CN211404247U

CN211404247U - Oil-immersed transformer

Info

Publication number: CN211404247U
Application number: CN202020028316.2U
Authority: CN
Inventors: 叶小红; 陈挺; 钱鹏; 林志余
Original assignee: Chenghe Electric Power Technology Group Co Ltd
Current assignee: Chenghe Electric Power Technology Group Co Ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-09-01
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses an oil immersed transformer, including main part, respirator and conservator, be equipped with conservator main oil tank and ripple expansion core in the conservator, be equipped with the main part oil tank in the main part, conservator main oil tank and main part oil tank intercommunication, wherein, still include filter equipment, filter equipment connects ripple expansion core and respirator, filter equipment includes hutch and check valve, be equipped with dampproofing insulating oil in the hutch, dampproofing insulating oil leads to ripple expansion core inside all the time, the check valve is located between hutch and the respirator and restricts dampproofing insulating oil and moves to the respirator; the utility model discloses prevent suck-back, simple structure, long service life characteristics.

Description

Oil-immersed transformer

Technical Field

The utility model relates to an oil immersed transformer.

Background

The oil immersed transformer is a novel high-performance transformer with more reasonable structure and better performance, and the three-dimensional wound iron core has no air gap in a magnetic circuit because three core columns are arranged in a three-dimensional manner in an equilateral triangle, so that the winding is tighter, the three magnetic circuits are consistent in length and shortest, and the cross sectional area of the core columns of the iron core is closer to a circle, so that the performance is further improved, the loss is reduced, the noise is reduced, the three-phase balance is realized, the third harmonic component is reduced, and the product is more suitable for urban and rural power, the transformation of power grids of industrial and mining enterprises, and is more suitable for combined transformers and transformers for pre-installed.

Generally, an oil immersed transformer adopts an external oil type corrugated oil conservator, oil outside a corrugated expansion core body is directly communicated with and shared by transformer insulating oil, and when the volume of the transformer insulating oil expands or reduces along with the temperature of the oil, the volume of the corrugated expansion core body can be reduced or increased under the action of the oil pressure, so that the oil in an oil tank of the transformer is ensured to be filled with the oil all the time.

But present existence a shortcoming is that, the air of ripple inflation core communicates with each other with the outside through the respirator, produces respiratory effect when the flexible change of ripple inflation core volume, and what the air that gets into the ripple inflation core is difficult to avoid can remain a small amount of moisture, and long-time operation can corrode ripple inflation core inner wall gradually, influences the life of conservator.

Disclosure of Invention

The utility model discloses the main technical problem who solves provides an oil immersed transformer.

The utility model discloses the technical scheme who solves its technical problem and adopt is: the utility model provides an oil immersed transformer, which comprises a main body, respirator and conservator, be equipped with conservator main oil tank and ripple inflation core in the conservator, be equipped with the main part oil tank in the main part, conservator main oil tank and main part oil tank intercommunication, wherein, still include filter equipment, ripple inflation core and respirator are connected to filter equipment, filter equipment includes hutch and check valve, be equipped with dampproofing insulating oil in the hutch, dampproofing insulating oil accesss to ripple inflation core inside always, the check valve is located and restricts dampproofing insulating oil and moves to the respirator between hutch and the respirator.

Firstly, through the filtering device, the air entering from the respirator is ensured to be isolated through the moisture-proof insulating oil, so that the interior of the corrugated expansion core body has no moisture. In addition, the one-way valve is arranged, so that the moisture-proof insulating oil in the storage box is prevented from being sucked back into the respirator due to the fact that the respirator is in failure or external air pressure is too low in the using process, the whole equipment cannot normally run, and the service life is prolonged.

Wherein, the top end of the storage box is provided with a first dried object.

The setting of the drying object on the top end of the storage box further improves the overall drying effect, prevents that moisture exists inside, and further, the first drying object is fixed on the top end of the storage box in a bag, so that the storage box is more convenient to disassemble and replace.

Wherein, a second dry matter is arranged between the one-way valve and the respirator.

The setting of second drier further improves holistic drying effect, and here second drier is a cylinder, and the second drier is placed to cylinder inside, forms the air current and dries.

Wherein the first and second dry substances are calcium chloride.

The arrangement of calcium chloride is adopted, so that the overall drying effect is further improved.

The oil conservator is provided with an observation port, and the indicating device is located in the observation range of the observation port.

The indicating device can observe the state inside the oil conservator and remind a user to replace the dry object.

Wherein the indicating device is anhydrous copper sulfate.

The anhydrous copper sulfate is arranged, and the moisture entering the storage box is very little through the arrangement of the second drying object, so that the state of the internal moisture can be found visually through the anhydrous copper sulfate. Compared with the detection of electronic equipment, the display is more visual through chemical materials.

Wherein, the oil conservator is also provided with an oil level viewing port.

The setting of oil level viewing aperture for the operator can audio-visually observe the height of the transformer insulating oil of conservator main oil tank, remind whether refuel.

Wherein, be equipped with first oil filler hole on the conservator, first oil filler hole and conservator main fuel tank intercommunication.

Through the setting of first oil filler hole, it is more convenient to refuel.

Wherein, the oil conservator is provided with a second oil filling port which is communicated with the storage box.

Through the setting of second oil filler hole for it is more convenient to refuel.

Wherein, the main oil tank and the storage tank of the conservator are made of antirust materials.

And the arrangement of the antirust material is adopted, so that the integral antirust effect is further improved.

Wherein, still include the relief port, the relief port communicates with the hutch.

The setting of letting gas port prevents that inside atmospheric pressure from too high, can release through letting the gas port, and here lets gas port top be equipped with the ooff valve, and atmospheric pressure surpasss the default, and the ooff valve is opened, realizes the protection effect.

Drawings

Fig. 1 is a front view of embodiment 1 of the present invention;

fig. 2 is a side view of an oil conservator in embodiment 1 of the present invention;

fig. 3 is a connection structure diagram of embodiment 1 of the present invention.

Detailed Description

Example 1:

referring to fig. 1-3, an oil immersed transformer includes a main body 1, a breather 2, and an oil conservator 3, wherein the oil conservator 3 is provided with an oil conservator main oil tank 31 and a corrugated expansion core 32, the main body 1 is provided with a main oil tank 11, the oil conservator main oil tank 31 is communicated with the main oil tank 11 through an oil pipe, and the oil pipe is made of metal material. The oil conservator 3 is provided with an oil level observation port 36 and a first oil filling port 33, and the height of the transformer insulating oil of the main oil tank 31 of the oil conservator can be visually observed through the oil level observation port 36 to remind whether to fill the oil. Specifically, the oil is supplied through the first oil filler 33, and the first oil filler 33 is made of a metal material. Here, the level of the transformer insulating oil in the conservator main tank 31 is to be described.

The filter equipment connects ripple inflation core 32 and respirator 2, and filter equipment includes hutch 4 and check valve 5, is equipped with dampproofing insulating oil 41 in the hutch 4, and inside dampproofing insulating oil 41 led to ripple inflation core 32 always, the other end of hutch 4 passed through check valve 5 and respirator 2 intercommunication, and check valve 5 is used for restricting dampproofing insulating oil 41 to respirator 2 motion.

Further, a first dried material 42 is provided on the top end of the storage box 4. The drying object on the top end of the storage box 4 is arranged, the overall drying effect is further improved, moisture is prevented from being present inside, furthermore, the first drying object 42 is fixed on the top end of the storage box 4 in a bag type, and the disassembly and the replacement are more convenient.

A second desiccant 43 is provided between the one-way valve 5 and the respirator 2. The second drying object 43 is arranged to further improve the overall drying effect, wherein the second drying object 43 is in a cylindrical shape, and the second drying object 43 is placed inside the cylindrical shape to form air flow drying. The two driers form a double drying effect, the moisture-proof insulating oil 41 in the storage box 4 plays an isolation effect, and the three parts jointly act to improve the overall drying effect. The first dry matter 42 and the second dry matter 43 are calcium chloride. The arrangement of calcium chloride is adopted, so that the overall drying effect is further improved.

The storage box 4 is also communicated with the air release port 6 through an air pipe, the top end of the air release port 6 is provided with a switch valve 61, and when the air pressure in the storage box 4 exceeds a preset value, the switch valve 61 is opened to realize the protection effect.

The conservator 3 is provided with a second oil filling port 34, and the second oil filling port 34 is communicated with the storage box 4. Through the setting of second oil filler hole 34, make the oiling more convenient.

The conservator main oil tank 31 and the storage tank 4 are made of rust-proof materials.

The arrangement of the antirust material is adopted, and the integral antirust effect is further improved

Further, the oil conservator comprises an indicating device, wherein the oil conservator 3 is provided with an observation port 35, and the indicating device is positioned in the observation range of the observation port 35. The indicator here is anhydrous copper sulphate. The anhydrous copper sulfate is set so that the moisture entering the storage box 4 is very little through the setting of the second drying object 43, and therefore the state of the internal moisture can be found visually through the anhydrous copper sulfate. Compared with the detection of electronic equipment, the display is more visual through chemical materials.

At first, through filter equipment, guarantee to keep apart through dampproofing insulating oil 41 from the air that respirator 2 got into for no moisture in ripple expansion core 32 inside prevents that ripple expansion core 32 from rustting, improves life. In addition, the one-way valve 5 prevents that in the use, because the trouble of respirator 2 or outside atmospheric pressure are too low, the whole suck-back of dampproofing insulating oil 41 that leads to in the hutch 4 enters into respirator 2 for whole equipment can't normal operating, reduces life.

Claims

1. The utility model provides an oil immersed transformer, includes main part, respirator and conservator, is equipped with conservator main oil tank and ripple inflation core in the conservator, is equipped with the main part oil tank in the main part, and conservator main oil tank and main part oil tank intercommunication, its characterized in that: still include filter equipment, filter equipment connects ripple inflation core and respirator, and filter equipment is equipped with dampproofing insulating oil including hutch and check valve in the hutch, and inside dampproofing insulating oil led to ripple inflation core always, the check valve is located the restriction dampproofing insulating oil between hutch and the respirator and moves to the respirator.

2. An oil filled transformer according to claim 1, characterized in that: the top end of the storage box is provided with a first dried object.

3. An oil filled transformer according to claim 2, characterized in that: a second dry matter is arranged between the one-way valve and the respirator.

4. An oil filled transformer according to claim 3, characterized in that: the first and second dry substances are calcium chloride.

5. An oil filled transformer according to claim 1, characterized in that: still include indicating device, be equipped with the viewing aperture on the conservator, indicating device is located the observation scope of viewing aperture.

6. An oil filled transformer according to claim 5, characterized in that: the indicating device is anhydrous copper sulfate.

7. An oil filled transformer according to claim 6, characterized in that: an oil level observation port is also arranged on the oil conservator.

8. An oil filled transformer according to claim 1, characterized in that: the oil conservator is provided with a first oil filling port which is communicated with the main oil tank of the oil conservator.

9. An oil filled transformer according to claim 8, characterized in that: the oil conservator is provided with a second oil filling port which is communicated with the storage box.

10. An oil filled transformer according to claim 1, characterized in that: the air release opening is communicated with the storage box.