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Method for detecting valve viscous jumping characteristic on basis of mode search

A pattern search and valve technology, which is applied to the testing of machines/structural components, measuring devices, instruments, etc., can solve problems such as time-consuming, labor-intensive, and smooth progress

Inactive Publication Date: 2010-09-29
XINGFENG TECH BEIJING +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is time-consuming and labor-intensive to conduct offline detection on so many valves in turn, which seriously restricts the smooth progress of process production

Method used

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  • Method for detecting valve viscous jumping characteristic on basis of mode search
  • Method for detecting valve viscous jumping characteristic on basis of mode search
  • Method for detecting valve viscous jumping characteristic on basis of mode search

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] (1) Specify the set value of the production process;

[0010] (2) Online measurement data;

[0011] (3) Data preprocessing, removing the linear component in the data and removing the average value;

[0012] (4) Send the data to the detection program, and obtain the value of the valve's viscosity jump characteristic parameter based on the pattern search;

[0013] (5) Regularly check the valve viscosity and jump characteristic parameters to ensure that the quality indicators of the production process are qualified.

Embodiment 2

[0015] (1) Specify the set value of the production process;

[0016] (2) Online measurement data;

[0017] (3) Data preprocessing, removing the linear component in the data and removing the average value;

[0018] (4) The data is sent to the detection program, based on the pattern search, the value of the valve viscosity jump characteristic parameter is obtained.

[0019] (5) Compare the detected value with the valve technical indicators to determine the valve performance. When the valve viscosity jump is higher than the engineering allowable value, the valve is removed from the process production link, separated, replaced with a new valve, or The valve is maintained.

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Abstract

The invention belongs to the fields of process control, valve performance detection and the like. Aiming to the valve viscous jumping characteristic in a process control loop, the invention discloses a method for detecting the valve viscous jumping characteristic on the basis of mode search. The method can be used for realizing effective detection of the valve viscous jumping degree, guiding apparatus maintenance in the production and realizing analysis, diagnosis and control on the performance of process loop. The method comprises contents in three aspects of application of a valve viscous jumping characteristic model, a processing structure of process data and a detection program of a valve viscous jumping characteristic parameter. The quantity value of the valve viscous jumping characteristic is obtained through the method, and the use performance of the valve is judged through comparing the detection quantity value with a valve technology index. When the valve viscous jumping quantity is higher than an engineering allowance valve, the valve needs to be detached and separated from the process production step, or a new valve is required or the valve needs maintaining.

Description

Technical field [0001] The field of the invention is process control, valve performance detection and other fields. Aiming at the valve sticky jump characteristics in the process control loop, a valve sticky jump characteristic detection method based on pattern search is proposed. This method can be used to effectively detect the degree of valve stickiness and jump, guide the maintenance and maintenance of equipment in production, and to realize the analysis, diagnosis and control of the process loop performance. Background technique [0002] Process control is a common industrial and agricultural production method, and in various process control valves that are widely used, its viscous jump characteristic is an important indicator of whether a valve is qualified. Generally speaking, in the initial stage of use of qualified valves, the amount of viscosity jump is very small, and different valves have different quantitative indicators. With the continuous use of the valve in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M19/00G01M99/00
Inventor 王建东王国华
Owner XINGFENG TECH BEIJING