CN210091876U

CN210091876U - Transformer bushing oil sampling and oil supplementing device

Info

Publication number: CN210091876U
Application number: CN201920726764.7U
Authority: CN
Inventors: 代敏; 鹿波
Original assignee: Gloomy Electrical Appliances Co Ltd In Fair Zhuhai
Current assignee: Gloomy Electrical Appliances Co Ltd In Fair Zhuhai
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-02-18
Anticipated expiration: 2029-05-17

Abstract

The utility model discloses a transformer bushing oil sampling and oil supplementing device, which comprises a body, the oil tank, aerating device and three-way pipe, be provided with oil pipe and first trachea on the body, hose and transformer bushing are passed through to oil pipe's one end, and stretch into below transformer bushing's the oil level, oil pipe's the other end is connected with the oil tank, and stretch into below the oil level of oil tank, aerating device is connected with the air inlet of three-way pipe, the first gas outlet of three-way pipe is connected with first tracheal one end through first valve, first tracheal other end and transformer bushing, and set up more than transformer bushing's oil level, the second gas outlet of three-way pipe is passed through the second trachea and is connected with the oil tank, and the second trachea sets up more than the oil level of oil tank, be connected with the second valve between three-way pipe and the second trachea. The sealing performance is kept in the oil sampling and oil supplementing processes, and the quality change of the oil sample in the oil charging and oil supplementing processes is avoided, so that the normal operation of the transformer is ensured, and a certain guarantee is provided for the operation of a power grid.

Description

Transformer bushing oil sampling and oil supplementing device

Technical Field

The utility model relates to a transformer technical field, concretely relates to transformer bushing oil sampling and oil supplementing device.

Background

With the rapid development of national economy, the scale of electric power systems and power grids in China is rapidly increasing. The rapid increase of the scale of the power system also provides more strict requirements for the reliability of power supply, and the improvement of the safety and the stability of the power system has important significance for the stable development of national economy and the continuous improvement of the living standard of people. As one of the key devices of an electric power system, a power transformer performs many functions such as transmission and conversion of electric energy.

Transformer oil plays a vital role in the normal operation of the transformer. The transformer oil plays a role in insulation and insulation maintenance for windings and the like, so that the transformer is kept in a good insulation state; the high-voltage lead and the tap switch have the function of arc extinction, and the corona and arc discharge are prevented; and is also widely used as a liquid seal in a hydraulic safety valve. The control of moisture, gas and other particulate components in transformer oil is very critical and they have a significant impact on the performance of the transformer. There is therefore a need for better methods of oil extraction to meet this stringent standard.

The transformer is usually connected through the transformer bushing and is got the oil valve or mend the oil mouth, and when the transformer got oil, through getting the oil valve and take a sample, the intraductal negative pressure that easily forms of transformer bushing, the air gets into the transformer bushing under the negative pressure effect for transformer oil has the chance and oxygen in the air, moisture contact, and then makes transformer oil take place oxidation reaction, causes the intraductal oil appearance of cover to take place the qualitative change, influences the normal operating of transformer, is unfavorable for people's normal life and production.

Disclosure of Invention

The utility model provides a not enough to prior art, the utility model provides a transformer bushing oil sample and oil supplementing device for when the transformer got oil among the solution prior art, make the problem that the intraductal oil sample of transformer bushing takes place to matter to become easily.

The content of the utility model is as follows:

a transformer bushing oil sampling and supplementing device, which comprises a body, an oil tank, an air charging device and a three-way pipe, the body is provided with an oil pipe and a first air pipe, one end of the oil pipe is connected with the transformer bushing through a hose, and extends below the oil level of the transformer bushing, the other end of the oil pipe is connected with the oil tank and extends below the oil level of the oil tank, the air charging device is connected with the air inlet of the three-way pipe, a first air outlet of the three-way pipe is connected with one end of the first air pipe through a first valve, the other end of the first air pipe is connected with a transformer sleeve, and is arranged above the oil level of the transformer bushing, a second air outlet of the three-way pipe is connected with the oil tank through a second air pipe, and the second air pipe is arranged above the oil level of the oil tank, and a second valve is connected between the three-way pipe and the second air pipe.

Preferably, the first air pipe is connected with a pressure relief device through a pressure relief valve.

Preferably, a sealing sleeve is connected between the oil pipe and the hose.

Preferably, the inflation device adopts an inert gas inflation bottle.

Furthermore, the inflating device adopts a nitrogen inflating bottle.

The utility model has the advantages that: when an oil sample needs to be taken, the first valve is opened and the second valve is closed, and the air charging device charges air to the transformer bushing so as to generate positive pressure in the transformer bushing and promote the oil sample in the transformer bushing to enter the oil tank; when needs oil charge, because transformer bushing's oil mass reduces and produces the negative pressure, closes first valve and open the second valve this moment, aerating device inflates for the oil tank to produce the malleation in making the oil tank, make in the oil tank by getting into transformer bushing, the utility model discloses at the in-process of getting oil appearance and mending oil remain the leakproofness all the time, avoided oil appearance at the oil charge and the in-process emergence matter of getting oil to become, thereby guarantee the normal operating of transformer, provide certain ground guarantee for the operation of electric wire netting.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the embodiment of the present invention.

Detailed Description

The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.

Referring to fig. 1, the transformer bushing oil sampling and oil supplementing device disclosed in this embodiment includes a body 1, an oil tank 2, an air charging device 3, and a three-way pipe 4, where the body 1 is provided with an oil pipe 5 and a first air pipe 6, one end of the oil pipe 5 is connected to a transformer bushing (not shown) through a hose 7 and extends below an oil surface of the transformer bushing, and a sealing bushing 12 is connected between the oil pipe 5 and the hose 7. The other end of oil pipe 5 is connected with oil tank 2, and stretch into below the oil level 21 of oil tank 2, aerating device 3 is connected with the air inlet of three-way pipe 4, the first gas outlet of three-way pipe 4 is connected with the one end of first trachea 6 through first valve 8, the other end and the transformer bushing of first trachea 6, and set up more than the oil level of transformer bushing, the second gas outlet of three-way pipe 4 passes through second trachea 9 and is connected with oil tank 2, and second trachea 9 sets up more than the oil level 21 of oil tank 2, be connected with second valve 10 between three-way pipe 4 and the second trachea 9. In order to further reduce the air pressure of the transformer bushing, the first air pipe 6 is further connected with a pressure relief device 14 through a pressure relief valve 13, and the pressure relief device 14 adopts a pressure relief bottle or a vacuum pump. The inflating device 3 adopts an inert gas inflating bottle, and further, the inflating device 3 adopts a nitrogen inflating bottle.

The working principle of the embodiment is as follows:

when an oil sample needs to be taken, the first valve 8 is opened and the second valve 10 is closed, and the air charging device 3 charges air to the transformer bushing so as to generate positive pressure in the transformer bushing and promote the oil sample in the transformer bushing to enter the oil tank 2; when needs oil charge, because transformer bushing's oil mass reduces and produces the negative pressure, close first valve 8 and open second valve 10 this moment, aerating device 3 inflates for oil tank 2 to make 2 interior productions malleations of oil tank, make 2 interior by getting into the transformer bushing in the oil tank, the utility model discloses the in-process of getting oil appearance and replenishing oil remains the leakproofness all the time, has avoided oil appearance to take place the matter and become at the oil charge with getting oil in-process, thereby guarantees the normal operating of transformer, provides certain guarantee for the operation of electric wire netting.

The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the technical effects of the present invention can be achieved by the same means, which all belong to the protection scope of the present invention. The technical solution and/or the embodiments of the invention may be subject to various modifications and variations within the scope of the invention.

Claims

1. The utility model provides a transformer bushing oil sample and mend oily device which characterized in that: comprises a body (1), an oil tank (2), an air charging device (3) and a three-way pipe (4), wherein an oil pipe (5) and a first air pipe (6) are arranged on the body (1), one end of the oil pipe (5) is connected with a transformer sleeve through a hose (7) and extends below the oil level of the transformer sleeve, the other end of the oil pipe (5) is connected with the oil tank (2) and extends below the oil level (21) of the oil tank (2), the air charging device (3) is connected with an air inlet of the three-way pipe (4), a first air outlet of the three-way pipe (4) is connected with one end of the first air pipe (6) through a first valve (8), the other end of the first air pipe (6) is connected with the transformer sleeve and is arranged above the oil level of the transformer sleeve, a second air outlet of the three-way pipe (4) is connected with the oil tank (2) through a second air pipe (9), and the second air pipe (9) is arranged above the oil level (21) of the oil tank (2), and a second valve (10) is connected between the three-way pipe (4) and the second air pipe (9).

2. The transformer bushing oil sampling and supplementing device of claim 1, wherein: the first air pipe (6) is connected with a pressure relief device (14) through a pressure relief valve (13).

3. The transformer bushing oil sampling and supplementing device of claim 1, wherein: and a sealing sleeve (12) is connected between the oil pipe (5) and the hose (7).

4. The transformer bushing oil sampling and supplementing device of claim 1, wherein: the inflation device (3) adopts an inert gas inflation bottle.

5. The transformer bushing oil sampling and supplementing device of claim 1, wherein: the air charging device (3) adopts a nitrogen gas charging bottle.