瑞典专利SE0950556A1 A sea-based power plant system

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29/06 2010 15235 FAX 0046831676? GPOIII_Å_CO -> FV Reg STOCKHOLM IQIUZZ / Ußß 0046831676? 17 SUMMARY The present invention relates to a sea-based power plant system (10) operable to generate energy. The system (10) comprises a water supply system (18), a floating platform (20) and a power system (22). The water supply system (18) comprises at least one pipe member (24) connected to a reservoir (26) comprising the platform (20). Each pipe means (24) comprises a conveyor (28) drivable for transporting water with a first temperature, Tj, from an end part (30) of the pipe means (24) to the reservoir (26). The power system (22) further comprises a heating machine system (32) comprising n number of energy cells, where n is an integer, and n.>. The heating machine system (32) further comprises a heating source (14), and a cooling sink (16), both of which are connected to the energy cells. The heat source (14) receives water with a second temperature, T2, from the vicinity of the surface of the water, and the cooling sink (16) receives water with the first temperature, Tj, from the reservoir (26), where Tg> T1. Each energy cell is drivable to generate a pressurized fluid when a phase change material (PCM), contained in each erferg cell, changes from solid phase to surface phase. The power system (22) further comprises a hydraulic system (38) connected to the heating machine system (32), and drivable to produce a constant rotational speed. (Fig. 1)
公开号:SE0950556A1
申请号:SE0950556
申请日:2009-07-14
公开日:2011-01-15
发明作者:Bengt Oestlund
申请人:Exencotech Ab；
IPC主号:

专利说明:

The power plant comprises at least one compressed gas storage device, at least one gas compression device connected to said at least one compressed gas storage device, and at least one gas utilization device connected to said at least one compressed gas storage device.
U.S. Patent 4,450,014 relates to a platform for utilizing the thermal energy of the lake, comprising a surface structure supporting a downwardly extending tube for receiving cold water and supporting at least two power modules each comprising an evaporator and a condenser and pumps. for circulating hot and cold water, each power module being connected to a turbine-driven generator set. The platform is characterized in that the support structure has open cells which receive the power modules and that each module has its component parts arranged in a vertical system so as to form a cylindrical assembly extending through the support structure. Preferred applications: marine production of aluminum, ammonia and hydrogen.
The patent document US 6, 100, 600 relates to a sea-based power plant system with a surface or an anchored support structure with a number of energy converters for regenerative forms of energy. Energy-producing devices are provided to produce a continuous energy supply by means of at least two different methods from regenerative energy sources, the regenerative energy sources being seawater, ocean waves, wind and solar radiation. In addition, at least one industrial production device and an underwater device for reverse osmosis are included. In order to increase the concentration of energy production, support structures with their various treatment devices and energy producing devices are combined in groups and are connected to a common supply network. A process control unit that controls the entire grouping of processing devices and energy producing devices provides an optimized operation of all components of the sea-based power plant system.
Summary of the Invention The above-mentioned problems are solved with a sea-based power plant system drivable to generate energy according to claim 1. The sea-based power plant system comprises a water supply system, a surface platform and a power system. The water supply system comprises at least one pipe member connected to a reservoir included in the surface platform. Each pipe means comprises a conveyor drivable for transporting water with a first temperature, T1, from an end part of the pipe means to the reservoir. The power system comprises a heating machine system comprising n number of energy cells, where n is an integer, and n 2 1. The heating machine system further comprises a heat source connected to the first energy cell and a cooling sink connected to the last energy cell.
The heat source receives water with a second temperature, Tg, via a first feed pipe from the vicinity of the water surface and the cooling sink receives water with the first temperature, T1, from the reservoir via a second feed pipe, whereby Tg> T1. Each energy cell is drivable to generate a pressurized fluid when a phase change material (PCM) contained in each energy cell changes from solid phase to surface phase.
The power system further includes a hydraulic system connected to the heating machine system and drivable to produce a constant rotational speed.
A main advantage of this system is that it is possible to use a temperature difference between T2 and T1 which is very low with an acceptable efficiency and cost.
An additional advantage in this context is achieved if the pipe members are axed to each other. This provides a stable construction that resists sea waves.
In addition, it is an advantage in this context if the at least one conveyor is in the form of an electric or hydraulic pump member located in the end part of the pipe member.
According to another embodiment, it is an advantage if said at least one conveyor is in the form of an electric or hydraulic propeller member located in the end part of the pipe member.
According to yet another embodiment, it is an advantage in this context if the at least one conveyor is in the form of a PCM-based water carrier which uses temperature differentials for autonomous propulsion in the pipe member.
An additional advantage in this context is achieved if the reservoir is thermally isolated from the surrounding water. This increases the efficiency.
In addition, it is an advantage in this context if the level of the water in the reservoir is lower than or equal to the level of the water outside the ﬂ surface platform. A further advantage in this context is achieved if the hydraulic system comprises a pressure transducer, and a hydraulic motor with a variable displacement, and connected to the pressure transducer. This makes it possible to generate a constant rotational speed.
In addition, it is an advantage in this context if the power system further comprises an electric generator means connected to the hydraulic motor and drivable to generate electricity with a specific frequency and amplitude, and a control system drivable to control the process performance based on real-time measurements of time, fate, temperature. and press. This makes it possible to generate electricity with the same benefits as stated above. In addition, it is also possible to optimize process performance.
A further advantage in this context is achieved if the energy cells are drivable between a first phase and a second phase, wherein, during the first phase, every second energy cell produces pressurized fluid, and every other energy cell cools down, and vice versa during the second phase.
It should be noted that the term "includes" as used in this specification is intended to denote the presence of a given characteristic, property, units, components or groups thereof.
Embodiments of the invention will now be described with reference to the accompanying drawings, in which: Brief Description of the Drawings Fig. 1 shows a schematic view of a sea-based power plant system 10 according to the present invention; Fig. 2 shows a schematic view of a power system or means 22 according to the present invention; Fig. 3 shows a schematic view of the surface platform 20 with the reservoir 26; Fig. 4 shows a schematic view of the water carrier 28 in a first state; Fig. 5 shows a schematic view of the water carrier 28 in a second condition; Fig. 6 schematically shows a configuration with two groups of energy cells 12 included in a power system 22; Fig. 7 schematically shows a configuration with six groups of energy cells 12 connected in series and included in a power system 22; Fig. 8 is a block diagram of a first embodiment of a hydraulic system 38 according to the present invention; Fig. 9 is a block diagram of a second embodiment of a hydraulic system 38 according to the present invention; Fig. 10 is a block diagram of a first embodiment of a pressure transducer 40 according to the present invention; and Fig. 11 is a block diagram of a second embodiment of a pressure transducer 40 according to the present invention.
Detailed Description of the Preferred Embodiments I ﬁ g. 1 shows a schematic view of a sea-based power plant system 10 according to the present invention. The lake-based power plant system 10 is drivable to generate energy, and comprises essentially a water supply system 18, a surface platform 20 and a power plant or system 22. In the general case 24, where m is an integer and m 2 is 1. For simplicity sake is shown in ﬁ g. 1 only two pipe members 241 and 242. One comprises the water supply system 18 m number of pipe members 241, third pipe member is further indicated by a dashed line. The two pipe members 241 and 242 are connected to a reservoir 26 included in the platform 20.
As also shown in ﬁ g. 1, each tubing member 241 and 242 includes a conveyor 281 and 282 operable to transport water having a first temperature, T1, from an end portion 301 and 302 of the tubing members 241 and 242 to the reservoir 26. In other words, cold water is transported from the depths of the sea to the reservoir 26 by means of the conveyors 281 and 282. The power plant 22 further comprises a heating machine system 32 (compare ﬁ g. 2) comprising n number _, 12 ,, (compare ﬁ g. 6 and 7), where n is an integer, and n 2 1.
The energy cells 121, energy cells 121, 12 may be connected in a sequence.
The heating machine system 32 further comprises a heat source 14 connected to the first energy cell 121 and a cooling sink 16 connected to the last energy cell 12,1.
The heat source 14 receives water with a second temperature, T2, via a first feed pipe 34 (compare ﬁ g. 3) from the vicinity of the surface of the water. The temperature T2 corresponds to the temperature of the sea surface. The cooling sink 16 receives water with the first temperature, T1, from the reservoir 26 via a second feed pipe 36 (compare Fig. 3). For the offshore power plant system 10 to work, the following condition must be met T2> T1. In a most preferred embodiment, T2 - T1 is 26 ° C. Each energy cell 121; 12.1 is drivable to generate a pressurized fluid when a phase change material (PCM) is included in each energy cell 121; ...; 12.1 changes from solid phase to ﬂ surface phase. The power plant 22 further comprises a hydraulic system 38 (compare ﬁ g. 2) connected to the heating machine system 32, and which is drivable to generate a constant rotational speed.
According to a preferred embodiment of the sea-based power plant system, the pipe means 241, ..., 24.1 ﬂ are axed to each other. This means that the construction will be stable and able to withstand sea waves.
According to an alternative, the conveyor 281 may be in the form of an electric or hydraulic pump member 281 located in the end portion 301 of the tubular member 241.
According to another alternative, the conveyor 281 may be in the form of an electric or hydraulic propeller member 281 also located in the end portion 301 of the pipe member 241.
According to a third alternative, the conveyor 281 may be in the form of a PCM-based water carrier 281 which uses temperature differentials for autonomous propulsion in the pipe member 241. For a more detailed description of the water carrier 28, compare Figs. 4 and 5 and the corresponding description.
It is pointed out that in the same sea-based power plant system 10, a combination of two or three of the different examples of conveyor 28 may coexist. In order to increase the efficiency of the lake-based power plant system, the reservoir 26 is thermally isolated from the surrounding water.
According to a preferred embodiment, the level of the water inside the reservoir 26 should be lower than or equal to the level of the water outside the surface platform 20. This ratio is shown in Fig. 1, where the water level in the reservoir 26 is lower than the water level in the sea, i.e., outside the ﬂ performing platform 20.
According to another embodiment of the sea-based power plant system 10, the hydraulic system 38 comprises a pressure transducer 40 (compare ﬁ g. 10 and 11), and a hydraulic motor 42 connected to the pressure transducer 40.
Fig. 2 shows a schematic view of the power system or plant 22 according to the present invention. The heating machine system 32 comprises or is connected to a heat source 14, and a cooling sink 16. As further shown in ﬁ g. 2, the power plant 22 further includes a hydraulic system 38 connected to the heating machine system 32, and drivable to produce a constant rotational speed.
The power plant 22 further comprises an electric generator means 44 connected 7 to the hydraulic system 38, and more precisely to the hydraulic motor 42. The electric generator means 44 is drivable to generate electricity with a specific frequency and amplitude. As also shown in ﬂ g. 2, the power plant 22 further includes a controllable control system 46 for controlling process performance based on real-time measurements of time, fate, temperature, and pressure.
According to a preferred embodiment of the sea-based power plant system, the energy cells 121, 12, are drivable between a first phase and a second phase, wherein, during the first phase, every second energy cell produces pressurized fluid and every other energy cell cools down, and vice versa during the second phase.
Fig. 3 shows a schematic view of the surface platform 20 included in the sea-based power plant system 10 according to the present invention.
As shown in ﬁ g. 3, the surface platform 20 comprises a reservoir 26 intended for storing water. l ﬁ g. 3 also shows a first supply pipe 34 for supplying hot water from the surface of the sea to the heat source 14 (compare ﬁ g. 2). In addition, a second feed pipe 36 is shown for feeding water from the reservoir 26 to the cooling sink 16 (compare ﬁ g. 2). It is pointed out that the water in the reservoir 26, which has been transported from the depths of the sea, has a temperature which is lower than the temperature of the surface water. As also shown in Fig. 3, there is also a water flushing pipe 110 for flushing out wastewater from the lake-based power plant system 10. lfig. 4 shows a schematic view of the PCM-based water carrier 28 in a first state, and in ﬁ g. 5 is a schematic view of the water carrier 28 in a second condition. As shown in both ﬁ g. 4 and 5, the water carrier 28 includes a high pressure vessel 282, high pressure gas 284, ambient water 286, a gas passage 288, water inlet / outlet 290, a main piston 292, phase change material (PCM), ﬂs 294, a slave piston 296 and an ib exile membrane 298 The main and slave pistons 292 and 296 are connected via a rod to a gas equalization channel 288.
The operation of the water carrier 28 will now be described with reference to the first. 4 and then to ﬁ g. 5. The first state shown in Fig. 4 is when it ﬂ surfaces. Cold water from the bottom is cooled by PCM, which freezes and shrinks.
The pistons 292 and 296 are forced down by the gas 284. As the slave piston 296 moves, it pushes the water out of the vessel 282, thus making the vessel 282 lighter. The vessel 282 ﬂ thus surfaces up to the water surface. The second condition shown in Fig. 5 is when it drops. Hot water from the surface heats up the PCM, which melts and expands. The main piston 292 is forced up by the PCM. The slave piston 296 is forced up by the connecting rod. The gas 284 is compressed and acts as a spring. As the slave piston 296 moves, it leaves room for ambient water to fill the membrane 298 thus making the vessel 282 heavier, due to the fact that water has a higher density than PCM. The vessel 282 sinks to the bottom. Since the gas chambers 284 are connected, the gas pressure on both pistons 292 and 296 thus increases the spring force.
The surface platform 20 may also be constructed of concrete, steel, composites or other materials suitable for offshore use for a long time. The surface platform 20 can also accommodate other machines, for example for the production of hydrogen gas. The floating platform 20 will allow ships to dock and helicopters to land.
It is also pointed out that the conveyor 28 must be ib visibly mounted to allow service and repair at the service level. Fig. 6 schematically shows a configuration with two groups of energy cells 12 included in a power system or plant 22. As schematically shown in ﬁ g. 6, the energy cells 121-124 are connected, and operate in parallel, and the energy cells 125-128 are connected, and operate in parallel. l ﬁ g. 6 also shows the heat source 14 connected to the energy cells, and the cooling sink 16 connected to the energy cells. In addition, i ﬁ g. 6 also shows the hydraulic system 38 connected to the heating machine system 32 (not shown in ﬁ g. 6) comprising the energy cells 121-128. In the first part of the cycle (Phase 1; P1), the heat source 14 heats the energy cells 121-124, while the cooling sink 16 cools the energy cells 125-128. In the second part of the cycle (Phase 2; P2), the heat source 14 heats the energy cells 125-128, while the cooling sink 16 cools the energy cells 121-124. The temperature difference between the heat source 14 and the cooling sink 16 is adapted to the selected PCM characteristics.
It must normally be at least 20 ° C in order to obtain an acceptable efficiency and power output.
I ﬁ g. 7 schematically show a configuration with six groups of energy cells included in a power system 22. Groups A 1.1, A 2.1 and A 3.1 are connected in series and groups B 1.1, B 2.1 and B 3.1 are also connected in series, in order to reuse heat and increase efficiency. Also shown in ﬁ g. 7, the heat source 14 is connected to the energy cells 12, and the cooling sink 16 is also connected to the 9 energy cells 12. In addition, in ﬁ g. 7 also shows the hydraulic system 38 connected to the heating machine system 32 (not shown in ﬁ g. 7) comprising all the energy cells 12. In the first part of the cycle (Phase 1; P1), the heat source 14 heats the energy cells 12 in the group A 1.1, meaning that PCM in these energy cells melts. Excess heat from the energy cells in group A 2.1 is used to heat the energy cells in group A 3.1. This means that the PCM in the energy cells 12 in A 2.1 freezes and the PCM in the energy cells 12 in A 3.1 melts. Excess heat from the energy cells in group B 1 .1 is used to heat the energy cells in group B 2.1. This means that PCM in the energy cells in B 1.1 freezes and PCM in the energy cells in B 2.1 melts. The cooling sink 16 cools the PCM in the energy cells 12 in B 3.1. In the second part of the cycle (Phase 2; P2), the heat source 14 heats the energy cells 12 in group B 1.1, meaning that the PCM in these energy cells melts. Excess heat from the energy cells in B 2.1 is used to heat the energy cells in B 3.1. This means that the PCM in the energy cells in B 2.1 freezes and the PCM in the energy cells in B B 3.1 melts. Excess heat from the energy cells in group A 1.1 is used to heat the energy cells in group A 2.1. This means that the PCM in the energy cells 12 in A 1.1 freezes and the PCM in the energy cells 12 in A 2.1 melts. The cooling sink 16 cools the energy cells 12 in group A 3.1, meaning that the PCM in the energy cells 12 in A 3.1 freezes.
According to a preferred embodiment of the power system 22, the energy cells 121-12n are connected in a sequence, and the heat source 14 is connected to the first energy cell 121, and the cooling sink 16 is connected to the last energy cell 12n.
During the first phase, every second energy cell 121, 123, 125, pressurized ﬂ uidum, and every other energy cell 122 produces 124, 12, _. cooled down, and vice versa during the second phase. Reuse can be performed in one or more steps. Each step requires a temperature difference between the heat source 14 and the cooling sink 16 of approximately ° C. For example, if we have a heat source 14 at 80 ° C and a cooling sink 16 at ° C, we can reuse heat in two steps, ie, 2 x 3 groups with energy cells 12 (as in ﬁ g. 7).
According to a further embodiment, the pressure transducer 40 is drivable to reduce the pressure in the pressurized fluid from the energy cells 121-12n.
In addition, the hydraulic motor 42 in the power system 22 is drivable to generate the constant rotational speed during variable torque. l ﬁ g. 8 is a block diagram of a first embodiment of a hydraulic system 38 in accordance with the present invention. The embodiment shown in ﬁ g. 8 includes a hydraulic motor 42 for operating an electric generator to generate electrical energy. In addition, the hydraulic system 38 also includes a first hydraulic pressure generator 21A and a second hydraulic pressure generator 21B, both in hydraulic communication with the hydraulic motor 42. It is noted that each of the hydraulic pressure generators 21A and 21B corresponds to and is equal to the heating machine system 32 described earlier in this specification. The first and second hydraulic pressure generators 21A, 21B are both drivable to transfer hydraulic energy to the hydraulic motor 42. As shown in ﬁ g. 8, the first and second hydraulic pressure generators 21A, 21B are mutually hydraulically connected in parallel. The first and second hydraulic pressure generators 21A, 21B are arranged to operate in cycles so that the first hydraulic pressure generator 21A delivers an output while the second hydraulic pressure generator 21B has an input, while the first hydraulic pressure generator 21A has an input at the same time as the second hydraulic pressure generator 21 B delivers an output. The first and second hydraulic pressure generators 21A, 21B are arranged to operate with a mutual phase difference of approximately 180 degrees. The hydraulic system 38 further comprises a number of non-return valves 1, 2 and 8. The inflow to the hydraulic pressure generators 21A, 21B has a base pressure and passes the control valve 1. Outflow passes the non-return valve 2. The flow passing the point xl block diagram comes either from the first hydraulic pressure generator 21A or from the second hydraulic pressure generator 21B. In addition, the hydraulic system 38 also includes a pressure transducer 40 connected between the hydraulic pressure generators 21A and 21B and the hydraulic motor 42. The pressure transducer 40 is drivable to lower the hydraulic pressure from a higher pressure in a tilluidum to a lower pressure in the .uidet. This will ensure a high reliability in operation and a long service life of the hydraulic motor 42.
In order to protect the hydraulic motor 42 from an excessive pressure, the hydraulic system 38 further comprises a pressure reducing valve 9 which bypasses a gap next to the hydraulic motor 42 at an excessive working pressure. In order to protect the hydraulic motor 42 against cavitation, there is a non-return valve 8 in the hydraulic system 38. The non-return valve 8 is drivable to prevent the pressure in front of the hydraulic motor 42 from being lower than the base pressure.
Cavitation can occur if the ﬂ fate of the pressure transducer 40 is temporarily too low or if the displacement is too high in relation to the ﬂ fate.
The hydraulic motor 42 may be, for example, an asynchronous machine with four poles or a synchronous machine with four poles, both of which provide a constant rotational speed at a constant power frequency. After the hydraulic motor 42, a small part of the pass passes to a base unit 6 via a pressure reducing valve 5 which regulates the base pressure.
As also shown in ﬁ g. 8, the hydraulic system 38 also includes a fate accumulator 7 operable to stabilize the base fate of the system 38.
In addition, it may be justified to have a fate accumulator 7 in the hydraulic system 38 if the input to and from the output of the hydraulic pressure generators 21A, 21 B - conductes a lot or if the return output from the base unit is too low.
It is pointed out that it is possible to have more than one hydraulic motor 42 in the hydraulic system 38 (not shown in any gear). If your hydraulic motors 42 are connected for the operation of the generator, at least one of the hydraulic motors 42 shall have a variable displacement.
When the hydraulic pressure generator 21A has completed half its cycle, i.e., when it has reached 180 degrees, energy is still stored in the ﬂ uidet.
Now the pressure will decrease during the following process and when the pressure has decreased to p1, the displacement of the hydraulic motor 42 will also start to decrease. The hydraulic motor 42 will still have the same rotational speed but the torque delivered to the generator will decrease in relation to the reduction of the displacement and the pressure. The energy delivered to the generator will decrease faster and faster. Most of the energy stored in the ﬂ uidet will be transferred to the generator during this phase.
The outflow of ﬂ uidum from the hydraulic pressure generators 21A, 21B starts with a certain delay due to the fact that the pressure must be increased before a ﬂ fate is possible. As long as the pressure from the hydraulic pressure generator 21A is higher than the pressure from the hydraulic pressure generator 21B, the non-return valve 1 will be closed. The flow of ﬂ uidum at the point x in the block diagram shown in Fig. 8 basically comes from the hydraulic pressure generator 21A from the point when the working cycle (360 degrees) of the hydraulic pressure generator 21A has passed a number of degrees until it has passed more than half its cycle. . For the rest of the time 12, the fate will of course come from the hydraulic pressure generator 21B. Assuming that the hydraulic pressure generator 21A is started at phase zero, and if the delay corresponds to 40 degrees of the cycle, then the fate at point x will come from the hydraulic pressure generator 21A below 40-220 degrees, from the hydraulic pressure generator 21B below 220- 400 degrees and from the hydraulic pressure generator 21A below 400-580 degrees. lfig. 9 is a block diagram of a second embodiment of a hydraulic system 38 in accordance with the present invention. In this embodiment there is only one hydraulic pressure generator 21A, and consequently only one non-return valve each of 1 and 2, as shown in ﬂ g. 9. Another difference between the embodiments shown in ﬂ g. 8 and 9 is that in this second embodiment there is also a fate accumulator 1000 and a valve 11. The other similar elements which occur in both embodiments have been provided with the same reference numerals and will not be described in detail again.
As shown in Fig. 9, the output from the pressure transducer 40 is connected to the output accumulator 1000 via the valve 11, and to the hydraulic motor 42 which in turn drives an electric generator.
The flow accumulator 1000 has a relatively high charge pressure and the pressure is assumed to increase to the maximum operating pressure when it has reached the maximum charge. The flow accumulator 1000 is operable to accumulate när uidum when a de fate from the hydraulic pressure generator 21A is greater than an intended ﬂ fate to the hydraulic motor 42, and to deliver id uidum when the ﬂ fate of the hydraulic pressure generator 21A is less than the intended ﬂ fate of the hydraulic motor 42. .
The valve 11 is either open or closed, which is controlled either hydraulically or electrically.
It is pointed out that there are mainly three different pressure levels in the hydraulic system 38: a basic pressure pvvket is prevailing downstream in relation to the hydraulic motor 42 and the non-return valve 1, and also between the non-return valves 1, 2 when there is an inlet to the hydraulic pressure generator 21A; an actuating high pressure p2 which prevails between the non-return valves 1, 2 at discharge and between the non-return valve 2 and the pressure transducer 40; an actuating operating pressure p3 between the pressure transducer 40 and the hydraulic motor 42. 13 According to an embodiment of the hydraulic system 38, at least one of the hydraulic pressure generators 21A, 21B is a pump. The pump can also be linear with a pressure stroke for ﬂ uidum delivery and a return stroke for ﬂ uidum suction. l ﬁ g. 10 is a block diagram of a first embodiment of a pressure transducer 40 according to the present invention. The pressure transducer 40 is operable to transform a pressure of one fluid from one pressure level Pin to another pressure level Put. This embodiment shown in ﬁ g. 10 comprises a pair of hydraulic rotating machines A, B which are mutually mechanically connected in such a way that the first machine A can drive the second machine B.
Machines A, B are mounted in a substantially closed space, and each of the machines A, B is in hydraulic connection with the closed space. As also shown in ﬁ g. 10, each of the machines A, B is provided with a hydraulic inlet (Pm) and a hydraulic outlet (Put). It is pointed out that the embodiment shown in ﬁ g. 10 is used to reduce the pressure of the id uidet. This means that each of the machines A, B is in hydraulic connection with the closed space via the hydraulic outlet (Put). If, on the other hand, the pressure transducer 40 is to be used to increase the pressure of the (uidet, (not shown in the ﬁ gures), each of the machines A, B is in hydraulic connection with the closed space via the hydraulic inlet. In the embodiment shown in ﬁ g. 10, the closed space is in hydraulic connection with a pressure source with the pressure level Put, the hydraulic rotary machine A is in hydraulic connection with a pressure source with pressure level Pin and the hydraulic rotary machine B is hydraulically connected with a pressure source with pressure level 0 bar. If the machines A, B are of the same size, and the normal maximum pressure is 200 bar, then the embodiment shown is shown. 10 to give the figures 400 bar for Pin and 200 bar for Put.
According to an embodiment of the pressure transducer 40, the mutually mechanically connected machines A, B are connected via at least one shaft coupling.
According to one embodiment of the pressure transducer 40, all the machines A, B have open connections with the drainage connections and the closed space in such a way that pressure balancing prevails. This ensures that the pressure inside and the pressure outside the closed room are equal. l ﬁ g. 11 shows a block diagram of a second embodiment of a pressure transducer 40 according to the present invention. In this embodiment of the pressure transducer 40 there are two closed spaces, each comprising two hydraulic rotary machines A, B. The hydraulic rotary machines A, B are mutually mechanically connected in such a way that for each pair of machines A, B and for each closed room, the first machine A can run the second machine B. As shown in ﬁ g. 11, the pressure transducer 40 is provided with a hydraulic inlet (Piu) and a hydraulic outlet (Put). In addition, machine A in the left pair of machines is hydraulically connected to the second, right space, while machine B in the right pair of machines is hydraulically connected to the first, left space. It is pointed out that the embodiment shown in ﬁ g. 11 is used to reduce the pressure of the ﬂ uidet. Using the same pressure levels as in Fig. 10, in the case shown in ﬁ g. 11, i.e., if two pressure transducers 40 according to ﬁ g. 10 are connected in accordance with ﬁ g. 11, to give the figures 600 bar for Pu, and 200 bar for Put.
The same applies to the case where three pressure transducers 40 according to Fig. 10 are connected in series (not shown), i.e., it will give the digits 800 bar for Pin and 200 bar for Put.
The invention is not limited to the described embodiments. It will be apparent to those skilled in the art that many different embodiments are possible within the scope of the following claims.

权利要求:
Claims (9)
[1]
A sea-based power plant system (10) operable to generate energy, said sea-based power plant system (10) comprising a water supply system (18), a surface platform (20) and a power system (22), characterized in that, 24111) connected to a reservoir (26) included in the surface platform (20), m being a water supply system (18) comprising at least one pipe member (241, .. integer, and m 2 1, each pipe member (241, 24111) comprising a conveyor (281 ; 28111) operable to transport water having a first temperature, T1, from an end die (301; .. the power system (22) comprises a heating machine system (32) comprising n number 1211), where n is an integer, and n 2 2, which heating machine system (32) further comprises a heat source (14) connected to it.; 30111) by the tubes (241; ...; 24111) to the reservoir (26), and by that energy cells (121, the first energy cell (121), and a cooling sink (16) connected to the last energy cell (1211), the heat source (14) receiving r water with a second temperature, Tg, via a first feed pipe (34) from the vicinity of the surface of the water, and by the cooling sink (16) receiving water with the first temperature, T1, from the reservoir (26) via a., 1211) is operable to generate a pressurized fluid when a phase change material (PCM) is contained in second feed tubes (36), wherein T; > T1, wherein each energy cell (121, .. each energy cell (121, ..., 12,1) changes from solid phase to ﬂ surface phase, and in that the energy cells (121, 1211) are drivable between a first phase and a second phase, wherein, during the first phase, every second energy cell (121, 123, 125, ...) produces pressurized ﬂ uidum, and every second energy cell (122, 124, 126, ...) cools down, and vice versa during the second phase, and in that the power system (22) further comprises a hydraulic system (38) connected to the heating machine system (32), which hydraulic system (38) comprises a hydraulic motor (42) drivable to produce a constant rotational speed during variable torque and variable displacement .
[2]
A sea-based power plant system (10) drivable for generating energy according to claim 1, characterized in that said at least two pipe means (241, 24111) are axed to each other.
[3]
A sea-based power plant system (10) drivable for generating energy according to claim 1 or 2, characterized in that at least one of the conveyors (281, 20 28111) is located in the form of an electric or hydraulic pump means (281, 28111) in the end portion (301, 30111) of the tube member (241, 24111).
[4]
A sea-based power plant system (10) drivable for generating energy according to claim 1 or 2, characterized in that at least one of the conveyors (281, 28111) is in the form of an electric or hydraulic propeller means (281, 28111) located in the end part (301 , 30111) by the pipe member (241, 24111).
[5]
A sea-based power plant system (10) drivable for generating energy according to claim 1 or 2, characterized in that at least one of the conveyors (281, 28111) is in the form of a PCM-based water carrier (281, 28111) which uses temperature differentials for autonomous propulsion in the pipe means (241, 24111).
[6]
A lake-based power plant system (10) drivable for generating energy according to any one of claims 1-5, characterized in that the reservoir (26) is thermally isolated from the surrounding water.
[7]
A sea-based power plant system (10) drivable for generating energy according to any one of claims 1-6, characterized in that the level of the water in the reservoir (26) is lower than or equal to the level of the water outside the floating platform (20).
[8]
A sea-based power plant system (10) drivable for generating energy according to any one of claims 1-7, characterized in that the hydraulic system (38) further comprises a pressure transducer (40) connected to the hydraulic motor (42), and drivable for convert a pressure of ﬂ uidet from one pressure level (Pin) to another pressure level (Put).
[9]
A sea-based power plant system (10) drivable for generating energy according to claim 8, characterized in that the power system (22) further comprises an electric generator means (44) connected to the hydraulic motor (42) and drivable for generating electricity with a specific frequency. and amplitude, and a control system (46) operable to control process performance based on real-time measurements of time, fate, temperature and pressure.

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同族专利:

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引用文献:

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

法律状态:

优先权:

申请号 | 申请日 | 专利标题

SE0950556A|SE534198C2|2009-07-14|2009-07-14|A sea-based power plant system|SE0950556A| SE534198C2|2009-07-14|2009-07-14|A sea-based power plant system|

US13/383,437| US9169852B2|2009-07-14|2010-07-12|Hydraulic pressure transducer and hydraulic system|

PCT/SE2010/050810| WO2011008158A1|2009-07-14|2010-07-12|Hydraulic pressure transducer and hydraulic system|

EP10800114.0A| EP2454488B1|2009-07-14|2010-07-12|Hydraulic pressure transducer and hydraulic system|

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