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A troubleshooting method for switching quantity feedback of a gas turbine

A switching quantity and fault technology, which is applied in the field of gas turbine switching quantity feedback fault troubleshooting, can solve the problems of gas turbine down conditions and shutdown, and achieve the effect of rapid and effective investigation.

Active Publication Date: 2021-10-15
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
  • Claims
  • Application Information

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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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  • A troubleshooting method for switching quantity feedback of a gas turbine

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Embodiment Construction

[0011] Such as figure 1 As shown, the present invention discloses a gas turbine switching value feedback troubleshooting method. When the gas turbine control system collects a certain switching value abnormally, the following troubleshooting should be carried out:

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

[0013] Step 2, if step 1 checks that the loop power supply is normal, unplug the signal plug connected to the switch feedback signal device, and use a cable to short-circuit the two terminals of the signal plug A1 and A2, and the control system monitoring panel will display that the switch feedback signal is 0 , at this time, the fault of the switch feedback annunciator can be ruled out; if the control system monitoring panel shows that the switch feedbac...

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Abstract

The invention discloses a gas turbine switching value feedback fault troubleshooting method. The fault point of the switching value feedback fault is determined through the segmented screening method. The method can quickly and effectively troubleshoot the switching value feedback fault, and is of great significance to the safe operation of the gas turbine.

Description

technical field [0001] The invention belongs to the technical field of gas turbines, and in particular relates to a troubleshooting method for gas turbine switching value feedback faults. Background technique [0002] As a high-speed rotating machine, a gas turbine needs lubricating oil to lubricate and cool the bearings. If the pressure of the lubricating oil is too low, it will cause burning of the bearing bush, which will have an important safety impact on the gas turbine body; if the pressure of the fuel inlet is too low, it will cause the fuel pump to fail Wear and tear, combustion chamber flameout, combustion pulsation and other failures. Gas turbines often use switch feedback to judge whether the pressure values ​​of the gas turbine are normal and whether the position of the actuator is correct. During the actual operation of gas turbines, there are often operational failures such as downgrading and shutdown of gas turbines due to switching feedback measurement failu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R19/165G01R31/54G01R31/66G01R31/327G01R31/40
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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