CN209946209U

CN209946209U - Adaptor, GIS equipment test connector and GIS equipment

Info

Publication number: CN209946209U
Application number: CN201920238345.9U
Authority: CN
Inventors: 向宇
Original assignee: Shenzhen Power Supply Bureau Co Ltd
Current assignee: Shenzhen Power Supply Bureau Co Ltd
Priority date: 2019-02-25
Filing date: 2019-02-25
Publication date: 2020-01-14
Anticipated expiration: 2029-02-25

Abstract

The utility model relates to a test connector and GIS equipment of adaptor, GIS equipment. An adapter having a third surface for mating connection with a terminal flange, a fourth surface for mating connection with a first surface of a main body of a test fitting, and a passage for gas flow extending from the third surface to the fourth surface; the third surface of the adapter is provided with a first sealing groove; the first sealing groove is matched with a sealing ring arranged on a terminal flange of the GIS device. Above-mentioned adaptor can make test connector's main part fixed relative to the terminal flange. And then the problem of sealing failure caused by the inclination of the test joint relative to the terminal flange is avoided, so that the risk of sulfur hexafluoride gas leakage is avoided.

Description

Adaptor, GIS equipment test connector and GIS equipment

Technical Field

The utility model relates to a GIS field especially relates to a test connector and GIS equipment of adaptor, GIS equipment.

Background

The statements herein merely provide background information related to the present application and may not necessarily constitute prior art.

Sulfur hexafluoride is widely used in electrical equipment due to its good insulating properties. Currently, the more substations that are going to be read, employ GIS (gas insulated switchgear) equipment. According to relevant regulations, the equipment needs to be tested for sulfur hexafluoride gas at regular intervals.

In order to simplify the operation process of the test, the test connector is connected with a terminal flange of the GIS device instead of a cover flange. Specifically, the test connector comprises a main body which can be fixedly connected with a terminal flange of the GIS device. The main body is provided with a first surface, a second surface and an inner cavity extending from the first surface to the second surface, and one end of the main body close to the second surface is provided with a connecting part used for being connected with the testing device. The test connector is fixedly arranged on a terminal flange of the GIS equipment, so that when gas test is carried out, the test device can be directly connected with the main body through the connecting part, and the complex screw disassembling process is avoided.

However, generally, on the GIS equipment, the sealing washer that sets up on the terminal flange protrudes the terminal flange's terminal surface setting, leads to the terminal flange's terminal surface unevenness to lead to the first surface of main part and the terminal flange's terminal surface unable laminating, and then lead to the main part unable fixed relative terminal flange. In the severe case, this may lead to failure of the seal due to the body tilting relative to the terminal flange, and thus to leakage of sulphur hexafluoride gas.

SUMMERY OF THE UTILITY MODEL

In view of this, there is a need for an adaptor that ensures that the body of the test connection is secured relative to the terminal flange.

The adaptor is fixedly arranged between a terminal flange of the GIS equipment and a main body of a test connector of the GIS equipment, and is provided with a third surface, a fourth surface and a channel, wherein the third surface is used for being attached to the terminal flange, the fourth surface is used for being attached to the first surface of the main body of the test connector, and the channel is used for allowing gas to flow and extends from the third surface to the fourth surface; a third surface of the adaptor is provided with a first sealing groove; the first sealing groove is matched with a sealing ring arranged on the terminal flange.

Above-mentioned adaptor, the sealing washer on the first seal groove of third surface and the terminal flange matches to make the terminal surface laminating of third surface and terminal flange, so the adaptor can be fixed relative to the terminal flange. And because the fourth surface of the adapter is attached to the first surface of the main body of the test connector, the main body of the test connector can be fixed relative to the adapter, so that the main body of the test connector is fixed relative to the terminal flange. And then the problem of sealing failure caused by the inclination of the test joint relative to the terminal flange is avoided, so that the risk of sulfur hexafluoride gas leakage is avoided.

In one embodiment, the first sealing groove is a circular hole.

In one embodiment, the first seal groove is an annular groove.

In one embodiment, the third surface and the fourth surface are two opposite parallel surfaces of the adapter.

In one embodiment, the channel extends in a direction from the third surface to the fourth surface.

In one embodiment, the fourth surface of the adaptor is provided with a second sealing groove.

In one embodiment, the adaptor is provided with a fixing hole for fixedly connecting with the terminal flange.

In one embodiment, the adaptor is a stainless steel adaptor.

The utility model also provides a test joint.

A test connection for a GIS device, comprising:

the main body can be fixedly connected with a terminal flange of GIS equipment, the main body is provided with a first surface, a second surface and an inner cavity extending from the first surface to the second surface, and one end of the main body close to the second surface is provided with a connecting part used for being connected with a testing device; and

the utility model provides an adaptor, the fourth surface of adaptor with the first surface laminating of main part is connected.

Above-mentioned GIS equipment's test connector, include the utility model provides an adaptor, the sealing washer on the first seal groove of third surface and the terminal flange matches to make the terminal surface laminating of third surface and terminal flange, so the adaptor can be fixed by relative terminal flange. And because the fourth surface of the adapter is attached to the first surface of the main body of the test connector, the main body of the test connector can be fixed relative to the adapter, so that the main body of the test connector is fixed relative to the terminal flange. And then the problem of sealing failure caused by the inclination of the test joint relative to the terminal flange is avoided, so that the risk of sulfur hexafluoride gas leakage is avoided.

The utility model also provides a GIS equipment.

The utility model provides a GIS equipment, includes the utility model provides a test connector.

Above-mentioned GIS equipment, include the utility model provides a test connector, the sealing washer on the first seal groove of third surface and the terminal flange matches to make the terminal surface laminating of third surface and terminal flange, so the adaptor can be fixed by the terminal flange relatively. And because the fourth surface of the adapter is attached to the first surface of the main body of the test connector, the main body of the test connector can be fixed relative to the adapter, so that the main body of the test connector is fixed relative to the terminal flange. And then the problem of sealing failure caused by the inclination of the test joint relative to the terminal flange is avoided, so that the risk of sulfur hexafluoride gas leakage is avoided.

Drawings

Fig. 1 is a cross-sectional view of an adaptor according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of an adaptor according to another embodiment of the present invention.

Fig. 3 is a cross-sectional view of a test connector of a GIS device according to an embodiment of the present invention.

Fig. 4 is an exploded schematic view of a test connector of a GIS device according to another embodiment of the present invention.

Fig. 5 is a cross-sectional view of a test connection of the GIS device of fig. 4.

Figure 6 is a cross-sectional view of the body of figure 4.

Fig. 7 is a cross-sectional view of the valve cartridge of fig. 4.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1, an embodiment of the present invention provides an adapter 20 for fixing between a terminal flange of a GIS device and a main body of a test connector of the GIS device. In particular, the adaptor 20 has a third surface 21 for the snug connection with the terminal flange, a fourth surface 23 for the snug connection with the first surface of the body of the test connection and a passage 25 for the passage of gas extending from the third surface 21 to the fourth surface 23. The third surface 21 of the adapter 20 has a first sealing groove 27, which first sealing groove 27 is adapted to a sealing ring provided on a terminal flange of the GIS device.

It can be understood that, the first sealing groove 27 is matched with the sealing ring disposed on the terminal flange, that is, the part of the sealing ring protruding out of the terminal flange is sunk into the first sealing groove 27, and the sealing ring is abutted against the bottom wall or the side wall of the sealing groove 27, so that the purpose of sealing and attaching the end surface of the terminal flange to the third surface 21 of the adaptor 20 can be achieved, and therefore, the leakage of sulfur hexafluoride can be prevented, and external water, oxygen or dust can be blocked.

Similarly, the fourth surface 23 is also a sealing surface against the first surface of the main body of the test connector, so as to prevent the leakage of sulfur hexafluoride from between the adaptor 20 and the main body, and to prevent the external water, oxygen, dust, etc. from invading between the adaptor 20 and the main body.

In addition, it will be appreciated that the passage 25 is required to communicate with the internal cavity of the body to enable the sulphur hexafluoride to flow through the passage 25 into the internal cavity of the body for testing.

In the adaptor 20, the first sealing groove 27 of the third surface 21 is matched with the sealing ring on the terminal flange, so that the third surface 21 is attached to the end surface of the terminal flange, and the adaptor 20 can be fixed relative to the terminal flange. And because the fourth surface 23 of the adaptor 20 is attached to the first surface of the main body of the test connector, the main body of the test connector can be fixed relative to the adaptor 20, so that the main body of the test connector is fixed relative to the terminal flange. And then the problem of sealing failure caused by the inclination of the test joint relative to the terminal flange is avoided, so that the risk of sulfur hexafluoride gas leakage is avoided.

In this embodiment, the fourth surface 23 is planar and may be mated to a body in which the first surface is also planar. In other embodiments, if the first surface of the body is non-planar, the fourth surface may be adapted to conform to the first surface to ensure that the body is fixed relative to the adapter.

In this embodiment, the first seal groove 27 is formed in a circular hole shape. Accordingly, the first seal groove 27 is provided in communication with the passage 25. It can be understood that the first sealing groove 27 is not limited to be circular, but may be a square hole or a circular hole, and the like, and can accommodate the protruding portion of the sealing ring on the terminal flange, and the sealing ring can be attached to the sidewall of the first sealing groove 27.

In this embodiment, the third surface 21 and the fourth surface 23 are two opposite parallel surfaces of the adaptor 20. The adaptor 20 has a simple structure, and the connecting portion of the main body of the test connector cannot rotate to other angles, and only translates compared with the case without the adaptor.

It is understood that in further embodiments, the third surface and the fourth surface may not be parallel. The orientation of the connecting part of the main body of the test joint can be changed according to the operation space around the position of the terminal flange of the GIS equipment and the reasonable relative position relationship between the third surface and the fourth surface, so that the test is facilitated.

Further, in the present embodiment, the channel 25 extends in a direction perpendicular to the third surface, that is, the channel 25 extends in a straight line, thereby facilitating the passage of the gas.

Of course, in other embodiments, the channel is not limited to extend along the direction from the third surface to the fourth surface, i.e., the channel may also extend along a curve or a zigzag, and the gas flowing out from the opening of the terminal flange can be delivered into the inner cavity of the main body of the test connection.

In this embodiment, the channel 25 is positioned such that the channel is coaxial with the inner cavity of the body of the test connection, thereby facilitating the flow of gas.

In this embodiment, the fourth surface 23 of the adaptor 20 is provided with a second sealing groove 29. Sealing of the fourth surface 23 of the adaptor 20 to the first surface of the body of the test fitting may thus be achieved by adding a sealing ring in the second sealing groove 29. It will be appreciated that the sealing of the fourth surface 23 of the adaptor 20 with the first surface of the body of the test fitting prevents gas leakage when gas in the passage 25 flows into the internal cavity of the body of the test fitting. Therefore, the second sealing groove 29 is disposed such that the sealing ring disposed in the second sealing groove 29 can ensure that the gas in the channel 25 flows into the inner cavity of the main body of the test connector and cannot leak to the outside.

Of course, in other embodiments, sealing of the fourth surface 23 of the adaptor 20 to the first surface of the body of the test fitting may also be achieved by providing other sealing materials within the second sealing groove 29.

Further, in other possible embodiments, the manner in which the sealing of the fourth surface of the adapter to the first surface of the body of the test sub is achieved is not limited thereto. For example, the fourth surface of the adapter and the first surface of the body of the test joint may be bonded together by using a sealant to achieve a sealing effect.

In this embodiment, the adaptor 20 is provided with a fixing hole 22 for fixedly connecting with the terminal flange. Specifically, in the present embodiment, the fixing hole 22 penetrates the third surface 21 and the fourth surface 23.

Specifically, the terminal flange is originally provided with a fixing hole for fixedly connecting with the sealing cover flange. In this embodiment, the fixing holes 22 are matched with the fixing holes on the terminal flange, so that the adaptor 20 can be fixedly connected with the terminal flange of the GIS device through screws.

It will of course be appreciated that in other embodiments the adaptor may be fixedly connected to the terminal flange in other ways.

In this embodiment, the adaptor 20 is a stainless steel adaptor. Namely, the adaptor 20 is made of stainless steel material, is not easy to be corroded by water and oxygen in the air, and has long service life. Of course, in other embodiments, the adapter 20 may be made of other materials, such as aluminum alloy.

As shown in fig. 2, another embodiment of the present invention provides an adapter 40, which is different from the adapter 20 in that the first sealing groove 47 on the third surface 41 is an annular groove.

In this embodiment, the first seal groove 47 is not in communication with the passage 45.

Optionally, the size of the first seal groove 47 is such that the sidewalls of the first seal groove 47 are attached to the seal ring on the terminal flange, thereby increasing the sealing performance between the third surface of the adaptor and the end surface of the terminal flange.

As shown in fig. 3, an embodiment of the present invention provides a test connector 100 for a GIS device, which includes a main body 110 capable of being fixedly connected to a terminal flange of the GIS device, and an adaptor 20.

Specifically, the body 110 has a first surface 111, a second surface 113, and an inner cavity 115 extending from the first surface 111 to the second surface 113. The body 110 includes an end portion adjacent to one side of the second surface 113, the end portion having a connection portion 117 for engaging with a testing device. The fourth surface 23 of the adaptor 20 is in abutting connection with the first surface 111 of the body 110.

It will be appreciated that in this embodiment the body 110 is fixedly connected to the terminal flange by means of the adapter piece 20.

The interior cavity 115 is adapted to allow the flow of sulfur hexafluoride therethrough. The specific configuration of the lumen 115 is shown in FIG. 1. It is understood that in other embodiments, the specific structure of the inner cavity 115 is not limited thereto, and may be any other regular or irregular structure, such that the end of the inner cavity 115 near the first surface is communicated with the end near the second surface.

In the above GIS equipment test connector, the first sealing groove 27 of the third surface 21 is matched with the sealing ring on the terminal flange, so that the third surface 21 is attached to the end surface of the terminal flange, and the adaptor 20 can be fixed relative to the terminal flange. And because the fourth surface 23 of the adaptor 20 is attached to the first surface of the main body of the test connector, the main body of the test connector can be fixed relative to the adaptor 20, so that the main body of the test connector is fixed relative to the terminal flange. And then the problem of sealing failure caused by the inclination of the test joint relative to the terminal flange is avoided, so that the risk of sulfur hexafluoride gas leakage is avoided.

It will be appreciated that the testing device interfaces with a side of the body 110 adjacent the second surface 113 so that the first surface 111 of the body 110 interfaces with the terminal flange.

The main body 110 is provided with a connecting portion 117 for connecting with a testing device. With test connector 100 fixed locate GIS equipment's terminal flange to when carrying out gas test, can directly be connected testing arrangement with main part 110 through connecting portion 117, avoided loaded down with trivial details screw dismantlement process, operation process is simple. Especially, when the high-altitude operation is carried out, the complicated screw disassembling process is avoided, and the operation difficulty of operators can be reduced.

Traditionally, in the screw disassembling process, screws are easy to drop or lose, and the operation efficiency is affected. And if the screw is dropped into another device, it may cause damage to the other device. In this embodiment, the main body need not be dismantled from the terminal flange, the process of screw dismantlement promptly to improve the operating efficiency. In addition, the phenomenon that the screw falls or is lost to other equipment can not be generated, so that the risk of damaging other equipment is effectively avoided.

In addition, the connection portion 117 is disposed, so that the testing device can be more quickly and stably connected to the test connector 100, and the testing process is more smooth.

Specifically, in the present embodiment, the connection portion 117 is a thread provided on an outer sidewall of the body 110. Accordingly, the test equipment is provided with a connector having an internal thread matching the thread, so that when the test equipment is butted with the test connector 100, the test end of the test equipment is directly inserted into the inner cavity 115 of the main body 110 and is screwed with the connecting part 117 on the main body 110 through the connector.

In this embodiment, the test connector 100 further includes a sealing cover 130 detachably disposed on the main body 110 via a connecting portion 117 to isolate an end of the inner cavity 115 near the second surface 113 from communicating with the outside. Namely, the sealing cover 130 plays a role of dust prevention and sealing, on one hand, external dust is prevented from entering the GIS equipment through the inner cavity 115; on the other hand, the sulfur hexafluoride gas can be prevented from leaking.

In addition, it will be appreciated that the seal cover 130 needs to be removed when testing is performed. After the test is completed, the sealing cover 130 is mounted on the main body 110, so that the sealing cover 130 and the test equipment can share the connection part 117, and the structure of the main body 110 is simpler.

Of course, in other embodiments, the sealing cover and the main body 110 may be directly connected, i.e. without adding other connecting members such as screws.

Further, in the present embodiment, a third sealing groove 131 is provided on a surface of the sealing cover 130 contacting the main body 110, and a sealing ring 133 is provided in the third sealing groove 131, so as to better ensure the sealing connection between the sealing cover 130 and the main body 110.

It is understood that in other embodiments, the manner of isolating the end of the inner cavity 115 proximate the second surface 113 from the outside is not limited thereto. For example, a sealing plug may be provided that plugs into an end of the interior 115 proximate the second surface 113.

In this embodiment, the first surface 111 and the second surface 113 are two opposite parallel surfaces of the main body 110, which on the one hand facilitates the gas circulation in the inner cavity 115; on the other hand, the structural design of the body 110 can be made relatively simple. Of course, in further embodiments, the first surface and the second surface may not be parallel.

In this embodiment, the main body 110 is provided with a fixing hole 119. The main body 110 is fixedly connected to the terminal flange by screws sequentially passing through the fixing holes 119, the fixing holes 22 and the fixing holes of the terminal flange. Of course, it is to be understood that in other embodiments, the manner in which the body is fixedly connected to the terminal flange is not limited thereto.

As shown in fig. 4 to 7, a test connector 300 for GIS equipment according to another embodiment of the present invention is different from the test connector 100 in that the test connector 300 further includes a valve core assembly 350, and the structure of the inner cavity 315 of the main body 310 is also different from that of the inner cavity 115.

Specifically, an end of the cavity 315 proximate to the first surface 311 is a first end 3151, and an end of the cavity 315 proximate to the second surface 131 is a second end 3153.

The valve cartridge assembly 350 includes a valve cartridge 351 movably disposed within the interior chamber 315 of the body 310. Valve spool 351 has a first state in which first end 3151 and second end 3153 of interior cavity 315 of body 310 are not in communication, and a second state in which first end 3151 and second end 3153 of interior cavity 315 of body 310 are in communication; the valve spool 351 is switchable between a first state and a second state.

It will be appreciated that in conducting a gas test, the valve spool 351 needs to be in the second state to allow gas to flow between the first end 3151 and the second end 3153. When no gas test is performed, the valve core 351 needs to be in the first state to prevent the sulfur hexafluoride gas from leaking.

Traditionally, all be equipped with the switch that is used for controlling whether opening of terminal flange department is opened on the GIS equipment. The provision of the valve core assembly 350 cooperates with the switch to provide a dual safeguard against opening of the terminal flange.

Of course, in a possible embodiment, in the case that the first end 3151 and the second end 3153 of the cavity 315 are not completely communicated when the valve core 351 is in the first state, a switch for controlling whether the opening at the terminal flange is opened or not may not be separately provided on the GIS device, so that the structure of the GIS device is simpler.

In this embodiment, the valve core 351 can be switched from the first state to the second state under the action of external force; the valve body 351 can be restored from the second state to the first state after the external force is removed. In other words, the valve core assembly 350 has a self-sealing function.

Preferably, the spool 351 can be transitioned from the first state to the second state by a stress applied to the spool assembly 350 when the detection device is coupled to the body 310.

In this embodiment, the valve core assembly 350 further includes a stopper 353 and an elastic member 355 disposed in the inner cavity 315 of the main body 310 and fixedly connected to the main body 310. One end of the elastic member 355 abuts against the stopper 353, and the other end abuts against one end of the valve body 351 close to the first surface 311. In other words, the elastic member 355 is located between the stopper 353 and the valve body 351, and gives an elastic pushing force to the valve body 351.

A first abutting surface 3513 and a first abutting surface 3511 are sequentially arranged on the side surface of the valve core 351 along the direction from the first surface 311 to the second surface 313, and a second abutting surface 3517 matched with the first abutting surface 3513 and a second abutting surface 3155 matched with the first abutting surface 3511 are sequentially arranged on the side wall of the inner cavity 315 along the direction from the first surface 311 to the second surface 313.

When the first contact surface 3513 of the valve body 351 contacts the second contact surface 3517 of the sidewall of the inner chamber 315, the first contact surface 3511 contacts the second contact surface 3155, and the valve body 351 is in the first state. The valve core 351 can move to the first abutting surface 3511 and the second abutting surface 3155 to deviate against the elastic force of the elastic member under the action of external force, so that the valve core 351 is in the second state.

It will be appreciated that the first abutment surface 3511 is disposed about the valve core 351 such that the first end 3151 and the second end 3153 of the interior chamber 315 are not in communication.

In this embodiment, the first attachment surface 3511 extends along a direction from the first surface 311 to the second surface 313. It can be understood that, in another embodiment, the extending direction of the first abutting surface is not limited thereto, and it is sufficient to ensure that the first abutting surface and the second abutting surface can abut so that the first end and the second end of the inner cavity are not in a connected state.

In this embodiment, a blind hole 3515 is formed at a side of the valve core 351 close to the first end 3151 of the inner cavity 315, and an air hole 3517 communicated with the blind hole 3515 is formed in a side wall of the valve core 351. When the valve core 351 is in the second state, the blind hole 3515 and the vent 3517 can enable the first end 3151 and the second end 3153 of the inner cavity 315 of the main body 310 to be communicated.

In this embodiment, the blocking member 353 is a plug, an external thread is disposed on an outer side of the blocking member 353, and the cavity 315 is disposed in an internal thread matching the external thread of the blocking member 353, that is, the blocking member 353 is fixed to the main body 310 by a threaded connection. It will be appreciated that the stop 353 needs to be a central structure for gas flow.

In this embodiment, the elastic member 355 is a spring. Specifically, the other end of the elastic member 355 abuts against the bottom wall of the blind hole 3515 of the valve body 351. Of course, in other embodiments, the elastic member 355 is not limited to a spring, but may be other members having elasticity. It will be appreciated that the resilient member need not block the blind holes when the first and second ends of the interior chamber are only in communication with the vent holes via the blind holes.

It is understood that, in other embodiments, the manner for achieving the abutting of the first abutting surface and the second abutting surface is not limited thereto, and may be achieved by other transmission mechanisms.

Likewise, in other embodiments, the configuration of the valve spool is not limited thereto. For example, the valve core may comprise a rotatable element, and the first end and the second end of the inner cavity are communicated or not through rotation of the element.

In addition, a control system may be provided to control the state of the valve element.

It is understood that in other embodiments, the adapter in the test connection is not limited to the adapter 20, but may be provided in other embodiments of the present application.

An embodiment of the utility model provides a GIS equipment is still provided, it includes the utility model provides a test connector.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The adaptor is fixedly arranged between a terminal flange of the GIS equipment and a main body of a test connector of the GIS equipment, and is characterized by comprising a third surface, a fourth surface and a gas circulation channel, wherein the third surface is used for being attached to the terminal flange, the fourth surface is used for being attached to the first surface of the main body of the test connector, and the gas circulation channel extends from the third surface to the fourth surface; a third surface of the adaptor is provided with a first sealing groove; the first sealing groove is matched with a sealing ring arranged on the terminal flange.

2. The adapter of claim 1, wherein the first seal groove is circular.

3. The adapter of claim 1, wherein the first seal groove is an annular groove.

4. The interposer as recited in claim 1, wherein the third surface and the fourth surface are two opposing parallel surfaces of the interposer.

5. The interposer as recited in claim 4, wherein the channel extends in a direction perpendicular to the third surface.

6. The adapter of claim 1 wherein the fourth surface of the adapter is provided with a second seal groove.

7. The adapter according to claim 1, wherein the adapter is provided with a fixing hole for fixedly connecting with the terminal flange; the fixing hole penetrates through the third surface and the fourth surface.

8. The adapter of claim 1 wherein the adapter is a stainless steel adapter.

9. A GIS equipment test connector, comprising:

the adapter of any of claims 1 to 8, the fourth surface of the adapter being in abutting connection with the first surface of the body.

10. A GIS device comprising the test connector of claim 9.