CN113009190B - Single-branch insulation pull rod test tool and test equipment for GIS - Google Patents
Single-branch insulation pull rod test tool and test equipment for GIS Download PDFInfo
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- CN113009190B CN113009190B CN201911320395.2A CN201911320395A CN113009190B CN 113009190 B CN113009190 B CN 113009190B CN 201911320395 A CN201911320395 A CN 201911320395A CN 113009190 B CN113009190 B CN 113009190B
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 238000009413 insulation Methods 0.000 title claims abstract description 38
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 230000003044 adaptive effect Effects 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000007704 transition Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 19
- 238000007789 sealing Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
- G01R1/0416—Connectors, terminals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention relates to a single-branch insulation pull rod test fixture for GIS and test equipment, wherein the single-branch insulation pull rod test fixture for GIS comprises: the two axial ends of the cylinder body are respectively provided with a high-pressure connecting seat and a low-pressure connecting seat; the high-voltage connecting seat is used for connecting the high-voltage output end of the pressing device and conducting connection with one end of the insulating pull rod; the low-voltage connecting seat is used for being grounded and connected with the other end of the insulating pull rod in a conductive manner; the test fixture further comprises a low-voltage adapter and a high-voltage adapter, wherein the low-voltage adapter is used for being connected to the low-voltage connecting seat in a conductive mode, and the high-voltage adapter is used for being connected to the high-voltage connecting seat in a conductive mode; one of the two adapter joints is provided with a stud or a threaded hole so as to be fixed on the corresponding low-voltage connecting seat or high-voltage connecting seat through the stud or the threaded hole; and the other of the two adapter is provided with an inserting structure, and the corresponding low-voltage connecting seat or high-voltage connecting seat is provided with an adapting inserting structure which is in inserting fit with the inserting structure.
Description
Technical Field
The invention relates to a single insulating pull rod test tool and test equipment for GIS.
Background
With the development of the power industry in China, gas insulated metal-enclosed switchgear (GIS) has increasingly wide application in power transmission networks, and plays a key role in the safe and stable operation and economic operation of power systems. The insulating pull rod is used as a key part in the GIS, and plays a role in importance. On the one hand, the insulating pull rod connects the movable part of the arc extinguishing chamber with an external mechanism, so that the insulating pull rod has certain mechanical strength, and the insulating pull rod can be completed in a laboratory. On the other hand, the insulating pull rod is connected with high and low electric potential, so that the insulating effect of the shell and the electrified part is achieved, and if the electrical performance of the insulating pull rod is insufficient, the operation safety of high-voltage equipment is seriously affected.
In order to ensure the reliability of the insulating pull rod, the electric performance of the insulating pull rod is tested in a factory besides the necessary mechanical performance test of the insulating pull rod. The Chinese patent publication No. CN103353574B discloses an insulation test device, which comprises a shell which is integrally cylindrical, wherein an upper cover plate is arranged at the top end of the shell, an insulation partition plate is arranged at the bottom end of the shell, a lower supporting seat is arranged in the middle of the insulation partition plate, a low-voltage shielding cover and an upper supporting seat positioned in the low-voltage shielding cover are arranged on the lower surface of the upper cover plate, a high-voltage shielding cover and a high-voltage contact conductor positioned in the high-voltage shielding cover are arranged on the lower supporting seat, and metal connecting sheets are arranged on the high-voltage contact conductor and the upper supporting seat.
The structure of the insulation test device is complex, and the shielding cover is arranged on the outer side of the insulation pull rod, so that the insulation pull rod and the metal connecting sheet are inconvenient to assemble and disassemble, and the detection efficiency of the insulation pull rod is affected.
Disclosure of Invention
The invention aims to provide a single insulating pull rod test fixture for a GIS, which solves the technical problem that the insulating pull rod in the prior art is inconvenient to assemble and disassemble; the invention also aims to provide single insulation pull rod test equipment for the GIS, which solves the technical problem that the insulation pull rod detection efficiency is affected due to inconvenient disassembly and assembly of the insulation pull rod in the prior art.
In order to achieve the above purpose, the technical scheme of the single insulation pull rod test tool for the GIS is as follows:
GIS is with experimental frock of single insulating pull rod includes: the cylinder is used for loading a single insulating pull rod to be tested, and the two axial ends of the cylinder are respectively provided with a high-voltage connecting seat and a low-voltage connecting seat; the high-voltage connecting seat is used for connecting the high-voltage output end of the pressing device and conducting connection with one end of the insulating pull rod; the low-voltage connecting seat is used for being grounded and connected with the other end of the insulating pull rod in a conductive manner; the single-branch insulation pull rod test tool for the GIS further comprises two adapters, wherein the two adapters are a low-voltage adapter and a high-voltage adapter respectively, the low-voltage adapter is used for being connected to the low-voltage connecting seat in a conductive mode, and the high-voltage adapter is used for being connected to the high-voltage connecting seat in a conductive mode; the two adapters are respectively provided with a pull rod connecting hole, and the pull rod connecting holes are penetrated by pins, so that the adapters are connected into pin holes at the corresponding ends of the insulating pull rods through the pins; one of the two adapter joints is provided with a stud or a threaded hole so as to be fixed on the corresponding low-voltage connecting seat or high-voltage connecting seat through the stud or the threaded hole; and the other of the two adapter is provided with an inserting structure, and the corresponding low-voltage connecting seat or high-voltage connecting seat is provided with an adapting inserting structure which is in inserting fit with the inserting structure.
The beneficial effects are that: through setting the low-voltage adapter and the high-voltage adapter, when the insulating pull rod is installed, two ends of the insulating pull rod are connected to the low-voltage adapter and the high-voltage adapter through pins respectively; because one of the low-voltage adapter and the high-voltage adapter is in threaded connection with one of the low-voltage connecting seat and the high-voltage connecting seat, the other one of the low-voltage adapter and the high-voltage connecting seat is assembled in an inserting mode, one of the adapter connected with the insulating pull rod is in threaded connection with one of the connecting seats, then the other adapter connected with the insulating pull rod is inserted into the other connecting seat, the connecting mode of the insulating pull rod is simpler, and the disassembly and the replacement are more convenient.
Further, the adaptation grafting structure is along the spliced eye of barrel axial extension, and the grafting structure is the direction spliced pole, spliced eye and direction spliced pole direction grafting cooperation, install the elastic component in the spliced eye, the elastic component is used for exerting the elastic force opposite with the grafting direction of direction spliced pole to the direction spliced pole.
The beneficial effects are that: through increasing the elastic component in the spliced eye, make the direction spliced pole cartridge behind the spliced eye, can be by elastic component elasticity roof pressure, guarantee the stability of direction spliced pole in the spliced eye, and then guarantee the stability of insulating pull rod.
Further, the high-voltage connecting seat is provided with the plug hole, the plug hole is a step hole and comprises a large-diameter section and a small-diameter section, the elastic piece is arranged in the small-diameter section, the guide plug post penetrates through the large-diameter section and is assembled in the small-diameter section in a guide way, and the large-diameter section is used for shielding the connection position of the insulation pull rod and the high-voltage adapter.
The beneficial effects are that: through designing the spliced eye as the step hole, make the major diameter section of spliced eye be used for the shielding insulating pull rod and high voltage adapter's hookup location need not to add high voltage shield cover structure alone again, has simplified the structure of high voltage connection seat.
Further, the hole bottom of the plug hole is provided with a screw through hole, the screw through hole is used for a screw to pass through so as to fix the high-voltage connecting seat, a stop step is formed at the transition position of the screw through hole and the plug hole, and a stop plate used for stopping and limiting the elastic piece is arranged at the stop step in the plug hole.
The beneficial effects are that: the high-pressure connecting seat is simpler in a screw fixing mode, and the stop plate is arranged in the stop step formed by the screw through hole and the inserting hole, so that the elastic piece can be better stopped and limited.
Further, the high-voltage adapter comprises a pull rod connector and a guide sleeve fixedly connected with the pull rod connector, the pull rod connector and the low-voltage adapter are identical in structure, and the guide sleeve forms the guide plug-in column.
The beneficial effects are that: the high-voltage adapter is split into the pull rod connector and the guide sleeve, so that the high-voltage adapter is convenient to process, and the pull rod connector and the low-voltage adapter are identical in structure, so that replacement can be performed, and the processing cost is reduced.
Further, the cylinder body comprises two cylinder body units which are arranged in a split mode along the front-back direction, and the connection position of the two cylinder body units corresponds to the position of the adaptive plug-in structure in the radial direction of the cylinder body.
The beneficial effects are that: the cylinder body is arranged into a split structure, and the connection positions of the two cylinder body units correspond to the positions of the adaptive plugging structure, so that the plugging position can be observed when the plugging structure is plugged with the adaptive plugging structure, and the plugging structure and the adaptive plugging structure are ensured to be plugged smoothly.
Further, the barrel has the end cover, the low pressure connecting seat includes end cover connecting plate, connects connecting plate and intermediate junction spare, and intermediate junction spare is connected between end cover connecting plate and joint connecting plate in order to form I shape structure, and the end cover connecting plate is fixed on the end cover, be equipped with double-screw bolt or screw hole on the low pressure adapter, the low pressure adapter passes through double-screw bolt or screw hole to be fixed on the joint connecting plate, still be equipped with the low pressure shield cover that is used for carrying out the shielding to the junction position of low pressure adapter and insulating pull rod on the joint connecting plate.
The beneficial effects are that: the low-voltage connecting seat is designed into an I-shaped structure, so that the low-voltage connecting seat is convenient to be connected with the cylinder end cover and the low-voltage adapter, and the low-voltage shielding cover is fixedly arranged on the connector connecting plate, so that the volume of the low-voltage shielding cover can be reduced, and the manufacturing cost of the low-voltage shielding cover is saved.
Furthermore, the space surrounded by the low-voltage shielding cover can be used for the low-voltage adapter to be inserted along the axial direction of the cylinder.
The beneficial effects are that: when the low-voltage adapter is assembled with the low-voltage connecting seat, the low-voltage shielding cover does not need to be disassembled, and the assembly efficiency of the insulating pull rod is improved.
Further, the elastic piece is a pressure spring.
The beneficial effects are that: the pressure spring is a standard component, is convenient to obtain and has lower cost.
In order to achieve the purpose, the technical scheme of the single insulation pull rod test equipment for the GIS is as follows:
single insulating pull rod test equipment for GIS includes pressure applying device and installs the experimental frock of single insulating pull rod for GIS on pressure applying device, the experimental frock of single insulating pull rod for GIS includes: the cylinder is used for loading a single insulating pull rod to be tested, and the two axial ends of the cylinder are respectively provided with a high-voltage connecting seat and a low-voltage connecting seat; the high-voltage connecting seat is used for connecting the high-voltage output end of the pressing device and conducting connection with one end of the insulating pull rod; the low-voltage connecting seat is used for being grounded and connected with the other end of the insulating pull rod in a conductive manner; the single-branch insulation pull rod test tool for the GIS further comprises two adapters, wherein the two adapters are a low-voltage adapter and a high-voltage adapter respectively, the low-voltage adapter is used for being connected to the low-voltage connecting seat in a conductive mode, and the high-voltage adapter is used for being connected to the high-voltage connecting seat in a conductive mode; the two adapters are respectively provided with a pull rod connecting hole, and the pull rod connecting holes are penetrated by pins, so that the adapters are connected into pin holes at the corresponding ends of the insulating pull rods through the pins; one of the two adapter joints is provided with a stud or a threaded hole so as to be fixed on the corresponding low-voltage connecting seat or high-voltage connecting seat through the stud or the threaded hole; and the other of the two adapter is provided with an inserting structure, and the corresponding low-voltage connecting seat or high-voltage connecting seat is provided with an adapting inserting structure which is in inserting fit with the inserting structure.
The beneficial effects are that: through setting the low-voltage adapter and the high-voltage adapter, when the insulating pull rod is installed, two ends of the insulating pull rod are connected to the low-voltage adapter and the high-voltage adapter through pins respectively; because one of the low-voltage adapter and the high-voltage adapter is in threaded connection with one of the low-voltage connecting seat and the high-voltage connecting seat, the other one of the low-voltage adapter and the high-voltage connecting seat is assembled in an inserting mode, one of the adapter connected with the insulating pull rod is in threaded connection with one of the connecting seats, then the other adapter connected with the insulating pull rod is inserted into the other connecting seat, the connecting mode of the insulating pull rod is simpler, and the disassembly and the replacement are more convenient.
Further, the adaptation grafting structure is along the spliced eye of barrel axial extension, and the grafting structure is the direction spliced pole, spliced eye and direction spliced pole direction grafting cooperation, install the elastic component in the spliced eye, the elastic component is used for exerting the elastic force opposite with the grafting direction of direction spliced pole to the direction spliced pole.
The beneficial effects are that: through increasing the elastic component in the spliced eye, make the direction spliced pole cartridge behind the spliced eye, can be by elastic component elasticity roof pressure, guarantee the stability of direction spliced pole in the spliced eye, and then guarantee the stability of insulating pull rod.
Further, the high-voltage connecting seat is provided with the plug hole, the plug hole is a step hole and comprises a large-diameter section and a small-diameter section, the elastic piece is arranged in the small-diameter section, the guide plug post penetrates through the large-diameter section and is assembled in the small-diameter section in a guide way, and the large-diameter section is used for shielding the connection position of the insulation pull rod and the high-voltage adapter.
The beneficial effects are that: through designing the spliced eye as the step hole, make the major diameter section of spliced eye be used for the shielding insulating pull rod and high voltage adapter's hookup location need not to add high voltage shield cover structure alone again, has simplified the structure of high voltage connection seat.
Further, the hole bottom of the plug hole is provided with a screw through hole, the screw through hole is used for a screw to pass through so as to fix the high-voltage connecting seat, a stop step is formed at the transition position of the screw through hole and the plug hole, and a stop plate used for stopping and limiting the elastic piece is arranged at the stop step in the plug hole.
The beneficial effects are that: the high-pressure connecting seat is simpler in a screw fixing mode, and the stop plate is arranged in the stop step formed by the screw through hole and the inserting hole, so that the elastic piece can be better stopped and limited.
Further, the high-voltage adapter comprises a pull rod connector and a guide sleeve fixedly connected with the pull rod connector, the pull rod connector and the low-voltage adapter are identical in structure, and the guide sleeve forms the guide plug-in column.
The beneficial effects are that: the high-voltage adapter is split into the pull rod connector and the guide sleeve, so that the high-voltage adapter is convenient to process, and the pull rod connector and the low-voltage adapter are identical in structure, so that replacement can be performed, and the processing cost is reduced.
Further, the cylinder body comprises two cylinder body units which are arranged in a split mode along the front-back direction, and the connection position of the two cylinder body units corresponds to the position of the adaptive plug-in structure in the radial direction of the cylinder body.
The beneficial effects are that: the cylinder body is arranged into a split structure, and the connection positions of the two cylinder body units correspond to the positions of the adaptive plugging structure, so that the plugging position can be observed when the plugging structure is plugged with the adaptive plugging structure, and the plugging structure and the adaptive plugging structure are ensured to be plugged smoothly.
Further, the barrel has the end cover, the low pressure connecting seat includes end cover connecting plate, connects connecting plate and intermediate junction spare, and intermediate junction spare is connected between end cover connecting plate and joint connecting plate in order to form I shape structure, and the end cover connecting plate is fixed on the end cover, be equipped with double-screw bolt or screw hole on the low pressure adapter, the low pressure adapter passes through double-screw bolt or screw hole to be fixed on the joint connecting plate, still be equipped with the low pressure shield cover that is used for carrying out the shielding to the junction position of low pressure adapter and insulating pull rod on the joint connecting plate.
The beneficial effects are that: the low-voltage connecting seat is designed into an I-shaped structure, so that the low-voltage connecting seat is convenient to be connected with the cylinder end cover and the low-voltage adapter, and the low-voltage shielding cover is fixedly arranged on the connector connecting plate, so that the volume of the low-voltage shielding cover can be reduced, and the manufacturing cost of the low-voltage shielding cover is saved.
Furthermore, the space surrounded by the low-voltage shielding cover can be used for the low-voltage adapter to be inserted along the axial direction of the cylinder.
The beneficial effects are that: when the low-voltage adapter is assembled with the low-voltage connecting seat, the low-voltage shielding cover does not need to be disassembled, and the assembly efficiency of the insulating pull rod is improved.
Further, the elastic piece is a pressure spring.
The beneficial effects are that: the pressure spring is a standard component, is convenient to obtain and has lower cost.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment 1 of a single insulated pull rod test apparatus for GIS according to the present invention;
FIG. 2 is a schematic structural diagram of a single insulated pull rod test fixture for the GIS in FIG. 1;
FIG. 3 is an enlarged view of FIG. 2 at A;
FIG. 4 is an enlarged view at B in FIG. 2;
in the figure: 101-a pressing device; 102-a single insulation pull rod test tool for GIS; 1-a cylinder unit; 2-flanges; 3-an air charging and discharging port; 4-pin shafts; 5-end caps; 6, connecting a plate of the end cover; 7-connecting plates; 8-connecting a joint connection plate; 9-a low-voltage adapter; 10-a low voltage shield; 11-an insulating pull rod; 12-a first screw; 13-an insulating basin; 14-a guide sleeve; 15-a compression spring; 16-stop plates; 17-a high-voltage connecting seat; 18-a second screw; 19-an adapter; 20-long holes; 21-a pull rod connector.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1 of the single insulated pull rod test apparatus for GIS of the present invention:
as shown in FIG. 1, the single insulated pull rod test equipment for GIS comprises a pressing device 101 and a single insulated pull rod test tool 102 for GIS arranged on the pressing device 101, and as shown in FIG. 2, the single insulated pull rod test tool 102 for GIS comprises a cylinder body, the cylinder body extends along the front-back direction, the rear end of the cylinder body is fixedly connected with an end cover 5 through a bolt, and the front end of the cylinder body is fixedly assembled on an insulating basin 13 of the pressing device. The inside low pressure connecting seat and the high pressure connecting seat that are equipped with of barrel, low pressure connecting seat and high pressure connecting seat along fore-and-aft direction interval arrangement to make insulating pull rod 11 install between two connecting seats. The low-voltage connecting seat is fixedly arranged on the end cover 5, the high-voltage connecting seat is fixedly assembled on the insulating basin 13, and a metal insert on the insulating basin 13 is connected with a high-voltage output end of the pressing device.
As shown in fig. 2 and 4, the low-voltage connector comprises a joint connection plate 8, an end cover connection plate 6, and an intermediate connection plate 7 connecting the joint connection plate 8 and the end cover connection plate 6, the intermediate connection plate 7 constituting an intermediate connection member. The joint connecting plate 8, the end cover connecting plate 6 and the connecting plate 7 are welded and formed and are in an I-shaped structure. It should be noted that the structure of the low-voltage connection base can be changed adaptively according to the needs.
Specifically, the end cover connecting plate 6 is fixedly mounted on the end cover 5 of the cylinder body through a screw, a threaded hole is formed in the joint connecting plate 8, a stud is arranged on the low-voltage adapter 9, the stud is in threaded connection with the threaded hole so as to realize the fixed connection of the low-voltage adapter 9 and the joint connecting plate 8, the front part of the low-voltage adapter 9 is of a U-shaped structure, pull rod connecting holes are formed in two parallel plates of the U-shaped structure, and the pin shaft 4 penetrates through the pull rod connecting holes and penetrating holes in the insulating pull rod 11 so as to realize the connection of the low-voltage adapter 9 and the rear end of the insulating pull rod 11. In other embodiments, the low-pressure adapter is provided with a threaded hole, the adapter connecting plate is provided with a stud, and the stud is in threaded connection with the threaded hole so as to realize the fixed connection between the low-pressure adapter and the adapter connecting plate.
The connector connecting plate 8 is further fixedly provided with a low-voltage shielding cover 10 for shielding the connection position of the low-voltage adapter 9 and the insulating pull rod 11, the low-voltage connecting seat is designed into an I-shaped structure, the low-voltage connecting seat is convenient to connect with the cylinder end cover 5 and the low-voltage adapter 9, the low-voltage shielding cover 10 is fixedly arranged on the connector connecting plate 8, the size of the low-voltage shielding cover 10 can be reduced, and the manufacturing cost of the low-voltage shielding cover 10 is saved.
In this embodiment, the space enclosed by the low-voltage shielding cover 10 can be used for the low-voltage adapter 9 to be inserted along the axial direction of the cylinder, so that the low-voltage shielding cover 10 does not need to be disassembled when the low-voltage adapter 9 is assembled with the connector connecting plate 8, and the assembly efficiency of the insulation pull rod 11 is improved. In other implementations, the low-voltage adapter is relatively large, and the low-voltage adapter cannot be axially inserted into the low-voltage shielding case from the cylinder body, and at this time, the low-voltage shielding case needs to be detached to fix the low-voltage adapter on the connector connecting plate.
As shown in fig. 2 and 3, the basin-type insulator 13 is fixedly provided with a adaptor 19, the high-voltage connection base 17 is fixed on the adaptor 19 through a screw, the adaptor 19 is arranged on the front side of the high-voltage connection base 17, and the plugging hole is arranged on the high-voltage connection base 17. Specifically, the adaptor 19 is provided with a long hole 20, the long hole 20 extends in the front-rear direction, and the adaptor 19 is fixedly assembled on the insulator 13 by the first screw 12 penetrating into the long hole 20.
The central position of the high-pressure connecting seat 17 is provided with a plug hole and a screw perforation which extend along the axial direction of the cylinder body, the plug hole forms a plug structure, the plug hole and the screw perforation are coaxially arranged, and the plug hole is positioned at the rear side of the screw perforation, namely, the screw perforation is positioned at the bottom of the plug hole. The second screw 18 is penetrated in the screw through hole to realize the fixed connection of the adapter 19 and the high-voltage connector 17, a step structure is arranged between the rear end of the screw through hole and the front end of the inserting hole, and a stop plate 16 is arranged at the step structure for stopping and limiting the pressure spring 15. It should be noted that the adaptor 19 and the high voltage connection 17 are both conductors.
In this embodiment, the front end of the insulation pull rod 11 is connected to a high-voltage adapter through a pin 4, the high-voltage adapter includes a pull rod connector 21 and a guide sleeve 14, the pull rod connector 21 is located at the rear side of the guide sleeve 14, and the pull rod connector 21 is in threaded connection with the guide sleeve 14. It should be noted that the structure of the pull rod connector 21 is the same as that of the low pressure adapter 9, and the guide sleeve 14 forms a guide plug post. A compression spring 15 is arranged between the guide sleeve 14 and the stop plate 16, and the compression spring 15 is used for applying elastic acting force to the guide sleeve 14 opposite to the insertion direction of the guide sleeve 14 so as to ensure the stability of the guide sleeve 14. The compression spring 15 constitutes an elastic element. Of course, in other embodiments, the elastic member may be a rubber block; the spring plate can also be a leaf spring with a sheet-shaped bending structure, such as a spring plate bent into a V shape. It should be noted that the high-voltage adapter, the compression spring 15, and the stopper plate 16 are all electric conductors.
In this embodiment, the insertion hole is a step hole, and the insertion hole includes a large-diameter section and a small-diameter section, and the large-diameter section is located at the front side of the small-diameter section. The pressure spring 15 is arranged in the small-diameter section, the front end of the small-diameter section and the rear end of the screw perforation form the step structure, a gap is reserved between the large-diameter section and the pull rod connector 21 along the radial direction of the cylinder, and the large-diameter section is used as a high-voltage shielding cover to shield the connection position of the insulating pull rod 11 and the high-voltage adapter.
As shown in fig. 2, the cylinder body comprises two cylinder body units 1 which are arranged in a split manner along the front-rear direction, the connection positions of the two cylinder body units 1 correspond to the hole openings of the plug holes in the radial direction of the cylinder body, the cylinder body is arranged into a split structure, and the connection positions of the two cylinder body units correspond to the hole openings of the plug holes, so that the positions of the high-voltage adapter can be observed when the high-voltage adapter is inserted into the plug holes, and the high-voltage adapter can be ensured to be smoothly inserted into the plug holes. Specifically, the flange 2 is arranged at the opposite ends of the two barrel units 1, the two barrel units 1 are fixedly connected through the flange 2 in a sealing manner to form a barrel, and the flange 2 is arranged at the butt end of the two barrel units 1, so that the connection of the two barrel units 1 is facilitated, and the flange 2 is also beneficial to the sealing of the two barrel units 1. In other embodiments, a hoop may be disposed at a position where the two barrel units are connected, and a sealing member is disposed on an inner side surface of the hoop, so as to realize sealing and fixing connection of the two barrel units.
In this embodiment, one of the cylinder units 1 is provided with an inflation/deflation port 3 for inflating the inside of the cylinder and deflating the outside of the cylinder.
The single insulation pull rod test equipment for the GIS in the embodiment is used for the electrical test of the single insulation pull rod. During assembly, the adapter 19 is firstly installed on the insulating basin 13, the high-voltage connecting seat 17 is installed on the adapter 19, the front barrel unit 1 is fixedly assembled on the insulating basin 13 through bolts, and then the stop plate 16 and the pressure spring 15 are sequentially placed in the inserting holes. The end cover 5 is provided with a low-voltage connecting seat, the low-voltage shielding cover 10 is arranged on the joint connecting plate 8, the rear end of the insulating pull rod 11 is fixed on the low-voltage adapter 9 through the pin shaft 4, the front end of the insulating pull rod 11 is fixedly connected on the high-voltage adapter through the pin shaft 4, the low-voltage adapter 9 is in threaded connection on the joint connecting plate 8, and then the rear barrel unit 1 is fixedly assembled on the end cover 5. Finally, the rear cylinder unit 1 and the front cylinder unit 1 are fixedly assembled in a sealing way through the flange 2, in the process, the high-voltage adapter is aligned with the inserting hole on the high-voltage connecting seat 17 and is inserted into the inserting hole, and the pressure spring 15 is arranged in the inserting hole and can be propped against the high-voltage adapter to ensure the stability of the high-voltage adapter. After the assembly is completed, the insulating basin 13 is fixedly assembled to the pressing device 102 by bolts to perform an insulation test of the insulating tie rod 11.
It should be noted that, in this embodiment, the insulating basin 13 is a part of the pressing device 102, the insulating basin 13 may be removed from the pressing device 102, then the GIS is mounted on the insulating basin 13 by using the single insulating pull rod test fixture 101, and finally the insulating basin 13 and the single insulating pull rod test fixture are assembled together on the pressing device 102; the insulating basin 13 can also be directly assembled on the insulating basin 13 by using the single insulating pull rod test fixture 101 for GIS without removing the insulating basin 13 from the pressing device 102. Wherein the pressure applicator 102 is conventional. In other embodiments, the GIS single insulated pull rod test fixture may include an insulating cover plate, such as an insulating basin, disposed at one end of the cylinder, so that the cylinder of the GIS single insulated pull rod test fixture forms a closed structure, and a cable or a conductive bar is led out from the insulating cover plate to be electrically connected with the pressing device.
The single insulating pull rod test tool for the GIS has the advantages of less number of parts, simplicity and convenience in installation and short gas treatment period, solves the problem that the in-factory test of the pull rod can only be performed on products to a great extent, accurately tests the quality of the pull rod, prevents the occurrence of discharge accidents in the state of subsequent products, and provides a guarantee for the quality of the products.
Example 2 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that the low-pressure adapter is assembled with the low-pressure connecting seat in a plugging manner, and the high-pressure adapter is connected with the high-pressure connecting seat in a threaded manner. In this case, the front end of the insulating rod needs to be fixed to the high-voltage adapter.
Example 3 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that in the case that the gap between the high-voltage adapter and the plug hole along the radial direction of the cylinder is smaller, the compression spring is not required, and the contact finger is arranged on one of the high-voltage adapter and the plug hole, so as to ensure the contact stability of the high-voltage adapter and the high-voltage connecting seat.
Example 4 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that the plugging hole has the same aperture size in the front-rear direction, and a separate high-voltage shielding cover needs to be arranged on the outer side of the mounting seat to shield the front end of the insulating pull rod.
Example 5 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that the high voltage connection base is of an integral structure, and in order to facilitate the fixation of the high voltage connection base on the insulator, a flange may be disposed on the high voltage connection base, and the high voltage connection base is fixedly connected on the basin-type insulator through the flange. At this time, screw perforation is not required to be arranged on the high-voltage connecting seat.
Example 6 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that a stop plate may not be provided in the insertion hole, and at this time, the front end of the compression spring is pressed against the step of the screw hole, and a longer compression spring is required to meet the elastic pressing requirement. Of course, in other embodiments, a stop plate may not be provided in the socket, where a larger diameter of the compression spring is required.
Example 7 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that the high-voltage adapter is of unitary construction.
Example 8 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that the cylinder is of an integral structure, and a hand hole can be arranged on the cylinder at this time so as to observe the plugging condition of the high-voltage adapter and the plugging hole. In other embodiments, the cylinder body can be of an integrated structure, no hand hole is formed in the cylinder body at the moment, under the condition that machining precision is met, the two cylinder body units are aligned first, and at the moment, the positions of the high-voltage adapter at the front end of the insulating pull rod and the plug hole are correct, so that the plug assembly of the high-voltage adapter and the plug hole can be realized under the condition that observation is not performed.
Example 9 of the single insulated pull rod test apparatus for GIS of the present invention:
the difference from embodiment 1 is that the rear end of the low voltage shield is fixedly fitted to the end cap, in which case the size of the low voltage shield is large.
The specific embodiment of the single insulated pull rod test tool for GIS in the present embodiment of the present invention has the same structure as the single insulated pull rod test tool for GIS described in any one of embodiments 1 to 9 of the single insulated pull rod test device for GIS, and is not described herein.
Claims (10)
1, GIS is with experimental frock of single insulating pull rod, include:
the cylinder is used for loading a single insulating pull rod to be tested, and the two axial ends of the cylinder are respectively provided with a high-voltage connecting seat and a low-voltage connecting seat;
the high-voltage connecting seat is used for connecting the high-voltage output end of the pressing device and conducting connection with one end of the insulating pull rod;
the low-voltage connecting seat is used for being grounded and connected with the other end of the insulating pull rod in a conductive manner;
the single insulation pull rod test fixture for the GIS is characterized by further comprising two adapters, wherein the two adapters are a low-voltage adapter and a high-voltage adapter respectively, the low-voltage adapter is used for being connected to a low-voltage connecting seat in a conductive mode, and the high-voltage adapter is used for being connected to a high-voltage connecting seat in a conductive mode;
the two adapters are respectively provided with a pull rod connecting hole, and the pull rod connecting holes are penetrated by pins, so that the adapters are connected into pin holes at the corresponding ends of the insulating pull rods through the pins;
one of the two adapter joints is provided with a stud or a threaded hole so as to be fixed on the corresponding low-voltage connecting seat or high-voltage connecting seat through the stud or the threaded hole;
and the other of the two adapter is provided with an inserting structure, and the corresponding low-voltage connecting seat or high-voltage connecting seat is provided with an adapting inserting structure which is in inserting fit with the inserting structure.
2. The single-insulation pull rod test fixture for the GIS according to claim 1, wherein the adaptive plugging structure is a plugging hole extending along the axial direction of the cylinder, the plugging structure is a guiding plugging column, the plugging hole is in guiding plugging fit with the guiding plugging column, an elastic piece is arranged in the plugging hole, and the elastic piece is used for applying an elastic acting force to the guiding plugging column, wherein the elastic acting force is opposite to the plugging direction of the guiding plugging column.
3. The single-insulation pull rod test fixture for the GIS according to claim 2, wherein the high-voltage connecting seat is provided with the plug hole, the plug hole is a step hole and comprises a large-diameter section and a small-diameter section, the elastic piece is arranged in the small-diameter section, the guide plug post penetrates through the large-diameter section and is assembled in the small-diameter section in a guide manner, and the large-diameter section is used for shielding the connection position of the insulation pull rod and the high-voltage adapter.
4. The single-insulation pull rod test fixture for the GIS according to claim 2, wherein a screw through hole is formed in the hole bottom of the plug hole, the screw through hole is used for allowing a screw to pass through so as to fix the high-voltage connecting seat, a stop step is formed at the transition position of the screw through hole and the plug hole, and a stop plate used for stopping and limiting the elastic piece is arranged in the plug hole at the stop step.
5. The single-insulation pull rod test fixture for the GIS according to claim 3 or 4, wherein the high-voltage adapter comprises a pull rod connector and a guide sleeve fixedly connected with the pull rod connector, the pull rod connector and the low-voltage adapter are identical in structure, and the guide sleeve forms the guide plug-in column.
6. The GIS single insulation pull rod test fixture according to any one of claims 1 to 4, wherein the cylinder comprises two cylinder units which are separately arranged along the front-rear direction, and the connection position of the two cylinder units corresponds to the position of the adaptive plug structure in the radial direction of the cylinder.
7. The single-insulated pull rod test fixture for the GIS according to any one of claims 1 to 4, wherein the cylinder body is provided with an end cover, the low-voltage connecting seat comprises an end cover connecting plate, a joint connecting plate and an intermediate connecting piece, the intermediate connecting piece is connected between the end cover connecting plate and the joint connecting plate to form an i-shaped structure, the end cover connecting plate is fixed on the end cover, a stud or a threaded hole is arranged on the low-voltage adapter, the low-voltage adapter is fixed on the joint connecting plate through the stud or the threaded hole, and a low-voltage shielding cover for shielding the connection position of the low-voltage adapter and the insulated pull rod is further arranged on the joint connecting plate.
8. The single-insulation pull rod test fixture for the GIS according to claim 7, wherein a space enclosed by the low-voltage shielding cover can be used for inserting the low-voltage adapter along the axial direction of the cylinder.
9. The GIS single insulated pull rod test fixture according to any one of claims 2-4, wherein the elastic member is a compression spring.
The single-insulation pull rod test equipment for the GIS comprises a pressing device and a single-insulation pull rod test tool for the GIS, wherein the single-insulation pull rod test tool for the GIS is installed on the pressing device, and is characterized in that the single-insulation pull rod test tool for the GIS is as claimed in any one of claims 1-9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320395.2A CN113009190B (en) | 2019-12-19 | 2019-12-19 | Single-branch insulation pull rod test tool and test equipment for GIS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911320395.2A CN113009190B (en) | 2019-12-19 | 2019-12-19 | Single-branch insulation pull rod test tool and test equipment for GIS |
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| CN113009190A CN113009190A (en) | 2021-06-22 |
| CN113009190B true CN113009190B (en) | 2024-04-05 |
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| CN201911320395.2A Active CN113009190B (en) | 2019-12-19 | 2019-12-19 | Single-branch insulation pull rod test tool and test equipment for GIS |
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| CN113009190A (en) | 2021-06-22 |
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