CN205354668U - Quick safe shutdown system of nuclear power plant - Google Patents
Quick safe shutdown system of nuclear power plant Download PDFInfo
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- CN205354668U CN205354668U CN201521042038.1U CN201521042038U CN205354668U CN 205354668 U CN205354668 U CN 205354668U CN 201521042038 U CN201521042038 U CN 201521042038U CN 205354668 U CN205354668 U CN 205354668U
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- container
- power plant
- nuclear power
- relief valve
- delivery pump
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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 belongs to the technical field of the reply of small -size pressurized water reactor nuclear power plant accident, concretely relates to quick safe shutdown system of nuclear power plant. Including two the same series, every series is including a delivery pump, a container, a relief valve, the sunction inlet of delivery pump is connected with the bottom of container, the exit linkage of relief valve entry and delivery pump, and the relief valve export is connected with the container, and the export and the pressure vessel of delivery pump are connected, connect through the bridge tube between two series, be provided with bridge tube intercommunication valve on the bridge tube. The container outlet line install the filter. The utility model discloses independently back reaction heap reactor core pours into the solution that contains high concentration neutron poison into, brings the reactor core subcritical state into and maintains certain subcritical degree.
Description
Technical field
This utility model belongs to small-sized PWR nuclear power plant accident reply technical field, is specifically related to a kind of nuclear power plant fast and safely reactor shut-off system.
Background technology
Regulation according to " " 12 " new nuclear power factory safety requirements " that State Bureau of Nuclear Safety issues, nuclear power plant must be provided with the means of reliable safe shutdown, and shutdown means must be at least made up of two differences and independent system, to provide multiformity.ACP100+ intends adopting uncomfortable boron load-following operation pattern, and reactive control adopts burnable poison rod and control rod, and when there is anticipated operational occurrence and with failing the situation of anticipated transient (ATWS) of emergency shut-down, reactor core reactivity is just uncontrollable.For meeting the requirement of relevant laws and regulations, improve npp safety, design a safe and reliable safety shutdown system, overlap shutdown means as second.
Summary of the invention
The purpose of this utility model is in that to provide a kind of nuclear power plant fast and safely reactor shut-off system, it is possible to inject the solution containing high concentration neutron poison to reactor core independently, reactor core is brought into subcritical state and maintains certain subcriticality.
For reaching above-mentioned purpose, technical solution adopted in the utility model is:
A kind of nuclear power plant fast and safely reactor shut-off system, including two identical series, each series includes a delivery pump, container, a relief valve；Conveying pump intake is connected with the bottom of container, and relief valve entrance is connected with conveying delivery side of pump, and relief valve outlet is connected with container, and conveying delivery side of pump is connected with pressure vessel；Connected by bridge tube between two series, bridge tube is provided with bridge tube communicating valve.
Described container outlet line is provided with filter.
Having the beneficial effect that acquired by this utility model
Nuclear power plant described in the utility model fast and safely reactor shut-off system, when there is ATWS accident, is rapidly injected the enough solution containing high concentration neutron poison (such as boric acid H3BO3), reactor core is brought into subcritical state and maintains certain subcriticality；Occur any require that shutdown event and other water sources are unavailable time, native system also can be used to realize reactor core moisturizing (compensating the volume contraction of primary Ioops coolant) and introducing negative reactivity.This utility model configuration is simple, theoretical basis is ripe, is also domestic application in the design of small-sized PWR nuclear power plant first simultaneously.The design of this system, the meaning that China's plan adopts the small-sized presurized water reactor exploitation adjusting boron load-following operation pattern is very great, and it, while filling up the relevant blank of domestic small-sized presurized water reactor design field, also possesses the potentiality cracked the international market.
Accompanying drawing explanation
Fig. 1 is nuclear power plant described in the utility model fast and safely reactor shut-off system structure chart.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, this utility model is described in detail.
As it is shown in figure 1, nuclear power plant described in the utility model fast and safely reactor shut-off system includes two identical series, each series has the capacity of 100%.Each series includes: a delivery pump, a container, a relief valve and corresponding connect pipeline and valve；Conveying pump intake is connected with the bottom of container, and relief valve entrance is connected with conveying delivery side of pump, and relief valve outlet is connected with container, and conveying delivery side of pump is connected with pressure vessel.Connected by bridge tube between two series, bridge tube is provided with bridge tube communicating valve.
Container is the equipment of the solution for storing high concentration neutron poison, and container outlet line is provided with filter, for the impurity in filtering solution.When system is run, start wherein string, by the operation of delivery pump, by the sucking-off pressurizeing from container of the solution containing high concentration neutron poison, through respective lines piii reactor reactor core, reactor core is brought into subcritical state and maintains certain subcriticality；When the container running row lost efficacy, open bridge tube communicating valve, provide the solution containing high concentration neutron poison by the container of spare columns；When the delivery pump running row lost efficacy, start the delivery pump of spare columns.Relief valve realizes the overpressure protection function of system.
When power plant's properly functioning period and generation anticipated operational occurrence, native system is in resting state.When there is ATWS accident and with relevant protection signal, system enters running status.The all electrically-actuated devices of system are all connected to emergency power supply, it is ensured that when power plant's normal power source is lost, effectively putting into operation of system.Occur any require that shutdown event and other water sources are unavailable time, system is also into running status, it is achieved the reactor core moisturizing volume contraction of primary Ioops coolant (compensate) and introducing negative reactivity function.
Claims (2)
1. nuclear power plant's fast and safely reactor shut-off system, it is characterised in that: including two identical series, each series includes a delivery pump, container, a relief valve；Conveying pump intake is connected with the bottom of container, and relief valve entrance is connected with conveying delivery side of pump, and relief valve outlet is connected with container, and conveying delivery side of pump is connected with pressure vessel；Connected by bridge tube between two series, bridge tube is provided with bridge tube communicating valve.
2. nuclear power plant according to claim 1 fast and safely reactor shut-off system, it is characterised in that: described container outlet line is provided with filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042038.1U CN205354668U (en) | 2015-12-15 | 2015-12-15 | Quick safe shutdown system of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521042038.1U CN205354668U (en) | 2015-12-15 | 2015-12-15 | Quick safe shutdown system of nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205354668U true CN205354668U (en) | 2016-06-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521042038.1U Active CN205354668U (en) | 2015-12-15 | 2015-12-15 | Quick safe shutdown system of nuclear power plant |
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| Country | Link |
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| CN (1) | CN205354668U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887259A (en) * | 2015-12-15 | 2017-06-23 | 中国核动力研究设计院 | A kind of nuclear power plant fast and safely reactor shut-off system |
| CN107068221A (en) * | 2017-02-28 | 2017-08-18 | 上海核工程研究设计院 | A kind of standby neutron-absorbing component of spent fuel storage rack |
| CN111292862A (en) * | 2020-03-27 | 2020-06-16 | 江苏核电有限公司 | Emergency reactor shutdown method based on signal state of safety important instrument of nuclear power plant |
-
2015
- 2015-12-15 CN CN201521042038.1U patent/CN205354668U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106887259A (en) * | 2015-12-15 | 2017-06-23 | 中国核动力研究设计院 | A kind of nuclear power plant fast and safely reactor shut-off system |
| CN107068221A (en) * | 2017-02-28 | 2017-08-18 | 上海核工程研究设计院 | A kind of standby neutron-absorbing component of spent fuel storage rack |
| CN107068221B (en) * | 2017-02-28 | 2024-04-09 | 上海核工程研究设计院股份有限公司 | Neutron absorption assembly for spent fuel storage grillwork |
| CN111292862A (en) * | 2020-03-27 | 2020-06-16 | 江苏核电有限公司 | Emergency reactor shutdown method based on signal state of safety important instrument of nuclear power plant |
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| C14 | Grant of patent or utility model | ||
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