CN206398749U - A kind of power plant boiler air and flue system - Google Patents
A kind of power plant boiler air and flue system Download PDFInfo
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- CN206398749U CN206398749U CN201720079593.4U CN201720079593U CN206398749U CN 206398749 U CN206398749 U CN 206398749U CN 201720079593 U CN201720079593 U CN 201720079593U CN 206398749 U CN206398749 U CN 206398749U
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- 235000019504 cigarettes Nutrition 0.000 claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 8
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 7
- 239000003546 flue gas Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 6
- 239000010687 lubricating oil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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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 utility model provides a kind of power plant boiler air and flue system, and the system includes：First and second air preheater, first and second pressure fan, first and second air-introduced machine, pressure fan outlet main pipe communicating door and a plurality of pipeline；Pressure fan is connected by pipeline with air preheater, and inlet guide vane is provided with air blower inlet, in its outlet provided with outlet electrically operated gate；Air preheater is connected by two-way pipeline with boiler furnace, and a pipeline exports electrically operated gate provided with air preheater wherein, and air preheater entrance electrically operated gate is provided with another pipeline；Air-introduced machine is arranged on air preheater and led on the pipeline of cigarette tower, and entrance and outlet electrically operated gate are respectively equipped with the two ends of air-introduced machine, air-introduced machine inlet guide vane is additionally provided with its porch；The outlet main pipe of first pressure fan and the outlet main pipe of the second pressure fan export main pipe communicating door by pressure fan and connected.
Description
Technical field
The utility model is related to thermal power generating technology field, more particularly to a kind of power plant boiler air and flue system.
Background technology
Need to ensure the efficiency of combustion that enough air inflows just can guarantee that boiler, existing boiler in the boiler of thermal power plant
In it is mostly be, to the direct setting admission line of boiler, extraneous air to be imported into combustion chamber, but be due to outside air and burner hearth temperature
There is larger temperature difference in degree, import outside air and regret reducing furnace temperature, so that efficiency of combustion is reduced, if increase is individually empty
Gas heater, can increase operating cost again.Also, existing thermal power plant is under boiler air and flue system full cut-off state, it is impossible to real
The automatic start of existing boiler air and flue system, also can not realize the automatic of boiler air and flue system under boiler wind and smoke system running state
Stop, and when boiler wind and smoke startup procedure is run to a certain step, if the step sequence condition is unsatisfactory for, it is impossible to continue to start
The operation of program.The operation of i.e. existing boiler air and flue system is required to human intervention with stopping, this considerably increases workload and
Human cost, and if can not start or stop in time boiler air and flue system, unit may be influenceed normally to run.
Utility model content
In order to solve the above technical problems, the utility model embodiment provides a kind of power plant boiler air and flue system, it is described
Power plant boiler air and flue system includes：First air preheater, the second air preheater, the first pressure fan, the second pressure fan,
One air-introduced machine, the second air-introduced machine, pressure fan outlet main pipe communicating door and a plurality of pipeline；
First pressure fan is connected by pipeline with first air preheater, is set in first air blower inlet
There is air blower inlet stator, electrically operated gate is exported provided with pressure fan in its outlet；First air preheater passes through two-way pipeline
It is connected with boiler furnace, a pipeline exports electrically operated gate provided with air preheater wherein, air preheater is provided with another pipeline
Entrance electrically operated gate；First air-introduced machine is arranged on first air preheater and led on the pipeline of cigarette tower, described first
The two ends of air-introduced machine are respectively equipped with entrance electrically operated gate and outlet electrically operated gate, and air inducing is additionally provided with the porch of first air-introduced machine
Machine inlet guide vane；
Second pressure fan is connected by pipeline with second air preheater, is set in second air blower inlet
There is air blower inlet stator, electrically operated gate is exported provided with pressure fan in its outlet；Second air preheater passes through two-way pipeline
It is connected with boiler furnace, a pipeline exports electrically operated gate provided with air preheater wherein, air preheater is provided with another pipeline
Entrance electrically operated gate；Second air-introduced machine is arranged on second air preheater and led on the pipeline of cigarette tower, described second
The two ends of air-introduced machine are respectively equipped with entrance electrically operated gate and outlet electrically operated gate, and air inducing is additionally provided with the porch of second air-introduced machine
Machine inlet guide vane；
The outlet main pipe of the outlet main pipe of first pressure fan and second pressure fan is exported by the pressure fan
Main pipe communicating door is connected.
The beneficial effect of the utility model embodiment is：The power plant boiler wind and smoke system that the utility model embodiment is provided
System can realize the automatic start of boiler air and flue system under power plant boiler air and flue system full cut-off state；In power plant boiler
Under air and flue system running status, being automatically stopped for boiler air and flue system is realized；And take into account artificial judgement, it is possible to achieve thermal power plant
The leapfrog operation of boiler wind and smoke system program control logic, when the service condition of a certain step of programed logic causes to walk for satisfaction
When sequence can not be carried out, artificially Rule of judgment whether can ignore and operate leapfrog to act, continue programed logic
Operation is finished until starting.Also, the power plant boiler air and flue system provided using the utility model embodiment, can give boiler
One trouble-free burning, the secondary wind field of stable operation are provided.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the utility model embodiment power plant boiler air and flue system；
Fig. 2 walks sequence schematic diagram for the startup of the utility model embodiment power plant boiler air and flue system；
Fig. 3 walks sequence schematic diagram for the stopping of the utility model embodiment power plant boiler air and flue system.
Drawing reference numeral
1. the pressure fan of the first air blower inlet stator 2. first
3. the first pressure fan exports the air blower inlet stator of electrically operated gate 4. second
5. the pressure fan of the first pressure fan 6. first exports electrically operated gate
7. the air-introduced machine inlet guide vane of the first air-introduced machine entrance electrically operated gate 8. first
9. the air-introduced machine of the first air-introduced machine 10. first exports electrically operated gate
11. the air-introduced machine inlet guide vane of the second air-introduced machine entrance electrically operated gate 12. second
13. the air-introduced machine of the second air-introduced machine 14. second exports electrically operated gate
15. the first air preheater exports the air preheater entrance electrically operated gate of electrically operated gate 16. first
17. the air preheater of the second air preheater entrance electrically operated gate 18. second exports electrically operated gate
19. the air preheater of pressure fan outlet main pipe communicating door 20. first
21. the muffler of the second air preheater 22. first
23. the second muffler
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
As shown in figure 1, the utility model embodiment provides a kind of power plant boiler air and flue system, the system mainly includes
First air preheater 20, the second air preheater 21, the first pressure fan 2, the second pressure fan 5, the first air-introduced machine 9, second are drawn
Blower fan 13, pressure fan outlet main pipe communicating door 19 and a plurality of pipeline.
First pressure fan 2 is connected by pipeline with the first air preheater 20, and air-supply is provided with the entrance of the first pressure fan 2
Machine inlet guide vane 1, electrically operated gate 3 is exported in its outlet provided with pressure fan.First air preheater 20 passes through two-way pipeline and boiler
Burner hearth is connected, and a pipeline exports electrically operated gate 15 provided with air preheater wherein, and air preheater entrance is provided with another pipeline
Electrically operated gate 16.First air-introduced machine 9 is arranged on the first air preheater 20 and led on the pipeline of cigarette tower, the two of the first air-introduced machine 9
End is respectively equipped with entrance electrically operated gate 7 and outlet electrically operated gate 10, and is additionally provided with air-introduced machine entrance in the porch of the first air-introduced machine 9
Stator 8.
Similar, the second pressure fan 5 is connected by pipeline with the second air preheater 21, in the entrance of the second pressure fan 5
Provided with air blower inlet stator 4, electrically operated gate 6 is exported provided with pressure fan in its outlet.Second air preheater 21 passes through two-way pipe
Road is connected with boiler furnace, and a pipeline exports electrically operated gate 18 provided with air preheater wherein, provided with sky on another pipeline
Pre- device entrance electrically operated gate 17.Second air-introduced machine 13 is arranged on the second air preheater 2 and led on the pipeline of cigarette tower, in the second air inducing
The two ends of machine 13 are respectively equipped with entrance electrically operated gate 11 and outlet electrically operated gate 14, and are additionally provided with the porch of the second air-introduced machine 13
Air-introduced machine inlet guide vane 12.
The outlet main pipe of the outlet main pipe of first pressure fan 2 and the second pressure fan 5 exports main pipe communicating door by pressure fan
19 connections.
As shown in figure 1, be additionally provided with the utility model embodiment power plant boiler air and flue system other necessary pipelines,
Valve and related thermal technology's measuring point etc..Above-mentioned measuring point may, for example, be pressure-measuring-pointTemperature pointAnd flow measuring pointDeng measuring point.
In the utility model embodiment, pressure fan is the air needed for burner hearth fuel combustion is provided；Air-introduced machine will
High-temperature flue gas produced by stove chamber inner combustion suctions out burner hearth and arranged to air, while maintaining combustion chamber draft burning.Air preheater is transported
It is rotation during row, the air needed for burning is heated using the heat of flue gas.Outside air is sent into via two pressure fan, warp
Enter secondary air box after crossing air preheater heating, burner is distributed to by secondary air box combustion-supporting.The high-temperature flue gas warp produced after burning
Reclaimed by air preheater after heat, suctioned out by air-introduced machine and enter air.The thermal power plant provided using the utility model embodiment
Boiler air and flue system, can provide a trouble-free burning, the secondary wind field of stable operation to boiler.
In one embodiment, outside air is incorporated into the first air preheater 20 through the first pressure fan 2, heated laggard
Enter boiler furnace, or be incorporated into through the second pressure fan 5 in the second air preheater 21, it is heated after enter boiler furnace.The
One pressure fan 2 and the second pressure fan 5 can work simultaneously, can also be standby each other, be determined on a case-by-case basis, the utility model is simultaneously
Do not limit.
In one embodiment, the high-temperature flue gas produced after Boiler Furnace chamber inner combustion reclaims heat through the first air preheater 20
Afterwards, extracted out, or after the second air preheater 21 recovery heat, extracted out by the second air-introduced machine 13 by the first air-introduced machine 9.First
The air-introduced machine 13 of air-introduced machine 9 and second can work simultaneously, can also be standby each other, be determined on a case-by-case basis, the utility model is simultaneously
Do not limit.
In one embodiment, above-mentioned power plant boiler air and flue system also includes the first muffler 22 and the second muffler 23,
First muffler 22 is arranged at the inlet guide vane 1 of the first pressure fan 2, and the second muffler 23 is arranged on entering for the second pressure fan 5
At mouth stator 4, to mitigate air suction and noise.
In one embodiment, above-mentioned power plant boiler air and flue system also includes：Boiler wind and smoke system program control logic is pressed
Button A1, air inducing machine negative pressure automatic button A2 and air-supply fan delivery automatic button A3.Above-mentioned button can be arranged on distributed AC servo system
On the control panel of system.
Fig. 2 walks program flow diagram for the startup of the utility model embodiment power plant boiler air and flue system, as shown in Fig. 2 should
Start step sequence to mainly include the following steps that：
Step S101, judge whether 1. the first air preheater entrance electrically operated gate 16 and outlet electrically operated gate 15, the second air
2. and the first air-introduced machine entrance electrically operated gate 7 and outlet electrically operated gate pre-heater inlet electrically operated gate 17 and outlet electrically operated gate 18 have been closed,
10th, the second air-introduced machine entrance electrically operated gate 11 and outlet electrically operated gate 14 closed, 3. and the first pressure fan outlet electrically operated gate 3 and second
5. and the first air-introduced machine inlet guide vane 4. and pressure fan outlet main pipe communicating door 19 has been closed pressure fan outlet electrically operated gate 6 has been closed,
8 and second air-introduced machine inlet guide vane 12 closed, 6. and the first air blower inlet stator 1 and the second air blower inlet stator 4 are equal
Close.If having one to be unsatisfactory in above-mentioned six conditions, step S102 is carried out, the first air preheater entrance of closing is sent
Electrically operated gate 16 and outlet electrically operated gate 15, the second air preheater entrance electrically operated gate 17 and the instruction for exporting electrically operated gate 18, and close
First air-introduced machine entrance electrically operated gate 7 and outlet electrically operated gate 10, the second air-introduced machine entrance electrically operated gate 11 and the finger for exporting electrically operated gate 13
Order, and close the instruction that the first pressure fan outlet pressure fan of electrically operated gate 3 and second exports electrically operated gate 6, and the outlet of closing pressure fan
The instruction of main pipe communicating door 19, and the instruction of the first air-introduced machine inlet guide vane 8 and the second air-introduced machine inlet guide vane 12 is closed, and close
Close the instruction of the first air blower inlet stator 1 and the second air blower inlet stator 4.If above-mentioned six conditions are met simultaneously, enter
Row step S103.
Step S101-S102 purpose is a series of valves for closing boiler air and flue system, is starting trouble air and flue system
Prepare.
Step S103, judge whether that the first air preheater 20 and the second air preheater 21 start.If two skies
Air preheater have one it is not actuated or not actuated, then carry out step S104, send the first air preheater 20 of startup and the
The instruction of two air preheaters 21.If two air preheaters start, step S105 is carried out.
Step S105, the entrance electrically operated gate 16 for judging whether the first air preheater 20 and outlet electrically operated gate 15, second are empty
The entrance electrically operated gate 17 and outlet electrically operated gate 18 of air preheater 21 have been opened.If an electrically operated gate is not switched on, then walked
Rapid S106, sends the first air preheater entrance electrically operated gate of unlatching 16 and outlet electrically operated gate 15, the second air preheater entrance electricity
The instruction of dynamic door 17 and outlet electrically operated gate 18.If the first air preheater entrance electrically operated gate 16 and outlet electrically operated gate 15, second
Air preheater entrance electrically operated gate 17 and outlet electrically operated gate 18 have been opened, and carry out step S107.
Step S107, judge whether 1. the first air-introduced machine outlet electrically operated gate 10 opened, 2. and the second pressure fan outlet it is electronic
3. and pressure fan outlet main pipe communicating door 19 has been opened door 3 has been opened,.If above three condition has one to be unsatisfactory for, or multiple
Condition is unsatisfactory for, then carries out step S108, is sent and is opened the instruction that the first air-introduced machine exports electrically operated gate 10, and opens the second air-supply
Machine exports the instruction of electrically operated gate 3, and opens the instruction of pressure fan outlet main pipe communicating door 19.If above three condition is simultaneously full
Foot, carries out step S109.
Step S107-S108 purpose is to open a series of valves, is prepared to start the first air-introduced machine 9.
Step S109, judge whether that the first air-introduced machine 9 has been turned on.If the first air-introduced machine 9 is not actuated, step is carried out
S110, sends the instruction for starting the first air-introduced machine 9.If the first air-introduced machine 9 has been turned on, step S111 is carried out.
Step S111, judge whether that the first air-introduced machine entrance electrically operated gate 7 has been opened.If the first air-introduced machine entrance electrically operated gate 7
Do not open, carry out step S112, send the instruction for opening the first air-introduced machine entrance electrically operated gate 7.If the first air-introduced machine entrance is electronic
Door 7 has been opened, and carries out step S113.
Step S113, judge whether that the first pressure fan 2 has been turned on.If the first pressure fan 2 is not actuated, step is carried out
S114, sends the instruction for starting the first pressure fan 2.If the first pressure fan 3 has been turned on, step S115 is carried out.
Step S115, judge whether 1. the first pressure fan outlet electrically operated gate 3 opened, 2. and the second pressure fan outlet electrically operated gate
6 have closed.If above-mentioned two condition has one to be unsatisfactory for or be both unsatisfactory for, step S116 is carried out, unlatching first is sent
Pressure fan exports the instruction of electrically operated gate 3, and closes the instruction that the second pressure fan exports electrically operated gate 6.If above-mentioned two condition is same
When meet, carry out step S117.
Step S117, judge whether that the second pressure fan 5 has been turned on.If the second pressure fan 5 is not actuated, step is carried out
S118, sends the instruction for starting the second pressure fan 5.If the second pressure fan 5 has been turned on, step S119 is carried out.
Step S119, judge whether the second pressure fan outlet electrically operated gate 6 opened.If the second pressure fan exports electrically operated gate 6
Do not open, then carry out step S120, send and open the instruction that the second pressure fan exports electrically operated gate 6.If the second pressure fan outlet electricity
Dynamic door has been opened, and carries out step S121.
Step S121, judge whether the second air-introduced machine outlet electrically operated gate 14 opened.If the second air-introduced machine exports electrically operated gate
14 do not open, carry out step S122, send and open the instruction that the second air-introduced machine exports electrically operated gate 14.If the second air-introduced machine outlet electricity
Dynamic door 14 has been opened, and carries out step S123.
Step S123, judge whether that the second air-introduced machine 13 has been turned on.If the second air-introduced machine 13 is not actuated, step is carried out
S124, sends the instruction for starting the second air-introduced machine 13.If the second air-introduced machine 13 has been turned on, step S125 is carried out.
2. and pressure fan outlet main pipe contact step S125, judge whether that 1. the second air-introduced machine entrance electrically operated gate 11 has been opened,
Door 19 has been closed.If above-mentioned two condition has one to be unsatisfactory for or two conditions are all unsatisfactory for, step S126 is carried out, is sent out
The instruction of the second air-introduced machine entrance electrically operated gate 11 is opened, and closes the instruction of pressure fan outlet main pipe communicating door 19.If second draws
Fans entrance electrically operated gate 11 has been opened, and pressure fan outlet main pipe communicating door 19 has been closed, and carries out step S127.
Step S127, to judge whether that 1. the first air-introduced machine inlet guide vane 8 and the second air-introduced machine inlet guide vane 12 have been thrown negative
2. and the first air blower inlet stator 1 and the second air blower inlet stator 4 have thrown the automatic gear of air quantity automatic gear is pressed,.Such as
Fruit above-mentioned two condition has one to be unsatisfactory for or two conditions are all unsatisfactory for, then carries out step S128, send the first air-introduced machine
The air-introduced machine inlet guide vane 12 of inlet guide vane 8 and second throws the instruction of the automatic gear of negative pressure, and by the He of the first air blower inlet stator 1
Second air blower inlet stator 4 throws the instruction of the automatic gear of air quantity.
After input air-introduced machine inlet guide vane negative pressure is automatic, air-introduced machine inlet guide vane follows the change of load, automatically controls stove
Thorax negative pressure.After input air blower inlet stator air quantity is automatic, air blower inlet stator follows the change of load, automatically controls burner hearth
Air quantity.
In one embodiment, the enabled condition of startup step sequence is：1. air preheater lubricating oil system is normal；2. pressure fan
Lubricating oil system and air-introduced machine lubricating oil system are normal.That is, it is necessary to prejudge air preheater before step S101 is carried out
Whether lubricating oil system, pressure fan lubricating oil system and air-introduced machine lubricating oil system are normal, in above three lubricating oil system just
In the case of often trouble-free, just boiler air and flue system is allowed to start.
Fig. 3 walks program flow diagram for the stopping of the utility model embodiment power plant boiler air and flue system, as shown in figure 3, should
Stop step sequence to mainly include the following steps that：
Step S2101, judge whether that the first pressure fan 2 and the second pressure fan 5 have been run to minimum air quantity.If two
There is an off-duty in pressure fan to minimum air quantity or two equal off-duties of pressure fan to minimum air quantity, then carry out step S202,
Send the instruction for closing the first air blower inlet stator 1 and the second air blower inlet stator 4.If the first pressure fan 2 and second
Pressure fan 5 has been run to minimum air quantity, carries out step S203.
2. and the first air inducing step S203, judge whether that 1. the first pressure fan 2 and the second pressure fan 5 are out of service,
The air-introduced machine 13 of machine 9 and second is out of service.If above-mentioned blower fan have one it is not out of service, or multiple blower fans do not stop
Operation, then carry out step S204, send the instruction of the pressure fan 5 of the first pressure fan 2 and second out of service, and out of service first
The instruction of the air-introduced machine 13 of air-introduced machine 9 and second.If two pressure fan and two air-introduced machines are out of service, step is carried out
S205。
Step S205, judge whether that 1. the first air blower inlet stator 1 and the second air blower inlet stator 4 have been closed, 2.
And first air-introduced machine inlet guide vane 8 and the second air-introduced machine inlet guide vane 12 closed.If having one in above-mentioned inlet guide vane not
Close, or multiple inlet guide vanes are not closed, then carry out step S206, send the air-supply of the first air blower inlet stator of closing 1 and second
The instruction of machine inlet guide vane 4, and close the instruction of the first air-introduced machine inlet guide vane 8 and the second air-introduced machine inlet guide vane 12.If
The inlet guide vane of aforementioned four blower fan has been closed, and carries out step S207.
Step S207, judge whether that the first air preheater 20 and the entrance flue gas temperature of the second air preheater 21 are less than
Preset temperature.If the entrance flue gas temperature of the first air preheater 20 and the second air preheater 21 is less than preset temperature, enter
Row step S208.
In one embodiment, above-mentioned preset temperature takes 120 °.
2. and first step S208, judge whether that 1. the first air preheater 20 and the second air preheater 21 have stopped,
Air preheater entrance electrically operated gate 16 and outlet electrically operated gate 15, the second air preheater entrance electrically operated gate 17 and outlet electrically operated gate 18
Close.If above-mentioned condition has one to be unsatisfactory for, or two conditions are all unsatisfactory for, then carry out step S209, send stopping
The instruction of first air preheater 20 and the second air preheater 21, and close the first air preheater entrance electrically operated gate 16 and go out
Mouth electrically operated gate 15, the second air preheater entrance electrically operated gate 17 and the instruction for exporting electrically operated gate 18.
In one embodiment, the enabled condition of stopping step sequence is：Boiler is out of service.That is, carry out step S201 it
It is preceding, it is necessary to whether prejudge boiler out of service, in the case where boiler is out of service, just allow to stop.
Start-up and shut-down control method shown in Fig. 2 and Fig. 3 is the journey of power plant boiler air and flue system in the utility model embodiment
Sequence control logic.Following functions can be realized using the programed logic：In power plant boiler air and flue system full cut-off state
Under, realize the automatic start of boiler air and flue system；Under power plant boiler air and flue system running status, boiler air and flue system is realized
Be automatically stopped；When power plant boiler air and flue system startup program is run to a certain step, condition is unsatisfactory for, if artificial judge to be somebody's turn to do
Condition be can ignore that, the operation that leapfrog action continues startup program can be carried out manually, be finished until boiler air and flue system starts.
Each step in start-up and shut-down control method shown in Fig. 2 and Fig. 3, first judges whether feedback receives, and continues if receiving
Next step；If do not received, instruction is sent, to be feedback receive is waited.When not receiving due feedback signal, programme-control is patrolled
The step can be rested on by collecting, and wait operative.Power plant operations staff can find the current operation step unreceived feedback signal of sequence,
Artificially judge whether unreceived feedback signal influences continuing executing with for program programed logic.If the feedback signal does not influence
Present procedure control logic proceeds, and operations staff can operate leapfrog action to continue the execution of programed logic；If
The feedback signal influences proceeding for present procedure control logic, then operations staff can not meet according to each found
Feedback signal, targetedly go investigation problem, until receive the feedback signal, continue executing with programed logic.
By the start-up and shut-down control method in Fig. 2 and Fig. 3, it can be realized under power plant boiler air and flue system full cut-off state
The automatic start of boiler air and flue system；Under power plant boiler air and flue system running status, the automatic of boiler air and flue system is realized
Stop.
Specific embodiment is applied in the utility model to be set forth principle of the present utility model and embodiment, with
The explanation of upper embodiment is only intended to help and understands structure of the present utility model and its core concept；Simultaneously for this area
Those skilled in the art, according to thought of the present utility model, will change in specific embodiments and applications, comprehensive
Upper described, this specification content should not be construed as to limitation of the present utility model.
Claims (5)
1. a kind of power plant boiler air and flue system, it is characterised in that the power plant boiler air and flue system includes：First air is pre-
Hot device, the second air preheater, the first pressure fan, the second pressure fan, the first air-introduced machine, the second air-introduced machine, pressure fan outlet are female
Tube contact door and a plurality of pipeline；
First pressure fan is connected by pipeline with first air preheater, is provided with and is sent in first air blower inlet
Fans entrance stator, electrically operated gate is exported in its outlet provided with pressure fan；First air preheater passes through two-way pipeline and pot
Stove burner hearth is connected, and a pipeline exports electrically operated gate provided with air preheater wherein, and air preheater entrance is provided with another pipeline
Electrically operated gate；First air-introduced machine is arranged on first air preheater and led on the pipeline of cigarette tower, in first air inducing
The two ends of machine are respectively equipped with entrance electrically operated gate and outlet electrically operated gate, are additionally provided with air-introduced machine in the porch of first air-introduced machine and enter
Mouth stator；
Second pressure fan is connected by pipeline with second air preheater, is provided with and is sent in second air blower inlet
Fans entrance stator, electrically operated gate is exported in its outlet provided with pressure fan；Second air preheater passes through two-way pipeline and pot
Stove burner hearth is connected, and a pipeline exports electrically operated gate provided with air preheater wherein, and air preheater entrance is provided with another pipeline
Electrically operated gate；Second air-introduced machine is arranged on second air preheater and led on the pipeline of cigarette tower, in second air inducing
The two ends of machine are respectively equipped with entrance electrically operated gate and outlet electrically operated gate, are additionally provided with air-introduced machine in the porch of second air-introduced machine and enter
Mouth stator；
The outlet main pipe of the outlet main pipe of first pressure fan and second pressure fan exports main pipe by the pressure fan
Communicating door is connected.
2. power plant boiler air and flue system according to claim 1, it is characterised in that outside air is through the described first air-supply
Machine is incorporated into first air preheater, it is heated after enter boiler furnace；And/or it introduces institute through second pressure fan
State the second air preheater, it is heated after enter boiler furnace.
3. power plant boiler air and flue system according to claim 1, it is characterised in that produced after Boiler Furnace chamber inner combustion
After high-temperature flue gas reclaims heat through first air preheater, extracted out by first air-introduced machine；And/or it is empty through described second
Air preheater is reclaimed after heat, is extracted out by second air-introduced machine.
4. power plant boiler air and flue system according to claim 1, it is characterised in that the power plant boiler air and flue system
Also include：First muffler and the second muffler, first muffler are arranged at the inlet guide vane of first pressure fan,
Second muffler is arranged at the inlet guide vane of second pressure fan.
5. power plant boiler air and flue system according to claim 1, it is characterised in that the power plant boiler air and flue system
Also include：Boiler wind and smoke system program control logic button, air inducing machine negative pressure automatic button and air-supply fan delivery automatic button.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765287A (en) * | 2017-01-22 | 2017-05-31 | 华北电力科学研究院有限责任公司 | A kind of power plant boiler air and flue system and its start-up and shut-down control method |
| CN108386865A (en) * | 2018-02-05 | 2018-08-10 | 长安益阳发电有限公司 | A kind of 300MW coal units reduce the control device and method of unburned carbon in flue dust |
| WO2023088279A1 (en) * | 2021-11-18 | 2023-05-25 | 西安热工研究院有限公司 | System and method for improving rb working condition of induced draft fan of two-boiler one-machine thermal power generating unit |
-
2017
- 2017-01-22 CN CN201720079593.4U patent/CN206398749U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106765287A (en) * | 2017-01-22 | 2017-05-31 | 华北电力科学研究院有限责任公司 | A kind of power plant boiler air and flue system and its start-up and shut-down control method |
| CN106765287B (en) * | 2017-01-22 | 2023-07-11 | 华北电力科学研究院有限责任公司 | Boiler smoke system of thermal power plant and start-stop control method thereof |
| CN108386865A (en) * | 2018-02-05 | 2018-08-10 | 长安益阳发电有限公司 | A kind of 300MW coal units reduce the control device and method of unburned carbon in flue dust |
| WO2023088279A1 (en) * | 2021-11-18 | 2023-05-25 | 西安热工研究院有限公司 | System and method for improving rb working condition of induced draft fan of two-boiler one-machine thermal power generating unit |
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