CN103440888B - The not homotactic arranged crosswise method of the different unit essential service water systems of nuclear power station - Google Patents
The not homotactic arranged crosswise method of the different unit essential service water systems of nuclear power station Download PDFInfo
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- CN103440888B CN103440888B CN201310270682.3A CN201310270682A CN103440888B CN 103440888 B CN103440888 B CN 103440888B CN 201310270682 A CN201310270682 A CN 201310270682A CN 103440888 B CN103440888 B CN 103440888B
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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 invention discloses the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station, the essential service water system of every platform unit of this arranged crosswise method comprises two and arranges by water system, each water system arranges and is provided with interconnective intake tunnel, gate, grid sewage-removing machine, drum type filter screen, water suction closed conduit, essential service water pump group and rising pipe successively along water (flow) direction, two units arranged in a crossed manner with water system row, two of two units are connected with same intake tunnel with the gate of water system row.Arranged crosswise method of the present invention makes two of a unit to arrange arranged apart by water system, and when ensure that the intake tunnel maintenance when a unit, the essential service water system of this unit still can run.The different water train interval of same unit are arranged, when running into the external events such as aircraft collision, can avoid losing two with water system row simultaneously, ensure that the safety of ultimate heat sink.
Description
Technical field
The present invention relates to nuclear power essential service water system field, be specifically related to the not homotactic arranged crosswise method of different unit essential service water systems that the two heap of a kind of nuclear power station when essential service water pump group series is arranged is arranged.
Background technology
The water-supply method major part of the essential service water system of current domestic nuclear power adopts open channel water intaking, water plant build open channel sidewall in, need not consider the maintenance of water suction open channel, the filtration runner in all pump houses all comes from open channel, so can ensure that the water suction of different series is all guaranteed.But when part power station adopts tunnel water intaking; according to the requirement of Power Plant Design; adopt the water-supply method of a unit tunnel; according to the system requirements in power station; essential service water system also cannot be out of service when power station maintenance down; so when must ensure the intake tunnel maintenance when this unit; the essential service water system of this unit must from the water intaking of another one series, the method for a kind of essential service water system different unit different series arranged crosswise that the present invention proposes for this design requirement just.
Summary of the invention
For the needs of the defect existed in prior art and practical application, the object of the present invention is to provide the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station, improve the water intaking security of unit.
For achieving the above object, the technical solution used in the present invention is as follows:
The not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station, the essential service water system of every platform unit of described arranged crosswise method comprises two and arranges by water system, each water system arranges and is provided with interconnective intake tunnel, gate, grid sewage-removing machine, drum type filter screen, water suction closed conduit, essential service water pump group and rising pipe successively along water (flow) direction, two units arranged in a crossed manner with water system row, two of two units are connected with same intake tunnel with the gate of water system row.
Further, the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as above, two of same unit are arranged with water system row interval.
Further, the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as above, described essential service water pump group is two essential service water pumps in parallel.
Further again, the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as above, two that share same intake tunnel are provided with isolation valve with between the water suction closed conduit of water system row.
Further, the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as above, between drum type filter screen and water suction closed conduit, absorbing water is equipped with isolation valve between closed conduit and essential service water pump and between essential service water pump and rising pipe.
Beneficial effect of the present invention is: arranged crosswise method of the present invention, makes two of a unit to arrange arranged apart by water system, and when ensure that the intake tunnel maintenance when a unit, the essential service water system of this unit still can run.The different water train interval of same unit are arranged, when running into the external events such as aircraft collision, can avoid losing two with water system row simultaneously, ensure that the safety of ultimate heat sink.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station of the present invention.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is described in further detail.
Fig. 1 shows the schematic diagram of the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station of the present invention, this figure is the layout schematic diagram of the essential service water system of two units, the essential service water system of every platform unit comprises A, B two arranges by water system, two of a unit are classified as 1A and 1B by water system, two of another unit are classified as 2A and 2B by water system, each water system row include the interconnective intake tunnel 2 set gradually along water (flow) direction, gate 3, grid sewage-removing machine 4, drum type filter screen 5, water suction closed conduit 7, essential service water pump group 9 and rising pipe 11.Wherein, two different units arranged in a crossed manner with water system row, as Fig. 1, two of No. 1 unit with water system row 1A, 1B, with two of No. 2 units by water system row 2A, 2B arranged crosswise, namely 1A by 2B, 1B by 2A.Two of two units are connected with same intake tunnel 2 with the gate 3 of water system row.During in order to avoid running into the external events such as aircraft collision, two that lose same unit arrange by water system simultaneously, and two of same unit are arranged with water system row interval, make two of same unit to separate with water system row.
In present embodiment, essential service water pump group 9 is two essential service water pumps in parallel, two that share same intake tunnel 2 are provided with isolation valve with between the water suction closed conduit 7 of water system row, between drum type filter screen and water suction closed conduit, absorbing water is equipped with isolation valve between closed conduit and essential service water pump and between essential service water pump and rising pipe, is respectively isolation valve 6, isolation valve 8 and isolation valve 10.
For making the present invention more clear, after method for arranging of the present invention now will be adopted to arrange essential service water system, the specific works mode of essential service water system will be described as follows:
Two units adopt two essential service water intake tunnels 2 to fetch water from water-fetching head 1, enter after plant area's pump house through gate 3, grid sewage-removing machine 4, water suction closed conduit 7 is entered after drum type filter screen 5 and water inlet isolation valve 6, water suction closed conduit 7 exists as the suction well of water pump, essential service water pump group 9 is absorbed water from water suction closed conduit 7 by water inlet isolation valve 8, two essential service water series 1A of No. 1 unit, 1B, with the essential service water series 2A of No. 2 units, 2B arranged crosswise, as in Fig. 1, the intake tunnel 2 of top overhauls, then 1B, 2A can use, intake tunnel 2 as below overhauls, then 1A, 2B can use.And 1A, 2B, 1B, 2A interval is arranged, makes two of a unit series arranged apart, if run into the external events such as aircraft collision, can avoid losing two essential service water series simultaneously, ensure the safety of ultimate heat sink.
Obviously, those skilled in the art can carry out various change and modification to the present 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 technology thereof, then the present invention is also intended to comprise these change and modification.
Claims (4)
1. the not homotactic arranged crosswise method of the different unit essential service water systems of nuclear power station, it is characterized in that: the essential service water system of every platform unit of described arranged crosswise method comprises two and arranges by water system, each water system arranges and is provided with interconnective intake tunnel (2) successively along water (flow) direction, gate (3), grid sewage-removing machine (4), drum type filter screen (5), water suction closed conduit (7), essential service water pump group (9) and rising pipe (11), two units with water system row arranged in a crossed manner, two of two units are connected with same intake tunnel (2) with the gate (3) of water system row, two of same unit are arranged with water system row interval.
2. the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as claimed in claim 1, is characterized in that: described essential service water pump group (9) is two essential service water pumps in parallel.
3. the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as claimed in claim 2, is characterized in that: two that share same intake tunnel (2) are provided with isolation valve with between the water suction closed conduit (7) of water system row.
4. the not homotactic arranged crosswise method of the different unit essential service water systems of a kind of nuclear power station as claimed in claim 3, is characterized in that: between drum type filter screen (5) and water suction closed conduit (7), absorbing water between closed conduit (7) and essential service water pump and between essential service water pump and rising pipe (11) is equipped with isolation valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310270682.3A CN103440888B (en) | 2013-07-01 | 2013-07-01 | The not homotactic arranged crosswise method of the different unit essential service water systems of nuclear power station |
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| CN201310270682.3A CN103440888B (en) | 2013-07-01 | 2013-07-01 | The not homotactic arranged crosswise method of the different unit essential service water systems of nuclear power station |
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| CN103440888A CN103440888A (en) | 2013-12-11 |
| CN103440888B true CN103440888B (en) | 2016-04-06 |
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| CN107489185B (en) * | 2017-06-23 | 2021-04-27 | 中国核电工程有限公司 | Important plant water taking structure with bypass for nuclear power station |
| CN109281370B (en) * | 2018-10-08 | 2020-09-01 | 中国核电工程有限公司 | Drainage system of nuclear power |
| CN110761360B (en) * | 2019-10-08 | 2021-07-13 | 中国核电工程有限公司 | Water intaking system of nuclear power |
| CN111933321B (en) * | 2020-07-17 | 2024-06-07 | 中核核电运行管理有限公司 | Heavy water pile radioactive waste liquid discharge loop system and method |
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| US5202083A (en) * | 1992-02-28 | 1993-04-13 | Atomic Energy Of Canada Limited | Passive shutdown cooling system for nuclear reactors |
| CN201635051U (en) * | 2010-03-15 | 2010-11-17 | 江苏核电有限公司 | Subsystem water supplying diversion device |
| CN101976589B (en) * | 2010-09-14 | 2012-11-28 | 中广核工程有限公司 | Nuclear island cooling system for double reactor units and cooling method thereof |
| CN202332313U (en) * | 2011-11-29 | 2012-07-11 | 中广核工程有限公司 | Essential service water system of nuclear power station |
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