CN117769468A - Tensioning device for rolling metal pipeline into coiled pipe - Google Patents
Tensioning device for rolling metal pipeline into coiled pipe Download PDFInfo
- Publication number
- CN117769468A CN117769468A CN202280055589.8A CN202280055589A CN117769468A CN 117769468 A CN117769468 A CN 117769468A CN 202280055589 A CN202280055589 A CN 202280055589A CN 117769468 A CN117769468 A CN 117769468A
- Authority
- CN
- China
- Prior art keywords
- roller
- housing
- winding
- serpentine
- slider
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 21
- 238000005096 rolling process Methods 0.000 title abstract description 4
- 238000004804 winding Methods 0.000 claims abstract description 27
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims abstract description 5
- 238000003754 machining Methods 0.000 abstract description 2
- 238000011089 mechanical engineering Methods 0.000 abstract description 2
- 230000001419 dependent effect Effects 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 abstract 1
- 238000005452 bending Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 241000276498 Pollachius virens Species 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
- B21D11/06—Bending into helical or spiral form; Forming a succession of return bends, e.g. serpentine form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/06—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of metal tubes
Abstract
The present invention relates to the field of mechanical engineering, in particular to a device for machining a tube under pressure, which can be used to wind a heat exchange tube of a heat exchanger into a serpentine tube having specified parameters (diameter and winding pitch). A tensioner for rolling metal tubing into a serpentine tube includes a rotatable upper roller and two replaceable lower rollers. The upper roller is vertically movable. The device is provided with a longitudinally movable slide, a housing mounted on the slide for pivoting and fixing, in which housing a control unit is mounted, the longitudinal movement of the slide being dependent on the angular displacement of the spindle shaft when the metal pipe is wound in a given step. The upper and lower rollers are mounted in tapered bearings in the housing and are formed into a multi-strand roller with the distance L between the centers of the strands defining the density of the serpentine windings. The vertical roller can move vertically through the sliding block and the adjusting screw. The distance between the roller arm centers is determined by the ratio: l=d+t, where D is the outer diameter of the coil; t is the gap between coils.
Description
Technical field related to the invention
The invention relates to the field of mechanical engineering, in particular to a device for machining a pipeline under pressure, which can be used for winding a heat exchange pipeline of a heat exchanger of a nuclear power station into a coiled pipe with specified parameters (diameter and winding spacing).
Dense packing heat exchangers are widely used in nuclear power plant designs, where the main problem is the low uniformity and density of the coils.
Information about the prior art
Tube bending fixtures and tube bending machines with fixed spoons or dies are known (Cold forging reference, romanofirpex, sixth edition, column, kohler, machine manufacturing, 1979, pages 76-77, 74, FIG. a, sigma, b, r.).
Also known are apparatuses for manufacturing tubular serpentine tubes of heat exchangers, comprising a fixed front head base and a driving tail base placed on a bed, a caliper, a mandrel fixed on the front and rear head bases and bending rollers, the body of which is curved towards the direction of movement of the workpiece, comprising a bending and clamping device mounted on a slide, the bending rollers being movably mounted in a position horizontal to the mandrel in the lower part of the body, and additional rollers being movably mounted in the upper curved part of the body. (patent RU26458, M pi K B23F 3/04, published on 12 months and 10 days 2002).
A major drawback of the known pipe bending apparatus and device is that during the pipe bending process the cross section of the pipe is strongly deformed, the outer (larger radius) pipe wall thickness is reduced and the inner (smaller radius) pipe wall thickness is increased, in which case the thin-walled pipe also forms wavy folds.
The closest approach in technology to the required solution is a device for coiling metal tubing into serpentine tubes, equipped with three rollers, the lower one of which is doubled, with a separation flange for determining the pitch and angle of the coiling lift. (patent RU2221666, M pi K B21D 53/06, published on 1 month and 20 days 2004).
The main drawbacks of this device are the constant force required to wind the pipe on the lathe, the non-circular cross section, the practically impossible winding of thin-walled pipes, and the low winding productivity.
Essence of the invention
The technical problem of the invention is to improve winding performance by winding metal tubes into a serpentine tube with specified parameters in batches, while eliminating deformation of the cross section thereof.
The method for solving the above problems is that in a tensioning device for winding a metal pipe into a serpentine, comprising an interchangeable upper roller and two interchangeable lower rollers, the upper roller is rotatable, the lower roller is vertically movable, it is provided with a slider which is longitudinally movable, a housing which is rotatably and fixedly installed on the slider about an axis, and a control unit installed in the housing for controlling the longitudinal movement of the slider according to the angular movement of a spindle shaft when winding the metal pipe at a given pitch, the upper roller and the lower roller are installed on tapered bearings in the housing and made into a plurality of strands, each strand has a center-to-center pitch L for setting the winding density of the serpentine, and the vertical roller is installed in the housing so as to be vertically movable by the slider and an adjusting screw.
The distance between roller vortex centers is determined by the formula:
L= D+T,
wherein D is the outer diameter of the coiled pipe,
t is the gap between coils.
The device can be used for simultaneously winding metal pipes, and at most, eight metal pipes can be simultaneously wound.
The proposed design of the tensioning device for winding metal pipes results from the fact that all known metal pipe bending devices and equipment, in particular for winding metal pipes, have a significant disadvantage in that the pipes as a whole are deformed, and above all in cross section, during bending or winding of metal, in particular thin-walled pipes.
The tensioning device for winding metal pipes is made of multi-strand rolls, has a mechanism for determining the step and angle of winding lifting, and can perform winding according to given parameters, except for deformation of cross section, and the winding productivity is remarkably improved.
The number of tubes wound simultaneously is at most 8, which corresponds to the maximum number of channels possible in the oblique rollers. This parameter is determined experimentally when winding thin-walled tubes with diameters of less than 1000 mm.
Charts, drawings and other bill of materials
The invention is explained by the figures.
Fig. 1 and 3 show a roller with rollers.
Figure 2 shows an end view of the device.
The tensioning device for winding the metal pipeline consists of a sliding block 1 (figure 1), a shaft 2 (figure 3) is arranged on a bracket of the sliding block 1 (required for lifting the tensioning device when installing the pipeline), a shell 3 (figure 1) is fixed on the shaft 2, and a conical bearing 4 (figure 2) and a plurality of movable rollers 5 and 6 (figure 1) are arranged in the shell 3. The lower roll shaft is fixed, and the upper roll shaft 6 is mounted in a slide block 7 and can move vertically by means of screws 8.
Information confirming possibility of implementing the present invention
The tensioning device for rolling up a metal pipe into a serpentine pipe works as follows. When the upper roll is moved relative to the lower roll, the tubing is caught in the roll groove (microbending) and the tubing propulsion is increased, i.e. the tubing tension required to create a tightly coiled heat exchanger is created. A control unit (not shown) is mounted in the slider housing, designed to automatically perform the winding process of the twisted tube of the heat exchanger, and to implement a coordinated control principle of the longitudinal movement of the device slider according to the angular movement of the spindle shaft in a given winding step. It is controlled by an industrial controller which reads the information of the spindle shaft speed sensor. The received information is sent to the control rectifier to maintain the optimal rotational speed of the brake caliper motor.
The tensioner for coiling metal pipe into coiled pipe can expand the technical range of the equipment and coil heat exchanger with diameter up to 2800 mm into coiled pipe.
Thus, the proposed apparatus makes it possible to obtain dense bundles of different diameters and thicknesses and to increase the winding productivity significantly by a factor of 1.8-2.
Claims (3)
1. In a tensioner for winding a metal pipe into a serpentine, comprising an interchangeable upper roller and two interchangeable lower rollers, the upper roller being rotatable and the lower roller being vertically movable, it is provided with a longitudinally movable slider, a housing rotatably and fixedly mounted on the slider, and a control unit mounted in the housing for controlling the longitudinal movement of the slider in accordance with the angular movement of a spindle shaft when winding the metal pipe at a given pitch, the upper roller and the lower roller are mounted on tapered bearings in the housing and made into a plurality of strands, each strand having a center-to-center pitch L for setting the winding density of the serpentine, and the vertical roller is mounted in the housing so as to be vertically movable by the slider and an adjusting screw.
2. The apparatus of claim 1 wherein the distance between roller vortex centers is determined by the formula:
L= D+T,
wherein D is the outer diameter of the coiled pipe,
T is the gap between coils.
3. The apparatus of claim 1, wherein the device is adapted to simultaneously wind up to eight metal tubes.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| RU2021138969A RU2782189C1 (en) | 2021-12-27 | Tensioning device for winding metal pipes into a coil | |
| RU2021138969 | 2021-12-27 | ||
| PCT/RU2022/000391 WO2023128806A1 (en) | 2021-12-27 | 2022-12-26 | Tensioning device for winding metal tubes into a coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117769468A true CN117769468A (en) | 2024-03-26 |
Family
ID=87000025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202280055589.8A Pending CN117769468A (en) | 2021-12-27 | 2022-12-26 | Tensioning device for rolling metal pipeline into coiled pipe |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20240032871A (en) |
| CN (1) | CN117769468A (en) |
| WO (1) | WO2023128806A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3646599A (en) * | 1969-05-26 | 1972-02-29 | Alexander Lightbody | Apparatus for a method of forming coiled tube banks |
| SU659236A1 (en) * | 1977-02-22 | 1979-04-30 | Предприятие П/Я В-2120 | Coiled tube making machine |
| SU1480924A1 (en) * | 1986-12-09 | 1989-05-23 | Научно-производственное объединение "Атомкотломаш" | Apparatus for coiling cylindrical helices |
| RU2169052C2 (en) * | 1999-07-02 | 2001-06-20 | Открытое акционерное общество "ГАЗ" | Apparatus for winding tube oils |
| CN102626734B (en) * | 2012-04-13 | 2014-06-25 | 华东理工大学 | Spiral flat pipe roll forming machine for heat exchanging equipment |
| RU2726859C1 (en) * | 2019-11-15 | 2020-07-16 | Публичное акционерное общество "Машиностроительный завод "ЗиО-Подольск" (ПАО "ЗиО-Подольск") | Assembly complex for manufacturing of twisted heat exchangers |
| RU197731U1 (en) * | 2020-01-31 | 2020-05-25 | Публичное акционерное общество "Машиностроительный завод "ЗиО-Подольск" (ПАО "ЗиО-Подольск") | DEVICE FOR WINDING METAL PIPES IN A COIL |
-
2022
- 2022-12-26 KR KR1020247002839A patent/KR20240032871A/en active Search and Examination
- 2022-12-26 WO PCT/RU2022/000391 patent/WO2023128806A1/en active Application Filing
- 2022-12-26 CN CN202280055589.8A patent/CN117769468A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023128806A1 (en) | 2023-07-06 |
| KR20240032871A (en) | 2024-03-12 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |