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Gas turbine switch quantity feedback trouble shooting method

A switching value and fault technology, which is applied in the field of gas turbine switching value feedback troubleshooting, and can solve the problems of gas turbine down-state and shutdown.

Active Publication Date: 2019-08-09
中国船舶重工集团公司第七〇三研究所无锡分部
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

In the actual operation of gas turbines, there are often operating failures such as downgrading and shutdown of gas turbines due to switching feedback measurement failures

Method used

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  • Gas turbine switch quantity feedback trouble shooting method

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention discloses a method for troubleshooting a gas turbine switching value feedback fault. When a certain switching value collected by the gas turbine control system is abnormal, the following troubleshooting should be performed:

[0012] Step 1: Check whether the ±24V DC voltage of the switch circuit power supply is normal. Use a multimeter to measure whether the circuit voltage is within the required range. If the measurement result is abnormal, check and replace the power supply.

[0013] Step 2: If the loop power supply is normal in step 1, unplug the signal plug connected to the switch feedback signal device, and short-circuit the signal plug A1 and A2 with a cable. The control system monitor panel shows that the switch feedback signal is 0 , The fault of the digital feedback annunciator can be eliminated at this time; if the control system monitoring panel shows that the digital feedback signal is 1, it can be judged that the ...

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Abstract

The invention discloses a gas turbine switch quantity feedback trouble shooting method. In a segmented trouble shooting method, a trouble point of a switch quantity feedback trouble is judged. The method can quickly shoot the switch quantity feedback trouble, and great significant is achieved for safe operation of the gas turbine.

Description

Technical field [0001] The invention belongs to the technical field of gas turbines, and particularly relates to a method for troubleshooting a gas turbine switch feedback fault. Background technique [0002] As a high-speed rotating machine, a gas turbine needs lubricating oil to lubricate and cool the bearings. If the lubricating oil pressure is too low, it will cause the bush to burn, which has an important safety impact on the gas turbine body; if the fuel inlet pressure is too low, it will cause the fuel pump to malfunction. Failures such as wear, flameout of the combustion chamber and combustion pulsation. Gas turbines often use on-off feedback to determine whether the pressure values ​​of the gas turbine are normal and the actuator positions are correct. In the actual operation of the gas turbine, there are often operating failures such as the gas turbine's derating or shutdown due to the switching feedback measurement failure. Summary of the invention [0003] The purpos...

Claims

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Application Information

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IPC IPC(8): G01R19/165G01R31/02G01R31/04G01R31/327G01R31/40
CPCG01R19/16538G01R19/16576G01R31/40G01R31/3278G01R31/66G01R31/50
Inventor 魏昌淼彭涛蔡其波商显耀
Owner 中国船舶重工集团公司第七〇三研究所无锡分部
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