Electric power generated in navigation lock

FIELD: water engineering.

SUBSTANCE: invention refers to method and system of electric power generation when water levels in navigation locks change. Navigation lock uses hydraulic turbine and/or pump turbine for maintaining approximately constant value of flow velocities during water drainage through navigation lock within major portion of water transfer cycle, which leads to loss reduction of full head strength, and for recuperating unused hydraulic energy to be generated as electricity. Difference between water levels on the opposite sides of navigation lock forms the potential hydraulic energy. By controlling water drainage, full head energy losses are sufficiently reduced within this period, thus providing possibility of optimising hydraulic energy recuperation.

EFFECT: optimising hydraulic energy recuperation.

16 cl, 2 dwg

 

The technical field

The present invention relates to a method and system for generating electric power during the change in water levels in the ship locks.

The level of technology

Gateway, often in the system of canals, works to connect the two reservoirs with different levels of water by alternately lowering and raising the water level in the gateway. Gateways operate using gravity to transfer the volume of water from one side of the gate, the gateway to the other side. As soon as the water levels are aligned, sluice gates can be opened to the ship passed through the gate.

U.S. patent 4310769, issued January 12, 1982, discloses a system of navigable gateway with one or more underground hydroelectric pumped storage plants, which generate electricity. Water from the ship lock is given at the bottom of the tank when the water level in the shipping gateway goes down. The water passes through the sluice gate and past the turbopump to generate electricity. The reservoir collects water and prevents the loss of the falling down water. The pumps then pump water from a reservoir up in the shipping gateway through sluice gates in order to raise the water level in the gateway. Electricity to run the pump can be supplied from other known energy sources, for example, from tides is about the Liv, wind, solar and other emerging energy sources. Hence the water saved through the use of a turbopump. While this operation conserves water, it is the final consumer of electricity, because electricity generated by the lowering of the water level in the gateway, will be less than the electricity required for pumping the water back into the gateway, overcoming gravity and other losses.

German patent DE 1130766, published may 30, 1962, discloses a power plant, located next to the gateway with a turbo pump to provide a faster and less expensive gateway, where one of the generators can be used to accelerate the operation of the gateway.

However, neither of these two patents do not disclose the recovery of useful unused hydraulic energy to generate electricity. In the traditionally working navigable gateway when operating valves are open, free drainage of water through the system is proportional to the square root of the pressure difference on two sides of the gate gateway. Thus, the water flow rate is usually high at the beginning, and then decreases until the flow of water becomes relatively small to the end of the cycle, water transfer, making it difficult to recover hydraulic energy to generate electricity. Therefore, there is a need in t is m, to be able to get the useful recovery of unused hydraulic energy to generate electricity, taking into account the problems associated with changes in water flow in the water flow.

The invention

The present invention relates to the use of hydraulic turbines and/or turbo pump to maintain flow rates at the outlet of the water in the ship locks at approximately constant value during the greater part of the cycle, water transfer, resulting in a decrease of total energy loss of pressure, and to ensure the recovery of unused hydraulic energy to its generation as electricity. The difference in water levels on opposite sides of the shipping gateway creates a potential hydraulic energy. In the traditional gateways all this energy is dissipated in the pressure loss. The system according to the present invention regulates the diversion of water through the gateway in a downward direction by means of hydraulic turbines and/or pumps. By regulating the diversion of water head loss in a given period of time is decreased very significantly, thereby allowing optimization of hydraulic energy recovery.

According to the present invention is a system for generating electric power, tereasa, at least one gateway for connecting the first reservoir and the second reservoir. The system includes a gateway having a pair of spaced gate to allow passage of vessels in the gateway, and from it, when the gate is alternately opened and closed.

The system includes at least one passage for connecting the gateway to a fluid medium, at least one of the first and second reservoirs. The turbine is located in the message for fluid passage for the fluid to generate electrical power when water flows through at least one passage for the fluid. The system also includes at least one control turbine controller to regulate the speed of flow in the drainage of water through the turbine so that it was within a specified range of flow rates, defined as a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network.

It should be understood that the term "passage for the fluid" is used throughout the description and claims to refer to passages such as culvert pipe that allows water to pass between the reservoirs and/or through a shipping gateway. The passage can be either above ground or below ground. Further what about the should to understand the passage for the fluid medium may be open, partially closed or fully closed passage for the fluid.

Preferably, the means to control the operation of the turbine regulates the flow rate at the outlet of water through the passage for the fluid so that it was within the specified constant range for a significant part of the cycle of raising and lowering of the water level in the gateway. In addition, preferably, the turbine is a turbo pump capable of operating in the mode of the power generation turbine, and inflation. Means control the operation of the turbine switches the turbo pump mode pump to maintain the flow rate at tap water within a specified range of flow velocities before or when the flow velocity at the outlet of the water falls below the specified range of flow rates as the pressure decreases. This preferred characteristic provides the advantage of reducing the cycle of migration compared to the unregulated condition. This latter operating mode pumping occurs within a relatively short period of time compared to the initial operating mode is achieved by generating and generating useful energy.

According to another aspect of the present invention provides a method of generating elec is renergie using the shipping gateway for connecting the first reservoir and the second reservoir, with appropriate water levels. The way out is to change the water level ship lock until the water level of one of the first reservoir and the second reservoir through a turbine to generate electricity with a given flow rate at tap water as a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network.

Preferably, the predetermined range of values of water flow is regulated within a substantial part of the period changes in water level to generate a constant electric power.

The method preferably consists in the following:

raise the water level ship lock through the first turbine, generating electricity, so that the level in the first reservoir corresponds to the first specified range of water flow as a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network; and

lower the water level ship lock through the second turbine, generating electricity, so that the level in the second reservoir corresponds to the second specified range of water flow as a function of one or more requirements regarding time water transfer and maximum performance tour of the ins and capacity requirements of the network.

The first and second ranges of water flow are preferably independent, adjustable over a substantial part of the relevant period raising and lowering for generating first and second constant electric power.

Preferably, the first and second ranges of water flow are the same, and the first and the second constant electric power are the same.

Preferably, the first and second turbines are turbo pump, and the method further includes managing the first and second pumps in the regime of inflation to maintain the flow rate at tap water within a specified range of flow rates at the outlet of the water before or at the same time as the flow rate at the outlet of the water falls below the specified ranges of flow rates at the outlet of the water.

Brief description of drawings

For a better understanding of the nature and purposes of the present invention may be made by reference to the accompanying schematic drawings, on which:

Figure 1 is a view in plan, illustrating the gate of the shipping gateway located between the two reservoirs, with the use of turbines for energy recovery; and

Figure 2 is a side view of the gate of the shipping gateway, shown in figure 1.

Description of the invention

Figure 1 and 2 shows the system 10 gateway channel, which uses two shipping gateway 12 and 14, respectively, located between the upper reservoir 16 and the lower reservoir 18. It should be understood that the number shown gateways of two gateways, but between the reservoirs 16 and 18 could be only one gateway or three, or more gateways.

Each shipping gateway 12 and 14 has a pair of spaced gate 20 for effecting passage of vessels in the shipping gateways 12 and 14 of them when the gate is alternately opened and closed. Shipping gateways 12 and 14 have a common gate between them.

Between the reservoirs 16 and 18 are passages 30 for the current environment, connecting the upper reservoir 16 with shipping gateways 12 and 14 and the lower reservoir 18. The passages 30 for the fluid are underground culvert pipes that communicate with the reservoirs 16 and 18 and shipping gateways 12 and 14 through controlled openings 32 system-level gateways channel.

Figure 2 shows that each of the passages 30 to the fluid contains the first passage 30A, which is located between the upper reservoir 16 and the second shipping gateway 14. In communication with fluid medium within each passage 30A is the turbine 40. It should be understood from Figure 1 that the passages 30A contain two bypass passage extending on the opposite particular system gateway channel. Two turbines 40 shows prefer is Ino below the gate 20; one turbine at each of them, or at the end of the passages 30A. Second passages 30V for the fluid connected with the passages 30A and associated through holes 32 of the gateway 14 to the gateway 16. Advanced steam turbine 42 is located below the total gate 20 between the shipping gateways 12 and 14; one turbine 42 in each of them, or at the end of aisles 30V.

It should be understood that in this embodiment, shipping gateways 12 and 14 can in fact act as the bottom or top of the reservoir, respectively, depending on whether you are watching or not on the shipping gateways 14 and 16 from the bottom of the reservoir 18 or the top of the reservoir 16. That is, this shipping gateway 12 may represent the lower reservoir to shipping to the gateway 14. Alternatively, the shipping gateway 14 may represent the upper reservoir for shipping gateway 12.

Additional passages 30C to fluid communicate between shipping gateway 12 and the lower reservoir 18 through the openings 32 by linking passages 30V with a pair of turbine 44; one turbine 44 is located in each passage 30C carrying fluid, or at the end of one of each such passage.

As shown, all the passages that carry liquid or underground culverts are below the level of the canal system. However, it may be possible that the passages could go to the side or Vert is it the system-level gateways channel.

When the gateway 12 and 14, as shown in figure 2, the right-most gate 20 shipping gateway 14 can be opened, and the vessel may pass between the gateway 14 and the top of the reservoir 16. In this example, the vessel, moving from the top of the reservoir 16 to the lower reservoir 18, the gate 20 between the gateways 14 and 16 would be opened, and the vessel would take place in the shipping gateway 14. After that, these gates are closed. Then the water level in the shipping gateway goes down to the level of the water in the shipping gateway 12. When the water level in the shipping gateway 14 is reduced, the water is sent downstream through the passages 30B and 30C for the fluid past the turbine 42 and past the turbine 44 to the lower reservoir 18. During this period, the flow rate at tap water is regulated by the controller 50. As a result, the controller 50, which controls the operation of the turbine 40, 42 and 44, controls the flow rate at tap water so that loss of hydraulic pressure associated with the lowering of the water level in the shipping gateway 14 is converted by the turbine 42 and 44 into electricity.

As soon as the shipping gateway 14 reaches the level ship lock 12, the gate 20 between the two navigable floodgates opened, and the vessel can enter the shipping gateway 12. After that, the gate is closed and the water level in the shipping gateway 12 is lowered through the water passing through the holes 32 downstream through the passages 30 which, transferring the liquid, and into the holes 32 of the lower reservoir 18. Again the flow rate at tap water is regulated by the controller 50 flow rate at tap water in action or mate with 44 turbines. When the water level in the shipping gateway 12 is the same as in the lower reservoir 18, the gate 20 between the reservoir 18 and the shipping gateway 12 can be opened to effect the movement of ships through the gate.

During reverse operation of the shipping gateway 12 can be lifted from its lower level adjacent to the level of the lower reservoir 18 to its upper level, as shown in figure 2, by means of water diversion downstream from the top of the reservoir 16 through the passages 30A and 30B and through the openings 32 below the gateway 12. As a result, water flows downstream in the passages 30A and 30B by turbines 40 and 42. Again, the controller 50 flow rate at tap water regulates the rate of flow of water along these passages 30A and 30B so that the generated electricity. Similarly, shipping gateway 14 can have a different level of water rises from the lower level to the upper level of the gateway 12 to its upper level corresponding to the level of the reservoir 16, through the passage of the water downstream from the top of the reservoir 16 through the passages 30A and through the openings 32 in the base of the shipping gateway 14. This provides a water flow passage for the fluid crestorbuy 40.

At each of these stages the passage of water through the turbine 40, 42 and 44 causes the generation under the condition that the flow velocity at the outlet of the water remains within the specified speed range. Controller flow rate at tap water is a means of control associated with turbines 40, 42 and 44, which controls the operation of the turbine to regulate the speed of flow in the drainage of water through the passages 30 to the fluid. This flow rate is within a specified range of flow rates, which is defined as a function of one or more of the requirements in relation to the time of transfer water transfer water from one of the upper basin in the shipping gateway or from a ship lock at the bottom of the reservoir, as a function of the maximum turbine performance, which represents the ability of the turbine to carry water through it; or as a function of the power requirements of the local power system in relation to the needs of the network capacity. If you want a very low power in the network, then the controller of the flow velocity at the water diversion would govern the turbine so as to have a low flow rate. If the power requirements of the network are not a significant factor, then the flow velocity represents the velocity of the flow, which turbine can have at the maximum the second water level, in order to accelerate the transfer of water according to the requirements. However, these three functions are related to each other so as to determine the flow rate within the specified range of flow rates. It should be understood that this flow rate must be set within a specified range, so that was a proper recovery of electricity.

Preferably, the turbine is able to operate in the mode of generating power turbine, and inflation. While in the mode of generating power at a constant flow rate determined by the lower pressure turbine to generate electricity. However, as soon as the water flow starts to become significantly smaller, so that the speed falls below a preset level, the turbine is then switched by controller 50 to operate in the mode of pumping to transfer water from the upper reservoir into the lower reservoir with a specific flow rate so as to reduce the time of transfer of water between water bodies according to the requirements.

While the invention has been described in connection with the above variants of implementation, it should be understood that the invention is not limited to the disclosed variants, but on the contrary, it is assumed that it covers various modifications and equivalent circuit, within the spirit and scope of the legal protection of the enclosed formula.

1. Si is theme for the generation of electric power, containing at least one navigable gateway (12, 14) for connecting the first navigable water body (16) and the second navigable water body (18), and shipping gateway (12, 14) has a pair of gates (20) for effecting passage of vessels in the shipping gateway (12, 14) and from it, when the gate (20) alternately open and close at least one passage (30) for fluid connecting the shipping lock (12, 14), at least one reservoir of the first (16) and second (18) of water to allow water flow directly between the gateway (12, 14) and at least one of the first (16) and second (18) reservoirs, the turbine (40, 42, 44), which is placed in communication with fluid medium in the passage (30) for the fluid, with the possibility of generating electrical energy when the water passes through at least one passage (30) for the fluid between the shipping locks (12, 14) and, at least one of the first (16) and second (18) reservoirs, and managing turbine controller (50), arranged to control the speed of the flow at the diversion of water through the turbine (40, 42, 44) so that it falls within a specified range of flow rates, defined as a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network.

2. The system according to claim 1, characterized in that the second reservoir (18) has a level below the first reservoir (16), moreover, at least one passage (30) for the fluid connects the first reservoir (16) with a shipping gateway (12, 14), and turbine (40, 42, 44) generates electric power when water flows downstream through at least one passage (30) for the fluid to raise the water level in the shipping gateway (12, 14) before the first reservoir (16) during a cycle of raising the water level in the shipping gateway.

3. The system according to claim 2, characterized in that the control turbine controller (50) configured to control the speed of the flow at the diversion of water through the passage (30) for the fluid so that it was within the specified constant range for a significant part of the cycle, raising the water level of the gateway.

4. The system according to claim 1, characterized in that the second reservoir (18) has a level below the first reservoir (16), and at least one passage (30) for the fluid connects the first navigable gateway (12, 14) with the second reservoir (18) and the turbine (40, 42, 44), which generates electric power when water flows downstream through at least one passage (30) for the fluid to lower the water level in the shipping gateway (12, 14) to the level of the second reservoir (18) during the cycle of lowering the water in the shipping gateway.

5. The system according to claim 4, characterized in that the control turbine controller (50) configured to control the RMS of the spine of the flow at the diversion of water through the passage (30) for the fluid so that so it was within a specified constant range for a significant part of the cycle of lowering the water level of the gateway.

6. The system according to claim 3, characterized in that the turbine (40, 42, 44) is the turbopump can operate in the mode of generating power turbine, and in the mode of inflation, and referred to the managing turbine controller (50) configured to switch turbopump mode pumping to maintain the flow rate at tap water within a specified range of flow velocities before or when the flow velocity at the outlet of the water falls below the specified range of flow velocities.

7. The system according to claim 5, characterized in that the turbine (40, 42, 44) is the turbopump can operate in the mode of generating power turbine, and in the mode of inflation, and referred to the managing turbine controller (50) configured to switch turbopump mode pumping to maintain the flow rate at tap water within a specified range of flow velocities before or when the flow velocity at the outlet of the water falls below the specified range of flow velocities.

8. The system according to claim 1, characterized in that the water flows downstream through at least one passage (30) for the fluid to raise the water level in the lock (12, 14) to the level of the first what about the reservoir (16) during a cycle of raising the water level gateway; the system further comprises at least one second passage (30) for fluid connecting the gateway (12, 14) with the second reservoir (18), a second turbine (42, 44)located in the second passage (30) for the fluid, with the possibility of generating electric power when water flows down through the at least one second passage (30) for the fluid to lower the water level in the lock (12, 14) to the level of the second reservoir (18) during the cycle demotion water in the shipping gateway, while managing the turbine controller includes at least one control turbine controller (50), arranged to control the speed of the flow at the diversion of water through the at least one first and at least one of the second passages (30A, 30B, 30C) for the fluid, and the corresponding turbine and at least one second turbine (40, 42, 44) so that the speed falls within a specified range of flow rates, defined as a function of one or more requirements time water transfer, maximum turbine performance and capacity requirements of the network.

9. The system of claim 8, wherein managing the turbine controller (50) configured to regulate the speed of flow of the draining independently through each of the passes: at least one first and at m is re, one of the second passages (30A, 30B, 30C) for a fluid medium so that each such speed was within a specified range of flow rates for a substantial part of the corresponding cycle of lowering or raising the water level in the lock.

10. The system of claim 8, wherein the first and second turbines, each are turbopump can operate in the mode of generating power turbine, and in the mode of inflation, and referred to the managing turbine controller (50) configured to switch turbopump mode pumping to maintain the flow rate at tap water within a specified range of flow velocities before or when the flow velocity at the outlet of the water falls below the specified range of flow velocities.

11. Method of generating electricity using at least one of the shipping gateway (12, 14) for connecting the first navigable water body (16) and the second navigable water body (18)having appropriate levels of water and having a turbine (40, 42, 44), generating electricity, placed at least in one passage (30) for the fluid, which connects the shipping gateway (12, 14), at least one of the first reservoir (16) or the second reservoir (18)to ensure flow water directly between the shipping locks (12, 14) and, at the ore, one of the reservoirs: the first reservoir (16) and a second reservoir (18)containing phase: change in water level ship lock (12, 14) to the level of the water, at least one first reservoir (16) and a second reservoir (18) through the turbine (40, 42, 44), generating electricity in a given range of flow rate at tap water, which is a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network.

12. The method according to claim 11, wherein the specified range of flow rate at tap regulate water for a significant part of the period changes in water level to generate the first constant electric power.

13. The method according to claim 11, characterized in that the second reservoir (18) is the water level below the first reservoir (16), in this stage of the changes in water level is as follows: raise the water level ship lock (12, 14) through a first turbine (40, 42), generating electricity, to water level of the first reservoir (16) with a flow rate in the first specified range flow rate at tap water as a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network, and lower the water level shipping gateway (12, 14) through the WTO is th turbine (42, 44), generating electricity, to the level of the second water reservoir (18) with a flow rate in the second specified range flow rate at tap water as a function of one or more of the requirements in relation to the time of transfer of water, the maximum turbine performance and capacity requirements of the network.

14. The method according to item 13, wherein the first and second ranges of flow rate at tap water independently regulate during a substantial part of the relevant period raising and lowering for generating first and second constant electric power.

15. The method according to 14, characterized in that the first and second ranges of flow rate at tap water are the same, and the first and the second constant electric power is the same.

16. The method according to item 15, wherein the first and second turbines (40, 42, 44) are the pumps, and the method further consists in the fact that control the first and second turbo pump mode pump to maintain flow rates at the outlet of the water in predetermined ranges of the flow velocity at the outlet of the water before or when the flow velocity at the outlet of the water falls below the specified ranges of flow rate at tap water.



 

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3 cl, 12 dwg

FIELD: transport.

SUBSTANCE: invention relates to water transport and is intended for cargo loading and unloading on/from vessels. Method for heavy-weights loading-unloading on/from vessels (2) includes wharf device (7) with access ramp (8), execution of bottom sand bed in dock chamber (3) with pump station equipped with gate (4), installation of ramp between wharf and vessel for loading-unloading heavy-weights by highway freighter. To execute loading-unloading a vessel is led into dock chamber, dock gate is closed, water is pumped out of chamber until vessel is sitting on bed. The access ramp is made with side walls top edges of which coincide with top of dock chamber walls.

EFFECT: higher reliability of loading-unloading in conditions of variable water levels in water body.

2 cl, 6 dwg

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