A debuggable and dismantling self-locking structure for an aviation heat exchanger bypass valve

Abstract

The invention discloses a self-locking structure that can be adjusted and disassembled for a bypass valve of an aviation heat exchanger. , spring seat, spring, valve sealing valve; the upper outer circumference of the lock nut has a rotating rib structure, and the lower part is threaded with the inner hole of the valve housing; the spring seat is threaded with the inner hole of the valve housing, and the valve sealing valve is formed by the inner hole of the valve housing limit. The technical scheme of the invention enables the self-locking device of the bypass valve of the aviation heat exchanger to be adjusted and disassembled, and the valve can be repaired and re-adjusted after being locked, which can improve the maintainability and debugging success rate of the valve, and save production and maintenance costs.

Description

technical field [0001] The invention belongs to a bypass valve of an aviation heat exchanger, in particular to a debuggable and dismountable self-locking structure of a bypass valve of an aviation heat exchanger. Background technique [0002] The bypass valve is an accessory of the aviation heat exchanger. Its function is to control the pressure threshold when the heat exchange medium is bypassed, and to control the flow path of the heat exchange medium by opening / closing the valve within a certain pressure range. Current Bypass Valves see figure 1 , which consists of a valve housing 1, a compression nut 2, a spring seat 3, an adjusting washer 4, a spring 5 and a valve sealing valve 6. The valve sealing valve 6 and spring 5 are put into the valve 1, the spring preload is adjusted by the spring seat 3 and the adjusting washer 4, so that the valve has a suitable opening pressure difference, and then the compression nut 2 is installed and tightened. The way of punching or wel...

AI Technical Summary

Problems solved by technology

The valve sealing valve 6 and spring 5 are put into the valve 1, the spring preload is adjusted by the spring seat 3 and the adjusting washer 4, so that the valve has a suitable opening pressure difference, and then the compression nut 2 is installed and tightened. The way of punching or welding on the compression nut 2 makes the compression nut 2 unable to loosen, prevents the valve from loosening, and makes the valve maintain a stable structure and opening pressure difference, but locking by punching points and welding will make the valve It cannot be repaired in the later stage, and during the production process, the above two locking methods will cause the adjusted valve opening pressure difference to change greatly and be unqualified, and it cannot be repaired

As a result, the scrap rate of this type of valve is high, and the maintainability is very poor

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