CN203132413U - Heat exchanger tube bundle with reinforced heat transfer - Google Patents
Heat exchanger tube bundle with reinforced heat transfer Download PDFInfo
- Publication number
- CN203132413U CN203132413U CN 201320123691 CN201320123691U CN203132413U CN 203132413 U CN203132413 U CN 203132413U CN 201320123691 CN201320123691 CN 201320123691 CN 201320123691 U CN201320123691 U CN 201320123691U CN 203132413 U CN203132413 U CN 203132413U
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- Prior art keywords
- tube
- heat exchanger
- exchanger tube
- heat
- heat exchange
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Abstract
The utility model discloses a heat exchanger tube bundle with reinforced heat transfer. The heat exchanger tube bundle comprises tube plates, heat exchange tubes, baffle plates, spacing pipes and a pull bar, wherein the heat exchange tube is connected with the tube plates at both ends after passing through baffle plates, the baffle plates between the tube bundles are separated at certain intervals with spacing pipes, and the tube bundles are fixed with the pull bar to support the entire tube bundle. The heat exchanger tube bundle is supported by rounded baffle plates, and square holes serving as heat exchange tube holes are arranged on the baffle plates. Cross circulation grooves are arranged on the pipe bridges of the baffle plates, and the heat exchange tubes employ thread groove tube heat exchange tube with internal and external helixes. The heat exchanger tube bundle increases thermal coefficient, improves heat exchange effect, and has scale prevention and removing functions. The heat exchanger tube bundle saves space, occupies small area, and has high practical use value.
Description
One, technical field
The utility model belongs to technical field of heat exchangers, is specifically related to a kind of heat exchanger tube.
Two, background technology
Shell-and-tube heat exchanger is still petroleum chemical industry at present and uses the most general heat-exchange device.Current its heat exchange Research on effect is mainly concentrated on two aspects: the one, develop new heat exchanger kind, as the heat exchanger of some close-coupleds; The 2nd, shell-and-tube heat exchanger is adopted various augmentation of heat transfer measures.Conventional tube shell heat exchanger shell-side good heat transfer effect obtains by at shell-side segmental baffle being set.This structure applications time is long, and technology is comparative maturity also, but this shell-side supporting construction and fluid-flow mode exist many defectives: cause heat exchanger failure as easy excitated tube bundle vibration; Flow resistance is bigger, often surpasses the allowable pressure drop value; Shell-side flows to exist and washes away inadequate flow dead, and the local coefficient of heat transfer is very low in the dead band, so the heating surface utilization rate is not high, causes the whole coefficient of heat transfer to reduce, and easy incrustation in the dead band threatens the safe operation of heat transmission equipment simultaneously.
Three, summary of the invention
The purpose of this utility model provides a kind of heat exchanger tube of augmentation of heat transfer, be intended to support the pattern of heat exchanger tube and then change the flow regime of fluid in the heat exchanger cylindrical shell by changing deflection plate, be used in combination with thread groove tube more simultaneously, to reach the purpose that improves the shell-side fluid heat transfer coefficient.
The heat exchanger tube of augmentation of heat transfer is made up of tube sheet, heat exchanger tube, deflection plate, distance sink tube and pull bar, heat exchanger tube passes the several piece deflection plate and links to each other with the tube sheet at two ends, in the middle of tube bank, with distance sink tube deflection plate is separated by certain spacing, and will restrain with pull bar and to fix, in order to support whole tube bank.Heat exchanger tube adopts the deflection plate of full circle to support; Heat exchange pore on the deflection plate adopts square opening.
There is the cross circulation groove at pipe bridge place at deflection plate.
The thread groove tube heat exchanger tube that helix is arranged inside and outside heat exchanger tube adopts.
The utility model is processed into the bigger square pore of side ratio heat exchanger tube diameter with the circular heat exchange pore of common deflection plate, reprocess out " ten " font groove simultaneously in the position of pipe bridge, and then be used in combination with thread groove tube that a kind of tube wall has a spirality conduit of evagination and indent, thereby a kind of new model augmentation of heat transfer technology that fluid can be flowed along the axial screw of heat exchanger tube generally.
Compare with the heat exchanger heat exchange effect that tradition is common, this patent has following advantage:
At first, because the flow direction of fluid has been used for reference the axial flow that is similar to deflection rod heat exchanger, so when the shell-side fluid flow velocity reaches certain value, fluid is through the vortex shedding at deflection plate place and the Venturi effect at deflection plate place, produce the whirlpool wake flow at the deflection plate rear, flow rate of fluid is more big, and turbulence is more fierce, and the effect of augmentation of heat transfer is more good.After whirlpool intensity weakens, fluid produces new whirlpool and throttling again by the deflection element of back, cause rate of flow of fluid to be accelerated and the reinforcement of turbulence degree, fluid strengthens the shearing of pipe outside interlayer liquid film simultaneously, thereby make liquid film continue attenuate, so both improved heat transfer coefficient, the descaling and antiscaling effect had been arranged again.Again because contacting between deflection plate and heat exchanger tube is the line contact, so contact area is very little, and the heat transfer area utilization is abundant, has eliminated the heat transfer dead band.Owing to neither there is the crossing current resistance of tube bank, there is not transition effect repeatedly again, so that shell side pressure is fallen is very little.Therefore, vertically flowing of fluid makes advantages such as this type of heat exchanger has the heat exchange efficiency height, anti-seismic performance is good, shell-side pressure drop is low, the dirty performance of resistive connection is strong.
Secondly, because fluid is done axial flow along thread groove tube, fluid is motion in the shape of a spiral under the effect of pipe helicoid, flow velocity and flow to the generating period variation, strengthened axial mixing and the less turbulence of fluid, shell-side fluid forms the wake flow that breaks away from tube wall behind the helix contact point of the pipe of flowing through, and has increased the turbulivity of fluid self, destroyed the fluid boundary layer on the tube wall, be enhanced thereby shell side is conducted heat.While is owing to the flow regime complexity of fluid in the thread groove tube, wherein have fluid axial flow, rotatablely move and fluid is subjected to the screw thread ridge and the motion of the periodic disturbance that shows, the velocity gradient of pipe cylindrical stream has influenced the formation of pipe inner boundary layer, thereby make the boundary layer thickness attenuate, and in the boundary layer, produce disturbance, thereby make heat transfer coefficient that bigger increase be arranged.Simultaneously because the characteristic of pipe itself can enough play the augmentation of heat transfer effect simultaneously of the inside and outside both sides of pipe
Again, the processing method of thread groove tube is simple, can form with common pipe rolling and processing.Its main structure parameters has pitch P, thread depth h and pitch angle alpha will, and the thread depth h of thread groove tube compares much smaller with ips di, so that thread groove tube is made required metal consumption is few, processing cost is low.
At last, since with " ten " font flute profile of the gap of heat exchange pore and pipe bridge as pod apertures, fluid is along the tube bank axial flow during through deflection plate, fluid can be in space and " ten " font groove position of square opening around the heat exchanger tube, form aperture or adherent jet, can produce the effect of entrainmenting and take place local the mixing surrounding fluid, thereby than forming turbulent flow after making fluid leave pod apertures under the low reynolds number, the heat transfer boundary layer of attenuate jet area reaches the order ground that improves heat-transfer effect.
The utility model has not only significantly been strengthened heat transfer coefficient in the use of heat exchanger, improved the heat exchange effect, but also has anti-tartar and scale removal effect concurrently.Also have the characteristics such as space, floor space be little of saving simultaneously.Very high use value is arranged in actual applications.
Four, description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model deflection plate part;
Fig. 3 is the structural representation of thread groove tube heat exchanger tube of the present utility model.
Five, the specific embodiment
The heat exchanger tube of augmentation of heat transfer is made up of tube sheet 1, heat exchanger tube 2, deflection plate 3, distance sink tube 4 and pull bar 5, heat exchanger tube 2 passes several piece deflection plate 3 and links to each other with the tube sheet 1 at two ends, in the middle of tube bank, with distance sink tube 4 deflection plate 3 is separated by certain spacing, and will restrain with pull bar 5 fixing, in order to support whole tube bank.Heat exchanger tube adopts the deflection plate 3 of full circle to support; Heat exchange pore 6 on the deflection plate 3 adopts square opening.There is cross circulation groove 7 at pipe bridge place at deflection plate.The thread groove tube heat exchanger tube that helix is arranged inside and outside heat exchanger tube 2 adopts.Adopt at heat exchanger tube 2 two ends, and bloated-weldering-bloated type of attachment is connected with forward and backward two tube sheets 1.
Claims (4)
1. the heat exchanger tube of an augmentation of heat transfer, formed by tube sheet (1), heat exchanger tube (2), deflection plate (3), distance sink tube (4) and pull bar (5), heat exchanger tube (2) passes several piece deflection plate (3) and links to each other with the tube sheet (1) at two ends, in the middle of tube bank, with distance sink tube (4) deflection plate (3) is separated by certain spacing, and will restrain fixing with pull bar (4), in order to support whole tube bank, it is characterized in that: heat exchanger tube adopts the deflection plate (3) of full circle to support; Heat exchange pore (6) on the deflection plate (3) adopts square opening.
2. the heat exchanger tube of augmentation of heat transfer according to claim 1 is characterized in that: at the pipe bridge place of deflection plate (3) cross circulation groove (7) is arranged.
3. the heat exchanger tube of augmentation of heat transfer according to claim 1 is characterized in that: the thread groove tube heat exchanger tube that helix is arranged inside and outside heat exchanger tube (2) adopts.
4. the heat exchanger tube of augmentation of heat transfer according to claim 1 is characterized in that: heat exchanger tube (2) two ends adopt expand-type of attachment of weldering-expand is connected with forward and backward two tube sheets (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320123691 CN203132413U (en) | 2013-03-19 | 2013-03-19 | Heat exchanger tube bundle with reinforced heat transfer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320123691 CN203132413U (en) | 2013-03-19 | 2013-03-19 | Heat exchanger tube bundle with reinforced heat transfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203132413U true CN203132413U (en) | 2013-08-14 |
Family
ID=48940385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320123691 Expired - Lifetime CN203132413U (en) | 2013-03-19 | 2013-03-19 | Heat exchanger tube bundle with reinforced heat transfer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203132413U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737650A (en) * | 2016-03-07 | 2016-07-06 | 南京航空航天大学 | Spirally slotted hole plate heat exchanger and heat exchange method thereof |
| CN107255426A (en) * | 2017-08-11 | 2017-10-17 | 中冶焦耐(大连)工程技术有限公司 | The deflection element and its method of work of a kind of shell-and-tube heat exchanger |
-
2013
- 2013-03-19 CN CN 201320123691 patent/CN203132413U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105737650A (en) * | 2016-03-07 | 2016-07-06 | 南京航空航天大学 | Spirally slotted hole plate heat exchanger and heat exchange method thereof |
| CN105737650B (en) * | 2016-03-07 | 2017-07-11 | 南京航空航天大学 | Helical groove hole sheet heat exchanger and its heat-exchange method |
| CN107255426A (en) * | 2017-08-11 | 2017-10-17 | 中冶焦耐(大连)工程技术有限公司 | The deflection element and its method of work of a kind of shell-and-tube heat exchanger |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130814 |
|
| CX01 | Expiry of patent term |