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System and method for diagnosing fault of adjusting valve

The technology of a fault diagnosis system and diagnosis method, which is applied in the direction of valve devices, engine components, mechanical equipment, etc., can solve the problems of difficult detection of regulating valve faults, difficult type identification, and inability to locate, so as to achieve reliable fault identification, type identification and positioning, Strong anti-disturbance and low cost effect

Inactive Publication Date: 2015-03-18
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the problems of difficult detection, difficult type identification and inability to locate existing regulating valves, and provides a regulating valve fault diagnosis system and method that can effectively detect and identify fault types, and then accurately locate

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  • System and method for diagnosing fault of adjusting valve
  • System and method for diagnosing fault of adjusting valve
  • System and method for diagnosing fault of adjusting valve

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Embodiment Construction

[0035] The present invention is described in detail below in conjunction with accompanying drawing:

[0036] Such as figure 1 As shown, the fault diagnosis system of the present invention is mainly composed of a regulating valve system 1, a data acquisition device 2, a fault diagnosis system 3 and a display device 4, wherein the fault diagnosis system 3 includes a data processing module 5, a fault detection and type identification module 6. Fault location module7.

[0037] Such as figure 2 As shown, the data acquisition device 2 of the present invention is by installing the first pressure sensor 8, the second pressure sensor 9, and the third pressure sensor 10 on the inlet of the pipeline 11 to collect the pressure signal before the regulating valve 12; Install the fourth pressure sensor 13; the fifth pressure sensor 14 and the sixth pressure sensor 15 to collect the pressure signal behind the regulating valve 12. The 6 sensors can realize the fluid dynamic monitoring of t...

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Abstract

The invention specifically discloses a system and a method for diagnosing the fault of an adjusting valve. The system comprises an adjusting valve system, a data acquisition device, a fault diagnosis system and a display device, wherein the adjusting valve system is connected with the data acquisition device, and the data acquisition device and the display device are respectively connected with the fault diagnosis system. The invention has the beneficial effects that the quality flow is taken as a base signal for diagnosing the fault, and the quality flow is higher in disturbance rejection compared with a pressure signal, so that the influence to a signal caused by the turning on and the turning off of the adjusting valve or the upper-pressure and lower-pressure fluctuation can be eliminated, and the reliability of fault diagnosis can be improved. The pressure data can be converted into the quality flow data due to the data process, and a quality flow acquisition sensor is replaced by a pressure acquisition sensor, so that the cost of the fault diagnosis system can be reduced.

Description

technical field [0001] The invention relates to a control valve fault diagnosis system, in particular to a control valve fault detection and positioning by analyzing the mass flow and mass flow gradient at the inlet and outlet of the control valve, and belongs to the technical field of control valve fault diagnosis. Background technique [0002] With the further development of industrial demand, fluid pipeline transportation is developing in the direction of larger flow and higher pressure. During the transportation of fluid (such as steam, gas, etc.), it usually needs to be mechanically compressed, pressurized and other measures before it can be carried out, which will inevitably lead to the instability of fluid pressure and velocity in the pipeline, causing pressure and velocity pulsation. Pressure pulsation and velocity pulsation are collectively referred to as fluid pulsation. As the most commonly used terminal fluid control element in the industrial production process,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K37/00
Inventor 安延涛马汝建王勇赵东张景春
Owner UNIV OF JINAN
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