CN206022653U - A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction - Google Patents

A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction Download PDF

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Publication number
CN206022653U
CN206022653U CN201621078593.4U CN201621078593U CN206022653U CN 206022653 U CN206022653 U CN 206022653U CN 201621078593 U CN201621078593 U CN 201621078593U CN 206022653 U CN206022653 U CN 206022653U
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China
Prior art keywords
sleeve
metal sleeve
copper core
copper
column
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CN201621078593.4U
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Chinese (zh)
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刘君
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CHENGDU POWER SUPPLY Co OF STATE GRID SICHUAN ELECTRIC POWER Corp
State Grid Corp of China SGCC
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CHENGDU POWER SUPPLY Co OF STATE GRID SICHUAN ELECTRIC POWER Corp
State Grid Corp of China SGCC
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Abstract

The utility model discloses a kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction, including ground connection lid, end shield ground connection copper post, insulated porcelain sleeve, copper sheathing, column copper core, copper sheathing bottom open up blind hole, and column copper core is connected by spring with blind hole top;Insulating sleeve is arranged with outside copper sheathing, column copper core, metal sleeve on the outside of insulating sleeve, is provided with;Boss is provided with column copper core, and metal sleeve inner bottom surface arranges the convex set of insulation, and metal sleeve lateral surface arranges insulating washer;First sealing ring is set between the ground connection lid and metal sleeve, the second sealing ring is set on the convex contact surface covered with metal sleeve of the insulation, the 3rd sealing ring is set on the insulating washer and the contact surface of metal sleeve.The utility model is realized guaranteeing insulation effect while improving the purpose of sealing property in order to solve the problems, such as that the easy poor sealing of end shield earthing or grounding means causes end shield to be made moist in prior art.

Description

A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction
Technical field
The utility model is related to end shield ground connection field, relates in particular to a kind of end shield of sleeve pipe Leakage Current signal extraction Earthing or grounding means.
Background technology
At present, with the development of intelligent grid and electric network state intelligence examination and repair system, the on-line monitoring technique application of electrical network More and more extensive.The on-line monitoring of sleeve pipe Leakage Current can reflect sleeve pipe Leakage Current in operation, dielectric loss and electric capacity in real time Amount, finds casing imperfection in time, can be prevented effectively from the main transformer failure caused because of sleeve pipe failure.In operation, bottom shielding of bushing leads to Cross end shield ground connection copper post and end shield lid be joined directly together.Existing, sleeve pipe Leakage Current how is extracted, while reach good again Sealing effectiveness be difficult point in sleeve pipe Leakage Current on-line monitoring technique.If poor sealing is good, end shield is easily caused to make moist, Reliable extraction Leakage Current signal is unable to if insulation effect is bad, not only causes on-line monitoring to judge by accident, in some instances it may even be possible to because connecing Touch bad cause end shield discharge.
Utility model content
The purpose of this utility model is to provide a kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction, to solve In prior art, the easy poor sealing of end shield earthing or grounding means causes the problem that end shield is made moist, and realizes guaranteeing insulation effect while carrying The purpose of high sealing performance.
The utility model is achieved through the following technical solutions:
A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction, connects including ground connection lid, through the end shield of ground connection lid Ground copper post and the insulated porcelain sleeve around end shield ground connection copper post, end shield ground connection copper post lower end arrange copper sheathing, copper sheathing lower end connecting pole Shape copper core, the copper sheathing bottom offer blind hole, and in column copper core insertion blind hole, column copper core is connected by spring with blind hole top Connect;Pin-and-hole is additionally provided with the column copper core, and copper sheathing lower end arranges the cotter way matched with the pin-and-hole, sells by insertion Pin connection column copper core and copper sheathing in hole, cotter way;Insulating sleeve is arranged with outside the copper sheathing, column copper core, described exhausted Metal sleeve is provided with the outside of edge sleeve, the metal sleeve is threadedly coupled with ground connection lid;The column copper core is passed to metal On the outside of sleeve;The part that the column copper core is located in blind hole is additionally provided with a circle boss, and metal sleeve inner bottom surface is by absolutely The convex set of edge is coated to column copper core, and metal sleeve lateral surface is entered to the column copper core for passing metal sleeve by insulating washer Row cladding;First sealing ring, the insulation convex contact surface covered with metal sleeve are set between the ground connection lid and metal sleeve The second sealing ring of upper setting, arranges the 3rd sealing ring on the insulating washer and the contact surface of metal sleeve.
The problem that end shield is made moist, the utility model is caused to carry for the easy poor sealing of end shield earthing or grounding means in prior art Go out a kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction.This device include existing ground connection lid, end shield ground connection copper post, Insulated porcelain sleeve, end shield ground connection copper post lower end arrange copper sheathing, and copper sheathing lower end connects column copper core.The copper sheathing is used for keeping end shield to connect It is electrically connected between ground copper post and column copper core, it is ensured that electric current proper flow.The copper sheathing is preferably tube structure, the blind hole position Contact with copper sheathing in copper sheathing bottom, column copper core insertion blind hole.Spring is fixed on column copper core top, and the other end of spring is fixed In blind hole inside top surface, i.e., the top of column copper core and copper sheathing are coupled together by spring.Also set up in the column copper core There are pin-and-hole, copper sheathing lower end that the cotter way matched with the pin-and-hole is set, by inserting the pin in pin-and-hole, cotter way, by column copper Core bottom is coupled together with copper sheathing, and enables column copper core to carry out relative movement with copper sheathing in the range of cotter way.Described Insulating sleeve is arranged with outside copper sheathing, column copper core, is that copper sheathing, column copper core are arranged on inside insulating sleeve, by insulation Sleeve is hedged off from the outer world, it is to avoid electric current dissipates overflow and loses.Conventional metal sleeve is arranged on the outside of insulating sleeve.The column copper core The part being located in blind hole is additionally provided with a circle boss, and boss is that a circumferentially outside circle in column copper core is raised.This During utility model use, the screw thread between metal sleeve and ground connection lid is tightened, metal sleeve is moved upwards, and extruding first is close The sealing between metal sleeve and ground connection lid is realized in seal.Simultaneously drive the convex set of insulation to move upwards, the convex set that insulate move to Boss is contacted, and applies power upwards to boss, that is, promote column copper core to move upwards, and spring stress compresses, and applies court to copper sheathing To the power that end shield is grounded copper post, so that it is guaranteed that being in close contact between end shield ground connection copper post and copper sheathing, it is ensured that electrical connection properties are good. Moved under the convex drive for being enclosed within metal sleeve of insulation, therefore insulate and be in close contact between convex set and metal sleeve, extruding the Two sealing rings, realize the sealing between the convex set of insulation and metal sleeve.Set on the insulating washer and the contact surface of metal sleeve Put the 3rd sealing ring, for from outside again to column copper core around seal, the 3rd sealing ring coordinated insulation packing ring reaches Arrive moisture effect.In sum, the utility model guarantees the effect of insulation against ground by insulating sleeve, insulate convex set, insulating washer Really, by portions such as the metal sleeve of the first sealing ring, the second sealing ring, the 3rd sealing ring and supporting threaded connection, springs Part, realizes the purpose for improving sealing property.
Further, the boss arranges the 4th sealing ring with the convex inner room of insulation.Metal sleeve is being tightened with ground connection lid Between screw thread when, metal sleeve is moved upwards, drives the convex set of insulation to move upwards, and the convex set that insulate is moved to and contact with boss, crowded The 4th sealing ring is pressed, boss is realized and being insulated seal between convex set, further improve moisture seal performance of the present utility model.
Further, the metal sleeve is made for aluminum alloy materials.Aluminum alloy corrosion resistant intensity is high, for this reality Be conducive to improving service life with new middle making metal sleeve.
Further, the insulation is convex covers the convex shape being made for insulating materials, arranges along its axis direction logical Hole, the through hole are matched with column copper core, and column copper core is passed through from through hole.
Further, the column copper core is located at the end on the outside of metal sleeve and is arranged with nut, column copper core outer surface It is provided with the external screw thread matched with the nut.Be by tightening nut, then can will be equal to insulating washer, the 3rd sealing ring Metal sleeve surface is squeezed in, to reach more excellent moisture seal effect.
Further, the column copper core is electrically connected with copper sheathing also by annealed copper wire.Column copper core is guaranteed by annealed copper wire Electrical connection effect between copper sheathing, the situation for being prevented from electrically connecting failure occur.
The utility model compared with prior art, has the following advantages and advantages:
A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction of the utility model, by tightening metal sleeve and connecing Screw thread between ground lid, metal sleeve are moved upwards, are extruded the first sealing ring and are realized the sealing between metal sleeve and ground connection lid; The convex set of insulation is driven to move upwards simultaneously, the convex set that insulate is moved to and contacted with boss, applies power upwards to boss, that is, promote post Shape copper core is moved upwards, and spring stress compresses, and applies the power for being grounded copper post towards end shield to copper sheathing, so that it is guaranteed that end shield grounding copper It is in close contact between post and copper sheathing, it is ensured that electrical connection properties are good.Moved under the convex drive for being enclosed within metal sleeve of insulation, because It is in close contact between the convex set of this insulation and metal sleeve, extrudes the second sealing ring, realizes between the convex set of insulation and metal sleeve Sealing.3rd sealing ring is set on the contact surface of the insulating washer and metal sleeve, for from outside again to column copper core Around sealed, the 3rd sealing ring coordinated insulation packing ring reaches moisture effect.
Description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application Part, does not constitute the restriction to the utility model embodiment.In the accompanying drawings:
Structural representations of the Fig. 1 for the utility model specific embodiment;
Fig. 2 is the structural representation of copper sheathing in the utility model specific embodiment;
Fig. 3 is the structural representation of column copper core in the utility model specific embodiment;
Structural representations of the Fig. 4 for the convex set that insulate in the utility model specific embodiment.
Mark and corresponding component names in accompanying drawing:
1- ground connection lids, 2- end shields ground connection copper post, 3- insulated porcelain sleeves, 4- copper sheathings, 41- blind holes, 42- cotter ways, 5- column copper cores, 51- pin-and-holes, 6- springs, 7- insulating sleeves, 8- metal sleeves, 9- boss, the convex set of 10- insulation, 101- through holes, 11- insulating washers, The first sealing rings of 12-, the second sealing rings of 13-, the 3rd sealing rings of 14-, the 4th sealing rings of 15-, 16- nuts.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage become more apparent, with reference to embodiment and accompanying drawing, The utility model is described in further detail, and exemplary embodiment of the present utility model and its explanation are only used for explaining this Utility model, is not intended as to restriction of the present utility model.
Embodiment 1:
A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction as shown in Figures 1 to 4, including being grounded lid 1, wearing The end shield ground connection copper post 2 for crossing ground connection lid 1 and the insulated porcelain sleeve 3 for being grounded copper post 2 around end shield, 2 lower end of end shield ground connection copper post sets Copper sheathing 4 is put, 4 lower end of copper sheathing connects column copper core 5, and 4 bottom of the copper sheathing offers blind hole 41, and column copper core 5 inserts blind hole 41 Interior, column copper core 5 is connected by spring 6 with 41 top of blind hole;Pin-and-hole 51,4 lower end of copper sheathing is additionally provided with the column copper core 5 The cotter way 42 matched with the pin-and-hole 51 is set, column copper core 5 and copper are connected by the pin inserted in pin-and-hole 51, cotter way 42 Set 4;Insulating sleeve 7 is arranged with outside the copper sheathing 4, column copper core 5, is provided with metal sleeve 8 on the outside of the insulating sleeve 7, The metal sleeve 8 is threadedly coupled with ground connection lid 1;The column copper core 5 is passed to metal sleeve 8;The column copper core 5 The part being located in blind hole 41 is additionally provided with a circle boss 9, and 8 inner bottom surface of metal sleeve is by the 10 pairs of column copper cores of convex set that insulate 5 are coated, and 8 lateral surface of metal sleeve is coated by the column copper core 5 that insulating washer 11 pairs passes metal sleeve 8;Institute State and between ground connection lid 1 and metal sleeve 8 first sealing ring 12 is set, on the convex set 10 of the insulation and the contact surface of metal sleeve 8 Second sealing ring 13 is set, the 3rd sealing ring 14 is set on the insulating washer 11 and the contact surface of metal sleeve 8.The boss Between 9 and the convex set 10 of insulation, the 4th sealing ring 15 is set.The metal sleeve 8 is made for aluminum alloy materials.The insulation is convex The convex shape that set 10 is made for insulating materials, arranges through hole 101, the through hole 101 and column copper along its axis direction Core 5 matches, and column copper core 5 is passed through from through hole 101.The column copper core 5 is located at the end on the outside of metal sleeve 8.Described Column copper core 5 is electrically connected with copper sheathing 4 also by annealed copper wire.
During the utility model use, the screw thread between metal sleeve 8 and ground connection lid 1 is tightened, metal sleeve 8 is transported upwards Dynamic, extrude the first sealing ring 12 and realize the sealing between metal sleeve 8 and ground connection lid 1.The convex set 10 of insulation is driven to transport upwards simultaneously Dynamic, the convex set 10 that insulate is moved to and is contacted with boss 9, applies power upwards to boss 9, that is, promote column copper core 5 to move upwards, bullet 6 forced compression of spring, applies the power for being grounded copper post 2 towards end shield to copper sheathing 4, so that it is guaranteed that between end shield ground connection copper post 2 and copper sheathing 4 It is in close contact, it is ensured that electrical connection properties are good.The convex set 10 of insulation is moved to and is contacted with boss 9, can also extrude the 4th sealing ring 15, Realize boss 9 and insulate sealing between convex set 10, further improve moisture seal performance of the present utility model.The convex set 10 of insulation exists Moved under the drive of metal sleeve 8, therefore insulate and be in close contact between convex set 10 and metal sleeve 8, extruding second is sealed Circle 13, realizes the sealing between the convex set 10 of insulation and metal sleeve 8.On the contact surface of the insulating washer 11 and metal sleeve 8 3rd sealing ring 14 is set, for from outside again to column copper core 5 around seal, 14 coordinated insulation of the 3rd sealing ring Packing ring 11 reaches moisture effect.
Above-described specific embodiment, is entered to the purpose of this utility model, technical scheme and beneficial effect One step describe in detail, be should be understood that the foregoing is only specific embodiment of the present utility model, be not used to limit Fixed protection domain of the present utility model, all any modifications that within spirit of the present utility model and principle, is made, equivalent are replaced Change, improve, should be included within protection domain of the present utility model.

Claims (6)

1. a kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction, covers including ground connection(1), through ground connection lid(1)End Screen ground connection copper post(2), and around end shield be grounded copper post(2)Insulated porcelain sleeve(3), end shield ground connection copper post(2)Lower end arranges copper Set(4), copper sheathing(4)Lower end connects column copper core(5), it is characterised in that:The copper sheathing(4)Bottom offers blind hole(41), post Shape copper core(5)Insertion blind hole(41)Interior, column copper core(5)With blind hole(41)Top passes through spring(6)Connection;The column copper core (5)On be additionally provided with pin-and-hole(51), copper sheathing(4)Lower end is arranged and the pin-and-hole(51)The cotter way for matching(42), by insertion Pin-and-hole(51), cotter way(42)Interior pin connection column copper core(5)With copper sheathing(4);The copper sheathing(4), column copper core(5)Outside It is arranged with insulating sleeve(7), the insulating sleeve(7)Outside is provided with metal sleeve(8), the metal sleeve(8)With ground connection Lid(1)Threaded connection;The column copper core(5)Pass to metal sleeve(8)Outside;The column copper core(5)It is located at blind hole (41)Interior part is additionally provided with a circle boss(9), metal sleeve(8)Inner bottom surface is by the convex set that insulate(10)To column copper core (5)Coated, metal sleeve(8)Lateral surface passes through insulating washer(11)To passing metal sleeve(8)Column copper core(5)Enter Row cladding;The ground connection lid(1)With metal sleeve(8)Between the first sealing ring is set(12), the convex set that insulate(10)With gold Category sleeve(8)Contact surface on the second sealing ring is set(13), the insulating washer(11)With metal sleeve(8)Contact surface on 3rd sealing ring is set(14).
2. the end shield earthing or grounding means of a kind of sleeve pipe Leakage Current signal extraction according to claim 1, it is characterised in that:Institute State boss(9)With the convex set that insulate(10)Between arrange the 4th sealing ring(15).
3. the end shield earthing or grounding means of a kind of sleeve pipe Leakage Current signal extraction according to claim 1, it is characterised in that:Institute State metal sleeve(8)It is made for aluminum alloy materials.
4. the end shield earthing or grounding means of a kind of sleeve pipe Leakage Current signal extraction according to claim 1, it is characterised in that:Institute State the convex set of insulation(10)For the convex shape that insulating materials is made, through hole is set along its axis direction(101), the through hole (101)With column copper core(5)Match, column copper core(5)From through hole(101)In pass through.
5. the end shield earthing or grounding means of a kind of sleeve pipe Leakage Current signal extraction according to claim 1, it is characterised in that:Institute State column copper core(5)It is located at metal sleeve(8)The end in outside is arranged with nut(16), column copper core(5)Outer surface is provided with With the nut(16)The external screw thread for matching.
6. the end shield earthing or grounding means of a kind of sleeve pipe Leakage Current signal extraction according to claim 1, it is characterised in that:Institute State column copper core(5)Also by annealed copper wire and copper sheathing(4)It is electrically connected.
CN201621078593.4U 2016-09-26 2016-09-26 A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction Active CN206022653U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621078593.4U CN206022653U (en) 2016-09-26 2016-09-26 A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction

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Application Number Priority Date Filing Date Title
CN201621078593.4U CN206022653U (en) 2016-09-26 2016-09-26 A kind of end shield earthing or grounding means of sleeve pipe Leakage Current signal extraction

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107560436A (en) * 2017-09-28 2018-01-09 山河智能特种装备有限公司 One kind smashes stove car insulated working device
CN107677916A (en) * 2017-09-04 2018-02-09 中国电力科学研究院 End shield of high-voltage bushing ground shield and end shield of high-voltage bushing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107677916A (en) * 2017-09-04 2018-02-09 中国电力科学研究院 End shield of high-voltage bushing ground shield and end shield of high-voltage bushing
CN107677916B (en) * 2017-09-04 2020-07-14 中国电力科学研究院 High-voltage bushing tap grounding protective cover and high-voltage bushing tap
CN107560436A (en) * 2017-09-28 2018-01-09 山河智能特种装备有限公司 One kind smashes stove car insulated working device

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