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Oil sampling apparatus of nitrogen-filled oil-immersed transformer and corresponding method

An oil-immersed transformer and oil sampling technology, applied in sampling devices, testing dielectric strength and other directions, can solve problems such as air back suction, and achieve the effects of simple operation, convenient and fast oil sampling, and reasonable and practical design.

Active Publication Date: 2014-09-24
NINGBO BAOXIN STAINLESS STEEL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The first technical problem to be solved by the present invention is to provide an oil sampling method for a nitrogen-filled oil-immersed transformer, which is easy to operate, safe and reliable to use, and solves the problem of air sucking back

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  • Oil sampling apparatus of nitrogen-filled oil-immersed transformer and corresponding method

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Embodiment Construction

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] like figure 1 As shown, an oil sampling device for a nitrogen-filled oil-immersed transformer includes a transformer 1, a pressure gauge 3 and a shut-off valve 4 are arranged on the pipeline of the oil discharge valve 2 of the transformer, and the pressure gauge 3 and the oil discharge valve 2 The pipeline between is connected with a nitrogen cylinder 6 by a connecting pipe, and a nitrogen valve 5 is installed on the connecting pipe.

[0020] It is also possible to connect a three-way pipe to the pipeline of the oil discharge valve 2, one nozzle of the three-way pipe is connected to the pipeline equipped with the pressure gauge 3 and the shut-off valve 4, and the other nozzle is connected to the pipe connected to the nitrogen cylinder 6. Take over the connection.

[0021] The added pipeline part can be disassembled in whole or in part...

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Abstract

The invention provides an oil sampling apparatus of a nitrogen-filled oil-immersed transformer and an oil sampling method. The nitrogen-filled oil-immersed transformer comprises a transformer and is characterized in that an oil drain valve pipeline of the transformer is provided with a pressure gage and a stop valve, a nitrogen cylinder is connected with a pipeline located between the pressure gage and the stop valve through a connection pipe, and the connection pipe is equipped with a nitrogen valve. According to the invention, improvement is made on the basis of an original oil drain valve pipeline, so the problem that an oil sample cannot be taken out due to ageing of an insulating material caused by suck-back of air into the interior of the transformer easily occurred during oil sampling of the nitrogen-filled oil-immersed transformer is overcome; the oil sampling apparatus provided by the invention has reasonable and practical design, is simple to operate and convenient and fast in oil sampling, substantially improves reliability and security and only takes 5 min in the whole operation; moreover, a reconstructed pipeline part can be integrally or partially dismounted and movably used, so the oil sampling apparatus is applicable to oil-immersed transformers filled with gas.

Description

technical field [0001] The invention relates to the technical field of oil-immersed transformers, in particular to an oil sampling method for a nitrogen-filled oil-immersed transformer and a corresponding device. Background technique [0002] The main function of the transformer in the power system is to transform the voltage to facilitate the transmission of power. The most common are oil-immersed transformers, where the oil tank is filled with transformer oil. The role of transformer oil: 1. Insulation, isolating the air, and avoiding the insulation reduction of components due to contact with air and moisture. 2. Protect the iron core and winding components, and delay the erosion of oxygen on insulating materials. Three, cooling effect. 4. Arc suppression effect. In order to judge the internal conditions of oil-immersed transformers, it is necessary to take oil samples regularly for withstand voltage, physical and chemical tests. [0003] Most oil-immersed transformer...

Claims

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Application Information

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IPC IPC(8): G01N1/10G01R31/12
Inventor 吴鑫杰
Owner NINGBO BAOXIN STAINLESS STEEL
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