Machining device and method for hard alloy valve element of throttle valve

Abstract

The invention provides a machining device and method for a hard alloy valve element of a throttle valve. The machining device is composed of an outer sleeve, an outer sleeve leakage-proof plate, a partition plate, an inner sleeve, an inner sleeve leakage-proof plate, a punching rod, a working box, a lower squeezing block and an upper squeezing block. The outer sleeve, the outer sleeve leakage-proof plate, the partition plate, the inner sleeve and the inner sleeve leakage-proof plate are sequentially placed on the lower squeezing block from outside to inside, the upper squeezing block is aligned with the axis of the inner sleeve and arranged above the inner sleeve, the working box is a thermal insulation box body, and a base is arranged below the interior of the working box; the lower squeezing block is installed in the middle of the base, a hand grab telescopic rod is arranged on the side face of the base, a hand grab extending to the position above the lower squeezing block is arranged at the top end of the hand grab telescopic rod, and a sliding rail is arranged at the top of the working box; and an upper squeezing block telescopic rod is installed below the sliding rail, the upper squeezing block telescopic rod can slide along the sliding rail, and the lower portion of the upper squeezing block telescopic rod is connected with the upper squeezing block. According to the design of the machining device and method adapting to the hard alloy valve element of the throttle valve, the purpose that a double-layer hard alloy valve element is manufactured is achieved.

Description

technical field [0001] The invention relates to the technical field of hard alloys, in particular to a processing device and method for a hard alloy valve core of a throttle valve. Background technique [0002] During the production of natural gas wells, it is necessary to install throttle valves on gas production wellheads, various manifolds and other high-pressure pipelines to adjust the flow rate of natural gas production. The core component of the throttle valve is the spool. By setting a number of small holes on the spool and adjusting the position of the spool in the flow channel, the purpose of adjusting the flow is achieved. At present, a certain throttle valve used in an oil field in China The spool has a structure such as figure 1 As shown, the hollow tubular structure is composed of cemented carbide (the main components are WC and Co), and there are a number of small holes arranged in a spiral shape on it. The installation method of the throttle valve is as follo...

AI Technical Summary

Problems solved by technology

[0004] At present, there is a certain amount of research on double-layer cemented carbide structures at home and abroad, such as the Chinese patent (application number 201110374632.0) "A Particle Immersion Casting Method for Preparing Cemented Carbide / Steel Laminated Composite Materials", the method used is The steel ball is placed inside, and then the valve cover is made of hard alloy on the outside. The ball processed in this way can meet the wear requirements, but it is difficult to achieve the anti-scouring effect on the hollow cylinder, and the hollow cylinder cannot use the same The way to process, let alone the small holes on it

Chinese Patent (Application No. 201310724238.4) "Double-Layer Cemented Carbide Substrate and Its Preparation Method" proposes to preform the outer layer of cemented carbide into a U shape, and then use it as a container to place the inner layer of cemented carbide And sintering, but this method can only make solid carbide with U-shaped structure, and cannot be used for the manufacture of valve core structure

Images