CN108548433B - Shell-and-tube type secondary spray condenser for cooling tower - Google Patents
Shell-and-tube type secondary spray condenser for cooling tower Download PDFInfo
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- CN108548433B CN108548433B CN201810595048.XA CN201810595048A CN108548433B CN 108548433 B CN108548433 B CN 108548433B CN 201810595048 A CN201810595048 A CN 201810595048A CN 108548433 B CN108548433 B CN 108548433B
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- Prior art keywords
- tube
- water collecting
- pipe
- collecting cavity
- cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 53
- 239000007921 spray Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 83
- 239000012530 fluid Substances 0.000 claims abstract description 24
- 239000000498 cooling water Substances 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 11
- 239000011229 interlayer Substances 0.000 claims description 5
- 238000005253 cladding Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C1/00—Direct-contact trickle coolers, e.g. cooling towers
- F28C1/14—Direct-contact trickle coolers, e.g. cooling towers comprising also a non-direct contact heat exchange
-
- 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
- F28D3/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits
- F28D3/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium flows in a continuous film, or trickles freely, over the conduits with tubular conduits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a shell-and-tube type secondary spray condenser for a cooling tower, which comprises condensing coils distributed in rows, wherein the condensing coils comprise an outer tube and an inner tube; the upper port of the outer tube is communicated with the upper water collecting cavity; the upper port of the inner tube is communicated with the upper manifold; the upper collecting cavity is arranged in the upper collecting cavity; the lower port of the outer tube is communicated with the lower water collecting cavity; the lower port of the inner tube is communicated with the lower manifold; the lower collecting cavity is arranged in the lower collecting cavity; the upper manifold is communicated with a fluid inlet pipe; the lower manifold body is communicated with a fluid outlet pipe; the side of the lower water collecting cavity is provided with a branch pipe; the upper water collecting cavity is provided with a water guide pipe; the upper end of the water guide pipe is connected with a water collecting tank; the bottom surface of the water collecting tank is distributed with secondary spray heads; the water collecting tank is horizontally arranged above the condensing coil. The cooling area is larger, the complete contact type water cooling and indirect evaporative cooling can be realized, the cooling efficiency of the condenser is greatly improved, and the purpose of high-efficiency cooling is achieved.
Description
Technical Field
The invention belongs to the technical field of cooling towers, and particularly relates to a shell and tube type secondary spray condenser for a cooling tower.
Background
As shown in fig. 1, the existing condenser for a cooling tower adopts a straight pipe structure, two ends of the condenser coil are connected with an elbow to form a roundabout structure, external cooling water is sprayed on the upper surface of the condenser downwards from the upper end to perform evaporative cooling, the cooling efficiency of the condenser is limited and cannot break through due to the limitation of the structure and the limitation of a cooling mode, if the cooling efficiency is required to be improved, the condenser is required to be made larger, so that the larger the cooling tower body is, the higher the cost is, and the larger the occupied area and the whole volume are.
Disclosure of Invention
The shell and tube type secondary spray condenser for the cooling tower is larger in heat dissipation area, can realize complete contact water cooling and indirect evaporative cooling, greatly improves the cooling efficiency of the condenser, and achieves the purpose of high-efficiency cooling.
In order to achieve the above purpose, the invention adopts the following technical scheme: a shell-and-tube type secondary spray condenser for a cooling tower comprises condensing coils distributed in rows, wherein the condensing coils are double-layer tubes with interlayer cavities, and comprise an outer tube at the outer layer and an inner tube at the inner layer; the upper port of the outer tube is communicated with the upper water collecting cavity; the upper port of the inner tube is communicated with the upper manifold; the upper collecting cavity is arranged in the upper collecting cavity; the lower port of the outer tube is communicated with the lower water collecting cavity; the lower port of the inner tube is communicated with a lower manifold; the lower collecting cavity is arranged in the lower collecting cavity; the upper manifold is communicated with a fluid inlet pipe; the fluid inlet pipe extends out after passing through the upper water collecting cavity; the lower manifold body is communicated with a fluid outlet pipe; the fluid outlet pipe extends out after passing through the lower water collecting cavity; a branch pipe is arranged on the side edge of the lower water collecting cavity; a water guide pipe is arranged on the upper water collecting cavity; the upper end of the water guide pipe is connected with a water collecting tank; the bottom surface of the water collecting tank is provided with secondary spray heads; the water collecting tank is horizontally arranged above the condensing coil.
Further, the secondary spray head is a deflection fan-shaped spray nozzle; each two of the secondary spray heads are distributed on the bottom surface of the water collecting tank in a group; the nozzles of the two secondary spray heads in the same group are oppositely arranged.
Further, the upper port of the secondary spray head is higher than the bottom surface of the water collecting tank.
Further, the water collecting tank is provided with at least three.
Further, the outer tube is formed by connecting an outer straight tube and an outer arc tube to form an S shape; the inner tube is formed by connecting an inner straight tube and an inner arc tube.
Further, a locating frame for ensuring that the inner straight pipe is coaxially arranged in the outer straight pipe is arranged between the two ends of the inner straight pipe and the two ends of the outer straight pipe.
Further, the positioning frame comprises an inner sleeve and an outer sleeve; a connecting rod is uniformly arranged between the inner sleeve and the outer sleeve; the inner sleeve is sleeved at the end of the inner straight pipe; the outer sleeve is sleeved in the outer straight pipe.
The invention has the beneficial effects that:
1. the invention can enlarge the heat exchange area of the condenser and realize primary contact cooling and primary indirect evaporative cooling, and has better cooling effect; the cooling water tonnage of the cooling tower under the same volume is larger, and the cooling efficiency is higher.
2. After the shell-and-tube type condenser is adopted, the circulating water in the shell-and-tube can also prevent external cold air from entering the tower to freeze in cold areas, and the effect of deicing the tower body is realized.
3. The shell-and-tube type condenser adopts the double-layer condensing coil, forms water-cooling direct contact cooling by filling flowing cooling water into the interlayer cavity, greatly improves the cooling effect, simultaneously, the cooling water in the interlayer cavity absorbs heat and then is mixed with external low-temperature cooling water to be lowered again to form second-path evaporation type cooling, further improves the cooling efficiency, and adopts the double-layer condensing coil to enable the pipe diameter of an outer pipe of the condensing coil to be larger, the heat dissipation area to be larger, improves the evaporation type cooling efficiency and enables the cooling efficiency of the cooling tower body with the same volume to be greatly improved.
4. The secondary shower nozzle adopts deflection fan-shaped nozzle, and the spout sets up relatively for the water curtain that sprays produces the mutual collision, promotes the drop to form the atomizing, and it is more even to drop, and makes the forced air cooling effect of fan stronger, improves the evaporative cooling effect of cooling water.
Drawings
FIG. 1 is a schematic diagram of a conventional counter-flow cooling tower;
FIG. 2 is a schematic view of the overall structure of a shell-and-tube condenser;
FIG. 3 is an enlarged schematic view of the part C in FIG. 2;
FIG. 4 is a schematic view of a partial D-amp structure of FIG. 2;
FIG. 5 is an enlarged schematic view of the portion E of FIG. 2;
FIG. 6 is a schematic cross-sectional view of a secondary spray head installed in a sump;
FIG. 7 is a schematic view of the mounting orientation of the secondary nozzle;
FIG. 8 is a schematic view of the structure of a condensing coil;
FIG. 9 is a schematic end face structure of an inner straight tube positioned and installed in an outer straight tube;
FIG. 10 is a schematic side sectional view of the inner straight tube positioned and installed within the outer straight tube.
In the figure: 1. a blower; 2. a shower pipe; 3. a primary spray head; 4. a water collection tank; 5. a secondary nozzle; 6. a filler; 7. a shell-and-tube condenser; 8. a water accumulation basin; 9. a water inlet pipe; 10. a water pump; 11. a fluid inlet pipe; 12. a branch pipe; 13. a water collecting pipe; 14. a fluid outlet pipe; 15. an upper water collection cavity; 16. a water conduit; 17. an upper manifold body; 18. a total water inlet cavity; 19. an inner tube; 20. an outer tube; 21. a condensing coil; 22. a lower water collecting cavity; 23. a lower manifold body; 24. a connecting rod; 25. an inner sleeve; 26. a jacket; 27. a positioning frame; 191. an inner straight tube; 192. an inner arced tube; 201. an outer straight tube; 202. an outer arced tube.
Detailed Description
In order that those skilled in the art may better understand the technical solutions of the present invention, the following detailed description of the present invention with reference to the accompanying drawings is provided for exemplary and explanatory purposes only and should not be construed as limiting the scope of the present invention.
As shown in fig. 2 to 10, the specific structure of the present invention is: a shell-and-tube type secondary spray condenser for a cooling tower comprises condensing coils 21 distributed in rows, wherein the condensing coils 21 are double-layer tubes with interlayer cavities, and comprise an outer tube 20 of an outer layer and an inner tube 19 of an inner layer; the upper port of the outer tube 20 is communicated with the upper water collecting cavity 15; the upper port of the inner pipe 19 is communicated with the upper manifold 17; the upper manifold body 17 is arranged in the upper manifold body 15; the lower port of the outer tube 20 is communicated with a lower water collecting cavity 22; the lower port of the inner tube 19 is communicated with a lower manifold 23; the lower manifold body 23 is arranged in the lower manifold body 22; the upper manifold 17 is communicated with a fluid inlet pipe 11; the fluid inlet pipe 11 passes through the upper water collecting cavity 15 and then extends out; the lower manifold 23 is communicated with a fluid outlet pipe 14; the fluid outlet pipe 14 passes through the lower water collecting cavity 22 and then extends out; the side of the lower water collecting cavity 22 is provided with a branch pipe 12; a water guide pipe 16 is arranged on the upper water collecting cavity 15; the upper end of the water guide pipe 16 is connected with the water collecting tank 4; the bottom surface of the water collecting tank 4 is provided with secondary spray heads 5; the water collection sump 4 is horizontally arranged above the condensing coil 21.
In order to enable sprayed water curtains to collide with each other, the falling water drops are promoted to form atomization, the falling is more uniform, the air cooling effect of a fan is stronger, the evaporative cooling effect of cooling water is improved, and the secondary spray head 5 is a deflection fan-shaped spray nozzle; each two of the secondary spray heads 5 are distributed on the bottom surface of the water collecting tank 4 in a group; the nozzles of the two secondary spray heads 5 in the same group are oppositely arranged.
In order to ensure that the secondary cooling water from the condenser outer tube 20 enters the water collecting tank 4 and is fully mixed and cooled with the external cooling water, the secondary evaporation type cooling efficiency is ensured, and the upper port of the secondary spray head 5 is higher than the bottom surface of the water collecting tank 4.
In order to enhance the secondary evaporative cooling effect, the water collection tank 4 is provided with not less than three.
In order to improve the structural stability of the condenser coil, the outer tube 20 is formed by connecting an outer straight tube 201 and an outer arc tube 202 to form an S shape; the inner tube 19 is formed in an S-shape by interconnecting an inner straight tube 191 and an inner arcuate tube 192.
In order to improve the structural stability of the condenser coil, a positioning frame 27 for ensuring that the inner straight tube 191 is coaxially arranged in the outer straight tube 201 is arranged between the two ends of the inner straight tube 191 and the outer straight tube 201.
In order to improve the structural stability of the condenser coil, the positioning frame 27 comprises an inner sleeve 25 and an outer sleeve 26; a connecting rod 24 is uniformly arranged between the inner sleeve 25 and the outer sleeve 26; the inner sleeve 25 is sleeved at the end of the inner straight pipe 191; the outer sleeve 26 is sleeved in the outer straight pipe 201.
The fluid inlet pipe 11 passes through the upper water collecting cavity 15 and then is connected with the upper water collecting cavity 17; the fluid outlet pipe 14 passes through the lower collecting cavity 22 and then is connected with the lower collecting cavity 23.
The invention has the specific application principle that:
The hot fluid flows from the fluid inlet pipe 11 into the upper manifold 17, then flows into each inner pipe 19 in a distributed manner, cools, flows from the outlet at the lower end of the inner pipe 19 into the lower manifold 23, and then flows out of the fluid outlet pipe 14.
After cooling water enters the lower water collecting cavity 22 from the branch pipe 12, the cooling water flows into each outer pipe 20 respectively, after the outer wall of the inner pipe 19 is subjected to complete cladding type water contact cooling, the cooling water flows into the upper water collecting cavity 15 from the outlet at the upper end of the outer pipe 20, then flows into the water collecting tank 4 at the top end along the water guide pipe 16, cooling water sprayed by the spray head at the top end of the cooling tower falls into the water collecting tank 4, is mixed with secondary cooling water flowing out of the water guide pipe 16 and then cooled, and then is sprayed out of the secondary spray head 5 at the bottom of the water collecting tank 4, the spray nozzles are arranged oppositely, so that sprayed water curtains collide with each other, falling water drops are enabled to be finer and even, and the water drops fall onto the outer wall of the outer pipe 20 of the shell-and-tube condenser 7 and are subjected to primary evaporation type cooling, so that the cooling effect of the condenser can be greatly improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this invention, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the invention, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present invention.
Claims (5)
1. The shell-and-tube type secondary spray condenser for the cooling tower comprises condensing coils (21) distributed in rows, and is characterized in that the condensing coils (21) are double-layer tubes with interlayer cavities, and comprise an outer tube (20) at the outer layer and an inner tube (19) at the inner layer; the upper port of the outer tube (20) is communicated with the upper water collecting cavity (15); the upper port of the inner tube (19) is communicated with the upper manifold (17); the upper collecting cavity (17) is arranged in the upper collecting cavity (15); the lower port of the outer tube (20) is communicated with the lower water collecting cavity (22); the lower port of the inner tube (19) is communicated with a lower manifold (23); the lower manifold body (23) is arranged in the lower manifold body (22); the upper manifold body (17) is communicated with a fluid inlet pipe (11); the fluid inlet pipe (11) passes through the upper water collecting cavity (15) and then extends out; the lower manifold body (23) is communicated with a fluid outlet pipe (14); the fluid outlet pipe (14) passes through the lower water collecting cavity (22) and then extends out; a branch pipe (12) is arranged at the side edge of the lower water collecting cavity (22); a water guide pipe (16) is arranged on the upper water collecting cavity (15); the upper end of the water guide pipe (16) is connected with a water collecting tank (4); the bottom surface of the water collecting tank (4) is provided with secondary spray heads (5); the water collecting tank (4) is horizontally arranged above the condensing coil (21);
the secondary spray head (5) is a deflection fan-shaped spray nozzle; every two secondary spray heads (5) are distributed on the bottom surface of the water collecting tank (4) in a group; the nozzles of two secondary spray heads (5) in the same group are oppositely arranged;
The position of the upper port of the secondary spray head (5) is higher than the bottom surface of the water collecting tank (4);
The hot fluid flows into the upper manifold (17) from the fluid inlet pipe (11), then flows into each inner pipe (19) in a distributed manner, flows into the lower manifold (23) from the outlet at the lower end of the inner pipe (19) after being cooled, and flows out from the fluid outlet pipe (14);
after entering the lower water collecting cavity (22) from the branch pipe (12), the cooling water flows into each outer pipe (20) respectively, and after the outer wall of the inner pipe (19) is subjected to complete cladding type water contact cooling, the cooling water flows into the upper water collecting cavity (15) from the outlet at the upper end of the outer pipe (20).
2. A shell-and-tube type secondary spray condenser for cooling towers according to claim 1, wherein said water collecting tank (4) is provided with not less than three.
3. A shell-and-tube type secondary spray condenser for cooling towers according to claim 1, wherein the outer tube (20) is formed by connecting an outer straight tube (201) and an outer arc tube (202) to each other to form an S shape; the inner tube (19) is formed by connecting an inner straight tube (191) and an inner arc tube (192) with each other.
4. A shell-and-tube type secondary spray condenser for a cooling tower according to claim 3, wherein a positioning frame (27) for ensuring that the inner straight tube (191) is coaxially arranged in the outer straight tube (201) is arranged between the two ends of the inner straight tube (191) and the two ends of the outer straight tube (201).
5. A shell and tube type secondary spray condenser for a cooling tower according to claim 4, wherein the positioning frame (27) comprises an inner sleeve (25) and an outer sleeve (26); a connecting rod (24) is uniformly arranged between the inner sleeve (25) and the outer sleeve (26); the inner sleeve (25) is sleeved at the end of the inner straight pipe (191); the outer sleeve (26) is sleeved in the outer straight pipe (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810595048.XA CN108548433B (en) | 2018-06-11 | 2018-06-11 | Shell-and-tube type secondary spray condenser for cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810595048.XA CN108548433B (en) | 2018-06-11 | 2018-06-11 | Shell-and-tube type secondary spray condenser for cooling tower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108548433A CN108548433A (en) | 2018-09-18 |
| CN108548433B true CN108548433B (en) | 2024-06-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810595048.XA Active CN108548433B (en) | 2018-06-11 | 2018-06-11 | Shell-and-tube type secondary spray condenser for cooling tower |
Country Status (1)
| Country | Link |
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| CN (1) | CN108548433B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1299921A (en) * | 1969-01-31 | 1972-12-13 | Baltimore Aircoil Co Inc | Evaporative heat exchangers |
| CN206073747U (en) * | 2016-09-21 | 2017-04-05 | 洛阳隆华传热节能股份有限公司 | A kind of sleeve pipe vaporation-type mixed-flow condenser |
| CN208443226U (en) * | 2018-06-11 | 2019-01-29 | 湖南元亨科技股份有限公司 | A kind of shell-tube type secondary spraying condenser used for cooling tower |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101017752B1 (en) * | 2005-11-29 | 2011-02-28 | 베테 포그 노즐 인코포레이티드 | Spray nozzle |
| JP6607712B2 (en) * | 2015-06-24 | 2019-11-20 | オルガノ株式会社 | Air purification device |
-
2018
- 2018-06-11 CN CN201810595048.XA patent/CN108548433B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1299921A (en) * | 1969-01-31 | 1972-12-13 | Baltimore Aircoil Co Inc | Evaporative heat exchangers |
| CN206073747U (en) * | 2016-09-21 | 2017-04-05 | 洛阳隆华传热节能股份有限公司 | A kind of sleeve pipe vaporation-type mixed-flow condenser |
| CN208443226U (en) * | 2018-06-11 | 2019-01-29 | 湖南元亨科技股份有限公司 | A kind of shell-tube type secondary spraying condenser used for cooling tower |
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| Publication number | Publication date |
|---|---|
| CN108548433A (en) | 2018-09-18 |
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