CN205428503U - Stabiliser spraying system for small -size PWR of integration - Google Patents
Stabiliser spraying system for small -size PWR of integration Download PDFInfo
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- CN205428503U CN205428503U CN201520878082.XU CN201520878082U CN205428503U CN 205428503 U CN205428503 U CN 205428503U CN 201520878082 U CN201520878082 U CN 201520878082U CN 205428503 U CN205428503 U CN 205428503U
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- valve
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- manostat
- stabiliser
- pipeline
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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
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Abstract
The utility model belongs to the pressurised water nuclear power technique specifically discloses a stabiliser spraying system for small -size PWR of integration, including coolant outlet and the balanced pipeline between the stabiliser entry of locating undulant pipe between reactor pressure vessel cooling agent entry and the stabiliser export, reactor pressure vessel with locate the valve on the balance pipe line, still include and locate the spraying pump on the balance pipe line, the valve include an electric brake valve and the spraying governing valve, the pipeline of spraying pump top install an electric brake valve and spraying governing valve, the mist spraying pipeline and stabiliser entry linkage that connect in proper order on the spraying governing valve. Entire system can provide the required flow of stabiliser spraying and the system of pressure head, guarantees through a stabiliser spraying and electric heater control return circuit pressure, to make it not reach the setting value that first safe valves was opened when transient states such as reactor experience variation in load and temperature fluctuations.
Description
Technical field
This utility model belongs to compressed water reactor nuclear power technology, is specifically related to manostat spraying system and the method utilizing this system to control pressure.
Background technology
In nuclear power plant's properly functioning period, manostat plays absorption primary Ioops coolant water cubical expansion and contraction, manostat gas-liquid two-phase balance is with the effect of stable primary Ioops pressure, especially during opening heap shutdown, due to primary Ioops temperature fluctuation, causing primary Ioops reactor coolant to expand or shrink, primary Ioops pressure changes the most therewith simultaneously.The control to primary Ioops pressure is realized with electric heater by manostat spraying.
If integral reactor uses built-in shielding main pump, pump lift is not enough, the reactor coolant of core exit needs to be delivered to manostat upper cover, if main pump lift is not enough to provide the pressure head needed for manostat spraying, then its atomisation pressure and flow cannot meet integral reactor engine request.
Summary of the invention
The purpose of this utility model is to provide a kind of manostat spraying system and compress control method thereof, it is possible to main pump lift is increased, it is sufficient to provides manostat spraying pressure head, meets the integral reactor control requirement to primary Ioops pressure.
The technical solution of the utility model is as follows:
A kind of manostat spraying system being applied to integrated small presurized water reactor, including balancing pipeline and being located at the valve balanced on pipeline between Surge line piping, the coolant outlet of reactor pressure vessel and the manostat entrance being located between reactor pressure vessel coolant entrance and manostat outlet, also include the atomizing pump being located on balance pipeline；Described valve includes the first electric gate valve and spraying regulation valve；The described pipeline above atomizing pump installs the first electric gate valve and spraying regulation valve successively, and the spray pipe that spraying regulation valve connects is connected with manostat entrance.
In above-mentioned a kind of manostat spraying system being applied to integrated small presurized water reactor: described valve also includes the second electric gate valve, electromagnetic valve and the first needle valve, three's being located in the atomizing pump return duct in parallel with atomizing pump from bottom to top.
In above-mentioned a kind of manostat spraying system being applied to integrated small presurized water reactor: described valve also includes the second needle valve, it is connected in parallel on described first electric gate valve and the two ends of line segments of described spraying regulation valve composition.
In above-mentioned a kind of manostat spraying system being applied to integrated small presurized water reactor: described atomizing pump is electric centrifugal pump.
In above-mentioned a kind of manostat spraying system being applied to integrated small presurized water reactor: described spraying regulation valve is pneumatic control valve.
The beneficial effects of the utility model are: arrange atomizing pump (electric centrifugal pump), power plant's run duration keeps running continuously, flow and the pressure head of manostat spraying necessary requirement are provided, atomizing pump return line are set, return line arranges electromagnetic valve, when need not spraying, it is held open, makes to return main system, during spraying signal enabling through the coolant of atomizing pump, closed electromagnetic valve, to reach mist flow.There is provided the flow required for manostat spraying and the system of pressure head, it is ensured that when the reactor experience transient state such as load variations and temperature fluctuation, control primary Ioops pressure by manostat spraying and electric heater so that it is be not up to the setting valve that first relief valve group is opened.
Accompanying drawing explanation
Fig. 1 is manostat spraying system schematic diagram；
In figure: 1. reactor pressure vessel；2. coolant entrance；3. coolant outlet；4. manostat；5. balance pipeline；6. Surge line piping；7. atomizing pump；8. the first electric gate valve；9. spraying regulation valve；10. the second electric gate valve；11. electromagnetic valves；12. first needle valvies；13. second needle valvies.
Detailed description of the invention
Below in conjunction with the accompanying drawings and this utility model is described in further detail by specific embodiment.
As it is shown in figure 1, in manostat spraying system, connect Surge line piping 6 from the coolant entrance 2 of reactor pressure vessel 1, and the coolant outlet 3 of reactor pressure vessel 1 connects balance pipeline 5.Installing atomizing pump 7 on balance pipeline 5, the pipeline above atomizing pump 7 installs the first electric gate valve 8 and spraying regulation valve 9 successively.The spray pipe connected on spraying regulation valve 9 extend in manostat 4, and the outlet below manostat 4 connects above-mentioned Surge line piping 6.
In order to control pressure so that atomisation pressure and the flow of atomizing pump 7 meet requirement.At the two ends of atomizing pump 7, a road pipeline in parallel is as atomizing pump return duct, and this pipeline is sequentially connected with the second electric gate valve 10, electromagnetic valve 11 and the first needle valve 12 from bottom to top.In the first above-mentioned electric gate valve 8 and two ends second needle valve 13 in parallel of the line segments of spraying regulation valve 9 composition.
Above-mentioned atomizing pump 7 is electric centrifugal pump, keeps running continuously at power plant's run duration, it is provided that the flow of manostat spraying necessary requirement and pressure head.
Spraying regulation valve 9 is pneumatic control valve, and its aperture changes with the pressure signal of manostat 4, to control mist flow.
When need not spraying, keeping electromagnetic valve 11 to open, making to return main system through the coolant of atomizing pump 7, during spraying signal enabling, electromagnetic valve 11 cuts out, to reach mist flow.
The first electric gate valve arranged on spraying pipeline, nominal situation maintains a normally open, and closes during atomizing pump 7 fault.The second electric gate valve 10 arranged on atomizing pump 7 return line, nominal situation maintains a normally open, and closes during atomizing pump 7 fault.
Spraying regulation upper the second needle valve 13 arranged of valve 9 bypass, in the case of spraying regulation valve 9 contract fully, maintains continuous mist flow.
The first needle valve 12 arranged in atomizing pump 7 return duct, limits the return flow of atomizing pump 7.
Manostat spraying system runs and is divided into spraying continuously and two kinds of operating modes of normal spraying.
Spraying continuously:
Power plant's properly functioning period, manostat is sprayed continuously.Reactor coolant enters atomizing pump 2 through spraying pipeline 1, and the coolant of atomizing pump 2 outlet is divided into two parts.Overwhelming majority flow therein is by spraying bypass regulator valve 5, and through electromagnetic valve 4, isolating valve 3 returns atomizing pump 2 suction inlet；Another fraction flow is through continuous spray valve 6, and in shower nozzle 8 sprays into the vapour chamber of manostat 9, within now manostat pressure is in normal range, spray valve 7 is closed, and the fluctuating flow rate in manostat 9 returns reactor pressure vessel through Surge line piping 10.
Spraying:
Power plant's run duration, when manostat pressure is higher, sprays.Reactor coolant enters atomizing pump 2 through spraying pipeline 1, when manostat pressure is higher than normal pressure 0.17MPa, automatically controls electromagnetic valve 4 quick closedown, isolates atomizing pump bypass branch；Meanwhile, pressure signal controls spray valve 7 and opens, and according to the aperture of manostat pressure control valve, when manostat pressure is higher than normal pressure 0.52MPa, standard-sized sheet spray valve 7.Whole flows of the coolant of atomizing pump 2 outlet are through isolating valve 3, continuous spray valve 6 on spray valve 7 and parallel branch, in shower nozzle 8 sprays into the vapour chamber of manostat 9, spray valve 7 controls to enter the mist flow of manostat, and the fluctuating flow rate in manostat 9 returns reactor pressure vessel through Surge line piping 10.
Claims (5)
1. the manostat spraying system being applied to integrated small presurized water reactor, including the Surge line piping (6) being located between reactor pressure vessel (1) coolant entrance (2) and manostat outlet, reactor pressure vessel (1) coolant outlet (3) and manostat entrance between balance pipeline (5) and the valve be located in balance pipeline (5), it is characterised in that: also include being located at the atomizing pump (7) balanced on pipeline 5；Described valve includes the first electric gate valve (8) and spraying regulation valve (9)；The pipeline of described atomizing pump (7) top installs the first electric gate valve (8) and spraying regulation valve (9) successively, and the upper spray pipe connected of spraying regulation valve (9) is connected with manostat (4) entrance.
A kind of manostat spraying system being applied to integrated small presurized water reactor, it is characterized in that: described valve also includes the second electric gate valve (10), electromagnetic valve (11) and the first needle valve (12), three's being located in the atomizing pump return duct in parallel with atomizing pump (7) from bottom to top.
A kind of manostat spraying system being applied to integrated small presurized water reactor, it is characterized in that: described valve also includes the second needle valve (13), it is connected in parallel on described first electric gate valve (8) and described spraying regulates the two ends of the line segments that valve (9) forms.
4. a kind of manostat spraying system being applied to integrated small presurized water reactor as described in claims 1 to 3 any one, it is characterised in that: described atomizing pump (7) is electric centrifugal pump.
5. a kind of manostat spraying system being applied to integrated small presurized water reactor as described in claims 1 to 3 any one, it is characterised in that: described spraying regulation valve (9) is pneumatic control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520878082.XU CN205428503U (en) | 2015-11-05 | 2015-11-05 | Stabiliser spraying system for small -size PWR of integration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520878082.XU CN205428503U (en) | 2015-11-05 | 2015-11-05 | Stabiliser spraying system for small -size PWR of integration |
Publications (1)
| Publication Number | Publication Date |
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| CN205428503U true CN205428503U (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520878082.XU Active CN205428503U (en) | 2015-11-05 | 2015-11-05 | Stabiliser spraying system for small -size PWR of integration |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584103A (en) * | 2020-04-24 | 2020-08-25 | 岭东核电有限公司 | Continuous spraying adjusting method for voltage stabilizer of nuclear power station |
| CN113299417A (en) * | 2021-05-25 | 2021-08-24 | 中国核动力研究设计院 | Safety injection triggering method, device and system for nuclear power plant under shutdown condition during operation of main pump |
| CN113421667A (en) * | 2021-05-10 | 2021-09-21 | 中广核研究院有限公司 | Reactor primary loop spraying system |
| 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 |
-
2015
- 2015-11-05 CN CN201520878082.XU patent/CN205428503U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111584103A (en) * | 2020-04-24 | 2020-08-25 | 岭东核电有限公司 | Continuous spraying adjusting method for voltage stabilizer of nuclear power station |
| CN111584103B (en) * | 2020-04-24 | 2022-04-29 | 岭东核电有限公司 | Continuous spraying adjusting method for voltage stabilizer of nuclear power station |
| CN113421667A (en) * | 2021-05-10 | 2021-09-21 | 中广核研究院有限公司 | Reactor primary loop spraying system |
| CN113299417A (en) * | 2021-05-25 | 2021-08-24 | 中国核动力研究设计院 | Safety injection triggering method, device and system for nuclear power plant under shutdown condition during operation of main pump |
| 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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