CN210533143U - Inner rib outer groove winding heat exchange tube - Google Patents
Inner rib outer groove winding heat exchange tube Download PDFInfo
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- CN210533143U CN210533143U CN201920837361.XU CN201920837361U CN210533143U CN 210533143 U CN210533143 U CN 210533143U CN 201920837361 U CN201920837361 U CN 201920837361U CN 210533143 U CN210533143 U CN 210533143U
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Abstract
The utility model discloses a novel inner rib outer groove winding heat exchange tube, which is formed by processing an outer groove on the outer side of a straight tube along the twisting and rotating of the tube axis, processing an inner rib on the inner side of the tube along the twisting and rotating of the tube axis and carrying out spiral winding deformation processing around a winding axis; the heat exchange tube body is provided with a hollow inner cavity, and the inner wall of the tube body is provided with a convex inner rib component; the outer wall of the pipe body is provided with a groove, and the outer wall of the pipe body and the groove are provided with thread structures with a certain helical angle; the pipe body comprises an inlet section, an inlet transition section, a spiral winding section, an outlet transition section and an outlet section which are connected in sequence; the inlet section and the outlet section are arranged in a straight section; the spiral winding section part is formed by spirally winding the pipe body into a circular or approximately circular cross section. The utility model relates to an inner rib outer groove winding heat exchange tube, its working medium have the advantage that torrent degree is high, coefficient of heat transfer is high, difficult scale deposit when the heat transfer of intraductal flow, have better development prospect and extensive practical application and worth.
Description
Technical Field
The utility model relates to a reinforce heat transfer technical field, concretely relates to inner rib outer groove winding heat exchange tube.
Background
The heat exchanger has wide application in various industries of national economy, is one of the most common devices in energy, petroleum, chemical engineering, metallurgy, power, light industry, food and even aerospace industries, and is an important device for developing secondary energy and realizing heat recovery and energy conservation and dissipation; at present, a shell-and-tube heat exchanger is widely applied due to large flow, small pressure drop loss and high operation pressure; the heat exchange tubes of the shell-and-tube heat exchanger in engineering application all use light tubes, and the turbulent flow effect of working fluid in the light tubes is poor, so that the defects of unobvious heat exchange effect and low heat exchange efficiency are caused; the shell-and-tube heat exchanger generally has a long operation period, impurities and other dirt in fluid are deposited and are easy to block, the efficiency of equipment is influenced, and particularly, the heat exchange pipeline of a large shell-and-tube heat exchanger is blocked, so that the heat exchange effect is influenced, and the operation of the whole process flow is influenced; the spiral wound tube type heat exchanger has the characteristics of large heat transfer area per unit volume, small occupied area, high heat transfer coefficient, small heat transfer temperature difference, high heat transfer efficiency, high pressure resistance, self-compensation of thermal expansion, difficulty in scaling, easiness in realizing large-scale and the like, and also has the function of realizing simultaneous heat transfer of multiple media. The spiral wound tube type heat exchanger is mainly applied to the industries of air separation, liquefied natural gas and the like. In recent years, with the development of large-scale petrochemical, coal chemical and liquefied natural gas devices, spiral wound tube heat exchangers have been used in large quantities due to their advantages of high heat transfer efficiency, compact structure and the like. For example, a hydrogenation reactor of a large oil refining device, a high-pressure material heat exchanger at the rear part of a reforming reactor of a PX device, a methanol washing heat exchanger in a coal-to-methanol device, and a reactor rear heat exchanger in a coal-to-ethylene glycol device all adopt spiral-wound tubular heat exchangers to replace a traditional baffle plate type heat exchanger, a thread locking ring type heat exchanger and a plate shell type heat exchanger, so that the operation of high pressure resistance and zero leakage is realized. The spiral wound tube type heat exchanger has wide market prospect in the industries of petrochemical industry, coal chemical industry and the like. In the common spiral winding pipe, due to the action of centripetal force, secondary flow moving towards the inner side of the winding pipe is generated in the winding pipe, and along with the gradual stabilization of the flow form, the temperature distribution that the temperature of the fluid working medium at the inner side of the winding pipe is low and the temperature of the fluid working medium at the outer side of the winding pipe is high is formed.
SUMMERY OF THE UTILITY MODEL
To the above, the utility model provides a novel inner rib outer trough winding heat exchange tube, this intraductal working medium torrent degree is high, heat transfer coefficient is high, difficult scale deposit.
The technical scheme of the utility model is that the heat exchange tube with the inner ribs and the outer grooves wound comprises a heat exchange tube body, wherein the tube body is provided with a hollow inner cavity, and the inner wall of the tube body is provided with a convex inner rib component; the outer wall of the pipe body is provided with a groove, and the outer wall of the pipe body and the groove are provided with thread structures with a certain helical angle;
the pipe body comprises an inlet section, an inlet transition section, a spiral winding section, an outlet transition section and an outlet section which are connected in sequence; the inlet section and the outlet section are arranged in a straight section; the spiral winding section part is formed by spirally winding the pipe body into a circular or approximately circular cross section.
Wherein, preferably, the spiral angles of the threads on the outer wall of the inlet section pipe body are the same.
Wherein, preferably, the spiral angle of the thread on the outer wall of the outlet section pipe body is the same.
Wherein, preferably, the thread direction of the outer wall of the pipe body is opposite to the winding rotation direction of the pipe body in the spiral winding section part.
Namely, if the spiral winding direction of the thread on the outer wall of the pipe body is clockwise, the twisting rotation direction of the section of the pipe body in the spiral winding section part is anticlockwise; if the spiral winding direction of the thread on the outer wall of the pipe body is anticlockwise, the twisting and rotating direction of the section of the pipe body in the spiral winding section part is clockwise.
Wherein, preferably, the thread pitches of the outer walls of the pipe bodies are equal.
Preferably, the cross section of the tube body of the heat exchange tube wound by the inner rib outer groove is circular.
Wherein, preferably, the winding direction of the inner rib component is adapted to the thread winding direction of the outer wall of the pipe body.
Has the advantages that:
the heat exchange tube is wound in the inner rib outer groove, the outer wall of the heat exchange tube is provided with a groove, the inner side of the tube wall is provided with an inner rib, and the cross section of the tube body is circular.
The utility model relates to a novel inner rib outer tank winding heat exchange tube, this novel inner rib outer tank winding heat exchange tube spiral winding deformation's winding angle (the helical angle of outer wall promptly), winding diameter, distortion rotation angle, outer groove degree of depth, inner rib height etc. are calculated by operating condition heat load and are confirmed. This novel inner rib outer trough winding heat exchange tube, the intraductal working medium torrent degree of working is high, heat transfer coefficient is high, difficult scale deposit.
Drawings
FIG. 1 is a schematic structural view of an inner rib outer groove wound heat exchange tube;
fig. 2 is a cross-sectional view of a spirally wound section of an internally ribbed externally grooved wound heat exchange tube.
FIG. 3 is a schematic cross-sectional structure view of an inner rib outer groove wound heat exchange tube;
in the figure: 1-inlet section, 2-inlet transition section, 3-spiral winding section, 4-outlet transition section, 5-outlet section, 21-outer surface base circle, 22-groove, 23-pipe wall, 24-inner rib component and 25-inner surface base circle.
Detailed Description
The following describes in further detail embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1, the inner rib outer groove winding heat exchange tube comprises a heat exchange tube body, wherein the tube body is provided with a hollow inner cavity, and a convex inner rib assembly 24 is arranged on the inner wall of the tube body; the outer wall of the pipe body is provided with a groove 22, and the outer wall of the pipe body and the groove are provided with thread structures with a certain helical angle; the pipe body comprises an inlet section 1, an inlet transition section 2, a spiral winding section 3, an outlet transition section 4 and an outlet section 5 which are connected in sequence; the inlet section 1 and the outlet section 5 are arranged in a straight section; the spirally wound section 3 is formed by spirally winding a pipe body into a circular or nearly circular cross section (see fig. 2).
The inner rib outer groove is wound around the heat exchange tube before and after twisting, the section of the tube body is circular, and as shown in figure 3, the tube body comprises an outer surface base circle 21, a groove 22, a tube wall 23, an inner rib assembly 24 and an inner surface base circle 25.
The inner rib outer groove winding heat exchange tube is formed by twisting and rotating a straight tube along the axis of the tube to machine an outer groove on the outer side of the tube, then twisting and rotating the straight tube along the axis of the tube to machine an inner rib on the inner side of the tube, and spirally winding and deforming the inner rib around a winding axis. And machining a pipe outer groove on the outer side of the pipe, wherein the pipe outer groove is twisted and rotated along the axis of the pipe. And processing an inner rib on the inner side of the pipe, wherein the inner rib rotates along the axis of the pipe in a twisting way, and the winding direction of the inner rib assembly is matched with the winding direction of the outer wall thread. Namely, an inner rib is processed on the inner side of the tube, and the inner rib rotates along the same direction of the cross section distortion of the heat exchange tube.
The utility model discloses an embodiment specifically as follows: fluid working medium enters the novel inner rib outer groove winding heat exchange tube from the inlet section 1, passes through the inlet transition section 2 and then flows into the spiral winding section 3; there are two flow enhancements to the fluid working medium in the spiral wound section 3: the superposition of the secondary flow of centripetal force and the flow in the direction of the inner rib flow guide promotes the turbulence degree of the spirally wound section 3; finally, the fluid working medium flows out of the novel inner rib outer groove winding heat exchange tube through the outlet transition section 4 and the outlet section 5.
A novel heat exchange tube wound by inner ribs and outer grooves has a reinforced heat transfer technology for both inside and outside of the tube; wherein, two enhanced heat exchange technologies exist in the tube; the first intensified heat exchange technology is as follows: the special centrifugal force of the spiral winding pipe generates secondary flow, and because of the special structure of the spiral winding section 3, the centripetal force vertical to the inner side of the pipe wall of the winding pipe is generated in the flowing process, so that the secondary flow vertical to the inner side of the pipe wall is generated, the flowing state of fluid on the inner side of the winding pipe is strengthened, and the flowing turbulence effect is increased; the second intensified heat exchange technology is as follows: along the flow of the inner rib diversion direction, the inner rib assembly 24 is twisted and rotated along the spiral winding path, the direction of the inner rib assembly is opposite to the direction of spiral winding deformation, fluid working media rotate and flow along the flow diversion direction of the inner rib assembly 24, the positions of the fluid working media outside the winding pipe and the fluid working media inside the winding pipe are changed alternately, and the secondary rotation flow tangent to the pipe wall is formed objectively, so that the damage of a boundary layer is promoted effectively, the temperature distribution phenomenon that the temperature of the fluid working media inside the winding pipe is low and the temperature of the fluid working media outside the winding pipe is high is broken, and the change of the flow form of the fluid working media inside the winding pipe is strengthened.
The utility model provides a novel outer groove of pipe of inner rib outer tank winding heat exchange tube has carried out the distortion rotation along the pipe axis, and the outer groove of pipe has formed periodic variation, and when fluid working medium twined the outside surface of heat exchange tube through this novel inner rib outer tank, the shape of the recess in the outside of pipe played the effect of destroying the flow boundary layer, impels the turbulent effect of outside of the pipe further to strengthen.
In the novel heat exchange tube with the inner ribs and the outer grooves wound, a plurality of enhanced heat exchange technologies are superposed, so that a fluid wall surface boundary layer and a dirt layer are strongly damaged, the heat exchange coefficient is improved, and scaling is not easy to occur; the novel inner rib outer groove winding heat exchange tube has the advantages of high heat transfer efficiency, compact structure, strong bearing capacity and the like, and has better development prospect and wide practical application value.
Claims (7)
1. The utility model provides an inner rib outer groove winding heat exchange tube, includes the heat exchange tube body, its characterized in that: the tube body is provided with a hollow inner cavity, and the inner wall of the tube body is provided with a convex inner rib component; the outer wall of the pipe body is provided with a groove, and the outer wall of the pipe body and the groove are provided with thread structures with a certain helical angle; the section of the pipe body is circular, and the pipe body comprises an outer surface base circle, a groove, a pipe wall, an inner rib assembly and an inner surface base circle;
the pipe body comprises an inlet section, an inlet transition section, a spiral winding section, an outlet transition section and an outlet section which are connected in sequence; the inlet section and the outlet section are arranged in a straight section; the spiral winding section part is formed by spirally winding the pipe body into a circular or approximately circular cross section.
2. The internally ribbed externally fluted wound heat exchange tube of claim 1 wherein: the spiral angles of the threads on the outer wall of the inlet section pipe body are the same.
3. The internally ribbed externally fluted wound heat exchange tube of claim 1 wherein: the spiral angles of the threads on the outer wall of the outlet section pipe body are the same.
4. The internally ribbed externally fluted wound heat exchange tube of claim 1 wherein: the thread direction of the outer wall of the pipe body is opposite to the winding rotation direction of the pipe body in the spiral winding section part.
5. The internally ribbed externally fluted wound heat exchange tube of claim 1 wherein: the screw pitches of the outer walls of the pipe bodies are equal.
6. The internally ribbed externally fluted wound heat exchange tube of claim 1 wherein: the cross section of the tube body of the inner rib outer groove wound heat exchange tube is circular.
7. The internally ribbed externally fluted wound heat exchange tube of claim 1 wherein: the winding direction of the inner rib component is matched with the winding direction of the threads on the outer wall of the pipe body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837361.XU CN210533143U (en) | 2019-06-04 | 2019-06-04 | Inner rib outer groove winding heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837361.XU CN210533143U (en) | 2019-06-04 | 2019-06-04 | Inner rib outer groove winding heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210533143U true CN210533143U (en) | 2020-05-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920837361.XU Active CN210533143U (en) | 2019-06-04 | 2019-06-04 | Inner rib outer groove winding heat exchange tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210533143U (en) |
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2019
- 2019-06-04 CN CN201920837361.XU patent/CN210533143U/en active Active
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