阅读说明：本技术 一种燃气轮机故障监控系统及方法 (Gas turbine fault monitoring system and method ) 是由 袁奇俊 马吉星 靳普 于 2020-12-07 设计创作，主要内容包括：本发明公开了一种燃气轮机故障监控系统及方法,包括检测模块、故障等级确定模块、控制模块和故障响应执行模块；检测模块：检测燃气轮机的参数和/或通讯信号,发送至故障等级确定模块；故障等级确定模块：基于检测数据和/或通讯信号确定故障等级,发送至控制模块；控制模块：基于故障等级数据和/或信号,产生并发送控制信号和/或故障相关警示信息；故障相应执行模块：基于控制信号,执行相应操作。本发明将故障分为六个等级,根据不同的故障等级,设定不同的故障停机流程和冷却温度,可以更高效地利用微型燃气轮机。本发明可以保护机器在故障状态下安全进入冷却停机流程,同时保护测试人员,便于测试人员对系统进行调试、实验和标定数据。(The invention discloses a gas turbine fault monitoring system and a method, comprising a detection module, a fault grade determination module, a control module and a fault response execution module; a detection module: detecting parameters and/or communication signals of the gas turbine, and sending the parameters and/or the communication signals to a fault level determination module; a fault level determination module: determining a fault level based on the detection data and/or the communication signal, and sending the fault level to the control module; a control module: generating and sending a control signal and/or fault-related warning information based on the fault level data and/or signals; and a fault corresponding execution module: based on the control signal, corresponding operations are performed. The invention divides the fault into six grades, sets different fault shutdown processes and cooling temperatures according to different fault grades, and can more efficiently utilize the micro gas turbine. The invention can protect the machine from safely entering the cooling shutdown process in a fault state, and simultaneously protect the tester, thereby facilitating the tester to debug, experiment and calibrate the system.)

1. A gas turbine fault monitoring system, characterized by: the system comprises a detection module, a fault grade determination module, a control module and a fault response execution module; wherein the content of the first and second substances,

a detection module: detecting parameters and/or communication signals of the gas turbine, and sending the detected data and/or communication signals to a fault level determination module;

a fault level determination module: determining a fault level based on the detection data and/or the communication signal of the detection module, and sending the fault level data and/or the signal to the control module;

a control module: generating a control signal and/or fault related warning information based on fault grade data and/or signals of the fault grade determination module, and sending the control signal to a fault response execution module;

and a fault corresponding execution module: executing corresponding operation based on the control signal of the control module;

in particular, the amount of the solvent to be used,

the fault level determination module determines the fault level to be L0, L1, L2, L3, L4 or L5 based on the detection data and/or the communication signal of the detection module:

l0: the data of the detection module is in a normal range, the system is in a normal state, no fault information exists, and the fault level is L0;

l1: a fault is determined to exist and the fault level is L1 when one or more of the following conditions occur:

(1) only one temperature sensor fails: the temperature data has jump or is not in a reasonable range;

(2) only one speed sensor fails: the speed data has speed jump or is not in a reasonable range;

(3) radial bearing/thrust bearing gas pressure is insufficient: the radial bearing/thrust bearing air pressure is lower than the lowest limit value of a reasonable range;

(4) starting rotating speed error: the rotating speed of the combustion engine does not reach the ignition speed within the specified time in the starting process;

(5) failure of ignition: the exhaust temperature of the internal combustion engine does not rise to a certain temperature value within a given time after ignition;

(6) failure in oil cutting: in the oil cutting process of the combustion engine, the exhaust temperature of the combustion engine does not rise to a certain temperature value;

l2: when the system has general errors of engine control during operation when one or more of the following conditions occur, determining the fault level of the engine to be L2:

(1) the exhaust temperature of the gas turbine is too high and the duration is too long;

(2) and (3) accelerating too fast: the speed per unit time of the combustion engine is increased too fast in the process of rotating speed climbing;

(3) and (3) accelerating failure: in the running state, when the fuel control voltage of the combustion engine is gradually increased, the rotating speed is reduced;

(4) overspeed: during operation, the rotating speed of the combustion engine exceeds the target operation rotating speed;

(5) unstable rotating speed: at a stable operation working condition point, the rotating speed of the gas turbine is lower than the target operation rotating speed minus a certain threshold value, or higher than the target operation rotating speed plus a certain threshold value;

(6) the temperature of the box body is overhigh: the cold end temperature or the hot end temperature of the gas turbine box body is too high;

(7) failure of fuel atomization results in ignition failure;

(8) internal communication faults of the gas turbine system;

l3: when one or more of the following conditions occur, the system has serious errors in the control of the combustion engine during operation, and the fault level of the combustion engine is determined to be L3:

(1) the exhaust temperature of the gas turbine is too high;

(2) all temperature sensors fail: in a standby or running state, all temperature sensors have temperature jump or are not in a reasonable range or have no temperature output;

(3) all speed sensors fail: in a standby or running state, all the speed sensors have speed jump or are not in a reasonable range;

(4) failure of oil pump control voltage: the difference value between the output control voltage of the oil pump and the feedback oil pump control voltage exceeds a set threshold value;

(5) and (3) low-voltage power supply failure: the main power supplies of the oil pump power supply, the igniter power supply and the electromagnetic valve power supply are failed and cannot provide power;

l4: the fault grade determining module receives a signal that an emergency stop button is pressed down, or a signal that gas leaks, or a signal that an open fire occurs in a gas turbine box, and then determines that the system fault grade is L4;

l5: the system is in a failure state;

the control module generates the following control signals based on the fault grade:

when the fault level is L0, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L1, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L2, generating a control signal for causing the execution module to execute a cold shutdown procedure;

when the fault level is L3, generating a control signal that causes the execution module to execute a hot shutdown procedure;

when the failure level is L4, a control signal that causes the execution module to execute the thermal shutdown procedure 1 is generated;

when the failure level is L5, a control signal that causes the execution module to execute the thermal shutdown procedure 2 is generated;

the fault response execution module executes the following corresponding operations based on the control signal:

and (3) executing normal operation: all parts normally operate;

executing a cold shutdown process: the oil pump periodically reduces fuel output based on a control voltage signal of the control module; other related valves are closed based on the control module to generate control closing signals; when the rotating speed of the gas turbine is reduced to a certain rotating speed, the motor works based on a motor starting signal generated by the control module to cool the gas turbine;

executing a hot shutdown process: the oil pump periodically and greatly reduces fuel oil output based on a control voltage signal of the control module until the output control voltage of the oil pump is 0, and when the output control voltage of the oil pump is reduced to 0, the motor works based on a motor starting signal generated by the control module to cool the fuel pump for a certain time;

executing the hot shutdown process 1: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed;

executing a hot shutdown process 2: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed; and simultaneously, all power supplies of the system are cut off, and all contactors are disconnected.

2. The gas turbine fault monitoring system of claim 1, wherein: the gas turbine fault monitoring system also comprises a fault prompting module; and the fault prompting module receives and displays the fault related warning information generated by the control module.

3. The gas turbine fault monitoring system of claim 2, wherein: the content of the fault-related warning message includes a fault level, a specific component in which a fault may exist, and a method for processing the fault.

4. The gas turbine fault monitoring system of claim 1, wherein: the detection module comprises a temperature sensor, a speed sensor and a pressure sensor; and at least two temperature sensors are arranged at the rear end of the gas turbine.

5. The gas turbine fault monitoring system of claim 1, wherein: the fault response execution module comprises a starting motor, a fuel flow control electromagnetic valve and a fuel pump.

6. The gas turbine fault monitoring system of claim 1, wherein: in the L2(1), the condition that the exhaust temperature of the combustion engine is too high means that the exhaust temperature is more than 700 degC; too long a duration means more than 10 seconds;

or/and: in the L2(2), the condition that the speed of the combustion engine per unit time is increased too fast in the rotating speed climbing process means that the rotating speed acceleration exceeds 5,000rpm/s in the accelerating process;

or/and: in the L2(3), the reduction of the rotation speed means that the rotation speed is reduced by more than 1,000rpm within 1 second;

or/and: in the L2(4), the target running speed refers to 3,000 rpm;

or/and: in the L2(5), the condition that the rotating speed of the combustion engine is lower than the target operating rotating speed minus a certain threshold value means that the rotating speed is lower than the target operating rotating speed by 5,000 rpm; a target operating speed higher than the target operating speed plus a certain threshold value means 2,500rpm above the target operating speed;

or/and: in the L2(6), the fact that the temperature of the cold end of the combustion engine box is too high means that the temperature exceeds 50 degC; hot end temperature too high means over 80 degC;

or/and: in the above L3(1), too high engine exhaust temperature means that it exceeds 750 degC.

7. A method of fault monitoring a gas turbine, characterized by: the method comprises the following steps:

detecting: detecting parameters and/or communication signals of the gas turbine;

(II) determining a fault level: determining a fault level based on the detection data and/or the communication signal;

(III) generating control signals and/or fault-related warning information: generating a control signal and/or fault-related warning information based on the fault level;

(IV) executing: based on the generated control signal, executing corresponding operation;

specifically, in the step (two), the fault level is determined to be L0, L1, L2, L3, L4, or L5:

l0: the data of the detection module is in a normal range, the system is in a normal state, no fault information exists, and the fault level is L0;

l1: a fault is determined to exist and the fault level is L1 when one or more of the following conditions occur:

(1) only one temperature sensor fails: the temperature data has jump or is not in a reasonable range;

(2) only one speed sensor fails: the speed data has speed jump or is not in a reasonable range;

(3) radial bearing/thrust bearing gas pressure is insufficient: the radial bearing/thrust bearing air pressure is lower than the lowest limit value of a reasonable range;

(4) starting rotating speed error: the rotating speed of the combustion engine does not reach the ignition speed within the specified time in the starting process;

(5) failure of ignition: the exhaust temperature of the internal combustion engine does not rise to a certain temperature value within a given time after ignition;

(6) failure in oil cutting: in the oil cutting process of the combustion engine, the exhaust temperature of the combustion engine does not rise to a certain temperature value;

l2: when the system has general errors of engine control during operation when one or more of the following conditions occur, determining the fault level of the engine to be L2:

(1) the exhaust temperature of the gas turbine is too high and the duration is too long;

(2) and (3) accelerating too fast: the speed per unit time of the combustion engine is increased too fast in the process of rotating speed climbing;

(3) and (3) accelerating failure: in the running state, when the fuel control voltage of the combustion engine is gradually increased, the rotating speed is reduced;

(4) overspeed: during operation, the rotating speed of the combustion engine exceeds the target operation rotating speed;

(5) unstable rotating speed: at a stable operation working condition point, the rotating speed of the gas turbine is lower than the target operation rotating speed minus a certain threshold value, or higher than the target operation rotating speed plus a certain threshold value;

(6) the temperature of the box body is overhigh: the cold end temperature or the hot end temperature of the gas turbine box body is too high;

(7) failure of fuel atomization results in ignition failure;

(8) internal communication faults of the gas turbine system;

l3: when one or more of the following conditions occur, the system has serious errors in the control of the combustion engine during operation, and the fault level of the combustion engine is determined to be L3:

(1) the exhaust temperature of the gas turbine is too high;

(2) all temperature sensors fail: in a standby or running state, all temperature sensors have temperature jump or are not in a reasonable range or have no temperature output;

(3) all speed sensors fail: in a standby or running state, all the speed sensors have speed jump or are not in a reasonable range;

(4) failure of oil pump control voltage: the difference value between the output control voltage of the oil pump and the feedback oil pump control voltage exceeds a set threshold value;

(5) and (3) low-voltage power supply failure: the main power supplies of the oil pump power supply, the igniter power supply and the electromagnetic valve power supply are failed and cannot provide power;

l4: the fault grade determining module receives a signal that an emergency stop button is pressed down, or a signal that gas leaks, or a signal that an open fire occurs in a gas turbine box, and then determines that the system fault grade is L4;

l5: the system is in a failure state;

in the step (3), based on the fault level, the following control signals are generated:

when the fault level is L0, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L1, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L2, generating a control signal for causing the execution module to execute a cold shutdown procedure;

when the fault level is L3, generating a control signal that causes the execution module to execute a hot shutdown procedure;

when the failure level is L4, a control signal that causes the execution module to execute the thermal shutdown procedure 1 is generated;

when the failure level is L5, a control signal that causes the execution module to execute the thermal shutdown procedure 2 is generated;

in the step (IV), based on the control signal, the following corresponding operations are executed:

and (3) executing normal operation: all parts normally operate;

executing a cold shutdown process: the oil pump periodically reduces fuel output based on a control voltage signal of the control module; other related valves are closed based on the control module to generate control closing signals; when the rotating speed of the gas turbine is reduced to a certain rotating speed, the motor works based on a motor starting signal generated by the control module to cool the gas turbine;

executing a hot shutdown process: the oil pump periodically and greatly reduces fuel oil output based on a control voltage signal of the control module until the output control voltage of the oil pump is 0, and when the output control voltage of the oil pump is reduced to 0, the motor works based on a motor starting signal generated by the control module to cool the fuel pump for a certain time;

executing the hot shutdown process 1: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed;

executing a hot shutdown process 2: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed; and simultaneously, all power supplies of the system are cut off, and all contactors are disconnected.

8. The gas turbine fault monitoring method of claim 7, wherein: and (5) fault prompting: and displaying fault-related warning information generated based on the fault grade.

9. The gas turbine fault monitoring method of claim 7, wherein: in the L2(1), the condition that the exhaust temperature of the combustion engine is too high means that the exhaust temperature is more than 700 degC; too long a duration means more than 10 seconds;

or/and: in the L2(2), the condition that the speed of the combustion engine per unit time is increased too fast in the rotating speed climbing process means that the rotating speed acceleration exceeds 5,000rpm/s in the accelerating process;

or/and: in the L2(3), the reduction of the rotation speed means that the rotation speed is reduced by more than 1,000rpm within 1 second;

or/and: in the L2(4), the target running speed refers to 3,000 rpm;

or/and: in the L2(5), the condition that the rotating speed of the combustion engine is lower than the target operating rotating speed minus a certain threshold value means that the rotating speed is lower than the target operating rotating speed by 5,000 rpm; a target operating speed higher than the target operating speed plus a certain threshold value means 2,500rpm above the target operating speed;

or/and: in the L2(6), the fact that the temperature of the cold end of the combustion engine box is too high means that the temperature exceeds 50 degC; hot end temperature too high means over 80 degC;

or/and: in the above L3(1), too high engine exhaust temperature means that it exceeds 750 degC.

10. A gas turbine fault monitoring method according to any one of claims 7 to 9, characterized by: the gas turbine fault monitoring system according to any one of claims 1 to 5, wherein each operation of the gas turbine fault monitoring method is performed.

Technical Field

The invention relates to a fault monitoring system and method for a gas turbine, and belongs to the technical field of gas turbines.

Background

Micro gas turbines are increasingly being used in the energy field as core components in distributed power, cogeneration and other systems that require long periods of unsupervised stable operation. Therefore, the method has important significance for effectively identifying various faults in the operation process of the micro gas turbine and making different responses according to different fault grades and types so as to ensure the operation safety of the system and the personal safety of operators.

The chinese patent application CN 104481702a discloses a method for monitoring the operating state of a micro gas turbine, which completes the monitoring of the real-time operating state of the micro gas turbine through monitoring software. It does not relate to fault rating and the system performing different operations of the engine in response to different fault levels.

Disclosure of Invention

In view of the above prior art, the present invention provides a gas turbine fault monitoring system and method. The monitoring system and method of the present invention allows for different fault shutdown procedures and cooling temperatures to be set, and thus different times to be required for shutdown, thus allowing for more efficient use of the micro gas turbine.

The invention is realized by the following technical scheme:

a gas turbine fault monitoring system comprising: the device comprises a detection module, a fault grade determination module, a control module and a fault response execution module; wherein the content of the first and second substances,

a detection module: detecting parameters (such as temperature, pressure, speed and the like) and/or communication signals (such as a signal that an emergency stop button is pressed) of the gas turbine, and sending the detected data and/or communication signals to a fault level determination module;

a fault level determination module: determining a fault level based on the detection data and/or the communication signal of the detection module, and sending the fault level data and/or the signal to the control module;

a control module: generating a control signal and/or fault related warning information based on fault grade data and/or signals of the fault grade determination module, and sending the control signal to a fault response execution module;

and a fault corresponding execution module: and executing corresponding operation based on the control signal of the control module.

In particular, the amount of the solvent to be used,

the fault level determination module determines the fault level to be L0, L1, L2, L3, L4 or L5 based on the detection data and/or the communication signal of the detection module:

l0: the data of the detection module is in a normal range, the system is in a normal state, no fault information exists, and the fault level is L0;

for fault level L0, the system need not perform fault handling operations; at this time, if the system is in the standby state, the system can enter a normal starting operation state according to the requirements of the user, and if the system is already in the starting state, the system can continuously operate.

L1: a fault is determined to exist and the fault level is L1 when one or more of the following conditions occur:

(1) only one temperature sensor fails: the temperature data has jump or is not in a reasonable range (reference environment temperature);

(2) only one speed sensor fails: the speed data has speed jump or is not in a reasonable range;

(3) radial bearing/thrust bearing gas pressure is insufficient: the radial bearing/thrust bearing air pressure is lower than the lowest limit value of a reasonable range;

(4) starting rotating speed error: the rotating speed of the combustion engine does not reach the ignition speed within the specified time in the starting process;

(5) failure of ignition: the exhaust temperature of the internal combustion engine does not rise to a certain temperature value within a given time after ignition;

(6) failure in oil cutting: in the oil cutting process of the combustion engine, the exhaust temperature of the combustion engine does not rise to a certain temperature value;

in this state, the gas turbine can still normally enter the startup state or remain in operation, for example: when one path of temperature sensor makes mistakes, the system can still ensure the stable operation of the whole system through the feedback of the other path of temperature sensor; and the system can record fault information when the system is normally communicated and operated so as to carry out repair after the operation is finished.

L2: when the system has general errors of engine control during operation when one or more of the following conditions occur, determining the fault level of the engine to be L2:

(1) the exhaust temperature of the combustion engine is too high (such as more than 700degC) and the duration is too long (such as more than 10 seconds);

(2) and (3) accelerating too fast: the speed of the combustion engine per unit time is increased too fast in the rotating speed climbing process (for example, the rotating speed acceleration exceeds 5,000rpm/s in the acceleration process);

(3) and (3) accelerating failure: in the running state, when the fuel control voltage of the internal combustion engine is gradually increased, the rotating speed is reduced (for example, the rotating speed is reduced by more than 1,000rpm within 1 second);

(4) overspeed: during operation, the engine speed exceeds a target operating speed (e.g., 3,000 rpm);

(5) unstable rotating speed: at a stable operation working condition point, the rotating speed of the combustion engine is lower than the target operation rotating speed minus a certain threshold (such as lower than the target operation rotating speed by 5,000rpm), or higher than the target operation rotating speed plus a certain threshold (such as higher than the target operation rotating speed by 2,500 rpm);

(6) the temperature of the box body is overhigh: the temperature of the cold end of the combustion engine box is too high (for example, more than 50degC) or the temperature of the hot end of the combustion engine box is too high (for example, more than 80 degC);

(7) failure of fuel atomization results in ignition failure;

(8) internal communication faults of the gas turbine system.

L3: when one or more of the following conditions occur, the system has serious errors in the control of the combustion engine during operation, and the fault level of the combustion engine is determined to be L3:

(1) too high a temperature of the engine exhaust (e.g. over 750degC) (compared with step 1 of L2, the temperature of the engine exhaust is too high, but the upper temperature limit is different);

(2) all temperature sensors fail: in a standby or running state, all temperature sensors have temperature jump or are not in a reasonable range or have no temperature output;

(3) all speed sensors fail: in a standby or running state, all the speed sensors have speed jump or are not in a reasonable range;

(4) failure of oil pump control voltage: the difference value between the output control voltage of the oil pump and the feedback oil pump control voltage exceeds a set threshold value, and the oil pump control voltage makes mistakes;

(5) and (3) low-voltage power supply failure: the main power supplies of the oil pump power supply, the igniter power supply and the electromagnetic valve power supply are failed and cannot provide power.

L4: and the fault grade determining module receives a signal that an emergency stop button is pressed, or a signal that gas leaks, or a signal that an open fire occurs in the combustion engine box body, and determines that the system fault grade is L4. In this state, the cold and hot shutdown procedures will fail.

L5: the system is in a failure state for the highest level failure of the system. Normally, the system communication and operation functions cannot work normally in this state, for example, a system CPU fails.

The control module generates the following control signals based on the fault grade:

when the fault level is L0, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L1, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L2, generating a control signal for causing the execution module to execute a cold shutdown procedure;

when the fault level is L3, generating a control signal that causes the execution module to execute a hot shutdown procedure;

when the failure level is L4, a control signal that causes the execution module to execute the thermal shutdown procedure 1 is generated;

when the failure level is L5, a control signal is generated that causes the execution module to execute the thermal shutdown procedure 2.

The fault response execution module executes corresponding operations based on the control signals:

and (3) executing normal operation: all parts normally operate;

executing a cold shutdown process: the oil pump periodically reduces fuel output based on a control voltage signal of the control module; other related valves are closed based on the control module to generate control closing signals; when the rotating speed of the combustion engine is reduced to a certain rotating speed, the motor works based on a motor starting signal generated by the control module to cool the combustion engine.

Executing a hot shutdown process: the oil pump periodically and greatly reduces fuel output based on a control voltage signal of the control module until the output control voltage of the oil pump is 0, and when the output control voltage of the oil pump is reduced to 0, the motor works based on a motor starting signal generated by the control module to cool the engine for a certain time (such as 15 minutes).

Executing the hot shutdown process 1: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed.

Executing a hot shutdown process 2: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed; and simultaneously, all power supplies of the system are cut off, and all contactors are disconnected.

Further, the gas turbine fault monitoring system further comprises a fault prompting module; the fault prompting module receives and displays the fault-related warning information (including fault grade, specific parts possibly having faults and a method for processing the faults) generated by the control module, for example: in the case of a fault level of L1, the control module generates a fault-related warning message to indicate that the current fault level of the system is L1, that there may be a particular component with a fault (e.g., one of the temperature sensors), and please perform a check step after the system is shut down.

Further, the detection module comprises a temperature sensor, a speed sensor, a pressure sensor and the like; and at least two temperature sensors are arranged at the rear end of the gas turbine.

Further, the fault response execution module comprises a starting motor, a fuel flow control electromagnetic valve, a fuel pump and the like.

A method of fault monitoring a gas turbine engine, comprising the steps of:

detecting: detecting a parameter of the gas turbine (e.g., temperature, pressure, speed, etc.) and/or a communication signal (e.g., a signal that an emergency stop button is pressed);

(II) determining a fault level: determining a fault level based on the detection data and/or the communication signal;

(III) generating control signals and/or fault-related warning information: generating a control signal and/or fault-related warning information based on the fault level;

(IV) executing: based on the generated control signal, executing corresponding operation;

specifically, in the step (two), the fault level is determined to be L0, L1, L2, L3, L4, or L5:

l0: the data of the detection module is in a normal range, the system is in a normal state, no fault information exists, and the fault level is L0;

for fault level L0, the system need not perform fault handling operations; at this time, if the system is in the standby state, the system can enter a normal starting operation state according to the requirements of the user, and if the system is already in the starting state, the system can continuously operate.

L1: a fault is determined to exist and the fault level is L1 when one or more of the following conditions occur:

(1) only one temperature sensor fails: the temperature data has jump or is not in a reasonable range (reference environment temperature);

(2) only one speed sensor fails: the speed data has speed jump or is not in a reasonable range;

(3) radial bearing/thrust bearing gas pressure is insufficient: the radial bearing/thrust bearing air pressure is lower than the lowest limit value of a reasonable range;

(4) starting rotating speed error: the rotating speed of the combustion engine does not reach the ignition speed within the specified time in the starting process;

(5) failure of ignition: the exhaust temperature of the internal combustion engine does not rise to a certain temperature value within a given time after ignition;

(6) failure in oil cutting: in the oil cutting process of the combustion engine, the exhaust temperature of the combustion engine does not rise to a certain temperature value;

in this state, the gas turbine can still normally enter the startup state or remain in operation, for example: when one path of temperature sensor makes mistakes, the system can still ensure the stable operation of the whole system through the feedback of the other path of temperature sensor; and the system can record fault information when the system is normally communicated and operated so as to carry out repair after the operation is finished.

L2: when the system has general errors of engine control during operation when one or more of the following conditions occur, determining the fault level of the engine to be L2:

(1) the exhaust temperature of the combustion engine is too high (such as more than 700degC) and the duration is too long (such as more than 10 seconds);

(2) and (3) accelerating too fast: the speed of the combustion engine per unit time is increased too fast in the rotating speed climbing process (for example, the rotating speed acceleration exceeds 5,000rpm/s in the acceleration process);

(3) and (3) accelerating failure: in the running state, when the fuel control voltage of the internal combustion engine is gradually increased, the rotating speed is reduced (for example, the rotating speed is reduced by more than 1,000rpm within 1 second);

(4) overspeed: during operation, the engine speed exceeds a target operating speed (e.g., 3,000 rpm);

(5) unstable rotating speed: at a stable operation working condition point, the rotating speed of the combustion engine is lower than the target operation rotating speed minus a certain threshold (such as lower than the target operation rotating speed by 5,000rpm), or higher than the target operation rotating speed plus a certain threshold (such as higher than the target operation rotating speed by 2,500 rpm);

(6) the temperature of the box body is overhigh: the temperature of the cold end of the combustion engine box is too high (for example, more than 50degC) or the temperature of the hot end of the combustion engine box is too high (for example, more than 80 degC);

(7) failure of fuel atomization results in ignition failure;

(8) internal communication faults of the gas turbine system.

L3: when one or more of the following conditions occur, the system has serious errors in the control of the combustion engine during operation, and the fault level of the combustion engine is determined to be L3:

(1) excessive engine exhaust temperatures (e.g., over 750 degC);

(2) all temperature sensors fail: in a standby or running state, all temperature sensors have temperature jump or are not in a reasonable range or have no temperature output;

(3) all speed sensors fail: in a standby or running state, all the speed sensors have speed jump or are not in a reasonable range;

(4) failure of oil pump control voltage: the difference value between the output control voltage of the oil pump and the feedback oil pump control voltage exceeds a set threshold value, and the oil pump control voltage makes mistakes;

(5) and (3) low-voltage power supply failure: the main power supplies of the oil pump power supply, the igniter power supply and the electromagnetic valve power supply are failed and cannot provide power.

L4: and the fault grade determining module receives a signal that an emergency stop button is pressed, or a signal that gas leaks, or a signal that an open fire occurs in the combustion engine box body, and determines that the system fault grade is L4. In this state, the cold and hot shutdown procedures will fail.

L5: the system is in a failure state for the highest level failure of the system. Normally, the system communication and operation functions cannot work normally in this state, for example, a system CPU fails.

In the step (3), based on the fault level, the following control signals are generated:

when the fault level is L0, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L1, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L2, generating a control signal for causing the execution module to execute a cold shutdown procedure;

when the fault level is L3, generating a control signal that causes the execution module to execute a hot shutdown procedure;

when the failure level is L4, a control signal that causes the execution module to execute the thermal shutdown procedure 1 is generated;

when the failure level is L5, a control signal is generated that causes the execution module to execute the thermal shutdown procedure 2.

In the step (IV), based on the control signal, the following corresponding operations are executed:

and (3) executing normal operation: all parts normally operate;

executing a cold shutdown process: the oil pump periodically reduces fuel output based on a control voltage signal of the control module; other related valves are closed based on the control module to generate control closing signals; when the rotating speed of the combustion engine is reduced to a certain rotating speed, the motor works based on a motor starting signal generated by the control module to cool the combustion engine.

Executing a hot shutdown process: the oil pump periodically and greatly reduces fuel output based on a control voltage signal of the control module until the output control voltage of the oil pump is 0, and when the output control voltage of the oil pump is reduced to 0, the motor works based on a motor starting signal generated by the control module to cool the engine for a certain time (such as 15 minutes).

Executing the hot shutdown process 1: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed.

Executing a hot shutdown process 2: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed; and simultaneously, all power supplies of the system are cut off, and all contactors are disconnected.

Further, the method also comprises the step (five) of fault prompt: displaying fault-related warning information generated based on the fault level (including the fault level, the specific component that may have a fault, the method of handling the fault), for example: in the case of determining the fault level as L1, a fault-related warning message is generated to indicate that the current fault level of the system is L1, there may be a particular component with a fault (e.g., one of the temperature sensors), and please perform an inspection step after the system is shut down.

In specific application, the gas turbine fault monitoring system is utilized to carry out each step of operation of the gas turbine fault monitoring method.

The fault monitoring system and the method of the gas turbine divide the fault into six grades: the L0 system can normally operate without failure; the L1 system is in a warning state, but may still continue to operate; the L2 system has general control error of the combustion engine; the L3 system has serious control error of the combustion engine; the L4 system is in an emergency stop state; the L5 system is in a failed state. According to different fault grades, different fault shutdown processes and cooling temperatures are set (different fault shutdown processes and cooling temperatures are set, and the time required for shutdown is different), so that the micro gas turbine can be more efficiently utilized. The gas turbine fault monitoring system and the method can protect the machine from safely entering a cooling shutdown process in a fault state, protect testers and facilitate the testers to debug, experiment and calibrate the system.

The various terms and phrases used herein have the ordinary meaning as is well known to those skilled in the art. To the extent that the terms and phrases are not inconsistent with known meanings, the meaning of the present invention will prevail.

Drawings

FIG. 1: the structure of the gas turbine fault monitoring system is schematically shown.

101, a detection module; 102. a fault level determination module; 103. a control module; 104. a fault response execution module; 105. and a fault prompt module.

Detailed Description

The present invention will be further described with reference to the following examples. However, the scope of the present invention is not limited to the following examples. It will be understood by those skilled in the art that various changes and modifications may be made to the invention without departing from the spirit and scope of the invention.

Embodiment 1 a gas turbine fault monitoring system

A gas turbine fault monitoring system comprising: a detection module 101, a fault level determination module 102, a control module 103 and a fault response execution module 104, as shown in fig. 1; wherein the content of the first and second substances,

a detection module: detecting parameters (such as temperature, pressure, speed and the like) and/or communication signals (such as a signal that an emergency stop button is pressed) of the gas turbine, and sending the detected data and/or communication signals to a fault level determination module;

a fault level determination module: determining a fault level based on the detection data and/or the communication signal of the detection module, and sending the fault level data and/or the signal to the control module;

a control module: generating a control signal and/or fault related warning information based on fault grade data and/or signals of the fault grade determination module, and sending the control signal to a fault response execution module;

and a fault corresponding execution module: and executing corresponding operation based on the control signal of the control module.

In particular, the amount of the solvent to be used,

the fault level determination module determines the fault level to be L0, L1, L2, L3, L4 or L5 based on the detection data and/or the communication signal of the detection module:

l0: the data of the detection module is in a normal range, the system is in a normal state, no fault information exists, and the fault level is L0;

for fault level L0, the system need not perform fault handling operations; at this time, if the system is in the standby state, the system can enter a normal starting operation state according to the requirements of the user, and if the system is already in the starting state, the system can continuously operate.

L1: a fault is determined to exist and the fault level is L1 when one or more of the following conditions occur:

(1) only one temperature sensor fails: the temperature data has jump or is not in a reasonable range (reference environment temperature);

(2) only one speed sensor fails: the speed data has speed jump or is not in a reasonable range;

(3) radial bearing/thrust bearing gas pressure is insufficient: the radial bearing/thrust bearing air pressure is lower than the lowest limit value of a reasonable range;

(4) starting rotating speed error: the rotating speed of the combustion engine does not reach the ignition speed within the specified time in the starting process;

(5) failure of ignition: the exhaust temperature of the internal combustion engine does not rise to a certain temperature value within a given time after ignition;

(6) failure in oil cutting: in the oil cutting process of the combustion engine, the exhaust temperature of the combustion engine does not rise to a certain temperature value;

in this state, the gas turbine can still normally enter the startup state or remain in operation, for example: when one path of temperature sensor makes mistakes, the system can still ensure the stable operation of the whole system through the feedback of the other path of temperature sensor; and the system can record fault information when the system is normally communicated and operated so as to carry out repair after the operation is finished.

L2: when the system has general errors of engine control during operation when one or more of the following conditions occur, determining the fault level of the engine to be L2:

(1) the exhaust temperature of the combustion engine is too high (such as more than 700degC) and the duration is too long (such as more than 10 seconds);

(2) and (3) accelerating too fast: the speed of the combustion engine per unit time is increased too fast in the rotating speed climbing process (for example, the rotating speed acceleration exceeds 5,000rpm/s in the acceleration process);

(3) and (3) accelerating failure: in the running state, when the fuel control voltage of the internal combustion engine is gradually increased, the rotating speed is reduced (for example, the rotating speed is reduced by more than 1,000rpm within 1 second);

(4) overspeed: during operation, the engine speed exceeds a target operating speed (e.g., 3,000 rpm);

(5) unstable rotating speed: at a stable operation working condition point, the rotating speed of the combustion engine is lower than the target operation rotating speed minus a certain threshold (such as lower than the target operation rotating speed by 5,000rpm), or higher than the target operation rotating speed plus a certain threshold (such as higher than the target operation rotating speed by 2,500 rpm);

(6) the temperature of the box body is overhigh: the temperature of the cold end of the combustion engine box is too high (for example, more than 50degC) or the temperature of the hot end of the combustion engine box is too high (for example, more than 80 degC);

(7) failure of fuel atomization results in ignition failure;

(8) internal communication faults of the gas turbine system.

L3: when one or more of the following conditions occur, the system has serious errors in the control of the combustion engine during operation, and the fault level of the combustion engine is determined to be L3:

(1) excessive engine exhaust temperatures (e.g., over 750 degC);

(2) all temperature sensors fail: in a standby or running state, all temperature sensors have temperature jump or are not in a reasonable range or have no temperature output;

(3) all speed sensors fail: in a standby or running state, all the speed sensors have speed jump or are not in a reasonable range;

(4) failure of oil pump control voltage: the difference value between the output control voltage of the oil pump and the feedback oil pump control voltage exceeds a set threshold value, and the oil pump control voltage makes mistakes;

(5) and (3) low-voltage power supply failure: the main power supplies of the oil pump power supply, the igniter power supply and the electromagnetic valve power supply are failed and cannot provide power.

L4: and the fault grade determining module receives a signal that an emergency stop button is pressed, or a signal that gas leaks, or a signal that an open fire occurs in the combustion engine box body, and determines that the system fault grade is L4. In this state, the cold and hot shutdown procedures will fail.

L5: the system is in a failure state for the highest level failure of the system. Normally, the system communication and operation functions cannot work normally in this state, for example, a system CPU fails.

The control module generates the following control signals based on the fault grade:

when the fault level is L0, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L1, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L2, generating a control signal for causing the execution module to execute a cold shutdown procedure;

when the fault level is L3, generating a control signal that causes the execution module to execute a hot shutdown procedure;

when the failure level is L4, a control signal that causes the execution module to execute the thermal shutdown procedure 1 is generated;

when the failure level is L5, a control signal is generated that causes the execution module to execute the thermal shutdown procedure 2.

The fault response execution module executes corresponding operations based on the control signals:

and (3) executing normal operation: all parts normally operate;

executing a cold shutdown process: the oil pump periodically reduces fuel output based on a control voltage signal of the control module; other related valves are closed based on the control module to generate control closing signals; when the rotating speed of the combustion engine is reduced to a certain rotating speed, the motor works based on a motor starting signal generated by the control module to cool the combustion engine.

Executing a hot shutdown process: the oil pump periodically and greatly reduces fuel output based on a control voltage signal of the control module until the output control voltage of the oil pump is 0, and when the output control voltage of the oil pump is reduced to 0, the motor works based on a motor starting signal generated by the control module to cool the engine for a certain time (such as 15 minutes).

Executing the hot shutdown process 1: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed.

Executing a hot shutdown process 2: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed; and simultaneously, all power supplies of the system are cut off, and all contactors are disconnected.

The gas turbine fault monitoring system further comprises a fault prompting module 105; the fault prompting module receives and displays fault-related warning information generated by the control module, for example: in the case of a fault level L1, the control module generates fault-related warning information, which includes a warning that the system currently has a fault level L1, that there is a particular component (e.g., one of the temperature sensors) that may have a fault, and a checking step after the system is shut down.

The detection module comprises a temperature sensor, a speed sensor, a pressure sensor and the like; and at least two temperature sensors are arranged at the rear end of the gas turbine.

The fault response execution module comprises a starting motor, a fuel flow control electromagnetic valve, a fuel pump and the like.

Embodiment 2 gas turbine fault monitoring method

The monitoring system of embodiment 1 is utilized, comprising the steps of:

detecting: detecting a parameter of the gas turbine (e.g., temperature, pressure, speed, etc.) and/or a communication signal (e.g., a signal that an emergency stop button is pressed);

(II) determining a fault level: determining a fault level based on the detection data and/or the communication signal;

(III) generating control signals and/or fault-related warning information: generating a control signal and/or fault-related warning information based on the fault level;

(IV) executing: based on the generated control signal, executing corresponding operation;

specifically, in the step (two), the fault level is determined to be L0, L1, L2, L3, L4, or L5:

l0: the data of the detection module is in a normal range, the system is in a normal state, no fault information exists, and the fault level is L0;

for fault level L0, the system need not perform fault handling operations; at this time, if the system is in the standby state, the system can enter a normal starting operation state according to the requirements of the user, and if the system is already in the starting state, the system can continuously operate.

L1: a fault is determined to exist and the fault level is L1 when one or more of the following conditions occur:

(1) only one temperature sensor fails: the temperature data has jump or is not in a reasonable range (reference environment temperature);

(2) only one speed sensor fails: the speed data has speed jump or is not in a reasonable range;

(3) radial bearing/thrust bearing gas pressure is insufficient: the radial bearing/thrust bearing air pressure is lower than the lowest limit value of a reasonable range;

(4) starting rotating speed error: the rotating speed of the combustion engine does not reach the ignition speed within the specified time in the starting process;

(5) failure of ignition: the exhaust temperature of the internal combustion engine does not rise to a certain temperature value within a given time after ignition;

(6) failure in oil cutting: in the oil cutting process of the combustion engine, the exhaust temperature of the combustion engine does not rise to a certain temperature value;

in this state, the gas turbine can still normally enter the startup state or remain in operation, for example: when one path of temperature sensor makes mistakes, the system can still ensure the stable operation of the whole system through the feedback of the other path of temperature sensor; and the system can record fault information when the system is normally communicated and operated so as to carry out repair after the operation is finished.

L2: when the system has general errors of engine control during operation when one or more of the following conditions occur, determining the fault level of the engine to be L2:

(1) the exhaust temperature of the combustion engine is too high (such as more than 700degC) and the duration is too long (such as more than 10 seconds);

(2) and (3) accelerating too fast: the speed of the combustion engine per unit time is increased too fast in the rotating speed climbing process (for example, the rotating speed acceleration exceeds 5,000rpm/s in the acceleration process);

(3) and (3) accelerating failure: in the running state, when the fuel control voltage of the internal combustion engine is gradually increased, the rotating speed is reduced (for example, the rotating speed is reduced by more than 1,000rpm within 1 second);

(4) overspeed: during operation, the engine speed exceeds a target operating speed (e.g., 3,000 rpm);

(5) unstable rotating speed: at a stable operation working condition point, the rotating speed of the combustion engine is lower than the target operation rotating speed minus a certain threshold (such as lower than the target operation rotating speed by 5,000rpm), or higher than the target operation rotating speed plus a certain threshold (such as higher than the target operation rotating speed by 2,500 rpm);

(6) the temperature of the box body is overhigh: the temperature of the cold end of the combustion engine box is too high (for example, more than 50degC) or the temperature of the hot end of the combustion engine box is too high (for example, more than 80 degC);

(7) failure of fuel atomization results in ignition failure;

(8) internal communication faults of the gas turbine system.

L3: when one or more of the following conditions occur, the system has serious errors in the control of the combustion engine during operation, and the fault level of the combustion engine is determined to be L3:

(1) excessive engine exhaust temperatures (e.g., over 750 degC);

(2) all temperature sensors fail: in a standby or running state, all temperature sensors have temperature jump or are not in a reasonable range or have no temperature output;

(3) all speed sensors fail: in a standby or running state, all the speed sensors have speed jump or are not in a reasonable range;

(4) failure of oil pump control voltage: the difference value between the output control voltage of the oil pump and the feedback oil pump control voltage exceeds a set threshold value, and the oil pump control voltage makes mistakes;

(5) and (3) low-voltage power supply failure: the main power supplies of the oil pump power supply, the igniter power supply and the electromagnetic valve power supply are failed and cannot provide power.

L4: and the fault grade determining module receives a signal that an emergency stop button is pressed, or a signal that gas leaks, or a signal that an open fire occurs in the combustion engine box body, and determines that the system fault grade is L4. In this state, the cold and hot shutdown procedures will fail.

L5: the system is in a failure state for the highest level failure of the system. Normally, the system communication and operation functions cannot work normally in this state, for example, a system CPU fails.

In the step (3), based on the fault level, the following control signals are generated:

when the fault level is L0, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L1, generating a control signal for enabling each component of the execution module to normally operate;

when the fault level is L2, generating a control signal for causing the execution module to execute a cold shutdown procedure;

when the fault level is L3, generating a control signal that causes the execution module to execute a hot shutdown procedure;

when the failure level is L4, a control signal that causes the execution module to execute the thermal shutdown procedure 1 is generated;

when the failure level is L5, a control signal is generated that causes the execution module to execute the thermal shutdown procedure 2.

In the step (IV), based on the control signal, the following corresponding operations are executed:

and (3) executing normal operation: all parts normally operate;

executing a cold shutdown process: the oil pump periodically reduces fuel output based on a control voltage signal of the control module; other related valves are closed based on the control module to generate control closing signals; when the rotating speed of the combustion engine is reduced to a certain rotating speed, the motor works based on a motor starting signal generated by the control module to cool the combustion engine.

Executing a hot shutdown process: the oil pump periodically and greatly reduces fuel output based on a control voltage signal of the control module until the output control voltage of the oil pump is 0, and when the output control voltage of the oil pump is reduced to 0, the motor works based on a motor starting signal generated by the control module to cool the engine for a certain time (such as 15 minutes).

Executing the hot shutdown process 1: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed.

Executing a hot shutdown process 2: the control module directly sets the output control voltage of the oil pump to be 0, the oil pump stops outputting fuel oil, and the oil way electromagnetic valve and the corresponding valve are closed; and simultaneously, all power supplies of the system are cut off, and all contactors are disconnected.

And (5) fault prompting: displaying fault-related warning information generated based on the fault level, for example: in the case of a fault level of L1, a fault-related warning message is generated, including a warning message indicating that the system is currently at a fault level of L1, that there may be a particular component with a fault (e.g., one of the temperature sensors), and a check step after the system is shut down.

The above examples are provided to those of ordinary skill in the art to fully disclose and describe how to make and use the claimed embodiments, and are not intended to limit the scope of the disclosure herein. Modifications apparent to those skilled in the art are intended to be within the scope of the appended claims.