CN115824516A - Leakage detection system and control method suitable for hydrogen-burning gas turbine - Google Patents
Leakage detection system and control method suitable for hydrogen-burning gas turbine Download PDFInfo
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- CN115824516A CN115824516A CN202211537178.0A CN202211537178A CN115824516A CN 115824516 A CN115824516 A CN 115824516A CN 202211537178 A CN202211537178 A CN 202211537178A CN 115824516 A CN115824516 A CN 115824516A
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Abstract
The invention provides a leakage detection system and a control method suitable for a hydrogen-fired gas turbine, which belong to the technical field of gas turbines, and the leakage detection system suitable for the hydrogen-fired gas turbine comprises: a hydrogen storage tank for storing hydrogen gas; the gas turbine housing is placed in a gas turbine plant; a placing cavity is arranged in the gas turbine housing and used for placing a gas turbine; the gas turbine is communicated with the hydrogen storage tank through a communication pipeline; a plurality of hydrogen detection devices are arranged in the gas turbine housing; a plurality of hydrogen monitoring modules are arranged on the communicating pipeline; the leakage detection system suitable for the hydrogen-fired gas turbine can detect whether hydrogen leakage exists in the gas turbine system before starting, in the starting process, in the running process and in the stopping process in real time by arranging the hydrogen detection device and the hydrogen monitoring module, thereby avoiding safety accidents caused by hydrogen leakage.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a leakage detection system and a control method suitable for a hydrogen-fired gas turbine.
Background
Gas turbines have been widely used in aviation, marine, electrical and other industrial processes due to their advantages of high efficiency, small size, etc. In the field of power generation, compared with a coal-fired boiler, the heavy-duty gas turbine has the advantages of high thermal efficiency, small pollution, quick response and the like, plays the roles of peak regulation by electricity and heating, and plays an important role.
The heavy-duty gas turbine usually uses natural gas as fuel, and the burning produces high temperature high pressure gas and promotes the turbine and do work, and then drives the generator electricity generation, though it is less polluted than coal-fired unit, but the natural gas belongs to hydrocarbon fuel, can produce a large amount of carbon dioxide after the burning, and the carbon emission problem still can not effectively be solved to the natural gas belongs to non-renewable energy, along with the increase of exploitation, its reserves also reduce gradually. Therefore, the use of clean renewable fuels instead of traditional hydrocarbon fuels is a necessary way for the future.
In recent years, with the continuous improvement of hydrogen preparation, storage and transportation technologies, hydrogen energy is rapidly developed due to the advantages of cleanness, environmental protection, sustainable utilization and the like, and hydrogen has great significance in energy technology innovation and energy development strategy as clean and efficient energy. Based on the natural gas hydrogen-doped combustion technology, various large gas turbine suppliers abroad and power plants abroad gradually develop the natural gas hydrogen-doped combustion technology, and the proposal is to completely adopt hydrogen to replace natural gas as fuel in the future, assist in carbon neutralization and have very good application prospect.
The hydrogen has obvious advantages as future clean energy of a combustion engine, but the characteristics of high diffusion speed, flammability, explosiveness and the like are paid enough attention to people. When the volume fraction of hydrogen in the air is between 4 and 75 percent, the explosion is easily caused when meeting a fire source; moreover, hydrogen may cause the equipment to generate hydrogen embrittlement phenomenon and generate cracks, so that hydrogen is leaked, and in addition, the ventilation condition in a combustion engine plant is poor, and the use risk of the combustion engine plant is far higher than that of natural gas.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the defect that the use risk of hydrogen used as future clean energy of a combustion engine in the prior art is far higher than that of natural gas, so that the leakage detection system suitable for the hydrogen-fired gas turbine is provided.
The invention also provides a control method suitable for leakage detection of the hydrogen-fired gas turbine.
In order to solve the above technical problem, the present invention provides a leakage detection system for a hydrogen-fired gas turbine, including:
a hydrogen storage tank for storing hydrogen gas;
the gas turbine housing is placed in a gas turbine plant; a placing cavity is arranged in the gas turbine housing and used for placing a gas turbine; the gas turbine is communicated with the hydrogen storage tank through a communication pipeline;
a plurality of hydrogen detection devices are arranged in the gas turbine housing; and the communicating pipeline is provided with a plurality of hydrogen monitoring modules.
As a preferred scheme, a hydrogen performance processor is arranged on a communication pipeline of the hydrogen storage tank and the gas turbine.
Preferably, electromagnetic valves are arranged on a communication pipeline between the hydrogen performance processor and the gas turbine.
As a preferred scheme, the hydrogen monitoring module comprises a first hydrogen monitoring module, a second hydrogen monitoring module and a third hydrogen monitoring module; the first hydrogen monitoring module is arranged between the hydrogen storage tank and the hydrogen performance processor; the second hydrogen monitoring module is arranged between the hydrogen performance processor and the electromagnetic valve; the third hydrogen monitoring module is disposed between the solenoid valve and the gas turbine.
Preferably, a hydrogen detection device is arranged above the electromagnetic valve and the gas turbine.
Preferably, the method further comprises the following steps:
a pressure gauge arranged on the hydrogen storage tank; the pressure gauge is used for monitoring the pressure of hydrogen in the hydrogen storage tank in real time.
Preferably, the method further comprises the following steps:
and the exhaust fan is arranged at the top of the gas turbine plant.
Preferably, the combustion engine housing comprises a cover body and a cover top; the cover top is rotatably arranged at the top of the cover body.
The present invention also provides a control method for leak testing of a hydrogen-fired gas turbine,
before the gas turbine is started, the hydrogen detection device works, and when the hydrogen content in the air is detected to reach 5% of the lower explosion limit, the gas turbine is prohibited to be started;
in the starting process of the gas turbine, when a leakage detection system of the hydrogen-fired gas turbine detects that hydrogen leaks, firstly determining a leakage position, and processing according to the leakage position and the leakage concentration;
in the operation process of the gas turbine, when a leakage detection system of the hydrogen-fired gas turbine detects that hydrogen leaks, firstly determining a leakage position, and processing according to the leakage position and the leakage concentration;
when a leakage detection system of the hydrogen-fired gas turbine detects that hydrogen leaks in the shutdown process of the gas turbine, the leakage position is determined firstly, and processing is carried out according to the leakage position and the leakage concentration.
The technical scheme of the invention has the following advantages:
1. the invention provides a leakage detection system suitable for a hydrogen-burning gas turbine, which comprises: a hydrogen storage tank and a gas turbine housing; a plurality of hydrogen detection devices are arranged in the gas turbine housing; and the communicating pipeline is provided with a plurality of hydrogen monitoring modules.
Whether hydrogen leakage exists in the combustion engine system before starting, in the starting process, in the running process and in the stopping process or not can be detected in real time by arranging the hydrogen detection device and the hydrogen monitoring module, and safety accidents caused by hydrogen leakage are avoided.
2. The leakage detection system suitable for the hydrogen-fired gas turbine provided by the invention has the advantages that the cover top is rotatably arranged on the cover body, meanwhile, the exhaust fan is arranged at the top of the gas turbine plant, the characteristic that the density of hydrogen is smaller than that of air is utilized, when hydrogen leaks in the gas turbine housing, the cover top is automatically opened, the hydrogen is discharged from the gas turbine housing from bottom to top, meanwhile, the exhaust fan is put into operation to suck the hydrogen discharged from the gas turbine housing and discharge the hydrogen to a region which is spacious, has no fire source and is good in ventilation around the gas turbine plant, so that the hydrogen aggregation can be effectively prevented, and potential safety hazards can be eliminated in time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a leak detection system suitable for use in a hydrogen-fired gas turbine according to the present invention.
Fig. 2 is a schematic structural view of the cover top of the present invention.
Description of reference numerals:
1. a hydrogen storage tank; 2. a pressure gauge; 3. a hydrogen monitoring module; 4. a hydrogen performance processor; 5. an electromagnetic valve; 6. a hydrogen gas detection device; 7. an exhaust fan; 8. a gas turbine; 9. a combustion engine housing; 10. an exhaust section; 11. a gas turbine plant; 12. and (6) covering the cover.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a leak detection system suitable for a hydrogen-fired gas turbine 8, including: a hydrogen storage tank 1 and a gas turbine housing 9; the gas turbine housing 9 is placed in a gas turbine plant 11; a placing cavity is arranged in the gas turbine housing 9 and used for placing the gas turbine 8, and the gas turbine 8 is communicated with the hydrogen storage tank 1 through a communication pipeline; the hydrogen storage tank 1 is used for storing hydrogen; an exhaust section 10 is provided on one side of the combustion engine housing 9.
A plurality of hydrogen detection devices 6 are arranged in the gas turbine housing 9;
the hydrogen can lead the hydrogen pipeline to generate hydrogen embrittlement phenomenon, thereby generating cracks, therefore, a plurality of hydrogen state monitoring modules are required to be arranged at different positions of the communicating pipeline for monitoring the hydrogen flow and pressure in the pipeline in real time, and timely sending out an alarm signal when hydrogen leakage occurs.
Whether hydrogen leakage exists in the combustion engine system before starting, in the starting process, in the running process and in the stopping process can be detected in real time by arranging the hydrogen detection device 6 and the hydrogen monitoring module 3, and safety accidents caused by hydrogen leakage are avoided.
Further, a hydrogen performance processor 4 is provided on a communication line between the hydrogen storage tank 1 and the gas turbine 8, and an electromagnetic valve 5 is provided on a communication line between the hydrogen performance processor 4 and the gas turbine 8.
Further, the hydrogen monitoring module 3 may monitor the hydrogen flow rate and the pressure at the same time, and specifically includes: the hydrogen monitoring system comprises a first hydrogen monitoring module 3, a second hydrogen monitoring module 3 and a third hydrogen monitoring module 3; the first hydrogen monitoring module 3 is arranged between the hydrogen storage tank 1 and the hydrogen performance processor 4; the second hydrogen monitoring module 3 is arranged between the hydrogen performance processor 4 and the electromagnetic valve 5; the third hydrogen monitoring module 3 is arranged between the solenoid valve 5 and the gas turbine 8.
The hydrogen monitoring module 3 monitors and calculates the difference between the hydrogen flow in the pipeline and the flow design value required by the gas turbine 8 under the current working condition in real time before the gas turbine 8 is started, in the starting process, in the running process and in the stopping process, monitors and calculates the difference between the hydrogen real-time pressure and the hydrogen pressure design value under the current working condition, and indicates that the hydrogen leaks when the gas source is sufficient and the monitored value is obviously smaller than the design value.
The hydrogen detection device 6 is arranged above the electromagnetic valve 5, around the gas turbine 8 and in the exhaust section 10 of the gas turbine 8 and is used for detecting whether the hydrogen leakage phenomenon exists in real time. The hydrogen leakage detection system can monitor the fuel engine system in real time in the whole process, and ensure the property safety of personal equipment.
A pressure gauge 2 is provided on the hydrogen storage tank 1, and the pressure gauge 2 is used to monitor the pressure of hydrogen gas in the hydrogen storage tank 1 in real time.
The combustion engine housing 9 comprises a cover body and a cover top 12; the cover top 12 is rotatably arranged at the top of the cover body, meanwhile, the cover top 12 is controllable to rotate, when hydrogen leaks from the combustion engine cover 9, the controllable cover top 12 can automatically rotate to open, and the hydrogen can be automatically discharged upwards due to low density.
The exhaust fan 7 is arranged at the top of the combustion engine plant 11, is in a closed state at ordinary times, and is opened along with the cover top 12 when hydrogen leakage occurs, so that the exhaust fan is used for continuously collecting hydrogen discharged from the cover top 12 and discharging the hydrogen to a region which is open, well ventilated and free of fire sources around the combustion engine plant 11.
Further, the pressure gauge 2, the hydrogen monitoring module 3 and the hydrogen detection device 6 are all connected with the gas turbine control system, in the using process, the pressure gauge 2, the hydrogen monitoring module 3 and the hydrogen detection device 6 monitor operation parameters in real time and transmit the parameters to the gas turbine control system, when hydrogen leakage occurs at a certain position, the gas turbine control system carries out processing calculation according to the leakage position and the parameter abnormal condition, and corresponding protective measures are taken according to the calculation result.
Example 2
The embodiment provides a control method suitable for leakage detection of a hydrogen-fired gas turbine 8, before the gas turbine 8 is started, a hydrogen detection device 6 works, and when the content of hydrogen in air is detected to reach 5% of the lower explosion limit, the gas turbine 8 is prohibited to be started;
further, before the gas turbine 8 is started, the hydrogen detection device 6 works in real time, and when the content of hydrogen in the air is detected to reach 5% of the lower explosion limit, the gas turbine 8 is prohibited to be started; the pressure gauge 2 and the hydrogen monitoring module 3 monitor the hydrogen pressure in the hydrogen storage tank 1 and the communication pipeline in real time, and when the hydrogen pressure is lower than a normal set value, the gas turbine 8 is prohibited to start.
If no hydrogen leaks before the gas turbine 8 is started, the gas turbine control system can control the starting machine sequentially according to the control logic, the housing ventilation system works in real time, and the pressure gauge 2, the hydrogen monitoring module 3 and the hydrogen detection device 6 monitor the operation parameters in real time.
When the leakage detection system for the hydrogen-fired gas turbine 8 described in example 1 detects a leakage of hydrogen gas during startup, the leakage position is first determined as follows:
a. when the gas turbine 8 is not ignited, if only one of the communication pipelines between the hydrogen storage tank 1 and the hydrogen performance processor 4, between the hydrogen performance processor 4 and the electromagnetic valve 5, and between the electromagnetic valve 5 and the gas turbine 8 leaks and is small (the real-time flow of hydrogen in the pipeline is lower than 95% of a designed flow value, namely an alarm value), the hydrogen monitoring module 3 sends an alarm signal to the gas turbine control system, and the gas turbine control system outputs a sequential shutdown instruction to enable the gas turbine 8 to be shutdown in sequential control, so that the startup fails; if at least two pipelines leak or at least one pipeline leaks a lot (the real-time flow of hydrogen in the pipeline is lower than 90% of the designed flow, namely the safety limit value), the combustion engine control system immediately outputs an emergency stop instruction, so that the combustion turbine 8 immediately emergently stops and fails to start.
When the gas turbine 8 is ignited, if only one of the pipelines between the hydrogen storage tank 1 and the hydrogen performance processor 4, between the hydrogen performance processor 4 and the electromagnetic valve 5, and between the electromagnetic valve 5 and the gas turbine 8 leaks, and the real-time flow in the leaking pipeline is smaller than an alarm value of the flow required by the gas turbine 8 under the current working condition, the hydrogen monitoring module 3 immediately sends an alarm signal to the gas turbine control system, and the gas turbine control system automatically reduces the output of the gas turbine 8 according to the reduction of the hydrogen until the gas turbine control system outputs a sequence control trip instruction, so that the gas turbine 8 performs sequence control trip and fails to start; when at least two pipelines are leaked, or at least one pipeline is leaked and the real-time flow of hydrogen in the pipeline is smaller than the safety limit value of the flow required by the gas turbine 8 under the current working condition, the gas turbine control system immediately sends an emergency trip signal to enable the gas turbine 8 to trip emergently and fail to start.
b. If the electromagnetic valve 5 or the gas turbine 8 body leaks, when any one hydrogen detection device 6 detects that the concentration of hydrogen in the gas turbine housing 9 reaches 5% of the lowest value of the explosion limit, an alarm signal is sent to a gas turbine control system, the gas turbine control system outputs a sequence control tripping instruction, the gas turbine 8 trips in sequence and fails to start, and meanwhile, the controllable cover top 12 is automatically opened, the exhaust fan 7 is put into operation, and hydrogen accumulated in the gas turbine housing 9 is exhausted from bottom to top; when any one hydrogen detection device 6 detects that the hydrogen concentration reaches 10% of the lowest explosion limit value, the gas turbine control system outputs an emergency trip instruction to trigger a protection action, so that the gas turbine 8 trips emergently and fails to start, and meanwhile, the controllable cover top 12 is automatically opened, the exhaust fan 7 is put into operation, and accumulated hydrogen is discharged.
c. If the existence of hydrogen is detected in the exhaust section 10 of the gas turbine 8 and the ignition system fails to ignite within 10 seconds, the gas turbine control system immediately sends an emergency stop signal to enable the gas turbine 8 to stop emergently and fail to start, and inert gas is adopted to purge the gas turbine 8 and exhaust the hydrogen; if the ignition is successful within 10 seconds and the existence of hydrogen is detected in the exhaust section 10 of the gas turbine 8, the hydrogen detection device 6 immediately sends an alarm signal to the gas turbine control system, and the gas turbine control system can increase the gas inlet flow at the IGV or reduce the hydrogen flow so as to completely combust the hydrogen, and if the hydrogen detection device 6 can still detect the existence of the hydrogen within 60 seconds, the gas turbine control system outputs a sequential control trip signal so as to ensure that the gas turbine 8 performs sequential control trip.
d. In the starting process, when the a and the b occur simultaneously, the gas turbine control system outputs an emergency trip signal no matter how much leakage quantity exists, so that the gas turbine 8 is in emergency trip; when a and c or b and c occur simultaneously and the ignition is successful in the case c, the control method of a and b is used as an output command of the combustion engine control system; when a, c or b, c occurs simultaneously and the ignition is not successful in the condition c, the combustion engine control system outputs an emergency trip signal to enable the combustion turbine 8 to trip emergently; when the a, the b and the c occur simultaneously, the combustion engine control system outputs an emergency trip signal no matter how much leakage occurs, so that the gas turbine 8 is tripped emergently.
The control method when the hydrogen leakage occurs in the operation process of the combustion engine system comprises the following steps:
a. when the leakage detection system detects that only one part of the communication pipeline has hydrogen leakage and the leakage amount is less (the real-time flow of the hydrogen in the pipeline is lower than 95 percent of the designed flow value, namely an alarm value), the gas turbine control system automatically reduces the unit load according to the real-time flow of the hydrogen in the pipeline until a trip signal is sent out, so that the gas turbine 8 trips in a sequential control manner; when the leakage detection system detects that at least two leaks exist in the communication pipeline or only one large amount of leaks exist (the real-time flow of hydrogen in the pipeline is lower than 90% of a designed flow value, namely a safety limit value), the combustion engine control system immediately outputs an emergency trip signal to enable the combustion turbine 8 to trigger a protection action, make the emergency trip and stop running.
b. When any one hydrogen detection device 6 detects that the concentration of hydrogen in the gas turbine housing 9 reaches 5% of the lowest explosion limit value, an alarm signal is sent to a gas turbine control system, the gas turbine control system outputs a sequential control tripping instruction to enable a gas turbine 8 to trip in a sequential control manner, and meanwhile, a controllable cover top 12 is automatically opened and an exhaust fan 7 is put into operation to enable the hydrogen accumulated in the gas turbine housing 9 to be discharged from bottom to top; when any one hydrogen detection device 6 detects that the hydrogen concentration reaches 10% of the lowest explosion limit value, the gas turbine control system outputs an emergency trip instruction to trigger a protection action, so that the gas turbine 8 trips emergently and stops running, and meanwhile, the controllable cover top 12 is automatically opened, the exhaust fan 7 is put into operation, and accumulated hydrogen is discharged.
c. When the existence of hydrogen is detected in the exhaust section 10 of the gas turbine 8, the hydrogen detection device 6 immediately sends an alarm signal to the gas turbine control system, the gas turbine control system can increase the air inlet flow at the IGV position or reduce the hydrogen flow to enable the hydrogen to be completely combusted, and if the hydrogen detection device 6 still continuously sends the alarm signal within 60 seconds, the gas turbine control system outputs a sequence control trip signal to enable the gas turbine 8 to trip in sequence control.
d. In the operation process, when the a and the b occur simultaneously, no matter how much leakage amount exists, the combustion engine control system outputs an emergency trip signal to enable the combustion turbine 8 to trip emergently; when a and c or b and c occur simultaneously, the control method of a and b is used as an output command of the combustion engine control system; when the a, the b and the c occur simultaneously, the combustion engine control system outputs an emergency trip signal no matter how much leakage occurs, so that the gas turbine 8 is tripped emergently.
The shutdown process refers to a stage from normal operation of the combustion engine system to shutdown of all equipment, and the control method of the combustion engine system during the shutdown process when hydrogen leakage occurs is as follows:
a. when the hydrogen leakage detection system detects that only one part of the communication pipeline has hydrogen leakage and the leakage amount is less (the real-time flow of the hydrogen in the pipeline is lower than 95 percent of the designed flow value, namely an alarm value), an alarm signal is immediately sent to the gas turbine control system, but the gas turbine 8 is still shut down in a sequential control mode according to normal shutdown logic; when the hydrogen leakage detection system detects that at least two leaks exist in the communication pipeline or only one large amount of leaks exist (the real-time flow of the hydrogen in the pipeline is lower than 90% of the designed flow, namely the safety limit value), the combustion engine control system immediately outputs an emergency stop instruction to enable the combustion turbine 8 to trigger a protection action and stop emergently.
b. When any one hydrogen detection device 6 detects that the concentration of hydrogen in the gas turbine housing 9 reaches 5% of the lowest explosion limit value, an alarm signal is sent to a gas turbine control system, but the gas turbine 8 is still shut down in sequence according to normal shutdown logic, and simultaneously, the controllable cover top 12 is automatically opened and the exhaust fan 7 is put into operation, so that the hydrogen accumulated in the gas turbine housing 9 is discharged from bottom to top; when any one hydrogen detection device 6 detects that the hydrogen concentration reaches 10% of the lowest explosion limit value, the gas turbine control system outputs an emergency stop instruction to trigger a protection action, so that the gas turbine 8 is stopped emergently, and meanwhile, the controllable cover top 12 is automatically opened, the exhaust fan 7 is put into operation, and accumulated hydrogen is discharged.
c. When the hydrogen detection device 6 detects that hydrogen exists in the exhaust section 10 of the gas turbine 8, an alarm signal is immediately sent to a gas turbine control system, but the gas turbine 8 is still shut down in a sequential control mode according to normal shutdown logic; when the exhaust section 10 of the gas turbine 8 detects that the hydrogen concentration reaches the limit concentration under the current working condition, the gas turbine control system immediately outputs an emergency stop instruction to trigger a protection action, so that the gas turbine 8 is stopped emergently.
d. In the shutdown process, when a, b or a, c or b, c or a, b, c occur simultaneously, if the combustion engine control systems all output a sequential control shutdown instruction, the gas turbine 8 is shutdown in a sequential control manner; if the combustion engine control system outputs at least one emergency stop command, the gas turbine 8 is stopped emergently.
In summary, the service life of the combustion engine can be shortened by the emergency stop and trip of the combustion engine, so that different control methods are designed according to the size of the hydrogen leakage position and the leakage amount, the emergency stop and trip can be avoided under the conditions of less hydrogen leakage position and small leakage amount, the combustion turbine 8 is protected to the maximum extent, and meanwhile, the potential safety hazard caused by hydrogen leakage is avoided.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (9)
1. A leak detection system adapted for use with a hydrogen-fired gas turbine, comprising:
a hydrogen storage tank for storing hydrogen gas;
the gas turbine housing is placed in a gas turbine plant; a placing cavity is arranged in the gas turbine housing and used for placing a gas turbine; the gas turbine is communicated with the hydrogen storage tank through a communication pipeline;
a plurality of hydrogen detection devices are arranged in the gas turbine housing; and the communicating pipeline is provided with a plurality of hydrogen monitoring modules.
2. A leak detection system adapted for use in a hydrogen-fired gas turbine as claimed in claim 1, wherein a hydrogen performance processor is provided on a communication line between said hydrogen storage tank and said gas turbine.
3. A leak detection system adapted for use in a hydrogen-fired gas turbine as claimed in claim 2, wherein a solenoid valve is provided on a communication line between said hydrogen performance processor and said gas turbine.
4. A leak detection system suitable for use in a hydrogen-fired gas turbine as claimed in claim 3, wherein said hydrogen monitoring modules comprise a first hydrogen monitoring module, a second hydrogen monitoring module and a third hydrogen monitoring module; the first hydrogen monitoring module is arranged between the hydrogen storage tank and the hydrogen performance processor; the second hydrogen monitoring module is arranged between the hydrogen performance processor and the electromagnetic valve; the third hydrogen monitoring module is disposed between the solenoid valve and the gas turbine.
5. A leak detection system suitable for a hydrogen-fired gas turbine as claimed in claim 4, wherein a hydrogen gas detection device is provided above both the solenoid valve and the gas turbine.
6. The leak detection system adapted for use with a hydrogen-fired gas turbine as recited in claim 1, further comprising:
a pressure gauge arranged on the hydrogen storage tank; the pressure gauge is used for monitoring the pressure of hydrogen in the hydrogen storage tank in real time.
7. The leak detection system adapted for use with a hydrogen-fired gas turbine as recited in claim 1, further comprising:
and the exhaust fan is arranged at the top of the gas turbine plant.
8. The leak detection system adapted for use with a hydrogen-fired gas turbine as recited in claim 1, wherein said engine enclosure comprises a cover body and a cover top; the cover top is rotatably arranged at the top of the cover body.
9. A control method for leak detection of a hydrogen-fired gas turbine is characterized in that,
before the gas turbine is started, the hydrogen detection device works, and when the hydrogen content in the air is detected to reach 5% of the lower explosion limit, the gas turbine is prohibited to be started;
in the starting process of the gas turbine, when a leakage detection system of the hydrogen-fired gas turbine detects that hydrogen leaks, firstly determining a leakage position, and processing according to the leakage position and the leakage concentration;
in the operation process of the gas turbine, when a leakage detection system of the hydrogen-fired gas turbine detects that hydrogen leaks, firstly determining a leakage position, and processing according to the leakage position and the leakage concentration;
when a leakage detection system of the hydrogen-fired gas turbine detects that hydrogen leaks in the shutdown process of the gas turbine, the leakage position is determined firstly, and processing is carried out according to the leakage position and the leakage concentration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211537178.0A CN115824516A (en) | 2022-12-02 | 2022-12-02 | Leakage detection system and control method suitable for hydrogen-burning gas turbine |
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| CN202211537178.0A CN115824516A (en) | 2022-12-02 | 2022-12-02 | Leakage detection system and control method suitable for hydrogen-burning gas turbine |
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