CN206420144U - A kind of double drum longitudinal water-tube boilers of flue gas interior circulation - Google Patents
A kind of double drum longitudinal water-tube boilers of flue gas interior circulation Download PDFInfo
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- CN206420144U CN206420144U CN201621445486.0U CN201621445486U CN206420144U CN 206420144 U CN206420144 U CN 206420144U CN 201621445486 U CN201621445486 U CN 201621445486U CN 206420144 U CN206420144 U CN 206420144U
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- water
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- burner hearth
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- wall
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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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
A kind of double drum longitudinal water-tube boilers of flue gas interior circulation, are related to boiler technology field.It includes the water-cooling wall outside left side, and the burner hearth that water-cooling wall is formed outside right side, water-cooling wall is close to direction on the inside of burner hearth and is additionally provided with water-cooling wall in left side outside left side, outside left side water-cooling sandwich is formed in water-cooling wall and left side between water-cooling wall, water-cooling wall is close to direction on the inside of burner hearth and is provided with outside water-cooling wall in right side, right side outside right side forms water-cooling sandwich in water-cooling wall and right side between water-cooling wall.All heating surfaces of the utility model are arranged between upper drum and lower drum, and upper drum is longitudinally arranged with lower drum, flue gas is mixed by water-cooling sandwich in burner hearth inner circulating reflux with the high-temperature flue gas newly formed, and then reduce ignition temperature, nitrogen oxides is reduced to produce, and then reduce the discharge of nitrogen oxides, meet the requirement of environmental protection.Convection bank uses needle-tube high efficient heat exchanging element, and heat transfer efficiency is high, and compact conformation, the boiler of larger capacity can accomplish self-contained dispatch from the factory.
Description
Technical field
The utility model is related to boiler technology field, and in particular to a kind of double drum longitudinal water pipes pot of flue gas interior circulation
Stove.
Background technology
The main flow structure type of current oil-burning gas-fired boiler middle-size and small-size on the market is generally pan shell type（WNS）Series and waterpipe type
（SZS）Series.General evaporation capacity preferably uses pan shell type in below 20t/h（WNS）Structural series, evaporation capacity is in more than 20t/h
Larger capacity preferably selects waterpipe type compared with high parameter（SZS）Series.Existing waterpipe type（SZS）Boiler series structure type is used
Double drum longitudinal structures, convection bank is light pipe type structure, and physical dimension is larger, and machine volume is huge, and construction transport etc. is deposited
In inconvenience, heat exchange efficiency is low, and nitrogen oxide emission is high, and evaporation capacity is general because of transportation problem in more than 30t/h boiler
Using mode in bulk of dispatching from the factory, transport and site operation difficulty are added.
The content of the invention
The purpose of this utility model is that there is provided a kind of double drums of flue gas interior circulation to overcome above-mentioned the deficiencies in the prior art
Longitudinal water-tube boiler.The utility model is using double drum longitudinal water pipe structures, by setting water-cooling sandwich, cigarette in burner hearth
Gas is mixed by water-cooling sandwich in burner hearth inner circulating reflux with the high-temperature flue gas newly formed, and then reduces ignition temperature, reduces nitrogen
Oxide is produced, and then reduces the discharge of nitrogen oxides, meet the requirement of environmental protection.Convection bank is using needle-tube high efficient heat exchanging member
Part, heat transfer efficiency is high, and all heating surfaces are arranged between upper drum and lower drum, and upper drum and the longitudinal cloth of lower drum
Put, compact conformation, the boiler of larger capacity can accomplish self-contained dispatch from the factory.
To achieve the above object, the utility model uses following technical proposals：A kind of double drums of flue gas interior circulation are longitudinal
Formula water-tube boiler, it includes water-cooling wall outside the burner hearth of the water-cooling wall formation outside water-cooling wall, and right side outside left side, the left side and is close to
Direction is additionally provided with outside water-cooling wall in left side, left side and forms water-cooling sandwich between water-cooling wall in water-cooling wall and left side on the inside of burner hearth,
Water-cooling wall is close to direction on the inside of burner hearth and is provided with outside water-cooling wall in right side, right side water-cooling wall in water-cooling wall and right side outside the right side
Between form water-cooling sandwich, each water-cooling sandwich has smoke backflow entrance away from burner hearth front wall one end and close to stove
The smoke backflow outlet of thorax front wall one end；
The burner hearth front end is provided with the burner hearth front wall of assembling burner, and the rear end of burner hearth is provided with wall after burner hearth；Burner hearth
Top be provided with what is be connected with water-cooling wall upper end in water-cooling wall outside water-cooling wall in water-cooling wall outside left side, left side, right side, right side
Upper drum, the bottom of burner hearth is provided with and water-cooling wall in water-cooling wall outside water-cooling wall in water-cooling wall outside left side, left side, right side, right side
The lower drum that lower end is connected；Also it is communicated with the upper drum on convection bank upper collecting chamber, lower drum and is communicated with convection bank
Lower header, the convection bank upper collecting chamber is connected with convection bank lower header by convection bank, outside the convection bank
Uniform distribution is welded with multiple circular steel columns and forms aciculiform heating surface of tubes to external diffusion on wall；Between the burner hearth and convection bank
It is provided with flue gas circulation passage.
It is preferred that, with being each equipped with bearing on the bottom surface of convection bank lower header on the bottom surface of the lower drum.
It is preferred that, it is provided with convection bank exterior wall on the outside of the convection bank.
The beneficial effects of the utility model are：
The utility model is using double drum longitudinal water pipe structures, and by setting water-cooling sandwich in burner hearth, flue gas passes through
Water-cooling sandwich is mixed in burner hearth inner circulating reflux with the high-temperature flue gas newly formed, and then reduces ignition temperature, reduces nitrogen oxides
Produce, and then reduce the discharge of nitrogen oxides, meet the requirement of environmental protection.Convection bank uses needle-tube high efficient heat exchanging element, heat transfer
Efficiency high, all heating surfaces are arranged between upper drum and lower drum, and upper drum is longitudinally arranged with lower drum, and structure is tight
Gather, the boiler of larger capacity can accomplish self-contained dispatch from the factory.
Brief description of the drawings
Fig. 1 is the main structure diagram of the utility model embodiment；
Fig. 2 is the side structure schematic view of the utility model embodiment；
Fig. 3 is burner hearth internal structure schematic diagram；
Fig. 4 is burner hearth inside smoke flow regime schematic diagram；
Wall 6 after burner 1, burner hearth front wall 2, flame 3, upper drum 4, lower drum 5, burner hearth, bearing 7, water-cooling wall outside left side
8th, water-cooling wall 9 in left side, water-cooling sandwich 10, smoke backflow entrance 10a, smoke backflow outlet 10b, burner hearth 11, water cooling outside right side
Water-cooling wall 13, convection bank 14, convection bank exterior wall 15, convection bank upper collecting chamber 16, convection bank lower header in wall 12, right side
17。
Embodiment
The utility model is further illustrated with reference to the accompanying drawings and examples.In the following detailed description, only pass through
The mode of explanation describes some one exemplary embodiments of the present utility model.Undoubtedly, one of ordinary skill in the art can
, can be with a variety of modes to described in the case of without departing from spirit and scope of the present utility model to recognize
Embodiment be modified.Therefore, accompanying drawing and description are inherently illustrative, rather than for limiting the guarantor of claim
Protect scope.
As shown in Figure 1 to Figure 3, double drum longitudinal water-tube boilers of a kind of flue gas interior circulation, it includes the water outside left side
Water-cooling wall 8 is close to direction on the inside of burner hearth and is additionally provided with outside cold wall 8, and the burner hearth 11 that water-cooling wall 12 is formed outside right side, the left side
Form water-cooling wall outside water-cooling sandwich 10, the right side outside water-cooling wall 9 in left side, left side in water-cooling wall 8 and left side between water-cooling wall 9
12, which are close to direction on the inside of burner hearth, is provided with formation between water-cooling wall 13 in water-cooling wall 13 in right side, the outer water-cooling wall 12 in right side and right side
Water-cooling sandwich 10, each water-cooling sandwich 10 has smoke backflow entrance 10a and close stove away from the one end of burner hearth front wall 2
The smoke backflow outlet 10b of the one end of thorax front wall 2；
The front end of burner hearth 11 is provided with the burner hearth front wall 2 of assembling burner 1, and the rear end of burner hearth 11 is provided with wall after burner hearth
6；The top of burner hearth 11 is provided with and water-cooling wall in water-cooling wall 12 outside water-cooling wall 9 in water-cooling wall outside left side 8, left side, right side, right side
The upper drum 4 that 13 upper ends are connected, the bottom of burner hearth 11 be provided with outside water-cooling wall 9 in water-cooling wall outside left side 8, left side, right side
The lower drum 5 that the lower end of water-cooling wall 13 is connected in water-cooling wall 12, right side；Also it is communicated with convection bank and collects on the upper drum 4
Convection bank lower header 17 is communicated with case 16, lower drum 5, the convection bank upper collecting chamber 16 leads to convection bank lower header 17
Cross convection bank 14 to be connected, uniform distribution is welded with multiple circular steel columns and formed to external diffusion on the outer wall of the convection bank 14
Aciculiform heating surface of tubes；Flue gas circulation passage is provided between the burner hearth 11 and convection bank 14.
As shown in Figures 1 to 4, flue gas interior circulation water-tube boiler is double drum longitudinal structures, and heating surface is arranged in
Between drum and lower drum, and upper drum is longitudinally arranged with lower drum.In work in use, the high-temperature flue gas that burner 1 is produced
Sprayed at a high speed from burner outlet, form the combustion flame 3 for spraying into burner hearth 11；Working medium-steam water interface water-cooling wall outside left side
8th, water-cooling wall 9 in left side, water-cooling wall 12 outside right side, water-cooling wall 12 in right side, upper drum 4, in the circulatory system of the formation of lower drum 5
Circulate.High-temperature flue gas forms the flue gas of lower temperature, a portion is by smoke backflow after the radiation heat transfer of burner hearth 11
Entrance 10a enters water-cooling sandwich 10, and by smoke backflow outlet, 10b is back to stove after further being cooled by water-cooling sandwich 10
The anterior near exit of burner 1 of thorax 11, forms relatively low ignition temperature, and then control after being mixed with the high-temperature flue gas of new production
The formation of nitrogen oxides processed.Then high-temperature flue gas enters the progress heat convection of convection bank 14 by flue gas circulation passage, fully
Exchange heat and air is discharged into after cooling or air is discharged into after further exchanging heat cooling into energy-saving appliance.
On the basis of above-mentioned technical proposal, on the bottom surface of the lower drum 5 with the bottom surface of convection bank lower header 17
It is equipped with bearing 7.It is arranged such, facilitates the placement and adjustment of boiler complete machine, meets Shi Jishiyong needs.
On the basis of above-mentioned technical proposal, the outside of convection bank 14 is provided with convection bank exterior wall 15.It is arranged such,
Convection bank 14 is protected by convection bank exterior wall 15, while forming flue gas circulation passage guiding flue gas flow direction.
Limitation to the utility model protection domain, one of ordinary skill in the art should be understood that in skill of the present utility model
On the basis of art scheme, those skilled in the art need not pay the various modifications that creative work can make or deformation still exists
Within protection domain of the present utility model.
Claims (3)
1. a kind of double drum longitudinal water-tube boilers of flue gas interior circulation, it is characterised in that：It includes the water-cooling wall outside left side
(8) burner hearth (11) of water-cooling wall (12) formation, and outside right side, the outer water-cooling wall (8) in the left side is close to burner hearth inner side direction and also set
Formation water-cooling sandwich (10) between water-cooling wall (9) is equipped with water-cooling wall (9) in left side, the outer water-cooling wall (8) in left side and left side, it is described
Water-cooling wall (12) is close to direction on the inside of burner hearth and is provided with water-cooling wall (12) and right side outside water-cooling wall (13) in right side, right side outside right side
Water-cooling sandwich (10) is formed between interior water-cooling wall (13), each water-cooling sandwich (10) has away from burner hearth front wall (2) one end
Smoke backflow entrance (10a) and close to burner hearth front wall (2) one end smoke backflow outlet (10b)；
Burner hearth (11) front end is provided with the burner hearth front wall (2) of assembling burner (1), and the rear end of burner hearth (11) is provided with burner hearth
Wall (6) afterwards；The top of burner hearth (11) is provided with and water-cooling wall outside water-cooling wall (9) in water-cooling wall outside left side (8), left side, right side
(12), the upper drum (4) that water-cooling wall (13) upper end is connected in right side, the bottom of burner hearth (11) is provided with and water-cooling wall outside left side
(8), water-cooling wall (9) in left side, water-cooling wall (12) outside right side, the lower drum (5) that water-cooling wall (13) lower end is connected in right side；Institute
State and convection bank upper collecting chamber (16) be also communicated with upper drum (4), convection bank lower header (17) is communicated with lower drum (5),
The convection bank upper collecting chamber (16) is connected with convection bank lower header (17) by convection bank (14), the convection bank
(14) uniform distribution is welded with multiple circular steel columns and forms aciculiform heating surface of tubes to external diffusion on outer wall；The burner hearth (11) with
Convection bank is provided with flue gas circulation passage between (14).
2. a kind of double drum longitudinal water-tube boilers of flue gas interior circulation according to claim 1, it is characterised in that：It is described
With being each equipped with bearing (7) on the bottom surface of convection bank lower header (17) on the bottom surface of lower drum (5).
3. a kind of double drum longitudinal water-tube boilers of flue gas interior circulation according to claim 1 or 2, it is characterised in that：
Convection bank exterior wall (15) is provided with the outside of the convection bank (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445486.0U CN206420144U (en) | 2016-12-27 | 2016-12-27 | A kind of double drum longitudinal water-tube boilers of flue gas interior circulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621445486.0U CN206420144U (en) | 2016-12-27 | 2016-12-27 | A kind of double drum longitudinal water-tube boilers of flue gas interior circulation |
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| Publication Number | Publication Date |
|---|---|
| CN206420144U true CN206420144U (en) | 2017-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621445486.0U Active CN206420144U (en) | 2016-12-27 | 2016-12-27 | A kind of double drum longitudinal water-tube boilers of flue gas interior circulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954276A (en) * | 2018-08-03 | 2018-12-07 | 东北大学 | A kind of boiler with air interlayer |
-
2016
- 2016-12-27 CN CN201621445486.0U patent/CN206420144U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954276A (en) * | 2018-08-03 | 2018-12-07 | 东北大学 | A kind of boiler with air interlayer |
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