A special water inlet and exhaust device for cylinder hydrostatic test

Abstract

The present invention provides a special water inlet and air exhaust device for a cylinder water pressure test. The device comprises an upper cover plate which is provided with a first row of air cavities in the middle, a lower cover plate which is provided with a screw rod cavity in the middle, a water inlet and air exhaust assembly which is provided with an air cavity and a water inlet hole, a connection screw rod which is provided with a second air exhaust cavity in the middle, and a water outlet pipe which is provided with a water outlet cavity in the middle. The water inlet and air exhaust assembly is installed between the upper cover plate and the lower cover plate and is connected through welding. The water inlet and air exhaust assembly is also internally provided with a first through hole and a second through hole which are connected to the air cavity separately. The connection screw rod is fixed to the lower cover plate and is connected through a thread. The water outlet pipe goes through the water inlet and air exhaust assembly, the lower cover and the connection screw rod from up to down, and then the lower end of the water outlet pipe extends out of the bottom of the connection screw rod. The purpose of water inlet and air exhaust at the same time in the water pressure test can be realized by only adding one process hole in a cylinder, making multiple process screw holes in the cylinder is avoided, the device is very ideal from the condition of use, and testing target and requirements are achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic test devices, in particular to a special water inlet and exhaust device for cylinder hydraulic test. Background technique [0002] In the prior art, when doing the hydrostatic test of the cylinder body, two process screw holes should be processed on the cylinder body, which are used for water inlet and exhaust respectively. After the test, the two process screw holes are to be re-plugged. Some cylinders are relatively small, and only one hole can be processed, which increases the difficulty of our test, and even makes it impossible to carry out the test. In order to ensure the airtightness of the cylinder body (such as steam turbine cylinder, pump casing, etc.), the cylinder body will be subjected to a hydraulic test after finishing machining. Open the water inlet hole and the exhaust hole, the water inlet hole is used to drive tap water into the inner cavity of the cylinder, and the exhaust h...

AI Technical Summary

Problems solved by technology

This technical solution tests valves of various calibers, but does not solve the problem of one hole with multiple uses in the cylinder hydraulic test, which requires us to design a device to meet the requirements of one hole with multiple uses

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