Gas turbine lubricating oil system leakage point detection method
By adding an inert fluorescent agent tracer to the lubricant system, and using fluorescence detection tools to accurately locate the leakage points in the operating state of the gas turbine, the problem of difficulty in detecting the leakage points in the oil system in the operating state of the gas turbine in the prior art is solved, and efficient and safe leakage point detection is achieved.
Patent Information
- Application Number
- CN202510343942.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-22
- Publication Date
- 2025-06-17
AI Technical Summary
The prior art is difficult to efficiently detect leakage points of the lubricant system in the operating state of the gas turbine, resulting in low working efficiency and high safety risks.
By adding an inert fluorescent agent tracer to the lubricant system, and using fluorescent glasses or fluorescent detection lenses to detect the gas turbine in the unrun state, or patrolling through the monitoring system in the operation state, accurately positioning and recording the leakage point position.
It realizes rapid and effective detection of leakage points of the lubricant system without being affected by the operating status of the gas turbine, which improves work efficiency, ensures personnel safety, and reduces the loss of lubricant.
Smart Images
Figure CN120160769A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a gas turbine detection method, specifically a detection method for the lubricating oil system of a gas turbine. Background Art
[0002] Currently, in practical applications, visual inspection is mainly relied on to detect leaks in the lubricating oil system. Some leak points are located in blind spots of the field of vision, and relying on visual inspection reduces work efficiency. As a high-speed rotating machine, to ensure the safety of personnel and equipment, it is prohibited for personnel to approach during the operation of the gas turbine unit. Therefore, it is impossible to detect leak points in the lubricating oil system during operation by relying on visual inspection. Summary of the Invention
[0003] The purpose of the present invention is to provide a method for detecting leak points in the lubricating oil system of a gas turbine that can improve the detection efficiency of leak points in the lubricating oil system and is not affected by the operating state of the gas turbine.
[0004] The purpose of the present invention is achieved as follows:
[0005] A method for detecting leak points in the lubricating oil system of a gas turbine according to the present invention is characterized in that:
[0006] Before the lubricating oil system is started, determine the amount of lubricating oil in the fuel tank; according to the amount of lubricating oil, add an inert fluorescent tracer into the lubricating oil tank of the lubricating oil system, and start the circulation pump in the oil station to conduct oil circulation for more than 8 hours to ensure that the inert fluorescent tracer is fully mixed with the lubricating oil;
[0007] After the lubricating oil system starts to operate, the inert fluorescent tracer flows throughout the entire lubricating oil system along with the lubricating oil:
[0008] When the gas turbine is in a non-operating state, the inspection personnel wear fluorescent glasses to inspect each part of the lubricating oil system. First, inspect the pipeline of the lubricating oil system in the low-temperature area. When the inspection personnel see the color of the fluorescent tracer through the fluorescent glasses, record the position of the leak point. Then, the inspection personnel inspect the pipeline of the lubricating oil system in the high-temperature area. When the inspection personnel see the color of the fluorescent tracer through the fluorescent glasses, record the position of the leak point; repair the recorded leak points in the lubricating oil system.
[0009] The present invention may further include:
[0010] 1. Install a fluorescent detection lens near the lubricating oil system of the gas turbine. When the gas turbine is in an operating state, the inspection personnel conduct patrol monitoring of each part of the lubricating oil system by controlling the fluorescent detection lens.
[0011] 2. Inspect the lubricating oil system pipelines in the low-temperature area. When the color of the fluorescent tracer is found on the monitoring system screen, record the location of the leak point; and evaluate the leak point. If the leakage is small and does not affect the stable operation of the unit, the inspection personnel continue to observe it, and repair the leak point after the unit shuts down after completing the corresponding task; if the leakage of the leak point is large, it will cause a large loss of lubricating oil, and the leakage of lubricating oil will affect the operation safety of the unit, execute the shutdown procedure; after the unit shuts down, repair the leak point in the low-temperature area.
[0012] 3. Inspect the lubricating oil system pipelines in the high-temperature area. When the color of the fluorescent tracer is found on the monitoring system screen, record the location of the leak point; and evaluate the leak point. If the leakage is small and does not affect the stable operation of the unit, the inspection personnel continue to observe it, and repair the leak point after the unit shuts down after completing the corresponding task; if the leakage of the leak point is large, it will cause a large loss of lubricating oil, and the leakage of lubricating oil will affect the operation safety of the unit, execute the shutdown procedure; after the unit shuts down, wait for the unit to cool down to a safe temperature before repairing the leak point in the high-temperature area lubricating oil system.
[0013] 4. The inert fluorescent tracer meets the following conditions:
[0014] (1) After being mixed with the lubricating oil, it does not change the particle size, acid value and lubricating effect of the lubricating oil;
[0015] (2) It does not undergo a chemical reaction after being mixed with the lubricating oil;
[0016] (3) It does not cause damage to the lubricating oil system pipelines;
[0017] (4) It does not cause damage to the gas turbine bearings;
[0018] (5) Its fluorescence characteristics do not disappear under the condition of 5 - 120 °C.
[0019] The advantages of the present invention are as follows: Without being affected by the operating state of the gas turbine, the present invention can quickly and effectively locate the leak point in the lubricating oil system accurately, improve the work efficiency, ensure the safety of personnel to a great extent, and reduce the loss of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a flow chart of the present invention;
[0021] Figure 2 is a schematic diagram of the temperature in the operating area of the gas turbine. DETAILED DESCRIPTION OF THE INVENTION
[0022] The present invention will be described in more detail with reference to the accompanying drawings as follows:
[0023] Combined with Figure 1-2, the leakage points of the lubricating oil system are caused by some reasons, such as the vibration generated during the operation of the gas turbine, the improper fastening during the assembly of the pipeline connection, or the poor sealing at some positions, etc.; the above reasons will all lead to oil seepage or leakage, resulting in unnecessary lubricating oil loss. The method of the present invention utilizes the special visual color of the inert fluorescent tracer to quickly locate the leakage points of the lubricating oil system and solve the problem that the leakage points of the lubricating oil system cannot be detected when the gas turbine is in operation. By mixing the fluorescent tracer with the lubricating oil, the fluorescent tracer enters the lubricating oil system along with the lubricating oil. If there is a leakage point of the lubricating oil, the detector can find the leakage point through the fluorescent detection equipment.
[0024] The inert fluorescent tracer used in the method of the present invention needs to meet the following conditions:
[0025] (1) It does not change the particle size, acid value and lubricating effect of the lubricating oil after being mixed with the lubricating oil;
[0026] (2) It undergoes a chemical reaction after being mixed with the lubricating oil;
[0027] (3) It does not cause damage to the pipeline of the lubricating oil system;
[0028] (4) It does not cause damage to the bearings of the gas turbine;
[0029] (5) Its fluorescence characteristics do not disappear under the condition of 5 - 120 °C.
[0030] Before starting the lubricating oil system, determine the amount of lubricating oil in the fuel tank; according to the amount of lubricating oil, add the inert fluorescent tracer into the lubricating oil tank of the lubricating oil system according to a certain ratio, and start the circulation pump in the oil station to conduct oil circulation for more than 8 hours to ensure that the inert fluorescent tracer is fully mixed with the lubricating oil.
[0031] After the lubricating oil system starts to operate, the inert fluorescent agent flows throughout the lubricating oil system along with the lubricating oil.
[0032] When the gas turbine is in the non - operating state, the detector wears fluorescent glasses to check each part of the lubricating oil system. First, check the pipeline of the lubricating oil system in the low - temperature area. When the detector sees the special color of the fluorescent tracer through the fluorescent glasses, record the position of the leakage point. Then the detector checks the pipeline of the lubricating oil system in the high - temperature area. When the detector sees the special color of the fluorescent tracer through the fluorescent glasses, record the position of the leakage point. The relevant professionals repair the recorded leakage points of the lubricating oil system.
[0033] When the gas turbine is in the operating state, since there is a high - temperature area near the unit and the unit operation will generate noise; to ensure the safety of the detector and prevent safety accidents, the detector conducts patrol monitoring of each part of the lubricating oil system by controlling the fluorescent detection lens.
[0034] (1) Inspect the lubricating oil system pipeline in the low-temperature area. When the special color of the fluorescent tracer is found on the monitoring system screen, record the location of the leak point; and evaluate the leak point. If the leakage is very small and does not affect the stable operation of the unit, the inspection personnel need to continue observing it, and repair the leak point after the unit shuts down after completing the corresponding task; if the leakage of the leak point is large, it will cause a large loss of lubricating oil, and the leakage of lubricating oil will affect the operation safety of the unit, and the shutdown procedure must be executed immediately; after the unit shuts down, repair the leak point in the low-temperature area.
[0035] (2) Inspect the lubricating oil system pipeline in the high-temperature area. When the special color of the fluorescent tracer is found on the monitoring system screen, record the location of the leak point; and evaluate the leak point. If the leakage is very small and does not affect the stable operation of the unit, the inspection personnel need to continue observing it, and repair the leak point after the unit shuts down after completing the corresponding task; if the leakage of the leak point is large, it will cause a large loss of lubricating oil, and the leakage of lubricating oil will affect the operation safety of the unit, and the shutdown procedure must be executed immediately; after the unit shuts down, wait for the unit to cool down to a safe temperature before repairing the leak point of the lubricating oil system in the high-temperature area.
Claims
1. A method for detecting leakage points in a gas turbine lubricating oil system, characterized in that: Before starting the lubricating oil system, determine the amount of lubricating oil in the oil tank; according to the amount of lubricating oil, add the inert fluorescent tracer into the lubricating oil tank of the lubricating oil system, and start the circulation pump in the oil station to circulate the oil for more than 8 hours to ensure that the inert fluorescent tracer is fully mixed with the lubricating oil; After the lubricating oil system starts running, the inert fluorescent agent flows with the lubricating oil throughout the lubricating oil system: When the gas turbine is not in operation, the inspectors wear fluorescent glasses to check various parts of the lubricating oil system. First, the lubricating oil system pipelines located in the low-temperature area are checked. When the inspectors see the color of the fluorescent tracer through the fluorescent glasses, the location of the leak is recorded. Then the inspectors check the lubricating oil system pipelines located in the high-temperature area. When the inspectors see the color of the fluorescent tracer through the fluorescent glasses, the location of the leak is recorded; the recorded lubricating oil system leaks are repaired.
2. A method for detecting leakage points in a gas turbine lubricating oil system according to claim 1, characterized in that: A fluorescent detection lens is installed near the gas turbine lubricating oil system. When the gas turbine is in operation, the inspection personnel patrol and monitor various parts of the lubricating oil system by controlling the fluorescent detection lens.
3. A method for detecting leakage points in a gas turbine lubricating oil system according to claim 2, characterized in that: Check the lubricating oil system pipelines located in the low-temperature area. When the color of the fluorescent tracer is found on the monitoring system screen, record the location of the leak and evaluate the leak. If the leakage is small and does not affect the stable operation of the unit, the inspection personnel will continue to observe it and repair the leak after the unit completes the corresponding task and shuts down. If the leakage is large and will cause a large loss of lubricating oil, and the leakage of lubricating oil will affect the safe operation of the unit, execute the shutdown procedure; after the unit is shut down, repair the leak in the low-temperature area.
4. A method for detecting leakage points in a gas turbine lubricating oil system according to claim 2, characterized in that: Check the lubricating oil system pipelines located in the high-temperature area. When the color of the fluorescent tracer is found on the monitoring system screen, record the location of the leak and evaluate the leak. If the leakage is small and does not affect the stable operation of the unit, the inspection personnel will continue to observe it and repair the leak after the unit completes the corresponding task and shuts down. If the leakage is large and will cause a large loss of lubricating oil, and the leakage of lubricating oil will affect the safe operation of the unit, execute the shutdown procedure; after the unit is shut down, wait for the unit to cool to a safe temperature before repairing the leak in the lubricating oil system in the high-temperature area.
5. A method for detecting leakage points in a gas turbine lubricating oil system according to claim 1, characterized in that: The inert fluorescent agent tracer meets the following conditions: (1) After mixing with lubricating oil, the particle size, acid value and lubricating effect of the lubricating oil will not be changed; (2) No chemical reaction occurs after mixing with lubricating oil; (3) No damage to the lubricating oil system pipelines; (iv) not causing damage to gas turbine bearings; (V) The fluorescence characteristics do not disappear under the conditions of 5-120°C.