Diagnosis device of valve and diagnosis method applying same

A diagnostic device and valve technology, applied in the direction of measuring devices, testing of mechanical components, testing of machine/structural components, etc.

Inactive Publication Date: 2013-09-18
ZHEJIANG SANFANG CONTROL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are no equipment and methods for dynamic performance detection of pneumatic valves and electric valves, only static characteristic test metho

Method used

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  • Diagnosis device of valve and diagnosis method applying same
  • Diagnosis device of valve and diagnosis method applying same
  • Diagnosis device of valve and diagnosis method applying same

Examples

Experimental program
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Embodiment Construction

[0012] Such as Figure 1 to Figure 7 As shown, according to the specific situation of the valve to be diagnosed, select the corresponding scheme, connect the pressure sensor, displacement sensor, current sensor, voltage sensor and strain sensor to the pneumatic valve or electric valve through a certain interface, and connect their signal lines It is connected with the control device for outputting control signals and collecting signals.

[0013] The diagnosis method is to output a step signal or ramp signal to the electric positioner, electric converter or electric actuator through the control device that outputs the control signal and the collection signal, and at the same time collect the pressure sensor, the displacement sensor, the current through a certain collection frequency The signal changes of sensors, voltage sensors and strain sensors form relevant signal curves such as pressure and displacement curves, displacement and torque curves, displacement and thrust curves...

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PUM

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Abstract

The invention discloses a diagnosis device of a valve. The diagnosis device comprises a control device for outputting a control signal and collecting signals, wherein the control device is respectively connected with a valve executing mechanism control signal input device, a valve rod position feedback signal obtaining device, a valve rod strain signal obtaining device and a plurality of valve executing mechanism driving source signal obtaining devices; the control device is used for outputting the control signal and collecting a corresponding valve rod position feedback signal, a valve rod strain signal, and valve executing mechanism driving source signals. The invention further discloses a diagnosis method applying the diagnosis device of the valve. According to the technology disclosed by the invention, the valve can be diagnosed in real time online, so that the safe and convenient diagnosis method is provided for the maintenance of the valve, and foundation for automatic control is further provided.

Description

technical field [0001] The present invention relates to a valve diagnosis technology, more specifically, relates to a performance diagnosis equipment and diagnosis method of pneumatic valves and electric valves, which are mainly used in the no-load and loaded working conditions of pneumatic valves and electric valves. Diagnosis technology of various performance indicators during the opening process and closing process; applied to the pre-factory inspection and online inspection of pneumatic and electric valves on key equipment in nuclear power, petrochemical, metallurgy, natural gas and other industries. Background technique [0002] At present, there are no equipment and methods for dynamic performance testing of pneumatic valves and electric valves, only static characteristic testing methods and valve leakage testing equipment methods. The present invention fills the gap in the dynamic performance testing of pneumatic valves and electric valves. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): G01M13/00G01R31/00
Inventor 林锋
Owner ZHEJIANG SANFANG CONTROL VALVE
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