CN103377727A - Passive safety system design scheme for nuclear power station - Google Patents
Passive safety system design scheme for nuclear power station Download PDFInfo
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- CN103377727A CN103377727A CN2012101142706A CN201210114270A CN103377727A CN 103377727 A CN103377727 A CN 103377727A CN 2012101142706 A CN2012101142706 A CN 2012101142706A CN 201210114270 A CN201210114270 A CN 201210114270A CN 103377727 A CN103377727 A CN 103377727A
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- emergent
- nuclear power
- water source
- power station
- safety system
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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
Abstract
The invention provides a passive safety system design scheme for a nuclear power station. According to the scheme, the gravitational potential energy of a high-order energy emergency water source is utilized, after an emergency accident occurs in a nuclear power station, a flow control assembly rapidly responds and starts, the emergency water source takes part in a safety system of a nuclear power station for playing a role by virtue of three modes including direct heat exchange, a drive hydraulic turbine and hydroelectric generation, so as to bring away heat inside a reactor, inhibit expansion of nuclear accidents, and guarantee the safety of the nuclear power station.
Description
Technical field
The present invention is a kind of used in nuclear power station Safety System Design scheme, belongs to the nuclear energy technology field.
Background technology
Under major accident, nuclear power station is lost various electrical source of power, and the reactor internal heat can't produce and can cause reactor core to melt, and causes serious nuclear accident.Current, all adopt active security system design at labour operation nuclear power station, use emergency diesel dynamo as emergency power pack, drive water pump and make flow of cooling water, guarantee that reactor safety system normally moves.
Weak point: emergency diesel dynamo possibly can't start under the major accident, causes the electrical source of power forfeiture, and active security system can't be worked, thereby serious nuclear accident occurs, such as the Fukushima, Japan nuclear accident.
Summary of the invention
The present invention proposes a kind of design proposal of used in nuclear power station passive safety system.This non-active design proposal is utilized the gravitional force at the emergent water source self of high potential, after the critical accident of nuclear power station occurs, flow control assembly starts, emergent water source participates in the nuclear power plant reactor security system and plays a role with direct heat exchange, driving hydraulic turbine, three kinds of modes of hydropower, takes away the expansion of reactor internal heat, inhibition nuclear accident.This design proposal need not the external impetus power supply, has non-energy dynamic characteristic.
Know-why of the present invention is as described below:
Direct heat exchange mode know-why; There is certain potential energy discrepancy in elevation between emergent water source and the reactor safety system.Show that such as Fig. 1 emergent water source (4) is connected 1 with reactor safety system) use pipeline (3) to connect, pipeline (3) is provided with flow control assembly (2).After critical accident occurs, the flow control assembly action, the chilled water in the emergent water source relies on the gravitional force effect, flows into reactor safety system along pipeline, takes away the reactor heat, guarantees reactor safety.
Drive hydraulic turbine mode know-why; Have certain potential energy discrepancy in elevation between emergent water source and the reactor safety system, the active equipment of reactor safety system comprises the hydraulic turbine type of drive.Show such as Fig. 2 to be connected equipment (1) and to use pipeline (3) connection in emergent water source (4) with reactor safety system, pipeline (3) is provided with flow control assembly (2).After critical accident occurs, the flow control assembly action, the chilled water in the emergent water source relies on the gravitional force effect, flows into the hydraulic turbine of reactor safety system equipment along pipeline, driving arrangement, take away the reactor heat, the expansion of inhibition accident, guarantee reactor safety.
Emergent hydropower mode know-why; There are certain potential energy discrepancy in elevation in emergent water source and emergent hydropower unit.Show such as Fig. 3, emergent water source (4), flow control assembly (2) and emergent hydropower unit (5) are communicated with by pipeline (3), and emergent hydropower unit (5) is connected to the active equipment of reactor safety system (1) by cable (7) through transformation device (6).After critical accident occurs, the flow control assembly action, the water in the emergent water source flows into emergent hydropower unit along pipeline, for its generating and with this as emergency power pack; Emergency power pack is sent into reactor safety system through transformation device, power cable, drives active equipment, takes away the reactor heat, and reactor safety is expanded, guaranteed to the inhibition accident.
Description of drawings:
A kind of structural representation that accompanying drawing 1 is used in nuclear power plant for the present invention's (direct heat exchange mode);
A kind of structural representation that accompanying drawing 2 is used in nuclear power plant for the present invention's (driving the hydraulic turbine mode);
A kind of structural representation that accompanying drawing 3 is used in nuclear power plant for the present invention's (emergent hydropower mode).
Accompanying drawing 4 is the present invention--a kind of embodiment that the direct heat exchange mode is used in nuclear power plant;
In the present embodiment, as emergent water source, use steel pipe (3) is communicated with each several part as flow control assembly, reservoir (4) or elevated tank (5) as security system, explosive valve assembly (2) in the reactor to adopt cooling jacket system (1).After critical accident occurs, the action of explosive valve assembly, the chilled water in reservoir or the elevated tank relies on the gravitional force effect, flow into the cooling jacket system according to designing requirement along pipeline, flow out the cooling jacket system after water temperature raises, take away the reactor heat, guarantee reactor safety.
Accompanying drawing 5 is the present invention--drive a kind of embodiment that the hydraulic turbine mode is used in nuclear power plant;
In the present embodiment, as emergent water source, use steel pipe (3) is communicated with each several part as flow control assembly, reservoir (4) or elevated tank (5) as security system auxiliary feed water pump, explosive valve assembly (2) to adopt turbine pump (a kind of water powered pump drive) (1).After critical accident occurs, the action of explosive valve assembly, the chilled water in reservoir or the elevated tank relies on the gravitional force effect, flow into the hydraulic turbine of turbine pump along pipeline according to designing requirement, drive auxiliary feed water pump to the security system water filling, take away the reactor heat, guarantee reactor safety.
Accompanying drawing 6 is the present invention--a kind of embodiment that emergent hydropower mode is used in nuclear power plant;
In the present embodiment, adopt the emergent hydro-electric power generating equipment of mixed-flow hydropower unit (5) conduct, explosive valve assembly (2) as flow control assembly, reservoir (4) or the emergent water source of elevated tank (8) conduct, use steel pipe (3) connection each several part; Electric centrifugal pump (1) as transformation device, uses power cable (7) to connect the active equipment of generating set, transformation device and safety as security system injection pump, oil-immersed power transformer (6).After critical accident occurs, the action of explosive valve assembly, the chilled water in reservoir or the elevated tank relies on the gravitional force effect, flows into the hydraulic turbine, drives the genset generating as emergency power pack along steel pipe according to designing requirement; The electric power that genset produces drives the electric centrifugal pump operation through transformer, power cable input security system, realizes the function of injecting of security system, takes away the reactor heat, guarantees reactor safety.
Above embodiment only is used for description and interpretation the present invention, and is not limitation of the present invention.According to know-why of the present invention, those of ordinary skill can have the various deformation design to the Safety System Design scheme.Scope of patent protection of the present invention should be defined by the claims.
Claims (8)
1. a used in nuclear power station Safety System Design scheme comprises the essential parts such as emergent water source, pipeline, flow control assembly, reactor safety system; It is characterized in that meeting an urgent need water source dependence gravitional force through pipeline, flow control assembly, flow into security system or emergent hydropower unit in the reactor, realize non-energy dynamic characteristic with direct heat exchange, driving hydraulic turbine or three kinds of modes of hydropower.
2. a kind of used in nuclear power station Safety System Design scheme as claimed in claim 1 is characterized in that various deformation designs that emergent water source is carried out, as:
Utilize physiographic relief or geographical conditions, near the various uses that be built in the nuclear power station, height above sea level is higher than nuclear power station and reservoir, pond or the pool of specification are as emergent water source;
Artificial emergent pond with certain altitude and volume or container, the water tank built, behind the water-filling as emergent water source;
The water at emergent water source can come the water that produces as for natural precipitation, seawater and power plant's seawater desalination system etc.
3. a kind of used in nuclear power station Safety System Design scheme as claimed in claim 1, it is characterized in that utilizing under the critical accident action (such as the explosive valve assembly) of flow control assembly, make emergent water source flow into security system or emergent hydropower unit in the nuclear power plant reactor according to designing requirement through metal or nonmetal pipeline.
As right 1 described with the direct heat exchange mode realize non-can dynamic characteristic, it is characterized in that with emergent water source as ultimate heat sink.
5. a kind of used in nuclear power station Safety System Design scheme as claimed in claim 1, wherein reactor safety system is characterized as various systems and the equipment that the reactor internal heat is outwards shifted.
As right 1 described with the hydropower mode realize non-can dynamic characteristic, it is characterized in that driving emergent hydropower unit with emergent water source, emergency power pack is provided, drive security system equipment; Can replace emergency diesel dynamo group or for subsequent use each other with its common layout.
As right 1 described with drive the hydraulic turbine mode realize non-can dynamic characteristic, it is characterized in that the type of drive of the active equipment of security system comprises hydraulic turbine; Hydraulic turbine pump that is combined with each other such as the active equipment of security system and drawing type hydraulic turbine etc.
8. provide emergency power pack as right 6 is described by the hydropower unit, it is characterized in that power electric that the hydropower unit produces through the facilities such as transformation device, power cable input security system, drives active equipment; Genset can be centrifugal water power generator group, mixed-flow hydropower unit, axial-flow type hydropower unit, impact type hydropower unit etc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101142706A CN103377727A (en) | 2012-04-18 | 2012-04-18 | Passive safety system design scheme for nuclear power station |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012101142706A CN103377727A (en) | 2012-04-18 | 2012-04-18 | Passive safety system design scheme for nuclear power station |
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| CN103377727A true CN103377727A (en) | 2013-10-30 |
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| CN2012101142706A Pending CN103377727A (en) | 2012-04-18 | 2012-04-18 | Passive safety system design scheme for nuclear power station |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578585A (en) * | 2013-11-07 | 2014-02-12 | 中国核电工程有限公司 | Emergency water supply system of nuclear power plant and emergency water supply method |
| CN104464846A (en) * | 2014-12-03 | 2015-03-25 | 中广核工程有限公司 | Passive high-order emergency cooling water supply system for nuclear power plant |
| CN110808109A (en) * | 2019-10-22 | 2020-02-18 | 中国二十冶集团有限公司 | Emergency water supply device for nuclear reactor of nuclear power station in emergency state |
-
2012
- 2012-04-18 CN CN2012101142706A patent/CN103377727A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103578585A (en) * | 2013-11-07 | 2014-02-12 | 中国核电工程有限公司 | Emergency water supply system of nuclear power plant and emergency water supply method |
| CN104464846A (en) * | 2014-12-03 | 2015-03-25 | 中广核工程有限公司 | Passive high-order emergency cooling water supply system for nuclear power plant |
| CN110808109A (en) * | 2019-10-22 | 2020-02-18 | 中国二十冶集团有限公司 | Emergency water supply device for nuclear reactor of nuclear power station in emergency state |
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Application publication date: 20131030 |