Integrated electric-hydraulic actuator type valve adjusting system for steam turbine

An electro-hydraulic actuator and regulating system technology, applied in the direction of machine/engine, mechanical equipment, engine components, etc., can solve the problems of easy loosening of oil pipeline joints, power oil leakage, complex system, etc., to improve reliability, The effect of protecting sealing and solving external leakage

Active Publication Date: 2015-11-11
SHENYANG NORTHEAST ELECTRIC POWER CONTROL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of control system requires a separate oil source for oil supply, and the system is complicated; secondly, in order to compensate the arc motion generated by the connection point between the lever and the oil motor, the oil motor needs to be in a swing state, and the oil supply pipeline of the oil motor also follows the oil motor. The engine swings together, so the joints of the oil pipeline are easy to loosen, causing the power oil to leak out, causing the system to not work normally, and it is very easy to cause a fire and cause unnecessary losses

Method used

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  • Integrated electric-hydraulic actuator type valve adjusting system for steam turbine
  • Integrated electric-hydraulic actuator type valve adjusting system for steam turbine
  • Integrated electric-hydraulic actuator type valve adjusting system for steam turbine

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Embodiment Construction

[0012] In order to solve the problem of power oil leakage in the current system, this embodiment uses an integrated electro-hydraulic actuator such as the REXA electro-hydraulic actuator as a lever drive device to replace the oil motor and electro-hydraulic conversion device in the current system. see figure 2 , the REXA electro-hydraulic actuator 6 is fixed in the groove of the trough-shaped bracket 1, the upper port of the bracket is fixed to the guide support plate 7, and the piston rod 61 of the REXA electro-hydraulic actuator passes through the guide hole in the center of the guide support plate. The guide hole is a copper guide hole 8, and the copper guide hole is installed on the guide support plate, and the two are in the structure of the mouth; the lower end of the bracket is installed on the base 10 through the hinge shaft 9,

[0013] see figure 1 , 3 -4, the upper end of the piston rod 61 of the REXA electro-hydraulic actuator is hinged with the power point of th...

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Abstract

The invention provides an integrated electric-hydraulic actuator type valve adjusting system for a steam turbine. The valve adjusting system is characterized by comprising a lever, a valve and an integrated electric-hydraulic actuator, wherein the integrated electric-hydraulic actuator is fixed in a support, a guide supporting plate is fixed to an upper end opening of the support, a piston rod of the integrated electric-hydraulic actuator penetrates through a guide hole in the center of the guide supporting plate, the lower end of the support is installed on a base through a hinge shaft, the upper end of the piston rod of the integrated electric-hydraulic actuator is hinged to a power point of the lever, and all hinge shafts are in the same direction. The integrated electric-hydraulic actuator type valve adjusting system has the advantages that the integrated electric-hydraulic actuator serves as an electric-hydraulic conversion device, external power oil is not needed, and in this way, the problem that an original system leaks power oil is solved; the piston rod is protected and sealed, and therefore the reliability of the integrated electric-hydraulic actuator and the whole system is improved.

Description

technical field [0001] The invention relates to an electro-hydraulic control system for regulating valves of industrial steam turbines. Background technique [0002] Industrial steam turbines have low power and high speed. At present, the system for regulating the valve opening and closing of industrial steam turbines (hereinafter referred to as the current system) includes a controller, an electro-hydraulic conversion device and an oil motor, and the electro-hydraulic conversion device and the oil motor are used as a lever driving device. Hinged with the valve stem, the lower end of the valve stem is connected to the valve core, and the lever resistance point drives the valve core up and down to adjust the opening and closing of the steam valve, and then control the speed of the steam turbine. This kind of control system requires a separate oil source for oil supply, and the system is complicated; secondly, in order to compensate the arc motion generated by the connection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D17/22
Inventor 刘宝军郑学明刘观华孙洪义
Owner SHENYANG NORTHEAST ELECTRIC POWER CONTROL
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