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Actuator for well-head valve or other similar applications and system incorporating same

A brake and electric technology, applied in the field of regulating valves, can solve problems such as explosion, difficulty in strict environmental regulation, and hidden safety hazards.

Inactive Publication Date: 2006-03-15
WOODWARD GOVERNOR CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These systems can present difficulties in meeting the stringent environmental regulations associated with ephemeral natural gas emissions due to gaseous emissions
Moreover, due to short-term natural gas emission, there are major safety hazards
Sparks, whether produced by lighting, other adjacent equipment or components (including control electronics), or by maintenance personnel or their equipment while working within the gas network (the hazard may increase when safety precautions are not observed ), which may ignite the released gas and create a potentially explosive situation

Method used

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  • Actuator for well-head valve or other similar applications and system incorporating same
  • Actuator for well-head valve or other similar applications and system incorporating same
  • Actuator for well-head valve or other similar applications and system incorporating same

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Embodiment Construction

[0034]An electric actuator 10 particularly suitable for a wellhead valve 12 is illustrated in all of these figures in accordance with a preferred embodiment of the present invention. FIG. 1 illustrates a natural gas well production system 14 as a typical application and operating environment for the electric actuator 10 . As shown in FIG. 1 , wellhead valve 12 regulates the production output of natural gas production well 16 through gas header 18 . The wellhead valve 12 is installed in the gas manifold 18 in fluid series connection with the gas flow sensor 20 . The opening of the wellhead valve 12 and the natural gas pressure of the well 16 (typically, for most production wells, the natural gas pressure varies from about 10-900 pounds per square inch (psi) or even higher) determine the flow through the set. The gas flow rate of gas pipe 18. Gas flow sensor 20 measures the amount of natural gas flowing through pipe 18 . Gas flow sensor 20 provides electrical feedback indicat...

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Abstract

The invention discloses an electric actuator which is particularly suitable for driving wellhead valves to adjust the flow rate of natural gas in production wells. The electric actuator can be driven by the prior local power supply (typically for solar panels and batteries) in a wellhead valve system. The electric actuator can comprise a gear reducing chain, a brake and a manual override input unit with clutch protection. The electric actuator can be configured into three different operation modes, and provides preset positions during power off which comprise a fault bias fixation, a fault opening and a fault bias closing.

Description

technical field [0001] The present invention relates to regulator valves, and more particularly to regulator valves operating at high loads in remote locations where commercial power may not be readily available, such as regulator valves for wellheads that regulate the flow of natural gas or other process fluids out of an earth well. Background technique [0002] In the commercial natural gas production industry, gas gathering pipe networks often connect and branch together tens to hundreds of natural gas wells within a local geographic area. The individual wells will deliver the gas to a common export location through a network of gas gathering pipes. These wells may be owned by several different landowners and / or rights holders, who may sell their natural gas products to commercial suppliers of natural gas. Typically, a commercial supplier will purchase natural gas from landowners or rights holders depending on its needs. This requires regulating and monitoring the gas p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B21/06E21B33/03E21B34/02E21B34/16F16K31/04F16K31/05
CPCF16K31/047E21B34/16E21B34/02F16K31/046E21B34/025
Inventor 凯文·E·格里伯杰弗里·T·斯图尔特格兰特·A·斯威尔乔尔·W·克莱克罗格·T·许贝里
Owner WOODWARD GOVERNOR CO
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