CN104832463A - Ejector system for vacuumizing pressurized water reactor cooling agent system - Google Patents
Ejector system for vacuumizing pressurized water reactor cooling agent system Download PDFInfo
- Publication number
- CN104832463A CN104832463A CN201510019240.0A CN201510019240A CN104832463A CN 104832463 A CN104832463 A CN 104832463A CN 201510019240 A CN201510019240 A CN 201510019240A CN 104832463 A CN104832463 A CN 104832463A
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- CN
- China
- Prior art keywords
- pressurized water
- water reactor
- spargers
- reactor coolant
- pipeline
- Prior art date
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/14—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid
- F04F5/16—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids
- F04F5/20—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating
- F04F5/22—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow the inducing fluid being elastic fluid displacing elastic fluids for evacuating of multi-stage type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
- F04F5/00—Jet pumps, i.e. devices in which flow is induced by pressure drop caused by velocity of another fluid flow
- F04F5/44—Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02 - F04F5/42
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Jet Pumps And Other Pumps (AREA)
Abstract
The present provides an ejector system for vacuumizing a pressurized water reactor cooling agent system. The ejector system comprises three ejectors; the three ejectors are peripherally arranged in parallel at an angle of 120 degrees; a gas inlet pipeline is connected with a distribution chamber; an outlet of the distribution chamber is respectively connected with inlets of the three ejectors; gas is uniformly distributed in the distribution chamber and respectively enters the three ejectors; a suction inlet pipeline is divided into three paths after passing through one main pipe and the three paths of pipelines respectively enter suction chambers of three ejectors; the three paths of pipelines are peripherally arranged at an angle of 120 degrees; a check valve and a vacuum breaking pipeline are arranged on the main pipe of the suction inlet pipeline; and an exhaust pipeline is divided into three paths after passing through one main pipe and the three paths of pipelines are respectively connected with outlets of three ejectors. The system provided by the present invention not only has the advantages of small size, compact structure and the like, but also ensures integral performance of the ejectors after the ejectors are connected in parallel. The system can vacuumize a volume of about 300 cubic meters into 0.01MPa from 0.1MPa in 120 minutes. The requirements on vacuumizing a CAP reactor cooling agent system can be met.
Description
Technical field
The present invention relates to nuclear power plant reactor coolant system, be specifically related to a kind of ejector system vacuumized for 1,400,000 kilowatts of advanced passive PWR nuclear power station (CAP1400) reactor coolant loops.
Background technique
In conventional pressurized water heap nuclear power plant start-up course, main pump point flowing mode is adopted dynamically to catch up with gas to reactor coolant loop.Which requires higher to main pump, and catches up with gas effect undesirable.
1400000 kilowatts of advanced passive PWR nuclear power station (being called for short CAP1400), pressurized water reactor coolant system starts employing vacuum water-filling mode, the air being gathered in steam generator heat-transfer pipe top utilizing which can discharge traditional approach not easily to drive out of, reduces the possibility of reactor coolant pump cavitation erosion.At present, three nuclear power projects first stage of the project and Haiyang nuclear power projects first stage of the project adopt the AP1000 nuclear power generating sets of Westinghouse Electric's design, clear and definite requirement is proposed to pumped vacuum systems, namely the pressure of reactor coolant loop can be evacuated to 0.01MPa (a) from 0.1MPa (a) in 2 hours.
For CAP1400, the headroom volume that needs vacuumize is much larger than the volume of AP1000, and pumped vacuum systems requires about 300m in 120 minutes
3volume be evacuated to 0.01MPa (a) from 0.1MPa (a).Simultaneously due to the limiting factor of arrangement space, the design of pumped vacuum systems is had higher requirement.
Summary of the invention
The object of the present invention is to provide a kind of ejector system that can meet CAP1400 pressurized water reactor coolant system and vacuumize.
Realize the technological scheme of the object of the invention: a kind of ejector system vacuumized for pressurized water reactor coolant system, it comprises 3 spargers, and 3 spargers are circumferentially arranged in parallel in 120 degree; Suction port pipeline connects distributor chamber, and the outlet of distributor chamber connects the entrance of 3 spargers respectively; Gas uniform distribution in distributor chamber enters in 3 spargers respectively; Suction port pipeline enters the suction chamber of 3 spargers respectively through house steward Hou Fen tri-tunnel, and 3 road pipelines circumferentially in 120 degree of layouts, make air inlet uniformity distribute; The house steward of suction port pipeline arranges 1 safety check and vacuum breaking pipeline; Exhaust line connects the outlet of 3 spargers respectively through house steward Hou Fen tri-tunnel, stablizes back pressure with the interruption-forming that goes out at sparger.
As above for the ejector system that pressurized water reactor coolant system vacuumizes, 3 spargers described in it all adopt pressurized air to be power source.
As above for the ejector system that pressurized water reactor coolant system vacuumizes, the suction chamber of each sparger described in it arranges a pressure instrument.
As above for the ejector system that pressurized water reactor coolant system vacuumizes, the vacuum breaking pipeline described in it arranges stop valve two.
As above for the ejector system that pressurized water reactor coolant system vacuumizes, the suction port pipeline described in it arranges suction port stop valve.
As above for the ejector system that pressurized water reactor coolant system vacuumizes, the suction port pipeline installing pressure instrument three described in it.
As above for the ejector system that pressurized water reactor coolant system vacuumizes, the exhaust line described in it is arranged stop valve three.
Effect of the present invention is: a kind of ejector system vacuumized for pressurized water reactor coolant system of the present invention, for the vacuum pumping of system in CAP1400 passive PWR nuclear power plant reactor coolant loop start-up course.The core of this system is sparger, and employing pressurized air is power source, has non-energy dynamic response and simplification.This system adopts three grades of injector parallel connection schemes, design is optimized to suction port pipeline, suction port pipeline, increase uniformity and the flow stability of fluid distribution, not only there is the advantages such as size is little, compact structure, and ensure that the overall performance after injector parallel connection.The volume of about 300 cubic metres can be evacuated to 0.01MPa from 0.1MPa by this system in 120 minutes, can meet the requirement that CAP1400 reactor coolant loop vacuumizes.
Accompanying drawing explanation
Fig. 1 is a kind of ejector system schematic diagram vacuumized for pressurized water reactor coolant system of the present invention;
Fig. 2 is the A-A left view of Fig. 1;
Fig. 3 is the A-A right elevation of Fig. 1;
Fig. 4 is the B-B right elevation of Fig. 1;
In figure: 1. suction port pipeline; 2. suction port stop valve; 3. distributor chamber; 4. pressure instrument one; 5. sparger one; 6. suction port pipeline; 7. safety check; 8. stop valve one; 9. vacuum breaking pipeline; 10. stop valve two; 11. exhaust lines; 12. stop valves three; 13. spargers two; 14. pressure instruments two; 15. pressure instruments three.
Embodiment
Below in conjunction with the drawings and specific embodiments, a kind of ejector system vacuumized for pressurized water reactor coolant system of the present invention is further described.
As shown in Figures 1 to 4, a kind of ejector system vacuumized for pressurized water reactor coolant system of the present invention, it comprises 3 spargers (in Fig. 1 visible sparger 1, sparger 2 13), and 3 spargers are circumferentially arranged in parallel in 120 degree; 3 spargers all adopt pressurized air to be power source.The suction chamber of each sparger arranges a pressure instrument, for monitoring the performance (in Fig. 1 the visible pressure instrument 1 of sparger 1, the pressure instrument 2 14 of sparger 2 13) of sparger.
Suction port pipeline 1 connects distributor chamber 3, and the outlet of distributor chamber 3 connects the entrance of 3 spargers respectively; Gas uniform distribution in distributor chamber 3 enters in 3 spargers respectively.Suction port pipeline 1 is arranged suction port stop valve 2.
Suction port pipeline 6 enters the suction chamber of 3 spargers respectively through house steward Hou Fen tri-tunnel, and 3 road pipelines circumferentially in 120 degree of layouts, make air inlet uniformity distribute; The house steward of suction port pipeline 6 arranges 1 safety check 7 and vacuum breaking pipeline 9.Safety check 7, when vacuum is higher, reduces valve resistance to the impact of pumping performance.Vacuum breaking pipeline 9, when needs destroy system vacuum, can pass through this pipeline air inlet.Suction port pipeline 6 is arranged pressure instrument 3 15.Vacuum breaking pipeline 9 is arranged stop valve 2 10.
Exhaust line 11 connects the outlet of 3 spargers respectively through house steward Hou Fen tri-tunnel, stablizes back pressure with the interruption-forming that goes out at sparger.Described exhaust line 11 arranges stop valve 3 12.
Ejector system of the present invention, core is 3 spargers, and employing pressurized air is power source, has non-energy dynamic response and simplification.Arranging distributor chamber 3 makes the suction port of each sparger form stable air inlet.Arranging safety check 7 one is prevent gas backflow, and two is reduce resistance, gas clean-up.The upstream of suction port pipeline 6 is provided with vacuum breaking pipeline 9, when needs destroy system vacuum, can pass through this pipeline air inlet.Vacuumize performance in order to what monitor sparger 5, at the suction chamber of suction port pipeline 6 and each sparger 5, pressure instrument 4 is installed.This system has compact structure and the little advantage of size, and envelope size is within 1.9m (length) × 1.5m (wide) × 0.9m (height) scope.The volume of about 300 cubic metres can be evacuated to 0.01MPa from 0.1MPa by this system in 120 minutes, can meet the requirement that CAP1400 reactor coolant loop vacuumizes.
The installation of ejector system of the present invention and pressurized water reactor coolant system is as follows, and suction port pipeline 1 is connected with pressurized air, and suction port pipeline 6 is connected with reactor coolant loop, and exhaust line 11 runs in air pipeline.During operation, close the stop valve 2 10 that vacuum breaking pipeline 9 is arranged, open the suction port stop valve 2 that the stop valve 1 that suction port pipeline 6 is arranged, the stop valve 3 12 that exhaust line 11 is arranged and suction port pipeline 1 are arranged, pressurized gas enter 3 spargers, after mixing with the low-pressure gas of suction line 6, after sparger mixing chamber and diffuser boosting, enter exhaust line 11.When system vacuum reaches requirement, close suction port stop valve 2 and stop valve 1.When needs destroy system vacuum, open stop valve 2 10.
Claims (7)
1. for the ejector system that pressurized water reactor coolant system vacuumizes, it is characterized in that: this ejecting system comprises 3 spargers, 3 spargers are circumferentially arranged in parallel in 120 degree;
Suction port pipeline (1) connects distributor chamber (3), and the outlet of distributor chamber (3) connects the entrance of 3 spargers respectively; Gas uniform distribution in distributor chamber (3) enters in 3 spargers respectively;
Suction port pipeline (6) enters the suction chamber of 3 spargers respectively through house steward Hou Fen tri-tunnel, and 3 road pipelines circumferentially in 120 degree of layouts, make air inlet uniformity distribute; The house steward of suction port pipeline (6) arranges 1 safety check (7) and vacuum breaking pipeline (9);
Exhaust line (11) connects the outlet of 3 spargers respectively through house steward Hou Fen tri-tunnel, stablizes back pressure with the interruption-forming that goes out at sparger.
2. a kind of ejector system vacuumized for pressurized water reactor coolant system according to claim 1, is characterized in that: 3 described spargers all adopt pressurized air to be power source.
3. a kind of ejector system vacuumized for pressurized water reactor coolant system according to claim 1, is characterized in that: the suction chamber of described each sparger arranges a pressure instrument.
4. a kind of ejector system vacuumized for pressurized water reactor coolant system according to claim 1, is characterized in that: described vacuum breaking pipeline (9) arranges stop valve two (10).
5. a kind of ejector system vacuumized for pressurized water reactor coolant system according to claim 1, is characterized in that: described suction port pipeline (1) arranges suction port stop valve (2).
6. a kind of ejector system vacuumized for pressurized water reactor coolant system according to claim 1, is characterized in that: described suction port pipeline (6) arranges pressure instrument three (15).
7. a kind of ejector system vacuumized for pressurized water reactor coolant system according to claim 1, is characterized in that: described exhaust line (11) arranges stop valve three (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510019240.0A CN104832463A (en) | 2015-01-14 | 2015-01-14 | Ejector system for vacuumizing pressurized water reactor cooling agent system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510019240.0A CN104832463A (en) | 2015-01-14 | 2015-01-14 | Ejector system for vacuumizing pressurized water reactor cooling agent system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104832463A true CN104832463A (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510019240.0A Pending CN104832463A (en) | 2015-01-14 | 2015-01-14 | Ejector system for vacuumizing pressurized water reactor cooling agent system |
Country Status (1)
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| CN (1) | CN104832463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641975A (en) * | 2016-01-14 | 2016-06-08 | 中国核电工程有限公司 | Vacuum degassing system utilizing compressed air as power source |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3061179A (en) * | 1960-11-08 | 1962-10-30 | Vac U Max | Suction creating apparatus |
| JPH0914868A (en) * | 1995-06-23 | 1997-01-17 | Mitsubishi Heavy Ind Ltd | Air extractor |
| CN102003419A (en) * | 2010-10-21 | 2011-04-06 | 重庆智得热工工业有限公司 | Steam ejector composite set |
| CN203348043U (en) * | 2013-05-28 | 2013-12-18 | 宋涛 | Efficient vacuum pumping device special for power plant |
| CN203443393U (en) * | 2013-07-10 | 2014-02-19 | 上海赛迩福电力技术有限公司 | Condenser vacuum system provided with steam ejectors |
| CN203772052U (en) * | 2014-04-11 | 2014-08-13 | 张曙光 | Multistage steam ejector vacuum-pumping system of double backpressure condensers |
| CN204458570U (en) * | 2015-01-14 | 2015-07-08 | 上海核工程研究设计院 | A kind of ejector system vacuumized for pressurized water reactor coolant system |
-
2015
- 2015-01-14 CN CN201510019240.0A patent/CN104832463A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3061179A (en) * | 1960-11-08 | 1962-10-30 | Vac U Max | Suction creating apparatus |
| JPH0914868A (en) * | 1995-06-23 | 1997-01-17 | Mitsubishi Heavy Ind Ltd | Air extractor |
| CN102003419A (en) * | 2010-10-21 | 2011-04-06 | 重庆智得热工工业有限公司 | Steam ejector composite set |
| CN203348043U (en) * | 2013-05-28 | 2013-12-18 | 宋涛 | Efficient vacuum pumping device special for power plant |
| CN203443393U (en) * | 2013-07-10 | 2014-02-19 | 上海赛迩福电力技术有限公司 | Condenser vacuum system provided with steam ejectors |
| CN203772052U (en) * | 2014-04-11 | 2014-08-13 | 张曙光 | Multistage steam ejector vacuum-pumping system of double backpressure condensers |
| CN204458570U (en) * | 2015-01-14 | 2015-07-08 | 上海核工程研究设计院 | A kind of ejector system vacuumized for pressurized water reactor coolant system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105641975A (en) * | 2016-01-14 | 2016-06-08 | 中国核电工程有限公司 | Vacuum degassing system utilizing compressed air as power source |
| CN105641975B (en) * | 2016-01-14 | 2020-07-28 | 中国核电工程有限公司 | Vacuum degassing system using compressed air as power source |
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| PB01 | Publication | ||
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Application publication date: 20150812 |