Gas-insulated switchgear

Abstract

The utility model belongs to the technical field of electrical equipment, and discloses an inflatable cabinet. The inflatable cabinet comprises a first tank body and at least one second tank body, wherein the first tank body is connected with the adjacent second tank body through a first auxiliary flange plate; the first tank body is provided with a wire inlet sleeve, and the first isolating switch is connected with the wire inlet sleeve and the circuit breaker respectively; and a second isolating switch is arranged in the second tank body, a wire outlet sleeve is arranged on the second tank body, and the second isolating switch is respectively connected with the wire outlet sleeve and the circuit breaker. The first tank body and the second tank body are connected and combined through the first auxiliary flange plate, the wire inlet sleeve of the first tank body forms the input end, the wire outlet sleeve of the second tank body forms the output end, and if another second tank body is additionally arranged, the wire outlet sleeve of the additionally arranged second tank body also forms the output end, so that the combined expansion can be realized to meet the power supply requirement; and the sizes of the first tank body and the second tank body can be effectively controlled, and the structural compactness is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to electrical equipment technical field especially relates to a gas-filled switchgear. BACKGROUND

[0002] The gas-filled switchgear is a kind of equipment, high-voltage components are installed in a sealed box, and the inside is filled with gas slightly higher than atmospheric pressure as insulating medium.The components of gas-filled switchgear are sealed in the sealed box, are not influenced by outside environment, so it is suitable for the application scene of offshore wind power.

[0003] In prior art, the gas-filled switchgear of offshore wind power needs to be sent from the tower door of wind power tower and installed in the wind power tower, but the gas-filled switchgear is large in size, while meeting the power supply demand, it is difficult to adapt to the size of the tower door of wind power tower.

[0004] Therefore, it is urgent to provide a gas-filled switchgear, which controls the volume of the gas-filled switchgear while meeting the power supply demand, thereby improving the compactness of the structure to meet the application requirements of offshore wind power. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a gas-filled switchgear, which controls the volume of the gas-filled switchgear while meeting the power supply demand, thereby improving the compactness of the structure to meet the application requirements of offshore wind power.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a gas-filled switchgear, which comprises a first tank body and at least one second tank body, the first tank body is connected with adjacent second tank body through first vice flange plate;

[0008] The first tank body is equipped with circuit breaker and first disconnecting switch, the side surface of first tank body is equipped with incoming line bushing, and the first disconnecting switch is connected with incoming line bushing and circuit breaker respectively;

[0009] The second tank body is equipped with at least one second disconnecting switch, and the side surface of second tank body is equipped with outgoing line bushing, and the second disconnecting switch is connected with outgoing line bushing and circuit breaker respectively.

[0010] As an optional technical scheme of the gas-filled switchgear, the gas-filled switchgear comprises a plurality of second tank bodies, and adjacent two second tank bodies are connected through second vice flange plate.

[0011] As an optional technical scheme of the gas-filled cabinet, the first tank body and the second tank body are provided with first pipe structures at opposite regions, the second tank body and the second tank body adjacent to each other are provided with second pipe structures at opposite regions, the first auxiliary flange plate connects the first pipe structure and the second pipe structure, and the second auxiliary flange plate connects the second pipe structures of two adjacent second tank bodies.

[0012] As an optional technical scheme of the gas-filled cabinet, the first tank body is further provided with a first insulation support, and the first disconnector is arranged in the first insulation support.

[0013] And / or, the second tank body is further provided with a second insulation support, and the second disconnector is arranged in the second insulation support.

[0014] As an optional technical scheme of the gas-filled cabinet, the first insulation support is provided with a receiving groove, an opening of the receiving groove faces the top end of the first insulation support, and the first disconnector is arranged in the receiving groove, and the highest part of the first disconnector in the receiving groove is lower than the face where the opening is located.

[0015] As an optional technical scheme of the gas-filled cabinet, the first insulation support is embedded with a first embedded part, one end of the first embedded part is electrically connected with the circuit breaker, and the other end of the first embedded part is electrically connected with the closing contact of the first disconnector.

[0016] As an optional technical scheme of the gas-filled cabinet, the first insulation support is further embedded with a second embedded part, and the intermediate static contact of the first disconnector is electrically connected with the incoming line sleeve through the second embedded part.

[0017] As an optional technical scheme of the gas-filled cabinet, the first disconnector is electrically connected with the circuit breaker through a first tubular bus, and the second disconnector is electrically connected with the circuit breaker through a second tubular bus.

[0018] The utility model further provides a gas-filled cabinet, the gas-filled cabinet includes third tank body, be provided with circuit breaker, first disconnector and at least two second disconnectors in the third tank body, be equipped with incoming line sleeve and outgoing line sleeve on the side surface of third tank body, first disconnector is connected with incoming line sleeve and circuit breaker respectively, at least two second disconnectors are arranged as m rows, two second disconnectors of same row are connected through common closing contact, and m is integer greater than or equal to 1.

[0019] The utility model discloses still provide a kind of inflatable cabinet, which comprises fourth tank body, and the side of fourth tank body is equipped with incoming line sleeve pipe and outgoing line sleeve pipe, circuit breaker, first disconnecting switch and second disconnecting switch are equipped in fourth tank body, first disconnecting switch is connected with the incoming line sleeve pipe, and second disconnecting switch is connected with the outgoing line sleeve pipe.

[0020] The circuit breaker includes three phase columns, and the first disconnecting switch and the second disconnecting switch are connected with the three phase columns, and the three phase columns are arranged in a triangular shape.

[0021] Beneficial effects:

[0022] The utility model provides a kind of inflatable cabinet, which comprises first tank body and at least one second tank body, and first tank body is connected with adjacent second tank body by first vice flange plate;Circuit breaker and first disconnecting switch are equipped in first tank body, and the side of first tank body is equipped with incoming line sleeve pipe, and first disconnecting switch is connected with incoming line sleeve pipe and circuit breaker respectively;At least one second disconnecting switch is equipped in second tank body, and the side of second tank body is equipped with outgoing line sleeve pipe, and second disconnecting switch is connected with outgoing line sleeve pipe and circuit breaker respectively.By being connected with first vice flange plate, when one first tank body and one second tank body are combined, input end is formed according to the incoming line sleeve pipe of first tank body, and output end is formed according to the outgoing line sleeve pipe of second tank body, if one more second tank body is added, the outgoing line sleeve pipe of the added second tank body also forms output end, and the combination of tank body realizes "one-in one-out" or "one-in two-out" and "one-in multi-out" configuration, which can not only be combined and expanded to meet power supply demand, but also effectively control the volume of first tank body and second tank body, improve structural compactness, so that first tank body and second tank body can be sent into the tower door of wind power generation tower and assembled inside the wind power generation tower.

[0023] The utility model discloses still provide a kind of inflatable cabinet, which comprises third tank body, and circuit breaker, first disconnecting switch and at least two second disconnecting switches are equipped in third tank body, incoming line sleeve pipe and outgoing line sleeve pipe are equipped on the side of third tank body, first disconnecting switch is connected with incoming line sleeve pipe and circuit breaker respectively, second disconnecting switch is connected with outgoing line sleeve pipe and circuit breaker respectively, and at least two second disconnecting switches are arranged as m rows, and the two second disconnecting switches of same row are connected by common closing contact, and m is integer greater than or equal to 1.In the same tank body, second disconnecting switch is arranged to form output end, by connecting the two second disconnecting switches of same row by common closing contact, space can be saved, and then the volume of third tank body is reduced and structural compactness is improved, so that third tank body can be sent into the tower door of wind power generation tower, to meet the application demand of offshore wind power.

[0024] The utility model also provides a kind of inflatable cabinet, the inflatable cabinet includes fourth jar body, and the side of fourth jar body is equipped with incoming line sleeve pipe and outgoing line sleeve pipe, and fourth jar body is equipped with circuit breaker, first disconnecting switch connected to incoming line sleeve pipe and second disconnecting switch connected to outgoing line sleeve pipe;Circuit breaker includes three phase columns, and first disconnecting switch and second disconnecting switch are connected with three phase columns, and three phase columns are distributed in triangle shape.The three phase columns of circuit breaker are arranged in triangle shape, which can reduce the size of circuit breaker, thereby reducing the volume of fourth jar body and improving the compactness of structure, so that fourth jar body can be sent into from the tower door of wind power tower, to meet the application demand of offshore wind power. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structural schematic diagram of inflatable cabinet provided by the utility model embodiment one;

[0026] Figure 2 It is the side view of inflatable cabinet provided by the utility model embodiment one;

[0027] Figure 3 It is the end face view of inflatable cabinet provided by the utility model embodiment one;

[0028] Figure 4 It is the sectional view of inflatable cabinet and first disconnecting switch provided by the utility model embodiment one;

[0029] Figure 5 It is the structural schematic diagram of insulating support provided by the utility model embodiment one;

[0030] Figure 6 It is the partial structure schematic diagram of inflatable cabinet provided by the utility model embodiment two;

[0031] Figure 7 It is the partial structure schematic diagram of inflatable cabinet provided by the utility model embodiment two;

[0032] Figure 8 It is the partial structure schematic diagram of inflatable cabinet provided by the utility model embodiment three;

[0033] Figure 9 It is the plan view of inflatable cabinet provided by the utility model embodiment three.

[0034] In the figure:

[0035] 10, first jar body;1a, first pipe structure;11, incoming line sleeve pipe;12, circuit breaker;121, phase column;13, first disconnecting switch;131, grounding contact;132, screw rod;133, intermediate static contact;134, moving contact;135, equalizing ring;136, closing contact;

[0036] 20, second tank body; 2a, second tube structure; 21, outgoing line sleeve; 22, second disconnector;

[0037] 31, first tubular busbar; 32, second tubular busbar;

[0038] 40a, first insulation support; 40b, second insulation support; 41, first insert; 42, second insert; 43, heat dissipation opening;

[0039] 50, third tank body; 60, fourth tank body. DETAILED DESCRIPTION

[0040] The utility model will be described in further detail below in combination with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely used to explain the utility model and are not a limitation on the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for ease of description, not all the structures.

[0041] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0042] In the utility model, unless otherwise explicitly specified and limited, the "upper" or "lower" of the first feature to the second feature can include that the first and second features are in direct contact, or the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the "upper", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The "below", "below" and "below" of the first feature to the second feature include that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0043] In the description of the embodiment, the terms "upper", "lower", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification of operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0044] Example 1

[0045] like Figures 1 to 5 As shown, this embodiment provides a charging cabinet, which includes a first tank 10 and at least one second tank 20. The first tank 10 and the adjacent second tank 20 are connected by a first flange. The first tank 10 is provided with a circuit breaker 12 and a first disconnecting switch 13. The side of the first tank 10 is provided with an inlet bushing 11. The first disconnecting switch 13 is connected to the inlet bushing 11 and the circuit breaker 12 respectively. The second tank 20 is provided with at least one second disconnecting switch 22. The side of the second tank 20 is provided with an outlet bushing 21. The second disconnecting switch 22 is connected to the outlet bushing 21 and the circuit breaker 12 respectively.

[0046] By setting up a first tank 10 and a second tank 20 connected and combined through a first flange, when a first tank 10 and a second tank 20 are combined, the input end is formed by the inlet sleeve 11 of the first tank 10, and the output end is formed by the outlet sleeve 21 of the second tank 20. If another second tank 20 is added, the outlet sleeve 21 of the added second tank 20 also forms an output end. According to the tank combination, the configuration of "one inlet and one outlet", "one inlet and two outlets" or "one inlet and multiple outlets" can be realized. It can be combined and expanded to meet the power supply demand, and the volume of the first tank 10 and the second tank 20 can be effectively controlled to improve the structural compactness. This allows the first tank 10 and the second tank 20 to be sent in from the tower gate of the wind turbine tower and assembled inside the wind turbine tower.

[0047] The gas-insulated switchgear supports "one-in-one-out" or "one-in-multiple-out" configurations. Here, "in" refers to drawing power from the power grid, and "out" refers to distributing electrical energy. The "one-in-one-out" configuration typically has only one input and one output, suitable for simple power system configurations. The "one-in-multiple-out" configuration is suitable for scenarios with distributed power or where multiple devices need to be supplied simultaneously. By setting up a modular first tank 10 and a second tank 20, the size of each tank is kept small, and they can be combined according to actual needs to achieve either "one-in-one-out" or "one-in-multiple-out" configurations, suitable for various application scenarios.

[0048] In this embodiment, taking only one second tank 20 as an example, the circuit breaker 12 is a three-phase circuit breaker, the first tank 10 is provided with a first disconnecting switch 13, and the second tank 20 is provided with two second disconnecting switches 22; the power is connected from the incoming bushing 11, and passes through a first disconnecting switch 13, the circuit breaker 12 and a second disconnecting switch 22 in sequence, and outputs power from the outgoing bushing 21.

[0049] In the embodiment, the first tank body 10 and the second tank body 20 are integrally cast by cast aluminum alloy material; the first tank body 10 and the second tank body 20 are designed to have uniform sizes. By setting the cast aluminum alloy material, welding deformation can be avoided, and high-pressure gas can be better resisted; by setting the first tank body 10 and the second tank body 20 to have uniform sizes, a set of molds can be used for manufacturing, which is more economical.

[0050] Optionally, the gas-filled cabinet includes a plurality of second tank bodies 20, and two adjacent second tank bodies 20 are connected through a second flange plate; the first tank body 10 is provided with a first pipe structure 1a at a region opposite to the second tank body 20, the second tank body 20 is provided with a second pipe structure 2a at a region opposite to the first tank body 10, and the second tank body 20 is provided with a second pipe structure 2a at a region opposite to an adjacent second tank body 20; a first flange plate connects the first pipe structure 1a and the second pipe structure 2a, and a second flange plate connects the second pipe structures 2a of the two adjacent second tank bodies 20. By setting a plurality of second tank bodies 20, a "one-in and multiple-out" configuration can be achieved by combination, which is suitable for different application scenarios; by setting corresponding pipe structures on the first tank body 10 and the second tank body 20, and setting flange plates on the pipe structures to connect adjacent tank bodies.

[0051] Specifically, each flange plate includes two flanges, and the connection by one flange plate means that the pipe structures of the two tank bodies are fixed on one flange plate, the two tank bodies are butted, a sealing element is added between the two flanges at the butt joint, and finally the connection is completed by bolt fixation. The two tank bodies connected by one flange plate are easy to disassemble, have high strength, and have good sealing performance.

[0052] In the embodiment, the voltage level of the gas-filled cabinet is 72.5KV; taking the case of setting only one second tank body 20 as an example, the first tank body 10 is provided with a first pipe structure 1a at the bottom, the second tank body 20 is provided with a second pipe structure 2a at the top, and the two flanges of the first flange plate are fixed on the first pipe structure 1a and the second pipe structure 2a, respectively, and are sealingly connected; the first tank body 10 and the second tank body 20 are connected through the first pipe structure 1a and the second pipe structure 2a, and the first tank body 10 and the second tank body 20 are both filled with environmentally friendly gas.

[0053] It can be understood that if two second tank bodies 20 are set, only the corresponding second pipe structures 2a are set on the second tank bodies 20, the first second tank body 20 is arranged at the bottom of the first tank body 10, and the other second tank body 20 is arranged at the bottom of the first second tank body 20.

[0054] In the embodiment, the first tank body 10 and the second tank body 20 are internally communicated and jointly constitute a closed space, and the closed space is filled with environmental protection gas as an insulation medium. The first tank body 10 and the second tank body 20 are communicated in up and down at the first flange, and the line connecting the circuit breaker 12 and the second disconnector 22 can pass through the first flange. The circuit breaker 12 can be an environmental protection type circuit breaker, and the insulation medium can be selected from sulfur hexafluoride gas or mixed gas of nitrogen and sulfur hexafluoride.

[0055] In other embodiments, a sealing connector can also be arranged at the abutting position of the first tank body 10 and the second tank body 20, the connecting line can pass through the sealing connector, and the sealing connector can separate the internal space of the first tank body 10 and the second tank body 20, so as to ensure that the internal space of the first tank body 10 and the second tank body 20 is separately closed, and the gas is separately filled in the first tank body 10 and the second tank body 20 as an insulation medium.

[0056] Optionally, the two sides of the first tank body 10 and the two sides of the second tank body 20 are respectively provided with detachable side flanges, and the parts are installed on the first tank body 10 or the second tank body 20 through the side flanges. By arranging the side flanges, the parts can be installed, and different side flanges can be replaced to correspondingly install different parts on the tank body. The combination of the tank body and the corresponding parts can be realized according to actual needs, and the side flanges can be detached to facilitate the maintenance and replacement of the related parts.

[0057] In the embodiment, the side flange of the first tank body 10 is provided with an incoming line sleeve 11, and the side flange of the second tank body 20 is provided with an outgoing line sleeve 21.

[0058] Optionally, the first disconnector 13 is electrically connected with the circuit breaker 12 through a first tubular bus 31, and the second disconnector 22 is electrically connected with the circuit breaker 12 through a second tubular bus 32. By arranging the first tubular bus 31 and the second tubular bus 32, the electric field can be optimized, the insulation performance can be improved, and the gas-filled cabinet is more reliable.

[0059] The tubular bus refers to a bus product made of copper pipe or aluminum alloy pipe as a conductor and coated with an insulating material. In the embodiment, the incoming line sleeve 11 also connects the incoming line side of the first disconnector 13 through the tubular bus, and the outgoing line sleeve 21 also connects the outgoing line side of the second disconnector 22 through the tubular bus.

[0060] Further, the first tank body 10 is provided with a first insulation support 40a, and the first disconnector 13 is placed in the first insulation support 40a. By arranging the first insulation support 40a and placing the first disconnector 13 in the first insulation support 40a, the first insulation support 40a can shield and shield the first disconnector 13, effectively improving the phase-to-phase and phase-to-ground withstand voltage level of the first disconnector 13.

[0061] In the embodiment, the second tank body 20 is provided with a second insulation support 40b, and the second disconnecting switch 22 is placed in the second insulation support 40b; the first insulation support 40a is provided in one-to-one correspondence with each first disconnecting switch 13, and the second insulation support 40b is provided in one-to-one correspondence with each second disconnecting switch 22; the first disconnecting switch 13 and the second disconnecting switch 22 are both screw rod transmission three-position switches and have the same structure, and the first insulation support 40a and the second insulation support 40b also have the same structure.

[0062] Referring to Figure 4 Taking the internal structure of the first disconnecting switch 13 and the first insulation support 40a as an example, the first disconnecting switch 13 specifically includes a grounding contact 131, a screw rod 132, an intermediate static contact 133, a moving contact 134, a voltage equalizing ring 135, and a closing contact 136, and specifically, the moving contact 134 is driven to move by the screw rod 132 to realize three working positions: a closing position, an isolation position, and a grounding position; when the moving contact 134 can move to contact the grounding contact 131, the moving contact 134 is in the grounding position; when the moving contact 134 can move to contact the closing contact 136, the moving contact 134 is in the closing position; and when the moving contact 134 is located between the grounding contact 131 and the closing contact 136, the moving contact 134 contacts the intermediate static contact 133, and the moving contact 134 is in the isolation position; this switch design combines the functions of a disconnecting switch and a grounding switch; in the closing position, the main break is connected to realize the connection of the circuit; in the isolation position, the main break is separated to realize the isolation of the circuit; and in the grounding position, the circuit is safely grounded through the grounding device on the grounding side.

[0063] Optionally, the first insulation support 40a is embedded with a first embedded part 41, one end of the first embedded part 41 is electrically connected with the circuit breaker 12, and the other end of the first embedded part 41 is electrically connected with the closing contact 136 of the circuit breaker 12; the first insulation support 40a is also embedded with a second embedded part 42, and the intermediate static contact 133 of the first disconnecting switch 13 is electrically connected with the incoming line bushing 11 through the second embedded part 42.

[0064] Similarly, the first embedded part 41 is also embedded on the second insulation support 40b located in the second tank body 20, and in the second insulation support 40b, one end of the first embedded part 41 is electrically connected with the circuit breaker 12, and the other end of the first embedded part 41 is electrically connected with the closing contact of the second disconnecting switch 22; the second insulation support 40b located in the second tank body 20 is also embedded with the second embedded part 42, and the intermediate static contact of the second disconnecting switch 22 is electrically connected with the outgoing line bushing 21 through the second embedded part 42.

[0065] In the embodiment, the first embedded part 41 is arranged at the tail of the first insulation support 40a, and the second embedded part 42 is arranged at the bottom of the first insulation support 40a. The closing contact 136 is fixed on the first embedded part 41 at the tail of the first insulation support 40a, and the closing contact 136 is electrically connected with the circuit breaker 12 through the first embedded part 41. The moving contact 134 is threadedly connected with the screw rod 132, and the screw rod 132 drives the moving contact 134 to move. When the moving contact 134 is in communication with the closing contact 136, the moving contact 134 is in communication with the circuit breaker 12 through the closing contact 136 and the first embedded part 41. The intermediate static contact 133 is fixed on the bottom of the first insulation support 40a through the second embedded part 42, and the intermediate static contact 133 is electrically connected with the incoming line sleeve 11 through the second embedded part 42.

[0066] Optionally, the first insulation support 40a is provided with a receiving groove, and an opening of the receiving groove is directed to the top end of the first insulation support 40a. The first disconnecting switch 13 is arranged in the receiving groove, and the highest position of the first disconnecting switch 13 in the receiving groove is lower than the face where the opening is located. By arranging the highest position of the first disconnecting switch 13 to be lower than the face where the opening of the first insulation support 40a is located, the first insulation support 40a can shield and block the elements with conductive performance in the first insulation support 40a, so as to improve the phase-to-phase and phase-to-ground withstand voltage level of the disconnecting switch.

[0067] In the embodiment, the first insulation support 40a and the second insulation support 40b are both of epoxy pouring structure, and the first embedded part 41 and the second embedded part 42 both have the ability to conduct current. The epoxy pouring structure has high structural precision, which can better ensure the coaxiality of the closing contact 136, the intermediate static contact 133 and the grounding contact 131, and ensure the effective contact between the moving contact 134 and the grounding contact 131 and the closing contact 136, so as to ensure reliable electrical connection.

[0068] Optionally, the bottom of the first insulation support 40a is provided with a heat dissipation opening 43 for heat dissipation. In the embodiment, the heat dissipation opening 43 is square. The heat dissipation opening 43 is located at a certain distance from the position where the second embedded part 42 is arranged. By reasonably designing the position of the heat dissipation opening 43, the conductor in the first insulation support 40a can be prevented from being exposed to discharge the shell below the first insulation support 40a. Similarly, the bottom of the second insulation support 40b is also provided with a heat dissipation opening 43.

[0069] Embodiment two

[0070] As Figure 6As shown, different from the first embodiment, the air- filled cabinet provided by the present embodiment comprises a third tank body 50, the third tank body 50 is internally provided with a circuit breaker 12, a first disconnecting switch 13 and at least two second disconnecting switches 22, the third tank body 50 is externally provided with an incoming line bushing 11 and an outgoing line bushing 21, the first disconnecting switch 13 is connected with the incoming line bushing 11 and the circuit breaker 12 respectively, the second disconnecting switch 22 is connected with the outgoing line bushing 21 and the circuit breaker 12 respectively, and the at least two second disconnecting switches 22 are arranged in m rows, two second disconnecting switches 22 in the same row are connected through a shared closing contact, and m is an integer greater than or equal to 1.

[0071] The third tank body 50 is a one-piece tank body, the second disconnecting switch 22 is arranged in the third tank body 50 to form an output end, and the distance between the two second disconnecting switches 22 can be shortened and the space can be saved by connecting the two second disconnecting switches 22 in the same row through the shared closing contact, thereby reducing the volume of the third tank body 50, so that the third tank body 50 can be sent into the tower door of the wind power tower, meeting the application requirements of offshore wind power, and making the internal arrangement of the air- filled cabinet more compact and minimizing the size of the air- filled cabinet. Optionally, the circuit breaker 12 is an SF6 circuit breaker. The structure of the shared closing contact and the specific connection mode can be set according to the prior art.

[0072] When two second disconnecting switches 22 are arranged, the two second disconnecting switches 22 are arranged in one row and connected through the shared closing contact; when three second disconnecting switches 22 are arranged, the three second disconnecting switches 22 are arranged in two rows, the first row has two second disconnecting switches 22 connected through the shared closing contact, and the second row has one second disconnecting switch 22; and when four second disconnecting switches 22 are arranged, the four second disconnecting switches 22 are arranged in two rows, the first row has two second disconnecting switches 22 connected through the shared closing contact, and the second row also has two second disconnecting switches 22 connected through the shared closing contact.

[0073] In order to form the "one-in and multiple-out" configuration, the air- filled cabinet further comprises an additional tank body, the additional tank body and the third tank body 50 are connected through a third auxiliary flange, the additional tank body is internally provided with at least one third disconnecting switch and externally provided with an additional outgoing line bushing, and the third disconnecting switch is connected with the circuit breaker 12 and the additional outgoing line bushing respectively. By additionally arranging the combined additional tank body on the third tank body 50 and arranging the third disconnecting switch in the additional tank body to form an output end, the "one-in and multiple-out" configuration is formed.

[0074] As shown, Figure 7As shown, optionally, in the third tank body 50, the circuit breaker 12 is electrically connected with the two second disconnectors 22 through two connecting plates respectively, and the ends of the two second disconnectors 22 are spaced apart. It can be understood that the selection of different types of circuit breakers and the number of disconnectors arranged in one tank body will affect the volume and size of the tank body, and the specific layout in the tank body can be adaptively adjusted according to actual conditions.

[0075] Embodiment three

[0076] As shown in Figure 8 and Figure 9 The air-filled cabinet provided by the embodiment includes a fourth tank body 60, the fourth tank body 60 is provided with an incoming line sleeve 11 and an outgoing line sleeve 21 on the side surface, and the fourth tank body 60 is provided with a circuit breaker 12, a first disconnector 13 connected to the incoming line sleeve 11, and a second disconnector 22 connected to the outgoing line sleeve 21; the circuit breaker 12 includes three phase columns 121, the first disconnector 13 and the second disconnector 22 are connected with the three phase columns 121, and the three phase columns 121 are distributed in a triangular shape.

[0077] The circuit breaker 12 in the embodiment two is a three-phase circuit breaker and an SF6 circuit breaker, and the circuit breaker 12 includes three phase columns 121 for respectively corresponding to three-phase currents in a three-phase power supply, and the three phase columns 121 are arranged in a straight line; different from the embodiment two, in the embodiment, the three phase columns 121 of the circuit breaker 12 are arranged in a triangular shape. By changing the arrangement form of the three phase columns 121 of the circuit breaker 12, the size of the circuit breaker 12 can be reduced, and then the volume of the fourth tank body 60 is reduced, so that the fourth tank body 60 can be sent into the tower door of the wind power tower, and the application requirement of offshore wind power is met; and the air-filled cabinet in the embodiment can also add additional tank bodies on the basis of the fourth tank body 60 according to actual conditions.

[0078] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not the limitation of the embodiments of the utility model. For ordinary skilled in the art, various obvious changes, re-adjustment and replacement can be made without departing from the protection scope of the utility model. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the utility model should be included in the protection scope of the utility model claim.

Claims

1. An air receiver tank characterized by, The first tank body (10) and at least one second tank body (20) are connected by a first flange plate; The first tank body (10) is provided with a circuit breaker (12) and a first disconnector (13), and the side of the first tank body (10) is provided with an incoming line bushing (11), and the first disconnector (13) is connected with the incoming line bushing (11) and the circuit breaker (12) respectively; The second tank body (20) is provided with at least one second disconnector (22), and the side of the second tank body (20) is provided with an outgoing line bushing (21), and the second disconnector (22) is connected with the outgoing line bushing (21) and the circuit breaker (12) respectively.

2. The gas-insulated switchgear according to claim 1, characterized in that The gas-filled cabinet comprises a plurality of second tank bodies (20), and two adjacent second tank bodies (20) are connected by a second flange plate.

3. The gas-insulated cabinet according to claim 2, characterized in that The opposite area of the first tank body (10) and the second tank body (20) is provided with a first pipe structure (1a), the opposite area of the second tank body (20) and the first tank body (10) and the opposite area of two adjacent second tank bodies (20) are provided with a second pipe structure (2a), the first flange plate connects the first pipe structure (1a) and the second pipe structure (2a), and the second flange plate connects the second pipe structures (2a) of two adjacent second tank bodies (20).

4. The gas-insulated cabinet according to claim 1, characterized in that The first tank body (10) is further provided with a first insulation support (40a), and the first disconnector (13) is placed in the first insulation support (40a); And / or, the second tank body (20) is further provided with a second insulation support (40b), and the second disconnector (22) is placed in the second insulation support (40b).

5. The gas-insulated cabinet according to claim 4, characterized in that The first insulation support (40a) is provided with a receiving groove, and the opening of the receiving groove faces the top end of the first insulation support (40a), the first disconnector (13) is arranged in the receiving groove, and the highest part of the first disconnector (13) in the receiving groove is lower than the face where the opening is located.

6. The gas-insulated cabinet according to claim 4, characterized in that The first insulation support (40a) is embedded with a first embedded part (41), one end of the first embedded part (41) is electrically connected with the circuit breaker (12), and the other end of the first embedded part (41) is electrically connected with the closing contact (136) of the first disconnector (13).

7. The gas-insulated cabinet according to claim 4, characterized in that The first insulation support (40a) is further embedded with a second embedded part (42), and the intermediate static contact (133) of the first disconnector (13) is electrically connected with the incoming line bushing (11) through the second embedded part (42).

8. The gas-insulated cabinet according to any of claims 1 to 7, characterized in that The first disconnector (13) is electrically connected with the circuit breaker (12) through a first tubular bus (31), and the second disconnector (22) is electrically connected with the circuit breaker (12) through a second tubular bus (32).

9. An air receiver tank characterized by The third tank (50) is provided with a circuit breaker (12), a first disconnecting switch (13) and at least two second disconnecting switches (22) inside, and is provided with an incoming line bushing (11) and an outgoing line bushing (21) on the side surface, the first disconnecting switch (13) is connected with the incoming line bushing (11) and the circuit breaker (12) respectively, the second disconnecting switch (22) is connected with the outgoing line bushing (21) and the circuit breaker (12) respectively, and the at least two second disconnecting switches (22) are arranged in m rows, two second disconnecting switches (22) in the same row are connected through a common closing contact, and m is an integer greater than or equal to 1.

10. An air receiver tank characterized by The fourth tank (60) is provided with an incoming line bushing (11) and an outgoing line bushing (21) on the side surface, and is provided with a circuit breaker (12), a first disconnecting switch (13) and a second disconnecting switch (22) inside, the first disconnecting switch (13) is connected with the incoming line bushing (11), and the second disconnecting switch (22) is connected with the outgoing line bushing (21); The circuit breaker (12) comprises three phase columns (121), the first disconnecting switch (13) and the second disconnecting switch (22) are connected with the three phase columns (121), and the three phase columns (121) are arranged in a triangular shape.

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