CN113254879A - Method for calculating efficiency of gas compressor of gas turbine in real time - Google Patents
Method for calculating efficiency of gas compressor of gas turbine in real time Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
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Abstract
The invention relates to a gas turbine compressor, in particular to a method for calculating the efficiency of the gas turbine compressor in real time. The invention solves the problem that the existing gas turbine compressor efficiency calculation method influences the safe and stable operation of the gas turbine compressor. A method for calculating the efficiency of a gas compressor of a gas turbine in real time is realized by adopting the following steps: the method comprises the following steps: acquiring the operating parameters of a gas turbine compressor in real time by using a sensor arranged on the spot; step two: calculating an inlet and outlet temperature parameter t of a gas compressor of the gas turbine in real time; step three: calculating an inlet and outlet pressure parameter p of a gas compressor of the gas turbine in real time; step four: looking up the atmospheric temperature correction coefficient table in real time to obtain the atmospheric temperature correction coefficient C of the gas compressor of the gas turbineCT1(ii) a Looking up an inlet guide vane opening correction coefficient table in real time to obtain an inlet guide vane opening correction coefficient C of the gas turbine compressorIGV(ii) a Step (ii) ofFifthly: and calculating the efficiency eta of the gas compressor of the gas turbine in real time. The invention is suitable for the gas compressor of the gas turbine.
Description
Technical Field
The invention relates to a gas turbine compressor, in particular to a method for calculating the efficiency of the gas turbine compressor in real time.
Background
The efficiency of the gas turbine compressor can visually reflect the running condition of the gas turbine compressor. By calculating the efficiency of the gas turbine compressor, the dirt condition of the blades of the gas turbine compressor can be known, the running performance of the gas turbine compressor can be mastered, and reliable data reference is provided for the blade cleaning work of the gas turbine compressor. Under the prior art, the efficiency of a gas turbine compressor is calculated based on data acquired off-line. Due to the self principle, the calculation method can only calculate the efficiency of the gas compressor of the gas turbine in an off-line manner, but cannot calculate the efficiency of the gas compressor of the gas turbine in real time, so that working personnel cannot analyze the operation condition of the gas compressor of the gas turbine in real time, and the safe and stable operation of the gas compressor of the gas turbine is influenced. Therefore, the invention is needed to provide a method for calculating the efficiency of the gas compressor of the gas turbine in real time, so as to solve the problem that the existing method for calculating the efficiency of the gas compressor of the gas turbine influences the safe and stable operation of the gas compressor of the gas turbine.
Disclosure of Invention
The invention provides a method for calculating the efficiency of a gas turbine compressor in real time, aiming at solving the problem that the existing method for calculating the efficiency of the gas turbine compressor influences the safe and stable operation of the gas turbine compressor.
The invention is realized by adopting the following technical scheme:
a method for calculating the efficiency of a gas compressor of a gas turbine in real time is realized by adopting the following steps:
the method comprises the following steps: acquiring the operating parameters of a gas turbine compressor in real time by using a sensor arranged on the spot; the operating parameters include: inlet temperature T of gas turbine compressor1Outlet temperature T of gas compressor of gas turbine2Outlet pressure P of gas compressor of gas turbine1The atmospheric pressure P around the compressor of the gas turbine2The ambient temperature around the gas compressor of the gas turbine and the opening degree of an inlet guide vane of the gas compressor of the gas turbine;
step two: according to inlet temperature T of gas compressor of gas turbine1Outlet temperature T of compressor of gas turbine2Calculating an inlet and outlet temperature parameter t of a gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
step three: according to the outlet pressure P of the gas compressor of the gas turbine1And the atmospheric pressure P around the compressor of the gas turbine2Calculating an inlet and outlet pressure parameter p of a gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
in the formula: k represents the specific heat of air, and K is 1.4;
step four: according to atmosphere surrounding the compressor of the gas turbineThe atmospheric temperature correction coefficient table is consulted in real time by temperature to obtain the atmospheric temperature correction coefficient C of the gas compressor of the gas turbineCT1(ii) a Looking up an inlet guide vane opening correction coefficient table in real time according to the inlet guide vane opening of the gas turbine compressor to obtain an inlet guide vane opening correction coefficient C of the gas turbine compressorIGV；
Step five: according to the inlet and outlet temperature parameter t of the gas turbine compressor, the inlet and outlet pressure parameter p of the gas turbine compressor and the atmospheric temperature correction coefficient C of the gas turbine compressorCT1Inlet guide vane opening correction coefficient C of gas turbine compressorIGVCalculating the efficiency eta of the gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
compared with the existing method for calculating the efficiency of the gas turbine compressor, the method for calculating the efficiency of the gas turbine compressor in real time acquires the operation parameters of the gas turbine compressor (the inlet temperature T of the gas turbine compressor) in real time1Outlet temperature T of gas compressor of gas turbine2Outlet pressure P of gas compressor of gas turbine1The atmospheric pressure P around the compressor of the gas turbine2The atmospheric temperature around the gas turbine compressor, the opening degree of an inlet guide vane of the gas turbine compressor), and on the other hand, by introducing a correction coefficient of the gas turbine compressor (the atmospheric temperature correction coefficient C of the gas turbine compressor)CT1Inlet guide vane opening correction coefficient C of gas turbine compressorIGV) The efficiency of the gas turbine compressor is calculated in real time, so that the working personnel can analyze the operation condition of the gas turbine compressor in real time, and the safe and stable operation of the gas turbine compressor is effectively guaranteed.
The method effectively solves the problem that the existing method for calculating the efficiency of the gas turbine compressor influences the safe and stable operation of the gas turbine compressor, and is suitable for the gas turbine compressor.
Detailed Description
A method for calculating the efficiency of a gas compressor of a gas turbine in real time is realized by adopting the following steps:
the method comprises the following steps: by usingA sensor arranged on the site collects the operating parameters of the gas compressor of the gas turbine in real time; the operating parameters include: inlet temperature T of gas turbine compressor1Outlet temperature T of gas compressor of gas turbine2Outlet pressure P of gas compressor of gas turbine1The atmospheric pressure P around the compressor of the gas turbine2The ambient temperature around the gas compressor of the gas turbine and the opening degree of an inlet guide vane of the gas compressor of the gas turbine;
step two: according to inlet temperature T of gas compressor of gas turbine1Outlet temperature T of compressor of gas turbine2Calculating an inlet and outlet temperature parameter t of a gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
step three: according to the outlet pressure P of the gas compressor of the gas turbine1And the atmospheric pressure P around the compressor of the gas turbine2Calculating an inlet and outlet pressure parameter p of a gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
in the formula: k represents the specific heat of air, and K is 1.4;
step four: looking up an atmospheric temperature correction coefficient table in real time according to the atmospheric temperature around the gas compressor of the gas turbine to obtain an atmospheric temperature correction coefficient C of the gas compressor of the gas turbineCT1(ii) a Looking up an inlet guide vane opening correction coefficient table in real time according to the inlet guide vane opening of the gas turbine compressor to obtain an inlet guide vane opening correction coefficient C of the gas turbine compressorIGV；
Step five: according to the inlet and outlet temperature parameter t of the gas turbine compressor, the inlet and outlet pressure parameter p of the gas turbine compressor and the atmospheric temperature correction coefficient C of the gas turbine compressorCT1Inlet guide vane opening correction coefficient C of gas turbine compressorIGVCalculating the efficiency eta of the gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
the atmospheric temperature correction coefficient table is as follows:
| ambient temperature around the compressor of a gas turbine | Coefficient of correction of atmospheric temperature |
| -20℃ | 0.9731 |
| -10.2℃ | 0.9731 |
| 0℃ | 0.9851 |
| 8℃ | 0.9930 |
| 16.6℃ | 1.0000 |
| 25℃ | 1.0054 |
| 39.5℃ | 1.0121 |
| 50℃ | 1.0121 |
。
The inlet guide vane opening correction coefficient table is as follows:
| inlet guide vane opening of gas turbine compressor | Correction coefficient of inlet guide vane opening |
| -8deg | 1.0003 |
| 0deg | 1.0012 |
| 4deg | 1.0000 |
| 9deg | 0.9993 |
| 14deg | 0.9950 |
| 19deg | 0.9873 |
| 25deg | 0.9724 |
| 34deg | 0.9402 |
| 39deg | 0.9189 |
。
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that these are by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (3)
1. A method for calculating the efficiency of a gas compressor of a gas turbine in real time is characterized by comprising the following steps: the method is realized by adopting the following steps:
the method comprises the following steps: acquiring the operating parameters of a gas turbine compressor in real time by using a sensor arranged on the spot; the operating parameters include: inlet temperature T of gas turbine compressor1Outlet temperature T of gas compressor of gas turbine2Outlet pressure P of gas compressor of gas turbine1The atmospheric pressure P around the compressor of the gas turbine2The ambient temperature around the gas compressor of the gas turbine and the opening degree of an inlet guide vane of the gas compressor of the gas turbine;
step two: according to inlet temperature T of gas compressor of gas turbine1Outlet temperature T of compressor of gas turbine2Calculating an inlet and outlet temperature parameter t of a gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
step three: according to the outlet pressure P of the gas compressor of the gas turbine1And the atmospheric pressure P around the compressor of the gas turbine2Calculating an inlet and outlet pressure parameter p of a gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
in the formula: k represents the specific heat of air, and K is 1.4;
step four: looking up an atmospheric temperature correction coefficient table in real time according to the atmospheric temperature around the gas compressor of the gas turbine to obtain an atmospheric temperature correction coefficient C of the gas compressor of the gas turbineCT1(ii) a Looking up an inlet guide vane opening correction coefficient table in real time according to the inlet guide vane opening of the gas turbine compressor to obtain an inlet guide vane opening correction coefficient C of the gas turbine compressorIGV；
Step five: according to the inlet and outlet temperature parameter t of the gas turbine compressor, the inlet and outlet pressure parameter p of the gas turbine compressor and the atmospheric temperature correction coefficient C of the gas turbine compressorCT1Inlet guide vane opening correction coefficient C of gas turbine compressorIGVCalculating the efficiency eta of the gas compressor of the gas turbine in real time; the specific calculation formula is as follows:
2. the method for calculating the compressor efficiency of the gas turbine in real time according to claim 1, wherein the method comprises the following steps: the atmospheric temperature correction coefficient table is as follows:
。
3. The method for calculating the compressor efficiency of the gas turbine in real time according to claim 1 or 2, characterized in that: the inlet guide vane opening correction coefficient table is as follows:
。
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