CN105222130A - Double Dipleg CFB Boiler First air control system - Google Patents
Double Dipleg CFB Boiler First air control system Download PDFInfo
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- CN105222130A CN105222130A CN201410262356.2A CN201410262356A CN105222130A CN 105222130 A CN105222130 A CN 105222130A CN 201410262356 A CN201410262356 A CN 201410262356A CN 105222130 A CN105222130 A CN 105222130A
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Abstract
The invention discloses a kind of large-scale Double Dipleg CFB Boiler First air control system, comprise: pressure parameter transmitter PT1, pressure parameter transmitter PT2, filter module M1, filter module M2, subtracter block M3, Dead band controller module M4, get and get greatly little module M5, setting value module M6, subtracter block M7, get large module M8, function of load generator module M9, PID controller module M10, multiplication module M11, definite value module M12, setting value module M13, subtracter block M14, get large module M15, function of load generator module M16, PID controller module M17.Bed can be reduced and press unbalanced situation.
Description
Technical field
The present invention relates to energy field, particularly relate to a kind of large-scale Double Dipleg CFB Boiler First air control system.
Background technology
CFBC is as the important representative of clean coal technology, the direct desulfurization in stove combustion process can be realized, simultaneously due to its low temperature sectional combustion, effectively can suppress the discharge of nitrogen oxide, thus save investment and the operation of desulphurization denitration equipment.
Along with national energy-saving reduces discharging deepening continuously of policy, large-size circulating fluidized bed unit progressively improves in the ratio of fired power generating unit.Dual-outrigger circulating fluidized bed unit First air control system is divided into primary air pressure control system and Primary air flow control system.On the basis controlling blast and air quantity, because boiler is the two cloth wind structure of pants shape, the control of left and right side bed of material differential pressure must be considered, prevent boiler side leg primary air flow in running from reducing suddenly, bed pressure increases suddenly, and opposite side supporting leg primary air flow increases suddenly, bed pressure sharply reduces, two side leg air quantity and bed pressure deviation sharply increase, to such an extent as to a side leg primary air flow drops to zero, and not energy fluidizing expected by bed.Therefore bed pressure is uneven constitutes great threat to unit safety stable operation, not only easily causes unit outage, and may cause boiler large-area coking.
Summary of the invention
The embodiment of the present invention provides a kind of dual-outrigger circulating fluidized bed unit First air automatic control system, can reduce bed and press unbalanced situation.
The embodiment of the present invention adopts following technical scheme:
A kind of Double Dipleg CFB Boiler First air control system, comprising:
Pressure parameter transmitter PT1, pressure parameter transmitter PT2, filter module M1, filter module M2, subtracter block M3, Dead band controller module M4, get and get greatly little module M5, setting value module M6, subtracter block M7, get large module M8, function of load generator module M9, PID controller module M10, multiplication module M11, definite value module M12, setting value module M13, subtracter block M14, get large module M15, function of load generator module M16, PID controller module M17;
The output of pressure parameter transmitter PT1 and the input i of filter module M1
1be connected, the output of pressure parameter transmitter PT2 and the input i of filter module M2
1be connected; The output O of filter module M1
1with the first input end i of subtracter block M3
1be connected, the output O of filter module M2
2with the second input i of subtracter block M3
2be connected, the output O of subtracter block M3
3with the input i of Dead band controller module M4
1be connected, the output O of Dead band controller module M4
4with get the input i getting greatly little module M5
1be connected;
Get the output O getting greatly little module M5
5with the second input i getting large module M8
2be connected, the output O of setting value module M6
6with the second input i of subtracter block M7
2be connected; The first input end i of subtracter block M7
1be connected with controllable register aperture, the output O of subtracter block M7
7with the first input end i getting large module M8
1be connected; Get the output O of large module M8
8be connected with the deviation end of PID controller module M10 as control deviation, the output O of function of load generator module M9
9be connected with the feedforward end of PID controller module M10 as feedforward; The output O of PID controller module M10
10be connected with left side First air controllable register;
Get the output O getting greatly little module M5
5with the first input end i of multiplication module M11
1be connected, the output O of definite value module M12
11with the second input i of multiplication module M11
2be connected, the output O of multiplication module M11
12with the second input i getting large module M15
2be connected, the output O of setting value module M13
13with the second input i of subtracter block M14
2be connected, the first input end i of subtracter block M14
1be connected with controllable register aperture; The output O of subtracter block M14
14with the first input end i getting large module M15
1be connected, get the output O of large module M15
15be connected with the deviation end of PID controller module M17 as control deviation, the output O of function of load generator module M16
16be connected with the feedforward end of PID controller module M17 as feedforward, the output O of PID controller module M17
17be connected with right side First air controllable register.
Based on technique scheme, balance the difference of left and right side bed of material differential pressure according to left and right bed pressure correcting controller, regulate left and right First air controllable register respectively, bed can be reduced and press unbalanced situation.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of large-scale Double Dipleg CFB Boiler First air control system that Fig. 1 provides for the embodiment of the present invention.
Detailed description of the invention
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly described, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of large-scale Double Dipleg CFB Boiler First air control system, comprising:
Pressure parameter transmitter PT1, pressure parameter transmitter PT2, filter module M1, filter module M2, subtracter block M3, Dead band controller module M4, get and get greatly little module M5, setting value module M6, subtracter block M7, get large module M8, function of load generator module M9, PID controller module M10, multiplication module M11, definite value module M12, setting value module M13, subtracter block M14, get large module M15, function of load generator module M16, PID controller module M17.
In Fig. 1, setting value module M6 is used for system parameter settings and storage; Get large module M8 and be provided with income port i
1, i
2, output port o
8if, i
1> i
2then o
8export i
1if, i
1< i
2then o
8export i
2; Get large module M15 and be provided with income port i
1, i
2, output port o
15if, i
1> i
2then o
15export i
1if, i
1< i
2then o
15export i
2; The calculating formula of filter module M1 and filter module M2 is 1/ (1+T
s), wherein T
s=5; Multiplication module M11 is provided with input port i
1, i
2, output port o
12, wherein o
12=-1 × i
1; Subtracter block M7 is provided with input port i
1, i
2, output port o
7, wherein, o
7=i
1-i
2; Subtracter block M14 is provided with input port i
1, i
2, output port o
14, wherein, o
14=i
1-i
2; Function of load generator module M9 is provided with input port i, output port o
9, wherein i=0, o
9=50, i=50, o
9=70, i=, 10, o
9=100, i=120, o
9=100; Function of load generator module M16 is provided with input port i, output port o
16, wherein i=0, o
16=50, i=50, o
16=70, i=, 10, o
16=100, i=120, o
16=100; Dead band controller module M4 is provided with input port i
1, output port o
4, wherein, | i
1| > 1.5, o
4=1.5, | i
1| < 1.5, o
4=i; Get and get greatly little module M5 and be provided with input port i
1, output port o
5, wherein, i
1> 10, o
5=10, i
1<-10, o
5=-10;-10 < i
1< 10, o
5=i.
Particularly, the output of pressure parameter transmitter PT1 and the input i of filter module M1
1be connected, the output of pressure parameter transmitter PT2 and the input i of filter module M2
1be connected; The output O of filter module M1
1with the first input end i of subtracter block M3
1be connected, the output O of filter module M2
2with the second input i of subtracter block M3
2be connected, the output O of subtracter block M3
3with the input i of Dead band controller module M4
1be connected, the output O of Dead band controller module M4
4with get the input i getting greatly little module M5
1be connected;
Get the output O getting greatly little module M5
5with the second input i getting large module M8
2be connected, the output O of setting value module M6
6with the second input i of subtracter block M7
2be connected; The first input end i of subtracter block M7
1be connected with controllable register aperture, the output O of subtracter block M7
7with the first input end i getting large module M8
1be connected; Get the output O of large module M8
8be connected with the deviation end of PID controller module M10 as control deviation, the output O of function of load generator module M9
9be connected with the feedforward end of PID controller module M10 as feedforward; The output O of PID controller module M10
10be connected with left side First air controllable register (or control unit);
Get the output O getting greatly little module M5
5with the first input end i of multiplication module M11
1be connected, the output O of definite value module M12
11with the second input i of multiplication module M11
2be connected, the output O of multiplication module M11
12with the second input i getting large module M15
2be connected, the output O of setting value module M13
13with the second input i of subtracter block M14
2be connected, the first input end i of subtracter block M14
1be connected with controllable register aperture; The output O of subtracter block M14
14with the first input end i getting large module M15
1be connected, get the output O of large module M15
15be connected with the deviation end of PID controller module M17 as control deviation, the output O of function of load generator module M16
16be connected with the feedforward end of PID controller module M17 as feedforward, the output O of PID controller module M17
17be connected with right side First air controllable register (or control unit).
The embodiment of the present invention, balances the difference of left and right side bed of material differential pressure, regulates left and right First air controllable register respectively, can reduce bed and press unbalanced situation according to left and right bed pressure correcting controller.Consider that lifting load is to the requirement of air quantity, adds primary air flow feedforward, is applied in left and right First air controllable register simultaneously, carrys out the requirement of load-responsive to air quantity in left and right First air controllable register adjuster simultaneously.The present invention can reduce the workload of operations staff, improves the security and stability of unit operation.
Those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (1)
1. a Double Dipleg CFB Boiler First air control system, is characterized in that, comprising:
Pressure parameter transmitter PT1, pressure parameter transmitter PT2, filter module M1, filter module M2, subtracter block M3, Dead band controller module M4, get and get greatly little module M5, setting value module M6, subtracter block M7, get large module M8, function of load generator module M9, PID controller module M10, multiplication module M11, definite value module M12, setting value module M13, subtracter block M14, get large module M15, function of load generator module M16, PID controller module M17;
The output of pressure parameter transmitter PT1 and the input i of filter module M1
1be connected, the output of pressure parameter transmitter PT2 and the input i of filter module M2
1be connected; The output O of filter module M1
1with the first input end i of subtracter block M3
1be connected, the output O of filter module M2
2with the second input i of subtracter block M3
2be connected, the output O of subtracter block M3
3with the input i of Dead band controller module M4
1be connected, the output O of Dead band controller module M4
4with get the input i getting greatly little module M5
1be connected;
Get the output O getting greatly little module M5
5with the second input i getting large module M8
2be connected, the output O of setting value module M6
6with the second input i of subtracter block M7
2be connected; The first input end i of subtracter block M7
1be connected with controllable register aperture, the output O of subtracter block M7
7with the first input end i getting large module M8
1be connected; Get the output O of large module M8
8be connected with the deviation end of PID controller module M10 as control deviation, the output O of function of load generator module M9
9be connected with the feedforward end of PID controller module M10 as feedforward; The output O of PID controller module M10
10be connected with left side First air controllable register;
Get the output O getting greatly little module M5
5with the first input end i of multiplication module M11
1be connected, the output O of definite value module M12
11with the second input i of multiplication module M11
2be connected, the output O of multiplication module M11
12with the second input i getting large module M15
2be connected, the output O of setting value module M13
13with the second input i of subtracter block M14
2be connected, the first input end i of subtracter block M14
1be connected with controllable register aperture; The output O of subtracter block M14
14with the first input end i getting large module M15
1be connected, get the output O of large module M15
15be connected with the deviation end of PID controller module M17 as control deviation, the output O of function of load generator module M16
16be connected with the feedforward end of PID controller module M17 as feedforward, the output O of PID controller module M17
17be connected with right side First air controllable register.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262356.2A CN105222130B (en) | 2014-06-12 | 2014-06-12 | Double Dipleg CFB Boiler First air control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410262356.2A CN105222130B (en) | 2014-06-12 | 2014-06-12 | Double Dipleg CFB Boiler First air control system |
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|---|---|
| CN105222130A true CN105222130A (en) | 2016-01-06 |
| CN105222130B CN105222130B (en) | 2017-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410262356.2A Active CN105222130B (en) | 2014-06-12 | 2014-06-12 | Double Dipleg CFB Boiler First air control system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856398A (en) * | 2021-01-04 | 2021-05-28 | 神华神东电力有限责任公司 | Primary air control device of double-bed circulating fluidized bed boiler |
| CN114216115A (en) * | 2021-12-04 | 2022-03-22 | 国网山西省电力公司电力科学研究院 | Primary frequency modulation automatic control system based on feedforward pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112856398A (en) * | 2021-01-04 | 2021-05-28 | 神华神东电力有限责任公司 | Primary air control device of double-bed circulating fluidized bed boiler |
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| CN114216115A (en) * | 2021-12-04 | 2022-03-22 | 国网山西省电力公司电力科学研究院 | Primary frequency modulation automatic control system based on feedforward pressure |
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| Publication number | Publication date |
|---|---|
| CN105222130B (en) | 2017-07-18 |
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