CN104712510A - Energy recovery and pressurization method and device of hydraulic motor and hydraulic pump combination - Google Patents
Energy recovery and pressurization method and device of hydraulic motor and hydraulic pump combination Download PDFInfo
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- CN104712510A CN104712510A CN201310682474.4A CN201310682474A CN104712510A CN 104712510 A CN104712510 A CN 104712510A CN 201310682474 A CN201310682474 A CN 201310682474A CN 104712510 A CN104712510 A CN 104712510A
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- oil hydraulic
- hydraulic pump
- motor
- hydraulic motor
- pressure
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Classifications
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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
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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
- F03C—POSITIVE-DISPLACEMENT ENGINES DRIVEN BY LIQUIDS
- F03C1/00—Reciprocating-piston liquid engines
- F03C1/26—Reciprocating-piston liquid engines adapted for special use or combined with apparatus driven thereby
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
Abstract
The invention discloses a method and a device for pressurizing raw seawater by using recovered strong brine energy of a hydraulic motor and hydraulic pump combination in a reverse osmosis membrane method seawater desalination system. A power output shaft of a hydraulic motor and a shaft of a motor are synchronously coupled with a power input shaft of a hydraulic pump; a liquid inlet of the hydraulic motor is a high-pressure strong brine access port of a reverse osmosis module; a drain port of the hydraulic motor is a low-pressure strong brine exhaust port; a liquid inlet of the hydraulic pump is a low-pressure raw seawater access port; and a drain port of the hydraulic pump is a high-pressure raw seawater drain port. The hydraulic motor, the motor and the hydraulic pump are integrated to become an energy recovery and pressurization integrated device; and the device has the advantages of high energy recovery efficiency, simple system structure and low cost, and is hopeful to become a seawater desalination system with more excellent economic and technical indexes.
Description
Technical field
The present invention relates in a kind of reverse osmosis membrane seawater desalination system, the method and apparatus of seawater pressurization and recovery brine energy, especially a kind of energy regenerating pressure method and device utilizing oil hydraulic motor and hydraulic pump combination.
Background technique
The working principle of reverse osmosis membrane seawater desalination system is: former seawater becomes the former seawater of high pressure through pressurization, the former seawater of high pressure enters reverse osmosis membrane group, wherein the former seawater of the high pressure of about 40% becomes low pressure fresh water finished product through reverse osmosis membrane, and all the other former seawater of 60% then become high-pressure thick salt solution and discharge from reverse osmosis membrane group.This part high-pressure thick salt solution has pressure energy, can reclaim its energy in different ways, is used further to the pressurization of former seawater, to improve capacity usage ratio.From above-mentioned, energy regenerating is the key link of reverse osmosis membrane desalination of sea water, affects the cost of fresh water, is related to application and the popularization of desalination of sea water.The method of current recovery high-pressure thick brine energy mainly contains two classes, and a class is that high-pressure thick salt solution is introduced centrifugal turbomachine, and turbine engine rotates and participates in the pressurization of former seawater, and another kind of is that high-pressure thick salt solution is direct to the former seawater pressurization of part in special water vat.First kind method will carry out the conversion of pressure energy and kinetic energy through centrifugal turbomachine, efficiency is lower; Equations of The Second Kind method is that pressure energy directly exchanges, and efficiency is higher, but Practical Project is implemented to solve much highly difficult technical problem.Therefore need to invent a kind of efficiency high, the simple new method of technology and device, promote the development of desalination of sea water industry, to help solving the day by day deficient real circumstances of freshwater resources.
Summary of the invention
The object of the invention is the method and apparatus inventing a kind of new energy regenerating and the pressurization of former seawater, for reverse osmosis membrane desalination of sea water, reach energy recovery efficiency high, system simplification, device is simple, is easy to the object promoting, significantly reduce fresh water cost.Its basic ideas utilize positive displacement hydraulic motor, the pressure energy of brine extracted the pressurization participating in former seawater.
For achieving this end, the technical solution used in the present invention is as follows: the energy regenerating pressure method of oil hydraulic motor and hydraulic pump combination, main use oil hydraulic motor, motor, oil hydraulic pump, it is characterized in that the liquid entering hole of oil hydraulic motor connects reverse osmosis module high-pressure thick brine outlet, the liquid port of oil hydraulic motor connects low-press thick brine discharge tube road, and the pto＝power take-off of oil hydraulic motor is coupled with the power input shaft of oil hydraulic pump; Motor reel is coupled with the power input shaft of oil hydraulic pump simultaneously; The liquid entering hole of oil hydraulic pump connects the former seawater of low pressure and enters pipeline, and the liquid port of oil hydraulic pump connects the former seawer inlet of reverse osmosis module high pressure.
The energy regenerating pressure method of this oil hydraulic motor and hydraulic pump combination, is further characterized in that the power of motor is about 45% of whole former seawater pressurization power demand.
The energy regenerating pressure method of this oil hydraulic motor and hydraulic pump combination, be further characterized in that the power input shaft three of the pto＝power take-off of oil hydraulic motor, motor reel, oil hydraulic pump can arrange on the same axis, described three axles also can not be arranged on the same axis, but by mechanical transmission, the pto＝power take-off of oil hydraulic motor, motor reel are coupled simultaneously with the power input shaft of oil hydraulic pump.
The energy regenerating pressurization device of oil hydraulic motor and hydraulic pump combination, primarily of oil hydraulic motor, motor, oil hydraulic pump composition, is characterized in that the pto＝power take-off of oil hydraulic motor and motor reel are coupled with the power input shaft of oil hydraulic pump simultaneously.
The energy regenerating pressurization device of this oil hydraulic motor and hydraulic pump combination, be further characterized in that the liquid entering hole of oil hydraulic motor is the access port of reverse osmosis module high-pressure thick salt solution, the liquid port of oil hydraulic motor is the exhaust port of low-press thick salt solution, the liquid entering hole of oil hydraulic pump is the access port of the former seawater of low pressure, and the liquid port of oil hydraulic pump is the exhaust port of the former seawater of high pressure.
The energy regenerating pressurization device of this oil hydraulic motor and hydraulic pump combination, be further characterized in that the power input shaft three of the pto＝power take-off of oil hydraulic motor, motor reel, oil hydraulic pump can arrange on the same axis, described three axles also can not be arranged on the same axis, but by mechanical transmission, the pto＝power take-off of oil hydraulic motor, motor reel are coupled simultaneously with the power input shaft of oil hydraulic pump.
The energy regenerating pressurization device of this oil hydraulic motor and hydraulic pump combination, is further characterized in that the power of motor is about 45% of whole former seawater pressurization power demand.
When the energy regenerating pressure method of this oil hydraulic motor and hydraulic pump combination and device work, the high-pressure thick salt solution that reverse osmosis module is discharged enters oil hydraulic motor, promotion oil hydraulic motor rotates, low-press thick salt solution after acting enters low-press thick brine discharge tube road, has reclaimed the pressure energy of high-pressure thick salt solution in the process; Motor start-up simultaneously, oil hydraulic motor pto＝power take-off and motor shaft are all coupled with the power input shaft of oil hydraulic pump, and the common oil hydraulic pump that drives rotates.Oil hydraulic pump enters pipeline from the former seawater of low pressure and sucks the former seawater of low pressure, and the former seawater of low pressure becomes the former seawater of high pressure in oil hydraulic pump after supercharging, and the former seawater of high pressure sends into the former seawer inlet of reverse osmosis module high pressure by oil hydraulic pump liquid port.The former seawater of high pressure about about 40% becomes fresh water and is discharged by reverse osmosis module water outlet after reverse osmosis membrane, all the other about 60% become brine, this part brine keeps the pressure substantially identical with the former seawater of high pressure, enters oil hydraulic motor liquid entering hole carry out energy regenerating by reverse osmosis module high-pressure thick brine outlet.
Beneficial effect of the present invention is: from the working procedure of above-mentioned reverse osmosis membrane seawater desalination system, pressurizeing to former seawater is that system main energy sources consumes part, and the former seawater of high pressure only has about 40% to become fresh water, all the other about 60% become brine with pressure energy, if this part pressure energy can be reclaimed, then as the energy that the motor of prime mover provides, only need about 40% of the whole former seawater institutes energy requirement that pressurizes, all the other energy of about 60% can recycle, the significance that visible energy reclaims.And the present invention adopts this positive displacement energy conversion component of oil hydraulic motor, its efficiency, far above centrifugal turbomachine, can reach, and even exceed and adopt special water vat directly to the mode of the former seawater pressurization of part, its energy-saving effect is desirable.Simultaneously, oil hydraulic motor, motor, oil hydraulic pump integrate by the present invention, become energy regenerating and pressurization integrated device, than adopting special water vat directly to the mode of the former seawater pressurization of part, structure is simple, cost is low, and being expected to becomes the more superior seawater desalination system of a kind of economic and technical norms.
Accompanying drawing explanation
Fig. 1 is the principle sketch of the energy regenerating pressure method of oil hydraulic motor and hydraulic pump combination;
Fig. 2 is the schematic diagram of the first embodiment of energy regenerating pressurization device of oil hydraulic motor and hydraulic pump combination;
Fig. 3 is the schematic diagram of energy regenerating pressurization device the second embodiment of oil hydraulic motor and hydraulic pump combination;
Fig. 4 is the schematic diagram of the third embodiment of energy regenerating pressurization device of oil hydraulic motor and hydraulic pump combination;
In the accompanying drawings, 1 is oil hydraulic motor, 2 is oil hydraulic motor pto＝power take-offs, 3 is oil hydraulic motor liquid entering holes, 4 is oil hydraulic motor liquid ports, 5 is oil hydraulic pumps, 6 is oil hydraulic pump power input shafts, 7 is oil hydraulic pump liquid entering holes, 8 is oil hydraulic pump liquid ports, 9 is motor, 10 is motor reels, 11 is reverse osmosis modules, 12 is the former seawer inlets of reverse osmosis module high pressure, 13 is reverse osmosis module water outlets, 14 is reverse osmosis module high-pressure thick brine outlets, 15 is that the former seawater of low pressure enters pipeline, 16 is low-press thick brine discharge tube roads, 17 is transmission cases, 18 is driving belt or Transmitted chains.
Embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated:
As shown in accompanying drawing 1 ~ accompanying drawing 4, the energy regenerating pressure method of this oil hydraulic motor and hydraulic pump combination, main use oil hydraulic motor 1, motor 9, oil hydraulic pump 5.The liquid entering hole 3 of oil hydraulic motor 1 connects reverse osmosis module high-pressure thick brine outlet 14, and the liquid port 4 of oil hydraulic motor 1 connects low-press thick brine discharge tube road 16, and the pto＝power take-off 2 of oil hydraulic motor 1 is coupled with the power input shaft 6 of oil hydraulic pump 5; The axle 10 of motor 9 is coupled with the power input shaft 6 of oil hydraulic pump 5 simultaneously; The liquid entering hole 7 of oil hydraulic pump 1 connects the former seawater of low pressure and enters pipeline 15, and the liquid port 8 of oil hydraulic pump 5 connects the former seawer inlet 12 of reverse osmosis module high pressure.The power of motor 9 is about 45% of whole former seawater pressurization power demand.Power input shaft 6 three of the pto＝power take-off 2 of oil hydraulic motor 1, motor reel 10, oil hydraulic pump 5 can arrange on the same axis,
Described three axles also can not be arranged on the same axis, but by mechanical transmission, the pto＝power take-off 2 of oil hydraulic motor 1, motor reel 10 are coupled simultaneously with the power input shaft 6 of oil hydraulic pump 5.
The energy regenerating pressurization device of oil hydraulic motor and hydraulic pump combination, forms primarily of oil hydraulic motor 1, motor 9, oil hydraulic pump 5.The pto＝power take-off 2 of oil hydraulic motor 1 and motor reel 10 are coupled with the power input shaft 6 of oil hydraulic pump 5 simultaneously.The liquid entering hole 3 of oil hydraulic motor 1 is the access port of reverse osmosis module high-pressure thick salt solution, the liquid port 4 of oil hydraulic motor 1 is the exhaust port of low-press thick salt solution, the liquid entering hole 7 of oil hydraulic pump 5 is access ports of the former seawater of low pressure, and the liquid port 8 of oil hydraulic pump 5 is exhaust ports of the former seawater of high pressure.Power input shaft 6 three of the pto＝power take-off 2 of oil hydraulic motor 1, motor reel 10, oil hydraulic pump 5 can arrange on the same axis, as shown in the first embodiment of this device of accompanying drawing 2; Described three axles also can not be arranged on the same axis, but by mechanical transmission, the pto＝power take-off 2 of oil hydraulic motor 1, motor reel 10 are coupled simultaneously with the power input shaft 6 of oil hydraulic pump 5, as this device the second of accompanying drawing 3 embodiment, utilize transmission case 17 to be coupled by three axles, the third embodiment of this device of accompanying drawing 4 utilizes driving belt or Transmitted chains 18 to be coupled by three axles.The power of motor 9 is about 45% of whole former seawater pressurization power demand.
Although embodiment of the present invention are open as above, but its structure is not restricted to scheme described in specification and mode of execution, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the present invention is not limited to specific details and illustrates here and the legend described.
Claims (7)
1. the energy regenerating pressure method of an oil hydraulic motor and hydraulic pump combination, primarily of oil hydraulic motor, motor, oil hydraulic pump composition, it is characterized in that the liquid entering hole of oil hydraulic motor connects reverse osmosis module high-pressure thick brine outlet, the liquid port of oil hydraulic motor connects low-press thick brine discharge tube road, and the pto＝power take-off of oil hydraulic motor is coupled with the power input shaft of oil hydraulic pump; Motor reel is coupled with the power input shaft of oil hydraulic pump simultaneously; The liquid entering hole of oil hydraulic pump connects the former seawater of low pressure and enters pipeline, and the liquid port of oil hydraulic pump connects the former seawer inlet of reverse osmosis module high pressure.
2. the energy regenerating pressure method of oil hydraulic motor according to claim 1 and hydraulic pump combination, is characterized in that the power of motor is about 45% of whole former seawater pressurization power demand.
3. the energy regenerating pressure method of oil hydraulic motor according to claim 1 and hydraulic pump combination, it is characterized in that the power input shaft three of the pto＝power take-off of oil hydraulic motor, motor reel, oil hydraulic pump can arrange on the same axis, described three axles also can not be arranged on the same axis, but by mechanical transmission, the pto＝power take-off of oil hydraulic motor, motor reel are coupled simultaneously with the power input shaft of oil hydraulic pump.
4. an energy regenerating pressurization device for oil hydraulic motor and hydraulic pump combination, primarily of oil hydraulic motor, motor, oil hydraulic pump composition, is characterized in that the pto＝power take-off of oil hydraulic motor and motor reel are coupled with the power input shaft of oil hydraulic pump simultaneously.
5. the energy regenerating pressurization device of oil hydraulic motor according to claim 4 and hydraulic pump combination, it is characterized in that the liquid entering hole of oil hydraulic motor is the access port of reverse osmosis module high-pressure thick salt solution, the liquid port of oil hydraulic motor is the exhaust port of low-press thick salt solution, the liquid entering hole of oil hydraulic pump is the access port of the former seawater of low pressure, and the liquid port of oil hydraulic pump is the exhaust port of the former seawater of high pressure.
6. the energy regenerating pressurization device of oil hydraulic motor according to claim 4 and hydraulic pump combination, it is characterized in that the power input shaft three of the pto＝power take-off of oil hydraulic motor, motor reel, oil hydraulic pump can arrange on the same axis, described three axles also can not be arranged on the same axis, but by mechanical transmission, the pto＝power take-off of oil hydraulic motor, motor reel are coupled simultaneously with the power input shaft of oil hydraulic pump.
7. the energy regenerating pressurization device of oil hydraulic motor according to claim 4 and hydraulic pump combination, is characterized in that the power of motor is about 45% of whole former seawater pressurization power demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310682474.4A CN104712510A (en) | 2013-12-16 | 2013-12-16 | Energy recovery and pressurization method and device of hydraulic motor and hydraulic pump combination |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310682474.4A CN104712510A (en) | 2013-12-16 | 2013-12-16 | Energy recovery and pressurization method and device of hydraulic motor and hydraulic pump combination |
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| CN104712510A true CN104712510A (en) | 2015-06-17 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060065597A1 (en) * | 2004-09-29 | 2006-03-30 | Sisyan, R.L. De C.V. | Hybrid, reverse osmosis, water desalinization apparatus and method with energy recuperation assembly |
| CN2926197Y (en) * | 2006-03-23 | 2007-07-25 | 天津市蓬拓科技有限公司 | Reverse-osmose seawater desalination plant with energy recovery |
| CN103230745A (en) * | 2013-05-07 | 2013-08-07 | 杭州（火炬）西斗门膜工业有限公司 | Differential pressure booster-type energy recovery device based on reverse osmosis system |
| CN103423076A (en) * | 2012-05-22 | 2013-12-04 | 厦门锐思达机电科技有限公司 | Combined device for generating power through tidal power and desalinating sea water |
-
2013
- 2013-12-16 CN CN201310682474.4A patent/CN104712510A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060065597A1 (en) * | 2004-09-29 | 2006-03-30 | Sisyan, R.L. De C.V. | Hybrid, reverse osmosis, water desalinization apparatus and method with energy recuperation assembly |
| CN2926197Y (en) * | 2006-03-23 | 2007-07-25 | 天津市蓬拓科技有限公司 | Reverse-osmose seawater desalination plant with energy recovery |
| CN103423076A (en) * | 2012-05-22 | 2013-12-04 | 厦门锐思达机电科技有限公司 | Combined device for generating power through tidal power and desalinating sea water |
| CN103230745A (en) * | 2013-05-07 | 2013-08-07 | 杭州（火炬）西斗门膜工业有限公司 | Differential pressure booster-type energy recovery device based on reverse osmosis system |
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Application publication date: 20150617 |
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