Polypropylene thin film capacitance end cover explosion-proof pressure measuring device

Abstract

The invention relates to a polypropylene thin film capacitance end cover explosion-proof pressure measuring device, and belongs to the technical field of mechanical equipment. The polypropylene thin film capacitance end cover explosion-proof pressure measuring device comprises a measuring part, a measuring area part, a measuring display part, and a base; the measuring part consists of an oil cup valve, a hand pump, a hand lift pump, an oil cup, a precision pressure gauge, and a cut-off valve; the measuring area part consists of an upper hold hoop, an oil pressure groove, a lower hold hoop, a connecting bottom support, a hollow pressing sheet, and an end cover to be measured; the measuring display part consists of a connecting lead, a mounting inserting sheet, copper wires, a battery, and adisplay lamp; and a closed loop is formed by the end cover to be measured, the connecting lead, the battery and the display lamp, and the display value of the precision pressure gauge is the explosion-proof pressure of the end cover to be measured. According to the polypropylene thin film capacitance end cover explosion-proof pressure measuring device, measuring precision is high, the accuracy ishigh, stability is good, the cost is low, the polypropylene thin film capacitance end cover explosion-proof pressure measuring device is suitable for measuring the explosion-proof pressure of polypropylene thin film capacitance end covers with all sizes, time and labor are saved for pressure building, and measuring is convenient and efficient.

Description

technical field [0001] The invention relates to a pressure measuring device, in particular to an explosion-proof pressure measuring device with an end cover for a polypropylene film capacitor, which belongs to the technical field of mechanical equipment. Background technique [0002] With the development of society and economy, the market's requirements for the safety performance of various products are increasing day by day, and the polypropylene film capacitor industry is also the same. However, due to the constraints of raw materials, capacitor structure and equipment, it is difficult to ensure its safety performance. [0003] In recent years, the urgent requirements of the polypropylene film capacitor industry for safety performance have also prompted a technological revolution in the field of polypropylene film capacitors. The end cap explosion-proof capacitor has gradually replaced the original aluminum shell explosion-proof design due to its superior safety performance...

AI Technical Summary

Problems solved by technology

However, apart from relying on the destructive test of the finished polypropylene film capacitor to verify its safety, there is no other way to judge it. However, judging the safety performance of the capacitor at the finished product stage is very likely to cause damage to the capacitor product due to poor safety performance. Serious consequences of batch scrapping, large waste, not in line with economic benefits

In addition, the destructive test of the finished polypropylene film capacitor takes a long time. Even if the capacitor end cover successfully activates the explosion-proof device, the entire test process takes about 3 hours; if the capacitor is short-circuited and the capacitor end cover does not activate the explosion-proof structure, it takes 12 hours. to get the result

This test process is time-consuming and laborious, and it cannot keep up with the increasing production capacity demand of polypropylene film capacitors

In addition, the destructive test equipment for the finished polypropylene film capacitor consists of two parts: the test host and the oven. The entire test process consumes a lot of electricity. If the test is carried out for a long time, the economic cost will also be large.

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