CN114235423A - Method for detecting faults of gas turbine lubricating oil supply system - Google Patents
Method for detecting faults of gas turbine lubricating oil supply system Download PDFInfo
- Publication number
- CN114235423A CN114235423A CN202111519911.1A CN202111519911A CN114235423A CN 114235423 A CN114235423 A CN 114235423A CN 202111519911 A CN202111519911 A CN 202111519911A CN 114235423 A CN114235423 A CN 114235423A
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- China
- Prior art keywords
- lubricating oil
- oil supply
- gas turbine
- temperature
- supply system
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000003921 oil Substances 0.000 claims abstract description 11
- 230000002159 abnormal effect Effects 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 239000010723 turbine oil Substances 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention aims to provide a method for detecting faults of a gas turbine lubricating oil supply system, which comprises the following steps: and establishing lubricating oil supply pressure, temperature, rotating speed and oil return temperature curves of all working conditions of the lubricating oil system in a normal state, and establishing an upper boundary, a lower boundary and a control center line. And detecting the real-time states of the parameters of the power, the rotating speed, the lubricating oil supply pressure, the temperature and the oil return temperature of the gas turbine, and judging condition rules aiming at the abnormal alarm of the lubricating oil supply system of the gas turbine. And when the lubricating oil supply pressure is reduced or the lubricating oil supply temperature is increased and the unit power and the rotating speed stably meet the SPC detection rule, judging that the lubricating oil supply system of the gas turbine is abnormal. The method can effectively detect the faults of the gas turbine lubricating oil supply system, and is a simple, efficient, accurate and real-time method for detecting the abnormal gas turbine lubricating oil supply.
Description
Technical Field
The invention relates to a gas turbine detection method, in particular to a gas turbine lubricating oil detection method.
Background
The lubricating oil system of the gas turbine is used for providing proper lubricating oil for the gas turbine so as to meet the requirements of the gas turbine on lubrication, cooling and regulation during normal operation, and takes away heat transmitted by friction and high-temperature parts so as to maintain the normal operating temperature range of parts and prolong the service life of the parts.
If the lubricating oil system is abnormal, the bearing is abraded and other faults can be caused, and the unit can be scrapped seriously.
Disclosure of Invention
The invention aims to provide a method for detecting faults of a gas turbine lubricating oil supply system, which can effectively detect the faults of the gas turbine lubricating oil supply system.
The purpose of the invention is realized as follows:
the invention discloses a method for detecting faults of a gas turbine lubricating oil supply system, which is characterized by comprising the following steps:
(1) establishing lubricating oil supply pressure, temperature, rotating speed and oil return temperature curves of all working conditions of a lubricating oil system in a normal state, and establishing an upper boundary, a lower boundary and a control center line;
(2) detecting the real-time states of the power, the rotating speed, the lubricating oil supply pressure, the temperature and the oil return temperature parameters of the gas turbine;
(3) and (3) aiming at the abnormity alarm judgment condition rule of the gas turbine lubricating oil supply system, when the lubricating oil supply pressure is reduced or the lubricating oil supply temperature is increased and the unit power and the rotating speed stably accord with the SPC detection rule, judging that the gas turbine lubricating oil supply system is abnormal.
The present invention may further comprise:
1. the control center line is the average value of the historical normal operation process curve, the upper boundary is the control center line plus 3 times of standard deviation counted according to historical data, and the lower boundary is the control center line minus 3 times of standard deviation counted according to historical data.
The invention has the advantages that: the method can effectively detect the faults of the gas turbine lubricating oil supply system, and is a simple, efficient, accurate and real-time method for detecting the abnormal gas turbine lubricating oil supply.
Drawings
FIG. 1 is a gas turbine oil system parameter control curve;
FIG. 2 is a flow chart of the identification of the supply condition of the oil during operation of the gas turbine;
fig. 3 is a flowchart of abnormality detection of the gas turbine oil supply system.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-3, the practice of the present invention includes the following steps:
and establishing lubricating oil supply pressure, temperature, rotating speed and oil return temperature curves of all working conditions of the lubricating oil system in a normal state, and establishing an upper boundary, a lower boundary and a control center line.
All unit parameters related to the lubricating oil system during the operation of the combustion engine are selected, and a normal operation lubricating oil supply pressure, temperature, rotating speed and oil return temperature curve established by using historical data of the combustion engine comprises an upper boundary, a lower boundary and a control center line.
The control center line is the average value of the historical normal operation process curve, the upper boundary is the control center line plus 3 times of standard deviation counted according to historical data, and the lower boundary is the control center line minus 3 times of standard deviation counted according to historical data. Wherein the value of 3 is adjusted according to actual data. This process can be performed off-line.
And detecting the real-time states of the parameters of the power, the rotating speed, the lubricating oil supply pressure, the temperature and the oil return temperature of the gas turbine.
(1) Collecting parameters of power, rotating speed, lubricating oil supply pressure, temperature and oil return temperature of the gas turbine in the actual operation process of the gas turbine;
(2) preprocessing the collected unit operation data, and calculating the rotating speed of the corresponding gas turbine, the supply pressure of lubricating oil and the temperature;
(3) according to historical experience, a data state detection rule in a quality control chart theory (SPC rule) is selected, and real-time change states of supply pressure and temperature of lubricating oil of the unit are monitored.
And judging the abnormality of the gas turbine oil supply system.
And aiming at the abnormity alarm judgment condition rule of the gas turbine lubricating oil supply system, when the lubricating oil supply pressure is reduced or the lubricating oil supply temperature is increased and the power and the rotating speed of the unit stably meet the detection rule, judging that the gas turbine lubricating oil supply system is abnormal.
Claims (2)
1. A method for detecting faults of a gas turbine lubricating oil supply system is characterized by comprising the following steps:
(1) establishing lubricating oil supply pressure, temperature, rotating speed and oil return temperature curves of all working conditions of a lubricating oil system in a normal state, and establishing an upper boundary, a lower boundary and a control center line;
(2) detecting the real-time states of the power, the rotating speed, the lubricating oil supply pressure, the temperature and the oil return temperature parameters of the gas turbine;
(3) and (3) aiming at the abnormity alarm judgment condition rule of the gas turbine lubricating oil supply system, when the lubricating oil supply pressure is reduced or the lubricating oil supply temperature is increased and the unit power and the rotating speed stably accord with the SPC detection rule, judging that the gas turbine lubricating oil supply system is abnormal.
2. The method of claim 1, wherein the method comprises: the control center line is the average value of the historical normal operation process curve, the upper boundary is the control center line plus 3 times of standard deviation counted according to historical data, and the lower boundary is the control center line minus 3 times of standard deviation counted according to historical data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111519911.1A CN114235423A (en) | 2021-12-13 | 2021-12-13 | Method for detecting faults of gas turbine lubricating oil supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111519911.1A CN114235423A (en) | 2021-12-13 | 2021-12-13 | Method for detecting faults of gas turbine lubricating oil supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114235423A true CN114235423A (en) | 2022-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111519911.1A Pending CN114235423A (en) | 2021-12-13 | 2021-12-13 | Method for detecting faults of gas turbine lubricating oil supply system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114235422A (en) * | 2021-12-13 | 2022-03-25 | 中国船舶重工集团公司第七0三研究所 | Method for detecting abnormal starting of gas turbine |
| CN114252216A (en) * | 2021-12-13 | 2022-03-29 | 中国船舶重工集团公司第七0三研究所 | Method for detecting leakage of lubricating oil of gas turbine |
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2021
- 2021-12-13 CN CN202111519911.1A patent/CN114235423A/en active Pending
Patent Citations (13)
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