CN113035381A - Support structure of nuclear power station voltage stabilizer - Google Patents
Support structure of nuclear power station voltage stabilizer Download PDFInfo
- Publication number
- CN113035381A CN113035381A CN202110171293.XA CN202110171293A CN113035381A CN 113035381 A CN113035381 A CN 113035381A CN 202110171293 A CN202110171293 A CN 202110171293A CN 113035381 A CN113035381 A CN 113035381A
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- Prior art keywords
- support
- voltage stabilizer
- nuclear power
- lug
- ribs
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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.)
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- 239000003381 stabilizer Substances 0.000 title claims abstract description 62
- 239000002356 single layer Substances 0.000 abstract description 5
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C1/00—Reactor types
- G21C1/04—Thermal reactors ; Epithermal reactors
- G21C1/06—Heterogeneous reactors, i.e. in which fuel and moderator are separated
- G21C1/08—Heterogeneous reactors, i.e. in which fuel and moderator are separated moderator being highly pressurised, e.g. boiling water reactor, integral super-heat reactor, pressurised water reactor
- G21C1/09—Pressure regulating arrangements, i.e. pressurisers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a supporting structure of a voltage stabilizer of a nuclear power station, which is characterized in that the supporting structure is arranged in the middle of the voltage stabilizer and comprises a lug fixedly connected with the voltage stabilizer and a support fixedly connected with the voltage stabilizer and a supporting floor slab, and the support is detachably connected with the lug; the support and the voltage stabilizer are arranged in a clearance mode. According to the invention, the single-layer supporting structure is arranged in the middle of the voltage stabilizer, so that the inherent frequency of the equipment is improved and the response of the equipment under the earthquake working condition is reduced while the supporting structure is simplified; meanwhile, a certain gap is formed between the support and the voltage stabilizer, so that the radial displacement of the cylinder of the voltage stabilizer, which is generated due to thermal expansion, can be absorbed, and the support is prevented from generating rigid constraint on the cylinder under the thermal expansion working condition.
Description
Technical Field
The invention relates to the field of structural design of voltage stabilizers of nuclear power plants, in particular to a supporting structure of a voltage stabilizer of a nuclear power plant.
Background
The pressure stabilizer is a closed vertical cylindrical structure device, is used for controlling the pressure in a main loop and protecting overpressure, is one of main devices of a reactor coolant system, and is widely applied to nuclear power stations of various reactor types. The voltage stabilizer belongs to high-temperature and high-pressure equipment, has large thermal expansion amount, and simultaneously has high gravity center and large difficulty in anti-seismic design due to vertical design. The existing supporting scheme is generally composed of an upper layer of supporting structure and a lower layer of supporting structure, the structure is complex, the supporting structure is usually arranged far away from the center of mass, the eccentric bending moment is overlarge under an earthquake, and the thermal expansion of the voltage stabilizer is not fully considered, so that the bearing performance and the service life of equipment are influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a support structure of a voltage stabilizer in a nuclear power station aiming at the defects of the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the supporting structure of the nuclear power station voltage stabilizer is arranged in the middle of the voltage stabilizer and comprises a lug fixedly connected with the voltage stabilizer and a support fixedly connected with the voltage stabilizer and a supporting floor slab, and the support and the lug are detachably connected;
the support and the voltage stabilizer are arranged in a clearance mode.
Preferably, the lug includes a plurality of first rib plates arranged in parallel in the length direction and a plurality of second rib plates connected with the first rib plates, and both the first rib plates and the second rib plates are fixedly connected with the voltage stabilizer.
Preferably, the length direction of the first rib is parallel to the length direction of the voltage stabilizer, and the first rib and the second rib are both perpendicular to the surface of the voltage stabilizer and are fixedly arranged.
Preferably, the support is connected with the second rib plate in a matching mode so as to fix the voltage stabilizer on the support floor.
Preferably, the second rib plate is vertically arranged below the plurality of first rib plates, and the plurality of first rib plates are connected into a whole through the second rib plate.
Preferably, the support comprises a base disposed below the lug, and a cover plate for covering the lug, and the lug is clamped between the base and the cover plate so as to be connected with the support.
Preferably, the lug is connected to the support by interposing the second rib between the base and the cover.
Preferably, the second rib plate comprises fixing edges which are used for being clamped between the base and the cover plate, the fixing edges are symmetrically arranged on two sides of the second rib plate, and the plurality of first rib plates are arranged between the two fixing edges.
Preferably, the base is further provided with a depression for accommodating the second rib, the second rib is placed in the depression, and the cover plate cover is arranged on the fixing edge to clamp and fix the lug on the support.
Preferably, the depth of the depression is greater than or equal to the thickness of the second rib plate.
Preferably, the cover plate and the base are detachably connected through bolts, and bolt holes for accommodating the bolts are correspondingly formed in the cover plate and the base;
the support is fixed on the support floor by the bolts.
Preferably, a plurality of said support structures are circumferentially disposed at the center of mass of said pressurizer.
The invention has the following beneficial effects: by arranging the single-layer supporting structure in the middle of the voltage stabilizer, the inherent frequency of the equipment is improved and the response of the equipment under the earthquake working condition is reduced while the supporting structure is simplified; meanwhile, a certain gap is formed between the support and the voltage stabilizer, so that the radial displacement of the cylinder of the voltage stabilizer, which is generated due to thermal expansion, can be absorbed, and the support is prevented from generating rigid constraint on the cylinder under the thermal expansion working condition.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a support structure and a regulator fixture according to an embodiment of the present invention;
FIG. 2 is a top view of the support structure and stabilizer mounting in accordance with one embodiment of the present invention;
FIG. 3 is a schematic structural view of a support structure according to an embodiment of the present invention;
FIG. 4 is a schematic view of the structure of a lug in one embodiment of the present invention;
fig. 5 is a schematic structural view of a cradle according to an embodiment of the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The support structure of the voltage stabilizer of the nuclear power station provided by the invention is specifically arranged in the middle of the voltage stabilizer 1, and referring to fig. 1, in some embodiments, the support structure can be a circular ring structure and is sleeved and fixed outside the voltage stabilizer 1; in other embodiments, the support structures have the same curvature as the voltage regulator 1, and the plurality of support structures are disposed at the same height of the voltage regulator 1 and are circumferentially spaced apart from the voltage regulator 1. In particular, the support structure may comprise a lug 10 fixedly connected to the potentiostat 1 and a support 20 fixedly connecting the potentiostat 1 to the supporting floor, wherein the support 20 and the lug 10 are removably connected. As a specific embodiment of the invention, the supporting structures are arranged at the center of mass of the voltage stabilizer 1, and the supporting structures are uniformly distributed at the center of mass of the voltage stabilizer 1 along the circumference, so that the eccentric bending moment under the earthquake is greatly reduced.
In some embodiments, the lug 10 is fixedly connected to the regulator 1, and specifically, referring to fig. 4, it may include a plurality of first ribs 11 arranged in parallel in the length direction and a plurality of second ribs 12 connected to the plurality of first ribs 11, specifically, the first ribs 11 may be rectangular or irregular shapes similar to a rectangle, and the length directions of the plurality of first ribs 11 are parallel to each other and are arranged at intervals; the second rib plate 12 is specifically arc-shaped, the second rib plate 12 can be vertically arranged below the first rib plates 11, and the radian of the inner diameter of the second rib plate 12 is consistent with that of the voltage stabilizer 1, so that the inner diameter of the second rib plate 12 can be tightly attached to the voltage stabilizer 1. Further, first floor 11 and the equal perpendicular stabiliser 1 surface setting of second floor, the width direction of a plurality of first floor 11 all sets up towards the centre of a circle of stabiliser 1, second floor 12 sets up along the cross section direction that is on a parallel with stabiliser 1 to when stabiliser 1 is heated back along radial expansion, first floor 11 can follow stabiliser 1 radial outside removal, thereby lug 10 slides relative support 20, lug 10 can not lead to the fact the rigidity constraint to stabiliser 1, thereby can make stabiliser 1 fully release thermal expansion stress.
In some embodiments, referring to fig. 5, the seat 20 may include a base 21 on which the lug 10 is placed, and a cover plate 22 covering the lug 10, the lug 10 being mounted on a support floor by being interposed between the base 21 and the cover plate 22, and the regulator 1 fixed to the lug 10 being further mounted on the support floor by the seat 20. In some embodiments, referring to fig. 3, the base 21 and the cover 22 may be provided in connection with the lug 10 by sandwiching the second rib 12. Referring to fig. 4, the second rib 12 is provided with two fixing edges 121 for the base 21 and the cover 22 to sandwich, as an embodiment of the present invention, it is preferable that the second rib 12 is symmetrically provided with two fixing edges 121, and the plurality of first ribs 11 are disposed between the two fixing edges 121. Preferably, two cover plates 22 are correspondingly arranged on one base 21, and each cover plate 22 is correspondingly arranged above one fixing edge 121. Of course, the fixing edge 121 may have other arrangement modes, which are not described herein. Further, the base 21 is further provided with a recess 211 for accommodating the second rib 12, preferably, the depth of the recess 211 is greater than or equal to the thickness of the second rib 12, so that the second rib 12 is placed in the recess 211, the cover plate 22 is covered on the base 21 and partially protrudes above the recess 211, a fixing groove is formed between the recess 211 and the cover plate 22, and the fixing edge 121 of the second rib 12 is disposed in the fixing groove, so that the lug 10 is vertically limited in the support 20, and the lug 10 and the support 20 are fixedly connected. Further, referring to fig. 2, a gap is provided between the support 20 and the regulator 1, that is, a certain gap exists between the support 20 and the regulator 1, when the regulator 1 expands along the heating edge, the lug 10 moves along with the regulator 1 in the radial direction, the lug 10 can slide relative to the support 20, and the gap between the support 20 and the regulator 1 is used for accommodating the expansion amount of the regulator 1, so as to prevent the support 20 from generating rigid constraint on the regulator 1 under the thermal expansion condition. Further, preferably, the cover plate 22 and the base 21 are detachably connected through bolts, and bolt holes for accommodating the bolts are correspondingly formed in the cover plate 22 and the base 21. The bolts are embodied as anchor bolts which can be used to fixedly connect the support 20 and the lug 10, while the anchor bolts can fix the support 20 to the supporting floor.
By the single-layer supporting structure provided by the invention, the civil engineering design of the supporting floor slab can be simplified, the single-layer floor slab can meet the fixing requirement, and the load of the single-layer floor slab is reduced by 60% compared with the prior art, thereby being beneficial to the design of the voltage stabilizer 1 and the supporting floor slab; the supporting structure is arranged at the center of mass of the voltage stabilizer 1, so that the thermal expansion displacement of the top of the voltage stabilizer 1 can be reduced by 50%, the arrangement of an auxiliary pipeline at the top of the voltage stabilizer 1 is facilitated, and the thermal expansion stress is reduced; the gap between the support 20 and the voltage stabilizer 1 is arranged, so that the thermal expansion stress of the voltage stabilizer 1 can be effectively released; the supporting structure provided by the invention can also greatly reduce the eccentric bending moment under the earthquake, effectively reduce the response under the earthquake, and is beneficial to the design of the stabilizer 1 body and related pipelines and valves.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (12)
1. The supporting structure of the nuclear power station voltage stabilizer is characterized in that the supporting structure is arranged in the middle of a voltage stabilizer (1) and comprises a lug (10) fixedly connected with the voltage stabilizer (1) and a support (20) fixedly connecting the voltage stabilizer (1) with a supporting floor, and the support (20) is detachably connected with the lug (10);
the support (20) and the voltage stabilizer (1) are arranged in a clearance mode.
2. The support structure of nuclear power plant stabiliser as claimed in claim 1, characterized in that the lug (10) comprises a plurality of first ribs (11) arranged in parallel lengthwise and a second rib (12) connecting the plurality of first ribs (11), both the first ribs (11) and the second ribs (12) being fixedly connected to the stabiliser (1).
3. The support structure of nuclear power plant stabiliser according to claim 2, characterized in that the first ribs (11) are arranged in parallel to the length of the stabiliser (1), and the first ribs (11) and the second ribs (12) are arranged fixedly perpendicular to the surface of the stabiliser (1).
4. The support structure of nuclear power plant voltage regulator according to claim 3, characterized in that said seat (20) is coupled with said second rib (12) to fix said voltage regulator (1) on said support floor.
5. The support structure of a nuclear power plant regulator according to claim 4, characterized in that said second ribs (12) are arranged vertically below said first ribs (11), and said first ribs (11) are connected together by said second ribs (12).
6. The support structure of a nuclear power plant regulator according to claim 5, characterized in that said seat (20) comprises a base (21) provided below said lug (10), and a cover plate (22) for covering said lug (10), said lug (10) being interposed between said base (21) and said cover plate (22) so as to be arranged in connection with said seat (20).
7. The support structure of a nuclear power plant regulator according to claim 6, characterized in that said lug (10) is arranged in connection with said seat (20) by interposing said second rib (12) between said base (21) and said cover (22).
8. The support structure of a nuclear power plant regulator according to claim 7, characterized in that said second rib (12) comprises fixing edges (121) for interposing between said base (21) and said cover (22), said fixing edges (121) being symmetrically arranged on either side of said second rib (12), said first ribs (11) being arranged between said fixing edges (121).
9. The support structure of a nuclear power plant regulator according to claim 8, characterized in that said base (21) is further provided with a recess (211) for housing said second rib (12), said second rib (12) being placed in said recess (211), said cover plate (22) being applied over said fixing edge (121) to clamp said lug (10) to said seat (20).
10. The support structure of nuclear power plant regulator of claim 9, characterized in that the depth of the depression (211) is greater than or equal to the thickness of the second rib (12).
11. The support structure of the nuclear power plant regulator according to claim 6, wherein the cover plate (22) and the base (21) are detachably connected through bolts, and bolt holes for accommodating the bolts are correspondingly formed in the cover plate (22) and the base (21);
the bolts secure the support (20) to the support floor.
12. The support structure of nuclear power plant stabiliser as claimed in claim 1, characterized in that several of said support structures are circumferentially arranged at the centre of mass of the stabiliser (1).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171293.XA CN113035381A (en) | 2021-02-03 | 2021-02-03 | Support structure of nuclear power station voltage stabilizer |
| PCT/CN2021/121924 WO2022166233A1 (en) | 2021-02-03 | 2021-09-29 | Support structure of voltage stabilizer of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110171293.XA CN113035381A (en) | 2021-02-03 | 2021-02-03 | Support structure of nuclear power station voltage stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113035381A true CN113035381A (en) | 2021-06-25 |
Family
ID=76460647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110171293.XA Pending CN113035381A (en) | 2021-02-03 | 2021-02-03 | Support structure of nuclear power station voltage stabilizer |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113035381A (en) |
| WO (1) | WO2022166233A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022166233A1 (en) * | 2021-02-03 | 2022-08-11 | 中广核工程有限公司 | Support structure of voltage stabilizer of nuclear power plant |
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| US5152253A (en) * | 1991-01-28 | 1992-10-06 | Westinghouse Electric Corp. | Vessel structural support system |
| CN1641797A (en) * | 2005-01-07 | 2005-07-20 | 清华大学 | Damper-free support system for modular high temperature air-cooled pile pressure casing |
| CN103871497A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Cantilever type supporting device of reactor pressure vessel |
| CN106384608A (en) * | 2016-10-11 | 2017-02-08 | 中国核动力研究设计院 | Hoop straining beam type supporting device used for reactor pressure vessel |
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| CN110853768A (en) * | 2018-08-21 | 2020-02-28 | 中广核工程有限公司 | Nuclear power station voltage stabilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20130077599A (en) * | 2011-12-29 | 2013-07-09 | 두산중공업 주식회사 | A separated shipping skid assembly for pressurizer |
| CN103474105B (en) * | 2012-06-08 | 2016-03-09 | 中国核动力研究设计院 | A kind of reactor pressure vessel modular bearing support |
| CN202650562U (en) * | 2012-06-08 | 2013-01-02 | 中国核动力研究设计院 | Modularized seat support for reactor pressure vessel |
| US12057240B2 (en) * | 2018-07-02 | 2024-08-06 | Invap S.E. | Compact reactor with horizontal steam generators and pressurizer |
| CN110853784B (en) * | 2019-11-19 | 2022-07-29 | 中国核动力研究设计院 | Pressurized water reactor nuclear power plant stabiliser bearing structure |
| CN113035381A (en) * | 2021-02-03 | 2021-06-25 | 中广核工程有限公司 | Support structure of nuclear power station voltage stabilizer |
-
2021
- 2021-02-03 CN CN202110171293.XA patent/CN113035381A/en active Pending
- 2021-09-29 WO PCT/CN2021/121924 patent/WO2022166233A1/en active Application Filing
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| US5152253A (en) * | 1991-01-28 | 1992-10-06 | Westinghouse Electric Corp. | Vessel structural support system |
| CN1641797A (en) * | 2005-01-07 | 2005-07-20 | 清华大学 | Damper-free support system for modular high temperature air-cooled pile pressure casing |
| CN103871497A (en) * | 2012-12-13 | 2014-06-18 | 中国核动力研究设计院 | Cantilever type supporting device of reactor pressure vessel |
| CN106384608A (en) * | 2016-10-11 | 2017-02-08 | 中国核动力研究设计院 | Hoop straining beam type supporting device used for reactor pressure vessel |
| CN206437455U (en) * | 2016-10-27 | 2017-08-25 | 青岛科技大学 | A kind of novel vertical container support structure |
| CN206861492U (en) * | 2017-06-23 | 2018-01-09 | 中国核动力研究设计院 | A kind of presurized water reactor steam generator with horizontal supporting connecting plate |
| CN108364699A (en) * | 2018-04-13 | 2018-08-03 | 中广核研究院有限公司 | A kind of reactor pressure vessel for coolant metal fast reactor |
| CN108962406A (en) * | 2018-08-01 | 2018-12-07 | 中广核研究院有限公司 | Unidirectional slidably supported device for reactor vessel |
| CN109215814A (en) * | 2018-08-01 | 2019-01-15 | 中广核研究院有限公司 | Horizontal supporting structure for multi-vessel system |
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| CN110853768A (en) * | 2018-08-21 | 2020-02-28 | 中广核工程有限公司 | Nuclear power station voltage stabilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022166233A1 (en) * | 2021-02-03 | 2022-08-11 | 中广核工程有限公司 | Support structure of voltage stabilizer of nuclear power plant |
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| Publication number | Publication date |
|---|---|
| WO2022166233A1 (en) | 2022-08-11 |
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