CN207619949U - Diversion system for Power Tunnels - Google Patents
Diversion system for Power Tunnels Download PDFInfo
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- CN207619949U CN207619949U CN201721557640.8U CN201721557640U CN207619949U CN 207619949 U CN207619949 U CN 207619949U CN 201721557640 U CN201721557640 U CN 201721557640U CN 207619949 U CN207619949 U CN 207619949U
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- ladle
- pressure
- steel
- diversion
- aqueduct
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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 diversion systems, especially disclose a kind of 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 diversion system for Power Tunnels of diversion and power equipment safety operation well.The diversion system includes aqueduct, and the diversion system further includes self-adjustable steel hydraulic pressure stabilizing device, and the self-adjustable steel hydraulic pressure stabilizing device is plugged on the output end of the aqueduct；During diversion and power, the abnormal hydraulic pressure in the aqueduct is eliminated by the self-adjustable steel hydraulic pressure stabilizing device.
Description
Technical field
The utility model is related to a kind of diversion system, more particularly, to a kind of diversion system for Power Tunnels,
Belong to hydraulic and hydroelectric engineering Building Design building technology field.
Background technology
When power station diversion line is longer, and when unexpected removal of load guide vane closing in unit operation, due to flow
Effect of inertia, will produce prodigious water hammer effect, easily damaged generating equipment 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's setting surge-chamber, is transmitted to avoid the water hammer pressure in pressure pipeline in diversion tunnel, influences diversion tunnel structure safety.
Surge-chamber is usually that well type structured, referred to as surge shaft is excavated from massif；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 not running 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 when lotus, structure crest level must be greater than upper pond water level.
Currently, 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 use 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 be less than upper pond water level, and with coating geological conditions be it is main when, which problems with will occurs：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, bore water in surge-chamber when cannot meet removal of load
The requirement of position；For 3 diversion lines based on coating, basic bearing capacity is low, concrete surge tank structure is such as used, due to weight
It is larger, foundation bearing capacity requirement may be cannot be satisfied, 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 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 diversion system for Power Tunnels,
Including aqueduct, the diversion system further includes self-adjustable steel hydraulic pressure stabilizing device, the self-adjustable steel hydraulic pressure
Stabilizing device is plugged on the output end of the aqueduct；During diversion and power, the abnormal hydraulic pressure in the aqueduct
It is eliminated by the self-adjustable steel hydraulic pressure stabilizing device.
The utility model has the beneficial effects that：The application includes self-adjustable steel hydraulic pressure stabilizing device by being arranged a set of
Then the self-adjustable steel hydraulic pressure stabilizing device is plugged on the output end of the aqueduct by diversion system, and in diversion
In power generation process, the abnormal hydraulic pressure in the aqueduct is eliminated by the self-adjustable steel hydraulic pressure stabilizing device.In this way,
Since existing concrete structure and the surge shaft that is embedded in rock matter basis are improved to self-adjustable steel hydraulic pressure stabilizing device,
So as to save the building foundation excavation of surge shaft, the construction work of building and the investment, reach reduction construction
The purpose of cost；It, can be with meanwhile after existing Structure of Surge Tank to be improved to the structure of self-adjustable steel hydraulic pressure stabilizing device
Keep the structure of the self-adjustable steel hydraulic pressure stabilizing device of pressure regulation effect more simple compared with the structure of existing surge shaft,
And it can ensure diversion and power equipment safety operation well.
Further, the aqueduct includes steel aqueduct and constitutes the steel pressure of latter end aqueduct
Pipe, for the steel aqueduct on the basis of diversion line landform is arranged in coating, the self-adjustable steel hydraulic pressure stabilizes dress
Set the junction for being plugged on the steel aqueduct and the steel pressure pipe.
The preferred mode of the above solution is that the steel aqueduct is fixed on described cover by armored concrete anchor block
On the basis of cap rock.
Further, the self-adjustable steel hydraulic pressure stabilizing device includes closing ladle, pressure regulating mechanism and pressure
Tension detection mechanism, the pressure closed in ladle pass through the pressure regulating mechanism and adjust, the pressure in the closing ladle
Power situation is measured by the pressure detection mechanism, and the self-adjustable steel hydraulic pressure stabilizing device passes through the closing steel
Packet is plugged on the output end of the aqueduct.
The preferred mode of the above solution is that the pressure regulating mechanism include gas tube and with the sky that fully pipe is connect
Air compressor, the gas tube are connected to the closing ladle.
Further, the pressure detection mechanism includes pressure monitoring pipe and the data that are connect with the pressure monitoring pipe
Processor, the end of the pressure monitoring pipe are located at the middle and upper part of closing ladle packet intracavitary.
The preferred mode of the above solution is that the closing ladle includes ladle ontology and is connected to the ladle ontology pre-
Coupling tube is buried, the closing ladle is plugged on the steel aqueduct and the steel pressure by the pre-buried coupling tube
The junction of pipe.
Further, the closing ladle further includes concrete pedestal, the middle and lower part of the ladle ontology and described
Pre-buried coupling tube be arranged in the concrete pedestal.
Further, concrete foundation is additionally provided with below the concrete pedestal, the concrete pedestal
It is fixed on excavation foundation by the concrete foundation.
Further, being additionally provided with friction column in the excavation foundation, the top of the friction column is mixed with described
Solidifying earth foundation connection.
Description of the drawings
Fig. 1 is floor plan of the utility model for the diversion system of Power Tunnels；
Fig. 2 is cross section view of the utility model for the diversion system of Power Tunnels；
Amplify drawing in the portions I that Fig. 3 is Fig. 2；
Fig. 4 be Fig. 2,3 A-A sectional views.
In figure label for：Aqueduct 1, self-adjustable steel hydraulic pressure stabilizing device 2, steel aqueduct 3, steel pressure pipe 4,
Coating basis 5, armored concrete anchor block 6, closing ladle 7, pressure regulating mechanism 8, pressure detection mechanism 9, gas tube 10,
Air compressor 11, pressure monitoring pipe 12, data processor 13, ladle ontology 14, pre-buried coupling tube 15, concrete pedestal 16,
Concrete foundation 17, friction column 18.
Specific implementation mode
As shown in Figure 1, Figure 2, it is that one kind provided by the utility model is simple in structure shown in Fig. 3 and Fig. 4, construction cost is more low
The diversion system for Power Tunnels that is honest and clean and can ensureing diversion and power equipment safety operation well.The diversion system
System includes aqueduct 1, and the diversion system further includes self-adjustable steel hydraulic pressure stabilizing device 2, the self-adjustable steel
Hydraulic pressure stabilizing device 2 is plugged on the output end of the aqueduct 1；It is different in the aqueduct 1 during diversion and power
Ordinary water pressure is eliminated by the self-adjustable steel hydraulic pressure stabilizing device 2.The application includes self-adjustable steel by being arranged a set of
Then the self-adjustable steel hydraulic pressure stabilizing device 2 is plugged on the aqueduct 1 by the diversion system of hydraulic pressure stabilizing device 2
On output end, and during diversion and power, the abnormal hydraulic pressure in the aqueduct 1 passes through the self-adjustable steel hydraulic pressure
Stabilizing device 2 is eliminated.In this way, since existing concrete structure and the surge shaft that is embedded in rock matter basis are improved to self-regulated
Formula steel hydraulic pressure stabilizing device, so as to save the construction work of the foundation excavation of the building surge shaft, building with
And investment, achieve the purpose that reduce construction cost；Meanwhile existing Structure of Surge Tank is improved to self-adjustable steel hydraulic pressure and is stabilized
After the structure of device, the structure of the self-adjustable steel hydraulic pressure stabilizing device of pressure regulation effect and existing surge shaft can also have been made
Structure is simple compared to more, and can ensure diversion and power equipment safety operation well.
In the above embodiment, in order to maximally reduce foundation excavation amount, while meeting again in coating geology item
Engineering construction requirement on part includes steel aqueduct 3 and composition latter end aqueduct in conjunction with aqueduct 1 described herein
Steel pressure pipe 4 the characteristics of, the steel aqueduct 3 is arranged in along diversion line landform on coating basis 5, it is described
Self-adjustable steel hydraulic pressure stabilizing device 2 is plugged on the junction of the steel aqueduct 3 and the steel pressure pipe 4；Meanwhile it will
The self-adjustable steel hydraulic pressure stabilizing device 2 is arranged to include closing ladle 7, pressure regulating mechanism 8 and pressure detection mechanism 9
Structure, in engineering equipment operational process, the pressure in the closing ladle 7 is adjusted by the pressure regulating mechanism 8,
Pressure condition in the closing ladle 7 is measured by the pressure detection mechanism 9, and the self-adjustable steel hydraulic pressure is stabilized
Device 2 is plugged on by the closing ladle 7 on the output end of the aqueduct 1.At this point, the steel aqueduct 3
It is fixed on preferably by armored concrete anchor block 6 on the coating basis 5.The pressure regulating mechanism 8 is preferably
The structure for the air compressor 11 being connect including gas tube 10 and with the gas tube 10, and by the gas tube 10 and the envelope
Close the connection of ladle 7；The pressure detection mechanism 9 preferably comprises pressure monitoring pipe 12 and is connect with the pressure monitoring pipe 12
Data processor 13 structure, and by the end of the pressure monitoring pipe 12 be located at closing ladle packet intracavitary middle and upper part.
Further, closing ladle 7 described herein is plugged on the output end of the aqueduct 1 for convenience,
And convenient for fixed closing ladle 7 described herein, the closing ladle 7 is arranged to include ladle ontology 14 by the application
The structure for the pre-buried coupling tube 15 being connected to with the ladle ontology 14, and the closing ladle 7 is made to pass through the pre-buried mistake
Cross the junction that pipe 15 is plugged on the steel aqueduct 3 and the steel pressure pipe 4；The closing ladle 7 also wraps simultaneously
Concrete pedestal 16 is included, the middle and lower part of the ladle ontology 14 and the pre-buried coupling tube 15 are arranged in the concrete
In pedestal 16；And it is additionally provided with concrete foundation 17 in the lower section of the concrete pedestal 16, make the concrete pedestal 16
It is fixed on the excavation foundation of coating by the concrete foundation 17；Then it is additionally provided in the excavation foundation again
Friction column 18 makes the top of the friction column 18 be connect with the concrete foundation 17.In this way, both facilitating closing ladle 7
It is plugged on the output end of the aqueduct 1, and can ensure to close fixation of the ladle 7 on the basis of coating.
In conclusion the diversion system using the application has advantageous effect below：
1) diversion steel pipe and penstock are exposed penstock pattern, directly arrange, no longer need to along diversion line earth's surface
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) ladle position in ground is far below upper pond water level, but due to being filled with compressed air in ladle, unit just
Upper pond and differential water pressures in ladle can be often stabilized when operation, and the water hammer in penstock can be stabilized in load rejection
Pressure disclosure satisfy that the respective performances requirement of surge-chamber；
3) it is provided with monitoring pipe in ladle with external data processor to be connected, the hydraulic pressure in ladle can be understood at any time
Power, air pressure and water level；When such as finding water pressure, air pressure and water level decreasing, the air compression of external setting can be used
Machine is inflated by gas tube into ladle, it is ensured that the safe operation of ground ladle；
4) ground ladle is from heavy and light, and uses the concrete foundation and bottom friction pilework of big sectional area, Neng Goushi
The requirement for answering the low foundation bearing capacity of alluvial deposit foundation, the risk that yielding of foundation occurs substantially reduce；
5) the low, good seismic performance of ground ladle height.
Embodiment one
The key structural feature of the present embodiment：
A. diversion system is made of diversion steel pipe, ground ladle, that is, above-mentioned closing ladle and penstock；
B. diversion steel pipe uses exposed penstock pattern, arranges along diversion line landform, is fixed on using armored concrete anchor block
On the basis of coating；
C. ground ladle is made of ladle, concrete pedestal, concrete foundation with its friction pile below, ground ladle position
It sets and is far below upper pond water level；Ladle is closed pressure vessel, has been filled with compressed air for stabilizing upstream and downstream differential water pressures
And the water hammer pressure in penstock；Ladle is by pipe section, canalis spinalis section and silently forms, and gas tube and outside are provided in ladle
Air compressor is connected, and is provided with monitoring pipe and is connected with external data processor；Pre-buried steel is provided with inside concrete pedestal
Pipe connects with upstream diversion steel pipe and downstream pressure steel pipe, pre-buried joint steel pipe between embedded steel tube and ladle；Coagulation soil matrix
Plinth 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 the basis of coating using armored concrete anchor block.
Beneficial effects of the present invention
A. diversion steel pipe and penstock are exposed penstock pattern, directly arrange, no longer need to along diversion line earth's surface
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. ladle position in ground is far below upper pond water level, but due to being filled with compressed air in ladle, unit just
Upper pond and differential water pressures in ladle can be often stabilized when operation, and the water hammer in penstock can be stabilized in load rejection
Pressure, so disclosure satisfy that the respective performances requirement of surge-chamber.It illustrates below：
A) when unit normal operation, flow is along intake, diversion steel pipe, ground ladle in checkdam upper pond
Embedded steel tube, penstock enter power plant building.Ladle present position is relatively low, and there are hydraulic pressure between upper pond and ladle
Difference, but due to being filled with compressed air inside ladle, when air pressure is suitable with differential water pressures, the water level in ladle will be located
In stable state, achieve the purpose that stabilize upstream and downstream water-head；
B) it generates water soot blower when load rejection, in penstock upstream to propagate, when through ground ladle, water soot blower passes through
Pre-buried joint steel pipe enters in ladle in concrete pedestal, and the water level in ladle will be raised, and compressed air also will be further
Compression, when air pressure is suitable with water hammer wave pressure, the water level in ladle will not be lifted again, reached and stabilized penstock
The purpose of middle water hammer pressure.
C. it is connected with the air compressor of outside setting provided with gas tube in ladle, is provided with monitoring pipe and external number
It is connected according to processor.It illustrates below:
A) it inflates for the first time.Before resuming operation after power station operation for the first time or maintenance, it is first shut off power plant building, passes through intake
To diversion system water-filling so that penstock, ladle, joint steel pipe, embedded steel tube, diversion steel pipe are in water-filled state；
Then, enough compressed airs are filled with into ladle by gas tube using air compressor.
B) tonifying Qi.By the data processor of the monitoring pipe and external setting that are arranged in ladle, ladle can be understood at any time
Interior water pressure, air pressure and water level；When finding water pressure, air pressure and water level decreasing, external setting can be used
Air compressor is inflated by gas tube into ladle, it is ensured that the safe operation of ground ladle.
D. ground ladle is from heavy and light, and uses the concrete foundation and bottom friction pilework of big sectional area, Neng Goushi
The requirement for answering the low foundation bearing capacity of alluvial deposit foundation, the risk that yielding of foundation occurs substantially reduce；
E. the low, good seismic performance of ground ladle height.
Claims (10)
1. a kind of diversion system for Power Tunnels, including aqueduct (1), it is characterised in that：The diversion system
System further includes self-adjustable steel hydraulic pressure stabilizing device (2), and the self-adjustable steel hydraulic pressure stabilizing device (2) is plugged on described defeated
On the output end of waterpipe (1)；During diversion and power, the abnormal hydraulic pressure in the aqueduct (1) passes through the self-regulated
Formula steel hydraulic pressure stabilizing device (2) is eliminated.
2. the diversion system according to claim 1 for Power Tunnels, it is characterised in that：The aqueduct
(1) include steel aqueduct (3) and constitute the steel pressure pipe (4) of latter end aqueduct, the steel aqueduct (3) is along drawing
Water line landform is arranged on coating basic (5), and the self-adjustable steel hydraulic pressure stabilizing device (2) is plugged on the steel and draws
The junction of water pipe (3) and the steel pressure pipe (4).
3. the diversion system according to claim 2 for Power Tunnels, it is characterised in that：The steel diversion
Pipe (3) is fixed on by armored concrete anchor block (6) on the coating basic (5).
4. the diversion system according to claim 2 or 3 for Power Tunnels, it is characterised in that：The self-regulated
Formula steel hydraulic pressure stabilizing device (2) includes closing ladle (7), pressure regulating mechanism (8) and pressure detection mechanism (9), the envelope
The pressure closed in ladle (7) is adjusted by the pressure regulating mechanism (8), and the pressure condition in the closing ladle (7) is logical
It crosses the pressure detection mechanism (9) to measure, the self-adjustable steel hydraulic pressure stabilizing device (2) passes through the closing ladle
(7) it is plugged on the output end of the aqueduct (1).
5. the diversion system according to claim 4 for Power Tunnels, it is characterised in that：The pressure is adjusted
Mechanism (8) includes gas tube (10) and the air compressor (11) that is connect with the gas tube (10), the gas tube (10) with
Closing ladle (7) connection.
6. the diversion system according to claim 5 for Power Tunnels, it is characterised in that：The pressure detecting
Mechanism (9) includes pressure monitoring pipe (12) and the data processor (13) that is connect with the pressure monitoring pipe (12), the pressure prison
The end of test tube (12) is located at the middle and upper part of closing ladle packet intracavitary.
7. the diversion system according to claim 6 for Power Tunnels, it is characterised in that：The closing ladle
(7) the pre-buried coupling tube (15) for including ladle ontology (14) and being connected to the ladle ontology (14), the closing ladle (7) are logical
Cross the junction that the pre-buried coupling tube (15) is plugged on the steel aqueduct (3) and the steel pressure pipe (4).
8. the diversion system according to claim 7 for Power Tunnels, it is characterised in that：The closing ladle
(7) further include concrete pedestal (16), the middle and lower part of the ladle ontology (14) and the pre-buried coupling tube (15) are arranged
In the concrete pedestal (16).
9. the diversion system according to claim 8 for Power Tunnels, it is characterised in that：In the coagulation soil matrix
It is additionally provided with concrete foundation (17) below seat (16), the concrete pedestal (16) passes through the concrete foundation
(17) it is fixed on the excavation foundation of coating.
10. the diversion system according to claim 9 for Power Tunnels, it is characterised in that：In the excavation base
Friction column (18) is additionally provided in plinth, the top of the friction column (18) is connect with the concrete foundation (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721557640.8U CN207619949U (en) | 2017-11-20 | 2017-11-20 | Diversion system for Power Tunnels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721557640.8U CN207619949U (en) | 2017-11-20 | 2017-11-20 | Diversion system for Power Tunnels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207619949U true CN207619949U (en) | 2018-07-17 |
Family
ID=62829076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721557640.8U Active CN207619949U (en) | 2017-11-20 | 2017-11-20 | Diversion system for Power Tunnels |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207619949U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747300A (en) * | 2017-11-20 | 2018-03-02 | 中国电建集团成都勘测设计研究院有限公司 | Diversion system for Power Tunnels |
| CN113073602A (en) * | 2021-04-06 | 2021-07-06 | 长江勘测规划设计研究有限责任公司 | Sand prevention dispersion water inlet diversion system |
-
2017
- 2017-11-20 CN CN201721557640.8U patent/CN207619949U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107747300A (en) * | 2017-11-20 | 2018-03-02 | 中国电建集团成都勘测设计研究院有限公司 | Diversion system for Power Tunnels |
| CN113073602A (en) * | 2021-04-06 | 2021-07-06 | 长江勘测规划设计研究有限责任公司 | Sand prevention dispersion water inlet diversion system |
| CN113073602B (en) * | 2021-04-06 | 2022-06-03 | 长江勘测规划设计研究有限责任公司 | Sand prevention dispersion water inlet diversion system |
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