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Multi-stage fluid regulators

A technology of fluid regulators and regulators, applied in fluid pressure control, control/regulation systems, instruments, etc., can solve problems such as leakage, reduced service life of back pressure regulators, damage, etc.

Active Publication Date: 2012-05-30
TESCOM EURO GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This high differential pressure results in a high fluid flow rate through the fluid valve assembly, causing components of the fluid valve assembly such as valve plugs, seats, etc. to be damaged due to, for example, erosion
As a result of this erosion, unwanted leakage may occur, reducing the life of the back pressure regulator, increasing maintenance, system downtime and / or cost

Method used

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  • Multi-stage fluid regulators
  • Multi-stage fluid regulators
  • Multi-stage fluid regulators

Examples

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Embodiment Construction

[0014] The exemplary fluid regulators described herein provide a stepped or interstage pressure drop between the inlet and outlet of the regulator. This is particularly advantageous when used in process systems using relatively high pressure fluids, such as hydraulic oil.

[0015] In general, the example fluid regulators described herein regulate the pressure of pressurized fluid at the inlet of the regulator. One example fluid regulator (eg, back pressure regulator) described herein includes a first fluid valve for providing a first stage of pressure drop and a second fluid valve for providing a second stage of pressure drop. More specifically, the second fluid valve provides a predetermined interstage pressure drop. In this way, each of the first and second fluid valves is affected by only a portion of the total pressure differential across the regulator between the inlet and outlet of the regulator. Accordingly, each of the first fluid valve and the second fluid valve is ...

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PUM

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Abstract

Multi-stage fluid regulators are described. An example fluid regulator (200) includes a regulator body (202) having an inlet (204) in fluid communication with a source of pressurized fluid. A first fluid valve (208) is disposed within the regulator body and coupled to the inlet to regulate a pressure of the pressurized fluid at the inlet. A second fluid valve (246) is disposed within the regulator body and coupled to the inlet and, via a passageway (248), to the first fluid valve. The second fluid valve is to cause a fluid pressure in the passageway to be regulated to a predetermined portion of the pressure of the pressurized fluid at the inlet.

Description

technical field [0001] The present invention relates generally to fluid regulators, and more particularly, to multi-stage fluid regulators. Background technique [0002] Process control systems commonly employ pressure regulators (eg, back pressure regulators) to control or maintain the pressure of a pressurized fluid, such as air, hydraulic fluid, etc., at or below a certain pressure. Maintaining or controlling the pressure of a process stream can be used to protect instruments or other control devices that are sensitive to and could be damaged by high pressure. For example, backpressure fluid regulators typically regulate the pressure of a high pressure fluid source to prevent the high pressure fluid from contacting instruments or controls upstream of the backpressure regulator. Back pressure regulators are typically configured to relieve or reduce excess fluid pressure when the pressure of the pressurized fluid increases to a pressure greater than the desired operating p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D16/10G05D16/06
CPCG05D16/10G05D16/185G05D16/024G05D16/0402G05D16/107Y10T137/777Y10T137/7791Y10T137/7794Y10T137/7795Y10T137/7796
Inventor R·尼贝尔
Owner TESCOM EURO GMBH & CO KG