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Valve body insertion device and related methods

A technology of valve main body and main body, which is applied in the direction of valve device, valve lift, valve details, etc., which can solve the problems of reduced operating life and increased damage

Active Publication Date: 2021-10-15
FISHER CONTROLS INT LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This damage is exacerbated in high differential pressure applications as the fluid at relatively high velocities impacts the metal surfaces of the valve and / or valve trim, resulting in a significantly reduced operating life of the valve

Method used

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  • Valve body insertion device and related methods
  • Valve body insertion device and related methods
  • Valve body insertion device and related methods

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Embodiment Construction

[0014] Valve bodies are usually made of carbon steel to reduce manufacturing costs. However, carbon steel has low corrosion or erosion resistance properties. In harsh service applications, fabricating valve bodies from highly corrosion- or erosion-resistant materials (eg, nickel alloy materials) adds significantly to manufacturing costs. Therefore, in order to reduce costs, cladding materials made of high corrosion-resistant or aggressive materials (for example, nickel alloys such as Inconel) are applied to materials made of low corrosion-resistant or aggressive materials (for example, Wetted surfaces of valve bodies made of carbon steel). The cladding material significantly reduces damage and / or wear caused by severely corrosive or aggressive process fluids that could otherwise damage the surfaces of valves made of less corrosion resistant materials, thereby increasing the operating life of the valve. Therefore, cladding materials are typically applied to the wetted surface...

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Abstract

The present invention relates to rotary valves, rotary valve assemblies, and related methods. Valve body insertion devices and related methods are described. An exemplary valve includes a valve body made of a first material and having a fluid flow passage and a first shaft bore. The fluid flow channel defines a first axis and the first shaft bore defines a second axis, wherein the second axis is substantially non-parallel with respect to the first axis of the fluid flow channel. The first insert is located in the first shaft hole. The first insert is made of a second material different from the first material such that the second material has higher corrosion resistance properties than the first material.

Description

technical field [0001] In general, the present disclosure relates to valves, and more particularly, to valve body insertion devices and related methods. Background technique [0002] Valves are commonly used in process control systems to control the flow of process fluids. In severe service applications (e.g., chemical industry, oil refining, petrochemical industry, natural gas, paper and pulp, power industry, etc.), control valves experience highly corrosive and / or aggressive service conditions that rapidly wear or reduce the operating life of the valve. For example, the wetted surfaces of the valve and / or the valve trim can be exposed to highly corrosive or aggressive process fluids (e.g., containing entrained particles, chlorides from salt water, etc.), which can damage ( For example, removing material) and / or rapidly abrading the surface of a valve made of a material of low corrosion resistance (eg, carbon steel). This damage is exacerbated in high differential pressu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K27/02F16K1/22F16K1/32
CPCF16K1/224F16K27/0218F16K41/026F16K1/2268F16K1/22
Inventor W·J·赫尔弗
Owner FISHER CONTROLS INT LLC