CN104131956A - Magnetic control type energy recovery pump for reverse osmosis seawater desalination system - Google Patents
Magnetic control type energy recovery pump for reverse osmosis seawater desalination system Download PDFInfo
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- CN104131956A CN104131956A CN201310161492.8A CN201310161492A CN104131956A CN 104131956 A CN104131956 A CN 104131956A CN 201310161492 A CN201310161492 A CN 201310161492A CN 104131956 A CN104131956 A CN 104131956A
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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
- Y02A20/131—Reverse-osmosis
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Abstract
The invention relates to a magnetic control type energy recovery pump for a reverse osmosis seawater desalination system. The magnetic control type energy recovery pump comprises a piston (1), a piston rod (2), a magnetic ring (3), a cylinder barrel (4), a connecting table base (5), an end cover (6) and a pull rod (9), wherein the connecting table base (5) is arranged in the middle of the cylinder barrel (4) to divided the cylinder barrel (4) into a left side cylinder barrel and a right side cylinder barrel; the piston (1) consists of a left side piston and a right side piston, wherein the left side piston is arranged in the left side cylinder barrel, and the right side piston is arranged in the right side cylinder barrel; and the two ends of the piston rod (2) are respectively connected with the left side piston and the right side piston after penetrating through the connecting table base (5). Compared with the prior art, the magnetic control type energy recovery pump has such advantages as simple structure, easy maintenance, low cost, low energy consumption and flow measurability, can be used for seawater desalination, and also can be applied to brackish water desalination and other high-salt-content water treatment systems.
Description
Technical field
The present invention relates to a kind of energy recovery pump, especially relate to a kind of magnet controlled energy recovery pump for reverse osmosis seawater desalination system.
Background technique
China is in serious water resources deficiency state, and the situation of lack of water is also in going from bad to worse, and has also put into effect " the strictest water resources management system " for this situation China.Desalination technology, as the important means of alleviating water resources shortage, has been subject to increasing attention.In numerous desalination technologies, hyperfiltration, because cost is lower, has progressively become market mainstream technological means.
Reverse-osmosis Seawater Desalination Technology is to utilize high-pressure service pump that raw material seawater is pressurizeed, make its pressure reach reverse osmosis operation pressure 5.0～7.0MPa (different depending on seawater salinity), then make the seawater after pressurization flow to the reverse osmosis membrane in reverse osmosis membrane device, its part sees through reverse osmosis membrane becomes fresh water, and another part becomes brine and discharges.Because pressure in brine is still very high, if not being used, one ton of needed power consumption of fresh water of every product is more than 10KW.h.
Adopt in early days the seawater desalination system of hyperfiltration for reducing product water power consumption per ton, adopted the method that improves the front pressure of reverse osmosis membrane more.But this method is subject to the highest restriction of bearing pressure, depositing the poorly soluble salt limit recovery rate, the concentration polarization limit recovery rate and high-pressure service pump lift of reverse osmosis membrane, and power consumption still rests on more than 8KW.h.The eighties in 20th century Energy Recovery Technology adopted in a large number, what it adopted is reverses pump and Pei Erdun impeller type energy recycle device, it can effectively reclaim the energy in discarded high pressure sea water, thereby power consumption is reduced greatly; Later stage has been developed again hydraulic turbine type energy recycle device, and a ton water power consumption is further reduced; Directly contact in recent years the development of positive displacement technology along with fluid, reach more than 90% taking piston type merit exchanger and rotary pressure exchanger as the energy recycle device energy recovery efficiency of new generation of representative, thereby the power consumption of one ton of fresh water of every product is reduced to below 4KW.h.
The piston type merit exchanger type of skill adopting at present has three kinds.The first is isobaric switch type, if the DWEER type piston type merit exchanger of A Keling company is homalographic piston, the dense water pressure of exchanger inner high voltage is equated with the former water pressure entering in chamber, thereby realize the recoverable object of pressure; The second is the switch type that boosts, the boost type energy recovering device of being developed as Tianjin desalination of sea water and comprehensive utilizating research is single-piston rod piston, high-pressure thick water acts on piston-rodless one side and former water has acted on piston rod one side, thereby make the dense water pressure of former water pressure higher pressure high, realized the effect of energy recovery with supercharging; The third is differential pressure switch type, and as the Clark pump of Spactra company of the U.S., it is connected that it is similar to two single-piston rod piston cylinders, by utilizing high-pressure section piston area product moment and low-pressure section pressure difference to reach the object of energy recovery and supercharging.In above three kinds of technology, first two need to be used high-pressure service pump, does not have the function of suction booster; The third,, owing to having from function of increasing pressure, therefore does not need to use high-pressure service pump, can be referred to as energy recovery pump.
Differential pressure switch type energy recovery pump, owing to need not using high-pressure service pump, so system cost can reduce greatly, has very large market potential.But differential pressure switch type energy recovery pump is water pressing control at present, is provided with the parts that are similar to control valve in function therein in runner, thereby make its structure comparatively complicated; And it adopts welded structure mostly, and maintainalbility is poor, and cost is higher simultaneously.
Summary of the invention
Object of the present invention be exactly provide in order to overcome the defect that above-mentioned prior art exists a kind of simple in structure, be easy to the magnet controlled energy recovery pump for reverse osmosis seawater desalination system safeguarded, cost is low, energy consumption is low.
Object of the present invention can be achieved through the following technical solutions: a kind of magnet controlled energy recovery pump for reverse osmosis seawater desalination system, comprise piston, piston rod, magnet ring, cylinder barrel, connect pedestal, end cap, pull bar, described connection pedestal is arranged in the middle of cylinder barrel, cylinder barrel is divided into left side cylinder barrel and right side cylinder barrel, described piston comprises left hand piston and right hand piston, wherein left hand piston is placed in the cylinder barrel of left side, right hand piston is placed in the cylinder barrel of right side, described piston rod two ends connect respectively left hand piston and right hand piston through connecting pedestal, described magnet ring is arranged on piston or piston rod, described end bracket enclosed is connected to cylinder barrel two ends, described cylinder barrel, connect pedestal, end cap is fastenedly connected by pull bar.
Described end cap comprises left side end cap and right side end cap, and left side end cap is connected to cylinder barrel left end, and right side end cap is connected to cylinder barrel right side, all seals by seal ring.
Described cylinder barrel all seals by seal ring with connecting between pedestal and piston.
Between described piston and piston rod, by bolton, described end cap, connect and on pedestal, be provided with the mounting hole of installing for pull bar, pull bar from mounting hole through rear employing fastening nuts.
Described magnet ring comprises left side magnet ring and right side magnet ring, is arranged on respectively left hand piston or right hand piston bottom or end face, or is arranged on piston rod.Be that magnet ring is installed on piston shell of column; Can be installed on piston shell of column, piston end surface and piston rod with magnetic patch or other form.
Described piston, connect pedestal and end cap cylinder barrel is divided into four sealed chamber: between left side end cap and left hand piston, form the first chamber, left hand piston forms the second chamber with connecting between pedestal, connect between pedestal and right hand piston and form the 3rd chamber, between right hand piston and right side end cap, form the 4th chamber, wherein left-hand end covers and is provided with the first passage that is communicated with external pipe and the first chamber, connect pedestal bottom and be provided with the second channel that is communicated with the second chamber and external pipe, connect pedestal top and be provided with the third channel that is communicated with external pipe and the 3rd chamber, right-hand end covers and is provided with the four-way that is communicated with the 4th chamber and external pipe.
The passage that described left side end cap is communicated with the first chamber is at least provided with one, and the passage that right-hand end covers connection the 4th chamber is at least provided with one article, and the passage that is communicated with the second chamber on connection pedestal is at least provided with one, and the passage that is communicated with the 3rd chamber is at least provided with one article.On each end cap, be provided with a passage, connect on pedestal and be provided with two passes; But also can realize identical function by multichannel is set.On each end cap, a passage is connected with two one-way valves; But also can be connected with every one-way valve by two or more pieces passage.
Described reverse osmosis seawater desalination system comprises seawater pond a, external sea water pump, one-way valve a, one-way valve b, one-way valve c, one-way valve d, reverse osmosis membrane assembly, fresh-water pool and external magnetic control gear, described seawater pond connects external sea water pump, the water outlet of described external sea water pump is divided into two-way by pipeline, wherein a road connects one-way valve a successively, after one-way valve b, connect reverse osmosis membrane assembly, another road connects successively one-way valve d and is connected reverse osmosis membrane assembly with after one-way valve c, reverse osmosis membrane assembly connects fresh-water pool b, wherein, one-way valve a, pipeline between one-way valve b is provided with the arm that is communicated with first passage, between one-way valve c and one-way valve d, be provided with the arm that is communicated with four-way, reverse osmosis membrane assembly connects respectively second channel and third channel by external magnetic control gear.
Described external magnetic control gear comprises microprocessor unit, two-position four-way valve, magnetic inductor a and magnetic inductor b, described microprocessor unit connects respectively two-position four-way valve, magnetic inductor a and magnetic inductor b, described two-position four-way valve connects respectively reverse osmosis membrane assembly, second channel, third channel and seawater pond b, and described magnetic inductor a and magnetic inductor b respond to respectively the piston position signal of the magnet ring output being arranged on piston.
Described two-position four-way valve adopts three-position four-way valve or two two-position three-way valves that can realize identical function to replace; Be the material of seawater corrosion resistance with contact with sea water material that part is used, except magnet ring, all the other materials are without remanent magnetism material.Water in described seawater pond (13) is seawater or brackish water or the high water of other salinity.
The signal that described reverse osmosis seawater desalination system can send by magnetic inductor a and magnetic inductor b, calculates turn around time; And by each cavity volume divided by turn around time, calculate respectively charging seawater flow, discharge the poor of seawater flow and both, produce water flow.
The material that uses is the material of seawater corrosion resistance, and except magnet ring, all the other materials are without remanent magnetism material.
Said apparatus not only can be for reverse osmosis seawater desalination system, also can be in brackish water desalination and high other water treatment systems of salt content.
In order to reach the object of above-mentioned simplified structure, the present invention utilizes magnetic signal to carry out the control of differential pressure type energy recovery pump, and internal control function is converted to outside, thereby energy recovery pump structure is simplified most.In the time that piston moves to limit on the left position left, external magnetic control gear senses the magnetic signal that left magnet ring sends, the right commutation control logic program in flip flop equipment, and piston moves right after commutating; And in the time that piston moves right to limit on the right-right-hand limit position, external magnetic control gear senses the magnetic signal that right magnet ring sends, the left commutation control logic program in flip flop equipment, realizes the piston backward left movement that commutates; Thereby realize shuttling movement.Obviously in body structure of the present invention, there is not fluid control elements, thereby structure is simplified greatly.
For reaching the object that maintenance is good, between the left and right cylinder barrel of the present invention and left and right end cap, left and right cylinder barrel with connect between pedestal, piston rod all adopts seal ring sealing with connecting between pedestal; Between left and right piston and piston rod, adopt and be threaded, adopt nut to fix; Left and right end cap and connection pedestal are provided with the mounting hole of installing for pull bar, and pull bar passes rear employing bolton from hole.All elements like this are all highly susceptible to dismounting, for ease of maintenaince.
Compared with prior art, the present invention is simple in structure, for ease of maintenaince, and therefore cost of the present invention is lower.Simultaneously because reverse osmosis seawater desalination system provided by the invention is to utilize the pressure energy of low pressure seawater and the pressure energy of high-pressure thick salt solution to come together to order about piston movement with magnet controlled energy recovery pump, make the pressure of raw material seawater can directly be promoted to reverse osmosis membrane entrance operation pressure, therefore when this energy recovery pump is for reverse osmosis seawater desalination system, only need be equipped with a raw material seawater raw water service pump with low delivery pressure drives, without suction booster and high-pressure service pump are set specially, therefore system cost is very low; And reverse osmosis seawater desalination system provided by the invention with the energy recovery rate of magnet controlled energy recovery pump up to more than 90%, so the energy consumption of system is lower, directly reduced user cost.In addition,, due to the signal that adopts reverse osmosis seawater desalination system of the present invention to send by magnetic inductor a and magnetic inductor b, calculate turn around time; And by each cavity volume divided by turn around time, calculate respectively charging seawater flow, discharge the poor of seawater flow and both, produce water flow, therefore can save the expense of three flowmeters of configuration and related accessories thereof.
Brief description of the drawings
Fig. 1 is a kind of magnet controlled energy recovery pump external structure schematic diagram for reverse osmosis seawater desalination system provided by the invention;
Fig. 2 is a kind of magnet controlled energy recovery pump internal structure sectional view for reverse osmosis seawater desalination system provided by the invention;
Fig. 3 is the reverse osmosis seawater desalination system schematic diagram that a kind of magnet controlled energy recovery pump for reverse osmosis seawater desalination system provided by the invention is installed.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figures 1 to 3, a kind of magnet controlled energy recovery pump for reverse osmosis seawater desalination system, comprise piston 1, piston rod 2, magnet ring 3, cylinder barrel 4, connect pedestal 5, end cap 6, pull bar 9, described connection pedestal 5 is arranged in the middle of cylinder barrel 4, cylinder barrel 4 is divided into left side cylinder barrel and right side cylinder barrel, described piston 1 comprises left hand piston and right hand piston, wherein left hand piston is placed in the cylinder barrel of left side, right hand piston is placed in the cylinder barrel of right side, described piston rod 2 two ends connect respectively left hand piston and right hand piston through connecting pedestal 5, on left hand piston and right hand piston, be equipped with magnet ring 3, be that left magnet ring is set on left hand piston, right magnet ring is set on right hand piston, described end cap 6 is sealedly connected on cylinder barrel 4 two ends, described end cap 6 comprises left side end cap and right side end cap, left side end cap is connected to cylinder barrel 4 left ends, right side end cap is connected to cylinder barrel 4 right sides, all seal by seal ring, between described cylinder barrel 4 and end cap 6, seal by seal ring 12, between piston 1 and cylinder barrel 4, seal by seal ring 11, cylinder barrel 4 seals by seal ring 10 with connecting between pedestal 5, between described piston 1 and piston rod 2, pass through bolton, described end cap 6, on connection pedestal 5, be provided with the mounting hole of installing for pull bar 9, pull bar 9 passes rear employing fastening nuts from mounting hole, by pull bar 9 by cylinder barrel 4, connect pedestal 5, end cap 6 is fastenedly connected, described piston 1, connect pedestal 5 and end cap 6 cylinder barrel 4 is divided into four sealed chamber: between left side end cap and left hand piston, form the first chamber, left hand piston forms the second chamber with connecting between pedestal 5, connect between pedestal 5 and right hand piston and form the 3rd chamber, between right hand piston and right side end cap, form the 4th chamber, wherein left-hand end covers and is provided with the first passage 27 that is communicated with external pipe and the first chamber, connect pedestal 5 bottoms and be provided with the second channel 28 that is communicated with the second chamber and external pipe, connect pedestal 5 tops and be provided with the third channel 29 that is communicated with external pipe and the 3rd chamber, right-hand end covers and is provided with the four-way 30 that is communicated with the 4th chamber and external pipe.
Described reverse osmosis seawater desalination system comprises seawater pond a13, external sea water pump 14, one-way valve a15, one-way valve b16, one-way valve c17, one-way valve d18, reverse osmosis membrane assembly 19, fresh-water pool 21 and external magnetic control gear 24, described seawater pond 13 connects external sea water pump 14, the water outlet of described external sea water pump 14 is divided into two-way by pipeline, wherein a road connects one-way valve a15 successively, after one-way valve b16, connect reverse osmosis membrane assembly 19, another road connects successively one-way valve d18 and is connected reverse osmosis membrane assembly 19 with after one-way valve c17, reverse osmosis membrane assembly 19 connects fresh-water pool b21, wherein, one-way valve a15, pipeline between one-way valve b16 is provided with the arm that is communicated with first passage, between one-way valve c17 and one-way valve d18, be provided with the arm that is communicated with four-way, reverse osmosis membrane assembly 19 connects respectively second channel and third channel by external magnetic control gear 24, described external magnetic control gear 24 comprises microprocessor unit 26, two-position four-way valve 25, magnetic inductor a22 and magnetic inductor b23, described microprocessor unit 26 connects respectively two-position four-way valve 25, magnetic inductor a22 and magnetic inductor b23, described two-position four-way valve 25 connects respectively reverse osmosis membrane assembly 19, second channel, third channel and seawater pond b20, described magnetic inductor a22 and magnetic inductor b23 respond to respectively the piston position signal of the magnet ring output being arranged on piston, except magnet ring, all the other materials are without remanent magnetism material.
As shown in Figure 3, a kind of magnet controlled energy recovery pump for reverse osmosis seawater desalination system provided by the invention comprises by outside one-way valve and is connected in the water intake of low pressure raw water inlet, is connected in the drain opening of seawater desalination system drain opening, is connected in the recovery mouth of pressure vessel for reverse osmosis high-pressure thick water waterexit end and is connected in the boost port of reverse osmosis membrane feed-water end by outside one-way valve by external magnetic control gear by external magnetic control gear.Piston is during to left movement, and it is water intake that right-hand end covers outside opening, and it is boost port that left-hand end covers outside opening, and connecting the top outside opening of pedestal is floss hole, connects pedestal outside opening on the lower for reclaiming mouthful; In the time that piston moves right, it is water intake that left-hand end covers outside opening, and it is boost port that right-hand end covers outside opening, and connecting pedestal outside opening is on the lower floss hole, connects the top outside opening of pedestal for reclaiming mouth.
Below the reverse osmosis seawater desalination system working procedure that the magnet controlled energy recovery pump of reverse osmosis seawater desalination system provided by the invention is installed is described:
In the time need to utilizing the reverse osmosis seawater desalination system shown in Fig. 3 to carry out desalination of sea water, first utilize sea water pump 14 by the raw material seawater in the a13 of seawater pond through one-way valve a15, be incorporated into by first passage 27 in the first chamber being connected with left side end cap, make it to become water-inlet cavity, raw material seawater, through one-way valve c18, is incorporated into by four-way 30 in the 4th chamber being connected with right side end cap, meanwhile, the high-pressure thick salt solution of being discharged by reverse osmosis membrane assembly 19 is entered in the 3rd chamber that connects pedestal 5 right sides by the third channel 29 that connects pedestal 5 tops through two-position four-way valve 25, makes it to become recovery chamber, jointly promoting piston 1 as power source by the high-pressure thick seawater in raw material seawater and recovery chamber in water-inlet cavity moves to the right, the low-press thick seawater connecting in pedestal 5 left side the second chambers is disposed in the b20 of concentrated seawater pond through second channel 28, two-position four-way valve 25, becomes discharge chamber, seawater in the 4th chamber being connected with right side end cap is pressurized to reverse osmosis membrane assembly 19 operation pressures, becomes booster cavity, high pressure sea water enters in reverse osmosis membrane assembly 19 by one-way valve d17, and a part of seawater becomes fresh water by reverse osmosis membrane assembly 19 and drains in fresh-water pool 21, and a part becomes high-pressure thick salt solution, flows back in pump through two-position four-way valve 25, recycles, in the time that right piston moves to limit position, external magnetic control gear 24 senses by magnetic sensor 23 magnetic signal that right magnet ring sends, left commutation control logic program in flip flop equipment, it is controlled two-position four-way valve 25 and carries out switch operation, after this piston reverses direction motion, in the time that left piston moves to limit position, external magnetic control gear 24 senses by Magnetic Induction device 22 magnetic signal that left magnet ring sends, right commutation control logic program in flip flop equipment, it is controlled two-position four-way valve 25 and carries out switch operation, after this piston reverses direction motion, thereby realize shuttling movement, said process back and forth carries out realizing the pressure energy recovery of reverse osmosis seawater desalination system mesohigh brine, thereby reach the object that reduces reverse osmosis seawater desalting energy consumption.
Piston rod is listed to equilibrium of forces equation as follows:
P
water inlet× A
cylinder-P
discharge× (A
cylinder-A
axle)+P
reclaim× (A
cylinder-A
axle)-P
supercharging× A
cylinder=0
Know that according to reverse osmosis membrane characteristic P reclaims ≈ P supercharging, P releases ≈ 0bar (gauge pressure), approximate can drawing:
P
water inlet× A
cylinder=P
supercharging× A
axle
With at P
water inlet=10bar, A
cylinder/ A
axle=4 (if cylinder diameter is 100mm, the diameter of axle is 25mm) are example, P now
water inlet× A
cylinder=P
supercharging× A
axle=40bar.
Because its supercharging principle is to rely on to reclaim high-pressure thick seawater energy, therefore it has energy-conservation effect, and the efficiency of its recovered energy from high-pressure thick seawater is generally more than 90%.
Embodiment 2
Described left side magnet ring and right side magnet ring are arranged on respectively left hand piston or right hand piston end face, the passage that described left side end cap is communicated with the first chamber is provided with two, after two passes all connects one-way valve a15 or be connected to after one-way valve a15, one-way valve b16, the passage that described right side end cap is communicated with the 4th chamber is provided with two articles, after two passes all connects one-way valve d18 or be connected to after one-way valve d18 and one-way valve c17, the passage that is communicated with the second chamber on connection pedestal is provided with two, and the passage that is communicated with the 3rd chamber is provided with two articles.
All the other are with embodiment 1.
Embodiment 3
Described left side magnet ring is arranged on the piston rod that connects left hand piston, right side magnet ring is arranged on the piston rod that connects right hand piston, to survey the position of left hand piston and right hand piston, the passage that described left side end cap is communicated with the first chamber is provided with three, the passage that described right side end cap is communicated with the 4th chamber is provided with three articles, the passage that is communicated with the second chamber on connection pedestal is provided with three, and the passage that is communicated with the 3rd chamber is provided with three articles.All the other are with embodiment 1.
Said apparatus is for brackish water desalination processing.
Embodiment 4
Described magnet ring is magnetic patch shape.All the other are with embodiment 1.
Claims (10)
1. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system, it is characterized in that, comprise piston (1), piston rod (2), magnet ring (3), cylinder barrel (4), connect pedestal (5), end cap (6), pull bar (9), described connection pedestal (5) is arranged in the middle of cylinder barrel (4), cylinder barrel (4) is divided into left side cylinder barrel and right side cylinder barrel, described piston (1) comprises left hand piston and right hand piston, wherein left hand piston is placed in the cylinder barrel of left side, right hand piston is placed in the cylinder barrel of right side, described piston rod (2) two ends connect respectively left hand piston and right hand piston through connecting pedestal (5), described magnet ring (3) is arranged on piston (1) or piston rod (2), described end cap (6) is sealedly connected on cylinder barrel (4) two ends, described cylinder barrel (4), connect pedestal (5), end cap (6) is fastenedly connected by pull bar (9).
2. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 1, it is characterized in that, described end cap (6) comprises left side end cap and right side end cap, left side end cap is connected to cylinder barrel (4) left end, right side end cap is connected to cylinder barrel (4) right side, all seals by seal ring.
3. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 1, is characterized in that, described cylinder barrel (4) all seals by seal ring with connecting between pedestal (5) and piston (1).
4. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 1, it is characterized in that, between described piston (1) and piston rod (2), pass through bolton, described end cap (6), connect and on pedestal (5), be provided with the mounting hole of installing for pull bar (9), pull bar (9) from mounting hole through rear employing fastening nuts.
5. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 1, it is characterized in that, described magnet ring (3) comprises left side magnet ring and right side magnet ring, is arranged on respectively left hand piston or right hand piston bottom or end face, or is arranged on piston rod.
6. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 1, it is characterized in that, described piston (1), connect pedestal (5) and end cap (6) cylinder barrel (4) is divided into four sealed chamber: between left side end cap and left hand piston, form the first chamber, left hand piston forms the second chamber with connecting between pedestal (5), connect between pedestal (5) and right hand piston and form the 3rd chamber, between right hand piston and right side end cap, form the 4th chamber, wherein left-hand end covers and is provided with the first passage (27) that is communicated with external pipe and the first chamber, connect pedestal (5) bottom and be provided with the second channel (28) that is communicated with the second chamber and external pipe, connect pedestal (5) top and be provided with the third channel (29) that is communicated with external pipe and the 3rd chamber, right-hand end covers and is provided with the four-way (30) that is communicated with the 4th chamber and external pipe.
7. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 6, it is characterized in that, the passage that described left side end cap is communicated with the first chamber is at least provided with one, the passage that right-hand end covers connection the 4th chamber is at least provided with one article, connect the upper passage that is communicated with the second chamber of pedestal (5) and be at least provided with one, the passage that is communicated with the 3rd chamber is at least provided with one article.
8. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 6, it is characterized in that, described reverse osmosis seawater desalination system comprises seawater pond a (13), external sea water pump (14), one-way valve a (15), one-way valve b (16), one-way valve c (17), one-way valve d (18), reverse osmosis membrane assembly (19), fresh-water pool (21) and external magnetic control gear (24);
Described seawater pond (13) connects external sea water pump (14), the water outlet of described external sea water pump (14) is divided into two-way by pipeline, wherein a road connects one-way valve a (15) successively, after one-way valve b (16), connect reverse osmosis membrane assembly (19), another road connects successively one-way valve d (18) and after one-way valve c (17), is connected reverse osmosis membrane assembly (19), reverse osmosis membrane assembly (19) connects fresh-water pool b (21), wherein, one-way valve a (15), pipeline between one-way valve b (16) is provided with the arm that is communicated with first passage (27), between one-way valve c (17) and one-way valve d (18), be provided with the arm that is communicated with four-way (30), reverse osmosis membrane assembly (19) connects respectively second channel (28) and third channel (29) by external magnetic control gear (24).
9. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 8, it is characterized in that, described external magnetic control gear (24) comprises microprocessor unit (26), two-position four-way valve (25), magnetic inductor a (22) and magnetic inductor b (23), described microprocessor unit (26) connects respectively two-position four-way valve (25), magnetic inductor a (22) and magnetic inductor b (23), described two-position four-way valve (25) connects respectively reverse osmosis membrane assembly (19), second channel, third channel and seawater pond b (20), described magnetic inductor a (22) and magnetic inductor b (23) respond to respectively the piston position signal of the magnet ring output being arranged on piston.
10. the magnet controlled energy recovery pump for reverse osmosis seawater desalination system according to claim 9, is characterized in that, described two-position four-way valve (25) adopts three-position four-way valve or two two-position three-way valves to replace; Be the material of seawater corrosion resistance with contact with sea water material that part is used, except magnet ring, all the other materials are without remanent magnetism material; Water in described seawater pond (13) is seawater or brackish water or the high water of other salinity.
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| CN201310161492.8A CN104131956A (en) | 2013-05-03 | 2013-05-03 | Magnetic control type energy recovery pump for reverse osmosis seawater desalination system |
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| CN201310161492.8A CN104131956A (en) | 2013-05-03 | 2013-05-03 | Magnetic control type energy recovery pump for reverse osmosis seawater desalination system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106369015A (en) * | 2016-09-07 | 2017-02-01 | 上海空间推进研究所 | Pressure difference type energy recycling pump |
| CN106745518A (en) * | 2016-12-14 | 2017-05-31 | 华中科技大学 | A kind of two-pass sea water desalinating unit based on the infiltration of pressure retardation and counter-infiltration |
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| CN116272373B (en) * | 2023-04-06 | 2023-09-15 | 广东海洋大学 | Magnetic force driving type residual pressure energy recovery device and sea water desalination system thereof |
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