Device and method for assembly and test of PE ball valve

Abstract

The invention relates to the technical field of a ball valve, and in particular relates to a device and a method for assembly and test of a PE ball valve. The device comprises a control unit, a workbench (1), a first valve seat screwing mechanism, a second valve seat screwing mechanism, a clamping mechanism and a torque measuring mechanism, wherein the first valve seat screwing mechanism is used for screwing a valve seat into a valve body; the second valve seat screwing mechanism is also used for screwing a valve seat into a valve body; the clamping mechanism is used for clamping the valve body; the torque measuring mechanism is used for measuring a ball valve torque; the clamping mechanism is fixed on the workbench (1); the first valve seat screwing mechanism and the second valve seat screwing mechanism are respectively arranged at two sides of the clamping mechanism; the torque measuring mechanism is arranged on the workbench (1); and the first valve seat screwing mechanism, the second valve seat screwing mechanism, the clamping mechanism and the torque measuring mechanism are all electrically connected with the control unit. By using the device and the method, the PE ball valve is high in assembly efficiency, good in consistency and assembly quality.

Description

Technical field [0001] The invention relates to the technical field of ball valves, and in particular to an assembly test device and method for PE ball valves. Background technique [0002] The economically developed countries in the world began to study polyethylene gas pipes in the late 1940s. The United States has successively applied polyethylene pipes in gas transmission and distribution systems since the 1960s, and the proportion of use has gradually expanded. The polyethylene gas pipelines buried in 1983 Pipes accounted for 88.6%. At present, all developed countries and regions in Europe, the United States, and Japan have adopted polyethylene gas pipelines. [0003] my country started research on polyethylene gas pipes in the early 1980s. In 1995, the State Bureau of Technical Supervision and the Ministry of Construction issued national standards and engineering technical regulations for polyethylene gas pipes and fittings. In 2008, the With buried polyethylene (PE) piping...

AI Technical Summary

Problems solved by technology

[0004] With the extensive use of polyethylene pipes in the gas pipeline network in various places, the demand for PE ball valves as pipeline control components is also increasing, and more and more attention is paid to the design and manufacture of PE ball valves. PE ball valves consist of valve body, The valve stem, valve core, valve stem sealing ring, retaining ring, left and right valve seats, and valve seat sealing ring are composed. The sealing performance of the ball valve, that is, the sealing performance of the entire ball valve after the rotating valve stem drives the valve core to rotate mainly depends on the valve seat sealing ring. The compression amount is guaranteed, while the current PE ball valve is assembled by hand, which completely depends on the technical level of the workers, that is, it mainly relies on the workers' many years of work experience and hand feeling. It is difficult to collect component information and torque data, so efficient management cannot be carried out

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