CN103495630B - Cold bend forming device for main pipeline of nuclear power station device and core module - Google Patents
Cold bend forming device for main pipeline of nuclear power station device and core module Download PDFInfo
- Publication number
- CN103495630B CN103495630B CN201310455671.2A CN201310455671A CN103495630B CN 103495630 B CN103495630 B CN 103495630B CN 201310455671 A CN201310455671 A CN 201310455671A CN 103495630 B CN103495630 B CN 103495630B
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- core
- main pipeline
- bending device
- cold bending
- tapered sleeve
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Abstract
The invention provides a cold bend forming device for a main pipeline of a nuclear power station device and a core module. The core module comprises at least five core mould units, taper bushes, chain bodies and pins, wherein each core mould unit is composed of an upper core mould and a lower core mould which are arranged oppositely, the taper bushes are matched with the core mould units to enable the core mould units to be capable of sliding relatively, the chain bodies are fixedly connected with the taper bushes and the pins are used for connecting the adjacent chain bodies. The cold bend forming device for the main pipeline of the nuclear power station device and the core module improve the tubular product bend forming quality, and guarantee the ovality and the bent-section radian of the section of a tubular product. Moreover, the core mould can be taken out conveniently and quickly after bend forming.
Description
Technical field
The present invention relates to mechanical manufacturing field, and in particular to a kind of main pipeline cold bending device of nuclear power plant equipment and core group.
Background technology
Nuclear power plant equipment main pipeline is the large thick-wall bearing pipe connecting nuclear power plant reactor pressure vessel, main pump and evaporimeter.Main pipeline is when bending production, and due to the hollow-core construction feature of tubing, the cross section of its plastically deforming area is easy to be crushed wrinkling with inner side, in order to ensure the forming quality of bend pipe, needs in pipe, load filler or core before bending.But utilize the main pipeline curved segment that existing production frock core is produced, shape distortion is comparatively large, and when being dismantled from main pipeline by core, difficulty is comparatively large, wastes man-hour.Therefore, a kind of new bending forming core mold structure is studied significant to the forming quality and operating efficiency that improve nuclear power plant equipment main pipeline.
Summary of the invention
In order to overcome at least one problem existed in prior art, the present invention proposes the core group that a kind of bending pipes shape quality is good, ensure the main pipeline cold bending device of the ellipticity of tubing and the nuclear power plant equipment of curved segment radian.
To achieve these goals, the present invention proposes a kind of core group of main pipeline cold bending device of nuclear power plant equipment, comprising: at least five core assembly form units, and described core unit is made up of the upper core be oppositely arranged and lower core; Tapered sleeve, and described core unit matches, makes described core unit can relative sliding; Serobila, is fixedly connected with described tapered sleeve; Pin, connects adjacent described serobila.
Optionally, described upper core is connected with dovetail groove by the dovetail on described core unit with described lower core.
Optionally, the inwall of described upper core and described lower core is inclined-plane, and beveled ends is step.
Optionally, described tapering is welded with non-slipping block, the inclined-plane inwall of described upper core and described lower core has the groove coordinated with non-slipping block.
Optionally, leave mobile space between the groove on the inclined-plane inwall of described non-slipping block and described core unit, described mobile space is greater than the diameter difference of described tapered sleeve.
Optionally, described tapering is identical with the inwall inclined-plane tapering of described lower core with described upper core.
Optionally, also comprise pull bar, described tapered sleeve is also fixedly linked with described pull bar, and the end of described pull bar has screw thread.
To achieve these goals, the present invention also provides a kind of main pipeline cold bending device of nuclear power plant equipment, has the core group as described in claim arbitrary in claim 1-7.
Optionally, described nuclear power plant equipment comprises the chute supporting main pipeline, and the bottom welding of described chute has rotating shaft.
Optionally, described nuclear power plant equipment comprises base, and the top of described base is the chain connection coordinated with rotating shaft, and described base connects as a whole by a support brace.
The main pipeline cold bending device of nuclear power plant equipment of the present invention and the beneficial effect of core group are mainly manifested in: the main pipeline cold bending device of nuclear power plant equipment of the present invention preferably along with the deformation locus of main pipeline bends, can realize curved segment radian better; In addition, composite core formwork structure contacts with main pipeline inwall substantially completely when maximum outside diameter state, makes the main pipeline ovality after distortion less; Finally, when pull bar relaxes, core mold structure external diameter diminishes, thus conveniently takes out from main pipeline.
Accompanying drawing explanation
Fig. 1 is the structural representation of main pipeline cold bending device of the present invention.
Fig. 2 is the structural representation of core group of the present invention.
Mark in figure: 1 is base, 2 is rotating shaft, and 3 is chute, and 4 is pull bar, 5 is the first nut, and 6 is push rod, and 7 is main pipeline, 8 is support brace, and 9 is spring, and 10 is lower core, 11 is upper left mould, and 12 is upper right mould, and 13 is upper core, 14 is non-slipping block, and 15 is serobila, and 16 is tapered sleeve, 17 is jacking block, and 18 is pin, and 19 is the second nut.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing 1 to 2, the invention will be further described.
The present invention proposes a kind of core group of main pipeline cold bending device of nuclear power plant equipment, comprising: at least five core assembly form units, and described core unit 10,13 is made up of the upper core 13 be oppositely arranged and lower core 10; Tapered sleeve 16, and described core unit 10,13 matches, makes described core unit 10,13 can relative sliding; Serobila 15, is fixedly connected with described tapered sleeve 16; Pin 18, connects adjacent described serobila 15.
More specifically, please refer to Fig. 1, cold bending device comprises two bases 1 and left and right two chutes 3 form main pipeline support section by the rotating shaft 2 be welded on bottom chute, two bases 1 are linked together by support brace 8, base 1 top is all processed as the chain connection coordinated with rotating shaft, in BENDING PROCESS, left and right two chutes 3 are rotated along the mating surface with base 1 by rotating shaft; Left and right push rod 6 is inserted in main pipeline 7, and the length of left and right push rod 6 determines according to the length difference at main pipeline 7 two ends, thus ensures whole device stress balance in BENDING PROCESS; Core unit 10,13 two ends are provided with spring 9, play a protective role, and jacking block 17 is positioned at above core unit 10,13.
In fig. 2, it is composite core formwork, non-slipping block 14, tapered sleeve 16, serobila 15 that the composite core formwork that core unit comprises the outer radius variable be made up of with lower core 10 upper core 13 is connected with dovetail by the dovetail groove on it, be connected by pin 18 between serobila with serobila, this stranded structure can neatly along with the deformation locus of main pipeline bends.Upper left mould 11 and upper right mould 12 are all positioned at the top of core unit 10,13, and serobila is fixed tapered sleeve 16, and tapered sleeve 16 has certain tapering with the mating surface of core, and equally, also there is identical tapering core inside.
Pull bar 4 end is threaded, first nut 5 and the second nut 19 are positioned at the two ends of pull bar 4, for the second nut 19, when being threaded of the second nut 19 and pull bar 4, when the second nut 19 is tightened, pull bar is tightened up, the large end of tapered sleeve is along with the tension outwards movement of pull bar, until the end face of flange of tapered sleeve contacts with the step end face of core, the large end of tapered sleeve, by upper core 13 and lower core 10 jack-up, reaches the maximum outside diameter state of composite core formwork.Now composite core formwork maximum outside diameter is substantially identical with the internal diameter of main pipeline, in BENDING PROCESS, can support main pipeline inwall preferably.When the second nut 19 unclamps, pull bar 4 is in and send relaxed state, tapered sleeve and pull bar simultaneously along tapered sleeve and core to coordinate inclined-plane inwardly to move side dynamic, tapered sleeve 16 small end contacts with core and coordinates, now core 10,13 snaps together up and down, and external diameter diminishes, and can more conveniently take out from main pipeline 7.
In order to prevent upper core 13 and lower core 10 in its diametric(al) along dovetail slide anteroposterior, therefore non-slipping block 14 is set, non-slipping block and will mobile space be left between upper core 13 and lower core 10, this gap should be greater than the diameter difference of tapered sleeve, to ensure the fastening not affecting upper core 13 and lower core 10.
Although the present invention discloses as above with preferred embodiment, so itself and non-limiting the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (8)
1. a core group for the main pipeline cold bending device of nuclear power plant equipment, is characterized in that, comprising: at least five core assembly form units, described core unit is made up of the upper core be oppositely arranged and lower core; Tapered sleeve, and described core unit matches, makes described core unit can relative sliding; Serobila, is fixedly connected with described tapered sleeve; Pin, connects adjacent described serobila;
The mating surface of described tapered sleeve and described upper core and described lower core has certain tapering, and described tapered sleeve is welded with non-slipping block, and the inclined-plane inwall of described upper core and described lower core has the groove coordinated with non-slipping block;
Leave mobile space between groove on the inclined-plane inwall of described non-slipping block and described core unit, described mobile space is greater than the large end of described tapered sleeve and the diameter difference of small end.
2. the core group of main pipeline cold bending device according to claim 1, is characterized in that: described upper core is connected with dovetail groove by the dovetail on described core unit with described lower core.
3. the core group of main pipeline cold bending device according to claim 2, is characterized in that: the inwall of described upper core and described lower core is inclined-plane, and beveled ends is step.
4. the core group of main pipeline cold bending device according to claim 3, is characterized in that: described tapering is identical with the inwall inclined-plane tapering of described lower core with described upper core.
5. the core group of main pipeline cold bending device according to claim 1, it is characterized in that: also comprise pull bar, described tapered sleeve is also fixedly linked with described pull bar, and the end of described pull bar has screw thread.
6. a main pipeline cold bending device for nuclear power plant equipment, is characterized in that: have the core group as described in above arbitrary claim.
7. main pipeline cold bending device according to claim 6, is characterized in that: also comprise the chute supporting main pipeline, the bottom welding of described chute has rotating shaft.
8. main pipeline cold bending device according to claim 7, is characterized in that: also comprise base, and the top of described base is connected with described shaft hinge, and described base connects as a whole by a support brace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310455671.2A CN103495630B (en) | 2013-09-29 | 2013-09-29 | Cold bend forming device for main pipeline of nuclear power station device and core module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310455671.2A CN103495630B (en) | 2013-09-29 | 2013-09-29 | Cold bend forming device for main pipeline of nuclear power station device and core module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103495630A CN103495630A (en) | 2014-01-08 |
| CN103495630B true CN103495630B (en) | 2015-07-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310455671.2A Expired - Fee Related CN103495630B (en) | 2013-09-29 | 2013-09-29 | Cold bend forming device for main pipeline of nuclear power station device and core module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103495630B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109622692A (en) * | 2018-12-17 | 2019-04-16 | 渤海造船厂集团有限公司 | Bend Stainless Steel U pipe internal support device |
| CN115555443B (en) * | 2022-09-23 | 2023-10-20 | 江苏氟豪防腐科技有限公司 | Environment-friendly steel lining tetrafluoro elbow processing device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747394A (en) * | 1972-03-27 | 1973-07-24 | Evans Pipeline Equip Co | Pipe mandrel for use during bending |
| US4086803A (en) * | 1976-06-25 | 1978-05-02 | Crc-Crose International, Inc. | Pipe bending mandrel |
| US4352285A (en) * | 1979-09-06 | 1982-10-05 | Crutcher Resources Corporation | Hydraulic wedge mandrel |
| US4475375A (en) * | 1983-01-24 | 1984-10-09 | Hill Ernest W | Multi-flex tube bending mandrel |
| WO1994022610A1 (en) * | 1993-04-05 | 1994-10-13 | Aluminum Company Of America | Internal articulated mandrel for the stretch forming of elongated hollow metal sections |
| CN2832342Y (en) * | 2005-08-22 | 2006-11-01 | 十堰市风雷工贸有限公司 | Mandrel for manufacturing small curvature radius siphon die |
| CN101244443A (en) * | 2008-03-27 | 2008-08-20 | 二重集团（德阳）重型装备股份有限公司 | Combined shaping mold |
| CN102527791A (en) * | 2012-01-18 | 2012-07-04 | 燕山大学 | Main pipeline brake forming process and device of equipment in nuclear power station |
-
2013
- 2013-09-29 CN CN201310455671.2A patent/CN103495630B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3747394A (en) * | 1972-03-27 | 1973-07-24 | Evans Pipeline Equip Co | Pipe mandrel for use during bending |
| US4086803A (en) * | 1976-06-25 | 1978-05-02 | Crc-Crose International, Inc. | Pipe bending mandrel |
| US4352285A (en) * | 1979-09-06 | 1982-10-05 | Crutcher Resources Corporation | Hydraulic wedge mandrel |
| US4475375A (en) * | 1983-01-24 | 1984-10-09 | Hill Ernest W | Multi-flex tube bending mandrel |
| WO1994022610A1 (en) * | 1993-04-05 | 1994-10-13 | Aluminum Company Of America | Internal articulated mandrel for the stretch forming of elongated hollow metal sections |
| CN2832342Y (en) * | 2005-08-22 | 2006-11-01 | 十堰市风雷工贸有限公司 | Mandrel for manufacturing small curvature radius siphon die |
| CN101244443A (en) * | 2008-03-27 | 2008-08-20 | 二重集团（德阳）重型装备股份有限公司 | Combined shaping mold |
| CN102527791A (en) * | 2012-01-18 | 2012-07-04 | 燕山大学 | Main pipeline brake forming process and device of equipment in nuclear power station |
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| Publication number | Publication date |
|---|---|
| CN103495630A (en) | 2014-01-08 |
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Granted publication date: 20150708 Termination date: 20180929 |