Environment-friendly gas load switch
By introducing environmentally friendly gas from a vacuum bubble into the load switch, the problem of electric arcing during the opening of stationary and moving contacts is solved, resulting in a longer contact life and stable operation of the power system, while reducing equipment maintenance costs and accident risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GRENO XIAMEN SWITCH
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-12
Smart Images
Figure CN224355189U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electrical equipment, and in particular to an environmentally friendly gas load switch. Background Technology
[0002] In power systems, load switches, as important switching devices, undertake the critical tasks of controlling and protecting circuits. They can connect, carry, and disconnect current under normal circuit conditions, and reliably connect and disconnect current under specified overload conditions. In some cases, they can also provide some protection during short circuits, thus providing a fundamental guarantee for the stable operation of the power system.
[0003] A load switch mainly consists of conductive parts, insulating parts, transmission parts, and an operating mechanism. Among these, the stationary and moving contacts are the core components of the conductive part; their contact and separation directly determine the circuit's on / off state. When the load switch is closed, the moving and stationary contacts are in close contact, forming a good conductive path, allowing current to flow smoothly. When it is necessary to disconnect the circuit, the operating mechanism drives the transmission part, separating the moving and stationary contacts, thereby breaking the circuit.
[0004] However, in existing technologies, load switches are prone to arcing during the opening and closing process of the stationary and moving contacts. When the moving contact begins to separate from the stationary contact, the distance between the contacts gradually increases, but the current in the circuit does not immediately stop. At this time, the electric field strength between the contacts increases sharply. When the electric field strength reaches a certain level, the dielectric between the contacts will break down, thus forming an electric arc.
[0005] The generation of electric arcs has many adverse effects. First, electric arcs have extremely high temperatures, reaching thousands of degrees Celsius or even higher. This causes the metal material on the contact surface to melt and vaporize rapidly, leading to contact erosion. This not only shortens the contact's lifespan and increases equipment maintenance costs, but may also affect the contact performance due to changes in contact shape, thereby reducing the electrical performance of the load switch. Second, electric arcs generate strong electromagnetic radiation and noise, causing interference and harm to surrounding electronic equipment and personnel health. Furthermore, the presence of electric arcs may prevent circuits from being interrupted in a timely and reliable manner. In the event of short circuits or other faults, it may even trigger more serious power system accidents, such as equipment damage and expanded power outage areas, posing a significant threat to the safe and stable operation of the power system.
[0006] Therefore, how to effectively suppress or eliminate the electric arc generated when the stationary and moving contacts of the load switch are opened has become an important problem that urgently needs to be solved in the field of load switch technology.
[0007] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention
[0008] (a) Technical problems to be solved
[0009] This application provides an environmentally friendly gas load switch that can solve the problem of how existing technologies can suppress or eliminate the electric arc generated when the stationary and moving contacts of the load switch are broken.
[0010] (II) Technical Solution
[0011] To solve the above-mentioned technical problems, this application provides the following technical solution:
[0012] An environmentally friendly gas load switch is provided, the environmentally friendly gas load switch comprising:
[0013] shell;
[0014] A moving contact, which is rotatably disposed inside the housing;
[0015] An operating mechanism is disposed in the housing and connected to the moving contact, for controlling the rotation of the moving contact;
[0016] The first stationary contact is fixedly disposed inside the housing and is located on the rotation path of the moving contact;
[0017] An arc-extinguishing device includes a housing, a rotating arm, a vacuum bulb, and a return spring. The housing is fixedly mounted on the outer shell. The rotating arm is rotatably mounted on the housing and is provided with a conductive element. The conductive element is located in the rotation path of the moving contact. The vacuum bulb is mounted on the housing and contains environmentally friendly gas. The two ends of the vacuum bulb are electrically connected to the conductive element and the first stationary contact, respectively. The return spring is located between the rotating arm and the housing.
[0018] When the moving contact is disconnected from the first stationary contact, the moving contact is in electrical contact with the conductive element; when the moving contact is disconnected from the conductive element, the return spring drives the rotating arm to return to its original position.
[0019] In some embodiments, the housing is provided with a sleeve, and the vacuum bubble is disposed inside the sleeve.
[0020] In some embodiments, each of the opposite sides of the housing is pivotally connected to a rotating arm, a connecting seat is provided between the rotating arms, and the conductive element is disposed on the connecting seat.
[0021] In some embodiments, the rotating arm is provided with wire holes and wire grooves, which are arranged along the length of the rotating arm. The vacuum bubble is connected to the conductive element by wires, which are disposed in the guide holes and wire grooves.
[0022] In some embodiments, the return spring is a tension spring, with hooks at both ends, and the housing and rotating arm are provided with hanging holes, with two hooks respectively disposed in the hanging holes of the housing and the rotating arm.
[0023] In some embodiments, the housing is provided with a guide rail, and the rotating arm is provided with a guide block, the guide block being slidably disposed on the guide rail.
[0024] In some embodiments, the housing is fixedly provided with a copper busbar, and the first stationary contact is fixedly connected to the copper busbar.
[0025] In some embodiments, the environmentally friendly gas load switch further includes a grounding contact, which is fixedly disposed inside the housing and located in the rotation path of the moving contact.
[0026] In some embodiments, the environmentally friendly gas load switch further includes a second stationary contact, which is fixedly disposed inside the housing and located in the rotation path of the moving contact.
[0027] In some embodiments, the environmentally friendly gas load switch is provided with several sets of moving contacts, a first stationary contact and an arc extinguishing device, and protrusions and recesses are alternately provided between two adjacent sets of moving contacts, first stationary contacts and arc extinguishing devices.
[0028] (III) Beneficial Effects
[0029] Compared with the prior art, the beneficial effects of the technical solution provided in this application include at least the following:
[0030] Existing load switches are prone to arcing when the first stationary contact and moving contact break. The environmentally friendly gas load switch of this application incorporates an arc-extinguishing device. During the disengagement process between the moving contact and the first stationary contact, a vacuum bubble is introduced. When the moving contact contacts the conductive element, current flows through the vacuum bubble. Because the vacuum bubble contains environmentally friendly gas, creating a vacuum environment with almost no ionizable gas molecules, the possibility of electric field breakdown and arc formation is greatly reduced, effectively suppressing arc generation. Simultaneously, since arc generation is effectively suppressed, the moving contact and the first stationary contact are not subjected to high-temperature erosion from the arc during the breaking process. This avoids the melting and vaporization of the metal materials on the contact surface, extending the contact lifespan, reducing equipment maintenance costs, and ensuring contact performance, maintaining the load switch's good electrical performance. Furthermore, by solving the arcing problem, various adverse effects caused by arcing are reduced, such as electromagnetic radiation and noise interference, and the inability to reliably and timely break the circuit. This reduces the risk of more serious power system accidents caused by faults such as short circuits, ensures the safe and stable operation of the power system, and reduces the possibility of equipment damage and the expansion of power outages. Attached Figure Description
[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0032] Figure 1 This is a perspective view of the environmentally friendly gas load switch in the embodiments of this application;
[0033] Figure 2 This is an internal view of the environmentally friendly gas load switch in an embodiment of this application;
[0034] Figure 3 This is a schematic diagram of the environmentally friendly gas load switch being closed in an embodiment of this application;
[0035] Figure 4 This is a schematic diagram of the environmentally friendly gas load switch being disconnected in an embodiment of this application;
[0036] Figure 5 This is a schematic diagram of the grounding of the environmentally friendly gas load switch in the embodiments of this application;
[0037] Figure 6 This is a side view of the environmentally friendly gas load switch when it is grounded in an embodiment of this application;
[0038] Figure 7 This is a perspective view of the environmentally friendly gas load switch grounded in an embodiment of this application;
[0039] Figure 8 This is a bottom view of the environmentally friendly gas load switch grounded in the embodiment of this application.
[0040] Figure label:
[0041] Outer shell 1;
[0042] Moving contact 2;
[0043] Operating mechanism 3;
[0044] First stationary contact 4;
[0045] Arc extinguishing device 5;
[0046] Housing 51, sleeve 511, guide rail 512, copper busbar 513, protrusion 514, recess 515;
[0047] Rotating arm 52, conductive component 521, connecting seat 522, wire hole 523, wire groove 524, wire 525, guide block 526;
[0048] Vacuum bubble 53;
[0049] 54 return spring, 541 hook, 542 hanging hole;
[0050] Grounding contact 6.
[0051] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0052] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.
[0053] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.
[0054] When a component is referred to as being "on" or "above" another component, "connected to," or "joined to" another component, the component may be directly on, directly connected to, or directly joined to the other component, or there may be intermediate components. However, when a component is referred to as being "directly on" another component, "directly connected to," or "directly joined to" another component, there are no intermediate components. Therefore, the term "connection" can refer to a physical connection, an electrical connection, etc., and may or may not have intermediate components.
[0055] For descriptive purposes, this disclosure may use spatially relative terms such as “below the electrical equipment,” “under the electrical equipment,” “below the electrical equipment,” “under,” “above the electrical equipment,” “above the electrical equipment,” “higher,” and “side (e.g., in a “side wall”)” to describe the relationship between one component and another component as shown in the accompanying drawings. In addition to the orientations depicted in the drawings, the spatially relative terms are also intended to encompass different orientations of the equipment during use, operation, and / or manufacture. For example, if the equipment in the drawings is flipped, a component described as “below” or “under” other components or features would subsequently be positioned “above” said other components or features. Thus, the exemplary term “below the electrical equipment” can encompass both “above” and “below” orientations. Furthermore, the equipment may be otherwise positioned (e.g., rotated 90 degrees or in other orientations), thus interpreting the spatially relative descriptive terms used herein accordingly.
[0056] The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, unless the context clearly indicates otherwise, the singular forms “a” and “the” are intended to include the plural forms as well. Furthermore, when the terms “comprising” and / or “including” and variations thereof are used in this specification, it indicates the presence of the stated features, integrals, steps, operations, parts, components, and / or groups thereof, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, parts, components, and / or groups thereof. It should also be noted that, as used herein, the terms “substantially,” “about,” and other similar terms are used as approximate terms rather than as terms of degree, thus explaining the inherent biases in measurements, calculated values, and / or provided values that would be recognized by one of ordinary skill in the art.
[0057] Existing load switches are prone to generating electric arcs during the opening and closing process of the stationary and moving contacts. When the moving contact begins to separate from the stationary contact, the distance between the contacts gradually increases, but the current in the circuit does not immediately stop. At this time, the electric field strength between the contacts increases sharply. When the electric field strength reaches a certain level, the dielectric between the contacts will break down, thus forming an electric arc.
[0058] To address the aforementioned technical problems, this embodiment provides an environmentally friendly gas load switch.
[0059] Figure 1 This is a perspective view of the environmentally friendly gas load switch in the embodiments of this application. Figure 2 This is an internal view of the environmentally friendly gas load switch in an embodiment of this application. Figure 3 This is a schematic diagram of the environmentally friendly gas load switch being closed in an embodiment of this application. Figure 4 This is a schematic diagram of the environmentally friendly gas load switch being disconnected in an embodiment of this application. Figure 5 This is a schematic diagram of the grounding of the environmentally friendly gas load switch in the embodiments of this application.
[0060] See Figures 1 to 5 As shown, the environmentally friendly gas load switch of this embodiment includes: a housing 1, a moving contact 2, an operating mechanism 3, a first stationary contact 4, and an arc extinguishing device 5.
[0061] The moving contact 2 is rotatably disposed inside the housing 1, such as by being connected to the housing 1 via a rotating shaft. The moving contact 2 is connected to or disconnected from the first stationary contact 4 by rotation.
[0062] The operating mechanism 3 is disposed in the housing 1 and connected to the moving contact 2, and is used to control the rotation of the moving contact 2. The operating mechanism 3 can use an existing operating mechanism for controlling the rotation of the moving contact 2.
[0063] The first stationary contact 4 is fixedly disposed inside the housing 1 and is located in the rotation path of the moving contact 2 so that it can contact the moving contact 2.
[0064] Figure 6 This is a side view of the environmentally friendly gas load switch when grounded in an embodiment of this application. Figure 7 This is a perspective view of the environmentally friendly gas load switch grounded in an embodiment of this application. Figure 8 This is a bottom view of the environmentally friendly gas load switch grounded in the embodiment of this application.
[0065] See Figures 6 to 8As shown, the arc-extinguishing device 5 includes a housing 51, a rotating arm 52, a vacuum bulb 53, and a return spring 54. The housing 51 is fixedly mounted on the outer shell 1. The rotating arm 52 is rotatably mounted on the housing 51 and is equipped with a conductive element 521, which is positioned along the rotation path of the moving contact 2. The vacuum bulb 53 is mounted on the housing 51 and contains an environmentally friendly gas. Both ends of the vacuum bulb 53 are electrically connected to the conductive element 521 and the first stationary contact 4, respectively. The return spring 54 is positioned between the rotating arm 52 and the housing 51. The environmentally friendly gas can be a gas with existing insulating properties, such as an inert gas or an insulating gas. When the moving contact 2 is disengaged from the first stationary contact 4, the moving contact 2 is electrically in contact with the conductive element 521. When the moving contact 2 is no longer in contact with the conductive element 521, the return spring 54 drives the rotating arm 52 to return to its original position.
[0066] When the environmentally friendly gas load switch of this application is in operation, in the closed working state, the moving contact 2 is in close contact with the first stationary contact 4, forming a good conductive path, and the current flows normally in the circuit through the moving contact 2 and the first stationary contact 4. At this time, the rotating arm 52 is in the initial position under the action of the return spring 54, the conductive element 521 is not in contact with the moving contact 2, and the vacuum bulb 53 is in a standby state without power. When it is necessary to cut off the circuit, the operating mechanism 3 drives the moving contact 2 to start rotating, and the moving contact 2 gradually separates from the first stationary contact 4. During the rotation of the moving contact 2, when the moving contact 2 rotates to the position of contacting the conductive element 521, since the conductive element 521 is set on the rotation path of the moving contact 2, the moving contact 2 and the conductive element 521 achieve electrical contact. At this time, the current path changes from the original moving contact 2—first stationary contact 4 to moving contact 2—conductive element 521—vacuum bulb 53—first stationary contact 4. Because the vacuum bulb 53 contains environmentally friendly gas, it has excellent insulation and arc-extinguishing capabilities. When current passes through the vacuum bulb 53, the vacuum environment inside effectively suppresses the generation of electric arcs. As the moving contact 2 continues to rotate, it completely disengages from the first stationary contact 4, and the circuit is cut off. Throughout the entire breaking process, the vacuum bulb 53 consistently performs the functions of current conduction and arc extinguishing, preventing the electric arc that might occur when the moving contact 2 directly separates from the first stationary contact 4. Closure recovery process: When it is necessary to reclose the circuit, the operating mechanism 3 drives the moving contact 2 to rotate in the opposite direction. The moving contact 2 gradually separates from the conductive element 521, and the rotating arm 52 gradually returns to its initial position under the action of the return spring 54. The moving contact 2 continues to rotate until it makes tight contact with the first stationary contact 4 again, the circuit is restored to a closed state, and the current flows normally through the moving contact 2 and the first stationary contact 4 again.
[0067] like Figure 7 and Figure 8As shown, to improve the protective performance of the vacuum bulb 53, the housing 51 is provided with a sleeve 511, and the vacuum bulb 53 is disposed inside the sleeve 511. The sleeve 511 serves to protect the vacuum bulb 53. For example, an electrical insulating cotton is provided between the outer surface of the vacuum bulb 53 and the sleeve 511. The electrical insulating cotton covers the vacuum bulb 53 and the connection points between the vacuum bulb 53 and the conductive component 521 and the first stationary contact 4. During the operation of the load switch, the covering of the electrical insulating cotton can further enhance the insulation strength of these connections, forming multi-layer insulation protection, effectively preventing electric field breakdown and insulation damage, and improving the insulation level of the load switch. Simultaneously, under high-voltage conditions, corona discharge may occur on the surface and at the connections of the vacuum bulb 53, which not only consumes energy but also generates electromagnetic interference and noise. The electrical insulating cotton can improve the electric field distribution, reduce the electric field strength, thereby suppressing the generation of corona discharge, reducing energy loss and electromagnetic interference, and improving the electrical performance of the equipment.
[0068] like Figure 7 and Figure 8 As shown, the housing 51 is pivotally connected to a rotating arm 52 on each of its opposite sides, and a connecting seat 522 is provided between the rotating arms 52. The conductive element 521 is provided on the connecting seat 522.
[0069] like Figure 6 and Figure 7 As shown, the rotating arm 52 is provided with a wire hole 523 and a wire groove 524, which are arranged along the length of the rotating arm 52. The vacuum bulb 53 and the conductive component 521 are connected by a wire 525, which is located in the wire hole 523 and the wire groove 524. The wire hole 523 is a circular through hole, and the wire groove 524 is a groove opened along the length of the rotating arm 52, and the two are interconnected. The wire 525 connecting the vacuum bulb 53 and the conductive component 521 is inserted from one end of the wire hole 523, routed along the wire groove 524, and finally exited from the other end of the wire hole 523. The wire 525 can be made of copper wire with good insulation and conductivity. The constraint of the wire groove 524 and the wire hole 523 ensures that the wire 525 will not sway during the rotation of the rotating arm 52, avoiding interference or wear between the wire 525 and surrounding components, and ensuring the stability and reliability of the circuit connection.
[0070] like Figure 6 As shown, the return spring 54 can be a tension spring, with hooks 541 at both ends. The housing 51 and the rotating arm 52 are provided with hanging holes 542, and the two hooks 541 are respectively located in the hanging holes 542 of the housing 51 and the rotating arm 52. When the rotating arm 52 rotates, the tension spring will generate tension, driving the rotating arm 52 to return to its initial position, ensuring that the arc extinguishing device 5 can return to its normal working state after each interruption operation.
[0071] like Figure 8 As shown, the housing 51 is provided with a guide rail 512, and the rotating arm 52 is provided with a guide block 526, which is slidably mounted on the guide rail 512. The guide rail 512 can be a straight protrusion or groove structure, and its shape and size are designed according to the movement trajectory of the rotating arm 52. On the rotating arm 52, the guide block 526 is provided at the position corresponding to the guide rail 512. The guide block 526 can be fixedly connected to the rotating arm 52 by means of integral molding, bolt connection, etc. The shape of the guide block 526 matches the guide rail 512. For example, if the guide rail 512 is a protrusion structure, the guide block 526 is a groove structure that matches it; if the guide rail 512 is a groove structure, the guide block 526 is a protrusion structure. By slidably mounting the guide block 526 on the guide rail 512, the rotating arm 52 can move stably along the direction of the guide rail 512 during rotation, avoiding deviation or wobbling of the rotating arm 52, and improving the working accuracy and reliability of the arc extinguishing device 5.
[0072] like Figure 6 and Figure 7 As shown, a copper busbar 513 is fixedly mounted on the housing 51, and the first stationary contact 4 is fixedly connected to the copper busbar 513. For example, the copper busbar 513 is typically made of copper, which has good electrical conductivity. The first stationary contact 4 and the copper busbar 513 are fixedly connected by bolts to ensure a reliable electrical connection between them. The copper busbar 513 not only serves as the mounting base for the first stationary contact 4 but also functions as a current collector and distributor, facilitating connection to external circuits and improving the electrical performance and installation convenience of the load switch.
[0073] like Figure 5 As shown, the environmentally friendly gas load switch also includes a grounding contact 6, which is fixedly installed inside the housing 1 and located in the rotation path of the moving contact 2. The grounding contact 6 improves the safety of the load switch, and can promptly conduct the charge in the circuit to the ground when the equipment malfunctions or needs maintenance, thus avoiding harm to personnel and equipment.
[0074] like Figure 1 and Figure 2 As shown, the environmentally friendly gas load switch is equipped with several sets of moving contacts 2, first stationary contacts 4, and arc-extinguishing devices 5. Protrusions 514 and recesses 515 are alternately arranged between adjacent sets of moving contacts 2, first stationary contacts 4, and arc-extinguishing devices 5. The protrusions 514 can be outwardly projecting structures, while the recesses 515 are inwardly recessed structures. This alternating arrangement of protrusions 514 and recesses 515 increases the structural strength of the load switch, while also providing some heat dissipation and insulation, and increasing the creepage distance.
[0075] In some embodiments, the environmentally friendly gas load switch further includes a second stationary contact (not shown), which is fixedly disposed inside the housing 1 and positioned along the rotation path of the moving contact 2. The structure and material of the second stationary contact can be similar to that of the first stationary contact 4, typically also made of copper and silver-plated. Ensuring the second stationary contact is positioned along the rotation path of the moving contact 2, cooperating with the first stationary contact 4, enables multi-channel control or switching functions of the circuit. The moving contact 2 can contact the first stationary contact 4 or the second stationary contact at different positions, thereby changing the circuit connection state to meet different electrical requirements.
[0076] For example, vacuum bulb 53 uses an existing vacuum switch tube.
[0077] In summary, to address the problem of arcing easily occurring when the first stationary contact 4 and the moving contact 2 of existing load switches are disconnected, the environmentally friendly gas load switch of this application incorporates an arc-extinguishing device 5. During the disengagement process of the moving contact 2 from the first stationary contact 4, a vacuum bubble 53 is introduced. When the moving contact 2 contacts the conductive element 521, current flows through the vacuum bubble 53. Since the vacuum bubble 53 contains environmentally friendly gas, creating a vacuum environment with almost no ionizable gas molecules, the possibility of electric field breakdown and arc formation is greatly reduced, effectively suppressing arc generation. Simultaneously, because arc generation is effectively suppressed, the moving contact 2 and the first stationary contact 4 are not subjected to high-temperature erosion from the arc during the disconnection process. This avoids the melting and vaporization of the metal materials on the contact surface, extends the service life of the contacts, reduces equipment maintenance costs, and also ensures the contact performance of the contacts, maintaining the good electrical performance of the load switch. By solving the arcing problem, various adverse effects caused by arcing are reduced, such as electromagnetic radiation and noise interference, and the inability to reliably and timely disconnect the circuit. This reduces the risk of more serious power system accidents caused by faults such as short circuits, ensures the safe and stable operation of the power system, and reduces the possibility of equipment damage and the expansion of power outages.
[0078] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.
[0079] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0080] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.
Claims
1. An environmentally friendly gas load switch, characterized in that, include: shell; A moving contact, which is rotatably disposed inside the housing; An operating mechanism is disposed in the housing and connected to the moving contact, for controlling the rotation of the moving contact; The first stationary contact is fixedly disposed inside the housing and is located on the rotation path of the moving contact; An arc-extinguishing device includes a housing, a rotating arm, a vacuum bulb, and a return spring. The housing is fixedly mounted on the outer shell. The rotating arm is rotatably mounted on the housing and is provided with a conductive element. The conductive element is located in the rotation path of the moving contact. The vacuum bulb is mounted on the housing and contains environmentally friendly gas. The two ends of the vacuum bulb are electrically connected to the conductive element and the first stationary contact, respectively. The return spring is located between the rotating arm and the housing. When the moving contact is disconnected from the first stationary contact, the moving contact is in electrical contact with the conductive element; when the moving contact is disconnected from the conductive element, the return spring drives the rotating arm to return to its original position.
2. The environmentally friendly gas load switch according to claim 1, characterized in that, The housing is provided with a sleeve, and the vacuum bubble is disposed inside the sleeve.
3. The environmentally friendly gas load switch according to claim 1, characterized in that, The housing is pivotally connected to a rotating arm on each of its opposite sides, and a connecting seat is provided between the rotating arms. The conductive element is disposed on the connecting seat.
4. The environmentally friendly gas load switch according to claim 1, characterized in that, The rotating arm is provided with wire holes and wire grooves, which are arranged along the length of the rotating arm. The vacuum bubble is connected to the conductive component by wires, which are located in the guide holes and wire grooves.
5. The environmentally friendly gas load switch according to claim 1, characterized in that, The return spring is a tension spring, and hooks are provided at both ends of the tension spring. The housing and the rotating arm are provided with hanging holes, and the two hooks are respectively provided in the hanging holes of the housing and the rotating arm.
6. The environmentally friendly gas load switch according to claim 1, characterized in that, The housing is provided with a guide rail, and the rotating arm is provided with a guide block, which is slidably disposed on the guide rail.
7. The environmentally friendly gas load switch according to claim 1, characterized in that, The housing is fixedly provided with a copper busbar, and the first stationary contact is fixedly connected to the copper busbar.
8. The environmentally friendly gas load switch according to claim 1, characterized in that, The environmentally friendly gas load switch also includes a grounding contact, which is fixedly disposed inside the housing and located in the rotation path of the moving contact.
9. The environmentally friendly gas load switch according to claim 1, characterized in that, The environmentally friendly gas load switch also includes a second stationary contact, which is fixedly disposed inside the housing and located in the rotation path of the moving contact.
10. The environmentally friendly gas load switch according to claim 1, characterized in that, The environmentally friendly gas load switch is equipped with several sets of moving contacts, a first stationary contact, and an arc-extinguishing device, and protrusions and recesses are alternately arranged between adjacent sets of moving contacts, first stationary contacts, and arc-extinguishing devices.