CN113513409B - Purge system for gas turbine and control method thereof - Google Patents
Purge system for gas turbine and control method thereof Download PDFInfo
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- CN113513409B CN113513409B CN202110960398.3A CN202110960398A CN113513409B CN 113513409 B CN113513409 B CN 113513409B CN 202110960398 A CN202110960398 A CN 202110960398A CN 113513409 B CN113513409 B CN 113513409B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/222—Fuel flow conduits, e.g. manifolds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0323—Arrangements specially designed for simultaneous and parallel cleaning of a plurality of conduits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0325—Control mechanisms therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/30—Preventing corrosion or unwanted deposits in gas-swept spaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Feeding And Controlling Fuel (AREA)
Abstract
The invention discloses a purging system for a gas turbine and a control method thereof, the purging system for the gas turbine is provided with a combustor, and the purging system for the gas turbine comprises: fuel branch, air supply subassembly and control assembly. The fuel branch is multiple, the fuel branches are communicated with the combustor, the gas source assembly is communicated with the fuel branches, the gas source assembly is used for outputting inert gas to the fuel branches so as to purge the fuel branches before the fuel is supplied to the combustor and after the fuel is withdrawn, the control assembly is communicated with the gas source assembly and the fuel branches, and the control assembly is used for controlling the gas source assembly to purge the fuel branches. The purging system for the gas turbine has high safety performance and is beneficial to improving the combustion stability of the gas turbine.
Description
Technical Field
The invention relates to the technical field of gas turbines, in particular to a purging system for a gas turbine and a control method of the purging system.
Background
The gas turbine is the core equipment in the field of power generation and driving, and the combustion chamber is the core component of the gas turbine and is used for converting chemical energy of fuel into heat energy and pushing the turbine to do work. As the power demand on the gas turbine increases, the combustor exit temperature also increases gradually. In order to meet the requirements of the gas turbine on indexes such as combustion stability and pollutant emission when the gas turbine works in a full load range, the fuel supply of a combustion chamber usually adopts a grading mode, and different fuel supply modes are adopted in different load ranges.
In the processes of starting, load adjusting and stopping of the combustion engine, different combustion mode schemes need to be switched according to the change of load, and the input and the closing of fuel of each stage of nozzle branch are controlled. After the fuel control valve of the corresponding nozzle branch is closed, fuel gas can be remained in the volumes of the pipeline behind the fuel control valve, the fuel ring pipe and the like. When the fuel branch is subjected to high-temperature air backflow, air in the combustion chamber at the outlet of the nozzle enters the pipeline volume through the nozzle and is mixed with fuel gas, so that danger is easily caused, spontaneous combustion and deflagration accidents are caused, and the fuel supply pipeline, a combustor and other parts of a gas turbine are damaged.
Disclosure of Invention
The present invention is directed to solving, at least in part, one of the technical problems in the related art.
Therefore, the embodiment of the invention provides the purging system for the gas turbine, which has high safety performance and is beneficial to improving the combustion stability of the gas turbine.
The embodiment of the invention also provides a control method for the purging system of the gas turbine.
According to an embodiment of the invention, a purge system for a gas turbine having a combustor includes a fuel branch, an air supply assembly, and a control assembly. The fuel branch is multiple, the fuel branches are communicated with the combustor, the gas source assembly is communicated with the fuel branches, the gas source assembly is used for outputting inert gas to the fuel branches so as to purge the fuel branches before the fuel is supplied to the combustor and after the fuel is withdrawn, the control assembly is communicated with the gas source assembly and the fuel branches, and the control assembly is used for controlling the gas source assembly to purge the fuel branches.
According to the purging system for the gas turbine, the inert gas can be introduced into the fuel branches through the gas source assembly, so that the fuel branches are purged before the fuel is supplied to the combustor and after the fuel exits, the residual fuel in the fuel branches can be cleaned, the risks of spontaneous combustion and deflagration when high-temperature gas reflows in the fuel branches are avoided, and the safety of the gas turbine in use is improved.
In some embodiments, the control assembly includes a pressure regulating device, the pressure regulating device is disposed between the air supply assembly and the fuel branch, and the pressure regulating device can regulate the air supply amount of the air supply assembly and the air pressure of the fuel branch according to the operation load and/or the combustion mode of the gas turbine.
In some embodiments, the control assembly further includes a plurality of purge switch valves, the purge switch valves are respectively disposed on the plurality of fuel branches, and the purge switch valves are configured to control on/off of the fuel branches.
In some embodiments, the control assembly further includes a plurality of flow detection devices, each of the plurality of flow detection devices is disposed on the fuel branch, and the flow detection devices are configured to detect the flow rate of the inert gas of the fuel branch.
In some embodiments, the control assembly further includes a plurality of pressure detection devices respectively disposed on the fuel branch, and the pressure detection devices are configured to detect a pressure in the fuel branch.
In some embodiments, the inert gas is nitrogen.
According to another embodiment of the present invention, a control method for a purge system for a gas turbine, which employs the purge system for a gas turbine described in any one of the above embodiments, includes:
purging the plurality of fuel branches via the air supply assembly prior to startup of the gas turbine;
after the combustion mode is switched for a first preset time, the control component controls a purging switch valve on the fuel branch to be opened at a first preset speed so as to purge the fuel branch by feeding a first preset volume of inert gas;
after the fuel branch purging is finished, the control assembly controls the purging switch valve on the fuel branch to be closed at a second preset speed.
According to the control method of the purging system for the gas turbine, provided by the invention, the inert gas can be introduced into the plurality of fuel branches through the gas source assembly, so that the fuel branches are purged before the fuel is supplied to the combustor and after the fuel is withdrawn, the residual fuel in the fuel branches can be cleaned, the risks of spontaneous combustion and deflagration are avoided when high-temperature gas in the fuel branches flows back, and the safety of the gas turbine in use is improved.
In some embodiments, the first preset speed is less than the second preset speed.
Drawings
FIG. 1 is a schematic view of a purge system for a gas turbine according to an embodiment of the invention.
FIG. 2 is a schematic diagram of the opening and closing of each stage of fuel branches of the control method for the purge system of the gas turbine according to the embodiment of the invention.
Reference numerals are as follows:
1. a fuel branch; 11. a CP stage fuel branch; 12. a class C fuel branch; 13. an O1 grade fuel branch; 14. an O2 grade fuel branch; 15. a class A fuel branch; 16. an OP stage fuel branch;
2. a gas source assembly;
3. a control component; 31. a pressure regulating device; 311. a pressure regulating valve; 32. a purge switch valve; 33. a flow detection device; 34. and a pressure detection device.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
A purge system for a gas turbine and a control method thereof according to an embodiment of the present invention will be described below with reference to fig. 1 and 2.
As shown in fig. 1, a purge system for a gas turbine according to an embodiment of the present invention, the gas turbine having a combustor, includes: a fuel branch 1, an air source assembly 2 and a control assembly 3. Fuel branch 1 is a plurality of, a plurality of fuel branch 1 and combustor intercommunication, air supply assembly 2 and a plurality of fuel branch 1 intercommunication, air supply assembly 2 is used for exporting inert gas to a plurality of fuel branch 1 to sweep fuel branch 1 before the combustor supplies fuel and after fuel withdraws from, control assembly 3 and air supply assembly 2 and fuel branch 1 intercommunication, control assembly 3 is used for controlling air supply assembly 2 and sweeps fuel branch 1.
According to the purging system for the gas turbine, inert gas can be introduced into the fuel branches 1 through the gas source assembly 2, so that the fuel branches 1 are purged before fuel is supplied to the combustor and after the fuel is withdrawn, residual fuel in the fuel branches 1 can be cleaned, the risks of spontaneous combustion and deflagration caused by high-temperature gas backflow in the fuel branches 1 are avoided, and the safety of the gas turbine in use is improved.
Optionally, the inert gas is nitrogen, which can improve the safety of the gas turbine during use.
In some embodiments, as shown in fig. 1, the control assembly 3 includes a pressure regulating device 31, the pressure regulating device 31 is disposed between the air supply assembly 2 and the fuel branch 1, and the pressure regulating device 31 can regulate the air supply amount of the air supply assembly 2 and the air pressure of the fuel branch 1 according to the operation load and/or the combustion mode of the gas turbine. It is understood that the pressure regulating device 31 may be a pressure regulating valve 311, the purge system for a gas turbine according to the embodiment of the present invention may regulate the purge pressure and the gas supply amount of the gas source assembly 2 through the pressure regulating valve 311, and the opening degree of the pressure regulating device 31 is controlled in real time through the control assembly 3 to calculate the nitrogen purge gas supply pressure and the required gas amount according to different loads and corresponding combustion modal designs of the gas turbine. In addition, the pressure regulating device 31 needs to feed back the valve position signal at the same time, and timely alarms when the valve position fails, so that the operation reliability of the gas turbine is improved.
Specifically, as shown in fig. 1, the pipe inlet of the fuel branch 1 is connected to the outlet of the pressure regulating device 31, and the pipe outlet of the fuel branch 1 is connected to the loop pipe inlet of the fuel branch 1. And each stage of fuel branch 1 can be provided with a closure element, a flow measuring device and a corresponding instrument measuring point for controlling the on-off of nitrogen purging, so that the reliability and the accuracy of the gas turbine purging are further improved.
In some embodiments, as shown in fig. 1, the control assembly 3 further includes a plurality of purge switch valves 32, the plurality of purge switch valves 32 are respectively disposed on the plurality of fuel branches 1, and the purge switch valve 32 is configured to control on/off of the fuel branches 1. It can be understood that the control system of the fuel branch 1 controls the purge on-off valve 32 to open and close, so that during the combustion mode adjustment of the gas turbine, the purge volume of the fuel control valve is required to be added to the pipeline volume in front of the nozzle for nitrogen replacement before the fuel of the corresponding fuel branch 1 is added (before the fuel control valve of the fuel branch 1 is opened) and after the fuel is removed (after the fuel control valve of the fuel branch 1 is closed). The purge switch valve 32 should be controlled to open slowly to prevent the combustion stability from being affected during the combustion mode switching process. The purge switch valve 32 should be controllable to close quickly to reduce the impact on the subsequent control of the combustion mode switching.
Further, as shown in fig. 1, the control assembly 3 further includes a plurality of flow detection devices 33, the plurality of flow detection devices 33 are respectively disposed on the plurality of fuel branches 1, and the plurality of flow detection devices 33 correspond to the plurality of fuel branches 1 one to one. The flow rate detection means 33 detects the flow rate of the inert gas in the fuel branch 1. The control assembly 3 further includes a plurality of pressure detection devices 34, the pressure detection devices 34 are respectively disposed on the fuel branch 1, and the pressure detection devices 34 are in one-to-one correspondence with the fuel branch 1. The pressure detection device 34 is used to detect the pressure in the fuel branch 1.
It can be understood that the nitrogen purge flow of each stage of fuel branch 1 is controlled by the purge gas supply pressure, and the excessive purge gas supply pressure can cause the purge nitrogen flow rate at the nozzle outlet of the corresponding fuel branch 1 to be high, and the high-speed purge to the flame root can cause adverse effect on the combustion stability. Meanwhile, due to the combustion oscillation in the combustion chamber of the gas turbine and the fluctuation of the outlet pressure of the fuel nozzle to a certain degree, the purging gas flow of each stage of the fuel branch 1 corresponding to the pressure before the fuel ring pipe needs to be monitored in real time through the flow detection device 33 and the pressure detection device 34, and if the purging gas supply pressure is too low, an alarm is given out to improve the running reliability of the gas turbine.
As shown in fig. 1 and 2, according to a control method of a purge system for a gas turbine according to another embodiment of the present invention, a purge system for a gas turbine according to an embodiment of the present invention is employed, and the control method includes:
before the gas turbine is started, a plurality of fuel branches 1 are purged through an air source assembly 2;
when the gas turbine reaches the ignition rotating speed, fuel is input through the fuel branches 1 for ignition;
after the gas turbine is ignited successfully, closing a fuel valve of the fuel branch 1;
after the combustion mode switching starts for a first preset time, the control component 3 controls the purge switch valve 32 on the fuel branch 1 to open at a first preset speed so as to purge the fuel branch 1 by throwing a first preset volume of inert gas;
after the purging of the fuel branch 1 is finished, the control component 3 controls the purging switch valve 32 on the fuel branch 1 to be closed at a second preset speed.
According to the control method of the purging system for the gas turbine, the inert gas can be introduced into the fuel branches 1 through the gas source assembly 2, so that the fuel branches 1 are purged before the fuel is supplied to the combustor and after the fuel exits, the residual fuel in the fuel branches 1 can be cleaned, the risks of spontaneous combustion and deflagration when high-temperature gas reflows in the fuel branches 1 are avoided, and the safety of the gas turbine in use is improved.
In some embodiments, the first preset speed is less than the second preset speed. It is understood that the purge switching valve 32 needs to be opened slowly to prevent the influence on the combustion stability during the combustion mode switching. The purge switch valve 32 needs to be closed quickly to reduce the influence on the subsequent control of the combustion mode switching, so that the reliability of the gas turbine during operation can be improved.
In some specific embodiments, as shown in fig. 1 and 2, the plurality of fuel branches 1 includes six fuel branches, specifically, a CP-stage fuel branch 11, a C-stage fuel branch 12, an O1-stage fuel branch 13, an O2-stage fuel branch 14, an a-stage fuel branch 15, and an OP-stage fuel branch 16. For example, fig. 2 is a schematic diagram illustrating a method for controlling the nitrogen purge switch of each fuel branch 1 of the corresponding purge system during the start-up of the gas turbine.
S1: before the gas turbine is started, the six fuel branches 1 are purged, the pressure regulating valve 311 is opened to a set opening degree, the purging switch valves 32 of the six fuel branches 1 are slowly opened, purging nitrogen with a certain multiple of the pipeline volume between the fuel input control valve and the fuel nozzle is used for purging before fuel input, and after purging is finished, the pressure regulating valve 311 and the purging switch valves 32 of the six fuel branches 1 are quickly closed;
s2: after the gas turbine reaches the ignition rotating speed, the CP-level fuel branch 11, the C-level fuel branch 12, the O1-level fuel branch 13 and the OP-level fuel branch 16 are filled with fuel for ignition; after ignition is successful, the fuel control valve of the C-level fuel branch 12 is closed, after a period of time, the pressure regulating valve 311 is opened to a set opening, the purging switch valve 32 of the C-level fuel branch 12 is slowly opened, nitrogen with a certain multiple volume of the pipeline volume between the fuel control valve and the fuel nozzle is put into the fuel control valve for replacement, and after purging is finished, the pressure regulating valve 311 and the purging switch valve 32 of the C-level fuel branch 12 are quickly closed;
s3: the gas turbine is subjected to load increase under the condition that the CP-stage fuel branch 11, the O1-stage fuel branch 13 and the OP-stage fuel branch 16 work together, after the load reaches 10%, the pressure regulating valve 311 is opened to a set opening degree, the purging switch valve 32 of the C-stage fuel branch 12 is slowly opened, nitrogen purging is performed before fuel with a certain volume is input, and the purging is closed after the purging is finished. After the purging switch valve 32 is completely closed for a period of time, the fuel control valve of the C-level fuel branch 12 is opened, fuel is put into the C-level fuel branch, and the C-level fuel branch and the CP-level fuel branch 11, the O1-level fuel branch 13 and the OP-level fuel branch 16 work together after the combustion mode switching is completed;
s4: after the load of the gas turbine reaches 30% of load, the pressure regulating valve 311 is opened to a set opening, the purge on-off valve 32 of the O2-stage fuel branch 14 is slowly opened, nitrogen purging is performed before a certain volume of fuel is put into the O2-stage fuel branch, and the O2-stage fuel branch is closed after purging is finished. After the purging switch valve 32 of the O2-stage fuel branch 14 is completely closed for a period of time, the fuel control valve of the O2-stage fuel branch 14 is opened to input fuel, and after the combustion mode switching is completed, the C-stage fuel branch 12, the CP-stage fuel branch 11, the OP-stage fuel branch 16 and the O2-stage fuel branch 14 work together; after the fuel control valve of the O1-level fuel branch 13 is closed for a period of time, the purging switch valve 32 of the O1-level fuel branch 13 is opened, nitrogen purging is performed after fuel exits, and the purging is closed after the purging is finished;
s5: after the load of the gas turbine reaches 50% of the load, the pressure regulating valve 311 is opened to a set opening, the purge switch valve 32 of the O1-level fuel branch 13 is slowly opened, nitrogen purging is performed before a certain volume of fuel is put into the O1-level fuel branch, and the O1-level fuel branch is closed after purging is finished. After the purge switch valve 32 of the O1-level fuel branch 13 is completely closed for a period of time, the fuel control valve of the O1-level fuel branch 13 is opened to put in fuel, and after the combustion mode switching is completed, the CP-level fuel branch 11, the C-level fuel branch 12, the O1-level fuel branch 13, the O2-level fuel branch 14 and the OP-level fuel branch 16 work together;
s6: after the load of the gas turbine is increased to a basic load, the gas turbine is switched to a low pollution mode, after fuel control valves of the CP-stage fuel branch 11 and the OP-stage fuel branch 16 are completely closed for a period of time, the pressure regulating valve 311 is opened to a set opening degree, the purging switch valves 32 of the CP-stage fuel branch 11 and the OP-stage fuel branch 16 are slowly opened, purging is performed after fuel exits, and the purging is closed after the purging is finished; only the C-stage fuel branch 12, the O1-stage fuel branch 13 and the O2-stage fuel branch 14 work together.
The control method of the fuel turbine purging system provided by the embodiment of the invention adopts the six-stage fuel branch 1, so that the fuel can be opened or closed according to different combustion modes, the control requirements that the fuel of each stage of fuel branch 1 needs to be purged continuously before being put into and after being withdrawn are met, other follow-up control actions are not influenced, and the practicability is better.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be interconnected within two elements or in a relationship where two elements interact with each other unless otherwise specifically limited. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" and the like mean that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (6)
1. A purge system for a gas turbine, the gas turbine having a combustor, the purge system for a gas turbine comprising:
the fuel branches are communicated with the combustors, and correspond to the combustors one by one;
an air supply assembly in communication with the plurality of fuel legs for outputting inert gas to the plurality of fuel legs for purging all of the fuel legs prior to startup of the gas turbine, for purging the exiting fuel legs after startup of the gas turbine, and for purging the respective fuel legs prior to refueling;
the control assembly is communicated with the gas source assembly and the fuel branch, the control assembly is used for controlling the gas source assembly to purge the fuel branch, the control assembly further comprises a plurality of purge switch valves, the purge switch valves are respectively arranged on the fuel branches, and the purge switch valves are used for controlling the on-off of the fuel branches.
2. A purge system for a gas turbine according to claim 1, wherein the control assembly comprises a pressure regulating device, the pressure regulating device is disposed between the air supply assembly and the fuel branch, and the pressure regulating device can regulate the air supply amount of the air supply assembly and the air pressure of the fuel branch according to the operation load and/or combustion mode of the gas turbine.
3. A purge system for a gas turbine according to claim 1, wherein the control module further comprises a plurality of flow detecting means provided on the fuel branch, respectively, the flow detecting means being configured to detect the flow of the inert gas of the fuel branch.
4. A purge system for a gas turbine according to claim 1, wherein the control module further comprises a plurality of pressure detecting devices respectively disposed on the fuel branches, the pressure detecting devices being configured to detect the pressure in the fuel branches.
5. The purge system for a gas turbine as set forth in claim 1, wherein said inert gas is nitrogen.
6. A control method for a purge system for a gas turbine, characterized by employing the purge system for a gas turbine according to any one of claims 1 to 5, the control method comprising:
purging the plurality of fuel legs through the air supply assembly prior to startup of the gas turbine;
after the combustion mode switching starts for a first preset time, the control component controls a purging switch valve on the fuel branch to be opened at a first preset speed so as to purge the fuel branch by throwing a first preset volume of inert gas;
after the fuel branch purging is finished, the control assembly controls the purging switch valve on the fuel branch to be closed at a second preset speed.
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| CN202110960398.3A CN113513409B (en) | 2021-08-20 | 2021-08-20 | Purge system for gas turbine and control method thereof |
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| CN202110960398.3A CN113513409B (en) | 2021-08-20 | 2021-08-20 | Purge system for gas turbine and control method thereof |
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| CN113982758B (en) * | 2021-11-09 | 2023-04-07 | 烟台杰瑞石油装备技术有限公司 | Gas supply system, gas supply method, and equipment equipped with turbine engine |
| CN114923198B (en) * | 2022-03-30 | 2024-05-28 | 常德市三一机械有限公司 | Burner control method and device, burner and asphalt mixing plant |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2669493A2 (en) * | 2012-05-31 | 2013-12-04 | General Electric Company | Utilization of fuel gas for purging a dormant fuel gas circuit |
| CN104727946A (en) * | 2015-01-04 | 2015-06-24 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Fuel switching device for multi-fuel combustion chamber of gas turbine and control device of fuel switching device |
| CN108302552A (en) * | 2016-12-30 | 2018-07-20 | 安萨尔多能源瑞士股份公司 | Method, provisioning component and the gas turbine of the provisioning component of operation supply combustion gas and inert media |
| CN113108315A (en) * | 2021-05-13 | 2021-07-13 | 中国联合重型燃气轮机技术有限公司 | Nozzle for combustion chamber and gas turbine |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6892544B2 (en) * | 2002-04-29 | 2005-05-17 | Honeywell International Inc. | Flow divider & purge air system for a gas turbine engine |
| JP4865476B2 (en) * | 2006-09-28 | 2012-02-01 | 三菱重工業株式会社 | Gas turbine start / stop method and start / stop control device |
| DE102008014744A1 (en) * | 2008-03-18 | 2009-09-24 | Rolls-Royce Deutschland Ltd & Co Kg | Gas turbine burner for a gas turbine with a rinsing mechanism for a fuel nozzle |
| GB2460634B (en) * | 2008-06-02 | 2010-07-07 | Rolls Royce Plc | Combustion apparatus |
| US20120174591A1 (en) * | 2009-09-24 | 2012-07-12 | Matthias Hase | Fuel Line System, Method for Operating of a Gas Turbine, and a Method for Purging the Fuel Line System of a Gas Turbine |
| US20110265488A1 (en) * | 2010-04-29 | 2011-11-03 | General Electric Company | ALTERNATE METHOD FOR DILUENT INJECTION FOR GAS TURBINE NOx EMISSIONS CONTROL |
| KR101407829B1 (en) * | 2010-10-28 | 2014-06-17 | 미츠비시 쥬고교 가부시키가이샤 | Gas turbine and gas turbine plant provided with same |
| CN104373220A (en) * | 2013-08-15 | 2015-02-25 | 西门子公司 | Purge system for gas turbine, and method thereof |
| FR3030629B1 (en) * | 2014-12-23 | 2017-02-03 | Ge Energy Products France Snc | INSTALLATION AND METHOD FOR SUPPLYING A COMBUSTION CHAMBER HAVING A VENTILATED CAVITY BY HOT AIR FROM PURGE |
| CN205559072U (en) * | 2016-04-27 | 2016-09-07 | 武汉钢铁股份有限公司 | Sweeping gas body pressure stability's gas turbine |
| US10082089B2 (en) * | 2016-08-25 | 2018-09-25 | General Electric Company | Systems and methods to improve shut-down purge flow in a gas turbine system |
-
2021
- 2021-08-20 CN CN202110960398.3A patent/CN113513409B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2669493A2 (en) * | 2012-05-31 | 2013-12-04 | General Electric Company | Utilization of fuel gas for purging a dormant fuel gas circuit |
| CN104727946A (en) * | 2015-01-04 | 2015-06-24 | 北京华清燃气轮机与煤气化联合循环工程技术有限公司 | Fuel switching device for multi-fuel combustion chamber of gas turbine and control device of fuel switching device |
| CN108302552A (en) * | 2016-12-30 | 2018-07-20 | 安萨尔多能源瑞士股份公司 | Method, provisioning component and the gas turbine of the provisioning component of operation supply combustion gas and inert media |
| CN113108315A (en) * | 2021-05-13 | 2021-07-13 | 中国联合重型燃气轮机技术有限公司 | Nozzle for combustion chamber and gas turbine |
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