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Electro-hydraulic servo control system

A control system, electro-hydraulic servo technology, applied in the direction of electrical program control, comprehensive factory control, comprehensive factory control, etc., can solve the problems of increasing operation and maintenance costs, increasing the possibility of failure, increasing investment, etc., to save investment and related costs, Reduced maintenance costs and excellent reliability

Inactive Publication Date: 2011-08-17
WISDRI ENG & RES INC LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] (3) The electro-hydraulic servo controller has specific requirements for the installation location and needs to occupy a certain space on the instrument panel or computer cabinet
[0011] (4) The electro-hydraulic servo controller, signal isolator and computer control system are connected by wires, which increases the possibility of failure
[0012] (5) Increased investment
[0013] (6) Increased operation and maintenance costs

Method used

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  • Electro-hydraulic servo control system

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Embodiment Construction

[0030] The present invention is further described below in conjunction with preferred embodiments.

[0031] An electro-hydraulic servo control system includes an input module, an output module, a first given function block, a second given function block, a third given function block, an adjustment function block, a comparison function block, a first multiplication function block, a second The quadratic function block, limiter function block and addition function block, the above-mentioned modules are connected to each other through cables and computer software to realize the electro-hydraulic servo control function, which can meet the control requirements of various signal-controlled servo valves (including proportional valves) in the hydraulic system. .

[0032] The input module accepts the output of the measuring device and the position transmitter, and is used to realize various on-site signal (such as 4-20mA DC) acquisition, analog-to-digital conversion and isolation.

[...

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PUM

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Abstract

The invention provides an electro-hydraulic servo control system, which comprises an input module, an output module, a first given function block, a second given function block, a third given function block, an adjusting function block, a comparison function block, a first multiplication function block, a second multiplication function block, an amplitude limiting function block and an addition function block, all of which are mutually connected through cables and computer software, so as to realize the servo control function and meet the control demand of various signal servo valves (including a proportional valve) of a hydraulic system. The electro-hydraulic servo control device provided by the invention can save 4-40 ten thousand RMB Yuan for each set of TRT (blast furnace top gas recovery turbine unit) project, increase the control precision and stability of the TRT machine set and lower the running maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of electro-hydraulic servo control of hydraulic systems, and in particular relates to a blast furnace gas residual pressure energy recovery turbine power generation (abbreviated as TRT) project and other electro-hydraulic servo control objects. Background technique [0002] Over the past 30 years, my country has introduced and domestically produced more than 400 TRT generator sets. TRT is an energy-saving and environmental protection project strongly promoted by the steel industry (see Figure 4 ), which utilizes the pressure difference between the top of the blast furnace and the gas main pipe to guide the blast furnace gas through the adjustable vane into the turbine to expand and do work, driving the generator to generate electricity, thereby reducing noise, wear and tear on the pressure reducing valve group The differential pressure that is consumed in the form of heat energy can be recovered. A TRT pro...

Claims

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Application Information

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IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 王贵良
Owner WISDRI ENG & RES INC LTD
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