CN203966580U - The L shaped layout underground nuclear power station of nuclear island cavity group - Google Patents
The L shaped layout underground nuclear power station of nuclear island cavity group Download PDFInfo
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- CN203966580U CN203966580U CN201420318068.XU CN201420318068U CN203966580U CN 203966580 U CN203966580 U CN 203966580U CN 201420318068 U CN201420318068 U CN 201420318068U CN 203966580 U CN203966580 U CN 203966580U
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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
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Abstract
The utility model discloses the L shaped layout underground nuclear power station of a kind of nuclear island cavity group, comprise the nuclear island that utilizes nuclear fission energy to produce steam, described nuclear island is arranged in underground hole group, in described underground hole group, reactor building cavern for placing response heap factory building arranges between two parties, for the auxiliary plant cavity group of placing auxiliary plant around the L-shaped layout in described reactor building cavern.This L shaped layout pattern in underground nuclear island of nuclear power station cavern makes existing underground cavern excavation technology meet underground construction of nuclear power station requirement, and cavern's negligible amounts that auxiliary plant cavity group comprises, is beneficial to adjoining rock stability.
Description
Technical field
The utility model relates to underground nuclear power technology, refers to particularly the L shaped layout underground nuclear power station of a kind of nuclear island cavity group.
Background technology
USSR (Union of Soviet Socialist Republics) Chernobyl nuclear accident, U.S. San Li island nuclear accident and Fukushima, Japan nuclear accident show, under extreme accident conditions, existing ground nuclear power station is not enough to effective prevention and control nuclear leakage, guarantees nuclear safety.For this reason, some scholars, research institution's proposition both at home and abroad in underground, utilizes the natural screening effect of rock mass by the large scale business construction of nuclear power station, and nuclear pollution under extreme accident conditions is effectively controlled, and improves the security grade of nuclear power station.The countries and regions such as the U.S., Japan, USSR (Union of Soviet Socialist Republics), Europe from the seventies in last century so far, carried out successively the Conceptual Design Study of underground nuclear power station, the basic ideas of its construction are that nuclear power station is related to nuclear equipment, such as reactor, steam generator, main pump, voltage stabilizer, primary coolant circuit pipe and relevant auxiliary device etc., is placed in underground chamber.This construction mode, equipment layout is flexible, and underground chamber scale is less, and cavern's construction and excavation difficulty is lower.
Although correlative study is had it long ago, there is no in the world the case history of large scale business underground nuclear power station at present.This be mainly because: 1. by the construction of nuclear power station in underground, due to cavern excavation, civil engineering expense will increase to some extent; 2. for the accident rate of reduction equipment operation, in construction of nuclear power station process, should reduce the change with reference to power station existing equipment process system as far as possible.As built thinking according to above-mentioned underground nuclear power station, nuclear power station is related to nuclear equipment according to the space requirement of underground chamber, flexible arrangement is in cavern, although can reduce to a certain extent cavern's scale, but will make the layout and the existing ground reference power station that relate to nuclear equipment have relatively big difference, thereby need carry out a large amount of safety evaluations and demonstration, and not meet third generation in the world Construction of Nuclear Electricity standardization, modular total thinking.
Existing ground each factory building of business nuclear island of nuclear power station, such as reactor building, fuel factory building, electrical building, safe factory building, nuclear auxiliary building etc., its internal unit is arranged all and is proved through strict, has standardization and modular feature.Thus, during large scale business underground nuclear power station is built, should ensure that the version, mutual alignment relation, internal unit layout etc. of each factory building of nuclear island are not carried out large change, to reduce the adjustment of core process system as far as possible.But, be subject to the restriction of underground cavern excavation technology, be difficult to provide enough large cavern, existing ground each factory building of nuclear island is copied built in underground completely.
Version, mutual alignment relation, internal unit layout that ensures each factory building of nuclear island etc. is not carried out large adjustment, can meet the requirement of existing underground cavern excavation technology again, the simplest mode of underground nuclear power station construction is that each factory building of nuclear island in the nuclear power station of existing ground is radially stretched centered by reactor building, each factory building is arranged in different small-sized caverns, thereby presents on the whole the feature being circular layout.So, need to build reactor building cavern, fuel factory building cavern, safe factory building cavern, nuclear auxiliary building cavern, electrical building cavern, connect independently underground chamber such as 6 of factory building caverns etc.Like this in underground hole group excavation, need to arrange three layers, totally 38 construction holes, construction is disturbed large, is unfavorable for cavity group adjoining rock stability.Therefore, be necessary the arrangement form of underground nuclear island cavity group to be optimized, to reduce cavern and a construction hole quantity.
Summary of the invention
The purpose of this utility model provides the nuclear island cavity group of a kind of technical feasibility, economical rationality L shaped layout underground nuclear power station, and existing ground nuclear island of nuclear power station buildings is arranged in subterranean body.
For achieving the above object, the L shaped layout underground nuclear power station of nuclear island cavity group that the utility model is designed, comprise the nuclear island that utilizes nuclear fission energy to produce steam, its special character is: described nuclear island is arranged in underground hole group, in described underground hole group, reactor building cavern for placing response heap factory building arranges between two parties, for the auxiliary plant cavity group of placing auxiliary plant around the L-shaped layout in described reactor building cavern.Wherein, described auxiliary plant cavity group comprise electrical building cavern for placing electrical building and main steam valve, for placing the fuel factory building cavern of fuel factory building, for placing the safe factory building cavern of safety equipment, for placing the auxiliary plant cavern of nuclear auxiliary building.
Preferably, described electrical building cavern and fuel factory building cavern lay respectively on L shaped both sides.So, can ensure that the jet chimney outlet of main steam valve in electrical building cavern and reactor building is on same straight line, the fuel that ensures fuel factory building is imported and exported with the fuel delivery port of reactor building on same straight line, avoided fuel transport passage and main steam line to occur bend, the transportation of being convenient to reload, and reduce main steam line transportation energy consumption.
In order to reduce as much as possible cavern's quantity, reduce civil engineering cost and difficulty of construction, described nuclear auxiliary building cavern, safe factory building cavern and fuel factory building cavern are in the same side, and described nuclear auxiliary building cavern, safe factory building cavern and fuel factory building cavern are same combination cavern.Wherein, in described combination cavern, safe factory building has two, be arranged in fuel factory building both sides, standby each other, so can ensure that, in the situation that accident appears in a safe plant and equipment, another safe factory building can ensure the normal operation of nuclear reactor, in described combination cavern, safe factory building is positioned at the fuel factory building left and right sides.In combination cavern, nuclear auxiliary building is positioned at the leftmost side, and the nuclear auxiliary building of comparing is arranged in the combination rightmost side, cavern, and the bee-line between assembled factory building cavern and electrical building cavern increases to some extent, is conducive to Stability of Excavation Surrounding.
Further, in described electrical building cavern, be provided with electrical building and for controlling the main steam valve chamber of jet chimney folding.So, the stube cable of electrical building and ground central control room and main steam line can be arranged in same tunnel, save construction investment.
Further, between described reactor building cavern and described auxiliary plant cavity group, arrange there is traffic, pipeline, cable, fire-fighting, draught effect be connected tunnel.So, can guarantee that pipeline between each auxiliary plant and reactor building, cable arrangements are in relatively independent tunnel, the staff in Qie Ge auxiliary plant cavern can directly not enter reactor building cavern by other cavern, is beneficial to nuclear safety guard zone.
Again further, described auxiliary plant cavity group peripheral disposition has main access tunnel, each auxiliary plant cavern all has at least two communicating branch holes to be connected with main access tunnel, can guarantee that each auxiliary plant cavern is all directly connected with main access tunnel, be convenient to equipment conveying, avoid the phase mutual interference of constructing between cavern, described main access tunnel two ends are sensible earth's surface all, forms two gateways with ground.So, each auxiliary plant cavern all has two tunnels to be connected with main access tunnel, and main access tunnel two ends are sensible earth's surface all, can guarantee that if an outlet is because of in the impassable situation of accident, personnel can flee from time by another outlet under extreme accident conditions.
In order effectively to control the pressure in reactor building under major accident, the L shaped layout underground nuclear power station of described nuclear island cavity group also comprises pressure release cavern, and described pressure release cavern is positioned at main tunnel inner side, and pressure release cavern communicates with reactor building cavern.
Again further, described reactor building cavern top rock mass or earth's surface are provided with non-active pond, and described non-active pond is connected with reactor building by pipeline, so that chilled water gravity flow enters reactor building under nuclear accident operating mode.
The utility model is arranged in different underground chambers relating to core buildings in nuclear power station, thereby forms the nuclear island underground hole group of L-shaped layout, and its beneficial effect is mainly reflected in:
(1) by each factory building of nuclear island is arranged in different underground chambers, by the controlling space size of single cavern in the scale of built underground chamber, thereby guarantee that the core buildings (as reactor building and with radioactive nuclear auxiliary building) that relates to that existing underground cavern excavation technology can meet in underground nuclear island of nuclear power station is arranged in underground requirement;
(2) by assembled factory building the cavern layout in the right side of reactor building cavern, make fuel factory building in assembled factory building cavern and the position relationship of reactor building cavern, identical with existing ground nuclear power station.Reactor building is built when underground chamber, and its inner structure and core process system, without large adjustment, have reduced underground nuclear power station technical research difficulty.
(3) the fuel factory building in nuclear island, nuclear auxiliary building, safe factory building etc. are built in assembled factory building cavern, effectively reduced the quantity of the main cavern of cavity group, be beneficial to cavity group adjoining rock stability.
(5) non-active pond is arranged in top, reactor building cavern, can utilize potential energy gravity flow for the water supply of reactor spray system in nuclear accident situation.Avoid electric system supply failure under accident conditions, the reactor fire-fighting system causing lost efficacy.
Accompanying drawing explanation
Fig. 1 is the L shaped layout underground nuclear power station of nuclear island cavity group nuclear island buildings graduation figure;
Fig. 2 is plant layout structure schematic diagram in the L shaped layout underground nuclear power station of nuclear island cavity group;
Fig. 3 is the cavern layout structural representation in the L shaped layout underground nuclear power station of nuclear island cavity group.
In figure: reactor building cavern 1, reactor building 1.1, auxiliary plant cavity group 2, electrical building cavern 3, pressure release cavern 4, nuclear auxiliary building cavern 5, safe factory building cavern 6, fuel factory building cavern 7, combination cavern 8, nuclear auxiliary building 51, safe factory building 61, fuel factory building 71, pipeline tunnel 9, equipment conveying tunnel 10, main access tunnel 11, non-active pond 12, main steam valve chamber 13, electrical building 14, pipeline 15, connects tunnel 16, communicating branch tunnel 17.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, but this embodiment should not be construed as restriction of the present utility model.
For reduce the adjustment of core process system as far as possible, within the operating technique level of the construction scale that simultaneously makes underground chamber in current underground chamber, the simplest mode of underground nuclear power station construction is that each factory building of nuclear island in the nuclear power station of existing ground is radially stretched centered by reactor building, each factory building is arranged in different small-sized caverns, thereby presents on the whole the feature being circular layout.So, need to build reactor building cavern, fuel factory building cavern, safe factory building cavern, nuclear auxiliary building cavern, electrical building cavern, connect independently underground chamber such as 6 of factory building caverns etc.Like this in underground hole group excavation, need to arrange three layers, totally 38 construction holes, construction is disturbed large, is unfavorable for underground hole group adjoining rock stability.Therefore, be necessary the arrangement form of underground nuclear island cavity group to be optimized, to reduce cavern and a construction hole quantity.
Due to the fuel transport passage between nuclear fuel factory building and reactor building, the main steam line between main steam valve chamber and reactor building all belongs to rigid connection, should not turn.Therefore, the utility model to the optimum ideals of underground nuclear island cavity group is, the relative position relation that ensures reactor building and fuel factory building, main steam valve chamber is constant, all the other workshop buildings are in the cavern at fuel factory building or main steam valve chamber place, to reduce cavern and a construction hole quantity, thereby form L shaped nuclear island cavity group arrangement form.So arrange, cavern's quantity is reduced to 4 by 6, and a construction hole is reduced to 24 by 38, is beneficial to cavity group adjoining rock stability.Concrete arrangement form, as described below:
Underground nuclear power station nuclear island cavity group L-type arrangement form shown in figure, comprise be arranged on underground for the reactor building cavern 1 of placing response heap factory building 1.1, for placing the auxiliary plant cavity group 2 of auxiliary plant, for containing the pressure release cavern 4 of containment vessel inner high voltage gas under accident conditions.Auxiliary plant cavity group 2 comprises combination cavern 8 and electrical building cavern 3.Reactor building cavern 1 is positioned at the middle part of nuclear island cavity group, 2 groups of auxiliary plant caverns are L-shaped around its layout, wherein combine cavern 8 and be positioned at the long limit of " L " shape, electrical building cavern 3 is positioned at the minor face of " L " shape, and pressure release cavern 4 is positioned at auxiliary plant cavity group offside.
In combination cavern 8, from inboard, mountain to mountain, outside is built the safe factory building 61 of nuclear auxiliary building 51, first, the safe factory building 61 of fuel factory building 71, second successively, is provided with main steam valve chamber 13 and electrical building 14 in electrical building cavern 3.The combination interior leftmost side, cavern 8 is nuclear auxiliary building 51, and the nuclear auxiliary building 51 of comparing is arranged in combination 8 rightmost sides, cavern, and the bee-line that assembled factory building cavern 8 and electrical building cavern are 3 increases to some extent, is conducive to Stability of Excavation Surrounding.Reactor building cavern 1 is cylindrical shape, diameter 46m, high 87m; Combination cavern 8 is gateway opening shape, size 30m * 70.5m * 226m (wide * high * long, lower same); Electrical building cavern 3 is gateway opening shape, size 30m * 60m * 60m; For meeting the requirement of pressure release volume, pressure release cavern 4 is cylindrical shape, diameter 20m, high 42m.
The requirement of hitting for meeting cavern's crown adjoining rock stability and the weapons of system, and through PLASTIC FINITE ELEMENT ANALYSIS, calculate each Mass Near The Top of Underground Cavity rock mass thickness 135m in reactor building cavern 1 and auxiliary plant cavity group 2; For meeting Rock Slide Stability requirement between cavern, through PLASTIC FINITE ELEMENT ANALYSIS, calculate, reactor building cavern 1 and the combination 8 spacing L1 of cavern are 50m, and reactor building cavern 1 and the 3 spacing L2 of electrical building cavern are 50m, and reactor building cavern 1 and the 4 spacing L3 of pressure release cavern are 60m.
For meeting the movement requirement of the main equipment such as steam generator in reactor building, apart from reactor building cavern, 1 bottom 29m eminence construction has equipment conveying tunnel 10, sensible earth's surface; Apart from the high pipeline tunnel 9 that is provided with of the bottom 9m of reactor cavern, in pipeline tunnel 9, be furnished with main steam line, main steam line one end is connected with reactor building 1.1, and the other end is through the main steam valve chamber 13 in electrical building cavern 3, sensible earth's surface, is connected with ground steam turbine factory building; For meeting the requirements such as traffic, fire-fighting, ventilation, cable, pipeline, reactor building cavern 1 communicates by being connected tunnel 16 with combination cavern 8, electrical building cavern 3, pressure release cavern 4; For meeting the requirements such as traffic, fire-fighting, ventilation, combination cavern 8, electrical building cavern 3 all build at least 2 communicating branch holes 17 and are connected with equipment conveying tunnel 10 with main access tunnel 11; Main access tunnel 11 sensible earth's surfaces, two ends, form two gateways with ground.In combination cavern 2, adjacent factory building has shared communicating branch hole 17.
The earth's surface on 1 top, reactor building cavern is provided with non-active pond 12.Non-active pond 12 is connected with reactor building 1.1 spray systems by many pipelines 15, so that chilled water gravity flow enters reactor building 1.1 under nuclear accident operating mode.
The above is only a kind of embodiment of the present utility model, and protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.
Claims (10)
1. the L shaped layout underground nuclear power station of nuclear island cavity group, comprise the nuclear island that utilizes nuclear fission energy to produce steam, it is characterized in that: described nuclear island is arranged in underground hole group, in described underground hole group, reactor building cavern (1) for placing response heap factory building (1.1) arranges between two parties, for the auxiliary plant cavity group (2) of placing auxiliary plant around the L-shaped layout in described reactor building cavern (1).
2. the L shaped layout underground nuclear power station of nuclear island cavity group according to claim 1, is characterized in that: described auxiliary plant cavity group (2) comprises electrical building cavern (3) for placing main steam valve (13) and electrical building (14), for placing the fuel factory building cavern (7) of fuel factory building (71), for placing the safe factory building cavern (6) of safety equipment factory building (61), for placing the auxiliary plant cavern (5) of nuclear auxiliary building (51).
3. the L shaped layout underground nuclear power station of nuclear island cavity group according to claim 2, is characterized in that: described electrical building cavern (3) and fuel factory building cavern (7) lay respectively on L shaped both sides.
4. the L shaped layout underground nuclear power station of nuclear island cavity group according to claim 3, it is characterized in that: described nuclear auxiliary building cavern (5), safe factory building cavern (6) and fuel factory building cavern (7) are in the same side, and described nuclear auxiliary building cavern (5), safe factory building cavern (6) and fuel factory building cavern (7) are same combination cavern (8).
5. the L shaped layout underground nuclear power station of nuclear island cavity group according to claim 4, is characterized in that: in described combination cavern (8), be provided with two safe factory buildings (61), be arranged in fuel factory building (71) both sides.
6. the L shaped layout underground nuclear power station of nuclear island cavity group according to claim 5, is characterized in that: in electrical building cavern (3), be furnished with electrical building (14) and for controlling the main steam valve chamber (13) of jet chimney folding.
7. according to the L shaped layout underground nuclear power station of the nuclear island cavity group described in claim 6, it is characterized in that: between described reactor building cavern (1) and described auxiliary plant cavity group (2), arrange there is traffic, pipeline, cable, fire-fighting, draught effect be connected tunnel (16).
8. according to the L shaped layout underground nuclear power station of the nuclear island cavity group described in claim 7, it is characterized in that: described auxiliary plant cavity group (2) peripheral disposition has main access tunnel (11), each cavern of described auxiliary plant cavity group (2) is all at least provided with two communicating branch holes (17) and is connected with main access tunnel (11), wherein, described main access tunnel (11) two ends are sensible earth's surface all, forms twice gateway.
9. the L shaped layout underground nuclear power station of nuclear island cavity group according to claim 8, it is characterized in that: it also comprises pressure release cavern (4), described pressure release cavern (4) is positioned at main access tunnel (11) inner side, and pressure release cavern (4) communicate with reactor building cavern (1).
10. according to the L shaped layout underground nuclear power station of nuclear island cavity group described in the arbitrary right of claim 1～9, it is characterized in that: described reactor building cavern (1) top rock mass or earth's surface are provided with non-active pond (12), described non-active pond (12) is connected with the reactor building in reactor building cavern (1) by pipeline (15).
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| CN201420318068.XU CN203966580U (en) | 2014-06-13 | 2014-06-13 | The L shaped layout underground nuclear power station of nuclear island cavity group |
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| CN201420318068.XU CN203966580U (en) | 2014-06-13 | 2014-06-13 | The L shaped layout underground nuclear power station of nuclear island cavity group |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064233A (en) * | 2014-06-13 | 2014-09-24 | 长江勘测规划设计研究有限责任公司 | Underground nuclear plant with nuclear island cavern groups distributed in L shape |
| CN105390169A (en) * | 2015-12-28 | 2016-03-09 | 中国核动力研究设计院 | Underground nuclear island workshop of deeply buried nuclear power station |
-
2014
- 2014-06-13 CN CN201420318068.XU patent/CN203966580U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104064233A (en) * | 2014-06-13 | 2014-09-24 | 长江勘测规划设计研究有限责任公司 | Underground nuclear plant with nuclear island cavern groups distributed in L shape |
| CN104064233B (en) * | 2014-06-13 | 2016-08-17 | 长江勘测规划设计研究有限责任公司 | Nuclear island cavity group L-shaped arranges underground nuclear power station |
| CN105390169A (en) * | 2015-12-28 | 2016-03-09 | 中国核动力研究设计院 | Underground nuclear island workshop of deeply buried nuclear power station |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |