CN201819603U - High-flux heat exchange tube with outer longitudinal grooves and inner porous surface - Google Patents
High-flux heat exchange tube with outer longitudinal grooves and inner porous surface Download PDFInfo
- Publication number
- CN201819603U CN201819603U CN2010205239514U CN201020523951U CN201819603U CN 201819603 U CN201819603 U CN 201819603U CN 2010205239514 U CN2010205239514 U CN 2010205239514U CN 201020523951 U CN201020523951 U CN 201020523951U CN 201819603 U CN201819603 U CN 201819603U
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- porous surface
- tube
- heat transfer
- heat exchange
- flux
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Abstract
The utility model relates to a high-flux heat exchange tube with outer longitudinal grooves and an inner porous surface, which is specially designed for enhancing the heat exchanging performance of the heat exchange tube, namely, axial grooves are arranged on the outer surface of a base tube, and a high-flux porous surface layer is arranged on the inner surface of the base tube. Condensate attached on the outer wall of the tube can be drained along the longitudinal grooves on the outer surface of the base tube as quickly as possible so as to reduce the thermal resistance of a liquid film and improve the heat transfer coefficient of the condensed side; and the high-flux porous surface layer can improve the boiling heat transfer coefficient remarkably. The high-flux heat exchange tube with the outer longitudinal grooves and the inner porous surface has the characteristics of high heat transfer coefficient, small heat transfer temperature difference, high critical thermal load, high anti-scaling capability and high cost performance.
Description
Technical field
The utility model relates to heat transfer technology, is porous surface high flux heat exchanger tube in outer pod of a kind of pipe and the pipe specifically.
Background technology
At present, heat exchanger is the most widely used heat transmission equipment, is mainly used in industries such as oil, chemical industry, metallurgy, medicine, refrigeration.Efficiency of heat exchanger is undesirable to be ubiquitous problem, improves the design that heat exchange efficiency then depends on heat exchanger tube to a great extent, and therefore, the exploitation of high-performance heat exchanger tube is the effective way that realizes enhanced heat exchange.Though the stainless steel heat exchanger tube that general heat exchanger generally adopts can effectively energy-conservation and antiscaling, descaling, also there is the low problem with antiacid alkali salt corrosivity difference of heat transfer coefficient.
Summary of the invention
The purpose of this utility model is to provide porous surface high flux heat exchanger tube in outer pod of a kind of pipe and the pipe, and its corrosion resistance and heat transfer coefficient all are better than the stainless steel heat exchanger tube.
The utility model is achieved in that
Be provided with axial notch at the parent tube outer surface, be provided with high flux porous surface layer at the parent tube inner surface.
Operation principle of the present utility model is as follows: offer axial notch at the parent tube outer surface, can make steam behind out-tubular condensing formed condensate liquid as early as possible longitudinally groove drain, thereby reduce to manage outer liquid film thermal resistance, improve the condensation side heat transfer efficiency.Prepare high flux porous surface sinter layer at the parent tube inner surface, can significantly improve the boiling heat transfer coefficient, its strengthening mechanism is to change boiling surface: the superficial layer of porous can form various can the nucleateboiling center that exist steady in a long-term, make film boiling change into nucleateboiling, be that liquid form with thin liquid film in micropore is in heating status all around, rapid swelling fracture behind the gas heating in the bubble, break away from boiling surface, this moment, liquid constantly sucked micropore by surface tension effects, and in the hole, be heated, evaporation, boiling equipment is remained under the state of nucleateboiling, total heat transfer efficiency is greatly improved.Simultaneously, liquid is subjected to steam bubble constantly to expand, shrink in the hole and continues ringing, also makes the hole be difficult for being stopped up by grease or impurity.
It is as follows to manage in outer pod and the pipe performance and the characteristics of porous surface high flux heat exchanger tube: 1. heat transfer coefficient height: because boiling remains at the nucleateboiling state, the boiling heat transfer coefficient is 3～8 times of light pipe, thereby has improved the overall heat-transfer coefficient of boiling equipment greatly.
2. heat transfer temperature difference is little: liquid is to conduct heat and gasification with the thin liquid film form, and heat transfer temperature difference only is 1/4～1/7 of a general surface under identical thermic load, can come to life under 0.6～1.0 ℃ of heat transfer temperature difference.
3. critical thermal load height: the critical thermal load of porous surface tube is higher 1.5～2 times than light pipe.
4. the good antiscale property ability is strong: owing to be the high flux porous surface tube, fluid is 10～15 times of light pipe in the internal circulating load of porous surface, and a large amount of liquid circulation heat exchanging tube-surfaces play cleaning action, thus have more can anti-soil than light pipe characteristic, be difficult for coking.
5. ratio of performance to price height: owing to improved heat transfer efficiency, reduced equipment volume, when reducing equipment investment, also reduced corresponding construction cost, embodied higher performance.
Description of drawings
Fig. 1 is porous surface high flux heat exchanger tube front view in outer pod of pipe and the pipe.
Fig. 2 is high flux porous surface layer schematic diagram in the pipe.
Fig. 3 is porous surface high flux heat exchanger tube left view in outer pod of pipe and the pipe.
The specific embodiment
Referring to figs. 1 through Fig. 3, embodiment of the present utility model is described:
Evenly offer axial notch 2 at metal tube 1 outer surface,,, adopt sintering method to prepare high flux porous surface layer 3 with about 500 ℃～1100 ℃ temperature then at parent tube 1 inner surface.
Claims (1)
1. porous surface high flux heat exchanger tube in outer pod of a pipe and the pipe is characterized in that: be provided with axial notch (2) at parent tube (1) outer surface, be provided with high flux porous surface layer (3) at parent tube (1) inner surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205239514U CN201819603U (en) | 2010-09-08 | 2010-09-08 | High-flux heat exchange tube with outer longitudinal grooves and inner porous surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205239514U CN201819603U (en) | 2010-09-08 | 2010-09-08 | High-flux heat exchange tube with outer longitudinal grooves and inner porous surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201819603U true CN201819603U (en) | 2011-05-04 |
Family
ID=43917553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205239514U Expired - Lifetime CN201819603U (en) | 2010-09-08 | 2010-09-08 | High-flux heat exchange tube with outer longitudinal grooves and inner porous surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201819603U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132571A (en) * | 2013-04-30 | 2014-11-05 | 马成果 | Air-water heat exchange tube with ash accumulation reduction effect |
| CN105806132A (en) * | 2014-12-31 | 2016-07-27 | 江苏信换热器科技有限公司 | Aluminum powder porous layer manufacturing technology and aluminum high-throughput pipe applying porous layer |
| CN106440912A (en) * | 2015-08-07 | 2017-02-22 | 江苏信换热器科技有限公司 | Stainless steel high throughput pipe and manufacturing process thereof |
-
2010
- 2010-09-08 CN CN2010205239514U patent/CN201819603U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132571A (en) * | 2013-04-30 | 2014-11-05 | 马成果 | Air-water heat exchange tube with ash accumulation reduction effect |
| CN105806132A (en) * | 2014-12-31 | 2016-07-27 | 江苏信换热器科技有限公司 | Aluminum powder porous layer manufacturing technology and aluminum high-throughput pipe applying porous layer |
| CN106440912A (en) * | 2015-08-07 | 2017-02-22 | 江苏信换热器科技有限公司 | Stainless steel high throughput pipe and manufacturing process thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 102200, room 2097, block B, No. 9, front road, Changping District science and Technology Park, Beijing Patentee after: BEIJING GUANGSHA HUANNENG SCIENCE & TECHNOLOGY CO., LTD. Address before: 100083 Beijing city Haidian District Zhongguancun road 601 Huaqing Executive Hotel Patentee before: Beijing GroundSun Science & Technology Company Limited |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |