Environment-friendly gas switch cabinet

Abstract

The invention provides an environment-friendly gas switch cabinet. The environment-friendly gas switch cabinet comprises a gas box, a motor operating mechanism, a spring operating mechanism, an insulator, a main bus group, a first conducting bar, an isolation static contact, a supporting conductor, a moving contact, a middle static contact, an insulating screw rod, a grounding static contact, a solid-sealed polar pole and a second conducting bar, the main bus group is arranged at the upper part in the gas tank; the first conducting bar is connected with the supporting conductor; the lower end of the supporting conductor is connected with the solid-sealed polar pole; the support conductor is provided with an isolation static contact, and the moving contact is fixedly connected with the insulation screw. The insulating screw passes through the grounding static contact and is connected with the motor operating mechanism. The middle static contact is connected with the solid-sealed polar pole; one end of the solid-sealed polar pole is connected with the spring operating mechanism, and the other end of the solid-sealed polar pole is connected with the upper part of the second conducting bar; and the lower part of the second conducting bar is connected with one end of the insulator. According to the invention, the assembly precision is improved, and the situation of poor coaxiality caused by deformation of the air box due to inflation when the traditional isolation static contact is installed on the air box is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of high-voltage gas-insulated metal-enclosed switch cabinets, and in particular to an environmentally friendly gas switch cabinet. Background Art

[0002] The solid-sealed pole refers to the vacuum interrupter and the related conductive parts of the circuit breaker are embedded in the easily solidified solid insulating materials such as epoxy resin or thermoplastic materials to form the pole, so that the entire circuit breaker pole becomes an integral component. It is widely used in switchgear equipment of voltage level 35kV and below. Its insulation reliability is related to the safety of switchgear and power system. As shown in the traditional installation method of isolation contacts and grounding contacts and the structure of the solid-sealed pole, the isolation static contact is installed on the gas box. When inflated, it will cause the gas box to deform, resulting in a larger coaxial deviation of the isolation dynamic and static contacts, inaccurate centering during opening and closing, and uneven contact between contacts after closing, resulting in increased contact resistance and severe heat generation. Summary of the invention

[0003] Based on this, it is necessary to provide an environmentally friendly gas switch cabinet to address the above technical problems.

[0004] An environmentally friendly gas switch cabinet, comprising: a gas box, a motor operating mechanism, a spring operating mechanism, a plurality of insulators, a main busbar group, a plurality of first conductive bars, a plurality of isolating static contacts, a plurality of supporting conductors, a plurality of moving contacts, a plurality of intermediate static contacts, a plurality of insulating screws, a plurality of grounding static contacts, a plurality of sealed poles and a plurality of second conductive bars;

[0005] The gas box is an internal hollow structure, the main busbar group is arranged in the upper part of the gas box, one end of the main busbar group extends out of one side of the gas box and is sealed and connected to the one side of the gas box; the other end of the main busbar group extends out of one side of the gas box and is sealed and connected to the other side of the gas box; the main busbar group is fixedly connected to one end of the first conductive bar;

[0006] The other end of the first conductive row is connected to the upper end of the supporting conductor; the lower end of the supporting conductor is connected to the sealed pole; an isolating static contact is provided on the supporting conductor, the moving contact is fixedly connected to one end of the insulating screw, and moves linearly inside the isolating static contact and the intermediate static contact under the control of the insulating screw; the other end of the insulating screw passes through the grounding static contact and is connected to the motor operating mechanism; the lower part of the intermediate static contact is connected to the sealed pole; one end of the sealed pole is connected to the spring operating mechanism, and the other end of the sealed pole is connected to the upper part of the second conductive row; the lower part of the second conductive row is connected to one end of the insulator; the other end of the insulator passes through the lower part of the air box, and the other end of the insulator extends out of the rear end of the air box;

[0007] The insulator, the first conductive row, the isolating static contact, the supporting conductor, the moving contact, the middle static contact, the insulating screw, the grounding static contact, the sealed pole and the second conductive row correspond to each other one by one.

[0008] In one embodiment, the air box includes: an air box shell, a flange plate, a first observation window and a second observation window;

[0009] The flange plate is arranged at the rear end of the air box, the first observation window is arranged at the front end of the air box, and the second observation window is arranged at the upper end of the air box. The flange plate, the first observation window, the second observation window and the air box shell constitute an internal hollow structure.

[0010] In one embodiment, it also includes:

[0011] The motor operating mechanism and the spring operating mechanism are installed on one side of the flange plate, the grounding static contact and the sealed pole are installed on the other side of the flange plate, the motor operating mechanism is connected to the grounding static contact, and the spring operating mechanism is connected to the sealed pole.

[0012] In one embodiment, the main busbar group includes: a plurality of first main busbars and a plurality of second main busbars;

[0013] The first main busbar passes through the second main busbar and is fixedly connected to the second main busbar; the first main busbar and the first conductive bar correspond one to one.

[0014] In one embodiment, the sealed pole includes: a sealed pole bottom, a first moving end support, a second moving end support, an upper semicircular insulating structure, a lower semicircular insulating structure, an insulating pull rod, a sealed pole moving contact, and a sealed pole static contact;

[0015] The upper semicircular insulating structure and the lower semicircular insulating structure form a structure with a hollow interior; the upper semicircular insulating structure is longer than the lower semicircular insulating structure;

[0016] The bottom of the sealed pole is fixed to the outside of the rear ends of the upper semicircular insulating structure and the lower semicircular insulating structure; the first moving end support is arranged on the upper part of the upper semicircular insulating structure close to the bottom of the sealed pole; the second moving end support is arranged on the upper part of the upper semicircular insulating structure away from the bottom of the sealed pole; the sealed pole static contact is fixed to the front end of the internal hollow structure; the insulating pull rod is arranged in the internal hollow structure and moves linearly in the internal hollow structure, one end of the insulating pull rod is connected to the sealed pole moving contact to control the separation and combination of the sealed pole moving contact and one end of the sealed pole static contact, and the other end of the insulating pull rod is connected to the spring operating mechanism.

[0017] In one embodiment, it also includes:

[0018] The upper portion of the second conductive bar is connected to the other end of the sealed pole static contact;

[0019] The lower part of the intermediate stationary contact is supported and connected to the first movable end;

[0020] The lower end of the supporting conductor is supported and connected to the second moving end;

[0021] The spring operating mechanism is connected to the insulating pull rod.

[0022] In one of the embodiments, it further includes: a plurality of fixed iron sheets;

[0023] The fixing iron sheet is arranged outside the air box and is used for fixing the air box.

[0024] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows: the patent of the present invention adds a semicircular insulation structure design on the top of the sealed pole, changes the structure of the insulation part on the top of the sealed pole, and this structure effectively improves the electric field distribution between the static end conductor of the circuit breaker and the top outgoing conductor, increases the creepage distance, improves the insulation reliability, and greatly reduces the possibility of discharge between the two parts of the conductor.

[0025] The patent of the present invention adopts nitrogen or dry air instead of sulfur hexafluoride gas as the insulating gas, and does not use greenhouse effect gas at all, thus realizing the green environmental protection of the switchgear.

[0026] The environmentally friendly gas switch cabinet can operate normally under 0 gauge pressure (i.e. the gas pressure in the closed gas box is equal to the external atmospheric pressure) with reliable insulation performance.

[0027] The circuit breaker, isolating switch and earthing switch of the environmentally friendly gas switch cabinet are assembled in an integrated manner, ensuring that they are installed as a whole in the gas box after the external assembly of the gas box is completed, thereby improving the assembly accuracy and reducing the assembly man-hours; at the same time, since the isolating contacts and the earthing contacts are both installed on the sealed poles, the coaxiality is good, thus avoiding the poor coaxiality caused by the deformation of the gas box caused by inflation when the traditional isolating static contacts are installed on the gas box. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of an environmentally friendly gas switch cabinet in an embodiment;

[0029] Figure 2 This is a schematic diagram of the air box structure in one embodiment;

[0030] Figure 3 This is a front view of an environmentally friendly gas switch cabinet in one embodiment;

[0031] Figure 4 It is a schematic diagram of a sealed connection structure between one end of a main busbar assembly and one side of a gas box in one embodiment;

[0032] Figure 5 A schematic diagram of a sealed connection structure between the other end of the main busbar assembly and the other side of the gas box in one embodiment;

[0033] Figure 6 This is a schematic diagram of the structure of a main busbar group in an embodiment;

[0034] Figure 7 It is a schematic diagram of the connection structure of an insulator, a first conductive bar, an isolating static contact, a supporting conductor, a moving contact, an intermediate static contact, an insulating screw, a grounding static contact, a sealed pole, and a second conductive bar in one embodiment;

[0035] Figure 8 A schematic diagram of a sealed pole structure in an embodiment;

[0036] Fig. 9 A schematic diagram of the appearance of a sealed pole in an embodiment;

[0037] Fig.10 It is a schematic diagram of the connection structure of the supporting conductor, the sealed pole and the second conductive bar in one embodiment.

[0038] In the figure, air box 1, air box shell 100, flange plate 101, first observation window 102, second observation window 103, motor operating mechanism 2, spring operating mechanism 3, insulator 4, main busbar group 5, first main busbar 500, second main busbar 501, first conductive bar 6, isolating static contact 7, supporting conductor 8, moving contact 9, middle static contact 10, insulating screw 11, grounding static contact 12, sealed pole 13, sealed pole bottom 1300, first moving end support 1301, second moving end support 1302, upper semicircular insulating structure 1303, lower semicircular insulating structure 1304, insulating pull rod 1305, sealed pole moving contact 1306, sealed pole static contact 1307, second conductive bar 14, fixed iron sheet 15. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0040] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in one or more embodiments of this specification should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in one or more embodiments of this specification do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0041] In one embodiment, Figure 1 As shown, an environmentally friendly gas switch cabinet is provided, including: a gas box 1, a motor operating mechanism 2, a spring operating mechanism 3, a plurality of insulators 4, a main busbar group 5, a plurality of first conductive bars 6, a plurality of isolating static contacts 7, a plurality of supporting conductors 8, a plurality of moving contacts 9, a plurality of intermediate static contacts 10, a plurality of insulating screws 11, a plurality of grounding static contacts 12, a plurality of sealed poles 13 and a plurality of second conductive bars 14.

[0042] like Figure 1 and Figure 2 As shown, the air box 1 is a hollow structure and includes an air box shell 100 , a flange plate 101 , a first observation window 102 and a second observation window 103 .

[0043] The air box shell 100 is welded from stainless steel plates, the flange plate 101 is arranged at the rear end of the air box 1, the first observation window 102 is arranged at the front end of the air box 1, and the second observation window 103 is arranged at the upper end of the air box 1. The flange plate 101, the first observation window 102, the second observation window 103 and the air box shell 101 constitute an internal hollow structure.

[0044] The motor operating mechanism 2 and the spring operating mechanism 3 are installed on one side of the flange plate 101, and the grounding static contact 12 and the sealed pole 13 are installed on the other side of the flange plate 101. The motor operating mechanism 2 and the grounding static contact 12 are connected, and the spring operating mechanism 3 and the sealed pole 13 are connected.

[0045] The sealed pole 13, the spring operating mechanism 3, the grounding static contact 12 and the motor operating mechanism 2 are installed on a common flange plate 101, and the intermediate static contact 10 and the isolating static contact 7 shared by the isolating switch and the grounding switch are installed on the sealed pole 13 to form an integral assembly, which improves the assembly accuracy, reduces the assembly time, and avoids the poor coaxiality caused by the deformation of the air box 1 caused by inflation when the isolating static contact 7 is installed on the air box 1.

[0046] The main busbar group 5 is arranged at the upper part of the gas box 1. Figure 3 and Figure 4 One end of the main busbar assembly 5 extends out of one side of the gas box 1 and is sealed and connected to one side of the gas box 1; Figure 3 He Ru Figure 5 As shown, the other end of the main busbar assembly 5 extends out of one side of the air box 1 and is sealedly connected to the other side of the air box 1.

[0047] like Figure 6 As shown, the main busbar group 5 includes: a plurality of first main busbars 500 and a plurality of second main busbars 501. The first main busbar 500 passes through the second main busbar 501 and is fixedly connected to the second main busbar 501. The main busbar group 5 is fixedly connected to one end of the first conductive bar 6, and the first main busbar 500 corresponds to the first conductive bar 6 one by one. The other end of the first conductive bar 6 is connected to the upper end of the supporting conductor 8.

[0048] The insulator 4 , the first conductive bar 6 , the isolating static contact 7 , the supporting conductor 8 , the moving contact 9 , the intermediate static contact 10 , the insulating screw 11 , the grounding static contact 12 , the sealed pole 13 and the second conductive bar 14 correspond to each other one by one.

[0049] like Figure 7 As shown, the lower end of the supporting conductor 8 is connected to the sealed pole 13; an isolating static contact 7 is provided on the supporting conductor 8, and the moving contact 9 is fixedly connected to one end of the insulating screw 11, and moves linearly inside the isolating static contact 7 and the intermediate static contact 10 under the control of the insulating screw 11; the other end of the insulating screw 11 passes through the grounding static contact 12 and is connected to the motor operating mechanism 2; the lower part of the intermediate static contact 10 is connected to the sealed pole 13.

[0050] One end of the sealed pole 13 is connected to the spring operating mechanism 3 , and the other end of the sealed pole 13 is connected to the upper part of the second conductive bar 14 .

[0051] like Figure 8 and Fig. 9As shown, the sealed pole 13 includes: a sealed pole bottom 1300, a first moving end support 1301, a second moving end support 1302, an upper semicircular insulating structure 1303, a lower semicircular insulating structure 1304, an insulating pull rod 1305, a sealed pole moving contact 1306, and a sealed pole static contact 1307. The sealed pole 13 simultaneously embeds the vacuum interrupter and the conductive parts related to the circuit breaker into a solid insulating material such as epoxy resin or thermoplastic material that is easy to solidify to form a pole, so that the entire circuit breaker pole becomes an integral component.

[0052] The upper semicircular insulating structure 1303 and the lower semicircular insulating structure 1304 form a hollow structure; the upper semicircular insulating structure 1303 is longer than the lower semicircular insulating structure 1304 .

[0053] The bottom 1300 of the sealed pole is fixed to the outside of the rear ends of the upper semicircular insulating structure 1303 and the lower semicircular insulating structure 1304; the first moving end support 1301 is arranged on the upper part of the upper semicircular insulating structure 1303 close to the bottom 1300 of the sealed pole; the second moving end support 1302 is arranged on the upper part of the upper semicircular insulating structure away from the bottom 1300 of the sealed pole; the sealed pole static contact 1307 is fixed to the front end of the internal hollow structure; the insulating pull rod 1305 is arranged in the internal hollow structure and moves linearly in the internal hollow structure. One end of the insulating pull rod 1305 is connected to the sealed pole moving contact 1306 to control the separation and connection of the sealed pole moving contact 1306 and one end of the sealed pole static contact 1307. The other end of the insulating pull rod 1305 is connected to the spring operating mechanism 3.

[0054] like Fig.10 As shown, the sealed pole 13 is added with an upper semicircular insulation structure 1303, so that the creepage distance between the supporting conductor 8 and the second conductive bar 14 is increased, and the possibility of discharge is reduced.

[0055] The upper part of the second conductive bar 14 is connected to the other end of the sealed pole static contact 1307, the lower part of the middle static contact 10 is connected to the first moving end support 1301, the lower end of the supporting conductor 8 is connected to the second moving end support 1302, and the spring operating mechanism 3 is connected to the insulating pull rod 1305.

[0056] The lower part of the second conductive bar 14 is connected to one end of the insulator 4 ; the other end of the insulator 4 passes through the lower part of the air box 1 , and the other end of the insulator 4 extends out of the rear end of the air box 1 .

[0057] The environmentally friendly gas switch cabinet further includes: a plurality of fixing iron sheets 15 , which are arranged outside the gas box 1 and are used to fix the gas box 1 .

[0058] The present invention provides an environmentally friendly gas switch cabinet, which simulates and optimizes the internal space layout of the gas box 1. The current flows from the main busbar group 5 through the first conductive bar 6 to the isolating static contact 7, and then enters the cable through the moving contact 9, the middle static contact 10, the first moving end support 1301, the sealed pole moving contact 1306 of the vacuum arc chamber, the sealed pole static contact 1307, the second conductive bar 14, and the insulator 4 conductor to realize the flow of the entire main circuit. The motor operating mechanism 2 drives the insulating screw 11 to rotate through the transmission device, and the insulating screw 11 drives the moving contact 9 to move linearly inside the middle static contact 10 to realize the isolation grounding switch to achieve three working positions such as isolation separation and closing, grounding separation and closing, and intermediate position. The spring operating mechanism 3 drives the insulating pull rod 1305 to drive the vacuum arc chamber sealed pole moving contact 1306 and the sealed pole static contact 1307 inside the sealed pole 13 to open and close, thereby realizing the circuit breaker to control the main circuit current on and off.

[0059] The present invention adds a semicircular insulation structure design on the top of the sealed pole, changes the structure of the insulation part on the top of the sealed pole, and effectively improves the electric field distribution between the static end conductor and the top outgoing conductor of the circuit breaker, increases the insulation reliability, and greatly reduces the possibility of discharge between the two parts of the conductor.

[0060] The patent of the present invention adopts nitrogen or dry air instead of sulfur hexafluoride gas as the insulating gas, thus achieving green and environmental protection.

[0061] The environmentally friendly gas switch cabinet can achieve normal operation under 0 gauge pressure (i.e. the gas pressure in the closed gas box is equal to the external atmospheric pressure) with reliable insulation.

[0062] The circuit breaker, isolating switch and earthing switch of the environmentally friendly gas switch cabinet are assembled in an integrated manner, ensuring that they are installed in the gas box as a whole after the external assembly of the gas box is completed, thereby improving the assembly accuracy, reducing the assembly time, and avoiding the poor coaxiality caused by the deformation of the gas box due to inflation when the isolating static contact is installed on the gas box.

[0063] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the embodiments of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0064] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0065] In addition, to simplify the description and discussion, and in order not to obscure the embodiments of the present invention, known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided figures. In addition, the system may be shown in the form of a block diagram so as to avoid obscuring the embodiments of the present invention, and this also takes into account the fact that the details of the implementation of these block diagram systems are highly dependent on the platform on which the embodiments of the present invention will be implemented (i.e., these details should be fully within the scope of understanding of those skilled in the art). Where specific details (e.g., circuits) are set forth to describe exemplary embodiments of the present invention, it will be apparent to those skilled in the art that embodiments of the present invention may be implemented without these specific details or with variations in these specific details. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0066] Although the invention has been described in conjunction with specific embodiments of the invention, many replacements, modifications and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.

[0067] The embodiments of the present invention are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present invention should be included in the protection scope of the present invention.

Claims

1. An environmentally friendly gas switch cabinet, characterized in that: include: An air box, a motor operating mechanism, a spring operating mechanism, a plurality of insulators, a main busbar group, a plurality of first conductive bars, a plurality of isolating static contacts, a plurality of supporting conductors, a plurality of moving contacts, a plurality of intermediate static contacts, a plurality of insulating screws, a plurality of grounding static contacts, a plurality of sealed poles and a plurality of second conductive bars; The gas box is an internal hollow structure, the main busbar group is arranged in the upper part of the gas box, one end of the main busbar group extends out of one side of the gas box and is sealed and connected to the one side of the gas box; the other end of the main busbar group extends out of one side of the gas box and is sealed and connected to the other side of the gas box; the main busbar group is fixedly connected to one end of the first conductive bar; The other end of the first conductive row is connected to the upper end of the supporting conductor; the lower end of the supporting conductor is connected to the sealed pole; an isolating static contact is provided on the supporting conductor, the moving contact is fixedly connected to one end of the insulating screw, and moves linearly inside the isolating static contact and the intermediate static contact under the control of the insulating screw; the other end of the insulating screw passes through the grounding static contact and is connected to the motor operating mechanism; the lower part of the intermediate static contact is connected to the sealed pole; one end of the sealed pole is connected to the spring operating mechanism, and the other end of the sealed pole is connected to the upper part of the second conductive row; the lower part of the second conductive row is connected to one end of the insulator; the other end of the insulator passes through the lower part of the air box, and the other end of the insulator extends out of the rear end of the air box; The insulator, the first conductive row, the isolating static contact, the supporting conductor, the moving contact, the middle static contact, the insulating screw, the grounding static contact, the sealed pole and the second conductive row correspond to each other one by one.

2. The environmentally friendly gas switch cabinet according to claim 1, characterized in that: The air box comprises: an air box shell, a flange plate, a first observation window and a second observation window; The air box shell is welded from stainless steel plates, the flange plate is arranged at the rear end of the air box, the first observation window is arranged at the front end of the air box, and the second observation window is arranged at the upper end of the air box. The flange plate, the first observation window, the second observation window and the air box shell constitute an internal hollow structure.

3. The environmentally friendly gas switch cabinet according to claim 2, characterized in that: Also includes: The motor operating mechanism and the spring operating mechanism are installed on one side of the flange plate, the grounding static contact and the sealed pole are installed on the other side of the flange plate, the motor operating mechanism is connected to the grounding static contact, and the spring operating mechanism is connected to the sealed pole.

4. The environmentally friendly gas switch cabinet according to claim 1, characterized in that: The main busbar group includes: a plurality of first main busbars and a plurality of second main busbars; The first main busbar passes through the second main busbar and is fixedly connected to the second main busbar; the first main busbar and the first conductive bar correspond one to one.

5. The environmentally friendly gas switch cabinet according to claim 2, characterized in that: The sealed pole comprises: a sealed pole bottom, a first moving end support, a second moving end support, an upper semicircular insulating structure, a lower semicircular insulating structure, an insulating pull rod, a sealed pole moving contact, and a sealed pole static contact; The upper semicircular insulating structure and the lower semicircular insulating structure form a structure with a hollow interior; the upper semicircular insulating structure is longer than the lower semicircular insulating structure; The bottom of the sealed pole is fixed to the outside of the rear ends of the upper semicircular insulating structure and the lower semicircular insulating structure; the first moving end support is arranged on the upper part of the upper semicircular insulating structure close to the bottom of the sealed pole; the second moving end support is arranged on the upper part of the upper semicircular insulating structure away from the bottom of the sealed pole; the sealed pole static contact is fixed to the front end of the internal hollow structure; the insulating pull rod is arranged in the internal hollow structure and moves linearly in the internal hollow structure, one end of the insulating pull rod is connected to the sealed pole moving contact to control the separation and combination of the sealed pole moving contact and one end of the sealed pole static contact, and the other end of the insulating pull rod is connected to the spring operating mechanism.

6. The environmentally friendly gas switch cabinet according to claim 5, characterized in that: Also includes: The upper portion of the second conductive bar is connected to the other end of the sealed pole static contact; The lower part of the intermediate stationary contact is supported and connected to the first movable end; The lower end of the supporting conductor is supported and connected to the second moving end; The spring operating mechanism is connected to the insulating pull rod.

7. The environmentally friendly gas switch cabinet according to claim 1, characterized in that: Also includes: Several fixed iron sheets; The fixing iron sheet is arranged outside the air box and is used for fixing the air box.

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