Wear-resisting high-temperature-resistant integrated type power station instrument ball valve

Abstract

The invention discloses a wear-resisting high-temperature-resistant integrated type power station instrument ball valve which comprises a handle and a valve body, wherein the handle is connected witha locking nut, the locking nut is connected with a pressure pad, the pressure pad is connected with a lining, the lining is connected with a press cover, the press cover is connected with a lining disk through a lining ring, filler and a connection rod ball is arranged between the press cover and the lining disk, the lining disk is connected with the valve body, and a protection layer is further arranged on the valve body; the protection layer is prepared from the following ingredients in mass fraction: black silicon carbide, fine grain aluminum oxide, organosilicone modified epoxy resin, methylphenyl silicone resin, polyolefin elastomer, glass fiber, modified vermiculite powder, a flame retardant, a synergistic flame retardant, a dispersing agent, filler, a thickening agent, an antioxidant and rare earth elements. The instrument valve disclosed by the invention has the advantages of simple structure, good wear resistance and high temperature resistance, prolonged service life and reduced cost.

Description

technical field [0001] The invention relates to an instrument ball valve, in particular to a wear-resistant and high-temperature-resistant integrated power station instrument ball valve. Background technique [0002] Ball valve (ball valve should be a globe valve in the field of marine engineering and ships), defined in the standard GB / T21465-2008 "Valve Terminology" as: a valve whose opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve , can also be used for the regulation and control of the fluid, among which the hard-sealed V-type ball valve has a strong shear force between the V-type ball core and the hard-facing metal valve seat, especially suitable for fibers and tiny solid particles. materials, etc., while the multi-way ball valve can not only flexibly control the confluence, diversion, and switching of the flow direction of the medium on the pipeline, but also close any channel to connect the other two channels. Ge...

AI Technical Summary

Problems solved by technology

[0003] The instrument valve is a pipeline accessory, which is a device used to change the end face of the passage and the flow direction of the medium, and control the flow of the conveying medium. The sealing performance of the instrument valve refers to the ability of each sealing part of the instrument valve to prevent the leakage of the medium. It is The most important technical performance index of instrument valves, the leakage at the connection between the valve body and the bonnet is called internal leakage, which is commonly referred to as lax closing, which will affect the ability of instrument valves to cut off the medium. For cut-off valves, Internal leakage is not allowed. The last two leakages are called external leakage, that is, the medium leaks from the inside of the valve to the outside of the valve. The external leakage will cause material loss, pollute the environment, and even cause accidents in severe cases. For flammable, explosive, toxic Or the medium with radiation, the leakage is not allowed, so the instrument valve must have reliable sealing performance, but at present, due to the harsh environment and the flammable and explosive situation when the instrument ball valve is used, the existing The valve body is easily damaged, increasing the cost

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