CN109404882A - A kind of miniature boiler and its water round-robin method - Google Patents
A kind of miniature boiler and its water round-robin method Download PDFInfo
- Publication number
- CN109404882A CN109404882A CN201811403088.6A CN201811403088A CN109404882A CN 109404882 A CN109404882 A CN 109404882A CN 201811403088 A CN201811403088 A CN 201811403088A CN 109404882 A CN109404882 A CN 109404882A
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- drum
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- combustion chamber
- secondary furnace
- convection bank
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000007616 round robin method Methods 0.000 title claims abstract description 7
- 238000002485 combustion reaction Methods 0.000 claims abstract description 89
- 239000006200 vaporizer Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims description 23
- 238000000926 separation method Methods 0.000 claims description 16
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000010248 power generation Methods 0.000 claims description 5
- 230000007423 decrease Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 7
- 239000007789 gas Substances 0.000 description 9
- 238000002309 gasification Methods 0.000 description 6
- 230000005611 electricity Effects 0.000 description 5
- 235000014171 carbonated beverage Nutrition 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007800 oxidant agent Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000006392 deoxygenation reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008439 repair process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/12—Self-contained steam boilers, i.e. comprising as a unit the steam boiler, the combustion apparatus, the fuel storage, accessory machines and equipment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
Abstract
The invention discloses a kind of miniature boiler and its water round-robin methods.Boiler includes vaporizer, combustion chamber and the secondary furnace of horizontal alignment connection, further includes circulating pump and drum.Circulating pump and combustion chamber, secondary furnace water-cooling wall lower header are separately connected, working medium forced circulation between combustion chamber, secondary furnace water-cooling wall and drum.Drum is arranged according to high-order or low level, and circulating pump is connected with drum.When a drum high position is arranged, drum is equipped with down-comer and is connected with circulating pump, and drum is connected with convection bank tube top portion, so that drum and convection bank are randomly formed upwelling and downwelling, working medium Natural Circulation.When drum low level is arranged, convection bank lower header is connect with circulating pump, and convection bank upper collecting chamber is connect with drum, working medium forced circulation.The present invention adds the water-cycling mode of Natural Circulation using forced circulation or forced circulation, ensure that the safe water circulation of miniature boiler.
Description
Technical field
The present invention relates to a kind of miniature boiler and its water round-robin methods, belong to boiler technology field.
Background technique
Remote districts have inconvenient traffic or waterpower, wind-power electricity generation regional load unstable region, resident living power utility or small-sized
Electricity consumption needs to use small-sized movable electricity generation boiler.The emergency service under such as earthquake case of emergency is also required to movable fast-assembling simultaneously
Boiler.At this point, considering that the supply object of system is that resident living power utility or mini electrical equipment are powered, the power of unit should not be set
It sets too greatly, configuration power supply capacity is usually 500~6000KW.And need repair and maintenance simple, also want the adaptation of equipment fuel
Property it is wide, can independent biological substance for combustion, can also be with the mixture of biological substance for combustion and coal, can also be individually coal-fired.
And the miniaturization of this electricity generation boiler, often make carbonated drink space limited, it is difficult to completely utilize large-sized station boiler
Mature technology so that its steam/water circulating needs special consideration.
Summary of the invention
The purpose of the present invention is to provide a kind of miniature boiler and its water round-robin methods, are particularly suitable for 2 ~ 4t/h of evaporation capacity
And the small-sized movable electricity generation boiler of 1.25 ~ 3.82MPa of steam parameter.
The present invention is achieved through the following technical solutions:
A kind of miniature boiler, including horizontal alignment connection vaporizer, combustion chamber and secondary furnace, the vaporizer, combustion chamber and
Secondary furnace bottom is provided with the fire grate of stagger, and the secondary furnace bottom is formed above the fire grate to the burning
The inclined chimney arch in room；
The combustion chamber wall surface and secondary furnace wall surface select water wall structure, are separately connected combuster header and secondary furnace collection
Case；The combustion chamber header includes combustion chamber upper collecting chamber and combustion chamber lower header, and the secondary furnace header includes secondary furnace next part
Case and secondary furnace upper collecting chamber；The combustion chamber top is equipped with superheater, is provided with convection bank (12) in the secondary furnace, described
Convection bank lower header is provided with below convection bank；
The boiler further includes circulating pump and drum, and the drum is arranged according to high-order or low level, the circulating pump and the pot
Cylinder is connected；
The circulating pump is separately connected or is sequentially connected with the secondary furnace lower header and combustion chamber lower header；On the secondary furnace
Header and combustion chamber upper collecting chamber are connect with the drum respectively；The superheater entrance is connect with the drum.
The drum is arranged according to a high position, and the drum is arranged at the top of the combustion chamber and secondary furnace；The drum is set
There is down-comer to be connected with the circulating pump；It is connected at the top of the drum and the convection bank, so that the drum and described right
Flowing bundle forms upwelling and downwelling.
The drum is arranged according to low level, and the drum is arranged on the outside of the middle and lower part of the boiler；The drum and institute
Circulating pump is stated to be connected equipped with pipeline；The convection bank lower header is connect with the circulating pump；Setting at the top of the convection bank
There is convection bank upper collecting chamber, and the convection bank upper collecting chamber is connected with the drum.
A kind of water round-robin method of miniature boiler, which comprises
So that deaerated water is entered drum as working medium, secondary furnace lower header and combustion chamber next part are then respectively enterd by circulating pump
Case, respectively between the secondary furnace header and the secondary furnace wall surface of water wall structure and combustion chamber header and water wall structure
Combustion chamber wall surface between form forced circulation flowing, and by the water wall structure and secondary furnace and burn indoor respectively
Flue gas carries out heat exchange heating, forms steam water interface；
The steam water interface is entered by secondary furnace upper collecting chamber and combustion chamber upper collecting chamber respectively under the action of the circulating pump
Drum carries out steam-water separation, and heating that the vapor after separation enters superheater and the indoor flue gas that burns further exchanges heat is formed
Superheated steam is for power generation；And
Enter the deaerated water as working medium to be mixed into according to high-level installed drum and the hot water under steam-water separation in drum
Mixing water, a part of mixing water enter circulating pump by down-comer, respectively enter secondary furnace lower header and combustion chamber lower header；
A part of mixing water carries out heat exchange heating by a part of convection bank decline and the indoor flue gas of after-flame, forms steam-water mixing
Object collects in convection bank lower header, then rises back to drum by a part of convection bank again, and carbonated drink is carried out in drum
Separation, makes mixing water form natural circulation between convection bank, convection bank lower header and drum；Or
The deaerated water as working medium is set to enter the hot water being arranged in the drum and drum of lower outside in the boiler under steam-water separation
It is mixed into mixing water, secondary furnace lower header, convection bank lower header and combustion chamber lower header are respectively allocated to by circulating pump；
Be further distributed to respectively into the hot water of secondary furnace lower header and combustion chamber lower header water wall structure secondary furnace wall surface and
The combustion chamber wall surface of water wall structure, so that mixing water is respectively in the secondary furnace wall surface of the secondary furnace header and water wall structure
Between and combustion chamber header and the combustion chamber wall surface of cold wall structure between formed forced circulation flowing；Mixing water is in convection current simultaneously
Also forced circulation flowing is formed between tube bank lower header, convection bank, convection bank upper collecting chamber and drum.
The present invention has the following advantages and beneficial effects: due to boiler height very little, combustion chamber water-cooling wall and secondary furnace water
Cold wall Natural Circulation is unreliable, it is necessary to use forced circulation, and convection bank is since heat transfer intensity is low, using forced circulation or from
Right endless form ensure that miniature boiler safe water circulation, so that miniature boiler is safe and reliable to operation.
Detailed description of the invention
Fig. 1 is the miniature boiler schematic diagram of one of embodiment according to the present invention.
Fig. 2 is the miniature boiler schematic diagram of another embodiment according to the present invention.
In figure: 1- feeder；2- vaporizer；The combustion chamber 3-；4- secondary furnace；5- fire grate；6- grate wind chamber；7-
Chimney arch；8- drum；9- secondary furnace lower header；The combustion chamber 10- lower header；11- superheater；12- convection bank；13- is followed
Ring pump；14- convection bank lower header；15- convection bank upper collecting chamber.
Specific embodiment
A specific embodiment of the invention and the course of work are further described with reference to the accompanying drawing.
The positional terms such as the upper, lower, left, right, front and rear in present specification be positional relationship based on the figure and
It establishes.Attached drawing is different, then corresponding positional relationship is also possible to change therewith, therefore cannot be interpreted as with this to protection model
The restriction enclosed.
As depicted in figs. 1 and 2, a kind of miniature boiler, vaporizer 2, combustion chamber 3 and secondary furnace including horizontal alignment connection
4, it further include circulating pump 13 and drum 8, drum 8 is arranged according to high-order or low level, and circulating pump 13 is connected with drum 8.Vaporizer 2 pushes up
Portion is provided with feeder 1.Feeder 1 is using sealing charging.2 lower part of vaporizer is provided with gasifying agent pipe, for being passed through air, oxygen
The gasifying agents such as gas or vapor.Refractory material is arranged in 2 inner wall of vaporizer, forms insulation furnace wall, vaporizer 2 is made to form accumulation of heat gas
Change, reduces gasification temperature.
Vaporizer 2, combustion chamber 3 and 4 bottom of secondary furnace are provided with the fire grate 5 of stagger, and 5 bottom of fire grate is provided with furnace
Exhaust air box 6.Fire grate 5 arranges that inclination angle is less than 15 ° along material direction of travel diagonally downward.It is logical that blanking is arranged in 5 end of fire grate
Road, blanking channel bottom are arranged in slag bath.4 bottom of secondary furnace is formed above fire grate 5 to the inclined chimney arch 7 in combustion chamber 3.
Fuel enters in vaporizer 2 from feeder 1 is sealed, gasifies in 2 accumulation of heat of vaporizer and generates gasification gas and gasification
Residue, gasification gas enter combustion chamber 3, and the oxidant burning being passed through with combustion chamber 3 generates high-temperature flue gas.The gas of 2 lower section of vaporizer
Change residue to continue to gasify with the gasifying agent effect being passed through from the grate wind chamber 6 of 5 bottom of fire grate on fire grate 5, forward with fire grate 5
It gradually burns in progradation in the oxidant effect that grate wind chamber 6 is passed through, and is finally reached after-flame.Burn the high temperature cigarette generated
Gas also enters combustion chamber 3 under the water conservancy diversion of chimney arch 7.
Combustion chamber 3 and 4 wall surface of secondary furnace select water wall structure, are respectively equipped with combustion chamber header and secondary furnace header.Combustion
Burning room header includes combustion chamber upper collecting chamber and combustion chamber lower header 10, and upper collecting chamber setting in combustion chamber is in 3 top of combustion chamber, combustion chamber
Lower header 10 is arranged in 3 bottom of combustion chamber, connect with the water cooling tube in the water wall structure of 3 wall surface of combustion chamber, forms carbonated drink and follows
Annular space.Secondary furnace header includes secondary furnace lower header 9 and secondary furnace upper collecting chamber, and the setting of secondary furnace upper collecting chamber is pushed up in secondary furnace 4
Portion, secondary furnace lower header 11 are arranged in 4 bottom of secondary furnace, connect with the water cooling tube in the water wall structure of 4 wall surface of secondary furnace, shape
At steam/water circulating space.
Circulating pump 13 is sequentially connected secondary furnace lower header 9 and combustion chamber lower header 10, and working medium is passed sequentially through under secondary furnace
Header 9 and combustion chamber lower header 10 are sent into water-cooling wall, and so that working medium and flue gas heat exchange is absorbed heat becomes steam water interface.Alternatively,
Working medium with secondary furnace lower header 9 and combustion chamber lower header 10, is passed through secondary furnace lower header 9 and burning respectively by circulating pump 13 respectively
Room lower header 10 is sent into water-cooling wall, and so that working medium and flue gas heat exchange is absorbed heat becomes steam water interface.Steam water interface leads to respectively
It crosses secondary furnace upper collecting chamber and combustion chamber upper collecting chamber collects, be then sent to drum 8 respectively and carry out steam-water separation.
3 top of combustion chamber is equipped with superheater 11, and 11 entrance of superheater is connect with drum 8, generates in drum 8 through steam-water separation
Steam enter superheater 11 and continue to be heated to form superheated steam.The outlet of superheater 11 is connected with Turbo-generator Set, will overheat
Steam supplies Turbo-generator Set power generation.Enter oxygen-eliminating device after steam exhaust condensation after Turbo-generator Set power generation, deoxygenation is raw again
It is used at deaerated water boiler of feeding.
It is provided with convection bank 12 in secondary furnace 4, is provided with convection bank lower header 14 below the convection bank 12.
One of embodiment is as shown in Figure 1, drum 8 is arranged according to a high position, by the setting of drum 8 in combustion chamber 3 and combustion
4 top of room to the greatest extent.Drum 8 is equipped with down-comer and is connected with the circulating pump 13.Drum 8 is connected with 12 tube top portion of convection bank, so that
Upwelling and downwelling is randomly formed between drum 8 and convection bank 12.Persons skilled in the art are understood that and imagine
The random distribution feature that hot water decline and steam water interface rise between drum 8 and convection bank 12.
Another embodiment drum 8 is arranged in outside the middle and lower part of boiler as shown in Fig. 2, drum 8 is arranged according to low level
Side is generally arranged at boiler platform.Drum 8 is connected with circulating pump 13 equipped with pipeline.Convection bank lower header 14 and circulating pump 13
Connection.Convection bank upper collecting chamber 15 is provided at the top of convection bank 12, and convection bank upper collecting chamber 15 is connected with drum 8.
Make fuel enter vaporizer 2 from feeder 1 to gasify, the gasification gas of generation enters combustion chamber 3；In 3 entrance of combustion chamber
Oxidant (air) is passed through as Secondary Air to light and combustion-supporting gasification gas, the gas burning that makes to gasify generates high-temperature flue gas；Vaporizer 2
The residue after gasifying of generation gasifies on fire grate 5, burns, and the high-temperature flue gas for generation of burning also enters combustion chamber under 7 water conservancy diversion of chimney arch
3。
So that deaerated water is entered drum 8 as working medium, secondary furnace lower header 4 and burning are then respectively enterd by circulating pump 13
Room lower header 10, respectively between the secondary furnace header and 4 wall surface of secondary furnace of water wall structure and combustion chamber header and
Forced circulation flowing is formed between 3 wall surface of combustion chamber of water wall structure, and passes through the water wall structure and secondary furnace 4 respectively
Heat exchange heating is carried out with the high-temperature flue gas in combustion chamber 3, forms steam water interface.3 wall surface temperature of combustion chamber is high, in circulating pump 13
Under the forced cycling hot water being passed through, it can be damaged to avoid wall superheat.
Steam water interface enters pot by secondary furnace upper collecting chamber and combustion chamber upper collecting chamber respectively under the action of circulating pump 13
Cylinder 8 carries out steam-water separations, and the flue gas that the vapor after separation enters in superheater 11 and combustion chamber 3 further exchanges heat heating, shape
At superheated steam for power generation.
Enter the deaerated water as working medium mixed according to high-level installed drum 8 and the hot water under steam-water separation in drum 8
Mixing water is synthesized, a part of mixing water enters circulating pump 13 by down-comer, respectively enters secondary furnace lower header 4 and burning
Room lower header 10；A part of mixing water carries out heat exchange heating with the flue gas in secondary furnace 4 by a part of convection bank 12 decline,
Steam water interface is formed, convection bank lower header 14 is collected in, drum is then risen back to by a part of convection bank 12 again
8, steam-water separation is carried out in drum 8, forms mixing water between convection bank 12, convection bank lower header 14 and drum 8
Natural circulation.
Alternatively, the deaerated water as working medium is made to enter the setting drum 8 of lower outside and carbonated drink point in drum 8 in the boiler
Hot water under is mixed into temperature mixing water appropriate, is respectively allocated to secondary furnace lower header 9, convection tube by circulating pump 13
Beam lower header 14 and combustion chamber lower header 10；Distinguish into the hot water of secondary furnace lower header 9 and combustion chamber lower header 10 further
The secondary furnace wall surface of water wall structure and the combustion chamber wall surface of water wall structure are distributed to, so that mixing water is respectively in the after-flame
Between room header and 4 wall surface of secondary furnace of water wall structure and between combustion chamber header and 3 wall surface of combustion chamber of cold wall structure
Form forced circulation flowing；Mixing water is in convection bank lower header 14, convection bank 12, convection bank upper collecting chamber 15 and pot simultaneously
Also forced circulation flowing is formed between cylinder 8.
Drum 8 is provided with the measurements such as water-level gauge, thermometer or monitoring device, by adjusting the mixing of deoxygenation runoff investigation drum
The temperature of water.Deaerated water is supplied and is adjusted by feed pump.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of miniature boiler, which is characterized in that
The boiler includes the vaporizer (2) of horizontal alignment connection, combustion chamber (3) and secondary furnace (4), the vaporizer (2), combustion
The fire grate (5) that room (3) and secondary furnace (4) bottom is provided with stagger is burnt, and the secondary furnace (4) bottom is in the fire grate
(5) top is formed to the combustion chamber (3) inclined chimney arch (7)；
Combustion chamber (3) wall surface and secondary furnace (4) wall surface select water wall structure, are separately connected combuster header and after-flame
Room header；The combustion chamber header includes combustion chamber upper collecting chamber and combustion chamber lower header (10), and the secondary furnace header includes combustion
Room lower header (9) and secondary furnace upper collecting chamber to the greatest extent；Combustion chamber (3) top is equipped with superheater (11), sets in the secondary furnace (4)
It is equipped with convection bank (12), is provided with convection bank lower header (14) below the convection bank (12)；
The boiler further includes circulating pump (13) and drum (8), and the drum (8) is arranged according to high-order or low level, the circulation
Pump (13) is connected with the drum (8)；
The circulating pump (13) is separately connected or is sequentially connected with the secondary furnace lower header (9) and combustion chamber lower header (10)；
The secondary furnace upper collecting chamber and combustion chamber upper collecting chamber are connect with the drum (8) respectively；Superheater (11) entrance with it is described
Drum (8) connection.
2. a kind of miniature boiler according to claim 1, which is characterized in that the drum (8) is arranged according to a high position, described
Drum (8) setting is at the top of the combustion chamber (3) and secondary furnace (4).
3. a kind of miniature boiler according to claim 2, which is characterized in that the drum (8) be equipped with down-comer with it is described
Circulating pump (13) is connected.
4. a kind of miniature boiler according to claim 3, which is characterized in that the drum (8) and the convection bank
(12) top is connected, so that the drum (8) and the convection bank (12) form upwelling and downwelling.
5. a kind of miniature boiler according to claim 1, which is characterized in that the drum (8) is arranged according to low level, described
Drum (8) is arranged on the outside of the middle and lower part of the boiler；The drum (8) is equipped with pipeline phase with the circulating pump (13).
6. a kind of miniature boiler according to claim 5, which is characterized in that the convection bank lower header (14) with it is described
Circulating pump (13) connection.
7. a kind of miniature boiler according to claim 6, which is characterized in that be provided at the top of the convection bank (12) pair
Flowing bundle upper collecting chamber (15), and the convection bank upper collecting chamber (15) is connected with the drum (8).
8. a kind of water round-robin method of miniature boiler uses a kind of such as described in any item miniature boilers of Claims 1-4,
It is characterized in that, which comprises
So that deaerated water is entered drum (8) as working medium, then respectively enters secondary furnace lower header (4) and combustion by circulating pump (13)
It burns room lower header (10), respectively between the secondary furnace header and secondary furnace (4) wall surface of water wall structure and combustion chamber
Forced circulation flowing is formed between header and combustion chamber (3) wall surface of water wall structure, and passes through the water wall structure respectively
Heat exchange heating is carried out with the flue gas in secondary furnace (4) and combustion chamber (3), forms steam water interface；
The steam water interface passes through secondary furnace upper collecting chamber and combustion chamber upper collecting chamber under the action of the circulating pump (13) respectively
Steam-water separation is carried out into drum (8), the vapor after separation enters superheater (11) and the flue gas in combustion chamber (3) is further
Heat exchange heating forms superheated steam for power generation；And
Enter the deaerated water as working medium mixed according to the hot water under high-level installed drum (8) and drum (8) interior steam-water separation
Synthesize mixing water, a part of mixing water enters circulating pump (13) by down-comer, respectively enter secondary furnace lower header (4) and
Combustion chamber lower header (10)；A part of mixing water by a part of convection bank (12) decline with secondary furnace (4) in flue gas into
Row heat exchange heating, forms steam water interface, collects in convection bank lower header (14), then pass through a part of convection bank again
(12) drum (8) are risen back to, steam-water separation is carried out in drum (8), makes mixing water under convection bank (12), convection bank
Natural circulation is formed between header (14) and drum (8)；Or
Enter the deaerated water as working medium to be arranged under the drum (8) of lower outside in the boiler and drum (8) interior steam-water separation
Hot water be mixed into mixing water, secondary furnace lower header (9), convection bank lower header are respectively allocated to by circulating pump (13)
(14) and combustion chamber lower header (10)；Distinguish into the hot water of secondary furnace lower header (9) and combustion chamber lower header (10) further
The secondary furnace wall surface of water wall structure and the combustion chamber wall surface of water wall structure are distributed to, so that mixing water is respectively in the after-flame
Between room header and secondary furnace (4) wall surface of water wall structure and combustion chamber (3) wall surface of combustion chamber header and cold wall structure
Between formed forced circulation flowing；Mixing water collects in convection bank lower header (14), convection bank (12), convection bank simultaneously
Also forced circulation flowing is formed between case (15) and drum (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403088.6A CN109404882A (en) | 2018-11-23 | 2018-11-23 | A kind of miniature boiler and its water round-robin method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811403088.6A CN109404882A (en) | 2018-11-23 | 2018-11-23 | A kind of miniature boiler and its water round-robin method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404882A true CN109404882A (en) | 2019-03-01 |
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ID=65474731
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811403088.6A Pending CN109404882A (en) | 2018-11-23 | 2018-11-23 | A kind of miniature boiler and its water round-robin method |
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| CN209196819U (en) * | 2018-11-23 | 2019-08-02 | 北京米能科技有限公司 | A kind of miniature boiler |
-
2018
- 2018-11-23 CN CN201811403088.6A patent/CN109404882A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2786439Y (en) * | 2005-02-05 | 2006-06-07 | 哈尔滨呼兰工业锅炉制造有限责任公司 | Reciprocating grate type coal-coal gas integrated boiler |
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Application publication date: 20190301 |