CN204760045U - Main feed system in two core power stations - Google Patents
Main feed system in two core power stations Download PDFInfo
- Publication number
- CN204760045U CN204760045U CN201520450112.7U CN201520450112U CN204760045U CN 204760045 U CN204760045 U CN 204760045U CN 201520450112 U CN201520450112 U CN 201520450112U CN 204760045 U CN204760045 U CN 204760045U
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- China
- Prior art keywords
- main feed
- feed pump
- main
- subsequent use
- water pipe
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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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- Monitoring And Testing Of Nuclear Reactors (AREA)
Abstract
The utility model relates to a main feed system in two core power stations, including two sets of units, every set of unit still is provided with the main feed pump all including the steam generator who connects gradually, main water -supply line, main feed pump entry pipeline and oxygen -eliminating device on the main feed pump inlet tube line, still be connected with main feed pump entry sharing pipeline on the main feed pump inlet tube line between main feed pump and the oxygen -eliminating device, the main feed pump entry sharing pipeline interconnect of two sets of units, still be connected with main feed pump export sharing pipeline on the main water -supply line between main feed pump and the steam generator, the main feed pump of two sets of units exports sharing pipeline interconnect. The existing system configuration of make full use of is not influencing under the prerequisite of unit function separately, in that the forfeiture is main when feeding water, makes the main feed system of two units have complementary functions to the holding power moves or realizes safe shutdown, in order to prevent the action of depth defense system or ad hoc safety devices, the security that has improved nuclear power generating sets.
Description
Technical field
The utility model relates to nuclear power plant system, particularly relates to the main feed system of a kind of pair of reactor of nuclear power plant.
Background technology
Main feed system is of great significance for the secondary circuit operation tool of nuclear power station, and its major function provides feedwater in different phase to steam generator, to take away the heat of primary Ioops.Main feed system is non-safety-related system, and in existing single reactor of nuclear power plant, when losing main feedwater, the engineered safeguards features mainly through emergency feedwater supply system or other form takes away reactor core heat, to realize normal shutdown.If the existing system configuration of single reactor of nuclear power plant can be made full use of, under the prerequisite not affecting single heap unit function, the main feed system of design a kind of pair of stack operation, the main feed system of two units is had complementary functions, when a certain unit loses main feedwater, another unit can use main feed pump for subsequent use to continue to supply water to the steam generator losing main feedwater, run with holding power or realize safe shutdown, thus prevent depth defense system or engineered safeguards features action, the security of nuclear power generating sets can be made to improve further.
Utility model content
The utility model is exactly that overcome problems of the prior art, the utility model provides the main feed system of a kind of pair of reactor of nuclear power plant to satisfy the demands in order to solve the problem.
To achieve these goals, the technical solution of the utility model is as follows:
The main feed system of a kind of pair of reactor of nuclear power plant, comprise two cover units, the described unit that often overlaps includes the steam generator connected successively, main feed water pipe line, main feed pump source line and oxygen-eliminating device, described main feed pump source line is also provided with main feed pump, it is characterized in that, main feed pump source line between described main feed pump and oxygen-eliminating device is also connected with main feed pump entrance shared pipeline, the main feed pump entrance shared pipeline of two cover units is interconnected, main feed water pipe line between described main feed pump and steam generator is also connected with main feed pump and exports shared pipeline, the main feed pump outlet shared pipeline of two cover units is interconnected, two cover units also comprise the main feed pump discharge pipe for subsequent use connected successively respectively, main feed pump for subsequent use, main feed-water intake pipeline for subsequent use, condensate water pipe and condensate tank, described main feed pump discharge pipe for subsequent use is also connected on main feed pump outlet shared pipeline, described main feed pump source line for subsequent use also connects main feed pump entrance shared pipeline, the junction of described main feed pump outlet shared pipeline and main feed water pipe line and and the junction of main feed pump discharge pipe for subsequent use between be also provided with main feed pump for subsequent use and export isolation valve, the junction of described main feed pump entrance shared pipeline and main feed water pipe line and and the junction of main feed pump source line for subsequent use between be also provided with main feed pump source line isolation valve for subsequent use, described condensate water pipe is also provided with condensate water pipe isolation valve.
The main feed system of above-mentioned a kind of pair of reactor of nuclear power plant, it is characterized in that, main feed pump outlet shared pipeline between described two cover units is provided with main feed pump outlet shared pipeline isolation valve, the main feed pump entrance shared pipeline between described two cover units is provided with main feed pump entrance shared pipeline isolation valve.
The main feed system of above-mentioned a kind of pair of reactor of nuclear power plant, is characterized in that, described main feedwater outlet pipeline for subsequent use is also provided with main feed pump outlet non-return valve for subsequent use.
The main feed system of above-mentioned a kind of pair of reactor of nuclear power plant, it is characterized in that, the main feed water pipe line between the junction of described main feedwater outlet shared pipeline and main feed water pipe line and steam generator is provided with main feed check (valve), main feed water isolating valve and main feed-regulating valve.
The main feed system of above-mentioned a kind of pair of reactor of nuclear power plant, is characterized in that, the main feed water pipe line between the junction of described main feedwater outlet shared pipeline and main feed water pipe line and main feed pump is provided with main feed pump outlet non-return valve.
The beneficial effects of the utility model are: the main feed system of two reactor of nuclear power plants that the utility model provides, make full use of existing system configuration, under the prerequisite not affecting respective unit function, when losing main feedwater, the main feed system of two units is had complementary functions, run with holding power or realize safe shutdown, to prevent depth defense system or engineered safeguards features action, improve the security of nuclear power generating sets.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
Referring to Fig. 1, the main feed system of a kind of pair of reactor of nuclear power plant, comprise two cover units, often overlap unit and include the steam generator 1 connected successively, main feed water pipe line 2, main feed pump source line 8 and oxygen-eliminating device 9, main feed pump source line 8 is also provided with main feed pump 7, main feed pump source line 8 between main feed pump 7 and oxygen-eliminating device 9 is also connected with main feed pump entrance shared pipeline 22, the main feed pump entrance shared pipeline 22 of two cover units is interconnected, main feed water pipe line 2 between main feed pump 7 and steam generator 1 is also connected with main feed pump and exports shared pipeline 21, the main feed pump outlet shared pipeline 21 of two cover units is interconnected, two cover units also comprise the main feed pump discharge pipe 11 for subsequent use connected successively respectively, main feed pump 13 for subsequent use, main feed-water intake pipeline 14 for subsequent use, condensate water pipe 17 and condensate tank 18, main feed pump discharge pipe 11 for subsequent use is also connected on main feed pump outlet shared pipeline 21, main feed pump source line 14 for subsequent use also connects main feed pump entrance shared pipeline 22, the junction of main feed pump outlet shared pipeline 21 and main feed water pipe line 2 and and the junction of main feed pump discharge pipe 11 for subsequent use between be also provided with main feed pump for subsequent use and export isolation valve 10, the junction of main feed pump entrance shared pipeline 22 and main feed water pipe line 2 and and the junction of main feed pump source line 14 for subsequent use between be also provided with main feed pump source line isolation valve 15 for subsequent use, condensate water pipe 17 is also provided with condensate water pipe isolation valve 16.
Main feed pump outlet shared pipeline 21 between two cover units is provided with on the main feed pump entrance shared pipeline 22 between main feed pump outlet shared pipeline isolation valve 19, two cover unit and is provided with main feed pump entrance shared pipeline isolation valve 20.
Main feedwater outlet pipeline 11 for subsequent use is also provided with main feed pump outlet non-return valve 12 for subsequent use.
Main feed water pipe line 2 between the junction of main feedwater outlet shared pipeline 21 and main feed water pipe line 2 and steam generator 1 is provided with main feed check (valve) 3, main feed water isolating valve 4 and main feed-regulating valve 5.
Main feed water pipe line 2 between the junction of main feedwater outlet shared pipeline 21 and main feed water pipe line 2 and main feed pump 7 is provided with main feed pump outlet non-return valve 6.
During normal operation, the main feed pump 7 often overlapping unit is fetched water from oxygen-eliminating device 9, is supplied water to steam generator 1 by main feed water pipe line 2.Main feed pump 13 for subsequent use is in stand-by state, and main feed pump outlet isolation valve 10, main feed pump source line isolation valve 15 for subsequent use and condensate water pipe isolation valve 16 for subsequent use are in closed condition.Main feed pump outlet shared pipeline isolation valve 19 and main feed pump entrance shared pipeline isolation valve 20 are closed, and isolate between two cover units, non-interference.
When wherein one group of unit occurs to lose main water supply accident, the main feed pump outlet isolation valve 10 for subsequent use of this cover unit, main feed pump source line isolation valve 15 for subsequent use, the main feed pump outlet shared pipeline isolation valve 19 of two cover units and main feed pump entrance shared pipeline isolation valve 20 are opened, the main feed pump for subsequent use 13 of another set of unit starts, fetch water from the oxygen-eliminating device 9 that the unit losing main water supply accident occurs, through there is the main feed pump entrance shared pipeline 22 of the unit losing main water supply accident, the main feed pump source line 14 for subsequent use of another set of unit, main feed pump discharge pipe 11 for subsequent use, there is main feed pump outlet shared pipeline 21 and the main feed water pipe line 2 of the unit losing main water supply accident, supply water to the steam generator 1 that the unit losing main water supply accident occurs.If the reason losing main feedwater is main feed pump 7 fault owing to there is the unit losing main water supply accident, then can maintain certain Power operation by said process, and isolation maintenance is carried out to main feed pump 7.If losing main feedwater is because dead electricity causes, then first supplied water to the steam generator 1 that the unit losing main water supply accident occurs by said process, during water shortage in oxygen-eliminating device 9, close main feed pump source line isolation valve 15 for subsequent use, open condensate water pipe isolation valve 16, main feed pump 13 for subsequent use is fetched water from condensate tank 18, and is squeezed into steam generator 1 simultaneously, thus take away primary Ioops heat, realize safe shutdown.
The beneficial effects of the utility model are: the main feed system of two reactor of nuclear power plants that the utility model provides, make full use of existing system configuration, under the prerequisite not affecting respective unit function, when losing main feedwater, the main feed system of two units is had complementary functions, run with holding power or realize safe shutdown, to prevent depth defense system or engineered safeguards features action, improve the security of nuclear power generating sets.
More than show and describe ultimate principle of the present utility model, principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope, the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. the main feed system of a two reactor of nuclear power plant, comprise two cover units, the described unit that often overlaps includes the steam generator connected successively, main feed water pipe line, main feed pump source line and oxygen-eliminating device, described main feed pump source line is also provided with main feed pump, it is characterized in that, main feed pump source line between described main feed pump and oxygen-eliminating device is also connected with main feed pump entrance shared pipeline, the main feed pump entrance shared pipeline of two cover units is interconnected, main feed water pipe line between described main feed pump and steam generator is also connected with main feed pump and exports shared pipeline, the main feed pump outlet shared pipeline of two cover units is interconnected, two cover units also comprise the main feed pump discharge pipe for subsequent use connected successively respectively, main feed pump for subsequent use, main feed-water intake pipeline for subsequent use, condensate water pipe and condensate tank, described main feed pump discharge pipe for subsequent use is also connected on main feed pump outlet shared pipeline, described main feed pump source line for subsequent use also connects main feed pump entrance shared pipeline, the junction of described main feed pump outlet shared pipeline and main feed water pipe line and and the junction of main feed pump discharge pipe for subsequent use between be also provided with main feed pump for subsequent use and export isolation valve, the junction of described main feed pump entrance shared pipeline and main feed water pipe line and and the junction of main feed pump source line for subsequent use between be also provided with main feed pump source line isolation valve for subsequent use, described condensate water pipe is also provided with condensate water pipe isolation valve.
2. the main feed system of a kind of pair of reactor of nuclear power plant according to claim 1, it is characterized in that, main feed pump outlet shared pipeline between described two cover units is provided with main feed pump outlet shared pipeline isolation valve, the main feed pump entrance shared pipeline between described two cover units is provided with main feed pump entrance shared pipeline isolation valve.
3. the main feed system of a kind of pair of reactor of nuclear power plant according to claim 1 or 2, is characterized in that, described main feedwater outlet pipeline for subsequent use is also provided with main feed pump outlet non-return valve for subsequent use.
4. the main feed system of a kind of pair of reactor of nuclear power plant according to claim 3, it is characterized in that, the main feed water pipe line between the junction of described main feedwater outlet shared pipeline and main feed water pipe line and steam generator is provided with main feed check (valve), main feed water isolating valve and main feed-regulating valve.
5. the main feed system of a kind of pair of reactor of nuclear power plant according to claim 4, is characterized in that, the main feed water pipe line between the junction of described main feedwater outlet shared pipeline and main feed water pipe line and main feed pump is provided with main feed pump outlet non-return valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520450112.7U CN204760045U (en) | 2015-06-26 | 2015-06-26 | Main feed system in two core power stations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520450112.7U CN204760045U (en) | 2015-06-26 | 2015-06-26 | Main feed system in two core power stations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204760045U true CN204760045U (en) | 2015-11-11 |
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ID=54474727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520450112.7U Withdrawn - After Issue CN204760045U (en) | 2015-06-26 | 2015-06-26 | Main feed system in two core power stations |
Country Status (1)
| Country | Link |
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| CN (1) | CN204760045U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934080A (en) * | 2015-06-26 | 2015-09-23 | 上海核工程研究设计院 | Main water supply system of double-reactor nuclear power station |
-
2015
- 2015-06-26 CN CN201520450112.7U patent/CN204760045U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934080A (en) * | 2015-06-26 | 2015-09-23 | 上海核工程研究设计院 | Main water supply system of double-reactor nuclear power station |
| CN104934080B (en) * | 2015-06-26 | 2017-05-31 | 上海核工程研究设计院 | A kind of pair of main feed system of reactor of nuclear power plant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20170531 |
|
| AV01 | Patent right actively abandoned |