Automatic measuring device and method for flash point of insulating oil special for electric power

Abstract

The invention relates to an automatic measuring device for the flash point of insulating oil special for electric power. The device comprises a concave heating groove connected with a control main machine, a sealing oil cup in the concave heating groove, and an oil cup cover on the sealing oil cup, wherein the oil cup cover is provided with a platinum resistance thermometer, a stirring rod, a pressure sensor and a burning exhaust pipe through holes in an inserting mode, the top end of the stirring rod is provided with a motor, the bottom end of the stirring rod is provided with blades, the pressure sensor is connected with the control main machine, and the burning exhaust pipe is provided with a solenoid valve. A determining method for the flash point comprises the steps that (1) a pressure and temperature change relationship of each standard substance is built in the control main machine; (2) a work standard curve of the flash points and the pressure relationship is built according to the known flash points of the standard substances; (3) the device is started to heat a tested oil product; (4), the flash point temperature of the tested oil product is determined. The device and method are high in detection sensitivity, high in degree of automation, free of open fire, safe, reliable and capable of avoiding the problem of environmental pollution in the experiment process.

Description

technical field [0001] The invention belongs to the technical field of flash point detection of insulating oil or transformer oil in the electric power industry, in particular to a device and method for automatically measuring the flash point of insulating oil special for electric power. Background technique [0002] The traditional method for testing the flash point of insulating oil is to add a certain volume of oil to a metal beaker, heat it at a constant speed, and ignite the oil with a flame. The temperature of the oil when it burns is the flash point. Disadvantages of this traditional method: the experimental site needs to be airtight to avoid air flow interference; the test generates polluted gas, causing indoor pollution and physical injury to the staff; the experiment requires open flames, and fire hazards often occur. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a kind of aut...

AI Technical Summary

Problems solved by technology

Disadvantages of this traditional method: the experimental site needs to be airtight to avoid air flow interference; the test generates polluting gas, causing indoor pollution and physical injury to the staff; the experiment requires open flames, and fire hazards often occur

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