CN110761360B - Water intaking system of nuclear power - Google Patents
Water intaking system of nuclear power Download PDFInfo
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- CN110761360B CN110761360B CN201910949743.6A CN201910949743A CN110761360B CN 110761360 B CN110761360 B CN 110761360B CN 201910949743 A CN201910949743 A CN 201910949743A CN 110761360 B CN110761360 B CN 110761360B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
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Abstract
The invention discloses a nuclear power water taking system, which comprises: the water taking gate well is used for taking water from the open sea, the water distribution well is respectively connected with the small-pile water supply system and the large-pile water supply system, and the water distribution well is respectively used for distributing water to the small-pile water supply system and the large-pile water supply system. The nuclear power water taking system simultaneously takes water from small piles and large piles, the water taking gate well, the water taking tunnel and the water distribution well are shared by small pile water taking and large pile water taking, the engineering cost is reduced, the economy of small pile water taking construction is improved, the feasibility and the reliability are both considered, the section size of the shared water taking tunnel is large, the water loss along the journey is small, the influence of marine organism adhesion is small, and the reliability of small pile water taking is improved.
Description
Technical Field
The invention belongs to the technical field of nuclear power plant water conservancy projects, and particularly relates to a water taking system for nuclear power.
Background
The small reactor is a small-power nuclear reactor type, and the small reactor water taking system is a relatively independent single project which mainly supplies water for a cold source system. Generally, a water intake system of a nuclear power plant includes structures such as a water intake gate well, a water intake tunnel (or water intake pipe, if any), through which seawater is taken from an open channel and then led to a pump room through the water intake tunnel (or water intake pipe).
For a small pile constructed adjacent to a large pile and adopting a single-pile arrangement, if a set of independent water taking systems are separately designed for the small pile and a single water taking tunnel is arranged according to a conventional design method, three problems can be faced: firstly, a small-pile factory water system requires that water supply is still guaranteed during shutdown maintenance, a water taking tunnel needs to be maintained during shutdown, and water cannot be supplied to the factory water system during maintenance; secondly, a set of water taking system is independently built for a small pile, a water taking gate well, a water taking tunnel (or a water taking pipeline) and the like need to be newly built, the cost is high, the unit power cost of the water taking system is relatively high in consideration of the low power generation capacity of the small pile, and the economic performance of the project is not good; thirdly, the small water taking tunnel (or water taking pipeline) has small size, great water loss along the way under the designed flow speed, and the small section size is greatly influenced by the attachment of marine organisms, thus influencing the safety of water taking.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a nuclear power water taking system aiming at the defects in the prior art, water is taken for small piles and large piles at the same time, and the water taking gate well, the water taking tunnel and the water distribution well are shared by the small pile water taking and the large pile water taking, so that the construction cost is reduced, and the economy of small pile water taking construction is improved.
The technical scheme adopted for solving the technical problem of the invention is to provide a nuclear power water taking system, which comprises: the water taking gate well is used for taking water from the open sea, the water distribution well is respectively connected with the small-pile water supply system and the large-pile water supply system, and the water distribution well is respectively used for distributing water to the small-pile water supply system and the large-pile water supply system.
Preferably, the water intake system for nuclear power further includes: and the water distribution well plant is connected with the water taking tunnel, and the water distribution well is arranged in the water distribution well plant.
Preferably, the water intake system for nuclear power further includes:
the large-pile water taking gate is arranged on a plant of the water distribution well and is connected with the water distribution well;
the small-pile water taking gate is arranged on a plant of the water distribution well and is connected with the water distribution well;
the water taking tunnel is used for taking water from a large pile, the head end of the water taking tunnel is connected with a water taking gate of the large pile, the tail end of the water taking tunnel of the large pile is connected with a water supply system of the large pile, and the water taking tunnel of the large pile is positioned outside a water distribution well plant;
a small water taking tunnel is used for small water taking, the head end of the small water taking tunnel is connected with a small water taking gate, the tail end of the small water taking tunnel is connected with a small water supply system, and the small water taking tunnel is located outside a water distribution well plant.
Preferably, the flow speed of water in the single large-pile water taking tunnel is 2-3 m/s, and the design flow is 100% of the water consumption of the large-pile unit.
Preferably, the material of the large-scale water taking tunnel is reinforced concrete.
Preferably, the flow velocity of water in the single small-pile water taking tunnel is 2-3 m/s, and the design flow is 100% of the water consumption of the small-pile unit.
Preferably, the small-pile water taking tunnel is made of reinforced concrete, high-density polyethylene and glass fiber reinforced plastic wrapped rigid-entering concrete.
Preferably, the number of the small-pile water taking tunnels is two, and the number of the small-pile water taking gates is the same as that of the small-pile water taking tunnels;
the two large-pile water taking tunnels are provided, and the large-pile water taking gate is the same as the large-pile water taking tunnels in quantity. The distribution well is divided into two grids, wherein a large water-taking gate well is arranged in the direction corresponding to a large water-taking tunnel on one grid distribution well, and a small water-taking gate well is arranged in the direction corresponding to a small water-taking tunnel.
Two small water taking tunnels are provided, one tunnel is used for standby, when small-pile shutdown maintenance is realized, one small water taking tunnel supplies water for the factory water system of the small pile, and the other small water taking tunnel is closed for dry maintenance.
Preferably, the section of the water taking tunnel is any one of a rectangle, a circle and a horseshoe.
Preferably, the large pile of the large pile water supply system is double pile, and the small pile of the small pile water supply system is single pile.
Preferably, the water taking gate well is one, and the number of the water taking tunnels is two.
The nuclear power water taking system simultaneously takes water from small piles and large piles, the water taking gate well, the water taking tunnel and the water distribution well are shared by small pile water taking and large pile water taking, the engineering cost is reduced, the economy of small pile water taking construction is improved, the feasibility and the reliability are both considered, the section size of the shared water taking tunnel is large, the water loss along the journey is small, the influence of marine organism adhesion is small, and the reliability of small pile water taking is improved.
Drawings
Fig. 1 is a schematic structural view of a nuclear power water intake system in embodiment 2 of the present invention.
In the figure: 1-water intake gate well; 2-tunnel for taking water; 3-distributing a water well; 4-distribution well factory building;
5-large-pile water intake gate; 6-small water-taking gate; 7-large-pile water taking tunnel; 8-small water-taking tunnel.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
This embodiment provides a water intaking system of nuclear power, includes: the water taking gate well is used for taking water from the open sea, the water distribution well is respectively connected with the small-pile water supply system and the large-pile water supply system, and the water distribution well is respectively used for distributing water to the small-pile water supply system and the large-pile water supply system.
The water intaking system of nuclear power in this embodiment simultaneously for the heap, the heap carries out the water intaking greatly, water intaking gate well, water intaking tunnel, distribution well for heap water intaking greatly, share, reduced engineering cost, improved the economic nature of heap water intaking construction, taken into account feasibility, reliability, the section size of the water intaking tunnel of sharing is big, the on-way water loss is little, it is little to receive the adnexed influence of marine life, has improved the reliability of heap water intaking.
Example 2
As shown in fig. 1, the present embodiment provides a water intaking system for nuclear power, including: the water intake gate well 1, the water intake tunnel 2 and the distribution well 3 are connected in sequence, the water intake gate well 1 is used for taking water from open sea, the distribution well 3 is respectively connected with a small-pile water supply system and a large-pile water supply system, and the distribution well 3 is respectively used for distributing water to the small-pile water supply system and the large-pile water supply system.
Specifically, the small pile in this embodiment is adjacent to the large pile. This technical scheme can satisfy the water demand of little heap at the station service water system of shut-down period, effectively reduces the water loss and the adnexed influence of marine organism of water intaking system to thereby the cost of the water intaking of little heap is reduced to the water intaking system of make full use of sharing. The water taking gate well 1, the water taking tunnel 2 and the water distribution well 3 are shared by small piles and large piles, and water is taken from the open sea.
Preferably, the section of the water taking tunnel 2 is one of rectangular, circular and horseshoe-shaped. Specifically, the section of the water taking tunnel 2 in this embodiment is rectangular.
It should be noted that, the water intake system for nuclear power in this embodiment further includes: and the water distribution well factory building 4 is connected with the water taking tunnel 2, and the water distribution well 3 is arranged in the water distribution well factory building 4.
The water from the water taking tunnel 2 is distributed to a large pile and a small pile through the water distribution well plant 4, and the seawater is isolated when the water taking tunnel 2 is overhauled, so that a dry overhaul condition is created.
It should be noted that, the water intake system for nuclear power in this embodiment further includes:
the large-pile water taking gate 5 is arranged on the water distribution well workshop 4 and is connected with the water distribution well 3;
a small-pile water taking gate 6 which is arranged on the water distribution well workshop 4 and is connected with the water distribution well 3;
the large-pile water taking tunnel 7 is used for large-pile water taking, the head end of the large-pile water taking tunnel 7 is connected with the large-pile water taking gate 5, the tail end of the large-pile water taking tunnel 7 is connected with a large-pile water supply system, and the large-pile water taking tunnel 7 is positioned outside the water distribution well plant 4;
a small heap water taking tunnel 8 used for small heap water taking, the head end of the small heap water taking tunnel 8 is connected with a small heap water taking gate 6, the tail end of the small heap water taking tunnel 8 is connected with a small heap water supply system, and the small heap water taking tunnel 8 is positioned outside the water distribution well factory building 4.
It should be noted that, in the single large-pile water taking tunnel 7 in this embodiment, the flow rate of water therein is 2-3 m/s, and the design flow is 100% of the water consumption of the large-pile unit.
In this embodiment, the material of the large-scale water intake tunnel 7 is reinforced concrete.
It should be noted that the flow rate of water in the single small-pile water taking tunnel 8 in the embodiment is 2-3 m/s, and the design flow is 100% of the water consumption of the small-pile unit.
Preferably, the small-pile water taking tunnel 8 is made of reinforced concrete, high-density polyethylene and glass fiber reinforced plastic wrapped rigid-entering concrete. Specifically, the material of the small-pile water taking tunnel 8 in this embodiment is reinforced concrete.
It should be noted that, in this embodiment, there are two small-pile water taking tunnels 8, and the small-pile water taking gates 6 and the small-pile water taking tunnels 8 are the same in number;
the number of the large-pile water taking tunnels 7 is two, and the large-pile water taking gate 5 is the same as the number of the large-pile water taking tunnels 7.
Specifically, the distribution well 3 in this embodiment is designed in two compartments, wherein a large water intake gate 5 is designed in a direction corresponding to a large water intake tunnel 7 on one compartment of the distribution well 3, and a small water intake gate 6 is designed in a direction corresponding to a small water intake tunnel 8. The number of the small water taking tunnels 8 is two, one tunnel is used for standby, when the small water taking tunnel is stopped and maintained, one tunnel 8 supplies water for the plant water system of the small water pile, and the other tunnel 8 is closed for dry maintenance.
It should be noted that the large pile of the large pile water supply system in this embodiment is a double pile, and the small pile of the small pile water supply system is a single pile.
It should be noted that, in this embodiment, the number of the water intake gate wells 1 is one, and the number of the water intake tunnels 2 is two. The designed water intake amount of the single water intake tunnel 2 is the sum of the water intake amounts of one large pile unit and one small pile unit. Preferably, the route of the single water taking tunnel 2 is a straight line, a broken line or a bent line. Specifically, the route of the single water taking tunnel 2 in this embodiment is a straight line.
The nuclear power water taking system in the embodiment works as follows:
when the water taking gate well operates normally, the water taking gate well 1 and the water taking tunnel 2 work simultaneously; the small water taking tunnels 8 are used for one time, the corresponding small water taking gates 6 are opened and closed, and the open sea water passes through the water taking gate well 1, the water taking tunnel 2 and the water distribution well plant 4, and then is supplied to the small piles through the small water taking tunnel 8 and the small pile water supply system; two of the large-pile water taking tunnels 7 work simultaneously, water is supplied to the two large-pile units through a large-pile water supply system, and the water taking path is a water taking gate well 1, a water taking tunnel 2, a water distribution well plant 4 and the large-pile water taking tunnel 7.
When the small heap is stopped and overhauled, one of the small heap water taking tunnels 8 continues to supply water for the plant water system of the small heap, and the other one can carry out dry overhaul by closing the corresponding small heap water taking gate 6.
When one large-pile unit stops piling and overhauling, the corresponding large-pile water taking gate 5 is closed, so that the corresponding large-pile water taking tunnel 7 can be overhauled without influencing normal water taking of the small-pile unit and the other large-pile unit.
When a large reactor unit and a small reactor unit are overhauled simultaneously, a large reactor water intake gate 5 and a small reactor water intake gate 6 corresponding to the overhaul unit are closed, so that the dry overhaul of the water intake tunnel 2 can be realized, and the normal operation of the other large reactor unit is not influenced.
To sum up, this embodiment can realize and when arbitrary unit overhauls, water intaking tunnel 2 all possesses the dry condition of overhauing, and does not influence the water intaking of other units, and can guarantee the water supply of its house service water system when little heap unit is stopped the pile and is overhauld.
In addition, the shared water taking tunnel 2 has larger size, effectively reduces the on-way water loss of the water taking facility, is slightly influenced by the attachment of marine organisms, and improves the reliability of small-pile water taking. Meanwhile, the water taking tunnel 2 is built jointly, so that the construction cost is reduced, and the economy of the small-pile water taking system construction is improved.
The water intaking system of nuclear power in this embodiment simultaneously for the heap, the water intaking is carried out to the heap, water intaking gate well 1, water intaking tunnel 2, distribution well 3 are heap water intaking, the sharing of heap water intaking greatly, have reduced engineering cost, have improved the economic nature of heap water intaking construction, have taken into account feasibility, reliability, the cross sectional dimension of shared water intaking tunnel 2 is big, the on-way water loss is little, it is little to receive the adnexed influence of marine life, has improved the reliability of heap water intaking.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (7)
1. A water intaking system of nuclear power, its characterized in that includes: the water intaking gate well, the water intaking tunnel, the distribution well that connect gradually, the water intaking gate well is used for following open sea water intaking, and the distribution well is connected with little heap water supply system, big heap water supply system respectively, and the distribution well is used for respectively to little heap water supply system, big heap water supply system water distribution, the water intaking system still includes: the water distribution well plant is connected with the water taking tunnel, and the water distribution well is arranged in the water distribution well plant;
the large-pile water taking gate is arranged on a plant of the water distribution well and is connected with the water distribution well;
the small-pile water taking gate is arranged on a plant of the water distribution well and is connected with the water distribution well;
the water taking tunnel is used for taking water from a large pile, the head end of the water taking tunnel is connected with a water taking gate of the large pile, the tail end of the water taking tunnel of the large pile is connected with a water supply system of the large pile, and the water taking tunnel of the large pile is positioned outside a water distribution well plant;
the small-pile water taking tunnel is used for taking water from small piles, the head end of the small-pile water taking tunnel is connected with a small-pile water taking gate, the tail end of the small-pile water taking tunnel is connected with a small-pile water supply system, and the small-pile water taking tunnel is positioned outside a water distribution well plant;
the water distribution well is divided into two grids, wherein a large pile water taking gate well is arranged in the direction corresponding to the large pile water taking tunnel on one grid of the water distribution well, and a small pile water taking gate well is arranged in the direction corresponding to the small pile water taking tunnel;
the single water taking tunnel is connected with the single-cell distribution well, and the designed water taking amount of the single water taking tunnel is the sum of the water taking amounts of a large pile unit and a small pile unit.
2. The nuclear power water taking system according to claim 1, wherein the flow speed of water in the single large-pile water taking tunnel is 2-3 m/s, and the design flow is 100% of water consumption of the large-pile unit.
3. The nuclear power water taking system according to claim 1, wherein the flow speed of water in the single small-pile water taking tunnel is 2-3 m/s, and the designed flow is 100% of water consumption of the small-pile unit.
4. The nuclear power water intaking system according to claim 1, wherein the mass water intaking tunnel is made of reinforced concrete;
the small-pile water taking tunnel is made of reinforced concrete, high-density polyethylene and glass fiber reinforced plastic externally-wrapped reinforced concrete.
5. The nuclear power water taking system according to any one of claims 1 to 4, wherein the cross section of the water taking tunnel is any one of a rectangle, a circle and a horseshoe.
6. The nuclear power water intake system according to any one of claims 1 to 4, wherein the large pile of the large pile water supply system is a double pile, and the small pile of the small pile water supply system is a single pile.
7. The nuclear power water intaking system according to any one of claims 1 to 4, wherein the water intaking gate shaft is one, and the water intaking tunnels are two.
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| CN201910949743.6A CN110761360B (en) | 2019-10-08 | 2019-10-08 | Water intaking system of nuclear power |
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| CN201910949743.6A CN110761360B (en) | 2019-10-08 | 2019-10-08 | Water intaking system of nuclear power |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE19735805C2 (en) * | 1997-08-18 | 2000-11-09 | Linde Ag | Method and device for providing sea or sea water from great depths |
| CN101800085B (en) * | 2009-02-11 | 2012-06-27 | 中国核电工程有限公司 | Auxiliary water supply system used for nuclear power station single reactor and actuating safety function |
| JP2011140815A (en) * | 2010-01-07 | 2011-07-21 | Chugoku Electric Power Co Inc:The | Water intake and discharge equipment |
| CN103440888B (en) * | 2013-07-01 | 2016-04-06 | 中国核电工程有限公司 | The not homotactic arranged crosswise method of the different unit essential service water systems of nuclear power station |
| CN105544472B (en) * | 2016-01-22 | 2017-05-17 | 杜培文 | Water intake control system and method for water intake gates of reservoir |
| 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 |
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