Gas cylinder static evaporation rate detection device and method

Abstract

The invention relates to a gas cylinder static evaporation rate detection device, which comprises a temperature collector, a pressure collector and an integrated tester, and is characterized in that the temperature collector is connected to an inlet of a gas cylinder emptying valve pipeline, and the pressure collector is connected to an outlet of a gas cylinder emptying valve; the temperature collector and the pressure collector are connected to the integrated tester through signal cables; or the temperature collector and the pressure collector work independently, and the integrated tester isused for calculating the static evaporation rate of a gas cylinder. The invention also relates to a gas cylinder static evaporation rate detection method. According to the invention, the static evaporation rate of the gas cylinder can be rapidly and accurately measured in a normal working state without replacing a working medium, the detection operability can be improved, the detection cost can bereduced, the detection time can be shortened, and the detection efficiency can be improved; and the integrated tester is provided with a plurality of ports, so that multi-channel simultaneous detection and calculation can be realized, and the detection time is saved.

Description

technical field [0001] The invention relates to the field of container performance detection, in particular to a gas cylinder static evaporation rate detection device and method. Background technique [0002] Static evaporation rate is an important index to measure the cold storage performance of cryogenic insulating gas cylinders. According to GB / T 34347-2017 "Periodic Inspection and Evaluation of Low-temperature Insulating Gas Cylinders", GB / T 18443.5-2010 "Vacuum Insulation and Cryogenic Equipment Performance Test Methods No. Part 5: Measurement of Static Evaporation Rate", it takes at least 24 hours to test the static evaporation rate of each gas cylinder, not including a series of procedures such as replacement of working fluid, static, and testing, which is time-consuming and labor-intensive. Taking LNG buses as an example, the on-board gas cylinders cannot be disassembled at will, so the weighing method is not suitable for this inspection, while the flow meter method ...

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Problems solved by technology

[0002] Static evaporation rate is an important index to measure the cold storage performance of cryogenic insulating gas cylinders. According to GB / T 34347-2017 "Periodic Inspection and Evaluation of Low-temperature Insulating Gas Cylinders", GB / T 18443.5-2010 "Vacuum Insulation and Cryogenic Equipment Performance Test Methods No. Part 5: Measurement of Static Evaporation Rate, it takes at least 24 hours to test the static evaporation rate of each gas cylinder, not including a series of procedures such as replacement of working fluid, static, and testing, which is time-consuming and labor-intensive

Taking LNG buses as an example, the on-board gas cylinders cannot be disassembled at will, so the weighing method is not suitable for this inspection, while the flow meter method needs an inspection cycle of 4 to 5 days, which is too long for the LNG cylinders on the bus. long, and the data acquisition equipment is relatively cumbersome, so the inspection methods specified in the current standard are not enough to meet the actual inspection status

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