CN103879887A - Centering device for hoisting shell of reactor core of high-temperature gas cooled reactor - Google Patents
Centering device for hoisting shell of reactor core of high-temperature gas cooled reactor Download PDFInfo
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- CN103879887A CN103879887A CN201410119001.8A CN201410119001A CN103879887A CN 103879887 A CN103879887 A CN 103879887A CN 201410119001 A CN201410119001 A CN 201410119001A CN 103879887 A CN103879887 A CN 103879887A
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- 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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Abstract
The invention relates to a centering device for hoisting a shell of a reactor core of a high-temperature gas cooled reactor. The device comprises a top centering caging device and a bottom centering caging device. The top centering caging device is fixed on a primary flange of a reactor pressure vessel and the bottom centering caging device is fixed on a radial rib plate of the shell of reactor core in a supporting manner. While the shell of the reactor core is hoisted into the reactor pressure vessel, the top centering caging device can ensure that the outer wall of the shell of reactor core and the inner wall of the primary flange of the reactor pressure vessel can be within a minimum safe distance, and a bracket of the shell of reactor core and the inner wall of the reactor pressure vessel can be within a minimum safe distance. The bottom centering caging device adopts a bearing rolling structure, so that sliding friction and impact between the inner wall of the reactor pressure vessel and the shell of reactor core during hoisting can be prevented. All of the centering devices can be removed after finishing the hoisting of the shell of the reactor core. The novel centering device provided by the invention provides the safe and reliable guarantee for the large commercial high-temperature gas cooled reactor hoisting process.
Description
Technical field
The present invention relates to a kind of apparatus structure for HTGR reactor core shell lifting centering, be specifically related to the integral hoisting aligning gear technical field of a kind of main equipment and member.
Background technology
Reactor pressure vessel is the important component part of reactor coolant system pressure boundary, reactor pressure vessel is fixed and is contained reactor core shell and in-pile component, the fission reaction of atomic fuel is limited in the space of a sealing to be carried out, it and primary coolant circuit pipe form the pressure boundary of pressure coolant jointly, are to prevent one of second barrier that radiomaterial escapes.
HTGR reactor core shell is the chief component in HTGR, HTGR reactor core shell the inside is graphite stack inner member, the reactor core cavity that takes up fuel sphere be can form, and runner and the duct of fuel sphere, catalyst carrier helium, control arm and absorption bead formed.HTGR core structure is the prose style free from parallelism structure being formed by connecting by tenon, key by several thousand blocks of graphite bricks.The weight of reactor core shell own is large, area is large, setting height(from bottom) has tens meters, so it is very large that lifting reactor core shell is placed on reactor pressure vessel the inside difficulty of construction, in hoisting process, must guarantee that reactor core shell is in place at reactor pressure vessel, measure adjust, centering levelling and final accurately location, namely centering, the damage that should avoid the collision of reactor core shell and reactor pressure vessel to cause in hoisting process, thus cause great potential safety hazard.
In order to address the above problem, must carry out new design to the apparatus structure of HTGR reactor core shell lifting centering, can avoid above-mentioned defect, and realize satisfactorily HTGR reactor core shell and be lifted on the inside of reactor pressure vessel.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of device for HTGR reactor core shell lifting centering.Described device comprises several top centering inhibiting device and several bottom centering inhibiting device.Several top centering inhibiting device are fixed on the main flange of reactor pressure vessel, and several bottom centering inhibiting device supportings are fixed on the radial floor of reactor core shell base.In the time that reactor core shell lifting enters reactor pressure vessel, top centering inhibiting device can be guaranteed between reactor core shell outer wall and the main flange inner wall of reactor pressure vessel, maintain a minimum safety distance between reactor core shell base and reactor pressure vessel cylinder inboard wall.Top centering inhibiting device can adapt to the thick and reactor core shell-reactor pressure vessel spacing of different reactor core shell walls by changing the adjustment cushion block of different-thickness and shape, and adjusting being fastenedly connected of cushion block top screw, to make to adjust the replacing of cushion block convenient and easy in hoisting process.Bottom centering inhibiting device adopts bearing element structure, prevents between reactor pressure vessel inwall and reactor core shell, cliding friction occurring and colliding with in hoisting process.Bottom centering inhibiting device makes reactor core shell be rolled into reactor pressure vessel bottom supporting position downwards along the centering path of designing requirement, can protect the various pipelines between reactor core shell and reactor pressure vessel not collided with simultaneously.Complete after reactor core shell lifting centering, above-mentioned all aligning gears all can be removed completely.Novel hanging aligning gear provides safe and reliable assurance for the hoisting process of the high temperature gas-cooled reactor core shell of large commercial like this.
For a device for HTGR reactor core shell lifting centering, comprise several top centering inhibiting device that are fixed on the main flange of reactor pressure vessel and be fixed on several bottom centering inhibiting device on the radial floor of reactor core shell base.In the time that the lifting of reactor core shell enters reactor pressure vessel, the effect of top centering inhibiting device is to make to keep a minimum safety distance between reactor core shell outer wall and the main flange inner wall of reactor pressure vessel.Deep groove ball bearing on the centering inhibiting device of bottom can roll along reactor pressure vessel inwall, while guaranteeing that the lifting of reactor core shell enters reactor pressure vessel, keeps a minimum safety distance between reactor core shell base and reactor pressure vessel cylinder inboard wall.Aligning gear makes reactor core shell be rolled into reactor pressure vessel bottom supporting position downwards along the centering path of designing requirement, protects the various pipelines between reactor core shell and reactor pressure vessel not collided with simultaneously.Complete after reactor core shell lifting centering, above-mentioned all aligning gears all can be removed completely.
The device of described a kind of HTGR reactor core shell lifting centering of novel metal bellows of the present invention; top aligning gear is clamped in the inside and outside periphery of the main flange of reactor pressure vessel; sealing surface and annex king bolt hole are all directly not stressed, and the inside and outside periphery of main flange and sealing surface have protection pad to prevent from colliding with and crush injury.
The device of a kind of HTGR reactor core shell lifting centering of the present invention, adjustment cushion block in the aligning gear of top adopts top screw fastening to connect, different adjustment pad thickness and shape can adapt to the thick and reactor core shell-reactor pressure vessel gap of different reactor core shell walls, adjust cushion block top screw fastening and connect and can make to change that to adjust cushion block convenient and easy in hoisting process.
The device of a kind of HTGR reactor core shell lifting centering of the present invention, bottom aligning gear adopts bearing arrangement, prevents between reactor pressure vessel inwall and reactor core shell, cliding friction occurring and colliding with in hoisting process.Bearing comprises the bearing arrangement that adopts deep groove ball bearing or other types.
The device of a kind of HTGR reactor core shell lifting centering of the present invention, bottom aligning gear is clamped in the radial floor of reactor core shell base, and clamping piece tightening screw compress gasket can prevent from colliding with and crush injury reactor core shell.
Top of the present invention and bottom aligning gear along the circumferential direction can be arranged 3, or arrange as required more.
Accompanying drawing explanation
Fig. 1 is the top centering inhibiting device figure of this HTGR reactor core shell lifting centering;
Fig. 2 is the bottom centering inhibiting device figure of this HTGR reactor core shell lifting centering;
1: reactor core shell; 2: adjust cushion block tightening screw; 3: adjust cushion block; 4: the main flange protection pad of reactor pressure vessel; 5: the main flange of reactor pressure vessel; 6: centering limiting stopper; 7: centering limiting stopper tightening screw.8: connecting panel tightening screw; 9: the radial floor of reactor core shell base; 10: clamping piece; 11: clamping piece tightening screw; 12: connecting panel; 13: reactor pressure vessel stack shell; 14: bearing spacing washer; 15: axle; 16: deep groove ball bearing; 17: clamping piece tightening screw compress gasket.
The specific embodiment
Referring to Fig. 1, the invention provides a kind of device of HTGR reactor core shell lifting centering, it comprises several top centering inhibiting device.Top centering inhibiting device comprises adjusts cushion block tightening screw 2, adjustment cushion block 3, the main flange protection pad 4 of reactor pressure vessel, centering limiting stopper tightening screw 7 and centering limiting stopper 6.Centering limiting stopper 6 is concave shapes, thereby is clamped and buckled on the main flange 5 of pressure container by centering limiting stopper tightening screw 7; It is L shaped adjusting cushion block 3, by adjusting cushion block tightening screw) be fastenedly connected on centering limiting stopper 6.Top centering inhibiting device is clamped on the main flange 5 of reactor pressure vessel by centering limiting stopper tightening screw 7, and main flange 5 contact surfaces of top centering inhibiting device and reactor pressure vessel are all lined with the main flange protection pad 4 of reactor pressure vessel.Prevent that top centering inhibiting device from colliding with and the main flange 5 of crush injury reactor pressure vessel.Adjustment cushion block 3 in the aligning gear of top adopts adjustment cushion block tightening screw 2 to be fastenedly connected, different adjustment pad thickness and shape can adapt to the thick and reactor core shell-reactor pressure vessel gap of different reactor core shell walls, adjust cushion block top screw 2 and are fastenedly connected and can make to change that to adjust cushion block convenient and easy in hoisting process.
Referring to Fig. 2, the invention provides a kind of device of HTGR reactor core shell lifting centering, it also comprises several bottom centering inhibiting device.Bottom centering inhibiting device comprises connecting panel tightening screw 8, clamping piece 10, clamping piece tightening screw 11, connecting panel 12, bearing spacing washer 14, axle 15, deep groove ball bearing 16, clamping piece tightening screw compress gasket 17.Clamping piece 10 has two, is arranged in the both sides of radial floor 9, fixes by described clamping piece tightening screw 11 and described radial floor 9; Connecting panel 12 has two, fixes, for described two clamping pieces are connected integral by the both sides up and down of 8 respectively with two described connecting panels 12 of connecting panel tightening screw; Between clamping piece 10, be provided with axle 15, arrange and have bearing 16 at axle 15, bearing 16 is given prominence to outside clamping piece 10 and connecting panel 12, and described clamping piece 10 and described connecting panel 12 reach outside described radial floor 9.Bottom centering inhibiting device is clamped on the radial floor 9 of reactor core shell base by clamping piece 10 use clamping piece tightening screws 11, and clamping piece tightening screw 11 compress gaskets 17 can prevent from colliding with and crush injury reactor core shell.Bottom aligning gear adopts deep groove ball bearing 16 bearing arrangements, prevents between reactor pressure vessel inwall and reactor core shell, cliding friction occurring and colliding with in hoisting process.Bearing also can other types bearing arrangement.Bearing spacing washer 14 is arranged between described bearing 16 and clamping piece 10, and clamping piece tightening screw compress gasket 17 is arranged between described clamping piece and radial floor 9, can prevent from colliding with and crush injury reactor core shell.
Because being clamped in the top aligning gear of reactor pressure vessel and being clamped in the radial floor of reactor core shell base bottom aligning gear is circumference, thus can along the circumferential direction respectively arrange 3 according to condition, or arrange as required more.
Above content is only the preferred embodiment of the present invention; should be understood that; for those skilled in the art; do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and replacement; or any dependent claims to claim reconfigures, these improvement and replacement also should be considered as protection scope of the present invention.
Claims (10)
1. the aligning gear for the lifting of HTGR reactor core shell, for the centering between described reactor core shell and described high temperature air-cooled pile pressure container, it is characterized in that: comprise several top centering inhibiting device, described top centering inhibiting device is fixed on the main flange (5) of described pressure container.
2. aligning gear according to claim 1, is characterized in that: also comprise several bottom centering inhibiting device, described bottom centering inhibiting device is fixed on the radial floor of described reactor core shell base (9).
3. according to the aligning gear described in claim 1-2, it is characterized in that: described several top centering inhibiting device and described several bottom centering inhibiting device complete after the lifting centering of described reactor core shell and can remove completely.
4. according to the aligning gear described in claim 1-2, it is characterized in that: described bottom centering inhibiting device comprises adjusts cushion block tightening screw (2), adjustment cushion block (3), centering limiting stopper (6) and centering limiting stopper tightening screw (7); Described centering limiting stopper (6) is concave shape, by described centering limiting stopper tightening screw (7) thus clamp buckle on the main flange (5) of described pressure container; Described adjustment cushion block (3) is L shaped, is fastenedly connected on described centering limiting stopper (6) by described adjustment cushion block tightening screw (2).
5. aligning gear according to claim 4, is characterized in that: also have main flange protection pad (4), it is arranged between main flange (5) contact surface of described top centering inhibiting device and described pressure container.
6. according to the aligning gear described in arbitrary aforementioned claim, it is characterized in that: described bottom centering inhibiting device comprises connecting panel tightening screw (8), connecting panel (12), clamping piece (10), clamping piece tightening screw (11), axle (15) and bearing (16); Described clamping piece (10) has two, is arranged in the both sides of described radial floor (9), fixes by described clamping piece tightening screw (11) and described radial floor (9); Described connecting panel (12) has two, fixes, for described two clamping pieces are connected integral by the both sides up and down of respectively with two described connecting panels of connecting panel tightening screw (8) (12); Between described clamping piece (10), be provided with described axle (15), arrange and have described bearing (16) at described axle (15), described bearing (16) is given prominence to outside described clamping piece (10) and described connecting panel (12), and described clamping piece (10) and described connecting panel (12) reach outside described radial floor (9).
7. aligning gear according to claim 6, it is characterized in that: also there is bearing spacing washer (14) and clamping piece tightening screw compress gasket (17), described bearing spacing washer (14) is arranged between described bearing (16) and described clamping piece (10), and described clamping piece tightening screw compress gasket (17) is arranged between described clamping piece and described radial floor (9).
8. aligning gear according to claim 6, is characterized in that: described bearing is deep groove ball bearing.
9. aligning gear according to claim 1, is characterized in that: described top centering inhibiting device is fixed on the inside and outside periphery that is specifically clamped in the main flange of reactor pressure vessel on the main flange (5) of described pressure container.
10. aligning gear according to claim 1, is characterized in that: described top and bottom centering inhibiting device along the circumferential direction can be arranged 3, or arranges as required more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410119001.8A CN103879887B (en) | 2014-03-27 | 2014-03-27 | A kind of centralising device for the lifting of high temperature gas cooled reactor reactor core shell |
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| CN201410119001.8A CN103879887B (en) | 2014-03-27 | 2014-03-27 | A kind of centralising device for the lifting of high temperature gas cooled reactor reactor core shell |
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| CN103879887A true CN103879887A (en) | 2014-06-25 |
| CN103879887B CN103879887B (en) | 2016-03-30 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106320721A (en) * | 2016-09-09 | 2017-01-11 | 中国核工业二三建设有限公司 | Aligning and leveling device for metal reactor core shell of nuclear power plant |
| CN106320720A (en) * | 2016-09-09 | 2017-01-11 | 中国核工业二三建设有限公司 | Aligning and leveling device for pressure vessel drum and steam generator of nuclear power plant |
| CN106320719A (en) * | 2016-09-09 | 2017-01-11 | 中国核工业二三建设有限公司 | Aligning and leveling method for metal reactor core shell of nuclear power plant |
| CN106402132A (en) * | 2016-06-02 | 2017-02-15 | 华能山东石岛湾核电有限公司 | Special-shaped locking gasket for reactor core shell bearing ball cover plate of high temperature gas cooled reactor |
| CN107818830A (en) * | 2017-09-27 | 2018-03-20 | 中国核工业二三建设有限公司 | The hanging method of HTGR reactor core shell |
| CN109830314A (en) * | 2019-01-29 | 2019-05-31 | 中广核工程有限公司 | Reactor pressure vessel position limiting structure |
| CN111341467A (en) * | 2020-03-17 | 2020-06-26 | 中国核动力研究设计院 | Metal reactor internal member suitable for spherical fuel and high-temperature coolant |
| CN112489839A (en) * | 2020-11-27 | 2021-03-12 | 华能山东石岛湾核电有限公司 | Method for adjusting levelness of reactor core shell bottom plate of high-temperature gas cooled reactor metal reactor internals |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402132A (en) * | 2016-06-02 | 2017-02-15 | 华能山东石岛湾核电有限公司 | Special-shaped locking gasket for reactor core shell bearing ball cover plate of high temperature gas cooled reactor |
| CN106320721A (en) * | 2016-09-09 | 2017-01-11 | 中国核工业二三建设有限公司 | Aligning and leveling device for metal reactor core shell of nuclear power plant |
| CN106320720A (en) * | 2016-09-09 | 2017-01-11 | 中国核工业二三建设有限公司 | Aligning and leveling device for pressure vessel drum and steam generator of nuclear power plant |
| CN106320719A (en) * | 2016-09-09 | 2017-01-11 | 中国核工业二三建设有限公司 | Aligning and leveling method for metal reactor core shell of nuclear power plant |
| CN106320721B (en) * | 2016-09-09 | 2023-10-20 | 中国核工业二三建设有限公司 | Alignment and leveling device for metal reactor core shell of nuclear power station |
| CN106320720B (en) * | 2016-09-09 | 2023-12-15 | 中国核工业二三建设有限公司 | Alignment and leveling device for cylinder body and steam generator of pressure vessel of nuclear power station |
| CN107818830A (en) * | 2017-09-27 | 2018-03-20 | 中国核工业二三建设有限公司 | The hanging method of HTGR reactor core shell |
| CN107818830B (en) * | 2017-09-27 | 2020-09-15 | 中国核工业二三建设有限公司 | Hoisting method of reactor core shell of high-temperature gas cooled reactor |
| CN109830314A (en) * | 2019-01-29 | 2019-05-31 | 中广核工程有限公司 | Reactor pressure vessel position limiting structure |
| CN111341467A (en) * | 2020-03-17 | 2020-06-26 | 中国核动力研究设计院 | Metal reactor internal member suitable for spherical fuel and high-temperature coolant |
| CN111341467B (en) * | 2020-03-17 | 2021-10-22 | 中国核动力研究设计院 | Metal reactor internal member suitable for spherical fuel and high-temperature coolant |
| CN112489839A (en) * | 2020-11-27 | 2021-03-12 | 华能山东石岛湾核电有限公司 | Method for adjusting levelness of reactor core shell bottom plate of high-temperature gas cooled reactor metal reactor internals |
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| Publication number | Publication date |
|---|---|
| CN103879887B (en) | 2016-03-30 |
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Inventor after: Sun Libin Inventor after: Zhang Zhengming Inventor after: Shi Li Inventor after: Wu Shenxin Inventor after: Ni Zhensong Inventor after: Zhang Zhensheng Inventor before: Sun Libin Inventor before: Zhang Zhengming Inventor before: Shi Li Inventor before: Wu Xinshen Inventor before: Ni Zhensong Inventor before: Zhang Zhensheng |
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Free format text: CORRECT: INVENTOR; FROM: SUN LIBIN ZHANG ZHENGMING SHI LI WU XINSHEN NI ZHENSONG ZHANG ZHENSHENG TO: SUN LIBIN ZHANG ZHENGMING SHI LI WU SHENXIN NI ZHENSONG ZHANG ZHENSHENG |
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