Discharge detection and fault diagnosis instrument of gas insulated switch cabinet

Abstract

The application relates to the field of electromagnetic detection, in particular to a discharge detection and fault diagnosis instrument of a gas insulated switch cabinet, which comprises a box shell and a diagnosis part arranged in the box shell, a double-head box seat is arranged below the box shell, a bearing groove frame is fixedly installed on the side surface of the double-head box seat, an elastic pressing part is arranged between the double-head box seat and the box shell, guide sliding blocks are slidably installed on the inner sides of the upper and lower ends of the bearing groove frame, a pressing plate is elastically installed at the front end of the bearing groove frame, a fork lug frame is rotationally connected between the front end of the guide sliding block and the pressing plate, and two release dials are elastically installed at the middle part of the bearing groove frame. The square heat dissipation holes effectively facilitate the installation of the fault diagnosis instrument on the switch cabinet, facilitate use, ensure the good heat dissipation property and detection strength of the switch cabinet, and can be flexibly adapted to the installation of square heat dissipation holes with different distribution intervals.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electromagnetic detection, in particular to a discharge detection and fault diagnosis instrument of a gas insulated switch cabinet. BACKGROUND

[0002] The partial discharge of the gas insulated switch cabinet refers to the partial breakdown or ionization phenomenon caused by the partial electric field strength exceeding the insulation medium tolerance value due to the insulation defects such as electric field concentration, insulation aging, etc. inside or outside the switch cabinet, which is an early feature of insulation failure. At this time, in order to reduce the safety hidden danger, it is usually necessary to install a fault diagnosis instrument on the cabinet body to capture the electromagnetic waves generated by the discharge inside the cabinet body, so as to timely understand the occurrence of discharge for repair.

[0003] However, the existing fault diagnosis instrument is difficult to fix on the gas insulated switch cabinet during installation because the surface of the gas insulated switch cabinet is relatively flat and there is no installation structure matched with the fault diagnosis instrument, resulting in inconvenience in use. SUMMARY

[0004] The purpose of the present application is to solve the shortcomings in the background art, and a discharge detection and fault diagnosis instrument of a gas insulated switch cabinet is proposed.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows: a discharge detection and fault diagnosis instrument of a gas insulated switch cabinet, comprising a box shell and a diagnosis part arranged in the box shell, a double-head box seat is arranged below the box shell, a bearing groove frame is fixedly installed on the side surface of the double-head box seat, a elastic pressing part is arranged between the double-head box seat and the box shell, a guide sliding block is slidingly installed on the inner side of the upper and lower ends of the bearing groove frame, a pressing plate is elastically installed at the front end of the bearing groove frame, a fork ear frame is rotatably connected between the front end of the guide sliding block and the pressing plate, two release dials are elastically installed at the middle part of the bearing groove frame, a plurality of solid ear teeth are linearly arrayed on the opposite surfaces of the two release dials, the front end surface of the solid ear tooth is inclinedly arranged, a plurality of solid ear top grooves are linearly arrayed on the inner side of the middle part of the pressing plate, the solid ear tooth is clamped in the solid ear top groove, the end part of the two guide sliding blocks is connected with two clamping groove ears, the clamping groove ears on the two guide sliding blocks are symmetrically arranged, the size of the clamping groove ear is matched with the size of the square heat dissipation hole on the switch cabinet, and the groove on the clamping groove ear is matched with the wall thickness of the square heat dissipation hole on the switch cabinet.

[0006] Preferably, two lower circular grooves are symmetrically arranged at the front end of the bearing groove frame, two upper circular grooves are symmetrically arranged at the rear end of the pressing plate, a vertical shell is coaxially fixedly installed on the inner side bottom of the lower circular groove, a vertical column is slidingly installed in the vertical shell, the vertical column penetrates out from the front end of the vertical shell, and the end part of the vertical column is fixed with the inner side bottom center position of the upper circular groove.

[0007] Preferably, the outer side of the column is wrapped with a reset spring, one end of the reset spring is fixed to the inner bottom of the lower circular groove, and the other end of the reset spring is fixed to the inner bottom of the upper circular groove.

[0008] Preferably, one of the release plates is fixedly installed with a guide shell near the middle part, a guide column is slidingly installed in the guide shell, the guide column penetrates out from the end of the guide shell, the end of the guide column is fixed to the other release plate, a reinforcing spring is fixedly installed on the inner side of the guide shell, and the end of the reinforcing spring is fixed to the guide column.

[0009] Preferably, the rear end of the release plate is slidingly installed in the inner side of the middle part of the bearing groove frame, a fixed plate column is inlaid between the upper and lower end faces of the inner side of the middle part of the bearing groove frame, the release plate is slidingly installed on the outer surface of the fixed plate column, a tension plate spring is wrapped on the outer side of the fixed plate column, and the two ends of the tension plate spring are respectively fixed to the two release plates.

[0010] Preferably, the elastic pressing piece comprises two bearing frames inlaid through the two ends of the double-head box seat, two seat columns are symmetrically slidingly installed through the front ends of the bearing frames, a box corner seat is fixedly installed on the rear end face of the seat column, the box corner seat is clamped at the corner of the box shell, a pressing box spring is wrapped on the outer side of the seat column, one end of the pressing box spring is fixed to the box corner seat, the other end of the pressing box spring is fixed to the bearing frame, and a limiting cap is coaxially inlaid on the front end of the seat column.

[0011] Preferably, one of the clamping groove ears is fixed to the guide sliding block, an adjusting insertion frame is fixedly installed on the side face of the other clamping groove ear, an extension insertion frame is fixedly installed on the corner of the guide sliding block, the end of the extension insertion frame is inserted into the end of the adjusting insertion frame, a door bearing frame is inlaid on the end of the extension insertion frame, the adjusting insertion frame is attached to the inner surface of the door bearing frame, a bolt is screwed through the middle part of the door bearing frame, and the bolt passes through the front end of the extension insertion frame and is abutted on the adjusting insertion frame.

[0012] Preferably, the diagnosis piece comprises an industrial computer inlaid through the front end face of the box shell, a collection card is arranged on the inner side of the middle part of the box shell, three DC power supplies are evenly arranged on the side of the inner side of the box shell near the collection card, a power socket with a switch is installed through the upper end of the box shell, two power adapter sockets are installed through the upper end of the box shell near the power socket with a switch, a USB interface is installed through one side of the upper part of the box shell, three BNC double female sockets are installed through one side of the lower part of the box shell, an optical module is installed on the other side of the inner side of the box shell near the collection card, and four resistors are evenly installed on the inner side edges of the box shell.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. Attach the box shell to the switch cabinet, at this time the clamping groove ears on the guide sliding block are inserted into the square heat dissipation holes on the switch cabinet, the bearing groove frame is attached to the switch cabinet, then the pressing plate is pressed towards the bearing groove frame, thereby driving the fork ear frame to move, so as to push the two guide sliding blocks to slide in opposite directions at the two ends of the bearing groove frame, thereby driving the clamping groove ears on the two guide sliding blocks to move in opposite directions in the square heat dissipation holes, so that the grooves of the clamping groove ears can be inserted into the end portions of the square heat dissipation holes, at this time the fixed ear top teeth on the dial plate and the fixed ear top groove on the pressing plate are engaged to fix the pressing plate, thereby keeping the grooves of the clamping groove ears in engagement with the hole walls of the square heat dissipation holes, so as to fix the box shell on the switch cabinet, thereby effectively facilitating the installation of the fault diagnosis instrument on the switch cabinet, and the fixing can be completed by simply pressing the pressing plate, which is simple and convenient to use.

[0015] 2. The double-headed box seat can bear the box shell, so that the box shell and the square heat dissipation holes are misaligned to avoid the square heat dissipation holes being blocked by the box shell, thereby ensuring good heat dissipation of the switch cabinet, and after fixing, the compression spring will generate a pressing force to make the box shell tightly attached to the shell of the switch cabinet, so as to directly capture the electromagnetic waves generated by the discharge inside the cabinet body when discharge occurs, thereby ensuring the detection strength.

[0016] 3. By loosening the bolts, the adjustment insert frame that is tightly pressed can be moved on the extension insert frame, thereby driving the clamping groove ears on the adjustment insert frame to move, so as to adjust the distance between the clamping groove ears on both sides to adapt to the left and right distribution interval of the square heat dissipation holes, and by pressing the pressing plate to different degrees, the distance between the clamping groove ears above and below after moving in opposite directions can be changed, thereby adapting to the upper and lower distribution interval of the square heat dissipation holes, so as to flexibly adapt to the installation of square heat dissipation holes with different distribution intervals. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application;

[0018] Figure 2 It is a partial view of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application;

[0019] Figure 3 It is a schematic view of the box corner seat of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application;

[0020] Figure 4 It is a cross-sectional view of the pressing plate of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application;

[0021] Figure 5 The release dial plate of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure;

[0022] Figure 6 The release dial plate of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure; Figure 4 The enlarged view of the middle A is shown in the figure;

[0023] Figure 7 The release dial plate of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure; Figure 5 The enlarged view of the middle B is shown in the figure;

[0024] Figure 8 The extension rack of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure;

[0025] Figure 9 The internal view of the box shell of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure;

[0026] Figure 10 The use view of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure;

[0027] Figure 11 The release dial plate of the discharge detection and fault diagnosis instrument of the gas insulated switch cabinet of the present application is shown in the figure; Figure 10 The enlarged view of the middle C is shown in the figure.

[0028] In the figure: 1, box shell; 2, bearing groove rack; 3, dial plate; 4, extension rack; 5, clamping groove ear; 6, guide slider; 7, release dial plate; 8, double-head box seat; 9, guide shell; 10, guide column; 11, reinforcing spring; 12, fixed plate column; 13, plate spring; 14, upper circular groove; 15, stand column; 16, return spring; 17, stand shell; 18, lower circular groove; 19, fork ear rack; 20, fixed ear top tooth; 21, fixed ear top groove; 22, adjustment rack; 23, door bearing rack; 24, bolt; 25, box corner seat; 26, box pressing spring; 27, bearing rack; 28, seat column; 29, limit cap; 30, DC power supply; 31, acquisition card; 32, power supply socket with switch; 33, power adapter socket; 34, resistor; 35, optical module; 36, BNC double female head socket; 37, industrial computer; 38, USB interface; 39, switch cabinet; 40, square heat dissipation hole. DETAILED DESCRIPTION

[0029] The following description is provided to enable any person skilled in the art to practice the present application. The preferred embodiments in the following description are only examples of the present application and various modifications can be made by those skilled in the art.

[0030] As Figures 1-11The discharge detection and fault diagnosis instrument of a gas insulated switch cabinet shown comprises a box shell 1 and a diagnosis part arranged in the box shell 1, a double-head box seat 8 is arranged below the box shell 1, the double-head box seat 8 can bear the box shell 1, the box shell 1 and the square heat dissipation hole 40 are misaligned to avoid the square heat dissipation hole 40 being shielded by the box shell 1, thus ensuring good heat dissipation of the switch cabinet 39, a bearing groove frame 2 is fixedly installed on the side surface of the double-head box seat 8, a elastic pressing part is arranged between the double-head box seat 8 and the box shell 1, guide sliding blocks 6 are slidingly installed on the inner side of the upper and lower ends of the bearing groove frame 2, the bearing groove frame 2 serves as a sliding surface for the guide sliding blocks 6, a pressing plate 3 is elastically installed at the front end of the bearing groove frame 2, fork yoke frames 19 are rotatably connected between the front end of the guide sliding blocks 6 and the pressing plate 3, two release dials 7 are elastically installed at the middle part of the bearing groove frame 2, a plurality of fixed ear teeth 20 are linearly arranged on the opposite surfaces of the two release dials 7, the front end surface of the fixed ear tooth 20 is inclined, when the pressing plate 3 is pressed, the inclined surface of the fixed ear tooth 20 is used to move the two release dials 7 towards each other, thus moving the fixed ear tooth 20, making it separate from the fixed ear groove 21, allowing the pressing plate 3 to be normally pressed, a plurality of fixed ear grooves 21 are linearly arranged on the upper and lower end surfaces of the middle inner side of the pressing plate 3, the fixed ear tooth 20 is clamped in the fixed ear groove 21, the cooperation between the fixed ear tooth 20 and the fixed ear groove 21 can fix the pressing plate 3 pressed to different degrees in real time, the end parts of the two guide sliding blocks 6 are connected with two clamping groove ears 5, the clamping groove ears 5 on the two guide sliding blocks 6 are symmetrically arranged, the size of the clamping groove ear 5 is matched with that of the square heat dissipation hole 40 on the switch cabinet 39, thus ensuring that the clamping groove ear 5 can smoothly pass through the square heat dissipation hole 40, the groove on the clamping groove ear 5 is matched with the wall thickness of the square heat dissipation hole 40 on the switch cabinet 39, thus allowing the groove on the clamping groove ear 5 to be tightly inserted with the hole wall of the square heat dissipation hole 40, avoiding loosening.

[0031] Two lower circular grooves 18 are symmetrically arranged at the front end of the bearing groove frame 2, two upper circular grooves 14 are symmetrically arranged at the rear end of the pressing plate 3, the lower circular groove 18 and the upper circular groove 14 both serve as containing parts, a vertical shell 17 is coaxially fixedly installed on the inner side bottom of the lower circular groove 18, a vertical column 15 is slidingly installed in the vertical shell 17, the vertical column 15 penetrates out of the front end of the vertical shell 17, the cooperation between the vertical shell 17 and the vertical column 15 serves as a guide for the pressing plate 3, the end part of the vertical column 15 is fixed with the inner side bottom center position of the upper circular groove 14.

[0032] A return spring 16 is wound around the outer side of the vertical column 15 and the outer side of the vertical shell 17, one end of the return spring 16 is fixed with the inner side bottom of the lower circular groove 18, the other end of the return spring 16 is fixed with the inner side bottom of the upper circular groove 14, when the pressing plate 3 loses the limit, the return spring 16 can push the pressing plate 3 to move forward and reset.

[0033] One of the release dial 7 is fixedly installed with a guide shell 9 near the middle part, the inside of the guide shell 9 is slidingly installed with a guide column 10, the guide shell 9 and the guide column 10 play a role in strengthening the guidance to the release dial 7, the guide column 10 penetrates out from the end of the guide shell 9, the end of the guide column 10 is fixed with the other release dial 7, the inside of the guide shell 9 is fixedly installed with a reinforcing spring 11, the end of the reinforcing spring 11 is fixed with the guide column 10, the reinforcing spring 11 can strengthen the thrust to the release dial 7, so that the fixed ear teeth 20 and the fixed ear groove 21 can be clamped together.

[0034] The rear end of the release dial 7 is slidingly installed in the middle inside of the bearing groove frame 2, which can avoid the release dial 7 from rotating, the middle inside of the bearing groove frame 2 is inlaid with a fixed plate column 12 between the upper and lower end faces, the release dial 7 is slidingly installed on the outer surface of the fixed plate column 12, the fixed plate column 12 can guide the release dial 7 on one hand and prevent the release dial 7 and the bearing groove frame 2 from separating on the other hand, the outside of the fixed plate column 12 is wound with a tension plate spring 13, the two ends of the tension plate spring 13 are respectively fixed with the two release dials 7, the tension plate spring 13 can spread the two release dials 7 apart, so that the fixed ear teeth 20 and the fixed ear groove 21 can be clamped together.

[0035] The elastic pressing part includes two bearing frames 27 inlaid through the two ends of the double-head box seat 8, the front end of the bearing frame 27 is symmetrically slidingly installed with two seat columns 28, the bearing frame 27 plays a role in bearing the seat column 28, the rear end face of the seat column 28 is fixedly installed with a box corner seat 25, the seat column 28 plays a role in guiding the box corner seat 25, the box corner seat 25 is clamped at the corner of the box shell 1, which can facilitate the positioning and pressing of the box shell 1, the outside of the seat column 28 is wound with a box pressing spring 26, one end of the box pressing spring 26 is fixed with the box corner seat 25, the other end of the box pressing spring 26 is fixed with the bearing frame 27, after being fixed, the box pressing spring 26 will generate a squeezing force, so that the box shell 1 can be tightly attached to the shell of the switch cabinet 39, so as to directly capture the electromagnetic waves generated by the discharge inside the cabinet body when discharge occurs, thereby ensuring the detection strength, the front end of the seat column 28 is coaxially inlaid with a limiting cap 29, the limiting cap 29 plays a role in preventing the seat column 28 and the bearing frame 27 from separating.

[0036] One of the card slot ears 5 is fixed with the guide slider 6, the side of the other card slot ear 5 is fixedly installed with an adjusting plug holder 22, the corner of the guide slider 6 is fixedly installed with an extension plug holder 4, the end of the extension plug holder 4 is inserted with the end of the adjusting plug holder 22, the end of the extension plug holder 4 is inlaid with a door carrier 23, the adjusting plug holder 22 is attached to the inner surface of the door carrier 23, the door carrier 23 plays a role in avoiding the separation of the extension plug holder 4 and the adjusting plug holder 22, the middle of the door carrier 23 is penetrated and screwed with a bolt 24, the bolt 24 passes through the front end of the extension plug holder 4 and is on the adjusting plug holder 22, the bolt 24 plays a role in fixing the adjusting plug holder 22, loosening the bolt 24 can make the adjusting plug holder 22 move, so that the adjusting plug holder 22 on the extension plug holder 4 can slide, and then drive the card slot ear 5 on the adjusting plug holder 22 to move, so as to adjust the distance between the two card slot ears 5 to adapt to the left and right distribution interval of the square heat dissipation hole 40.

[0037] The diagnostic part includes an industrial computer 37 inlaid through the front end surface of the box shell 1, the industrial computer 37 is used to run the built-in software, the inside of the box shell 1 is provided with a collection card 31 in the middle, the collection card 31 supports 4-channel synchronous sampling, three DC power supplies 30 are evenly distributed on the side of the box shell 1 close to the collection card 31, the three DC power supplies 30 are +12V, -12V and +4V respectively, and are connected with the isolation transformer to ensure stable power supply, a power supply socket 32 with a switch is installed through the upper end of the box shell 1, two power adapter sockets 33 are installed through the upper end of the box shell 1 close to the power supply socket 32 with a switch, a USB interface 38 is installed through the upper side of the box shell 1, three BNC double female head sockets 36 are installed through the lower side of the box shell 1, an optical module 35 is installed on the other side of the box shell 1 close to the collection card 31, the optical module 35 realizes photoelectric signal conversion, four resistors 34 are evenly distributed and installed at the edge of the inside of the box shell 1, the design of the BNC double female head socket 36 and the four resistors 34 ensures efficient transmission of high-frequency signals, the optical module 35 and the optical fiber solve the problem of long-distance anti-interference, and the combination of the industrial computer 37 and the collection card 31 provides real-time diagnostic capability, the above diagnostic method and related components are prior art and have been widely used, so they are not described in detail here.

[0038] In use, according to the left and right distribution interval of the square heat holes 40, loosen the bolt 24, make the adjusting bracket 22 active, so that it can slide on the extension bracket 4, and then drive the clamping groove ear 5 on the adjusting bracket 22 to move, so as to adjust the interval between the clamping groove ears 5 on both sides, so as to adapt to the left and right distribution interval of the square heat holes 40, then attach the box shell 1 to the switch cabinet 39, at this time, the clamping groove ear 5 on the guide sliding block 6 is inserted into the square heat hole 40 on the switch cabinet 39, and the bearing groove frame 2 is attached to the switch cabinet 39, then press the plate 3 towards the bearing groove frame 2, and then drive the fork ear frame 19 to move, so as to push the guide sliding block 6, so that the two guide sliding blocks 6 can slide at the opposite ends of the bearing groove frame 2, and then drive the clamping groove ears 5 on the two guide sliding blocks 6 to move oppositely in the square heat holes 40, so that the recess of the clamping groove ear 5 can be inserted at the end of the square heat hole 40, at this time, the fixed ear top tooth 20 on the dial plate 7 and the fixed ear top groove 21 on the plate 3 are released, so as to fix the plate 3, and then keep the recess of the clamping groove ear 5 in the state of being clamped with the hole wall of the square heat hole 40, so as to install the box shell 1 on the switch cabinet 39, then the fault diagnosis instrument can be used for detection, in this process, through the setting of the double-head box seat 8, the box shell 1 can be carried, so that the box shell 1 and the square heat hole 40 are misaligned, so as to avoid the square heat hole 40 being blocked by the box shell 1, so as to ensure the good heat dissipation of the switch cabinet 39, and after fixing, the compression box spring 26 will generate a squeezing force, so that the box shell 1 can be tightly attached to the shell of the switch cabinet 39, so as to directly capture the electromagnetic waves generated by the discharge inside the cabinet body when discharge occurs, so as to ensure the detection strength.

[0039] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A discharge detection and fault diagnosis instrument for gas insulated switchgear, comprising a box shell (1) and a diagnosis component arranged in the box shell (1), characterized in that: The lower part of the box shell (1) is provided with a double-end box seat (8), the side surface of the double-end box seat (8) is fixedly installed with a bearing groove frame (2), a elastic pressing piece is arranged between the double-end box seat (8) and the box shell (1), the inner side of the upper and lower end portions of the bearing groove frame (2) is slidably installed with a guide sliding block (6), the front end of the bearing groove frame (2) is elastically installed with a pressing plate (3), the front end portion of the guide sliding block (6) is rotatably connected with a fork lug frame (19) between the pressing plate (3), the middle portion of the bearing groove frame (2) is elastically installed with two release dials (7), a plurality of fixed ear teeth (20) are linearly arrayed on the opposite surfaces of the two release dials (7), the front end surface of the fixed ear tooth (20) is obliquely arranged, a plurality of fixed ear tooth grooves (21) are linearly arrayed on the upper and lower end surfaces of the middle inner side of the pressing plate (3), the fixed ear tooth (20) is clamped in the inside of the fixed ear tooth groove (21), the end portions of the two guide sliding blocks (6) are connected with two clamping groove ears (5), the clamping groove ears (5) on the two guide sliding blocks (6) are symmetrically arranged, the size of the clamping groove ear (5) is matched with the square heat dissipation hole on the switch cabinet, the groove on the clamping groove ear (5) is matched with the wall thickness of the square heat dissipation hole on the switch cabinet.

2. The discharge detection and fault diagnosis instrument for a gas insulated switchgear according to claim 1, characterized in that: The front end of the bearing groove frame (2) is symmetrically provided with two lower circular grooves (18), the rear end of the pressing plate (3) is symmetrically provided with two upper circular grooves (14), the inner side bottom of the lower circular groove (18) is coaxially fixedly installed with a vertical shell (17), the inside of the vertical shell (17) is slidably installed with a vertical column (15), the vertical column (15) penetrates out from the front end of the vertical shell (17), the end portion of the vertical column (15) is fixed with the inner side bottom center position of the upper circular groove (14).

3. The discharge detection and fault diagnosis instrument for gas insulated switchgear according to claim 2, characterized in that: The outer side of the vertical column (15) and the outer side of the vertical shell (17) are wound with a reset spring (16), one end of the reset spring (16) is fixed with the inner side bottom of the lower circular groove (18), the other end of the reset spring (16) is fixed with the inner side bottom of the upper circular groove (14).

4. The discharge detection and fault diagnosis instrument for a gas insulated switchgear according to claim 1, characterized in that: One of the release dials (7) is fixedly installed with a guide shell (9) near the middle portion, the inside of the guide shell (9) is slidably installed with a guide column (10), the guide column (10) penetrates out from the end portion of the guide shell (9), the end portion of the guide column (10) is fixed with the other release dial (7), the inner side of the guide shell (9) is fixedly installed with a reinforcing spring (11), the end portion of the reinforcing spring (11) is fixed with the guide column (10).

5. The discharge detection and fault diagnosis instrument for a gas insulated switchgear according to claim 1, characterized in that: The rear end portion of the release dial (7) is slidably installed on the middle inner side of the bearing groove frame (2), the middle inner side of the bearing groove frame (2) is embedded with a fixed plate column (12) between the upper and lower end surfaces, the release dial (7) is slidably installed on the outer surface of the fixed plate column (12), the outer side of the fixed plate column (12) is wound with a tension plate spring (13), the two ends of the tension plate spring (13) are respectively fixed with the two release dials (7).

6. The discharge detection and fault diagnosis instrument for a gas insulated switchgear according to claim 1, characterized in that: The elastic pressing piece comprises two bearing frames (27) embedded through the two ends of the double-end box seat (8), the front ends of the bearing frames (27) are symmetrically provided with two seat columns (28) slidingly installed through the front ends, the rear ends of the seat columns (28) are fixedly provided with box corner seats (25), the box corner seats (25) are clamped at the corners of the box shell (1), the outer sides of the seat columns (28) are wound with box pressing springs (26), one end of the box pressing spring (26) is fixed with the box corner seat (25), the other end of the box pressing spring (26) is fixed with the bearing frame (27), and the front end of the seat column (28) is coaxially embedded with a limiting cap (29).

7. The discharge detection and fault diagnosis instrument for a gas insulated switchgear according to claim 1, characterized in that: One of the clamping slot ears (5) is fixed with a guide sliding block (6), the side surface of the other clamping slot ear (5) is fixedly provided with an adjusting insertion frame (22), the corner of the guide sliding block (6) is fixedly provided with an extension insertion frame (4), the end of the extension insertion frame (4) is inserted with the end of the adjusting insertion frame (22), the end of the extension insertion frame (4) is embedded with a door bearing frame (23), the adjusting insertion frame (22) is attached to the inner surface of the door bearing frame (23), the middle part of the door bearing frame (23) is screwed with a bolt (24) penetrating through the front end of the extension insertion frame (4) and abutting on the adjusting insertion frame (22).

8. The discharge detection and fault diagnosis instrument for a gas insulated switchgear according to claim 1, characterized in that: The diagnostic piece comprises an industrial computer (37) embedded through the front end surface of the box shell (1), the inner side of the box shell (1) is provided with a collection card (31) in the middle part, the inner side of the box shell (1) is provided with three DC power supplies (30) uniformly distributed near the collection card (31), the upper end of the box shell (1) is provided with a power supply socket (32) with a switch penetratingly installed, the upper end of the box shell (1) is provided with two power adapter sockets (33) penetratingly installed near the power supply socket (32) with a switch, the upper part of one side of the box shell (1) is provided with a USB interface (38) penetratingly installed, the lower part of one side of the box shell (1) is provided with three BNC double female head sockets (36) penetratingly installed, the other side of the box shell (1) is provided with an optical module (35) installed near the collection card (31) in the inside, and the inner side edges of the box shell (1) are provided with four resistors (34) uniformly installed.

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