High-precision explosion limit tester capable of determining concentration of air dissolved in tested liquid

Abstract

The invention discloses a high-precision explosion limit tester capable of determining the concentration of dissolved air in tested liquid, which comprises an explosion kettle, a vacuum pump and an air compressor, and a dissolved air pressure testing device is arranged at the top of the explosion kettle. A static pressure sensor protection valve, a left side spark electrode, an exhaust pressure release valve, a first gas inlet valve, a second gas inlet valve, a right side spark electrode, a mixed gas inlet valve and a fifth gas inlet valve are horizontally and sequentially mounted on the side surface of the explosion kettle at intervals. The tester is additionally provided with a dissolved air pressure testing device for solving the problem of errors caused by dissolved air pressure in a liquid sample, meanwhile, an explosion triggering assembly combining a metal electrode and a heating wire is adopted, selection of triggering explosion generation modes is increased, and the tester adopts a jacket design and is externally provided with a constant-temperature oil bath, so that the testing efficiency is improved. The temperature control of the explosion kettle is more uniform. According to the design, the precision and accuracy of the test can be improved, so that the guiding significance of the test result on safety production is improved.

Description

technical field [0001] The invention relates to the technical field of explosion limit testing equipment, in particular to a high-precision explosion limit tester that can determine the concentration of dissolved air in a liquid to be measured. Background technique [0002] The main body of the existing explosion limit tester usually only includes an explosion kettle, a vacuum pump and a control host. When the test sample is a liquid, a certain amount of air will be dissolved under normal temperature and pressure, and the dissolved air will be released from the liquid during the volatilization process of the liquid. After the liquid to be tested is completely volatilized in the explosion kettle, the air pressure in the explosion kettle is equal to the sum of the air pressure generated by the volatilization of the liquid and the air pressure of the dissolved air. Because the existing explosion limit tester cannot measure the dissolved air in the liquid in advance. Partial pre...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a high-precision explosion limit tester that can determine the concentration of dissolved air in the liquid to be tested, so as to solve the above-mentioned background technology because the pressure generated by the dissolved air in the liquid introduces test errors and seriously affects the explosion. The test accuracy of the limit, the obtained explosion limit parameters will lose the guiding significance for safe production, and there will be a big safety hazard

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