CN201133536Y - Reactor main duct hot end elbow pipe blank - Google Patents
Reactor main duct hot end elbow pipe blank Download PDFInfo
- Publication number
- CN201133536Y CN201133536Y CNU2008203004517U CN200820300451U CN201133536Y CN 201133536 Y CN201133536 Y CN 201133536Y CN U2008203004517 U CNU2008203004517 U CN U2008203004517U CN 200820300451 U CN200820300451 U CN 200820300451U CN 201133536 Y CN201133536 Y CN 201133536Y
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- China
- Prior art keywords
- pipe
- main pipeline
- hot end
- reactor
- ozzles
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- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a pipe billet for a reactor main pipeline hot end curved pipe of a third-generation nuclear power station, which satisfies the technological requirements of the reactor of the third-generation nuclear power station to the main pipeline hot end curved pipe. The pipe billet comprises an integrated forged pipe billet body with a whole straight type structure. The pipe billet body is provided with two pipe nozzles. As the integrated forged pipe billet body takes the whole straight type structure is adopted by the pipe billet, the curved section of the hot end curved pipe of the main pipeline can be formed by mold pressing, not only the technological requirements of the hot end curved pipe of the main pipeline are satisfied but also the metallic tissues and performance of the pipe body can be further and effectively guaranteed compared with the hot end curved pipe of the main pipeline processed by the machine, meanwhile the machine processing difficulty is reduced, the metal cutting quantity is smaller and the weight of semi-finished product is decreased by more than 50 percent, thus greatly reducing the difficulty and the cost of the processing production and also being applied for the processing and production of other integrated large-scale pipes with the straight section and the curved section.
Description
Technical field
The utility model relates to a kind of pipe that is used for the hot segment of bent pipe of main pipeline of reactor of third generation nuclear power station.
Background technique
At present, the advanced large-scale AP1000 pressurized-water reactor nuclear power plant of the newly-designed third generation, be at present in the world two generation nuclear power station and two generations add the update type of nuclear power station.Its major advantage have working life from before be increased to 60 years in 40 years, the electric motor power of single seat nuclear power station reaches 1,250,000 kilowatts.Because technology improves, and requires equipment to reduce weld seam as far as possible, reduced a lot of in labour work for inspection amount, advantage such as also have compact structure, Security is good, generated energy is big, but shortcomings such as manufacture difficulty is big are also arranged.It is integrated that its hot segment of bent pipe of main pipeline makes stainless steel monobloc forging band ozzle into by original stainless steel segmentation foundry goods (straight tube adopts centrifugal casting and elbow to adopt conventional cast) welding, and straight tube, elbow, the nozzle design of segmentation become integrated forging, strengthened the difficulty of making.The AP1000 reactor is not also being built unit at present, China takes the lead in starting this type, and hot segment of bent pipe of main pipeline also requires to be the monobloc forging formula and to be with ozzle, because of complex-shaped, manufacture difficulty is very big, and the fabrication scheme that provides is that the method with machining processes after the solid forging.The required stainless steel ingot of forging reaches 150 tons, and pipe orifice almost is difficult to process with the method for machinery, and the tissue of forging and performance also are difficult to guarantee.
The AP1000 hot segment of bent pipe of main pipeline all also there is not ripe manufacturing technology both at home and abroad at present, it is Ultralow Carbon Stainless Steel heavy forging (316LN), therefore similar products like in the world all seldom, all has more technological difficulties on operations such as smelting, forging, brake forming, machining.Hot leg elbow one end length of straight pipe 2235mm, the other end length of straight pipe 1234mm, the centre is the 1.5D bend radius bent pipe, and two integrated ozzles is being arranged shown in Fig. 1～4 near the crooked position place.The external diameter of this hot leg elbow is 952.5mm, and internal diameter is 787.4mm, and the bend angle of bending section is 56.4 °, and its technical requirements is: crooked position out of roundness≤4%, crooked back of the body arc attenuate amount≤12.5%, nominal wall thickness 82.55mm, minimum wall thickness (MINI W.) 72.2mm.
The model utility content
Technical problem to be solved in the utility model provides a kind of pipe that satisfies the hot segment of bent pipe of main pipeline of reactor of third generation nuclear power station technical requirements.
The technological scheme that its technical problem that solves the utility model adopts is: the pipe of hot segment of bent pipe of main pipeline of reactor is characterized in that: comprise the pipe body of the integrative-structure straight tube-like of solid forging, the pipe body is provided with two ozzles.
The nozzle arrangement of above-mentioned pipe can be following two kinds of distribution forms:
A kind ofly be: two ozzles are separated with distance along between axis, and the axis of two ozzles is not at grade.
Another kind is: two ozzles are separated with distance along between axis, and the in the same plane and axis of the axis of two ozzles is 180 °.
The aforementioned tube base substrate all can adopt Ultralow Carbon Stainless Steel to make.
The beneficial effects of the utility model are: owing to adopt the pipe body of the integrative-structure straight tube-like of solid forging, the bending section of hot segment of bent pipe of main pipeline can be by compression molding, not only can satisfy the technical requirements of hot segment of bent pipe of main pipeline, compare with mach hot segment of bent pipe of main pipeline simultaneously, the metal structure of its body and performance can obtain more effectively guaranteeing, also reduced the machining difficulty simultaneously, the metal cutting amount is few, blank weight reduces more than 50%, greatly reduce processing and manufacturing difficulty and cost, also can be applicable to the processing and fabricating that other have the integrated large-size pipe of straight length and bending section.
Description of drawings
Fig. 1 is the plan view of a kind of hot segment of bent pipe of main pipeline of reactor of structural type in the utility model.
Fig. 2 is along the sectional view of A-A direction among Fig. 1.
Fig. 3 is along the sectional view of B-B direction among Fig. 1.
Fig. 4 is the plan view of the hot segment of bent pipe of main pipeline of reactor of another kind of structural type in the utility model.
Fig. 5 is the sectional view of a kind of pipe of hot segment of bent pipe of main pipeline of reactor of structural type in the utility model.
Fig. 6 is the sectional view of the pipe of the hot segment of bent pipe of main pipeline of reactor of another kind of structural type in the utility model.
Be labeled as among the figure: bending section 1, straight length 2, ozzle 3.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified.
As Fig. 1～shown in Figure 4, hot segment of bent pipe of main pipeline of reactor, comprise on the bending section 1 of radius of curvature R=1.5D, the straight length 2 that is arranged on bending section 1 two ends and the straight length 2 body that two ozzles 3 that the position near bending section 1 is provided with constitute, D is the body external diameter.Body can adopt Ultralow Carbon Stainless Steel to make, and body is the integrative-structure of solid forging.The distributing position of two ozzles 3 of above-mentioned hot segment of bent pipe of main pipeline of reactor can be following structural type, a kind ofly be: two ozzles 3 are separately positioned on the straight length 2 at bending section 1 two ends, the axis of two ozzles 3 is not at grade, another kind is: two ozzles 3 are arranged on the straight length 2 of bending section 1 one ends simultaneously, and the axis of two ozzles 3 is in the same plane.
The pipe of hot segment of bent pipe of main pipeline of reactor of the present utility model as shown in Figure 5, comprises the pipe body of the integrative-structure straight tube-like of solid forging, and the pipe body adopts Ultralow Carbon Stainless Steel to make.The pipe body is provided with two ozzles 3.The distributing position of ozzle 3 determines that according to the hot segment of bent pipe of main pipeline of reactor of required making two ozzles 3 are separated with distance along between axis, and the axis of two ozzles (3) can be not at grade, as shown in Figure 5; Perhaps the in the same plane and axis of the axis of two ozzles 3 is 180 °, as shown in Figure 6.
Like this, the making of hot segment of bent pipe of main pipeline of reactor, its bending section 1 can be by compression molding, and straight length 2 and ozzle 3 adopt the machining moulding.Bending section 1 more can guarantee metal structure and the performance of body than bending section 1 by the machining moulding by compression molding, thereby effectively guarantees the technical requirements and the combination property of its body.
Claims (4)
1. the pipe of hot segment of bent pipe of main pipeline of reactor, it is characterized in that: comprise the pipe body of the integrative-structure straight tube-like of solid forging, the pipe body is provided with two ozzles (3).
2. the pipe of hot segment of bent pipe of main pipeline of reactor as claimed in claim 1, it is characterized in that: two ozzles (3) are separated with distance along between axis, and the axis of two ozzles (3) is not at grade.
3. the pipe of hot segment of bent pipe of main pipeline of reactor as claimed in claim 1, it is characterized in that: two ozzles (3) are separated with distance along between axis, and the in the same plane and axis of the axis of two ozzles (3) is 180 °.
4. as the pipe of claim 1,2 or 3 described hot segment of bent pipe of main pipeline of reactor, it is characterized in that: the pipe body adopts Ultralow Carbon Stainless Steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203004517U CN201133536Y (en) | 2008-03-27 | 2008-03-27 | Reactor main duct hot end elbow pipe blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008203004517U CN201133536Y (en) | 2008-03-27 | 2008-03-27 | Reactor main duct hot end elbow pipe blank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201133536Y true CN201133536Y (en) | 2008-10-15 |
Family
ID=40061808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008203004517U Expired - Lifetime CN201133536Y (en) | 2008-03-27 | 2008-03-27 | Reactor main duct hot end elbow pipe blank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201133536Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745782A (en) * | 2008-12-22 | 2010-06-23 | 二重集团（德阳）重型装备股份有限公司 | Method for manufacturing hot segment of bent pipe of main pipeline of reactor |
| CN102632179A (en) * | 2012-03-23 | 2012-08-15 | 江阴南工锻造有限公司 | Semi-closed tool for forging hollow nuclear power main pipe |
| CN103867835A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Integrally forged main pipe |
| CN104511723A (en) * | 2013-09-30 | 2015-04-15 | 江苏永年重型机械有限公司 | Manufacturing method of reactor main pipeline |
| CN108648838A (en) * | 2018-07-11 | 2018-10-12 | 上海核工程研究设计院有限公司 | A kind of double stub (tube) monoblocks forging formula main pipe hot leg structures of heavy caliber |
-
2008
- 2008-03-27 CN CNU2008203004517U patent/CN201133536Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745782A (en) * | 2008-12-22 | 2010-06-23 | 二重集团（德阳）重型装备股份有限公司 | Method for manufacturing hot segment of bent pipe of main pipeline of reactor |
| CN102632179A (en) * | 2012-03-23 | 2012-08-15 | 江阴南工锻造有限公司 | Semi-closed tool for forging hollow nuclear power main pipe |
| CN102632179B (en) * | 2012-03-23 | 2014-06-11 | 江阴南工锻造有限公司 | Semi-closed tool for forging hollow nuclear power main pipe |
| CN103867835A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Integrally forged main pipe |
| CN104511723A (en) * | 2013-09-30 | 2015-04-15 | 江苏永年重型机械有限公司 | Manufacturing method of reactor main pipeline |
| CN108648838A (en) * | 2018-07-11 | 2018-10-12 | 上海核工程研究设计院有限公司 | A kind of double stub (tube) monoblocks forging formula main pipe hot leg structures of heavy caliber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20081015 |