CN205878614U - Water -cooled low nitrogen oxide heat exchanger - Google Patents
Water -cooled low nitrogen oxide heat exchanger Download PDFInfo
- Publication number
- CN205878614U CN205878614U CN201620465635.3U CN201620465635U CN205878614U CN 205878614 U CN205878614 U CN 205878614U CN 201620465635 U CN201620465635 U CN 201620465635U CN 205878614 U CN205878614 U CN 205878614U
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- water
- shell
- inner shell
- cooled low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 title abstract description 15
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 6
- 239000010949 copper Substances 0.000 abstract description 6
- 229910052802 copper Inorganic materials 0.000 abstract description 6
- 239000007789 gas Substances 0.000 abstract description 6
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 19
- 239000003546 flue gas Substances 0.000 description 19
- 239000008236 heating water Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000005855 radiation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 125000001183 hydrocarbyl group Chemical group 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The utility model discloses a water -cooled low nitrogen oxide heat exchanger, including shell, inner shell and heat exchanger, outer shell is in the inner shell is outside, it holds hydrothermal cavity to form between inner shell and the shell, the cavity forms a route, tube fin heat exchanger installs the upper portion of inner shell, the heat exchange of heat pipe with the route is connected. The utility model discloses a there is beneficial effect to be: have good heat transfer effect, reduce exhaust gas temperature effectively, poor aluminium alloy material also can reach very satisfied effect than copper even utilize the heat conductivity, and needn't use dear red copper material, can obviously reduce the material cost of heat exchanger, is favorable to the popularization and the popularization of heat exchanger.
Description
Technical field
This utility model relates to field of heat exchangers, and a kind of low nitrogen of the water-cooled for gas-heating water heater aoxidizes
Thing (Nox) heat exchanger.
Background technology
At present, the combustion heat-exchange system of existing gas-heating water heater is by fire row combustor, adiabatic combustor and wing
Sheet heat exchange of heat pipe three part forms, and when using this traditional structure pattern, fire row combustor is arranged under insulated combustion chamber
Face, the burning of combustion gas completes in adiabatic combustion indoor；The flue gas that burning produces moves across finned tube exchanger, water from bottom to top
Flowing through tubulation, absorb the heat in flue gas by fin and heat up, meanwhile, the temperature of flue gas declines, and reaches the mesh of heat exchange
's.But the combustion heat-exchange system structure of this traditional structure is complicated, mounting process is complicated, combustion chamber sealing poor performance, finned tube
Heat exchanger heat transfer area is little, and the thermal efficiency is on the low side, can cause substantial amounts of energy waste.
It addition, the combustor of existing gas-heating water heater is insulated combustion chamber, it is not provided with being heated in combustor position
Area, the flue-gas temperature that burning generates is high, and flue gas easily generates NOx in hot environment, and the pollutant causing discharge are higher.
The formation mechanism of fuel gas buring process nitrogen oxides is as follows:
The nitrogen oxides (NOx) that gas firing generates is mainly thermal NO x and Quick-type NOx.
Quick-type NOx is under the high temperature conditions, and the nitrogen in air generates with the ionic hydrocarbon group reaction in fuel
NOx.Quick-type NOx generation amount is little, typically constitutes from less than the 5% of total NOx generation amount.
Thermal NO x refers to that the N2 in air aoxidizes the nitrogen oxides of generation under the high temperature conditions, and its main component is NO.
Its reaction principle is as follows:
O+N2→NO+N N+O2→NO+O
The principal element affecting NO generation is that ignition temperature, oxygen concentration and flue gas are in the high-temperature region time of staying.
Thermal NO x drastically raises along with the rising of ignition temperature, NOx generation amount.Ignition temperature when about 1500 DEG C,
Temperature often raises l00 DEG C, and response speed will increase 6-7 times.
Utility model content
The purpose of this utility model is the defect existed for prior art described above, it is provided that a kind of rational in infrastructure, change
Hot device heat transfer area is big, good seal performance and the simple water cooled furnace of the mounting process water-cooled integrated with main heat exchanger
Formula low NOx (NOx) heat exchanger.
In order to realize above-mentioned utility model purpose, this utility model be the technical scheme is that a kind of low nitrogen of water-cooled
Oxide (NOx) heat exchanger, including shell, inner shell and heat exchanger, described casing is outside described inner shell, and described inner shell is with outer
Forming the chamber accommodating hot water between shell, described chamber forms a path；Described heat exchanger is arranged on the top of described inner shell；
Described heat exchanger is connected with described path.
Subsequent passes, anterior access, left surface path and right flank communication in described chamber be one described logical
Road, described path arranges water inlet and outlet.
Described inner shell and shell are that square, square inner shell surrounds a water-cooled combustor with shell assembling, described
Heat exchanger is arranged in described combustor and is connected as an entirety.
Arranging some dividing plates in described chamber, described next door coordinates with the outer wall of inner shell and the inwall of shell, forms labyrinth
The water stream channel of type, can extend current length.Described dividing plate is arranged on the outer wall of inner shell.
It is respectively provided with one or more dividing plate in described subsequent passes, anterior access, left surface path and right flank path,
Described dividing plate and outer casing inner wall cooperatively form the water stream channel of labyrinth type.
The dividing plate top of described inner shell is respectively provided with air vent, drains the air that corner is accumulated in time, it is to avoid inner shell local
Produce high temperature.
Described heat exchanger is described finned tube exchanger, is made up of some pipes and a number of fin, every wing
Equal perforate on sheet；Some horizontally arranged pipes pass in the hole from each fin, connect into an entirety.
Described fin can also be spirally wound on outer tube, forms spiral fin coil.
The pipe of heat exchanger is elliptical tube, it is also possible to for pipe；Fin can be square, it is also possible to is other shape.
At described outer casing underpart, fire row combustor is set.
Compared with prior art, of the present utility model provide the benefit that: there is excellent heat transfer effect, be effectively reduced
Exhaust gas temperature；Also the effect being satisfied with very much can be reached even with the aluminum alloy materials that thermal conductivity ratio copper is poor, high without using
Expensive red copper material, can obviously reduce the popularization of the material cost of heat exchanger, beneficially heat exchanger with universal.
Accompanying drawing explanation
Fig. 1 is the overall structure sketch 1 of this utility model a kind of water-cooled low NOx heat exchanger；
Fig. 2 is the overall structure sketch 2 of this utility model a kind of water-cooled low NOx heat exchanger；
Fig. 3 is the structure diagram of this utility model a kind of water-cooled low NOx heat exchanger；
Fig. 4 is the chamber structure sketch in this utility model a kind of water-cooled low NOx heat exchanger；
Fig. 5 is the partial structurtes sketch in this utility model a kind of water-cooled low NOx heat exchanger.
Detailed description of the invention
Below in conjunction with figure and embodiment the utility model is described in further detail.
A kind of water-cooled low NOx (NOx) heat exchanger, as shown in Fig. 2, Fig. 3 and Fig. 5, by shell 3, inner shell 4 and change
Hot device 5, water inlet 1 and outlet 2 form；It is outside that described shell 3 is enclosed within described inner shell 4, shape between described inner shell 4 and shell 3
Become to accommodate the chamber 7 of hot water；Described heat exchanger 5 is arranged on the top of described inner shell 4；The housing that described chamber 7 is formed at shell 3
It is a path that subsequent passes 72, anterior access 74, left surface path 73 and right flank path 71 around connects, wherein said
Heat exchanger 5 is connected with described path.Described water inlet 1 and described outlet 2 are connected with described path respectively and communicate.Described inner shell
4 and shell 3 be that square, square inner shell 4 surrounds a water-cooled combustor with shell 3 assembling, described heat exchanger 5 is arranged on
Described combustor is interior and is connected as an entirety.
As shown in Figure 4, some dividing plates 8, described next door 8 and the outer wall of inner shell 4 and shell 3 are set in described chamber 7
Inwall coordinates, and forms the water stream channel of labyrinth type, can extend current length.Wherein, described dividing plate 8 is arranged on outside inner shell 4
On wall.Heating water enters enclosure interior from the water inlet 1 on the housing right side, flows through successively: right side path, anterior access, the left side lead to
Road, finned tube exchanger 5, return left side path, go to subsequent passes, then from the outlet 2 of the outlet pipe of right side path
Flow out.Certainly, the order of current can adjust as required.
Described heat exchanger 5 is made up of some pipes and a number of fin, and every fin is equipped with perforate；Level
Some pipes of arrangement pass in the hole from each fin, connect into an entirety.Described fin can also be spirally wound on
Outer tube, forms spiral fin coil.Described pipe is elliptical tube, it is also possible to for pipe.Described fin can be square, it is possible to
To be other shape.
As it is shown in figure 1, fire row combustor 6 is positioned at the bottom of housing, the high temperature cigarette that combustion gas produces in fire row combustor 6 burning
Gas enters inner shell 4, and by radiant heat transfer mode, high-temperature flue gas passes to the heating water inside inner shell 4 partial heat.Flue gas court
Upper flowing, washes away the heat exchanger 5 being positioned at inner shell 4 top, carries out heat exchange with the heating water of Bottomhole pressure, makes flue-gas temperature drop
Low.
The described inner shell 4 subsequent passes 72, anterior access 74, left surface path 73 and 71 4, right flank path at place
On face, being respectively provided with one or more dividing plate 8, described dividing plate 8 and shell 3 inwall cooperatively form the water stream channel of labyrinth type.Water
Stream flows in the water stream channel of these labyrinth types, and to the eroding velocity of inner shell faster, cooling water is completely filled with housing to current, makes
Housing is adequately cooled, it is ensured that housing long-term safety is run；
Dividing plate 8 top of described inner shell 4 is respectively provided with air vent 81, drains the air that corner is accumulated in time, it is to avoid inner shell
Local produces high temperature.Dividing plate on described inner shell 48 and shell 3 cooperatively form the water stream channel of labyrinth type, and are positioned on inner shell 4
The pipe series connection of the finned tube exchanger 5 in portion becomes the pipeline of a connection.Heating water is full of whole enclosure interior, and at current
In passage, flowing, makes housing be adequately cooled.Heating water enters case type heat exchanger from the water inlet 1 being arranged at right front portion.
Current first flow through right front, pass through front side housing, are upwardly into finned tube exchanger 5 from left end, and current follow in pipe
Circulation moves, then is downwardly into rear side housing through left side, and heating water finally flows out from rear portion, right side.Heating water circulates in enclosure interior
Flowing, it is to avoid gas is in housing inner accumulated.
Preferably, described inner shell 4 surrounds a water-cooled combustor with shell 3, and heat exchanger 5 is arranged at the upper of inner shell 4
Portion, with inner shell 4 connecting as one structure, compact conformation, volume is little.Water-cooled combustor is by complete for combustion chamber high temperature district
Be enclosed in centre, the water of the flowing in housing absorbs the heat radiation of high-temperature flue gas, makes housing be adequately cooled.This structure
Can not only reduce and leak out, radiation loss can also be reduced.
Water-cooled combustor, the heat radiation of efficient absorption high-temperature flue gas, make flue-gas temperature reduce.The flue gas of lower temperature
Flow through finned tube exchanger, reduce the operating temperature of finned tube exchanger, make the working environment of finned tube exchanger be had
Effect is improved.Meanwhile, the radiation heating-surface of water-cooled on four sides, absorb the heat radiation of high-temperature flue gas, be substantially reduced flue-gas temperature.Due to instead
The temperature answered is greatly reduced, and the thermal NO that the N2 oxidation in flue gas generates substantially reduces, and makes the NOx of fume emission bright
Aobvious minimizing, can reach good environment protecting.
Described inner shell 4 absorbs the heat of flue gas by radiation heat transfer mode, and flue-gas temperature decreases, more upwards washes away wing
Sheet heat exchange of heat pipe carries out heat convection, and flue-gas temperature reduces further, can be effectively improved the thermal efficiency of equipment, reaches significantly to save
Can effect.
This utility model above-mentioned water-cooled shell heat exchanger has excellent heat transfer effect, is effectively reduced exhaust gas temperature.I.e.
Make to utilize the aluminum alloy materials of thermal conductivity ratio copper difference also can reach the effect being satisfied with very much, without using expensive red copper material
Material, can obviously reduce the popularization of the material cost of heat exchanger, beneficially heat exchanger with universal.
Although having described embodiment of the present utility model at this in detail, but this utility model being not limited to the most detailed
The concrete structure described and illustrate.Above-mentioned embodiment is not to restriction of the present utility model, common about technical field
Technical staff, in the case of without departing from spirit and scope of the present utility model, it is also possible to various changes can be made and modification, therefore
The technical scheme of all equivalents also should belong to category of the present utility model.
Claims (10)
1. a water-cooled low NOx heat exchanger, including shell (3), inner shell (4) and heat exchanger (5), it is characterised in that institute
State shell (3) and be enclosed within described inner shell (4) outside, between described inner shell (4) and shell (3), form the chamber (7) accommodating hot water, institute
State chamber and form a path；Described heat exchanger (5) is arranged on the top of described inner shell (4)；Described heat exchanger (5) is logical with described
Road connects.
A kind of water-cooled low NOx heat exchanger the most according to claim 1, it is characterised in that in described chamber (7)
Subsequent passes (72), anterior access (74), left surface path (73) and right flank path (71) to connect be a described path,
Water inlet (1) and outlet (2) are set on described path.
A kind of water-cooled low NOx heat exchanger the most according to claim 2, it is characterised in that described inner shell (4) and
Shell (3) is that square, square inner shell (4) surrounds a water-cooled combustor, described heat exchanger (5) with shell (3) assembling
It is arranged in described combustor and is connected as an entirety.
A kind of water-cooled low NOx heat exchanger the most according to claim 2, it is characterised in that set in described chamber 7
Putting some dividing plates (8), described dividing plate (8) coordinates with the outer wall of inner shell (4) and the inwall of shell (3), forms the current of labyrinth type
Passage.
A kind of water-cooled low NOx heat exchanger the most according to claim 3, it is characterised in that described subsequent passes
(72), it is respectively provided with one or more dividing plate (8) in anterior access (74), left surface path (73) and right flank path (71),
Described dividing plate (8) and shell (3) inwall cooperatively form the water stream channel of labyrinth type.
A kind of water-cooled low NOx heat exchanger the most according to claim 4, it is characterised in that described inner shell (4)
Dividing plate (8) top is respectively provided with air vent (81).
A kind of water-cooled low NOx heat exchanger the most according to claim 1, it is characterised in that described heat exchanger (5)
For finned tube exchanger, described finned tube exchanger is made up of some pipes and a number of fin, on every fin all
Perforate；Some horizontally arranged pipes pass in the hole from each fin, connect into an entirety.
A kind of water-cooled low NOx heat exchanger the most according to claim 7, it is characterised in that described fin is spiral
It is wrapped in outer tube and forms spiral fin coil.
A kind of water-cooled low NOx heat exchanger the most according to claim 7, it is characterised in that described pipe is oval
Pipe or pipe.
A kind of water-cooled low NOx heat exchanger the most according to claim 1, it is characterised in that in described shell (3)
Bottom arranges fire row combustor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465635.3U CN205878614U (en) | 2016-05-19 | 2016-05-19 | Water -cooled low nitrogen oxide heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620465635.3U CN205878614U (en) | 2016-05-19 | 2016-05-19 | Water -cooled low nitrogen oxide heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205878614U true CN205878614U (en) | 2017-01-11 |
Family
ID=57687255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620465635.3U Expired - Fee Related CN205878614U (en) | 2016-05-19 | 2016-05-19 | Water -cooled low nitrogen oxide heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205878614U (en) |
-
2016
- 2016-05-19 CN CN201620465635.3U patent/CN205878614U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 528325 Guangdong, Shunde, Ronggui hi tech Industrial Zone, Foshan Huamei Road, No. 1 Patentee after: GUANGDONG SHIKAR BOILER Co.,Ltd. Address before: 528325 Guangdong, Shunde, Ronggui hi tech Industrial Zone, Foshan Huamei Road, No. 1 Patentee before: FOSHAN SHIKAR THERMAL EQUIPMENT CO.,LTD. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 |