Silicon carbide composite material circular tube leakage rate performance detection method

Abstract

The invention relates to a silicon carbide composite material circular tube leakage rate performance detection method. A seal base is connected with a first positioning rod, and a first seal is arranged between the seal base and the first positioning rod to form a first mold component; a transition block is connected with a second positioning rod, a second seal is arranged between the transition block and the second positioning rod, and the transition block is connected with a vacuum leakage detection interface to form a second mold component; two ends of a silicon carbide composite material circular tube to be detected are respectively connected with the first mold component and the second mold component; the vacuum leakage detection interface is connected with a valve on a leakage detector; vacuuming treatment is opened, inert gases is sprayed to the surface of the silicon carbide composite material circular tub, and leakage rate detection of the silicon carbide circular tube is completed by using the change of detection data of the leakage detector. Compared with the prior art, the method solves the gas tightness 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...

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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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