CN106024076A - Device for reducing risk of pressure relief tank compartment of nuclear power plant - Google Patents
Device for reducing risk of pressure relief tank compartment of nuclear power plant Download PDFInfo
- Publication number
- CN106024076A CN106024076A CN201610329850.5A CN201610329850A CN106024076A CN 106024076 A CN106024076 A CN 106024076A CN 201610329850 A CN201610329850 A CN 201610329850A CN 106024076 A CN106024076 A CN 106024076A
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- CN
- China
- Prior art keywords
- release case
- power plant
- nuclear power
- containment
- pressure relief
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/001—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices against explosions, e.g. blast shields
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
- G21C9/004—Pressure suppression
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention relates to a device for reducing risk of a pressure relief tank compartment of a nuclear power plant. The device comprises an exhaust pipe (2) connected with a pressure relief tank burst valve (7) through a connecting pipe (12), wherein the exhaust pipe (2) extends to an upper space in a reactor containment, and an exhaust port of the exhaust pipe (2) is located in the upper space in the reactor containment and is away from the containment wall surface. The device is simple in structure, low in manufacturing cost, convenient to mount and maintain and capable of leading vapor and hydrogen exhausted by a pressure relief tank to the large space in the containment, so that aggregation of hydrogen in the pressure relief tank compartment is prevented, and failure of the containment due to explosion of local hydrogen is prevented.
Description
Technical field
The invention belongs to nuclear plant safety System Configuration Technique field, be specifically related to a kind of for reducing core
The device of power plant's release case compartment risk.
Background technology
Release case is nuclear power station for collecting the device of the steam of primary Ioops relief valve discharge, such as Fig. 1
Shown in, release case 6 is usually provided in the release case compartment 5 of containment middle and lower part, and release case 6 connects
Being connected to pressure relief pipeline 10, pressure relief pipeline 10 is connected with manostat 8, additionally, unload by relief valve 9
Pressure case 6 top is also associated with release case explosive valve 7 (see Fig. 3).Under design basis accident, one time
When road occurs transient state or minor break accident, primary Ioops pressure rises, and exceedes the safety on manostat 8
After the unlatching pressure of valve 9, relief valve 9 automatically turns on, thus primary Ioops is cooled down water and passes through relief tube
Road 10 is emitted into release case 6.After nuclear power plant occurs major accident, in order to avoid primary Ioops is at high pressure
Lower generation pressure vessel lost efficacy, and pressurizer safety valve to be passed through or fast pressure relief valve carry out one time
Road release, during this, primary Ioops cryogen discharge is in release case 6.Release case 6 can be by one
Quantitative water, steam are maintained in release case 6, it is to avoid carry active primary Ioops cooling water to enter
Enter containment.
But, when release case 6 due to internal pressure too high time, release case explosive valve 7 meeting at its top
Automatically open up, by primary Ioops cryogen discharge to containment.During major accident, due to mistake
The zirconium cladding of heat can react with steam generation zirconium water, can produce substantial amounts of hydrogen, and these hydrogen pass through
After pressurizer safety valve or fast pressure relief valve enter release case 6, entered by release case explosive valve 7
The release case compartment 5 at release case 6 place.Owing to release case compartment 5 is positioned at containment middle and lower part, empty
The air-flow general character is poor, higher density of hydrogen occurs, it is possible to send out in therefore causing release case compartment 5
The combustion of hydrogen of raw local even explodes, and then threatens the integrity of containment, causes a large amount of radioactivity
Material is to Environment release.
Summary of the invention
For defect present in prior art, it is an object of the invention to provide a kind of for reducing nuclear power
Factory's release case compartment combustion of hydrogen, the device of risk of explosion, this apparatus structure is simple, and cost is low, just
Safeguard in installing, it is possible to the steam, the hydrogen that are discharged by release case are directed to containment large space, keep away
Exempting from hydrogen gathering at release case compartment, the containment preventing localized hydrogen gas blast from causing lost efficacy.
For reaching object above, the technical solution used in the present invention is: one is used for reducing nuclear power plant and unloads
The device of pressure case compartment risk, wherein, it is anti-that the release case compartment for placing release case is located at nuclear power plant
Answering the middle and lower part of heap containment, described release case connects has pressure relief pipeline, pressure relief pipeline to pass through safety
Valve is connected with manostat, and release box top is also associated with release case explosive valve, and described being used for reduces core
The device of power plant's release case compartment risk includes the row being connected by connecting tube with release case explosive valve top
Feed channel, described discharge duct extends to the upper space in containment vessel, and described exhaustor
The air vent in road is positioned at containment vessel upper space and away from containment wall.
Further, connecting tube bottom is connected with explosive valve, and adpting flange and aerofluxus are passed through in connecting tube top
Pipeline is connected.
Further, the air vent of described discharge duct is provided with cover plate.
Further, the structure wall that discharge duct is fixed in containment by some pipeline support assemblies
On.
The present invention provide for the device reducing nuclear power plant's release case compartment risk can eliminate due to
The hydrogen of release case compartment gathers the hydrogen local caused and fires risk, and this apparatus structure is simple,
Cost is low, it is simple to installs and safeguards, can either apply and newly-designed nuclear power plant, it is also possible to for built
Become the technological transformation of nuclear power plant, thus improve the safety of nuclear power plant.
Accompanying drawing explanation
Fig. 1 is the knot of a kind of device for reducing nuclear power plant's release case compartment risk that the present invention provides
Structure schematic diagram；
Fig. 2 is the connection diagram of discharge duct in Fig. 1, connecting tube and release case explosive valve；
Fig. 3 is the connection diagram of existing release case explosive valve and release case.
Detailed description of the invention
The invention will be further described with detailed description of the invention below in conjunction with the accompanying drawings.
As described in Figure 1, the release case that the release case 6 that the present invention relates to is located in containment vessel every
Between in 5, release case 6 connects and has release pipeline 10, release pipeline 10 is by relief valve 9 and steady
Depressor 8 is connected, and release case 6 top is also associated with release case explosive valve 7.
A kind of device for reducing nuclear power plant's release case compartment risk that the present invention provides includes by even
The discharge duct 2 that adapter 12 is connected with release case explosive valve 7, described discharge duct 2 extends to reaction
Upper space in heap containment, the air vent of described discharge duct 2 is positioned at containment vessel top
Space and away from containment wall.
In the present invention, connecting tube 12 bottom is connected with release case explosive valve 7.Connecting tube 12 top leads to
Cross adpting flange 1 to be connected with discharge duct 2, convenient maintenance.
It addition, cover plate 3 can be set on the air vent of discharge duct 2, prevent shower water and foreign body from entering row
Feed channel 2.
Under preferable case, the discharge duct 2 in the present invention can be fixed by some pipeline support assemblies 4
On structure wall 11 in containment, prevent to cause owing to release case explosive valve 7 sprays
Piping displacement.
Under nuclear power station is properly functioning, the cover plate 3 of discharge duct 2 port of export is closed.Under accident conditions,
After release case explosive valve 7 is opened, substantial amounts of steam, hydrogen are entered by release case explosive valve 7
Discharge duct 2, cover plate 3 automatically opens up under gas shock simultaneously, by substantial amounts of steam, hydrogen
It is discharged into containment top large space, thus avoids hydrogen in release case compartment 5 inner accumulated, prevent local
The containment that hydrogen explosion causes lost efficacy.
Structure of the present invention is not limited to the embodiment described in detailed description of the invention, art technology
Personnel draw other embodiment according to technical scheme, also belong to the technology of the present invention
Innovation scope.
Claims (4)
1., for reducing a device for nuclear power plant's release case compartment risk, wherein, it is used for placing release
Release case compartment (5) of case (6) is located at the middle and lower part of nuclear power plant's containment vessel, described release case
(6) upper connection has pressure relief pipeline (10), and pressure relief pipeline (10) passes through relief valve (9) and manostat
(8) being connected, described release case (6) top is also equipped with release case explosive valve (7), it is characterised in that
Described device includes the discharge duct being connected by connecting tube (12) with release case explosive valve (7) top
(2), described discharge duct (2) extends to the upper space in containment vessel, and described aerofluxus
The air vent of pipeline (2) is positioned at containment vessel upper space and away from containment wall.
A kind of device for reducing nuclear power plant's release case compartment risk the most according to claim 1,
It is characterized in that, connecting tube (12) bottom is connected with release case explosive valve (7), in connecting tube (12)
Portion is connected with discharge duct (2) by adpting flange (1).
A kind of dress for reducing nuclear power plant's release case compartment risk the most according to claim 1 and 2
Put, it is characterised in that the air vent of described discharge duct (2) is provided with cover plate (3).
A kind of device for reducing nuclear power plant's release case compartment risk the most according to claim 1,
It is characterized in that, discharge duct (2) is fixed in containment by some pipeline support assemblies (4)
On structure wall (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329850.5A CN106024076B (en) | 2016-05-18 | 2016-05-18 | A kind of device for reducing nuclear power plant's release case compartment risk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610329850.5A CN106024076B (en) | 2016-05-18 | 2016-05-18 | A kind of device for reducing nuclear power plant's release case compartment risk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106024076A true CN106024076A (en) | 2016-10-12 |
| CN106024076B CN106024076B (en) | 2019-11-08 |
Family
ID=57098376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610329850.5A Active CN106024076B (en) | 2016-05-18 | 2016-05-18 | A kind of device for reducing nuclear power plant's release case compartment risk |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106024076B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086308A (en) * | 1975-02-18 | 1978-04-25 | Siemens Aktiengesellschaft | Pressurized relief tank for steam |
| EP0205900A2 (en) * | 1985-06-26 | 1986-12-30 | Westinghouse Electric Corporation | Pressure control system for a pressurized water nuclear reactor plant |
| US4692297A (en) * | 1985-01-16 | 1987-09-08 | Westinghouse Electric Corp. | Control of nuclear reactor power plant on occurrence of rupture in coolant tubes |
| CN102169731A (en) * | 2011-02-14 | 2011-08-31 | 中国核电工程有限公司 | Device and method for quickly relieving pressure in primary circuit of pressurized water reactor nuclear power plant |
| CN103871490A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Pressure-relief apparatus applied for pressurized water reactor nuclear power plant pressurizer pressure-relief box |
| CN103971762A (en) * | 2014-05-05 | 2014-08-06 | 中广核（北京）仿真技术有限公司 | Containment vessel for nuclear power plant |
-
2016
- 2016-05-18 CN CN201610329850.5A patent/CN106024076B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4086308A (en) * | 1975-02-18 | 1978-04-25 | Siemens Aktiengesellschaft | Pressurized relief tank for steam |
| US4692297A (en) * | 1985-01-16 | 1987-09-08 | Westinghouse Electric Corp. | Control of nuclear reactor power plant on occurrence of rupture in coolant tubes |
| EP0205900A2 (en) * | 1985-06-26 | 1986-12-30 | Westinghouse Electric Corporation | Pressure control system for a pressurized water nuclear reactor plant |
| CN102169731A (en) * | 2011-02-14 | 2011-08-31 | 中国核电工程有限公司 | Device and method for quickly relieving pressure in primary circuit of pressurized water reactor nuclear power plant |
| CN103871490A (en) * | 2012-12-14 | 2014-06-18 | 中国核动力研究设计院 | Pressure-relief apparatus applied for pressurized water reactor nuclear power plant pressurizer pressure-relief box |
| CN103971762A (en) * | 2014-05-05 | 2014-08-06 | 中广核（北京）仿真技术有限公司 | Containment vessel for nuclear power plant |
Non-Patent Citations (1)
| Title |
|---|
| 蒋国元 主编: "《WWER-1000核电厂系统与设备》", 30 September 2009, 北京：原子能出版社 * |
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| Publication number | Publication date |
|---|---|
| CN106024076B (en) | 2019-11-08 |
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