CN-224217324-U - Transformer oil tank with nitrogen protection mechanism

Abstract

The utility model relates to the technical field of transformers, in particular to a transformer oil tank with a nitrogen protection mechanism. The oil tank comprises an oil tank body, wherein the oil tank body comprises an oil tank cover and an oil tank main body. The top of the oil tank body is provided with a nitrogen storage tank, the nitrogen storage tank is communicated with the oil tank body through a connecting pipeline, and the connecting pipeline is respectively provided with a flow switching valve and a pressure regulating valve I. The inside humidity transducer and the oxygen sensor of being equipped with respectively of oil tank body, humidity transducer and oxygen sensor are connected with the alarm circular telegram of installing at oil tank body outer wall respectively. According to the utility model, the nitrogen storage tank is used for filling high-purity nitrogen into the transformer oil tank, so that positive pressure is formed in the oil tank, water vapor and oxygen can be effectively isolated from entering the transformer oil tank, and the adverse effect of the water vapor and the oxygen on the transformer oil in the transportation process is solved.

Inventors

• LIU YONG
• MAO JIANWEI
• JIANG YUNTAO

Assignees

• 青岛路而得电气有限公司

Dates

Publication Date

20260508

Application Date

20250526

Claims (3)

1. 1. The transformer oil tank with the nitrogen protection mechanism comprises an oil tank body (1), wherein the oil tank body (1) comprises an oil tank cover (101) and an oil tank main body (102), and is characterized in that a nitrogen storage tank (2) is arranged at the top of the oil tank body (1), the nitrogen storage tank (2) is communicated with the oil tank body (1) through a connecting pipeline (3), a flow switch valve (4) and a pressure regulating valve I (5) are respectively arranged on the connecting pipeline (3), a humidity sensor (6) and an oxygen sensor (7) are respectively arranged in the oil tank body (1), and the humidity sensor (6) and the oxygen sensor (7) are respectively connected with an alarm (8) arranged on the outer wall of the oil tank body (1) in an electrified mode.
2. 2. The transformer oil tank with the nitrogen protection mechanism according to claim 1, wherein a nitrogen pressure relief pipeline (9) is arranged at the top of the oil tank body (1), and a pressure regulating valve II (10) is arranged on the nitrogen pressure relief pipeline (9).
3. 3. The transformer oil tank with the nitrogen protection mechanism according to claim 1, wherein a sealing groove is arranged at the joint of the oil tank cover (101) and the oil tank main body (102), and a double-layer rubber sealing ring (11) is arranged in the sealing groove.

Description

Transformer oil tank with nitrogen protection mechanism Technical Field The utility model relates to the technical field of transformers, in particular to a transformer oil tank with a nitrogen protection mechanism. Background Transformers play a vital role in power systems, whereas transformer oil tanks as an important component thereof need to provide good protection for the internal transformer oil and other components. During the transportation of transformers, various complex environments are encountered, including the following: firstly, water vapor in the transportation environment easily invades into the transformer oil tank. Once water vapor is mixed into the transformer oil, the insulating properties of the transformer oil are reduced, increasing the risk of transformer failure. For example, when transporting transformers in wet coastal areas, the problem of moisture is particularly pronounced, which may lead to partial discharge or even short-circuiting of the transformer, affecting the normal operation of the power system; Secondly, oxygen is contacted with the transformer oil for a long time, so that the transformer oil can undergo oxidation reaction. The acid value of the oxidized transformer oil is increased, the insulating property is reduced, and the service life of the transformer is shortened. Particularly, in the long-distance transportation process, if the transformer oil tank cannot effectively isolate oxygen, the reliability of the transformer is seriously affected; thirdly, when the existing transformer oil tank is transported, a certain air pressure difference exists between the inside and the external environment, and external moist air and impurities easily enter the oil tank under the action of air pressure. However, the traditional oil tank lacks effective pressure regulation and protection mechanisms, and cannot form effective protection for transformer oil. Therefore, in order to solve the technical problems, the application provides a transformer oil tank with a nitrogen protection mechanism. Disclosure of utility model The utility model provides a transformer oil tank with a nitrogen protection mechanism, which aims to solve the adverse effect of water vapor and oxygen on transformer oil in the transportation process, and provides reliable protection for the transformer oil by forming positive nitrogen pressure in the transformer oil tank. . In order to achieve the above purpose, the technical scheme of the utility model is as follows: The utility model provides a transformer oil tank with a nitrogen protection mechanism, which comprises an oil tank body, wherein the oil tank body comprises an oil tank cover and an oil tank main body. The top of the oil tank body is provided with a nitrogen storage tank, the nitrogen storage tank is communicated with the oil tank body through a connecting pipeline, and the connecting pipeline is respectively provided with a flow switching valve and a pressure regulating valve I. The inside humidity transducer and the oxygen sensor of being equipped with respectively of oil tank body, humidity transducer with the oxygen sensor is connected with the alarm circular telegram of installing at oil tank body outer wall respectively. Further, the top of the oil tank body is provided with a nitrogen pressure relief pipeline, and the nitrogen pressure relief pipeline is provided with a pressure regulating valve II. Further, a sealing groove is arranged at the joint of the fuel tank cover and the fuel tank main body, and a double-layer rubber sealing ring is arranged in the sealing groove. The beneficial effects achieved by the utility model are as follows: According to the utility model, a nitrogen storage tank is arranged at the top of a transformer oil tank and is communicated with the inside of the oil tank through a connecting pipeline, a flow switching valve and a pressure regulating valve I are arranged on the connecting pipeline, a nitrogen pressure relief pipeline is arranged at the top of the transformer oil tank, and a pressure regulating valve II is arranged on the nitrogen pressure relief pipeline. Before the transformer is transported, the nitrogen storage tank is utilized to charge high-purity nitrogen into the transformer oil tank, so that positive pressure is formed inside the oil tank. The pressure regulating valve I can automatically regulate the filling of nitrogen according to the pressure change in the oil tank, the pressure regulating valve II can automatically regulate the discharging of nitrogen according to the pressure change in the oil tank, when the pressure in the oil tank is lower than a set value, the filling of nitrogen is automatically opened, when the pressure is higher than the set value, the surplus nitrogen is discharged, the stability of the positive pressure in the oil tank of the transformer is ensured, the water vapor and the oxygen are further effectively isolated from entering the oil tank of the transformer,