CN103088790B - Steel outlet for power plant circulating water and construction method thereof - Google Patents
Steel outlet for power plant circulating water and construction method thereof Download PDFInfo
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- CN103088790B CN103088790B CN201110331263.7A CN201110331263A CN103088790B CN 103088790 B CN103088790 B CN 103088790B CN 201110331263 A CN201110331263 A CN 201110331263A CN 103088790 B CN103088790 B CN 103088790B
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Abstract
A steel outlet for power plant circulating water comprises a drainage master pipe. An equal diameter transverse pipe is welded to the tail end of the drainage master pipe. Diffusion pipes are distributed on the drainage transverse pipe at equal intervals. Steel cases are welded at anchored piers on the drainage transverse pipe. The steel outlet for power plant circulating water has the advantages that diffusion of hot water is facilitated by arranging the diffusion pipes on the master pipe; the use of the steel outlet compared with the way of tunnel and open-channel drainage needs no cofferdam construction, construction period is shortened evidently when conditions are proper; cold- and hot-water mixing and vertical diffusion are enhanced for the outlet by wide water area and large water depth, the requirement for environment protection is met, investment is also saved; the construction process is effective in diffusion as compared with the conventional tunnel drainage or drainage by open concrete ditch outlets, operating fleets are easy to organize, construction period can be shortened, and construction investment is decreased.
Description
Technical field
What the present invention relates to is the power plant adopting direct cooling, comprises the steel outlet that offshore is arranged under the geological conditions of nearly lake, strand such as fire coal, fuel oil, combustion gas, nuclear power and construction method, belongs to power generation plant technology field.
Background technology
Along with the fast development of China's economy, power plant of China installation total amount and single-machine capacity also increase fast, the particularly construction of Large Copacity nuclear power plant, makes power plant also increasing to the requirement of the circulating cooling water yield, and strand and large-size lake, reservoir direct cooling water supply plant project get more and more.Recirculated water direct drainage mouth design scheme common at present mainly contains bank open type draining, tunnel type draining etc., adopts reinforced concrete structure more.
The open type outfall adopting bank to arrange and tunnel type outfall, go out flow velocity large, need be aided with kinds of artificial energy dissipater or fall bank formula absorption basin and carry out energy dissipating.For preventing washing away, needing to process the soft foundation under outfall and reinforce, implementing necessary block protect bottom of the reservior bank slope, when constructing as adopted nonirrigated farmland method, coffering amount is larger; Environmental requirement is at present comparatively strict in addition, all requires in outfall certain distance, reach certain water temperature requirement.Adopt the water outlet of this patent, namely the piping be made up of draining mother pipe, dewatering horizontal tube and anemostat, offshore 100m ~ 500m is arranged in the bottom, the middle of a lake, utilize vast expanse of waters and larger depth of water reinforced platoon mouth of a river hot and cold water blending and vertically spread, meet environmental requirement, in some cases also can reduction of erection time and reducing investment outlay.
Summary of the invention
Object of the present invention provides a kind of easy construction, the recirculated water outfall new structure of small investment and construction method.
For achieving the above object, the present invention is by the following technical solutions:
A kind of electric power plant circulating water steel outlet, it comprises draining mother pipe, is welded isometrical dewatering horizontal tube, dewatering horizontal tube equidistantly lays anemostat at the female pipe end of draining; And on dewatering horizontal tube corresponding anchor block position weldable steel casing.
The suitable for reading of described steel jacket box, anchor block end face reinforced mesh is set.
Described draining mother pipe, dewatering horizontal tube and anemostat are steel work.
A construction method for electric power plant circulating water steel outlet, it comprises the steps:
The first step: channel excavation, adopts dredger underwater excavation groove to design elevation;
Second step: on the coast draining mother pipe, dewatering horizontal tube and anemostat are made complete, then corresponding anchor block position weldable steel casing on dewatering horizontal tube, each steel pipe of pouring water after adopting boats and ships water surface stringing location;
3rd step: adopt operation fleet to carry out steel pipe water surface location;
4th step: the assembling of steel pipe system, transportation by driving water-filling sinks down into assigned address;
5th step: adopt tremie method to use Grouting Pipe to carry out anchor block underwater concreting; As the depth of water is greater than 15m, then use prepacked aggregate grouting concrete construction technology in anchor block steel jacket box instead;
6th step: trench backfill is to design elevation; Bottom of the reservior, local jackstone is reinforced.
The suitable for reading of described steel jacket box arranges anchor block end face reinforced mesh, adopts underwater concreting method to carry out anchor block and builds.
Adopt the present invention of technique scheme, have the following advantages:
(1) adopt the method for female Guan Shangshe anemostat, be conducive to the diffusion of hot water;
(2) contrast tunnel and open tunnel type drainage pattern, the present invention, without the need to construction cofferdam, obviously can shorten construction period during conditions being possessed;
(3) utilize vast expanse of waters and larger depth of water reinforced platoon mouth of a river hot and cold water blending and vertically spread, meeting environmental requirement, also can reduce investment outlay;
(4) draining of Construction Process Comparison conventional tunnel formula or open type concrete ditch outfall, diffusion effect is good, can the reduction of erection time when operation fleet easily organizes, cost saving;
(5) contrast traditional with mixer, aggregate and cement, water etc. are stirred after, carry out outside on-the-spot underwater casting and the mode of making firm by ramming with conduit and concrete mixer, prepacked aggregate slip casting method advantage of the present invention is as follows: a, can in flowing water concreting; B, the profundal zone concreting of 20m can be greater than in the depth of water; C, preferablyly to apply in the filling Underwater Engineering such as crib and the hole of caisson inside, the hole of basement bottom of the building and hole.
Accompanying drawing explanation
Fig. 1 is recirculated water outfall top view of the present invention.
Fig. 2 be in Fig. 1 A-A to sectional view.
Detailed description of the invention
As shown in Figure 1 and Figure 2, the present invention forms piping by draining female pipe 1, dewatering horizontal tube 2 and anemostat 3, and offshore 100m ~ 500m is arranged in the bottom, the middle of a lake.Its entirety is steel work, is welded isometrical dewatering horizontal tube 2 at female pipe 1 end of draining, and equidistant laying anemostat 3 on dewatering horizontal tube 2, to accelerate the mixing and diffusion of current.Weldable steel casing 4 in recirculated water outfall, as transverse tube anchor block side form under water, immersed tube rear employing underwater grouting in place builds anchor block concrete, is fixed steel pipe.Wherein, steel jacket box 4, should with dewatering horizontal tube 2 firm welded with tight as the template under water of anchor block; prevent from toppling over, disintegrate and conjugating; before bearing initial set concrete mix lateral pressure and prevent running pulp, ensure concrete pouring quality, it also can be used as the permanent protective layer outside anchor block.
The construction method of above-mentioned outfall is as follows:
The first step: channel excavation, adopts dredger underwater excavation groove to design elevation, grabs to dig smooth, and it is levelling suitably to repair slope.
Second step: on the coast female for draining pipe 1, dewatering horizontal tube 2 and anemostat 3 are made complete, then corresponding anchor block position weldable steel casing 4 on dewatering horizontal tube 2, wherein, anchor block steel jacket box 4 adopts steel sheet to make, then preservative treatment is carried out to each steel pipe, each steel pipe of pouring water after finally adopting boats and ships water surface stringing location.
3rd step: adopt operation fleet to carry out steel pipe water surface location.Specifically, boats and ships are under the external force of environment effects such as wind, wave, stream, and can produce revolution, drift about and the coupled motions such as sway, need balance various external force of environment by pre-add anchor holding power and anchor cable tension force, in anchorage water, buoyancy aid is in specified point.In marine environment, radial anchor cable and anchor should be arranged along the different directions of buoyancy aid, most by 8 ~ 10 anchor hawser anchorings; Buoyancy aid in inland waters, normal by flowing downstream and arranging anchor and anchor cable perpendicular to current both direction.After fleet waterborne anchorage, ship upper warp and woof instrument and direction peg is adopted to carry out location of pipeline, crane ship sinking.
4th step: the assembling of steel pipe system, transportation by driving water-filling sinks down into assigned address.
5th step: adopt tremie method to use and carry out anchor block underwater concreting; As the depth of water is greater than 15m, then use Grouting Pipe 5 instead and carry out prepacked aggregate grouting concrete construction in anchor block steel jacket box.Usually the steel pipe of internal diameter DN25 ~ 50mm is selected to be Grouting Pipe 5; The intensity injecting mortar generally should be greater than 1.3 ~ 1.5 times of concrete design class; Different according to prepacked aggregate (block stone, cobble, rubble etc.) kind, the maximum effect radius that slip casing by pressure allows mostly is 2.5 ~ 4.0m, requires higher grouting concrete for design strength and workmanship, and the spacing of Grouting Pipe 5 is arranged by being not more than 2.0m.
6th step: trench backfill is to design elevation; Bottom of the reservior, local jackstone is reinforced.
Steel jacket box is suitable for reading arranges anchor block end face reinforced mesh 6 depending on calculated case, adopts suitable underwater concreting method to carry out anchor block and builds.
Claims (5)
1. an electric power plant circulating water steel outlet, is characterized in that: it comprises draining mother's pipe (1), is welded isometrical dewatering horizontal tube (2), dewatering horizontal tube (2) is equidistantly laid anemostat (3) at draining mother pipe (1) end; And upper corresponding anchor block position weldable steel casing (4) of dewatering horizontal tube (2).
2. electric power plant circulating water steel outlet according to claim 1, is characterized in that: arrange anchor block end face reinforced mesh (6) the suitable for reading of described steel jacket box (4).
3. electric power plant circulating water steel outlet according to claim 1, is characterized in that: described draining mother's pipe (1), dewatering horizontal tube (2) and anemostat (3) are steel work.
4. a construction method for electric power plant circulating water steel outlet as claimed in claim 3, it is characterized in that, it comprises the steps:
The first step: channel excavation, adopts dredger underwater excavation groove to design elevation;
Second step: on the coast draining mother's pipe (1), dewatering horizontal tube (2) and anemostat (3) are made complete, then upper corresponding anchor block position weldable steel casing (4) of dewatering horizontal tube (2), each steel pipe of pouring water after adopting boats and ships water surface stringing location;
3rd step: adopt operation fleet to carry out steel pipe water surface location;
4th step: the assembling of steel pipe system, transportation by driving water-filling sinks down into assigned address;
5th step: adopt tremie method to use Grouting Pipe (5) to carry out anchor block underwater concreting; As the depth of water is greater than 15m, then use prepacked aggregate grouting concrete construction technology in anchor block steel jacket box instead;
6th step: trench backfill is to design elevation; Bottom of the reservior, local jackstone is reinforced.
5. the construction method of electric power plant circulating water steel outlet according to claim 4, is characterized in that: the suitable for reading of described steel jacket box (4) arranges anchor block end face reinforced mesh (6), adopts underwater concreting method to carry out anchor block and builds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331263.7A CN103088790B (en) | 2011-10-27 | 2011-10-27 | Steel outlet for power plant circulating water and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331263.7A CN103088790B (en) | 2011-10-27 | 2011-10-27 | Steel outlet for power plant circulating water and construction method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103088790A CN103088790A (en) | 2013-05-08 |
| CN103088790B true CN103088790B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110331263.7A Expired - Fee Related CN103088790B (en) | 2011-10-27 | 2011-10-27 | Steel outlet for power plant circulating water and construction method thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09217332A (en) * | 1996-02-09 | 1997-08-19 | Hitachi Ltd | Garbage-proof equipment for drainage system |
| CN1206058A (en) * | 1997-07-18 | 1999-01-27 | 胡鸣群 | Water drainage method and belt drainage component used therein |
| JP2001329520A (en) * | 2000-05-22 | 2001-11-30 | Ishikawajima Harima Heavy Ind Co Ltd | Tailrace facilities and discharge method |
| CN201025228Y (en) * | 2007-04-10 | 2008-02-20 | 李电学 | A device for power generation based on recycling water |
| CN101775790A (en) * | 2010-01-11 | 2010-07-14 | 广东省电力设计研究院 | Arrangement structure of circulating water taking and draining structure of power plant |
| CN201952835U (en) * | 2010-11-19 | 2011-08-31 | 浙江省电力设计院 | Water inlet pipe and water outlet pipe duct superposition arrangement structure for circulation water of power plant |
-
2011
- 2011-10-27 CN CN201110331263.7A patent/CN103088790B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09217332A (en) * | 1996-02-09 | 1997-08-19 | Hitachi Ltd | Garbage-proof equipment for drainage system |
| CN1206058A (en) * | 1997-07-18 | 1999-01-27 | 胡鸣群 | Water drainage method and belt drainage component used therein |
| JP2001329520A (en) * | 2000-05-22 | 2001-11-30 | Ishikawajima Harima Heavy Ind Co Ltd | Tailrace facilities and discharge method |
| CN201025228Y (en) * | 2007-04-10 | 2008-02-20 | 李电学 | A device for power generation based on recycling water |
| CN101775790A (en) * | 2010-01-11 | 2010-07-14 | 广东省电力设计研究院 | Arrangement structure of circulating water taking and draining structure of power plant |
| CN201952835U (en) * | 2010-11-19 | 2011-08-31 | 浙江省电力设计院 | Water inlet pipe and water outlet pipe duct superposition arrangement structure for circulation water of power plant |
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| Publication number | Publication date |
|---|---|
| CN103088790A (en) | 2013-05-08 |
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Address after: 450007 Zhengzhou Zhongyuan Road, Henan, No. 212 Patentee after: China Electric Power Construction Group Henan electric survey and Design Institute Co., Ltd. Address before: 450007 Zhengzhou Zhongyuan Road, Henan, No. 212 Patentee before: Hennan Electric Power Survey & Design Institute |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150701 Termination date: 20191027 |