CN209196818U - A kind of small-sized DC boiler - Google Patents
A kind of small-sized DC boiler Download PDFInfo
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- CN209196818U CN209196818U CN201821936367.4U CN201821936367U CN209196818U CN 209196818 U CN209196818 U CN 209196818U CN 201821936367 U CN201821936367 U CN 201821936367U CN 209196818 U CN209196818 U CN 209196818U
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- separation
- attemperator
- feed pump
- steam
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Abstract
The utility model discloses a kind of small-sized DC boilers, including vaporizer, combustion chamber, secondary furnace and back-end ductwork and feed pump, triple valve and separation attemperator etc..Triple valve is connected with economizer, convection bank and feed pump respectively.When boiler startup, after so that deaerated water is entered economizer heat exchange heating by feed pump, triple valve shunting is entered；A part of hot water returns to entrance of water-supplying pump and deaerated water together, reenters economizer heat exchange heating；Another part hot water enters convection bank and continues heat exchange heating.Hot water becomes steam water interface after convection bank exchanges heat, and so that steam water interface is entered separation attemperator, separation attemperator, which carries out vapor-liquid separation to steam water interface as steam-water separator, becomes vapor and hot water；Vapor after making separation, which enters superheater, which continues heating, becomes superheated steam.The utility model protects it from dew point corrosion using economizer heating water re-circulation, easy to operate, economical.
Description
Technical field
The utility model relates to a kind of small-sized DC boilers, belong to field of combustion technology.
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 not only need repair and maintenance simple, also want equipment fuel
Wide adaptability, 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 burning and boiler circuit space limited, it is difficult to completely using big
The mature technology of type station boiler, so that its steam/water circulating needs special consideration.
Utility model content
The purpose of this utility model is to provide a kind of small-sized DC boilers, are particularly suitable for 2 ~ 4t/h of evaporation capacity and steam
The small-sized movable electricity generation boiler of 1.25 ~ 3.82MPa of parameter.
The utility model is achieved through the following technical solutions:
A kind of small-sized DC boiler, vaporizer, combustion chamber, secondary furnace and back-end ductwork including horizontal alignment connection, institute
The fire grate that vaporizer, combustion chamber and secondary furnace bottom are provided with stagger is stated, and the secondary furnace bottom is in the fire grate
Top is formed to the inclined chimney arch in the combustion chamber；The combustion chamber top is equipped with superheater, is provided in the secondary furnace pair
Flowing bundle, the back-end ductwork are provided with economizer；
The boiler further includes that feed pump, triple valve and separation attemperator, the feed pump are connected with the economizer, institute
Triple valve is stated to be connected with economizer, convection bank and feed pump respectively；Separation attemperator setting in the convection bank and
Between the superheater.
In above-mentioned technical proposal, the separation attemperator is provided with temperature control device；And the separation attemperator is given with described
Connecting tube is provided between water pump.
In above-mentioned technical proposal, there is connecting pipe respectively between the triple valve and the convection bank, the feed pump,
Flow control valve is provided in the connecting pipe.
In above-mentioned technical proposal, the boiler further includes oxygen-eliminating device；The oxygen-eliminating device and the feed pump have feedwater piping
It is connected.
When above-mentioned small-sized DC boiler operates normally,
So that deaerated water is entered economizer heat exchange heating as after hot water by feed pump as working medium, is entered by triple valve
Continuing heat exchange heating to convection bank becomes vapor；
So that vapor is entered superheater by separation attemperator and continues heating as superheated steam.
In above-mentioned technical proposal, when the steam temperature is excessively high, the separation attemperator subtracts as attemperator penetrating
Warm water enters back into superheater and continues heating as superheated steam after reducing steam temperature；Superheated steam is for power generation or directly
It uses.
When above-mentioned small-sized DC boiler startup,
So that deaerated water is entered economizer heat exchange heating as after hot water by feed pump as working medium, enters triple valve point
Stream；A part of hot water, which is split, returns to entrance of water-supplying pump and deaerated water together, reenters economizer heat exchange heating；Another part
Hot water be split enter convection bank continue heat exchange heating；
Hot water becomes steam water interface after convection bank exchanges heat, and the steam water interface is made to enter separation attemperator,
The separation attemperator, which carries out vapor-liquid separation to the steam water interface as steam-water separator, becomes vapor and hot water；Make point
Vapor from after, which enters superheater, which continues heating, becomes superheated steam；Superheated steam is used for power generation or directly.
In above-mentioned technical proposal, make the separation attemperator will be under steam water interface separation as steam-water separator
Hot water returns to the entrance of water-supplying pump, reenters economizer heat exchange together as working medium with deaerated water and heats up, participates in carbonated drink and follow
Ring.
The utility model has the following advantages that and the utility model has the advantages that in such a way that economizer heat-exchanging water recirculates, protects
Economizer avoids during boiler startup working medium coolant-temperature gage is too low from causing dew point corrosion, structure and easy to operate, economical and practical；Water
Circulation all using direct current mode, ensure that the safety of boiler circuit and flue gas system heat exchange and flowing in very low height.
Detailed description of the invention
Fig. 1 is a kind of small-sized DC boiler schematics involved in the utility model.
In figure: 1- feeder；2- vaporizer；The combustion chamber 3-；4- secondary furnace；5- fire grate；6- grate wind chamber；7-
Back-end ductwork；8- superheater；9- separates attemperator；10- slag bath；11- convection bank；12- oxygen-eliminating device；13- feed pump；
14- economizer；15- triple valve.
Specific embodiment
Specific embodiment of the present utility model 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 shown in Figure 1, a kind of small-sized DC boiler, vaporizer 2, combustion chamber 3, secondary furnace 4 including horizontal alignment connection
It further include feed pump 13, triple valve 15 and separation attemperator 9 with back-end ductwork 7.Feeder 1 is provided at the top of vaporizer 2.Into
Glassware 1 is using sealing charging.2 lower part of vaporizer is provided with gasifying agent pipe, for being passed through the gasification such as air, oxygen or vapor
Agent.Refractory material is arranged in 2 inner wall of vaporizer, forms insulation furnace wall, so that vaporizer 2 is formed accumulation of heat gasification, 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 10.4 bottom of secondary furnace is formed above fire grate 5 to the inclined chimney arch 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, and is finally reached after-flame.The high-temperature flue gas generated that burns also enters burning under the water conservancy diversion of chimney arch
Room 3.
3 top of combustion chamber is equipped with superheater 8, and high-temperature flue gas exchanges heat with superheater 8 first, subsequently into secondary furnace 4.After-flame
Convection bank 11 is provided in room 4, the outlet of convection bank 11 is connected with attemperator 9 is separated.Economizer is provided in back-end ductwork 7
14.Enter back-end ductwork 7 after exchanging heat into the flue gas of secondary furnace 4 and convection bank 11 and economizer 14 exchanges heat.
Feed pump 13 is connected with economizer 14, and triple valve 15 is connected with economizer, convection bank 11 and feed pump 13 respectively.
There is connecting pipe between triple valve 15 and convection bank 11, feed pump 13 respectively, is provided with flow control valve in connecting pipe.
It separates attemperator 9 to be arranged between convection bank 11 and superheater 8,8 entrance of superheater is connected with attemperator 9 is separated.
Separation attemperator 9 is provided with temperature control device；And connecting tube is provided between separation attemperator 9 and feed pump 13.
Boiler further includes oxygen-eliminating device 12, and oxygen-eliminating device 12 has feedwater piping to be connected with feed pump 13.
When boiler operates normally, deaerated water is persistently supplemented by feed pump 13；
So that deaerated water is entered the heat exchange of economizer 14 heating as after hot water by feed pump 13 as working medium, passes through triple valve
15, which enter convection bank 11, which continues heat exchange heating, becomes vapor；
So that vapor is continued heating into superheater 8 by separation attemperator 9 becomes superheated steam.At this point, separation desuperheat
Device 9 is used as a channel.
When steam temperature is excessively high, separation attemperator 9 sprays into desuperheating water as attemperator, after reducing steam temperature
It enters back into superheater 8 and continues heating as superheated steam.The temperature control device of separation attemperator 9 is used not only for regulation separation attemperator
Vapor (steam) temperature is also fed back to control system, is used for regulating flow regulating valve by 9 spray desuperheating.
When boiler startup,
So that deaerated water is entered the heat exchange of economizer 14 heating as after hot water by feed pump 13 as working medium, enters threeway
Valve 15.To avoid in economizer Temperature of Working is too low from causing dewing corrosion, a part of hot water, which is split, returns to 13 entrance of feed pump
Together with the deaerated water of lasting supplement, the heat exchange heating of economizer 14 is reentered, the heat-exchange working medium temperature of economizer 14 is improved；Separately
A part of hot water be split enter convection bank 11 continue heat exchange heating；
Hot water becomes steam water interface after the heat exchange of convection bank 11, and steam water interface is made to enter separation attemperator 9, point
Carrying out vapor-liquid separation to steam water interface as steam-water separator from attemperator 9 becomes vapor and hot water；Water after making separation
Steam, which enters superheater 8, which continues heating, becomes superheated steam.
The hot water separated under attemperator 9 separates steam water interface as steam-water separator is set to return to water supply by connecting tube
13 entrances are pumped, economizer heat exchange is reentered together as working medium with deaerated water and heats up, participate in steam/water circulating.
The outlet of superheater 11 is connected with steam turbine, and superheated steam is supplied steam turbine power generation.Steam exhaust after steam turbine power generation
It exchanges heat by condenser and returns to 12 boiler of feeding of oxygen-eliminating device after further cooling down and use.Superheated steam can also directly make for technique
With oxygen-eliminating device 12 is supplemented by boiler feedwater at this time.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (4)
1. a kind of small-sized DC boiler, which is characterized in that
The boiler includes vaporizer (2), combustion chamber (3), secondary furnace (4) and the back-end ductwork (7) of horizontal alignment connection, described
Vaporizer (2), combustion chamber (3) and secondary furnace (4) bottom are provided with the fire grate (5) of stagger, and the secondary furnace (4) bottom
Portion is formed above the fire grate (5) to the combustion chamber (3) inclined chimney arch；Combustion chamber (3) top is equipped with superheater
(8), it is provided with convection bank (11) in the secondary furnace (4), the back-end ductwork (7) is provided with economizer (14)；
The boiler further includes feed pump (13), triple valve (15) and separation attemperator (9), the feed pump (13) and the province
Coal device (14) is connected, and the triple valve (15) is connected with economizer, convection bank (11) and feed pump (13) respectively；The separation
Attemperator (9) is arranged between the convection bank (11) and the superheater (8).
2. a kind of small-sized DC boiler according to claim 1, which is characterized in that the separation attemperator (9) is provided with
Temperature control device；And connecting tube is provided between the separation attemperator (9) and the feed pump (13).
3. a kind of small-sized DC boiler according to claim 1, which is characterized in that the triple valve (15) and the convection current
There is connecting pipe respectively between tube bank (11), the feed pump (13), is provided with flow control valve in the connecting pipe.
4. a kind of small-sized DC boiler according to claim 1, which is characterized in that the boiler further includes oxygen-eliminating device
(12)；The oxygen-eliminating device (12) has feedwater piping to be connected with the feed pump (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936367.4U CN209196818U (en) | 2018-11-23 | 2018-11-23 | A kind of small-sized DC boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821936367.4U CN209196818U (en) | 2018-11-23 | 2018-11-23 | A kind of small-sized DC boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209196818U true CN209196818U (en) | 2019-08-02 |
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ID=67425458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821936367.4U Active CN209196818U (en) | 2018-11-23 | 2018-11-23 | A kind of small-sized DC boiler |
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| CN (1) | CN209196818U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404879A (en) * | 2018-11-23 | 2019-03-01 | 北京米能科技有限公司 | A kind of small-sized DC boiler and its start and run water round-robin method |
-
2018
- 2018-11-23 CN CN201821936367.4U patent/CN209196818U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404879A (en) * | 2018-11-23 | 2019-03-01 | 北京米能科技有限公司 | A kind of small-sized DC boiler and its start and run water round-robin method |
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