CN207316970U - A kind of U-shaped heat exchanger - Google Patents
A kind of U-shaped heat exchanger Download PDFInfo
- Publication number
- CN207316970U CN207316970U CN201721304741.4U CN201721304741U CN207316970U CN 207316970 U CN207316970 U CN 207316970U CN 201721304741 U CN201721304741 U CN 201721304741U CN 207316970 U CN207316970 U CN 207316970U
- Authority
- CN
- China
- Prior art keywords
- polygon
- backhaul
- return
- tube
- helix tube
- 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
Links
- 239000007789 gas Substances 0.000 claims abstract description 34
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000003546 flue gas Substances 0.000 claims abstract description 32
- 239000000779 smoke Substances 0.000 claims abstract description 19
- 230000008676 import Effects 0.000 claims description 7
- 238000002955 isolation Methods 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 2
- 235000019504 cigarettes Nutrition 0.000 claims 1
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a kind of U-shaped heat exchanger, is related to a kind of heated surface at the end of boiler technical field.The utility model includes the polygon spiral tube structure of a backhaul, the polygon spiral tube structure of two return and flue gas header, the polygon spiral tube structure of one backhaul includes the polygon helix tube of a backhaul, one backhaul smoke outlet tube plate and a backhaul flue gas inlet tube plate, one backhaul smoke outlet tube plate is arranged on the lower end of the polygon helix tube of a backhaul, one backhaul flue gas inlet tube plate is arranged on the upper end of the polygon helix tube of a backhaul, the polygon spiral tube structure of two return includes the polygon helix tube of two return, two return exhanst gas outlet tube sheet and two return gas inlet tube sheet, two return exhanst gas outlet tube sheet is arranged on the upper end of the polygon helix tube of two return, two return gas inlet tube sheet is arranged on the lower end of the polygon helix tube of two return, the polygon helix tube of one backhaul is connected with the polygon helix tube of two return by flue gas header.The utility model improves air preheating temperature, reduces exhaust gas temperature, realizes energy-saving and emission-reduction.
Description
Technical field
A kind of heated surface at the end of boiler technical field is the utility model is related to, more particularly to a kind of U-shaped heat exchanger.
Background technology
Coefficient of Tube-type Air Preheater in Boiler of the prior art mainly has, and thin-wall steel tube is generally more using light pipe, in order to increase
Strong heat exchange efficiency, some are using bellows, bellows tube, screwed pipe etc., still, the ripple of these pipes, node, screwed ring at present
It is easy to fill up the raw crock of knot by the solid particle in flue gas to groove, and reduction heat exchange area is drawn out to outside groove, it is difficult to
Realize heat exchange efficiency during design, increase the maintenance capacity of equipment.
Utility model content
Shortcoming present in regarding to the issue above, the utility model provide a kind of U-shaped heat exchanger, utilize it polygon
Helix tube makes the fluid spiral shape in pipe ensure design heat exchange effect at a high speed by destroying or being thinned the boundary layer of fluid and tube wall
Rate, flue gas uses countercurrent flow with the air for needing to preheat, and then improves air preheating temperature, reduces exhaust gas temperature, real
Existing energy-saving and emission-reduction.
To solve the above-mentioned problems, the utility model provides a kind of U-shaped heat exchanger, including shell, the left end of the shell
Boiler smoke import is provided with, the right end of the shell is provided with exhanst gas outlet after heat exchange, wherein, the shell includes a backhaul
The polygon spiral tube structure of polygon spiral tube structure, two return and flue gas header, the polygon spiral tube structure of a backhaul include one
The polygon helix tube of backhaul, a backhaul smoke outlet tube plate and a backhaul flue gas inlet tube plate, the backhaul smoke outlet tube plate
The lower end of the polygon helix tube of a backhaul is arranged on, the backhaul flue gas inlet tube plate is arranged on the polygon spiral shell of a backhaul
The upper end of coil, the polygon spiral tube structure of two return include the polygon helix tube of two return, two return exhanst gas outlet tube sheet and
Two return gas inlet tube sheet, the two return exhanst gas outlet tube sheet are arranged on the upper end of the polygon helix tube of the two return, institute
State the lower end that two return gas inlet tube sheet is arranged on the polygon helix tube of the two return, the polygon helix tube of the backhaul and institute
The polygon helix tube of two return is stated to connect by the flue gas header.
Preferably, cold-air duct is provided with the shell, the left end and right end of the cold-air duct are set respectively
There are hot-blast outlet and inlet of cold air, helix tube polygon with a backhaul, the two return are more respectively for the cold-air duct
The bobbin carriage body wall of side helix tube connects.
Preferably, air baffle is provided between the polygon helix tube of a backhaul and the polygon helix tube of the two return,
The upper end of the air baffle is provided with flue isolation plate, and exhanst gas outlet passes through after the boiler smoke import and the heat exchange
The flue isolation plate segmentation is tightly connected.
Preferably, it is provided with air duct between the air baffle and the flue gas header.
Compared with prior art, the utility model has the following advantages：
1st, polygon helix tube is installed between two tube sheet of the utility model, when polygon helix tube is connected with tube sheet for expanded joint this
Sample can reduce production cost；It can also be welded again after first expanded joint.
2nd, the fluid spiral shape in pipe is made at a high speed by destruction or the border of thinned fluid and tube wall using polygon helix tube
Layer, improves heat exchange efficiency.
3rd, the fluid spiral shape in pipe is extended the operation length with length light pipe using polygon helix tube, improve heat exchange effect
Rate.
4th, tube wall is without circumferential groove, so without crock and residue caused by circumferential groove.
5th, the air that flue gas and needs preheat uses countercurrent flow, improves air preheating temperature, reduces exhaust gas temperature,
Realize energy-saving and emission-reduction.
6th, the air that flue gas and needs preheat is exchanged heat using two return, improves air preheating temperature, reduces exhaust gas temperature, real
Existing energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is the example structure schematic diagram of the utility model；
Fig. 2 is structure diagram at the embodiment A-A of the utility model.
1 flue gas header, 2 one backhaul smoke outlet tube plates, 3 shells, the polygon helix tube of 4 one backhauls, 5 one backhaul gas inlets
Exhanst gas outlet, 10 inlet of cold airs, 11 2 after tube sheet, 6 hot-blast outlets, 7 boiler smoke imports, 8 flues isolation plate, 9 heat exchange
Backhaul smoke outlet tube plate, the polygon helix tube of 12 two returns, 13 air baffles, 14 air ducts, 15 two return flue gas inlet tubes
Plate, 16 bobbin carriage body walls.
Embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with the accompanying drawings with example
The utility model is described in further detail, but example is not as the restriction to the utility model.
As depicted in figs. 1 and 2, the embodiment of the utility model includes a flue gas header 1, backhaul smoke outlet tube plate 2, outer
Shell 3, the polygon helix tube 4 of a backhaul, a backhaul flue gas inlet tube plate 5, hot-blast outlet 6, boiler smoke import 7, flue isolation are inserted
Exhanst gas outlet 9, inlet of cold air 10, two return exhanst gas outlet tube sheet 11, the polygon helix tube 12 of two return, air after plate 8, heat exchange
Partition plate 13, air duct 14, two return gas inlet tube sheet 15, bobbin carriage body wall 16.
In the present embodiment, the both ends of the polygon helix tube 4 of a backhaul and the polygon helix tube 12 of two return once journey flue gas into
Mouth tube sheet 5, a backhaul smoke outlet tube plate 2, two return gas inlet tube sheet 15, two return exhanst gas outlet tube sheet 11, a backhaul
The polygon polygon helix tube 12 of helix tube 4 and two return takes expanded joint to be connected with both sides tube sheet, can also it is first swollen after weld again, one
There is air baffle 13 between the polygon helix tube 4 of backhaul and the polygon helix tube 12 of two return, 13 lower part of air baffle is left air and led to
There is flue to completely cut off plate 8 between exhanst gas outlet 9 after road 14, boiler smoke import 7 and heat exchange.
In the present embodiment, the heat exchange course of work is as follows：Boiler tail discharge the flue gas with higher temperature from boiler
The backhaul flue gas inlet tube of gas inlet 7 to one plate 5 enters in the polygon helix tube 4 of a backhaul, and helically state flows to heat smoke in pipe
One backhaul smoke outlet tube plate 2 enters two return gas inlet tube sheet 15 to flue gas header 1, then by flue gas header 1, enters back into two
In the polygon helix tube 12 of backhaul manages, having reduced the flue gas of temperature through backhaul heat exchange, helically state is flowed to by two return flue gas
Outlet tube sheet 11 be expelled to heat exchange after exhanst gas outlet 9 discharge, it is necessary to cold air heat by inlet of cold air 10 entrance with through one
Backhaul heat exchange has reduced polygon 12 outer wall of helix tube of two return of temperature flue gas and low-temperature flue gas exchanges heat, after heat exchange, through sky
The outer wall heat exchange of the polygon helix tube 4 of 14 and one backhaul of gas passage, the air to exchange heat through the polygon helix tube 12 of two return carry out again
To hot-blast outlet 6 after polygon 4 outer wall of the helix tube heat exchange of a backhaul of relatively-high temperature, flue gas and air reverse heat-exchange process are completed,
The air themperature of boiler combustion is improved, heat exchange efficiency is effectively improved by polygon spiral tube air preheater, reduces smoke evacuation heat
Loss of energy saves the energy.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (4)
1. a kind of U-shaped heat exchanger, including shell, the left end of the shell is provided with boiler smoke import, the right end of the shell
It is provided with exhanst gas outlet after exchanging heat, it is characterised in that the shell includes the polygon spiral tube structure of a backhaul, the polygon spiral shell of two return
Coil configuration and flue gas header, the polygon spiral tube structure of a backhaul includes the polygon helix tube of a backhaul, a backhaul flue gas goes out
Mouth tube sheet and a backhaul flue gas inlet tube plate, the backhaul smoke outlet tube plate are arranged on the polygon helix tube of a backhaul
Lower end, the backhaul flue gas inlet tube plate are arranged on the upper end of the polygon helix tube of a backhaul, the polygon spiral shell of two return
Coil configuration includes the polygon helix tube of two return, two return exhanst gas outlet tube sheet and two return gas inlet tube sheet, described two times
Journey exhanst gas outlet tube sheet is arranged on the upper end of the polygon helix tube of the two return, and the two return gas inlet tube sheet is arranged on institute
The lower end of the polygon helix tube of two return is stated, the polygon helix tube of a backhaul passes through the cigarette with the polygon helix tube of the two return
Gas header connects.
2. U-shaped heat exchanger as claimed in claim 1, it is characterised in that cold-air duct is provided with the shell, it is described cold
The left end and right end of air pipeline are respectively arranged with hot-blast outlet and inlet of cold air, and the cold-air duct is respectively with described one
The polygon helix tube of backhaul, the bobbin carriage body wall of the polygon helix tube of the two return connect.
3. U-shaped heat exchanger as claimed in claim 2, it is characterised in that the polygon helix tube of a backhaul and the two return
Air baffle is provided between polygon helix tube, the upper end of the air baffle is provided with flue isolation plate, the boiler smoke
Exhanst gas outlet completely cuts off plate segmentation by the flue and is tightly connected after gas import and the heat exchange.
4. U-shaped heat exchanger as claimed in claim 3, it is characterised in that set between the air baffle and the flue gas header
It is equipped with air duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304741.4U CN207316970U (en) | 2017-10-09 | 2017-10-09 | A kind of U-shaped heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721304741.4U CN207316970U (en) | 2017-10-09 | 2017-10-09 | A kind of U-shaped heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316970U true CN207316970U (en) | 2018-05-04 |
Family
ID=62429742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721304741.4U Expired - Fee Related CN207316970U (en) | 2017-10-09 | 2017-10-09 | A kind of U-shaped heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316970U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536543A (en) * | 2020-05-13 | 2020-08-14 | 哈电发电设备国家工程研究中心有限公司 | A flue gas cooler applied to a mobile medical waste treatment system |
| CN112682816A (en) * | 2020-12-29 | 2021-04-20 | 连云港虹洋热电有限公司 | Coal-fired boiler tail gas membrane filtration oxygen enrichment recycling device and using method |
| CN113587134A (en) * | 2021-09-02 | 2021-11-02 | 青岛德固特节能装备股份有限公司 | Air preheater |
| CN115247798A (en) * | 2022-07-20 | 2022-10-28 | 北京基亚特环保科技有限公司 | Waste incineration flue gas treatment device with waste heat utilization mechanism |
-
2017
- 2017-10-09 CN CN201721304741.4U patent/CN207316970U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111536543A (en) * | 2020-05-13 | 2020-08-14 | 哈电发电设备国家工程研究中心有限公司 | A flue gas cooler applied to a mobile medical waste treatment system |
| CN112682816A (en) * | 2020-12-29 | 2021-04-20 | 连云港虹洋热电有限公司 | Coal-fired boiler tail gas membrane filtration oxygen enrichment recycling device and using method |
| CN113587134A (en) * | 2021-09-02 | 2021-11-02 | 青岛德固特节能装备股份有限公司 | Air preheater |
| CN115247798A (en) * | 2022-07-20 | 2022-10-28 | 北京基亚特环保科技有限公司 | Waste incineration flue gas treatment device with waste heat utilization mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| 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: 20180504 Termination date: 20201009 |