CN204142073U - Double-deck heat exchanger tube - Google Patents
Double-deck heat exchanger tube Download PDFInfo
- Publication number
- CN204142073U CN204142073U CN201420431437.6U CN201420431437U CN204142073U CN 204142073 U CN204142073 U CN 204142073U CN 201420431437 U CN201420431437 U CN 201420431437U CN 204142073 U CN204142073 U CN 204142073U
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- China
- Prior art keywords
- heat exchanger
- tube
- double
- exchanger tube
- deck heat
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- Expired - Fee Related
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- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model provides a kind of double-deck heat exchanger tube, and comprise interior pipe and be sheathed on the outer tube outside interior pipe, the inwall of outer tube and the outer wall of interior pipe are fitted tightly by cold-drawing technology, and heat exchanger tube also comprises two pieces of tube sheets, and two pieces of tube sheets are set in outer tube both sides respectively.The beneficial effects of the utility model are: thinning double-deck heat exchange tube wall thickness, reduce the sealing number of times of double-pipe heat exchanger sealed pipe plate quantity and exchanger tubes and tubesheets, make it can processing technology manufacture routinely, alleviate product weight, save cost; Owing to being provided with screw thread on inner tube wall, increasing heat exchanger tube and tube fluid contact area, when not changing length and the internal diameter of heat exchanger tube, increasing heat exchanger tube heat transfer area; Outer tube arranged outside has fin and fin is provided with breach through from top to bottom, can faster discharge opeing from condensing heat-exchanging pipe, effectively increases heat exchange area, thus reaches the beneficial effect improving heat exchange efficiency.
Description
Technical field
The utility model relates to heat exchange element field, more specifically to the double-deck heat exchanger tube of one.
Background technology
Heat exchanger is in the industrial production in order to realize a kind of equipment of heat transfer process between material, has a wide range of applications in all conglomeraties such as people's daily life and oil, chemical industry, power, medicine.Heat exchanger tube is heat exchange element common in shell-and-tube heat exchanger and fin-tube type heat exchanger, it is the one of the main reasons that heat exchanger lost efficacy that heat exchanger tube leaks, the reason causing heat exchanger tube to leak mainly contains stress corrosion, etching pit and material defect, usually come across copper-alloy pipe-material, duralumin and some containing chromium steel alloy in, this is determined by material itself, even if be also difficult to avoid by technology for detection, when there is above-mentioned defect in heat exchanger tube, crackle and sand holes will be there are, cause heat exchanger tube to leak.
At present, the harmfulness such as, toxic gas inflammable and explosive for chemical industry are large, seal requires high heat exchanger product, all require that heat exchanger tube adopts expanded joint double pipe structure.This version is obtained by inside and outside two heat exchanger tube expanded joints, namely when controlling caliber and wall thickness, being penetrated by pipe with small pipe diameter heat exchanger tube in Large Diameter Pipeline heat exchanger tube, dilating interior pipe by tube expander, inner and outer tubes are fitted tightly.The double-deck heat exchanger tube that inner and outer tubes fit tightly, can reduce stress burn into etching pit and material defect produces the probability leaked, and increases substantially heat exchanger tube reliability.But the double-deck heat exchanger tube of this expanded joint is in heat exchanger assembling, it is one-sided must utilize two pieces of tube sheets to adopt twice expanding joint process to seal respectively with inner and outer tubes, and be subject to the limitation of processing technology, the minimum applicable caliber of interior pipe is 10mm, wall thickness is minimum is 0.6mm, the minimum wall thickness (MINI W.) of the double-deck heat exchanger tube after inner and outer tubes secondary operations compound expanded joint is greater than 1.0mm, not only increases weight of equipment and processing cost, and limits the scope of application of double-deck heat exchanger tube.
Summary of the invention
The utility model overcomes deficiency of the prior art, provides a kind of double-deck heat exchanger tube.
The purpose of this utility model is achieved by following technical proposals.
A kind of double-deck heat exchanger tube, comprise interior pipe and be sheathed on the outer tube outside described interior pipe, the inwall of described outer tube and the outer wall of described interior pipe are fitted tightly by cold-drawing technology, and described heat exchanger tube also comprises two pieces of tube sheets, and described two pieces of tube sheets are set in described outer tube both sides respectively.
Described double-deck heat exchanger tube is by expanded joint mode and two pieces of tube sheet compact siro spinning technology.
Described outer tube outer wall is provided with several independently fins, described fin around short transverse central shaft circumference distortion, in pyramid shaped.
Described fin outer surface is made up of four triangular surface, the bottom of described fin be projected as right-angled trapezium.
Described four triangle outer surfaces are 5-80 ° around the maximum circumferential windup-degree of central shaft.
Described fin is provided with breach, and the height of described breach equals the height of described fin.
Described inner tube wall is provided with screw thread, and described screw thread is for intersecting screw thread.
Described screw thread is bull intersection screw thread.
Described interior pipe two ends are provided with threadless light pipe section.
The beneficial effects of the utility model are: after adopting technique scheme, can thinning double-deck heat exchange tube wall thickness, reduce the sealing number of times of double-pipe heat exchanger sealed pipe plate quantity and exchanger tubes and tubesheets, make to adopt the heat exchanger of double-deck heat exchanger tube can processing technology manufacture routinely, alleviate product weight, save manufacturing cost; Owing to being provided with screw thread on inner tube wall, effectively increase the contact area of heat exchanger tube and tube fluid, when not changing length and the internal diameter of heat exchanger tube, add the heat transfer area of heat exchanger tube, and intersect the inner wall coarse of thread heat exchange pipe, under the operating mode of low reynolds number, easily form turbulent flow, therefore heat exchange efficiency is higher; Outer tube outer wall is provided with fin and fin is provided with breach through from top to bottom, can faster discharge opeing from condensing heat-exchanging pipe, effectively increases heat exchange area, thus reaches the beneficial effect improving heat exchange efficiency.
Accompanying drawing explanation
Fig. 1 is the double-deck outer tube of heat exchanger tube of the utility model and the structural representation of interior pipe;
Fig. 2 is the structural representation of the utility model outer tube outer wall;
Fig. 3 is the partial enlarged drawing of the utility model outer tube outer wall;
Fig. 4 is the structural representation of the utility model inner tube wall.
In figure: 1, outer tube, 2, interior pipe, 3, fin, 4, screw thread, 5, light pipe section.
Detailed description of the invention
Below by specific embodiment, the technical solution of the utility model is further described.
Embodiment 1
A kind of double-deck heat exchanger tube, the inwall of outer tube 1 and the outer wall of interior pipe 2 are fitted tightly by cold-drawing technology, form single double-deck heat exchanger tube.After the extruding, cold-drawn of fixed mould, external diameter and the wall thickness of double-deck heat exchanger tube all there occurs change, are obtained the heat exchanger tube of different tube diameters and wall thickness by the size adjusting processing mold.
Little Φ 12X0.8cm is about by the physical dimension of the of the present utility model double-deck heat exchanger tube of cold drawn forming, double-deck exchanger tubes and tubesheets connects needs two pieces of tube sheets, completed by an expanded joint, the Hermetical connecting structure of double-deck exchanger tubes and tubesheets, comprise pair of lamina heat exchanger tube and two pieces of tube sheets, two pieces of tube sheets are set in double-deck heat exchanger tube outer tube 1 both sides respectively, and wherein, double-deck heat exchanger tube is by expanded joint mode and tube sheet compact siro spinning technology.
Outside double-deck heat exchanger tube outer tube 1, two ends are light section, its effect is after heat exchanger tube is through the both sides end plate of shell and tube exchanger, closely can fix with end plate, its length is equal with end plate thickness, outer tube 1 light section diameter is 19mm, outer tube 1 is provided with pyramid fin 3, pyramid fin 3 is highly 1.7mm, cross pyramid height center position, and the vertical plane being parallel to the pyramid fin 3 bottom right angle trapezoidal right angle length of side counterclockwise reverses 40 °, and pyramid fin 3 is provided with the breach (not shown) highly equal with pyramid fin 3.
In double-deck heat exchanger tube inside pipe on be provided with screw thread 4, be provided with threadless light pipe section 5 at interior pipe two ends, screw thread 4 is for intersecting screw thread, and in order to obtain better heat transfer effect, preferred screw thread 4 is bull intersection screw thread.
Utilize that fixed mould extrudes, the double-deck heat exchanger tube that obtains of cold drawn forming technology can thinning pipe thickness, improve the heat-transfer effect of double-deck heat exchanger tube, alleviate heat-exchanger products weight, save manufacturing cost, to adopt the heat exchanger contrast of the double-deck heat exchanger tube of traditional expanded joint and double-deck heat exchanger tube processing and manufacturing of the present utility model respectively, the heat exchanger of the double-deck heat exchanger tube of the utility model is adopted comparatively to adopt the heat exchanger weight saving about 30% of the double-deck heat exchanger tube of traditional expanded joint, processing and manufacturing cost savings about 40%; In addition, the results showed, the double-deck hot pipe heat exchanger of traditional expanded joint of identical base tube processing and manufacturing compares with double-deck hot pipe heat exchanger of the present utility model, and the heat transfer property of double-deck heat exchanger tube of the present utility model is a little more than the double-deck heat exchanger tube of traditional expanded joint.
Embodiment 2
Outside double-deck heat exchanger tube outer tube 1, two ends are light section, its effect is after heat exchanger tube is through the both sides end plate of shell and tube exchanger, closely can fix with end plate, its length is equal with end plate thickness, outer tube 1 light section diameter is 15mm, outer tube 1 is provided with pyramid fin 3, pyramid fin 3 is highly 1.5mm, cross pyramid height center position, and the vertical plane being parallel to the pyramid fin 3 bottom right angle trapezoidal right angle length of side counterclockwise reverses 5 °, pyramid fin 3 is provided with the breach (not shown) highly equal with pyramid fin 3, all the other arrange same embodiment 1.
Embodiment 3
Outside double-deck heat exchanger tube outer tube 1, two ends are light section, its effect is after heat exchanger tube is through the both sides end plate of shell and tube exchanger, closely can fix with end plate, its length is equal with end plate thickness, outer tube 1 light section diameter is 25mm, outer tube 1 is provided with pyramid fin 3, pyramid fin 3 is highly 2.5mm, cross pyramid height center position, and the vertical plane being parallel to the pyramid fin 3 bottom right angle trapezoidal right angle length of side counterclockwise reverses 80 °, pyramid fin 3 is provided with the breach (not shown) highly equal with pyramid fin 3, all the other arrange same embodiment 1.
Above three embodiments of the present utility model have been described in detail, but described content being only preferred embodiment of the present utility model, can not being considered to for limiting practical range of the present utility model.All equalizations done according to the utility model application range change and improve, and all should still belong within patent covering scope of the present utility model.
Claims (8)
1. a double-deck heat exchanger tube, it is characterized in that: comprise interior pipe (2) and be sheathed on described interior pipe (2) outer tube outward (1), the inwall of described outer tube (1) and the outer wall of described interior pipe (2) are fitted tightly by cold-drawing technology, described heat exchanger tube also comprises two pieces of tube sheets, and described two pieces of tube sheets are set in described outer tube (1) both sides respectively.
2. double-deck heat exchanger tube according to claim 1, is characterized in that: described double-deck heat exchanger tube is by expanded joint mode and two pieces of tube sheet compact siro spinning technology.
3. double-deck heat exchanger tube according to claim 2, it is characterized in that: described outer tube (1) outer wall is provided with several independently fins (3), described fin (3) around short transverse central shaft circumference distortion, in pyramid shaped.
4. double-deck heat exchanger tube according to claim 3, is characterized in that: described fin (3) outer surface is made up of four triangular surface, the bottom of described fin (3) be projected as right-angled trapezium.
5. double-deck heat exchanger tube according to claim 4, is characterized in that: described four triangle outer surfaces are 5-80 ° around the maximum circumferential windup-degree of central shaft.
6. double-deck heat exchanger tube according to claim 5, is characterized in that: (3) are provided with breach to described fin, and the height of described breach equals the height of described fin (3).
7. according to the arbitrary described double-deck heat exchanger tube of claim 1 to 6, it is characterized in that: described inner tube wall is provided with screw thread (4), described screw thread (4) is for intersecting screw thread.
8. double-deck heat exchanger tube according to claim 7, is characterized in that: described screw thread (4) is bull intersection screw thread, and described interior pipe (2) two ends are provided with threadless light pipe section (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431437.6U CN204142073U (en) | 2014-07-30 | 2014-07-30 | Double-deck heat exchanger tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420431437.6U CN204142073U (en) | 2014-07-30 | 2014-07-30 | Double-deck heat exchanger tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204142073U true CN204142073U (en) | 2015-02-04 |
Family
ID=52418754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420431437.6U Expired - Fee Related CN204142073U (en) | 2014-07-30 | 2014-07-30 | Double-deck heat exchanger tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204142073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643272A (en) * | 2016-11-15 | 2017-05-10 | 杭州创屹机电科技有限公司 | Heat exchange pipe |
| CN106679492A (en) * | 2016-11-15 | 2017-05-17 | 杭州创屹机电科技有限公司 | Heat exchange pipe |
-
2014
- 2014-07-30 CN CN201420431437.6U patent/CN204142073U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106643272A (en) * | 2016-11-15 | 2017-05-10 | 杭州创屹机电科技有限公司 | Heat exchange pipe |
| CN106679492A (en) * | 2016-11-15 | 2017-05-17 | 杭州创屹机电科技有限公司 | Heat exchange pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20210730 |