CN112762753A - Multi-section type reinforced heat exchange tube based on internal thread and positive and negative internal fin coupling structure - Google Patents
Multi-section type reinforced heat exchange tube based on internal thread and positive and negative internal fin coupling structure Download PDFInfo
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- CN112762753A CN112762753A CN202110141671.XA CN202110141671A CN112762753A CN 112762753 A CN112762753 A CN 112762753A CN 202110141671 A CN202110141671 A CN 202110141671A CN 112762753 A CN112762753 A CN 112762753A
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- heat exchange
- exchange tube
- pipe section
- internal thread
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/08—Tubular elements crimped or corrugated in longitudinal section
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/10—Arrangements for sealing elements into header boxes or end plates by dismountable joints by screw-type connections, e.g. gland
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/24—Arrangements for promoting turbulent flow of heat-exchange media, e.g. by plates
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Geometry (AREA)
- Fluid Mechanics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a multi-section type reinforced heat exchange tube based on an internal thread and a positive and negative inner fin coupling structure, which comprises a plurality of straight tube sections and corrugated tube sections which are sequentially connected, wherein both ends of the heat exchange tube are provided with the straight tube sections; meanwhile, the corrugated pipe has the function of free disassembly and stronger heat exchange performance through the matching work of the internal thread and the external thread, so that the working efficiency of the corrugated pipe is improved, and the effects of energy conservation and emission reduction are achieved.
Description
Technical Field
The invention relates to a multi-section type reinforced heat exchange tube based on an internal thread and a positive and negative inner fin coupling structure, and belongs to the field of corrugated tube heat exchangers.
Background
The corrugated pipe is a cylindrical thin-wall elastic shell with transverse corrugations. The corrugated tube heat exchanger is a special shell-and-tube heat exchanger in China, because the corrugated tube is adopted to cause turbulence of media inside and outside the tube, the boundary layer is damaged to improve the heat transfer coefficient, and the heat transfer effect is much higher than that of the shell-and-tube heat exchanger of a light tube; turbulent flow scouring reduces or avoids scaling, and the requirement on water quality can be reduced. And is therefore a heat exchanger commonly used in heating systems, and more particularly in steam-water heat exchange systems.
The addition of fins in the light pipe is an effective means for enhancing heat exchange, which is often used in cold heat exchangers in air compressors. Many studies have been made on the inner fins of different shapes from the viewpoint of experiments and numerical calculations. In foreign countries, the research on corrugated channels is more, and the heat exchange capability of the corrugated channels is better than that of straight channels, but the research on corrugated pipelines is not much. The researchers of the scholars in China carry out research on the wave node pipe enhanced heat transfer type heat exchanger, and the comprehensive performance of the heat exchanger adopting the wave node pipe as the heat exchange surface is obviously improved. However, some of the strengthening methods strengthen the heat exchange effect in the pipe, and the strengthening of the pipe shell side is not considered to cooperate with the strengthening of the other part to achieve the effect of strengthening the heat exchange effect inside and outside the pipe, but the flow resistance at two sides is greatly increased, the power consumption of the pump is increased, and the noise is also increased. Therefore, it is necessary to develop a new double-pipe heat exchange pipe type which can enhance heat exchange at both sides and reduce flow resistance so that the overall heat exchange performance is high.
The conventional corrugated pipe is generally only provided with one section, cannot be assembled, cannot be well fixed in use, and is easy to deviate from a specified position in installation.
At present, the corrugated tube heat exchanger is widely used, but the heat exchange effect and the effect of reducing partial flow resistance are still to be improved. And the present bellows are not conducive to installation and assembly. Therefore, at present, the invention is urgently needed to invent a multi-section type strengthened heat exchange tube based on a cooperative coupling structure of internal threads and positive and negative internal fins.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a multi-section type strengthened heat exchange tube which gives consideration to heat exchange effect and flow resistance and is based on a cooperative coupling structure of internal threads and positive and negative internal fins.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a heat exchange tube is reinforceed to multistage formula based on internal thread and positive and negative inner fin coupled structure which characterized in that: the heat exchange tube comprises a plurality of straight tube sections and corrugated tube sections which are connected in sequence, wherein the two ends of the heat exchange tube are the straight tube sections, the straight tube sections are provided with internal threads, the inner walls of the corrugated tube sections are provided with fins which are arranged obliquely, the oblique directions of the fins in the two adjacent corrugated tube sections are opposite, the straight tube section at the rear end of the heat exchange tube is provided with external threads, the diameter of the external threads is smaller than that of the other straight tube sections, and the straight tube sections are used for being in threaded.
The technical scheme is further designed as follows: the pipe diameter of the corrugated pipe section is larger than that of the straight pipe section.
The pipe wall of the front end of the corrugated pipe section is tangent to the pipe wall of the adjacent straight pipe section.
The pipe wall at the rear end of the corrugated pipe section is connected with the pipe wall of the adjacent straight pipe section through a transition fillet.
The radius of the transition fillet is 1 mm.
The inner wall of the corrugated pipe section is a smooth curve from front to back, and the maximum pipe diameter position of the corrugated pipe section is located at the back of the corrugated pipe section.
A plurality of fins are arranged in one corrugated pipe section, and are arranged in parallel and are uniformly arranged on the inner wall of the corrugated pipe section.
One end of each fin is fixed on the inner wall of the corrugated pipe section, and the other end of each fin inclines towards the front side or the rear side of the corrugated pipe section.
The included angles between the fins and the horizontal line are both 45 degrees.
The corrugated pipe section is of a rotator structure.
The invention has the beneficial effects that:
the heat exchange tube can be freely disassembled and assembled through threads at two ends, so that a plurality of tubes can be conveniently connected, the corrugated heat exchange tube has higher flexibility and stronger applicability;
the invention increases the heat exchange area through the corrugated pipe section, the fins and the internal thread, thereby enhancing the heat exchange performance;
the included angle between the fins in the corrugated pipe section and the horizontal line is 45 degrees, the inclined direction of a part of the fins is consistent with the movement direction of the fluid, and the heat exchange efficiency of the heat exchange pipe can be improved while the flow resistance of the fluid is reduced, so that the working efficiency of the heat exchange pipe is improved, and the effects of energy conservation and emission reduction are achieved.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is an enlarged partial view of the external threads of FIG. 1;
FIG. 4 is an enlarged partial view of a transition fillet;
the structure comprises 11-internal threads, 12-external threads, 2-straight pipe sections, 3-corrugated pipe sections, 4-downstream fins, 5-upstream fins and 6-transition fillets.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
As shown in fig. 1, the multi-section reinforced heat exchange tube based on the internal thread and the coupling structure of the positive and negative inner fins in the embodiment has a rotator structure as a whole, and includes a plurality of straight tube sections 2 and corrugated tube sections 3 connected in sequence, and both ends of the heat exchange tube are straight tube sections, in the embodiment, four straight tube sections 2 and three corrugated tube sections 3 are provided, the straight tube section 2 is provided with an internal thread 1, the inner wall of the corrugated tube section 3 is provided with obliquely arranged fins, the oblique directions of the inner fins of two adjacent corrugated tube sections 3 are opposite, the straight tube section 2 at the rear end of the heat exchange tube is provided with an external thread 12, and the diameter of.
As shown in fig. 2, in the heat exchange tube of the present embodiment, in the specific working process, the front side of the tube wall of the corrugated tube section 3 is tangent to the tube wall of the straight tube section 2, so that the fluid smoothly enters the corrugated tube section 3, and the fluid resistance is reduced; the rear side of the corrugated pipe section 3 is in a wave shape and can be used for strengthening heat exchange; fins are arranged on the inner wall of the corrugated pipe section 3, and the included angle between the fins and the horizontal plane is 45 degrees; the fins are divided into downstream fins 4 and upstream fins 5, the downstream fins 4 are used for reducing partial flow resistance of fluid in the heat exchange tube, and the upstream fins 5 are used for strengthening heat exchange; in this embodiment, a plurality of fins are disposed in each corrugated pipe section 2, and the plurality of fins are disposed in parallel and uniformly on the inner wall of the corrugated pipe section. One end of each fin is fixed on the inner wall of the corrugated pipe section, and the other end of each fin inclines towards the front side or the rear side of the corrugated pipe section.
The rear side of the inner wall of the corrugated pipe section 3 is connected with the pipe wall of the straight pipe section 2 through a transition fillet 6, the radius of the transition fillet 6 is 1mm, and the transition fillet 6 can be used for reducing partial flow resistance of fluid as shown in fig. 4; in this embodiment, the inner wall of the corrugated pipe section 3 is a smooth curve from front to back, and the maximum pipe diameter of the corrugated pipe section 3 is located at the back of the corrugated pipe section.
As shown in fig. 3, the external thread 12 on the straight tube section 2 at the rear end of the heat exchange tube can be used for connecting the internal thread 11 on the straight tube section 2 at the front end of the adjacent heat exchange tube, so that the multi-tube connection is realized, and the corrugated tube has more flexibility.
The heat exchange tube of the embodiment has the following specific working process: and selecting proper heat exchange tubes according to the required length, and splicing the heat exchange tubes for use if necessary. After the heat exchange tube is installed by using the connecting structure, fluid can be introduced; the fluid flows through the internal thread 11 area of the straight pipe section 2 for reinforced heat exchange, then smoothly enters the corrugated pipe section 3, and in the area of the counter flow fin 5, reinforced heat exchange is carried out through the counter flow fin 5 and the wave-shaped structure at the rear side of the corrugated pipe section 3; in the area of the downstream fin 4, the heat exchange is enhanced only through the wave-shaped structure at the rear side of the corrugated pipe section 4, but the flow resistance of part is reduced through the downstream fin, and finally, the downstream fin flows through the transition fillet 6 and smoothly enters the straight pipe section 2 at the next stage. The whole corrugated tube heat exchanger is repeatedly passed through to complete one-time heat exchange, and the work is completed after the heat exchange is combined.
Example two
The multi-section type reinforced heat exchange tube based on the internal thread and the positive and negative inner fin coupling structure is basically the same as the embodiment, the whole heat exchange tube is of a rotator structure and comprises two straight tube sections 2 and a corrugated tube section 3 arranged between the two straight tube sections, wherein the straight tube sections 2 are provided with the internal thread 1, the inner walls of the corrugated tube sections 3 are provided with fins arranged obliquely, a plurality of heat exchange tubes are connected for use when the heat exchange tube is used, so that the oblique directions of the fins in the two adjacent corrugated tube sections 3 are opposite, and the straight tube section 2 positioned at the rear end of the heat exchange tube is provided with the external thread 12 and the tube diameter of the external thread is smaller than.
In the embodiment, the rear side of the inner wall of the corrugated pipe section 3 is connected with the pipe wall of the straight pipe section 2 through the transition fillet 6, and the radius of the transition fillet 6 is 1mm, so that the flow resistance of part of fluid can be reduced; in this embodiment, the inner wall of the corrugated pipe section 3 is a smooth curve from front to back, and the maximum pipe diameter of the corrugated pipe section 3 is located at the back of the corrugated pipe section.
The external thread 12 on the straight pipe section 2 at the rear end of the heat exchange pipe can be used for connecting the internal thread 11 on the straight pipe section 2 at the front end of the adjacent heat exchange pipe, and one heat exchange pipe is only provided with a corrugated pipe section in the embodiment, so that the heat exchange pipe has more flexibility in actual multi-pipe connection and use compared with the first embodiment
The heat exchange tube of the embodiment has the following specific working process: and selecting proper heat exchange tubes according to the required length, and splicing the heat exchange tubes for use if necessary. After the heat exchange tube is installed by using the connecting structure, fluid can be introduced; the fluid flows through the internal thread 11 area of the straight pipe section 2 for reinforced heat exchange, then smoothly enters the corrugated pipe section 3, and in the area of the counter flow fin 5, reinforced heat exchange is carried out through the counter flow fin 5 and the wave-shaped structure at the rear side of the corrugated pipe section 3; in the area of the downstream fin 4, the heat exchange is enhanced only through the wave-shaped structure at the rear side of the corrugated pipe section 4, but the flow resistance of part is reduced through the downstream fin, and finally, the downstream fin flows through the transition fillet 6 and smoothly enters the straight pipe section 2 at the next stage. The whole corrugated tube heat exchanger is repeatedly passed through to complete one-time heat exchange, and the work is completed after the heat exchange is combined.
The technical solutions of the present invention are not limited to the above embodiments, and all technical solutions obtained by using equivalent substitution modes fall within the scope of the present invention.
Claims (10)
1. The utility model provides a heat exchange tube is reinforceed to multistage formula based on internal thread and positive and negative inner fin coupled structure which characterized in that: the heat exchange tube comprises a plurality of straight tube sections and corrugated tube sections which are connected in sequence, wherein the two ends of the heat exchange tube are the straight tube sections, the straight tube sections are provided with internal threads, the inner walls of the corrugated tube sections are provided with fins which are arranged obliquely, the oblique directions of the fins in the two adjacent corrugated tube sections are opposite, the straight tube section at the rear end of the heat exchange tube is provided with external threads, the diameter of the external threads is smaller than that of the other straight tube sections, and the straight tube sections are used for being in threaded.
2. The multi-section type enhanced heat exchange tube based on the internal thread and the coupling structure of the front and the back inner fins as claimed in claim 1, is characterized in that: the pipe diameter of the corrugated pipe section is larger than that of the straight pipe section.
3. The multi-section type enhanced heat exchange tube based on the internal thread and the coupling structure of the front and the back inner fins as claimed in claim 1, is characterized in that: the pipe wall of the front end of the corrugated pipe section is tangent to the pipe wall of the adjacent straight pipe section.
4. The multi-section type enhanced heat exchange tube based on the coupling structure of the internal thread and the front and back inner fins as claimed in claim 3, wherein: the pipe wall at the rear end of the corrugated pipe section is connected with the pipe wall of the adjacent straight pipe section through a transition fillet.
5. The multi-section type enhanced heat exchange tube based on the internal thread and the coupling structure of the front and back inner fins as claimed in claim 4, wherein: the radius of the transition fillet is 1 mm.
6. The multi-section type enhanced heat exchange tube based on the coupling structure of the internal thread and the front and back inner fins as claimed in claim 5, wherein: the inner wall of the corrugated pipe section is a smooth curve from front to back, and the maximum pipe diameter position of the corrugated pipe section is located at the back of the corrugated pipe section.
7. The multi-section type enhanced heat exchange tube based on the internal thread and the coupling structure of the front and the back inner fins as claimed in claim 1, is characterized in that: a plurality of fins are arranged in one corrugated pipe section, and are arranged in parallel and are uniformly arranged on the inner wall of the corrugated pipe section.
8. The multi-section type enhanced heat exchange tube based on the coupling structure of the internal thread and the front and back inner fins as claimed in claim 7, wherein: one end of each fin is fixed on the inner wall of the corrugated pipe section, and the other end of each fin inclines towards the front side or the rear side of the corrugated pipe section.
9. The multi-section type enhanced heat exchange tube based on the internal thread and the coupling structure of the front and back inner fins as claimed in claim 8, wherein: the included angles between the fins and the horizontal line are both 45 degrees.
10. The multi-section type enhanced heat exchange tube based on the coupling structure of the internal thread and the front and back inner fins as claimed in claim 9, wherein: the corrugated pipe section is of a rotator structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141671.XA CN112762753A (en) | 2021-02-02 | 2021-02-02 | Multi-section type reinforced heat exchange tube based on internal thread and positive and negative internal fin coupling structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110141671.XA CN112762753A (en) | 2021-02-02 | 2021-02-02 | Multi-section type reinforced heat exchange tube based on internal thread and positive and negative internal fin coupling structure |
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| Publication Number | Publication Date |
|---|---|
| CN112762753A true CN112762753A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110141671.XA Pending CN112762753A (en) | 2021-02-02 | 2021-02-02 | Multi-section type reinforced heat exchange tube based on internal thread and positive and negative internal fin coupling structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046194A1 (en) * | 2021-09-27 | 2023-03-30 | 思未来医疗科技有限公司 | Endoscope auxiliary connector |
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2021
- 2021-02-02 CN CN202110141671.XA patent/CN112762753A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023046194A1 (en) * | 2021-09-27 | 2023-03-30 | 思未来医疗科技有限公司 | Endoscope auxiliary connector |
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