Gas pressure cycle test method and device

Abstract

The invention provides a gas pressure cycle test method and device. The method comprises the following steps: measuring a first gas pressure value in a to-be-tested closed container at the current moment; under the condition that the first gas pressure value is smaller than a first preset threshold value, inflating the closed container to be tested, and continuously measuring the first gas pressure value in the closed container to be tested at the next moment of the current moment until the duration of continuously inflating the closed container to be tested reaches a first preset duration; and counting the total number of times of inflating the closed container to be tested before the moment corresponding to the last iteration, and obtaining the fatigue life of the closed container to be tested according to the total number of times. According to the present invention, the pressure cycle test is automatically performed on the to-be-tested closed container according to the first gas pressure value in the test closed container, and the fatigue life of the to-be-tested closed container is automatically and accurately obtained according to the counted total number of the inflation times into the to-be-tested closed container in the whole cycle test process.

Description

technical field [0001] The invention relates to the technical field of cycle testing, in particular to a gas pressure cycle testing method and device. Background technique [0002] Airtight containers are widely used in petrochemical and engineering machinery, etc. Among them, many airtight containers have gas pressure cycle fluctuations during use. [0003] For example, during the use of the hydraulic oil tank of the excavator, the hydraulic oil needs to be drawn from the hydraulic oil tank by the hydraulic pump for the use of the whole vehicle, and finally returned to the hydraulic oil tank. Since the hydraulic cylinder on the excavator working device expands and contracts back and forth, the oil in the oil tank The oil is added and discharged back and forth. In addition, the hydraulic oil tank is a closed container, and the rise or fall of the liquid level in the oil tank will cause the gas pressure inside the hydraulic oil tank to fluctuate cyclically, that is, the oil...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a gas pressure cycle test method and device, which are used to solve the problem of obtaining the fatigue life defect of the airtight container through theoretical analysis during the design process of the airtight container in the prior art, so as to realize the gas pressure cycle test of the airtight container, accurately Obtaining the Fatigue Life of a Closed Vessel

Images