Pluggable GIS terminal type test device

Abstract

The utility model provides a plug-in GIS terminal type test device, which comprises a vertical test cylinder, a connecting seat, a support and a plug-in GIS terminal female head, and is characterized in that the vertical test cylinder is mounted above the top surface of the support through the connecting seat, the connecting seat is fixedly connected with the top surface of the support, and the plug-in GIS terminal female head penetrates through the connecting seat to enter the vertical test cylinder; the height of the bracket is matched with the height of the cable layer, and the cable layer is an area of a cable in a field installation environment; the plug-in GIS terminal female head is detachably connected with the plug-in GIS terminal male head through a conductor plug-in structure, the plug-in GIS terminal male head is connected with a cable, and the cable is arranged from the bottom end to the top end in the height direction of the support. According to the utility model, the vertical test cylinder is arranged at the top end of the bracket, so that the problem that the on-site installation environment of the plug-in GIS terminal cannot be restored by the type test device in the prior art is solved, the height of the on-site GIS switch equipment of the plug-in GIS terminal is simulated, the reliability of the plug-in GIS terminal is favorably verified, and the verification precision of the type test is improved.

Description

Technical Field

[0001] The utility model relates to the field of type tests, and in particular to a plug-and-play GIS terminal type test device. Background Art

[0002] Cable testing is to check the cable quality, insulation condition and various tests on the cable line. Since power cables are used to transmit high-power electric energy and generally work under high voltage and large current conditions, high requirements are imposed on their electrical performance. In order to inspect the manufacturing and installation quality of the cable, reduce operation accidents and improve power supply reliability, performance tests must be carried out.

[0003] Cable tests are roughly divided into routine tests, sampling tests, type tests, handover tests and preventive tests, etc. According to the requirements of national standards, all power cables and accessories must undergo type tests, and only products that pass the type test certification are eligible to be sold on the market.

[0004] In the prior art, the two gas-insulated switchgear (GIS) terminals in the type test cable circuit are respectively fixed at both ends of a horizontal metal test cylinder, and are horizontally butt-connected and installed through metal connectors inside. Finally, SF6 gas is filled into the test cylinder for testing. Although this type test device simulates the internal operation structure of the GIS switchgear, in fact, the actual GIS switchgear is usually arranged on the second floor or even higher in the substation. Therefore, the vertical distance from the bottom of the plug-and-play GIS terminal to the ground of the cable layer is at least 5 m.

[0005] Regarding the type test of the plug-and-play GIS terminal using a horizontal metal test cylinder for installation, it cannot meet the above vertical distance requirements, that is, the type test using a horizontal metal test cylinder for installation cannot reflect the actual on-site installation environment, so it is impossible to verify whether the conductor connection structure inside the plug-and-play GIS terminal is reliable. For the plug-and-play GIS terminals put on the market, during long-term operation, there is a risk that the conductor connection structure inside the terminal may become disconnected due to the large self-weight of the cable and the heat-induced creep of the cable under large load operation, and there are potential operation hazards, and the reliability of the plug-and-play GIS terminal cannot be guaranteed. Content of the Utility Model

[0006] The purpose of the utility model is to provide a plug-and-play GIS terminal type test device, which solves the problem that the type test device in the prior art cannot restore the on-site installation environment of the plug-and-play GIS terminal by installing a vertical test cylinder at the top of the bracket. The cable at the bottom of the plug-and-play GIS terminal does not need to be fixed with a cable clamp, and the plug-and-play GIS terminal female head and the plug-and-play GIS terminal male head are completely connected by a conductor plugging structure, which is beneficial to verifying the reliability of the plug-and-play GIS terminal and improving the verification accuracy of the type test.

[0007] The technical solutions for achieving the object of the present utility model are as follows:

[0008] The present utility model provides a plug-and-play GIS terminal type test device, including: a vertical test cylinder, a connecting seat, a bracket, and a plug-and-play GIS terminal female head. The vertical test cylinder is installed above the top surface of the bracket through the connecting seat. The connecting seat is fixedly connected to the top surface of the bracket. The plug-and-play GIS terminal female head passes through the connecting seat and enters the vertical test cylinder;

[0009] The height of the bracket matches the height from the bottom of the plug-and-play GIS terminal to the ground of the cable layer. The cable layer is the area where the cables in the on-site installation environment of the plug-and-play GIS terminal are located;

[0010] The plug-and-play GIS terminal female head is detachably connected to the plug-and-play GIS terminal male head through a conductor plugging and unplugging structure. The plug-and-play GIS terminal male head is connected to a cable, and the cable is arranged from the bottom to the top along the height direction of the bracket.

[0011] As a further improvement of the present utility model, the bottom end of the vertical test cylinder is detachably connected to the connecting seat. A ball valve and a vacuum pressure gauge are provided on the top surface of the vertical test cylinder. The ball valve and the vacuum pressure gauge are communicated with the vertical test cylinder;

[0012] The vertical test cylinder, the connecting seat, and the plug-and-play GIS terminal female head are connected into a sealed cylinder body. The vertical test cylinder is evacuated or filled with SF6 insulating gas through the ball valve.

[0013] As a further improvement of the present utility model, the bottom end of the connecting seat is detachably fixed to the top end of the bracket, and the top end of the connecting seat is detachably fixed to the bottom end of the vertical test cylinder; the connecting seat is provided with a through hole for the plug-and-play GIS terminal female head to pass through.

[0014] As a further improvement of the present utility model, the bracket includes a bracket body and a cable clamp. The bracket body is fixedly connected to the cable clamp;

[0015] The cable clamp is located directly below the plug-and-play GIS terminal female head and is concentric with the plug-and-play GIS terminal female head;

[0016] The cable clamp contacts the cable.

[0017] As a further improvement of the present utility model, the bracket body includes a steel structure frame, cross bars, diagonal braces, and ladder steps. The cross bars are arranged along the height direction of the steel structure frame to divide the steel structure frame into multiple layers. Diagonal braces are fixed to the steel structure frame corresponding to each layer area. The ladder steps are fixedly connected to the cross bars;

[0018] The cable hoop is fixed to the ladder rung.

[0019] As a further improvement of the present utility model, the bracket body further includes support channel steels and adjusting foot cups. The support channel steels are distributed around the bottom end of the steel structure frame body, and the support channel steels are fixedly connected to the bottom end of the steel structure frame body; the adjusting foot cups are installed at the ends of the support channel steels extending beyond the steel structure frame body.

[0020] As a further improvement of the present utility model, a top plate is provided on the top surface of the steel structure frame body, and the top plate is connected to the connecting seat.

[0021] As a further improvement of the present utility model, there are multiple pluggable GIS terminal female heads;

[0022] The ends of at least two of the pluggable GIS terminal female heads entering the vertical test cylinder are connected by a rigid connection metal part, and the rigid connection metal part is located inside the vertical test cylinder;

[0023] At least two of the pluggable GIS terminal female heads are detachably connected to the pluggable GIS terminal male head through a conductor plugging and unplugging structure.

[0024] As a further improvement of the present utility model, the pluggable GIS terminal female head includes an insulating sleeve and a plum blossom contact assembly. The insulating sleeve passes through the connecting seat and enters the vertical test cylinder, and the plum blossom contact assembly is connected to the insulating sleeve;

[0025] The pluggable GIS terminal male head includes a conductor plugging head, a stop sleeve, a stress cone, a cone support assembly, a tail pipe and a cable. The conductor plugging head is fixedly connected to the top end of the cable, the stop sleeve is screwed and fixed on the conductor plugging head, and the tail pipe, the cone support assembly and the stress cone are sequentially sleeved on the cable;

[0026] The conductor plugging and unplugging structure includes the plum blossom contact assembly and the conductor plugging head, and the plum blossom contact assembly and the conductor plugging head are detachably connected.

[0027] As a further improvement of the present utility model, a pressure ring is sleeved on the end of the pluggable GIS terminal female head exposed outside the vertical test cylinder, and the pressure ring is detachably connected to the connecting seat;

[0028] The pluggable GIS terminal male head is located below the end of the pluggable GIS terminal female head exposed outside the vertical test cylinder and enters the inside of the pluggable GIS terminal female head for pluggable connection through the conductor plugging and unplugging structure.

[0029] Compared with the prior art, the beneficial effects of the present utility model are:

[0030] 1. The utility model solves the problem that the existing type test device cannot restore the on-site installation environment of the plug-and-play GIS terminal by installing a vertical test cylinder at the top of the bracket, simulates the height of the GIS switchgear at the on-site of the plug-and-play GIS terminal, and the bottom cable of the plug-and-play GIS terminal does not need to be fixed by a cable clamp. It completely relies on the conductor plug-and-play structure to connect the female head and male head of the plug-and-play GIS terminal, which is beneficial to verifying the reliability of the plug-and-play GIS terminal and improving the verification accuracy of the type test.

[0031] 2. The utility model connects the vertical test cylinder, the connecting seat and the female head of the plug-and-play GIS terminal into a sealed cylinder body, improves the sealing performance of the vertical test cylinder, avoids insufficient vacuum or leakage of SF6 insulating gas during the type test, and improves the safety of the type test.

[0032] 3. The utility model adopts a detachable fixing method at the bottom end of the vertical test cylinder and the top end of the connecting seat, and between the bottom end of the connecting seat and the top end of the bracket. This not only increases the height of the vertical test cylinder to better adapt to the real on-site environment, but also facilitates the disassembly and assembly of the vertical test cylinder, the connecting seat and the bracket, further meeting the replacement requirements.

[0033] 4. The utility model is provided with a plurality of cable clamps on the bracket body of the bracket. When the cable is arranged from the bottom end to the top end along the height direction of the bracket, it contacts the cable clamps, and there is no fixed connection between the cable clamps and the cable. Such a setting makes the bottom cable of the plug-and-play GIS terminal completely rely on the conductor plug-and-play structure to connect and lock the female head and male head of the plug-and-play GIS terminal during the type test, avoiding the risk of disconnection of the internal conductor connection structure of the plug-and-play GIS terminal caused by the large self-weight of the cable. The type test device of the plug-and-play GIS terminal verifies the reliability of the internal conductor connection of the plug-and-play GIS terminal.

[0034] 5. The utility model adopts the method of fixing the cable clamp to the bracket body to improve the stability of the cable clamp. In addition, the utility model adopts the method of connecting the steel structure frame by cross bars and diagonal braces to improve the stability of the steel structure frame.

[0035] 6. The utility model adopts the method of distributing support channel steels around the bottom end of the steel structure frame and setting adjusting foot cups at the ends exceeding the steel structure frame. This can not only further improve the stability of the steel structure frame, but also use the adjusting foot cups to finely adjust the steel structure frame, making the bracket body adapt to different ground surfaces during installation, and having good compatibility between the bracket body and the ground.

[0036] 7. The conductor plugging and unplugging structure composed of the plum blossom contact assembly and the conductor plug head in the present utility model can completely bear the weight of the cable and the cable creep caused by the large-load operation during the type test. Without the need for a fixed cable clamp, the pluggable GIS terminal female head and the pluggable GIS terminal male head are completely connected by the conductor plugging and unplugging structure, which is conducive to verifying the reliability of the pluggable GIS terminal and improving the verification accuracy of the type test. Brief Description of the Drawings

[0037] Figure 1 FIG. is a schematic diagram of the overall structure of a pluggable GIS terminal type test device provided by the present utility model;

[0038] Figure 2 FIG. is a schematic diagram of the structure of the pluggable GIS terminal male head when not installed provided by the present utility model;

[0039] Figure 3 FIG. is a schematic diagram of the structure of the pluggable GIS terminal male head when not installed and the vertical test cylinder is opened provided by the present utility model;

[0040] Reference Numerals: 1 - vertical test cylinder; 10 - vacuum pressure gauge; 11 - lifting lug; 12 - ball valve; 2 - connecting seat; 3 - first pluggable GIS terminal female head; 4 - first pluggable GIS terminal male head; 5 - second pluggable GIS terminal female head; 50 - insulating sleeve; 51 - plum blossom contact assembly; 6 - second pluggable GIS terminal male head; 60 - conductor plug head; 61 - stop sleeve; 62 - stress cone; 63 - cone support assembly; 64 - tail pipe; 65 - cable; 7 - bracket; 70 - column; 71 - cross bar; 72 - diagonal brace; 73 - ladder rung; 74 - cable clamp; 75 - top plate; 76 - support channel steel; 77 - adjusting foot cup; 78 - bottom plate; 8 - pressure ring; 9 - rigid connection metal part. Detailed Description of the Embodiments

[0041] The present utility model will be described in detail below in conjunction with the embodiments shown in the drawings. However, it should be noted that these embodiments are not limitations on the present utility model. Any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0042] In the description of this embodiment, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this solution and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this solution.

[0043] The terms "installation", "connection", and "linkage" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this solution can be understood according to specific circumstances.

[0044] Please refer to Figure 1 , an embodiment of the present utility model discloses a plug-in GIS terminal type test device, including: a vertical test cylinder 1, a connection seat 2, a bracket 7, and a plug-in GIS terminal female head. The vertical test cylinder 1 is installed above the top surface of the bracket 7 through the connection seat 2. The connection seat 2 is fixedly connected to the top surface of the bracket 7. The plug-in GIS terminal female head passes through the connection seat 2 and enters the vertical test cylinder 1; the height of the bracket 7 matches the height from the bottom of the plug-in GIS terminal to the ground of the cable layer. The cable layer is the area where the cables of the on-site installation environment of the plug-in GIS terminal are located; the plug-in GIS terminal female head is detachably connected to the plug-in GIS terminal male head through a conductor plugging structure. The plug-in GIS terminal male head is connected to the cable, and the cable is arranged from the bottom end to the top end along the height direction of the bracket 7.

[0045] In actual manufacturing, preferably, the lower end of the connection seat 2 is fixed to the top end of the bracket 7 by bolts; the upper end of the connection seat 2 is connected and fixed to the open end of the vertical test cylinder 1 by bolts.

[0046] The embodiment of the present utility model adopts the method of installing the vertical test cylinder 1 at the top end of the bracket 7 to solve the problem that the type test device in the prior art cannot restore the on-site installation environment of the plug-in GIS terminal. The plug-in GIS terminal type test device simulates the height of the GIS switchgear on-site of the plug-in GIS terminal, and the cable at the bottom of the plug-in GIS terminal does not need to be fixed with a cable clamp. It completely relies on the conductor plugging structure to connect the plug-in GIS terminal female head and the plug-in GIS terminal male head, which is beneficial to verifying the reliability of the plug-in GIS terminal and improving the verification accuracy of the type test.

[0047] Please refer to Figure 1 and Figure 2 , the bottom end of the vertical test cylinder 1 of the embodiment of the present utility model is detachably connected to the connection seat 2. A ball valve 12 and a vacuum pressure gauge 10 are provided on the top surface of the vertical test cylinder 1. The ball valve 12 and the vacuum pressure gauge 10 are communicated with the vertical test cylinder 1; the vertical test cylinder 1, the connection seat 2, and the plug-in GIS terminal female head are connected into a sealed cylinder body, and the vertical test cylinder 1 is evacuated or filled with SF6 insulating gas through the ball valve 12.

[0048] Specifically, please continue to refer to Figure 1 andFigure 2 , preferably, the pluggable GIS terminal female head includes a first pluggable GIS terminal female head 3 and a second pluggable GIS terminal female head 5. In the embodiment of the present invention, the first pluggable GIS terminal female head 3, the second pluggable GIS terminal female head 5, the connecting seat 2 and the vertical test cylinder 1 form a sealed cylinder body, and the ball valve 12 and the vacuum pressure gauge 10 are communicated with the sealed cylinder body. The sealed cylinder body can be evacuated through the ball valve 12 and filled with SF6 insulating gas of 0.3~0.6MPa to avoid the high voltage brought by the cable 65 during the type test from discharging to the vertical test cylinder 1 and protect the normal operation of the pluggable GIS terminal type test device.

[0049] In the embodiment of the present invention, the vertical test cylinder 1, the connecting seat 2 and the pluggable GIS terminal female head are connected into a sealed cylinder body, improving the sealing performance of the vertical test cylinder 1, avoiding insufficient vacuum degree or leakage of SF6 insulating gas during the type test, and improving the safety of the type test.

[0050] Please continue to refer to Figure 1 , in the embodiment of the present invention, the bottom end of the above-mentioned connecting seat 2 is detachably fixed to the top end of the bracket 7, and the top end of the connecting seat 2 is detachably fixed to the bottom end of the vertical test cylinder 1; the connecting seat 2 is provided with a through hole for the pluggable GIS terminal female head to pass through. Preferably, the vertical test cylinder 1 is provided with a lifting lug 11 at the top, and the lifting lug 11 can facilitate the lifting of the vertical test cylinder 1.

[0051] In the embodiment of the present invention, the detachable fixing method of the bottom end of the vertical test cylinder 1 to the top end of the connecting seat 2 and the detachable fixing method of the bottom end of the connecting seat 2 to the top end of the bracket 7 not only increase the height of the vertical test cylinder 1 to better adapt to the real site environment, but also facilitate the disassembly and assembly of the vertical test cylinder 1, the connecting seat 2 and the bracket 7, further meeting the replacement requirements.

[0052] Please refer to Figure 2 and Figure 3 , in the embodiment of the present invention, there are two pluggable GIS terminal female heads; the ends of the two pluggable GIS terminal female heads entering the vertical test cylinder 1 are connected by a rigid connection metal part 9, and the rigid connection metal part 9 is located inside the vertical test cylinder 1; the two pluggable GIS terminal female heads are detachably connected to the pluggable GIS terminal male head through a conductor plugging structure. The structure of the rigid connection metal part 9 in the embodiment of the present invention is as Figure 3 shown.

[0053] Based on the above disclosed solution, please continue to refer to Figure 2 and Figure 3, define the end of the pluggable GIS terminal female head exposed to the vertical test cylinder 1 as the large head end, and the end of the pluggable GIS terminal female head passing through the connecting seat 2 and entering the vertical test cylinder 1 as the small head end. The two pluggable GIS terminal female heads in the embodiment of the present invention are the first pluggable GIS terminal female head 3 and the second pluggable GIS terminal female head 5. Similarly, the number of the above-mentioned pluggable GIS terminal male heads in the embodiment of the present invention is also two. The two pluggable GIS terminal male heads include the first pluggable GIS terminal male head 4 and the second pluggable GIS terminal male head 6. Preferably, the connecting seat 2 is provided with two through holes that can penetrate the small head ends of the first pluggable GIS terminal female head 3 and the second pluggable GIS terminal female head 5; the top of the small head end of the first pluggable GIS terminal female head 3 is connected to the top of the small head end of the second pluggable GIS terminal female head 5 through a rigid connection metal part 9; the lower end of the first pluggable GIS terminal female head 3 is provided with the first pluggable GIS terminal male head 4 connected to the first pluggable GIS terminal female head 3 through a conductor plugging structure; the lower end of the second pluggable GIS terminal female head 5 is provided with the second pluggable GIS terminal male head 6 connected to the second pluggable GIS terminal female head 5 through a conductor plugging structure.

[0054] Please continue to refer to Figure 2 and Figure 3 , the pluggable GIS terminal female head in the embodiment of the present invention includes an insulating sleeve 50 and a petal contact assembly 51. The insulating sleeve 50 passes through the connecting seat 2 and enters the vertical test cylinder 1, and the petal contact assembly 51 is connected to the insulating sleeve 50; the pluggable GIS terminal male head includes a conductor plug 60, a stop sleeve 61, a stress cone 62, a cone support assembly 63, a tail pipe 64 and a cable 65. The conductor plug 60 is fixedly connected to the top end of the cable. The stop sleeve 61 is screwed and fixed on the conductor plug 60. The tail pipe 64, the cone support assembly 63 and the stress cone 62 are sequentially sleeved on the cable 65; the conductor plugging structure includes the petal contact assembly 51 and the conductor plug 60, and the petal contact assembly 51 and the conductor plug 60 are detachably connected.

[0055] Please continue to refer to Figure 2 and Figure 3 , the structures of the first pluggable GIS terminal female head 3 and the second pluggable GIS terminal female head 5 in the embodiment of the present invention are the same, and both include an insulating sleeve 50 and a petal contact assembly 51. The structures of the first pluggable GIS terminal male head 4 and the second pluggable GIS terminal male head 6 are the same, and both include a conductor plug 60, a stop sleeve 61, a stress cone 62, a cone support assembly 63, a tail pipe 64 and a cable 65. The tail pipe 64, the cone support assembly 63 and the stress cone 62 are sequentially sleeved on the cable 65; the conductor at the top end of the conductor plug 60 and the cable 65 adopts a hexagonal surrounding pressure fixing method, and the stop sleeve 61 is screwed and fixed on the conductor plug 60.

[0056] In the embodiment of the present utility model, the conductor plugging and unplugging structure composed of the plum blossom contact assembly 51 and the conductor plug 60 completely bears the weight of the cable 65 and the creep of the cable 65 caused by the large-load operation during the type test. There is no need to fix the cable clamp. The plugging and unplugging type GIS terminal female head and the plugging and unplugging type GIS terminal male head are completely connected by relying on the conductor plugging and unplugging structure, which is beneficial to verifying the reliability of the plugging and unplugging type GIS terminal and improving the verification accuracy of the type test.

[0057] Please continue to refer to Figure 2 , in order to achieve the reliable connection between the plugging and unplugging type GIS terminal female head and the connection seat 2, in the embodiment of the present utility model, a pressure ring is sleeved on the end of the plugging and unplugging type GIS terminal female head exposed to the vertical test cylinder 1, and the pressure ring is detachably connected to the connection seat 2; the plugging and unplugging type GIS terminal male head is located below the end of the plugging and unplugging type GIS terminal female head exposed to the vertical test cylinder 1 and enters the inside of the plugging and unplugging type GIS terminal female head for plugging and unplugging connection through the conductor plugging and unplugging structure.

[0058] Please continue to refer to Figure 2 and Figure 3 , pressure rings 8 are sleeved on the large-head ends of the first plugging and unplugging type GIS terminal female head 3 and the second plugging and unplugging type GIS terminal female head 5, and the pressure rings 8 are fixed to the connection seat 2 by bolts.

[0059] Please continue to refer to Figure 1 and Figure 2 , the bracket 7 in the embodiment of the present utility model includes a bracket body and a cable clamp 74, and the bracket body is fixedly connected to the cable clamp 74; the cable clamp 74 is located directly below the plugging and unplugging type GIS terminal female head and is concentrically arranged with the plugging and unplugging type GIS terminal female head; the cable clamp 74 contacts the cable 65.

[0060] In the embodiment of the present utility model, a plurality of cable clamps 74 are arranged on the bracket body of the bracket 7. When the cable 65 is arranged from the bottom to the top along the height direction of the bracket 7, it contacts the cable clamps 74, and the cable clamps 74 are not fixedly connected to the cable 7. Such a setting makes the cable at the bottom of the plugging and unplugging type GIS terminal completely rely on the conductor plugging and unplugging structure to connect and lock the plugging and unplugging type GIS terminal female head and the plugging and unplugging type GIS terminal male head during the type test, avoiding the risk of disconnection of the internal conductor connection structure of the plugging and unplugging type GIS terminal caused by the large self-weight of the cable 65. The plugging and unplugging type GIS terminal type test device verifies the reliability of the internal conductor connection of the plugging and unplugging type GIS terminal.

[0061] Furthermore, please continue to refer to Figure 1 and Figure 2, in the above-mentioned embodiment of the utility model, the bracket body includes a steel structure frame, a cross bar 71, a diagonal brace 72 and a ladder step 73. The cross bar 71 is arranged along the height direction of the steel structure frame to divide the steel structure frame into multiple layers. Diagonal braces 72 are fixed to the steel structure frame corresponding to each layer area, and the ladder step 73 is fixedly connected to the cross bar 71; the cable clamp 74 is fixed to the ladder step 73.

[0062] In the embodiment of the utility model, the cable clamp 74 is fixed to the bracket body, which improves the stability of the cable clamp 74. In addition, in the embodiment of the utility model, the cross bar 71 and the diagonal brace 72 are used to connect the steel structure frame, which improves the stability of the steel structure frame.

[0063] More specifically, please continue to refer to Figure 1 and Figure 2 , in addition to the steel structure frame, the cross bar 71, the diagonal brace 72 and the ladder step 73, the bracket body of the embodiment of the utility model further includes a support channel steel 76 and an adjusting foot cup 77. The support channel steel 76 is distributed around the bottom end of the steel structure frame, and the support channel steel 76 is fixedly connected to the bottom end of the steel structure frame; the adjusting foot cup 77 is installed at the end of the support channel steel 76 that extends beyond the steel structure frame.

[0064] In the embodiment of the utility model, the support channel steel 76 is distributed around the bottom end of the steel structure frame and the adjusting foot cup 77 is arranged at the end that extends beyond the steel structure frame. This can not only further improve the stability of the steel structure frame, but also use the adjusting foot cup 77 to finely adjust the steel structure frame so that the bracket body can adapt to different ground surfaces during installation, and the bracket body has good compatibility with the ground.

[0065] Please continue to refer to Figure 2 , in the embodiment of the utility model, a top plate 75 is arranged on the top surface of the steel structure frame, and the top plate 75 is connected to the connecting seat 2. Please continue to refer to Figure 1 and Figure 2 , the steel structure frame of the embodiment of the utility model includes a column 70, the column 70 is composed of four equal-length angle steels, and the bottom end of the column 70 is welded to the bottom plate 78.

[0066] It should be noted that in practical applications, the bracket 7 of the embodiment of the present utility model includes a column 70, a crossbar 71, a diagonal brace 72, a ladder rung 73, a cable clamp 74, a top plate 75, a support channel steel 76, an adjusting foot cup 77, and a bottom plate 78; the height of the bracket 7 is 5 m, wherein the column 70 is composed of four equal-length angle steels, and the bottom end of the column 70 is welded to the bottom plate 78; four support channel steels 76 are circumferentially distributed at the bottom of the column 70, and the other ends of the support channel steels 76 are installed with adjusting foot cups 77 to prevent the bracket 7 from tipping over and enhance the stability; four crossbars 71 are circumferentially distributed above the support channel steels 76, and the top of the column 70 is connected to two top plates 75 through four circumferentially distributed crossbars 71; the diagonal braces 72 and the crossbars 71 are spaced along the length directions of three of the columns 70, so that one side of the bracket 7 is open, facilitating the installation of the first plug-in GIS terminal male head 4 and the second plug-in GIS terminal male head 6; the ladder rung 73 spans two crossbars 71 at the same height, and two cable clamps 74 are installed on the ladder rung 73, and the centers of the two cable clamps 74 are respectively located directly below the first plug-in GIS terminal female head 3 and the second plug-in GIS terminal female head 5 and are concentric, facilitating the installation of the male head; the materials of the column 70, the crossbar 71, the diagonal brace 73, and the ladder rung 73 are all Q235 equal-angle steels; the cable clamp is not fixed to the cable, so that the conductor plug structure composed of the plum blossom contact assembly 51 and the conductor plug 60 completely bears the weight of the cable and the cable creep caused by high-load operation during the test.

[0067] The plug-in GIS terminal female head and the plug-in GIS terminal male head of the embodiment of the present utility model are connected in a plug-in form. An plug-in GIS terminal type test device of the embodiment of the present utility model is applied to high-voltage type tests. The plug-in GIS terminal type test device of the embodiment of the present utility model has a simple structure and is easy to install, and completely restores the on-site installation environment. During the type test, the cable at the bottom of the plug-in GIS terminal is not connected and fixed to the cable clamp, and the plug-in GIS terminal female head and the plug-in GIS terminal male head are completely connected and self-locked by the conductor plug structure, verifying the reliability of the product.

[0068] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present utility model, and they are not intended to limit the protection scope of the present utility model. Any equivalent implementation manners or changes made without departing from the technical spirit of the present utility model should be included within the protection scope of the present utility model.

[0069] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-mentioned exemplary embodiments, and the present utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present utility model. Any reference signs in the claims should not be construed as limiting the claims involved.

[0070] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plug-and-play GIS terminal type test device, characterized in that Comprising: A vertical test cylinder, a connecting seat, a bracket, and a pluggable GIS terminal female head. The vertical test cylinder is installed above the top surface of the bracket through the connecting seat. The connecting seat is fixedly connected to the top surface of the bracket. The pluggable GIS terminal female head passes through the connecting seat and enters the vertical test cylinder. The height of the bracket matches the height from the bottom of the pluggable GIS terminal to the ground of the cable layer. The cable layer is the area where the cables in the on-site installation environment of the pluggable GIS terminal are located. The pluggable GIS terminal female head is detachably connected to the pluggable GIS terminal male head through a conductor plugging structure. The pluggable GIS terminal male head is connected to a cable, and the cable is arranged from the bottom to the top along the height direction of the bracket.

2. The plug-in type GIS terminal type test device according to claim 1, characterized in that, The bottom end of the vertical test cylinder is detachably connected to the connecting seat. A ball valve and a vacuum pressure gauge are provided on the top surface of the vertical test cylinder. The ball valve and the vacuum pressure gauge are communicated with the vertical test cylinder. The vertical test cylinder, the connecting seat, and the pluggable GIS terminal female head are connected to form a sealed cylinder body. The vertical test cylinder is evacuated or filled with SF6 insulating gas through the ball valve.

3. The plug-and-play GIS terminal type test device according to claim 1, characterized in that The bottom end of the connecting seat is detachably fixed to the top end of the bracket, and the top end of the connecting seat is detachably fixed to the bottom end of the vertical test cylinder. The connecting seat is provided with a through hole for the pluggable GIS terminal female head to pass through.

4. The plug-and-play GIS terminal type test device according to claim 1, characterized in that, The bracket includes a bracket body and a cable clamp. The bracket body is fixedly connected to the cable clamp. The cable clamp is located directly below the pluggable GIS terminal female head and is concentric with the pluggable GIS terminal female head. The cable clamp contacts the cable.

5. The plug-and-play GIS terminal type test device according to claim 4, characterized in that, The bracket body includes a steel structure frame, cross bars, diagonal braces, and ladder steps. The cross bars are arranged along the height direction of the steel structure frame to divide the steel structure frame into multiple layers. Diagonal braces are fixedly provided in each corresponding layer area of the steel structure frame. The ladder steps are fixedly connected to the cross bars. The cable clamp is fixed to the ladder steps.

6. The plug-and-play GIS terminal type test device according to claim 5, characterized in that, The bracket body further includes support channel steels and adjusting foot cups. The support channel steels are distributed around the bottom end of the steel structure frame. The support channel steels are fixedly connected to the bottom end of the steel structure frame. The adjusting foot cups are installed at the ends of the support channel steels that extend beyond the steel structure frame.

7. The plug-and-play GIS terminal type test device according to claim 5, characterized in that A top plate is provided on the top surface of the steel structure frame. The top plate is connected to the connecting seat.

8. A plug-and-play GIS terminal type test device according to claim 1, characterized in that There are multiple pluggable GIS terminal female heads. The ends of at least two pluggable GIS terminal female heads that enter the vertical test cylinder are connected by a rigid connection metal part, and the rigid connection metal part is located inside the vertical test cylinder. At least two pluggable GIS terminal female heads are detachably connected to the pluggable GIS terminal male head through a conductor plugging structure.

9. A plug-and-play GIS terminal type test device according to claim 1 or 8, characterized in that The pluggable GIS terminal female head includes an insulating sleeve and a petal contact assembly. The insulating sleeve passes through the connecting seat and enters the vertical test cylinder. The petal contact assembly is connected to the insulating sleeve. The pluggable GIS terminal male head includes a conductor plug, a stop sleeve, a stress cone, a cone support assembly, a tail pipe and a cable. The conductor plug is fixedly connected to the top end of the cable. The stop sleeve is screwed and fixed on the conductor plug. The tail pipe, the cone support assembly and the stress cone are sequentially sleeved on the cable. The conductor plug structure includes the plum blossom contact assembly and the conductor plug, and the plum blossom contact assembly and the conductor plug are detachably connected.

10. The plug-and-play GIS terminal type test device according to claim 1, characterized in that, A pressure ring is sleeved at the exposed end of the pluggable GIS terminal female head in the vertical test cylinder, and the pressure ring is detachably connected to the connecting seat. The pluggable GIS terminal male head is located below the exposed end of the pluggable GIS terminal female head in the vertical test cylinder and enters the inside of the pluggable GIS terminal female head, and is connected by plugging and unplugging through the conductor plug structure.

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