CN107366266A - Water hammer pressure structure is prevented for the long diversion system of middle low water head - Google Patents
Water hammer pressure structure is prevented for the long diversion system of middle low water head Download PDFInfo
- Publication number
- CN107366266A CN107366266A CN201710817447.1A CN201710817447A CN107366266A CN 107366266 A CN107366266 A CN 107366266A CN 201710817447 A CN201710817447 A CN 201710817447A CN 107366266 A CN107366266 A CN 107366266A
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- CN
- China
- Prior art keywords
- water
- turbine set
- long
- middle low
- hammer pressure
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
- E02B9/02—Water-ways
- E02B9/06—Pressure galleries or pressure conduits; Galleries specially adapted to house pressure conduits; Means specially adapted for use therewith, e.g. housings, valves, gates
-
- 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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Details Of Valves (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a kind of water hammer pressure structure is prevented for the long diversion system of middle low water head, including water supplying chamber and synchronous discharging valve, water supplying chamber is arranged between long tunnel end and water turbine set, it is connected with the discharging valve of water turbine set reverser by water inlet pipe with water turbine set water inlet, is connected by adjutage with the tail water steel pipe of water turbine set.The present invention prevents destruction structure of the long diversion system water hammer pressure of middle low water head to building, instead of tradition and sets the modes such as surge-chamber.Implementation cost is low, and engineering construction progress is fast, simple to operate, and safety is guaranteed, and the later stage, which is changed, safeguards the advantages that simple.
Description
Technical field
The present invention relates to a kind of structure of water hammer-resistant pressure, especially a kind of waterproof for the long diversion system of middle low water head
Hammer the structure of pressure into shape.
Background technology
The development of water conservancy and hydropower cause is all extremely paid attention in countries in the world now, because water conservancy and hydropower cause is not only to be related to
The major issue of national economy and the people's livelihood, it can also be played in economic depression and pull the effect such as industry, so as to promote the development of social economy.
Tunnel is an important process system in Hydraulic and Hydro-Power Engineering, significant to engineering water conservancy diversion and diversion.
Water hammer pressure refer to pipe-line system due to streamflow regime (flow velocity) suddenly change caused instantaneous pressure, in pressure tunnel,
As valve turns off or on suddenly, water pump assembly parking etc. suddenly so that the flow velocity suddenly change of water, tradition solve to reduce water hammer
The harm method of pressure is to build surge-chamber, and power station upstream surge-chamber is used in pressure diversion mode, and main function is to reduce
The water hammer pressure in pressure diversion road (pressure tunnel or pressure pipe), prevents its destruction.Downstream surge-chamber (down stream surge-chamber) prevents
Destruction of the larger negative pressure to the hydraulic turbine and tail water building.
But because the change of the conditions such as geology, the construction of surge-chamber often cause difficulty to construction, influence project progress,
Cost is high, long in time limit.Therefore, how on the premise of engineering safety is ensured, using a kind of effective solution the long diversion tunnel water
The method for hammering pressure into shape, turns into urgent problem.
The content of the invention
The technical problem to be solved by the invention is to provide a kind of water hammer pressure is prevented for the long diversion system of middle low water head
Power structure, it is easy to construct, it is easy to operate, accelerate speed of application, be easy to later maintenance, change, use cost is low.
In order to solve the above problems, the technical solution adopted in the present invention is：One kind is used for the long diversion system of middle low water head
Prevent water hammer pressure structure, including water supplying chamber and discharging valve, water supplying chamber is arranged between long tunnel end and water turbine set, with
The synchronous discharging valve of water turbine set reverser is connected by water inlet pipe with water turbine set water inlet, passes through adjutage and water wheels
The tail water steel pipe of unit is connected.
The water supplying chamber is arranged on long tunnel horizontal end, positioned at the starting of the penstock to water turbine set diversion
End.
The water supplying chamber is gateway opening shape or shape of a hoof reinforced concrete structure.
Beneficial effects of the present invention：Avoid the long diversion system of water hammer pressure centering low water head to destroy, instead of tradition and set
Put the modes such as the surge-chamber that cost is high, difficulty of construction is big.Expense is low, and engineering construction progress is fast, simple to operate, and safety is guaranteed,
Later stage, which is changed, safeguards the advantages that simple.
Brief description of the drawings
Fig. 1 is the structural representation for preventing water hammer pressure structure that the present invention is used for the long diversion system of middle low water head.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and detailed description：
As shown in figure 1, the present invention's prevents water hammer pressure structure, including water supplying chamber for the long diversion system of middle low water head
2 and synchronous discharging valve 4, water supplying chamber 2 be arranged between the long end of tunnel 1 and water turbine set 3, with the reverser of water turbine set 3
Synchronous discharging valve 4 is connected by water inlet pipe 5 with the water inlet of water turbine set 3, passes through adjutage 6 and the tail water steel pipe of water turbine set
7 are connected, and during 3 removal of load of water turbine set, water turbine set 3 progressively closes off, and synchronous discharging valve 4 gradually automatically opens up, and makes in tunnel 1
Water tail water steel pipe 7 is discharged into by water inlet pipe 5 and adjutage 6, when water turbine set 3 increases load, by the moisturizing of water supplying chamber 2.
Specifically, the water supplying chamber 2 is arranged on the long horizontal end of tunnel 1, positioned at the pressure to the diversion of water turbine set 3
The initiating terminal of steel pipe 7.
The structure type of water supplying chamber 2 can be according to condition settings such as specific geology into door opening shape or shape of a hoof armored concrete
Structure, its volume can determine according to room volume under surge-chamber.
Water supplying chamber 2 is set in long tunnel 1, synchronous discharging valve 4, the synchronous both sides of discharging valve 4 are installed in the side of water turbine set 3
Water inlet pipe 5 and adjutage 6 are installed, connected respectively with long tunnel 1 and tail water steel pipe 7.During 3 removal of load of water turbine set, water turbine set 3
Progressively close off, synchronous discharging valve 4, which is gradually opened, to discharge water so that the water in long tunnel 1 is discharged into tail by water inlet pipe 5 and adjutage 6
Water steel pipe 7, surge pressure is greatly reduced or is dissipated, or even be decreased to zero.When increasing load, water turbine set 3 is gradually opened, synchronous
Discharging valve 4 is closed by the moisturizing of water supplying chamber 2.The destruction of the long diversion system of water hammer pressure centering low water head is avoided, instead of tradition
Using setting surge-chamber come by the way of reducing water hammer pressure.
The above embodiments are merely to illustrate the technological thought and feature of the present invention, and its object is to make skill in the art
Art personnel it will be appreciated that present disclosure and implement according to this, it is impossible to the scope of the claims of the present invention is only limited with the present embodiment,
The equal change or modification that i.e. all disclosed spirit is made, still fall in the scope of the claims of the present invention.
Claims (3)
1. a kind of prevent water hammer pressure structure for the long diversion system of middle low water head, it is characterised in that including water supplying chamber (2) and
Synchronous discharging valve (4), water supplying chamber (2) are arranged between long tunnel (1) end and water turbine set (3), reverse with water turbine set (3)
The synchronous discharging valve (4) of switch is connected by water inlet pipe (5) with water turbine set (3) water inlet, passes through adjutage (6) and water wheels
The tail water steel pipe (7) of unit is connected.
2. prevent water hammer pressure structure for the long diversion system of middle low water head according to claim 1, it is characterised in that institute
State water supplying chamber (2) to be arranged on long tunnel (1) horizontal end, positioned at the starting of the penstock (7) to water turbine set (3) diversion
End.
3. prevent water hammer pressure structure for the long diversion system of middle low water head according to claim 1, it is characterised in that institute
It is gateway opening shape or shape of a hoof reinforced concrete structure to state water supplying chamber (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817447.1A CN107366266A (en) | 2017-09-12 | 2017-09-12 | Water hammer pressure structure is prevented for the long diversion system of middle low water head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710817447.1A CN107366266A (en) | 2017-09-12 | 2017-09-12 | Water hammer pressure structure is prevented for the long diversion system of middle low water head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107366266A true CN107366266A (en) | 2017-11-21 |
Family
ID=60302573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710817447.1A Pending CN107366266A (en) | 2017-09-12 | 2017-09-12 | Water hammer pressure structure is prevented for the long diversion system of middle low water head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107366266A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU515497A1 (en) * | 1974-02-04 | 1976-05-30 | Украинский Научно-Исследовательский Институт Гидротехники И Мелиорации | Device for controlling soil moisture during subsurface irrigation |
| CN102878002A (en) * | 2012-10-10 | 2013-01-16 | 中国水电顾问集团西北勘测设计研究院 | Method for preventing surge pressure of water turbine water diversion system from rising |
| CN205742110U (en) * | 2016-05-18 | 2016-11-30 | 中国电建集团华东勘测设计研究院有限公司 | A kind of arrangement improving long diversion system power station unit operational flexibility |
| CN207211101U (en) * | 2017-09-12 | 2018-04-10 | 中水北方勘测设计研究有限责任公司 | It is a kind of to prevent water hammer pressure structure for the long diversion system of middle low water head |
-
2017
- 2017-09-12 CN CN201710817447.1A patent/CN107366266A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU515497A1 (en) * | 1974-02-04 | 1976-05-30 | Украинский Научно-Исследовательский Институт Гидротехники И Мелиорации | Device for controlling soil moisture during subsurface irrigation |
| CN102878002A (en) * | 2012-10-10 | 2013-01-16 | 中国水电顾问集团西北勘测设计研究院 | Method for preventing surge pressure of water turbine water diversion system from rising |
| CN205742110U (en) * | 2016-05-18 | 2016-11-30 | 中国电建集团华东勘测设计研究院有限公司 | A kind of arrangement improving long diversion system power station unit operational flexibility |
| CN207211101U (en) * | 2017-09-12 | 2018-04-10 | 中水北方勘测设计研究有限责任公司 | It is a kind of to prevent water hammer pressure structure for the long diversion system of middle low water head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171121 |