CN201476303U - Flue gas heat-exchange unit - Google Patents
Flue gas heat-exchange unit Download PDFInfo
- Publication number
- CN201476303U CN201476303U CN 200920191691 CN200920191691U CN201476303U CN 201476303 U CN201476303 U CN 201476303U CN 200920191691 CN200920191691 CN 200920191691 CN 200920191691 U CN200920191691 U CN 200920191691U CN 201476303 U CN201476303 U CN 201476303U
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- China
- Prior art keywords
- flue gas
- heat
- heat exchange
- tube
- gas heat
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- 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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
A flue gas heat-exchange unit comprises a case, two tube plates, two tube headers and a plurality of heat-transfer tubes, wherein the two tube plates are respectively arranged on the two ends of the case, the two tube headers are respectively arranged on the outer sides of the tube plates, the heat-transfer tubes are arranged in the case and the two ends thereof are fixed on the tube plates, and the tube header is provided with a drain valve for draining the condensed water in the flue gas heat-exchange unit. In the utility model, since the drain valve is added on the tube header, the flue gas condensed water in the flue gas heat-exchange unit can be effectively drained, the heat-exchange efficiency is improved, and the direct fired heater generating flue gas can be also protected.
Description
Technical field
The utility model relates to heat transmission equipment, carries out the flue gas heat exchange device of heat exchange more specifically to a kind of cigarette G﹠W.
Background technology
Shell-and-tube heat exchanger is the heat exchanger that carries out heat exchange between the cold and hot fluid by tube wall, and Fig. 1 shows the structure of existing a kind of shell-and-tube heat exchanger.Referring to Fig. 1, shell-and-tube heat exchanger comprises housing 81, tube sheet 82, bobbin carriage 83 and comprises the tube bank of a plurality of heat-transfer pipes 84, and housing 81 is a cylindrical shape, and tube bank is equipped with in inside, the tube bank two ends are fixed on the tube sheet 82, and two bobbin carriages 83 are installed in the outside of two tube sheets 82 respectively.On housing 81, be provided with adapter 1 and take over 2 812, on two bobbin carriages 83, be provided with adapter 3 813 and adapter 4 814 respectively.On the one hand, cold fluid enters housing 81 from taking over 1, flows between the outer wall of housing 81 inwalls and heat-transfer pipe 84, flows out housing 81 from taking over 2 812 at last; On the other hand, hot fluid is from taking over 3 813 bobbin carriages 83 that enter an end, and the bobbin carriage from an end enters heat-transfer pipe 84 then, enters the bobbin carriage of the other end after flowing in heat-transfer pipe 84, flows out from taking over 4 814 at last.Like this, cold and hot fluid tube wall by heat-transfer pipe 84 in housing 81 carries out heat exchange.In order to improve the individual heat transfer coefficient of heat-transfer pipe outer fluid, some baffle plates 85 are installed in housing 81 usually.Baffle plate 85 can improve shell-side fluid speed, force fluid in accordance with regulations distance repeatedly laterally by the tube bank, the enhance fluid turbulent extent.
Hotel, market, office building or office building etc. are opened air-conditioning for a long time, and employing is used the direct combustion machine of natural gas, diesel oil equal energy source to freeze or made and warm up usually, and the direct combustion captain phase is in service, produces a large amount of high-temperature flue gas.This flue gas directly is discharged in the atmosphere, not only contaminated environment, improve ambient temperature, increase the weight of global greenhouse effect, but also wasted the heat in the flue gas.If can utilize the heat of this high-temperature flue gas to heat domestic water, not only can reduce environmental pollution, but also turn waste into wealth, energy savings.For the utilization of these high-temperature flue gas, can use existing shell-and-tube heat exchanger as shown in Figure 1 to carry out flue gas and hydrothermal exchange, heat the domestic hot-water with the heat that utilizes flue gas.Flue gas enters the bobbin carriage of an end from adapter, flows through the bobbin carriage that enters the other end behind the heat-transfer pipe.Cold water enters housing from an adapter on the housing, and hot water flows out housing from another adapter on the housing.Because flue gas is bigger in the temperature difference that flows into end and outflow end, can reach more than 70 ℃, and the water temperature difference of flue gas and heat exchange with it is also very big, flue gas is met the rapid shrinkage of cold meeting and is produced condensed water.The condensed water that long-time running produces accumulates in the bottom of bobbin carriage and heat exchanger tube, has reduced the area of the exhaust uptake of heat exchange area and direct combustion machine on the one hand, even can stop up heat exchanger tube; Along with the increase of condensation water quantity can form in the burner that condensed water blows back into the direct combustion machine, cause equipment fault easily on the other hand.
Summary of the invention
The purpose of this utility model is that existing shell-and-tube heat exchanger is improved, and proposes a kind of flue gas heat exchange device that flue gas condensing water in the heat exchanger is discharged.
To achieve these goals, the utility model proposes a kind of flue gas heat exchange device, it comprises housing, tube sheet, bobbin carriage and a plurality of heat-transfer pipe, tube sheet is two and is installed in the housing two ends respectively, bobbin carriage is two and is installed in the outside of each tube sheet respectively, heat-transfer pipe in housing and two ends be fixed on the tube sheet, on bobbin carriage, be provided with and be used for draining valve that the condensed water of flue gas heat exchange device is discharged.
Obviously, compare with existing shell-and-tube heat exchanger, the utility model since on bobbin carriage addition draining valve, can be effectively the flue gas condensing water in the flue gas heat exchange device be discharged, improve heat exchange efficiency, simultaneously the direct combustion machine that produces flue gas is played a protective role.
Description of drawings
Fig. 1 is the structure chart of existing shell-and-tube heat exchanger;
Fig. 2 is the schematic cross sectional views of the utility model flue gas heat exchange device.
The utility model is described in further detail below in conjunction with drawings and Examples.
The specific embodiment
Referring to Fig. 2, the flue gas heat exchange device that the utility model provides comprises columnar housing 1, tube sheet 21,22 is installed in the two ends of housing 1 respectively, a plurality of heat-transfer pipes 4 in housing 1 and two ends be fixed on the tube sheet by expanding joint method, bobbin carriage 31,32 is installed in the outside of tube sheet 21,22 respectively.On housing 1, be provided with adapter 1 and take over 2 12, on bobbin carriage 31,32, be provided with adapter 3 310 respectively and take over 4 320.Flue gas enters bobbin carriage 31 from taking over 3 310, and adapter four 320 outflow heat exchangers of back from bobbin carriage 32 flow in heat-transfer pipe 4.Cold water enters housing 1 from taking over 1, and tube wall and flue gas by heat-transfer pipe 4 in housing 1 carry out heat exchange, flows out housings 1 from taking over 2 12 after having absorbed the part heat of flue gas.
Since very big in the front end and the rear end flue gas temperature difference of heat exchanger, can reach more than 70 ℃; And flue gas and to carry out the temperature difference of water of heat exchange with it also very big, flue gas reaches as high as about 158 ℃ in the temperature of entrance point, and the domestic hot-water's temperature in the circulation has only 40～50 ℃, and flue gas is met the rapid shrinkage of cold meeting and is produced the part condensed water.Because the condensed water that long-time running produces amasss in heat exchanger inside, can be deposited on the bottom of bobbin carriage and heat exchanger tube in order preventing on the one hand, to stop up heat exchanger tube, reduce the exhaust uptake area of heat exchange area and direct combustion machine, reduce refrigerating efficiency; Along with the increase of condensation water quantity can form in the burner that condensed water flows to the direct combustion machine, cause equipment fault easily on the other hand.Therefore, on casing 31,32, be provided with DN25 draining valve 51,52 respectively, so that the flue gas condensing water that accumulates in the flue gas heat exchange device is discharged.Preferably, the position of draining valve 51,52 is arranged so that when the flue gas heat exchange device is installed and used draining valve 51,52 is positioned at the lowest point place of bobbin carriage, better the flue gas condensing water that accumulates in the flue gas heat exchange device is discharged.
In order fully to absorb the heat of flue gas, heat-transfer pipe 4 adopts the higher T2 copper tube of heat transfer efficiency.Because flue-gas temperature reaches as high as about 160 ℃, all adopt expanded joint between heat exchanger tube and the tube sheet.Because the flue gas heat exchange device is to be used for the domestic hot-water in production guest room, considers the needs to customer service, the domestic hot-water must not have yellow stain, rust stain, so housing 1 all adopts the SUS304 stainless steels, thereby guarantees domestic hot-water's quality.
In order fully to absorb the heat of flue gas, three SUS304 stop planks in housing 1, have balancedly been added, play the fixedly effect of heat-transfer pipe on the one hand, mainly be in order to increase domestic hot-water's stream course on the other hand, prolong the time of staying of water in housing 1, thereby absorb flue gas heat more fully.Between housing 1 and casing 31,32, adopt the flange stainless steel bolt to be connected, be easy for installation and maintenance.On housing 1, also be provided with safety valve 13, be used for the steam of housing 1 is discharged, to reduce the pressure in the housing 1.
The utility model is widely used in enterprise, market, office building, office building and hotel etc., come productive life hot water or auxiliary heating domestic hot-water as long as the flue gas heat exchange device that the direct combustion machine series of using natural gas, diesel oil equal energy source can both use the utility model to provide is provided in our unit, especially opened the best especially energy-conserving product of large-scale high star hotel of air-conditioning in 24 hours for long-term needs, can reduce the energy consumption cost of our unit greatly, cut down expenses.
Claims (6)
1. flue gas heat exchange device, comprise housing, tube sheet, bobbin carriage and a plurality of heat-transfer pipe, described tube sheet is two and is installed in the two ends of described housing respectively, described bobbin carriage is two and is installed in the outside of each described tube sheet respectively, described heat-transfer pipe in described housing and two ends be fixed on the described tube sheet, it is characterized in that, on described bobbin carriage, be provided with and be used for the draining valve of discharging at the condensed water of described flue gas heat exchange device.
2. flue gas heat exchange device according to claim 1 is characterized in that, described draining valve is positioned at the lowest point place of described bobbin carriage when described flue gas heat exchange device is installed and used.
3. flue gas heat exchange device according to claim 2 is characterized in that, described housing is the stainless steel cylinder.
4. flue gas heat exchange device according to claim 3 is characterized in that, described heat-transfer pipe is a copper tube.
5. flue gas heat exchange device according to claim 4 is characterized in that, is provided with to be used for the safety valve that the pressure with described housing reduces on described housing.
6. flue gas heat exchange device according to claim 5 is characterized in that described heat-transfer pipe is fixed on the described tube sheet by expanding joint method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920191691 CN201476303U (en) | 2009-08-17 | 2009-08-17 | Flue gas heat-exchange unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920191691 CN201476303U (en) | 2009-08-17 | 2009-08-17 | Flue gas heat-exchange unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201476303U true CN201476303U (en) | 2010-05-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920191691 Expired - Fee Related CN201476303U (en) | 2009-08-17 | 2009-08-17 | Flue gas heat-exchange unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201476303U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615911A (en) * | 2013-11-26 | 2014-03-05 | 中冶南方工程技术有限公司 | Natural cooler for steam exhaust system of continuous casting machine |
| CN103866070A (en) * | 2014-04-09 | 2014-06-18 | 陕西三沅重工发展股份有限公司 | Low-grade waste heat recycling system and method for flue gas of hot blast stove |
| CN104791824A (en) * | 2015-05-05 | 2015-07-22 | 上海瀚显空调节能技术有限公司 | Energy-saving smoke heat recycling device for vertical smoke pipe |
| CN111351064A (en) * | 2020-03-13 | 2020-06-30 | 江苏峰业科技环保集团股份有限公司 | Cooling and dehumidifying flue gas whitening system |
| CN114593617A (en) * | 2022-03-16 | 2022-06-07 | 南京宇清环境科技有限公司 | High-efficiency tube heat exchanger based on low-temperature dew point corrosion coating and manufacturing process thereof |
-
2009
- 2009-08-17 CN CN 200920191691 patent/CN201476303U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615911A (en) * | 2013-11-26 | 2014-03-05 | 中冶南方工程技术有限公司 | Natural cooler for steam exhaust system of continuous casting machine |
| CN103866070A (en) * | 2014-04-09 | 2014-06-18 | 陕西三沅重工发展股份有限公司 | Low-grade waste heat recycling system and method for flue gas of hot blast stove |
| CN104791824A (en) * | 2015-05-05 | 2015-07-22 | 上海瀚显空调节能技术有限公司 | Energy-saving smoke heat recycling device for vertical smoke pipe |
| CN104791824B (en) * | 2015-05-05 | 2017-07-21 | 上海瀚显空调节能技术有限公司 | A kind of flue gas heat recovery energy saver for vertical smoke tube |
| CN111351064A (en) * | 2020-03-13 | 2020-06-30 | 江苏峰业科技环保集团股份有限公司 | Cooling and dehumidifying flue gas whitening system |
| CN114593617A (en) * | 2022-03-16 | 2022-06-07 | 南京宇清环境科技有限公司 | High-efficiency tube heat exchanger based on low-temperature dew point corrosion coating and manufacturing process thereof |
| CN114593617B (en) * | 2022-03-16 | 2023-06-30 | 南京宇清环境科技有限公司 | High-efficiency tube heat exchanger based on low-temperature dew point corrosion coating and manufacturing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20130817 |