Foaming agent for sealing member pressure testing

Abstract

The invention discloses a foaming agent for sealing member pressure testing. The foaming agent comprises water, polyethylene glycol, polyvinylpyrrolidone, polyvinyl alcohol, polylactic acid, sodium alcohol ether sulphate, primary alcobol ethoxylate, alkanolamide, lauryl betaine, fatty acid methyl ester sulfonate, N,N-dimethyldodecylamine-N-oxide, carboxymethylcellulose, stearic acid group cyclodextrin, dodecyl polyglucoside, ethyl alcohol, methylisothiazolinone, stearin, triolein, ammonium chloride, and sodium metaphosphate. The foaming agent provided by the invention has the advantages of high foaming efficiency, rich and stable foam, and no corrosion to a detected object; in addition, after the foaming agent is used, rust does not occur on the surface of the sealing member, and the sealing member is not required to be subjected to rust-proof treatment, so that the process is reduced and the labor cost is reduced.

Description

【Technical field】 [0001] The invention relates to a foaming agent, in particular to a foaming agent for pressure testing of a sealed body. 【Background technique】 [0002] Sealing bodies such as vacuum devices, sealing components, and pressure vessels, as well as metal or plastic tanks, pipes, and valves need to be pressure tested for their sealing performance before use. Nowadays, when carrying out pressure testing and monitoring on the sealing performance of the sealing body, the air pressure of about 0.01-0.05 MPa is generally charged in the container such as the sealing body first, and then the foaming agent is applied to the weld seam outside the container, and then the connection is observed. Where there are air bubbles, it needs to be treated or processed, so as to avoid the occurrence of poor sealing performance of the sealing body. Usually, the foaming agent used for pressure test monitoring of sealed ladders is generally: soapy water, detergent or cleaning agent pl...

AI Technical Summary

Problems solved by technology

[0003] 1. The foaming effect is not good. Detergents are produced for the decontamination effect, so the foam is often not very rich, and the foam bursts in a short period of time, which is not conducive to observation;

[0004] 2. Soapy water, detergent or detergent are generally alkaline. Although adding water can reduce the alkalinity, it still cannot change its properties, and alkalinity will often corrode the metal seal, so that the glossy seal body luster darkening