CN211350322U

CN211350322U - Exhaust built-in metal corrugated oil conservator

Info

Publication number: CN211350322U
Application number: CN201922334911.9U
Authority: CN
Inventors: 邵红伟; 许宾德; 张晨; 吴文庆
Original assignee: Shenyang Haiwei Electric Power Equipment Co ltd
Current assignee: Shenyang Haiwei Electric Power Equipment Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-25
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to a compensation device which changes the volume along with the change of the oil temperature of a transformer, in particular to an exhaust built-in metal corrugated oil conservator, which comprises a cabinet body and a corrugated core body arranged in the cabinet body, wherein the corrugated core body is internally provided with a corrugated exhaust pipeline, and the bottom of the cabinet body is respectively provided with an oil pipeline and an exhaust pipe which are communicated with the inside of the corrugated core body; one end of the corrugated exhaust pipeline is connected with the upper cover plate of the corrugated core body through a joint, and the other end of the corrugated exhaust pipeline is communicated with the exhaust pipe; and air in the corrugated core body enters the corrugated exhaust pipeline through the joint and is exhausted through the exhaust pipe. The utility model discloses place the ripple core in the ripple formula exhaust pipe in, the exhaust high point reduces to make the high also synchronous reduction of exhaust, solved the high too high problem of metal ripple oil conservator exhaust.

Description

Exhaust built-in metal corrugated oil conservator

Technical Field

The utility model relates to a change volumetric compensation arrangement along with the change of transformer oil temperature, specifically speaking are built-in metal ripple oil conservator of exhaust.

Background

The existing internal oil type metal corrugated expansion oil conservator adopts a stainless steel corrugated core body as a volume compensation element, and air inside the corrugated core body needs to be exhausted during production or maintenance. However, since the exhaust pipe is thrown out from the top, the exhaust height is too high, which is not favorable for field operation.

Secondly, the existing metal corrugated oil conservator adopts a magnetic float level gauge to transmit signals to achieve the purpose of monitoring the oil level in real time. The service life of the magnetic float liquid level meter is short, and is only 1-2 years generally; because the field environment is severe, and the internal electrical components are greatly restricted by the temperature and the use environment, the internal electrical components are easy to damage during operation. The magnetic float level meter adopts a magnetic coupling technology, a large magnetic field can be formed when a transformer runs, and the magnetic field can slowly demagnetize elements of the magnetic float level meter, so that the signal transmission is inaccurate and no signal is transmitted.

Furthermore, along with the development of the power industry, the application of ultrahigh-voltage and high-capacity transformers is more and more extensive, the compensation capacity of the metal corrugated oil conservator is higher and higher, and the compensation capacity of the corrugated core body is also required to be larger and larger. When the straight end of the corrugated core body is lengthened, the rigidity of the straight end corrugation is lower, and the straight end of the corrugated core body is easy to generate plastic deformation under pressure, so that the use is influenced.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the exhaust height of the existing metal corrugated expansion oil conservator is too high and is not beneficial to the exhaust operation, the utility model mainly aims to provide an exhaust built-in metal corrugated oil conservator.

A secondary objective of the utility model is to provide a built-in metal ripple of exhaust stores up oil tank. The exhaust built-in metal corrugated oil conservator adopts the stay cord displacement sensor, is not influenced by the magnetic field of the field environment, and has accurate signal transmission, long service life and small occupied space.

Another object of the utility model is to provide a built-in metal ripple of exhaust stores up oil tank. The exhaust built-in metal corrugated oil conservator divides the corrugated core into an upper part and a lower part, and is additionally provided with the reinforcing plate and the idler wheel, so that the stable operation of the core is ensured while the compensation volume of the corrugated core is improved.

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

the utility model comprises a cabinet body and a ripple core body arranged in the cabinet body, wherein a ripple type exhaust pipeline is arranged in the ripple core body, and the bottom of the cabinet body is respectively provided with an oil pipeline and an exhaust pipe which are communicated with the inside of the ripple core body; one end of the corrugated exhaust pipeline is connected with the upper cover plate of the corrugated core body through a joint, and the other end of the corrugated exhaust pipeline is communicated with the exhaust pipe; and air in the corrugated core body enters the corrugated exhaust pipeline through the joint and is exhausted through the exhaust pipe.

Wherein: the upper cover plate is provided with a through hole, the joint is inserted into the through hole, the top end of the joint is provided with an upper cover which is fixedly connected to the upper surface of the upper cover plate in a sealing manner, and the through hole is positioned inside the upper cover; a filter screen is arranged on the lower surface of the upper cover, and the joint is connected to the filter screen; the air in the corrugated core body flows through the through holes and enters the corrugated exhaust pipeline after being filtered by the filter screen.

The edge of the upper cover plate is provided with a connecting plate, the bottom of the cabinet body is provided with a stay cord displacement sensor, and a steel wire rope of the stay cord displacement sensor is connected with the connecting plate.

The corrugated core bodies are divided into an upper corrugated core body and a lower corrugated core body, a reinforcing plate is additionally arranged between the two corrugated core bodies, and the upper corrugated core body and the lower corrugated core body are respectively connected with the upper surface and the lower surface of the reinforcing plate in a sealing manner; the outer surface of the reinforcing plate is circumferentially provided with a plurality of idler wheels, and the idler wheels are in rolling contact with the inner surface of the cabinet body.

The reinforcing plate is annular.

The utility model discloses an advantage does with positive effect:

1. the utility model discloses place the ripple core in the ripple formula exhaust pipe in, the exhaust high point reduces to make the high also synchronous reduction of exhaust, solved the high too high problem of metal ripple oil conservator exhaust.

2. The utility model discloses a stay cord displacement sensor does not receive the influence of on-the-spot magnetic field, and long service life can realize non-maintaining.

3. The utility model discloses a ripple core can divide into upper and lower two parts, through adding and establishing reinforcing plate and depended wheel, stabilizes the steady operation of ripple core, and the straight end of protection does not take place to warp, improves ripple core intensity.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is a schematic structural view of another corrugated core of the present invention;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 3;

wherein: 1 is the cabinet body, 2 is corrugated exhaust pipe, 3 is the ripple core, 4 is defeated oil pipe, 5 is the upper cover plate, 6 is the through-hole, 7 is the upper cover, 8 is the filter screen, 9 is the blast pipe, 10 is stay cord displacement sensor, 11 is the stay cord, 12 is the connecting plate, 13 is the reinforcing plate, 14 are by the wheel.

Detailed Description

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

As shown in fig. 1 and 2, the utility model comprises a cabinet body 1 and a corrugated core body 3 installed in the cabinet body 1, wherein a corrugated exhaust pipeline 2 is arranged in the corrugated core body 3, and an oil pipeline 4 and an exhaust pipe 9 communicated with the inside of the corrugated core body 3 are respectively arranged at the bottom of the cabinet body 1; one end of the corrugated exhaust pipeline 2 is connected with the upper cover plate 5 of the corrugated core body 3 through a joint, and the other end is communicated with an exhaust pipe 9; the air in the corrugated core body 3 enters the corrugated exhaust pipeline 2 through the joint and is exhausted through the exhaust pipe 9

In this embodiment, a through hole 6 is formed in the upper cover plate 5, the joint is inserted into the through hole 6, an upper cover 7 hermetically and fixedly connected to the upper surface of the upper cover plate 5 is arranged at the top end of the joint, and the through hole 6 is located inside the upper cover 7; a filter screen 8 is arranged on the lower surface of the upper cover 7, the filter screen 8 is positioned above the through hole 6, and the joint is connected to the filter screen 8; the air in the corrugated core body 3 flows through the through holes 6, is filtered by the filter screen 8 and then enters the corrugated exhaust pipeline 2.

In this embodiment, a connecting plate 12 is installed at the edge of the upper cover plate 5, a pull rope displacement sensor 10 is installed at the bottom of the cabinet body 1, and a steel wire rope 11 of the pull rope displacement sensor 10 is connected with the connecting plate 12.

The corrugated core 3 of the present embodiment may be of an integral structure, or divided into an upper one and a lower one; when the corrugated core bodies 3 are divided into an upper corrugated core body and a lower corrugated core body, an annular reinforcing plate 13 is additionally arranged between the two corrugated core bodies 3, and the upper corrugated core body and the lower corrugated core body 3 are respectively connected with the upper surface and the lower surface of the reinforcing plate 13 in a sealing way; the outer surface of the reinforcing plate 13 is provided with a plurality of idler wheels 14 along the circumferential direction, and the idler wheels 14 are in rolling contact with the inner surface of the cabinet 1.

The utility model discloses a theory of operation does:

when the transformer is put into operation or maintained, air in the corrugated core body 3 is exhausted through the corrugated exhaust pipeline 2, and after the corrugated exhaust pipeline 2 is arranged in the transformer, the exhaust height is reduced, so that the exhaust height is synchronously reduced.

In the process of expanding and contracting the corrugated core body 3, the steel wire rope 11 of the pull rope displacement sensor 10 is pulled by utilizing the up-and-down movement of the corrugated core body 3, the steel wire rope 11 is wound on a threaded hub, the hub is connected with a rotary inductor, and signals are output through the rotary inductor. The stay cord displacement sensor 10 can enable signals to be transmitted more accurately without being influenced by a magnetic field of a field environment, is long in service life and can be free of maintenance.

The utility model discloses divide into two parts about ripple core 3, add in the centre and established the reinforcing plate to set up the internal surface of depended wheel and the cabinet body 1 and support each other, stabilize the steady operation of ripple core 3, protect the straight end of ripple core 3 and do not take place to warp, improved the intensity of ripple core 3.

Claims

1. The utility model provides a built-in metal ripple of exhaust stores up oil tank which characterized in that: the novel cabinet comprises a cabinet body (1) and a corrugated core body (3) arranged in the cabinet body (1), wherein a corrugated exhaust pipeline (2) is arranged in the corrugated core body (3), and an oil conveying pipe (4) and an exhaust pipe (9) communicated with the inside of the corrugated core body (3) are respectively arranged at the bottom of the cabinet body (1); one end of the corrugated exhaust pipeline (2) is connected with an upper cover plate (5) of the corrugated core body (3) through a joint, and the other end of the corrugated exhaust pipeline is communicated with the exhaust pipe (9); the air in the corrugated core body (3) enters the corrugated exhaust pipeline (2) through the joint and is exhausted through the exhaust pipe (9).

2. The exhaust built-in metal corrugated oil conservator as claimed in claim 1, wherein: a through hole (6) is formed in the upper cover plate (5), the joint is inserted into the through hole (6), an upper cover (7) which is hermetically and fixedly connected to the upper surface of the upper cover plate (5) is arranged at the top end of the joint, and the through hole (6) is positioned in the upper cover (7); a filter screen (8) is arranged on the lower surface of the upper cover (7), and the joint is connected to the filter screen (8); the air in the corrugated core body (3) flows through the through holes (6) and enters the corrugated exhaust pipeline (2) after being filtered by the filter screen (8).

3. The exhaust built-in metal corrugated oil conservator as claimed in claim 1, wherein: the edge of the upper cover plate (5) is provided with a connecting plate (12), the bottom of the cabinet body (1) is provided with a stay cord displacement sensor (10), and a steel wire rope (11) of the stay cord displacement sensor (10) is connected with the connecting plate (12).

4. The exhaust built-in metal corrugated oil conservator as claimed in claim 1, wherein: the corrugated core bodies (3) are divided into an upper corrugated core body and a lower corrugated core body, a reinforcing plate (13) is additionally arranged between the two corrugated core bodies (3), and the upper corrugated core body and the lower corrugated core body (3) are respectively connected with the upper surface and the lower surface of the reinforcing plate (13) in a sealing manner; the outer surface of the reinforcing plate (13) is provided with a plurality of idler wheels (14) along the circumferential direction, and the idler wheels (14) are in rolling contact with the inner surface of the cabinet body (1).

5. The vented built-in metal bellows oil conservator as claimed in claim 4, wherein: the reinforcing plate (13) is annular.