first elastic assembly 130, thereby realizing the large gap opening between the moving contact assembly 120 and the static contact assembly 110. The opening distance between the moving contact assembly 120 and the static contact assembly 110 is determined by the size of the counterforce provided to the piston.

[0128] When the gas pressure in the space formed by the excitation gas source 310 and the piston is lower than the combined counterforce of the first elastic component 130, the elastic bellows 323, the positioning spring and the disc spring, the piston, the push rod 332 and the elastic member return to the initial position under the combined action of the elastic force, and the movable contact assembly 120 returns to the initial position in the normal open position under the action of the first elastic component 130. Referring to FIG. 8, the positioning spring and the disc spring can serve as additional elastic members 324, which have the same elastic force direction as the elastic bellows 323, to ensure the reliability of the elastic bellows 323.

[0129] Referring to FIGS. 9-12, the contact mechanism 001 and the drive mechanism 002 are arranged in the housing 009, and the drive mechanism 002 drives the contact assembly 120 to open and close. The housing 009 is divided into two chambers by the partition plate 901, and the drive mechanism 002 and the contact mechanism 001 are arranged in different chambers and separated by the partition plate 901. The drive mechanism 002 includes the drive coil 230, the movable iron core 220 arranged in the hollow part of the drive coil 230, the push rod 332 fixedly installed on one end of the movable iron core 220 and extending through the partition plate 901 to the chamber where the contact mechanism 001 is arranged, the movable contact assembly 120 support arranged on the push rod 332, and the movable contact assembly 120 arranged on the movable contact assembly 120 support. In the chamber where the drive mechanism 002 is arranged, there are also a stationary iron core 240 and a magnetic conducting ring, and the specific structure of the drive mechanism 002 is the same as that of the magnetic drive contactor.

[0130] The partition plate 901 in the chamber where the contact mechanism 001 is arranged is provided with a bushing 007, which is a cover-shaped structure. The bushing 007 and the partition plate 901 form a sealed chamber, and the contact mechanism 001 is arranged in the sealed chamber formed by the bushing 007 and the partition plate 901. Inert gas is filled in the sealed chamber for arc extinguishing. The top of the housing 009 is pressed on the top of the bushing 007, and the bushing 007 is positioned by the housing 009. In some embodiments, the bushing 007 is a ceramic cover, which is fixedly connected with the partition plate 901 to form a sealed chamber. A magnetic steel frame 015 is arranged between the sidewall of the bushing 007 and the housing 009, and a permanent magnet 014 is arranged on the magnetic steel frame 015.

[0131] Two static contacts are fixed on the top of the bushing 007 respectively, and the static contacts are fixedly connected with the bushing 007 in a welding manner, and the contact surfaces of the static contacts and the bushing 007 are sealed in a welding manner. One end of the static contact is located in the sealed chamber, and the other end penetrates the top of the shell 009 and can be connected with the circuit outside the contactor. A mounting through hole penetrating the top of the bushing 007 is formed in the top of the bushing 007 between the two static contacts. A mounting boss is arranged at the position corresponding to the mounting through hole of the bushing 007 of the shell 009, the mounting boss protrudes from the outer surface of the top of the shell 009, a hollow part penetrating the thickness of the mounting boss is formed in the mounting boss, so that the inside and outside of the shell 009 are communicated. A clamping hole is formed in the side wall of the mounting boss located on the outside of the shell 009. The mounting boss is integrally formed with the shell 009.

[0132] The excitation mechanism 003 comprises an excitation gas source 310 and a mounting seat 350, the mounting seat 350 is in a tubular structure, and the excitation gas source 310 is fixedly installed in the mounting seat 350 in a nested manner. The excitation gas source 310 is a gas generating device capable of generating high-pressure gas. A clamping buckle 352 is arranged at the position corresponding to the clamping hole of the outer periphery of the mounting seat 350, the excitation mechanism 003 is installed in the hollow part of the mounting boss, the clamping buckle 352 of the mounting seat 350 is clamped into the clamping hole of the mounting boss to form a clamping clamping buckle 352 structure, so that the excitation mechanism 003 is installed in the mounting boss, and the end of the mounting seat 350 away from the excitation gas source 310 abuts against the top of the bushing 007 through the top of the shell 009, and the bushing 007 corresponding to the mounting through hole of the mounting boss is located in the mounting seat 350. The high-pressure gas release end of the excitation gas source 310 faces the direction of the bushing 007. In order to improve the sealing performance between the mounting seat 350 and the bushing 007, a sealing ring is arranged between the contact surfaces of the mounting seat 350 and the bushing 007, a limiting groove can be formed on the contact surface of the mounting seat 350 and the bushing 007, and the sealing ring is arranged in the limiting groove, so that the excitation mechanism 003 and the bushing 007 are sealed, and the high-pressure gas released by the excitation gas source 310 is prevented from leaking through the gap between the excitation mechanism 003 and the bushing 007, thereby reducing the pressure of the high-pressure gas.

[0133] The inner wall of the mounting seat 350 between the high-pressure gas release end of the excitation gas source 310 and the bushing 007 is a straight-line displacement guide structure.

[0134] The sealing element is a hollow bellows structure, and is made of metal material such as copper, aluminum or alloy metal, so that the sealing element has certain flexibility and sufficient supporting strength. The sealing element is located in the mounting seat 350, one end of the sealing element is fixedly connected to the outer surface of the top of the bushing 007 in a brazing welding manner, and the other end faces the direction of the excitation gas source 310.

[0135] The excitation action assembly 330 comprises a carrier 331, a push rod 332 and a piston. The piston is located in the mounting seat 350 and between the sealing element and the excitation gas source 310, and the piston is fixedly connected to the end of the sealing element towards the excitation gas source 310 in a sealed manner, such as a welded, glued or other connection structure. Since the sealing element has a certain support strength, the sealing element supports and limits the initial position of the excitation action assembly 330. The piston and the sealing element seal the mounting through hole at the top of the bushing 007, the partition plate 901 and the sealing chamber formed by the bushing 007 remain sealed, so that the inert gas filled in the sealing chamber cannot leak. The piston is in sealing contact with the inner wall of the mounting seat 350, and the sealing contact is achieved by arranging a sealing ring on the outer periphery of the piston in contact with the inner wall of the mounting seat 350, or by tightly fitting or interference fitting the piston with the inner wall of the mounting seat 350. The carrier 331 is made of insulating material, and the carrier 331 is located in the sealing chamber formed by the bushing 007 and the partition plate 901, and corresponds to the movable contact assembly 120. In the normal opening and closing state, a certain distance is reserved between the carrier 331 and the movable contact assembly 120, that is, the carrier 331 does not affect the normal opening and closing action of the movable contact assembly 120. The first moving guide rod 210 passes through the sealing element, one end of the first moving guide rod 210 passes through the mounting through hole at the top of the bushing 007 and is fixedly connected to the carrier 331 in the sealing chamber, and the other end is fixedly connected to the piston through the sealing element. The first moving guide rod 210 and the carrier 331 can be independent structures connected by threads or other connection methods, or can be an integrated structure such as an integrated injection molding. When the excitation gas source 310 acts according to the received trigger signal and releases high-pressure gas, the high-pressure gas acts on the piston to drive the piston to displace linearly along the inner wall of the mounting seat 350, and the first moving guide rod 210 and the carrier 331 are integrally displaced, and the movable contact assembly 120 is contacted, and the sealing element is compressed at the same time.

[0136] Epoxy resin is filled in the gap between the mounting seat 350 and the hollow part of the mounting boss, the gap between the stationary contact assembly 110 and the top contact surface of the housing 009, and the gap between the bushing 007 and the housing 009 to form a first sealing element 903.

[0137] The epoxy resin at the gap between the mounting seat 350 and the inner wall of the hollow part of the mounting boss enters the top outer surface of the bushing 007, which not only seals the gap between the mounting seat 350 and the hollow part of the mounting boss, but also seals the gap between the end surface of the mounting seat 350 and the bushing 007, ensuring that the high-pressure gas released by the excitation gas source 310 is in the sealed space between the mounting seat 350, the sealing element, the piston and the excitation gas source 310, and cannot leak.

[0138] The gap between the static contact assembly 110 and the top of the shell 009 is filled with epoxy resin to seal the gap between the static contact assembly 110 and the shell 009 to prevent gas leakage.

[0139] The gap between the bushing 007 and the shell 009 is filled with epoxy resin to ensure the sealing of the bushing 007 and the partition plate 901, improve the sealing performance of the bushing 007 and the partition plate 901, avoid the leakage of the filled inert gas, and improve the sealing strength of the shell 009 and the sealed chamber where the contact mechanism 001 is located. At the same time, the mechanical strength of the bushing 007 and the shell 009 is improved, and the mechanical strength of the welding position existing on the outer surface of the bushing 007 and the shell 009 is also improved.

[0140] Under normal conditions, the drive mechanism 002 drives the contact assembly 120 system to normally open and close, and the carrier 331 and the excitation gas source 310 do not act.

[0141] When there is an overload current and forced opening is required, the excitation gas source 310 acts according to the received trigger signal to release high-pressure gas acting on the piston to drive the piston to move linearly along with the first moving guide rod 210 and the carrier 331 on the inner wall of the mounting seat 350. The carrier 331 abuts against the moving contact assembly 120 to make the moving contact assembly 120, the moving contact assembly 120 support and the push rod 332, and the moving iron core 220 move together in the direction away from the static contact assembly 110. When the displacement reaches the normal opening position, the moving iron core 220, the push rod 332, and the moving contact assembly 120 support stop moving, and the carrier 331 continues to abut against the moving contact assembly 120 to further compress the contact spring, forming a large opening distance between the moving contact assembly 120 and the static contact assembly 110. At the same time, since the first sealing element 903 seals the gap between the excitation mechanism 003 and the shell 009, and seals the contact surface between the sealing element and the bushing 007, the high-pressure state between the excitation gas source 310 and the piston is maintained. Therefore, after the large opening distance is opened, the high-pressure gas always abuts against the piston to make the carrier 331 always abut against the moving contact assembly 120, and the carrier 331 does not rebound, always in the large opening distance opening state, and improves the reliability of the contactor.

[0142] Referring to FIGS. 13 to 18, the shell 009 is mainly divided into three mutually insulated chambers, a top chamber, a bottom chamber, and a side chamber. The top chamber is located above the bottom chamber, and the side chamber is located on the side of the top chamber and the bottom chamber. The top chamber is a sealed chamber, and the top chamber is filled with arc-extinguishing gas, such as inert gas, for example, nitrogen and hydrogen.

[0143] The integrated contactor comprises a contact mechanism 001, a drive mechanism 002 and an excitation mechanism 003. The excitation mechanism 003 comprises an excitation arc extinguishing assembly and a forced opening assembly. The contact mechanism 001 and the forced opening assembly are arranged in a top chamber, the drive mechanism 002 is arranged in a bottom chamber, and the excitation arc extinguishing assembly is arranged in a side chamber.

[0144] The contact mechanism 001 comprises a static contact assembly 110, a moving contact assembly 120, a first elastic assembly 130, and the static contact assembly 110 is two. The drive mechanism 002 mainly comprises a drive coil 230, a moving iron core 220, a static iron core 240, a moving guide rod 210 and a magnetic conductive ring. The excitation arc extinguishing assembly mainly comprises an excitation gas source 310, a first piston 342, a first conductive part 343, an auxiliary contact mechanism 001, a bushing 007 and a fuse 005. The components for driving the moving contact assembly 120 to force open include an air channel 360, a second piston 370 and an elastic part, and the second piston 370 and the elastic part are made of insulating material.

[0145] The top chamber and the bottom chamber are insulated and separated by a partition plate 901. In the top chamber, the bushing 007 is arranged on the partition plate 901 and is pressed by the outer shell 009. A sealed cavity is formed between the bushing 007 and the partition plate 901, and the sealed cavity is filled with arc extinguishing gas, such as inert gas, for example, nitrogen. Two mounting holes for mounting the static contact assembly 110 are arranged at the top of the bushing 007. A limiting step is formed on the static contact assembly 110. When the static contact assembly 110 is mounted in the mounting hole of the bushing 007, the limiting step of the static contact assembly 110 is clamped outside the mounting hole of the bushing 007, thereby limiting the static contact assembly 110. A sealing ring is arranged between the contact surface of the static contact assembly 110 and the bushing 007 to realize sealed contact surface. One end of the static contact assembly 110 is located in the bushing 007, and the other end passes through the outer shell 009 to facilitate connection with external circuit. The moving contact assembly 120 is located in the bushing 007 and faces two static contact assemblies. When opening, the moving contact assembly 120 maintains an insulating distance from the static contact assembly 110; when closing, the moving contact assembly 120 is displaced to conductively contact the two static contact assemblies 110, so that a main circuit in series is formed between the two static contact assemblies 110 and the moving contact assembly 120.

[0146] The guide cylinder penetrating through the bushing 007 is provided with a limiting step at one end outside the bushing 007. The elastic member is in the form of a bellows structure, with one end closed and the other end open. The open end is folded outward to form a limiting edge. The elastic member is arranged in the guide cylinder and abuts the inner wall of the guide cylinder. The limiting edge of the open end of the elastic member is arranged at the limiting step of the guide cylinder, and the limiting edge of the open end of the elastic member is sealingly connected and fixed with the limiting step of the guide cylinder, so as to avoid gas leakage from the gap between the open end of the elastic member and the guide cylinder. The closed end of the elastic member is located at one end of the guide cylinder close to the movable contact assembly 120 and is arranged opposite to the movable contact assembly 120. The closed end of the elastic member serves as a free end 322 and can be extended and retracted relative to a fixed end 321.

[0147] The air channel 360 is a separately manufactured part and has an overall inverted L shape, being a bent tubular structure with both ends open. The air channel 360 comprises a first part and a second part connected integrally, and the second part is integrally connected to one end of the first part in a perpendicular manner to form an inverted L structure. The second part is kept a certain distance from the end of the first part, so that after the second part of the air channel 360 is inserted into the guide cylinder, the end of the first part close to the second part can be supported on one side of the guide cylinder. A long groove 351 is arranged on the outer surface of the top of the bushing 007 and is in communication with the guide cylinder. The first part of the air channel 360 is arranged in the long groove 351 on the outer surface of the top of the bushing 007 and is limited thereby. The contact surface between the first part of the air channel 360 and the long groove 351 on the outer surface of the top of the bushing 007 is a plane contact, so as to ensure that the air channel 360 is placed stably. The open end of the first part of the air channel 360 can be in communication with the side chamber, and the second part of the air channel 360 extends into the elastic member in the guide cylinder from the outside of the bushing 007, compresses the elastic member and fixes the elastic member in the guide cylinder. A plurality of limiting sealing rings are arranged at intervals on the outer periphery of the second part of the air channel 360 and correspond to the positions of the crests of the bellows. The end face of the limiting sealing ring is in the form of a concave structure and can abut against the crests of the bellows to compress the bellows and seal the contact surface between the air channel 360 and the bellows. The air channel 360 is compressed and fixed on the bushing 007 by the outer shell 009.

[0148] The second piston 370 is arranged in the second part of the air channel 360 in the guide cylinder in an interference manner, and the top of the second piston 370 is kept a certain distance from the first part of the air channel 360 to provide a space for gas flow. The end close to the movable contact assembly 120 of the second piston 370 is an impact end. When the second piston 370 is impacted, it can displace relative to the second part of the air channel 360 and the guide cylinder, push the closed end of the elastic member to displace, and thus drive the movable contact assembly 120 to separate from the static contact assembly 110.

[0149] A coil skeleton is arranged in the shell 009 below the partition plate 901, and a drive coil 230 is sleeved on the coil skeleton. The moving guide rod 210 is fixedly arranged on the moving iron core 220, and the static iron core 240 is located above the moving iron core 220. A displacement space is reserved between the static iron core 240 and the moving iron core 220, and when the switch is closed, the static iron core 240 can adsorb the moving iron core 220 thereon. A magnetic conducting ring is arranged on the outer periphery of the moving iron core 220, the static iron core 240 and the drive coil 230, and the partition plate 901 is located above the magnetic conducting ring. The two ends of the partition plate 901 are supported on the coil skeleton. The upper end of the moving guide rod 210 passes through the static iron core 240, the magnetic conducting ring and the partition plate 901, and is located in the bushing 007. A limiting ring rib is arranged on the outer periphery of the moving guide rod 210 in the bushing 007, and a limiting plate is arranged on the upper end of the moving guide rod 210. The moving contact assembly 120 is arranged on the moving guide rod 210 between the limiting ring rib and the limiting plate. The first elastic assembly 130 is sleeved between the moving contact assembly 120 and the limiting ring rib, and supports the moving contact assembly 120. The first elastic assembly 130 is always in a compressed state, and under the action of an external force, the moving contact assembly 120 can be displaced relative to the moving guide rod 210. When the moving contact assembly 120 is in conductive contact with the static contact assembly 110, the first elastic assembly 130 buffers the impact force when the contact is made. The inner diameter of the through hole in the partition plate 901 through which the moving guide rod 210 passes is greater than the outer diameter of the moving guide rod 210 and less than the outer diameter of the limiting ring rib. In the normal open position, the limiting ring rib on the moving guide rod 210 is located above the through hole in the partition plate 901. The through hole in the partition plate 901 is sealed by the magnetic conducting ring located below the partition plate 901.

[0150] On the same side of the partition plate 901, the bushing 007 and the coil skeleton, a butt joint sleeve 341 and an arc extinguishing cavity 006 are arranged. A sealing plate is arranged between the butt joint sleeve 341 and the arc extinguishing cavity 006. The sealing plate is used to seal the arc extinguishing cavity 006, so that a sealed arc extinguishing chamber is formed in the arc extinguishing cavity 006. The arc extinguishing chamber is filled with arc extinguishing medium such as quartz sand. The space in the shell occupied by the butt joint sleeve 341 and the arc extinguishing cavity 006 is a side chamber. An excitation arc extinguishing assembly is arranged in the butt joint sleeve 341 and the arc extinguishing cavity 006.

[0151] The excitation gas source 310, the first piston 342, the first conductive part 343 and the auxiliary contact mechanism 001 are arranged in the sleeve 341 from top to bottom. The fuse 005 is arranged in the arc extinguishing cavity 006.

[0152] The excitation gas source 310 is arranged at the top of the sleeve 341. The excitation gas source 310 is a gas generating device, which can act according to the received trigger signal and release high-pressure gas as driving force. The signal receiving end of the excitation gas source 310 is located outside the sleeve 341, which can be connected with the trigger signal sending loop outside the shell 009. The driving force release end of the excitation gas source 310 is located in the sleeve 341. The excitation gas source 310 is fixed by the sleeve 341 and the shell 009.

[0153] The first piston 342 is arranged in the sleeve 341 below the drive force release end of the excitation gas source 310, and is arranged in interference fit with the sleeve 341. The longitudinal section of the first piston 342 is H-shaped, and recesses 351 are arranged on the upper and lower end faces thereof. The recess 351 on the end face adjacent to the excitation gas source 310 is nested with the drive force release end of the excitation gas source 310, and a first conductive member 343 is arranged in nested and fixed manner on the end of the first piston 342 close to the sealing plate, and the first conductive member 343 is in columnar structure. An opening is arranged on the sleeve 341 at a position opposite to the air channel 360, and the opening end of the first part of the air channel 360 is arranged in the opening of the sleeve 341. When the first piston 342 is in the initial position, the first piston 342 blocks the opening on the sleeve 341.

[0154] The auxiliary contact mechanism 001 includes a first auxiliary contact and a second auxiliary contact. The fuse 005 is arranged in the arc extinguishing cavity 006, and both ends thereof are located outside the arc extinguishing cavity 006. The fuse 005 is connected in series with the auxiliary contact mechanism 001. In the embodiment, the fuse 005 is connected in series with the auxiliary contact mechanism 001 as follows: one end of the fuse 005 is electrically connected with one end of the second auxiliary contact, and the other end of the fuse 005 is electrically connected with one of the static contact assemblies 110. One end of the first auxiliary contact is electrically connected with the other static contact assembly 110, and the other end of the first auxiliary contact is arranged in opposite insulation with the other end of the second auxiliary contact. When the first piston 342 is displaced, the first conductive member 343 on the first piston 342 enters between the two ends of the first auxiliary contact and the second auxiliary contact which are adjacent and arranged in opposite manner, and is electrically connected with the first auxiliary contact and the second auxiliary contact respectively, so as to connect the fuse 005 in parallel into the main circuit formed after the static contact assembly 110 and the movable contact assembly 120 are closed.

[0155] The capping device 008 is arranged on the arc-extinguishing cavity 006 to seal the arc-extinguishing cavity 006. The capping device 008 is respectively provided with a first protrusion and a second protrusion on the upper and lower surfaces at the position of the conductive part 343 of the first piston 342, and a hollow part is formed in the first protrusion and the second protrusion. An active push rod 810 is arranged in the hollow part of the first protrusion and the second protrusion, and the active push rod 810 is integrally connected to the capping device 008 through a mechanical weak structure. The active push rod 810 is arranged corresponding to the conductive part 343 of the first piston 342, and the upper end of the active push rod 810 protrudes from the first protrusion. The bushing 007, the first protrusion, the second protrusion and the active push rod 810 are all made of insulating materials. In an optional embodiment, the active push rod 810 can be in interference fit on the capping device 008, so that the active push rod 810 can be displaced relative to the capping device 008 under external force, or the active push rod 810 can be connected to the capping device 008 through a breakable buckle, so that the active push rod 810 can be moved relative to the capping device 008 under the pushing action of the engaging action assembly 340.

[0156] The first auxiliary contact and the second auxiliary contact are arranged on the capping device 008, and the opposite ends of the first auxiliary contact and the second auxiliary contact are bent and inserted into the protrusions on the capping device 008 to form a horn-shaped notch.

[0157] A baffle structure is arranged in the accommodating cavity of the arc-extinguishing cavity 006 corresponding to the second protrusion of the capping device 008, the height of the baffle structure is lower than the height of the arc-extinguishing cavity 006, and a displacement channel for the active push rod 810 to enter is formed in the baffle structure. The second protrusion of the capping device 008 is arranged on the upper surface of the baffle structure, a limiting step is arranged at the opening end of the second protrusion of the capping device 008, the upper end surface of the baffle structure abuts against the limiting step of the second protrusion to support the second protrusion, and the active push rod 810 is opposite to the displacement channel of the baffle structure. The sealed accommodating cavity formed by the capping device 008, the arc-extinguishing cavity 006, the second protrusion and the baffle structure is filled with arc-extinguishing medium. The second protrusion and the baffle structure separate the active push rod 810 and the displacement channel from the arc-extinguishing medium. The melt 005 arranged in the arc-extinguishing cavity 006 penetrates through the abutting surface of the second protrusion and the baffle structure, and the melt 005 is located on the displacement path of the active push rod 810.

[0158] The first protrusion of the capping device 008 is located in the sleeve 341 to support the sleeve 341 and limit the position of the sleeve 341.

[0159] The auxiliary contact mechanism 001 is made of conductive material, and the capping device 008, the first piston 342, the second piston 370 and the active push rod 810 are all made of insulating materials.

[0160] In normal working condition, the excitation gas source 310, the first piston 342 and the second piston 370 are not in action, the driving mechanism 002 and the contact mechanism 001 work normally, and the contactor is normally opened and closed.

[0161] When there is an overload or short-circuit current, or an abnormal condition, the excitation gas source 310 receives a trigger signal, ignites and releases high-pressure gas as a driving force, drives the first piston 342 to displace the first conductive part 343 together, the first conductive part 343 pushes the movable push rod 810 at the cover device 008, drives the movable push rod 810 to break away from the cover device 008 at the mechanical breaking point, at the same time, the first conductive part 343 is inserted between the two ends of the first auxiliary contact and the second auxiliary contact adjacent to each other, and is in conductive contact with the two ends of the first auxiliary contact and the second auxiliary contact, so that the fuse 005 is connected in parallel to the main circuit formed by the conductive contact between the static contact assembly 110 and the moving contact assembly 120; in the process of connecting the fuse 005 to the main circuit, the opening at the sleeve 341 communicating with the gas channel 360 communicates with the chamber between the first piston 342 after displacement and the excitation gas source 310, and the high-pressure gas released by the excitation gas source 310 enters the second piston 370 through the gas channel 360 to drive the second piston 370 to displace, and the second piston 370 drives the second elastic assembly 320 to produce irreversible deformation towards the moving guide rod 210, that is, the closed end of the second elastic assembly 320 is displaced towards the moving guide rod 210, so that the deformation amount of the second elastic assembly 320 exceeds the maximum elastic deformation amount to form irreversible deformation, and in the process of irreversible deformation, the second elastic assembly 320 pushes the moving guide rod 210 to drive the moving contact assembly 120 to displace, so that the moving contact assembly 120 is separated from the static contact assembly 110. When the moving contact assembly 120 is separated from the static contact assembly 110, the first piston 342 and the first conductive part 343 continue to displace, push the movable push rod 810 to displace, cut off the fuse 005, and realize zero-current opening of the main circuit.

[0162] Due to the existence of the limiting ring rib on the moving guide rod 210, when the moving guide rod 210 is displaced to drive the moving contact assembly 120 to displace to achieve opening, the position of the moving contact assembly 120 after opening is the normal opening position.

[0163] Arc extinguishing principle:

[0164] In normal working condition, the current flows through the main circuit formed by the static contact assembly 110 and the moving contact assembly 120 in series, and the auxiliary contact mechanism 001 is in an insulating and disconnected state, so the fuse 005 is not connected to the main circuit, and no current flows through the fuse 005, so the fuse 005 does not produce any temperature rise and power loss.

[0165] When there is an overload or short circuit current, or an abnormal situation, the fuse 005 is first connected in parallel to the main circuit. Since the resistance of the fuse 005 is much larger than the resistance of the main circuit, the current flowing through the fuse 005 is very small and can be ignored. When the second piston 370 separates the movable contact assembly 120 from the stationary contact assembly 110, the resistance of the main circuit is very large at this moment, and the current is diverted to flow through the fuse 005. When the movable contact assembly 120 is separated from the stationary contact assembly 110, the gap between the movable contact assembly 120 and the stationary contact assembly 110 is almost free of arc or has a very small arc. The arc generated when the movable contact assembly 120 is separated from the stationary contact assembly 110 is extinguished by the gas arc-extinguishing medium in the top chamber. The current flows through the fuse 005, and since the resistance of the fuse 005 is large, the current is limited, and the current flowing through the fuse 005 is reduced by several times. As the first piston 342 continues to move, the movable push rod 810 breaks the fuse 005. Since the broken part of the fuse 005 is located in the arc-extinguishing medium, and since the current is reduced by several times, the arc generated at the broken part of the fuse 005 is relatively small, and the arc can be quickly extinguished by the arc-extinguishing medium.

[0166] When there is an overload or short circuit current, when the overload or short circuit current is very large, the fuse 005 may be broken immediately after the movable contact assembly 120 is separated from the stationary contact assembly 110. Since the narrow neck of the fuse 005 is located in the arc-extinguishing medium, the broken part of the fuse 005 is located in the arc-extinguishing medium, and the arc generated by the broken part of the fuse 005 is extinguished by the arc-extinguishing medium. Then the first piston 342 drives the movable push rod 810 to break the fuse 005.

[0167] When there is an abnormal situation, the fuse 005 can only be broken by the first piston 342 driving the movable push rod 810.

[0168] In the above embodiments, whether the contactor is normally opened or closed or forced to open by deforming the elastic member to displace the movable contact assembly 120, the position of the movable contact assembly 120 is at the normal opening position. However, in some embodiments, when the contactor is opened, the driving force on the movable guide rod 210 is large, and when the limit ring rib on the movable guide rod 210 is displaced to the partition plate 901, the part of the limit ring rib in contact with the partition plate 901 will be broken under the impact force, releasing the limit, and the position of the limit ring rib on the movable guide rod 210 enters the through hole of the partition plate 901, forming an insulation distance between the movable contact assembly 120 and the stationary contact assembly 110 that is larger than the normal opening distance, and forming a large gap opening.

[0169] Further, a limit block is provided on the outer periphery of the movable guide rod 210, and the limit block is located below the limit ring rib. When the movable contact assembly 120 is at the normal opening position, the limit block of the movable guide rod 210 is pressed against the partition plate 901.

[0170] When overload, short circuit or abnormal situation, the second piston 370 drive elastic displacement, thus driving the moving contact assembly 120 and static contact assembly 110 conductive separation, first drive moving contact assembly 120 displacement to normal opening position, under the continued displacement of the second piston 370 and elastic, the limit block on the moving guide rod 210 is broken, drive moving contact assembly 120 to the opening position, the elastic element is then irreversible deformation. By adding limit block on the moving guide rod 210, the limit ring rib can be prevented from being broken, the first elastic assembly 130 is prevented from being removed from the limit ring rib, the moving contact assembly 120 is prevented from losing support, and the installation stability of the moving contact assembly 120 is improved.

[0171] In an embodiment, the trigger signal received by the excitation gas source 310 is an external trigger signal, which is sent to the excitation gas source 310 through the connection of the external trigger circuit and the signal end of the excitation gas source 310. The drive coil 230 is turned on and off by the coil power circuit. Referring to FIGS. 19 and 20, in an alternative embodiment, an internal integrated internal trigger circuit and alarm circuit are added, and the internal trigger circuit is integrated in the contactor. The internal trigger circuit is connected with the drive coil 230 power circuit in parallel, and then connected with the signal end of the excitation gas source 310 to provide the trigger signal sent from the inside of the contactor, which is a backup for the trigger signal sent by the external trigger circuit, to ensure that the excitation gas source 310 can receive the trigger signal.

[0172] Referring to FIGS. 19 and 20, the micro switch 011 is arranged on the outer side of the shell 009, and includes two groups of normally closed and normally open contacts. One group of normally open and normally closed contacts (A1, A2) is connected into the drive coil 230 power circuit and the internal trigger circuit to control the switching between the drive coil 230 power circuit and the internal trigger circuit. The normally open contact A is connected in series in the internal trigger circuit, and the normally closed contact A is connected in series in the drive coil 230 power circuit. The other group of normally closed and normally open contacts (B1, B2) is connected in series in the alarm circuit.

[0173] The electromagnetic trigger mechanism 010 includes a static magnetic conductor and a moving magnetic conductor. The static magnetic conductor is arranged in a ring structure around the terminal of one of the static contact assemblies 110 located outside the cover device 008, and the moving magnetic conductor is arranged on one side of the opening end of the static magnetic conductor. The moving magnetic conductor is arranged in the magnetic field loop generated by the static magnetic conductor under the condition that the static contact assembly 110 is powered. The moving magnetic conductor is an armature, and one end of the moving magnetic conductor is rotatably arranged on the outer side of the sleeve 341 and supported on the outer side of the sleeve 341 by the switch reset spring 012. The armature is mechanically linked with the lever of the micro switch 011. In the initial position, an air gap is arranged between the static magnetic conductor and the moving magnetic conductor for displacement of the moving magnetic conductor.

[0174] When the current of the main circuit formed by the moving contact assembly 120 and the static contact assembly 110 after closing exceeds the threshold value, the adsorption force generated by the static magnetic conductor adsorbs the moving magnetic conductor, drives the moving magnetic conductor to displace towards the static magnetic conductor, in the process of displacement of the moving magnetic conductor, the microswitch 011 is linked, the normally open contact A connected in series in the internal trigger circuit is closed, the internal trigger circuit is turned on, the internal trigger signal is sent to the excitation gas source 310; the normally closed contact A connected in series in the coil power supply circuit becomes normally open, the coil power supply circuit is disconnected, the driving coil 230 is powered off; at the same time, the state of the normally closed and normally open contacts (B1, B2) in the alarm circuit is also transformed, the normally open contact is closed, the normally closed contact B is opened, the alarm circuit works, and the alarm signal is sent to the outside.

[0175] The structure of the embodiment can improve production efficiency and assembly efficiency, and reduce the volume of the product.

[0176] In the above embodiments, two or more melt bodies 005 can be provided, and two or more sets of auxiliary contact mechanisms 001 can be provided correspondingly. The auxiliary contact mechanism 001 can also be provided in one set. When one set is provided, all melt bodies 005 are connected in series with the auxiliary contact mechanism 001 in a parallel manner. The parallel melt bodies 005 can share one conductive connection piece, and then be conductively connected with the static contact assembly 110 through the conductive connection piece.

[0177] In addition to the above conductive contact modes, the first auxiliary contact and the second auxiliary contact can also be conductively contacted in a flat plate mode, an interference insertion conductive mode, or a stamping deformation insertion conductive mode.

[0178] Regardless of the conductive contact mode, the adjacent ends of the first auxiliary contact and the second auxiliary contact are misaligned and insulated. The misaligned and insulated structure is that one end of the second auxiliary contact is located on the displacement path of one end of the first auxiliary contact, and an insulating distance is reserved between the one end of the second auxiliary contact and the one end of the first auxiliary contact. When the one end of the first auxiliary contact is driven to displace, the one end of the first auxiliary contact can be conductively contacted with the one end of the second auxiliary contact.

[0179] When the first auxiliary contact and the second auxiliary contact are conductively contacted in a flat plate mode, the one end of the second auxiliary contact and the one end of the first auxiliary contact are both flat structures, and the surface of the one end of the first auxiliary contact is conductively contacted with the surface of the one end of the second auxiliary contact after conductive contact.

[0180] In order to buffer the impact force when the conductive contact, the insulating guide column is arranged, the first auxiliary contact and the second auxiliary contact are respectively arranged on the guide column, and the spring is arranged on the guide column to support the first auxiliary contact and the second auxiliary contact. When the first auxiliary contact is impacted by the piston and is in conductive contact with the second auxiliary contact, the spring is compressed under the driving of the impact force, and the impact force is buffered.

[0181] When the conductive contact is achieved by interference insertion, one end of the first auxiliary contact is in a columnar structure, and one end of the second auxiliary contact opposite to the columnar structure of the first auxiliary contact is in a structure such as a groove structure or a hollow structure, which can allow the columnar structure to be inserted. When the one end of the columnar structure of the first auxiliary contact is driven to displace by the piston, the one end of the columnar structure of the first auxiliary contact can be inserted into the groove of the second auxiliary contact in a conductive manner, or can be in conductive contact with the second auxiliary contact in a conductive manner after breaking through the hollow structure. In order to improve the contact performance, a wolf tooth structure is arranged on the periphery of the columnar structure of the first auxiliary contact.

[0182] When one end of the first auxiliary contact is in a columnar structure, the one end of the columnar structure of the first auxiliary contact can be arranged on the impact end surface of the piston, and the first auxiliary contact is connected with the static contact through the soft connection wire.

[0183] When the conductive contact is achieved by stamping deformation insertion, one end of the first auxiliary contact is in a flat plate structure, and one end of the second auxiliary contact corresponding to the flat plate structure is provided with a groove structure, such as a U-shaped groove. When the one end of the first auxiliary contact in the flat plate structure is impacted by the piston, the one end of the flat plate structure of the first auxiliary contact is deformed by stamping under the impact force of the piston and is pressed in the groove structure of the second auxiliary contact to achieve conductive contact.

[0184] In the above scheme, the irreversible deformation of the elastic member can be achieved by setting the distance between the closed end of the elastic bellows 323 and the end surface of the moving guide rod 210, so that when the second piston 370 drives the elastic bellows 323 to stretch, the elastic bellows 323 is deformed, and the distance between the closed end of the elastic bellows 323 and the end surface of the moving guide rod 210 is greater than the maximum elastic deformation of the elastic bellows 323. That is, the distance between the lower end surface (end) of the closed end of the elastic member in the initial state and the position of the end of the moving guide rod 210 towards the elastic member in the normal opening position is greater than the maximum elastic deformation of the elastic bellows 323 to achieve irreversible deformation. After the irreversible deformation of the elastic bellows 323, the elastic bellows 323 can directly push against the moving guide rod 210, so that the contactor can be kept in the opening position, preventing the rebound of the moving contact assembly 120, and the disconnection is more reliable.

[0185] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, and are not intended to limit the present disclosure; although the present disclosure has been described in detail with reference to the above embodiments, those skilled in the art should understand that the technical solutions recorded in the above embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. An energizing integrated contactor, characterized by, The integrated contactor comprises a contact mechanism (001), a driving mechanism (002) and an excitation mechanism (003); the contact mechanism comprises a stationary contact assembly (110), a movable contact assembly (120) and a first elastic assembly (130); the driving mechanism (002) drives the movable contact assembly (120) to move relative to the stationary contact assembly (110) to realize opening and closing; the first elastic assembly (130) acts on the movable contact assembly (120) and has an elastic tendency to make the movable contact assembly (120) engage the stationary contact assembly (110); the excitation mechanism (003) is arranged opposite to the movable contact assembly (120) and drives the movable contact assembly (120) to move away from the stationary contact assembly (110) under the condition that the excitation mechanism (003) is triggered. The excitation mechanism (003) comprises an excitation gas source (310), a second elastic assembly (320) and an excitation action assembly (330); the second elastic assembly (320) has a fixed end (321) and a free end (322), one of the fixed end (321) and the free end (322) is arranged opposite to the excitation gas source (310), and the other is connected to the excitation action assembly (330); and the second elastic assembly (320) has a tendency to make the excitation action assembly (330) move away from the movable contact assembly (120); the excitation gas source (310) and the excitation action assembly (330) form an excitation cavity, and under the condition that the excitation gas source (310) is triggered and started, the excitation gas source (310) releases gas to the excitation cavity to drive the excitation action assembly (330) to push the movable contact assembly (120) away from the stationary contact assembly (110).

2. The energizing integrated contactor of claim 1, wherein, The integrated contactor has a gap flow channel communicating with the excitation cavity; under the condition that the excitation gas source (310) is triggered and started, the second elastic assembly (320) produces recoverable elastic deformation, and after the excitation gas source (310) stops, the gas in the excitation cavity is released through the gap flow channel, the second elastic assembly (320) rebounds and drives the excitation action assembly (330) to move away from the movable contact assembly (120).

3. The energizing integrated contactor of claim 2, wherein, The recoverable elastic deformation of the second elastic assembly (320) is tensile elastic deformation, the fixed end (321) is arranged towards the excitation gas source (310), and the free end (322) is arranged towards the movable contact assembly (120); the free end (322) is closed by itself or through the excitation action assembly (330) to form the excitation cavity between the excitation gas source (310) and the free end (322); 4. The energizing integrated contactor of claim 3, wherein, ​ In the state that the excitation gas source (310) is triggered to start, the excitation gas source (310) releases gas to pass through the fixed end (321) and drive the free end (322) to push the moving contact assembly (120) away from the static contact assembly (110) through the excitation action assembly (330).

5. The energizing integrated contactor of claim 3, wherein, The second elastic assembly (320) is reversibly elastically deformed in a compression mode, the fixed end (321) is arranged towards the moving contact assembly (120) and is fixed relative to the shell (009), and the free end (322) is arranged towards the excitation gas source (310); one end of the excitation action assembly (330) is connected to the free end (322) to form the excitation cavity between the free end (322) and the excitation gas source (310), and the other end of the excitation action assembly (330) passes through the second elastic assembly (320) and is arranged towards the moving contact assembly (120); in the state that the excitation gas source (310) is triggered to start, the excitation gas source (310) releases gas to drive the free end (322) to move towards the fixed end (321) and push the moving contact assembly (120) away from the static contact assembly (110) through the excitation action assembly (330).

6. The energizing integrated contactor of claim 3, wherein, The excitation gas source (310) is inserted into the mounting seat (350) connected to the shell (009); the excitation gas source (310) and the mounting seat (350) have a gap flow channel, and / or the mounting seat (350) and the shell (009) have a gap flow channel; the gap flow channel is in fluid communication with the excitation cavity.

7. The energizing integrated contactor of claim 2, wherein, In the state that the excitation gas source (310) is triggered to start, the second elastic assembly (320) is irreversibly deformed to push the moving contact assembly (120) through the excitation action assembly (330) and maintain the state that the moving contact assembly (120) is separated from the static contact assembly (110).

8. The energizing integrated contactor of claim 7, wherein, The excitation cavity includes a telescopic cavity formed by the second elastic assembly (320), and the volume of the telescopic cavity changes with the deformation of the second elastic assembly (320); the excitation cavity is in communication with the excitation gas source (310) through the gas channel (360), the second piston (370) is interference-fitted in the gas channel (360) to block the excitation cavity and the excitation gas source (310); in the state that the excitation gas source (310) is triggered to start, the excitation gas source (310) releases gas into the gas channel (360) to drive the second piston (370), the second piston (370) blocks the gas channel (360) to maintain the constant gas pressure in the telescopic cavity and prevent the second elastic assembly (320) from rebounding.

9. The energizing integrated contactor according to claim 2 or 7, wherein The excitation integrated contactor has a gap flow channel communicating with the excitation cavity, and the gap flow channel is sealed by glue filling; after the excitation gas source (310) is triggered to start, the gas filled in the excitation cavity is sealed, so that the excitation action assembly (330) pushes the moving contact assembly (120) to keep the moving contact assembly (120) and the static contact assembly (110) in a state of being tripped.

10. The energizing integrated contactor of claim 9, wherein, The excitation integrated contactor has a gap flow channel communicating with the excitation cavity, and the gap flow channel is sealed by glue filling; after the excitation gas source (310) is triggered to start, the gas filled in the excitation cavity is sealed, so that the excitation action assembly (330) pushes the moving contact assembly (120) to keep the moving contact assembly (120) and the static contact assembly (110) in a state of being tripped.

11. The energizing integrated contactor according to claims 2 to 10, characterized in that, The second elastic assembly (320) includes an elastic bellows (323), and an inner cavity of the elastic bellows (323) is configured as the excitation cavity.

12. The energizing integrated contactor of claim 2, wherein, The excitation integrated contactor further includes a normally open contact group (004) and a fuse (005); the normally open contact group (004) is connected in series with the fuse (005), and the normally open contact group (004) and the fuse (005) are connected in parallel with the static contact assembly (110) and the moving contact assembly (120) in a circuit; the excitation mechanism (003) further includes an engagement action assembly (340) driven by the excitation gas source (310), and the engagement action assembly (340) corresponds to the normally open contact group (004); in a state where the excitation gas source (310) is triggered to start, the engagement action assembly (340) turns on the normally open contact group (004) and connects the fuse (005) in parallel in the circuit of the static contact assembly (110) and the moving contact assembly (120).

13. The energizing integrated contactor of claim 12, wherein, The excitation integrated contactor further includes an arc extinguishing cavity (006) and a cover device (008) covering the arc extinguishing cavity (006); the fuse (005) has a fuse breaking position passing through the arc extinguishing cavity (006); the cover device (008) has a movable push rod (810) corresponding to the fuse breaking position and arranged opposite to the engagement action assembly (340).

14. The energizing integrated contactor of claim 12, wherein, The engagement action assembly (340) includes a sleeve (341), a first piston (342) and a conductive member (343); the conductive member (343) is connected to the first piston (342), and the conductive member (343) is arranged towards the normally open contact group (004); the first piston (342) is fitted in the sleeve (341), and an end of the first piston (342) away from the normally open contact group (004) is in fluid communication with the excitation gas source (310).

15. The energizing integrated contactor of claim 2, wherein, The excitation action assembly (330) comprises a push rod (332) and an end cap (333), one end of the push rod (332) is opposite to the movable contact assembly (120), the other end of the push rod (332) is matched to the second elastic assembly (320), and the end cap (333) tends to force the second elastic assembly (320) to deform under the condition that the excitation gas source (310) is triggered.

16. The energizing integrated contactor of claim 15, wherein, The end cap (333) has a fragile limiting part (334) matched to the shell (009); when the excitation gas source (310) is triggered and the air pressure of the area opposite to the movable contact assembly (120) of the end cap (333) is less than a preset value, the fragile limiting part (334) remains intact and makes the push rod (332) and the end cap (333) fixed relative to the shell (009); when the excitation gas source (310) is triggered and the air pressure of the area opposite to the movable contact assembly (120) of the end cap (333) is greater than or equal to the preset value, the fragile limiting part (334) is broken, the push rod (332) and the end cap (333) move relative to the shell (009) and drive the movable contact assembly (120) to separate from the static contact assembly (110).

17. The energizing integrated contactor of claim 1, wherein, The contact mechanism (001) and the drive mechanism (002) are respectively installed in the shell (009); the shell (009) is internally provided with a partition plate (901) and is divided into a first chamber and a second chamber by the partition plate (901); the static contact assembly (110) is installed in the first chamber, and the first chamber is filled with a gas arc-extinguishing medium; the drive mechanism (002) is installed in the second chamber, and the drive mechanism (002) is in transmission connection with the movable contact assembly (120).

18. The energizing integrated contactor of claim 17, wherein, The drive mechanism (002) comprises a movable guide rod (210) sliding through the partition plate (901); the movable contact assembly (120) is slidingly matched to the movable guide rod (210) and is driven by the first elastic assembly (130) to abut against the end of the movable guide rod (210) relative to the excitation mechanism (003).

19. The energizing integrated contactor of claim 18, wherein, The arc separation plate (902) is arranged on the separation plate (901), and when the driving mechanism (003) drives the movable contact assembly (120) to separate from the static contact assembly (110), the movable contact assembly (120) is matched with the limiting structure on the arc separation plate (902); and / or, the limiting block is arranged on the outer periphery of the movable guide rod (210), when the driving mechanism (002) drives the movable contact assembly (120) to separate from the static contact assembly (110), the limiting block abuts against the separation plate (901), when the driving mechanism (003) drives the movable contact assembly (120) to separate from the static contact assembly (110), the limiting block is disconnected from the movable guide rod (210), so as to increase the separation distance between the movable contact assembly (120) and the static contact assembly (110).

20. The energizing integrated contactor of claim 1, wherein, The excitation integrated contactor further comprises an electromagnetic trigger mechanism (010), a micro switch (011) and a switch reset spring (012); the electromagnetic trigger mechanism (010) and the switch reset spring (012) are respectively in transmission connection with the micro switch (011); the micro switch (011) comprises a normally closed switch part (111) and a normally open switch part (112), the normally closed switch part (111) is in series connection with a power supply circuit of the driving mechanism (002), and the normally open switch part (112) is in series connection with a power supply circuit of the driving mechanism (003); The electromagnetic trigger mechanism (010) is mounted on the static contact assembly (110), and the electromagnetic trigger mechanism (010) is configured to generate a driving force capable of overcoming the switch reset spring (012) when the static contact assembly (110) conducts current exceeding a preset value, so as to switch the normally closed switch part (111) to an open circuit state and switch the normally open switch part (112) to a closed state.

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