CN211088049U

CN211088049U - Transformer breathing device

Info

Publication number: CN211088049U
Application number: CN201922302404.7U
Authority: CN
Inventors: 吴斌; 郑炜
Original assignee: Fujian Zhongyan Electromechanical Technology Co ltd
Current assignee: Fujian Zhongyan Electromechanical Technology Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-07-24
Anticipated expiration: 2029-12-19

Abstract

The utility model relates to a main transformer respiratory device technical field, in particular to transformer respiratory device. The utility model discloses the main part is the gasbag of breathing that fills the gassing to the conservator gasbag of transformer, the upper portion of gasbag of breathing is equipped with the opening, be equipped with the connecting device who makes both sealing connection between the air cock of opening and conservator gasbag, connecting device makes and forms an inclosed air cavity between conservator gasbag and the inner chamber of gasbag of breathing. The utility model overcomes inside current transformer conservator made air and moisture content infiltration oil feed pillow gasbag easily, caused the corruption and the ageing of gasbag, life reduces, need frequently to change the not enough of gasbag part.

Description

Transformer breathing device

Technical Field

The utility model relates to a main transformer respiratory device technical field, in particular to transformer respiratory device.

Background

The change of the internal air pressure caused by the change of the temperature at any time in the running process of the transformer can keep the normal pressure state by increasing or reducing the oil level of the internal oil conservator. The traditional transformer conservator is internally provided with an air bag, the bottom surface of the air bag is tightly attached to the oil level of an oil conservator, the air in the air bag is indirectly communicated with the atmosphere through a breathing tube and a moisture absorber, and when the oil level changes, the air bag can be expanded or compressed along with the air bag.

However, moist air from the atmosphere inevitably enters the bladder, resulting in degradation, corrosion and damage to the conservator bladder. Therefore, the user needs to frequently check and replace the conservator air bag.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: inside making air and moisture content infiltration oil feed pillow gasbag easily in order to overcome current transformer conservator, cause the corruption and the ageing of gasbag, the life reduces, need frequently to change the not enough of gasbag part, the utility model provides a transformer breathing device.

The utility model provides a technical scheme that its technical problem adopted is: a transformer breathing apparatus, characterized by: the main body of the air bag is a breathing air bag for charging and discharging an oil conservator air bag of the transformer, an opening is arranged at the upper part of the breathing air bag, a connecting device for hermetically connecting the opening and an air tap of the oil conservator air bag is arranged between the opening and the air tap of the oil conservator air bag, and a closed air cavity is formed between the oil conservator air bag and an inner cavity of the breathing air bag by the connecting device;

a protective shell is arranged outside the breathing air bag, and a vent hole is formed in the protective shell; the protection casing's below still is equipped with the U type pipe that is used for observing the air vent condition of admitting air, and the one end and the air vent intercommunication other end and the outside intercommunication of U type pipe, U type pipe are made by transparent material and the inside of U type pipe is provided with water seal liquid.

The working principle of the scheme is as follows: the breathing air bag is communicated with the conservator air bag of the transformer and serves as a gas cache warehouse of the conservator air bag, and the breathing air bag and the conservator air bag form a closed whole, so that external water vapor can not enter the system, and the safety risk of oil liquid mixing caused by the fact that air with moisture is sucked into the original conservator air bag is thoroughly solved.

In order to better implement the scheme, the method further comprises the following optimization scheme:

furthermore, the breathing air bag is of a strip-shaped tubular structure.

Further, the breathing bag has a bellows-like structure, and the bellows-like bag expands and contracts preferentially in the longitudinal direction thereof when the internal air increases or decreases, and the change in the radial dimension is not large, so that the maintenance worker can determine the exhaust and intake states of the entire dehydrating breather from the radial length thereof.

Furthermore, in order to better support the protective shell, a support frame is fixedly arranged at the bottom of the protective shell.

Further, in order to prevent the explosion of the airbag when the internal gas is broken and the oil in the oil conservator are mixed: and nitrogen, carbon dioxide or helium is sealed in the air cavity.

Preferably, the cost is reduced for convenient installation: the connecting device is a connecting flange.

The beneficial effects of the utility model are that, the utility model discloses a transformer breather adopts the form of gasbag butt joint, and only the conservator gasbag of main gasbag and transformer is connected, and inclosed environment can prevent effectively that steam from getting into the conservator gasbag in, is favorable to prolonging transformer conservator's life, reduces the maintenance cost.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of a transformer breathing apparatus in embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of a transformer breathing apparatus in embodiment 2 of the present invention;

the symbols in the drawings illustrate that: 1. the air bag comprises a breathing air bag 11, an opening 2, an oil conservator air bag 21, an air nozzle 3, a protective shell 31, a vent hole 32, a support frame 33, a U-shaped pipe 4 and a connecting flange.

Detailed Description

The invention is described in detail below with reference to the drawings and specific examples:

example 1:

as shown in fig. 1, the main body of this embodiment is a breathing bag 1 for inflating and deflating an oil conservator bag 2 of a transformer, an opening 11 is arranged at the upper part of the breathing bag 1, a connecting device for hermetically connecting the opening 11 and an air tap 21 of the oil conservator bag is arranged between the opening 11 and the air tap 21 of the oil conservator bag, and the connecting device enables a sealed air cavity to be formed between the oil conservator bag 2 and an inner cavity of the breathing bag 1;

a protective shell 3 is arranged outside the breathing air bag 1, and a vent hole 31 is arranged on the protective shell 3; a U-shaped pipe 33 for observing the air inlet and outlet conditions of the vent hole 31 is further arranged below the protective shell 3, one end of the U-shaped pipe 33 is communicated with the vent hole 31, the other end of the U-shaped pipe 33 is communicated with the outside, the U-shaped pipe 33 is made of transparent materials, and water sealing liquid is arranged inside the U-shaped pipe 33. The breathing air bag 1 is of a strip-shaped tubular structure. The bottom of the protective shell 3 is fixedly provided with a support frame 32.

And nitrogen is sealed in the air cavity.

The connecting device is a connecting flange 4, and is connected with the ventilation port of the conservator air bag in a sealing manner through the connecting flange 4, so that the sealing performance of the conservator air bag and the whole breathing air bag is maintained.

This transformer respiratory device is connected with conservator gasbag 2 only air cock 21 on gasbag 1, effectively prevents the entering of steam, is favorable to prolonging transformer conservator gasbag 2's life, reduces the maintenance cost.

Example 2:

as shown in fig. 2, the main body of this embodiment is a breathing bag 1 for inflating and deflating an oil conservator bag 2 of a transformer, an opening 11 is arranged at the upper part of the breathing bag 1, a connecting device for hermetically connecting the opening 11 and an air tap 21 of the oil conservator bag is arranged between the opening 11 and the air tap 21 of the oil conservator bag, and the connecting device enables a sealed air cavity to be formed between the oil conservator bag 2 and an inner cavity of the breathing bag 1;

a protective shell 3 is arranged outside the breathing air bag 1, and a vent hole 31 is arranged on the protective shell 3; a U-shaped pipe 33 for observing the air inlet and outlet conditions of the vent hole 31 is further arranged below the protective shell 3, one end of the U-shaped pipe 33 is communicated with the vent hole 31, the other end of the U-shaped pipe 33 is communicated with the outside, the U-shaped pipe 33 is made of transparent materials, and water sealing liquid is arranged inside the U-shaped pipe 33. The breathing air bag 1 is of a corrugated cylindrical structure.

The bottom of the protective shell 3 is fixedly provided with a support frame 32.

The chamber is filled with carbon dioxide, although helium may be used instead of carbon dioxide.

The connecting device is a connecting flange 4.

The long tubular breathing bag of example 1 is in an inflated state when full of air and in a deflated state when little of air, and requires high elastic strength of the bag wall with frequent changes in the pressure of the transformer; compared with the embodiment 1, the corrugated tubular breathing airbag in the embodiment 2 has the advantages that the airbag at the folded part is expanded when the air is full, the airbag shrinks along the folded part when the air is low, the requirement on the elasticity of the airbag wall is low, and the manufacturing cost is reduced.

The above-mentioned specific embodiments are only to explain the present invention in detail, the present invention is not limited to the above-mentioned embodiments, and any improvement or replacement according to the principles of the present invention should be within the protection scope of the present invention.

Claims

1. A transformer breathing apparatus, characterized by: the main body of the air bag is a breathing air bag (1) for charging and discharging an oil conservator air bag (2) of a transformer, an opening (11) is arranged at the upper part of the breathing air bag (1), a connecting device for hermetically connecting the opening (11) and an air tap (21) of the oil conservator air bag is arranged between the opening (11) and the air tap (21) of the oil conservator air bag, and a closed air cavity is formed between the oil conservator air bag (2) and an inner cavity of the breathing air bag (1) by the connecting device;

a protective shell (3) is arranged outside the breathing air bag (1), and a vent hole (31) is formed in the protective shell (3); the protection shell (3) is further provided with a U-shaped pipe (33) used for observing the air inlet and outlet conditions of the vent hole (31), one end of the U-shaped pipe (33) is communicated with the vent hole (31), the other end of the U-shaped pipe is communicated with the outside, the U-shaped pipe (33) is made of transparent materials, and water sealing liquid is arranged inside the U-shaped pipe (33).

2. The transformer breathing device of claim 1, wherein: the breathing air bag (1) is of a strip-shaped tubular structure.

3. The transformer breathing device of claim 1, wherein: the breathing air bag (1) is of a corrugated cylindrical structure.

4. Transformer breathing apparatus according to claim 2 or 3, wherein: and a support frame (32) is fixedly arranged at the bottom of the protective shell (3).

5. Transformer breathing apparatus according to claim 2 or 3, wherein: and nitrogen, carbon dioxide or helium is sealed in the air cavity.

6. Transformer breathing apparatus according to claim 2 or 3, wherein: the connecting device is a connecting flange (4).