CN110097980B - Foundation shock insulation and three-dimensional shock absorption structure of double-containment nuclear power station - Google Patents
Foundation shock insulation and three-dimensional shock absorption structure of double-containment nuclear power station Download PDFInfo
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- CN110097980B CN110097980B CN201910397938.4A CN201910397938A CN110097980B CN 110097980 B CN110097980 B CN 110097980B CN 201910397938 A CN201910397938 A CN 201910397938A CN 110097980 B CN110097980 B CN 110097980B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/022—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using dampers and springs in combination
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C13/00—Pressure vessels; Containment vessels; Containment in general
- G21C13/02—Details
- G21C13/024—Supporting constructions for pressure vessels or containment vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F2222/00—Special physical effects, e.g. nature of damping effects
- F16F2222/08—Inertia
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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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- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- High Energy & Nuclear Physics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Vibration Prevention Devices (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses a foundation shock insulation and three-dimensional shock absorption structure for a double-containment nuclear power station, which comprises an inner containment, an outer containment, a reactor core supporting structure, a reactor core structure, a horizontal shock insulation support, a displacement steering device, a vertical shock insulation support and a vertical damper. According to the basic shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the horizontal shock insulation support and the displacement steering device are arranged, the vertical shock insulation support and the vertical damper are used for generating a three-dimensional shock absorption effect, the special shock resistance safety requirement of the nuclear power station can be met, and the shock resistance safety of the nuclear power station structure is remarkably improved.
Description
Technical Field
The invention belongs to the technical field of double-layer containment nuclear power station shock absorption, and particularly relates to a basic shock insulation and three-dimensional shock absorption structure for a double-layer containment nuclear power station. The invention belongs to a passive control damping system, accords with dynamics and mechanical principles, and improves the anti-seismic safety of related structures and equipment thereof.
Background
In recent years, the construction level of nuclear power plants in China is continuously improved, and the nuclear power plants are gradually developed to the front of the world. Due to the importance of the safety of the nuclear power station and the high cost of accidents, the safety of the infrastructure of the nuclear power station is required to be improved by integrating various technologies, and each factor is critical to be none, especially the earthquake-resistant safety.
At present, a batch of more advanced nuclear power station projects in China all adopt the design concept of a double-layer containment vessel, the double-layer containment vessel is adopted, the inner layer ensures that radioactive substances cannot leak under the condition that a reactor has an accident, the outer layer resists the damage of external impact and can resist the impact similar to that of a commercial large airplane, but the earthquake response of a nuclear power station still needs to be reduced by adopting an advanced technology due to the randomness of the earthquake.
Nuclear power is located same place at the structure to the structure size is compared with the earthquake and is belonged to small-size component, can presume that nuclear power station need not consider earthquake space difference, decomposes earthquake into horizontal and vertical earthquake motion, and in horizontal and vertical earthquake motion, from this, the earthquake causes more serious injury to the reactor easily.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides the foundation shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, which has good shock resistance and stable shock absorption effect and can effectively convert horizontal shock into vertical shock.
According to the base shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the horizontal shock insulation support and the displacement steering device are arranged, so that the inner containment displaces along the horizontal direction relative to the foundation to weaken and reduce the earthquake acting force, the horizontal movement of the inner containment is converted into the vertical movement through the displacement steering device, vertical friction damping force can be formed through the vertical movement, vertical damping of the inner and outer shell structures is provided, vertical vibration of the inner containment vessel and the inner structure of the inner containment vessel is reduced, horizontal displacement of the inner containment vessel is slowed down, a three-dimensional damping effect is generated from two horizontal directions and one vertical direction by using a basic shock isolation and three-dimensional damping structure for a double-containment vessel nuclear power station, the special anti-seismic safety requirement of the nuclear power station can be met, and the anti-seismic safety of the nuclear power station structure is remarkably improved.
The foundation shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station comprises an inner containment, an outer containment, a reactor core supporting structure, a reactor core structure, a horizontal shock insulation support, a displacement steering device, a vertical shock insulation support and a vertical damper, wherein the outer containment is fixedly connected with the ground, the inner containment is connected with a foundation through the horizontal shock insulation support, a bearing member of the reactor core structure is connected with a bottom plate of the inner containment through the vertical shock insulation support, the bearing member of the reactor core structure is connected with the side wall of the inner containment through the vertical damper, and the inner containment is connected with the outer containment through the displacement steering device.
According to the basic shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the horizontal shock insulation support, the displacement steering device, the vertical shock insulation support and the vertical damper are arranged, so that the three-dimensional shock absorption structure for combining the basic shock insulation and the rack-and-pinion vertical shock absorption of the double-containment nuclear power station is used for generating a three-dimensional shock absorption effect from two horizontal directions and one vertical direction, the special shock absorption safety requirement of the nuclear power station can be met, and the shock absorption safety of the nuclear power station structure is obviously improved.
According to the basic shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the horizontal shock insulation support is a laminated rubber support, the horizontal rigidity of the horizontal shock insulation support is smaller than the vertical rigidity, the vertical shock insulation support is installed between a bottom plate of the inner containment and a bearing component of the reactor core structure, the horizontal rigidity of the vertical shock insulation support is larger than the vertical rigidity, and the vertical damper is installed between a support component of the reactor core structure and the side wall of the inner containment.
According to the foundation shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the displacement steering device comprises a first rack connected with the inner containment and a second rack in damping fit with the outer containment along the vertical sliding, the first rack and the second rack are in dynamic coupling connection, and the second rack is driven to slide along the vertical direction relative to the outer containment when the first rack moves horizontally.
According to the foundation shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power plant, the first rack of the displacement steering device is installed on the outer wall of the inner containment and is connected with the upper part of the inner containment.
According to the base shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, a vertical sliding groove is formed in the inner wall of the outer containment, and the second rack of the displacement steering device is mounted on the sliding groove.
According to an embodiment of the present invention, in a base isolation and three-dimensional damping structure for a double containment nuclear power plant, the first rack extends in a transverse direction, an inner end of the first rack is connected to an outer wall of the inner containment, an outer end of the first rack is spaced apart from an inner wall of the outer containment, the second rack extends in a vertical direction, and an inner side surface of the second rack is provided with teeth, and the displacement steering apparatus further includes: a gear engaged between the first and second racks.
According to the basic shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, a first displacement sensor is arranged on the first rack, and a second displacement sensor is arranged on the second rack; the first rack is provided with a first temperature sensor, and the second rack is provided with a second temperature sensor.
According to the foundation shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the displacement steering devices are multiple, and the displacement steering devices are arranged at intervals along the circumferential direction of the inner containment.
According to the foundation shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station, the inner containment comprises a shell body, and the displacement steering device is connected with the upper end of the shell body.
According to one embodiment of the invention, the base shock insulation and three-dimensional shock absorption structure for the double-containment nuclear power station comprises an inner containment and a shell body, wherein the inner containment comprises a tuned mass damper, the tuned mass damper is installed at the top end of the shell body, and the displacement steering device is connected with the tuned mass damper.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic structural diagram of a base isolation and three-dimensional damping structure for a double containment nuclear power plant according to an embodiment of the invention;
fig. 2 is a partial enlarged view of fig. 1 at a, displacement steering apparatus according to an embodiment of the present invention.
FIG. 3 is a schematic structural diagram of a base seismic isolation and three-dimensional damping structure for a double containment nuclear power plant according to another embodiment of the invention;
reference numerals:
a base shock isolation and three-dimensional shock absorption structure 100 for a double containment nuclear power plant; a core support structure 200; a core structure 300; a foundation 400;
an inner containment vessel 11; a case body 111; tuned mass damper 112; an outer containment vessel 12; a chute 121; an inner containment floor 13;
a horizontal seismic isolation bearing 21; a vertical seismic isolation bearing 22; a vertical damper 23; a damping slider 24;
a first displacement sensor 31; a second displacement sensor 32; a first temperature sensor 33; a second temperature sensor 34.
A displacement steering device 4; a first rack 41; a second rack 42; gear 43
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of facilitating the description of the invention and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or both elements may be interconnected. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to meet the requirement that the structure and equipment of a nuclear power station are not allowed to be damaged by earthquake, the structural characteristics of the nuclear power station of a double-containment (an outer containment 12 and an inner containment 11) are exerted according to the actual condition of earthquake three-dimensional vibration (two horizontal directions and one vertical direction). A base isolation and three-dimensional shock absorption structure 100 for a double containment nuclear power plant according to an embodiment of the present invention will be described with reference to fig. 1 to 3.
As shown in fig. 1 to 3, a base-isolation and three-dimensional shock-absorption structure 100 for a double containment nuclear power plant according to an embodiment of the present invention includes: the displacement steering device comprises an inner containment vessel 11, an outer containment vessel 12, a horizontal vibration isolation support 21, a vertical vibration isolation support 22, a vertical damper 23 and the displacement steering device 4.
As shown in fig. 1 and 3, the outer containment vessel 12 is connected with the foundation 400 in a fixed connection manner, the outer containment vessel 12 covers the inner containment vessel 11, the inner containment vessel 11 abandons the traditional fixed connection manner and is installed on a horizontal shock isolation support 21, the horizontal shock isolation support is a shock isolation layer formed by a rubber shock isolation support, the horizontal shock isolation support 21 is installed on the foundation 400, and the horizontal stiffness of the horizontal shock isolation support 21 is smaller than the vertical shock isolation stiffness, so that the stiffness of the horizontal connection between the inner containment vessel 11 and the foundation 400 is smaller, the inner containment vessel 11 can move in the horizontal direction relative to the foundation 400 during an earthquake, and a larger horizontal relative displacement between the inner containment vessel 11 and the outer containment vessel 21 is formed. The outer containment vessel 12 has a large structural rigidity, so the earthquake horizontal displacement is small, while the inner containment vessel 11 has a small structural rigidity, so the inner containment vessel 11 and the outer containment vessel 12 can generate a large horizontal displacement difference. Specifically, the inner containment 11 and the internal structure thereof are isolated from the ground by a horizontal isolation bearing 21, so as to isolate the energy transmitted to the nuclear power plant structure and equipment by the horizontal earthquake.
Specifically, the horizontal shock-insulation support 21 can disperse, weaken and channel the earthquake acting force in a mode that the inner containment vessel 11 vibrates in the horizontal direction relative to the foundation 400, at the moment, the earthquake response of the horizontal shock-insulation support 21 is mainly concentrated on a basic shock-insulation layer, so that the horizontal earthquake motion can be isolated, and the horizontal earthquake motion of the inner containment vessel 12 and the internal structure thereof is reduced.
The displacement steering devices 4 are arranged between the inner containment vessel 11 and the outer containment vessel 12, and the plurality of displacement steering devices 4 are arranged at intervals along the circumferential direction of the inner containment vessel 11.
As shown in fig. 1 to 3, the displacement steering device 4 includes: the safety containment comprises a first rack 41, a second rack 42 and a gear 43, wherein the first rack 41 is provided with a first temperature sensor 33 and a first displacement sensor 31, the second rack 42 is provided with a second temperature sensor 34 and a second displacement sensor 32, the inner wall of the outer containment 12 is provided with a vertical sliding groove 121, and the second rack is mounted on the sliding groove 121.
When the inner containment 11 moves along the horizontal direction relative to the foundation 400, the first rack 41 is driven to move along the horizontal direction, the gear 43 is meshed between the first rack 41 and the second rack 42, the first rack 41 can drive the gear 43 to rotate, the gear 43 rotates to drive the second rack 42 to move, the second rack 42 extends vertically, the gear 43 drives the second rack 42 to move vertically, and then the horizontal movement of the inner containment 11 is converted into the vertical movement of the second rack 42, a vertical friction damping force is formed through the vertical movement, the vertical damping of an inner containment structure and an outer containment structure is provided, and the vertical vibration of the inner containment 11 and an inner structure of the inner containment is reduced. The first displacement sensor 31, the second displacement sensor 3, the first temperature sensor 33, and the second temperature sensor 34 monitor the displacement at the displacement steering device 4 and the ambient temperature in real time.
The second rack 42 is mounted on the sliding groove 121, so that the sliding fit of the second rack 42 relative to the outer containment vessel 12 can be realized through the fit of the sliding groove 121 and the second rack 42, and the fit structure is simple and has high reliability, thereby improving the performance of the displacement steering device 4. Anti-slip patterns can be arranged on the contact surface of the sliding groove 121 and the second rack 42, or anti-slip coatings can be arranged on the contact surface of the sliding groove 121 and the second rack 42 to enhance the sliding friction force between the sliding groove 121 and the second rack 42, so that the sliding damping matching of the second rack 42 and the outer safety shell 12 is realized.
As shown in fig. 1 and 3, the base shock insulation and three-dimensional shock absorption structure 100 for the double-containment nuclear power plant further includes: the inner containment bottom plate 13, the vertical vibration isolation support 22 and the vertical damper 23.
The arrangement of the inner containment vessel bottom plate 13 realizes that the inner containment vessel 11 is installed on the horizontal shock insulation support 21, and the horizontal rigidity of the vertical shock insulation support 22 is greater than the vertical rigidity, so that the vertical shock insulation of the inner containment vessel 11 is realized, and the vertical shock of the inner containment vessel 11 is further reduced; the vertical damper 23 may prevent a collision or the like caused by a relative displacement in a horizontal direction between the core support structure 200 and the inner containment 11, limit an earthquake reaction, and thus protect the core structure 300 connected to the core support structure 200.
In some embodiments, as shown in fig. 1, the inner containment vessel 11 includes a shell body 111, and the displacement steering device 4 is connected to an upper end of the shell body 111, and in the event of an earthquake, the displacement steering device 4 is connected to the upper end of the shell body 111, so that the displacement steering device 4 absorbs horizontal vibration of the inner containment vessel 11, and thus, the horizontal vibration of the inner containment vessel 11 is reduced.
In other embodiments, as shown in fig. 3, the inner containment vessel 11 comprises a shell body 111 and a tuned mass damper 112, the tuned mass damper 112 is mounted at the top end of the shell body 111, the displacement steering device 4 is connected with the tuned mass damper 112, the tuned mass damper can provide a force with almost the same frequency and opposite to the structure movement direction to partially counteract the structure response caused by external excitation in case of earthquake, thereby the tuned mass damper can provide a force with opposite direction to the inner containment vessel 11 by itself to counteract the horizontal displacement of the partial inner containment vessel 11, the displacement steering device 4 is connected with the tuned mass damper 112, so that the displacement steering device 4 absorbs the horizontal vibration of the tuned mass damper 112 to further reduce the horizontal vibration of the inner containment vessel 11.
In some examples, tuned mass damper 112 may be a water tank containing water that may be shaken in the water tank by the horizontal vibration of inner containment vessel 11 when an earthquake occurs, but due to the inertia of the water, the water in the water tank may provide a force that is approximately equal in frequency to the horizontal movement of inner containment vessel 11 and opposite in direction to the movement of inner containment vessel 11, thereby counteracting the shaking force experienced by a portion of inner containment vessel 11.
According to the above description, a basic shock insulation and three-dimensional shock absorption structure used for the double-containment nuclear power station is finally formed, the three-dimensional shock absorption effect is realized through the shock absorption arrangement in the horizontal two directions and the vertical one direction, the special shock-resistant safety requirement of the nuclear power station can be met, and the shock-resistant safety of the nuclear power station structure is remarkably improved.
Claims (5)
1. The basic shock insulation and three-dimensional shock absorption structure of the double-containment nuclear power station is characterized by comprising an inner containment, an outer containment, a reactor core supporting structure, a reactor core structure, a horizontal shock insulation support, a displacement steering device, a vertical shock insulation support and a vertical damper, wherein the outer containment is fixedly connected with the ground; the displacement steering device comprises a first rack connected with the inner containment vessel and a second rack in sliding damping fit with the outer containment vessel along the vertical direction, the first rack is in dynamic coupling connection with the second rack, and the second rack is driven to slide along the vertical direction relative to the outer containment vessel when the first rack moves along the horizontal direction; the first rack of the displacement steering device is arranged on the outer wall of the inner containment vessel and is connected with the upper part of the inner containment vessel; the inner wall of the outer containment is provided with a vertical sliding groove, and the second rack of the displacement steering device is installed on the sliding groove; the first rack extends along the transverse direction, the inner end of the first rack is connected with the outer wall of the inner containment vessel, the outer end of the first rack is spaced apart from the inner wall of the outer containment vessel, the second rack extends along the vertical direction, teeth are arranged on the inner side surface of the second rack, and the displacement steering device further comprises: a gear engaged between the first rack and the second rack; the first rack is provided with a first displacement sensor, and the second rack is provided with a second displacement sensor; the first rack is provided with a first temperature sensor, and the second rack is provided with a second temperature sensor.
2. The structure for shock isolation and three-dimensional shock absorption of a double-containment nuclear power plant as recited in claim 1, wherein the horizontal shock isolation support is a laminated rubber support, the horizontal stiffness of the horizontal shock isolation support is less than the vertical stiffness, the vertical shock isolation support is installed between a bottom plate of the inner containment and a bearing member of the core structure, the horizontal stiffness of the vertical shock isolation support is greater than the vertical stiffness, and the vertical damper is installed between a support member of the core structure and a sidewall of the inner containment.
3. The structure for foundation isolation and three-dimensional shock absorption of a double-containment nuclear power plant as recited in claim 1, wherein the displacement steering devices are plural and are arranged at intervals along the circumference of the inner containment.
4. The double containment nuclear power plant foundation seismic isolation and three-dimensional seismic mitigation structure according to any one of claims 1 to 2, wherein the inner containment comprises a shell body, and the displacement steering device is connected to an upper end of the shell body.
5. The double-containment nuclear power plant foundation seismic isolation and three-dimensional shock absorption structure as claimed in any one of claims 1 to 3, wherein the inner containment comprises a shell body and a tuned mass damper, the tuned mass damper is mounted at the top end of the shell body, and the displacement steering device is connected with the tuned mass damper.
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| CN110725342B (en) * | 2019-10-23 | 2021-03-23 | 东南大学 | Three-dimensional multi-defense line double-raft shock insulation structure suitable for nuclear power station in soft soil area |
| CN110835927B (en) * | 2019-10-30 | 2021-03-09 | 东南大学 | Intelligent nuclear power station composite shock insulation foundation with eddy current energy consumption device |
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| JP2000170826A (en) * | 1998-12-07 | 2000-06-23 | Tokyu Car Corp | Device for and system of controlling vibration and also attitude |
| JP2003302487A (en) * | 2002-04-10 | 2003-10-24 | Babcock Hitachi Kk | Supporting device for nuclear reactor pressure vessel |
| JP2015184138A (en) * | 2014-03-24 | 2015-10-22 | 大成建設株式会社 | Nuclear reactor building |
| CN107369483A (en) * | 2017-07-20 | 2017-11-21 | 上海大学 | A kind of space damping nuclear power plant structure system |
| CN108360368A (en) * | 2018-02-10 | 2018-08-03 | 郑州航空工业管理学院 | A kind of multistage antidetonation bridging apparatus |
| CN108877963A (en) * | 2018-07-09 | 2018-11-23 | 哈尔滨工程大学 | Double containment large nuclear power station three-dimensional isolation structure |
| CN108930343A (en) * | 2018-07-09 | 2018-12-04 | 哈尔滨工程大学 | Small-sized nuclear reactor three-dimensional isolation structure |
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