CN101782095B - Differential energy recovery device and method for seawater desalination system - Google Patents
Differential energy recovery device and method for seawater desalination system Download PDFInfo
- Publication number
- CN101782095B CN101782095B CN 201010122952 CN201010122952A CN101782095B CN 101782095 B CN101782095 B CN 101782095B CN 201010122952 CN201010122952 CN 201010122952 CN 201010122952 A CN201010122952 A CN 201010122952A CN 101782095 B CN101782095 B CN 101782095B
- Authority
- CN
- China
- Prior art keywords
- pressure
- cavity
- piston
- water
- fluid cylinder
- 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.)
- Expired - Fee Related
Links
- 239000013535 sea water Substances 0.000 title claims abstract description 42
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 169
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 40
- 239000007788 liquid Substances 0.000 claims abstract description 20
- 239000012530 fluid Substances 0.000 claims description 72
- 238000007599 discharging Methods 0.000 claims description 16
- 230000033001 locomotion Effects 0.000 claims description 16
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 claims description 15
- 238000012546 transfer Methods 0.000 claims description 8
- 239000013505 freshwater Substances 0.000 claims description 5
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 239000012267 brine Substances 0.000 abstract description 8
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 abstract description 8
- 238000013461 design Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 239000012528 membrane Substances 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 7
- 238000011033 desalting Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 239000012266 salt solution Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000009466 transformation Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a differential energy recovery device and a method for a seawater desalination system, wherein the device comprises two hydraulic cylinders which are connected in parallel, each hydraulic cylinder is divided into two cavities by a piston, the piston is fixedly connected with a piston rod, a low-pressure raw water inlet is connected with two left cavities by a liquid inlet valve, the left cavities are connected with a high-pressure raw water outlet by a liquid discharge valve, the two right cavities are connected with a reversing valve, and the reversing valve is connected with a high-pressure concentrated water inlet and a low-pressure concentrated water discharge port; the method is that high-pressure concentrated water from the reverse osmosis device alternately enters the right-side cavities of the two hydraulic cylinders through the reversing valve, and low-pressure raw water in the left-side cavity is pushed to be pressurized and enter the reverse osmosis device. The invention adopts the principle of direct pressurization of the hydraulic cylinder to carry out special design, adopts primary energy conversion, ensures that the pressure of the high-pressure seawater subjected to pressure exchange is greater than the pressure of the strong brine, does not need a booster pump for secondary pressurization, has high energy conversion efficiency, saves the operation cost and further reduces the energy consumption of a reverse osmosis system.
Description
Technical field
The present invention relates to the desalination of sea water field, specifically, relate to a kind of differential energy recovery device and the method for reverse osmosis seawater desalination system.
Background technique
An important goal of desalination technology development is to reduce operating cost, and the shared proportion maximum of energy consumption is to reduce the most effectively means of desalination of sea water cost so cut down the consumption of energy in the formation of operating cost.Reverse osmosis seawater desalting is one of mainstream technology of present desalination of sea water; The reverse osmosis seawater desalting process need consume a large amount of electric energy and promote intake pressure to overcome the osmotic pressure of water; The dense water overbottom pressure that reverse osmosis membrane is discharged is up to 5.5～6.5MPa; The recovery rate according to 40% is calculated; Also contain about 60% feed water pressure energy in the brine of discharging, this part energy is reclaimed become the energy consumption that water energy into can significantly reduce reverse osmosis seawater desalting, and this purpose realizes depending on the energy recovery technology of utilizing.
Since the seventies, along with reverse osmosis technology is applied to seawater/brackish water desalination, various forms of energy recycle devices also occur in succession.Energy recycle device has hydraulic turbine formula energy recycle device and Work-exchange type energy recovery device two big classes at present.
Energy recycle device the earliest is the hydraulic turbine formula; The Pelton Wheel turbine engine of Switzerland Calder.AG company and the Francis turbine engine of PumpGinard company; Efficient is generally 50%-70%, and its principle is to utilize brine to drive turbine rotation, links to each other with motor with pump through axle; With the former seawater of energy transport to charging, process need is through " water pressure energy---mechanical energy---water pressure energy " two steps conversion.Through improving, some unique design occurred on the superincumbent basis, the wherein representative BMET turbine that has Denmark Grundfos company to produce directly drives the HydraulicTurbocharger of pump and the production of U.S. PEI company.Both all are turbine and pump integrated design, and a rotating shaft connects two impellers, all are encapsulated in the housing, impact blade when brine flows through impeller and promote wheel rotation, thereby drive the turbine spindle rotation.Turbine spindle directly drives suction booster work output mechanical work, and dense water transformation of energy becomes the energy conversion efficiency of former seawater can be increased to 65%-80%.High-pressure service pump and turbine suction booster two-stage series connection are accomplished the boost in pressure of former seawater, reduce the needed lift of high-pressure service pump through the turbine supercharging, reduce motor power consumption.But,, increased the mechanical energy loss, so efficient is lower owing to all will pass through " water pressure energy---mechanical energy---water pressure energy " two steps conversion on the hydraulic turbine formula energy recycle device principle.
The eighties; A kind of new energy recovery technology occurred, its working principle is " merit exchange ", through interface or spacer; Directly give the charging seawater propagation of pressure of high-pressure thick salt solution; Process obtains simplifying, and only needs through " water pressure energy---water pressure energy " step transformation of energy, and energy recovery efficiency can be improved.The Work-exchange type energy recovery device of using in the reverse osmosis seawater desalting engineering at present is mainly two types of rotator type pressure exchanger and piston valve governor pressure exchangers, and efficient can be up to 90-97%.
The rotator type pressure exchanger is representative with the PX rotator type pressure exchange energy reclaiming device of U.S. ERI company.Principle is that high-pressure thick salt solution promotes the no axle ceramic rotor rotation that circumference has a plurality of longitudinal grooves (being similar to a plurality of miniature fluid cylinders); Static thrust plate zone of high pressure and low pressure area replaces the conversion incision in both sides respectively to make a plurality of microchannels; The miniature fluid cylinder that gets into the zone of high pressure carries out the energy recovery transmission to exterior liquid; The miniature fluid cylinder that gets into low pressure area carries out former seawater fluid infusion; PX need add press pump and promote the former seawater tentatively boost and get into the RO system, high-pressure thick salt solution directly with the former seawater transmission of low pressure pressure.On the one hand, increase pump owing to must be equipped with, rotator type pressure exchanger cost is than higher; On the other hand, rotor rotate sharp ear-piercing, noise is big, in case get into bubble, impurity etc. in the rotor, just be very easy to be damaged, poor reliability,
Piston valve governor pressure exchanger is representative with the SalTec DT pressure exchanger of the two merit exchange energy reclaiming devices of the DWEER of Switzerland Calder.AG company, German KSB company, the PES pressure-exchange system of German Siemag Transplan company and the DYPREX power pressure exchanger of Ionics company.Principle is to adopt two major diameter fluid cylinders; The dense water of one of them fluid cylinder mesohigh promotes piston and gives the former seawater of low pressure to exterior liquid energy transfer; Charging pump is pressed into the former seawater fluid infusion of low pressure and discharges low-press thick water in another fluid cylinder; Two fluid cylinders are alternately arranged under the control of PLC and dense water selector valve and are mended seawater, realize becoming dense water transformation of energy the callback course of former seawater energy.Piston valve governor pressure exchanger need be equipped with suction booster and promote the former seawater tentatively boost and get into the RO system, and suction booster need adopt the material of seawater corrosion resistance, and also very high to seal request, buys through the import mode at present, and cost is very high.
Summary of the invention
The technical problem that the present invention will solve provides a kind of defective that can remedy existing technology; Reclaim the differential energy recovery device and the method for reverse osmosis seawater desalting high-pressure thick salt solution overbottom pressure energy; In order to promote the pressure of the former seawater of low pressure; Accomplish the energy interchange between two kinds of high low pressure liquid, realize the purpose of energy saving.
In order to solve the problems of the technologies described above, energy recycle device of the present invention is achieved through following technological scheme:
A kind of differential energy recovery device that is used for seawater desalination system; Comprise the low pressure original water inlet that is connected in low pressure raw water pump water outlet, the former water out of high pressure that is connected in high pressure raw water pump water outlet, the high-pressure thick water inlet that is connected in reverse osmosis unit high-pressure thick water water outlet; Comprise that also identical set inside has first fluid cylinder of first piston and second fluid cylinder that set inside has second piston; Said first piston is divided into first cavity and second cavity with said first fluid cylinder; Said first piston is connected with the first piston bar; Said second piston is divided into the 3rd cavity and the 4th cavity with said second fluid cylinder, and said second piston is connected with second piston rod;
Said low pressure original water inlet connects said first cavity through the first feed liquor valve, and said first cavity connects the former water out of said high pressure through first liquid discharging valve, and said second cavity is connected in two position-5 way valves;
Said low pressure original water inlet connects said the 3rd cavity through the second feed liquor valve, and said the 3rd cavity connects the former water out of said high pressure through second liquid discharging valve, and said the 4th cavity is connected in two position-5 way valves;
Said two position-5 way valves are connected in the high-pressure thick water inlet, and are connected with the low-press thick water outlet.
As optimized technical scheme comparatively:
Said two position-5 way valves drive through the selector valve drive unit.
Said selector valve drive unit is wherein a kind of of fluid pressure drive device, actuating device of atmospheric pressure or electric energy drive unit.
Said selector valve drive unit is a fluid pressure drive device.
The high-pressure thick water out place of said reverse osmosis unit is provided with buffer.
Said first piston bar and said second piston rod are separately installed with sleeve, and said sleeve is provided with limit sensors.
Said first piston bar bar directly is 25%～40% of a said first piston diameter, and the said second piston rod bar directly is 25%～40% of said second piston diameter.
The said first feed liquor valve, the second feed liquor valve, first liquid discharging valve, second liquid discharging valve are respectively conical surface seal.
Energy reclaiming method of the present invention is achieved through following technological scheme:
A kind of differential type energy reclaiming method that is used for seawater desalination system that utilizes said apparatus to realize, form by following steps successively:
A. the selector valve drive unit transfers to position one with two position-5 way valves, makes second cavity and the high-pressure thick water inlet UNICOM of first fluid cylinder, the 4th cavity of second fluid cylinder and low-press thick water outlet UNICOM;
B. make the former water of low pressure feed the low pressure raw water pump, once pressurize;
C. the former water of low pressure after once pressurizeing gets into first cavity of high pressure raw water pump, first fluid cylinder and the 3rd cavity of second fluid cylinder respectively by the former water out of low pressure;
D. the former water of low pressure that gets into the high pressure raw water pump gets into reverse osmosis unit through secondary pressurization back, discharges low pressure fresh water and high-pressure thick water;
E. high-pressure thick water gets into second cavity of first fluid cylinder through two position-5 way valves; Promote the motion of first piston and first piston bar; The former water pressurization of once pressurization in first cavity is discharged, and converge the entering reverse osmosis unit with the former water of the high pressure of the former water out of high pressure;
F. work as first piston and move to spacing position; Feedback through limit sensors; The selector valve drive unit transfers to position two with two position-5 way valves, makes second cavity and the low-press thick water outlet UNICOM of first fluid cylinder, the 4th cavity of second fluid cylinder and high-pressure thick water inlet UNICOM;
G. high-pressure thick water gets into the 4th cavity of second fluid cylinder through two position-5 way valves; Promote second piston and second piston rod movement; The former water pressurization of once pressurization in the 3rd cavity is discharged; And converging the entering reverse osmosis unit with the former water of the high pressure of the former water out of high pressure, the former water of once pressurization in first cavity promotes first piston and the motion of first piston bar simultaneously, the discharge of the low-press thick water in second cavity;
H. arrive spacing position when second piston motion, through the feedback of limit sensors, the selector valve drive unit transfers to position one with two position-5 way valves;
I. high-pressure thick water gets into second cavity of first fluid cylinder through two position-5 way valves; Promote the motion of first piston and first piston bar; The former water pressurization of once pressurization in first cavity is discharged; And converging the entering reverse osmosis unit with the former water of the high pressure of the former water out of high pressure, the former water of once pressurization in the 3rd cavity promotes second piston and second piston rod movement simultaneously, the discharge of the low-press thick water in the 4th cavity;
J. after this circulation is carried out step (f) to step (i).
The invention has the beneficial effects as follows:
(1) adopt the direct supercharging principle of fluid cylinder to carry out particular design, adopt the primary energy conversion, the high pressure sea water pressure after the process pressure-exchange is greater than brine pressure; Do not need suction booster supercharging once more; Energy conversion efficiency is high, has saved operating cost, has further reduced the energy consumption of counter-infiltration system.
(2) because piston is connected with the piston rod with certain cross-sectional area; Make pressure in the inner former seawater of the fluid cylinder chamber always greater than the pressure in the brine chamber; Fundamentally avoided the leakage of brine to former seawater, the increase of film seawater salinity causes the extra problem that increases of desalination energy consumption owing to brine causes into to former seawater seepage to have solved import merit exchange energy reclaiming device.
(3) adopt the electromechanical integration control technique; Control two synchronisms that the fluid cylinder inner carrier moves; And piston moves the synchronism that commutates with two position-5 way valves, the pressure surge that the reduction pressure-exchange causes owing to the high low pressure conversion, thereby the mechanical failure of avoiding " water hammer " water hammer that film is caused; Improved the reliability of energy recycle device simultaneously, device can steadily reliably over a long time be turned round.
(4) design hydraulically powered two five-way valves and tubular type flow-distributing valve be as one-way valve, and one-way valve is conical surface seal, replaces high-pressure air operated valve or mortor operated valve, improved the stationarity and the reliability of installing, and reduced cost.
(5) at the high-pressure thick water out place of reverse osmosis unit buffer is installed, the further pressure surge of abatement system.
(6) on piston rod, be provided with sensor, monitor, feed back and regulate and control the motion state and the position of piston at any time, so that whole device is carried out the optimization debugging through sleeve.
(7) on the energy recycle device detection platform, carry out simulation test; Test relevant performance parameter; On the reverse osmosis seawater desalting all-around test stand, carry out actual coupling test with high-pressure service pump and reverse osmosis membrane; Adorning 6 seawater reverse osmosis membranes with the most frequently used in an engineering pressurized container is baseline configuration equipment, the design recovery rate 40%, and the energy recycle device flow of coupling is 120m
3/ d, the result shows that energy recovery efficiency is greater than 90%.
Description of drawings
Fig. 1 is the structural representation of differential energy recovery device of the present invention;
Fig. 2 is position one phase diagram of differential type energy reclaiming method of the present invention;
Fig. 3 is the position two-state figure of differential type energy reclaiming method of the present invention.
---the former water out of 1 high pressure---2 first liquid discharging valve---3 among the figure: the low pressure original water inlet
The first feed liquor valve---4 first piston bars---5 first fluid cylinder---6
First cavity---7 first pistons---8 second cavity---9
High-pressure thick water inlet---10 low-press thick water outlets---11 liang of position-5 way valves---12
The 4th cavity---13 second fluid cylinders---14 second piston---15
The 3rd cavity---16 second piston rods---17 second feed liquor valve---18
Second liquid discharging valve---19 low pressure raw water pumps---20 former water inlet---21
High pressure raw water pump---22 reverse osmosis units---23 water outlet---24
Buffer---25 selector valve drive unit---26
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is made further detailed description:
Seawater desalination system comprises that being provided with former water goes into 21 low pressure raw water pump 20; The water outlet of said low pressure raw water pump 20 is connected in the water inlet of high pressure raw water pump 22 through low pressure original water inlet 1, and said high pressure raw water pump 22 is connected on the reverse osmosis unit 23 through the former water out 2 of high pressure.Reverse osmosis unit 23 inside go out high-pressure thick water through reverse osmosis membrane filtration, and what see through reverse osmosis membrane is fresh water, and fresh water is collected through water outlet 24.
The invention discloses a kind of differential energy recovery device that is used for seawater desalination system, and the differential type energy reclaiming method that utilizes said apparatus to realize.
As shown in Figure 1; Differential energy recovery device comprises the first identical and parallelly connected fluid cylinder 6 and second fluid cylinder 14; Said first fluid cylinder, 6 set inside have first piston 8; Said first piston 8 is divided into first cavity 7 and second cavity 9 with first fluid cylinder 6, and said first piston 8 is connected with first piston bar 5.Same, said second fluid cylinder, 14 set inside have second piston 15, and said second piston 15 is divided into the 3rd cavity 16 and the 4th cavity 13 with second fluid cylinder 14, and said second piston 15 is connected with second piston rod 17.
Said first piston bar 5 bars directly are 25%～40% of said first piston 8 diameters; Likewise, said second piston rod, 17 bars footpath also is 25%～40% of said second piston, 15 diameters, and like this, can reach increases by 1.06～1.18 times purpose.The said first piston bar 5 and second piston rod 17 also are separately installed with sleeve, and sleeve is provided with limit sensors, can be used for to the electric control system feedback signal.
Said low pressure original water inlet 1 is connected in said first cavity 7 through the first feed liquor valve 4 respectively, connects said the 3rd cavity 16 through the second feed liquor valve 18.
The 3rd cavity 16 of said second fluid cylinder 14 is connected in the former water out 2 of high pressure of said high pressure raw water pump 22 through second liquid discharging valve 19, and the 4th cavity 13 of said second fluid cylinder 14 is connected in two position-5 way valves 12.
Said two position-5 way valves 12 are connected in high-pressure thick water inlet 10, and are connected with low-press thick water outlet 11.Said two position-5 way valves 12 drive through selector valve drive unit 26, and said two position-5 way valves, 12 inner moving elements can be straight line motions, also can be to rotatablely move.
Said selector valve drive unit 26 can be wherein any one of fluid pressure drive device, actuating device of atmospheric pressure or electric energy drive unit; But preferred hydraulic driving; Hydraulically powered advantage is, can make two position-5 way valves, 12 internal operations steady, and it is less to take up room simultaneously.
High-pressure thick water out 10 places of said reverse osmosis unit 23 can also be provided with buffer 25, and said buffer 25 can further be subdued the pressure surge that moment causes because piston commutates.
The above-mentioned first feed liquor valve 4, the second feed liquor valve 18, first liquid discharging valve 3, second liquid discharging valve 19 are unidirectional tubular type flow-distributing valve, are respectively conical surface seal, improve sealing effect.
The placing direction of said first fluid cylinder 6 and second fluid cylinder 14 and reverse osmosis unit 23 laid parallels can be saved the space.
Below, be that example is done specific descriptions to differential type energy reclaiming method of the present invention with a medium tache in the recovery method:
As shown in Figure 2, selector valve drive unit 26 transfers to position one with two position-5 way valves 12, makes second cavity 9 and high-pressure thick water inlet 10 UNICOMs of first fluid cylinder 6, the 4th cavity 13 and low-press thick water outlet 11 UNICOMs of second fluid cylinder 14.
The former water of low pressure once pressurizes by getting into former water inlet 1 entering low pressure raw water pump 18, the former moisture two-way after once pressurizeing, and one the tunnel gets into first cavity 7 of first fluid cylinder 6 or the 3rd cavity 16 of second fluid cylinder 14, and another road gets into high pressure raw water pump 22.The former water of once pressurization that gets into high pressure raw water pump 22 gets into reverse osmosis unit 23 through secondary pressurization back, and what see through reverse osmosis membrane is low pressure fresh water, and the water that does not see through reverse osmosis membrane is high-pressure thick water.
High-pressure thick water is through passing through two position-5 way valves 12 through high-pressure thick water inlet 10; Get in second cavity 9 of first fluid cylinder 6; Second cavity, 9 inner high-pressure thick water promote first piston 8 and rigidly connected with it first piston bar 5 moves to the direction that first piston bar 5 stretches out together; The former water pressurization of the inner once pressurization of first cavity 7, and converge through the former water of high pressure that first liquid discharging valve 3 comes out with high pressure raw water pump 22 and to get into reverse osmosis membrane.Said first liquid discharging valve 3 approximately is 3: 2 with the water flow ratio of said high pressure raw water pump 22 water outlets.
Simultaneously; The former water that once pressurizes that comes out from low pressure raw water pump 20 gets into the 3rd cavity 16 of second fluid cylinder 14 through the second feed liquor valve, 18 parts; The former water that the 3rd cavity 16 inside have a certain pressure promotes second piston 15 and rigidly connected with it second piston rod 17 together to the motion of second fluid cylinder, 14 bottoms, the inner dense water release of the 4th cavity 13.
As shown in Figure 3; When first fluid cylinder, 6 inner first pistons 8 move to spacing position; Limit sensors on first piston bar 5 sleeves sends feedback signal; Electric control system drives two position-5 way valves 12 through selector valve drive unit 26 and commutates to position two, makes second cavity 9 and low-press thick water outlet 11 UNICOMs of first fluid cylinder 6, the 4th cavity 13 high-pressure thick water inlets 10 UNICOMs of second fluid cylinder 14.
The high-pressure thick water that comes out from reverse osmosis unit 23 gets into the 4th cavity 13 of second fluid cylinder 14 through two position-5 way valves 12; Promote the direction motion that second piston 15 and rigidly connected with it second piston rod 17 stretch out to second piston rod 17 together; The pressurization of the former water in the 3rd cavity 16, the former water of high pressure that comes out with high pressure raw water pump 22 through second liquid discharging valve 19 converges and gets into reverse osmosis membrane.
The former water that once pressurizes that comes out from low pressure raw water pump 20 simultaneously gets into first cavity 7 of first fluid cylinder 6 through the first feed liquor valve, 4 parts; Former water promotion first piston 8 and rigidly connected with it first piston bar 5 that first cavity, 7 inside have certain pressure move to first fluid cylinder, 6 bottoms together, release second cavity, 9 inner dense water.
When second fluid cylinder, the 14 second inner pistons 15 move to spacing position; Limit sensors on second piston rod, 17 sleeves sends feedback signal; 26 actions of electric control system accessory drive; Push back position one shown in Figure 1 to two position-5 way valves 12, thereby realize first fluid cylinder 6 and 14 alternations of second fluid cylinder.
Although combine accompanying drawing that the preferred embodiments of the present invention are described above; But the present invention is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, is not restrictive; Those of ordinary skill in the art is under enlightenment of the present invention; Not breaking away under the scope situation that aim of the present invention and claim protect, can also make the concrete conversion of a lot of forms, these all belong within protection scope of the present invention.
Claims (3)
1. differential energy recovery device that is used for seawater desalination system; Comprise the low pressure original water inlet that is connected in low pressure raw water pump water outlet, the former water out of high pressure that is connected in high pressure raw water pump water outlet, the high-pressure thick water inlet that is connected in reverse osmosis unit high-pressure thick water water outlet; It is characterized in that
Comprise that also identical set inside has first fluid cylinder of first piston and second fluid cylinder that set inside has second piston; Said first piston is divided into first cavity and second cavity with said first fluid cylinder; Said first piston is connected with the first piston bar; Said second piston is divided into the 3rd cavity and the 4th cavity with said second fluid cylinder, and said second piston is connected with second piston rod;
Said low pressure original water inlet connects said first cavity through the first feed liquor valve, and said first cavity connects the former water out of said high pressure through first liquid discharging valve, and said second cavity is connected in two position-5 way valves;
Said low pressure original water inlet connects said the 3rd cavity through the second feed liquor valve, and said the 3rd cavity connects the former water out of said high pressure through second liquid discharging valve, and said the 4th cavity is connected in two position-5 way valves;
Said two position-5 way valves are connected in the high-pressure thick water inlet, and are connected with the low-press thick water outlet;
Said two position-5 way valves drive through the selector valve drive unit;
The high-pressure thick water out place of said reverse osmosis unit is provided with buffer;
Said first piston bar and said second piston rod are separately installed with sleeve, and said sleeve is provided with limit sensors;
Said first piston bar bar directly is 25%～40% of a said first piston diameter, and the said second piston rod bar directly is 25%～40% of said second piston diameter.
2. a kind of differential energy recovery device that is used for seawater desalination system according to claim 1 is characterized in that, said selector valve drive unit is wherein a kind of of fluid pressure drive device, actuating device of atmospheric pressure or electric energy drive unit.
3. a differential type energy reclaiming method that is used for seawater desalination system that utilizes the said device of claim 1 to realize is characterized in that, is made up of following steps successively:
A. the selector valve drive unit transfers to position one with two position-5 way valves, makes second cavity and the high-pressure thick water inlet UNICOM of first fluid cylinder, the 4th cavity of second fluid cylinder and low-press thick water outlet UNICOM;
B. make the former water of low pressure feed the low pressure raw water pump, once pressurize;
C. the former water of low pressure after once pressurizeing gets into the-cavity of high pressure raw water pump, first fluid cylinder and the 3rd cavity of second fluid cylinder respectively by the former water out of low pressure;
D. the former water of low pressure that gets into the high pressure raw water pump gets into reverse osmosis unit through secondary pressurization back, discharges low pressure fresh water and high-pressure thick water;
E. high-pressure thick water gets into second cavity of first fluid cylinder through two position-5 way valves; Promote the motion of first piston and first piston bar; The former water pressurization of once pressurization in first cavity is discharged, and converge the entering reverse osmosis unit with the former water of the high pressure of the former water out of high pressure;
F. work as first piston and move to spacing position; Feedback through limit sensors; The selector valve drive unit transfers to position two with two position-5 way valves, makes second cavity and the low-press thick water outlet UNICOM of first fluid cylinder, the 4th cavity of second fluid cylinder and high-pressure thick water inlet UNICOM;
G. high-pressure thick water gets into the 4th cavity of second fluid cylinder through two position-5 way valves; Promote second piston and second piston rod movement; The former water pressurization of once pressurization in the 3rd cavity is discharged; And converging the entering reverse osmosis unit with the former water of the high pressure of the former water out of high pressure, the former water of once pressurization in first cavity promotes first piston and the motion of first piston bar simultaneously, the discharge of the low-press thick water in second cavity;
H. arrive spacing position when second piston motion, through the feedback of limit sensors, the selector valve drive unit transfers to position one with two position-5 way valves;
I. high-pressure thick water gets into second cavity of first fluid cylinder through two position-5 way valves; Promote the motion of first piston and first piston bar; The former water pressurization of once pressurization in first cavity is discharged; And converging the entering reverse osmosis unit with the former water of the high pressure of the former water out of high pressure, the former water of once pressurization in the 3rd cavity promotes second piston and second piston rod movement simultaneously, the discharge of the low-press thick water in the 4th cavity;
J. after this circulation is carried out step (f) to step (i).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010122952 CN101782095B (en) | 2010-03-12 | 2010-03-12 | Differential energy recovery device and method for seawater desalination system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010122952 CN101782095B (en) | 2010-03-12 | 2010-03-12 | Differential energy recovery device and method for seawater desalination system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101782095A CN101782095A (en) | 2010-07-21 |
| CN101782095B true CN101782095B (en) | 2012-05-23 |
Family
ID=42522221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010122952 Expired - Fee Related CN101782095B (en) | 2010-03-12 | 2010-03-12 | Differential energy recovery device and method for seawater desalination system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101782095B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594118A (en) * | 2019-09-06 | 2019-12-20 | 北京朗新明环保科技有限公司 | High salt water energy conversion control system |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040261B (en) * | 2010-11-04 | 2012-10-31 | 杭州水处理技术研究开发中心有限公司 | Water-pressure automatic transposition energy recovery device |
| CN101985951B (en) * | 2010-11-04 | 2013-01-30 | 杭州水处理技术研究开发中心有限公司 | Electric-hydraulic reversing energy recovery device |
| WO2012073693A1 (en) * | 2010-12-02 | 2012-06-07 | 東レ株式会社 | Reverse osmosis membrane separator, start-up method therefor, and method for producing permeate |
| CN102553442B (en) * | 2012-01-17 | 2013-11-06 | 浙江大学 | Hollow rotor misalignment channel hydraulic rotary piston multi-pass supercharger |
| CN103230745B (en) * | 2013-05-07 | 2014-10-15 | 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 |
| WO2014180092A1 (en) * | 2013-05-07 | 2014-11-13 | 杭州（火炬）西斗门膜工业有限公司 | Pressure-difference boost-type energy recycling apparatus based on reverse osmosis system |
| CN103977708B (en) * | 2014-04-30 | 2016-01-20 | 天津大学 | Electricity drives from supercharging rotator type energy recycle device |
| CN104310621B (en) * | 2014-10-12 | 2016-08-24 | 张志雄 | A kind of clip clutch shaft carborundum aluminium alloy island drinking-water instrument for extracting |
| JP6940680B2 (en) * | 2017-08-04 | 2021-09-29 | 南京非并網新能源科技有限公司Ｎａｎｊｉｎｇ Ｎｏｎ Ｇｒｉｄ Ｃｏｎｎｅｃｔｅｄ Ａｍｐｅｒｅｘ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ． | New energy efficient seawater desalination system |
| CN108506178B (en) * | 2018-03-28 | 2024-03-01 | 天津融渌众乐科技有限公司 | Energy recovery device combined with temperature difference driving and composite system thereof |
| CN108571434A (en) * | 2018-05-17 | 2018-09-25 | 南京非并网新能源科技有限公司 | The seawater force (forcing) pump of function is recycled with potential energy |
| CN108915972A (en) * | 2018-07-25 | 2018-11-30 | 中煤科工集团重庆研究院有限公司 | Plunger type two-cavity pressure potential energy exchange recovery system and method |
| CN109205736B (en) * | 2018-09-12 | 2023-05-23 | 天津工业大学 | Stirling cycle-based thermal drive free piston reverse osmosis sea water desalination power system |
| CN110316884B (en) * | 2019-07-02 | 2021-06-01 | 江苏科技大学 | SWRO and MCDI coupling seawater desalination device system with energy recovery function |
| CN110594119B (en) * | 2019-09-06 | 2021-01-15 | 北京朗新明环保科技有限公司 | High salt water energy conversion device |
| CN111204892A (en) * | 2020-02-26 | 2020-05-29 | 苏州新派特信息科技有限公司 | Seawater desalination and permeation device |
| CN112983915B (en) * | 2021-03-15 | 2024-09-27 | 广东环境保护工程职业学院 | Self-driven piston type pressure energy recovery device |
| CN114956263B (en) * | 2022-07-21 | 2022-10-25 | 威海海洋职业学院 | Sea water desalination equipment for boats and ships |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461915Y (en) * | 2000-12-29 | 2001-11-28 | 刘博渊 | Reverse osmosis unit with piston type energy recoverer |
| CN201606355U (en) * | 2010-03-12 | 2010-10-13 | 国家海洋局天津海水淡化与综合利用研究所 | Differential energy recovering device used for seawater desalting system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101297083B (en) * | 2005-10-31 | 2011-07-06 | 株式会社小松制作所 | Control device of work machine |
-
2010
- 2010-03-12 CN CN 201010122952 patent/CN101782095B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2461915Y (en) * | 2000-12-29 | 2001-11-28 | 刘博渊 | Reverse osmosis unit with piston type energy recoverer |
| CN201606355U (en) * | 2010-03-12 | 2010-10-13 | 国家海洋局天津海水淡化与综合利用研究所 | Differential energy recovering device used for seawater desalting system |
Non-Patent Citations (1)
| Title |
|---|
| 杨守智等.反渗透工艺高压浓水能量回收新技术应用.《节能》.2005,(第05期), * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594118A (en) * | 2019-09-06 | 2019-12-20 | 北京朗新明环保科技有限公司 | High salt water energy conversion control system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101782095A (en) | 2010-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101782095B (en) | Differential energy recovery device and method for seawater desalination system | |
| CN101408107B (en) | Energy-saving type shield propulsion hydraulic system by using zone control | |
| CN101254407A (en) | Three-cylinder three piston type recuperator for reverse osmosis seawater desalination | |
| CN201288566Y (en) | Energy-saving shield advance hydraulic system employing zone control | |
| CN101581328A (en) | United piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination system | |
| CN106379961A (en) | Multi-section reverse-osmosis seawater desalination and saline water potential difference energy power generation coupling system | |
| CN201606355U (en) | Differential energy recovering device used for seawater desalting system | |
| CN102040261B (en) | Water-pressure automatic transposition energy recovery device | |
| CN103191642A (en) | Pressure exchange cylinder and valve-control pressure exchanger for reverse osmosis desalting system | |
| CN209586823U (en) | A kind of shield excavation machine hydraulic propelling system | |
| CN103230745B (en) | Differential pressure booster-type energy recovery device based on reverse osmosis system | |
| CN103306879A (en) | Electromechanical integration type turbine type energy recycling device assembly | |
| CN102815766B (en) | Liquid pressure energy recovery device based on full rotation valves | |
| CN105800734B (en) | New energy efficient plunger pump desalination plant system | |
| CN203905918U (en) | Energy-saving water injection supercharging device | |
| CN201407250Y (en) | Joint piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination system | |
| CN101456607B (en) | Water pressure driven switching valve group | |
| CN105883977B (en) | A kind of energy regenerating Miniature seawater desalination device of and plunger pump cooperation | |
| CN109538558A (en) | A kind of symmetrical hydraulic cylinder series connection propulsion system of shield excavation machine double piston-rod | |
| CN103821690A (en) | Hydraulic drive reciprocating duplex pump | |
| CN204369472U (en) | For pile driver bavin electric hybrid drive system and adopt the pile driver of this system | |
| CN102865259A (en) | Pressure exchanger | |
| CN201882933U (en) | Device for transmitting wind energy to desalt seawater for hydraulic system | |
| CN102464362B (en) | Device for desalinating seawater by transmitting wind energy by hydraulic system | |
| CN206762665U (en) | Desalinization apparatus for energy recovery |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20170312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |