A method for detecting the leak rate performance of a silicon carbide composite material circular pipe

Abstract

The invention relates to a method for detecting the leak rate performance of a silicon carbide composite material circular pipe. A sealing seat is connected to a first positioning rod, and a first sealing gasket is arranged between the sealing seat and the first positioning rod to form a first mold assembly. The transition block is connected with the second positioning rod, and the second sealing gasket is arranged between the transition block and the second positioning rod, and the transition block is connected with the vacuum leak detection interface to form the second mold assembly, and the silicon carbide composite material to be tested is round The two ends of the tube are respectively connected with the first mold assembly and the second mold assembly, the vacuum leak detection interface is connected with the valve on the leak detector, the vacuum pumping process is started, and the inert gas is sprayed on the surface of the silicon carbide composite material circular tube, Use the leak detector to detect the change of the data, and complete the leak rate detection of the silicon carbide round tube. Compared with the prior art, the invention solves the airtightness detection problem of the silicon carbide circular tube.

Description

technical field [0001] The invention relates to a performance detection method, in particular to a leakage rate performance detection method of a silicon carbide composite material circular pipe. Background technique [0002] Silicon carbide round tube is a new material round tube used in nuclear power. The product has clear requirements on the leakage rate index. Due to the special manufacturing process, there are pores in the development and production of silicon carbide round tube. According to the development requirements, the leakage rate of silicon carbide round tube The rate parameter has relevant values, so it is necessary to detect the leak rate of the silicon carbide circular tube. Due to the complex composition and structure of the silicon carbide round tube, there are pores, and there are problems with the leak detection seal; in addition, its mechanical size is relatively small, with an inner diameter of 10mm and an outer diameter of 12mm and unevenness, etc., m...

AI Technical Summary

Problems solved by technology

The testing device used includes a notch ring specimen and a cross-groove fixture with a base and stop rollers. The notch ring specimen is placed in the cross-shaped horizontal groove of the device, which solves the problem of the notch ring specimen being placed in a high-temperature and ultra-high temperature furnace. However, there is no better detection method for the leakage detection and sealing performance of silicon carbide round tubes.

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