CN116854194A - Seawater hydraulic direct-drive type multifunctional complementary seawater desalination system - Google Patents
Seawater hydraulic direct-drive type multifunctional complementary seawater desalination system Download PDFInfo
- Publication number
- CN116854194A CN116854194A CN202310673572.5A CN202310673572A CN116854194A CN 116854194 A CN116854194 A CN 116854194A CN 202310673572 A CN202310673572 A CN 202310673572A CN 116854194 A CN116854194 A CN 116854194A
- Authority
- CN
- China
- Prior art keywords
- seawater
- energy
- pressure
- pump
- capturing device
- 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
- 239000013535 sea water Substances 0.000 title claims abstract description 200
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 44
- 230000000295 complement effect Effects 0.000 title claims abstract description 23
- 238000011084 recovery Methods 0.000 claims abstract description 49
- 238000004146 energy storage Methods 0.000 claims abstract description 42
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 35
- 239000012528 membrane Substances 0.000 claims abstract description 30
- 230000006641 stabilisation Effects 0.000 claims abstract description 30
- 238000011105 stabilization Methods 0.000 claims abstract description 30
- 239000013505 freshwater Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000012267 brine Substances 0.000 claims description 20
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 20
- 230000000087 stabilizing effect Effects 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 230000033228 biological regulation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The invention discloses a seawater hydraulic direct-drive type multifunctional complementary seawater desalination system, which comprises a wind energy capturing device, a wave energy capturing device, an energy storage and pressure stabilization device, a seawater desalination and energy recovery module, a fresh water tank and a control module; the wind energy capturing device drives a seawater pump to provide seawater with preset pressure through a wind turbine; the wave energy capturing device provides seawater with preset pressure through the floater and the seawater hydraulic cylinder; the seawater desalination and energy recovery module is used for desalinating seawater through a reverse osmosis membrane and recovering energy through an energy recovery and pressurizing device. The invention realizes multi-energy complementation by means of the sea water direct drive and the energy recovery device improves the energy utilization efficiency of the system, so that the system does not depend on external energy input and the fresh water yield is stable. In addition, the working medium is seawater, has no pollution to the environment and is completely compatible with the environment.
Description
Technical Field
The invention belongs to the technical field of sea water desalination, and particularly relates to a sea water hydraulic direct-drive type multifunctional complementary sea water desalination system, in particular to a sea water hydraulic direct-drive type sea water desalination system with energy recovery and wave energy, ocean current energy and wind energy complementary functions.
Background
China is a country with serious shortage of fresh water resources, and the total amount of the fresh water resources is 2.8 trillion cubic meters, but the water per capita is only 1/4 of the worldwide water per capita. The desalination of sea water is to produce fresh water by sea water desalination, which is an open source increment technology for realizing sea water resource utilization, and can increase the total amount of fresh water and stably supply fresh water resource for water resource deficient areas. The sea water desalination methods used in the industry at present are sea water freezing method, distillation method, electrolysis method, reverse osmosis method and the like, wherein the reverse osmosis method has become the main stream of the market.
In the reverse osmosis sea water desalination process, the whole energy consumption of the system is larger due to low water yield and high operation pressure. Traditional reverse osmosis systems rely on an external high pressure pump to provide circuit pressure, and more than 50% of the pressure energy is stored in high-pressure strong brine filtered by a reverse osmosis membrane, and recovery and utilization of the pressure energy by adopting an energy recovery technology are key measures for reducing the energy consumption of the system and improving the operation efficiency.
With the continuous development of new energy technology, novel clean energy sources such as wind energy, wave energy and solar energy gradually show superiority relative to fossil energy sources, and have infinite potential for human development. At present, most of seawater desalination systems rely on external input of a motor, and residual pressure energy of high-pressure strong brine passing through a reverse osmosis membrane is converted into electric energy to be stored, so that a complicated energy transmission process inevitably generates loss, and the efficiency is reduced.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a seawater hydraulic direct-drive type multifunctional complementary seawater desalination system, which solves the problems of low energy utilization efficiency, dependence on external input and incompatibility with the environment of the existing seawater desalination system.
In order to achieve the above object, the present invention provides the following solutions:
a seawater hydraulic direct-drive type multifunctional complementary seawater desalination system comprises a wind energy capturing device, a wave energy capturing device, an energy storage and pressure stabilization device, a seawater desalination and energy recovery module and a fresh water tank; the wind energy capturing device and the wave energy capturing device are respectively connected with the energy storage and voltage stabilization device; the energy storage and pressure stabilization device comprises two energy storage and pressure stabilization branches which are summarized at an outlet pipeline of the energy storage and pressure stabilization device and are connected with the sea water desalination and energy recovery module; the sea water desalination and energy recovery module is connected with the fresh water tank.
Preferably, the wind energy capturing device is connected with the energy storage and voltage stabilization device through a water outlet pipeline of the wind energy capturing device; the wave energy capturing device is connected with the energy storage pressure stabilizing device through a water outlet pipeline of the wave energy capturing device.
Preferably, the wind energy capturing device comprises a seawater filter, a turbine pump and a seawater supply pump driven by the turbine, which are sequentially connected through pipelines; the wind energy capturing device directly absorbs seawater from the external environment and supplies the seawater to the seawater desalination system, and meanwhile, the turbine pump can complement high pressure requirements caused by too high installation positions of the seawater pump driven by the wind turbine under ocean current driving, so that the turbine pump works normally.
Preferably, the seawater desalination and energy recovery module comprises an energy recovery and pressurization device, a reverse osmosis membrane group, a water outlet flowmeter and an inlet throttle valve; the energy recovery and pressurization device comprises: the seawater hydraulic pump is connected with the outlet pipeline of the energy storage and voltage stabilization device and the inlet of the reverse osmosis membrane group, and the seawater hydraulic motor is connected with the high-pressure strong brine outlet of the reverse osmosis membrane group; when the seawater with preset pressure after energy storage and pressure stabilization flows to the throttle inlet valve, the system is in a starting stage, the throttle inlet valve is fully opened, the seawater with the preset pressure fully enters the reverse osmosis membrane group, the rest high-pressure strong brine flows to the seawater hydraulic motor from the high-pressure strong brine outlet of the reverse osmosis membrane group to drive the seawater hydraulic pump to rotate, after the seawater hydraulic pump is started, the throttle inlet valve gradually reduces the opening degree, after the rotating speed of the seawater hydraulic pump is stabilized, the throttle valve is fully closed, so that the seawater with the preset pressure is fully pressurized by the seawater hydraulic pump, and then enters the reverse osmosis membrane group; the desalted seawater flows out of an outlet pipeline of the reverse osmosis membrane group and enters the fresh water tank for storage; the rest high-pressure strong brine is discharged to the external environment through the seawater hydraulic motor, and the power is further supplemented for the seawater hydraulic pump, so that the energy recovery process is realized.
Preferably, the turbine pump, the wind turbine driven sea water supply pump and the sea water hydraulic pump in the energy recovery and pressurization device are all variable pumps.
Preferably, a water level sensor is arranged in the fresh water tank and is used for feeding back the state of the water tank in time.
Preferably, the system further comprises a control module, wherein the control module is used for monitoring the rotation speeds of the two hydraulic motors in the turbine pump, the sea water supply pump driven by the wind turbine, the energy recovery and pressurization device, the dynamic characteristic curve of the floater, the water level of the fresh water tank and the time-varying curves of the corresponding monitoring quantities of the first inlet pressure gauge, the second inlet pressure gauge, the outlet pressure gauge and the water outlet flow gauge so as to feed back the working state of the system.
Preferably, the control module is further used for simultaneously controlling the turbine pump, the sea water supply pump driven by the wind turbine, the sea water hydraulic pump in the energy recovery and pressurization device to change the displacement, and the opening degree of the throttle inlet valve, and corresponding regulation and control are performed under the condition that the working state of the system is obtained.
Compared with the prior art, the invention has the beneficial effects that:
(1) The system of the invention takes ocean energy as the energy input of the whole system, designs a complementary structure among various energy supplementing devices, ensures higher utilization rate of the system to ocean energy, and ensures that the working medium in the system is seawater.
(2) The seawater desalination and energy recovery module provided by the invention uses a pump-motor series connection, comprises an energy recovery and pressurization device for controlling the inlet flow in a closed loop manner, recovers the residual hydraulic energy after reverse osmosis under the condition of ensuring certain pressurization of the input seawater, and feeds the recovered energy back to the pressurization pump at the inlet, so that the overall working efficiency of the system is effectively improved.
(3) The wind energy capturing device provided by the invention is provided with the impeller (a plurality of impellers can be connected in parallel) which is arranged below the sea level and is used for capturing ocean current energy, the impeller drives the sea water hydraulic pump with adjustable displacement, the captured ocean current energy can be converted into pressure required by a part of system, and the problem that the pressure of the water pump driven by the traditional wind turbine is insufficient due to the fact that the installation position is too high and the power supplied by the wind power is insufficient is solved.
(4) The wave energy capturing device can connect a plurality of seawater hydraulic cylinders provided with the floats in parallel to form the float array, can collect multi-point wave energy at the same time, and can effectively avoid system pressure and flow fluctuation generated when a single float captures wave energy compared with a single hydraulic cylinder, thereby improving the utilization efficiency of wave energy.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a block diagram of a seawater hydraulic direct-drive type multi-functional complementary seawater desalination system according to an embodiment of the invention; wherein, the liquid crystal display device comprises a liquid crystal display device,
1. the device comprises a wind energy capturing device, a sea water supply pump driven by a wind turbine, a water turbine pump, a sea water filter and a water outlet pipeline of the wind energy capturing device, wherein the sea water supply pump is driven by the wind turbine, the sea water filter is driven by the wind turbine, and the sea water supply pump is driven by the;
2. the wave energy capturing device comprises a wave energy capturing device, a seawater hydraulic cylinder, a first one-way valve, a second one-way valve, a float, a third one-way valve, a fourth one-way valve, a seawater hydraulic cylinder inlet pipeline, a wave energy capturing device and a wave energy capturing device, wherein the wave energy capturing device comprises the wave energy capturing device, the seawater hydraulic cylinder, the first one-way valve, the second one-way valve, the float, the third one-way valve, the fourth one-way valve, the seawater hydraulic cylinder inlet pipeline, the seawater hydraulic cylinder, the wave energy capturing device and the water outlet pipeline;
3. the energy storage pressure stabilizing device comprises an energy storage pressure stabilizing device 31, an inlet water stop one-way valve 32, a first energy accumulator 33, a first outlet water stop one-way valve 34, an outlet pressure gauge 35, a safety overflow valve 36, a second outlet water stop one-way valve 37, a second energy accumulator 38, a first inlet pressure gauge 39, a second inlet pressure gauge 310 and an outlet pipeline of the energy storage pressure stabilizing device;
4. the seawater desalination and energy recovery module comprises a seawater desalination and energy recovery module 41, an energy recovery and pressurization device 42, a reverse osmosis membrane group 43, an inlet throttle valve 44, a water outlet flowmeter 45, a high-pressure strong brine outlet pipeline 46 and a reverse osmosis membrane group outlet pipeline;
5. a fresh water tank;
6. and a control module.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. 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.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1:
as shown in fig. 1, the embodiment of the invention provides a seawater hydraulic direct-drive type multifunctional complementary seawater desalination system, which comprises a wind energy capturing device (1), a wave energy capturing device (2), an energy storage and pressure stabilizing device (3), a seawater desalination and energy recovery module (4), a fresh water tank (5) and a control module (6); wherein the wind energy capturing device (1) and the wave energy capturing device (2) are respectively connected with the energy storage and voltage stabilization device (3); the energy storage and pressure stabilization device (3) comprises two energy storage and pressure stabilization branches which are summarized in an outlet pipeline (311) of the energy storage and pressure stabilization device and are connected with the sea water desalination and energy recovery module (4); the sea water desalination and energy recovery module (4) is connected with the fresh water tank (5).
As an implementation mode of the embodiment of the invention, the wind energy capturing device (1) is connected with the energy storage and pressure stabilization device (3) through a water outlet pipeline (14) of the wind energy capturing device; the wave energy capturing device (2) is connected with the energy storage pressure stabilizing device (3) through a water outlet pipeline (28) of the wave energy capturing device.
As an implementation mode of the embodiment of the invention, the wind energy capturing device (1) comprises a seawater filter (13), a turbine pump (12) and a turbine driven seawater supply pump (11) which are connected in sequence through pipelines; the wind energy capturing device (1) directly absorbs seawater from the outside environment and supplies the seawater to the system, and meanwhile, the turbine pump (12) can complement high pressure requirements caused by too high installation position of the sea water pump (11) driven by the wind turbine under ocean current driving, so that the sea water pump works normally; the number of the turbine pumps (12) can be increased as required, and the turbine pumps are connected in parallel to the system to complement the pressure; correspondingly, a one-way valve is additionally arranged for the outlet pipelines of the plurality of water turbine pumps (12) to prevent the two pipelines from communicating with each other.
As an implementation mode of the embodiment of the invention, the wave energy capturing device (2) comprises a seawater hydraulic cylinder (21), a floater (24) connected with a hydraulic cylinder rod, a first one-way valve (22) and a second one-way valve (23) connected with two ports on the water inlet side of the seawater hydraulic cylinder (21) through pipelines, and a third one-way valve (25) and a fourth one-way valve (26) connected with two ports on the water outlet side of the seawater hydraulic cylinder (21) through pipelines; the number of the seawater hydraulic cylinders (21) can be increased as required, and the seawater hydraulic cylinders are connected into the system in parallel to capture multi-point wave energy.
As an implementation manner of the embodiment of the invention, the energy storage and pressure stabilization device (3) comprises two energy storage and pressure stabilization branches which are respectively connected with the water outlet pipeline (14) of the wind energy capturing device and the water outlet pipeline (28) of the wave energy capturing device, wherein the energy storage and pressure stabilization branches comprise a first inlet pressure gauge (38) and a second inlet pressure gauge (39), an inlet water stop check valve (31), a first energy accumulator (32) and a second energy accumulator (37), a first outlet water stop check valve (33) and a second outlet water stop check valve (36), an outlet pressure gauge (34) and a safety overflow valve (35) which are sequentially connected through pipelines; the pressure gauges contained in the two branches of the energy storage pressure stabilizing device (3) monitor and record data through the system control module (6).
As an implementation mode of the embodiment of the invention, the sea water desalination and energy recovery module (4) comprises an energy recovery and pressurization device (41), a reverse osmosis membrane group (42), a throttle inlet valve (43) and a water outlet flowmeter (44); the fresh water tank (5) is connected with the outlet of the sea water desalination and energy recovery module (4). The energy recovery and pressurization device (41) is composed of two parts: the device comprises a first seawater hydraulic motor connected with an outlet pipeline (311) of the energy storage and voltage stabilization device, a seawater hydraulic pump connected with an inlet of the reverse osmosis membrane group (42) and a seawater hydraulic motor connected with a high-pressure strong brine outlet of the reverse osmosis membrane group (42), wherein the two seawater hydraulic motors are rigidly connected. When the seawater with preset pressure after energy storage and pressure stabilization flows to the inlet throttle valve (43), the system is in a starting stage, the inlet throttle valve (43) is fully opened, the seawater with the preset pressure fully enters the reverse osmosis membrane group (42), the rest high-pressure strong brine flows from the high-pressure strong brine outlet pipeline (45) to the seawater hydraulic motor to drive the seawater hydraulic pump to rotate, after the seawater hydraulic pump is started, the opening degree of the inlet throttle valve (43) is gradually reduced, and after the rotating speed of the seawater hydraulic pump is stabilized, the throttle valve is fully closed, so that the seawater with the preset pressure is fully pressurized by the seawater hydraulic pump and then enters the reverse osmosis membrane group (42); the desalted seawater flows out of the outlet pipeline (46) of the reverse osmosis membrane group and enters the fresh water tank (5) for storage; the rest high-pressure strong brine is discharged to the external environment through the seawater hydraulic motor, and the power is further supplemented for the seawater hydraulic pump, so that the energy recovery process is realized.
Further, the hydraulic pumps involved in the turbine pump (12), the wind turbine driven sea water supply pump (11) and the energy recovery and pressurization device (41) are variable displacement pumps and can be regulated and controlled by an external control console.
Further, a water level sensor is arranged in the fresh water tank (5), so that the state of the water tank can be fed back in time, and water storage overflow is avoided.
As an implementation mode of the embodiment of the invention, the control module (6) monitors the rotation speeds of the hydraulic motor and the hydraulic pump in the turbine pump (12), the sea water supply pump (11) driven by the wind turbine, the energy recovery and pressurization device (41), the dynamic characteristic curve of the floater (24), the water level of the fresh water tank (5), and the time-varying curves of the monitoring quantities corresponding to the first inlet pressure gauge (38), the second inlet pressure gauge (39), the outlet pressure gauge (34) and the water outlet flow gauge (43), so as to timely feed back the working state of the system.
Further, the control module (6) simultaneously controls the turbine pump (12), the sea water supply pump (11) driven by the wind turbine, the sea water hydraulic pump in the energy recovery and pressurization device (41) to change the displacement, and the opening degree of the inlet throttle valve (43) to correspondingly regulate and control the system under the condition that the working state of the system is obtained.
The working process of the embodiment of the invention is as follows:
when sea wind exists, the wind energy capturing device (1) directly absorbs sea water from the external environment and directly supplies the sea water to the system, wherein a sea water supply pump (11) driven by a wind turbine works, and a water turbine pump (12) for assisting in water supply supplements part of pressure for the system under the driving of ocean currents, so that sufficient water supply is ensured, and the pressurized sea water flows through a water outlet pipeline (14) of the wind energy capturing device and is supplied to the system;
when waves exist on the sea surface, the floats (24) can drive the hydraulic rods of the seawater hydraulic cylinders (21) to move up and down under the driving of the waves:
when the floater moves upwards, the space of the upper chamber of the hydraulic cylinder is extruded, and the seawater in the chamber flows out through the fourth one-way valve (26) and has a certain pressure; the space of the lower chamber of the hydraulic cylinder is expanded to form negative pressure, and seawater flows into the lower chamber of the hydraulic cylinder through a seawater filter (13), a seawater hydraulic cylinder inlet pipeline (27) and a second one-way valve (23);
when the float moves downwards, the space of the lower chamber of the hydraulic cylinder is extruded, and the seawater in the chamber flows out through the third one-way valve (25) and has a certain pressure; the space of the upper chamber of the hydraulic cylinder is expanded to form negative pressure, and seawater flows into the upper chamber of the hydraulic cylinder through the seawater filter (13), the seawater hydraulic cylinder inlet pipeline (27) and the first one-way valve (22). The first check valve (22) and the second check valve (23) ensure that the seawater in the two chambers cannot be communicated with each other; the third check valve (25) and the fourth check valve (26) have the same functions, and can also prevent the high-pressure seawater stored in the energy storage and pressure stabilization device (3) from reversely flowing into the seawater hydraulic cylinder (21) to protect a loop when the wave energy capturing device does not work. The inlet of the seawater hydraulic cylinder (21) is connected with the outside environment through a pipeline, so that seawater medium can be continuously obtained in the system, and a certain leakage amount can be compensated for the system.
Two strands of seawater with certain pressure respectively flow into the energy storage and pressure stabilization device (3) from the water outlet pipeline (28) of the wave energy capturing device and the water outlet pipeline (14) of the wind energy capturing device, respectively flow into the first energy storage device (32) and the second energy storage device (37) to absorb and store a part of pressure energy, and after the residual liquid flows respectively flow through the first outlet check valve (33) and the second outlet check valve (36), the residual liquid flows are summarized into one liquid flow, and flow out through the outlet pipeline (310) of the energy storage and pressure stabilization device, and meanwhile, the safety overflow valve (35) ensures that the pressure of the system is at a safety level. The function of the inlet water stop one-way valve (31) is to prevent the reverse flow of the pressurized seawater in the accumulator from damaging the element when the wind energy capturing device (1) is not in operation; similarly, the first outlet check valve (33) and the second outlet check valve (36) prevent the high-pressure seawater in the two loops from communicating with each other when the single energy capturing device is not in operation, damaging other elements, interfering with the monitoring of the working state of the system, and also realizing independent operation between the two energy capturing devices: when one device is not in operation, the other device can continuously provide liquid flow with certain pressure for the system, so that the complementary relationship is formed.
The collected seawater flows through a first seawater hydraulic motor of the energy recovery and pressurization device (41), and drives a seawater hydraulic pump of the energy recovery and pressurization device (41) to operate so as to pressurize the seawater in a pipeline, and then enters a reverse osmosis membrane group (42); the obtained fresh water flows to a fresh water tank (5) for storage through an outlet pipeline (45) of the reverse osmosis membrane group; the rest high-pressure strong brine flows to a second seawater hydraulic motor of the energy recovery and pressurization device (41) through a high-pressure strong brine outlet pipeline (44) to recover energy, and the power is supplemented for the seawater hydraulic pump and the first seawater hydraulic motor.
When the collected seawater flows to an inlet throttle valve (43), the system is in a starting stage, the inlet throttle valve (43) is fully opened, the seawater completely enters a reverse osmosis membrane group (42), the rest high-pressure strong brine flows from a high-pressure strong brine outlet pipeline (45) to the seawater hydraulic motor to drive the seawater hydraulic pump to rotate, after the seawater hydraulic pump is started, the inlet throttle valve (43) gradually reduces the opening degree, after the rotating speed of the seawater hydraulic pump is stable, the throttle valve is fully closed, so that the seawater with preset pressure is completely pressurized by the seawater hydraulic pump, and then enters the reverse osmosis membrane group (42); the desalted seawater flows out of the outlet pipeline (46) of the reverse osmosis membrane group and enters the fresh water tank (5) for storage; the rest high-pressure strong brine is discharged to the external environment through the seawater hydraulic motor, and the power is further supplemented for the seawater hydraulic pump, so that the energy recovery process is realized.
The control module (6) monitors the working states of the sea water supply pump (11), the water turbine pump (12) and the floater (24) driven by the wind turbine; meanwhile, the inlet/outlet pressure of the energy storage pressure stabilizing device (3) is monitored to evaluate the working state of the energy storage pressure stabilizing device; and adjusting the discharge capacity of all variable pumps according to the information of the working state of the system so as to maintain the stability of the flow of the system.
The control module (6) also monitors the running state of the energy recovery and pressurization device (41), the water level of the fresh water tank (5) and the data of the water outlet flow meter (44) so as to evaluate the energy recovery efficiency of the system, the real-time water production rate and pre-warn the water level of the fresh water tank.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but various modifications and improvements made by those skilled in the art to which the present invention pertains are made without departing from the spirit of the present invention, and all modifications and improvements fall within the scope of the present invention as defined in the appended claims.
Claims (8)
1. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system is characterized by comprising a wind energy capturing device, a wave energy capturing device, an energy storage and pressure stabilization device, a seawater desalination and energy recovery module and a fresh water tank; the wind energy capturing device and the wave energy capturing device are respectively connected with the energy storage and voltage stabilization device; the energy storage and pressure stabilization device comprises two energy storage and pressure stabilization branches which are summarized at an outlet pipeline of the energy storage and pressure stabilization device and are connected with the sea water desalination and energy recovery module; the sea water desalination and energy recovery module is connected with the fresh water tank.
2. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system of claim 1, wherein the wind energy capturing device is connected with the energy storage and pressure stabilization device through a water outlet pipeline of the wind energy capturing device; the wave energy capturing device is connected with the energy storage pressure stabilizing device through a water outlet pipeline of the wave energy capturing device.
3. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system of claim 2, wherein the wind energy capturing device comprises a seawater filter, a turbine pump and a seawater supply pump driven by the turbine, which are sequentially connected through pipelines; the wind energy capturing device directly absorbs seawater from the external environment and supplies the seawater to the seawater desalination system, and meanwhile, the turbine pump can complement high pressure requirements caused by too high installation positions of the seawater pump driven by the wind turbine under ocean current driving, so that the turbine pump works normally.
4. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system of claim 3, wherein the seawater desalination and energy recovery module comprises an energy recovery and pressurization device, a reverse osmosis membrane group, a water outlet flowmeter and an inlet throttle valve; the energy recovery and pressurization device comprises: the seawater hydraulic pump is connected with the outlet pipeline of the energy storage and voltage stabilization device and the inlet of the reverse osmosis membrane group, and the seawater hydraulic motor is connected with the high-pressure strong brine outlet of the reverse osmosis membrane group; the inlet throttle valve is connected with the seawater hydraulic pump in parallel; when the seawater with preset pressure after energy storage and pressure stabilization flows to the throttle inlet valve, the system is in a starting stage, the throttle inlet valve is fully opened, the seawater with the preset pressure fully enters the reverse osmosis membrane group, the rest high-pressure strong brine flows to the seawater hydraulic motor from the high-pressure strong brine outlet of the reverse osmosis membrane group to drive the seawater hydraulic pump to rotate, after the seawater hydraulic pump is started, the throttle inlet valve gradually reduces the opening degree, after the rotating speed of the seawater hydraulic pump is stabilized, the throttle valve is fully closed, so that the seawater with the preset pressure is fully pressurized by the seawater hydraulic pump, and then enters the reverse osmosis membrane group; the desalted seawater flows out of an outlet pipeline of the reverse osmosis membrane group and enters the fresh water tank for storage; the rest high-pressure strong brine is discharged to the external environment through the seawater hydraulic motor, and the power is further supplemented for the seawater hydraulic pump, so that the energy recovery process is realized.
5. The seawater hydraulic direct drive type multi-energy complementary seawater desalination system of claim 4, wherein the hydraulic pump, the wind turbine driven seawater feed pump, and the hydraulic pump in the energy recovery and pressurization device are variable displacement pumps.
6. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system of claim 5, wherein the fresh water tank is internally provided with a water level sensor for timely feeding back the state of the water tank.
7. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system of claim 6, further comprising a control module for monitoring the rotation speed of the hydraulic motor in the turbine pump, the wind turbine driven seawater supply pump, the energy recovery and pressurization device, the dynamic characteristic curve of the floater, the water level of the fresh water tank, and the time-varying curves of the corresponding monitoring amounts of the first inlet pressure gauge, the second inlet pressure gauge, the outlet pressure gauge and the water outlet flow gauge, so as to feed back the working state of the system.
8. The seawater hydraulic direct-drive type multifunctional complementary seawater desalination system of claim 7, wherein the control module is further used for simultaneously controlling the hydraulic pump of the turbine, the seawater supply pump driven by the wind turbine, the seawater pump in the energy recovery and pressurization device to change the displacement, and the opening of the throttle inlet valve, and performing corresponding regulation and control under the condition of obtaining the working state of the system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310673572.5A CN116854194A (en) | 2023-06-08 | 2023-06-08 | Seawater hydraulic direct-drive type multifunctional complementary seawater desalination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310673572.5A CN116854194A (en) | 2023-06-08 | 2023-06-08 | Seawater hydraulic direct-drive type multifunctional complementary seawater desalination system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116854194A true CN116854194A (en) | 2023-10-10 |
Family
ID=88220632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310673572.5A Pending CN116854194A (en) | 2023-06-08 | 2023-06-08 | Seawater hydraulic direct-drive type multifunctional complementary seawater desalination system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116854194A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926940A (en) * | 2012-10-24 | 2013-02-13 | 江苏大学 | Offshore wind and ocean current energy storage power generation system realized by utilizing hydraulic transmission |
| CN104495983A (en) * | 2014-09-19 | 2015-04-08 | 何宏舟 | Pumped storage-type wind energy directly-driven seawater desalination integrated system |
| CN104564508A (en) * | 2015-01-12 | 2015-04-29 | 郑涵文 | Tidal power generation device |
| CN109368874A (en) * | 2018-12-10 | 2019-02-22 | 国家海洋局天津海水淡化与综合利用研究所 | A kind of wave energy accumulation of energy assisted sea water desalinization system |
| CN112759009A (en) * | 2020-12-28 | 2021-05-07 | 浙江海洋大学 | Pressure oil direct-drive seawater desalination system based on wave energy conversion |
-
2023
- 2023-06-08 CN CN202310673572.5A patent/CN116854194A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102926940A (en) * | 2012-10-24 | 2013-02-13 | 江苏大学 | Offshore wind and ocean current energy storage power generation system realized by utilizing hydraulic transmission |
| CN104495983A (en) * | 2014-09-19 | 2015-04-08 | 何宏舟 | Pumped storage-type wind energy directly-driven seawater desalination integrated system |
| CN104564508A (en) * | 2015-01-12 | 2015-04-29 | 郑涵文 | Tidal power generation device |
| CN109368874A (en) * | 2018-12-10 | 2019-02-22 | 国家海洋局天津海水淡化与综合利用研究所 | A kind of wave energy accumulation of energy assisted sea water desalinization system |
| CN112759009A (en) * | 2020-12-28 | 2021-05-07 | 浙江海洋大学 | Pressure oil direct-drive seawater desalination system based on wave energy conversion |
Non-Patent Citations (1)
| Title |
|---|
| 陈云等: "《水文与水资源勘测研究和节约合理利用水资源》", vol. 1, 31 August 2022, 吉林科学技术出版社, pages: 218 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103089533B (en) | Tidal current energy unsteady state pressurization sea water desalination and generating set | |
| KR101684852B1 (en) | Method and apparatus for osmotic power generation | |
| CN102022251B (en) | Method and device for desalting sea water and generating electricity by utilizing tidal energy drive | |
| CN103547798B (en) | Concentration difference power generation device and operational approach thereof | |
| CN103214063B (en) | Ocean energy direct drive sea water desalting device | |
| Mohamed et al. | An experimental comparative study of the technical and economic performance of a small reverse osmosis desalination system equipped with an hydraulic energy recovery unit | |
| CN103615363A (en) | Power generation device and power generation method adopting salinity gradient power | |
| CN201161955Y (en) | Mobile sea water desalting apparatus | |
| CN106762378B (en) | Folding tidal current energy power generation and seawater desalination integrated cluster | |
| CN110204009A (en) | A kind of wave energy and solar seawater desalination and the device of salt manufacturing | |
| CN200995974Y (en) | Reverse-osmosis seawater desalter of air and light complementary generating-driven | |
| CN205820944U (en) | A kind of novel sea water desalinization system utilizing wave energy | |
| CN103112927A (en) | Transmitting system powered by compressed air and seawater desalination method and system | |
| CN106277188A (en) | A kind of ship borne type Wave energy sea water desalinating device | |
| CN204253267U (en) | A kind of sea water desalinating unit floating breakwater based on vertical guide pile formula | |
| EP1562693A1 (en) | Desalination device | |
| CN112759009A (en) | Pressure oil direct-drive seawater desalination system based on wave energy conversion | |
| CN116854194A (en) | Seawater hydraulic direct-drive type multifunctional complementary seawater desalination system | |
| CN203222522U (en) | Portable RO (reverse osmosis) device for sea water desalination | |
| CN102398962A (en) | Device and method for reverse osmosis desalination by using sea water potential energy | |
| CN102852703A (en) | Pressure compensation type seawater desalination and power generation device capable of conducting two-way driving by utilizing tidal energy | |
| CN102852704A (en) | Bypass stabilizing type seat water desalination and power generation device utilizing tidal energy for one-way drive | |
| CN105800734B (en) | New energy efficient plunger pump desalination plant system | |
| CN104495983B (en) | Water-storage formula wind energy directly drives desalinization integrated system | |
| CN102840092A (en) | Unidirectional-drive power regulation type sea water desalination and power generation device by utilizing tidal energy |
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 |