CN107831424B - Be used for GIS interval withstand voltage test testing arrangement - Google Patents
Be used for GIS interval withstand voltage test testing arrangement Download PDFInfo
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- CN107831424B CN107831424B CN201711205210.4A CN201711205210A CN107831424B CN 107831424 B CN107831424 B CN 107831424B CN 201711205210 A CN201711205210 A CN 201711205210A CN 107831424 B CN107831424 B CN 107831424B
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- 238000012360 testing method Methods 0.000 title claims abstract description 60
- 239000012212 insulator Substances 0.000 claims abstract description 62
- 239000002184 metal Substances 0.000 claims description 37
- 230000007704 transition Effects 0.000 claims description 20
- 239000004020 conductor Substances 0.000 claims description 19
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000722921 Tulipa gesneriana Species 0.000 description 2
- 208000025274 Lightning injury Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
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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
- G01R31/1227—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 of components, parts or materials
- G01R31/1254—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 of components, parts or materials of gas-insulated power appliances or vacuum gaps
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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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- Testing Electric Properties And Detecting Electric Faults (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a testing device for a GIS interval withstand voltage test, which comprises a closed shell, an outlet sleeve, a first conducting rod, a moving end rotating device, a moving end supporting device and a basin-type insulator, wherein the closed shell is arranged on the first conducting rod; the movable end supporting device is arranged at the right end of the closed shell, and the basin-type insulator is arranged at the left end of the closed shell; the wire outlet sleeve is arranged at the outer side of the upper end of the closed shell, the first conductive rod is arranged in the wire outlet sleeve, and the first conductive rod extends into the closed shell and is electrically connected with the movable end supporting device; the movable end rotating device comprises a supporting rotating shaft, an insulating pull rod, a conductive rotating shaft, a rotating seat, a rotating disc, a movable contact conductive rod and a grounding contact device; the invention improves the test efficiency of a withstand voltage test, avoids misoperation and improves safety.
Description
Technical Field
The invention relates to a testing device for a GIS interval withstand voltage test.
Background
The GAS-insulated metal-enclosed switchgear (GIS, GAS insulated SWITCHGEAR), namely a GAS-insulated fully-enclosed combined electrical apparatus, is composed of a circuit breaker, a disconnecting switch, a grounding switch, a transformer, a lightning arrester, a bus, a connecting piece, an outgoing terminal and the like, all of which are enclosed in a metal-grounded shell, and SF6 insulating GAS with certain pressure is filled in the metal-grounded shell, so that the GAS-insulated fully-enclosed combined electrical apparatus is also called SF6 fully-enclosed combined electrical apparatus. GIS not only is widely applied in high voltage and ultrahigh voltage fields, but also is used in ultrahigh voltage fields, and compared with a conventional open type transformer substation, GIS has the advantages of compact structure, small occupied area, high reliability, flexible configuration, convenient installation, strong safety, strong environment adaptability and small maintenance workload.
Each element in the GIS can be ensured to be safe and stable only by requiring a certain insulating strength, so that the GIS before delivery after assembly is subjected to pressure resistance test is an indispensable procedure. The patent 201320024694.3 discloses an auxiliary device for a withstand voltage test, which comprises a closed shell, three grounding devices, three propelling devices, a phase-change device and a wire outlet sleeve, wherein the three grounding devices are respectively arranged on the inner side of the upper end of the closed shell, one grounding device is correspondingly provided with one propelling device, and the propelling devices are arranged on the outer side of the closed shell and act on the grounding devices to enable the grounding devices to be grounded; the phase-change device comprises a moving contact, a transmission shaft and a phase-change conductor, wherein the transmission shaft is arranged on the outer side of the closed shell and is in linkage connection with the moving contact, the moving contact is arranged on the inner side of the lower end of the closed shell through an insulating support column, the phase-change conductor is arranged on the grounding device, and the moving contact is respectively in conduction connection with the phase-change conductor arranged on the grounding device in a rotating state; the outlet sleeve is arranged on the outer side of the airtight shell and is provided with a conducting rod which is connected with the movable contact. The auxiliary device testing process is as follows: the airtight shell is filled with and protected with other SF 6 The GIS is hoisted at the upper end of the airtight shell, three phases of the GIS are respectively connected with three grounding devices, a conducting rod of an outgoing line sleeve is connected with high-voltage test equipment, when one phase of the GIS is tested, a moving contact is conducted with a phase-changing conductor, an annular conductor is conducted with the phase of the GIS through the grounding devices, at the moment, a propelling device enables the grounding devices to be separated from contact with the ground, and the other two grounding devices are grounded, so that a withstand voltage test is performedAfter one phase is tested, the rotating shaft drives the moving contact to rotate, so that the moving contact is communicated with the other phase-change conductor, at the moment, the propelling device enables the grounding device to be separated from contact with the ground, and the other two phases of grounding devices are connected with the ground to conduct a withstand voltage test. It can be seen that in order to maintain two phases of grounding in the voltage withstand test, two steps of operation are required in each test, the moving contact and the phase change conductor are conducted by rotating the rotating transmission shaft, and then one grounding device is separated from the ground by rotating the rotating screw of the pushing device.
Accordingly, the present inventors have particularly developed a test apparatus for GIS interval withstand voltage test that is safer and simpler to operate.
Disclosure of Invention
The invention aims to provide a GIS interval withstand voltage test device, which is used for improving the operation convenience of the withstand voltage test, avoiding misoperation and improving safety.
In order to achieve the above object, the technical scheme of the present invention is as follows:
the testing device comprises a closed shell, an outlet sleeve, a first conducting rod, a movable end rotating device, a movable end supporting device and a basin-type insulator;
the movable end supporting device is arranged at the right end of the airtight shell and seals the right end of the airtight shell, and the basin-type insulator is arranged at the left end of the airtight shell and seals the left end of the airtight shell; the wire outlet sleeve is arranged at the outer side of the upper end of the closed shell, the first conductive rod is arranged in the wire outlet sleeve, and the first conductive rod extends into the closed shell and is electrically connected with the movable end supporting device;
the movable end rotating device comprises a supporting rotating shaft, an insulating pull rod, a conductive rotating shaft, a rotating seat, a rotating disc, a movable contact conductive rod and a grounding contact device; the support rotating shaft is rotatably arranged at the right end of the movable end supporting device in a penetrating manner, the right end of the support rotating shaft extends out of the right end of the closed shell, the left end of the support rotating shaft is connected with the right end of the insulating pull rod arranged in the movable end supporting device, the conductive rotating seat is fixed at the left end of the movable end supporting device and is electrically connected with the first conductive rod through the movable end supporting device, the conductive rotating shaft is rotatably arranged on the rotating seat in a penetrating manner, the left end of the insulating pull rod is connected with the right end of the conductive rotating shaft, and the left end of the conductive rotating shaft is connected with the rotary table;
the rotary table is provided with a movable contact conducting rod and two grounding contact devices at equal intervals corresponding to three metal accessories of the basin-type insulator, the grounding contact devices comprise an insulating pull rod, a grounding contact seat, a grounding movable contact and a grounding fixed contact, wherein the right end of the insulating pull rod of the grounding contact device is fixed on the rotary table, the grounding contact seat is arranged at the left end of the insulating pull rod of the grounding contact device, the grounding movable contact is arranged at the side part of the grounding contact seat, the grounding movable contact is contacted with the inner side of the airtight shell to be grounded, the grounding fixed contact is arranged at the left end part of the grounding contact seat, and the grounding fixed contact is electrically contacted with the left side of one metal accessory of the basin-type insulator; the right end of the moving contact conducting rod is fixed on the turntable, and the left end of the moving contact conducting rod is in electrical contact with the left side of one of the metal accessories of the basin-type insulator.
The test device also comprises a transition short pipe, and the transition short pipe is fixedly connected to the left side of the basin-type insulator; the quincuncial contact device is arranged on the left side of the basin-type insulator metal accessory and consists of a quincuncial contact, a contact seat, a contact conductor, a guide rod and a contact shielding cover, wherein the guide rod is fixedly arranged in the middle of the contact seat, the quincuncial contact is sleeved at one end of the contact seat, the contact conductor is fixed at the other end of the contact seat, and the contact shielding cover is sleeved on the quincuncial contact and the contact conductor.
The movable end supporting device comprises a cover plate, a supporting insulating sleeve, a supporting seat, a shielding cover and a conductive seat, wherein the cover plate is arranged at the right end of the airtight shell and seals the right end of the airtight shell, a supporting shaft hole is formed in the cover plate, and the supporting rotating shaft penetrates through the supporting shaft hole; the support insulating sleeve is arranged in the airtight shell, the right end of the support insulating sleeve is fixedly connected to the cover plate, the support seat is fixedly connected to the left end of the support insulating sleeve, the shielding cover is sleeved on the support seat, the conductive seat is fixed on the outer side of the upper end of the support seat, the first conductive rod is inserted on the conductive seat, the rotating seat is fixedly arranged at the left end of the support seat, and the insulating pull rod of the moving end rotating device penetrates through the support insulating sleeve.
The movable end rotating device further comprises an insulating rotating handle and an indicating rod, wherein the insulating rotating handle and the indicating rod are arranged on the right side of the closed shell and are arranged at the right end of the supporting rotating shaft, and a positioning rod for limiting the rotation of the indicating rod is arranged at the position, corresponding to the position of the three metal accessories of the basin-type insulator, of the outer side of the cover plate.
The right end of the supporting insulating sleeve is fixedly connected with the cover plate by a flange.
The insulating pull rod of the movable end rotating device is connected with the conductive rotating shaft by virtue of a pin shaft.
The rotary seat is provided with a shaft hole, a bearing and a spring contact finger are arranged in the shaft hole, the conductive rotary shaft penetrates through the shaft hole of the rotary seat by means of the bearing and the spring contact finger, and a retainer ring for blocking the bearing on the rotary seat from sliding is fixedly arranged on the conductive rotary shaft.
The movable contact conducting rod consists of a second conducting rod, a conducting connector arranged at the tail part of the second conducting rod and a conducting movable contact arranged at the head part of the second conducting rod, wherein the conducting connector is fixedly connected to the turntable, and the conducting movable contact is in electric contact with the left side of one metal accessory of the basin-type insulator.
The right side of the basin-type insulator metal accessory is provided with a fixed end contact device for electrically contacting with a grounding moving contact and a moving contact conducting rod, and the fixed end contact device consists of a commutation transition joint fixedly connected with the metal accessory and a fixed end contact arranged on the commutation transition joint.
Three insulating contacts are arranged at equal intervals on the inner side of the closed shell corresponding to the directions of three metal accessories of the basin-type insulator and corresponding to a moving contact conducting rod and two grounding contact devices, and the included angle between every two adjacent insulating contacts is 120 degrees.
After the scheme is adopted, when the invention is used for pressure test, the airtight shell is fully filled with protectionGas SF 6 The three phases of the gas-insulated metal-enclosed switchgear are connected with three accessories on the left side of the basin-type insulator, a first conducting rod in a wire outlet sleeve is connected with high-voltage test equipment, when one phase of a GIS is tested, the gas-insulated metal-enclosed switchgear drives an insulating pull rod, a conducting rotating shaft and a rotating disc to rotate by operating a supporting rotating shaft outside the sealed shell, a moving contact conducting rod arranged on the rotating disc is electrically connected with one metal accessory of the basin-type insulator, the first conducting rod sequentially inputs high-voltage electricity (a lightning strike electricity 1050kv, a lightning strike frequency 460 kv) to the corresponding phase of the basin-type insulator through a moving end supporting device, the conducting rotating shaft, the rotating disc moving contact conducting rod and the metal accessory of the basin-type insulator, and two grounding contact devices are grounded through the grounding fixed contact to the metal accessory of the basin-type insulator, so that single-phase voltage withstanding test is realized; after the test is finished, the supporting rotating shaft is rotated again, the movable contact conducting rod on the turntable is switched to the other metal accessory of the basin-type insulator, so that one phase of the GIS, which is in contact with the metal accessory, is conducted, the other two phases of the GIS are not conducted, after the second-phase withstand voltage test is finished, the supporting rotating shaft is only required to be rotated once again, and the movable contact conducting rod is in electrical contact with the last untested phase, so that the three-phase test can be finished.
The invention has the beneficial effects that:
1. according to the invention, the GIS three-phase voltage withstand test can be completed only by rotating the supporting rotating shaft for at most three times, and only one phase needs to be rotated in place once when switching, so that the operation is simple and quick, and the voltage withstand test efficiency is improved;
2. according to the invention, the moving contact guide rods and the two grounding contact devices are arranged at intervals (equal intervals) corresponding to the positions of the three accessories of the basin-type insulator, so that the positions of the three contacts (namely, the moving contact guide rods and the two grounding contact devices) on the turntable are relatively fixed, the moving contact guide rods and the two grounding contact devices are not influenced by each other, and the moving contact guide rods and the two grounding contact devices can be accurately positioned, so that misoperation is avoided, the purpose of electric contact stability is achieved, and the stability of a testing process is improved.
The invention is further described below with reference to the drawings and detailed description.
Drawings
FIG. 1 is a cross-sectional view of the overall structure of the present invention;
FIGS. 2 and 3 are perspective views showing the assembly of the moving end rotating device and the moving end supporting device according to the present invention;
FIG. 4 is a front view of a partial structure of the present invention;
FIG. 5 is a top view of a partial structure of the present invention;
FIG. 6 is a bottom view of a partial structure of the present invention;
FIG. 7 is a cross-sectional view of the moving end turning device and the moving end supporting device of the present invention;
FIG. 8 is a cross-sectional view of the hermetic shell of the present invention;
fig. 9 is a cross-sectional view of a basin-type insulator of the present invention;
FIG. 10 is a cross-sectional view of a transition piece of the present invention;
fig. 11 is a cross-sectional view of a tulip contact device of the present invention;
FIG. 12 is a cross-sectional view of the stationary end contact apparatus of the present invention;
FIG. 13 is a cross-sectional view of a GIS basin insulator connected to the present invention;
FIG. 14 is a schematic diagram of a GIS scheme for testing non-basin insulators according to the present invention;
FIG. 15 is a schematic view of a convex side scheme of the GIS basin insulator of the present invention;
fig. 16 is a schematic view of a concave side scheme of the GIS basin insulator of the present invention.
Description of the reference numerals
The device comprises a closed shell 1, an outgoing line sleeve 2, a first conducting rod 3, a moving end rotating device 4, a supporting rotating shaft 41, an insulating pull rod 42, a conducting rotating shaft 43, a rotating seat 44, a rotating disc 45, a moving contact conducting rod 46, a grounding contact device 47, an insulating pull rod 471, a grounding contact seat 472, a grounding moving contact 473, a grounding fixed contact 474, an insulating rotating handle 48, an indicating rod 49, a moving end supporting device 5, a cover plate 51, a supporting shaft hole 511, a supporting insulating sleeve 52, a supporting seat 53, a shielding cover 54, a conducting seat 55, a basin-type insulator 6, a metal accessory 61, a fixed end contact device 62, a commutation transition joint 621, a fixed end contact 622, a GIS basin-type insulator 7, a transition short tube 8, a plum blossom contact device 9, a plum blossom contact 91, a contact seat 92, a contact conductor 93, a guide rod 94, a contact shielding cover 95, a pin 10, a bearing 11, a spring contact 12 and a flange 13.
Description of the embodiments
As shown in fig. 1-13, the invention discloses a testing device for a GIS interval withstand voltage test, which comprises a closed shell 1, an outlet sleeve 2, a first conducting rod 3, a movable end rotating device 4, a movable end supporting device 5 and a basin-type insulator 6;
the movable end supporting device 5 is arranged at the right end of the closed shell 1 and seals the right end of the closed shell 1, and the basin-type insulator 6 is arranged at the left end of the closed shell 1 and seals the left end of the closed shell 1; the wire outlet sleeve 2 is arranged at the outer side of the upper end of the closed shell 1, the first conducting rod 3 is arranged in the wire outlet sleeve, and the first conducting rod 3 extends into the closed shell 1 and is electrically connected with the movable end supporting device 5;
the moving end rotating device 4 comprises a supporting rotating shaft 41, an insulating pull rod 42, a conductive rotating shaft 43, a rotating seat 44, a turntable 45, a moving contact conductive rod 46 and a grounding contact device 47; the supporting rotating shaft 41 is rotatably arranged at the right end of the moving end supporting device 5 in a penetrating way, the right end of the supporting rotating shaft 41 extends out of the right end of the closed shell 1, the left end of the supporting rotating shaft 41 is connected with the right end of the insulating pull rod 42 arranged in the moving end supporting device 5, the conductive rotating seat 44 is fixed at the left end of the moving end supporting device 5 and is electrically connected with the first conductive rod 3 through the moving end supporting device 5, the conductive rotating shaft 43 is rotatably arranged in the rotating seat 44 in a penetrating way, the left end of the insulating pull rod 42 is connected with the right end of the conductive rotating shaft 43, and the left end of the conductive rotating shaft 43 is connected with the turntable 45;
the rotary table 45 is provided with a movable contact conducting rod 46 and two grounding contact devices 47 at equal intervals corresponding to three metal accessories 61 of the basin-type insulator 6, the grounding contact devices 47 comprise an insulating pull rod 471, a grounding contact seat 472, a grounding movable contact 473 and a grounding fixed contact 474, wherein the right end of the insulating pull rod 471 of the grounding contact devices 47 is fixed on the rotary table 45, the grounding contact seat 472 is arranged at the left end of the insulating pull rod 471 of the grounding contact devices, the grounding movable contact 473 is arranged at the side part of the grounding contact seat 472, the grounding movable contact 473 is grounded by being contacted with the inner side of the closed shell 1, the grounding fixed contact 474 is arranged at the left end part of the grounding contact seat 472, and the grounding fixed contact 474 is electrically contacted with the left side of one metal accessory 61 of the basin-type insulator 6; the right end of the movable contact conducting rod 46 is fixed on the rotary table 45, and the left end of the movable contact conducting rod 46 is in electrical contact with the left side of one of the metal accessories 61 of the basin-type insulator 6.
The movable end supporting device 5 comprises a cover plate 51, a supporting insulating sleeve 52, a supporting seat 53, a shielding cover 54 and a conductive seat 55, wherein the cover plate 51 is arranged at the right end of the airtight shell 1 and seals the right end of the airtight shell 1, a supporting shaft hole 511 is formed in the cover plate 51, and the supporting rotating shaft 41 penetrates through the supporting shaft hole 511; the supporting insulation sleeve 52 is arranged in the airtight shell 1, the right end of the supporting insulation sleeve is fixedly connected with the cover plate 51 by means of a flange 13, the supporting seat 53 is fixedly connected with the left end of the supporting insulation sleeve 52, the shielding cover 54 is arranged on the supporting seat 53, the conducting seat 55 is fixed on the outer side of the upper end of the supporting seat 53, the first conducting rod 3 is inserted into the conducting seat 55, the rotating seat 44 is fixedly arranged at the left end of the supporting seat 53, and the insulation pull rod 42 of the moving end rotating device penetrates through the supporting insulation sleeve 52. In order to facilitate the operation of the moving-end rotating device 4 to rotate, the moving-end rotating device further comprises an insulating rotating handle 48 and an indicating rod 49, wherein the insulating rotating handle 48 and the indicating rod 49 are arranged on the right side of the closed shell 1 and are arranged at the right end of the supporting rotating shaft 41, and a positioning rod 56 for limiting the rotation of the indicating rod 49 is arranged on the outer side of the cover plate 51 and corresponds to the three metal accessories 61 of the basin-type insulator 6.
Further, the testing device also comprises a transition short pipe 8, and the transition short pipe 8 is fixedly connected to the left side of the basin-type insulator 6; the plum blossom contact device 9 is arranged on the left side of the basin-shaped insulator metal accessory 61, the plum blossom contact device 9 consists of a plum blossom contact 91, a contact seat 92, a contact conductor 93, a guide rod 94 and a contact shielding cover 95, the guide rod 94 is fixedly arranged in the middle of the contact seat 92, the plum blossom contact 91 is sleeved at one end of the contact seat, the contact conductor 93 is fixed at the other end of the contact seat 92, and the contact shielding cover 95 is sleeved on the plum blossom contact 91 and the contact conductor 93.
Further, the left end of the insulating pull rod 42 and the right end of the conductive rotating shaft 43 of the moving end rotating device are provided with pin holes, and the insulating pull rod is connected with the conductive rotating shaft by virtue of the pin shaft 10.
Further, the rotating seat 44 is provided with a shaft hole 441, a bearing 11 and a spring contact finger 12 are arranged in the shaft hole, the conductive rotating shaft 43 penetrates through the shaft hole 441 of the rotating seat by means of the bearing 11 and the spring contact finger 12, and the conductive rotating shaft 43 is further fixedly provided with a retainer ring 13 for blocking the bearing on the rotating seat from sliding.
Further, the moving contact conductive rod 46 is composed of a second conductive rod 461, a conductive connector 462 arranged at the tail of the second conductive rod, and a conductive moving contact 463 arranged at the head of the second conductive rod 461, wherein the conductive connector 462 is fixedly connected to the turntable 45, and the conductive moving contact 463 is electrically contacted with the left side of one of the metal accessories 61 of the basin-type insulator 6.
As shown in fig. 4, in order to improve the stability of the electrical contact, the right side of the basin-type insulator metallic accessory 61 is provided with a fixed end contact device 62 for electrically contacting the ground moving contact 47 and the moving contact conducting rod 46, wherein the fixed end contact device 62 is composed of a commutation transition joint 621 fixedly connected to the metallic accessory and a fixed end contact 622 mounted on the commutation transition joint 621, and the fixed end contact 622 is used for contacting the ground fixed contact 474 or the conducting moving contact 463.
Further, three insulated contacts 14 are arranged at equal intervals on the inner side of the closed shell 1 corresponding to the directions of three metal accessories 61 of the basin-type insulator and corresponding to one moving contact conducting rod 46 and two grounding contact devices 47, and the included angle between two adjacent insulated contacts 14 is 120 degrees.
As shown in fig. 4-6 and 14, the scheme of the present invention, which does not contain a transition short tube 8, is used for testing GIS without a basin insulator, during one phase of the GIS, by operating an insulation rotating handle 48 outside the sealed housing 1 to rotate a supporting rotating shaft 41 so as to drive an insulation pull rod 42, a conductive rotating shaft 43 and a turntable 45 to rotate, a movable contact conducting rod 46 installed on the turntable 45 is electrically connected with one of metal accessories 61 of the basin insulator 6 through a static end contact device 62, GIS three phases are respectively connected with three metal accessories 61 of the basin insulator 6 from the left side through conductors, at this time, the first conducting rod 3 sequentially inputs high voltage electricity (lightning stroke electricity 1050kv, a working frequency 460 kv) to the corresponding phase of the GIS through a conductive seat 55, a supporting seat 53, the conductive rotating shaft 43, the turntable 45, the movable contact conducting rod 46 and the static end contact device 62 of the basin insulator 6, and the metal accessories 61, and the two grounding contact devices 47 are connected with the metal accessories 61 of the basin insulator through a grounding static contact 474 and the static end contact device 62, but the grounding contact device is connected with the two phases through the grounding contact device 473 to the inside of the basin insulator 6, so that the two phase is in a pressure-resistant state is realized; after the test of the phase is finished, the rotary supporting shaft 41 is rotated again by operating the insulating rotary handle 48, the movable contact conducting rod 46 on the rotary table 45 is switched to the other metal accessory 61 of the basin-type insulator, so that one phase of the GIS and the metal accessory are conducted, the other two phases are not conducted, and after the second-phase withstand voltage test is finished, the rotary supporting shaft 41 is rotated once again only by operating the insulating rotary handle 48, so that the movable contact conducting rod 46 is electrically contacted with the last untested phase, and the three-phase test can be finished.
As shown in fig. 15, a scheme of the present invention including the transition short pipe 8 is basically identical to a scheme without the transition short pipe 8 in terms of the GIS, and is different from the GIS to which the present invention is applied, in that the scheme is used for testing GIS having the basin-type insulator 7, and the connection manner is that the convex side of the basin-type insulator 7 is connected, and in order to connect the conductor 71 of the basin-type insulator 7 more stably and conveniently, the present invention further provides a tulip contact device 9 at the left side of the basin-type insulator 6.
As shown in fig. 16, another solution of the present invention, which includes a transition stub 8, has a testing procedure substantially identical to that of the solution without the transition stub 8, except that the GIS to which the solution is applied is different, the solution is used to test GIS with a basin-type insulator 7, and the connection mode is to connect the concave side of the basin-type insulator 7.
The foregoing is merely exemplary embodiments of the present invention and is not intended to limit the scope of the present invention. All equivalent changes according to the design thought of the present invention fall into the protection scope of the present invention.
Claims (8)
1. A be used for GIS interval withstand voltage test testing arrangement which characterized in that: the device comprises a closed shell, a wire outlet sleeve, a first conducting rod, a movable end rotating device, a movable end supporting device and a basin-type insulator;
the movable end supporting device is arranged at the right end of the airtight shell and seals the right end of the airtight shell, and the basin-type insulator is arranged at the left end of the airtight shell and seals the left end of the airtight shell; the wire outlet sleeve is arranged at the outer side of the upper end of the closed shell, the first conductive rod is arranged in the wire outlet sleeve, and the first conductive rod extends into the closed shell and is electrically connected with the movable end supporting device;
the movable end rotating device comprises a supporting rotating shaft, an insulating pull rod, a conductive rotating shaft, a rotating seat, a rotating disc, a movable contact conductive rod and a grounding contact device; the support rotating shaft is rotatably arranged at the right end of the movable end supporting device in a penetrating manner, the right end of the support rotating shaft extends out of the right end of the closed shell, the left end of the support rotating shaft is connected with the right end of the insulating pull rod arranged in the movable end supporting device, the conductive rotating seat is fixed at the left end of the movable end supporting device and is electrically connected with the first conductive rod through the movable end supporting device, the conductive rotating shaft is rotatably arranged on the rotating seat in a penetrating manner, the left end of the insulating pull rod is connected with the right end of the conductive rotating shaft, and the left end of the conductive rotating shaft is connected with the rotary table;
the rotary table is provided with a movable contact conducting rod and two grounding contact devices at equal intervals corresponding to three metal accessories of the basin-type insulator, the grounding contact devices comprise an insulating pull rod, a grounding contact seat, a grounding movable contact and a grounding fixed contact, wherein the right end of the insulating pull rod of the grounding contact device is fixed on the rotary table, the grounding contact seat is arranged at the left end of the insulating pull rod of the grounding contact device, the grounding movable contact is arranged at the side part of the grounding contact seat, the grounding movable contact is contacted with the inner side of the airtight shell to be grounded, the grounding fixed contact is arranged at the left end part of the grounding contact seat, and the grounding fixed contact is electrically contacted with the left side of one metal accessory of the basin-type insulator; the right end of the movable contact conducting rod is fixed on the turntable, and the left end of the movable contact conducting rod is in electrical contact with the left side of one of the metal accessories of the basin-type insulator; the test device also comprises a transition short pipe, and the transition short pipe is fixedly connected to the left side of the basin-type insulator; the left side of the basin-type insulator metal accessory is provided with a plum blossom contact device, the plum blossom contact device consists of a plum blossom contact, a contact seat, a contact conductor, a guide rod and a contact shielding cover, the guide rod is fixedly arranged in the middle of the contact seat, the plum blossom contact is sleeved at one end of the contact seat, the contact conductor is fixed at the other end of the contact seat, and the contact shielding cover is sleeved on the plum blossom contact and the contact conductor; the movable end supporting device comprises a cover plate, a supporting insulating sleeve, a supporting seat, a shielding cover and a conductive seat, wherein the cover plate is arranged at the right end of the airtight shell and seals the right end of the airtight shell, a supporting shaft hole is formed in the cover plate, and the supporting rotating shaft penetrates through the supporting shaft hole; the support insulating sleeve is arranged in the airtight shell, the right end of the support insulating sleeve is fixedly connected to the cover plate, the support seat is fixedly connected to the left end of the support insulating sleeve, the shielding cover is sleeved on the support seat, the conductive seat is fixed on the outer side of the upper end of the support seat, the first conductive rod is inserted on the conductive seat, the rotating seat is fixedly arranged at the left end of the support seat, and the insulating pull rod of the moving end rotating device penetrates through the support insulating sleeve.
2. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: the movable end rotating device further comprises an insulating rotating handle and an indicating rod, wherein the insulating rotating handle and the indicating rod are arranged on the right side of the closed shell and are arranged at the right end of the supporting rotating shaft, and a positioning rod for limiting the rotation of the indicating rod is arranged at the position, corresponding to the position of the three metal accessories of the basin-type insulator, of the outer side of the cover plate.
3. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: the right end of the supporting insulating sleeve is fixedly connected with the cover plate by a flange.
4. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: the insulating pull rod of the movable end rotating device is connected with the conductive rotating shaft by virtue of a pin shaft.
5. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: the rotary seat is provided with a shaft hole, a bearing and a spring contact finger are arranged in the shaft hole, the conductive rotary shaft penetrates through the shaft hole of the rotary seat by means of the bearing and the spring contact finger, and a retainer ring for blocking the bearing on the rotary seat from sliding is fixedly arranged on the conductive rotary shaft.
6. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: the movable contact conducting rod consists of a second conducting rod, a conducting connector arranged at the tail part of the second conducting rod and a conducting movable contact arranged at the head part of the second conducting rod, wherein the conducting connector is fixedly connected to the turntable, and the conducting movable contact is in electric contact with the left side of one metal accessory of the basin-type insulator.
7. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: the right side of the basin-type insulator metal accessory is provided with a fixed end contact device for electrically contacting with a grounding moving contact and a moving contact conducting rod, and the fixed end contact device consists of a commutation transition joint fixedly connected with the metal accessory and a fixed end contact arranged on the commutation transition joint.
8. The test device for the GIS interval withstand voltage test as claimed in claim 1, wherein: three insulating contacts are arranged at equal intervals on the inner side of the closed shell corresponding to the directions of three metal accessories of the basin-type insulator and corresponding to a moving contact conducting rod and two grounding contact devices, and the included angle between every two adjacent insulating contacts is 120 degrees.
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| CN201711205210.4A CN107831424B (en) | 2017-11-27 | 2017-11-27 | Be used for GIS interval withstand voltage test testing arrangement |
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| CN201711205210.4A CN107831424B (en) | 2017-11-27 | 2017-11-27 | Be used for GIS interval withstand voltage test testing arrangement |
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| CN107831424A CN107831424A (en) | 2018-03-23 |
| CN107831424B true CN107831424B (en) | 2024-04-02 |
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| CN113504444B (en) * | 2021-09-13 | 2021-12-31 | 国网江西省电力有限公司电力科学研究院 | GIS is with multi-functional withstand voltage test frock |
| CN117214638B (en) * | 2023-11-07 | 2024-01-09 | 中国长江电力股份有限公司 | GIL pipeline high voltage resistance performance test system |
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