CN116816747A - Energy storage and power generation integrated hydraulic system - Google Patents
Energy storage and power generation integrated hydraulic system Download PDFInfo
- Publication number
- CN116816747A CN116816747A CN202310758516.1A CN202310758516A CN116816747A CN 116816747 A CN116816747 A CN 116816747A CN 202310758516 A CN202310758516 A CN 202310758516A CN 116816747 A CN116816747 A CN 116816747A
- Authority
- CN
- China
- Prior art keywords
- cavity
- hydraulic
- pressure
- power generation
- energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 54
- 238000004146 energy storage Methods 0.000 title claims abstract description 32
- 230000033001 locomotion Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 17
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 2
- 210000001503 joint Anatomy 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 13
- 230000000694 effects Effects 0.000 description 9
- 230000006872 improvement Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 5
- 238000007667 floating Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/027—Check valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention relates to the technical field of hydraulic pressure, in particular to an energy storage and power generation integrated hydraulic system which is matched with a wave energy capturing structure for use, and comprises a pressure-resistant cylinder, a hydraulic rod and a plurality of one-way valves, wherein the hydraulic rod is connected with the wave energy capturing structure, at least four cavities are divided into the pressure-resistant cylinder, and the cavities are connected through the one-way valves; the hydraulic rod, the air bag, the hydraulic medium and the control and power generation device are arranged in at least four cavities; the hydraulic rod makes reciprocating rectilinear motion in the pressure-resistant cylinder, pressure in at least four cavities is changed through the reciprocating rectilinear motion, a hydraulic medium flows through the at least four cavities through the one-way valve, all components are integrated integrally through the plurality of cavities, energy storage and power generation are integrated, a large amount of space is saved, the arrangement of a large amount of hydraulic pipelines is reduced, and energy loss is also reduced; meanwhile, as each cavity corresponds to each working link, each working link is in butt joint by adopting a one-way valve, and the problems of leakage and aging of the hydraulic pipeline are avoided.
Description
Technical Field
The invention relates to the technical field of hydraulic pressure, in particular to an energy storage and power generation integrated hydraulic system.
Background
The hydraulic system takes hydraulic medium as medium, and increases and transmits power by compressing and discharging the hydraulic medium. The hydraulic systems can be divided into two categories: a hydraulic drive system and a hydraulic control system.
The hydraulic transmission system takes power transmission and movement as main functions. Hydraulic control systems are designed to meet specific performance requirements (in particular dynamic performance) with respect to the output of the hydraulic system, which is generally referred to as the hydraulic transmission system.
A complete hydraulic system is generally composed of five parts, namely a power element, an actuator element, a control element, an auxiliary element (accessory) and a hydraulic medium.
In the existing hydraulic device (namely a hydraulic wave energy capturing structure) for wave energy power generation, wave energy is converted into mechanical energy by utilizing the reciprocating motion of a hydraulic cylinder, so that larger installed power and stable output can be realized.
The hydraulic transmission system in the hydraulic wave energy capturing structure consists of components such as a hydraulic cylinder, an energy accumulator, a hydraulic motor, a generator and the like, the components are connected by adopting a hydraulic pipeline and a valve group, the connecting pipeline is complex and long, the hydraulic energy loss is large, the system reliability is reduced, and the required arrangement space is increased. This is difficult to do for floating wave energy capturing structures without a foundation platform at sea, and increases the construction and operation costs of the device, the risk of wind and wave resistance, and at the same time is unfavorable for the device to develop toward miniaturization and simplification.
Disclosure of Invention
The invention aims at: in order to solve the problems of the prior art, namely the problems of complex hydraulic system, huge structure, high energy loss along the journey, low reliability and large arrangement space, the invention provides an energy storage and power generation integrated hydraulic system integrating energy storage and power generation into a whole, and the miniaturization of wave energy and the high-efficiency conversion of energy are realized.
In order to solve the problems existing in the prior art, the invention adopts the following technical scheme:
the energy storage and power generation integrated hydraulic system is matched with a wave energy capturing structure for use, and comprises a pressure-resistant cylinder, a hydraulic rod and a plurality of one-way valves, wherein the hydraulic rod is connected with the wave energy capturing structure, the wave energy power generation drives the hydraulic rod to do reciprocating linear motion in the pressure-resistant cylinder, at least four cavities are divided into the pressure-resistant cylinder, and the cavities are connected through the one-way valves;
the at least four cavities comprise a first cavity, a second cavity, a third cavity and a fourth cavity, wherein the first cavity is internally provided with the hydraulic rod, the second cavity is internally provided with the air bag, the third cavity is internally provided with the hydraulic medium, and the fourth cavity is internally provided with the control and power generation device;
the hydraulic rod makes reciprocating rectilinear motion in the pressure-resistant cylinder, the pressure in at least four cavities is changed through the reciprocating rectilinear motion, and the hydraulic medium flows through the at least four cavities through the one-way valve.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, the first cavity, the second cavity, the third cavity and the fourth cavity are all coaxially arranged with the pressure-resistant cylinder, and the first cavity is positioned on the axis of the pressure-resistant cylinder;
the first cavity is in a hollow cylinder shape, and the second cavity and the third cavity are semi-circular annular cylinders and are symmetrically arranged between the first cavity and the inner side wall of the pressure-resistant cylinder;
the fourth cavity is arranged below the first cavity, the second cavity and the third precondition
The cross-sectional shape of the third cavity is in a knife shape, and comprises an upper semicircular ring part and a lower semicircular ring part which are communicated, wherein the depth of the upper semicircular ring part is the same as that of the first cavity and the second cavity, and the depth of the lower semicircular ring part is the same as that of the fourth cavity.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, the bottom of the hydraulic rod is provided with a sealing part, a fifth cavity is formed by the sealing part and the bottom surface of the first cavity, and the fifth cavity is respectively communicated with the second cavity and the third cavity.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, the diameter of the sealing component is the same as the inner diameter of the first cavity, and the sealing component can reciprocate in the pressure-resistant cylinder along with the hydraulic rod.
As an improvement of the technical scheme of the energy storage and power generation integral integrated hydraulic system, a plurality of one-way valves comprise a first one-way valve, a second one-way valve, a third one-way valve and a fourth one-way valve;
the first one-way valve is communicated with the fifth cavity and the third cavity, and the hydraulic medium flows from the third cavity to the fifth cavity;
the second one-way valve is communicated with the second cavity and the fifth cavity, and the hydraulic medium flows from the fifth cavity to the second cavity;
the third one-way valve is communicated with the second cavity and the control and power generation device, and the hydraulic medium flows from the second cavity to the control and power generation device;
the fourth one-way valve is communicated with the control and power generation device and the third cavity, and the hydraulic medium flows from the control and power generation device to the third cavity.
The control and power generation device comprises a controller, a hydraulic motor, a generator and a coupler, wherein the generator is connected with the hydraulic motor through the coupler;
the hydraulic motor is arranged in the fourth cavity, an oil inlet of the hydraulic motor is communicated with the second cavity, and an oil outlet of the hydraulic motor is communicated with the third cavity through the fourth one-way valve;
the controller is arranged between the third one-way valve and the oil inlet of the hydraulic motor, and is used for detecting the pressure in the second cavity and controlling the opening and closing of the third one-way valve.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, an exhaust channel is arranged between the pressure-resistant cylinder and the second cavity, and the exhaust channel is communicated with the fifth cavity.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, the third cavity is further provided with an interface communicated with the outside, and the interface is used for inputting or discharging the hydraulic medium.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, the air bag comprises an initial state and a use state, and when the air bag is in the initial state, the air bag is pre-filled with gas with a first gas amount; when the air bag is in a use state, the air bag is filled with gas with a second gas quantity, and the second gas quantity can enable the air bag to fill the inner cavity of the second cavity; the first amount of gas is less than the second amount of gas.
As an improvement of the technical scheme of the energy storage and power generation integrated hydraulic system, the pressure-resistant cylinder is an energy storage, oil storage and/or power generation pressure-resistant cylinder.
The invention has the beneficial effects that:
in the invention, the components are integrated integrally through a plurality of cavities, and the energy storage, the energy storage and the power generation are integrated, so that a large amount of space is saved, the cavities are communicated through the one-way valve, the arrangement of a large number of hydraulic pipelines is reduced, and the loss in the energy transmission process is also reduced; meanwhile, as each cavity corresponds to each working link, each working link is in butt joint by adopting a one-way valve, and the problems of leakage and aging of the hydraulic pipeline are avoided. Moreover, the hydraulic medium directly flows back through the one-way valve arranged at the bottom of the cavity, so that the phenomenon that the hydraulic oil is foamed can be avoided, and the safety of equipment is threatened.
Drawings
FIG. 1 is a front view of a wave energy capturing structure of the present invention.
Fig. 2 is a top view of a wave energy capturing structure of the present invention.
Fig. 3 is a left side cross-sectional view of a wave energy capturing structure according to the present invention.
Reference numerals illustrate: 1-a hydraulic rod; 2-a pressure-resistant cylinder; 3-a first cavity; 4-a second cavity; 5-a third cavity; 6-a fourth cavity; 7-a sealing member; 8-an exhaust port; 9-a hydraulic medium; 10-an air bag; 11-1-a first one-way valve; 11-2-a second one-way valve; 11-3-third one-way valve; 11-4-fourth check valve; 12-1-oil inlet; 12-2-oil outlet; 13-a controller; 14-a hydraulic motor; 15-an electric generator; 16-interface; 17-fifth cavity.
Detailed Description
In order to make the objects, technical solutions and advantageous effects of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments of the present invention.
As shown in fig. 1 to 3, the energy storage and power generation integrated hydraulic system is matched with a wave energy capturing structure for use, the energy storage and power generation integrated hydraulic system comprises a pressure-resistant cylinder 2, a hydraulic rod 1 and a plurality of one-way valves, the hydraulic rod 1 is connected with the wave energy capturing structure, and the wave energy capturing structure drives the hydraulic rod 1 to do reciprocating linear motion in the pressure-resistant cylinder 2, and the energy storage and power generation integrated hydraulic system is characterized in that at least four cavities are divided into the pressure-resistant cylinder 2, and the cavities are connected through the one-way valves;
the at least four cavities comprise a first cavity 3, a second cavity 4, a third cavity 5 and a fourth cavity 6, wherein the first cavity 3 is internally provided with a hydraulic rod 1, the second cavity 4 is internally provided with an air bag 10, the third cavity 5 is internally provided with a hydraulic medium 9, and the fourth cavity 6 is internally provided with a control and power generation device;
the hydraulic rod 1 makes a reciprocating rectilinear motion in the pressure-resistant cylinder 2, and the pressure in at least four cavities is changed through the reciprocating rectilinear motion, and the hydraulic medium 9 flows through the at least four cavities through the one-way valve.
When the hydraulic medium 9 is used, the hydraulic rod 1 reciprocates in the first cavity 3, so that the pressure between the cavities is changed, and the flowing effect of the hydraulic medium 9 is realized through the change of the pressure; in the invention, the cavities are communicated with each other, and the effect of controlling the flow of the hydraulic medium 9 between different cavities is realized through the one-way valve, so that the arrangement of connecting pipelines is omitted, the required arrangement space is reduced, and the floating wave energy capturing structure is suitable for a marine foundation-free platform.
In the present invention, the pressure-resistant cylinder 2 is a pressure-resistant cylinder that can store energy, oil, and/or generate electricity.
In detail, in the present invention, since the pressure-resistant cylinder 2 is connected with the wave energy capturing structure, when the wave energy capturing structure collects wave energy along with waves, the obtained wave energy is stored in the pressure-resistant cylinder 2 after being converted into hydraulic energy, that is, the energy storage effect is achieved through the pressure-resistant cylinder 2; moreover, since the pressure-resistant cylinder 2 stores the hydraulic medium 9, that is, the pressure-resistant cylinder 2 achieves the effect of storing oil, wherein the oil refers to the hydraulic medium 9; moreover, since the pressure-resistant cylinder 2 is also internally provided with a control and power generation device, the power generation effect can be realized through the pressure-resistant cylinder 2.
Further, the first cavity 3, the second cavity 4, the third cavity 5 and the fourth cavity 6 are all coaxially arranged with the pressure-resistant cylinder 2, and the first cavity 3 is positioned on the axis of the pressure-resistant cylinder 2;
the first cavity 3 is in a hollow cylinder shape, the second cavity 4 and the third cavity 5 are semi-circular cylinders and are symmetrically arranged between the first cavity 3 and the inner side wall of the pressure-resistant cylinder 2;
the fourth cavity 6 is arranged below the first cavity 3, the second cavity 4 and the third precondition
The cross section shape of the third cavity 5 is in a knife shape, and comprises an upper semicircular ring part and a lower semicircular ring part which are communicated, wherein the depth of the upper semicircular ring part is the same as the depth of the first cavity 3 and the second cavity 4, and the depth of the lower semicircular ring part is the same as the depth of the fourth cavity 6.
In detail, each cavity may have a different shape, so long as the effect of communicating the cavities through the check valve can be achieved. In the present invention, the preferred shape and arrangement of the individual cavities is as described above. More preferably, the pressure-resistant cylinder 2 is a cylindrical hollow cylinder, the inner wall of which is smooth and can be of a thickness which varies depending on the pressure to be borne.
The hydraulic rod 1 is a cylindrical hollow rod which is coaxial with the pressure-resistant cylinder 2, the length of the hydraulic rod is larger than the depth of the first cavity 3, one end of the hydraulic rod 1 outside the pressure-resistant cylinder 2 is connected with a wave-absorbing floating body of the wave energy capturing structure, and the effect that the hydraulic rod 1 reciprocates in the pressure-resistant cylinder 2 is achieved under the action of the wave-absorbing floating body in the wave energy capturing structure.
Further, the bottom of the hydraulic rod 1 is provided with a sealing part 7, the sealing part 7 and the bottom surface of the first cavity 3 form a fifth cavity 17, and the fifth cavity 17 is respectively communicated with the second cavity 4 and the third cavity 5. The hydraulic stem 1 is provided with a sealing member 7 at one end in the pressure-resistant cylinder 2, the sealing member 7 may be a sealing ring or a sealing gasket, the diameter of which is the same as the inner diameter of the first cavity 3, and the sealing member 7 may reciprocate in the first cavity 3 along with the hydraulic stem 1. The sealing member 7 may seal the hydraulic medium 9 in the fifth chamber 17, preventing the hydraulic medium 9 from leaving the pressure-resistant cylinder 2.
In some embodiments of the present invention, the plurality of check valves includes a first check valve 11-1, a second check valve 11-2, a third check valve 11-3, and a fourth check valve 11-4; the first check valve 11-1 communicates the fifth chamber 17 and the third chamber 5, and the hydraulic medium 9 flows from the third chamber 5 to the fifth chamber 17; the second one-way valve 11-2 is communicated with the second cavity 4 and the fifth cavity 17, and the hydraulic medium 9 flows from the fifth cavity 17 to the second cavity 4; the third one-way valve 11-3 is communicated with the second cavity 4 and the control and power generation device, and the hydraulic medium 9 flows from the second cavity 4 to the control and power generation device; the fourth check valve 11-4 communicates the control and power generation device with the third chamber 5, and the hydraulic medium 9 flows from the control and power generation device to the third chamber 5.
In some embodiments of the invention, the control and power generation device comprises a controller 13, a hydraulic motor 14, a generator 15 and a coupling, wherein the generator 15 is connected with the hydraulic motor 14 through the coupling;
the hydraulic motor 14 is arranged in the fourth cavity 6, the oil inlet 12-1 of the hydraulic motor 14 is communicated with the second cavity 4, and the oil outlet 12-2 of the hydraulic motor 14 is communicated with the third cavity 5 through the fourth one-way valve 11-4;
the controller 13 is arranged between the third one-way valve 11-3 and the oil inlet 12-1 of the hydraulic motor 14, and the controller 13 is used for detecting the pressure in the second cavity 4 and controlling the opening and closing of the third one-way valve 11-3.
In some embodiments of the present invention, the bladder 10 includes an initial state and a use state, and when the bladder 10 is in the initial state, the bladder 10 is internally pre-filled with a first amount of gas; when the air bag 10 is in the use state, the air bag 10 is filled with a second gas amount of gas, and the second gas amount enables the air bag 10 to fill the inner cavity of the second cavity 4; the first amount of gas is less than the second amount of gas. The air bag 10 is inflated in the same manner as the prior art, and as an example of the prior art, the air bag 10 may be externally connected with an inflator, and the inflator is communicated with the air bag 10 through an inflation tube so as to inflate the air bag 10.
In some embodiments of the invention, a vent channel is provided between the pressure-resistant cylinder 2 and the second chamber 4, the vent channel being in communication with the fifth chamber 17. In detail, the exhaust passage is located between the second chamber 4 and the pressure-resistant cylinder 2, communicating with the fifth chamber 17. The exhaust passage is communicated with the outside, and when the hydraulic rod 1 reciprocates in the pressure-resistant cylinder 2 in use, the effect of exhausting or supplementing gas to the fifth cavity 17 can be achieved through the exhaust hole. As an embodiment of the present invention, the exhaust passage is communicated with the fifth chamber 17, and the exhaust passage is located at one side of the first chamber 3, and the exhaust hole of the exhaust passage is provided at the upper portion of the second chamber 4.
In some embodiments of the invention, the third chamber 5 is further provided with a port 16 communicating with the outside, the port 16 being for the input or discharge of the hydraulic medium 9.
When the wave energy capturing device is used, under the action of waves, the wave absorbing floating body of the wave energy capturing structure reciprocates to drive the hydraulic rod 1 to reciprocate along the first cavity 3.
When the hydraulic rod 1 moves in the direction of exiting the first cavity 3, that is, when the hydraulic rod 1 extends outward, the volume of the fifth cavity 17 gradually increases, and the pressure in the fifth cavity 17 decreases, the pressure balance in the fifth cavity 17 is broken, and the hydraulic medium 9 is pressed into the fifth cavity 17 through the first check valve 11-1.
When the hydraulic rod 1 is retracted into the first chamber 3, i.e. when the hydraulic rod 1 is retracted inwards, the volume in the fifth chamber 17 gradually decreases and the pressure in the fifth chamber 17 increases, the pressure balance in the fifth chamber 17 is broken and the hydraulic medium 9 is pressed into the second chamber 4 through the second one-way valve 11-2.
The above-described movement is repeated and the low-pressure hydraulic medium 9 in the third chamber 5 is pressed into the second chamber 4.
As the hydraulic medium 9 in the second chamber 4 increases gradually, the bladder 10 in the second chamber 4 is compressed, and the pressure in the second chamber 4 increases gradually, and the pressure of the hydraulic medium 9 in the second chamber 4 increases accordingly.
At this time, when the controller 13 monitors that the pressure in the second chamber 4 reaches a preset pressure value, the third check valve 11-3 is opened, and the high-pressure hydraulic medium 9 in the third chamber 5 is instantaneously released.
The high-pressure hydraulic medium 9 enters the hydraulic motor 14 through the oil inlet 12-1 of the hydraulic motor 14, so that the generator 15 is driven to rotate to do work, and electric power is generated.
The energy of the high-pressure hydraulic medium 9 is converted into a low-pressure hydraulic medium 9 after passing through the hydraulic motor 14, and flows into the third chamber 5 through the fourth check valve 11-4. At this time, the hydraulic medium 9 in the third chamber 5 is gradually released, the pressure in the third chamber 5 is gradually reduced, and the volume of the air bag 10 is gradually increased under the action of the internal gas pressure, and the air bag gradually returns to its original state.
When the pressure in the third chamber 5 gradually increases and exceeds the preset value, part of the hydraulic medium 9 directly flows into the third chamber 5 without passing through the third check valve 11-3.
All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Claims (10)
1. The energy storage and power generation integrated hydraulic system is matched with a wave energy capturing structure for use, and comprises a pressure-resistant cylinder, a hydraulic rod and a plurality of one-way valves, wherein the hydraulic rod is connected with the wave energy capturing structure, and the wave energy power generation drives the hydraulic rod to do reciprocating linear motion in the pressure-resistant cylinder;
the at least four cavities comprise a first cavity, a second cavity, a third cavity and a fourth cavity, wherein the first cavity is internally provided with the hydraulic rod, the second cavity is internally provided with the air bag, the third cavity is internally provided with the hydraulic medium, and the fourth cavity is internally provided with the control and power generation device;
the hydraulic rod makes reciprocating rectilinear motion in the pressure-resistant cylinder, the pressure in at least four cavities is changed through the reciprocating rectilinear motion, and the hydraulic medium flows through the at least four cavities through the one-way valve.
2. The energy-storage power generation integral hydraulic system according to claim 1, wherein the first cavity, the second cavity, the third cavity and the fourth cavity are all coaxially arranged with the pressure-resistant cylinder, and the first cavity is positioned on an axis of the pressure-resistant cylinder;
the first cavity is in a hollow cylinder shape, and the second cavity and the third cavity are semi-circular annular cylinders and are symmetrically arranged between the first cavity and the inner side wall of the pressure-resistant cylinder;
the fourth cavity is arranged below the first cavity, the second cavity and the third precondition
The cross-sectional shape of the third cavity is in a knife shape, and comprises an upper semicircular ring part and a lower semicircular ring part which are communicated, wherein the depth of the upper semicircular ring part is the same as that of the first cavity and the second cavity, and the depth of the lower semicircular ring part is the same as that of the fourth cavity.
3. The energy-storage power generation integral hydraulic system according to claim 1, wherein a sealing component is arranged at the bottom of the hydraulic rod, a fifth cavity is formed by the sealing component and the bottom surface of the first cavity, and the fifth cavity is respectively communicated with the second cavity and the third cavity.
4. The energy-storing and power-generating integrated hydraulic system according to claim 3, wherein the diameter of the sealing member is the same as the inner diameter of the first chamber, and the sealing member is reciprocable with the hydraulic rod in the pressure-resistant cylinder.
5. The energy-storing and power-generating integrated hydraulic system of claim 3, wherein the plurality of check valves includes a first check valve, a second check valve, a third check valve, and a fourth check valve;
the first one-way valve is communicated with the fifth cavity and the third cavity, and the hydraulic medium flows from the third cavity to the fifth cavity;
the second one-way valve is communicated with the second cavity and the fifth cavity, and the hydraulic medium flows from the fifth cavity to the second cavity;
the third one-way valve is communicated with the second cavity and the control and power generation device, and the hydraulic medium flows from the second cavity to the control and power generation device;
the fourth one-way valve is communicated with the control and power generation device and the third cavity, and the hydraulic medium flows from the control and power generation device to the third cavity.
6. The energy-storage and power-generation integrated hydraulic system according to claim 5, wherein the control and power generation device comprises a controller, a hydraulic motor, a generator and a coupling, and the generator is connected with the hydraulic motor through the coupling;
the hydraulic motor is arranged in the fourth cavity, an oil inlet of the hydraulic motor is communicated with the second cavity, and an oil outlet of the hydraulic motor is communicated with the third cavity through the fourth one-way valve;
the controller is arranged between the third one-way valve and the oil inlet of the hydraulic motor, and is used for detecting the pressure in the second cavity and controlling the opening and closing of the third one-way valve.
7. The energy-storage power generation integral hydraulic system according to claim 3, wherein an exhaust passage is provided between the pressure-resistant cylinder and the second chamber, and the exhaust passage is communicated with the fifth chamber.
8. The energy-storage power generation integral hydraulic system according to claim 1, wherein the third cavity is further provided with an interface communicated with the outside, and the interface is used for inputting or discharging the hydraulic medium.
9. The energy-storage power generation integral hydraulic system according to claim 1, wherein the air bag comprises an initial state and a use state, and when the air bag is in the initial state, the air bag is pre-filled with a first amount of gas; when the air bag is in a use state, the air bag is filled with gas with a second gas quantity, and the second gas quantity can enable the air bag to fill the inner cavity of the second cavity; the first amount of gas is less than the second amount of gas.
10. The energy-storage and power-generation integrated hydraulic system according to claim 1, wherein the pressure-resistant cylinder is an energy-storage, oil-storage and/or power-generation pressure-resistant cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310758516.1A CN116816747A (en) | 2023-06-26 | 2023-06-26 | Energy storage and power generation integrated hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310758516.1A CN116816747A (en) | 2023-06-26 | 2023-06-26 | Energy storage and power generation integrated hydraulic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116816747A true CN116816747A (en) | 2023-09-29 |
Family
ID=88117967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310758516.1A Pending CN116816747A (en) | 2023-06-26 | 2023-06-26 | Energy storage and power generation integrated hydraulic system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116816747A (en) |
-
2023
- 2023-06-26 CN CN202310758516.1A patent/CN116816747A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8590296B2 (en) | Systems and methods for reducing dead volume in compressed-gas energy storage systems | |
| US8479505B2 (en) | Systems and methods for reducing dead volume in compressed-gas energy storage systems | |
| US8578708B2 (en) | Fluid-flow control in energy storage and recovery systems | |
| US8359856B2 (en) | Systems and methods for efficient pumping of high-pressure fluids for energy storage and recovery | |
| KR101493126B1 (en) | Systems and methods for energy storage and recovery using rapid isothermal gas expansion and compression | |
| US8997475B2 (en) | Compressor and expander device with pressure vessel divider baffle and piston | |
| US20110056368A1 (en) | Energy storage and generation systems and methods using coupled cylinder assemblies | |
| CN209943030U (en) | Hydraulically-driven two-stage continuous booster-type ultrahigh-pressure hydrogen compressor main engine | |
| KR102405267B1 (en) | Fluid compression device | |
| CN202612230U (en) | Fluid supercharging device | |
| CN112594233A (en) | Pressure boost oil feeding system | |
| CN105201926A (en) | Internal temperature control liquid piston device capable of isothermally compressing and releasing air on basis of air storage units | |
| CN116816747A (en) | Energy storage and power generation integrated hydraulic system | |
| US7165951B2 (en) | High-pressure generating device | |
| CN212055335U (en) | Isolated fluid pressure conversion device with linked hydraulic bag and piston | |
| CN109989871B (en) | Array wave energy power generation hydraulic circuit based on multi-cavity hydraulic cylinder continuous phase control | |
| CN209800429U (en) | Cam plunger type hydraulic high-frequency high-voltage pulse impact test device | |
| CN221003323U (en) | High-voltage energy storage power generation system | |
| CN216043934U (en) | Natural gas pressure energy utilization system | |
| CN112576425A (en) | Water turbine | |
| CN211343525U (en) | Energy storage type hydraulic system | |
| CN112664487B (en) | Circulating type equal-ratio pressure-reducing high-voltage power generation device | |
| US20240052820A1 (en) | Transfer compressor and high-pressure gas station using the same | |
| KR101447004B1 (en) | System and method for energy storage and/or recovery by isothermal process of compressed gas | |
| CN117249125A (en) | High-voltage energy storage power generation system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |