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Regulating valve viscosity property analysis experimental apparatus

A technology of viscous characteristics and experimental devices, which is applied in the direction of measuring devices, instruments, and mechanical parts testing, etc. It can solve problems such as valve damage, uncontrollable output of working data, and uncontrollable data.

Active Publication Date: 2016-02-03
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

At present, one method of obtaining data is to collect data from actual industrial sites. The disadvantage is that the obtained data is uncontrollable and most of them need further processing.
The second method is to change the installation torque of the regulating valve seal to make it in a viscous state, but this method will cause damage to the valve, and it is impossible to controllably output the working data under different viscous states

Method used

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  • Regulating valve viscosity property analysis experimental apparatus
  • Regulating valve viscosity property analysis experimental apparatus

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Embodiment Construction

[0011] In order to have a clearer understanding of the technical features, purposes and application methods of the present invention, the specific implementation manners of the present invention will be further described in conjunction with the accompanying drawings.

[0012] Such as figure 1 As shown, the core of the experimental device for viscous characteristic analysis of a control valve provided by the present invention is the control valve 102 and the friction simulation component 104, in addition to the controller 101, the process object 103, the variable sensor 106 and the data Collector 105. The friction simulation part 104 is connected to the regulating valve 102, and can be adjusted to make the regulating valve 102 work in different viscous states; the regulating valve 102 and the friction simulation part 104 are also connected to the data collector 105, so as to record the valve position Signal and positive pressure value; the input side of the regulating valve 10...

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Abstract

The invention provides a regulating valve viscosity property analysis experimental apparatus, mainly comprising a regulating valve, a frictional force simulation component, a controller, a process object, a variable sensor and a data collector. The frictional force simulation component is adjustable to generate motion characteristics of different frictional forces, and includes a dynamic friction block which is in connection with the valve rod of the regulating valve through a rigid connection piece, equivalently adding an external frictional force to the valve rod, thereby simulating regulating valve viscosity properties. Controller output signals, valve position signals, process variable values and pressure values on the dynamic friction block are all collected and stored by the data collector, and can be used for researching the detection method and control compensation method for adjusting regulating valve viscosity properties.

Description

technical field [0001] The invention relates to an experimental platform for characteristic analysis of process control equipment, in particular to an experimental device for analyzing the viscous characteristic of a regulating valve. Background technique [0002] Control valves are the most commonly used actuators in industrial processes. Faults such as dead zone, stickiness, hysteresis, and saturation often occur during use. The dead zone and saturation characteristics are easy to detect, and the probability of their occurrence is not high as long as the selection is reasonable in practice. Viscous characteristics are the most common, with varying degrees of influence on the control loop, and its detection methods are complex. In the initial stage of use of the control valve, the friction between the valve stem and the sealing part is within a reasonable range, so a linear relationship is maintained between the control signal input to the valve and the actual position of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
Inventor 王志国刘飞赵忠盖栾小丽
Owner JIANGNAN UNIV
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