Detection device and method for leakage amount of fire extinguisher every year

Abstract

The invention discloses a detection device for annual leakage of a fire extinguisher, and a method thereof. The device comprises a water trough (4) and at least one translucent cover (1) which is arranged in the water trough (4), has a sealed top end and an upper end with a scale and can cover a head of the fire extinguisher (2). The invention further discloses a detection method for annual leakage of the fire extinguisher, and the method comprises the following steps: filling water free of CO2 into the water trough (4) and the translucent cover (1), discharging air in the translucent cover (1) and fixing the translucent cover (1); placing the fire extinguisher (2) to be detected in the water trough (4) to cause the head of the fire extinguisher (2) to be just under the translucent cover (1) and below water level in the water trough (4); and reading volume of collected air from the scale within schedule time, and computing the annual leakage of the fire extinguisher. The detection device and the detection method for annual leakage of the fire extinguisher have the advantages of convenient operation, less equipment investment, high detection precision, good effect and obvious effect on controlling rate of products meeting standards.

Description

technical field [0001] The present invention mainly relates to a device and method for testing the annual leakage of the fire extinguisher during the production process, more specifically, by measuring the amount of gas leaked by the fire extinguisher within a certain period of time to determine whether the fire extinguisher meets the quality requirements of the annual leakage of the fire extinguisher Devices and methods. Background technique [0002] The annual leakage of fire extinguishers is a very important technical index of fire extinguishers, which is directly related to the storage and use of fire extinguishers. Larger foreign fire protection companies use helium mass spectrometry to detect it. Although the detection accuracy of this instrument is high, the detection instrument is expensive and requires high operation, so it has great limitations in domestic use. [0003] In order to save costs and simplify the detection device, at present, most domestic fire exting...

AI Technical Summary

Problems solved by technology

Larger foreign fire protection enterprises use helium mass spectrometry detection equipment to detect it. Although the detection accuracy of this instrument is high, the detection instrument is expensive and requires high operation, so it has great limitations in domestic use.

[0003] In order to save costs and simplify the detection device, at present, most domestic fire extinguisher manufacturers generally adopt the water immersion method for the measurement of annual leakage, that is, place the fire extinguisher in a pool, and use the naked eye to observe whether there are bubbles coming out of the water surface, so as to judge its leakage. Leakage, but the detection accuracy of this method is poor, and the detection effect is not ideal. Many fire extinguishers detected by this method still have no obvious blisters when immersed in water, but the pressure drops significantly after long-term storage

The main reason is that sometimes small leaks are encountered, which cannot be observed with the naked eye at all, which leads to problems in future use. Therefore, the water immersion method in the prior art cannot play a good role in detecting the annual leakage of fire extinguishers. And the control effect on the product qualification rate

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