Gaseous high voltage switch

Abstract

This utility model relates to the field of circuit breaker technology, and more particularly to a gas-insulated high-voltage switch. The gas-insulated high-voltage switch includes a housing, a main shaft, a data acquisition component, and a transmission component. A contact system is housed within the housing. One end of the main shaft is fixed to the housing, while the other end extends out of the housing. The main shaft drives the contact system to rotate. The data acquisition component is mounted on the outer wall of the housing. One end of the transmission component is fixedly connected to the extended end of the main shaft, and the other end is connected to the data acquisition component. The data acquisition component is configured to collect the mechanical characteristic parameters of the main shaft during the opening and closing process. By mounting the data acquisition component on the outer wall of the housing and having the extended end of the main shaft outside the housing, and by using the transmission component to transmit the movement of the main shaft to the data acquisition component, the mechanical characteristic parameters of the main shaft during the opening and closing process can be effectively collected without disassembling or damaging the housing, thus avoiding the risk of gas leakage caused by disassembly and ensuring the sealing performance of the housing.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a gas-filled high-voltage switch. Background Technology

[0002] Currently, gas-insulated high-voltage switches (such as SF6 switches) are widely used in power systems due to their high insulation and high reliability. The mechanical characteristics of these switches are key parameters for evaluating equipment operating status and are directly related to the safe and stable operation of the power grid.

[0003] The spindle of existing gas-filled high-voltage switches is completely enclosed inside a gas chamber. After the chamber is sealed, the spindle cannot be directly exposed to the outside, making it difficult for sensors to connect directly to the spindle. If dynamic data during the opening and closing process is required, the gas chamber must be disassembled or the measurement must be completed before sealing. This not only compromises the airtightness of the gas chamber and increases the risk of gas leakage, but also fails to accurately reflect the mechanical characteristics of the switch during actual operation.

[0004] Therefore, there is an urgent need to design a gas-filled high-voltage switch to solve the above technical problems. Utility Model Content

[0005] The purpose of this invention is to propose an inflatable high-voltage switch that can collect the mechanical characteristics of the main shaft inside a closed enclosure without damaging the enclosure.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] This utility model provides a gas-filled high-voltage switch, comprising:

[0008] The enclosure contains a contact system; a through hole is provided on the side wall of the enclosure, and a sealing sleeve is embedded in the inner wall of the through hole;

[0009] A main shaft, one end of which is fixed inside the housing, and the other end of which passes through the sealing sleeve and extends out of the outside of the housing. The main shaft is used to drive the contact system to rotate.

[0010] A data acquisition component is disposed on the outer wall of the housing;

[0011] A transmission assembly, one end of which is fixedly connected to the extended end of the main shaft, and the other end of which is connected to the acquisition assembly, the acquisition assembly being configured to acquire the mechanical characteristic parameters of the main shaft during the opening and closing process.

[0012] As an optional technical solution for a gas-filled high-voltage switch, the transmission assembly includes a first fixing member, a second fixing member, and a connecting rod. The connecting rod is provided with a first mounting hole and a second mounting hole. The first mounting hole is sleeved on the extended end of the main shaft. The first fixing member is threadedly connected to the extended end of the main shaft to fix the connecting rod on the main shaft. One end of the second fixing member passes through the second mounting hole and is threadedly connected to the sensing contact of the acquisition assembly.

[0013] As an optional technical solution for a pneumatic high-voltage switch, the extended end of the main shaft is provided with a third mounting hole, and the third mounting hole is coaxially arranged with the main shaft;

[0014] The inner wall of the third mounting hole is provided with an internal thread, and the first fixing member is provided with an external thread. The first fixing member is threadedly connected to the third mounting hole to fix the connecting rod on the main shaft.

[0015] As an optional technical solution for a pneumatic high-voltage switch, the transmission assembly includes a connecting rod, one end of which is provided with a first keyway, and the outer periphery of the extended end of the main shaft is provided with a second keyway. The pneumatic high-voltage switch also includes a flat key, which is accommodated in the first keyway and the second keyway to connect the connecting rod to the main shaft. The other end of the connecting rod is provided with a slot, and the sensing contact of the acquisition assembly is engaged in the slot.

[0016] As an optional technical solution for a gas-filled high-voltage switch, the sealing sleeve is made of silicone.

[0017] As an optional technical solution for a gas-filled high-voltage switch, the gas-filled high-voltage switch further includes a third fixing component, and the acquisition component is detachably mounted on the outer wall of the housing through the third fixing component.

[0018] As an optional technical solution for a gas-filled high-voltage switch, the acquisition component includes a sleeve and a sensing contact. One end of the sensing contact is connected to the transmission component, and the other end is movably connected to the sleeve. One end of the transmission component can rotate with the main shaft, and the other end of the transmission component can drive the sensing contact to move linearly relative to the sleeve.

[0019] As an optional technical solution for a gas-filled high-voltage switch, the travel range of the sensing contact is not less than the maximum travel range of the main shaft for opening and closing.

[0020] As an optional technical solution for a gas-filled high-voltage switch, the sensing contact has a built-in displacement sensor and a data transmission module. The displacement sensor is electrically connected to the data transmission module. The displacement sensor is used to collect the displacement of the sensing contact. The data transmission module is used to transmit the displacement of the sensing contact collected by the displacement sensor to the terminal. The displacement is used to generate at least one mechanical characteristic parameter of the main shaft, including opening speed, closing speed, asynchronous opening and closing, overtravel, and opening distance.

[0021] As an optional technical solution for a gas-filled high-voltage switch, the gas-filled high-voltage switch also includes a protective cover, which is installed on the acquisition component and detachably connected to the housing.

[0022] The beneficial effects of this utility model include at least the following:

[0023] This utility model provides a gas-insulated high-voltage switch, which includes a housing, a main shaft, a data acquisition component, and a transmission component. The housing houses a contact system. A through-hole is formed in the side wall of the housing, and a sealing sleeve is embedded in the inner wall of the through-hole. One end of the main shaft is fixed inside the housing, and the other end passes through the sealing sleeve and extends out of the housing. The main shaft drives the contact system to rotate. The data acquisition component is disposed on the outer wall of the housing. One end of the transmission component is fixedly connected to the extended end of the main shaft, and the other end of the transmission component is connected to the data acquisition component. The data acquisition component is configured to collect the mechanical characteristic parameters of the main shaft during the opening and closing process.

[0024] In this way, by setting the acquisition component on the outer wall of the enclosure and setting the extended end of the main shaft outside the enclosure, the transmission component transmits the motion of the main shaft to the acquisition component, which can effectively collect the mechanical characteristic parameters of the main shaft during the opening and closing process, such as opening speed, closing speed, asynchronous opening and closing, overtravel and opening distance. This eliminates the need to disassemble or damage the enclosure, avoids the risk of gas leakage caused by disassembly, and ensures the sealing of the enclosure and the insulation performance of the gas-filled high-voltage switch. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the gas-filled high-voltage switch provided in Embodiment 1 of this utility model;

[0027] Figure 2 yes Figure 1 A magnified view of a section at point A in the middle;

[0028] Figure 3 This is a schematic diagram of the connecting rod provided in Embodiment 1 of this utility model;

[0029] Figure 4 This is a schematic diagram of the extended end of the spindle provided in Embodiment 1 of this utility model.

[0030] Figure Labels

[0031] 10. Housing; 11. Spindle; 12. Sealing sleeve; 13. Third mounting hole;

[0032] 20. Data acquisition component; 21. Sleeve; 22. Sensor contact;

[0033] 30. Transmission assembly; 31. First fixing member; 32. Second fixing member; 33. Connecting rod; 331. First mounting hole; 332. Second mounting hole. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0041] This embodiment provides a gas-filled high-voltage switch that can collect the mechanical characteristics of the main shaft inside a closed enclosure without damaging the enclosure.

[0042] like Figures 1-3As shown, the gas-filled high-voltage switch mainly includes a housing 10, a main shaft 11, a data acquisition component 20, and a transmission component 30. The housing 10 houses a contact system. One end of the main shaft 11 is located inside the housing 10 and connected to the contact system, while the other end of the main shaft 11 is located outside the housing 10 and defined as the extended end. The data acquisition component 20 is mounted on the outer wall of the housing 10. One end of the transmission component 30 is fixedly connected to the extended end of the main shaft 11, and the other end of the transmission component 30 is connected to the data acquisition component 20. The data acquisition component 20 is configured to collect the mechanical characteristic parameters of the main shaft 11 during the opening and closing process.

[0043] Based on the above design, in this embodiment, by setting the acquisition component 20 on the outer wall of the housing 10 and setting the protruding end of the main shaft 11 outside the housing 10, the transmission component 30 transmits the motion of the main shaft 11 to the acquisition component 20, effectively acquiring the mechanical characteristic parameters of the main shaft 11 during the opening and closing process, such as opening speed, closing speed, asynchronous opening and closing, overtravel, and opening distance. This eliminates the need to disassemble or damage the housing 10, avoiding the risk of gas leakage caused by disassembly and ensuring the sealing of the housing 10 and the insulation performance of the gas-filled high-voltage switch. Furthermore, the transmission component 30 transmits the motion parameters of the main shaft 11 (such as displacement and velocity) in real time, allowing the acquisition component 20 to continuously acquire data during the operation of the gas-filled high-voltage switch. Compared to the traditional method of "measuring before sealing the housing," this method more accurately reflects the actual operating status of the gas-filled high-voltage switch and improves the accuracy of fault prediction.

[0044] Optionally, the housing 10 in this embodiment can be configured as an SF6 gas box, that is, an inflatable SF6 switch, such as the LBS model or the CB model.

[0045] like Figures 1-3 As shown, in this embodiment, the pneumatic high-voltage switch further includes a first fixing member 31 and a second fixing member 32. The transmission assembly 30 includes a connecting rod 33, which has a first mounting hole 331 and a second mounting hole 332. The first mounting hole 331 is fitted onto the extended end. The first fixing member 31 is threadedly connected to the extended end to fix the connecting rod 33 onto the main shaft 11. One end of the second fixing member 32 passes through the second mounting hole 332 and is threadedly connected to the sensing contact 22 of the acquisition assembly 20. The threaded connection structure facilitates disassembly. When it is necessary to calibrate the acquisition assembly 20 or replace the connecting rod 33, it is not necessary to disassemble the entire device. The operation can be completed simply by loosening the first fixing member 31 or the second fixing member 32, thus shortening maintenance time.

[0046] For example, the first fastener 31 can be a nut or bolt, and the second fastener 32 can be a screw.

[0047] Specifically, one end of the connecting rod 33 is sleeved onto the extended end of the main shaft 11 through the first mounting hole 331, and is fixed circumferentially and axially with the first fixing member 31 to prevent relative sliding between the connecting rod 33 and the main shaft 11. For example, after the first fixing member 31 is tightened, an anti-loosening washer can be used to further ensure the connection is stable and prevent loosening caused by opening and closing vibration. The other end of the connecting rod 33 is threaded to the sensing contact 22 of the acquisition component 20 through the second mounting hole 332. For example, the screw passes through the second mounting hole 332 and is screwed into the threaded hole of the sensing contact 22 to ensure accurate transmission of displacement and avoid measurement errors caused by connection gaps.

[0048] like Figure 4 As shown, the extended end is further provided with a third mounting hole 13, which is coaxially arranged with the main shaft 11. This ensures the concentricity and stability of the connection between the connecting rod 33 and the main shaft 11, allowing the connecting rod 33 to be more firmly fixed on the main shaft 11 and reducing measurement errors caused by connection eccentricity or looseness. The inner wall of the third mounting hole 13 is provided with an internal thread, and the first fixing member 31 is provided with an external thread. The first fixing member 31 is threadedly connected to the third mounting hole 13 to fix the connecting rod 33 on the main shaft 11. This coaxial design and threaded connection method simplifies the installation process, improves installation efficiency, and reduces installation time. At the same time, due to the universality and standardization of threaded connections, it facilitates subsequent maintenance and replacement.

[0049] like Figures 1-2 As shown, the housing 10 in this embodiment has a through hole, and the protruding end of the main shaft 11 passes through the through hole and is placed on the outside of the housing 10; a sealing sleeve 12 is embedded in the inner wall of the through hole, and the sealing sleeve 12 is used to prevent gas leakage inside the housing 10.

[0050] Specifically, the sealing sleeve 12 fills the gap between the main shaft 11 and the through hole of the housing 10, blocking the leakage path of gas inside the housing 10. For example, the sealing sleeve 12 can be configured as a double-lip seal, which can simultaneously prevent gas leakage and the entry of external dust, maintain stable gas pressure inside the housing 10, and improve the insulation performance and mechanical life of the gas-filled high-voltage switch. Of course, in some embodiments, the sealing sleeve 12 can also be configured as a silicone seal, a metal seal ring, or other combined sealing structures, etc.

[0051] The gas-filled high-voltage switch in this embodiment also includes a third fixing member (not shown in the figure), and the acquisition component 20 is detachably mounted on the outer wall of the housing 10 through the third fixing member.

[0052] Specifically, the third fastener allows the data acquisition assembly 20 to be installed at different locations on the outer wall of the enclosure 10 (such as the top or side), adapting to the spatial layout requirements of different switch models. For example, for a compact SF6 switch, the data acquisition assembly 20 can be installed laterally on the side of the enclosure 10 to avoid interference with other components.

[0053] For example, the third fastener can be a bolt, a clip, or a magnetic device.

[0054] The third fastener is detachably mounted on the outer wall of the housing 10. This facilitates future upgrades to the acquisition component 20 (such as replacing a high-precision sensor). Without modifying the structure of the housing 10, the acquisition component 20 can be replaced simply by loosening the third fastener, thus reducing equipment upgrade costs.

[0055] like Figures 1-2 As shown, the extended end of the main shaft 11 and the acquisition component 20 are both located on the same side of the housing 10. In this embodiment, the acquisition component 20 includes a sleeve 21 and a sensing contact 22. One end of the sensing contact 22 is connected to the transmission component 30, and the other end is movably connected to the sleeve 21. One end of the transmission component 30 can rotate with the main shaft 11, and the other end of the transmission component 30 can drive the sensing contact 22 to move linearly relative to the sleeve 21. A third fixing member detachably mounts the sleeve 21 onto the outer wall of the housing 10.

[0056] For example, the inner wall of the sleeve 21 is provided with a guide rail, and the end of the sensing contact 22 away from the connecting rod 33 is slidably connected to the guide rail. This allows the sensing contact 22 to move linearly relative to the sleeve 21, dynamically adapting to the rotational movement of the main shaft 11 during opening and closing. For instance, when the main shaft 11 rotates, the connecting rod 33 drives the sensing contact 22 to move axially in a linear motion. The guide rail structure inside the sleeve 21 (such as a linear bearing) ensures the accuracy of the linear motion direction, avoiding measurement errors caused by radial offset. At the same time, the sleeve 21 also provides physical protection for the sensing contact 22, preventing external collisions or foreign objects from affecting its performance. For example, the sleeve 21 is made of metal and treated with anti-corrosion measures, which can withstand harsh environments such as outdoor humidity and salt spray, extending the service life of the acquisition component 20.

[0057] Optionally, the pneumatic high-voltage switch in this embodiment also includes a protective cover (not shown in the figure), which is installed on the data acquisition component 20 and detachably connected to the housing 10. The protective cover can prevent dust, rainwater, small animals, etc. from damaging the data acquisition component 20. For example, in an outdoor substation scenario, the protective cover can prevent bird droppings from accumulating and affecting the operation of the data acquisition component 20, or prevent rainwater from seeping in and causing a short circuit.

[0058] For example, the protective cover in this embodiment can be made of metal or engineering plastic.

[0059] Preferably, in this embodiment, the travel range of the sensing contact 22 is not less than the maximum travel range of the main shaft 11 for opening and closing, thereby ensuring that the main shaft 11 can be effectively monitored throughout its entire travel range (such as the entire displacement interval from opening to closing), avoiding the omission of key data (such as overtravel and maximum opening distance) due to insufficient travel. For example, if the maximum travel of the main shaft 11 is 50mm, the travel of the sensing contact 22 is designed to be 60mm, which can cover displacement changes under extreme operating conditions and ensure the accuracy of the calculation of mechanical characteristic parameters (such as the asynchronicity of opening and closing).

[0060] In this embodiment, the sensing contact 22 incorporates a displacement sensor and a data transmission module. The displacement sensor and the data transmission module are electrically connected. The displacement sensor is used to collect the displacement of the sensing contact 22, and the data transmission module is used to transmit the displacement collected by the displacement sensor to the terminal. For example, the terminal in this embodiment can be a microcomputer terminal with a built-in computer program and a built-in microcomputer processing unit. The microcomputer processing unit is used to calculate the displacement of the main shaft 11 based on the displacement of the sensing contact 22. Furthermore, the microcomputer processing unit can also analyze the displacement collected by the displacement sensor of the sensing contact 22 and generate at least one of the mechanical characteristic parameters of the main shaft 11, including its opening speed, closing speed, asynchronous opening and closing, overtravel, and opening distance.

[0061] Specifically, the displacement sensor converts the mechanical displacement of the sensing contact 22 into an electrical signal, which is then uploaded to the microcomputer terminal in real time via a data transmission module (such as an RS485 communication module), thus avoiding the lag and error of manual measurement.

[0062] In this embodiment, the displacement sensor is connected to the sensing contact 22. When the main shaft 11 opens or closes, the connecting rod 33 drives the sensing contact 22 to move axially. The displacement sensor detects the displacement of the sensing contact 22 and converts it into an electrical signal. The signal output terminal of the displacement sensor is connected to the input terminal of the data transmission module via a ribbon cable, so that the electrical signal is transmitted to the data transmission module and converted into a digital signal. Then, the data transmission module transmits the digital signal to the microcomputer processing unit of the microcomputer terminal via a cable. The microcomputer processing unit automatically analyzes the displacement and time data using a preset algorithm (such as calculus calculation speed, difference method to calculate asynchrony), and quickly generates key parameters such as opening speed and closing speed, avoiding human calculation errors.

[0063] Optionally, the displacement sensor in this embodiment can be configured as a magnetostrictive sensor, which has an accuracy of ±0.01mm, meeting the high precision requirements of the power system for mechanical characteristic parameters.

[0064] Example 2

[0065] This embodiment provides a pneumatic high-voltage switch, which differs from the first embodiment in that: the transmission component 30 in this embodiment includes a connecting rod 33, one end of which is provided with a first keyway, and the outer periphery of the extended end is provided with a second keyway. The pneumatic high-voltage switch also includes a flat key, which is accommodated in the first keyway and the second keyway so that the connecting rod 33 is keyed to the main shaft 11; the other end of the connecting rod 33 is provided with a slot, and the sensing contact 22 of the acquisition component 20 is engaged in the slot.

[0066] Specifically, the flat key is embedded in the first keyway of the connecting rod 33 and the second keyway of the main shaft 11. Torque is transmitted through the two sides of the flat key, effectively preventing circumferential rotation between the connecting rod 33 and the main shaft 11. This also avoids the minor gap problems that may exist in hinged connections, thus ensuring that the displacement of the opening and closing stroke can be accurately transmitted to the acquisition component 20. For example, during the opening process, the rotation angle of the main shaft 11 is synchronously transmitted to the connecting rod 33 via the flat key, ensuring that the displacement measurement value of the sensing contact 22 of the acquisition component 20 has no lag deviation from the actual stroke, improving measurement accuracy.

[0067] Furthermore, the slot on the connecting rod 33 and the snap-fit ​​structure of the sensing contact 22 of the acquisition component 20 occupy little space, making it easy to install in the limited space outside the housing 10. At the same time, the snap-fit ​​structure can provide a certain elastic buffer to avoid damage to components caused by rigid connection and extend service life.

[0068] Alternatively, the slot can be configured as a dovetail groove or a U-shaped groove.

[0069] The remaining structures of the gas-filled high-voltage switch in this embodiment are the same as those in Embodiment 1, and will not be described in detail here.

[0070] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0071] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A gas-filled high-voltage switch, characterized in that, include: The box (10) is equipped with a contact system; a through hole is provided on the side wall of the box (10), and a sealing sleeve (12) is embedded in the inner wall of the through hole; Main shaft (11), one end of which is fixed inside the housing (10), and the other end of which passes through the sealing sleeve (12) and extends out of the housing (10). The main shaft (11) is used to drive the contact system to rotate. A data acquisition component (20) is disposed on the outer wall of the housing (10); A transmission assembly (30) is provided, one end of which is fixedly connected to the extended end of the main shaft (11), and the other end of which is connected to the acquisition assembly (20). The acquisition assembly (20) is configured to acquire the mechanical characteristic parameters of the main shaft (11) during the opening and closing process.

2. The gas-filled high-voltage switch according to claim 1, characterized in that, The transmission assembly (30) includes a first fixing member (31), a second fixing member (32), and a connecting rod (33). The connecting rod (33) is provided with a first mounting hole (331) and a second mounting hole (332). The first mounting hole (331) is sleeved on the extended end of the main shaft (11). The first fixing member (31) is threadedly connected to the extended end of the main shaft (11) to fix the connecting rod (33) on the main shaft (11). One end of the second fixing member (32) passes through the second mounting hole (332) and is threadedly connected to the sensing contact (22) of the acquisition assembly (20).

3. The gas-filled high-voltage switch according to claim 2, characterized in that, The extended end of the main shaft (11) is provided with a third mounting hole (13), and the third mounting hole (13) is coaxially arranged with the main shaft (11); The inner wall of the third mounting hole (13) is provided with an internal thread, and the first fixing member (31) is provided with an external thread. The first fixing member (31) is threadedly connected to the third mounting hole (13) to fix the connecting rod (33) on the main shaft (11).

4. The gas-filled high-voltage switch according to claim 1, characterized in that, The pneumatic high-voltage switch also includes a flat key. The transmission assembly (30) includes a connecting rod (33). One end of the connecting rod (33) is provided with a first keyway. The outer periphery of the extended end of the main shaft (11) is provided with a second keyway. The flat key is accommodated in the first keyway and the second keyway so that the connecting rod (33) is keyed to the main shaft (11). The other end of the connecting rod (33) is provided with a slot, and the sensing contact (22) of the acquisition assembly (20) is engaged in the slot.

5. The gas-filled high-voltage switch according to claim 1, characterized in that, The sealing sleeve (12) is made of silicone.

6. The gas-filled high-voltage switch according to claim 1, characterized in that, The pneumatic high-voltage switch also includes a third fixing member, and the acquisition component (20) is detachably mounted on the outer wall of the housing (10) via the third fixing member.

7. The gas-filled high-voltage switch according to claim 1, characterized in that, The acquisition component (20) includes a sleeve (21) and a sensing contact (22). One end of the sensing contact (22) is connected to the transmission component (30), and the other end is movably connected to the sleeve (21). One end of the transmission component (30) can rotate with the main shaft (11), and the other end of the transmission component (30) can drive the sensing contact (22) to move linearly relative to the sleeve (21).

8. The gas-filled high-voltage switch according to claim 7, characterized in that, The travel range of the sensing contact (22) is not less than the maximum travel range of the main shaft (11) for opening and closing.

9. The gas-filled high-voltage switch according to claim 7, characterized in that, The sensing contact (22) has a built-in displacement sensor and a data transmission module. The displacement sensor is electrically connected to the data transmission module. The displacement sensor is used to collect the displacement of the sensing contact (22). The data transmission module is used to transmit the displacement of the sensing contact (22) collected by the displacement sensor to the terminal. The displacement is used to generate at least one mechanical characteristic parameter of the main shaft (11) among the opening speed, closing speed, asynchronous opening and closing, overtravel, and opening distance.

10. The gas-filled high-voltage switch according to any one of claims 1-9, characterized in that, The inflatable high-voltage switch also includes a protective cover, which is mounted on the acquisition component (20) and detachably connected to the housing (10).

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