CN103953015B - The alternate source of hydraulic turbine main shaft sealing and construction method thereof - Google Patents
The alternate source of hydraulic turbine main shaft sealing and construction method thereof Download PDFInfo
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- CN103953015B CN103953015B CN201410217458.2A CN201410217458A CN103953015B CN 103953015 B CN103953015 B CN 103953015B CN 201410217458 A CN201410217458 A CN 201410217458A CN 103953015 B CN103953015 B CN 103953015B
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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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The present invention relates to the alternate source of a kind of hydraulic turbine main shaft sealing and construction method thereof, described alternate source includes intake front pool, feed cistern and downflow weir; Downflow weir is arranged in the coombe on hillside and water is intercepted and forms intake front pool in its front, and feed cistern is arranged on the hillside below intake front pool, and hydraulic turbine main shaft sealing is positioned at below feed cistern; Being provided with intake pipe between intake front pool and feed cistern, one end of intake pipe is through the water intaking of downflow weir body, and the other end connects feed cistern and the water in intake front pool is introduced feed cistern; First side of feed cistern is provided with outlet pipe, and outlet pipe is connected to hydraulic turbine main shaft sealing, and the water in feed cistern flows into hydraulic turbine main shaft sealing by outlet pipe, and outlet pipe is provided with out Water gate valve. The method have the characteristics that the Cistern Design that During Initial Stage Construction is built to be that alternate source is repeated utilizing, reduce cost and easy to maintenance.
Description
Technical field
The present invention relates to Hydropower Project feedwater field, particularly to alternate source and the construction method thereof of a kind of hydraulic turbine main shaft sealing.
Background technology
In Hydropower Project, hydraulic turbine main shaft sealing is to ensure that unit and the important device of Power Plant safety in production, and its effect is to prevent the pressure water between top cover and runner from flowing out from the gap between main shaft and top cover.
Generally, the main way of supplying water of the main shaft seal taked in power station at home takes from penstock or reservoir area, upstream for its required water supply, is supplied to unit through water purifier filtration and uses after water intaking. But, when flood season in rainy season, the sediment charge at water source, reservoir area is higher, or it sometimes appear that water strainer fault, in order to avoid above-mentioned factor affects, mostly adopts newly-built a set of standby water system on the basis of main way of supplying water in current Hydropower Project. Alternate source adopts newly-built head-tank mostly, and is equipped with special water intake pumping station and automatic control system, and costly, corollary equipment is more in construction investment, and operation maintenance amount is big.
It addition, build period in power station, for the convenience of engineering construction water intaking, unit in charge of construction needs to build water supply pool. The water supply pool that general unit in charge of construction builds is interim easy pond, can pass into disuse after construction terminates.
In sum, it is provided that the alternate source of a kind of hydraulic turbine main shaft sealing less costly and easy to maintenance and construction method thereof, those skilled in the art's problem demanding prompt solution is become.
The information being disclosed in this background of invention technology segment is merely intended to deepen the understanding of the general background technology to the present invention, and is not construed as admitting or imply in any form that this information structure is for prior art known in those skilled in the art.
Summary of the invention
For solving the problems referred to above, the present invention provides the alternate source of a kind of hydraulic turbine main shaft sealing, and it utilizes the pond that the construction time that During Initial Stage Construction builds supplies water to supply water as alternate source.
Present invention also offers the construction method of the alternate source of a kind of hydraulic turbine main shaft sealing.
In order to achieve the above object, the present invention provides the alternate source of a kind of hydraulic turbine main shaft sealing, and the alternate source of described hydraulic turbine main shaft sealing includes intake front pool, feed cistern and downflow weir; Described downflow weir is arranged in the coombe on hillside and the water in coombe is intercepted, described intake front pool is formed in the front of described downflow weir, described feed cistern is arranged on described hillside, described intake front pool is positioned at above described feed cistern, and described hydraulic turbine main shaft sealing is positioned at below described feed cistern; It is provided with intake pipe between described intake front pool and described feed cistern, the described downflow weir of one end traverse of described intake pipe, the other end of described intake pipe is connected to described feed cistern, and the water in described intake front pool can rely on gravity to automatically flow in described feed cistern by described intake pipe; First side of described feed cistern is provided with outlet pipe, described outlet pipe is connected to described hydraulic turbine main shaft sealing, water in described feed cistern can rely on gravity to automatically flow into described hydraulic turbine main shaft sealing by described outlet pipe, and described outlet pipe is provided with out Water gate valve.
Preferably, the normal throw between described intake front pool and described feed cistern is at least 20m; Normal throw between described hydraulic turbine main shaft sealing and described feed cistern is at least 40m.
Preferably, described outlet pipe is 100mm to the distance bottom described feed cistern; The diameter of described outlet pipe is 100mm.
Preferably, described intake pipe is provided with water intaking gate valve; Described intake pipe is 200mm to the distance bottom described downflow weir; The diameter of described intake pipe is 100mm.
Preferably, the 3rd parallel with described second side on described feed cistern side also passes and is provided with overflow pipe and blowdown blow-down pipe; Described blowdown blow-down pipe is provided with blowoff gate valve.
Preferably, described overflow pipe is 50mm to the distance at described feed cistern top; Bottom the contiguous described feed cistern of described blowdown blow-down pipe; The diameter of described overflow pipe is 100mm; The diameter of described blowdown blow-down pipe is 150mm.
Preferably, the total measurement (volume) of described feed cistern is 500m3��
The present invention also provides for a kind of construction method, and for building the alternate source of above-mentioned hydraulic turbine main shaft sealing, described construction method includes:
A) during Hydropower Station Construction, the coombe on hillside arranging downflow weir, intercepting the water in coombe thus forming intake front pool;
B) on hillside and be positioned at the lower section place of described intake front pool permanent feed cistern is set, and intake pipe is set between described intake front pool and described feed cistern;
C) in powerhouse of hydropower station and be positioned at the lower section place of described feed cistern hydraulic turbine main shaft sealing is set;
D) arranging outlet pipe on described feed cistern, described outlet pipe is fetched water from feed cistern and is carried out the construction in power station, arranges out Water gate valve on described outlet pipe, by going out Water gate valve described in folding, described outlet pipe is controlled;
E), after terminating Hydropower Station Construction, the water inlet of the outlet pipe of described feed cistern with described hydraulic turbine main shaft sealing is connected, makes described feed cistern become the alternate source of hydraulic turbine main shaft sealing.
Preferably, described step B) in also include: water intaking gate valve is set on described intake pipe, by gate valve of fetching water described in folding, described intake pipe is controlled.
Preferably, described step D) in also include: overflow pipe and blowdown blow-down pipe are set on described feed cistern; Described blowdown blow-down pipe arranges blowoff gate valve, by blowoff gate valve described in folding, described blowdown blow-down pipe is controlled.
The invention has the beneficial effects as follows: hydraulic turbine main shaft sealing is supplied water by the pond of the water supply for construction that the present invention utilizes During Initial Stage Construction to build as the alternate source of hydraulic turbine main shaft sealing, avoid the repeated construction in engineering construction, change and conventional hydroelectric station design is additionally built the head-tank mentality of designing as alternate source, save engineering construction investment cost, and be easy to later maintenance;Further, owing to power station is in construction and use procedure subsequently, same feed cistern is used, therefore to decreasing the destruction to environment.
Accompanying drawing explanation
Fig. 1 is the plan view from above of the alternate source of the hydraulic turbine main shaft sealing of the present invention.
Fig. 2 is the profile along Fig. 1 taken along line C-C.
Fig. 3 is the profile along Fig. 1 taken along line B-B.
Fig. 4 is along Fig. 1 hatching A-A profile cut open.
Fig. 5 is the construction method flow chart of the present invention.
Critical piece symbol description:
1 intake pipe
2 water intaking gate valves
3 outlet pipes
4 overflow pipes
5 blowdown blow-down pipes
6 downflow weirs
7 feed cisterns
8 blowoff gate valves
9 go out Water gate valve
10 intake front pools
S1 the first side
S2 the second side
S3 the 3rd side
S4 the 4th side.
Detailed description of the invention
Elaborate a lot of detail in the following description so that fully understanding the present invention. But the present invention can implement being much different from alternate manner described here, and those skilled in the art can do similar popularization when without prejudice to intension of the present invention, therefore the present invention is by the restriction of following public specific embodiment.
Below, in conjunction with accompanying drawing, specific embodiments of the invention are described. Refer in (direction of unidirectional arrow instruction water flowing bigger in figure) shown in Fig. 1 to Fig. 4, the present invention provides the alternate source of a kind of hydraulic turbine main shaft sealing, and it supplies water as alternate source mainly by the pond that the construction time that During Initial Stage Construction is built supplies water.
The alternate source of described hydraulic turbine main shaft sealing includes intake front pool 10, feed cistern 7 and downflow weir 6, downflow weir 6 is built in coombe, water in coombe is intercepted thus forming the water-retention of certain volume, the water-retention of a described constant volume then forms described intake front pool 10, feed cistern 7 is positioned on hillside, described intake front pool 10 is positioned at (namely downflow weir 6 also is located at above feed cistern 7) above described feed cistern 7, and described hydraulic turbine main shaft sealing is arranged in the Factory Building in power station and is positioned at below described feed cistern 7.
Described feed cistern 7 is provided with outlet pipe 3 on first side S1, it can be connected to main shaft seal and be supplied by the water in feed cistern 7, water in described feed cistern 7 can rely on gravity to pass through described outlet pipe 3 and automatically flow into described hydraulic turbine main shaft sealing, the quantity of water pipe can be designed as required, the present embodiment is two outlet pipes 3, each outlet pipe 3 is both provided with out Water gate valve 9, controls the current in outlet pipe 3 by going out the folding of Water gate valve 9.
It is provided with intake pipe 1 between described intake front pool 10 and described feed cistern 7, one end traverse downflow weir 6 of intake pipe 1, and the other end is connected with feed cistern 7 fluid communication ground, in the present embodiment, this other end is disposed on above described feed cistern 7 its S2 place, the second side contiguous vertically described feed cistern 7 (do not pass through pipeline connection but be suspended directly from the top in pond), it is also possible to be connected with feed cistern 7 either directly through pipeline. Water in described intake front pool 10 can rely on gravity to pass through described intake pipe 1 and automatically flow in described feed cistern 7, intake pipe 1 is additionally provided with water intaking gate valve 2, controls the current in intake pipe 1 by folding water intaking gate valve 2.
On described feed cistern 7 vertical with described first side S1 and be provided with overflow pipe 4 and blowdown blow-down pipe 5 with the second parallel the 3rd relative side S3 of side S2 passes, blowdown blow-down pipe 5 is also equipped with blowoff gate valve 8 and operates with control of sewage disposal.
Below the concrete structural design main points of the alternate source of the present invention are illustrated.
The volume of feed cistern 7 needs to be designed previously according to requirement of engineering. In the present embodiment, the alternate source of hydraulic turbine main shaft sealing needs to meet the water supply needs that three set main shafts seal, thus described feed cistern 7 total measurement (volume) is designed as 500m3, its length L, width B, height H and sidewall thickness D all can be designed according to actual terrain environment, as long as ensureing that total measurement (volume) is at 500m3Left and right, is designed as in the present embodiment: length L is 25m, and width B is 10m, and height H is 2m, and the sidewall thickness D of feed cistern 7 is 0.2m. If under different water conservancy environment, it is necessary to meet the water supply needs that more set main shaft seals, then should increase total measurement (volume) when feed cistern 7 designs accordingly, and further design every sizes such as the length required for pond, width and height accordingly.
Downflow weir 6 is built in coombe, water in coombe is intercepted thus forming the water-retention of certain volume, its water yield that can intercept can be designed according to actual environment, the water-retention of a described constant volume then forms intake front pool 10, namely water source obtains from which, in the present embodiment, described downflow weir 6 intercepts the total measurement (volume) of the intake front pool 10 formed and is designed as 10m3, and the height of downflow weir 6 can be designed according to actual coombe environment, for instance it is 0.8m-1.5m, the present embodiment is 1m.
The quantity of outlet pipe 3 can be arranged according to actual needs, it it is such as 2-4, in conjunction with shown in Fig. 1 and 4, the present embodiment is provided with two outlet pipes 3, described outlet pipe 3 passes on the first side S1 being arranged at feed cistern 7, can also according to project situation be arranged at on the first parallel the 4th relative side S4 of side S1, and the distance of outlet pipe 3 position to the bottom of feed cistern 7 that passes feed cistern 7 is d3, it can be designed according to actual environment, such as, d3 is 80mm-120mm, the present embodiment is designed as 100mm, the diameter of outlet pipe 3 can also design according to correlation engineering situation, it is such as 80mm-120mm, the present invention is designed as 100mm, outlet pipe 3 is connected to the water inlet of main shaft seal.
In conjunction with shown in Fig. 1 and Fig. 2, traverse downflow weir 6 weir, one end body of intake pipe 1, and the position that intake pipe 1 passes is d1 to downflow weir 6 distance from bottom, it can be designed according to actual environment, for instance, d1 is 150mm-250mm, the present embodiment is designed as 200mm, the diameter of intake pipe 1 then can design according to correlation engineering situation, for instance is 80mm-120mm, and in the present embodiment, the diameter design of intake pipe 1 is 100mm.
In conjunction with shown in Fig. 1 and Fig. 3, blowdown blow-down pipe 5 passes on the 3rd side S3 being arranged at feed cistern 7, and blowdown blow-down pipe 5 pass feed cistern 7 be positioned next to bottom feed cistern 7, the diameter of blowdown blow-down pipe 5 can design according to correlation engineering situation, it is such as 100mm-250mm, the present embodiment is designed as 150mm, and blowdown blow-down pipe 5 is provided with blowoff gate valve 8, by the operation of blowdown emptying is controlled by the folding of blowoff gate valve 8. Overflow pipe 4 equally also passes and is arranged on the 3rd side S3, and overflow pipe 4 to pass the position of feed cistern 7 be d2 to feed cistern 7 distance from top, it can be designed according to actual environment, such as, d2 is 30mm-70mm, is designed as d2=50mm in the present embodiment, and the diameter of overflow pipe 4 can design according to correlation engineering situation, it is such as 80mm-120mm, the present invention is designed as 100mm.
The present invention also provides for the construction method of the alternate source of a kind of described hydraulic turbine main shaft sealing, below the construction method of the present invention is illustrated, and builds this alternate source and includes following key step:
A) during Hydropower Station Construction, the coombe on hillside arranging downflow weir, intercepting the water in coombe thus forming intake front pool.
At the engineering construction initial stage, intake front pool 10 is arranged on the position higher than feed cistern 7 (namely downflow weir 6 is built on the position higher than feed cistern 7), preferably, the coombe in the streams, mountain area of at least 20m more than higher than feed cistern 7 arranges described downflow weir 6, namely is designed to be at least 20m by the normal throw between intake front pool 10 and feed cistern 7 when building.
B) on hillside and be positioned at the lower section place of described intake front pool permanent feed cistern is set, and intake pipe is set between described intake front pool and described feed cistern.
Feed cistern 7 is designed as permanent feed cistern, so-called permanent feed cistern refers to that total designs according to permanent hydraulic structures 50-100 in service life, all adopt monolithic reinforced concrete structure, and do not discarded after having built, but retained and the use of other purposes can be done. Build according to this structure standard and the above-mentioned volume requirement to feed cistern 7.
It addition, at this step B) in also need on described intake pipe 1, arrange water intaking gate valve 2, when opening water intaking gate valve 2, the water in described intake front pool flows in feed cistern 7.
C) in powerhouse of hydropower station and be positioned at the lower section place of described feed cistern hydraulic turbine main shaft sealing is set;
Feed cistern 7 is arranged on the hillside of more than 40m higher than the use water position of hydraulic turbine main shaft sealing, namely is designed to be at least 40m by the normal throw of feed cistern 7 with hydraulic turbine main shaft sealing when building.
D) arranging outlet pipe on described feed cistern, described outlet pipe is fetched water from feed cistern and is carried out the construction in power station, arranges out Water gate valve on described outlet pipe, by going out Water gate valve described in folding, described outlet pipe is controlled;
During Hydropower Station Construction, the position of outlet pipe 3 can be set as needed in pond different parts, and on described outlet pipe 3, Water gate valve 9 is set out, during construction, opening out Water gate valve 9, the water in feed cistern 7 flows out from outlet pipe 3, and supplying water as the normal construction time uses, items of equipment required during to construction and operation are supplied water, and it can be carried out required transformation after having constructed.
It addition, this step D) in also need on feed cistern 7, arrange overflow pipe 4 and blowdown blow-down pipe 5, and blowoff gate valve 8 is set on blowdown blow-down pipe 5, when opening blowoff gate valve 8, it is possible to the sewage in feed cistern 7 is carried out emptying cleaning.
E), after terminating Hydropower Station Construction, the water inlet of the outlet pipe of described feed cistern with described hydraulic turbine main shaft sealing is connected, makes described feed cistern become the alternate source of hydraulic turbine main shaft sealing.
Outlet pipe 3 is transformed, is connected to the water inlet of main shaft seal after terminating by construction, and when opening out Water gate valve 9, the water in described feed cistern 7 flows out from outlet pipe 3 and is flowed in described hydraulic turbine main shaft sealing.
Below the use procedure of the present invention is further described. The water source that the present invention takes is from the stream in the coombe of mountain area, and downflow weir 6 is arranged in this coombe, is intercepted by current, forms the water-retention of certain volume, namely forms intake front pool 10, and the volume of water-retention is determined by the environment of coombe, is 10m in the present embodiment3, rainy season or flood season at a time when using due to the alternate source of the present invention, when water yield abundance, the unnecessary water yield is by from face, the weir overflow of downflow weir 6 to river valley, downstream, thus ensureing can keep all the time in intake front pool 10 10m3The reservoir storage of left and right, opens water intaking gate valve 2, it is necessary to the water taken then is flowed into from intake pipe 1 in the feed cistern 7 of lower section and carries out water storage and water supply.Intake pipe 1 passes the middle and lower part being arranged at downflow weir 6 weir body, and enters the porch of intake pipe 1 at water and be provided with and block dirty grid (not shown), can effectively prevent the impurity such as silt, leaves from entering intake pipe 1. Downflow weir 6 to feed cistern 7 keeps certain normal throw, ensure that water source can be smoothly through intake pipe 1 and flow automatically in feed cistern 7, and store in feed cistern 7, during use, open out Water gate valve 9, water in feed cistern 7 flows out the water inlet flowing to main shaft seal again from outlet pipe 3, and the mouth of pipe front end of one end being connected to main shaft seal of outlet pipe 3 is provided with filter screen (not shown), it is ensured that enter into the quality of water in main shaft seal.
Blowdown blow-down pipe 5 and blowoff gate valve 8 then use as the blowdown emptying system in pond, close blowoff gate valve 8, then open blowoff gate valve 8 during blowdown, discharged by blowdown blow-down pipe 5 by sewage from feed cistern 7 during feed cistern 7 inner storing water; Overflow pipe 4 then can make feed cistern 7 keep certain water level, in order to when water level exceedes restriction, and unnecessary water can overflow discharge from overflow pipe 4 rapidly.
In detail below by calculating to illustrate how the present invention meets water requirements.
The use time of the alternate source of the hydraulic turbine main shaft sealing of the present invention, it was sufficient that pond intake carrys out the water yield in rainy season. According to domestic project design experiences, the water consumption of Large Hydroelectric Set main shaft seal is 5��7m3/ h, is maximum 7m according to water consumption herein3The unit altogether installed in/h and power station is three calculating, and three units share 21m per hour3The water yield, even if when upstream does not have water, volume is 500m3Pond remain to meet three units and at least about can persistently supply water to main shaft seal in 23 hours, then when the main way of supplying water that spindle of hydroelectric generator set seals needed to overhaul in the short time, still have the alternate source of abundance to supply water.
It is calculated further illustrating to actual output hourly and water consumption below.
Intake pipe 1 diameter between feed cistern 7 to downflow weir 6 is 100mm (being converted into 0.1m during calculating), and between downflow weir 6 and feed cistern 7, drop is 20m, and intake pressure is 0.02Mpa, and water flow velocity in pipe is 1��3m/s, takes minimum flow velocity 1m/s. Output hourly is calculated by below equation: water supply flow=�� * (water pipe diameter/2) per hour2* flow velocity (formula 1), then water supply flow is 28.27m per hour3, more than three unit total water consumption 21m3��
Feed cistern 7 is 40m apart from the position normal throw of Turbines room main shaft seal water, and the diameter of outlet pipe 3 is 100mm, water flow velocity in pipe is 1��3m/s, takes minimum flow velocity 1m/s, through above-mentioned formula 1 same way calculate known water supply flow per hour be 28.27m3, more than three unit total water consumption 21m3��
In summary, the alternate source of the hydraulic turbine main shaft sealing of the present invention can meet the water supply needs that three set main shafts seal completely, time specifically used, the volume in pond can be designed as required in the construction time and the position of outlet pipe is set at pond different parts, the pond supplied water as the normal construction time during construction uses, items of equipment required during to construction and operation are supplied water, and can block after the construction time terminates, it is also possible to it is transformed into the intake pipe of main shaft seal thus becoming the alternate source of main shaft seal. If it addition, need other water systems for power plant building to provide standby water supply, it is also possible to outlet pipe is connected to other water systems thus becoming their alternate source.
Being illustrative for property of above-described embodiment illustrates principles of the invention and effect thereof, but the present invention is not limited to above-mentioned embodiment.Above-described embodiment all under the spirit and category of the present invention, in claims, can be modified by those skilled in the art. Therefore protection scope of the present invention, should cover such as claims of the present invention.
Claims (10)
1. the alternate source of a hydraulic turbine main shaft sealing, it is characterised in that: the alternate source of described hydraulic turbine main shaft sealing includes intake front pool, feed cistern and downflow weir;
Described downflow weir is arranged in the coombe on hillside and the water in coombe is intercepted, described intake front pool is formed in the front of described downflow weir, described feed cistern is arranged on described hillside, described intake front pool is positioned at above described feed cistern, and described hydraulic turbine main shaft sealing is positioned at below described feed cistern;
It is provided with intake pipe between described intake front pool and described feed cistern, the described downflow weir of one end traverse of described intake pipe, the other end of described intake pipe is connected to described feed cistern, and the water in described intake front pool can rely on gravity to automatically flow in described feed cistern by described intake pipe;
First side of described feed cistern is provided with outlet pipe, described outlet pipe is connected to described hydraulic turbine main shaft sealing, water in described feed cistern can rely on gravity to automatically flow into described hydraulic turbine main shaft sealing by described outlet pipe, and described outlet pipe is provided with out Water gate valve.
2. the alternate source of hydraulic turbine main shaft sealing according to claim 1, it is characterised in that: the normal throw between described intake front pool and described feed cistern is at least 20m; Normal throw between described hydraulic turbine main shaft sealing and described feed cistern is at least 40m.
3. the alternate source of hydraulic turbine main shaft sealing according to claim 2, it is characterised in that: described outlet pipe is 100mm to the distance bottom described feed cistern; The diameter of described outlet pipe is 100mm.
4. the alternate source of hydraulic turbine main shaft sealing according to claim 3, it is characterised in that: described intake pipe is provided with water intaking gate valve; Described intake pipe is 200mm to the distance bottom described downflow weir; The diameter of described intake pipe is 100mm.
5. the alternate source of hydraulic turbine main shaft sealing according to claim 4, it is characterised in that: the 3rd side vertical with described first side on described feed cistern is additionally provided with overflow pipe and blowdown blow-down pipe; Described blowdown blow-down pipe is provided with blowoff gate valve.
6. the alternate source of hydraulic turbine main shaft sealing according to claim 5, it is characterised in that: described overflow pipe is 50mm to the distance at described feed cistern top; Bottom the contiguous described feed cistern of described blowdown blow-down pipe; The diameter of described overflow pipe is 100mm; The diameter of described blowdown blow-down pipe is 150mm.
7. the alternate source of hydraulic turbine main shaft sealing according to claim 6, it is characterised in that: the total measurement (volume) of described feed cistern is 500m3��
8. a construction method, for building the alternate source of the hydraulic turbine main shaft sealing according to any one of claim 1 to 7, described construction method includes:
A) during Hydropower Station Construction, the coombe on hillside arranging downflow weir, intercepting the water in coombe thus forming intake front pool;
B) on hillside and be positioned at the lower section place of described intake front pool permanent feed cistern is set, and intake pipe is set between described intake front pool and described feed cistern;
C) in powerhouse of hydropower station and be positioned at the lower section place of described feed cistern hydraulic turbine main shaft sealing is set;
D) arranging outlet pipe on described feed cistern, described outlet pipe is fetched water from feed cistern and is carried out the construction in power station, arranges out Water gate valve on described outlet pipe, by going out Water gate valve described in folding, described outlet pipe is controlled;
E), after terminating Hydropower Station Construction, the water inlet of the outlet pipe of described feed cistern with described hydraulic turbine main shaft sealing is connected, makes described feed cistern become the alternate source of hydraulic turbine main shaft sealing.
9. construction method according to claim 8, it is characterised in that: also include in step B): water intaking gate valve is set on described intake pipe, by gate valve of fetching water described in folding, described intake pipe is controlled.
10. construction method according to claim 9, it is characterised in that: also include in step D): overflow pipe and blowdown blow-down pipe are set on described feed cistern; Described blowdown blow-down pipe arranges blowoff gate valve, by blowoff gate valve described in folding, described blowdown blow-down pipe is controlled.
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| CN201547238U (en) * | 2009-11-12 | 2010-08-11 | 江西泰豪特种电机有限公司 | Hydraulic pressure sealing device of rotating spindle |
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| CN203866795U (en) * | 2014-05-22 | 2014-10-08 | 中国长江三峡集团公司 | Standby water source of water turbine main shaft seal |
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| JPH08209756A (en) * | 1995-02-06 | 1996-08-13 | Kosuke Fujiwara | Water supply and storage system bringing out water storage function on emergency and water supply and storage system unit and construction method of the system |
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|---|---|---|---|---|
| CN201547238U (en) * | 2009-11-12 | 2010-08-11 | 江西泰豪特种电机有限公司 | Hydraulic pressure sealing device of rotating spindle |
| CN103362721A (en) * | 2013-07-25 | 2013-10-23 | 归杏花 | Main shaft sealing device for water turbine |
| CN203866795U (en) * | 2014-05-22 | 2014-10-08 | 中国长江三峡集团公司 | Standby water source of water turbine main shaft seal |
Non-Patent Citations (1)
| Title |
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| 莲麓一级水电站技术供水系统设计;石少华;《甘肃水泥水电技术》;20110630;第47卷(第6期);32-34 * |
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