CN201344746Y - Shell-and-tube heat exchanger with relatively high heat exchange efficiency - Google Patents
Shell-and-tube heat exchanger with relatively high heat exchange efficiency Download PDFInfo
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- CN201344746Y CN201344746Y CNU2009201013215U CN200920101321U CN201344746Y CN 201344746 Y CN201344746 Y CN 201344746Y CN U2009201013215 U CNU2009201013215 U CN U2009201013215U CN 200920101321 U CN200920101321 U CN 200920101321U CN 201344746 Y CN201344746 Y CN 201344746Y
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- heat exchanger
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- heat exchange
- shell
- helical fin
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Abstract
A shell-and-tube heat exchanger with relatively high heat exchange efficiency belongs to the technical field of heat exchange, and is used for improving the heat exchange efficiency of shell-and-tube heat exchangers. The shell-and-tube heat exchanger comprises a casing and a heat exchange pipe which is arranged in the casing, and is characterized after being improved in that spiral fins are arranged in the heat exchange pipe along the length direction thereof; and the outside diameter of each spiral fin is matched with the inside diameter of the pipe body of the heat exchange pipe. The shell-and-tube heat exchanger is mainly characterized in that: firstly, a secondary vortex flow is generated in fluid when the fluid rotates under the diversion of the spiral fins, so as to break off the balance of a boundary layer, thereby improving the turbulence intensity of the fluid and achieving the purpose of heat transfer enhancement; secondly, the spiral fins can be placed in or taken off from a pipe conveniently, so that the sediment incrustation is reduced, and the sediment incrustation can be easily removed; and thirdly, the spiral fins and the heat exchange pipes can be formed with various screw pitches and thicknesses, the heat exchanger is suitable for different mediums, and the applicable pressure and temperature ranges are wide.
Description
Technical field
The utility model relates to a kind of heat exchanger, particularly is applicable to gas-gas, the heat exchange of solution-air medium, has the high-performance heat exchanger of higher heat exchange efficiency, belongs to technical field of heat exchange.
Background technology
Heat transmission equipment is chemical industry, oil refining, power, food, light industry, atomic energy, pharmacy, machinery and the widely used a kind of equipment of other many industrial departments.In chemical enterprise, the investment of heat transmission equipment accounts for 10%～20% of gross investment; In oil refining enterprise, account for 35%～40% of gross investment.To be subjected to the influence of worldwide energy crisis, in order cutting down the consumption of energy, to be accompanied by increasing sharply of heat exchanging device demand in the industrial production, the performance requirement of heat exchanging device is also more and more higher.
In recent years, although used the high-efficiency heat exchanger equipment of compact conformation in some field, for example: corrugated plating heat exchanger, plate-fin heat exchanger, spiral-plate heat exchanger etc., but in heat transmission equipment, shell-and-tube heat exchanger is still in occupation of leading position, its height reliability and extensive adaptability are that other high-performance heat exchanger is irreplaceable.Many technical process all have characteristics such as high temperature, high pressure, high vacuum, high corrosion, that selection range is wide, heat exchange surface cleans is convenient, adaptability is strong, disposal ability is big and advantage such as high temperature resistant, high pressure resistant and shell-and-tube heat exchanger has, so shell-and-tube heat exchanger still is widely used in chemical industry, oil refining, petrochemical industry, pharmacy, nuclear power and other the many industry.For improving the exchange capability of heat of shell-and-tube heat exchanger, the method of augmentation of heat transfer efficient commonly used is to process ripple at tube wall at present, but this method has following weak point: 1. bellows: corrugated tube adopts stainless steel, because of its shape is limit, when material flows, easily be deposited on wave bottom, therefore in the corrugated tube of horizontal equipment, corrugated tube heat exchanger can only be selected vertical structure for use, and horizontal type structure should not adopt; 2. screwed pipe: in the screwed pipe pipe material disturbance little, heat exchange efficiency is low, the heat exchange effect is undesirable.
Summary of the invention
The utility model is used to overcome the defective of above-mentioned prior art and the efficient shell-and-tube heat exchanger of the augmentation of heat transfer of a kind of simple in structure, good effect of heat exchange, easy cleaning scale removal is provided.
The alleged problem of the utility model solves by the following technical programs:
A kind of shell-and-tube heat exchanger with higher heat exchange efficiency, comprise housing in the formation and be arranged on the interior heat exchanger tube of housing, its special feature is: be provided with helical fin along its length direction in the described heat exchanger tube, helical fin external diameter and heat exchanger tube body internal diameter size coupling.
Above-mentioned shell-and-tube heat exchanger with higher heat exchange efficiency, described helical fin center is provided with central shaft, and helical fin is around being fixed on the central shaft periphery.
Above-mentioned shell-and-tube heat exchanger with higher heat exchange efficiency, described helical fin are single-wire helix, and helical fin pitch is 0.2～10 with heat exchanger tube internal diameter ratio, fin thickness 2mm～40mm, and the gap between internal diameter of tube body and helical fin external diameter is 1～10mm.
Above-mentioned shell-and-tube heat exchanger with higher heat exchange efficiency, in parallel or series connection between described each heat exchanger tube (2) that is arranged in the housing.
Main element heat exchange tube structure in the utility model heat exchanging device is improved, in body, increase helical fin, make the interior medium of pipe, thereby increased the heat transfer area of heat-exchange apparatus along spiral motion, increased the turbulent extent and the flow process of fluid, diabatic process is strengthened.Its main feature is as follows: produce rotation under the water conservancy diversion at helical fin when fluid flows in pipe 1., the inner secondary eddy current that produces of fluid under the action of centrifugal force that rotation produces, destroy the balance in boundary layer, thereby improve the turbulence intensity of fluid, and then reach the purpose of augmentation of heat transfer; 2. helical fin is simple in structure, practical, it can be put into pipe easily or take out, and can be pre-processed, to existing shell-and-tube heat exchanger transformation and remove in the pipe aspect such as dirt its special advantages is arranged: owing to heat exchanger tube body inner wall smooth, compare less scalingly with screwed pipe with bellows, after the fouling helical fin and fixed axis are extracted out and can easily the wall dirt be removed; 3. can be made into the helical fin and the heat exchanger tube of different pitch, thickness, be applicable to different medium, its suitable P-T region is wide.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is Figure 1A portion partial enlarged view;
Fig. 3 is another example structure schematic diagram of the utility model.
Label is expressed as follows in the accompanying drawing: 1. housing; 2. heat exchanger tube; 2-1. body; 2-2. central shaft; 2-3. helical fin; 3. tube sheet; 4. hydraulic barrier; 5. the chamber of confluxing.
The specific embodiment
Referring to Fig. 1, the utility model is a kind of shell-and-tube heat exchanger, its formation comprises housing 1, heat exchanger tube 2, tube sheet 3 and hydraulic barrier 4, heat exchanger tube is bundle and is arranged in parallel in housing, its two ends are fixed on the tube sheet, for improving the heat transfer coefficient of extratubal fluid, hydraulic barrier is installed in the housing, in case the short circuit of fluid stopping body, increase fluid velocity, and force fluid path flow according to the rules, improve the efficient that heat is transmitted.
Referring to Fig. 2, main feature of the present utility model is to be provided with helical fin 2-3 along its length direction in heat exchanger tube body 2-1, helical fin external diameter and heat exchanger tube internal diameter size coupling.The helical fin center is provided with central shaft, and helical fin is around being fixed on central shaft 2-2 periphery, and both connect as one, and together are inlaid in the body of heat exchanger tube.After this design makes fluid enter heat exchanger tube, to move along the helical flow path that helical fin constitutes, the centrifugal force convection cell that the helical flow path that is made of helical fin produces produces disturbance, make medium form a vortex, have bigger velocity gradient from the center of circle to the radial direction, the tube surface turbulization makes the boundary layer attenuate, thereby improved heat transfer coefficient, reached the purpose of augmentation of heat transfer.The utility model helical fin and body are the split assembly structure, helical fin is pre-processed, can be pressed in (or being fixed) body easily or from body, take out, inboard wall of tube body is a shiny surface, less scaling, after the fouling helical fin is extracted out and can conveniently the wall dirt be removed, compare, in removing pipe, have aspect the dirt to have special advantages with corrugated tube or with the screw thread heat exchanger tube.
Helical fin described in the utility model is a single-wire helix, and the heat exchanger tube internal diameter is 20～1000mm usually, and helical fin pitch is 0.2～10 with heat exchanger tube internal diameter ratio, fin thickness 2mm～40mm, and the gap between internal diameter of tube body and helical fin external diameter is 1～10mm.
The set-up mode of heat exchanger tube in housing can adopt parallel connection as shown in Figure 1, or adopts series connection as shown in Figure 3.Extratubal fluid is flowed out by the inflow of housing top, bottom, and tube fluid is flowed out by the inflow of housing left end, right-hand member, finishes the heat exchange of two media in flow process.
Below provide a specific embodiment:
Structure as shown in Figure 1, its formation comprises housing 1, heat exchanger tube 2, tube sheet 3 and hydraulic barrier 4, the chamber 5 of confluxing, heat exchanger tube is bundle and is arranged in parallel in housing, helical fin is a single-wire helix, heat exchanger tube internal diameter 25mm, and pitch is 2 with heat exchanger tube internal diameter ratio, fin thickness 2.5mm, the gap between internal diameter of tube body and helical fin external diameter is 0.5mm.
Claims (4)
1. shell-and-tube heat exchanger with higher heat exchange efficiency, comprise housing (1) in the formation and be arranged on the interior heat exchanger tube (2) of housing, it is characterized in that: be provided with helical fin (2-3) along its length direction in the described heat exchanger tube, helical fin external diameter and heat exchanger tube body (2-1) internal diameter size coupling.
2. the shell-and-tube heat exchanger with higher heat exchange efficiency according to claim 1 is characterized in that: described helical fin center is provided with central shaft, and helical fin is around being fixed on central shaft (2-2) periphery.
3. the shell-and-tube heat exchanger with higher heat exchange efficiency according to claim 1 and 2, it is characterized in that: described helical fin is a single-wire helix, helical fin pitch and heat exchanger tube internal diameter are than 0.2～10, fin thickness 2mm～40mm, the gap between internal diameter of tube body and helical fin external diameter is 1～10mm.
4. the shell-and-tube heat exchanger with higher heat exchange efficiency according to claim 3 is characterized in that: in parallel or series connection between described each heat exchanger tube (2) that is arranged in the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201013215U CN201344746Y (en) | 2009-01-16 | 2009-01-16 | Shell-and-tube heat exchanger with relatively high heat exchange efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201013215U CN201344746Y (en) | 2009-01-16 | 2009-01-16 | Shell-and-tube heat exchanger with relatively high heat exchange efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201344746Y true CN201344746Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201013215U Expired - Fee Related CN201344746Y (en) | 2009-01-16 | 2009-01-16 | Shell-and-tube heat exchanger with relatively high heat exchange efficiency |
Country Status (1)
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| CN (1) | CN201344746Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976513A (en) * | 2015-07-31 | 2015-10-14 | 北京市燃气集团有限责任公司 | Temperature recovery device for fluid power generation system |
| CN108731494A (en) * | 2018-06-28 | 2018-11-02 | 广东工业大学 | A kind of condenser |
| CN111093347A (en) * | 2019-12-27 | 2020-05-01 | 季华实验室 | Self-circulation efficient radiator |
-
2009
- 2009-01-16 CN CNU2009201013215U patent/CN201344746Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104976513A (en) * | 2015-07-31 | 2015-10-14 | 北京市燃气集团有限责任公司 | Temperature recovery device for fluid power generation system |
| CN108731494A (en) * | 2018-06-28 | 2018-11-02 | 广东工业大学 | A kind of condenser |
| CN108731494B (en) * | 2018-06-28 | 2019-11-12 | 广东工业大学 | A kind of condenser |
| CN111093347A (en) * | 2019-12-27 | 2020-05-01 | 季华实验室 | Self-circulation efficient radiator |
| CN111093347B (en) * | 2019-12-27 | 2021-11-09 | 季华实验室 | Self-circulation efficient radiator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20110116 |