Water filling and pressurizing device of steel pipe water pressure test

Abstract

The invention discloses a water filling and pressurizing device of a steel pipe water pressure test, relates to welded pipe water pressure test equipment and solves the problems of unreliable sealing and difficulty in detaching the pipe in the prior art. The water filling and pressurizing device consists of a filling valve, a connecting plate, a water filling and pressurizing head, end face seals, pipe detaching oil cylinders, guide poles and a pipe detaching plate. The connecting plate is fixed on the steel pipe water pressure test equipment. The filling valve is fixed on the left surface ofthe connecting plate. The water filling and pressurizing head is fixed on the right surface of the connecting plate. The filling valve is communicated with the water filling and pressurizing head. The two pipe detaching oil cylinders are respectively arranged at both sides of the connecting plate. Piston rods of the pipe detaching oil cylinders are connected with the pipe detaching plate through the guide poles. The end face of the water filling and pressurizing head and the end face of the pipe detaching plate are provided with the end face seals. The right surface of the pipe detaching plate is connected with a test steel pipe. The water filling and pressurizing device can be applied to a welded pipe hydrostatic pressure testing machine, has the advantages of reliable sealing performance, short time of maintaining the equipment, short artificial participating time, high automation degree, high production efficiency, convenience and reliability for detaching the pipe and the like.

Description

technical field [0001] The invention belongs to metallurgical machinery, in particular to a water filling and pressurizing device for a steel pipe hydraulic testing machine in a welded pipe hydrostatic pressure test. Background technique [0002] In the production of welded pipes, in order to check whether there are leakage defects of steel pipes under the specified pressure, and to eliminate a part of the residual stress of the pipe body and ensure the performance of the steel pipes, it is necessary to carry out a hydrostatic pressure test on the welded pipes. The equipment used for the test is called "steel pipe hydrostatic testing machine ". Before the pressure test, it is necessary to fill the steel pipe with water, seal the water into the steel pipe and then increase the pressure. The equipment that realizes these functions is a "water-filled pressurization device". After the pressure is tested, the steel pipe needs to be separated from the seal - take off the pipe. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art, provide a water-filled pressurized device for steel pipe hydrostatic testing, and solve the problems of unreliable sealing and difficult removal of the existing water-filled pressurized device

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