CN114074154A - Manufacturing equipment for winding to form heat transfer inner inserting core in reinforced pipe - Google Patents
Manufacturing equipment for winding to form heat transfer inner inserting core in reinforced pipe Download PDFInfo
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- CN114074154A CN114074154A CN202010799057.8A CN202010799057A CN114074154A CN 114074154 A CN114074154 A CN 114074154A CN 202010799057 A CN202010799057 A CN 202010799057A CN 114074154 A CN114074154 A CN 114074154A
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- tensioning
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- 238000004804 winding Methods 0.000 title claims abstract description 133
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 claims abstract description 22
- 238000005859 coupling reaction Methods 0.000 claims abstract description 22
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims abstract description 3
- 235000000396 iron Nutrition 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 abstract description 17
- 230000037431 insertion Effects 0.000 abstract description 17
- 230000000694 effects Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 43
- 239000010959 steel Substances 0.000 description 43
- 238000010586 diagram Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F45/00—Wire-working in the manufacture of other particular articles
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Motors, Generators (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to a manufacturing device for winding and forming a heat transfer inner insertion core in a reinforced pipe, which comprises a support frame, a motor, a magnetic half coupling, an inner insertion core winding unit, a limiting device for winding and forming the length of the inner insertion core, a positioning device for winding the length of a wire, a circumferential positioning component for winding and forming an inner insertion core placing frame, an electric control cabinet and the inner insertion core winding unit. In the structure, the motor is fixed on the support frame, the motor passes through the magnetic force half-coupling on the interior lock pin winding unit of magnetic force actuation connection, interior plug pin winding unit is connected with the support frame by the bearing housing for setting up on the support frame, the positioner of winding silk length is by middle mount, the tensioning pulley, the activity couple, the tensioning spring, the tensioning rope is connected, the positioner of winding silk length and the elasticity degree of interior plug pin length stop device common control winding silk, interior plug pin length stop device is by bolted connection on the support frame, can adjust its position wantonly, so that twine out the interior plug pin of different specifications, interior plug pin placer is put on one side of support frame manual operation, the installation of convenient winding silk and the dismantlement of interior plug pin, the electric control cabinet is installed on the support frame. The invention realizes the semi-automation of the winding of the inner inserting core, has reasonable design, simple and convenient operation, reduces the manual labor, has low manufacturing cost, can adjust the length of the winding wire, adapts to the winding of the inner inserting cores with different specifications, can also accelerate the winding speed of the inner inserting core, ensures that the inner inserting core is wound more uniformly, and improves the winding quality.
Description
Technical Field
The invention relates to a manufacturing device for forming a heat transfer inner insertion core in a reinforced pipe by winding. The invention can realize the quick and high-quality processing of the heat-transfer inner inserting core in the reinforced pipe formed by winding. The present invention belongs to the field of machine manufacturing.
Background
When the heat transfer inner inserting core in the reinforced pipe formed by winding is inserted into the pipe, vortexes in 3 directions can be formed in the space in the pipe, the mixing degree of cold and hot fluids in the pipe is accelerated, and the temperature gradient near the pipe wall is increased, so that the heat transfer coefficient in the pipe is increased, and the convection heat transfer is reinforced. The heat transfer inner inserting core formed in the winding mode in the reinforced pipe can be manufactured manually, but the manual machining efficiency is low, the machining cost is high, the winding tightness of the inner inserting core is not uniform enough, the machining precision is affected, and the heat exchange performance of the inner inserting core is further affected. Therefore, the invention provides a manufacturing device for winding and forming the heat transfer inner inserting core in the reinforced pipe, which is used for realizing the processing of winding and forming the inner inserting core with high speed and high quality.
Disclosure of Invention
The invention aims to improve the processing efficiency of the heat-transfer inner insert core formed by winding in the reinforced pipe and overcome the defects of manual processing, and provides a manufacturing device for forming the inner insert core by winding, so that the tightness of the processed inner insert core formed by winding is more uniform, the geometric structure is more regular, and the processing cost is reduced.
The purpose of the invention can be realized by the following technical scheme.
The invention provides a device 1 for manufacturing a heat transfer inner inserted core in a reinforced pipe by winding, which comprises a support frame 2, a motor 3, a magnetic coupling half 4, an inserted core winding unit 5, an inserted core length limiting device 6 formed by winding, a positioning device 7 for winding the length of a wire, an inserted core placing frame 8 formed by winding, an electric control cabinet 9 and a circumferential positioning component 10 of the winding unit 5.
In the structure, motor 3 fixes 2 on the support frame, motor 3 connects magnetic force half coupling 4 on the interior lock pin winding unit 5 through magnetic force actuation, interior lock pin winding unit 5 is for setting up on 2 on the support frame, positioner 7 of winding silk length installs on interior lock pin winding unit 5, the length of the steerable winding silk 17 of positioner 7 of winding silk length, winding unit 5 circumference locating component 10 is installed on 2 on the support frame, control interior lock pin winding unit 5 pivoted angle, interior lock pin length stop device 6 is connected on support frame 2 by bolt 16, can adjust its position wantonly, so that twine out the interior lock pin 18 of different specifications, interior lock pin rack 8 is put on one side of 2 manual operation on the support frame, make things convenient for the installation of winding silk 17 and the dismantlement of interior lock pin 18, electric control cabinet 9 installs on support frame 2.
In the structure, the support frame 2 is formed by welding a plurality of angle irons 19 and is mainly used for supporting the inner inserting core winding unit 5, the motor 3, the limiting device 6 for winding to form the length of the inner inserting core, the electric control cabinet 9, the circumferential positioning component 10 of the inner inserting core winding unit 5 and the like.
In the structure, the inner inserting core winding unit 5 is installed on the supporting frame 2 and connected with the supporting frame 2 through the bearing sleeve 20, and comprises a positioning device 7 for winding the length of the wire, a left rotating wheel 21, a right rotating wheel 22, a central shaft tube 23, eight guide tubes 24 and a sliding rail 25.
In the structure, the positioning device 7 for the length of the winding wire is connected by an intermediate fixing frame 11, a tensioning pulley 12, a movable hook 13, a tensioning spring 14 and a tensioning rope 15, and the positioning device 7 for the length of the winding wire can control the length of the winding wire 17.
In the structure, eight winding side magnetic coupling halves 4 are arranged on the left rotating wheel 21. The winding side magnetic force half coupling 4 is fixed on the left rotating wheel 21 through a bolt 16, the motor 3 is started, and the motor side and the winding side magnetic force half coupling 4 rotate simultaneously after being attracted, so that the winding processing of the inner inserting core is realized.
In the structure, the circumferential positioning component 10 of the inner inserting core winding unit 5 is composed of a positioning hole 26, a positioning pin 27, a pedal rod 28, a fixed pulley 29 and a control wire 30, wherein the positioning hole 26 is arranged on the left rotating wheel 21, the pedal rod 28 is arranged at the lower position of the support frame 2, the control wire 30 is connected on the pedal rod 28, the rotating angle of the inner inserting core winding unit 5 can be controlled, and the positioning of the inner inserting core winding unit 5 is realized.
In the structure, the eight tensioning pulleys 12 are uniformly arranged on the right rotating wheel 22 in the circumferential direction, the movable hook 13, the tensioning spring 14 and the tensioning rope 15 are connected through the eight tensioning pulleys 12.
In the structure, an intermediate fixing frame 11 is arranged on a central shaft tube 23, the intermediate fixing frame 11 is connected with eight tensioning springs 14, the tensioning springs 14 are connected with tensioning ropes 15 in a knotting mode, and the tensioning ropes 15 are connected with movable hooks 13 through tensioning pulleys 12.
In the structure, the tensioning rope 15 is arranged in the guide pipe 24, the movable hook 13 is arranged on the slide rail 25 of the guide pipe 24, the length of the winding wire 17 is controlled, and the tightness of winding of the inner inserting core 18 is controlled together with the inner inserting core length limiting device 6.
In the structure, eight fixed hooks 31 are arranged on the eight magnetic coupling halves 4.
In the structure, the fixing hook 31 is provided with two small fixing hooks 32 for fixing the inner ferrule 18.
In the structure, the movable hook 13 is provided with two movable small hooks 33 for fixing the inner inserting core 18.
The inner insert 18 is formed from one of a bifilar winding wire 34, a bifilar winding wire 35, a steel wire toroid or a steel spiral wire toroid 36.
The inner insertion core 18 is inserted into the heat exchange tube 37, so that the heat exchange performance in the tube can be improved.
The working principle of the invention is as follows: knotting the double-strand winding steel wire with the specified number of steel wire rings or steel spiral wire rings 36, then respectively hanging the two ends of the double-strand winding steel wire 17 at the two ends of the movable hook 13 and the fixed hook 31, connecting the fixed hook 31 and the coupler 4, hanging the movable hook 13 on the slide rail 25 of the guide pipe 24, after the two ends of the double-strand winding steel wire 17 are fixed, starting the motor 3, driving the coupler 4 to rotate by the motor 3, and further realizing the twisting of the double-strand winding steel wire 17. Because of the action of the tension spring 14, the length of the double-strand winding steel wire 17 is continuously reduced while the double-strand winding steel wire rotates, and when the length of the double-strand winding steel wire is just equal to the length of the radiating pipe, the inner inserting core length limiting device 6 is triggered, and the motor stops rotating. At this time, the foot lever 28 is stepped on, the positioning pin 27 is separated from the positioning hole 26 on the left rotating wheel 21 of the inner insertion core winding unit 5, the inner insertion core winding unit 5 is rotated to align the positioning pin 27 with the positioning hole 26 on the left rotating wheel 21 of the inner insertion core winding unit 5, the foot lever 28 is released to combine the positioning pin 27 with the positioning hole 26 on the left rotating wheel 21 of the inner insertion core winding unit 5, the next half coupling 4 is attracted with the half coupling of the motor 3, and the operation is repeated in this way, so that the next inner insertion core can be wound.
The invention can accelerate the winding speed of the inner inserting core, reduce labor force and processing cost, make the inner inserting core more uniform, make the fluid flow in the pipe more uniform and have better heat transfer performance.
Drawings
FIG. 1 is a schematic diagram of the overall left side structure of a manufacturing device 1 for forming a heat transfer inner insert core in a reinforced pipe by winding
FIG. 2 is a schematic diagram of the overall right side structure of a manufacturing device 1 for forming a heat transfer inner insert core in a reinforced pipe by winding
FIG. 3 is a schematic diagram of the left side structure of the insert core winding unit 5
FIG. 4 is a schematic diagram of the right side structure of the insertion core winding unit 5
FIG. 5 left side view of the insert core winding unit 5
FIG. 6 Right side view of the interposer winding unit 5
FIG. 7 is a schematic view of the structure of the winding wire 17
Figure 8 is a schematic structural view of the inner ferrule 18
Figure 9 schematic diagram of insertion of the inner plug core 18 into the heat exchange tube 37
Figure 10 inner insert core 18 inserted into heat exchange tube 37
Reference numbers in the figures: 1. manufacturing equipment for the inner ferrule; 2. a support frame; 3. an electric motor; 4. a magnetic half-coupling; 5. an inner ferrule winding unit; 6. winding to form an inserted core length limiting device; 7. a positioning device for winding the length of the wire; 8. winding to form an inner insert core placing frame; 9. an electric control cabinet; 10. positioning assembly, 11, middle fixing frame; 12. a tension pulley; 13. a movable hook; 14. tensioning the spring; 15. tensioning the rope; 16 bolts; 17. winding the filaments; 18. an inner ferrule; 19. angle iron; 20. a bearing housing; 21. a left rotating wheel; 22. a right wheel; 23. a central shaft tube; 24. a conduit; 25. a slide rail; 26. positioning holes; 27. positioning pins; 28. a foot lever; 29. a fixed pulley; 30. a control line; 31. fixing the hook; 32. fixing a small hook; 33. a movable small hook 34, one of the two strands of winding wires; 35. a second two-strand wound steel wire; 36. a steel spiral wire ring; 37. a heat exchange tube.
Marking parameters in the graph: d1The diameter of the steel wire of the steel spiral wire ring; d2Diameter of the double strand wound steel wire; diThe inner diameter of the tube; diameter D of steel spiral wire ring1(ii) a L winding the length of the steel wire; l' interpolation core length.
Detailed Description
According to the inner diameter D of the heat exchange tube 37iAnd the tight fit of the formed inner insert core 18 inside the heat exchange tube 37 requires that the diameter D of the steel spiral wire ring 36 be determined1And suitably d1。
By a diameter d1The steel wire making of (a) requires a steel spiral wire loop 36.
2 times the length and diameter d2Is folded to form two sections of steel wire, one section of which is threaded with a specified diameter D of the steel spiral wire loop1A diameter of a prescribed length d1The steel wire of (a) makes the steel spiral wire loop 36.
One end of the double-strand winding steel wire penetrated with the steel spiral wire ring 36 is knotted, so that two steel wires form a closed structure, and two ends of the double-strand winding steel wire are conveniently connected with the movable hook 13 and the fixed hook 31.
Hanging two ends of the double-strand winding steel wires 34 and 35 and the steel spiral wire ring 36 on the movable hook 13 and the fixed hook 31 respectively, connecting the fixed hook 31 at one end with the coupler 4, arranging the other end on the guide slide rail 25, and specifically arranging the movable hook 13 according to the diameter D of the steel spiral wire ring 361And the diameter d of the steel spiral wires 34, 351The length of the steel wire of the double-strand wound steel spiral wire ring and the length of the pipe 37.
After the two ends of the double-strand winding steel wire 17 are fixed, the motor 3 is started, and the motor 3 drives the magnetic coupling 4 to rotate, so that the double-strand winding steel wire 17 is twisted.
Because of the effect of the tension spring 14, when the fixed hook rotates 31, the tension spring 14 is gradually lengthened, the double-strand winding steel wire 17 continuously rotates along with the coupler 4, the length of the double-strand winding steel wire 17 is continuously reduced, and when the length of the double-strand winding steel wire is just equal to the length of the specified heat exchange tube 37, the inner insertion core length limiting device 6 is triggered, and the motor 3 stops rotating.
And finishing the winding of the first inner inserting core 18, stepping on the pedal rod 28, separating the inner inserting core winding unit 5 from the positioning hole 26, and separating the magnetic coupling half 4 connected with the fixed hook 31 from the motor side magnetic coupling half.
The inner inserting core winding unit 5 is rotated, the positioning pin 27 is aligned with the adjacent positioning hole 26, the pedal rod 28 is loosened, the positioning pin 27 is matched with the positioning hole 26 on the left rotating wheel 21, the circumferential positioning of the inner inserting core winding unit 5 is realized, and the adjacent positioning hole 26 corresponds to the inner inserting core winding unit 5 side magnetic half-coupling 4 and is attracted with the motor side half-coupling.
The wound inner insertion core 18 is taken down from the movable hook 13 and the fixed hook 31 at both ends, and both ends of the next bifilar winding steel wires 34, 35 and the steel spiral wire ring 36 are hung on the movable hook 13 and the fixed hook 31.
And starting the motor 3, wherein the motor 3 drives the coupler 4 to rotate, so that the twisting of the double-strand winding steel wire 17 is realized. By circulating in this way, the continuous circulating winding of the inner inserting core 18 can be realized.
The heat exchange tube 37 is provided with the inner insertion core 18 fabricated as above, and the heat exchange tube capable of enhancing the convection heat transfer in the tube is formed.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and should not be construed as limiting the invention, but rather as embodying the invention in various embodiments that may vary somewhat from the spirit and scope of the present invention.
Claims (10)
1. A device (1) for manufacturing a heat transfer inner inserted core in a reinforced pipe by winding comprises a support frame (2), a motor (3), a magnetic half-coupling (4), an inner inserted core winding unit (5), an inner inserted core length limiting device (6) formed by winding, a positioning device (7) of the length of a wound wire, an inner inserted core placing frame (8) formed by winding, an electric control cabinet (9), a circumferential positioning component (10) of the winding unit (5), the motor (3) is fixed on the support frame (2), the motor (3) is connected with the magnetic half-coupling (4) on the inner inserted core winding unit (5) through magnetic attraction, the inner inserted core winding unit (5) is arranged on the support frame (2), the positioning device (7) of the length of the wound wire is arranged on the inner inserted core winding unit (5), and the positioning device (7) of the length of the wound wire can control the length of the wound wire (17), winding unit (5) circumference locating component (10) are installed on support (2), insert core winding unit (5) pivoted angle in the control, insert core length stop device (6) are connected on support frame (2) by bolt (16), can adjust its position wantonly, so that twine out the interior lock pin (18) of different specifications, insert core rack (8) are put on one side of support frame (2) manual operation, make things convenient for the installation of winding silk (17) and the dismantlement of interior lock pin (18), install on support frame (2) electric control cabinet (9).
2. In the structure, the support frame (2) is formed by welding a plurality of angle irons (19) and is mainly used for supporting the inner inserting core winding unit (5), the motor (3), the inner inserting core length limiting device (6) formed by winding, the electric control cabinet (9), the circumferential positioning component (10) of the inner inserting core winding unit (5) and the like.
3. In the structure, the inner inserting core winding unit (5) is connected with the support frame (2) through a bearing sleeve (20) for being installed on the support frame (2), and comprises a positioning device (7) for winding the length of the wire, a left rotating wheel (21), a right rotating wheel (22), a central shaft tube (23), eight guide tubes (24) and a sliding rail (25).
4. The positioning device (7) for the length of the winding wire is connected by a middle fixing frame (11), a tensioning pulley (12), a movable hook (13), a tensioning spring (14) and a tensioning rope (15), and the positioning device (7) for the length of the winding wire can control the length of the winding wire (17).
5. In the structure, eight winding side magnetic force half couplings (4) are arranged on the left rotating wheel (21). The winding side magnetic half coupling (4) is fixed on the left rotating wheel (21) through a bolt (16), the motor (3) is started, the motor side and the winding side magnetic half coupling (4) rotate simultaneously after being attracted, and winding processing of the inner inserting core (18) is achieved.
6. In the structure, interpolation core winding unit (5) circumference locating component (10), by locating hole (26), locating pin (27), pedal lever (28), fixed pulley (29), control line (30) are constituteed, locating hole (26) set up on left runner (21), pedal lever (28) install support frame (2) below position, be connected with control line (30) on pedal lever (28), the location of interior lock pin winding unit (5) is realized to the rotation angle of steerable interior lock pin winding unit (5).
7. In the structure, the eight tensioning pulleys (12) are circumferentially and uniformly arranged on the right rotating wheel (22), the movable hook (13), the tensioning spring (14) and the tensioning rope (15) are connected through the eight tensioning pulleys (12).
8. In the structure, a middle fixing frame (11) is installed on a central shaft tube (23), the middle fixing frame (11) is connected with eight tensioning springs (14), the tensioning springs (14) are knotted and connected with tensioning ropes (15), and the tensioning ropes (15) are connected with movable hooks (13) through tensioning pulleys (12).
9. In the structure, the tensioning rope (15) is arranged in the guide pipe (24), the movable hook (13) is arranged on a sliding rail (25) of the guide pipe (24) to control the length of the winding wire (17) and the winding tightness of the inner inserting core (18) together with the inner inserting core length limiting device (6). The movable hook (13) is provided with two movable small hooks (33) for fixing the inner inserting core (18).
10. In the structure, eight fixed hooks (31) are arranged on the eight magnetic coupling halves (4). The fixed hook (31) is provided with two small fixed hooks (32) for fixing the inner inserting core (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799057.8A CN114074154B (en) | 2020-08-11 | 2020-08-11 | Manufacturing equipment for winding and forming reinforced heat transfer inner inserting core in pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799057.8A CN114074154B (en) | 2020-08-11 | 2020-08-11 | Manufacturing equipment for winding and forming reinforced heat transfer inner inserting core in pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114074154A true CN114074154A (en) | 2022-02-22 |
| CN114074154B CN114074154B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010799057.8A Active CN114074154B (en) | 2020-08-11 | 2020-08-11 | Manufacturing equipment for winding and forming reinforced heat transfer inner inserting core in pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN114074154B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1249757A (en) * | 1970-05-06 | 1971-10-13 | Denco Miller Ltd | Tubular heat exchange element |
| GB1328371A (en) * | 1971-06-29 | 1973-08-30 | Midland Wire Cordage Co Ltd | Method of making turbulators for heat-exchange tubes |
| CN2078863U (en) * | 1990-11-01 | 1991-06-12 | 刘霖沛 | Horizontal volumetric heat-exchanger with turbulent helical |
| JPH1137686A (en) * | 1997-07-15 | 1999-02-12 | Mitsubishi Electric Corp | Heat exchanger and its manufacture |
| CN2410613Y (en) * | 2000-01-07 | 2000-12-13 | 清华大学 | Double helical spring heat-transfer strengthening pipe |
| CN103517775A (en) * | 2011-05-10 | 2014-01-15 | 阿尔弗雷德·凯驰两合公司 | Heat exchanger and method for producing same |
| JP2014062724A (en) * | 2012-09-20 | 2014-04-10 | Uchimura:Kk | Multiple pipe type heat exchanger |
| CN103983136A (en) * | 2014-05-16 | 2014-08-13 | 北京京诚凤凰工业炉工程技术有限公司 | Heat exchange tube and insertion piece |
| CN204396754U (en) * | 2015-01-13 | 2015-06-17 | 江苏透平密封高科技股份有限公司 | A kind of grooved ring storage wire form automatic winding machine manufactured for brush seal |
| CN210438182U (en) * | 2018-12-18 | 2020-05-01 | 河南钮力特电力科技有限公司 | Steel wire winding machine for fire hose joint |
-
2020
- 2020-08-11 CN CN202010799057.8A patent/CN114074154B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1249757A (en) * | 1970-05-06 | 1971-10-13 | Denco Miller Ltd | Tubular heat exchange element |
| GB1328371A (en) * | 1971-06-29 | 1973-08-30 | Midland Wire Cordage Co Ltd | Method of making turbulators for heat-exchange tubes |
| CN2078863U (en) * | 1990-11-01 | 1991-06-12 | 刘霖沛 | Horizontal volumetric heat-exchanger with turbulent helical |
| JPH1137686A (en) * | 1997-07-15 | 1999-02-12 | Mitsubishi Electric Corp | Heat exchanger and its manufacture |
| CN2410613Y (en) * | 2000-01-07 | 2000-12-13 | 清华大学 | Double helical spring heat-transfer strengthening pipe |
| CN103517775A (en) * | 2011-05-10 | 2014-01-15 | 阿尔弗雷德·凯驰两合公司 | Heat exchanger and method for producing same |
| JP2014062724A (en) * | 2012-09-20 | 2014-04-10 | Uchimura:Kk | Multiple pipe type heat exchanger |
| CN103983136A (en) * | 2014-05-16 | 2014-08-13 | 北京京诚凤凰工业炉工程技术有限公司 | Heat exchange tube and insertion piece |
| CN204396754U (en) * | 2015-01-13 | 2015-06-17 | 江苏透平密封高科技股份有限公司 | A kind of grooved ring storage wire form automatic winding machine manufactured for brush seal |
| CN210438182U (en) * | 2018-12-18 | 2020-05-01 | 河南钮力特电力科技有限公司 | Steel wire winding machine for fire hose joint |
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|---|---|
| CN114074154B (en) | 2024-04-26 |
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