CN203454886U - Helical corrugated tube - Google Patents
Helical corrugated tube Download PDFInfo
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- CN203454886U CN203454886U CN201320441444.XU CN201320441444U CN203454886U CN 203454886 U CN203454886 U CN 203454886U CN 201320441444 U CN201320441444 U CN 201320441444U CN 203454886 U CN203454886 U CN 203454886U
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- helical
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- helical groove
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Abstract
The utility model discloses a helical corrugated tube. The helical corrugated tube comprises a tube body and helical grooves which are formed in the outer wall of the tube body, wherein helical convex ribs corresponding to the helical grooves are arranged on the inner wall of the tube body, the external diameter r of the tube body is 15-50mm and is 2-3 times of the screw pitch d2 of each helical groove, the thickness h1of the wall of the tube body is 1.5-3mm and is 1.8-2.2 times of the depth h2 of each helical groove, and the width d1 of threads of each helical groove is 3-4 times of the depth h2 of the helical groove. The helical corrugated tube is high in heat exchanging efficiency and high in mechanical strength and can be applied to a heat exchanger or a condenser.
Description
Technical field
The utility model relates to a kind of heat exchanger tube, relates in particular to helical bellows, is specifically applicable to improve the design's mechanical strength and heat exchanger effectiveness.
Background technology
Heat exchanger tube is the strength member of existing heat-exchange device, and the heat exchanger tube that domestic and international most of heat transmission equipments use is pipe or elliptical tube.The inner and outer wall of existing heat exchanger tube is generally coaxial and the parallel face of cylinder or elliptic cylinder, because the internal face of this heat exchanger tube is parallel to the axis of heat exchanger tube all the time, make the fluid by heat exchanger tube, be difficult for forming turbulent flow, thereby affect the heat exchange of fluid and heat exchanger tube internal face.
Chinese patent application publication No. is CN102072683A, and Shen Qing Publication day is that the patent of invention on May 25th, 2011 discloses heat-transfer pipe, heat exchanger and heat-transfer pipe workpiece.Heat-transfer pipe has the supervisor of inner peripheral surface and outer peripheral face; Thereby and the spiral helicine protuberance that is formed at supervisor's inner peripheral surface by form spiral helicine wave groove at outer peripheral face, the height that supervisor's inner peripheral surface has a protuberance is periodically variable region respectively.Although this invention can make to increase the heat transfer efficiency of heat exchanger tube, still there is following defect in it:
1, the pipe thickness of this invention is less, causes its mechanical strength lower, and deformation easily occurs, and cannot be applied in heat exchanger, condenser.
Summary of the invention
The purpose of this utility model is to overcome that the mechanical strength existing in prior art is low, the problem of easy deformation, and the helical bellows that a kind of mechanical strength is high, be difficult for deformation is provided.
For realizing above object, technical solution of the present utility model is:
Helical bellows, comprise the helical groove that body and outer wall thereof arrange, on described inboard wall of tube body, be formed with the spiral fin corresponding with helical groove, the external diameter r of described body is 50 millimeters of 15 milli rice –, and the external diameter r of body is 3 times of 2 times of – of the pitch d2 of helical groove;
The wall thickness h1 of the tube wall of described body is 3 millimeters of 1.5 Hao meter –, and the wall thickness h1 of described tube wall is 2.2 times of the 1.8 Bei – of the groove depth h2 of helical groove, and the width of thread d1 of helical groove is 4 times of the 3 Bei – of its groove depth h2.
The external diameter r of described body is 18 millimeters of 15 Hao meter –, and the wall thickness h1 of the tube wall of described body is 1.5 millimeters, and the wall thickness h1 of described tube wall is 2.2 times of the 2 Bei – of the groove depth h2 of helical groove, and the width of thread d1 of helical groove is 3.5 times of the 3 Bei – of its groove depth h2.
The external diameter r of described body is 27 millimeters of 19 Hao meter –, and the wall thickness h1 of the tube wall of described body is 2 millimeters, and the wall thickness h1 of described tube wall is 2.1 times of the 1.9 Bei – of the groove depth h2 of helical groove, and the width of thread d1 of helical groove is 3.7 times of the 3.2 Bei – of its groove depth h2.
The external diameter r of described body is 42 millimeters of 28 Hao meter –, and the wall thickness h1 of the tube wall of described body is 2.5 millimeters, and the wall thickness h1 of described tube wall is 2 times of the 1.8 Bei – of the groove depth h2 of helical groove, and the width of thread d1 of helical groove is 3.8 times of the 3.3 Bei – of its groove depth h2.
The external diameter r of described body is 50 millimeters of 43 Hao meter –, and the wall thickness h1 of the tube wall of described body is 3 millimeters, and the wall thickness h1 of described tube wall is 2 times of the 1.8 Bei – of the groove depth h2 of helical groove 2, and the width of thread d1 of helical groove is 4 times of the 3.5 Bei – of its groove depth h2.
Compared with prior art, the beneficial effects of the utility model are:
1, in the utility model helical bellows, the wall thickness h1 of tube wall is 2.2 times of 1.8 times of – of the groove depth h2 of helical groove, and too shallow as helical groove rolling cannot form spiral fin on inboard wall of tube body; Too dark as helical groove rolling, can impact the mechanical strength of body, and deformation easily occurs.And the groove depth of the design's helical groove is when guaranteeing mechanical strength, make inboard wall of tube body be formed with corresponding spiral fin.Tube fluid is subject to the guiding of spiral fin, makes along spiral fin, to rotate to form stronger turbulent flow near a part of fluid of wall, has reduced the thickness of border delay fluid layer; Another part fluid, along the axial flow of body, is subject to the periodic disturbance of spiral fin to its generation simultaneously, thereby the heat transfer of monophasic fluid in enhanced tube reaches the effect that improves heat exchanger effectiveness.Therefore, the design's mechanical strength is large, heat exchanger effectiveness is high.
2, the design of helical groove on the utility model helical bellows middle tube body, when extratubal fluid is gaseous state, gaseous fluid is condensed into liquid state on tube wall, and helical groove has the effect of converging condensed fluid, when liquid focuses on, pool drop when a certain amount of and flow to body bottom drippage along helical groove, make condensate liquid discharge, condensate film attenuation, thereby reduce thermal resistance, improve condensation heat transfer coefficient.Therefore, the design has minimizing thermal resistance, improves the effect of condensation heat transfer coefficient.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of helical groove in Fig. 1.
In figure: body 1, tube wall 11, helical groove 2, spiral fin 3;
In Fig. 1: r is that the external diameter of body 1, the wall thickness that h1 is tube wall 11, the groove depth that h2 is helical groove 2, the width of thread, the d2 that d1 is helical groove 2 are the pitch of helical groove 2.
The specific embodiment
Below in conjunction with accompanying drawing explanation and the specific embodiment, the utility model is described in further detail.
Referring to figure 1 – Fig. 2, helical bellows, comprise the helical groove 2 that body 1 and outer wall thereof arrange, on described body 1 inwall, be formed with the spiral fin 3 corresponding with helical groove 2, the external diameter r of described body 1 is 50 millimeters of 15 Hao meter –, and the external diameter r of body 1 is 3 times of the 2 Bei – of the pitch d2 of helical groove 2;
The wall thickness h1 of the tube wall 11 of described body 1 is 3 millimeters of 1.5 Hao meter –, and the wall thickness h1 of described tube wall 11 is 2.2 times of 1.8 Bei – of the groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 4 times of 3 Bei – of its groove depth h2.
The external diameter r of described body 1 is 18 millimeters of 15 Hao meter –, the wall thickness h1 of the tube wall 11 of described body 1 is 1.5 millimeters, the wall thickness h1 of described tube wall 11 is 2.2 times of 2 Bei – of the groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.5 times of 3 Bei – of its groove depth h2.
The external diameter r of described body 1 is 27 millimeters of 19 Hao meter –, the wall thickness h1 of the tube wall 11 of described body 1 is 2 millimeters, the wall thickness h1 of described tube wall 11 is 2.1 times of 1.9 Bei – of the groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.7 times of 3.2 Bei – of its groove depth h2.
The external diameter r of described body 1 is 42 millimeters of 28 Hao meter –, the wall thickness h1 of the tube wall 11 of described body 1 is 2.5 millimeters, the wall thickness h1 of described tube wall 11 is 2 times of 1.8 Bei – of the groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.8 times of 3.3 Bei – of its groove depth h2.
The external diameter r of described body 1 is 50 millimeters of 43 Hao meter –, the wall thickness h1 of the tube wall 11 of described body 1 is 3 millimeters, the wall thickness h1 of described tube wall 11 is 2 times of 1.8 Bei – of the groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 4 times of 3.5 Bei – of its groove depth h2.
Principle of the present utility model is described as follows:
Spiral fin 3: tube fluid is subject to the guiding of spiral prominence 3, makes along spiral fin 3, to rotate to form stronger turbulent flow near a part of fluid of wall, has reduced the thickness of pipe inner boundary place delay fluid layer; Another part fluid, along the axial flow of body 1, is subject to the periodic disturbance of spiral fin 3 to its generation simultaneously, strengthens flowing of liquid in pipe, thereby the heat transfer of monophasic fluid in enhanced tube reaches the effect that improves heat exchanger effectiveness.
Embodiment 1:
Helical bellows, comprise the helical groove 2 that body 1 and outer wall thereof arrange, on described body 1 inwall, be formed with the spiral fin 3 corresponding with helical groove 2, the external diameter r of described body 1 is 18 millimeters, the wall thickness h1 of the tube wall 11 of described body 1 is 1.5 millimeters, the external diameter r of body 1 is 3 times of pitch d2 of helical groove 2, and the wall thickness h1 of described tube wall 11 is 2 times of groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.5 times of its groove depth h2.
Embodiment 2:
The external diameter r of described body 1 is 25 millimeters, the external diameter r of described body 1 is 2.9 times of pitch d2 of helical groove 2, the wall thickness h1 of the tube wall 11 of described body 1 is 2 millimeters, the wall thickness h1 of described tube wall 11 is 2 times of groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.5 times of its groove depth h2.
Embodiment 3:
The external diameter r of described body 1 is 30 millimeters, the external diameter r of described body 1 is 2.5 times of pitch d2 of helical groove 2, the wall thickness h1 of the tube wall 11 of described body 1 is 2.5 millimeters, the wall thickness h1 of described tube wall 11 is 1.9 times of groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.7 times of its groove depth h2.
Embodiment 4:
Embodiment 4 is substantially the same manner as Example 1, and its difference is:
The external diameter r of described body 1 is 50 millimeters, the external diameter r of described body 1 is 2.5 times of pitch d2 of helical groove 2, the wall thickness h1 of the tube wall 11 of described body 1 is 3 millimeters, the wall thickness h1 of described tube wall 11 is 1.8 times of groove depth h2 of helical groove 2, and the width of thread d1 of helical groove 2 is 3.6 times of its groove depth h2.
Claims (5)
1. helical bellows, comprises the helical groove (2) that body (1) and outer wall thereof arrange, and is formed with the spiral fin (3) corresponding with helical groove (2) on described body (1) inwall, it is characterized in that:
The external diameter (r) of described body (1) is 50 millimeters of 15 Hao meter –, and the external diameter (r) of body (1) is 3 times of the 2 Bei – of the pitch (d2) of helical groove (2);
The wall thickness (h1) of the tube wall (11) of described body (1) is 3 millimeters of 1.5 Hao meter –, the wall thickness (h1) of described tube wall (11) is 2.2 times of the 1.8 Bei – of the groove depth (h2) of helical groove (2), and the width of thread (d1) of helical groove (2) is 4 times of the 3 Bei – of its groove depth (h2).
2. helical bellows according to claim 1, it is characterized in that: the external diameter (r) of described body (1) is 18 millimeters of 15 Hao meter –, the wall thickness (h1) of the tube wall (11) of described body (1) is 1.5 millimeters, the wall thickness (h1) of described tube wall (11) is 2.2 times of the 2 Bei – of the groove depth (h2) of helical groove (2), and the width of thread (d1) of helical groove (2) is 3.5 times of the 3 Bei – of its groove depth (h2).
3. helical bellows according to claim 1, it is characterized in that: the external diameter (r) of described body (1) is 27 millimeters of 19 Hao meter –, the wall thickness (h1) of the tube wall (11) of described body (1) is 2 millimeters, the wall thickness (h1) of described tube wall (11) is 2.1 times of the 1.9 Bei – of the groove depth (h2) of helical groove (2), and the width of thread (d1) of helical groove (2) is 3.7 times of the 3.2 Bei – of its groove depth (h2).
4. helical bellows according to claim 1, it is characterized in that: the external diameter (r) of described body (1) is 42 millimeters of 28 Hao meter –, the wall thickness (h1) of the tube wall (11) of described body (1) is 2.5 millimeters, the wall thickness (h1) of described tube wall (11) is 2 times of the 1.8 Bei – of the groove depth (h2) of helical groove (2), and the width of thread (d1) of helical groove (2) is 3.8 times of the 3.3 Bei – of its groove depth (h2).
5. helical bellows according to claim 1, it is characterized in that: the external diameter (r) of described body (1) is 50 millimeters of 43 Hao meter –, the wall thickness (h1) of the tube wall (11) of described body (1) is 3 millimeters, the wall thickness (h1) of described tube wall (11) is 2 times of the 1.8 Bei – of the groove depth (h2) of helical groove (2), and the width of thread (d1) of helical groove (2) is 4 times of the 3.5 Bei – of its groove depth (h2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441444.XU CN203454886U (en) | 2013-07-24 | 2013-07-24 | Helical corrugated tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320441444.XU CN203454886U (en) | 2013-07-24 | 2013-07-24 | Helical corrugated tube |
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| Publication Number | Publication Date |
|---|---|
| CN203454886U true CN203454886U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320441444.XU Expired - Lifetime CN203454886U (en) | 2013-07-24 | 2013-07-24 | Helical corrugated tube |
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| Country | Link |
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| CN (1) | CN203454886U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241292A (en) * | 2015-10-13 | 2016-01-13 | 丽水学院 | Multi-longitudinal-vortex sine/cosine-line enhanced heat transferring tube |
| CN109612313A (en) * | 2018-11-19 | 2019-04-12 | 江西省工业陶瓷工程技术研究中心 | A kind of heat exchanger complex heat transfer pipe for waste heat recycling |
-
2013
- 2013-07-24 CN CN201320441444.XU patent/CN203454886U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105241292A (en) * | 2015-10-13 | 2016-01-13 | 丽水学院 | Multi-longitudinal-vortex sine/cosine-line enhanced heat transferring tube |
| CN109612313A (en) * | 2018-11-19 | 2019-04-12 | 江西省工业陶瓷工程技术研究中心 | A kind of heat exchanger complex heat transfer pipe for waste heat recycling |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |
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| CX01 | Expiry of patent term |