Electro-hydraulic conversion part fault diagnosis system for DEH (Digital Electro Hydraulic Control System)

A fault diagnosis system and electro-hydraulic conversion technology, applied in the direction of fluid pressure actuation system testing, engine components, fluid pressure actuation devices, etc., can solve problems such as life diagnosis defects, avoid dangerous and economic losses, and reduce workload , the effect of saving maintenance costs

Active Publication Date: 2019-06-21
DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a DEH system electro-hydraulic conversion component fault diagnosis system, which solves the problem of the DEH system in the prior art on component life diagnosis defects, and can feedback fault information more timely and comprehensively

Method used

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  • Electro-hydraulic conversion part fault diagnosis system for DEH (Digital Electro Hydraulic Control System)
  • Electro-hydraulic conversion part fault diagnosis system for DEH (Digital Electro Hydraulic Control System)
  • Electro-hydraulic conversion part fault diagnosis system for DEH (Digital Electro Hydraulic Control System)

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Embodiment 1

[0042] refer to Figure 1-6 , a DEH system electro-hydraulic conversion component fault diagnosis system, belonging to the field of power station steam turbine digital electro-hydraulic control, including servo control card, electro-hydraulic conversion component, servo wireless diagnosis module, mobile terminal and server end;

[0043] Servo control card

[0044] As the object of fault diagnosis, the servo control card also includes a signal receiver, the signal receiver is electrically connected to the servo control card, and the signal receiver receives the instructions sent by the DEH / MEH control system;

[0045] Electro-hydraulic conversion parts

[0046] The electro-hydraulic conversion part includes an electro-hydraulic conversion valve and a hydraulically actuated mechanical part, the hydraulic actuated mechanical part is electrically connected to the control clamp through the electro-hydraulic conversion valve, and the servo control clamp drives the hydraulic pressur...

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Abstract

The invention discloses an electro-hydraulic conversion part fault diagnosis system for a DEH (Digital Electro Hydraulic Control System), and belongs to the field of digital electric-hydraulic controlof power station steam turbines. The electro-hydraulic conversion part fault diagnosis system for the DEH comprises a servo control clamping piece, an electro-hydraulic conversion part, a servo wireless diagnosis module, a mobile terminal and a service end; fault diagnosis parameters in the existing DEH / MEH (Micro Electro Hydraulic Control System) are optimized by utilizing the advantages of a fault diagnosis algorithm; the fault diagnosis parameters are optimized in the situation of ensuring normal operation of the existing diagnosis system; and the fault diagnosis parameters are updated periodically, so that fault diagnosis results are more accurate.

Description

technical field [0001] The invention belongs to the field of digital electro-hydraulic control of steam turbines in power stations, specifically relates to a fault diagnosis system for electro-hydraulic conversion parts of a DEH system, and can also be applied to smart power plants, the Internet of Things, and steam turbine intelligent fault diagnosis and life management. Background technique [0002] In the current traditional steam turbine fault diagnosis scheme, the overhaul and maintenance of the electro-hydraulic conversion components responsible for the digital electro hydraulic control system (Digital Electro Hydraulic Control System, referred to as DEH) of the steam turbine is carried out through the regular routine maintenance of the power plant. Although the control system of the traditional DEH itself can obtain certain fault information, the amount of information is still insufficient. Usually, experienced power plant maintenance personnel are required to go to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D21/00F01D17/26F15B19/00
Inventor 李秀君曾光明梁海刘炯游滔杨旭孙韬
Owner DONGFANG ELECTRIC AUTOMATIC CONTROL ENG CO LTD
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