Measuring equipment for liquid level of oil conservator for power transmission and transformation engineering

Abstract

The invention relates to measuring equipment for the liquid level of an oil conservator for power transmission and transformation engineering. The measuring equipment comprises a pressure signal collecting device, a controller and an oil guiding pipeline connected with the oil conservator; the pressure signal collecting device is internally provided with a first pressure sensor and a second pressure sensor which are used for measuring oil pressure of two different vertical heights in the oil guiding pipeline respectively, the first pressure sensor and the second pressure sensor are both connected to the controller, and the first pressure sensor is higher than the second pressure sensor. Compared with the prior art, the measuring equipment has the advantages that through arrangement of thetwo pressure sensors, a known quantity can be added, and the liquid density can be conveniently eliminated by using a ratio of two hydraulic pressure values in the later period so that the measuring equipment can be applied to different liquids.

Description

technical field [0001] The invention relates to an oil conservator liquid level measurement technology, in particular to a measuring device for the oil conservator liquid level in power transmission and transformation projects. Background technique [0002] In power transmission and transformation projects, there are often oil pillows used for heat dissipation of transformers and reactors (converters) during use. The method is to install transformers (or reactors) in oil tanks. Due to the thermal expansion of transformer oil The reason for cold shrinkage is to configure and adjust the oil conservator for storing transformer oil, and the normal oil volume of the oil conservator is the key to ensure the normal operation of the transformer. [0003] For example, Chinese patent CN107367313A discloses a patrol instrument for measuring the oil level of a transformer oil conservator, which includes a signal acquisition device and a display control device connected to each other thr...

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Problems solved by technology

[0004] However, with the advancement of technology, the liquid placed in the oil pillow may not be oil, or there are more types of oil. In different environments or usage scenarios, the types of oil used are different, and the densities of various oils are different. The densities of the two coolants are different. In this case, the above-mentioned inspection instrument cannot realize the measurement

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