switching device

Abstract

The application relates to a switch device. By arranging a shell and a plurality of electric connection assemblies, a plurality of mutually independent sub-cavities of the shell contain insulating gas, and a more stable insulating environment can be provided for the electric connection assemblies. By arranging a plurality of connection terminals on the cavity wall of the sub-cavities, all electric connection components are electrically connected through the corresponding connection terminals, so that the electric connection of the electric connection components of two adjacent sub-cavities can be realized. By arranging a moisture absorption assembly in the second cavity, the moisture in the insulating gas can be effectively absorbed, and the arrangement of the partition piece can more stably accommodate the moisture absorption assembly in the second cavity. Meanwhile, when the electric connection components are electrified, the components, such as the moisture absorption assembly and the partition piece, accommodated in the accommodation cavity of the electric connection components can be at the same potential as the electric connection components, the influence on the electric field is reduced, the moisture in the insulating gas is absorbed, the insulation of the device is improved, and the installation components are reduced, so that the production cost is reduced.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to switching devices. Background Technology

[0002] High-voltage switchgear is a crucial piece of equipment in power systems, and its stable operation directly impacts the safety and stability of the power system. Typically, switchgear uses insulating gas as the insulating medium; however, the insulating performance of the gas is closely related to its moisture content. Currently, however, switchgear often suffers from low insulation performance and increased production costs. Summary of the Invention

[0003] Therefore, it is necessary to provide a switching device that improves the insulation performance of the switching device while reducing production costs.

[0004] This application provides a switching device, which includes:

[0005] The housing has multiple independent sub-cavities for containing insulating gases; and

[0006] Multiple electrical connection components are arranged one-to-one in each of the sub-cavities;

[0007] The electrical connection components include:

[0008] An electrical connector has a receiving cavity and an opening communicating with the receiving cavity, the receiving cavity communicating with a corresponding sub-cavity by means of the opening; the electrical connector has multiple connection terminals, the multiple connection terminals being disposed on the cavity wall of the corresponding sub-cavity, and all electrical connectors being electrically connected by means of the corresponding connection terminals.

[0009] A partition is disposed within a receiving cavity, dividing the receiving cavity into a first cavity and a second cavity; the first cavity has an opening on its wall, and the partition has multiple first through holes, connecting the first cavity and the second cavity via multiple second through holes; and

[0010] The moisture-absorbing component is located inside the second cavity.

[0011] In one embodiment, the moisture-absorbing component includes a plurality of adsorption units, which are configured as spherical.

[0012] In one embodiment, the adsorption unit is configured as a molecular sieve; and / or

[0013] The diameter of the adsorption unit is 1 mm to 6 mm.

[0014] In one embodiment, the moisture-absorbing component further includes a packaging component having a receiving cavity and a plurality of second through holes communicating with the receiving cavity, wherein the adsorption unit is received within the receiving cavity.

[0015] In one embodiment, the packaging material is non-woven fabric.

[0016] In one embodiment, the partition and the cavity wall of the receiving cavity are detachably connected.

[0017] In one embodiment, the electrical connector includes a stepped portion disposed on the cavity wall of the receiving cavity;

[0018] The separator abuts against the stepped portion and is detachably connected to the stepped portion.

[0019] In one embodiment, the housing includes:

[0020] The shell body has a cavity; and

[0021] Multiple insulating components are disposed within the cavity, dividing the cavity into multiple independent sub-cavities;

[0022] The connecting terminals are located on the corresponding insulating components.

[0023] In one embodiment, the shell body includes a plurality of sub-bodies;

[0024] Two adjacent sub-bodies are detachably connected, and an insulating component is provided at the connection point of the two adjacent sub-bodies. The sub-bodies and the insulating component connected to the sub-bodies together define the sub-cavity.

[0025] In one embodiment, the switching device further includes a plurality of valves, with one valve provided on the cavity wall of each sub-cavity.

[0026] In the aforementioned switching device, the switching device includes at least a housing and multiple electrical connection components. By setting up a housing and multiple electrical connection components, the multiple independent sub-cavities of the housing contain insulating gas, providing a more stable insulation environment for the electrical connection components. The insulating gas can effectively reduce the generation of electric arcs and lower the risk of discharge accidents in the switching device. Furthermore, by setting the receiving cavity of the electrical connector to communicate with the sub-cavities through openings, the insulating gas can more fully surround the electrical connector, further enhancing the insulation effect. By setting multiple connection terminals on the cavity walls of the sub-cavities, all electrical connectors are electrically connected by corresponding connection terminals, thereby achieving electrical connection between the electrical connectors of adjacent sub-cavities. The moisture-absorbing component is placed in the second cavity, effectively absorbing moisture from the insulating gas. The partition further stabilizes the moisture-absorbing component within the second cavity. Simultaneously, when the electrical connector is energized, the moisture-absorbing component and the partition, along with other components housed within the receiving cavity of the electrical connector, can be at the same potential as the electrical connector, reducing the impact on the electric field. While absorbing moisture from the insulating gas and improving the insulation of the device, this reduces the number of installation components, thereby reducing production costs. Therefore, the embodiments of this application improve the stability and reliability of the entire switching device.

[0027] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.

[0029] In the attached diagram:

[0030] Figure 1 This is a partial cross-sectional view of a switching device in one embodiment of a related technology;

[0031] Figure 2 This is a partial structural cross-sectional schematic diagram of a switching device provided in some embodiments of this application;

[0032] Figure 3 This is a partial cross-sectional view of a switching device provided in some other embodiments of this application.

[0033] The reference numerals in the detailed embodiments are as follows:

[0034] Casing 10;

[0035] subcavity 20;

[0036] Electrical connector 30;

[0037] Moisture-absorbing component 40, frame 41;

[0038] Switching device 100;

[0039] Shell 110; sub-cavity 111; shell body 112; sub-body 112a; cavity c; insulating component 113;

[0040] Electrical connection assembly 120, electrical connector 121, receiving cavity Q, first cavity Q1, second cavity Q2, stepped portion b, opening K, connecting terminal 121a, separator 122, moisture absorption assembly 123, adsorption unit 123a, packaging component 123b, receiving cavity r. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and 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, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, where the terms "first" and "second" appear, these terms are 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 with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0047] In electrical equipment, the insulation performance of the conductors and insulating gases within the casing is crucial. Moisture reduces the insulation strength of the insulating gas because it ionizes under an electric field, creating ionized conductive channels and increasing the likelihood of leakage. For example, in high-voltage electrical equipment, even small amounts of moisture can cause partial discharge, gradually damaging the insulating medium over time and ultimately leading to equipment failure.

[0048] The inventors of this application have noted that directly removing moisture from insulating gases is quite difficult. Attempting to treat moisture directly within the housing may interfere with the normal operation of the conductors, and operation within a closed housing is limited by space and ease of use. Furthermore, directly adding desiccants or other moisture-absorbing substances into the housing may introduce other problems, such as the desiccant decomposing and producing impurities after absorbing moisture, or the desiccant shifting during equipment operation, affecting the stability of the equipment.

[0049] The inventors of this application have attempted to place the moisture-absorbing component in a device located outside the housing. Placing the moisture-absorbing component outside the housing reduces the space inside the housing, allowing for a more rational arrangement of the conductors within the housing. Specifically, referring to the reference... Figure 1 , Figure 1A schematic diagram of a partial switching device in one embodiment of the related technology is shown. Part of the switching device includes a housing 10, a sub-cavity 20, an electrical connector 30, and a moisture-absorbing component 40. The moisture-absorbing component 40 further includes a frame 41 and is disposed on the housing 10. However, the inventors of this application have noted that when the moisture-absorbing component 40 is disposed on the outer surface of the housing 10, when the electrical connector 30 is energized, the electrical connector 30 generates a high voltage. Since the moisture-absorbing component 40 is higher than the surface of the housing 10, this may cause distortion of the electric field distribution. Under high voltage, the electric field can become concentrated in the protruding portion, i.e., the portion higher than the surface of the housing 10. When the moisture-absorbing component 40 is disposed on the inner surface of the housing 10, when the electrical connector 30 is energized, the presence of holes on the surface of the housing 10 may disrupt the uniformity of the electric field, resulting in an uneven distribution of the electric field inside the device, thereby reducing the insulation performance of the device.

[0050] Therefore, in related technologies, the method of setting a moisture-absorbing component 40 on the housing 10 can affect the magnitude of the electric field and may even bring safety hazards, such as increasing the humidity of the insulating gas inside the switch device, leakage of insulating gas, and arcing of gas, which may affect the operation of the switch device.

[0051] Based on this, the inventors of this application, through in-depth research, discovered that, without affecting the flow and strength of the electrical connector, a hollow design can be made for the electrical connector. When the electrical connector is conducting, the components inside the cavity of the electrical connector and the electrical connector are at the same potential. The internal components can be shielded by the electrical connector itself and will not affect the electric field. This can improve the phenomenon of partial discharge caused by uneven electric field distribution, improve the insulation and safety performance of the device, and at the same time reduce production costs.

[0052] Figure 2 This paper shows a partial cross-sectional structural schematic diagram of a switching device provided in some embodiments of this application; Figure 3 A partial cross-sectional structural schematic diagram of a switching device provided in other embodiments of this application is shown; for ease of explanation, only the content related to the embodiments of this application is shown.

[0053] Please refer to Figure 2 and Figure 3 This application provides a switching device 100, which includes a housing 110 and an electrical connection assembly 120.

[0054] Specifically, the housing 110 has a plurality of independent sub-cavities 111, which are used to contain insulating gas. In the embodiments of this application, such as Figure 1 As shown, only one sub-cavity 111 of the housing 110 is illustrated.

[0055] "Multiple independent sub-cavities 111" can be understood as each sub-cavity 111 being independent of the others, thus making the internal environment of each sub-cavity 111 relatively independent. The shape and size of the sub-cavities 111 can be set according to the actual situation, and no specific restrictions are made here.

[0056] It should be noted that the insulating gas can be sulfur hexafluoride (SF6) gas or other environmentally friendly gases (such as nitrogen), and can be set according to the actual situation. This application embodiment does not impose specific restrictions on this.

[0057] Multiple electrical connection components 120 are disposed one-to-one in all sub-cavities 111. It is understood that each electrical connection component 120 is located in a corresponding sub-cavity 111, and the electrical connection components 120 of two adjacent sub-cavities 111 can be interconnected.

[0058] The electrical connection assembly 120 includes an electrical connector 121, a separator 122, and a moisture-absorbing assembly 123.

[0059] Specifically, the electrical connector 121 has a receiving cavity Q and an opening K communicating with the receiving cavity Q. The receiving cavity Q is connected to the corresponding sub-cavity 111 via the opening K. The electrical connector 121 is a component for conducting electricity. It should be noted that the shape and size of the electrical connector 121 in each sub-cavity 111 can be different or the same, and can be set according to the actual situation.

[0060] The shape and size of the accommodating cavity Q and the opening K can be set according to the actual situation, and the embodiments of this application do not impose specific limitations on this.

[0061] The receiving cavity Q is connected to the corresponding sub-cavity 111 via the opening K. It can be understood that when the corresponding sub-cavity 111 contains insulating gas, the insulating gas can also enter the receiving cavity Q via the opening K.

[0062] Electrical connector 121 has multiple connection terminals 121a, which are disposed on the cavity wall of the corresponding sub-cavity 111. All electrical connectors 121 are electrically connected by means of the corresponding connection terminals 121a.

[0063] The electrical connector 121 has multiple connection terminals 121a. It is understood that the electrical connector 121 may have 2 connection terminals 121a, 3 connection terminals 121a, or 4 connection terminals 121a, which can be set according to the actual situation. This application embodiment does not impose any restrictions on this.

[0064] It should be noted that the multiple connection terminals 121a of the electrical connector 121 can be connected in series and / or in parallel, and the selection can be made according to the actual situation, without specific restrictions. Figure 2 As shown, the configuration of a connection terminal 121a in the electrical connector 121 is illustrated.

[0065] All electrical connectors 121 are electrically connected via corresponding connector terminals 121a. The following scenarios are possible: 1. Adjacent connector terminals 121a can be connected together by bolts; 2. Adjacent connector terminals 121a can also be plug-in connected, with one connector terminal 121a shaped like a plug and the other shaped like a socket. The choice can be made according to the actual situation. Of course, other methods of electrical connection are also possible, as long as all electrical connectors 121 can be electrically connected via corresponding connector terminals 121a. This application embodiment does not impose specific limitations in this regard.

[0066] The partition 122 is disposed in the receiving cavity Q and divides the receiving cavity Q into a first cavity Q1 and a second cavity Q2. The cavity wall of the first cavity Q1 is provided with an opening K, and the partition 122 is provided with a plurality of first through holes (not shown in the figure). The first cavity Q1 and the second cavity Q2 are connected by the plurality of first through holes.

[0067] The separator 122 can refer to a component that divides the receiving cavity Q into a first cavity Q1 and a second cavity Q2. It should be noted that the first cavity Q1 can be a single cavity or it can include multiple sub-cavities, depending on the actual situation. Of course, as... Figure 3 As shown, the cavity wall of the receiving cavity Q may be provided with an opening K, and the partition 122 is provided in the opening K of the receiving cavity Q. In this way, the partition 122 may not divide the receiving cavity Q into a first cavity Q1 and a second cavity Q2.

[0068] The separator 122 is provided with a plurality of first through holes, which allow the insulating gas to enter the receiving cavity Q when the sub-cavity 111 contains the insulating gas.

[0069] A moisture-absorbing component 123 is disposed within the second cavity Q2. The moisture-absorbing component 123 can refer to a component used to absorb moisture from the insulating gas in order to improve the insulating performance of the insulating gas. By disposing the moisture-absorbing component 123 within the second cavity Q2, the separator 122 can also more stably accommodate the moisture-absorbing component 123 within the second cavity Q2.

[0070] Thus, by providing a housing 110 and multiple electrical connection components 120, the multiple independent sub-cavities 111 of the housing 110 contain insulating gas, providing a more stable insulation environment for the electrical connection components 120. The insulating gas can effectively reduce the generation of electric arcs and lower the risk of discharge accidents in the switching device 100. Furthermore, by providing the receiving cavity Q of the electrical connector 121 to communicate with the sub-cavities 111 through the opening K, the insulating gas can more fully surround the electrical connector 121, further enhancing the insulation effect. By providing multiple connection terminals 121a on the cavity walls of the sub-cavities 111, all electrical connectors 121 are electrically connected by means of corresponding connection terminals 121a, thereby enabling electrical connection of the electrical connectors 121 of adjacent sub-cavities 111. By placing the moisture-absorbing component 123 within the second cavity Q2, moisture in the insulating gas can be effectively absorbed. The partition 122 further stabilizes the moisture-absorbing component 123 within the second cavity Q2. After the moisture-absorbing component 123 absorbs moisture from the insulating gas, the multiple first through holes on the partition 122 prevent any impurities from entering the sub-cavity 111. Simultaneously, when the electrical connector 121 is energized, the moisture-absorbing component 123 and the partition 122, along with other components housed within the cavity Q of the electrical connector 121, can be at the same electrical potential as the electrical connector 121, reducing the impact on the electric field. This not only absorbs moisture from the insulating gas and improves the insulation of the device, but also reduces the number of components, making installation easier and reducing production costs. Therefore, this embodiment improves the stability and reliability of the entire switching device 100.

[0071] In some embodiments, please refer to Figure 2 The moisture absorption component 123 includes multiple adsorption units 123a, and the adsorption units 123a are spherical in shape.

[0072] It is understood that the adsorption units 123a can independently perform their moisture absorption function. The adsorption unit 123a refers to the component that adsorbs moisture from the insulating gas. Specifically, the moisture absorption assembly 123 can select an appropriate number of adsorption units 123a based on the size of the receiving cavity Q, in order to better adsorb moisture from the insulating gas.

[0073] Thus, by configuring the moisture-absorbing component 123 to include multiple adsorption units 123a, and constructing the adsorption units 123a in a spherical shape, the surface area for adsorption can be increased. Compared to other shapes, the spherical shape has the largest surface area for the same volume, allowing each adsorption unit 123a to contact the surrounding insulating gas, further increasing the effective area for adsorbing moisture from the insulating gas, effectively drying the insulating gas, and improving the insulation performance of the device. Simultaneously, due to the isotropic nature of the spherical shape, the adsorption units 123a can more uniformly adsorb air from the insulating gas, improving the reliability of the device.

[0074] In some embodiments, please refer to Figure 2 The adsorption unit 123a is configured as a molecular sieve; and / or the diameter of the adsorption unit 123a is 1 mm to 6 mm.

[0075] Specifically, the main components of molecular sieves are aluminum hydroxide, water glass, and alkali metals. They typically have strong adsorption capacity and can effectively adsorb moisture in insulating gases, thereby improving the dryness of the insulating gases.

[0076] Because the size of water molecules matches the micropore size of the molecular sieve, the molecular sieve can selectively adsorb water molecules while adsorbing less of other gases (such as insulating gases) in the device, thus ensuring that the composition and performance of the insulating gases are not affected.

[0077] The diameter of the adsorption unit 123a is set to 1 mm to 6 mm. Specifically, the diameter of the adsorption unit 123a can be 1 mm, 2 mm, 3 mm, 4 mm, 5.1 mm, or 6 mm. Of course, the diameter of the adsorption unit 123a can also be other values ​​from 1 mm to 6 mm, which can be selected according to the actual situation. In this embodiment, no specific limitation is made.

[0078] Thus, by configuring the adsorption unit 123a as a molecular sieve, the dryness of the insulating gas can be improved. And / or, by setting the diameter of the adsorption unit 123a to 1 mm to 6 mm, the adsorption unit 123a can effectively adsorb moisture in the insulating gas while improving the efficiency of moisture adsorption.

[0079] In some embodiments, please refer to Figure 2 The moisture-absorbing component 123 also includes a package 123b.

[0080] The packaging component 123b has a accommodating cavity r and multiple second through holes (not shown in the figure) communicating with the accommodating cavity r, and the adsorption unit 123a is housed within the accommodating cavity r. Specifically, the packaging component 123b can refer to a component that packages multiple adsorption units 123a together. It is understood that the packaging component 123b has an accommodating cavity r inside, which can be used to place the adsorption unit 123a, and the packaging component 123b is provided with multiple second through holes to allow insulating gas to enter and exit the accommodating cavity r, allowing moisture in the insulating gas to enter the accommodating cavity r and be absorbed by the adsorption unit 123a, while also allowing the dried insulating gas to be discharged.

[0081] The shape and size of the packaging 123b can be set according to the number of adsorption units 123a, and this embodiment does not impose specific limitations on this.

[0082] Thus, by using packaging component 123b to house the adsorption unit 123a within the receiving cavity r, multiple adsorption units 123a can be placed more stably within the receiving cavity Q. During the operation of the switching device, it may be subject to vibration, impact, or other factors. Packaging component 123b can reduce the occurrence of multiple adsorption units 123a moving randomly within the device, thereby improving the stability and reliability of the device.

[0083] In some embodiments, please refer to Figure 2 The material of package 123b is non-woven fabric.

[0084] Thus, using non-woven fabric as the material for packaging 123b allows insulating gas to flow more smoothly into and out of the accommodating cavity r. Simultaneously, the typically soft texture of non-woven fabric allows it to more flexibly accommodate multiple adsorption units 123a according to their shape and number. The non-woven fabric material also improves the aging resistance of packaging 123b, extends its service life, and reduces production costs.

[0085] Of course, in some other embodiments, the packaging 123b can be made of other materials, as long as the insulating gas can enter and exit the accommodating cavity r. This application does not impose specific limitations on this.

[0086] In some embodiments, please refer to Figure 2 The partition 122 and the cavity wall of the receiving cavity Q are detachably connected.

[0087] Specifically, the partition 122 and the cavity wall of the receiving cavity Q can be detachably connected by means of bolt connection, snap connection or slot connection, etc. The specific detachable connection method can be set according to the actual situation, and this application embodiment does not impose specific limitations on this.

[0088] Thus, by making the partition 122 and the cavity wall of the receiving cavity Q detachably connected, the partition 122 can be more easily connected to the cavity wall of the receiving cavity Q, thereby improving the reliability of the device.

[0089] In some embodiments, please refer to Figure 2 The electrical connector 121 includes a stepped portion b disposed on the cavity wall of the receiving cavity Q.

[0090] Specifically, the partition 122 abuts against the stepped portion b and is detachably connected to the stepped portion b. The stepped portion b can be formed by machining the cavity wall of the receiving cavity Q, such as through cutting, casting, or other processes. The shape, size, and location of the stepped portion b can be set according to actual conditions, and this embodiment does not impose specific limitations on them.

[0091] The stepped portion b serves to position and support the partition 122. The stepped portion b allows the partition 122 to be installed more accurately within the receiving cavity Q, and also reduces unnecessary displacement of the partition 122.

[0092] The separator 122 is detachably connected to the step portion b. There are several ways to detach it. For example, it can be connected by bolts. Threaded holes are provided at corresponding positions on the step portion b and the separator 122. Bolts are used to fix the separator 122 and the step portion b together. Alternatively, it can be connected by snap-fit. Snap-fit ​​structures are designed on the step portion b and the separator 122 to cooperate with each other. The snap-fit ​​is tightened during installation and is easier to open during disassembly.

[0093] Thus, by abutting the partition 122 against the stepped portion b and detachably connecting it to the stepped portion b, the partition 122 can be more stably connected to the cavity wall of the receiving cavity Q. Furthermore, when the partition 122 needs to be replaced, it can be more quickly removed from the stepped portion b.

[0094] In some embodiments, please refer to Figure 2 The housing 110 includes a housing body 112 and a plurality of insulating components 113.

[0095] The housing body 112 has a cavity c. Multiple insulating members 113 are disposed within the cavity c, dividing the cavity c into multiple independent sub-cavities 111. Connecting terminals 121a are disposed on the corresponding insulating members 113.

[0096] Specifically, multiple insulating elements 113 are disposed within the cavity c of the housing body 112, and the insulating elements 113 can divide the cavity c into multiple independent sub-cavities 111. The insulating elements 113 can be made of ceramic or epoxy resin, etc., and can be configured according to actual conditions. This application embodiment does not impose specific limitations on this.

[0097] Thus, by setting multiple insulating elements 113 within the cavity c and dividing the cavity c into multiple independent sub-cavities 111, in the event of an electrical fault or insulating gas leak in a sub-cavity 111, the independent nature of each sub-cavity 111 reduces the scope of the fault and improves the overall safety and reliability of the device. Simultaneously, by placing the connecting terminal 121a on the corresponding insulating element 113, the insulating properties of the insulating element 113 can be utilized to more effectively reduce the occurrence of accidental electrical contact between the connecting terminal 121a and the housing body 112 or other unrelated conductive components, enhancing the electrical insulation of the entire switching device 100. Furthermore, the relatively stable structure of the insulating element 113 provides a more fixed and reliable installation environment for the connecting terminal 121a, reducing the possibility of loosening or displacement of the connecting terminal 121a due to vibration, external impact, or other factors, thus improving the stability and continuity of the electrical connection.

[0098] In some embodiments, please refer to Figure 2 The shell body 112 includes multiple sub-bodies 112a.

[0099] Two adjacent sub-bodies 112a are detachably connected, and an insulating member 113 is provided at the connection point of the two adjacent sub-bodies 112a. The sub-bodies 112a and the insulating member 113 connected to the sub-bodies 112a together define the sub-cavity.

[0100] Specifically, the two adjacent sub-bodies 112a are configured to be detachably connected. The detachable connection method can be bolt connection, snap-fit ​​connection, or slot and block connection, etc., which can be set according to the actual situation.

[0101] The sub-body 112a and the connected insulating member 113 together define the sub-cavity 111. That is, the insulating member 113 can be part of the boundary of the sub-cavity 111. The insulating member 113, together with the inner wall of the sub-body 112a and other structures, encloses a relatively closed and independent space that can be used to contain insulating gas and connect the corresponding connecting terminal 121a.

[0102] Thus, by providing a detachable connection between two adjacent sub-bodies 112a, operators can more easily connect each sub-bodies 112a as required when assembling the switchgear. Furthermore, in situations requiring internal maintenance, repair, or replacement of a specific sub-bodies 112a within the housing 112, the connected sub-bodies 112a can be disassembled more easily, further improving operational convenience and flexibility. Simultaneously, the presence of an insulating component 113 at the connection point between two adjacent sub-bodies 112a enhances the insulation between them and improves the sealing at the connection, thereby improving the overall insulation and safety of the switchgear 100.

[0103] In some embodiments, the switching device 100 further includes a plurality of valves (not shown in the figure).

[0104] Specifically, each sub-cavity 111 has a valve on its cavity wall. It is understood that each sub-cavity 111 has a valve on its cavity wall.

[0105] When using the switching device, insulating gas can be introduced into the sub-cavity 111 through the valve, and the valve can be closed after sufficient insulating gas has been introduced. At the same time, a valve is provided on the cavity wall of each sub-cavity 111, which can independently control the gas pressure of the insulating gas in each sub-cavity 111.

[0106] Thus, by setting valves, the entry and exit of insulating gas into the sub-cavity 111 can be better controlled. When the switching device 100 needs to introduce insulating gas, by opening the valves, the external insulating gas can enter the sub-cavity 111 more smoothly, so that the insulating gas reaches the appropriate gas pressure and gas content, thereby improving the insulation of the device.

[0107] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0108] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A switching device, characterized by The switch device comprises: a housing having a plurality of sub-cavities independent of each other for accommodating insulation gas; and a plurality of electrical connection assemblies arranged in one-to-one correspondence in all the sub-cavities; wherein the electrical connection assembly comprises: an electrical connector having an accommodation cavity and an opening communicating with the accommodation cavity, the accommodation cavity being in communication with the corresponding sub-cavity through the opening; the electrical connector has a plurality of connection terminals arranged on the cavity wall of the corresponding sub-cavity, and all the electrical connectors are electrically connected through the corresponding connection terminals; a partition arranged in the accommodation cavity and separating the accommodation cavity into a first cavity and a second cavity; the opening is arranged on the cavity wall of the first cavity, and a plurality of first through holes are arranged on the partition, and the first cavity and the second cavity are in communication through the plurality of first through holes; and a moisture absorption assembly arranged in the second cavity.

2. The switching device of claim 1, wherein The moisture absorption assembly comprises a plurality of adsorption units configured in a spherical shape.

3. The switching device of claim 2, wherein The adsorption units are configured as molecular sieves; and / or The diameter of the adsorption units is 1mm to 6mm.

4. The switching device of claim 2, wherein The moisture absorption assembly further comprises a packaging member having a receiving cavity and a plurality of second through holes communicating with the receiving cavity, and the adsorption units are arranged in the receiving cavity.

5. The switching device of claim 4, wherein The material of the packaging member is non-woven fabric.

6. The switching device according to any one of claims 1 to 5, characterized in that The partition and the cavity wall of the accommodation cavity are detachably connected.

7. The switching device of claim 6, wherein The electrical connector comprises a stepped portion arranged on the cavity wall of the accommodation cavity; The partition abuts against the stepped portion and is detachably connected with the stepped portion.

8. The switching device according to any one of claims 1 to 5, characterized in that The housing comprises: a housing body having a cavity; and a plurality of insulation members arranged in the cavity and separating the cavity into a plurality of sub-cavities independent of each other; wherein the connection terminals are arranged on the corresponding insulation members.

9. The switching device of claim 8, wherein, The housing body comprises a plurality of sub-bodies; two adjacent sub-bodies are detachably connected, and one insulation member is arranged at the connection of the two adjacent sub-bodies, and the sub-body and the insulation member connected with the sub-body jointly define the sub-cavity.

10. The switching device according to any one of claims 1 to 5, characterized in that The switch device further comprises a plurality of valve members, and each sub-cavity has a valve member arranged on the cavity wall.

Images