CN203026153U - Controllable pressure releasing system for integral reactor - Google Patents
Controllable pressure releasing system for integral reactor Download PDFInfo
- Publication number
- CN203026153U CN203026153U CN2012205421732U CN201220542173U CN203026153U CN 203026153 U CN203026153 U CN 203026153U CN 2012205421732 U CN2012205421732 U CN 2012205421732U CN 201220542173 U CN201220542173 U CN 201220542173U CN 203026153 U CN203026153 U CN 203026153U
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- CN
- China
- Prior art keywords
- controllable pressure
- pressure
- series connection
- controllable
- 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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- 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 utility model provides a controllable pressure releasing system for an integral reactor. The controllable pressure releasing system comprises the integral reactor connected with a pressure stabilizer through a surge pipeline, and three grades of controllable pressure releasing pipelines, wherein one parallel ends of a first-grade and second-grade pressure releasing pipelines are connected with a connection pipe of a steam space of the pressure stabilizer, and the other ends of the first-grade and second-grade pressure releasing pipelines are connected with steam receiving equipment; and one end of a third-grade pressure releasing pipeline is connected with the surge pipeline of the pressure stabilizer, and the other end of the third-grade pressure releasing pipeline directly discharges pressure to the atmosphere in a safety shell. The controllable pressure releasing system disclosed by the utility model has the advantages that a releasing valve is driven by different principles or structures to be opened at different phases, so that a common-mode fault is prevented and the reliability of pressure releasing operation of the reactor is greatly improved; and the combination of the pipeline and the valve for releasing controllable pressure is testable, and an operator can verify whether the combination can provide predicated controllable pressure and flow under a designed working condition.
Description
Technical field
The invention belongs to nuclear power plant's engineered safety system, be specifically related to a kind of setting and be connected in the controllable pressure delivery system of reactor coolant closed circuit, it is applicable in the design basis accident situation, interim ground is the pressure of controlled release reactor progressively, guarantee that the reactor core chilled water continues to be added and replenish, and can not make the larger stress of reactor system increase and load simultaneously.
Background technology
design basis accident occurs during, the cooling problem of reactor core is the gordian technique that is related to npp safety, if reactor core can not obtain enough cooling, reactor temperature, pressure may raise rapidly, very likely cause reactor pressure vessel superpressure or zirconium water reaction generation hydrogen to occur, even cause core meltdown or hydrogen explosion, make and hinder the successive barriers forfeiture that radiomaterial discharges, cause radiomaterial to discharge to environment, although its probability of happening is very low, but to nuclear power plant and surrounding environment, resident's security implication is very large, therefore controlled pressure release system need to be set can provide solution for the realization of Core cooling.
The core cooling system that the nuclear power station that present existing loop type is arranged adopts is active equipment, the controllable pressure delivery system is not set provides measure for Core cooling.When reactor is in specified operating pressure and when need reducing pressure, if suddenly pressure coolant closed circuit and low pressure discharging reception environment are connected, to unload load and the stress that in the system of putting, generation may be difficult to bear at whole pressure, the loss of simultaneous reactions reactor coolant is uncontrollable, may cause Core cooling water deficiency and cause Core uncovering, may cause even more serious consequence thus.
For this reason, a controlled pressure release system of cover need to be set, with the earth pressure release speed reduction reactor pressure gradually of expection, can not produce larger stress and load simultaneously, and effectively control the uncontrollable loss that reactor coolant causes due to release.
Summary of the invention
The purpose of this invention is to provide a kind of integral reactor controllable pressure delivery system, it can guarantee that the pressure of reactor is slowly discharged as requested gradually, and guarantees that reactor core can access the interpolation of enough chilled waters and replenish during design basis accident.
The present invention realizes like this, integral reactor controllable pressure delivery system, it comprises integral reactor, integral reactor is managed with voltage stabilizer by fluctuation and is connected, and also comprises 3 grades of controllable pressure discharge line, wherein, 1 grade of release pipeline and 2 grades of relief tube line parallels one terminate in the adapter of the vapor space of voltage stabilizer, another termination steam receiving equipment, on the fluctuation pipe of 3 grades of release pipeline one termination voltage stabilizers, the other end is airborne release in the containment directly.
Described 1 grade of release pipeline comprises two controllable pressure relief valves of series connection, and two controllable pressure relief valves of series connection, the adapter of the vapor space of the controllable pressure relief valve of above-mentioned two a groups of series connection termination voltage stabilizer in parallel, another termination steam receiving equipment.
Described 2 grades of release pipelines comprise two controllable pressure relief valves of series connection, and two controllable pressure relief valves of series connection, the adapter of the vapor space of the controllable pressure relief valve of above-mentioned two a groups of series connection termination voltage stabilizer in parallel, another termination steam receiving equipment.
Described 3 grades of release pipelines comprise two controllable pressure relief valves of series connection, and two controllable pressure relief valves of series connection, and the controllable pressure relief valves of above-mentioned two a groups of series connection terminations fluctuation pipe in parallel, the other end be airborne release in the containment directly.
advantage of the present invention is, integral reactor controllable pressure delivery system, the design feature of being closely integrated reactor, this system is connected with the reactor coolant closed circuit, requirement according to reactor pressure and earth pressure release, corresponding different earth pressure release pipeline and the composite set of valve are set, controlled release stage by stage with realization response heap pressure, and prevent as far as possible the uncontrollable loss of cooling medium, final stage in reactor pressure release, the combination that controllable pressure discharges pipeline and valve when the relief pressure minimum state is opened, directly the reactor pressure vessel hydrothermal area is communicated with the containment atmosphere, utilizing different principle or structure to drive relief valve opens in different phase, thereby avoided the common mode failure generation, greatly improve reactor pressure and discharged reliability of operation, these provide the pipeline of controllable pressure release and the combination of valve to have testability, to verify that this combination can provide the controlled pressure of expection and the feature of flow to be met under design conditions.
Description of drawings
Fig. 1 is integral reactor controllable pressure delivery system schematic diagram provided by the present invention.
In figure: 1 integral reactor, 2 voltage stabilizers, 3 fluctuation pipes, 4 controllable pressure relief valves, 5 controllable pressure relief valves, 6 controllable pressure relief valves, 7 controllable pressure relief valves, 8 controllable pressure relief valves, 9 controllable pressure relief valves.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments:
As shown in Figure 1, integral reactor controllable pressure delivery system, it comprises that the controllable pressure delivery system is mainly by controlled pressure-release valve, isolation valve and relevant pipeline etc.
Integral reactor 1 is managed 3 by fluctuation and is connected with voltage stabilizer 2, and the controllable pressure delivery system adopts three grades of release modes, and every grade (1 grade, 2 grades, 3 grades) are provided with two row.Wherein, 1 grade and two groups (1 group, 2 groups) of 2 grades of relief tube line parallels compositions, the female pipe of this import of two groups is connected on respectively in the adapter of the vapor space of voltage stabilizer, and is connected with the vapour chamber of voltage stabilizer 2, and the common vent pipe of every group passes through the end tapping equipment and enters the steam receiving equipment.
Controllable pressure delivery system 3rd level release pipeline is one-level, is provided with two row, is connected on the reactor pressure vessel hydrothermal area, on Pressurizer surge line, and direct airborne release in containment during release.
Concrete connected mode is as follows:
Wherein, 1 grade of pressure relief device comprises two controllable pressure relief valves 4 of series connection, and two controllable pressure relief valves 5 of series connection, the adapter of the vapor space of the controllable pressure relief valve of above-mentioned two a groups of series connection termination voltage stabilizer 2 in parallel, another termination steam receiving equipment.
Wherein, 2 grades of pressure relief devices comprise two controllable pressure relief valves 6 of series connection, and two controllable pressure relief valves 7 of series connection, the adapter of the vapor space of the controllable pressure relief valve of above-mentioned two a groups of series connection termination voltage stabilizer 2 in parallel, another termination steam receiving equipment.
Wherein, 3 grades of pressure relief devices comprise two controllable pressure relief valves 8 of series connection, and two controllable pressure relief valves 9 of series connection, and the controllable pressure relief valves of above-mentioned two a groups of series connection terminations fluctuation pipe 3 in parallel, the other end be airborne release in the containment directly.
The present invention arranges corresponding different earth pressure release pipeline and the composite set of valve, controlled release stage by stage with realization response heap pressure, final stage in reactor pressure release, the combination that controllable pressure discharges pipeline and valve when the relief pressure minimum state is opened, directly the reactor pressure vessel hydrothermal area is communicated with the containment atmosphere, these provide the pipeline of controllable pressure release and the combination of valve to have testability.
The composite set that pressure relief valve (4,6) discharges as first class pressure, the composite set that pressure relief valve (5,7) discharges as first class pressure, the composite set that pressure relief valve (8,9) discharges as first class pressure.
Pressure relief valve utilizes different principle or structure to drive relief valve and opens in different phase, thereby has avoided the common mode failure generation.
The final stage that discharges at reactor pressure, the combination that controllable pressure discharges pipeline and valve when the relief pressure minimum state is opened, and directly the reactor pressure vessel hydrothermal area is communicated with the containment atmosphere.
The valve of controllable pressure delivery system has testability, can provide the controlled pressure of expection and the feature of flow to be met under design conditions to verify this combination.
Claims (4)
1. integral reactor controllable pressure delivery system, it is characterized in that: it comprises integral reactor (1), integral reactor (1) is managed (3) by fluctuation and is connected with voltage stabilizer (2), also comprise 3 grades of controllable pressure discharge line, wherein, 1 grade of release pipeline and 2 grades of relief tube line parallels one terminate in the adapter of the vapor space of voltage stabilizer, another termination steam receiving equipment, on the fluctuation pipe (3) of 3 grades of release pipeline one termination voltage stabilizers (2), the other end is airborne release in the containment directly.
2. integral reactor controllable pressure delivery system as claimed in claim 1, it is characterized in that: described 1 grade of release pipeline comprises two controllable pressure relief valves (4) of series connection, and two controllable pressure relief valves (5) of series connection, the adapter of the vapor space of the controllable pressure relief valve of above-mentioned two a groups of series connection termination voltage stabilizer (2) in parallel, another termination steam receiving equipment.
3. integral reactor controllable pressure delivery system as claimed in claim 1, it is characterized in that: described 2 grades of release pipelines comprise two controllable pressure relief valves (6) of series connection, and two controllable pressure relief valves (7) of series connection, the adapter of the vapor space of the controllable pressure relief valve of above-mentioned two a groups of series connection termination voltage stabilizer (2) in parallel, another termination steam receiving equipment.
4. integral reactor controllable pressure delivery system as claimed in claim 1, it is characterized in that: described 3 grades of release pipelines comprise two controllable pressure relief valves (8) of series connection, and two controllable pressure relief valves (9) of series connection, the controllable pressure relief valves of above-mentioned two groups of series connection terminations fluctuation pipes (3) in parallel, the other end are airborne release in the containment directly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205421732U CN203026153U (en) | 2012-10-22 | 2012-10-22 | Controllable pressure releasing system for integral reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012205421732U CN203026153U (en) | 2012-10-22 | 2012-10-22 | Controllable pressure releasing system for integral reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203026153U true CN203026153U (en) | 2013-06-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012205421732U Expired - Lifetime CN203026153U (en) | 2012-10-22 | 2012-10-22 | Controllable pressure releasing system for integral reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203026153U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103778973A (en) * | 2012-10-22 | 2014-05-07 | 中国核动力研究设计院 | Controllable pressure releasing system for integral reactor |
-
2012
- 2012-10-22 CN CN2012205421732U patent/CN203026153U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103778973A (en) * | 2012-10-22 | 2014-05-07 | 中国核动力研究设计院 | Controllable pressure releasing system for integral reactor |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |