CN217788176U

CN217788176U - Multi-outlet sleeve for cascade power frequency test transformer

Info

Publication number: CN217788176U
Application number: CN202221642727.6U
Authority: CN
Inventors: 崔明兴; 周繁; 王健; 方明; 曹瀚翔; 崔娜; 唐涛; 曲光磊
Original assignee: TBEA Shenyang Transformer Group Co Ltd
Current assignee: TBEA Shenyang Transformer Group Co Ltd
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-11-11
Anticipated expiration: 2032-06-28

Abstract

The utility model relates to a cascade power frequency test transformer is with many bushings that go out, including insulator, voltage-sharing ball, the device of being qualified for the next round of competitions and head lift seat, wherein the insulator head end is equipped with the head and rises the seat, and the insulator is terminal to be connected with the transformer tank, be equipped with the device of being qualified for the next round of competitions and voltage-sharing ball in the insulator, just the voltage-sharing ball is located in the insulator is terminal, device one end of being qualified for the next round of competitions passes behind the voltage-sharing ball and the transformer body top tight, in the other end is fixed in the insulator head end, be equipped with a plurality of little sleeves on the head lift seat, and the lead wire that the transformer body was drawn passes respectively with the little bushing who corresponds behind the device of being qualified for the next round of competitions. The utility model has the characteristics of insulating properties is good, the office is put low, the use is nimble, the installation is changed conveniently, antidetonation anti-wind ability is strong, application scope is wide etc.

Description

Multi-outlet sleeve for cascade power frequency test transformer

Technical Field

The utility model belongs to the technical field of electrical equipment and specifically relates to a multi-outlet sleeve pipe for cascade power frequency test transformer.

Background

The series power frequency test transformer is important equipment for performing power frequency tests on power equipment such as insulators, lightning arresters and the like, the sleeve pipe of the series power frequency test transformer is different from a single-outlet-line sleeve pipe of a conventional power transformer, the sleeve pipe is generally of a multi-outlet-line structure, namely a plurality of lead wires are led out through the sleeve pipe and divided into a plurality of small sleeve pipes for connection, meanwhile, all the transformers at all levels are installed at positions higher than the ground, and the sleeve pipes are all horizontally installed. Along with the continuous improvement of the capacity and the voltage grade of the power system, the voltage grade of the power equipment is correspondingly improved, the length of the outgoing line sleeve of the power frequency test transformer is increased, the installation difficulty is increased, the shock resistance and the wind resistance of the sleeve are reduced, the problems of insulation performance, partial discharge and the like need to be considered for the sleeve of the cascade power frequency test transformer, and the multiple outgoing line sleeve structure in the prior art is difficult to meet the requirements. For example, chinese utility model patent with the granted publication number CN201518256U discloses a multi-outlet end epoxy resin cast high-voltage bushing, the pipe body of which is formed by epoxy resin casting, the top of the pipe body is provided with a plurality of outlet terminals, the bottom of the pipe body is provided with a plurality of lead terminals, and the insulated wires 4 connecting the outlet terminals and the lead terminals are directly arranged in the pipe body. Also disclosed in chinese utility model patent publication No. CN101714446a is a glass fiber reinforced plastic capacitive multi-core transformer bushing, which is provided with a plurality of mutually insulated cable-through leads inside the bushing, the cable-through leads include a copper cable and an outdoor leading-out terminal and an oil terminal corresponding to the copper cable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a many outlet lines sleeve pipe for cascade power frequency test transformer has that insulating properties is good, the office is put low, use nimble, the installation is changed conveniently, antidetonation anti-wind ability is strong, application scope characteristics such as wide.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a cascade power frequency test transformer is with many bushings that go out, includes insulator, voltage-sharing ball, the device of being qualified for the next round of competitions and head lift seat, and wherein the insulator head end is equipped with the head and rises the seat, and the insulator end is connected with the transformer tank, be equipped with the device of being qualified for the next round of competitions and voltage-sharing ball in the insulator, just voltage-sharing ball locates in the insulator end, device one end of being qualified for the next round of competitions passes behind the voltage-sharing ball and the tight with transformer ware body top, the other end is fixed in the insulator head end, be equipped with a plurality of little sleeves on the seat is risen to the head, and the lead wire that transformer ware body was drawn forth passes respectively with corresponding little bushing behind the device of being qualified for the next round of competitions.

The wire outlet device comprises an aluminum alloy pipe, a cable paper insulator and an insulating cylinder, wherein the cable paper insulator is arranged on the outer side of the aluminum alloy pipe, the insulating cylinder is sequentially sleeved on the outer side of the cable paper insulator from inside to outside, and the voltage equalizing ball is arranged on the outer side of the outermost insulating cylinder.

And the cable paper is insulated and tightly supported by the innermost insulating cylinder, any adjacent insulating cylinder and the outermost insulating cylinder and the voltage-sharing ball through supporting bars.

An equipotential connecting line is arranged in the aluminum alloy pipe and connected with the head lifting seat.

The pressure equalizing ball is connected with a transition flange, and the transition flange is connected with the tail end of the porcelain sleeve.

And one end of the wire outlet device, which is far away from the transformer oil tank, is provided with a pressing flange and an adjusting sheet.

And a supporting cushion block for tightly supporting the wire outlet device is arranged in the head end of the porcelain sleeve.

An openable cover plate is arranged on one side of the head lifting seat, and the small sleeve is arranged on the cover plate.

The utility model discloses an advantage does with positive effect:

1. the utility model discloses a device of being qualified for next round of competitions includes that cable paper is insulating and a plurality of insulating cylinder, and the direct suit of pressure-equalizing ball is on the device of being qualified for the next round of competitions, and insulating properties is good, and the office is put lowly to shorten the middle part length of sleeve pipe oil, improved product antidetonation, anti-wind ability.

2. The utility model discloses a flange and adjustment sheet make device of being qualified for the next round of competitions and transformer ware body top tightly, when guaranteeing product quality, can also adjust according to the transformer ware body condition, and it is more nimble convenient to install.

3. The utility model discloses a transition flange cooperation insulator installation can effectively guarantee that the product installation is accurate, improves the installation effectiveness.

4. The utility model discloses a device of being qualified for next round of competitions can adapt to the lead wire of different quantity and pass, and application scope is more extensive, simultaneously the device of being qualified for the next round of competitions also conveniently takes out from the insulator and maintains or change, needn't be like the sleeve pipe among the prior art, in case inside and the sleeve pipe establish lead wire cable as an organic whole and break down, can only change sleeve pipe whole.

Drawings

FIG. 1 is a schematic view of the structure of the present invention,

figure 2 is an enlarged view at a in figure 1,

figure 3 is an enlarged view at B in figure 1,

fig. 4 is a schematic structural diagram of the line outgoing device in fig. 1.

The device comprises a porcelain bushing 1, a pressure equalizing ball 2, a transition flange 3, a wire outlet device 4, an aluminum alloy pipe 401, a cable paper insulator 402, an insulating cylinder 403, a stay 404, an equipotential connecting wire 405, a head lifting seat 5, a pressing flange 6, an adjusting sheet 7, a supporting cushion block 8, a small sleeve 9 and a lead 10.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in fig. 1-4, the utility model discloses a insulator 1, pressure-equalizing ball 2, outlet device 4 and head rise seat 5, wherein 1 head end of insulator is equipped with head rise seat 5, and insulator 1 is terminal to be connected with the transformer tank, be equipped with outlet device 4 and pressure-equalizing ball 2 in the insulator 1, just in pressure-equalizing ball 2 locates insulator 1 end, outlet device 4 passes behind pressure-equalizing ball 2 and the tight top of transformer ware body, be equipped with a plurality of little sleeves 9 on the head rise seat 5, just as shown in fig. 2, lead wire 10 that transformer ware body was drawn forth passes behind the outlet device 4 respectively with corresponding little sleeve 9 be connected.

As shown in fig. 1, the utility model discloses still include transition flange 3, and during the installation the ball 2 of will being qualified for the next round of competitions earlier with transition flange 3 connects, then transition flange 3 is connected with 1 end flange seats of insulator, ball 2 of will being qualified for the next round of competitions is connected with insulator 1 and is accomplished the back, penetrates insulator 1 from ball 2 one side of being qualified for the next round of competitions device 4 again, treats that wire outlet device 4 exposes behind the distance that insulator 1 head end satisfied the design distance, is fixed in insulator 1 head end with wire outlet device 4 again. As shown in fig. 2, in this embodiment, a supporting cushion block 8 is arranged in the head end of the porcelain bushing 1 to tightly support and fix the wire outlet device 4.

As shown in fig. 1, a pressing flange 6 and an adjusting sheet 7 are further arranged at one end of the outlet device 4 away from the transformer oil tank, the pressing flange 6 and the adjusting sheet 7 are both arranged in the head lifting seat 5, the pressing flange 6 is in bolted connection with a seat bottom plate of the head lifting seat 5, and the adjusting sheet 7 is arranged between the pressing flange 6 and the seat bottom plate of the head lifting seat 5. After being propped tightly in 1 head end of insulator through the lip block 8 as the device of being qualified for the next round of competitions 4, earlier tentatively install hold-down flange 6 and adjustment sheet 7, then hang the sleeve pipe wholly and wear out transformer ware body lead wire 10 from the device of being qualified for the next round of competitions 4, link firmly 1 end flange seat of insulator and transformer tank flange with insulator, the bolt passes during connection flange 3, after 1 and transformer tank link firmly, rethread when insulator 1 with the transformer tank adjust hold-down flange 6 and adjustment sheet 7 adjust 4 top tight transformer ware bodies with the device of being qualified for the next round of competitions, then install little sleeve pipe 9 on the apron of head lift seat 5 to be connected lead wire 10 with the interior terminal of little sleeve pipe 9 that corresponds respectively, cover the apron of head lift seat 5 at last and accomplish the sheathed tube installation of the utility model.

As shown in fig. 3, in this embodiment, the wire outlet device 4 includes an aluminum alloy tube 401, a cable paper insulator 402, a plurality of insulating cylinders 403, and a stay 404, where the cable paper insulator 402 with a designed thickness is wound outside the aluminum alloy tube 401, the plurality of insulating cylinders 403 are sequentially sleeved outside the cable paper insulator 402 from inside to outside, the voltage equalizing ball 2 is disposed outside the outermost insulating cylinder 403, and the stays 404 disposed in the circumferential direction are tightened between the cable paper insulator 402 and the innermost insulating cylinder 403, between any adjacent insulating cylinders 403, and between the outermost insulating cylinder 403 and the voltage equalizing ball 2. As shown in fig. 2 to 3, the aluminum alloy pipe 401 is provided with an equipotential bonding wire 405, and the equipotential bonding wire 405 is connected to the head raising seat 5. Usually locate the outer tip of sleeve pipe (like the patent of the grant bulletin number CN 201402952Y) with the equalizer ball among the prior art, this can prolong sleeve pipe length, and the utility model discloses a directly suit equalizer ball 2 in the device 4 of being qualified for the next round of competitions and connect transformer tank and realize the oil tank equipotential to the part length in the sleeve pipe oil has been shortened.

In this embodiment, the porcelain bushing 1 is formed by firing ceramics, the end of the porcelain bushing 1 has a large caliber, the head has a small caliber, and the two ends of the porcelain bushing 1 are provided with cement-bound flange seats, wherein a threaded blind hole is formed between connecting holes of the flange seats with the large calibers and is used for temporary connection with the transition flange 3.

In this embodiment, the pressure equalizing ball 2 is a cylinder with two flared ends, and is cast from aluminum, the outer diameter side is welded with a connecting flange and a reinforcing iron for connecting with the end of the transition flange 3, and the pressure equalizing ball 2 is coated with paper pulp insulation.

In this embodiment, the transition flange 3 is made of a common steel plate, and is provided with a first round hole connected with the pressure equalizing ball 2, a counter bore connected with a flange seat at the tail end of the porcelain bushing 1, and a second round hole connected with a flange of the transformer oil tank.

In this embodiment, a base plate is disposed on one side of the head lifting base 5, an outer screw rod connected to the porcelain bushing 1 is disposed on the outer side of the base plate, a through hole for the outgoing line device 4 to pass through is disposed on the inner side of the base plate, and an inner screw rod connected to the pressing flange 6 is disposed on the inner side of the base plate, an openable cover plate is disposed on the other side of the head lifting base 5, each small sleeve 9 is installed on the cover plate in a threaded connection manner, and a connection seat connected to the equipotential connection line 405 is disposed on the inner wall of the head lifting base 5.

In this embodiment, the pressure flange 6 is made of a common steel plate, the adjusting sheets 7 are made of insulating paperboards, and the number of the adjusting sheets 7 can be adjusted according to actual needs during installation.

In the present embodiment, the small bushing 9 is a conventional low voltage class bushing, which is a commercially available product.

The utility model discloses a theory of operation does:

the utility model discloses during the installation, earlier with the ball 2 of will equalizing pressure earlier with transition flange 3 is connected, then transition flange 3 is connected with 1 terminal flange seat of insulator, then penetrates insulator 1 from 2 one sides of ball of equalizing pressure with outlet device 4 again, treats that outlet device 4 exposes behind the distance of 1 head end of insulator and satisfies the design distance, installs supporting pad 8 again and props outlet device 4 tight fixedly, and tentatively adorn in advance hold down flange 6 and adjustment sheet 7, then whole the hoisting of sleeve pipe, then wear out transformer body lead wire 10 from outlet device 4, links firmly 1 terminal flange seat of insulator and transformer tank flange simultaneously, and after 1 installation of insulator to the transformer tank, rethread hold down flange 6 and adjustment sheet 7 adjust and make outlet device 4 top tight transformer body, install little sleeve pipe 9 on the apron of head rising seat 5 again to be connected lead wire 10 respectively with the terminal in the little sleeve pipe 9 that corresponds, the lid that rises seat 5 with the head at last, accomplish the sheathed tube installation.

The utility model discloses a device 4 of being qualified for next round of competitions includes that cable paper is insulating 402 and a plurality of insulating cylinder 403, and insulating properties is good, and the office is put lowly, and the direct suit of ball 2 of just evenly pressing has shortened the middle part length in the sleeve pipe oil on device 4 of being qualified for the next round of competitions, has improved product antidetonation, anti-wind ability. The utility model discloses a hold-down flange 6 and adjustment sheet 7 make outlet device 4 tight with transformer ware body top, when guaranteeing product quality, can also adjust according to the transformer ware body condition, install more nimble convenient, in addition the utility model discloses an outlet device 4 can adapt to the lead wire 10 of different quantity and pass, and application scope is more extensive, simultaneously outlet device 4 also conveniently takes out from insulator 1 and maintains or change, needn't like the sleeve pipe among the prior art, in case inside and sleeve pipe establish lead wire cable as an organic whole to break down, can only change the sleeve pipe is whole.

Claims

1. The utility model provides a cascade power frequency test transformer is with many wire sleeves that go out which characterized in that: the transformer wire outlet device comprises a porcelain bushing (1), a voltage-sharing ball (2), a wire outlet device (4) and a head lifting seat (5), wherein the head end of the porcelain bushing (1) is provided with the head lifting seat (5), the tail end of the porcelain bushing (1) is connected with a transformer oil tank, the wire outlet device (4) and the voltage-sharing ball (2) are arranged in the porcelain bushing (1), the voltage-sharing ball (2) is arranged in the tail end of the porcelain bushing (1), one end of the wire outlet device (4) penetrates through the voltage-sharing ball (2) and then is tightly pressed against a transformer body, the other end of the wire outlet device is fixed in the head end of the porcelain bushing (1), the head lifting seat (5) is provided with a plurality of small sleeves (9), and a lead (10) led out by the transformer body penetrates through the wire outlet device (4) and then is respectively connected with the corresponding small sleeves (9).

2. The multi-outlet bushing for the cascade power frequency test transformer of claim 1, wherein: the wire outlet device (4) comprises an aluminum alloy tube (401), cable paper insulation (402) and an insulation cylinder (403), wherein the cable paper insulation (402) is arranged on the outer side of the aluminum alloy tube (401), the cable paper insulation (402) is sequentially sleeved with a plurality of insulation cylinders (403) from inside to outside, and the outer side of the outermost insulation cylinder (403) is provided with the voltage equalizing ball (2).

3. The multi-outlet bushing for the cascade power frequency test transformer of claim 2, wherein: and the cable paper insulation (402) and the innermost layer insulation cylinder (403), any adjacent insulation cylinder (403) and the outermost layer insulation cylinder (403) and the voltage-sharing ball (2) are tightly supported through a stay (404).

4. The multi-outlet bushing for the cascade power frequency test transformer of claim 2, wherein: be equipped with equipotential connecting wire (405) in aluminum alloy pipe (401), just equipotential connecting wire (405) with head lift seat (5) are connected.

5. The multi-outlet bushing for the cascade power frequency test transformer of claim 1, wherein: the pressure equalizing ball (2) is connected with a transition flange (3), and the transition flange (3) is connected with the tail end of the porcelain sleeve (1).

6. The multi-outlet bushing for the cascade power frequency test transformer of claim 1, wherein: and one end of the wire outlet device (4) far away from the transformer oil tank is provided with a pressing flange (6) and an adjusting sheet (7).

7. The multi-outlet bushing for the cascade power frequency test transformer of claim 1, wherein: and a supporting cushion block (8) for tightly supporting the wire outlet device (4) is arranged in the head end of the porcelain sleeve (1).

8. The multi-outlet bushing for the cascade power frequency test transformer of claim 1, wherein: an openable cover plate is arranged on one side of the head lifting seat (5), and the small sleeve (9) is arranged on the cover plate.