CN206377689U - A kind of boiler smoke oxygen content kinetic-control system - Google Patents
A kind of boiler smoke oxygen content kinetic-control system Download PDFInfo
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- CN206377689U CN206377689U CN201720017780.XU CN201720017780U CN206377689U CN 206377689 U CN206377689 U CN 206377689U CN 201720017780 U CN201720017780 U CN 201720017780U CN 206377689 U CN206377689 U CN 206377689U
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Abstract
The utility model discloses a kind of boiler smoke oxygen content kinetic-control system, move towards to include what is connected by pipeline successively according to flue gas：Burner, boiler body, energy-saving appliance, deduster, air-introduced machine and chimney, the air inlet of air blower is connected on pipeline for connecting energy-saving appliance and deduster by being in charge of, the air outlet of air blower is connected to burner by pipeline, the second automatic air-valve is installed for connecting being in charge of for air blower, Gas inlet tube is provided with below second automatic air-valve, first automatic air-valve is installed on Gas inlet tube, zirconia probe is installed on the connecting pipe of energy-saving appliance and deduster, the signal output part of zirconia probe is consecutively connected to oxygen analyzer, central controller, air damper controller and throttle opening actuator, throttle opening actuator is arranged on two automatic air-valves.The system can automatically adjust the intake and flue gas recirculation amount of air blower, reduce the generation of the harmful substances such as nitrogen oxides, can also reduce thermal loss, save energy consumption.
Description
Technical field
A kind of the utility model boiler plant technical field, and in particular to boiler smoke oxygen content kinetic-control system.
Background technology
Flue gas oxygen content refers to the content of the oxygen in the flue gas that is produced after fuel combustion.It is a weight of boiler operatiopn
Index is wanted, the generation of the harmful substances such as efficiency of combustion, thermal loss, electric energy loss, the nitrogen oxides of boiler is directly affected, because
This will try strictly to be controlled.
The mediumand smallscale industrial boilers of solid fuel are used for some, at present to the most direct controlling party of flue gas oxygen content
Formula is throttle opening by controlling blower fan or adjusts the rotating speed of blower fan to control air quantity to achieve the goal.If heat energy uses equipment
Use thermally labile, the load of boiler often fluctuate up and down it is larger, by the performance of equipment and limiting to for operative's technical ability, boiler
Air-fuel ratio be just difficult to control to be run in the ideal range.Air quantity is excessive, causes flue gas oxygen content too high, nitrogen oxidation
The therefore growing amount increase of the harmful substances such as thing, aggravates environmental pollution, meanwhile, excessive air can also take away partial heat and cause heat
Therefore loss of energy increase, air blower and air-introduced machine load increase, and also bring the waste of electric energy；Air quantity is less than normal, causes fuel
Burning is insufficient, and blast also can be reduced rapidly when air quantity is turned down, often also results in that solid fuel ignition is uneven and local accumulation,
Part, which is smouldered, burns out fire grate.
When boiler load is less than normal, with the reduction of fuel quantity, rotation speed of fan also will be reduced accordingly, and now blast is also drastically
Reduction, the uneven and local packing phenomenon of fuel combustion most easily occurs；If maintaining suitable blast to ensure the abundant of burning
Thoroughly, air quantity also accordingly increased oxygen amount increase so that the oxygen content ratio in flue gas is also significantly increased.It is how low negative in boiler
The mistake oxygen amount that flue gas has been better controled over during lotus is beneficial to fuel combustion and energy-conserving and environment-protective again, is that solid fuel uses Boiling Combustion side
The a great problem of formula burning.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of boiler smoke oxygen content kinetic-control system, this
Boiler smoke oxygen content kinetic-control system can detect that oxygen signal sends analysis of oxygen content in flue gas by zirconia probe
Instrument, oxygen analyzer exports corresponding electric signal to central controller according to the height of flue gas oxygen content, is sent out by central controller
Go out control instruction to air damper controller, air damper controller controls throttle opening actuator to control the keying angle of automatic air-valve to open again
It is big or turn down, so as to reach preferably running status of the regulation boiler smoke oxygen content in a reasonable set scope.
To realize such scheme, a kind of boiler smoke oxygen content kinetic-control system that the utility model is provided, according to cigarette
Make leave with rage to successively including by pipeline connection：Burner, boiler body, energy-saving appliance, deduster, air-introduced machine and chimney, are used for
The air inlet of air blower, the air outlet of the air blower are connected on the flue of connection energy-saving appliance and deduster by being in charge of
Burner is connected to by pipeline, described to be used to connect to be provided with the second automatic air-valve being in charge of for air blower, described second certainly
It is provided with below dynamic air-valve on Gas inlet tube, the Gas inlet tube and the first automatic air-valve is installed, the one of the first automatic air-valve
End is by Gas inlet tube and atmosphere, and the other end is connected by pipeline with air blower, positioned at the connection master of energy-saving appliance and deduster
Zirconia probe is installed, the signal output part of the zirconia probe is wired to oxygen analyzer, institute on pipeline
The signal output part for stating oxygen analyzer is wired to central controller, and the signal output part of the central controller leads to
Cross wire and be connected to air damper controller, the signal output part of the air damper controller is wired to throttle opening execution
Device, the throttle opening actuator is arranged on the first automatic air-valve and the second automatic air-valve.
In the above-mentioned technical solutions, the flue gas that burner combustion is produced sequentially passes through boiler body and energy-saving appliance carries out heat
It is special in order to preferably adjust the supply air quantity of air blower after recovery, then by deduster dedusting via air-introduced machine and chimney discharge
It is in charge of the air inlet for being connected to air blower by one on the pipeline for connecting energy-saving appliance and deduster, and is set on being in charge of
The second automatic air-valve is put, the second automatic air-valve rear end is provided with bifurcated pipe and drawn equipped with the first automatic air-valve by Gas inlet tube
Enter fresh air, and detect that oxygen signal sends oxygen analyzer, oxygen analyzer root in flue gas by zirconia probe
Corresponding electric signal is exported to central controller according to the height of flue gas oxygen content, and airdoor control is issued instructions to by central controller
Device, air damper controller controls the keying angle of throttle opening actuator the first automatic air-valve of control and the second automatic air-valve again, from
And the fresh air intake and flue gas recirculation air quantity of air blower can be controlled, preferably to control the oxygen supply in burner
Amount, so as to preferably control fuel combustion, reduces the generation of the harmful substances such as nitrogen oxides, while it also avoid due to excess
Fresh air band too much heat away causes heat-energy losses to increase, the excessively high phenomenon of energy consumption, and ensures that oxygen content is one in flue gas
The zone of reasonableness of individual setting.
It is preferred that, the burner is biomass fuel burner or the solid fuel burner of Boiling Combustion.
The beneficial effect of technical scheme described in the utility model is：This boiler smoke oxygen content kinetic-control system passes through
Oxygen signal sends oxygen analyzer in zirconia probe detection flue gas, and oxygen analyzer is defeated according to the height of flue gas oxygen content
Go out corresponding electric signal to central controller, air damper controller is issued instructions to by central controller, air damper controller is controlled again
Throttle opening actuator controls the keying angle of automatic air-valve, so as to control the intake and flue gas recirculation amount of air blower,
The oxygen-supplying amount in burner can be preferably controlled in recovered flue gas while partial heat energy, so that preferably control fuel combustion
Burn, reduce the generation of the harmful substance such as nitrogen oxides, heat is caused while it also avoid taking away partial heat due to excessive air
Loss of energy increase, the excessively high phenomenon of energy consumption, it is ensured that zone of reasonableness of the oxygen content in a setting in flue gas.
Brief description of the drawings
Fig. 1 is the connection diagram between each equipment in the utility model.
Fig. 2 be the utility model between oxygen analyzer, central controller, air damper controller, throttle opening actuator
Connection diagram.
In figure：1st, burner；2nd, boiler body；3rd, stove tail flue；4th, energy-saving appliance；5th, Gas inlet tube；6th, zirconia probe；7、
First automatic air-valve；8th, air blower；9th, the second automatic air-valve；10th, deduster；11st, air-introduced machine；12nd, chimney；21st, analysis of oxygen content
Instrument；22nd, central controller；23rd, air damper controller；24th, throttle opening actuator.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clear, complete description, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.The every other embodiment that this area ordinary person is obtained under the premise of creative work is not made, is belonged to
Protection domain of the present utility model.
Embodiment：A kind of boiler smoke oxygen content kinetic-control system.
Referring to figs. 1 to shown in Fig. 2, a kind of boiler smoke oxygen content kinetic-control system includes successively according to flue gas trend
Connected by pipeline：Burner 1, boiler body 2, energy-saving appliance 4, deduster 10, air-introduced machine 11 and chimney 12, the burner
1 is to be connected to air blower by being in charge of on biomass fuel burner, the flue for connecting energy-saving appliance 4 and deduster 10
8 air inlet, the air outlet of the air blower 8 is connected to burner 1 by pipeline, described to be used to connect being in charge of for air blower 8
On the second automatic air-valve 9 is installed, the lower section of the second automatic air-valve 9, which is provided with Gas inlet tube 5, the Gas inlet tube 5, installs
Have the first automatic air-valve 7, one end of the first automatic air-valve 7 by Gas inlet tube 5 and atmosphere, the other end by pipeline with
Air blower 8 is connected, and zirconia probe 6 is provided with the connection main pipeline of energy-saving appliance 4 and deduster 10, and the zirconium oxide is visited
First 6 signal output part is wired to oxygen analyzer 21, and the signal output part of the oxygen analyzer 21 is by leading
Line is connected to central controller 22, and the signal output part of the central controller 22 is wired to air damper controller 23,
The signal output part of the air damper controller 23 is wired to throttle opening actuator 24, the throttle opening actuator
24 are arranged on the first automatic air-valve 9 of automatic air-valve 7 and second.
Shown referring to Figures 1 and 2, the operation principle of this boiler smoke oxygen content kinetic-control system is：Biomass fuel
Or solid fuel burns in burner 1, is connected between boiler body 2 and energy-saving appliance 4 by stove tail flue 3, burner 1 fires
Burn the flue gas produced and sequentially pass through boiler body 2 and energy-saving appliance 4 and carry out after heat recovery, then by the dedusting of deduster 10 via drawing
Blower fan 11 and chimney 12 are discharged, and in order to preferably adjust the supply air quantity of air blower 8, spy is for connecting energy-saving appliance 4 and dedusting
It is in charge of the air inlet for being connected to air blower 8 on the pipeline of device 10 by one, and the second automatic air-valve 9 is set on being in charge of, the
The two automatic rear ends of air-valve 9 are provided with bifurcated pipe and introduce fresh air by Gas inlet tube 5 equipped with the first automatic air-valve 7, and lead to
Peroxidating zirconium probe 6 detects that oxygen signal sends oxygen analyzer 21 in flue gas, and oxygen analyzer 21 is according to flue gas oxygen content
Height export corresponding electric signal to central controller 22, air damper controller 23, wind are issued instructions to by central controller 22
Door controller 23 controls the keying angle of the first automatic air-valve 9 of automatic air-valve 7 and second of control of throttle opening actuator 24 again, from
And the fresh air intake and flue gas recirculation air quantity of air blower 8 can be controlled, preferably to control the oxygen supply in burner 1
Amount, so as to preferably control fuel combustion, reduces the generation of the harmful substances such as nitrogen oxides, while it also avoid due to excess
Fresh air band too much heat away causes heat-energy losses to increase, the excessively high phenomenon of energy consumption, and ensures that oxygen content is one in flue gas
The zone of reasonableness of individual setting.
It is described above be preferred embodiment of the present utility model, but the utility model should not be limited to the embodiment and
Accompanying drawing disclosure of that, so every do not depart from the lower equivalent or modification completed of spirit disclosed in the utility model, all falls
Enter the scope of the utility model protection.
Claims (2)
1. a kind of boiler smoke oxygen content kinetic-control system, moves towards to include what is connected by pipeline successively according to flue gas：Burning
Device (1), boiler body (2), energy-saving appliance (4), deduster (10), air-introduced machine (11) and chimney (12), it is characterised in that：For even
The air inlet of air blower (8), the air blower are connected on the flue for connecing energy-saving appliance (4) and deduster (10) by being in charge of
(8) air outlet is connected to burner (1) by pipeline, described to be provided with second certainly for connecting being in charge of for air blower (8)
It is provided with below dynamic air-valve (9), the second automatic air-valve (9) on Gas inlet tube (5), the Gas inlet tube (5) and is provided with first
Automatic air-valve (7), one end of the first automatic air-valve (7) by Gas inlet tube (5) and atmosphere, the other end by pipeline with
Air blower (8) is connected, and zirconia probe (6) is provided with the connection main pipeline of energy-saving appliance (4) and deduster (10), described
The signal output part of zirconia probe (6) is wired to oxygen analyzer (21), the letter of the oxygen analyzer (21)
Number output end is wired to central controller (22), and the signal output part of the central controller (22) is connected by wire
Air damper controller (23) is connected to, the signal output part of the air damper controller (23) is wired to throttle opening actuator
(24), the throttle opening actuator (24) is arranged on the first automatic air-valve (7) and the second automatic air-valve (9).
2. boiler smoke oxygen content kinetic-control system as claimed in claim 1, it is characterised in that：The burner (1) is
Biomass fuel combustion device or the solid fuel burner of Boiling Combustion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017780.XU CN206377689U (en) | 2017-01-06 | 2017-01-06 | A kind of boiler smoke oxygen content kinetic-control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720017780.XU CN206377689U (en) | 2017-01-06 | 2017-01-06 | A kind of boiler smoke oxygen content kinetic-control system |
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| CN206377689U true CN206377689U (en) | 2017-08-04 |
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| CN201720017780.XU Active CN206377689U (en) | 2017-01-06 | 2017-01-06 | A kind of boiler smoke oxygen content kinetic-control system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084324A (en) * | 2018-07-19 | 2018-12-25 | 北京德普新源科技发展有限公司 | The burning air quantity control system and control method of biomass boiler |
| CN109489065A (en) * | 2018-10-15 | 2019-03-19 | 杭州德联科技股份有限公司 | Based on the optimized control method of combustion under the conditions of discharged nitrous oxides Index Constraints |
| CN109990269A (en) * | 2019-04-23 | 2019-07-09 | 西安热工研究院有限公司 | A kind of W flame boiler allocation of the amount of air regulating system |
| CN110145759A (en) * | 2019-05-08 | 2019-08-20 | 浙江三维橡胶制品股份有限公司 | Oxygen content control system during low-load of boiler |
| CN111174197A (en) * | 2020-01-14 | 2020-05-19 | 湖南文理学院 | Method for detecting and controlling oxygen content of boiler flue gas of power plant |
-
2017
- 2017-01-06 CN CN201720017780.XU patent/CN206377689U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109084324A (en) * | 2018-07-19 | 2018-12-25 | 北京德普新源科技发展有限公司 | The burning air quantity control system and control method of biomass boiler |
| CN109084324B (en) * | 2018-07-19 | 2019-09-27 | 北京德普新源科技发展有限公司 | The burning air quantity control system and control method of biomass boiler |
| CN109489065A (en) * | 2018-10-15 | 2019-03-19 | 杭州德联科技股份有限公司 | Based on the optimized control method of combustion under the conditions of discharged nitrous oxides Index Constraints |
| CN109990269A (en) * | 2019-04-23 | 2019-07-09 | 西安热工研究院有限公司 | A kind of W flame boiler allocation of the amount of air regulating system |
| CN110145759A (en) * | 2019-05-08 | 2019-08-20 | 浙江三维橡胶制品股份有限公司 | Oxygen content control system during low-load of boiler |
| CN111174197A (en) * | 2020-01-14 | 2020-05-19 | 湖南文理学院 | Method for detecting and controlling oxygen content of boiler flue gas of power plant |
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