CN208282394U - Forced-circulation hot water boiler - Google Patents
Forced-circulation hot water boiler Download PDFInfo
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- CN208282394U CN208282394U CN201820406785.6U CN201820406785U CN208282394U CN 208282394 U CN208282394 U CN 208282394U CN 201820406785 U CN201820406785 U CN 201820406785U CN 208282394 U CN208282394 U CN 208282394U
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Abstract
The utility model discloses a kind of forced-circulation hot water boilers, it is characterized by: surrounding the burner hearth A and flue B being vertically arranged by furnace wall, burner hearth A and flue B is kept apart by rear furnace wall and burner hearth A and flue B goes out smokestack via the burner hearth being arranged below rear furnace wall and is interconnected, but also with simplified and compact structure under the premise of meeting forced circulation function, the volume of burner hearth A and flue B are almost suitable, in specific processing, boiler can substantially be processed by two parts of burner hearth A and flue B point, then it welds again and last welding capacity is few, it will can thus complete the process substantially and the burner hearth A and flue B of all welding position quality of strict inspection are shipped respectively to erecting bed, implement last welding at the scene, it can be to avoid the transport problem of super large shape object, simultaneously because boiler is by the way of forced circulation , the available effective cooling of the component easy to damage such as heating surface improves the service life of boiler.
Description
Technical field
The utility model relates to boilers, in particular to corner tube type forced-circulation hot water boiler.
Background technique
It is called for response national energy conservation and emission reduction, heating system mostly uses the form of central heating, the enlargement of hot-water boiler
It is imperative.For tradition large size SZS hot-water boiler (>=29MW), there are the following problems: the shape for mostly using loose mail to deliver
Formula, in-site installation (welding) workload is huge, and due to being limited installation quality, detection device deficiency, work by in-site installation condition
Phase it is difficult to ensure that；Boiler Convection Heating Surface is generally Natural Circulation, and there are water to recycle insecure problem；Boiler is with there are two pots
Cylinder cause water capacity is big, boiler heat storage is big, starting slowly, load responding speed it is slow；Occupied area is generally larger, causes initially to throw
Money is big；Since drum and complicated convection heating surface cause boiler steel consumption bigger than normal；Boiler foundation is more complex, and civil engineering cost is high；
Especially there is booster in convective region, then needs replacing full wafer heating surface, inconvenient maintenance；Burner is preposition, and burner hearth goes out
Mouth is located at side, and there are flame bias current, boiler temperature field uniformity is difficult to ensure.
Utility model content
The purpose of the utility model is to provide forced-circulation hot water boilers, under the premise of improving heat exchanger effectiveness, reduce
Installation space that equipment occupies and the service life for being conducive to improve boiler.
To achieve the above object, the utility model uses a kind of following technical scheme: forced-circulation hot water boiler, special
Sign is: surrounding the burner hearth A and flue B being vertically arranged by furnace wall, burner hearth A and flue B is kept apart by rear furnace wall and burner hearth A
Go out smokestack via the burner hearth being arranged below rear furnace wall with flue B to be interconnected, the furnace wall is membrane wall, and high temperature gas flow is from furnace
The top thorax A, which is extended downwardly, to be gone out smokestack by the burner hearth below rear furnace wall and flow in flue B, then by exchanging heat from bottom to top in flue B after
Discharge；Cold water is originated from the lower end introducing of the furnace wall of flue B, and the water after preliminary heating is drawn simultaneously certainly from the upper end of the furnace wall of flue B
To the furnace wall lower end of burner hearth A, the hot water effluent after further heating from bottom to top again later to the upper end burner hearth A collects for upper and lower guidance
Case.
In above-mentioned technical proposal, furnace wall is both the furnace for constituting burner hearth A after burner hearth A and flue B are spaced apart i.e. by rear furnace wall
Wall, while being also the wall of flue B, it is overall but also with simplified and compact structure under the premise of meeting forced circulation function
From, the volume of burner hearth A and flue B are almost suitable, and in specific processing, boiler can substantially be pressed to burner hearth A and flue B two
Then a part is welded and last welding capacity is few again point to process, will can thus complete the process substantially and strictly
The burner hearth A and flue B for detecting all welding position quality are shipped respectively to erecting bed, implement last welding at the scene, in this way
Can be to avoid the transport problem of super large shape object, simultaneously because boiler is by the way of forced circulation, the portion easy to damage such as heating surface
The available effective cooling of part, improves the service life of boiler.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2,3 are A-A in Fig. 1, B-B direction cross-sectional view respectively；
Fig. 4 is the utility model schematic perspective view；
Fig. 5 is the schematic perspective view of burner hearth, flue decomposing state respectively；
Fig. 6 is the utility model flow direction schematic diagram.
Specific embodiment
Referring to attached drawing, a kind of forced-circulation hot water boiler is surrounded the burner hearth A and flue B being vertically arranged, burner hearth A by furnace wall
Go out smokestack 11 by the burner hearth that rear furnace wall 10 keeps apart and is arranged below burner hearth A and flue B and rear furnace wall 10 with flue B mutually to interconnect
Logical, the furnace wall is membrane wall, and high temperature gas flow is extended downwardly from the top burner hearth A goes out smokestack 11 by the burner hearth of rear 10 lower section of furnace wall
It flow in flue B, then by being discharged after exchanging heat from bottom to top in flue B；The lower end of furnace wall of the cold water from flue B introduces, tentatively
Water after heating is drawn from the upper end of the furnace wall of flue B and is guided from top to bottom to the furnace wall lower end of burner hearth A, later again from lower and
To hot water effluent's header 20 of the upper end burner hearth A after upper further heating.
In above scheme, the path direction of burner hearth A and flue B are all vertically arranged, and only the two is implemented to connect in lower part
Logical, high temperature gas flow flows from above to below in burner hearth A and enters flue B in burner hearth A and the lower part flue B connectivity part, then again certainly
It is discharged after flowing to the upper end flue B on down.Water in high-temperature flue gas and mode wall implements heat exchange, and heat exchange efficiency is high, simultaneously
Since the water in mode wall is also to be flowed using forced circulation mode, tentatively heated then further in flue B first
Heating, ensure that the available effective cooling of the components easy to damage such as mode wall heating surface, i.e. shadow of the heat exchanger components because of cold and hot stress
Ring and caused by welding position damage phenomenon be able to effectively avoid or improve, improve the service life of boiler.
Furthermore burner hearth A and the respective volume of flue B are substantially suitable, can implement to process respectively in processing, reserve collection case portion
Point a small amount of welding workload so that it is convenient to large-scale component transport, handling, in boiler using erecting bed again by the pre- of the two
Welding position is stayed to implement welding, the quality for guaranteeing the preparatory welding position of component also advantageous in this way is from damage.
Wing furnace wall 40 of the burner hearth A by preceding furnace wall 30 positioned opposite and rear furnace wall 10 and between the two encloses perpendicular
To the chamber of arrangement, there is rear wall lower header 50 in the lower section of rear furnace wall 10, and preceding furnace wall 30 includes the front wall portion arranged vertically and lower end
Extend and be connected to the burner hearth bottom wall 32 of rear wall lower header 50, the mode joint face water pipe below on rear furnace wall 10 obliquely downwards
Extend and be communicated to rear wall lower header 50 under interval and bending phase, where the water pipe that the interval and bending extend downwardly
Region constitutes burner hearth and goes out smokestack 11.
In above scheme, the lower part of preceding furnace wall 30 is disposed to extend and constitutes burner hearth bottom wall 32, reduces the Welder of pipeline
It measures, and constitutes burner hearth bottom wall 32 in passing, ensure that the integrality and heat transfer efficiency of burner hearth；The middle upper section processing of furnace wall 10 afterwards
At mode wall, the buffer action for constituting burner hearth A and flue B is played, and the water pipe below of the mode wall surface in rear furnace wall 10 is protected
Arranged for interval state independent of each other is held, connection window is thus naturally constituted and is circulated through for high-temperature flue gas into flue B and implement
Forced circulation heat exchange.Furnace wall 10 is both the constitutive requirements of burner hearth A and the constitutive requirements of flue B after above-mentioned, reduces structure in this way
It causes originally to decrease boiler volume and weight.Under mode joint face water pipe interval below and bending phase afterwards on furnace wall 10
It is disposed to extend and not only constitutes burner hearth and go out smokestack 11, but also high-temperature flue gas is passed through around water pipe, so that burner hearth goes out at smokestack 11
Water pipe heat exchange efficiency is improved.
Flue B is constituted by following preferred embodiment, and the rear furnace wall 10 is arranged opposite to each other with flue rear wall 60, rear furnace wall
10 side cigarette wall 70 with flue rear wall 60 and between the two surrounds flue B, and the side proximity of rear wall lower header 50 arranges flue
Rear wall lower header 62, flue rear wall 60 include that the rear wall parts arranged vertically and lower end extend obliquely downwards and be connected to flue rear wall
The flue bottom wall 61 of lower header 62, cold water are switched into water header 80, have between header 80 of intaking and flue rear wall lower header 62
It intakes and is connected to communicating pipe 81.
Lower end as 60 integral part of flue rear wall naturally constitutes flue bottom wall 61, reduces welding workload and protects again
The integrality of flue B is demonstrate,proved, and flue bottom wall 61 is connected with water inlet header 80, cold water starts to carry out with high-temperature flue gas since then
Heat exchange.
Present small in the upper end of the burner hearth A of the preceding furnace wall 30 and rear furnace wall 10 and the composition of wing furnace wall 40 between the two
Big closing in shape and it is communicated to hot water effluent's header 20 down, it is in U tubulose, preceding 30 He of furnace wall that wherein hot water effluent's header 20 is whole
Furnace wall 10 is connected to the upside collection of hot water effluent's header 20 again afterwards after being connected to respectively with preceding furnace wall upper collecting chamber 31, rear furnace wall upper collecting chamber 14
On case 21, burner 110 is set at the stockhole of the closing of burner hearth A.
Above scheme is conducive to hot water effluent's header 20 and preceding furnace wall upper collecting chamber 31, rear furnace wall upper collecting chamber 14 and upside header
21 arrangement and connection, while the upper section of preceding furnace wall 30 and rear furnace wall 10 slightly bends arrangement and just constitutes the fire door of burner hearth, has
Burner 110 is installed conducive to arrangement.Flag formula heat exchange unit 63 is provided in the flue B, flag formula heat exchange unit 63 is by circuitous
The heat exchanger tube for returning arrangement is connected to be constituted on flue rear wall 60, and flag formula heat exchange unit 63 at least sets on the path direction of flue
One group is set, two flag formula heat exchange units 63 up and down shown in the accompanying drawings.Setting flag formula heat exchange unit 63 can make full use of flue B
Space complete cold water preliminary heat exchange, improve the thermal efficiency.
The upper end of flue rear wall 60 is connected with flue rear wall upper collecting chamber 64, flue rear wall upper collecting chamber 64 by down-comer 65 from
The decline collector 90 of boiler bottom is communicated under above, decline collector 90 is communicated to rear wall next part by decline communicating pipe 91
Case 50, decline collector 90 are connected to the lower end of wing furnace wall 40, the upper end of wing furnace wall 40 and upside header by downside header 100
21 connections.Merely illustrate wing furnace wall 40, the side cigarette wall 70 of side in attached drawing, side is not shown corresponding thereto, can open up in this way
Show the whole and internal basic structure of boiler.
Can be with by above scheme, cold water via flue rear wall lower header 62 enter flue bottom wall 61 and along flue rear wall 60 and
Flag formula heat exchange unit 63 continuously rises to flue rear wall upper collecting chamber 64, is then communicated to decline collector along the decline of down-comer 65
90, it realizes from bottom to top and the heat exchange of top-down forced circulation, the forced circulation carried out again later from bottom to top exchanges heat, into
One step improves the thermal efficiency.Hot water in decline collector 90 divides two-way to be respectively communicated with to downside header 100 and rear wall lower header
50, hot water is forced to rise after further heat exchange and temperature are met the requirements along preceding furnace wall 30, rear furnace wall 10 and wing furnace wall 40 reaches heat
Water is discharged header 20.
The downside header 100 is divided for header 100b and the two communication type on the downside of header 100a on the downside of burner hearth and flue
It is welded to connect, upside header 21 is divided for header 21b on the upside of header 21a on the upside of burner hearth and flue and the two communication type is welded to connect.
Above scheme is exactly that downside header 100 is specifically segmented into header 100a and the header 100b progress blanking of flue downside on the downside of burner hearth,
So as to separately machined burner hearth A, flue B.Similarly, upside header 21 is divided for header 21b on the upside of header 21a on the upside of burner hearth and flue,
And facilitate the connection of flue B main member, the reserved welding position of burner hearth A, flue B between the two is then imposed into welding i.e.
It can.
The both ends of flue rear wall upper collecting chamber 64 are fixedly connected with the non-interconnected formula of header 21b on the upside of the flue of respective side.In this way
It can guarantee the independence of flue rear wall upper collecting chamber 64 being reliably fixed and make its own water flow forced circulation again.
Generally speaking, the utility model has technical effect below, and for boiler since there is no drum, water capacity is small, pot
Furnace accumulation of heat is few, and starting and load responding are rapid；Boiler is vertical, and occupied area is few；It is basic simple, due to overhead burner
Without pre-buried air duct etc., civil engineering cost is few；Boiler uses Flag pattern heat surface, it is only necessary to replace the heating surface of broken parts, maintenance dimension
Shield is convenient；Overhead burner, fire box temperature field is uniform, is conducive to protect burner hearth.
Claims (8)
1. a kind of forced-circulation hot water boiler, it is characterised in that: surround the burner hearth A and flue B being vertically arranged, burner hearth A by furnace wall
Kept apart with flue B by rear furnace wall (10) and burner hearth A and flue B via the burner hearth being arranged below rear furnace wall (10) goes out smokestack
(11) it is interconnected, the furnace wall is membrane wall, and high temperature gas flow is extended downwardly from the top burner hearth A by below rear furnace wall (10)
Burner hearth goes out smokestack (11) and flow in flue B, then by being discharged after exchanging heat from bottom to top in flue B；Furnace wall of the cold water from flue B
Lower end introduces, and the water after preliminary heating is drawn from the upper end of the furnace wall of flue B and guided from top to bottom to the furnace wall of burner hearth A
End, to hot water effluent's header (20) of the upper end burner hearth A after further heating from bottom to top again later.
2. forced-circulation hot water boiler according to claim 1, it is characterised in that: the burner hearth A is by positioned opposite
Preceding furnace wall (30) and rear furnace wall (10) and wing furnace wall (40) between the two enclose the chamber being vertically arranged, rear furnace wall (10)
Lower section has rear wall lower header (50), and preceding furnace wall (30) includes that the front wall portion arranged vertically and lower end extend and are connected to obliquely downwards
The burner hearth bottom wall (32) of rear wall lower header (50), mode joint face water pipe interval below and bending phase on rear furnace wall (10)
Lower extend simultaneously is communicated to rear wall lower header (50), and the water pipe region that the interval and bending extend downwardly constitutes burner hearth
Smokestack (11) out.
3. forced-circulation hot water boiler according to claim 1 or 2, it is characterised in that: the rear furnace wall (10) and cigarette
Road rear wall (60) is arranged opposite to each other, and side Yan Bi (70) of the rear furnace wall (10) with flue rear wall (60) and between the two surrounds flue
The side proximity of B, rear wall lower header (50) arrange flue rear wall lower header (62), and flue rear wall (60) includes arranging vertically
Rear wall parts and lower end extend obliquely downwards and are connected to the flue bottom wall (61) of flue rear wall lower header (62), cold water be switched into
Water header (80), intaking header (80) to have between flue rear wall lower header (62) into water communicating pipe (81) is connected to.
4. forced-circulation hot water boiler according to claim 1 or 2, it is characterised in that: the preceding furnace wall (30) and after
The upper end of the burner hearth A of furnace wall (10) and wing furnace wall (40) composition between the two in up-small and down-big closing in shape and is communicated to heat
Water is discharged header (20), and wherein hot water effluent's header (20) is integrally in U tubulose, preceding furnace wall (30) and rear furnace wall (10) respectively with it is preceding
It is connected in the upside header (21) of hot water effluent's header (20) again after furnace wall upper collecting chamber (31), rear furnace wall upper collecting chamber (14) connection,
At the stockhole for the closing that burner (110) is set to burner hearth A.
5. forced-circulation hot water boiler according to claim 1 or 2, it is characterised in that: be provided with flag in the flue B
Formula heat exchange unit (63), flag formula heat exchange unit (63) are to be connected on flue rear wall (60) to constitute by the heat exchanger tube of detour arrangement,
Flag formula heat exchange unit (63) is at least arranged one group on the path direction of flue.
6. forced-circulation hot water boiler according to claim 1 or 2, it is characterised in that: the upper end of flue rear wall (60) with
Flue rear wall upper collecting chamber (64) is connected, and flue rear wall upper collecting chamber (64) is communicated to boiler bottom by down-comer (65) from top to bottom
Decline collector (90), decline collector (90) is communicated to rear wall lower header (50) by declining communicating pipe (91), declines collector
(90) lower end of wing furnace wall (40) is connected to by downside header (100), the upper end of wing furnace wall (40) is connected to upside header (21).
7. forced-circulation hot water boiler according to claim 6, it is characterised in that: the downside header (100) is divided into
Header (100b) and the two communication type welded connecting, upside header (21) are divided into furnace on the downside of header (100a) and flue on the downside of burner hearth
Header (21a) and flue upside header (21b) and the two communication type welded connecting on the upside of thorax.
8. forced-circulation hot water boiler according to claim 6, it is characterised in that: the both ends of flue rear wall upper collecting chamber (64)
It is fixedly connected with header (21b) non-interconnected formula on the upside of the flue of respective side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820406785.6U CN208282394U (en) | 2018-03-23 | 2018-03-23 | Forced-circulation hot water boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820406785.6U CN208282394U (en) | 2018-03-23 | 2018-03-23 | Forced-circulation hot water boiler |
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| Publication Number | Publication Date |
|---|---|
| CN208282394U true CN208282394U (en) | 2018-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820406785.6U Active CN208282394U (en) | 2018-03-23 | 2018-03-23 | Forced-circulation hot water boiler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332417A (en) * | 2018-03-23 | 2018-07-27 | 博瑞特热能设备股份有限公司 | Forced-circulation hot water boiler |
-
2018
- 2018-03-23 CN CN201820406785.6U patent/CN208282394U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108332417A (en) * | 2018-03-23 | 2018-07-27 | 博瑞特热能设备股份有限公司 | Forced-circulation hot water boiler |
| CN108332417B (en) * | 2018-03-23 | 2024-03-05 | 博瑞特热能设备股份有限公司 | Forced circulation hot water boiler |
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