CN211695990U - Heat exchanger with internal thread heat exchange tube - Google Patents
Heat exchanger with internal thread heat exchange tube Download PDFInfo
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- CN211695990U CN211695990U CN201922458776.9U CN201922458776U CN211695990U CN 211695990 U CN211695990 U CN 211695990U CN 201922458776 U CN201922458776 U CN 201922458776U CN 211695990 U CN211695990 U CN 211695990U
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- heat exchange
- exchange tube
- heat exchanger
- tube
- helical fin
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Abstract
The utility model discloses a heat exchanger with internal thread heat exchange tube, including heat exchanger shell, tube side import and tube side export to and shell side import and shell side export, many heat exchange tubes pass through the tube sheet at both ends and fix in the heat exchanger shell. The heat exchange tube inner wall integrated extrusion molding have the internal thread, be provided with helical fin at the center of heat exchange tube, helical fin is the heliciform, and its direction of rotation is opposite with the screw thread direction, welds on the heat exchange tube wall through the support arm on the helical fin, has a plurality of water holes of crossing on the helical fin. The utility model discloses in the structure, through set up screw thread and helical fin in the pipe, make the laminar flow form of intraductal fluid destroyed, increased the torrent degree, improve heat transfer coefficient, simultaneously, screw thread and helical fin's setting has still increased the area of contact with liquid to make fluidic flow path extension, increased its dwell time in the pipe, thereby improve heat exchange efficiency.
Description
Technical Field
The utility model belongs to the technical field of the heat exchanger, concretely relates to heat exchanger with internal thread heat exchange tube.
Background
The heat exchange equipment is generally applied to the industries of chemical industry, pharmacy, dyeing and chemical industry, metallurgy, food, environmental protection, chemical fiber and the like for various purposes, has obvious effect after being used, and is popular with wide users. Especially, heat exchange devices are frequently used in chemical production, wherein a shell and tube heat exchanger is mainly used; the tube type heat exchanger is characterized in that a plurality of heat exchange tubes are arranged in a tube barrel, the heat exchange tubes and the tube barrel are mutually independent into two spaces, and heat exchange is generated when materials with different temperatures flow through the tube barrel and the tube barrel; at present, the heat exchange tube mostly adopts a smooth wall tube, and the general heat exchange efficiency is not high. The heat exchange tube of the existing heat exchanger is externally provided with a common spiral, although the heat exchange efficiency is improved to a certain extent, the heat exchange efficiency is not obvious, meanwhile, the occupied area is increased, and the tube distribution rate is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can improve heat exchange efficiency's heat exchanger that has internal thread heat exchange tube to solve the not high problem of heat exchange efficiency of current heat exchanger.
The utility model provides an above-mentioned technical problem's technical scheme as follows: the utility model provides a heat exchanger with internal thread heat exchange tube, includes the heat exchanger shell, and heat exchanger shell both ends have tube side import and tube side export to and the shell side import and the shell side export at both ends on the lateral wall of heat exchanger shell, many heat exchange tubes pass through the tube sheet at both ends to be fixed in the heat exchanger shell, its characterized in that: the heat exchange tube inner wall integrated extrusion molding have the internal thread, be provided with helical fin at the center of heat exchange tube, helical fin is the heliciform, and its direction of rotation is opposite with the screw thread direction, welds on the heat exchange tube wall through the support arm on the helical fin, has a plurality of water holes of crossing on the helical fin.
Further: the water holes are in an oval shape, a round shape, a triangular shape, a square shape or a strip shape and are irregularly distributed on the spiral fins.
Further: the spiral fin is a spiral shape formed by reversely rotating two ends of an aluminum alloy sheet for 0.5-1 circle.
Further: the height of the internal thread is 25-30% of the radius of the heat exchange tube, and the diameter of the circle occupied by the spiral fin is 20% of the inner diameter of the heat exchange tube.
Further: the heat exchange tube is made of aluminum alloy.
Further: the support arm is S-shaped, two ends of the support arm are welded on the inner wall of the heat exchange tube close to the tube plate, and the middle of the support arm is welded with the spiral fin.
The utility model has the advantages that: the utility model discloses in the structure, through set up screw thread and helical fin in the pipe, make the laminar flow form of intraductal fluid destroyed, increased the torrent degree, improve heat transfer coefficient, simultaneously, screw thread and helical fin's setting has still increased the area of contact with liquid to make fluidic flow path extension, increased its dwell time in the pipe, thereby improve heat exchange efficiency.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the heat exchange tube of the present invention;
fig. 3 is a schematic structural diagram of the helical fin of the present invention.
The sequence numbers in the figures illustrate: 1 is tube side import, 2 is tube side export, 3 is shell side import, 4 is shell side export, 5 is the heat exchange tube, 6 is the tube sheet, 7 is the internal thread, 8 is helical fin, 9 is the support arm, 10 is the water hole of crossing.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1-3 the utility model discloses structure a heat exchanger with internal thread heat exchange tube, including the heat exchanger casing, heat exchanger casing both ends are equipped with tube side import 1 and tube side export 2, and the lateral wall both ends of heat exchanger casing are provided with shell side import 3 and shell side export 4, and many heat exchange tubes 5 are fixed in the heat exchanger casing through the tube sheet 6 at both ends. The heat exchange tube inner wall integrated extrusion molding have internal thread 7, be provided with helical fin 8 at the center of heat exchange tube, helical fin is the heliciform, and its direction of rotation is opposite with the internal thread direction, welds on the heat exchange tube wall through support arm 9 on the helical fin, has a plurality of water holes 10 of crossing on the helical fin.
Preferably: the water holes are in an oval shape, a round shape, a triangular shape, a square shape or a strip shape and are irregularly distributed on the spiral fins.
Preferably: the spiral fin is a spiral shape formed by reversely rotating two ends of an aluminum alloy sheet for 0.5-1 circle.
Preferably: the internal thread can be a groove or a bulge, if the internal thread is the bulge, the height of the internal thread is 25-30% of the radius of the heat exchange tube, and if the internal thread is the groove, the depth of the internal thread is not more than half of the wall thickness of the heat exchange tube; the diameter of the circle occupied by the spiral fins is 20% of the inner diameter of the heat exchange tube.
Preferably: the support arm is S-shaped, two ends of the support arm are welded on the inner wall of the heat exchange tube close to the tube plate, the middle of the support arm is welded with the spiral fin, and the support arm is processed by the existing cold welding process; and can also be fixed by bolt connection.
Preferably: the internal thread is multi-head and has 2-4 groups.
The utility model discloses in the structure, through set up the screw thread at the inside pipe wall, and set up reverse helical fin in the inside pipe diameter position, make intraductal rivers (also can be other suitable liquid or gaseous) no longer be the advection state, the part passes through along the screw rotation, the part passes through along the helical fin is rotatory, the turbulent characteristic that makes rivers obviously strengthens, effectively prevented when the laminar flow, only can effectively carry out the heat exchange with the partial rivers of pipe wall contact, and because of hydrothermal conductivity is poor, middle water has not effectively carried out the heat exchange and has just passed through yet, so that heat exchange efficiency has been influenced. In addition, due to the arrangement of the threads and the spiral fins, the contact area of water with the spiral fins is increased, and the heat conduction effect is also improved.
The water holes are irregularly distributed on the spiral fins, so that the influence on the water flow is further improved. The support arm is S-shaped, two ends of the support arm are welded on the inner wall of the heat exchange tube close to the tube plate, and the middle of the support arm is welded with the spiral fin. The structure has certain buffering property under the condition of ensuring the fixing strength, increases the bearing capacity of the water flow impact spiral fins, and improves the overall reliability.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
1. The utility model provides a heat exchanger with internal thread heat exchange tube, includes the heat exchanger shell, and heat exchanger shell both ends have tube side import and tube side export to and the shell side import and the shell side export at both ends on the lateral wall of heat exchanger shell, many heat exchange tubes pass through the tube sheet at both ends to be fixed in the heat exchanger shell, its characterized in that: the heat exchange tube inner wall integrated extrusion molding have the internal thread, be provided with helical fin at the center of heat exchange tube, helical fin is the heliciform, and its direction of rotation is opposite with the screw thread direction, welds on the heat exchange tube wall through the support arm on the helical fin, has a plurality of water holes of crossing on the helical fin.
2. The heat exchanger with the internally threaded heat exchange tube as recited in claim 1 wherein the water through holes are oval, circular, triangular, square or elongated and are irregularly distributed on the spiral fins.
3. The heat exchanger with the internally threaded heat exchange tube as recited in claim 1 wherein the helical fin is a helix made of aluminum alloy sheet with two ends rotating in opposite directions for 0.5-1 turn.
4. The heat exchanger with the internally threaded heat exchange tube as recited in claim 1 wherein the height of the internal thread is 25-30% of the radius of the heat exchange tube and the diameter of the circle occupied by the spiral fin is 20% of the inner diameter of the heat exchange tube.
5. The heat exchanger with the internally threaded heat exchange tube as recited in claim 1 wherein the heat exchange tube is of aluminum alloy.
6. The heat exchanger with an internally threaded heat exchange tube as recited in claim 1 wherein the arms are S-shaped, welded at both ends to the inner wall of the heat exchange tube at a location adjacent to the tube sheet, and welded at the middle to the helical fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922458776.9U CN211695990U (en) | 2019-12-31 | 2019-12-31 | Heat exchanger with internal thread heat exchange tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922458776.9U CN211695990U (en) | 2019-12-31 | 2019-12-31 | Heat exchanger with internal thread heat exchange tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211695990U true CN211695990U (en) | 2020-10-16 |
Family
ID=72797271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922458776.9U Active CN211695990U (en) | 2019-12-31 | 2019-12-31 | Heat exchanger with internal thread heat exchange tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211695990U (en) |
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2019
- 2019-12-31 CN CN201922458776.9U patent/CN211695990U/en active Active
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