CN207419417U - For the open type diversion system of Power Tunnels - Google Patents
For the open type diversion system of Power Tunnels Download PDFInfo
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- CN207419417U CN207419417U CN201721557773.5U CN201721557773U CN207419417U CN 207419417 U CN207419417 U CN 207419417U CN 201721557773 U CN201721557773 U CN 201721557773U CN 207419417 U CN207419417 U CN 207419417U
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- aqueduct
- open type
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- regulating device
- diversion system
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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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Abstract
The utility model discloses a kind of open type diversion systems, especially disclose a kind of open type diversion system for Power Tunnels, belong to hydraulic and hydroelectric engineering Building Design building technology field.Offer is a kind of simple in structure, and construction cost is more cheap and can ensure the open type diversion system for Power Tunnels of diversion and power equipment safety operation well.The open type diversion system includes aqueduct, the open type diversion system further includes adaptive water-pressure regulating device, the aqueduct is the steel pipe on the basis of being arranged in coating along diversion line landform, and the adaptive water-pressure regulating device is plugged on the output terminal of the aqueduct；During diversion and power, the abnormal hydraulic pressure in the aqueduct is eliminated by the adaptive water-pressure regulating device.
Description
Technical field
The utility model is related to a kind of open type diversion system, more particularly, to a kind of opening wide for Power Tunnels
Formula diversion system belongs to hydraulic and hydroelectric engineering Building Design building technology field.
Background technology
When power station diversion line is longer and during when unexpected removal of load guide vane closing in unit operation, due to current
Effect of inertia, very big water hammer effect, easily damaged generating equipment can be generated in runner.If without surge shaft, water hammer can be hit
Ruin guide vane and other flow passage components.In order to discharge the water hammer pressure in runner, usually have a common boundary in diversion tunnel and pressure pipeline
Place sets surge-chamber, is transferred to avoid the water hammer pressure in pressure pipeline in diversion tunnel, influences diversion tunnel structure safety.
Surge-chamber be usually be excavated from massif it is well type structured, be known as surge shaft；The knot on protrusion ground can also be used in surge-chamber
Structure becomes surge tower.
Due to the effect of communicating pipe, when unit normal operation, water level and upper pond water level are substantially flat in surge-chamber
Neat；When load rejection closes the unit guide vane being currently running, since the water hammer in pressure pipeline generates bore, pressure regulation
Indoor water level will be above upstream reservoir level；When it is the guide vane for the unit for opening off-duty that unit, which increases load, due to pressure pipe
Water hammering in road, the indoor water level of pressure regulation will be less than upstream reservoir level.For surge-chamber, got rid of for satisfaction negative
The requirement of bore water level during lotus, structure crest level must be greater than upper pond water level.
At present, the structure feature of the common layout pattern of Diversion system of hydropower station is：1 from upstream to downstream, diversion system
It is made of diversion tunnel, surge-chamber, pressure pipeline；2 diversion tunnels and penstock are using land burial formula, in rock matter massif
It excavates；3 surge-chambers use surge shaft pattern, and well, which is dug, in rock matter massif to form, and the landform at surge-chamber position is higher than
Swimming reservoir level.The advantages of structure is：The structure can preferably adapt to the landform in rock matter massif area, geological conditions.When
Diversion line landform is less than upper pond water level, and during using coating geological conditions to be main, which will appear from problems with：1
Coating cavitation condition is poor, and construction cost is big, and diversion tunnel and pressure pipeline are poor using the economy of land burial formula；2 adjust
Pressure chamber position landform is less than upper pond water level, such as uses surge shaft pattern, it is impossible to bore water in surge-chamber when meeting removal of load
The requirement of position；For 3 diversion lines based on coating, basic bearing capacity is low, such as using concrete surge tank structure, due to weight
It is larger, it may can not meet foundation bearing capacity requirement, and then yielding of foundation or differential settlement occurs.
Utility model content
Technical problem to be solved in the utility model is：There is provided a kind of simple in structure, construction cost is more cheap and energy
Ensure the open type diversion system for Power Tunnels of diversion and power equipment safety operation well.
Used technical solution is to solve above-mentioned technical problem：A kind of open type diversion for Power Tunnels
System, including aqueduct, the open type diversion system further includes adaptive water-pressure regulating device, the aqueduct
For the steel pipe on the basis of being arranged in coating along diversion line landform, the adaptive water-pressure regulating device grafting
On the output terminal of the aqueduct；During diversion and power, abnormal hydraulic pressure in the aqueduct by it is described from
Water-pressure regulating device is adapted to eliminate.
The beneficial effects of the utility model are：The application is a set of including adaptive water-pressure regulating device and water delivery by setting
The open type diversion system of pipeline, and the aqueduct is arranged to be arranged on the basis of coating along diversion line landform
Steel pipe, then the adaptive water-pressure regulating device is plugged on the output terminal of the aqueduct.Again
During diversion and power, the abnormal hydraulic pressure in the aqueduct is made to be eliminated by the adaptive water-pressure regulating device.
In this way, since the steel pipe is on the basis of being arranged in coating along diversion line landform, so as to save
A large amount of on the basis of rock matter excavate work, simultaneously as by existing concrete structure and the tune that is embedded in rock matter basis
Kill-job, which improves, for adaptive water-pressure regulating device, may be omitted with building the foundation excavation that surge shaft needs, and then big
Amount reduces and reduces the purpose of foundation excavation workload, realizes the target for reducing construction cost.And due to by existing pressure regulation
After well construction is improved to the structure of adaptive water-pressure regulating device, the adaptive water-pressure regulating device of pressure regulation effect can also have been made
Structure it is more simple compared with the structure of existing surge shaft and can ensure that diversion and power equipment safety is transported well
Row.
It is further that the steel pipe includes steel aqueduct and forms the steel pressure of latter end aqueduct
Solenoid, the steel aqueduct are fixed on by armored concrete anchor block on the basis of the coating, and described is adaptive
Water-pressure regulating device is plugged on the junction of the steel aqueduct and the steel pressure pipe.
Said program it is preferable that, the adaptive water-pressure regulating device include surge tower and pre-buried coupling tube,
The top of the surge tower is open design, and the open elevation at the top of this of surge tower is not less than the peak level of upstream side, from
The pre-buried coupling tube that bottom is connected with the surge tower is plugged on the output terminal of the aqueduct.
It is further that the surge tower is steel drum type surge tower.
Further that the adaptive water-pressure regulating device further includes concrete pedestal, in the surge tower under
Portion and the pre-buried coupling tube are arranged in the concrete pedestal.
Said program it is preferable that, concrete foundation is additionally provided with below the concrete pedestal, it is described
Concrete pedestal is fixed on by the concrete foundation in excavation foundation.
Further that friction column is additionally provided in the excavation foundation, the top of the friction column with it is described
Concrete foundation connects.
Description of the drawings
Fig. 1 is floor plan of the utility model for the open type diversion system of Power Tunnels；
Fig. 2 is cross section view of the utility model for the open type diversion system of Power Tunnels；
Fig. 3 is the I portions enlarged drawing of Fig. 2.
In figure mark for：Aqueduct 1, adaptive water-pressure regulating device 2, coating basis 3, steel aqueduct 4, steel
Pressure pipe 5, armored concrete anchor block 6, surge tower 7, pre-buried coupling tube 8, concrete pedestal 9, concrete foundation 10, friction column
11。
Specific embodiment
That one kind provided by the utility model is simple in structure as shown in Figure 1, Figure 2 and shown in Fig. 3, construction cost it is more cheap and
It can ensure the open type diversion system for Power Tunnels of diversion and power equipment safety operation well.Described is open
Formula diversion system, including aqueduct 1, the open type diversion system further includes adaptive water-pressure regulating device 2, described
Aqueduct 1 is that steel pipe on coating basis 3, the adaptive hydraulic pressure tune are arranged in along diversion line landform
Regulating device 2 is plugged on the output terminal of the aqueduct 1；During diversion and power, the abnormal hydraulic pressure in the aqueduct 1
It is eliminated by the adaptive water-pressure regulating device 2.The application is a set of including adaptive 2 He of water-pressure regulating device by setting
The open type diversion system of aqueduct 1, and the aqueduct 1 is arranged to be arranged in coating along diversion line landform
Steel pipe on basis 3, is then plugged on the defeated of the aqueduct 1 by the adaptive water-pressure regulating device 2
In outlet.Again during diversion and power, the abnormal hydraulic pressure in the aqueduct is made to be adjusted by the adaptive hydraulic pressure
Device 2 eliminates.In this way, since the steel pipe is to be arranged in along diversion line landform on coating basis 3,
So as to save a large amount of excavation work on the basis of rock matter, simultaneously as by existing concrete structure and being embedded in rock
Surge shaft in matter basis improves the basis that for adaptive water-pressure regulating device 2, may be omitted with building surge shaft needs and opens
It digs, and then a large amount of purposes reduced and reduce foundation excavation workload, realize the target for reducing construction cost.And due to
After existing Structure of Surge Tank to be improved to the structure of adaptive water-pressure regulating device 2, it can also act on pressure regulation adaptive
It answers the structure of water-pressure regulating device 2 more simple compared with the structure of existing surge shaft and can ensure diversion well
Generating equipment safe operation.
In the above embodiment, include steel aqueduct 4 with reference to the steel pipe and form latter end water-supply-pipe
The design feature of the steel pressure pipe 5 in road in order to reduce excavated volume to greatest extent, while is can guarantee again to the steel water delivery
The fixed mass of pipeline, the steel aqueduct are fixed on by armored concrete anchor block 6 on the coating basis 3,
At this point, the 2 most preferred mounting structure of adaptive water-pressure regulating device is to be plugged on the steel aqueduct 4 and the steel
The junction of pressure pipe 5.Further, in order to both ensure the self-pressure regulating function of the adaptive water-pressure regulating device 2, simultaneously
Make its structure more succinct again, to reduce production cost, the adaptive water-pressure regulating device 2 is arranged to include by the application
The structure of surge tower 7 and pre-buried coupling tube 8, and the top of the surge tower 7 is arranged to open design, and also surge tower opens
Open this at the top of elevation not less than maximum head water, be plugged on from bottom with the pre-buried coupling tube 8 that the surge tower 7 connects
On the output terminal of the aqueduct 1.In this way, water pressure fluctuations caused by either removal of load still increases load can be very safe
The open surge tower 7 in logical top voluntarily adjust, it is simple in structure, make, build it is convenient.At this point, the surge tower 7 is preferably
Steel drum type surge tower.
It, should be certainly in order to reduce installation with reference to the design feature that surge tower 7 described herein is steel drum type surge tower
The foundation excavation amount of water-pressure regulating device 2 is adapted to, meanwhile, and ensureing the reliability of base installation, the adaptive hydraulic pressure is adjusted
Device 2 further includes concrete pedestal 9, and the middle and lower part of the surge tower 7 and the pre-buried coupling tube 8 are arranged in described
In concrete pedestal 9；Concrete foundation 10 is additionally provided in the lower section of the concrete pedestal 9, the concrete pedestal 9 is logical
The concrete foundation 10 is crossed to be fixed in excavation foundation；Friction column 11 is additionally provided in the excavation foundation, it is described to rub
The top for wiping column 11 is connected with the concrete foundation 10.
In conclusion the open type diversion system provided using the application has following advantageous effect：
1) diversion steel pipe and penstock are exposed penstock pattern, are directly arranged along diversion line earth's surface, without again
Coating underground cavern excavation is carried out, difficulty of construction substantially reduces, and the economy of diversion steel pipe and penstock is also improved；
2) surge-chamber employs the steel pressure regulation tower structure of protrusion ground configuration, and the crest level of pressure regulation tower body is higher than upper water
Highest bore water level when reservoir level and removal of load, disclosure satisfy that release load rejection when penstock in water hammer pressure will
It asks；
3) steel surge tower is from heavy and light, and employs the concrete foundation of big sectional area and bottom friction pilework, can
The requirement of the low foundation bearing capacity of alluvial deposit foundation is adapted to, the risk that yielding of foundation occurs substantially reduces.
Embodiment one
The key structural feature of the present embodiment：
A. diversion system is made of diversion steel pipe, steel surge tower and penstock；
B. diversion steel pipe uses exposed penstock pattern, arranges along diversion line landform, is fixed on using armored concrete anchor block 7
On the basis of coating；
C. steel surge tower is made of pressure regulation tower body, concrete pedestal, concrete foundation and the friction pile of its underpart；Pressure regulation
Tower body is cylinder type, and crest level is higher than upper pond water level and highest bore water level, using being welded after steel plate roll bending, pressure regulation
Tower body steel plate is deep into concrete pedestal, and is made pre-buried I-steel with concrete pedestal and mutually welded；Inside concrete pedestal
Connect there is provided embedded steel tube with upstream diversion steel pipe and downstream pressure steel pipe, it is pre-buried even between embedded steel tube and pressure regulation tower body
Connect steel pipe；Concrete foundation sectional area is more than concrete pedestal, and concrete foundation lower part is provided with friction pile；
D. penstock uses exposed penstock pattern, is fixed on using armored concrete anchor block on the basis of coating.
The advantageous effect of the present embodiment
A. diversion steel pipe and penstock are exposed penstock pattern, are directly arranged along diversion line earth's surface, without again
Coating underground cavern excavation is carried out, difficulty of construction substantially reduces, and the economy of diversion steel pipe and penstock is also improved.
B. surge-chamber employs the steel pressure regulation tower structure of protrusion ground configuration, and the crest level of pressure regulation tower body is higher than upper water
Highest bore water level when reservoir level and removal of load, disclosure satisfy that release load rejection when penstock in water hammer pressure will
It asks；
A) when unit normal operation, current are along intake, diversion steel pipe, steel surge tower in checkdam upper pond
Embedded steel tube, penstock enter power plant building, due to the effect of communicating pipe, part current are by pre-buried in concrete pedestal
Joint steel pipe enters pressure regulation tower body, and the water level in pressure regulation tower body is flushed with upper pond water level, less than pressure regulation tower body crest level；
B) generate water soot blower during load rejection, in penstock upstream to propagate, during through steel surge tower, water soot blower leads to
It crosses joint steel pipe pre-buried in concrete pedestal and enters pressure regulation tower body, the water level in pressure regulation tower body is raised, and pond ripple is also able to
Release.At this point, the bore water level in pressure regulation tower body is still below pressure regulation tower body crest level.
C. steel surge tower is from heavy and light, and employs the concrete foundation of big sectional area and bottom friction pilework, can
The requirement of the low foundation bearing capacity of alluvial deposit foundation is adapted to, the risk that yielding of foundation occurs substantially reduces.
Claims (7)
1. a kind of open type diversion system for Power Tunnels, including aqueduct (1), it is characterised in that：Described
Open type diversion system further includes adaptive water-pressure regulating device (2), and the aqueduct (1) is along diversion line landform cloth
The steel pipe on coating basic (3) is put, the adaptive water-pressure regulating device (2) is plugged on the water-supply-pipe
On the output terminal in road (1)；During diversion and power, the abnormal hydraulic pressure in the aqueduct (1) passes through the adaptive water
Regulating device (2) is pressed to eliminate.
2. the open type diversion system according to claim 1 for Power Tunnels, it is characterised in that：The steel
Matter aqueduct includes steel aqueduct (4) and forms the steel pressure pipe (5) of latter end aqueduct, the steel aqueduct
It is fixed on by armored concrete anchor block (6) on the coating basic (3), the adaptive water-pressure regulating device (2)
It is plugged on the junction of the steel aqueduct (4) and the steel pressure pipe (5).
3. the open type diversion system according to claim 1 or 2 for Power Tunnels, it is characterised in that：It is described
Adaptive water-pressure regulating device (2) include surge tower (7) and pre-buried coupling tube (8), the top of the surge tower (7) is unlimited
Structure, the open elevation at the top of this of surge tower are not less than the peak level of upstream side, are connected from bottom with the surge tower (7)
Pre-buried coupling tube (8) be plugged on the output terminal of the aqueduct (1).
4. the open type diversion system according to claim 3 for Power Tunnels, it is characterised in that：The tune
It is steel drum type surge tower to press tower (7).
5. the open type diversion system according to claim 3 for Power Tunnels, it is characterised in that：It is described from
It adapts to water-pressure regulating device (2) and further includes concrete pedestal (9), the middle and lower part of the surge tower (7) and the pre-buried transition
Pipe (8) is arranged in the concrete pedestal (9).
6. the open type diversion system according to claim 5 for Power Tunnels, it is characterised in that：Described mixed
Concrete foundation (10) is additionally provided with below solidifying soil matrix seat (9), the concrete pedestal (9) passes through the coagulation soil matrix
Plinth (10) is fixed in excavation foundation.
7. the open type diversion system according to claim 6 for Power Tunnels, it is characterised in that：Described
Friction column (11) is additionally provided in excavation foundation, the top of the friction column (11) is connected with the concrete foundation (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721557773.5U CN207419417U (en) | 2017-11-20 | 2017-11-20 | For the open type diversion system of Power Tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721557773.5U CN207419417U (en) | 2017-11-20 | 2017-11-20 | For the open type diversion system of Power Tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207419417U true CN207419417U (en) | 2018-05-29 |
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ID=62303706
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721557773.5U Active CN207419417U (en) | 2017-11-20 | 2017-11-20 | For the open type diversion system of Power Tunnels |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561670A (en) * | 2018-06-22 | 2018-09-21 | 中国电建集团贵阳勘测设计研究院有限公司 | Water hammer protection system for gravity flow water delivery system |
| CN110512575A (en) * | 2019-09-09 | 2019-11-29 | 四川清和水利水电工程设计有限公司 | A kind of diversion system and construction method with voltage regulation function |
-
2017
- 2017-11-20 CN CN201721557773.5U patent/CN207419417U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108561670A (en) * | 2018-06-22 | 2018-09-21 | 中国电建集团贵阳勘测设计研究院有限公司 | Water hammer protection system for gravity flow water delivery system |
| CN110512575A (en) * | 2019-09-09 | 2019-11-29 | 四川清和水利水电工程设计有限公司 | A kind of diversion system and construction method with voltage regulation function |
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