CN108821375B - Integrated system based on solar sea water desalination and salt differential energy power generation - Google Patents
Integrated system based on solar sea water desalination and salt differential energy power generation Download PDFInfo
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- CN108821375B CN108821375B CN201811051750.6A CN201811051750A CN108821375B CN 108821375 B CN108821375 B CN 108821375B CN 201811051750 A CN201811051750 A CN 201811051750A CN 108821375 B CN108821375 B CN 108821375B
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/04—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using pressure differences or thermal differences occurring in nature
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- 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
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- 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
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- 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
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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- 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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- General Engineering & Computer Science (AREA)
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Abstract
The application provides an integrated system based on solar energy sea water desalination and salt difference energy electricity generation, include: a sea water desalination device, a salt difference power generation device and a solar energy collection device; the sea water desalting device sequentially comprises the following components from bottom to top: a sea water layer, an evaporation layer and a condensation layer; the condensation layer is an inverted cone-shaped condensation surface, and a fresh water collecting tank is arranged right below the top point of the condensation layer; the evaporation layer is provided with a heat absorbing material which is connected with the solar energy collecting device in a heat conduction way and is used for heating seawater; the seawater layer is provided with a first water inlet and a first water outlet; the first water inlet is used for leading in seawater, and the first water outlet is communicated with the salt difference power generation device. According to the seawater desalination device, the concentrated seawater generated after the seawater is desalinated is discharged into the salt difference power generation device, the salt difference energy is converted into electric energy, the concentrated seawater is diluted at the same time, the damage degree of the water environment in which the concentrated seawater is discharged is reduced, and meanwhile, the technical problem that the construction area of a seawater desalination facility is limited due to the problem of the concentrated seawater discharge is solved.
Description
Technical Field
The application relates to the field of new energy equipment, in particular to an integrated system based on solar sea water desalination and salt differential energy power generation.
Background
The water resource problem is a global environmental problem, and more than 97% of water resources in the global scope are salty water such as seawater. Because of low energy consumption for sea water desalination, raw water resources are abundant, and sea water desalination is regarded as the most feasible and economical fresh water obtaining mode in countries around the world. The green sustainable sea water desalination mode developed by people at present mainly utilizes the heat of solar energy to distill, and then the distilled fresh water is collected.
The process of sea water desalination can produce a large amount of high-concentration concentrated sea water, the direct discharge of the concentrated sea water can cause ecological environment damage, the subsequent treatment mode of the concentrated sea water is generally used for salt making or chemical production, therefore, the existing sea water desalination engineering generally needs to be constructed adjacent to a salt field or a chemical plant so as to reduce the transportation cost, but simultaneously, the technical problem that the existing sea water desalination facility construction area is limited by the problem of the discharge of the concentrated sea water is also caused.
Disclosure of Invention
The application provides an integrated system based on solar energy sea water desalination and salt differential energy power generation, which is used for solving the technical problem that the construction area of the existing sea water desalination facility is limited by the problem of concentrated sea water emission.
The application provides an integrated system based on solar energy sea water desalination and salt difference energy electricity generation, include: a sea water desalination device, a salt difference power generation device and a solar energy collection device;
the sea water desalting device sequentially comprises the following components from bottom to top: a sea water layer, an evaporation layer and a condensation layer;
the condensation layer is an inverted cone-shaped condensation surface, and a fresh water collecting tank is arranged right below the vertex of the condensation layer;
the evaporation layer is provided with a heat absorbing material, and the heat absorbing material is connected with the solar energy collecting device in a heat conduction way and is used for heating seawater;
the seawater layer is provided with a first water inlet and a first water outlet;
the first water inlet is used for introducing seawater, and the first water outlet is communicated with the salt difference power generation device.
Preferably, the sea water desalination device further comprises: a cooling layer;
the cooling layer is arranged above the condensation layer and forms a closed cavity with the condensation layer;
the cooling layer is provided with a second water inlet and a second water outlet, the second water inlet is used for leading in seawater, and the second water outlet is communicated with the first water inlet.
Preferably, the solar energy collection device specifically comprises; the device comprises a device frame, a focusing lens, a fixed focus light-gathering tracking mechanism and a solar energy conduction mechanism;
the device frame is used for fixing the fixed-focus concentrating tracking mechanism and the solar energy conduction mechanism;
the first end of the solar energy conduction mechanism is fixed at the focusing focal point position of the focusing lens through a conical base;
the second end of the solar energy conduction mechanism is fixedly connected with the heat absorbing material;
the solar energy conducting mechanisms are arranged in one-to-one correspondence with the focusing lenses;
the fixed focus spotlight tracking mechanism specifically comprises: and the variable-frequency speed regulating motor and the transmission part are used for regulating the angle of the focusing lens.
Preferably, the solar energy conduction mechanism is specifically a light pipe;
the first end of the light pipe is provided with a rotating parabolic body tip, the rotating parabolic body tip is provided with an inner groove, and an opening of the inner groove faces the focusing lens;
the inner wall of the light pipe and the inner wall of the inner groove are provided with total reflection coatings;
the second end of the light pipe is sealed through high-light-transmittance glass and is connected with a limiting hole in the heat absorbing material in a matched mode.
Preferably, the fixed focus light focusing tracking mechanism specifically further comprises: a return spring;
the transmission part specifically comprises: the driving gear, the driven gear, the transmission polar shaft and the rack;
the driving gear and the driven gear are respectively connected with the rack in a meshed manner;
the driving gear is used for being linked with the variable-frequency speed regulating motor;
the driven gear is linked with the focusing lens through the transmission polar shaft;
one end of the return spring is fixedly connected with one end of the rack, and the other end of the return spring is fixedly connected with the device frame;
the driving gear is an incomplete gear.
Preferably, the salt-tolerant power generation device specifically includes: a third water inlet, an ion dialysis layer and a third water outlet;
the third water inlet, the ion dialysis layer and the third water outlet are sequentially connected;
the third water inlet is of a double-pipeline structure and comprises a concentrated solution channel water inlet and a dilute solution channel water inlet;
the water inlet of the concentrated solution channel is communicated with the first water outlet, and the water inlet of the dilute solution channel is used for introducing fresh water or seawater with normal concentration;
the ion dialysis layer is used for converting salt difference energy into electric energy.
Preferably, the focusing lens is specifically a fresnel focusing lens.
Preferably, the heat absorbing material is specifically a black fiber blanket with a metal skeleton.
From the above technical scheme, the application has the following advantages:
the application provides an integrated system based on solar energy sea water desalination and salt difference energy electricity generation, include: a sea water desalination device, a salt difference power generation device and a solar energy collection device; the sea water desalting device sequentially comprises the following components from bottom to top: a sea water layer, an evaporation layer and a condensation layer; the condensation layer is an inverted cone-shaped condensation surface, and a fresh water collecting tank is arranged right below the vertex of the condensation layer; the evaporation layer is provided with a heat absorbing material, and the heat absorbing material is connected with the solar energy collecting device in a heat conduction way and is used for heating seawater; the seawater layer is provided with a first water inlet and a first water outlet; the first water inlet is used for introducing seawater, and the first water outlet is communicated with the salt difference power generation device.
According to the method, the salt difference energy is converted into electric energy and the concentrated seawater is diluted simultaneously in the reverse electrodialysis mode through discharging the concentrated seawater generated after the seawater desalination into the salt difference power generation device, so that the diluted concentrated seawater can be directly discharged into the sea, the damage degree of the concentrated seawater to the water environment is reduced, and meanwhile, the technical problem that the construction area of a seawater desalination facility is limited due to the problem of the concentrated seawater discharge is solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic diagram of the overall structure of an integrated system based on solar sea water desalination and salt-differential energy power generation provided by the application;
fig. 2 is a schematic diagram of a connection structure and a water flow direction of a seawater desalination device and a salt-differential power generation device in an integrated system based on solar seawater desalination and salt-differential power generation provided by the application;
fig. 3 is a schematic structural diagram of a solar energy collection device in an integrated system based on solar energy sea water desalination and salt-differential energy power generation provided by the present application;
fig. 4 is a schematic structural diagram of a solar energy conduction mechanism in an integrated system based on solar energy sea water desalination and salt-differential energy power generation provided by the present application;
fig. 5 is a schematic structural diagram of a transmission part and a return spring in an integrated system based on solar sea water desalination and salt differential energy power generation.
Detailed Description
The embodiment of the application provides an integrated system based on solar energy sea water desalination and salt differential energy power generation, which is used for solving the technical problem that the construction area of the existing sea water desalination facility is limited by the problem of concentrated sea water discharge.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the embodiments described below are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Referring to fig. 1 to 5, an embodiment of the present application provides an integrated system for generating electricity based on solar seawater desalination and salt-differential energy, including: a sea water desalination device 2, a salt difference power generation device 13 and a solar energy collection device;
the sea water desalination device 2 comprises, in order from bottom to top: a sea layer 20, an evaporation layer 40 and a condensation layer 39;
the condensation layer 39 is an inverted cone-shaped condensation surface 15, and a fresh water collecting tank is arranged right below the vertex of the condensation layer 39;
the evaporation layer 40 is provided with a heat absorbing material which is connected with the solar energy collecting device in a heat conduction way and is used for heating seawater, wherein the heat absorbing material is fixed through a plurality of struts arranged on the seawater layer;
the seawater layer 20 is provided with a first water inlet 19 and a first water outlet 21;
the first water inlet 19 is used for leading in seawater, and the first water outlet 21 is communicated with the salt difference power generation device 13.
It should be noted that, the usage mode of this embodiment specifically includes: firstly, normal seawater is led into the seawater layer 20 of the seawater desalination device 2 through the first water inlet 19, the seawater is heated through solar heat absorbed by a heat absorbing material arranged on the seawater layer 20, the evaporation of the seawater is promoted, the evaporated water vapor rises to a condensation layer 39 positioned on the upper layers of the seawater layer 20 and the evaporation layer 40 to be condensed into small water drops, finally, the small water drops are collected to a fresh water collecting tank 17, and then the small water drops are discharged to a fresh water collecting container, so that the seawater desalination step is completed;
the seawater stored in the seawater layer 20 is changed into concentrated seawater by the continuous evaporation of water, the concentrated seawater is pumped into the salt difference power generation device 13 through the first water outlet 21, the salt difference power generation device 13 is used for converting the salt difference energy into electric energy, and the concentrated seawater is diluted at the same time, so that the diluted concentrated seawater can be directly discharged into the sea, and the technical problem that the existing seawater desalination facility needs to be adjacently constructed with a salt field or a chemical plant is solved;
the specific water flow direction is shown in fig. 2, wherein P in fig. 2 is a water pump.
Further, the sea water desalination device 2 further includes: a cooling layer 16;
the cooling layer 16 is arranged above the condensation layer 39 and forms a closed cavity with the condensation layer 39;
the cooling layer 16 is provided with a second water inlet 1 for introducing seawater and a second water outlet 3, the second water inlet 1 being in communication with the first water inlet 19.
It should be noted that, the cooling layer 16 and the condensation layer 39 in this embodiment form a closed cavity structure, that is, the condensation layer 39 is the bottom surface of the cooling layer 16, and the second water inlet 1 provided in the cooling layer 16 is used to guide seawater to flow over the condensation layer 39, so that the heat of the condensation layer 39 is reduced to improve the condensation efficiency, then the seawater layer 20 is guided into the cooling layer 16 from the second water outlet 3 to perform the seawater desalination step, and meanwhile, the seawater flowing through the cooling layer 16 absorbs the heat of the condensation layer 39 and also preheats the seawater by the absorbed heat, so that the efficiency of evaporating the seawater is further improved.
Further, the solar energy collection device specifically includes; a device frame 6, a focusing lens 5, a fixed focus light-gathering tracking mechanism and a solar energy conduction mechanism 4;
the device frame 6 is used for fixing the fixed-focus concentrating tracking mechanism and the solar energy conduction mechanism 4;
the first end of the solar energy conduction mechanism 4 is fixed at the focusing focal position of the focusing lens through a conical base 7;
the second end of the solar energy conduction mechanism 4 is fixedly connected with the heat absorbing material;
the solar energy conduction mechanisms 4 are arranged in one-to-one correspondence with the focusing lenses 5;
the fixed focus spotlight tracking mechanism specifically comprises: the variable frequency speed regulating motor 9 and the transmission part are used for regulating the angle of the focusing lens 5.
The device frame 6 is used for supporting the condensing lens, the variable frequency speed motor 9 and other transmission parts. When the sun rises, the variable-frequency speed-regulating motor 9 is started, and the focusing lens 5 is driven to rotate at an angular speed of 15 degrees per hour through the transmission part, so that the aim of tracking the sun is fulfilled
More specifically, the solar tracking apparatus of this embodiment employs a polar axis tracking mechanism in which the condensing lens is supported by a bracket, specifically, a U-shaped bracket 48, and the U-shaped bracket 48 is fixed on the transmission polar axis 8 to rotate together with the transmission polar axis 8. The U-shaped frame 48 is provided with nuts for periodically adjusting the orientation of the condensing lens. The transmission polar axis 8 rotates through the power provided by the cooperation of the transmission parts, and then drives the U-shaped frame 48 to swing. The focus of the focusing lens 5 is arranged on the intersection point of the extension line of the transmission polar axis 8 and the declination rotation axis, and when the fixed focus light-gathering tracking mechanism tracks the sun, the position of the focus is ensured not to change.
Further, the solar energy conduction mechanism 4 is specifically a light pipe;
the first end of the light pipe is provided with a rotating parabolic tip 44, the rotating parabolic tip 44 is provided with an inner groove, and the opening of the inner groove faces the focusing lens 5;
the inner wall of the light pipe and the inner wall of the inner groove are provided with total reflection coatings;
the second end of the light pipe is sealed by high light transmission glass and is matched and connected with a limit hole 41 arranged in the heat absorbing material;
the light-collecting focal point of the inner groove of the rotating parabolic tip 44 coincides with the light-collecting focal point position of the focusing lens 5.
The focal point of the focusing lens 5 of the present embodiment coincides with the focal point of the inner groove of the rotating parabolic tip 44. As is known from the parabolic nature, divergent light emitted from the focal point is reflected by the parabola and then exits as parallel light. By utilizing the property, the focus is focused on the focus of the paraboloid of revolution, the light rays at the focus of the focusing lens 5 are parallel to be emitted after being regulated by the paraboloid of revolution in the inner groove, the light rays are guided into the light guide tube, and the light rays are emitted from the other side of the light guide tube after being reflected for multiple times. Is absorbed by the heat absorbing material at the other end of the light pipe, thereby achieving the purpose of heating.
Further, the fixed focus light focusing tracking mechanism specifically further comprises: a return spring 47;
the transmission part specifically comprises: a driving gear 45, a driven gear 46, a transmission polar shaft 8 and a rack gear 43;
the driving gear 45 and the driven gear 46 are respectively meshed with the rack 43;
the driving gear 45 is used for being linked with the variable-frequency speed-regulating motor 9;
the driven gear 46 is linked with the focusing lens 5 through the transmission polar axis 8;
one end of the return spring 47 is fixedly connected with one end of the rack 43, and the other end of the return spring 47 is fixedly connected with the device frame 6;
the driving gear 45 is an incomplete gear.
It should be noted that, in this embodiment, the focusing lens 5 is fixed by using the U-shaped frame 48 and the nut, the U-shaped frame 48 is fixedly connected with one end of the transmission polar shaft 8, the other end of the transmission polar shaft 8 is connected with the driven gear 46 disposed in the device frame 6, the driving gear 45 connected with the variable-frequency speed regulating motor 9 is in a half-tooth structure (i.e. the tooth shape only covers 180 °), and the driving gear 45 drives the driven gear 46 to rotate through the rack 43. In addition, a spring is installed at one end of the rack 43, when the driving gear 45 rotates to the state of no tooth engagement, the spring pulls the rack 43 to reset, the rack 43 drives the gear and the transmission polar shaft 8 to rotate, and the mirror frame is further driven to return to the original position. During daytime, the spring holds force, after sun tracking is completed, the driving gear 45 rotates to a toothless meshing position, the spring is released, the rack 43 is subjected to spring tension, and accordingly the original position is returned, and the driven gear 46 and the transmission polar shaft 8 are driven to reset together by the return of the rack 43.
The return spring 47 enables the tracking system to automatically return to collect the solar energy of the next day, in the system, if a return mode of 360 degrees of rotation is adopted, the rotation track of the device frame 6 and the fixed seat of the light guide tube 4 can interfere, and 360 degrees of rotation means that the motor drives the gear to do work all the day, so that the energy consumption is high, and the motor idles in the toothless meshing state, so that the energy consumption is greatly reduced. In view of both these aspects, the present invention employs a spring return approach.
Further, the salt-difference power generation device 13 specifically includes: a third water inlet, an ion dialysis layer and a third water outlet;
the third water inlet, the ion dialysis layer and the third water outlet are sequentially connected;
the third water inlet is of a double-pipeline structure and comprises a concentrated solution channel water inlet 14 and a dilute solution channel water inlet 10;
the concentrated solution channel water inlet 14 is communicated with the first water outlet 21, and the dilute solution channel water inlet 10 is used for introducing fresh water or seawater with normal concentration;
and the ion dialysis layer is used for converting the salt difference energy into electric energy.
The housing of the salt-differential power generation device 13 is rectangular parallelepiped. The upper two layers are separated by a partition 32 and a partition 33, and the lower two layers are separated by a partition 23 and a partition 24. The middle part is an ion dialysis layer consisting of an anion-cation semipermeable membrane and an anion-cation electrode, concentrated seawater is led into the concentrated solution layer through a concentrated solution channel water inlet 14, common seawater or river water at the sea inlet of a river is pumped into the dilute solution layer through a dilute solution channel water inlet 10 and water pump, and the concentrated solution and the dilute solution respectively flow into gaps between a plurality of cation semipermeable membranes and anion semipermeable membranes, and power generation is performed in a reverse electrodialysis mode. And then discharged from the third water outlet 11. The cathode 29 and the anode 31 in the salt difference power generation device 13 generate potential difference, the cathode 29 and the anode 31 are connected into an electric appliance or a storage battery through leads 30-a and 30-b, and the electric current can be shaped and adjusted to be connected into the commercial power.
Further, the focusing lens 5 is specifically a fresnel focusing lens.
Further, the heat absorbing material is specifically a black fiber blanket with a metal framework.
It should be noted that, in this embodiment, a black fiber blanket with a metal skeleton is used as a solar heat absorbing material, where, according to the characteristics of good heat retaining effect and open pores of the fiber blanket, the capillary action on the wetting liquid is increased, and the metal skeleton has the function of promoting heat conduction, so as to accelerate evaporation of seawater and have good air permeability.
According to the embodiment of the application, the concentrated seawater generated after the seawater desalination is discharged into the salt difference power generation device 13, the salt difference energy is converted into electric energy through the reverse electrodialysis mode, and the concentrated seawater is diluted at the same time, so that the diluted concentrated seawater can be directly discharged into the sea, the damage degree of the concentrated seawater discharge water environment is reduced, the organic combination of the seawater desalination and the salt difference power generation is realized, the secondary utilization of the concentrated seawater is realized, and the technical problem that the construction area of a seawater desalination facility is limited due to the problem of the discharge of the concentrated seawater is solved.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (5)
1. An integrated system based on solar sea water desalination and salt differential energy power generation, which is characterized by comprising: a sea water desalination device, a salt difference power generation device and a solar energy collection device;
the sea water desalting device sequentially comprises the following components from bottom to top: a sea water layer, an evaporation layer and a condensation layer;
the condensation layer is an inverted cone-shaped condensation surface, and a fresh water collecting tank is arranged right below the vertex of the condensation layer;
the evaporation layer is provided with a heat absorbing material, and the heat absorbing material is connected with the solar energy collecting device in a heat conduction way and is used for heating seawater;
the seawater layer is provided with a first water inlet and a first water outlet;
the first water inlet is used for introducing seawater, and the first water outlet is communicated with the salt difference power generation device;
the solar energy collecting device specifically comprises; the device comprises a device frame, a focusing lens, a fixed focus light-gathering tracking mechanism and a solar energy conduction mechanism;
the device frame is used for fixing the fixed-focus concentrating tracking mechanism and the solar energy conduction mechanism;
the first end of the solar energy conduction mechanism is fixed at the focusing focal point position of the focusing lens through a conical base;
the second end of the solar energy conduction mechanism is fixedly connected with the heat absorbing material;
the solar energy conducting mechanisms are arranged in one-to-one correspondence with the focusing lenses;
the fixed focus spotlight tracking mechanism specifically comprises: the variable-frequency speed regulating motor and the transmission part are fixedly connected with the condensing lens through a bracket;
the solar energy conduction mechanism is specifically a light pipe;
the first end of the light pipe is provided with a rotating parabolic body tip, the rotating parabolic body tip is provided with an inner groove, and an opening of the inner groove faces the focusing lens;
the inner wall of the light pipe and the inner wall of the inner groove are provided with total reflection coatings;
the second end of the light pipe is sealed through high-light-transmittance glass and is connected with a limit hole in the heat absorbing material in a matched mode;
the focal point of the inner groove of the rotating parabolic body tip coincides with the focal point of the focusing lens;
the fixed focus spotlight tracking mechanism specifically further comprises: a return spring;
the transmission part specifically comprises: the driving gear, the driven gear, the transmission polar shaft and the rack;
the driving gear and the driven gear are respectively connected with the rack in a meshed manner;
the driving gear is used for being linked with the variable-frequency speed regulating motor;
the driven gear is linked with the focusing lens through the transmission polar shaft;
one end of the return spring is fixedly connected with one end of the rack, and the other end of the return spring is fixedly connected with the device frame;
the driving gear is an incomplete gear.
2. The integrated solar-powered seawater desalination and salt-differential energy power generation system of claim 1, wherein the seawater desalination plant further comprises: a cooling layer;
the cooling layer is arranged above the condensation layer and forms a closed cavity with the condensation layer;
the cooling layer is provided with a second water inlet and a second water outlet, the second water inlet is used for leading in seawater, and the second water outlet is communicated with the first water inlet.
3. The integrated system based on solar energy sea water desalination and salt-differential energy power generation according to claim 1, wherein the salt-differential power generation device specifically comprises: a third water inlet, an ion dialysis layer and a third water outlet;
the third water inlet, the ion dialysis layer and the third water outlet are sequentially connected;
the third water inlet is of a double-pipeline structure and comprises a concentrated solution channel water inlet and a dilute solution channel water inlet;
the water inlet of the concentrated solution channel is communicated with the first water outlet, and the water inlet of the dilute solution channel is used for introducing fresh water or seawater with normal concentration;
the ion dialysis layer is used for converting salt difference energy into electric energy.
4. The integrated solar desalination and salt differential energy power generation system of claim 1, wherein the focusing lens is specifically a fresnel focusing lens.
5. The integrated solar desalination and salt differential energy power generation system of claim 1 wherein the heat absorbing material is specifically a black fiber blanket with a metal framework.
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| CN201811051750.6A CN108821375B (en) | 2018-09-10 | 2018-09-10 | Integrated system based on solar sea water desalination and salt differential energy power generation |
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| CN201811051750.6A CN108821375B (en) | 2018-09-10 | 2018-09-10 | Integrated system based on solar sea water desalination and salt differential energy power generation |
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| CN108821375B true CN108821375B (en) | 2023-05-05 |
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| CN109264807B (en) * | 2018-11-19 | 2021-07-02 | 东北林业大学 | Wood gel-based integral solar seawater desalination device |
| CN110589920A (en) * | 2019-08-08 | 2019-12-20 | 广东工业大学 | Solar heat collection device and seawater desalination system with same |
| CN110980850B (en) * | 2019-12-19 | 2022-05-03 | 西安交通大学 | Solar water taking and power generating device and water taking and power generating method |
| CN112636635A (en) * | 2020-11-30 | 2021-04-09 | 杭州雅唐科技有限公司 | Energy-saving environment-friendly power generation equipment capable of desalting seawater by utilizing seawater salt difference |
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| CN112978833B (en) * | 2021-01-25 | 2022-07-15 | 西安交通大学 | Solar-driven capillary force and temperature difference synergistic salt difference power generation system and method |
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