CN203866795U - Standby water source of water turbine main shaft seal - Google Patents
Standby water source of water turbine main shaft seal Download PDFInfo
- Publication number
- CN203866795U CN203866795U CN201420264948.3U CN201420264948U CN203866795U CN 203866795 U CN203866795 U CN 203866795U CN 201420264948 U CN201420264948 U CN 201420264948U CN 203866795 U CN203866795 U CN 203866795U
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- Prior art keywords
- water
- feed cistern
- pipe
- main shaft
- turbine main
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- Withdrawn - After Issue
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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
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- Hydraulic Turbines (AREA)
Abstract
The utility model relates to a standby water source of a water turbine main shaft seal. The standby water source comprises a water taking front pond, a water supply pond and an overflow weir. The overflow weir is arranged in a gully hillside and stops water to form the water taking front pond in front, the water supply pond is arranged on the hillside on the lower portion of the water taking front pond, the water turbine main shaft seal is located under the water supply pond, a water taking pipe is arranged between the water taking front pond and the water supply pond, one end of the water taking pipe penetrates through the overflow weir for water taking, the other end of the water taking pipe is connected with the water supply pond to lead water in the water taking front pond into the water supply pond, the first side face of the water supply pond is provided with a water outlet pipe, the water outlet pipe is connected with the water turbine main shaft seal, water in the water supply pond flows into the water turbine main shaft seal through the water outlet pipe, and the water outlet pipe is provided with a water outlet sluice valve. The standby water source is characterized in that a water pond built in the early stage of construction is designed to be the standby water source for reuse, cost is lowered, and maintenance is convenient to achieve.
Description
Technical field
The utility model relates to Hydropower Project feedwater field, particularly a kind of alternate source of hydraulic turbine main shaft sealing.
Background technology
In Hydropower Project, hydraulic turbine main shaft sealing is the important device that guarantees unit and Power Plant safety in production, and its effect is to prevent that the pressure water between top cover and runner from flowing out from the gap between main shaft and top cover.
Conventionally, the main way of supplying water of the shaft seal of taking in power station is at home taken from penstock or reservoir area, upstream for its required water supply, and water intaking offers unit by water purifier filtration and uses.Yet when flood season in rainy season, the sediment charge at water source, reservoir area is higher, or there is sometimes water strainer fault, for fear of above-mentioned factor impact, in current Hydropower Project, mostly adopt newly-built a set of standby water system on the basis of main way of supplying water.Alternate source adopts newly-built head-tank mostly, and is equipped with special water intake pumping station and automatic control system, and construction investment expense is higher, and corollary equipment is more, and operation maintenance amount is large.
In addition, during power station is built, for the convenience of engineering construction water intaking, unit in charge of construction need to build water supply pool.The water supply pool that general unit in charge of construction builds, for interim easy pond, can be passed into disuse after construction finishes.
In sum, provide the alternate source of a kind of cost hydraulic turbine main shaft sealing lower and easy to maintenance, become those skilled in the art's problem demanding prompt solution.
The information that is disclosed in this utility model background technology part is only intended to deepen the understanding to general background technology of the present utility model, and should not be regarded as admitting or imply that in any form this information structure has been prior art known in those skilled in the art.
Utility model content
For addressing the above problem, the utility model provides a kind of alternate source of hydraulic turbine main shaft sealing, and it utilizes the pond that construction period that During Initial Stage Construction builds supplies water to supply water as alternate source.
In order to achieve the above object, the utility model provides a kind of alternate source of hydraulic turbine main shaft sealing, and the alternate source of described hydraulic turbine main shaft sealing comprises intake front pool, feed cistern and overflow weir; Described overflow weir is arranged in the coombe on hillside and the water in coombe is tackled, in the place ahead of described overflow weir, form described intake front pool, described feed cistern is arranged on described hillside, described intake front pool is positioned at described feed cistern top, and described hydraulic turbine main shaft sealing is positioned at described feed cistern below; Between described intake front pool and described feed cistern, be provided with intake pipe, one end of described intake pipe is through described overflow weir, the other end of described intake pipe is connected in described feed cistern, and the water in described intake front pool can rely on gravity to pass through in the described feed cistern of the automatic inflow of described intake pipe; On the first side of described feed cistern, be 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 pass through described outlet pipe and automatically flow into described hydraulic turbine main shaft sealing, on 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 to the distance of described feed cistern bottom is 100mm; The diameter of described outlet pipe is 100mm.
Preferably, on described intake pipe, be provided with water intaking gate valve; Described intake pipe to the distance of described overflow weir bottom is 200mm; The diameter of described intake pipe is 100mm.
Preferably, on described feed cistern with on the 3rd side of described the second parallel sided, also pass and be provided with bleed off pipe and blowdown blow-down pipe; On described blowdown blow-down pipe, be provided with blowoff gate valve.
Preferably, described bleed off pipe to the distance at described feed cistern top is 50mm; The contiguous described feed cistern of described blowdown blow-down pipe bottom; The diameter of described bleed off pipe is 100mm; The diameter of described blowdown blow-down pipe is 150mm.
Preferably, the total measurement (volume) of described feed cistern is 500m
3.
The beneficial effects of the utility model are: supply water to hydraulic turbine main shaft sealing as the alternate source of hydraulic turbine main shaft sealing in the pond that the utility model utilizes the water supply for construction that During Initial Stage Construction builds, avoid the repeated construction in engineering construction, changed in the past and built in addition head-tank as the mentality of designing of alternate source in hydroelectric station design, save engineering construction investment cost, and be convenient to later maintenance; And, because power station is in construction and use procedure subsequently, use same feed cistern, therefore to having reduced the destruction to environment.
Accompanying drawing explanation
Fig. 1 is the plan view from above of the alternate source of hydraulic turbine main shaft sealing of the present utility model.
The sectional drawing of Fig. 2 for cutting open along Fig. 1 hatching C-C.
The sectional drawing of Fig. 3 for cutting open along Fig. 1 hatching B-B.
The sectional drawing of Fig. 4 for cutting open along Fig. 1 hatching A-A.
Fig. 5 is construction method flow chart of the present utility model.
Critical piece symbol description:
1 intake pipe
2 water intaking gate valves
3 outlet pipes
4 bleed off pipes
5 blowdown blow-down pipes
6 overflow 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.
The specific embodiment
A lot of details have been set forth in the following description so that fully understand the utility model.But the utility model can be implemented to be much different from alternate manner described here, those skilled in the art can do similar popularization without prejudice to the utility model intension in the situation that, so the utility model is not subject to the restriction of following public specific embodiment.
Below, by reference to the accompanying drawings specific embodiment of the utility model is described.Refer to (direction of larger unidirectional arrow indication water flow in figure) shown in Fig. 1 to Fig. 4, the utility model provides a kind of alternate source of hydraulic turbine main shaft sealing, and it is mainly to utilize the pond that construction period that During Initial Stage Construction builds supplies water to supply water as alternate source.
The alternate source of described hydraulic turbine main shaft sealing comprises intake front pool 10, feed cistern 7 and overflow weir 6, overflow weir 6 is built in coombe, thereby the water in coombe is tackled to the retaining that forms certain volume, the retaining of a described constant volume forms described intake front pool 10, feed cistern 7 is positioned on hillside, described intake front pool 10 is positioned at described feed cistern 7 tops (being that overflow weir 6 is also positioned at feed cistern 7 tops), and described hydraulic turbine main shaft sealing is arranged in the factory building in power station and is positioned at described feed cistern 7 belows.
On described feed cistern 7, on the first side S1, be provided with outlet pipe 3, it can be connected to shaft seal and the water in feed cistern 7 is supplied, 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, can design as required the quantity of water pipe, in the present embodiment, be two outlet pipes 3, on each outlet pipe 3, be provided with out Water gate valve 9, by going out the folding of Water gate valve 9, control the current in outlet pipe 3.
Between described intake front pool 10 and described feed cistern 7, be provided with intake pipe 1, one end of intake pipe 1 is through overflow weir 6, and the other end is connected with feed cistern 7 fluid-phase earthings, in the present embodiment, this other end is to be arranged at contiguous its S2 places, the second side, described feed cistern 7 tops also vertically towards described feed cistern 7 (do not connect by pipeline but be directly suspended from the top in pond), also can directly by pipeline, be connected with feed cistern 7.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, is also provided with water intaking gate valve 2 on intake pipe 1, by the folding gate valve 2 of fetching water, controls the current in intake pipe 1.
Vertical with described the first side S1 and be provided with bleed off pipe 4 and blowdown blow-down pipe 5 with passing on parallel the 3rd relative side S3 of the second side S2 on described feed cistern 7, on blowdown blow-down pipe 5, be also provided with blowoff gate valve 8 and operate with control of sewage disposal.
Below the concrete structure design main points of alternate source of the present utility model are described.
The volume of feed cistern 7 needs according to requirement of engineering, to be designed in advance.In the present embodiment, the alternate source of hydraulic turbine main shaft sealing need to meet the water supply needs of three set main shaft sealings, thereby described feed cistern 7 total measurement (volume)s are designed to 500m
3, its length L, width B, height H and sidewall thickness D all can design according to actual terrain environment, as long as guarantee that total measurement (volume) is at 500m
3left and right, is designed 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, need to meet the more water supply needs of multicomputer shaft seal, the total measurement (volume) in the time of should corresponding increase feed cistern 7 design, and further design again accordingly every sizes such as the needed length in pond, width and height.
Overflow weir 6 is built in coombe, thereby the water in coombe is tackled to the retaining that forms certain volume, can design the water yield that it can be tackled according to actual environment, the retaining of a described constant volume forms intake front pool 10, be that water source is from wherein obtaining, in the present embodiment, the total measurement (volume) of the intake front pool 10 that described overflow weir 6 interceptions form is designed to 10m
3, and the height of overflow weir 6 can design according to actual coombe environment, for example, be 0.8m-1.5m, is 1m in the present embodiment.
The quantity of outlet pipe 3 can arrange according to actual needs, it is for example 2-4, shown in Fig. 1 and 4, in the present embodiment, be provided with two outlet pipes 3, described outlet pipe 3 passes on the first side S1 that is arranged at feed cistern 7, also can be arranged at on parallel the 4th relative side S4 of the first side S1 according to project situation, and the distance that outlet pipe 3 passes position to the bottom of feed cistern 7 of feed cistern 7 is d3, it can design according to actual environment, for example, d3 is 80mm-120mm, in the present embodiment, be designed to 100mm, the diameter of outlet pipe 3 also can design according to correlation engineering situation, for example 80mm-120mm, in the utility model, be designed to 100mm, outlet pipe 3 is connected to the water inlet of shaft seal.
Shown in Fig. 1 and Fig. 2, one end of intake pipe 1 is through overflow weir 6 weir bodies, and the position that intake pipe 1 passes to overflow weir 6 distances from bottom are d1, it can design according to actual environment, and for example, d1 is 150mm-250mm, in the present embodiment, be designed to 200mm, the diameter of intake pipe 1 can design according to correlation engineering situation, for example, be 80mm-120mm, and in the present embodiment, the diameter of intake pipe 1 is designed to 100mm.
Shown in Fig. 1 and Fig. 3, blowdown blow-down pipe 5 passes on the 3rd side S3 that is arranged at feed cistern 7, and blowdown blow-down pipe 5 passes next-door neighbour feed cistern 7 bottoms, position of feed cistern 7, the diameter of blowdown blow-down pipe 5 can design according to correlation engineering situation, for example 100mm-250mm, in the present embodiment, be designed to 150mm, and be provided with blowoff gate valve 8 on blowdown blow-down pipe 5, by the folding of blowoff gate valve 8 is controlled the operation of blowdown emptying.Bleed off pipe 4 equally also passes and is arranged on the 3rd side S3, and position to feed cistern 7 distance from tops that bleed off pipe 4 passes feed cistern 7 are d2, it can design according to actual environment, for example, d2 is 30mm-70mm, is designed to d2=50mm in the present embodiment, and the diameter of bleed off pipe 4 can design according to correlation engineering situation, be for example 80mm-120mm, in the utility model, be designed to 100mm.
Below construction method of the present utility model is described, builds this alternate source and comprise following key step:
A), during Hydropower Station Construction, in the coombe on hillside, overflow weir is set, thereby the water in interception coombe forms intake front pool.
At the engineering construction initial stage, intake front pool 10 is arranged at than (being that overflow weir 6 is built on than the higher position of feed cistern 7) on the higher position of feed cistern 7, preferably, at least in the coombe in streams, mountain area more than 20m, described overflow weir 6 being set than feed cistern 7 height, while also building, the normal throw between intake front pool 10 and feed cistern 7 is designed to be at least 20m.
B) on hillside and be positioned at described intake front pool below locate to arrange permanent feed cistern, and between described intake front pool and described feed cistern, intake pipe is set.
Feed cistern 7 is designed to permanent feed cistern, so-called permanent feed cistern refers to that total designs according to permanent hydraulic structures 50-100 in application life, all adopt monolithic reinforced concrete structure, and do not discarded after having built, but retained and can make other purposes and use.According to this structure standard and above-mentioned volume requirement to feed cistern 7, build.
In addition, at this step B) in water intaking gate valve 2 also need to be set on described intake pipe 1, while 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 described feed cistern below locate to arrange hydraulic turbine main shaft sealing.
Feed cistern 7 is arranged at than on the hillside more than high 40m in water position of hydraulic turbine main shaft sealing, while also building, feed cistern 7 and the normal throw of hydraulic turbine main shaft sealing is designed to be at least 40m.
D) on described feed cistern, set out water pipe, described outlet pipe is fetched water and is carried out the construction in power station from feed cistern, on described outlet pipe, sets out Water gate valve, by going out Water gate valve described in folding, described outlet pipe is controlled;
During Hydropower Station Construction, can at pond different parts, set out as required the position of water pipe 3, and set out Water gate valve 9 on described outlet pipe 3, during construction, open out Water gate valve 9, the water in feed cistern 7 flows out from outlet pipe 3, as the normal construction period, supplies water and uses, during to construction, required items of equipment and operation supplied water, and after having constructed, can carry out required transformation to it.
In addition, this step D) in, also bleed off pipe 4 and blowdown blow-down pipe 5 need to be set on feed cistern 7, and blowoff gate valve 8 is set on blowdown blow-down pipe 5, when opening blowoff gate valve 8, can carry out emptying cleaning to the sewage in feed cistern 7.
E) finish, after Hydropower Station Construction, the outlet pipe of described feed cistern to be connected with the water inlet of described hydraulic turbine main shaft sealing, make described feed cistern become the alternate source of hydraulic turbine main shaft sealing.
After construction finishes, outlet pipe 3 is transformed, be connected to the water inlet of shaft seal, while opening out Water gate valve 9, the water in described feed cistern 7 flows out and flow in described hydraulic turbine main shaft sealing from outlet pipe 3.
Below use procedure of the present utility model is further described.The water source that the utility model is got is from the stream in the coombe of mountain area, and overflow weir 6 is arranged in this coombe, by current interception, forms the retaining of certain volume, also forms intake front pool 10, and the volume of retaining is determined by the environment of coombe, is 10m in the present embodiment
3, due to rainy season or flood season at a time when alternate source use of the present utility model, when the water yield is sufficient, the unnecessary water yield flows to river valley, downstream by the weir face overflow from overflow weir 6, thereby guarantees can keep 10m all the time in intake front pool 10
3the water retention capacity of left and right, opens water intaking gate valve 2, in the feed cistern 7 below the water that need to get flow into from intake pipe 1, carries out water storage and water supply.Intake pipe 1 passes the middle and lower part that is arranged at overflow weir 6 weir bodies, and is provided with and blocks dirty grid (not shown) in the entrance that water enters intake pipe 1, can effectively prevent that the impurity such as silt, leaf from entering intake pipe 1.Overflow weir 6 to feed cistern 7 keeps certain normal throw, guarantee 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 that flows to again shaft seal from outlet pipe 3, and the mouth of pipe front end of one end that is connected to shaft seal of outlet pipe 3 is provided with filter screen (not shown), guarantees to enter into the quality of the water of shaft seal.
8 blowdown emptying systems as pond of blowdown blow-down pipe 5 and blowoff gate valve are used, and close blowoff gate valve 8 during feed cistern 7 inner storing water, open blowoff gate valve 8 during blowdown, and sewage is discharged from feed cistern 7 by blowdown blow-down pipe 5; 4 of bleed off pipes can make feed cistern 7 keep certain water level, so that water level surpasses while limiting, unnecessary water can overflow discharge from bleed off pipe 4 rapidly.
Lower mask body is by calculating with explanation the utility model how to meet water requirements.
The service time of the alternate source of hydraulic turbine main shaft sealing of the present utility model, it was sufficient that pond intake carrys out the water yield in rainy season.According to domestic project design experiences, the water supply volume of Large Hydroelectric Set shaft seal is 5～7m
3/ h is maximum value 7m according to water supply volume herein
3the unit of altogether installing in/h and power station is three calculating, three unit shared 21m per hour
3the water yield, even the in the situation that of there is no water in upstream, volume is 500m
3pond still can meet three units and supply water to shaft seal at least about continuing in 23 hours, when the main way of supplying water sealing when spindle of hydroelectric generator set need to overhaul in the short time, still have sufficient alternate source to supply water.
Below the output hourly of reality and water supply volume are calculated to further illustrate.
Feed cistern 7 is 100mm (being converted into 0.1m during calculating) to intake pipe 1 diameter between overflow weir 6, and between overflow weir 6 and feed cistern 7, drop is 20m, and intake pressure is 0.02Mpa, and the flow velocity of water in pipe is 1～3m/s, gets minimum flow velocity 1m/s.Output hourly is calculated by following formula: water supply flow=π * per hour (water pipe diameter/2) 2* flow velocity (formula 1), water supply flow per hour is 28.27m
3, be greater than three unit total water amount 21m
3.
Feed cistern 7 is 40m apart from the position normal throw of Turbines chamber shaft seal water, and the diameter of outlet pipe 3 is 100mm, the flow velocity of water in pipe is 1～3m/s, gets minimum flow velocity 1m/s, and through the same way of above-mentioned formula 1, calculating known water supply flow per hour is 28.27m
3, be greater than three unit total water amount 21m
3.
In summary, the alternate source of hydraulic turbine main shaft sealing of the present utility model can meet the water supply needs of three set main shaft sealings completely, during concrete use, in the construction period, can design as required the volume in pond and the position that sets out water pipe at pond different parts, the pond of supplying water as the normal construction period during construction is used, during to construction, required items of equipment and operation supplied water, and after the construction period finishes, can carry out shutoff, thereby the intake pipe that also can be transformed into shaft seal becomes the alternate source of shaft seal.In addition, if need to provide standby water supply for other water systems of power plant building, thereby also outlet pipe can be connected to the alternate source that other water systems become them.
Above-described embodiment is for illustrative principle of the present utility model and effect thereof, but the utility model is not limited to above-mentioned embodiment.Those skilled in the art all can, under spirit of the present utility model and category, in claim protection domain, modify to above-described embodiment.Therefore protection domain of the present utility model, should cover as claims of the present utility model.
Claims (7)
1. an alternate source for hydraulic turbine main shaft sealing, is characterized in that: the alternate source of described hydraulic turbine main shaft sealing comprises intake front pool, feed cistern and overflow weir;
Described overflow weir is arranged in the coombe on hillside and the water in coombe is tackled, in the place ahead of described overflow weir, form described intake front pool, described feed cistern is arranged on described hillside, described intake front pool is positioned at described feed cistern top, and described hydraulic turbine main shaft sealing is positioned at described feed cistern below;
Between described intake front pool and described feed cistern, be provided with intake pipe, one end of described intake pipe is through described overflow weir, the other end of described intake pipe is connected in described feed cistern, and the water in described intake front pool can rely on gravity to pass through in the described feed cistern of the automatic inflow of described intake pipe;
On the first side of described feed cistern, be 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 pass through described outlet pipe and automatically flow into described hydraulic turbine main shaft sealing, on described outlet pipe, is provided with out Water gate valve.
2. the alternate source of hydraulic turbine main shaft sealing according to claim 1, is characterized 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, is characterized in that: described outlet pipe to the distance of described feed cistern bottom is 100mm; The diameter of described outlet pipe is 100mm.
4. the alternate source of hydraulic turbine main shaft sealing according to claim 3, is characterized in that: on described intake pipe, be provided with water intaking gate valve; Described intake pipe to the distance of described overflow weir bottom is 200mm; The diameter of described intake pipe is 100mm.
5. the alternate source of hydraulic turbine main shaft sealing according to claim 4, is characterized in that: on described feed cistern with on the 3rd side of described the first lateral vertical, be also provided with bleed off pipe and blowdown blow-down pipe; On described blowdown blow-down pipe, be provided with blowoff gate valve.
6. the alternate source of hydraulic turbine main shaft sealing according to claim 5, is characterized in that: described bleed off pipe to the distance at described feed cistern top is 50mm; The contiguous described feed cistern of described blowdown blow-down pipe bottom; The diameter of described bleed off 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, is characterized in that: the total measurement (volume) of described feed cistern is 500m
3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264948.3U CN203866795U (en) | 2014-05-22 | 2014-05-22 | Standby water source of water turbine main shaft seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420264948.3U CN203866795U (en) | 2014-05-22 | 2014-05-22 | Standby water source of water turbine main shaft seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203866795U true CN203866795U (en) | 2014-10-08 |
Family
ID=51647765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420264948.3U Withdrawn - After Issue CN203866795U (en) | 2014-05-22 | 2014-05-22 | Standby water source of water turbine main shaft seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203866795U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953015A (en) * | 2014-05-22 | 2014-07-30 | 中国长江三峡集团公司 | Standby water source of water turbine main shaft seal and building method thereof |
| CN106968876A (en) * | 2017-05-19 | 2017-07-21 | 华能澜沧江水电股份有限公司糯扎渡水电厂 | A kind of turbine-generator units technical water supply control method |
-
2014
- 2014-05-22 CN CN201420264948.3U patent/CN203866795U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103953015A (en) * | 2014-05-22 | 2014-07-30 | 中国长江三峡集团公司 | Standby water source of water turbine main shaft seal and building method thereof |
| CN103953015B (en) * | 2014-05-22 | 2016-06-08 | 中国长江三峡集团公司 | The alternate source of hydraulic turbine main shaft sealing and construction method thereof |
| CN106968876A (en) * | 2017-05-19 | 2017-07-21 | 华能澜沧江水电股份有限公司糯扎渡水电厂 | A kind of turbine-generator units technical water supply control method |
| CN106968876B (en) * | 2017-05-19 | 2019-01-04 | 华能澜沧江水电股份有限公司糯扎渡水电厂 | A kind of turbine-generator units technical water supply control method |
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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: 20141008 Effective date of abandoning: 20160608 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |