CN212512628U - Serial-type aqueous vapor heat exchanger - Google Patents
Serial-type aqueous vapor heat exchanger Download PDFInfo
- Publication number
- CN212512628U CN212512628U CN202021009747.0U CN202021009747U CN212512628U CN 212512628 U CN212512628 U CN 212512628U CN 202021009747 U CN202021009747 U CN 202021009747U CN 212512628 U CN212512628 U CN 212512628U
- Authority
- CN
- China
- Prior art keywords
- heat exchange
- water
- tube
- heat exchanger
- heat
- 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.)
- Active
Links
Images
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a serial-type aqueous vapor heat exchanger, including a plurality of heat exchange tubes of box and the heat exchange piping system of establishing ties and forming by a plurality of water jacket pipes. The gas-water heat exchanger can be applied to the field of flue gas cooling, namely a low-temperature economizer, and is also applicable to the field of heat exchange of various gases and liquids, namely a gas-water heat exchanger. The water sleeve series structure has the advantages that the flow velocity of water in the sleeve is a fixed value, the flow velocity of the water is not changed, and only the flow direction is changed, so that the flow resistance of a medium in the heat exchanger is reduced, the energy consumption of the operation auxiliary equipment is reduced, and the cooling medium and hot gas form pure countercurrent, so that the overall operation economy of the heat exchanger is improved. In addition, each drainage sleeve pipe is provided with at least one section of arc-shaped baffling pipe, and the cooling medium flows back up and down in the baffling pipe, so that the heat exchange is more uniform.
Description
Technical Field
The utility model relates to a indirect heating equipment field especially relates to a serial-type aqueous vapor heat exchanger.
Background
Industrial boilers and kilns can generate a large amount of flue gas in the production process, wherein the flue gas contains sulfur dioxide forming acid rain and carbon dioxide forming greenhouse effect, and most of the flue gas is from the emission of industrial flue gas, and the flue gas emitted from industrial production is the largest source of environmental pollutants. In recent years, the environmental deterioration of China has attracted wide attention in China and abroad, and a large amount of manpower and material resources are invested for environmental governance countries.
The design temperature of the exhaust smoke of the thermal power generation boiler is generally 140 ℃, and the exhaust smoke temperature of other boilers can reach 180 ℃. Because the temperature required by the flue gas desulfurization temperature and the desulfurization device equipped in the boiler is lower than 80 ℃, in the prior art, in order to reduce the flue gas temperature to meet the desulfurization requirement, a coal economizer is usually arranged at the tail end of equipment for generating heat by burning fuel and is used for absorbing heat in the flue gas and applying the heat to reduce the exhaust gas temperature of the flue gas, in addition, the energy is saved, and the efficiency is improved.
The utility model discloses a bushing type heat pipe low temperature economizer is disclosed in chinese utility model patent ZL201621471918.5, in its structure, many water jacket pipe's both ends are parallelly connected on lower communicating pipe and last communicating pipe, among the water jacket pipe parallel structure, the water jacket pipe is the maximum point of discharge with last communicating pipe and lower communicating pipe confluence, form rivers jam point, and every row of heat exchange tube all has this jam position, it is on the high side to form local operating resistance, consequently, lead to the heat exchanger whole operating resistance on the high side, medium flow resistance is big in the heat exchanger, increase the operation auxiliary assembly energy consumption, and water jacket pipe parallel structure, cooling medium forms the cross flow with the hot gas, heat transfer difference in temperature calculation method is triangle T ═ triangle TINF, difference in temperature correction coefficient F < 1 (can be looked into by the cross flow F value picture that cold and hot fluid all does not mix), lead to heat exchanger operation economic nature poor.
In addition, the water sleeve parallel structure, the replacement of a single heat pipe needs to isolate and replace the heat pipe row, and the parallel pipe row forms a unified whole with a plurality of single heat pipes, so that the maintenance is inconvenient and the cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a serial-type aqueous vapor heat exchanger that can reduce heat exchanger running resistance, avoid the heat transfer pipeline to block up, and improve heat exchange efficiency is provided.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a tandem water-gas heat exchanger, comprising:
the heat exchange device comprises a box body, a heat collecting pipe and a heat collecting pipe, wherein the inner cavity of the box body is divided by a horizontally fixed composite pipe plate, a heat exchange cavity is formed at the upper part of the inner cavity of the box body, and a heat collecting cavity is formed at the lower part of the inner cavity of the box body;
the heat exchange tubes are arranged in the box body in an array mode, two ends of each heat exchange tube are sealed, working media are filled in the heat exchange tubes, the heat exchange tubes vertically penetrate through the composite tube plate and are fixedly sealed with the tube plate, evaporation sections are formed at the lower portions of the heat exchange tubes, and condensation sections are formed at the upper portions of the heat exchange tubes; and
the condensation section of each heat exchange tube is arranged in a coaxial sleeved mode, a sealed heat exchange gap is formed between each water sleeve and the heat exchange tube, every two adjacent rows of water sleeve tubes are communicated through a through tube, each row of through tubes at least comprise a curved baffling tube section, the baffling tube sections are upwards protruded, two ends of each baffling tube section are communicated with the tops of the corresponding two water sleeves, the multiple rows of water sleeves are connected in series end to form a heat exchange tube system, and two ends of the heat exchange tube system are respectively provided with a refrigerant inlet and a refrigerant outlet.
The composite tube plate comprises an upper tube plate and a lower tube plate which are arranged in parallel, and sealing filler is filled between the upper tube plate and the lower tube plate.
The technical scheme is that a positioning ring is fixed on the lower portion of the condensation section of the heat exchange tube, the outer diameter of the positioning ring is matched with the inner diameter of the water sleeve, and the lower end of the water sleeve is fixedly sleeved with the positioning ring.
The technical scheme is that the through pipe is detachably connected with the corresponding water sleeve, and the lower end of the water sleeve is detachably connected with the positioning ring.
The further technical scheme is that the heat exchange tube comprises a base tube and an anticorrosive coating fixed on the outer surface of the base tube.
The further technical proposal is that the anti-corrosion layer is an organic glass layer or a fluorine coating.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the water sleeve series structure has the advantages that the water flow velocity in the sleeve is a fixed value, the water flow velocity does not change and only changes the water flow direction, so that the medium flow resistance in the heat exchanger is reduced, the energy consumption of the operation auxiliary equipment is reduced, the water sleeve series structure is used, the cooling medium and the hot gas form a pure countercurrent, the heat transfer temperature difference calculation method is delta T (delta TINF), the temperature difference correction coefficient F (delta TINF) is 1, the water sleeve series structure is superior to the water sleeve parallel structure, and the overall operation economy of the heat exchanger is improved.
In addition, in the water sleeve series structure, a single heat pipe can be an independent heat exchange molecule, and the single heat pipe can be isolated and replaced when replaced, so that the maintenance is convenient, and the replacement cost of accessories is low.
In this water jacket pipe structure, every water jacket pipe has at least one section curved baffling pipe, and coolant turns back the flow about baffling intraductal, makes the heat transfer more even, and increased the stroke and the time of coolant in the heat transfer piping after establishing ties, is rised step by the heating medium temperature, and the temperature of being heated medium by heat transfer piping exhaust is higher.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be implemented in other ways different from the specific details set forth herein, and one skilled in the art may similarly generalize the present invention without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1, a serial water-gas heat exchanger comprises a box 10, a plurality of heat exchange pipes 30 and a heat exchange pipe 30 system formed by connecting a plurality of water sleeves 40 in series. The gas-water heat exchanger can be applied to the field of flue gas cooling, namely a low-temperature economizer, and is also applicable to the field of heat exchange of various gases and liquids, namely a gas-water heat exchanger.
The inner cavity of the box body 10 is partitioned by a horizontally fixed composite tube plate 20, the edge of the composite tube plate 20 is fixed with the inner wall of the box body 10, a heat exchange cavity 120 is formed at the upper part of the inner cavity of the box body, a heat collection cavity 110 is formed at the lower part of the inner cavity of the box body, and the heat collection cavity 110 is communicated with the tail end of a heat generating device.
A plurality of heat exchange pipes 30 are arranged in the tank 10 in an array, and the internal space of the tank 10 can be effectively utilized after the heat exchange pipes 30 are arranged in an array. The two ends of the heat exchange tube 30 are closed, the heat exchange tube 30 is filled with working medium, the heat exchange tube 30 vertically penetrates through the composite tube plate 20 and is fixed with the tube plate in a sealing manner, an evaporation section is formed at the lower part of the heat exchange tube 30, and a condensation section is formed at the upper part of the heat exchange tube.
Each water sleeve 40 is coaxially sleeved on the condensation section of one heat exchange tube 30, a sealed heat exchange gap is formed between each water sleeve 40 and the heat exchange tube 30, every two adjacent rows of water sleeves 40 are communicated through a through tube 410, each row of through tubes 410 at least comprises an arc-shaped baffling tube section 411, each baffling tube section 411 is upwards convex, two ends of each baffling tube section are communicated with the tops of the corresponding two water sleeves 40, the multiple rows of water sleeves 40 are connected in series end to form a heat exchange tube 30 system, and two ends of the heat exchange tube 30 system are respectively a refrigerant inlet and a refrigerant outlet.
When heat sources such as flue gas enter the heat collection cavity 110, the flue gas transfers the heat to the working medium inside the evaporation section of the heat exchange tube 30, the working medium is in a vacuum state, and is vaporized after being heated, the vaporized steam moves upwards to transfer the heat energy to the condensation section above the heat exchange tube 30 in a latent heat mode, the condensation section exchanges heat with condensed water in the water sleeve 40, the working medium vaporized in the heat exchange tube 30 is condensed after exchanging heat, flows back to the evaporation section at the bottom along the inner wall of the heat exchange tube 30 by means of gravity, and is vaporized again after being heated to perform circulating heat exchange.
The water sleeve 40 series structure, the intraductal water velocity of flow of sleeve is the definite value, and the water velocity of flow does not change and only changes the rivers direction for medium flow resistance reduces in the heat exchanger, has reduced the operation auxiliary assembly energy consumption, and water sleeve 40 series structure, and cooling medium forms pure countercurrent with the hot gas body, and the heat transfer difference in temperature calculation method is triangle T ═ triangle TINF, and the difference in temperature correction coefficient F ═ 1, and water sleeve 40 series structure is superior to water sleeve 40 parallel structure, has improved the whole economic nature of operation of heat exchanger.
In addition, in the series structure of the water sleeve 40, a single heat pipe can be an independent heat exchange molecule, and the single heat pipe can be isolated and replaced when replaced, so that the maintenance is convenient, and the replacement cost of accessories is low.
In the structure of the water sleeve 40, each drainage sleeve 40 has at least one section of arc-shaped baffling pipe, the cooling medium flows back up and down in the baffling pipe, so that the heat exchange is more uniform, the stroke and time of the cooling medium in the heat exchange pipe 30 system are increased after the cooling medium is connected in series, the temperature of the heated medium is gradually increased, and the temperature of the heated medium discharged from the heat exchange pipe 30 system is higher.
The composite tube sheet 20 includes an upper tube sheet 210 and a lower tube sheet 220 arranged in parallel, and a sealing packing 230 is filled between the upper tube sheet 210 and the lower tube sheet 220. The arrangement of the sealing filler 230 in the structure has a heat preservation effect, and the sealing filler 230 isolates the metal material, so that the reduction of the heat conduction of the metal is blocked, and the heat conduction loss of the gas side is reduced; secondly, the sealing function is achieved, the assembly tolerance gap between the pipe plate hole and the outer diameter of the heat pipe can be sealed, and the problem of gas sealing leakage of the heat exchanger is solved; and thirdly, the sealing filler 230 has an anti-corrosion effect, steel is corroded due to the corrosivity of gas, and the corrosion mechanism does not occur because the sealing filler is a composite material, so that the corrosion inside the equipment is isolated.
A positioning ring 310 is fixed at the lower part of the condensation segment of the heat exchange tube 30, the outer diameter of the positioning ring 310 is matched with the inner diameter of the water sleeve 40, and the lower end of the water sleeve 40 is fixedly sleeved with the positioning ring 310. The positioning ring 310 is formed as an integral assembly with the heat exchange pipe 30 during the manufacturing process of the heat exchange pipe 30. The positioning ring 310 is used for limiting the vertical direction of the heat exchange tube 30, so that the water sleeve 40 is conveniently fixed, an even annular gap is formed between the water sleeve 40 and the heat exchange tube 30, and the stability of water flow is guaranteed.
In addition, the through pipe 410 is detachably connected with the corresponding water sleeve 40, and the lower end of the water sleeve 40 is detachably connected with the positioning ring 310, for example, in threaded sealing connection, so that the replacement of a single heat exchange pipe 30 is facilitated. If the heat exchange tubes 30 are not detachably connected, the heat exchange tubes 30 and the adjacent heat exchange tubes 30 need to be disassembled together when a single heat exchange tube 30 is replaced. The concrete measures are as follows: cutting off the heat exchange tube 30 to be replaced and the two through tubes 411 corresponding to the adjacent connected heat exchange tubes 30, synchronously drawing out the two heat exchange tubes 30 from the composite tube plate 20, resetting and installing after the heat exchange tubes 30 are replaced and damaged from the outside, and simultaneously welding and recovering the through tubes 411 at the cut-off positions.
In order to avoid the corrosion of the heat exchange tube 30 by the flue gas, the heat exchange tube 30 comprises a base tube and an anticorrosive coating fixed on the outer surface of the base tube, wherein the anticorrosive coating is made of organic glass or fluorine coating to form a fluoroplastic steel material or other anticorrosive treatment technologies.
The above is only the preferred embodiment of the present invention, and any person can make some simple modifications, deformations and equivalent replacements according to the present invention, all fall into the protection scope of the present invention.
Claims (6)
1. A tandem water-gas heat exchanger, comprising:
the heat exchanger comprises a box body (10), an inner cavity of the box body is divided by a composite tube plate (20) which is horizontally fixed, a heat exchange cavity (120) is formed at the upper part of the inner cavity of the box body (10), and a heat collection cavity (110) is formed at the lower part of the inner cavity of the box body;
the heat exchange tubes (30) are arranged in the box body (10) in an array mode, two ends of each heat exchange tube (30) are sealed, working media are filled in the heat exchange tubes (30), the heat exchange tubes (30) vertically penetrate through the composite tube plate (20) and are fixedly sealed with the tube plate, evaporation sections are formed at the lower portions of the heat exchange tubes (30), and condensation sections are formed at the upper portions of the heat exchange tubes; and
the condensation section of each heat exchange tube (30) is coaxially sleeved with a plurality of water sleeves (40), a sealed heat exchange gap is formed between each water sleeve (40) and the heat exchange tube (30), each row of adjacent water sleeves (40) are communicated through a through tube (410), each row of through tubes (410) at least comprises an arc-shaped baffling tube section (411), each baffling tube section (411) is upwards protruded, two ends of each baffling tube section are communicated with the tops of the corresponding two water sleeves (40), the multiple water sleeves (40) are connected in series end to form a heat exchange tube system, and two ends of the heat exchange tube system are respectively a refrigerant inlet and a refrigerant outlet.
2. The series water gas heat exchanger according to claim 1, wherein the composite tube sheet (20) comprises an upper tube sheet (210) and a lower tube sheet (220) arranged in parallel, and a sealing filler (230) is filled between the upper tube sheet (210) and the lower tube sheet (220).
3. The serial water-gas heat exchanger according to claim 1, wherein a positioning ring (310) is fixed at the lower part of the condensation section of the heat exchange tube (30), the outer diameter of the positioning ring (310) is matched with the inner diameter of the water sleeve (40), and the lower end of the water sleeve (40) is fixedly sleeved with the positioning ring (310).
4. The series water-gas heat exchanger according to claim 3, wherein the through pipe (410) is detachably connected with the corresponding water sleeve (40), and the lower end of the water sleeve (40) is detachably connected with the positioning ring (310).
5. The tandem water gas heat exchanger according to claim 1, wherein the heat exchange tubes (30) comprise a base tube and an anti-corrosion layer fixed to the outer surface of the base tube.
6. The series water gas heat exchanger according to claim 5, wherein the corrosion protection layer is a plexiglass layer or a fluorine coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021009747.0U CN212512628U (en) | 2020-06-04 | 2020-06-04 | Serial-type aqueous vapor heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021009747.0U CN212512628U (en) | 2020-06-04 | 2020-06-04 | Serial-type aqueous vapor heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212512628U true CN212512628U (en) | 2021-02-09 |
Family
ID=74382909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021009747.0U Active CN212512628U (en) | 2020-06-04 | 2020-06-04 | Serial-type aqueous vapor heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212512628U (en) |
-
2020
- 2020-06-04 CN CN202021009747.0U patent/CN212512628U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105650876A (en) | Heat exchange device | |
| CN203068991U (en) | Combined waste heat utilization heat pipe waste heat boiler | |
| CN212512628U (en) | Serial-type aqueous vapor heat exchanger | |
| CN201028567Y (en) | Heat pipe type air preheater | |
| CN202485507U (en) | Boiler flue gas waste heat recovery device | |
| CN201081587Y (en) | Composite heat pipe heat exchanger | |
| CN203869018U (en) | Heat pipe type low-temperature flue gas waste heat recovery device for coal-fired power plant | |
| CN202928095U (en) | Heat exchanging structure with air pre-heater | |
| CN203907660U (en) | Heat tube air preheater | |
| CN203869074U (en) | Device for recovering waste heat of gas boiler | |
| CN204943535U (en) | Chimney flue type flue gas heat recovery device | |
| CN204255155U (en) | Flue gas waste heat recovery heat pipe-type air-water heat exchanger | |
| CN206274230U (en) | A kind of superconduction fluidised form heat exchanger | |
| CN210070691U (en) | Flue gas waste heat pipe recovery device | |
| CN215597243U (en) | Heat pipe low-temperature economizer for boiler | |
| CN205824999U (en) | Residual heat from boiler fume recovery system | |
| CN220567904U (en) | Fused salt energy storage node double-coil heat exchanger for industrial waste heat recovery | |
| CN212930069U (en) | Two-phase flow phase-change heat radiator | |
| CN204573972U (en) | Compound temperature-controlled heat exchanger | |
| CN212692568U (en) | Condenser and superheated steam temperature adjusting system using same | |
| CN210833197U (en) | Symmetrical wing-shaped ribbed pipe | |
| CN211372376U (en) | Coal economizer | |
| CN215491205U (en) | Energy-saving steam air preheater | |
| CN202281211U (en) | Fuel oil boiler high-efficiency waste heat recovery device | |
| CN220039183U (en) | Novel flue condenser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |