Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Temperature and flow decoupling control structure and method

A technology of decoupling control and temperature controller, applied in non-electric variable control, control/regulation system, and simultaneous control of multiple variables, etc., can solve the problems of untimely control, inability to achieve precise control, divergence, etc.

Active Publication Date: 2016-07-27
BEIJING CENTURY ROBUST TECH
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that once the temperature or flow is disturbed or the set value is changed, all variables will be related by the coupling effect. When the fluctuation is large, the system is easy to oscillate or even diverge.
However, manual control cannot achieve precise control, and the control is not timely

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Temperature and flow decoupling control structure and method
  • Temperature and flow decoupling control structure and method
  • Temperature and flow decoupling control structure and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0161] In conjunction with the specific embodiments, the present invention is further explained as follows.

[0162] like Figure 5-8 As shown, the temperature and flow decoupling control of the mixed regeneration gas in the hydrogen dryer, the set value of the mixed regeneration gas temperature is TIC340197.SV, the measured value of the mixed regeneration gas temperature is TIC340197.PV; the set value of the mixed regeneration gas flow rate is FIC340195 .SV, mixed regeneration gas flow measurement value is FIC340195.PV.

[0163] (1) The flow rate is adjusted individually, such as Figure 6 shown.

[0164] In the original system, keep the temperature set value unchanged at 232°C, and when the flow set value increases from 1.5t / h to 1.8t / h, the maximum temperature deviation from the set value will be 10°C; the flow set value will change from 1.8t When / h is reduced to 1.5t / h, the maximum temperature deviation from the set value is 9.6°C.

[0165] After the decoupling contro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a temperature and flow decoupling control structure and method. According to the structure, two decoupling calculation blocks are additionally arranged in an original mixed material system, after output of a temperature controller and output of the decoupling calculation blocks are added together, the output acts on a hot-fluid regulating valve, and thus the temperature controller acts on adjustment of the percentage of a hot material flow in a total flow; after output of a flow controller and output of the decoupling calculation blocks are added together, the output acts on a cold-fluid regulating valve, and thus the flow controller acts on adjustment of the total flow of a mixed material, the flow is unchanged during temperature adjustment, the temperature is changed during flow adjustment, mutual interference is eliminated during simultaneous adjustment of the temperature and the flow, and a decoupling control effect is realized in such a way. For the purpose of improving the system operability, in such a structure, a temperature controller output and decoupling calculation block and a flow controller output and decoupling calculation block are connected with a decoupling control button, so that disturbance-free switching can be automatically completed when decoupling is put in service, abrupt change of the opening degrees of the regulating valves is prevented, and the stability of the mixed material system is enhanced.

Description

technical field [0001] The invention relates to a temperature and flow decoupling control structure and method, belonging to the technical field of chemical production automatic control. Background technique [0002] In the process of chemical production, some operating units require materials at a certain temperature and flow rate, and it is hoped that the temperature and flow rate of the materials will remain stable. against figure 1 The system shown, the material of the system is formed by the confluence of two streams of cold and hot materials. It can be seen from the figure that the change of one of the two feeds will affect the other feed, and the two feeds are interrelated. For example, increasing the temperature of the mixed material requires more hot material, which will increase the total flow rate. At this time, in order to ensure the flow stability of the mixed material, the cold material regulating valve will be closed, and the flow rate of the cold material w...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G05D27/02
CPCG05D27/02
Inventor 王文新李全善徐开慧焦阳
Owner BEIJING CENTURY ROBUST TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com