CN104457363A - Heat exchange tube winding technology for winding tube type heat exchanger tube bundle - Google Patents
Heat exchange tube winding technology for winding tube type heat exchanger tube bundle Download PDFInfo
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- CN104457363A CN104457363A CN201410723341.1A CN201410723341A CN104457363A CN 104457363 A CN104457363 A CN 104457363A CN 201410723341 A CN201410723341 A CN 201410723341A CN 104457363 A CN104457363 A CN 104457363A
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- heat exchanger
- exchanger tube
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- bank
- pipe
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Abstract
The invention discloses a heat exchange tube winding technology for a winding tube type heat exchanger tube bundle. The technology comprises the following steps: feeding a liquid which cannot produce any risk to heat exchange tubes in advance, maintaining the pressure, and then winding the heat exchange tubes onto a central cylinder of the tube bundle to overcome the tube flattening phenomenon, wherein the allowances of the ovality of the wound heat exchange tubes are as follows: the external diameter of the I-level tube bundle is not larger than 5% of that of the heat exchange tubes, and the external diameter of the II-level tube bundle is not larger than 10% of that of the heat exchange tubes. The winding technology overcomes the flattening phenomenon of the current winding technology, so as to ensure the product quality and the heat exchange performance of the winding tube type heat exchanger tube bundle.
Description
Technical field
The present invention relates to a kind of heat exchanger tube winding process, refer to the heat exchanger tube winding process that a kind of wrap-round tubular heat exchanger is restrained especially.
Background technology
In the heat exchanger tube winding process that various wrap-round tubular heat exchanger is restrained, because heat exchanger tube is bent through coiling by straightened condition, heat exchanger tube is usually crushed and becomes flat form, especially when the pipe radius of curvature of coiling is less, or the wall thickness of pipe thinner time, it is even more serious to there is flat phenomenon in it.The heat exchanger tube of flat form seriously reduces the coefficient of heat transfer of heat exchanger, increases the Pressure Drop of heat exchanger; Simultaneously because heat exchanger tube is flat form, there is scale error, during coiling tube bank, the external diameter of tube bank is uncontrollable, makes tube bank be difficult to coincidence pattern requirement, has had a strong impact on the assembly quality of heat exchanger.When the heat exchanger tube of coiling wrap-round tubular heat exchanger tube bank, strictly must control the ovality of pipe, prevent to flatten phenomenon, to guarantee product quality and the heat exchange property of wrap-round tubular heat exchanger.
Summary of the invention
Technical problem to be solved by this invention is: provide the heat exchanger tube winding process that a kind of wrap-round tubular heat exchanger is restrained, and this winding process overcomes the flattening phenomenon of current winding process, to guarantee product quality and the heat exchange property of wrap-round tubular heat exchanger.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of heat exchanger tube winding process of wrap-round tubular heat exchanger tube bank, this technique is exchanged heat pipe in advance and is filled with the liquid that can not cause danger and carries out pressurize, then heat exchanger tube is wrapped on tube bank central tube, phenomenon is flattened to overcome pipe, heat exchanger tube ovality franchise after coiling: 5%, the II level tube bank that the tube bank of I level is not more than heat exchanger tube external diameter is not more than 10% of heat exchanger tube external diameter.
As the preferred scheme of one, the concrete operations mode that in above-mentioned technique, utilization can not cause the liquid of causing danger to carry out pressurize is: first blocked and weld seal weld by entire volume plate-like heat exchanger tube one end cylinder plug identical with heat exchanger tube material; Again the entire volume plate-like heat exchanger tube other end and a nipple one end are welded to connect, Pressure gauge is provided with in the middle part of nipple, the outlet of the nipple other end and a valve is welded to connect, and import and a flexible joint of valve are welded to connect, and the conveying tube joint of flexible joint and a compression pump is with being threaded; Then open valve, liquid is filled in heat exchanger tube by compression pump, Pressure gauge display charged pressure, valve-off pressurize after charged pressure arrives authorized pressure.
As the preferred scheme of one, temperature during described punching press pressurize is lower than the boiling point of liquid, and the pressure of pressurising pressurize should be the hydraulic test pressure P that pipe standard used calculates
t, and 0.9 times of maximum test pressure P of its prescribed by standard must not be greater than
tmax, and the design pressure P of heat exchanger tube of wrap-round tubular heat exchanger tube bank of 2 times must not be less than
0.
As the preferred scheme of one, this pressurising pressurize liquid adopts clean water, for austenitic stainless steel heat exchanger tube, should control chloride ion content in water and be no more than 25mg/L.
As the preferred scheme of one, the concrete technology that heat exchanger tube is wrapped on tube bank central tube is:
A. be placed in pipe machine two backing roll group by two tube sheets being welded in tube bank central tube two ends, tube sheet center, one end is connected with the drive unit main shaft around pipe machine, and when the drive unit main axis of pipe machine, restraining central tube can corresponding rotation;
B. be arranged on arbitrary-movement articulator by the entire volume plate-like heat exchanger tube after pressurising pressurize, this arbitrary-movement articulator can move axially along tube bank central tube;
C. one end of the heat exchanger tube of cylinder plug will be installed through straightener, penetrate in the corresponding pore of one of them tube sheet again, then with curved mould the heat exchanger tube of axis curved circumference and heat exchanger tube is fixed on central tube, and undertaken around pipe by the helical angle of regulation, until heat exchanger tube is fixed on central tube after tail end, with curved mould, the pipe of circumference is curved cut-out axially more then to draw from the tube sheet corresponding aperture of the other end, complete a heat pipe and be wound around;
D. cut-out end punching press pressurize after cylinder plug welding shutoff of entire volume plate-like heat exchanger tube, then repeat step C, until the heat exchanger tube on central tube has been wound around.
As the preferred scheme of one, in step C, installed one end of the heat exchanger tube of cylinder plug through straightener, then penetrated in the corresponding pore of one of them tube sheet, this tube sheet more than lateral surface 30mm is stretched out in heat exchanger tube termination.
As the preferred scheme of one, the tube bank central tube of heat exchanger can be wound around N layer heat exchanger tube, every layer of heat exchanger tube can be wound around M root heat exchanger tube, has first been wound around by all for internal layer heat exchanger tubes, and then is wound around the second layer, third layer during winding ... n-th layer.
After have employed technique scheme, effect of the present invention is: owing to pouring liquid in heat exchanger tube and pressurize, when coiling heat exchange, there is pressure pipe inside, makes tube wall be in swelling state all the time, not easily produce and flatten phenomenon, the ovality of pipe can reach effective control, thus makes the heat exchanger tube be wound around meet two kinds of qualities, and the tube bank of I level is not more than 5% of heat exchanger tube external diameter, the tube bank of II level is not more than 10% of heat exchanger tube external diameter, so just guarantees product quality and the heat exchange property of wrap-round tubular heat exchanger.
Again because temperature during described punching press pressurize is lower than the boiling point of liquid, the pressure of pressurising pressurize should be the hydraulic test pressure P that pipe standard used calculates
t, and 0.9 times of maximum test pressure P of its prescribed by standard must not be greater than
tmax, and the design pressure P of heat exchanger tube of wrap-round tubular heat exchanger tube bank of 2 times must not be less than
0, like this, in heat exchanger tube, fluid pressure is just greater than the design pressure P of the heat exchanger tube of 2 times of wrap-round tubular heat exchanger tube banks
0, each root heat exchanger tube can be exempted exchange heat pipe after complete and carry out pressure test or leak test, and meanwhile, namely this pressure limit can not exchange heat pipe and produce and destroy, and enough pressure also can be had to make tube wall occur swelling state, guarantee that ovality when being wound around meets the demands.
Again because this pressurising pressurize liquid adopts clean water, for austenitic stainless steel heat exchanger tube, should control chloride ion content in water and be no more than 25mg/L, this punching press pressurize liquid is commonplace, and for austenitic stainless steel heat exchanger tube, the amount controlling chlorion effectively can prevent corrosion.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the plate-like heat exchanger tube pressurising schematic diagram of the embodiment of the present invention;
Fig. 2 is the enlarged drawing of Fig. 1 at I place;
Fig. 3 is the enlarged drawing of Fig. 1 at II place;
Fig. 4 is that the heat exchanger tube pressurising of the embodiment of the present invention is around pipe schematic diagram;
Fig. 5 is the A direction view of Fig. 4;
In accompanying drawing: 1. cylinder plug; 2. heat exchanger tube; 3. nipple; 4. Pressure gauge; 5. valve; 6. flexible joint; 7. the carrier pipe of compression pump; 8. put pipe dish; 9. straightener; 10. spindle coupling disc; 11. backing roll groups; 12. tube sheets; 13. central tubes.
Detailed description of the invention
Below by specific embodiment, the present invention is described in further detail.
As shown in Figures 1 to 5, a kind of heat exchanger tube 2 winding process of wrap-round tubular heat exchanger tube bank, this technique is exchanged heat pipe 2 in advance and is filled with the liquid that can not cause danger and carries out pressurize, then heat exchanger tube 2 is wrapped on tube bank central tube 13, phenomenon is flattened to overcome pipe, heat exchanger tube 2 ovality franchise after coiling: 5%, the II level tube bank that the tube bank of I level is not more than heat exchanger tube 2 external diameter is not more than 10% of heat exchanger tube 2 external diameter.Wherein, temperature during described punching press pressurize is lower than the boiling point of liquid, and the pressure of pressurising pressurize should be the hydraulic test pressure P that pipe standard used calculates
t, and 0.9 times of maximum test pressure P of its prescribed by standard must not be greater than
tmax, and the design pressure P of heat exchanger tube 2 of wrap-round tubular heat exchanger tube bank of 2 times must not be less than
0.Wherein, P
tthe standard test pressure value that when heat exchanger tube 2 of the entire volume plate-like being wound in tube bank that represented is is purchased, supplier provides; P
tmaxthat producer is for this standard test pressure value P
tcarry out the maximum test pressure that pressure test is adopted constantly, when exchange heat pipe 2 carries out pressure test, this maximum test pressure must be utilized to test, the corresponding described standard test pressure value P of this maximum test pressure
t, P
tmaxbe greater than P
t; And design pressure P
0refer to the design pressure that wrap-round tubular heat exchanger will bear, and the fluid pressure of pressurising pressurize is greater than the P of twice
0, without the need to carrying out pressure test after being so wound around.Generally speaking, this pressurising pressurize liquid adopts clean water, for austenitic stainless steel heat exchanger tube 2, should control chloride ion content in water and be no more than 25mg/L.Certainly, as long as the dangerous liquid that can not produce security incident all can as the medium of pressurising pressurize.
The concrete operations mode that in above-mentioned technique, utilization can not cause the liquid of causing danger to carry out pressurize is: first blocked and weld seal weld by entire volume plate-like heat exchanger tube 2 one end cylinder plug 1 identical with heat exchanger tube 2 material, the diameter of this cylinder plug 1 is slightly less than the diameter of heat exchanger tube 2; Again entire volume plate-like heat exchanger tube 2 other end and nipple 3 one end are welded to connect, Pressure gauge 4 is provided with in the middle part of nipple 3, the outlet of nipple 3 other end and a valve 5 is welded to connect, import and a flexible joint 6 of valve 5 are welded to connect, and carrier pipe 7 joint of flexible joint 6 and a compression pump is with being threaded; Then open valve 5, liquid is filled in heat exchanger tube 2 by compression pump, and Pressure gauge 4 shows charged pressure, valve-off 5 pressurize after charged pressure arrives authorized pressure.Above-mentioned each weld seam has not allowed leakage.
The concrete technology that heat exchanger tube 2 is wrapped on tube bank central tube 13 is:
A. be placed in pipe machine two backing roll group 11 by two tube sheets 12 being welded in tube bank central tube 13 two ends, one end tube sheet 12 center is connected with the drive unit main shaft around pipe machine, when the drive unit main axis of pipe machine, and the corresponding rotation of tube bank central tube 13 meeting; Wherein, tube sheet 12 is connected by spindle coupling disc 10 with between main shaft, and the main shaft of drive unit rotates and just drives tube bank central tube 13 to rotate in backing roll group 11.
B. be arranged on arbitrary-movement articulator by the entire volume plate-like heat exchanger tube 2 after pressurising pressurize, this arbitrary-movement articulator be provided with and put pipe dish 8, this arbitrary-movement articulator can move axially along tube bank central tube 13; In winding process, heat exchanger tube 2 can move axially on tube bank central tube 13, and now arbitrary-movement articulator moves axially with it, winding mass can be guaranteed like this, certainly in this step, the heat exchanger tube 2 of entire volume plate-like is not placed on arbitrary-movement articulator, but directly placement unreels also feasible on the ground.
C. one end of the heat exchanger tube 2 of cylinder plug 1 will be installed through straightener 9, this straightener 9 adopts roller group to align, penetrate in the corresponding pore of one of them tube sheet 12 again, then with curved mould the heat exchanger tube 2 of axis curved circumference and heat exchanger tube 2 is fixed on central tube 13, and undertaken around pipe by the helical angle of regulation, until heat exchanger tube 2 is fixed on central tube 13 after tail end, with curved mould, the pipe of circumference is curved cut-out axially more then to draw from tube sheet 12 corresponding aperture of the other end, complete a heat pipe and be wound around; In this step, this tube sheet 12 more than lateral surface 30mm is stretched out in heat exchanger tube 2 termination, ensures the phenomenon not occurring de-pipe in winding process.
D. the cut-out end cylinder plug 1 of entire volume plate-like heat exchanger tube 2 welds punching press pressurize again after shutoff, then repeats step C, until the heat exchanger tube 2 on central tube 13 has been wound around.
And for general heat exchanger, the tube bank central tube 13 of heat exchanger can be wound around N layer heat exchanger tube 2, every layer of heat exchanger tube 2 can be wound around M root heat exchanger tube 2, has first been wound around by all for internal layer heat exchanger tubes 2 during winding, and then is wound around the second layer, third layer ... n-th layer.
Claims (7)
1. the heat exchanger tube winding process of a wrap-round tubular heat exchanger tube bank, this technique is exchanged heat pipe in advance and is filled with the liquid that can not cause danger and carries out pressurize, then heat exchanger tube is wrapped on tube bank central tube, phenomenon is flattened to overcome pipe, heat exchanger tube ovality franchise after coiling: 5%, the II level tube bank that the tube bank of I level is not more than heat exchanger tube external diameter is not more than 10% of heat exchanger tube external diameter.
2. the heat exchanger tube winding process of a kind of wrap-round tubular heat exchanger tube bank as claimed in claim 1, is characterized in that: the concrete operations mode that in above-mentioned technique, utilization can not cause the liquid of causing danger to carry out pressurize is: first blocked and weld seal weld by entire volume plate-like heat exchanger tube one end cylinder plug identical with heat exchanger tube material; Again the entire volume plate-like heat exchanger tube other end and a nipple one end are welded to connect, Pressure gauge is provided with in the middle part of nipple, the outlet of the nipple other end and a valve is welded to connect, and import and a flexible joint of valve are welded to connect, and the conveying tube joint of flexible joint and a compression pump is with being threaded; Then open valve, liquid is filled in heat exchanger tube by compression pump, Pressure gauge display charged pressure, valve-off pressurize after charged pressure arrives authorized pressure.
3. the heat exchanger tube winding process of a kind of wrap-round tubular heat exchanger tube bank as claimed in claim 2, is characterized in that: temperature during described punching press pressurize is lower than the boiling point of liquid, and the pressure of pressurising pressurize should be the hydraulic test pressure P that pipe standard used calculates
t, and 0.9 times of maximum test pressure P of its prescribed by standard must not be greater than
tmax, and the design pressure P of heat exchanger tube of wrap-round tubular heat exchanger tube bank of 2 times must not be less than
0.
4. the heat exchanger tube winding process of a kind of wrap-round tubular heat exchanger tube bank as claimed in claim 3, is characterized in that: this pressurising pressurize liquid adopts clean water, for austenitic stainless steel heat exchanger tube, should control chloride ion content in water and be no more than 25mg/L.
5. the heat exchanger tube winding process of a kind of wrap-round tubular heat exchanger tube bank as claimed in claim 4, is characterized in that: the concrete technology that heat exchanger tube is wrapped on tube bank central tube is:
A. be placed in pipe machine two backing roll group by two tube sheets being welded in tube bank central tube two ends, tube sheet center, one end is connected with the drive unit main shaft around pipe machine, and when the drive unit main axis of pipe machine, restraining central tube can corresponding rotation;
B. be arranged on arbitrary-movement articulator by the entire volume plate-like heat exchanger tube after pressurising pressurize, this arbitrary-movement articulator can move axially along tube bank central tube;
C. one end of the heat exchanger tube of cylinder plug will be installed through straightener, penetrate in the corresponding pore of one of them tube sheet again, then with curved mould the heat exchanger tube of axis curved circumference and heat exchanger tube is fixed on central tube, and undertaken around pipe by the helical angle of regulation, until heat exchanger tube is fixed on central tube after tail end, with curved mould, the pipe of circumference is curved cut-out axially more then to draw from the tube sheet corresponding aperture of the other end, complete a heat pipe and be wound around;
D. cut-out end punching press pressurize after cylinder plug welding shutoff of entire volume plate-like heat exchanger tube, then repeat step C, until the heat exchanger tube on central tube has been wound around.
6. the heat exchanger tube winding process of a kind of wrap-round tubular heat exchanger tube bank as claimed in claim 5, it is characterized in that: in step C, one end of the heat exchanger tube of cylinder plug is installed through straightener, penetrate in the corresponding pore of one of them tube sheet again, this tube sheet more than lateral surface 30mm is stretched out in heat exchanger tube termination.
7. the heat exchanger tube winding process of a kind of wrap-round tubular heat exchanger tube bank as claimed in claim 6, it is characterized in that: the tube bank central tube of heat exchanger can be wound around N layer heat exchanger tube, every layer of heat exchanger tube can be wound around M root heat exchanger tube, first all for internal layer heat exchanger tubes are wound around during winding, and then have been wound around the second layer, third layer ... n-th layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723341.1A CN104457363A (en) | 2014-12-03 | 2014-12-03 | Heat exchange tube winding technology for winding tube type heat exchanger tube bundle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410723341.1A CN104457363A (en) | 2014-12-03 | 2014-12-03 | Heat exchange tube winding technology for winding tube type heat exchanger tube bundle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104457363A true CN104457363A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410723341.1A Pending CN104457363A (en) | 2014-12-03 | 2014-12-03 | Heat exchange tube winding technology for winding tube type heat exchanger tube bundle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104457363A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247502A (en) * | 2020-09-29 | 2021-01-22 | 廊坊展翔精密机械有限公司 | Winding method of Stirling refrigerator heat dissipation device |
| CN114633459A (en) * | 2022-03-22 | 2022-06-17 | 厦门市能诚电子科技有限公司 | Production process of pipe slingshot wire and winding equipment thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140366A (en) * | 1974-07-31 | 1976-04-05 | Balcke Duerr Ag | Tokuni choenkeidanmeno motsukanjoni obiheno rasenjoni makitsukeru hohooyobi konohohoo jitsushisurutameno sochi |
| CN101372149A (en) * | 2007-08-23 | 2009-02-25 | 华瀚科技有限公司 | Method for continuously producing plastic-steel winding tube strip |
| CN101486055A (en) * | 2007-12-27 | 2009-07-22 | 李春江 | Method for producing winding pipe of refrigerating device refrigeration evaporator of refrigerator and winding pipe device |
| CN103213084A (en) * | 2013-05-04 | 2013-07-24 | 四川川润动力设备有限公司 | Winding tube bundle positioning device |
-
2014
- 2014-12-03 CN CN201410723341.1A patent/CN104457363A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5140366A (en) * | 1974-07-31 | 1976-04-05 | Balcke Duerr Ag | Tokuni choenkeidanmeno motsukanjoni obiheno rasenjoni makitsukeru hohooyobi konohohoo jitsushisurutameno sochi |
| CN101372149A (en) * | 2007-08-23 | 2009-02-25 | 华瀚科技有限公司 | Method for continuously producing plastic-steel winding tube strip |
| CN101486055A (en) * | 2007-12-27 | 2009-07-22 | 李春江 | Method for producing winding pipe of refrigerating device refrigeration evaporator of refrigerator and winding pipe device |
| CN103213084A (en) * | 2013-05-04 | 2013-07-24 | 四川川润动力设备有限公司 | Winding tube bundle positioning device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112247502A (en) * | 2020-09-29 | 2021-01-22 | 廊坊展翔精密机械有限公司 | Winding method of Stirling refrigerator heat dissipation device |
| CN114633459A (en) * | 2022-03-22 | 2022-06-17 | 厦门市能诚电子科技有限公司 | Production process of pipe slingshot wire and winding equipment thereof |
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| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20170201 |
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| C20 | Patent right or utility model deemed to be abandoned or is abandoned |