CN103556611B - The cushion pool filling and drainage system that can generate electricity - Google Patents
The cushion pool filling and drainage system that can generate electricity Download PDFInfo
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- CN103556611B CN103556611B CN201310537454.8A CN201310537454A CN103556611B CN 103556611 B CN103556611 B CN 103556611B CN 201310537454 A CN201310537454 A CN 201310537454A CN 103556611 B CN103556611 B CN 103556611B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The present invention relates to a kind of cushion pool filling and drainage system generating electricity. The object of this invention is to provide a kind of maintenance convenient, safe and reliable, easy operation maintenance, can reduce the cushion pool filling and drainage system generating electricity of energy consumption. Technical scheme of the present invention is: the cushion pool filling and drainage system that can generate electricity, there are dam, cushion pool, two dam, road and downstream river courses, in dam, Er road collector drain, pumping up power plant room is set, reversible water pump water turbine generator group is installed in factory building, the pipeline I of water inlet under this reversible water pump water turbine generator group pump operating condition in being embedded in two dams, road is communicated with cushion pool, and delivery port is communicated with downstream river course by the pipeline II being embedded in two dams, road; On described two dam, road one side massifs, be provided for collecting the infiltration of massif earth's surface, cushion pool two sides, and the regulating reservoir of dam, cushion pool and underground power house percolating water, regulating reservoir is higher than downstream river course water level, and this regulating reservoir is through diversion and power pipeline connection pipeline II. The present invention is applicable to Hydraulic and Hydro-Power Engineering.
Description
Technical field
The present invention relates to a kind of cushion pool filling and drainage system generating electricity. Be applicable to Hydraulic and Hydro-Power Engineering.
Background technology
Cushion pool is the energy dissipating scour protection engineering after arch dams, prevents that the rear dam foundation of arch dam sluicing from producing erosion attack, the safety and stability on protection dam. Conventionally in arch dam flood-discharge operation, or bank slope landslide may produce erosion attack to cushion pool when heavy rain. In order to ensure the safety of dam, generally all need regularly the cushion pool repair and maintenance that draws water. At present the cushion pool of the large hydropower station such as built two beaches of China, La Xiwa, voe adopts interim filling and drainage system to cushion pool emptying maintenance of drawing water.
Interim filling and drainage system, conventionally adopt temporary drainage pump, temporary laid pipeline and power transmission and transformation line and control appliance, after cushion pool internal water accumulation is drained into two dams, road, carry out cushion pool maintenance, after cushion pool has overhauled, the downstream water behind You Jiang bis-dams, road flows back to and is charged to cushion pool. Taking two power stations, beach as example, because the water accumulating volume in cushion pool is larger, adopt many high-power centrifugal pumps pump drainage simultaneously, water discharge time is still longer. And centrifugal pump suction journey is lower, along with water level in cushion pool constantly declines, need to adopt ship pump mode, place aboard ship the suction journey needs of centrifugal pump while meeting cushion pool low water level by centrifugal pump. After cushion pool repair and maintenance, then ship pump is placed in two tail water river courses, Ba Hou downstream, road, utilizes water pump to recharge cushion pool. Interim pump drainage mode mainly contains following weak point:
1 system building workload is large, and drainage system and assembly program are loaded down with trivial details;
2 system whole process substantially all need manual intervention, cannot realize automatic control and monitoring, operation, maintenance inconvenience;
3 pumping system equipment are arranged in open air, and drain system fault rate is high, inefficiency, and water discharge time is long;
4 temporary sources and electromechanical equipment are outside exposed, may bring potential safety hazard to staff.
The patent No. is that 201020554462.5 Chinese patent " supply and drain water system of cushion pool " provides the scheme of fixed water-pumping/draining pump house for cushion pool maintenance is set in dam, a kind of Er road, its advantage is: compared with scheme before, fill the automatic control operation of draining can realize cushion pool maintenance time. But this scheme also has many shortcomings, be mainly: the flood discharge probability of dam is relative also lower, thereby the maintenance probability of cushion pool is not very high yet, likely within 1 year, completing once maintenance or several years just completes once and overhauls, and pump house arrangement is in cushion pool Hou bis-road dam bodys, and aeration-drying condition is poor, there was dampness in the air, failure rate of electrical equipment is higher, and until really needing to utilize when filling drainage equipment and filling draining for cushion pool maintenance, equipment may break down or reach its service life. Meanwhile, in order to maintain the dry of pump house, a large amount of ventilations and dehumidification equipment need to be set, and the expense that maintains the dry dehumidifying of pump house and ventilation is also very high, thereby its practical value is not very high.
Summary of the invention
The technical problem to be solved in the present invention is: for the problem of above-mentioned existence, provide one maintenance convenient, reliable, the easy operation maintenance of device security, while can be reduced the cushion pool filling and drainage system generating electricity of energy consumption.
The technical solution adopted in the present invention is: a kind of cushion pool filling and drainage system generating electricity, there are dam, cushion pool, two dam, road and downstream river courses, it is characterized in that: in dam, Er road collector drain, pumping up power plant room is set, reversible water pump water turbine generator group is installed in factory building, the pipeline I of water inlet under this reversible water pump water turbine generator group pump operating condition in being embedded in two dams, road is communicated with cushion pool, and delivery port is communicated with downstream river course by the pipeline II being embedded in two dams, road; On described two dam, road one side massifs, be provided for collecting the infiltration of massif earth's surface, cushion pool two sides, and the regulating reservoir of dam, cushion pool and underground power house percolating water, regulating reservoir is higher than downstream river course water level, and this regulating reservoir is through pipeline II described in diversion and power pipeline connection.
Described pipeline I is communicated with downstream river course through bypass line.
On described diversion and power pipeline He on bypass line, by-pass valve control is all housed, in described pipeline I, the both sides that are communicated with position with bypass line are all equipped with by-pass valve control, in described pipeline II, by-pass valve control is all housed with the both sides at diversion and power pipeline connection position.
Described pipeline I import elevation is a little more than plunge pool floor elevation, and pipeline II outlet elevation is a little less than two road crest elevations.
Pressure transmitter, Pressure gauge are housed in described pipeline I and pipeline II and show stream signalling means.
Described regulating reservoir has overfall dam, and regulating reservoir bottom is provided with sand duct, and sand surfing valve is installed in bottom outlet, and sand duct is communicated with downstream river course through earial drainage road.
The invention has the beneficial effects as follows: main dynamics equipment of the present invention adopts reversible water pump water turbine generator group, and be provided with regulating reservoir, by underground power house, the earth's surface percolating water of the percolating water of dam and cushion pool and two sides massif collects, diversion and power pipeline is set, utilize water drop to produce the ventilation of electric energy as reversible water pump water turbine generator group factory building, dehumidification equipment operation power supply, unnecessary electric energy is delivered to electrical network, not only reduce energy consumption, also will bring benefits, improved the running environment of reversible water pump water turbine generator group simultaneously, service life of equipment can ensure to some extent. in the time that cushion pool need to overhaul, according to the drop of cushion pool and the level of tail water, utilize generating and the pumping function of reversible water pump water turbine generator group, in increasing economic efficiency, the draining while taking into account cushion pool maintenance. after cushion pool has overhauled, utilize the drop generating of two dam, road downstream waters and plunge pool floor, increase economic efficiency.
The reversible water pump reversible water pump water turbine generator group filling and drainage system of cushion pool is provided with terrain operation and Long-distance Control monitoring system. Can realize automatic operation control, operations staff is easy to operate, has avoided the potential safety hazard of the loaded down with trivial details and system operation that interim filling and drainage system builds, and more can ensure the stable operation of cushion pool.
Compared with fixed filling and drainage system, this system only needs to increase a small amount of additional investment, can reduce the water discharge time that fills while maintenance, greatly improves cushion pool and fills drainage efficiency; The drop that utilizes of the percolating water in rock mass and massif in pivot building thing is carried out to energy recovery simultaneously, increased electric energy, reduced the energy consumption of auxiliary system of power station; Repair apparatus can, for a long time for generating, also improve the utilization rate of equipment, has reduced the fault rate of equipment; Operation and maintenance cost when native system has reduced the electric energy that consumes while filling draining and auxiliary system of power station operation in a large number, technical scheme more reliably, more energy-conserving and environment-protective.
Brief description of the drawings
Fig. 1 is horizontal layout schematic diagram of the present invention.
Fig. 2 is filling and drainage system figure of the present invention.
Detailed description of the invention
Along with the development of China's hydropower, also have a lot of high arch dams or extra-high-speed arch dam constantly to build, the scale of cushion pool is increasing. These power stations scale of generally installing is all huge, and the status of occupying in network system is all very important, therefore, require to shorten as far as possible the time of large-scale cushion pool turn(a)round, provide and overhaul easily scheme and be beneficial to the reliable and easy operation maintenance of device security, reduce energy consumption, become the common recognition in industry.
As shown in Figure 1, be followed successively by cushion pool 2, two dams, road 3 and downstream river course 4 in the downstream of dam 1. In this example in conjunction with two dam, road 3 layouts of internal drainage gallery and the layouts of other collector drains, in dam, Er road collector drain, select suitable position that power plant building 301 is set, and reversible water pump water turbine generator group 6 is installed in this power plant building, the pipeline I 7 of the water inlet of this reversible water pump water turbine generator group under pump operating condition in being embedded in two dams, road is communicated with cushion pool 2, and delivery port is communicated with downstream river course 4 by the pipeline II 8 being embedded in two dams, road. Stop up with pipeline II 8 for the pipeline I 7 of switching power cushion pool 2 and downstream river course 4, pipeline I 7 import elevations are a little more than cushion pool 2 floor elevations, and pipeline II 8 exports elevation a little less than two dam, road 3 crest levels. Pipeline I 7 can directly be communicated with downstream river course 4 through bypass line 9, or is communicated with downstream river course 4 through bypass line 9, pipeline II 8. In this example, in pipeline I 7 and pipeline II 8, pressure transmitter, Pressure gauge be housed and show the Automation Elements such as stream signalling means.
The present embodiment is in conjunction with underground power house seepage drainage system 501, the drainage pattern of pump drainage percolating water of seepage of dam drainage system 101 and cushion pool seepage drainage system 201 and the reasonable Arrangement of drainage path, mode in conjunction with cushion pool two sides massif surface water along the draining on hillside, two sides to downstream, by earth's surface infiltration and the dam of two sides massif, the percolating water of cushion pool and underground power house is in the open channel 11 that catchments collects in the regulating reservoir 10 on two dam, road one side massifs, this regulating reservoir is positioned at than the downstream river course 4 higher positions of normal operating water level, so that forming drop generates electricity. regulating reservoir 10 is communicated with by diversion and power pipeline 15 the pipeline II 8 being embedded in two dams, road. in this example, regulating reservoir 10 is with overfall dam, and regulating reservoir bottom is provided with sand duct, and sand surfing valve 13 is installed in bottom outlet, and sand duct is communicated with downstream river course through earial drainage road 12.
As shown in Figure 2, in this example, on diversion and power pipeline 15 and bypass line 9, by-pass valve control 14 is all housed. In pipeline I 7, be communicated with both sides, position with bypass line 9 by-pass valve control 14 be all housed, in pipeline II 8, be communicated with both sides, position with diversion and power pipeline 15 by-pass valve control 14 is all housed. In this example, all valves can be operated by the control of control panel cabinet or terrain, and this control panel cabinet also can control & monitor reversible water pump water turbine generator group 6 running statuses.
In the present embodiment, the Bottom Altitude of power plant building 301 need meet reversible water pump water turbine generator group 6 in the cavitation requirement of hydraulic turbine operation operating mode and water pump operation operating mode and inhale range request, and the arrangement space of power plant building should meet diversion and power pipeline, the diversion pipeline of pump operating condition and layout, installation and repairing and the operation maintenance of all devices of reversible water pump water turbine generator group 6 hydraulic turbine operating modes. In conjunction with the design of collector drain and the layout of reversible water pump water turbine generator group and auxiliary equipment, transport and daily maintenance, the operation maintenance needs of staff that special passage meets power plant building 301 interior all devices need to be set, in power plant building, be provided with ventilation, dehumidification equipment, its power supply can provide power supply by reversible water pump water turbine generator group simultaneously.
The specific works mode of the present embodiment is as follows:
Normal operating condition: open corresponding valve, the earth's surface infiltration of cushion pool two sides massif, and dam, the percolating water of cushion pool and underground power house is collected to regulating reservoir 10 through the open channel 11 that catchments, the diversion and power pipeline 15 of then flowing through, pipeline II 8, reversible water pump water turbine generator group 6, pipeline I 7 and bypass line 9 flow to downstream river course 4, now reversible water pump water turbine generator group 6 operates in hydraulic turbine operating mode, utilize water-head and the percolating water stream of regulating reservoir and downstream river course to generate electricity, to the ventilation in network system and power plant building, dehumidification equipment power supply. taking certain power station as example, only the capacity of earth's surface percolating water every day of two sides water body just can reach 80,000 m3, adding the seepage drainage of building everywhere, usefulness is considerable.
Cushion pool maintenance: when the maintenance of cushion pool is generally all arranged in power station minority unit generation, carry out in downstream river course 4 operating water levels are lower simultaneously situation, now, reversible water pump water turbine generator group 6 operates in pump operating condition, and the ponding in cushion pool 2 is drained into downstream. Its operating process is:
If the interior water level of cushion pool 2 during higher than the level of tail water, is opened the valve on bypass line 9, in cushion pool water by the road I 7, bypass line 9 flow to voluntarily in downstream river course 4, realize the free-draining function of bypass line free-draining system.
According to the pressure sensor of installing on pressure pipeline, Pressure gauge with show stream signalling means, can judge the water level situation in the interior water level of cushion pool 2 and downstream river course 4. In the time that cushion pool 2 water levels and downstream river course 4 water levels remain basically stable, can close the by-pass valve control 14 on bypass line 9, several several reversible water pump water turbine generator groups 6 that simultaneously start in factory building are moved at pump operating condition, force pump drainage by water pump, interior cushion pool 2 remaining ponding is drained in downstream river course 4. After the ponding in cushion pool 2 has been got rid of, stop reversible water pump water turbine generator group 6, start the suction pump of 1 reversible water pump water turbine generator group 6 or several low discharges simultaneously, get rid of a small amount of percolating water being collected in cushion pool 2.
In the time that reversible water pump water turbine generator group 6 operates in pump operating condition, can open the erosion and deposition valve 13 in regulating reservoir 10 simultaneously, utilize the percolating water of hydraulic structure to collect water, mud in regulating reservoir 10 is passed through to the sand duct of regulating reservoir 10 bottoms, drain into downstream river course 4 by earial drainage road 12, complete the cleaning work of regulating reservoir bottom sludge, even can overhaul part diversion and power pipeline 15 and maintenance separation valve door 14 simultaneously.
After cushion pool has overhauled: by opening the valve connecting on reversible water pump water turbine generator group 6 front and back pipelines, utilize the water level of two dam, road 3 downstream river courses and the drop of cushion pool 2 base plates to generate electricity, drive reversible water pump water turbine generator group 6 to operate in hydraulic turbine operating mode to system power supply, generate electricity current from downstream process unit simultaneously, can realize the function that two dam, road downstream waters recharge to cushion pool 2, can judge with show stream signalling means and the data monitoring of pressure sensor transmission and the ruuning situation of reversible water pump water turbine generator group 6 in pipeline II 8 whether cushion pool 2 water-fillings complete by being arranged on pipeline I 7, after water-filling completes, close corresponding by-pass valve control 14.
Cushion pool recharges water to be moved by normal operating condition after completing, utilize the earth's surface infiltration of cushion pool two sides massif, and the percolating water of dam, cushion pool and underground power house drives reversible water pump water turbine generator group 6 to operate in hydraulic turbine operating mode to power to network system.
Certainly, the design of the present embodiment is also applicable to the stiling basin maintenance scheme that gravity dam has.
Claims (4)
1. the cushion pool filling and drainage system that can generate electricity, has dam (1), cushion pool (2), Er Daoba(3) and downstream river course (4), it is characterized in that: in dam, Er road (3) collector drain, water-storage is setPower plant building (301), installs reversible water pump water turbine generator group (6), this reversible water pump water in factory buildingThe pipeline I (7) of water inlet under turbine generator group pump operating condition in being embedded in two dams, road and cushion pool (2)Be communicated with, delivery port is communicated with downstream river course (4) by the pipeline II (8) being embedded in two dams, road; DescribedOn two dam, road (3) one side massifs, be provided for collecting massif earth's surface, cushion pool two sides infiltration, and dam, waterThe regulating reservoir (10) of the pad pool and underground power house percolating water, regulating reservoir (10) is higher than downstream river course (4) water level,This regulating reservoir is communicated with described pipeline II (8) through diversion and power pipeline (15);
Described pipeline I (7) is communicated with downstream river course (4) through bypass line (9);
Described pipeline I (7) import elevation is a little more than cushion pool (2) floor elevation, and pipeline II (8) exportsElevation is a little less than Er Daoba (3) crest level.
2. the cushion pool filling and drainage system generating electricity according to claim 1, is characterized in that: described inDiversion and power pipeline (15) above and on bypass line (9) is all equipped with by-pass valve control (14), described pipeline I(7) by-pass valve control (14) is all equipped with, described pipeline II in both sides upper, be communicated with position with bypass line (9)(8) by-pass valve control (14) is all equipped with in both sides upper, be communicated with position with diversion and power pipeline (15).
3. the cushion pool filling and drainage system generating electricity according to claim 1, is characterized in that: described inIn pipeline I (7) and pipeline II (8), pressure transmitter, Pressure gauge are housed and show stream signalling means.
4. the cushion pool filling and drainage system generating electricity according to claim 1, is characterized in that: described inRegulating reservoir (10) has overfall dam, and regulating reservoir bottom is provided with sand duct, and sand surfing valve (13) is installed in bottom outlet,Sand duct is communicated with downstream river course (4) through earial drainage road (12).
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| CN201310537454.8A CN103556611B (en) | 2013-11-05 | 2013-11-05 | The cushion pool filling and drainage system that can generate electricity |
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| CN201310537454.8A CN103556611B (en) | 2013-11-05 | 2013-11-05 | The cushion pool filling and drainage system that can generate electricity |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104695392B (en) * | 2015-03-18 | 2017-01-11 | 中国电建集团成都勘测设计研究院有限公司 | Plunge pool structure used for high arch dam, narrow canyon and large-flow flood discharge hole |
| CN105256877B (en) * | 2015-10-30 | 2024-03-22 | 上海市政工程设计研究总院（集团）有限公司 | Drop device, rainwater collection system and exhaust method of rainwater collection system |
| CN105256858B (en) * | 2015-10-30 | 2023-11-28 | 上海市政工程设计研究总院（集团）有限公司 | Water delivery device, rainwater collection system and exhaust method thereof |
| CN107326876B (en) * | 2017-08-14 | 2023-02-28 | 长江勘测规划设计研究有限责任公司 | Non-closed non-pumping drainage plunge pool structure |
| CN111119141A (en) * | 2020-01-17 | 2020-05-08 | 中国电建集团贵阳勘测设计研究院有限公司 | Tail water hole export overhauls gate and fills drainage structures |
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| US20100209192A1 (en) * | 2006-06-23 | 2010-08-19 | Hans Christian Behm | Adjustable weir for hydroelectric dam installations |
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Patent Citations (5)
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| CN2711231Y (en) * | 2004-06-09 | 2005-07-20 | 国家电力公司华东勘测设计研究院 | Counter-regulation pond structure at downstream of dan |
| CN1743664A (en) * | 2005-09-23 | 2006-03-08 | 杨清福 | New method of electric power generation utilizing water potential energy |
| US20100209192A1 (en) * | 2006-06-23 | 2010-08-19 | Hans Christian Behm | Adjustable weir for hydroelectric dam installations |
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