CN114909673A - Self-starting method and device of plasma ignition system based on coal-fired unit - Google Patents
Self-starting method and device of plasma ignition system based on coal-fired unit Download PDFInfo
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- CN114909673A CN114909673A CN202210576313.6A CN202210576313A CN114909673A CN 114909673 A CN114909673 A CN 114909673A CN 202210576313 A CN202210576313 A CN 202210576313A CN 114909673 A CN114909673 A CN 114909673A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000003245 coal Substances 0.000 claims abstract description 50
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 230000004044 response Effects 0.000 claims abstract description 15
- 239000000498 cooling water Substances 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 4
- 230000000977 initiatory effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 7
- 230000004913 activation Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 238000012790 confirmation Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003303 reheating Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/02—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs for igniting solid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
- F23Q7/22—Details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The application provides a self-starting method and a self-starting device of a plasma ignition system based on a coal-fired unit, wherein the method comprises the following steps: responding to a trigger operation for starting the plasma sequential control, and detecting whether the starting requirement of the plasma sequential control is met; starting a first step instruction of plasma sequential control in response to successfully starting the plasma sequential control and checking that a plasma sequential control starting permission condition meets a preset condition; responding to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state, and controlling the pneumatic quick-closing valve of the outlet of the coal mill B to be opened; controlling a plurality of plasma igniters to start arc in sequence in response to the pneumatic quick-closing valve at the outlet B of the coal mill being in a full-open state; responding to the condition that the plasma ignition energy meets the preset plasma ignition capacity, and sequentially adjusting the baffle opening of a target layer in the plurality of secondary air baffles; and responding to the condition that the baffle opening degree of the target layer in the secondary air baffles meets the corresponding condition, and determining that the plasma sequential control is started to finish the starting of the plasma ignition system.
Description
Technical Field
The application relates to the technical field of coal-fired power generation, in particular to a self-starting method and a self-starting device of a plasma ignition system based on a coal-fired unit.
Background
In the field of coal-fired power generation, a large amount of fuel oil is consumed for realizing ignition of a boiler combustion system by adopting a traditional fuel oil ignition mode, and in the process of fuel oil ignition, the problems of insufficient combustion of pulverized coal and energy waste caused by difficulty in accurately controlling the amount of the pulverized coal are easy to occur, and the combustion rate of the pulverized coal is reduced. In recent years, ignition of a boiler combustion system is generally realized by an ultra-supercritical double-reheating coal-fired unit through a plasma ignition technology. Compared with the traditional mode of igniting fuel by using a burner, the plasma ignition technology can greatly reduce energy consumption due to the advantages of no fuel and high ignition speed.
In the process of realizing ignition of the boiler combustion system by using the plasma ignition technology, an operator generally starts the plasma ignition system in a manual mode. Due to the complex operation steps, the plasma ignition failure of the ultra-supercritical secondary reheating coal-fired unit is likely to occur in the ignition process, and the boiler starting is seriously influenced.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
To this end, an embodiment of the first aspect of the present application provides a self-starting method for a plasma ignition system based on a coal-fired unit, including:
responding to a trigger operation for starting the plasma sequential control, and detecting whether the starting requirement of the plasma sequential control is met;
starting a first step instruction of plasma sequential control in response to successfully starting the plasma sequential control and checking that a plasma sequential control starting permission condition meets a preset condition; the first step of the plasma sequential control instruction is used for indicating the electric valve of a sealing air door of a coal mill B to be fully opened;
responding to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state, and controlling the pneumatic quick-closing valve of the outlet of the coal mill B to be opened;
responding to the fact that the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state, and controlling a plurality of plasma igniters to sequentially start arcs;
responding to the condition that the plasma ignition energy meets the preset plasma ignition capacity, and sequentially adjusting the baffle opening of a target layer in the plurality of secondary air baffles;
and determining that the plasma sequential control is started to finish the starting of the plasma ignition system in response to the fact that the baffle opening of the target layer in the plurality of secondary air baffles meets the corresponding condition.
In some embodiments of the present application, the checking that the plasma compliance start-up allowing condition satisfies a preset condition includes: checking whether a plasma ignition mode button is put in; checking the air pressure of a main pipe at the outlet of the plasma carrier fan, the running state of a plasma cooling water pump and the pressure of the main pipe at the outlet of the plasma cooling water; responding to the plasma ignition mode button is already put into use, the air pressure of the outlet main pipe of the plasma carrier fan meets a preset main pipe air pressure target value, the running state of the plasma carrier fan is in operation, the pressure of the outlet main pipe of the plasma cooling water meets the preset main pipe pressure target value, and the running state of the plasma cooling water pump is in operation, and determining that the plasma sequential control starting permission condition meets the preset condition.
In some embodiments of the present application, the controlling coal mill B outlet pneumatic quick-closing valve to open comprises: and starting a second step command of plasma sequential control, wherein the second step command of plasma sequential control is used for indicating the opening of the pneumatic quick-closing valves of the outlets #1, 2, 3 and 4 of the coal mill B.
In some embodiments of the present application, the controlling the plurality of plasma igniters to perform the arc starting operation in sequence includes: starting a third step command of plasma sequential control; wherein the third step of the plasma sequential control is used for instructing to first control a first igniter in a plasma ignition layer B1 to start arc, and after delaying a first time, to control an igniter in a plasma ignition layer B2 at the same position as the first igniter to start arc, and after delaying a second time, to control a second igniter in a plasma ignition layer B1 to start arc, and after delaying a third time, to control an igniter in a plasma ignition layer B2 at the same position as the second igniter to start arc, and after delaying a fourth time, to control a third igniter in a plasma ignition layer B1 to start arc, and after delaying a fifth time, to control an igniter in a plasma ignition layer B2 at the same position as the third igniter to start arc, and after delaying a sixth time, to control a fourth igniter in a plasma ignition layer B1 to start arc, and controlling an igniter in the plasma ignition B2 layer at the same position as the fourth igniter to start the arc after a seventh delay time.
In some embodiments of the present application, the first time is less than the second time, the second time is less than the third time, the third time is less than the fourth time, the fourth time is less than the fifth time, the fifth time is less than the sixth time, the sixth time is less than the seventh time, and the first to seventh times are in an arithmetic progression.
In some embodiments of the present application, sequentially adjusting a baffle opening of a target layer among the plurality of overfire air baffles comprises: starting a plasma sequential control step 4 instruction; and the 4 th step of plasma sequential control instruction is used for indicating that the opening of the AB2 layer of the secondary air baffle is controlled to be adjusted to 60%, then the opening of the BI layer of the secondary air baffle is controlled to be adjusted to 40%, then the opening of the BC1 layer of the secondary air baffle is controlled to be adjusted to 40%, and then the opening of the BO layer of the secondary air baffle is controlled to be adjusted to 20%.
The embodiment of the second aspect of the application provides a plasma ignition system self-starting device based on a coal-fired unit, which comprises:
the detection module responds to the trigger operation for starting the plasma sequential control and detects whether the starting requirement of the plasma sequential control is met;
the first starting module is used for responding to the condition that the plasma sequential control is successfully started and the plasma sequential control starting permission condition is checked to meet the preset condition, and starting a first step instruction of the plasma sequential control; the first step of plasma sequential control instruction is used for indicating the full opening of an electric valve of a sealing air door of a coal mill B;
the second starting module is used for responding to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state, and controlling the pneumatic quick-closing valve of the outlet of the coal mill B to be opened;
the third starting module is used for responding to the situation that the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state, and controlling the plurality of plasma igniters to sequentially start arcs;
the fourth starting module is used for responding to the condition that the plasma ignition energy meets the preset plasma ignition capacity and sequentially adjusting the baffle opening of the target layer in the plurality of secondary air baffles;
and the fifth starting module is used for responding to the condition that the baffle opening degree of a target layer in the plurality of secondary air baffles meets the corresponding condition, determining that the sequential control of the starting plasma is finished, and finishing the starting of the plasma ignition system.
In some embodiments of the present application, the checking that the plasma compliance start-up allowing condition satisfies a preset condition includes: checking whether a plasma ignition mode button is put in; checking the air pressure of a main pipe at the outlet of the plasma carrier fan, the running state of a plasma cooling water pump and the pressure of the main pipe at the outlet of the plasma cooling water; responding to the plasma ignition mode button is already put into use, the air pressure of the outlet main pipe of the plasma carrier fan meets a preset main pipe air pressure target value, the running state of the plasma carrier fan is in operation, the pressure of the outlet main pipe of the plasma cooling water meets the preset main pipe pressure target value, and the running state of the plasma cooling water pump is in operation, and determining that the plasma sequential control starting permission condition meets the preset condition.
In some embodiments of the present application, the second starting module is specifically configured to: and starting a second step command of plasma sequential control, wherein the second step command of plasma sequential control is used for indicating the opening of the pneumatic quick-closing valves of the outlets #1, 2, 3 and 4 of the coal mill B.
In some embodiments of the present application, the third starting module is specifically configured to: starting a third step command of plasma sequential control; wherein the third step of the plasma sequential control is used for instructing to first control a first igniter in a plasma ignition layer B1 to start arc, and after delaying a first time, to control an igniter in a plasma ignition layer B2 at the same position as the first igniter to start arc, and after delaying a second time, to control a second igniter in a plasma ignition layer B1 to start arc, and after delaying a third time, to control an igniter in a plasma ignition layer B2 at the same position as the second igniter to start arc, and after delaying a fourth time, to control a third igniter in a plasma ignition layer B1 to start arc, and after delaying a fifth time, to control an igniter in a plasma ignition layer B2 at the same position as the third igniter to start arc, and after delaying a sixth time, to control a fourth igniter in a plasma ignition layer B1 to start arc, and controlling an igniter in the plasma ignition B2 layer at the same position as the fourth igniter to start the arc after a seventh delay time.
In some embodiments of the present application, the first time is less than the second time, the second time is less than the third time, the third time is less than the fourth time, the fourth time is less than the fifth time, the fifth time is less than the sixth time, the sixth time is less than the seventh time, and the first to seventh times are in an arithmetic progression.
In some embodiments of the present application, the fourth starting module is specifically configured to: starting a plasma sequential control step 4 instruction; and the 4 th step of plasma sequential control instruction is used for indicating that the opening of the AB2 layer of the secondary air baffle is controlled to be adjusted to 60%, then the opening of the BI layer of the secondary air baffle is controlled to be adjusted to 40%, then the opening of the BC1 layer of the secondary air baffle is controlled to be adjusted to 40%, and then the opening of the BO layer of the secondary air baffle is controlled to be adjusted to 20%.
The technical scheme provided by the embodiment of the application can have the following beneficial effects: the plasma ignition system can be automatically started without manually checking, confirming and starting each step by operators, so that the automation level of the plasma ignition technology can be improved, the operation steps of the operators are simplified, and the condition of plasma ignition failure caused by complicated ignition steps is reduced.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a self-starting method of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a plasma ignition system provided in an embodiment of the present application;
FIG. 3 is a schematic flow chart of another self-starting method of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application;
fig. 4 is a structural block diagram of a self-starting device of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.
The self-starting method and device of the plasma ignition system based on the coal-fired unit according to the embodiment of the application are described below with reference to the attached drawings.
Fig. 1 is a schematic flow chart of a self-starting method of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application. It should be noted that, the plasma ignition system in the method according to the embodiment of the present application, as shown in fig. 2, includes: the device comprises boiler closed water (A001), plasma cooling water pumps (A002 and A003), plasma carrier cooling fans (A004 and A005), a boiler closed water return main pipe (A006), a plasma ignition B1 layer (A007), a plasma ignition B1 layer #1 igniter (A008), a plasma ignition B1 layer #2 igniter (A009), a plasma ignition B1 layer #3 igniter (A010), a plasma ignition B1 layer #4 igniter (A011), a plasma ignition B2 layer (A012), a plasma ignition B2 layer #1 igniter (A013), a plasma ignition B2 layer #2 igniter (A014), a plasma ignition B2 layer #3 igniter (A015) and a plasma ignition B2 layer #4 igniter (A016).
As shown in fig. 1, a self-starting method of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application may include the following steps:
The starting requirements of plasma sequential control comprise that the air pressure of a plasma carrier fan outlet main pipe is normal, the operation state of a plasma carrier fan is in operation (at least one plasma carrier fan is in operation), the pressure of a plasma cooling water outlet main pipe is normal, the operation state of a plasma cooling water pump is in operation (at least one plasma cooling water pump is in operation), and a plasma ignition mode button is put into operation. When the trigger operation of the plasma sequential control is started, whether the current equipment state meets the starting requirement of the plasma sequential control is checked. And if the current equipment state does not meet the starting requirement of the plasma sequential control, waiting is carried out, and the subsequent command of the plasma sequential control cannot be started.
And 103, controlling the pneumatic quick-closing valve at the outlet of the coal mill B to be opened in response to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state.
And after a first step command of plasma sequential control is started, detecting the state of the electric valve of the sealing air door of the coal mill B, and controlling to open the pneumatic quick-closing valve of the outlet of the coal mill B when the electric valve of the sealing air door of the coal mill B is in a full-open state.
And 104, controlling a plurality of plasma igniters to start arc in sequence in response to the fact that the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state.
And detecting the state of the pneumatic quick-closing valve at the outlet of the coal mill B, and controlling the plurality of plasma igniters to sequentially start arc when the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state. In some embodiments of the present application, the third step of plasma sequential control commands may be used to instruct first controlling a first igniter in the B1 plasma ignition layer to start arc, and after delaying a first time, controlling an igniter in the B2 plasma ignition layer at the same position as the first igniter to start arc, and after delaying a second time, controlling a second igniter in the B1 plasma ignition layer to start arc, and after delaying a third time, controlling an igniter in the B2 plasma ignition layer at the same position as the second igniter to start arc, and after delaying a fourth time, controlling a third igniter in the B1 plasma ignition layer to start arc, and after delaying a fifth time, controlling an igniter in the B2 plasma ignition layer at the same position as the third igniter to start arc, and after delaying a sixth time, controlling a fourth igniter in the B1 plasma ignition layer to start arc, and controlling an igniter in the plasma ignition B2 layer at the same position as the fourth igniter to start the arc after a seventh delay time.
It should be noted that the first time is less than the second time, the second time is less than the third time, the third time is less than the fourth time, the fourth time is less than the fifth time, the fifth time is less than the sixth time, the sixth time is less than the seventh time, and the first to seventh times are in an arithmetic progression. That is, the plurality of plasma igniters in the plasma ignition system are sequentially controlled at regular intervals to perform arc starting operation. For example, the first time is 10 seconds, the second time is 20 seconds, the third time is 30 seconds, the fourth time is 40 seconds, the fifth time is 50 seconds, the sixth time is 60 seconds, and the seventh time is 70 seconds.
And 105, responding to the condition that the plasma ignition energy meets the preset plasma ignition capacity, and sequentially adjusting the baffle opening of the target layer in the secondary air baffles.
As an example, the opening degree of the secondary air baffle AB2 layer can be sequentially controlled to be 60%, the opening degree of the secondary air baffle BI layer can be controlled to be 40%, the opening degree of the secondary air baffle BC1 layer can be controlled to be 40%, and the opening degree of the secondary air baffle BO layer can be controlled to be 20%.
And 106, responding to the condition that the baffle opening degree of the target layer in the secondary air baffles meets the corresponding condition, and determining that the plasma sequential control is started to finish the starting of the plasma ignition system.
And detecting the baffle opening of the target layer in the plurality of secondary air baffles, and determining that the plasma sequential control is finished when the baffle opening of the target layer in the plurality of secondary air baffles meets the corresponding condition, so that the plasma ignition system can be started.
According to the self-starting method of the plasma ignition system based on the coal-fired unit, each step of manual checking, confirmation and starting of operators is not needed, the self-starting plasma ignition system is achieved, the automation level of the plasma ignition technology can be improved, the operation steps of the operators are simplified, and the situation of plasma ignition failure caused by complex ignition steps is reduced.
Fig. 3 is a schematic flow chart of another self-starting method of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application. As shown in fig. 3, the self-starting method of the plasma ignition system based on the coal-fired unit according to the embodiment of the present application may include the following steps:
And 303, responding to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state, and starting a second step command of plasma sequential control. Wherein the plasma sequence control second step command is used to instruct the coal pulverizer B outlet #1, 2, 3, and 4 pneumatic quick closing valves to open.
The coal mill B sealing air door electric valve is in a fully open state, for example, the coal mill B sealing air door electric valve is detected to have the opening degree meeting a preset value, and the coal mill B sealing air door electric valve is determined to be in the fully open state.
And 304, responding to the full-open state of the pneumatic quick-closing valves of the outlets #1, 2, 3 and 4 of the coal mill B, and starting a third step command of plasma sequential control. And the third step of the plasma sequential control instruction is used for indicating and controlling the plurality of plasma igniters to start the arc in sequence.
As an example, in the plasma ignition system shown in fig. 2, four igniters are included in the plasma ignition B1 layer and four igniters are included in the plasma ignition B2 layer. When the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state, eight plasma igniters in a plasma ignition layer B1 and a plasma ignition layer B2 are controlled to sequentially start arcs. For example, first, the first igniter (a008) in plasma ignition B1 layer is controlled to start arc, and after a delay of 10 seconds, the igniter (a013) in the same position as the first igniter (a008) in plasma ignition B2 layer is controlled to start arc, and after a delay of 20 seconds, the second igniter (a009) in plasma ignition B1 layer is controlled to start arc, and after a delay of 30 seconds, the igniter (a014) in the same position as the second igniter (a009) in plasma ignition B2 layer is controlled to start arc, and after a delay of 40 seconds, the third igniter (a010) in plasma ignition B1 layer is controlled to start arc, and after a delay of 50 seconds, the igniter (a015) in the same position as the third igniter (a010) in plasma ignition B2 layer is controlled to start arc, and after a delay of 60 seconds, the fourth igniter (a011) in plasma ignition B1 layer is controlled to start arc, and after a delay of 70 seconds, the igniter is controlled to start arc, and after a delay of 60 seconds, the igniter (a delay of 70 seconds), the igniter is controlled to start arc at the igniter (a position) in the same position as the igniter (a011) in the plasma ignition B64 a fourth igniter in plasma ignition B1 layer (A016) And starting the arc. That is, in this example, the plurality of plasma igniters are sequentially controlled to perform the arc starting operation every 10 seconds.
And 305, responding to the condition that the plasma ignition energy meets the preset plasma ignition capability, and starting a plasma sequential control 4-step instruction. The 4 th step of the plasma sequential control is used for indicating that the opening degree of the AB2 layer of the secondary air baffle is controlled to be adjusted to 60%, then the opening degree of the BI layer of the secondary air baffle is controlled to be adjusted to 40%, then the opening degree of the BC1 layer of the secondary air baffle is controlled to be adjusted to 40%, and then the opening degree of the BO layer of the secondary air baffle is controlled to be adjusted to 20%.
And step 306, responding to the condition that the baffle opening degree of the target layer in the plurality of secondary air baffles meets the corresponding condition, and determining that the plasma sequential control is started to finish the starting of the plasma ignition system.
According to the self-starting method of the plasma ignition system based on the coal-fired unit, each step does not need to be manually checked, confirmed and started by operators, the sequential control instruction is sequentially started based on the starting requirement and the equipment state of the plasma sequential control, and the sequential control step is automatically started, so that the self-starting plasma ignition system is realized, the automation level of the plasma ignition technology can be further improved, the operation steps of the operators are simplified, and the condition of plasma ignition failure caused by complex ignition steps is reduced.
Fig. 4 is a structural block diagram of a self-starting device of a plasma ignition system based on a coal-fired unit according to an embodiment of the present application. As shown in fig. 4, the self-starting device of the plasma ignition system based on the coal-fired unit may include: a detection module 401, a first activation module 402, a second activation module 403, a third activation module 404, a fourth activation module 405, and a fifth activation module 406.
The detection module 401 detects whether a start requirement of the plasma sequential control is met in response to a trigger operation for starting the plasma sequential control.
A first starting module 402, configured to start a first step of plasma sequential control instruction in response to successfully starting the plasma sequential control and checking that a plasma sequential control start permission condition satisfies a preset condition. And the first step of plasma sequential control instruction is used for indicating the full opening of an electric valve of a sealing air door of a coal mill B.
In some embodiments of the present application, checking that the plasma compliance start-up allowing condition satisfies a preset condition includes: checking whether a plasma ignition mode button is put in; checking the air pressure of a main pipe at the outlet of the plasma carrier fan, the running state of a plasma cooling water pump and the pressure of the main pipe at the outlet of the plasma cooling water; responding to the fact that the plasma ignition mode button is turned on, the air pressure of the plasma carrier fan outlet main pipe meets a preset main pipe air pressure target value, the running state of the plasma carrier fan is in operation, the pressure of the plasma cooling water outlet main pipe meets the preset main pipe pressure target value, and the running state of the plasma cooling water pump is in operation, and determining that the plasma sequential control starting permission condition meets the preset condition.
And a second starting module 403, configured to control the coal mill B outlet pneumatic quick-closing valve to open in response to the coal mill B sealing air door electric valve being in a fully-opened state.
In some embodiments of the present application, the second starting module 403 is specifically configured to: and starting a second step command of plasma sequential control, wherein the second step command of plasma sequential control is used for indicating the opening of the pneumatic quick-closing valves of the outlets #1, 2, 3 and 4 of the coal mill B.
And the third starting module 404 is configured to control the plurality of plasma igniters to sequentially start an arc in response to that the pneumatic quick-closing valve at the outlet of the coal pulverizer B is in a fully-open state.
In some embodiments of the present application, the third starting module 404 is specifically configured to: starting a third step command of plasma sequential control; wherein the third step of the plasma sequential control is used for instructing to first control a first igniter in a plasma ignition layer B1 to start arc, and after delaying a first time, to control an igniter in a plasma ignition layer B2 at the same position as the first igniter to start arc, and after delaying a second time, to control a second igniter in a plasma ignition layer B1 to start arc, and after delaying a third time, to control an igniter in a plasma ignition layer B2 at the same position as the second igniter to start arc, and after delaying a fourth time, to control a third igniter in a plasma ignition layer B1 to start arc, and after delaying a fifth time, to control an igniter in a plasma ignition layer B2 at the same position as the third igniter to start arc, and after delaying a sixth time, to control a fourth igniter in a plasma ignition layer B1 to start arc, and controlling an igniter in the plasma ignition B2 layer at the same position as the fourth igniter to start the arc after a seventh delay time.
The first time is less than the second time, the second time is less than the third time, the third time is less than the fourth time, the fourth time is less than the fifth time, the fifth time is less than the sixth time, the sixth time is less than the seventh time, and the first to seventh times are in an arithmetic progression.
And a fourth starting module 405, configured to adjust the baffle opening of the target layer in the multiple secondary air baffles in sequence in response to that the plasma ignition energy meets a preset plasma ignition capability condition.
In some embodiments of the present application, the fourth starting module 405 is specifically configured to: starting a plasma sequential control step 4 instruction; and the 4 th step of plasma sequential control instruction is used for indicating that the opening of the AB2 layer of the secondary air baffle is controlled to be adjusted to 60%, then the opening of the BI layer of the secondary air baffle is controlled to be adjusted to 40%, then the opening of the BC1 layer of the secondary air baffle is controlled to be adjusted to 40%, and then the opening of the BO layer of the secondary air baffle is controlled to be adjusted to 20%.
A fifth starting module 406, configured to determine that the starting of the plasma sequential control is finished in response to that a baffle opening of a target layer of the multiple secondary air baffles satisfies a corresponding condition, so as to complete starting of the plasma ignition system.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
According to the self-starting device of the plasma ignition system based on the coal-fired unit, each step of manual checking, confirmation and starting of operators is not needed, the self-starting plasma ignition system is achieved, the automation level of the plasma ignition technology can be improved, the operation steps of the operators are simplified, and the situation of plasma ignition failure caused by complex ignition steps is reduced.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. 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.
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 application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing steps of a custom logic function or process, and alternate implementations are included within the scope of the preferred embodiment of the present application in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (12)
1. A self-starting method of a plasma ignition system based on a coal-fired unit is characterized by comprising the following steps:
responding to a trigger operation for starting the plasma sequential control, and detecting whether the starting requirement of the plasma sequential control is met;
starting a first step instruction of plasma sequential control in response to successfully starting the plasma sequential control and checking that a plasma sequential control starting permission condition meets a preset condition; the first step of plasma sequential control instruction is used for indicating the full opening of an electric valve of a sealing air door of a coal mill B;
responding to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state, and controlling the pneumatic quick-closing valve of the outlet of the coal mill B to be opened;
responding to the fact that the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state, and controlling a plurality of plasma igniters to sequentially start arcs;
responding to the condition that the plasma ignition energy meets the preset plasma ignition capacity, and sequentially adjusting the baffle opening of a target layer in the plurality of secondary air baffles;
and determining that the plasma sequential control is started to finish the starting of the plasma ignition system in response to the fact that the baffle opening of the target layer in the plurality of secondary air baffles meets the corresponding condition.
2. The method of claim 1, wherein the checking that the plasma compliance start-up enabling condition satisfies a preset condition comprises:
checking whether a plasma ignition mode button is put in;
checking the air pressure of a main pipe at the outlet of the plasma carrier fan, the running state of a plasma cooling water pump and the pressure of the main pipe at the outlet of the plasma cooling water;
responding to the plasma ignition mode button is already put into use, the air pressure of the outlet main pipe of the plasma carrier fan meets a preset main pipe air pressure target value, the running state of the plasma carrier fan is in operation, the pressure of the outlet main pipe of the plasma cooling water meets the preset main pipe pressure target value, and the running state of the plasma cooling water pump is in operation, and determining that the plasma sequential control starting permission condition meets the preset condition.
3. The method of claim 1, wherein controlling the coal pulverizer B outlet pneumatic quick-closing valve to open comprises:
and starting a second step command of plasma sequential control, wherein the second step command of plasma sequential control is used for indicating the opening of the pneumatic quick-closing valves of the outlets #1, 2, 3 and 4 of the coal mill B.
4. The method of claim 1, wherein said controlling a plurality of plasma igniters to perform arc initiation in sequence comprises:
starting a third step command of plasma sequential control;
wherein the third step of the plasma sequential control is used for instructing to first control a first igniter in a plasma ignition layer B1 to start arc, and after delaying a first time, to control an igniter in a plasma ignition layer B2 at the same position as the first igniter to start arc, and after delaying a second time, to control a second igniter in a plasma ignition layer B1 to start arc, and after delaying a third time, to control an igniter in a plasma ignition layer B2 at the same position as the second igniter to start arc, and after delaying a fourth time, to control a third igniter in a plasma ignition layer B1 to start arc, and after delaying a fifth time, to control an igniter in a plasma ignition layer B2 at the same position as the third igniter to start arc, and after delaying a sixth time, to control a fourth igniter in a plasma ignition layer B1 to start arc, and controlling an igniter in the plasma ignition B2 layer at the same position as the fourth igniter to start the arc after a seventh delay time.
5. The method of claim 4, wherein the first time is less than the second time, the second time is less than the third time, the third time is less than the fourth time, the fourth time is less than the fifth time, the fifth time is less than the sixth time, the sixth time is less than the seventh time, and the first through seventh times are in an arithmetic progression.
6. The method of any one of claims 1 to 5, wherein said sequentially adjusting the baffle opening of a target layer of the plurality of overfire air baffles comprises:
starting a plasma sequential control step 4 instruction;
and the 4 th step of plasma sequential control instruction is used for indicating that the opening of the AB2 layer of the secondary air baffle is controlled to be adjusted to 60%, then the opening of the BI layer of the secondary air baffle is controlled to be adjusted to 40%, then the opening of the BC1 layer of the secondary air baffle is controlled to be adjusted to 40%, and then the opening of the BO layer of the secondary air baffle is controlled to be adjusted to 20%.
7. A plasma ignition system self-starting device based on coal-fired unit, characterized in that includes:
the detection module responds to the trigger operation for starting the plasma sequential control and detects whether the starting requirement of the plasma sequential control is met;
the first starting module is used for responding to the condition that the plasma sequential control is successfully started and the plasma sequential control starting permission condition is checked to meet the preset condition, and starting a first step instruction of the plasma sequential control; the first step of plasma sequential control instruction is used for indicating the full opening of an electric valve of a sealing air door of a coal mill B;
the second starting module is used for responding to the situation that the electric valve of the sealing air door of the coal mill B is in a full-open state, and controlling the pneumatic quick-closing valve of the outlet of the coal mill B to be opened;
the third starting module is used for responding to the situation that the pneumatic quick-closing valve at the outlet of the coal mill B is in a full-open state, and controlling the plurality of plasma igniters to sequentially start arcs;
the fourth starting module is used for responding to the condition that the plasma ignition energy meets the preset plasma ignition capacity and sequentially adjusting the baffle opening of the target layer in the plurality of secondary air baffles;
and the fifth starting module is used for responding to the condition that the baffle opening degree of a target layer in the secondary air baffles meets the corresponding condition, and determining that the plasma sequential control is started to finish the starting of the plasma ignition system.
8. The apparatus of claim 7, wherein the checking that the plasma compliance start-up allowing condition satisfies a preset condition comprises:
checking whether a plasma ignition mode button is put in;
checking the air pressure of a main pipe at the outlet of the plasma carrier fan, the running state of a plasma cooling water pump and the pressure of the main pipe at the outlet of the plasma cooling water;
responding to the fact that the plasma ignition mode button is turned on, the air pressure of the plasma carrier fan outlet main pipe meets a preset main pipe air pressure target value, the running state of the plasma carrier fan is in operation, the pressure of the plasma cooling water outlet main pipe meets the preset main pipe pressure target value, and the running state of the plasma cooling water pump is in operation, and determining that the plasma sequential control starting permission condition meets the preset condition.
9. The apparatus of claim 7, wherein the second starting module is specifically configured to:
and starting a second step command of plasma sequential control, wherein the second step command of plasma sequential control is used for indicating the opening of the pneumatic quick-closing valves of the outlets #1, 2, 3 and 4 of the coal mill B.
10. The apparatus according to claim 7, wherein the third starting module is specifically configured to:
starting a third step command of plasma sequential control;
wherein the third step of the plasma sequential control is used for instructing to first control a first igniter in a plasma ignition layer B1 to start arc, and after delaying a first time, to control an igniter in a plasma ignition layer B2 at the same position as the first igniter to start arc, and after delaying a second time, to control a second igniter in a plasma ignition layer B1 to start arc, and after delaying a third time, to control an igniter in a plasma ignition layer B2 at the same position as the second igniter to start arc, and after delaying a fourth time, to control a third igniter in a plasma ignition layer B1 to start arc, and after delaying a fifth time, to control an igniter in a plasma ignition layer B2 at the same position as the third igniter to start arc, and after delaying a sixth time, to control a fourth igniter in a plasma ignition layer B1 to start arc, and controlling an igniter in the plasma ignition B2 layer at the same position as the fourth igniter to start the arc after a seventh delay time.
11. The apparatus of claim 10, wherein the first time is less than the second time, the second time is less than the third time, the third time is less than the fourth time, the fourth time is less than the fifth time, the fifth time is less than the sixth time, the sixth time is less than the seventh time, and the first through seventh times are in an arithmetic progression.
12. The apparatus according to claims 7 to 11, wherein the fourth starting module is specifically configured to:
starting a plasma sequential control step 4 instruction;
and the 4 th step of plasma sequential control instruction is used for indicating that the opening of the AB2 layer of the secondary air baffle is controlled to be adjusted to 60%, then the opening of the BI layer of the secondary air baffle is controlled to be adjusted to 40%, then the opening of the BC1 layer of the secondary air baffle is controlled to be adjusted to 40%, and then the opening of the BO layer of the secondary air baffle is controlled to be adjusted to 20%.
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