Nozzle plugging device

Abstract

The invention provides a pipe opening plugging device which comprises a body, a blocking ring, a plugging rubber ring and a piston, wherein the body is in a cylindrical structure having the hollowing inside and one opened end; a penetrating hole is formed in the end part, opposite to the opened end, of the body; the piston, the plugging rubber ring and the blocking ring are arranged in the body in a sleeving manner in sequence; the piston comprises a piston head and a piston rod; the piston rod extends out of the penetrating hole; the piston head is positioned in the hollow cavity of the body; a clamping ring for limiting the blocking ring, the plugging rubber ring and the piston head in the hollow cavity of the body is fixedly clamped outside the blocking ring. The pipe opening plugging device is wide in application range, namely the pipe piece opening can extend into the hollow cavity; the tolerances of the end surfaces of the pipe piece opening are inconsistent; the plugging effect can not be influenced by uniformity, lacking or redundance, compacting in a transportation process or installation process, and the like; the service life is long, so that parts, such as the plugging rubber ring, are not required to be replaced frequently; the plugging effect is good, and the plugging rubber ring and the outer wall of the pipe piece opening are in flexible fastening, so that a sealing performance is good.

Description

technical field [0001] The invention belongs to the technical field of pipeline blockage detection, and in particular relates to a pipe port blockage device. Background technique [0002] Existing engines cool the engine through the circulation of water in the engine water channel. If the water channel leaks during the assembly process of the engine, the mild one will affect the cooling of the engine and its maximum performance will not be achieved. The serious one may be due to the water channel and the combustion chamber or The lubricating oil passages communicate with each other and the engine is scrapped. Therefore, the leak detection of the water channel of the engine is an indispensable link. At present, the leak detection method of the engine production line water channel is to block the temperature adjustment port, drain port, water inlet and other water ports of the engine with a plugging head (leave one of them as the inflation port), and inflate the engine with a...

AI Technical Summary

Problems solved by technology

At present, the plugging head on the market uses a ferrule to seal the end face of the pipe. Because the wall of the end face of the pipe is relatively thin, the rubber ring will be cut and scrapped after repeated use of the pipe end face. Therefore, the rubber ring needs to be replaced frequently before it can be used again; In addition, the labor intensity of multiple installations of the ferrule type is relatively large; again, the end faces of the water pipes do not require tolerances for each manufacturer, and it may be due to uneven end faces, missing or fleshy end faces, and bumps during transportation or installation (which will not affect the performance of the engine, but It makes it impossible to block in this way, so that the originally qualified engine is detected as unqualified)

Images