CN105489257A - Nitrogen pressure stabilization and high-pressure safety injection system for nuclear power plant - Google Patents
Nitrogen pressure stabilization and high-pressure safety injection system for nuclear power plant Download PDFInfo
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- CN105489257A CN105489257A CN201610003797.XA CN201610003797A CN105489257A CN 105489257 A CN105489257 A CN 105489257A CN 201610003797 A CN201610003797 A CN 201610003797A CN 105489257 A CN105489257 A CN 105489257A
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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
- G21C9/004—Pressure suppression
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- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
- G21C15/18—Emergency cooling arrangements; Removing shut-down heat
- G21C15/182—Emergency cooling arrangements; Removing shut-down heat comprising powered means, e.g. pumps
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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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- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Structure Of Emergency Protection For Nuclear Reactors (AREA)
Abstract
The invention provides a nitrogen pressure stabilization and high-pressure safety injection system for a nuclear power plant. The system comprises a nitrogen pressurizer, a high-pressure safety injection box and a balance pipe, wherein the nitrogen pressurizer is connected with a reactor pressure vessel through a surge pipeline, and the pressure of a reactor coolant system is relieved through contraction and expansion of nitrogen in the nitrogen pressurizer; the high-pressure safety injection box is connected with the reactor pressure vessel through a high-pressure safety injection box safety injection pipeline, and the balance pipe enables the nitrogen pressurizer and the high-pressure safety injection box to be connected so as to achieve passive high-pressure safety injection. The design is different from that of traditional pressure stabilization systems and high-pressure safety injection systems for the nuclear power plant, the nitrogen pressurizer and the high-pressure safety injection box are combined through the balance pipe to achieve passive high-pressure safety injection, and simpleness and reliability are higher compared with traditional pressure stabilization systems and high-pressure safety injection systems.
Description
Technical field
The present invention relates to one and the present invention relates to nuclear plant safety protection system.
Background technology
In presurized water reactor nuclear power unit, primary Ioops system is a loop, the pressure surge owing to causing when reactor coolant produces temperature variation or volume fluctuations is controlled by steam pressurizer or gas pressurizer, maintenance system is normally run, and can prevent system overpressure by pressurizer safety valve release simultaneously.The safety injection system of nuclear power station ensures that the important engineered safeguards features that accident is upgraded does not appear in reactor when accident conditions.High-pressure injection system is generally the system arranged separately, is furnished with electronic safety injection pump, when reactor coolant loop generation loss of-coolant accident (LOCA), to reactor pressure vessel water filling, ensures core deluge.Devise Core makeup tank in the advanced nuclear power of the third generation, by balance pipe, cold to Core makeup tank and main pipeline section be connected, when reactor coolant loop generation loss of-coolant accident (LOCA), Core makeup tank by gravity to reactor pressure vessel water filling.
Steam pressurizer need configure electric heater and spraying system, could realize Stress control, and gas pressurizer has the advantages such as structure is simple, easy to maintenance; Adopt the High-pressure injection system of safety injection pump, if after loss of power, safety injection pump cannot start, and peace pouring functions also cannot ensure, finally cause reactor core to damage.If a kind of gas pressure-stabilizing system both with voltage stabilizing function can be designed, and there is the system of non-active peace pouring functions, will the system of nuclear power station be simplified, and safety system is more safe and reliable.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, propose one and both realize steady pressure of system function, there is nitrogen stabilization pressure and the High-pressure injection system of the nuclear power station of non-active peace pouring functions simultaneously, described system comprises: nitrogen pressurizer, be connected with reactor pressure vessel by Surge line piping, its pucker & bloat by nitrogen in nitrogen pressurizer alleviates the pressure of reactor coolant loop; High-pressure safety injection case, is connected with reactor pressure vessel by high-pressure safety injection case peace note pipeline; Balance pipe, is connected to realize non-active high-pressure safety injection with described high-pressure safety injection case by described nitrogen pressurizer.
Preferably, bottom described nitrogen pressurizer, be provided with voltage stabilizer peace note pipeline, when reactor coolant loop generation loss of-coolant accident (LOCA), by described voltage stabilizer peace note pipeline to described reactor pressure vessel water filling; When reactor coolant loop normally runs, isolate the high-pressure safety injection function of described high-pressure safety injection case to described reactor pressure vessel by high-pressure safety injection case peace note pipeline isolation valve, and isolate the peace pouring functions of described nitrogen pressurizer to described reactor pressure vessel by voltage stabilizer peace note pipeline isolation valve.
Preferably, described system also comprises: elevated pressure nitrogen gas tank, be connected with nitrogen pressurizer through described balance pipe by elevated pressure nitrogen gas tank gas supply line, when the reduction of reactor coolant loop pressure exceeds voltage stabilizer self-regulation scope, supplement nitrogen by described elevated pressure nitrogen gas tank to described nitrogen pressurizer, make pressure recover normal operating value; Release case, is connected with described nitrogen pressurizer through described balance pipe by release pipeline, when the rising of reactor coolant loop pressure exceeds described nitrogen pressurizer self-regulation scope, by release case discharge nitrogen, makes pressure recover normal operating value; Air compressor machine, is arranged between elevated pressure nitrogen gas tank and release case, for returning elevated pressure nitrogen gas tank by after the nitrogen pressurization in release case by nitrogen return line.
Preferably, described release case is also as the device storing nitrogen during reactor coolant loop release.
Preferably, described system also comprises: pressurizer safety valve, and it is arranged on the pressurizer safety valve release pipeline that is connected with described nitrogen pressurizer, for performing overpressure protection function; Elevated pressure nitrogen gas tank safety valve, it is arranged on the elevated pressure nitrogen gas tank safety valve release pipeline that is connected with described elevated pressure nitrogen gas tank, for performing overpressure protection function; And release case safety valve, it is arranged on the release case safety valve release pipeline that is connected with described release case, for performing overpressure protection function.
Preferably, described system also comprises: elevated pressure nitrogen gas tank isolation valve, and it is arranged on the elevated pressure nitrogen gas tank gas supply line that is connected with described elevated pressure nitrogen gas tank; And release pipeline isolation valve, it is arranged on the release pipeline that is connected with described release case; When reactor coolant loop pressure is in steady state (SS), described elevated pressure nitrogen gas tank isolation valve and described release pipeline isolation valve are in closed condition;
Preferably, when reactor coolant loop pressure is higher than described nitrogen pressurizer range of adjustment, described release pipeline isolation valve is opened, to the release of described release case; When reactor coolant loop pressure is lower than described nitrogen pressurizer range of adjustment, described elevated pressure nitrogen gas tank isolation valve is opened, and injects high pressure nitrogen to described nitrogen pressurizer.
Preferably, when in described elevated pressure nitrogen gas tank, nitrogen pressure drops to certain value, open described air compressor machine, described elevated pressure nitrogen gas tank is injected by after the nitrogen pressurization in described release case, when in described elevated pressure nitrogen gas tank, nitrogen pressure is elevated to certain value, close described air compressor machine, thus ensure the gas supply capacity of described elevated pressure nitrogen gas tank, and the reception nitrogen ability of described release case.
Preferably, when reactor coolant loop generation loss of-coolant accident (LOCA), open described high-pressure safety injection case peace note pipeline isolation valve and described voltage stabilizer peace note pipeline isolation valve, close described release pipeline isolation valve simultaneously, and open described elevated pressure nitrogen gas tank isolation valve, cooling medium then in described nitrogen pressurizer and described high-pressure safety injection case under gravity by described voltage stabilizer peace note pipeline, described high-pressure safety injection case peace note pipeline through injection manifold piii reactor pressure vessel, maintain core deluge, prevent Core uncovering from causing reactor core to damage.
Preferably, described system also comprises release case pressure-release valve, and it is arranged on the release case release pipeline that is connected with described release case safety valve; When reactor coolant loop needs step-down, described release pipeline isolation valve can be opened and described release case pressure-release valve carries out release.
Preferably, as shown in Figure 1, described system also comprise be arranged on nitrogen return line non-return valve between nitrogen return line and air compressor machine, the high-pressure safety injection case be arranged between high-pressure safety injection case peace note pipeline isolation valve and injection manifold pacifies and notes pipeline non-return valve; And the voltage stabilizer be arranged between voltage stabilizer peace note pipeline isolation valve and injection manifold is pacified and is noted pipeline non-return valve.
Preferably, the nitrogen stabilization pressure of described nuclear power station and High-pressure injection system can form safety injection system jointly with the safety injection system of other pattern.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention is different with High-pressure injection system from the voltage-stabilizing system in traditional core power station, nitrogen pressurizer and high-pressure safety injection case are combined by balance pipe, realize non-active high-pressure safety injection, than traditional voltage stabilizing and High-pressure injection system, there is more simple and reliable advantage.
2. be provided with voltage stabilizer peace note pipeline and high-voltaghe compartment peace note pipeline, during for there is the accidents such as dehydration when reactor coolant loop, pipeline is noted to reactor pressure vessel water filling by the peace note pipeline bottom voltage stabilizer and high-pressure safety injection case peace, maintain core deluge, prevent that core temperature is too high to cause damage.
3. be provided with elevated pressure nitrogen gas tank, when system pressure reduction exceeds voltage stabilizer self-regulation scope, supplement nitrogen by elevated pressure nitrogen gas tank to voltage stabilizer, make pressure recover normal operating value.
4. be provided with release case, when system pressure rising exceeds voltage stabilizer self-regulation scope, by release case discharge nitrogen, make pressure recover normal operating value; Release case is also as the device storing nitrogen during system unload.
5. be provided with air compressor machine between elevated pressure nitrogen gas tank and release case, can be used for returning elevated pressure nitrogen gas tank by after the nitrogen pressurization in release case.
Accompanying drawing explanation
Fig. 1 is a kind of nitrogen stabilization pressure and High-pressure injection system general flow chart of nuclear power station.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.In order to understand the present invention more clearly, normally run for nuclear power station below and loss of-coolant accident (LOCA) occurs, composition graphs 1 is described further the nitrogen stabilization pressure of nuclear power station of the present invention and High-pressure injection system.
As shown in Figure 1, nitrogen stabilization pressure and the High-pressure injection system of nuclear power station comprise: nitrogen pressurizer 4, are connected with reactor pressure vessel 1 by Surge line piping 3, and its pucker & bloat by nitrogen in nitrogen pressurizer 4 alleviates the pressure of reactor coolant loop; High-pressure safety injection case 23, is connected with reactor pressure vessel 1 by high-pressure safety injection case peace note pipeline 24; Balance pipe 7, is connected nitrogen pressurizer 4 with high-pressure safety injection case 23 to realize non-active high-pressure safety injection; Nitrogen pressurizer 4 and high-pressure safety injection case 23 are combined by balance pipe 7, non-active high-pressure safety injection can be realized, than traditional voltage stabilizing and High-pressure injection system, there is more simple and reliable advantage.
Preferably, as shown in Figure 1, voltage stabilizer peace note pipeline 27 bottom nitrogen pressurizer 4, is also provided with, when reactor coolant loop generation loss of-coolant accident (LOCA), by voltage stabilizer peace note pipeline 27 to reactor pressure vessel 1 water filling.When reactor coolant loop normally runs, as shown in Figure 1, by the high-pressure safety injection function of high-pressure safety injection case peace note pipeline isolation valve 25 isolated high-voltage peace note case 23 to reactor pressure vessel 1, and isolate the peace pouring functions of nitrogen pressurizer 4 to reactor pressure vessel 1 by voltage stabilizer peace note pipeline isolation valve 28.
Preferably, as shown in Figure 1, elevated pressure nitrogen gas tank 12, be connected with nitrogen pressurizer 4 through balance pipe 7 by elevated pressure nitrogen gas tank gas supply line 8, when the reduction of reactor coolant loop pressure exceeds voltage stabilizer 4 self-regulation scope, supplement nitrogen by elevated pressure nitrogen gas tank 23 to nitrogen pressurizer 4, make pressure recover normal operating value; Release case 16, is connected with nitrogen pressurizer through balance pipe 7 by release pipeline 22, when the rising of reactor coolant loop pressure exceeds nitrogen pressurizer 4 self-regulation scope, by discharging nitrogen to release case 16, makes pressure recover normal operating value; Air compressor machine 15, is arranged between elevated pressure nitrogen gas tank 12 and release case 16, for returning elevated pressure nitrogen gas tank 12 by after the nitrogen pressurization in release case 16 by nitrogen return line 13.
Preferably, as shown in Figure 1, release case 16 is also as the device storing nitrogen during described system unload.
Preferably, as shown in Figure 1, nitrogen stabilization pressure and the High-pressure injection system of described nuclear power station also comprise: pressurizer safety valve 6, and it is arranged on the pressurizer safety valve release pipeline 5 that is connected with nitrogen pressurizer 4, for performing overpressure protection function; Elevated pressure nitrogen gas tank safety valve 11, it is arranged on the elevated pressure nitrogen gas tank safety valve release pipeline 10 that is connected with elevated pressure nitrogen gas tank 12, for performing overpressure protection function; And release case safety valve 18, it is arranged on the release case safety valve release pipeline 17 that is connected with release case 16, for performing overpressure protection function.
Preferably, as shown in Figure 1, described system also comprises: elevated pressure nitrogen gas tank isolation valve 9, and it is arranged on the elevated pressure nitrogen gas tank gas supply line 8 that is connected with elevated pressure nitrogen gas tank 12; And release pipeline isolation valve 21, it is arranged on the release pipeline 22 that is connected with release case 16; When reactor coolant loop pressure is in steady state (SS), or by the expansion of nitrogen in nitrogen pressurizer 4 and shrinking can maintain pressure within fluctuation range time, elevated pressure nitrogen gas tank isolation valve 9 and release pipeline isolation valve 21 are in closed condition; When reactor coolant loop pressure is higher than nitrogen pressurizer 4 range of adjustment, release pipeline isolation valve 21 is opened, to release case 16 release, until system pressure reduces to allowed band; When reactor coolant loop pressure is lower than nitrogen pressurizer 4 range of adjustment, elevated pressure nitrogen gas tank isolation valve 9 is opened, and injects high pressure nitrogen to nitrogen pressurizer 4.
Preferably, when in elevated pressure nitrogen gas tank 12, nitrogen pressure drops to certain value, open air compressor machine 15, elevated pressure nitrogen gas tank 12 is injected by after the nitrogen pressurization in release case 16, when in elevated pressure nitrogen gas tank 12, nitrogen pressure is elevated to certain value, close air compressor machine 15, thus ensure the gas supply capacity of elevated pressure nitrogen gas tank 12, and the reception nitrogen ability of release case 16.
Preferably, when reactor coolant loop generation loss of-coolant accident (LOCA), open high-pressure safety injection case peace note pipeline isolation valve 25 and voltage stabilizer peace note pipeline isolation valve 28, close release pipeline isolation valve 21 simultaneously, and open elevated pressure nitrogen gas tank isolation valve 9, cooling medium then in nitrogen pressurizer 4 and high-pressure safety injection case 23 under gravity by voltage stabilizer peace note pipeline 27, high-pressure safety injection case peace note pipeline 24 through injection manifold 30 piii reactor pressure vessel 1, maintain core deluge, prevent Core uncovering from causing reactor core to damage.
Preferably, as shown in Figure 1, described system also comprises release case pressure-release valve 19, and it is arranged on the release case release pipeline 20 that is connected with release case safety valve 18; When reactor coolant loop needs further step-down, release pipeline isolation valve 21 can be opened and release case pressure-release valve 19 carries out release.
Preferably, as shown in Figure 1, described system also comprises and is arranged on nitrogen return line non-return valve 14 between nitrogen return line 13 and air compressor machine 15, is arranged on high-pressure safety injection case and pacifies the high-pressure safety injection case noted between pipeline isolation valve 25 and injection manifold 30 and pacify and note pipeline non-return valve 26; And the voltage stabilizer be arranged between voltage stabilizer peace note pipeline isolation valve 28 and injection manifold 30 is pacified and is noted pipeline non-return valve 29.
Preferably, the nitrogen stabilization pressure of described nuclear power station and High-pressure injection system, can form safety injection system jointly with the safety injection system of other pattern.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention is different with High-pressure injection system from the voltage-stabilizing system in traditional core power station, nitrogen pressurizer and high-pressure safety injection case are combined by balance pipe, realize non-active high-pressure safety injection, than traditional voltage stabilizing and High-pressure injection system, there is more simple and reliable advantage.
2. be provided with voltage stabilizer peace note pipeline and high-voltaghe compartment peace note pipeline, during for there is the accidents such as dehydration when reactor coolant loop, pipeline is noted to reactor pressure vessel water filling by the peace note pipeline bottom voltage stabilizer and high-pressure safety injection case peace, maintain core deluge, prevent that core temperature is too high to cause damage.
3. be provided with elevated pressure nitrogen gas tank, when system pressure reduction exceeds voltage stabilizer self-regulation scope, supplement nitrogen by elevated pressure nitrogen gas tank to voltage stabilizer, make pressure recover normal operating value.
4. be provided with release case, when system pressure rising exceeds voltage stabilizer self-regulation scope, by release case discharge nitrogen, make pressure recover normal operating value; Release case is also as the device storing nitrogen during system unload.
5. be provided with air compressor machine between elevated pressure nitrogen gas tank and release case, can be used for returning elevated pressure nitrogen gas tank by after the nitrogen pressurization in release case.
Described system, when reactor coolant loop normally runs, by expansion and the contraction of nitrogen in voltage stabilizer, and completes pressure adjustment in conjunction with elevated pressure nitrogen gas tank and release case.When there is the accidents such as dehydration when reactor coolant loop, by the peace note pipeline bottom voltage stabilizer and high-pressure safety injection case to reactor pressure vessel water filling, maintain core deluge, prevent that core temperature is too high to cause damage.Said process utilizes nitrogen pressurizer and high-pressure safety injection case, has both realized steady pressure of system function, has non-active peace pouring functions simultaneously, prevents core temperature too high, thus prevent or reduce the infringement of reactor core, have good feasibility and reliability.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For system disclosed in embodiment, owing to corresponding to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Those skilled in the art can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.
Obviously, those skilled in the art can carry out various change and modification to invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. the nitrogen stabilization pressure of nuclear power station and a High-pressure injection system, it is characterized in that, described system comprises:
Nitrogen pressurizer, is connected with reactor pressure vessel by Surge line piping, and its pucker & bloat by nitrogen in nitrogen pressurizer alleviates the pressure of reactor coolant loop;
High-pressure safety injection case, is connected with reactor pressure vessel by high-pressure safety injection case peace note pipeline;
Balance pipe, is connected to realize non-active high-pressure safety injection with described high-pressure safety injection case by described nitrogen pressurizer.
2. the nitrogen stabilization pressure of nuclear power station as claimed in claim 1 and High-pressure injection system, it is characterized in that, voltage stabilizer peace note pipeline is provided with bottom described nitrogen pressurizer, when reactor coolant loop generation loss of-coolant accident (LOCA), by described voltage stabilizer peace note pipeline to described reactor pressure vessel water filling;
When reactor coolant loop normally runs, isolate the high-pressure safety injection function of described high-pressure safety injection case to described reactor pressure vessel by high-pressure safety injection case peace note pipeline isolation valve, and isolate the peace pouring functions of described nitrogen pressurizer to described reactor pressure vessel by voltage stabilizer peace note pipeline isolation valve.
3. the nitrogen stabilization pressure of nuclear power station as claimed in claim 1 and High-pressure injection system, it is characterized in that, described system also comprises:
Elevated pressure nitrogen gas tank, be connected with nitrogen pressurizer through described balance pipe by elevated pressure nitrogen gas tank gas supply line, when the reduction of reactor coolant loop pressure exceeds voltage stabilizer self-regulation scope, supplement nitrogen by described elevated pressure nitrogen gas tank to described nitrogen pressurizer, make pressure recover normal operating value;
Release case, is connected with described nitrogen pressurizer through described balance pipe by release pipeline, when the rising of reactor coolant loop pressure exceeds described nitrogen pressurizer self-regulation scope, by release case discharge nitrogen, makes pressure recover normal operating value;
Air compressor machine, is arranged between elevated pressure nitrogen gas tank and release case, for returning elevated pressure nitrogen gas tank by after the nitrogen pressurization in release case by nitrogen return line.
4. the nitrogen stabilization pressure of nuclear power station as claimed in claim 3 and High-pressure injection system, it is characterized in that, described release case is also as the device storing nitrogen during reactor coolant loop release.
5. the nitrogen stabilization pressure of nuclear power station as claimed in claim 3 and High-pressure injection system, is characterized in that, also comprise:
Pressurizer safety valve, it is arranged on the pressurizer safety valve release pipeline that is connected with described nitrogen pressurizer, for performing overpressure protection function;
Elevated pressure nitrogen gas tank safety valve, it is arranged on the elevated pressure nitrogen gas tank safety valve release pipeline that is connected with described elevated pressure nitrogen gas tank, for performing overpressure protection function;
And release case safety valve, it is arranged on the release case safety valve release pipeline that is connected with described release case, for performing overpressure protection function.
6. the nitrogen stabilization pressure of nuclear power station as claimed in claim 5 and High-pressure injection system, it is characterized in that, described system also comprises:
Elevated pressure nitrogen gas tank isolation valve, it is arranged on the elevated pressure nitrogen gas tank gas supply line that is connected with described elevated pressure nitrogen gas tank;
And release pipeline isolation valve, it is arranged on the release pipeline that is connected with described release case;
When reactor coolant loop pressure is in steady state (SS), described elevated pressure nitrogen gas tank isolation valve and described release pipeline isolation valve are in closed condition;
When reactor coolant loop pressure is higher than described nitrogen pressurizer range of adjustment, described release pipeline isolation valve is opened, to the release of described release case;
When reactor coolant loop pressure is lower than described nitrogen pressurizer range of adjustment, described elevated pressure nitrogen gas tank isolation valve is opened, and injects high pressure nitrogen to described nitrogen pressurizer.
7. the nitrogen stabilization pressure of nuclear power station as claimed in claim 3 and High-pressure injection system, it is characterized in that, when in described elevated pressure nitrogen gas tank, nitrogen pressure drops to certain value, open described air compressor machine, inject described elevated pressure nitrogen gas tank by after the nitrogen pressurization in described release case, when nitrogen pressure is elevated to certain value in described elevated pressure nitrogen gas tank, close described air compressor machine, thus ensure the gas supply capacity of described elevated pressure nitrogen gas tank, and the reception nitrogen ability of described release case.
8. the nitrogen stabilization pressure of nuclear power station as claimed in claim 6 and High-pressure injection system, it is characterized in that, when reactor coolant loop generation loss of-coolant accident (LOCA), open described high-pressure safety injection case peace note pipeline isolation valve and described voltage stabilizer peace note pipeline isolation valve, close described release pipeline isolation valve simultaneously, and open described elevated pressure nitrogen gas tank isolation valve, cooling medium then in described nitrogen pressurizer and described high-pressure safety injection case is under gravity by described voltage stabilizer peace note pipeline, described high-pressure safety injection case peace note pipeline is through injection manifold piii reactor pressure vessel, maintain core deluge, prevent Core uncovering from causing reactor core to damage.
9. the nitrogen stabilization pressure of nuclear power station as claimed in claim 6 and High-pressure injection system, it is characterized in that, described system also comprises release case pressure-release valve, and it is arranged on the release case release pipeline that is connected with described release case safety valve; When reactor coolant loop needs step-down, described release pipeline isolation valve can be opened and described release case pressure-release valve carries out release.
10. the nitrogen stabilization pressure of nuclear power station as claimed in claim 1 and High-pressure injection system, is characterized in that, jointly can form safety injection system with the safety injection system of other pattern.
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| CN201610003797.XA CN105489257A (en) | 2016-01-04 | 2016-01-04 | Nitrogen pressure stabilization and high-pressure safety injection system for nuclear power plant |
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| CN201610003797.XA CN105489257A (en) | 2016-01-04 | 2016-01-04 | Nitrogen pressure stabilization and high-pressure safety injection system for nuclear power plant |
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| CN106652726A (en) * | 2017-01-16 | 2017-05-10 | 中国核动力研究设计院 | Nitrogen pressure stabilizing experiment device with controllable outlet fluid temperature in moving condition |
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| CN113432901A (en) * | 2021-06-24 | 2021-09-24 | 中国舰船研究设计中心 | Containment suppression heat extraction test system |
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| CN109300556A (en) * | 2018-09-19 | 2019-02-01 | 中广核研究院有限公司 | A kind of reactor voltage-stabilizing system having peace pouring functions |
| CN109300556B (en) * | 2018-09-19 | 2024-06-18 | 中广核研究院有限公司 | Reactor steady voltage system with safety notes function |
| CN113432901A (en) * | 2021-06-24 | 2021-09-24 | 中国舰船研究设计中心 | Containment suppression heat extraction test system |
| CN113823428A (en) * | 2021-10-15 | 2021-12-21 | 上海核工程研究设计院有限公司 | Novel safe operation system of nuclear power station and operation method thereof |
| CN114060784A (en) * | 2021-12-13 | 2022-02-18 | 中国核动力研究设计院 | Water supply system applied to direct-current steam generation device |
| CN114999693A (en) * | 2022-06-01 | 2022-09-02 | 中国核动力研究设计院 | Pressure relief protection system for preventing non-condensable gas from entering reactor core of compressed gas pressure stabilizing reactor |
| CN114999693B (en) * | 2022-06-01 | 2024-05-28 | 中国核动力研究设计院 | Pressure relief protection system for preventing noncondensable gas from entering reactor core of compressed gas stabilized pressure reactor |
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