WO2022016825A1

WO2022016825A1 - Power generation device using water-retaining dams respectively having bell-mouth-type water channels

Info

Publication number: WO2022016825A1
Application number: PCT/CN2021/000094
Authority: WO
Inventors: 谢沛鸿; 谢晓曼
Original assignee: 谢沛鸿
Priority date: 2020-07-24
Filing date: 2021-04-29
Publication date: 2022-01-27
Also published as: CN111893966A; CN111893966B

Abstract

The present invention relates to a power generation device using water-retaining dams respectively having bell-mouth-type water channels. In an appropriate river section, water-retaining dams respectively having bell-mouth-type water channels are built underwater across the river. Each water-retaining dam is flush with the water surface, and an adjustable and controllable barrier is provided at an empty space at the bottom of the dam and allows water to pass through, so as to facilitate removal of upstream sediments. In this way, the river does not need to be blocked, enabling aquatic animals to move upstream or downstream to migrate or to establish habitats. The main flow of water enters the bell-mouth-type water channels which are horizontal funnel-shaped, and a water turbine and a generator are provided at a water outlet at the bottom of each bell-mouth-type water channel, thereby enabling the flow velocity of water to increase due to pressure intensity, and driving the water turbine to generate electricity accordingly.

Description

A bell mouth water bag type choke dam power generation device

technical field

The invention belongs to the technical field of water conservancy and hydropower. The utility model relates to a bell mouth water bag type choke dam power generation device, which relates to a low dam water conservancy and hydropower technical scheme which is composed of a bell mouth water bag type choke dam and a power generation device. Select the appropriate river section, that is, the place where the river surface width, flow velocity, water depth, drop and other parameters are suitable, and construct the bell mouth water bag choke dam in the underwater horizontal river. The function of the choke dam slows down the speed of the river water, causing the upstream water level to rise, making it easier to navigate. The water surface is flush with the choke dam, and it can overflow from the top when the water volume is large. At the bottom of the choke dam, there are empty movable fences. The water flow passes through the bottom of the fence, and the flow velocity is accelerated, which is beneficial to remove the sediment deposited upstream due to the choke and slow flow. Therefore, it is not necessary to cut off the river, which is conducive to the migration and habitation of aquatic animals upstream and downstream. The most important thing is that the main flow flows downstream into the bell mouth horizontal funnel-shaped water bag, and the water turbine and generator are installed at the water outlet at the bottom of the bell mouth water bag, and the water flow whose pressure increases the flow rate is used to impact the water turbine to generate electricity. The space left by the fence at the bottom of the choke dam can be adjusted to maintain the water level, velocity and flow according to real-time changing hydrological conditions. The principle is that the flow of upstream water should not be less than the effluent left at the bottom of the choke dam plus the power generation effluent at the bottom of the bell mouth water bag. During the flood season, the bell mouth of the choke dam can be automatically adjusted and lowered to completely shrink to the bottom of the river bed to ensure unobstructed flow. The bell mouth water bag type choke dam is close to the two banks to leave space for the construction of liftable and adjustable ship locks or passage waterways. The bell mouth water bag choke dam is made into a horizontal funnel-shaped power generation device integrated with a hydro-generator. The tail water outlet of this power generation device still has accelerated water flow, which can scour and remove sediment deposited on the river bottom. It is possible to build multiple bell-mouthed power generation devices horizontally and vertically downstream, and also build hydropower stations with cascaded bell-mouthed water bag-type choke dam power generation devices on the tributaries and main streams of the river. Water energy can achieve the effects of power generation, flood control, navigation, rational water use and so on. Rivers and water conservancy are accompanied by flood disasters. Since ancient times, water management has taken the benefits of water and eliminated the problems of water. In order to control the flood, Dayu focused on dredging. However, if we simply build dams to block rivers and block rivers, and build strong embankments for thousands of miles to block water and lock dragons, it is only a strategy of blocking and intercepting. Water conservancy should be as good as possible, and early prevention of flooding is required. Rivers contain water energy, and nature has given them a balanced energy. By going with the flow and developing sustainably, we can not only make the most of the water, but also prevent problems before they happen.

Background technique

At present, the construction of reservoirs or dams to store water and drive hydro-turbine generators to generate electricity is a mature and common hydroelectric power generation technology. However, strictly speaking, in addition to many benefits such as flood control, power generation, navigation, etc., the dam hydropower project still fails to make full use of all the water resources and water energy of the river, and there are various concerns about the natural environment, ecology and safety. There is no need to go into detail.

Canadian beavers are able to bite off thick tree trunks, drag tree trunk branches into valley streams and build dams similar to fences, creating deep ponds upstream, and turning pebble shallow streams into deep ponds. Active in deep ponds to avoid the attacks of predators. The beaver blocking dam can let the water flow through the gaps between the trunks and branches without cutting off the stream, and the fish can go upstream to the quiet pond to lay their eggs and hatch, which is a harmonious natural environment. In the valleys and streams of Canada, it is common to see cascade ponds formed by several beaver blocking dams. Beavers are active in different ponds, because the upstream streams continue to flow down, filling up section after section. The cascade ponds actually play a natural role of delaying the rapid loss of stream water and preventing the stream bed from being exposed. Learning from the wisdom of beavers, we can also build similar barrier dams and cascade dams in rivers to raise the upstream water level and delay the speed of river water loss. After the river water level rises, the upstream flow rate slows down, making it more suitable for navigation. The river water can pass through the gap at the bottom of the barrier dam, and the water flow is accelerated, which helps to remove the sediment that has been carried away. Such a fence choke dam can not only utilize water resources as much as possible, but also maintain the water flow of the river and maintain a healthy water environment.

The formation of the Qiantang River tide has natural geographical conditions. The two ends of the Hangzhou Bay at the mouth of the Qiantang River are hundreds of kilometers wide. It connects with the top tide viewing point to form a horn-like funnel-like terrain. impact. This is the reason for the water pressure. The continuous pressure of the water flow remains unchanged, and the cross-sectional area at the entrance of the water flow remains unchanged. With the influx of water, the cross-sectional area of the water channel gradually shrinks and the bottom of the river rises, the water flow pressure increases, and the impact force also increases. Applying the principle of water flow pressure, the downstream bell mouth water bag type power generation device can be built along the river.

In hydraulic engineering technology, rubber dam is a kind of gravity dam. Low dams are characteristic of rubber dams and are also removable dams. River water flows over the top of the rubber dam, creating a waterfall landscape. However, rubber dams are mainly used for retaining water to raise the water level, and generally do not have the function of generating electricity. At the same time, in order to fix the rubber dam, it is necessary to dig trenches on the river bed, so that the rubber dam sits on the bottom of the river. Therefore, the rubber dam also cuts off the river flow, which is not conducive to the migration and habitation of aquatic animals.

Based on the characteristics of the above background technology, the present invention is conditionally applicable to the calculation formula of the power generation of the dam power station: P=GQHη;

Liquid pressure calculation formula: P=pGH, P=F/S, liquid pressure and electric power calculation formula: P=W/t

SUMMARY OF THE INVENTION

A bell mouth water bag type choke dam power generation device, the specific content of which includes the following:

Choose a suitable river location. Assumptions: The river surface is 100m wide, the water depth is 6m, and the flow rate is 1m per second, and a hydropower station with a bell mouth water bag choke dam power generation device is constructed. In the river section with such conditions, three connected rigid funnel-shaped water-bag choke dams, each 20m wide, 5m high and 1m empty at the bottom, can be built. Several flared squares are connected to reduce flow and water flow loss. The bottom is left empty for 1m, in order to keep the upstream and downstream of the river connected, and use the water flow to discharge the sand. The 1m installation of rolling shutter type fence with controllable height at the bottom can be adjusted to fully open or fully close the interception according to needs. The length of the bell mouth water bag is 3 times the width of 60m, and increasing the depth can increase the pressure. The tail of the funnel-shaped water bag is a 1m square water outlet pipe, which is connected to the hydro-generator driven by the strong water flow due to the increase in pressure. The bell mouth funnel-shaped water bag type power generation device is inclined and lying along the river flow. The inclination of the bell mouth water bag causes a certain gravitational potential energy of the water flow, and can avoid sediment deposition in the bell mouth water bag. The upper width of the inlet bell mouth is flush with the water, the lower width is suspended on the river bed for 1m, and a controllable rolling shutter fence is set in the gap between the water inlet and the river bed. The tail of the bell-mouth funnel-shaped water bag is connected to the water inlet of the turbine and is flush with the river bed, resulting in a long slope of 1m→0m and 60m long. The water turbine is located on the river bed, and the generator connected with the water turbine is arranged in the sealed culvert channel buried in the lower part of the river bed.

The bell mouth funnel-shaped water bag is a horizontal three-dimensional structure composed of two sides and four sides of the upper and lower sides, such as steel and other rigid material plates. The water inlet of the bell mouth and the water inlet to the turbine at the bottom are empty. The lower bottom panel and the two side panels are connected by hinged hinges, and the two sides are supported by several hydraulic devices at right angles, and the winch pulley wire rope device is used for pulling recovery and tension reset fixation. The grooves of the upper cover panel are embedded with the embedded falcons of the two side panels, which can be controlled to be disengaged or embedded. Except that there is a row of ball bearings on the edge of the cover panel on the bell mouth and a ball bearing at the top of the two side panels to reduce frictional resistance, the two sides of the cover panel of the bell mouth are provided with grooves from beginning to end, and the upper sides of the two side panels are embedded The falcon is embedded in the groove and fixed. The tail of the upper cover is connected with the upper door hinge of the water turbine. Under normal circumstances, the bell mouth funnel-shaped water bag normally enters the water, and the water is discharged under pressure to generate electricity. During the flood season, the four panels of the bell mouth water bag can be loosened and contracted and stacked on the river bed, which is convenient for flood discharge. After the flood season, the bell mouth funnel-shaped water bag can be automatically controlled and reset. When the bell mouth water bag is loosened and contracted, the oblique string hydraulic pump screw of the hydraulic device supported at right angles on both sides of the outside pushes the two side panels inward, so that the embedded falcon is separated from the groove of the upper cover, and falls inward to an angle of 45 degrees. The screw of the pressure pump relaxes the pressure and retracts. The upper cover plate connected to the water turbine with the door hinge and the rear water inlet is pressed down by gravity, and is connected with the two side panels that are falling inward, and the gravity pressure of the cover plate is added to the top of the two side panels. The ball bearing on the upper cover of the bell mouth is connected with the ball bearing at the top of the two side panels that are falling inward to reduce frictional resistance, and they fall horizontally and overlap on the lower panel of the river bed one after another. Integrated with the right-angle vertical hydraulic pump device arranged on both sides of the outer side of the bell mouth water bag is a set of equipment for pulling and recovering the side panel composed of a winch, a pulley and a wire rope. One end of the wire rope is fastened to a loop on the outer upper part of the side panel. When the bell mouth water bag is released and contracted, the wire rope is also released, and finally is pressed on the plane under the upper cover. When the bell mouth water bag begins to reset and reassemble, the vertical hydraulic pumps on both sides of the square bell mouth support the top cover to a certain height, the motor winch tightens the wire rope through the pulley, and pulls the two side panels outward to restore to 45 degrees and continues to pull until it stands upright. , the ball bearing at the top of the side and the ball bearing on the cover surface roll to the top of both sides, the embedded falcon on the edge of the side panel is re-inserted into the groove of the cover, the wire rope is tightened and fixed, and the bell mouth water bag returns to its original state.

A trench is dug on the river bed to bury a sealed culvert channel, and three or more generators connected to the turbine are placed inside. The turbine and generator are integrated. Certainly. The exit of the Hengjiang culvert channel is located in the control building of the power station room on both banks.

For the river surface with a width of 100m, except for the 60m width of the three bell mouth water bag-type choke dam power generation devices, the remaining 20m width on both sides of the river can be built through the ship lock. The purpose of building a ship lock is to intercept the flow of water, raise the water level, and prevent the flow of water from being lost in vain. The water resources of rivers with low flow and shallow flow are very precious. The actual situation of each river and each river section is different, and the hydropower station should be designed according to the river surface width and water depth. If the water depth is much more than 6m, the bell mouth water bag type choke dam power generation device can be installed below the river surface, and the navigable ships can pass over the choke dam crest without having to do a ship lock. The size of the water inlet area of the bell mouth, the shape and size of the water bag can also be adjusted, manufactured and installed according to the actual situation of the river hydrology. Anyway, the bell mouth water bag type choke dam power generation device hydropower station will not hinder the navigation of ships, raise the water level, and create better conditions for the navigation of ships. What's more, choke dams slow the flow of water, retaining valuable flow without reducing the hydrodynamic force that washes the river.

Even if the water depth of the river is insufficient or even very shallow, it is possible to learn the wisdom of beavers and build a hydropower station with a bell mouth water bag choke dam power generation device. The bell-mouth water-bag choke dam can be made to completely block the flow first, and after reaching a certain water depth, then open the bottom of the fence to a certain extent and the shutter-type opening to flow through. The upstream water should not be less than the outlet water of the roller shutter type blank outlet plus the flow rate of the driving power generation device. In this way, many regional short rivers with a length of only tens of kilometers or only 100 kilometers with a slight drop can retain the flow and use water. Distance by ship, can create water features and aquaculture, can be used for agricultural irrigation and industrial water.

It is possible to build a hydropower station with several bell-mouth water bag-type choke dam power generation devices arranged on the Hengjiang River in the selected river flow section, or build a hydropower station with several or several rows of bell-mouth water bag-type choke dam power generation devices along the river flow. It is possible to build a cascaded bell mouth water bag-type choke dam power plant hydropower station not far apart along the river flow. The number of hydropower stations of the bell mouth water bag choke dam power generation device on the river can be much more than that of the dam reservoir power station. Does not affect the natural function of the river. The water energy given by nature should be utilized as much as possible. In a word, the water energy contained in the river is expressed by the gravity of still water and the potential energy of flowing water, and it is the energy of gravitation. Technical solutions for power flow and other natural functions.

Although the hydropower station of the bell mouth water bag-type choke dam power generation device should be constructed in a suitable river section, the various components of the hydropower station: the four-sided door hinged rigid hinge of the bell mouth funnel-shaped water bag, the hinge door hinge Bearings, turbines and generators, as well as various standard sections of the Hengjiang sealed culvert channel, rolling shutter doors at the bottom of the choke dam, hydraulic systems on both sides of the right-angle support water bag, motor winch system for the recovery and reset of the water bag, etc., must be in advance. Do standard modular manufacturing in the factory and install it at the site of the hydropower station.

The present invention can be conditionally applied to the calculation formula of the power generation of the dam power station: P=GQHη. P=generating power, G=gravity constant 9.8, Q=second flow rate (cross-sectional area of river X second velocity), H=water head height, η=working efficiency of turbine and generator. At present, the working efficiency of hydraulic turbine and generator in my country has reached 90%, so η=90%X90%=81%. This formula is applied to high-head gravity hydropower generation in dam reservoirs. This formula can be applied to the bell mouth water bag choke dam power generation device conditionally, but there are large uncertain variables. First of all, the constant G=9.8 of this formula is the vertical acceleration of gravity, and the bell-mouth water-bag choke dam power generation device is the power generation of water flow power energy with strong pressure from the slope movement. If G=9.8 is applicable to the calculation of the power generation, it is necessary to calculate to the resistance, which is an offsetting variable. In addition, the horizontal funnel shape of the bell-mouth water bag also increases the pressure, which is also a variable. The calculation formula of the power generation power of the dam power station can be applied conditionally: P=GQHη. When the specific installed power is calculated, the actual calculation is made according to the actual conditions.

Liquid pressure calculation formula: P=pGH, which is the liquid pressure calculation formula in a vertical regular container (such as a cylinder or a cube). P=pressure, unit is Pa, p=water liquid density, unit is 1 ton/m3, G=9.8, H=height of regular container, unit m, H above the cube is a cube with a height of 1,60m, at the bottom The H of the upper part is 60. If the area above the cube is 20m X 5m=100m2, then the pressure at the top is P=100X1X9.8X1=980pa. The pressure at the bottom of the cube with a height of 60m is P=100X9.8X60=58,800pa.

Under the condition that the horizontal area of the container is constant, the pressure of the liquid increases as the depth of the container increases and the bottom area decreases. The formula P=F/S, F=58,800, S=1m2 (the cross-sectional area of the water inlet of the bottom dewatering turbine) can be used conditionally to calculate the pressure of the funnel-shaped three-dimensional container or the bell mouth water bag here P=58,800/1= 58,800pa.

Liquid pressure and power generation formula: P=W/t, P=kw (kilowatt), W=58,800, t is the second time. In the case of a flow rate of 1 m/s, t=60 seconds. 58,800/60=980kw. The power of the bell mouth water bag choke dam power generation device with each bell mouth sectional area is 20mX5m, depth is 60m, and the bottom turbine inlet is 1mx1m is 980kw. Since there are many big variables in the actual situation , for example, if the water velocity gradually increases by more than 1m/s, so t will be less than 60 seconds, and the actual power generated will increase. Due to the variables of the actual situation, the above conditional correlation calculation should not be completely correct, it just proves the principle that the bell mouth water bag choke dam power generation device can be used for power generation, and the water flow with increased pressure can drive the hydro-generator generating electricity. The installed capacity of the hydro-generator should be calculated according to the actual situation.

Description of drawings:

Figure 1: Flare water bag type choke dam power generation device (aerial top view)

1, 2, 3, bell mouth water bag. [0022] 4, 5, 6, the water inlet of the bell mouth water bag.

7, 8, 9, the water inlet of the water turbine at the bottom of the bell mouth water bag. [0024] 10, 11, 12, hydroelectric generators. [0025] 13, 14, place the entrance and exit of the culvert channel of the hydro-generator unit.

15, 16, the dotted line is the culvert channel for placing the hydro-generator set under the river bed.

17. Going upstream, go through the lock on Sheung Shui.

18. The ones going downstream go through the locks.

19. The floating object blocking net upstream of the water inlet of the bell mouth water bag.

20. Sheung Shui passes through the ship lock entrance.

21, 22, 23, the water outlet of the hydro-generator.

24, 25, 26, 27, rivers with water.

28. Sheung Shui passes the exit of the ship lock.

29. Launch through the entrance of the lock.

30, 31, 32, the dotted lines are the rolling shutters that are left empty at the lower part of the water inlet of the bell mouth water bag.

33. Launch through the exit of the lock.

Figure 2: Upstream right and downstream left views of the power generation device of a single bell mouth water bag choke dam

1. The recumbent water bag with the right view of the upstream flow.

2. Downstream left-view flared water bag.

3, 4, the upstream river water in the right view.

5, 6, 7, 8, turbine generator.

9, 10, the dotted line is the rolling shutter fence that is left empty at the lower part of the water inlet of the bell mouth water bag.

11, 12, the bell mouth water bag has the upper edge of the ball bearing.

13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, water bag recovery recombination system with motor winch, pulley block and wire rope connecting both sides of the board .

29, 30, 31, 32, the upper cover of the bell mouth water bag is supported by the hydraulic pump erected at a right angle.

33, 34, 35, 36, the thick black string hydraulic pump pushes the two side plates inward to 45 degrees.

37, 38, 39, 40, riverbed.

41, 42, the dotted line is the culvert channel where the hydro-generator set is placed under the riverbed.

Figure 3: Aerial top view of the power generation device of a single bell mouth water bag choke dam

1. Flared water bag.

2, bell mouth water bag inlet.

3. The dotted line is the rolling shutter fence that is left empty at the lower part of the water inlet of the bell mouth water bag.

4, 5, 6, 7, 8, 9, the door hinges that connect the two side panels of the bell mouth water bag to the lower panel door hinges.

10, 11, 12, 12', the dotted line is the connection between the upper edge of the panels on both sides of the bell mouth water bag and the groove of the upper cover plate. [0055] 13, 14, 15, 16, 17, 18, the hydraulic pump and winch device for the support, retraction and recovery of the two side panels of the bell mouth water bag.

19. The upper cover of the bell mouth water bag is connected to the door hinge above the bottom water turbine.

20. Hydrogenerator.

21. The dotted line is the culvert channel for placing the hydro-generator set under the river bed.

22. The water outlet of the hydro-generator.

Figure 4: Front view of the downstream section of the power generation device with a single bell mouth water bag choke dam

1. Flared water bag.

2. The water body of the river.

3. The side of the bell mouth water bag supports the hydraulic pump at the edge of the water inlet on the upper cover.

4. The water inlet of the bell mouth water bag.

5. Turbine. [

6. Generator and culvert channel. [

7. The upper cover of the bell mouth water bag is connected to the hinge door hinge above the water turbine.

8. The dotted line is the connection of the embedded groove where the side panel of the bell mouth water bag is combined with the upper cover.

9, 10, 11, the dotted line and the thick black line segment are the door hinge connection between the side panel of the bell mouth water bag and the lower panel.

12, 13, 14, support, push the side panels inward to 45 degrees and recover the reassembled hydraulic pump and winch system. [0071] 15, 16, 17, 18, 19, cement infrastructure under the riverbed.

20, water surface.

21. The water outlet of the turbine.

22. The dotted line is the rolling shutter fence left empty at the lower part of the water inlet of the bell mouth water bag.

23, the riverbed.

Figure 5: Schematic diagram of the release and shrinkage of a single bell mouth water bag

1. The hydraulic pump pushes the panels on both sides of the bell mouth water bag to invert by 45 degrees, and the upper cover panel is pressed down by gravity. [0078] 2, the four panels on the upper and lower sides of the bell mouth water bag are all loosened and contracted to be horizontally superimposed on the riverbed.

3, 3', the dotted line indicates the position of the bell-mouth hydration bag before shrinking.

4, 5, 6, 7, turbine generator.

8, 9, place the culvert channel of the hydro-generator set under the river bed.

10, 11, the dotted line is the rolling shutter fence that is left empty at the lower part of the water inlet of the bell mouth water bag.

12, 13, 14, 15, the hydraulic pump at the edge of the water inlet of the cover on the side support of the bell mouth water bag

16, 17, 18, 19, the thick black string hydraulic pump pushes the two side plates inward to 45 degrees.

20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, the water bags on both sides connected by the motor winch, pulley block and wire rope are restored and restored. combined system.

37, 38, the hydraulic pump pushes the two side panels of the bell mouth water bag to dump 45 degrees inward.

39, 40, the upper cover panel of the bell mouth water bag is lowered horizontally.

41, 42, the ball bearings at the top of the panels on both sides are connected with the ball bearings on the edge of the water inlet and travel with less resistance.

43, 44, the side panels are completely collapsed and the lower panel and the upper cover panel are horizontally overlapped.

45. The fitting of the side panel and the upper cover panel, the two panels are fitted at right angles from the beginning to the end.

46. The ball bearing on the top of the side panel is in contact with the ball bearing on the edge of the upper covering surface.

Figure 6: Aerial top view of a single bell mouth water bag being released and retracted horizontally superimposed on the river bed

1. A large isosceles triangle is the horizontal overlap of the upper and lower and side panels.

2, 3, the two side panels are horizontally stacked between the lower panel and the upper cover panel.

4. The dotted line here is the rolling shutter fence that is left empty at the lower part of the water inlet of the bell mouth water bag.

5. The water inlet of the bell mouth water bag.

6, 7, 8, 9, 10, 11, door hinges connecting the side panels to the bottom panel.

12. The upper cover is connected to the door hinge above the water turbine.

13, 14, 15, 16, 17, 18, used to support, push and restore hydraulic pumps and winch devices outside the side panels. [0100] 19, a hydroelectric generator.

20. Place the culvert channel of the hydro-generator under the river bed.

Figure 7: Expanded view of the four panels of a single bell mouth water bag outwards

1, the upper cover panel.

2, the lower panel.

3, 4, the two side panels that expand outwards.

5, 6, the hinged door hinge with the combination of the two side panels and the lower panel. [

7. The upper cover panel is connected to the hinge door hinge on the top of the turbine.

Figure 8: Schematic diagram of recovery and reassembly of a single flared water bag

1. By erecting the hydraulic pump to support the top cover and the winch pulley steel rope to pull the two side panels, the bell mouth water bag is half restored. [0110] 2, the bell mouth water bag is reassembled and restored to a full working state.

3. The dotted line is the position to be restored. [

4, 5, 6, 7, turbine generator.

8. The restored bell mouth water bag has the upper edge of the ball bearing, which is connected to the side panel at a 45-degree angle.

9. The fully restored bell mouth water bag has the upper edge of the ball bearing, and the two side panels have been embedded in the groove to connect the support. [0115] 10, 11, place the culvert channel of the hydroelectric generator under the riverbed.

12, 13, the dotted line here is the roller shutter fence that is left empty at the lower part of the water inlet of the bell mouth water bag.

14, 15, 16, 17, the hydraulic pump on the edge of the water inlet of the cover surface on the side support of the bell mouth water bag.

18, 19, 20, 21, the thick black string hydraulic pump is only used for loosening and shrinking, and this function is not used for recovery and recombination. [0119] 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, connected, pulled up and taut by motor winch, pulley block and wire rope system Both side panels, recovery recombination flared hydration bag.

38, 39, the ball bearings on the top of the two side panels are pulled to 45 degrees and the ball bearings on the upper edge of the bell mouth contact and travel outward until they are fully assembled.

40, 41, 42, 43, riverbed.

Figure 9: A hydropower station and river integrated water conservancy system of a bell mouth water bag-type choke dam power generation device

1, 2, the upstream to downstream of the curved main trunk stream.

3, 4, 5, 6, 7, 8, the cascade bell mouth water bag choke dam power generation device hydropower station on the main stream.

9, 10. Build strong sluice gates in weak parts where the flow of the curved main stream is not smooth, open the gate to supply water to the water conservancy system when the water is abundant, release the flood in advance to lower the water level of the main stream in case of flood, and build a bell mouth water bag-type power generation device under the sluice.

11, 12, 13, 14, 15, 16, 17, the integrated water conservancy water network matched with the main stream.

18, 19, 20, 21, 22, the storage lakes, mountain ponds and reservoirs of the integrated water conservancy and water network supporting the main stream.

23 and 24, the drainage gates of the integrated water conservancy water network to the downstream section of the main stream where the topography is low and the water level is low. With the bell-mouth water bag-type choke dam power generation device, the power is sufficient, and the water can be drained by electricity inside and outside the main river embankment, depending on the water level and flood situation.

Specific embodiments of the present invention:

As shown in Figure 1, a hydropower station with a bell mouth water bag type choke dam power generation device. Choose a suitable river location. Assumption: The normal river surface is 100m wide, the water depth is 6m, and the average flow rate is 1m per second. In the dry seasons of autumn and winter, at the construction site of the selected river section, flexible rubber dams are used to quickly get out of the power station construction ground on the river bed, and earthwork and cement pouring infrastructure for digging trenches and burying the culverts of the Hengjiang River are carried out. At the same time, various components of the hydropower station are manufactured in the factory according to standard modules and shipped to the hydropower station site for installation. With this specific implementation plan, it should be possible to build a bell mouth water bag choke dam power generation device hydropower station during the dry winter. In the river section with such suitable conditions, three connected hydropower stations with rigid bell mouth water bag choke dam power generation devices with each bell mouth width of 20m, height of 5m and a bottom of 1m can be built. Pass the lock. If the water depth is sufficient, for example, the water depth is more than 10m, there is no need to build a ship lock, and a hydropower station with five bell mouth water bag-type choke dam power generation devices can be connected, and ships of the corresponding tonnage can sail over the choke dam crest.

There are different types of rivers and their basins. For example, the Yellow River is long and has a wide basin, but its annual flow is small. The water resources of less than 60 billion cubic meters are extremely precious, and it is a great waste to lose it to the sea in vain. A hydropower station with a bell mouth water bag-type choke dam power generation device can delay the loss of flow and maximize the use of water resources, while maintaining the river's hydrodynamics and other natural functions.

For example, there are a lot of short rivers in Xinjiang, Gansu, and Qinghai in the northwest, but almost all of them originate from snow-capped mountains. The flow is short and there is a drop. The flow of water flows into desert basins or inland lakes in vain. Condition to build a hydropower station with a bell mouth water bag-type choke dam power generation device to achieve the purpose of utilizing local water resources to develop the industrial and agricultural economy.

For example, the plateau rivers such as Jinsha River, Nu River, Lancang River, and Brahmaputra have large drops and extremely rich water energy. Considering the natural ecology and international river disputes involved in the construction of dams, it is completely possible to build a hydropower station with a bell-mouth water bag-type choke dam power generation device. , with all the benefits and no harm.

For example, the Yangtze River and the Pearl River and their vast watersheds are more complicated, with large annual flow and flood disasters caused by seasonal large-scale concentrated heavy rainfall. The system of the Three Gorges Dam and tens of thousands of reservoirs in my country has played a huge role in regulating flood discharge during the flood season. Even so, such river basins still suffer from droughts caused by uneven terrain and seasonal rainfall, as well as dangerous situations such as insufficient flood discharge during flood seasons, and river bank ruptures. As shown in Figure 9, the hydropower station and the river water conservancy system that built the bell-mouth water bag-type choke dam power generation device are combined, and a firm sluice is built at the weak point of the bend and embankment of the big river and a bell-mouth water bag type power generation device is added. Connect the lakes, reservoirs and ponds of the integrated water network system in the basin. During the flood season, the water volume of the water network and lakes in the main stream embankment of the river can be supplemented by the sluice, and the benefits of irrigation, boating, breeding and landscape can be obtained. In the flood season, it can come before the flood peak, and actively release the sluice in advance to reduce the water level of the main stream. Since the hydropower station where the bell mouth water bag choke dam power generation device is built provides sufficient power, a high-horsepower pumping system can be used for pumping water in different situations and in positive and negative directions. Rubber dams can also play a role in embankment flood resistance and emergency rescue. Using soil bags to build a ditch and placing a rubber dam in it can quickly raise the embankment at least 1m. It can also be easily removed after a flood. Now the big data of weather forecast is rich in information and quite accurate. It is possible to predict floods, rainfall, and flood conditions, and targeted prevention can be achieved. Therefore, the comprehensive management of water conservancy in the Yangtze River and the Pearl River and their basins can be combined with the hydropower station with the construction of the bell mouth water bag-type choke dam power generation device. Even if the flood disaster cannot be completely eradicated, the disaster can be greatly reduced.

my country's water conservancy and hydropower industry is unparalleled in the world, and the accumulated engineering technology, manufacturing capacity and human resources are also the world's first-class. Due to debates and concerns about natural ecology and safety, the benefits of water power cannot be exploited. A hydropower station with a bell mouth water bag-type choke dam power generation device can be used as one of the options, and follow the natural way. Moreover, since the components of the hydropower station where the bell mouth water bag choke dam power generation device is built can be manufactured in the factory according to the standard standard modules, the hydropower industry can increase the production capacity of the manufacturing industry and expand the capacity and scale of the advanced manufacturing industry. In short, with regard to water conservancy and hydropower, the reservoir dam should be suitable, and the blocking dam hydropower should also be suitable. If hydropower becomes the first energy source, the country will be fine.

Claims

A bell-mouth water bag-type choke dam power generation device is a low-dam water conservancy and hydropower technical scheme composed of a bell-mouth water-bag choke dam and a power generation device. The choke dam is built under the water in a suitable river section, and the choke dam is flush with the water surface to slow down the speed of the river water and retain as much flow as possible; the bottom of the choke dam has empty and adjustable The movable fence allows the water flow to pass through at a faster speed, so as to facilitate the removal of sediment in the upstream. It is not necessary to cut off the river, so that aquatic animals can migrate and live in the upstream and downstream. Large or completely blocked, the principle is that the flow of upstream water should not be less than the discharge flow at the bottom plus the power generation flow of the bell mouth water bag. The dam can be automatically loosened and contracted to facilitate smooth drainage. After the flood season, it can be automatically controlled and reassembled to restore the power generation function of the bell-mouth water bag choke dam; the water turbine and generator are installed at the water outlet at the bottom of the bell-mouth water bag to increase the flow rate by using pressure. The water flow impacts the turbine to generate electricity, and the generator integrated with the upper and lower parts of the turbine is installed in a Hengjiang sealed culvert channel under the river bed; each bell-mouth water bag choke dam of the Hengjiang chain is connected to the corresponding section of the Hengjiang sealed culvert channel under the river bed. The water turbine and the internal generator power generation device are combined into a system structure; the bell mouth water bag choke dam is close to the two banks to leave space for the construction of the ship lock or the passage of the waterway; in the weak part of the river embankment in the bend of the big river Build solid sluice gates and add a bell mouth water bag generator.
The bell mouth water bag type choke dam power generation device according to claim 1, the choke dam of single or multiple bell mouth water bags chain Hengjiang is constructed in a suitable river section, and its technical characteristics are: it is flush with the water surface, suitable for The standard conditions of the river section are: the river surface is 100m wide, the water depth is 6m, the flow rate is 1m per second, the inlet bell mouth is 20m wide and 5m high, there is a 1m empty fence from the bottom of the bell mouth to the river bed, and the bottom of the bell mouth water bag is out. The water outlet is 1m square, and the length from the bell mouth to the water outlet at the bottom of the water bag is 60m, which is three times the width of the bell mouth. The bell mouth water bag is a reclining body composed of rigid steel plates on both sides and up and down. There is a drop of 6m from the top of the bell mouth to the bottom of the water outlet of the water bag. There is a 1m slope from the bottom of the bell mouth to the bottom of the water outlet of the water bag. The water inlet of the bell mouth and the bottom to the water inlet of the turbine are empty. The panel and the panels on both sides are connected by hinged hinges, and the two sides are supported by several hydraulic devices at right angles, and the winch pulley wire rope device is used for pulling recovery and tension reset and fixing. The grooves of the upper cover panel are embedded with the panels on both sides. The falcons are embedded in each other and can be disengaged or embedded in a controlled manner. Except that there is a row of ball bearings on the edge of the cover panel on the bell mouth and a ball bearing at the top of the two side panels to reduce frictional resistance, the two sides of the cover panel of the bell mouth are installed from beginning to end. There are grooves, the upper sides of the two side plates are embedded with falcons, and the embedded grooves are connected and fixed. The tail of the upper cover is connected to the top of the turbine with a door hinge. The funnel-shaped water bag with a bell mouth normally enters the water, and the water is discharged under pressure to generate electricity. One or more rigid funnel-shaped water bag choke dams with a bell mouth width of 20m, a height of 5m, and a bottom blank of 1m are linked by one or more monomers. The number of bell mouth water bag monomers is determined by the width of the river surface.
The bell mouth water bag type choke dam power generation device according to claim 1, the bottom of the choke dam is provided with an empty and adjustable movable fence to allow the water flow to pass through at a faster speed, and its technical feature is: the bottom of the bell mouth is 1m away from the river bed. Blank fence, the fence is equipped with a shutter door that can be completely closed or opened, and can automatically adjust the height of the blank fence. The downstream migration, the second is to create and increase the flow of the river bed, which is conducive to sediment discharge, and the third is to be able to adjust and control the flow, and the height of the fence can be closed or reduced to retain the flow. In addition to the flow of the driving power generation device, this is the most important flow control principle for the gate of the bell mouth water bag choke dam. Even if the water depth of the river is insufficient or even very shallow, the fence can be closed first to completely intercept the flow to achieve After a certain water depth, a certain degree of fence is opened to leave a gap for flow through, and only a single bell-mouth water bag choke dam power generation device can be used. Short rivers can retain flow, water and electricity.
The bell-mouth water bag-type choke dam power generation device according to claim 1, the bell-mouth water-bag type choke dam can automatically shrink and recover automatically, and its technical feature is: in the flood season, the four panels of the bell-mouth water bag can be loosened The bell-mouth funnel-shaped water bag can be automatically controlled and reset after the flood season. When the bell-mouth water bag is loosened and shrunk, the inclined string hydraulic pump screw handle of the hydraulic device supported at right angles is erected on both sides of the outside. The panels on both sides are pushed inwards, so that the embedded falcon is released from the groove of the upper cover, and it is poured inward to an angle of 45 degrees. The screw of the pressure pump is released and the pressure is retracted. Press, connect with the two side panels that are falling inward, the gravitational pressure of the cover plate is applied to the top of the two side panels, the ball bearing on the top of the cover plate on the bell mouth and the ball bearing at the top of the two side panels that are falling inward Connected to reduce frictional resistance, it falls horizontally and overlaps on the lower panel of the river bed one after another. It is integrated with the right-angle vertical hydraulic pump device arranged on both sides of the outer side of the bell mouth water bag is a set of winches, pulleys and wire ropes. Pull recovery For the equipment on the side panel, one end of the wire rope is fastened to a ring on the outer upper part of the side panel. When the bell-mouth water bag is released and contracted, the wire rope is also loosened, and finally pressed on the plane under the upper cover, and the bell-mouth water bag begins to reset. When recombining, the vertical hydraulic pumps on both sides of the square bell mouth support the top cover to a certain height, the motor winch tightens the wire rope through the pulley, pulls the two side panels outward to restore to 45 degrees and continues to pull until it is erected, the ball on the top of the side The bearing contacts the ball bearing on the cover and rolls to the top of the two sides, the embedded falcon on the edge of the side panel is re-inserted into the groove of the cover, the wire rope is tightened and fixed, and the bell mouth water bag is restored to its original state.
The bell mouth water bag type choke dam power generation device according to claim 1, a water turbine and a generator are installed at the water outlet at the bottom of the bell mouth water bag, and the water flow impacting the water turbine with the pressure increasing the flow velocity drives the upper and lower integrated generators, its technical characteristics Yes: the water outlet at the bottom of the bell mouth water bag is connected to the water inlet of the turbine, the tail water outlet of the turbine is also flush with the river bed, and the power of the tail water can also wash the sand. In the culvert channel, several generators connected to the turbines outside the culvert channel are placed inside. The turbine and generator are integrated, the generator is on the bottom, and the turbine is on the top. The number of hydro-generator units is determined by the width of the river surface.
The bell-mouth water-bag type choke dam power generation device according to claim 1, each bell-mouth water-bag choke dam of the Hengjiang chain is connected to the external turbine and the inner generator power generation device above the corresponding section of the Hengjiang culvert pipe channel under the river bed. Combined into a system structure, its technical characteristics are: the upper horizontal of the system structure is the power generation device and the sealed horizontal river culvert channel where the generator is placed, the next horizontal of the system structure is the bell mouth of the chained horizontal river, and the upper and lower horizontal lines are connected in the middle of the system structure. It is a bell-mouth water bag. One system structure is a single bell-mouth water-bag type choke dam power generation device. One or more system structures can be connected to form a hydropower station with a bell-mouth water bag type power generation device of different scales. The outlet of the Hengjiang culvert channel is located at In the control building of the power station room on both sides of the river, N hydropower stations with such a system structure, standardized and modularized bell-mouth water bag power generation device can be constructed in cascade along the entire river.
The bell-mouth water-bag-type choke dam power generation device according to claim 1, the bell-mouth water-pocket choke dam is close to the two banks to leave a space for the construction of ship locks or passage waterways, and its technical characteristics are: suitable river The standard of the river section is that the width of the river is 100m and the water depth is 6m. After three standard single chain bell mouth water bag choke dam power generation devices are built in the middle of the river, there are 20m on each side of the river for the construction of ship locks or ship locks on the left and right banks of the upstream and downstream. Passing waterway, it is very important to build a ship lock or passageway. The purpose is to lock the flow of upstream water by opening and closing the upper and lower water locks when passing ships; The part of the choke dam extended to the shore can lock the water pressure of the upstream inflow flow, and concentrate all the water pressure on the power of the river bed, which is used for water generation at the bottom of the bell mouth water bag and for sand flushing of the empty fence; three It is to maintain a water depth of 6m, so that there is no drop between the upstream and downstream of the lock, and the ship can sail smoothly and easily.
The bell mouth water bag type choke dam power generation device according to claim 1, a bell mouth water bag power generation device is built in the weak part of the bend and embankment of the big river, and the technical feature is: connecting the integrated watershed in the river basin The lakes, reservoirs and mountain ponds of the water network system can pass through the sluice during the flood season. According to the principle of flow control, the water volume of the water network and lakes in the main stream embankment of the river can be supplemented, and the benefits of irrigation, boating, breeding and landscape can be obtained. When the flood peak arrives, the sluice will be opened in advance and the water level of the main stream will be reduced. Since the bell mouth water bag power generation device provides sufficient power, a high-horsepower pumping system can be used for different situations and the adjustment and dispatch of the water level in the positive and negative directions. .