CN115372006A - Gas turbine low pressure turbine rear temperature field monitoring system - Google Patents
Gas turbine low pressure turbine rear temperature field monitoring system Download PDFInfo
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- CN115372006A CN115372006A CN202210812882.6A CN202210812882A CN115372006A CN 115372006 A CN115372006 A CN 115372006A CN 202210812882 A CN202210812882 A CN 202210812882A CN 115372006 A CN115372006 A CN 115372006A
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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Abstract
The application discloses a temperature field monitoring system behind a low-pressure turbine of a gas turbine, which relates to the field of the gas turbine, wherein each thermocouple in the system is respectively arranged at a flame tube of a combustion chamber of the gas turbine, all the thermocouples are connected to a thermocouple junction box, each thermocouple respectively collects the single-point gas temperature at each flame tube and transmits the single-point gas temperature to the thermocouple junction box, and a temperature control device executes overtemperature shutdown protection when detecting that the average gas temperature of all the single-point gas temperatures is in an overtemperature abnormal state, so that the gas overtemperature has great damage to heat components of the gas turbine, and the safety is improved; the temperature field monitoring assembly outputs an alarm signal when detecting that the uniformity of the gas temperature field is in an abnormal state according to all single-point gas temperatures, and prompts to check and adjust the uniformity of the gas temperature field, so that the turbine blade is prevented from being subjected to high thermal stress, and the temperature field monitoring assembly has important significance for stable operation of a gas turbine.
Description
Technical Field
The application relates to the field of gas turbines, in particular to a monitoring system for a temperature field behind a low-pressure turbine of a gas turbine.
Background
The gas turbine is widely applied to the fields of ship power, ship power generation and the like as high-speed rotating power equipment. The gas turbine utilizes high-temperature gas generated by burning fuel in the combustion chamber to enter the gas turbine to propel the impeller to operate and do work, and if the combustion temperature field of the provided high-temperature gas is improper, the gas turbine is easy to damage heat components and turbine blades of the gas turbine, and the stable operation of the gas turbine is influenced.
Disclosure of Invention
In view of the above problems and technical needs, the present applicant proposes a monitoring system for a temperature field behind a low-pressure turbine of a gas turbine, and the technical scheme of the present application is as follows:
a temperature field monitoring system behind a low-pressure turbine of a gas turbine comprises a plurality of thermocouples, a thermocouple junction box, a temperature control device and a temperature field monitoring assembly;
each thermocouple is arranged at one flame tube of a combustion chamber of the gas turbine, all the thermocouples are connected to a thermocouple junction box, and the thermocouple junction boxes are connected with a temperature control device and a temperature field monitoring assembly respectively;
the thermocouples respectively collect the single-point gas temperatures at the flame tubes and transmit the single-point gas temperatures to the thermocouple junction box, the thermocouple junction box calculates the average value of all the single-point gas temperatures to obtain an average gas temperature and provides the average gas temperature to the temperature control device, and the temperature control device executes overtemperature shutdown protection when detecting that the average gas temperature is in an overtemperature abnormal state;
the thermocouple junction box further transmits the single-point gas temperature collected by all the thermocouples to the temperature field monitoring assembly, and the temperature field monitoring assembly outputs an alarm signal when detecting that the uniformity of the gas temperature field is in an abnormal state according to the single-point gas temperature.
The further technical scheme is that the temperature control device comprises a temperature control assembly and a temperature regulator, the temperature control assembly executes overtemperature shutdown protection when detecting that the average gas temperature is in an overtemperature abnormal state, the temperature regulator executes overtemperature shutdown protection when detecting that the average gas temperature is in the overtemperature abnormal state, and the temperature control assembly and the temperature regulator independently detect to realize dual-redundancy temperature control.
The further technical scheme is that the overtemperature shutdown protection is executed when the temperature field monitoring assembly detects that the average gas temperature is in an overtemperature abnormal state according to all single-point gas temperatures, and the temperature control assembly, the temperature regulator and the temperature field monitoring assembly independently detect to realize triple redundancy temperature control.
The further technical scheme is that the method for outputting the alarm signal by the temperature field monitoring component comprises the following steps:
when at least one abnormal single-point temperature is detected, determining that the uniformity of the gas temperature field is in an abnormal state, and outputting an alarm signal indicating the abnormal single-point temperature; and the abnormal single-point temperature is the single-point gas temperature at which the temperature difference between the abnormal single-point temperature and the average gas temperature reaches the temperature deviation threshold value under the corresponding working condition.
The further technical scheme is that before the temperature field monitoring assembly outputs an alarm signal indicating abnormal single-point temperature, the method executed by the system further comprises the following steps:
the input end of the thermocouple junction box acquires a standard temperature signal of a thermocouple corresponding to the abnormal single-point temperature to replace the abnormal single-point temperature;
if the average gas temperature is still in an overtemperature abnormal state and/or the uniformity of the gas temperature field is still in an abnormal state at the moment, outputting a first inspection indicating signal, wherein the first inspection indicating signal is used for indicating the working states of an inspection temperature control device, a temperature field monitoring assembly and a connecting circuit;
if the average gas temperature is in a normal state and the uniformity of the gas temperature field is also in a normal state, outputting a second troubleshooting indicating signal, wherein the second troubleshooting indicating signal is used for indicating the working state of the thermocouple corresponding to the abnormal single-point temperature for troubleshooting;
when the temperature field monitoring assembly receives a normal state feedback signal responding to the first examination indication signal or the second examination indication signal, an alarm signal indicating abnormal single-point temperature is output, and the normal state feedback signal is used for indicating that the working states of the temperature control device, the temperature field monitoring assembly and the connecting circuit are normal or indicating that the working state of a thermocouple corresponding to the abnormal single-point temperature is normal.
Its further technical scheme does, and temperature field monitoring subassembly output alarm signal includes:
in the empty condition, if
And T 2 ≤|Δt j |<T err The temperature field monitoring component outputs a lower deviation alarm signal which is used for indicating the abnormal single-point temperature t j The abnormal nozzle performance at the corresponding flame tube causes abnormal low single-point temperature;
under nominal operating conditions, if
And T 2 ≤|Δt j |<T err The temperature field monitoring component outputs a lower deviation alarm signal; if it is
And T 1 ≤|Δt j |<T err The temperature field monitoring component outputs an upper deviation alarm signal which is used for indicating the abnormal single-point temperature t j The abnormal nozzle performance at the corresponding flame tube causes abnormal high single-point temperature;
wherein, | Δ t j I is the single point gas temperature t j And average gas temperature
Absolute value of the temperature difference between, T 1 Is a deviation threshold over temperature, T 2 Is a deviation threshold at temperature, T err Is a temperature fault deviation threshold.
The further technical proposal is that if the absolute value is delta t j |≥T err The temperature field monitoring component outputs a fault deviation signal which is used for indicating the abnormal single-point temperature t j Nozzle failure at the corresponding flame tube.
The further technical scheme is that the temperature control assembly is also used for executing flameout shutdown protection when the average gas temperature is detected to be in a low-temperature abnormal state.
The further technical scheme is that the temperature field monitoring assembly is also used for displaying the single-point gas temperature of each flame tube in real time.
The further technical scheme is that when the temperature control device detects that the average gas temperature in the starting process and the working condition running process exceeds the corresponding temperature threshold value, the average gas temperature is determined to be in an overtemperature abnormal state, and overtemperature shutdown protection is executed.
The beneficial technical effect of this application is:
the application discloses temperature field monitored control system behind gas turbine low pressure turbine, the overtemperature abnormal condition can realize fast shutting down the protect function when low pressure turbine back combustion gas temperature appears, avoid the gas overtemperature to have great damage to gas turbine heat part, the security is improved, and when gas temperature field homogeneity is in abnormal condition, can in time send alarm signal in order to indicate the homogeneity of maintainer in time inspection and adjustment gas temperature field, avoid turbine blade to receive high thermal stress, it is significant to the steady operation of gas turbine.
The system can realize triple redundancy rapid shutdown protection function by utilizing the temperature control assembly, the temperature regulator and the temperature field monitoring assembly, and has high reliability.
Drawings
FIG. 1 is a system block diagram of a temperature field monitoring system behind a low-pressure turbine of a gas turbine and a functional schematic diagram of each component implementation according to one embodiment of the application.
Detailed Description
The following description of the embodiments of the present application refers to the accompanying drawings.
The application discloses a temperature field monitoring system behind a low-pressure turbine of a gas turbine, please refer to fig. 1, and the system comprises a plurality of thermocouples 1, a thermocouple junction box 2, a temperature control device and a temperature field monitoring assembly 3. Each thermocouple 1 is arranged at one flame tube 4 of the combustion chamber of the gas turbine, and as shown in fig. 1, the thermocouple 1 comprises 16 flame tubes, and 16 thermocouples 1 are arranged respectively.
All the thermocouples 1 are connected to a thermocouple junction box 2, and fig. 1 shows only a portion of the connection relationship between the thermocouples 1 and the thermocouple junction box 2 for simplicity. And each thermocouple 1 respectively collects the single-point gas temperature of each flame tube 4 and transmits the single-point gas temperature to the thermocouple junction box 2.
The thermocouple junction box 2 is respectively connected with a temperature control device and a temperature field monitoring assembly. The thermocouple junction box calculates the average value of all single-point gas temperatures to obtain the average gas temperature
And the average gas temperature is provided for a temperature control device, and the temperature control device executes overtemperature shutdown protection when detecting that the average gas temperature is in an overtemperature abnormal state. In one embodiment, the temperature control device determines that the average gas temperature is in an overtemperature abnormal state and executes overtemperature shutdown protection when detecting that the average gas temperature in the starting process and the working condition running process exceeds corresponding temperature thresholds. For example, in one example, when the average gas temperature during the starting process is detected to exceed 600 ℃ and the average gas temperature during the working condition operation process exceeds 820 ℃, the average gas temperature is determined to be in an overtemperature abnormal state and the overtemperature shutdown protection is executed.
The temperature control device comprises a temperature control assembly 5 and a temperature regulator 6, wherein the temperature control assembly 5 detects the average gas temperature
When the temperature regulator is in an overtemperature abnormal state, the overtemperature shutdown protection is executed, and the temperature regulator 6 detects the average gas temperature
And executing overtemperature shutdown protection when the vehicle is in an overtemperature abnormal state. The method for detecting whether the average gas temperature is in the overtemperature abnormal state by the temperature control assembly 5 and the temperature regulator 6 is the same, namely the detection method of the temperature control device described above, and the temperature control assembly 5 and the temperature regulator 6 independently detect to realize dual redundant temperature control.
In addition to performing the over-temperature shutdown protection at the time of the over-temperature abnormal state, the temperature control assembly 5 is also configured to perform the flameout shutdown protection at the time of detecting that the average gas temperature is in the low-temperature abnormal state. In one example, for instance, when an average gas temperature below 200 ℃ is detected, a loss of flame is determined and flameout shutdown protection is implemented.
The thermocouple junction box 2 also transmits the single-point gas temperature collected by all the thermocouples 1 to the temperature field monitoring assembly 3, and the temperature field monitoring assembly 3 outputs an alarm signal when detecting that the uniformity of the gas temperature field is in an abnormal state according to all the single-point gas temperatures.
In addition to outputting the alarm signal, the temperature field monitoring assembly 3 executes the overtemperature shutdown protection when detecting that the average gas temperature is in the overtemperature abnormal state according to all the single-point gas temperatures. The method for detecting whether the average gas temperature is in the overtemperature abnormal state by the temperature field monitoring assembly 3 is the same as the detection method of the temperature control assembly 5 and the temperature regulator 6, and the temperature control assembly 5, the temperature regulator 6 and the temperature field monitoring assembly 3 independently detect to realize triple redundant temperature control. In addition, the temperature field monitoring assembly 3 also has a display function and is used for displaying the single-point gas temperature at each flame tube in real time.
The method for outputting the alarm signal by the temperature field monitoring assembly 5 is as follows:
determining the average gas temperature of each single-point gas temperature and all single-point gas temperatures
Temperature difference of (a), single point gas temperature t collected by any jth thermocouple j And average gas temperature
A temperature difference therebetween of
When in use
Time, temperature difference Δ t j >0; when in use
When the utility model is used, the water is discharged,temperature difference Δ t j <0. For example, in one example, the single-point gas temperature collected by each thermocouple and the corresponding calculated temperature difference are respectively as follows:
and taking the single-point gas temperature of which the temperature difference with the average gas temperature reaches a temperature deviation threshold value as the abnormal single-point temperature, determining that the uniformity of the gas temperature field is in an abnormal state when at least one abnormal single-point temperature is detected, and outputting an alarm signal indicating the abnormal single-point temperature. The temperature deviation threshold comprises an upper temperature deviation threshold T 1 And a lower temperature deviation threshold T 2 Deviation threshold T over temperature 1 And a lower temperature deviation threshold T 2 May or may not be equal. The different working conditions are described as follows:
(1) In the empty condition, if
And T 2 ≤|Δt j |<T err Then single point gas temperature t j And the temperature field monitoring assembly outputs a lower deviation alarm signal for abnormal single-point temperature. The lower deviation alarm signal is used for indicating the abnormal single-point temperature t j The abnormal nozzle performance at the corresponding flame tube causes the abnormal single-point temperature to be lower. The condition that the temperature of an abnormal single point is abnormally high generally does not exist under the empty condition. | Δ t j I is the single point gas temperature t j And average gas temperature
Absolute value of the temperature difference between, T err Is a temperature fault deviation threshold.
(2) Under the rated working condition, the normal working condition is 60 percent to 100 percent, if
And T 2 ≤|Δt j |<T err Determining a single pointTemperature t of combustion gas j For abnormal single-point temperature, the temperature field monitoring component outputs a lower deviation alarm signal which is used for indicating the abnormal single-point temperature t j The nozzle performance abnormality at the corresponding flame tube causes the abnormal single-point temperature to be lower. If it is
And T 1 ≤|Δt j |<T err Determining the temperature t of the gas at a single point j For abnormal single-point temperature, the temperature field monitoring component outputs an upper deviation alarm signal which is used for indicating the abnormal single-point temperature t j The abnormal nozzle performance at the corresponding flame tube causes the abnormal high single-point temperature.
(3) Under both empty and rated conditions, if | Δ t j |≥T err Determining the temperature t of the gas at a single point j For abnormal single point temperature, the temperature field monitoring component outputs a fault deviation signal which is used for indicating the abnormal single point temperature t j Nozzle failure at the corresponding flame tube.
The three conditions are summarized as follows, the alarm signal output by the temperature field monitoring component 5 is an upper deviation alarm signal, a lower deviation alarm signal or a fault deviation signal, which are respectively as follows:
for instance, in one example, suppose T 1 ＝60℃、T 2 ＝90℃、T err And if the temperature is not less than 200 ℃, an upper deviation alarm signal indicating that the single-point gas temperature collected by the thermocouple 2 is abnormal can be output according to the method.
In one embodiment, the temperature field monitoring assembly 5 detects the single point gas temperature t j And average gas temperature
When the temperature difference reaches the temperature deviation threshold value, the alarm signal indicating the abnormal single-point temperature is not directly output, and the system also executes the following method to detect the working state of the system:
(1) And the input end of the thermocouple junction box acquires a standard temperature signal of the thermocouple corresponding to the abnormal single-point temperature to replace the abnormal single-point temperature.
(2) If the average gas temperature is still in an overtemperature abnormal state and/or the uniformity of the gas temperature field is still in an abnormal state at the moment, outputting a first inspection indicating signal, wherein the first inspection indicating signal is used for indicating the working states of an inspection temperature control device, a temperature field monitoring assembly and a connecting circuit. The maintenance personnel can inspect the working states of the temperature control device, the temperature field monitoring assembly and the connecting line according to the first inspection indicating signal, then the fault can be repaired, and if the fault does not exist, a normal state feedback signal indicating that the working states of the temperature control device, the temperature field monitoring assembly and the connecting line are normal is provided for the temperature field monitoring assembly.
(3) And if the average gas temperature is in a normal state and the uniformity of the gas temperature field is also in a normal state, outputting a second troubleshooting indicating signal, wherein the second troubleshooting indicating signal is used for indicating the working state of the thermocouple corresponding to the abnormal single-point temperature for troubleshooting. And the maintenance personnel can check the working state of the thermocouple corresponding to the abnormal single-point temperature according to the second checking indication signal, the thermocouple can be replaced or repaired when the thermocouple has a fault, and a normal state feedback signal indicating that the working state of the thermocouple corresponding to the abnormal single-point temperature is normal is provided for the temperature field monitoring assembly if the thermocouple has no fault.
(4) When the temperature field monitoring assembly receives a state normal feedback signal responding to the first inspection indication signal or the second inspection indication signal, the working state of the system is determined to be fault-free, and if the uniformity of the gas temperature field is in an abnormal state due to the performance change or the fault of the nozzle at the position of the flame tube corresponding to the abnormal single-point temperature, an alarm signal indicating the abnormal single-point temperature is output according to the method.
After the temperature field monitoring assembly outputs the alarm signal, maintenance personnel can repair or replace the nozzle at the position of the flame tube corresponding to the abnormal single-point temperature according to the alarm signal. If the temperature field monitoring assembly outputs a fault deviation signal, the nozzle fault is indicated, and at the moment, a new oil nozzle needs to be replaced. If the temperature field monitoring assembly outputs an upper deviation alarm signal or a lower deviation alarm signal, the nozzle is free of faults but the performance is changed, for example, the performance is changed due to fuel distribution change caused by carbon deposit and the like. At this time, a new fuel injection nozzle can be replaced, or the nozzle at the position of the flame tube corresponding to the abnormal single-point temperature can be exchanged with other nozzles: exchanging a nozzle at the position of the flame tube corresponding to the abnormal higher abnormal single-point temperature with a corresponding nozzle with lower single-point gas temperature and small delivery flow; and exchanging the nozzle at the position of the flame tube corresponding to the abnormal low abnormal single-point temperature with the corresponding nozzle with high single-point gas temperature and large delivery flow.
For example, in the above example, the single-point gas temperature collected by the thermocouple 2 is abnormally high, and the temperature field monitoring component outputs an upper deviation alarm signal. The maintenance personnel can determine that the temperature of the single-point fuel gas collected by the thermocouple 9 is low (698 ℃), and the factory fuel flow of the nozzle of the flame tube in which the thermocouple 9 is located is smaller than that of other nozzles, so that the nozzle of the flame tube in which the thermocouple 2 is located and the nozzle of the flame tube in which the thermocouple 9 is located can be exchanged. The single-point gas temperature collected by each thermocouple after the exchange and the temperature difference obtained by corresponding calculation are respectively as shown in the following table, so that the uniformity of the gas temperature field is recovered to a normal state.
What has been described above is only a preferred embodiment of the present application, and the present application is not limited to the above examples. It is to be understood that other modifications and variations directly derived or suggested to those skilled in the art without departing from the spirit and concepts of the present application are to be considered as being within the scope of the present application.
Claims (10)
1. The system for monitoring the temperature field behind the low-pressure turbine of the gas turbine is characterized by comprising a plurality of thermocouples, a thermocouple junction box, a temperature control device and a temperature field monitoring assembly;
each thermocouple is arranged at one flame tube of a combustion chamber of the gas turbine, all the thermocouples are connected to the thermocouple junction box, and the thermocouple junction box is connected with the temperature control device and the temperature field monitoring assembly respectively;
each thermocouple respectively collects the single-point gas temperature of each flame tube and transmits the single-point gas temperature to the thermocouple junction box, the thermocouple junction box calculates the average value of all the single-point gas temperatures to obtain the average gas temperature and provides the average gas temperature to the temperature control device, and the temperature control device executes overtemperature shutdown protection when detecting that the average gas temperature is in an overtemperature abnormal state;
the thermocouple junction box further transmits the single-point gas temperature collected by all the thermocouples to the temperature field monitoring assembly, and the temperature field monitoring assembly outputs an alarm signal when detecting that the uniformity of the gas temperature field is in an abnormal state according to the single-point gas temperature.
2. The system of claim 1, wherein the temperature control device comprises a temperature control assembly and a temperature regulator, the temperature control assembly performs over-temperature shutdown protection when the average gas temperature is detected to be in the over-temperature abnormal state, the temperature regulator performs over-temperature shutdown protection when the average gas temperature is detected to be in the over-temperature abnormal state, and the temperature control assembly and the temperature regulator independently detect to realize dual redundant temperature control.
3. The system of claim 2, wherein the temperature field monitoring component performs over-temperature shutdown protection when detecting that the average gas temperature is in an over-temperature abnormal state according to all single-point gas temperatures, and the temperature control component, the temperature regulator and the temperature field monitoring component independently detect to realize triple-redundancy temperature control.
4. The system of claim 1, wherein the method of outputting an alarm signal by the temperature field monitoring component comprises:
when at least one abnormal single-point temperature is detected, determining that the uniformity of a gas temperature field is in an abnormal state, and outputting an alarm signal indicating the abnormal single-point temperature; the abnormal single-point temperature is the single-point gas temperature at which the temperature difference between the abnormal single-point temperature and the average gas temperature reaches the temperature deviation threshold value under the corresponding working condition.
5. The system of claim 4, wherein prior to the temperature field monitoring component outputting an alarm signal indicative of the abnormal single point temperature, the system performs a method further comprising:
the input end of the thermocouple junction box acquires a standard temperature signal of a thermocouple corresponding to the abnormal single-point temperature to replace the abnormal single-point temperature;
if the average gas temperature is still in an overtemperature abnormal state and/or the uniformity of the gas temperature field is still in an abnormal state at the moment, outputting a first inspection indicating signal, wherein the first inspection indicating signal is used for indicating the working states of an inspection temperature control device, a temperature field monitoring assembly and a connecting circuit;
if the average gas temperature is in a normal state and the uniformity of the gas temperature field is also in a normal state, outputting a second troubleshooting indicating signal, wherein the second troubleshooting indicating signal is used for indicating the working state of the thermocouple corresponding to the troubleshooting abnormal single-point temperature;
when the temperature field monitoring assembly receives a normal state feedback signal responding to the first checking indication signal or the second checking indication signal, an alarm signal indicating the abnormal single-point temperature is output, and the normal state feedback signal is used for indicating that the working states of the temperature control device, the temperature field monitoring assembly and the connecting line are normal or indicating that the working state of a thermocouple corresponding to the abnormal single-point temperature is normal.
6. The system of claim 4, wherein the temperature field monitoring component outputting an alarm signal comprises:
in the empty condition, if
And T 2 ≤|Δt j |<T err The temperature field monitoring assembly outputs a lower deviation alarm signal which is used for indicating the abnormal single-point temperature t j The abnormal nozzle performance at the corresponding flame tube causes abnormal low single-point temperature;
under nominal operating conditions, if
And T 2 ≤|Δt j |<T err The temperature field monitoring assembly outputs a lower deviation alarm signal; if it is
And T 1 ≤|Δt j |<T err The temperature field monitoring assembly outputs an upper deviation alarm signal which is used for indicating abnormal single-point temperature t j The abnormal nozzle performance at the corresponding flame tube causes abnormal high single-point temperature;
wherein, | Δ t j I is the temperature t of the gas at a single point j And average gas temperature
Absolute value of the temperature difference between, T 1 Is a deviation threshold over temperature, T 2 Is a deviation threshold at temperature, T err Is a temperature fault deviation threshold.
7. The system of claim 6,
if | Δ t j |≥T err Said temperature field monitorThe measurement component outputs a fault deviation signal indicative of an abnormal single point temperature t j Nozzle failure at the corresponding liner.
8. The system of claim 2, wherein the temperature control assembly is further configured to perform flameout shutdown protection upon detection of an average gas temperature in a low temperature anomaly.
9. The system of claim 1, wherein the temperature field monitoring assembly is further configured to display in real time a single point gas temperature at each combustor basket.
10. The system of claim 1, wherein the temperature control device determines that the average gas temperature is in an over-temperature abnormal state and executes over-temperature shutdown protection when detecting that the average gas temperature in the starting process and the working condition running process exceeds the corresponding temperature threshold.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210812882.6A CN115372006A (en) | 2022-07-11 | 2022-07-11 | Gas turbine low pressure turbine rear temperature field monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210812882.6A CN115372006A (en) | 2022-07-11 | 2022-07-11 | Gas turbine low pressure turbine rear temperature field monitoring system |
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| CN115372006A true CN115372006A (en) | 2022-11-22 |
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| CN202210812882.6A Pending CN115372006A (en) | 2022-07-11 | 2022-07-11 | Gas turbine low pressure turbine rear temperature field monitoring system |
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