CN101581328A - United piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination system - Google Patents

United piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination system Download PDF

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Publication number
CN101581328A
CN101581328A CNA2009100690523A CN200910069052A CN101581328A CN 101581328 A CN101581328 A CN 101581328A CN A2009100690523 A CNA2009100690523 A CN A2009100690523A CN 200910069052 A CN200910069052 A CN 200910069052A CN 101581328 A CN101581328 A CN 101581328A
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CN
China
Prior art keywords
reverse osmosis
pressure
selector valve
energy recovery
oil hydraulic
Prior art date
Application number
CNA2009100690523A
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Chinese (zh)
Inventor
王世昌
Original Assignee
王世昌
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by 王世昌 filed Critical 王世昌
Priority to CNA2009100690523A priority Critical patent/CN101581328A/en
Publication of CN101581328A publication Critical patent/CN101581328A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • Y02A20/131Reverse-osmosis

Abstract

The invention relates to a united piston self-pressurization energy recovery pump used for a reverse osmosis seawater desalination system, comprising two hydraulic cylinders, a connecting piece, a high-pressure reversing valve, a low-pressure reversing valve, two sealing heads, a piston rod, two pistons, a plurality of bolts and nuts. The energy recovery pump provided by the invention utilizes the pressure energy of low-pressure seawater and the pressure energy of high-pressure concentrated brine together to drive the pistons to move, and directly rises the pressure of raw seawater to the inlet operating pressure of a reverse osmosis membrane device. As the energy recovery pump only needs to be matched with a raw seawater pump with middle and lower output press heads for driving when used for the reverse osmosis seawater desalination system and does not need the special arrangements of a booster pump and a high-pressure pump, therefore the energy consumption of the system and the investment of equipment are both very low. In addition, the energy recovery rate of the device is as high as more than 90%, and the equipment cost is low, so that the device is favorable to be popularized and used in middle-sized and small-sized reverse osmosis seawater desalination systems.

Description

Reverse osmosis seawater desalination system is with united piston self-pressurization energy recovery pump used

Technical field

The invention belongs in the saturating or brackish water impervious desalination system of seawater reverse osmosis pressure can recovery technology, particularly relates to a kind of reverse osmosis seawater desalination system with united piston self-pressurization energy recovery pump used.

Background technique

The reverse osmosis seawater desalting 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 (deciding) on the seawater salinity difference, make seawater after the pressurization flow to reverse osmosis membrane in the reverse osmosis membrane device then, the fresh water that wherein sees through reverse osmosis membrane becomes product water, and the brine that does not see through reverse osmosis membrane is then discharged from the upstream side of film.Since the brine that is discharged from still have very high pressure (near but be lower than aforesaid operations pressure), this pressure is called the brine overbottom pressure, if this part pressure can not be recycled, then the power consumption of desalination water per ton will be up to more than the 10kWh.

The equipment that reclaims brine overbottom pressure energy is called energy recycle device.Existing energy recycle device is the high-pressure thick salt solution that makes above-mentioned discharge by the recuperator a part of raw material seawater (flow is suitable with the high-pressure thick brine flow) of pressurizeing.But this part raw material seawater is after reclaiming the brine overbottom pressure, even the pressure in the high-pressure thick salt solution can pass to raw material seawater in 100% ground, its pressure still can not reach the reverse osmosis operation pressure, therefore need establish a suction booster again to promote the pressure of this part raw material seawater.

Therefore, in a typical reverse osmosis seawater desalination system, raw material seawater pressurizeed need to adopt two complete equipments: a cover is a high-pressure service pump, is used for part material seawater (suitable with fresh-water flow) directly is pressurized to the desired operation pressure of desalination by reverse osmosis; Another set of is suction booster, and that part of raw material seawater that is used for reclaiming overbottom pressure boosts to the reverse osmosis operation pressure.After converging, above-mentioned this two-part raw material seawater enters reverse osmosis membrane device again, to realize the desalination process.Because above-mentioned this existing reverse osmosis seawater desalination system needs two cover pressurized equipments, so not only investment is high, and the difficulty of operation and maintenance increases, therefore part small-scale desalination of sea water and a large amount of brackish water desalination systems all seldom or not adopt energy recycle device, cause huge energy consumption thus.

Summary of the invention

In order to address the above problem, the object of the invention is to provide a kind of reverse osmosis flow process of simplifying, and is reliable, efficient is high, and the reverse osmosis seawater desalination system of low cost of manufacture is with united piston self-pressurization energy recovery pump used.

In order to achieve the above object, reverse osmosis seawater desalination system provided by the invention is with united piston self-pressurization energy recovery pump used two oil hydraulic cylinders, link, high pressure selector valve, low pressure selector valve, two end sockets, piston rod, two pistons, a plurality of bolt and nuts of comprising; Wherein an end of two oil hydraulic cylinders is connected on two sides of link; The center of link connects vertically and is formed with a piston rod pilot hole, the outside of piston rod pilot hole connects vertically and is formed with a high pressure selector valve valve pocket and a low pressure selector valve valve pocket, and the external margin of link then radially is formed with two high pressure brine holes that are connected with high pressure selector valve valve pocket and low pressure selector valve valve pocket respectively and pressure release salt water hole; Two end sockets are separately positioned on the outer end of two oil hydraulic cylinders, and are formed with two liquid flow holes that are rectangular in shape and are communicated with the oil hydraulic cylinder inside and outside on each end socket; The external margin of two end sockets of a plurality of bolt-throughs and link and be arranged on the outside of two oil hydraulic cylinders, and two ends are fixed with nut; Piston rod runs through in the piston rod pilot hole that is arranged on the link; Two pistons with associating pressurization are connected to the two ends of piston rod, and external diameter the internal diameter with two oil hydraulic cylinders is identical respectively; High pressure selector valve and low pressure selector valve then are installed in the inside of high pressure selector valve valve pocket and low pressure selector valve valve pocket respectively, and are formed with the hole that can be connected with high pressure selector valve valve pocket and low pressure selector valve valve pocket respectively on it.

Described two oil hydraulic cylinders are isometrical isometric.

Described high pressure brine hole and pressure release salt water hole, high pressure selector valve valve pocket and low pressure selector valve valve pocket are oppositely arranged.

Liquid flow hole on described each end socket is oppositely arranged.

Joint between described end socket and oil hydraulic cylinder, oil hydraulic cylinder and link, link and piston rod, piston and oil hydraulic cylinder and piston and the piston rod is provided with seal arrangement.

Reverse osmosis seawater desalination system provided by the invention with united piston self-pressurization energy recovery pump used be utilize the low pressure seawater pressure can and the piston motion of coming together to order about of the pressure of high-pressure thick salt solution, direct boost in pressure to the reverse osmosis membrane device operation pressure that enters the mouth with raw material seawater.Because this energy recovery pump only need be equipped with a raw material seawater raw water service pump with low output pressure head and drive when being used for reverse osmosis seawater desalination system, need not suction booster and high-pressure service pump are set specially, so the energy consumption of system and equipment investment are all lower.In addition, the energy recovery rate of this device is up to more than 90%, and equipment cost is low, therefore is beneficial in middle-size and small-size reverse osmosis seawater desalination system and promotes the use of.

Description of drawings

Fig. 1 is a reverse osmosis seawater desalination system provided by the invention with united piston self-pressurization energy recovery pump used external structure schematic representation.

Fig. 2 is a reverse osmosis seawater desalination system provided by the invention with united piston self-pressurization energy recovery pump used longitudinal construction sectional view.

Fig. 3 is a reverse osmosis seawater desalination system provided by the invention with united piston self-pressurization energy recovery pump used mesohigh selector valve and low pressure selector valve position structure sectional view.

Fig. 4 is equipped with reverse osmosis seawater desalination system provided by the invention with united piston self-pressurization energy recovery pump used reverse osmosis seawater desalination system schematic representation.

Embodiment

Below in conjunction with the drawings and specific embodiments reverse osmosis seawater desalination system provided by the invention is elaborated with united piston self-pressurization energy recovery pump used.

As shown in Figure 1-Figure 3, reverse osmosis seawater desalination system provided by the invention comprises two oil hydraulic cylinders 2 with united piston self-pressurization energy recovery pump used, 4, link 3, high pressure selector valve 18, low pressure selector valve 16, two end sockets 1,5, piston rod 9, two pistons 8,10, a plurality of bolt 6 and nuts 7; Wherein an end of two oil hydraulic cylinders 2,4 is connected on two sides of link 3; The center of link 3 connects vertically and is formed with a piston rod pilot hole 3-1, the outside of piston rod pilot hole 3-1 connects vertically and is formed with a high pressure selector valve valve pocket 19 and a low pressure selector valve valve pocket 15, and the external margin of link 3 then radially is formed with two the high pressure brine hole 3-2 and the pressure release salt water hole 3-3 that are connected with high pressure commutation valve pocket 19 and low pressure selector valve valve pocket 15 respectively; Two end sockets 1,5 are separately positioned on the outer end of two oil hydraulic cylinders 2,4, and are formed with the liquid flow hole 1-1 of two oil hydraulic cylinder 2,4 inside and outsides that are rectangular in shape and are communicated with, 1-2,5-1,5-2 on each end socket 1,5; A plurality of bolts 6 run through the external margin of two end sockets 1,5 and link 3 and are arranged on the outside of two oil hydraulic cylinders 2,4, and two ends are fixing with nut 7; Piston rod 9 runs through in the piston rod pilot hole 3-1 that is arranged on the link 3; Two pistons 8,10 with associating pressurization are connected to the two ends of piston rod 9, and external diameter the internal diameter with two oil hydraulic cylinders 4,2 is identical respectively; High pressure selector valve 18 and low pressure selector valve 16 then are installed in the inside of high pressure selector valve valve pocket 19 and low pressure selector valve valve pocket 15 respectively, and are formed with the hole that can be connected with high pressure commutation valve pocket 19 and low pressure selector valve valve pocket 15 respectively on it.

Described two oil hydraulic cylinders 2,4 are isometrical isometric.

Described high pressure brine hole 3-2 and pressure release salt water hole 3-3, high pressure selector valve valve pocket 19 and low pressure selector valve valve pocket 15 are oppositely arranged.

Liquid flow hole 1-1 on the described end socket 1,1-2 is oppositely arranged.

Liquid flow hole 5-1 on the described end socket 5,5-2 is oppositely arranged.

Joint between described end socket 1,5 and oil hydraulic cylinder 2,4, oil hydraulic cylinder 2,4 and link 3, link 3 and piston rod 9, piston 8,10 and oil hydraulic cylinder 4,2 and piston 8,10 and the piston rod 9 is provided with seal arrangement.

Describe with united piston self-pressurization energy recovery pump used reverse osmosis seawater desalination system working procedure reverse osmosis seawater desalination system provided by the invention is installed below: when needs utilize reverse osmosis seawater desalination system shown in Figure 4 to carry out desalination of sea water, at first utilize sea water pump 21 with the raw material seawater in the seawater pond 20 by the road, one-way valve 22 and liquid flow hole 1-2 and be injected in the inner space (0.5MPa) of piston-rodless 9 one sides in the oil hydraulic cylinder 2.Meanwhile, the high-pressure thick salt solution of discharging by reverse osmosis membrane device 27 will be by the road 28, high pressure brine hole 3-2 and high pressure selector valve 18 and enter in the inner space that piston rod 9 one sides are arranged in the oil hydraulic cylinder 4.The raw material seawater (0.5MPa) in the piston-rodless 9 one side spaces promotes the motion to the right in oil hydraulic cylinder 4,2 of above-mentioned piston 8,10 jointly in high-pressure thick salt solution (5.8MPa) in the piston rod 9 one side spaces and the oil hydraulic cylinder 2 as power source by having in the oil hydraulic cylinder 4.Seawater pressure in the 9 one side spaces of piston-rodless in the oil hydraulic cylinder 4 (just being 0.5MPa) is at above-mentioned piston 8, become the high pressure charging seawater that is pressurized after rising to 6.0MPa under 10 the synergy, this high pressure charging seawater will be via liquid flow hole 5-1, one-way valve 24 and pipeline 26 and enter into reverse osmosis membrane device 27, fresh water after the reverse osmosis membrane desalination 29 exports fresh-water pool 31 to by the road, the high-pressure thick salt solution of being discharged by reverse osmosis membrane device 27 is then via pipeline 28, enter in the inner space that piston rod 9 one sides are arranged in the oil hydraulic cylinder 4 behind high pressure brine hole 3-2 and the high pressure selector valve 18, as drive power source piston 8,10 move to right-hand member in oil hydraulic cylinder 4,2; There is the low-press thick salt solution in the piston rod 9 one side spaces under the exerting pressure of piston 10, will enter (≈ 0MPa) in the brine pond 32 in the oil hydraulic cylinder 2 via low pressure selector valve 16, pressure release salt water hole 3-3 and pipeline 30.When the right flank of piston 10 touched the left surface of link 3, it will promote high pressure selector valve 18 and low pressure selector valve 16 carries out switch operation simultaneously, these back piston 8,10 reversing motions.Said process carries out back and forth realizing that the overbottom pressure with reverse osmosis seawater desalination system mesohigh brine can reclaim, thereby reaches the purpose that reduces the reverse osmosis seawater desalting energy consumption.

Claims (6)

1, a kind of reverse osmosis seawater desalination system is with united piston self-pressurization energy recovery pump used, it is characterized in that: described reverse osmosis seawater desalination system comprises two oil hydraulic cylinders (2 with united piston self-pressurization energy recovery pump used, 4), link (3), high pressure selector valve (18), low pressure selector valve (16), two end sockets (1,5), piston rod (9), two pistons (8,10), a plurality of bolt (6) and nut (7); Wherein an end of two oil hydraulic cylinders (2,4) is connected on two sides of link (3); The center of link (3) connects vertically and is formed with a piston rod pilot hole (3-1), the outside of piston rod pilot hole (3-1) connects vertically and is formed with a high pressure selector valve valve pocket (19) and a low pressure selector valve valve pocket (15), and the external margin of link (3) then radially is formed with two high pressure brine holes (3-2) that are connected with high pressure selector valve valve pocket (19) and low pressure selector valve valve pocket (15) respectively and pressure release salt water hole (3-3); Two end sockets (1,5) are separately positioned on the outer end of two oil hydraulic cylinders (2,4), and be formed with on each end socket (1,5) two oil hydraulic cylinder (2,4) inside and outsides that are rectangular in shape and are communicated with liquid flow hole (1-1,1-2,5-1,5-2); A plurality of bolts (6) run through the external margin of two end sockets (1,5) and link (3) and are arranged on the outside of two oil hydraulic cylinders (2,4), and two ends are fixing with nuts (7); Piston rod (9) runs through in the piston rod pilot hole (3-1) that is arranged on the link (3); Two pistons (8,10) with associating pressurization are connected to the two ends of piston rod (9), and external diameter the internal diameter with two oil hydraulic cylinders (4,2) is identical respectively; High pressure selector valve (18) and low pressure selector valve (16) then are installed in the inside of high pressure selector valve valve pocket (19) and low pressure selector valve valve pocket (15) respectively, and are formed with the hole that can be connected with high pressure selector valve valve pocket (19) and low pressure selector valve valve pocket (15) respectively on it.
2, reverse osmosis seawater desalination system according to claim 1 is characterized in that with united piston self-pressurization energy recovery pump used: described two oil hydraulic cylinders (2,4) are isometrical isometric.
3, reverse osmosis seawater desalination system according to claim 1 is characterized in that with united piston self-pressurization energy recovery pump used: described high pressure brine hole (3-2) and pressure release salt water hole (3-3), high pressure commutation valve pocket (19) and low pressure selector valve valve pocket (15) are oppositely arranged.
4, reverse osmosis seawater desalination system according to claim 1 is characterized in that with united piston self-pressurization energy recovery pump used: (1-1 1-2) is oppositely arranged the liquid flow hole on the described end socket (1).
5, reverse osmosis seawater desalination system according to claim 1 is characterized in that with united piston self-pressurization energy recovery pump used: (5-1 5-2) is oppositely arranged the liquid flow hole on the described end socket (5).
6, reverse osmosis seawater desalination system according to claim 1 is with united piston self-pressurization energy recovery pump used, it is characterized in that: described end socket (1,5) and oil hydraulic cylinder (2,4), oil hydraulic cylinder (2,4) and link (3), link (3) and piston rod (9), piston (8,10) and the joint between oil hydraulic cylinder (4,2) and piston (8,10) and the piston rod (9) be provided with seal arrangement.
CNA2009100690523A 2009-05-31 2009-05-31 United piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination system CN101581328A (en)

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102330648A (en) * 2011-09-28 2012-01-25 深圳市莱德士科技有限公司 Boosting pump and reverse osmosis system using same
CN102351277A (en) * 2011-09-13 2012-02-15 天津大学 Axially-sealed fluid pressure switcher with reciprocating sliders
CN102588240A (en) * 2012-02-20 2012-07-18 国家海洋局天津海水淡化与综合利用研究所 Self-pressurization energy recovery high-pressure pump for reverse osmosis sea water desalinization
CN102815766A (en) * 2012-09-03 2012-12-12 北京工业大学 Liquid pressure energy recovery device based on full rotation valves
WO2014019272A1 (en) * 2012-07-31 2014-02-06 Zhu Ronghui Membrane seawater desalination pressurization and energy recovery integrated method and device
CN103663581A (en) * 2013-12-31 2014-03-26 常州鼎豪精机有限公司 Cylinder body combined structure of efficient type seawater desalting device
CN104098158A (en) * 2014-07-02 2014-10-15 华中科技大学 Sea water desalination device based on pressure retardation osmosis and reverse osmosis and method thereof
CN105073230A (en) * 2013-03-11 2015-11-18 株式会社荏原制作所 Seawater desalination system and energy recovery apparatus
CN105712438A (en) * 2016-02-02 2016-06-29 北京工业大学 Pressure energy recovering method based on rotary self-sealing liquid switchers
CN108757377A (en) * 2018-07-06 2018-11-06 龙口利佳电气有限公司 A kind of water purifier booster pump and supercharging water supply system and boosting method
WO2019024070A1 (en) * 2017-08-04 2019-02-07 南京非并网新能源科技有限公司 System for efficient seawater desalination utilizing new-energy
CN110486347A (en) * 2019-08-21 2019-11-22 自然资源部天津海水淡化与综合利用研究所 Combined water force control valve

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102351277A (en) * 2011-09-13 2012-02-15 天津大学 Axially-sealed fluid pressure switcher with reciprocating sliders
CN102351277B (en) * 2011-09-13 2013-01-09 天津大学 Axially-sealed fluid pressure switcher with reciprocating sliders
CN102330648A (en) * 2011-09-28 2012-01-25 深圳市莱德士科技有限公司 Boosting pump and reverse osmosis system using same
CN102330648B (en) * 2011-09-28 2014-10-22 深圳市莱德士科技有限公司 Boosting pump and reverse osmosis system using same
WO2013044529A1 (en) * 2011-09-28 2013-04-04 深圳市莱德士科技有限公司 Booster pump and reverse osmosis system applying same
CN102588240A (en) * 2012-02-20 2012-07-18 国家海洋局天津海水淡化与综合利用研究所 Self-pressurization energy recovery high-pressure pump for reverse osmosis sea water desalinization
CN102588240B (en) * 2012-02-20 2014-10-01 国家海洋局天津海水淡化与综合利用研究所 Self-pressurization energy recovery high-pressure pump for reverse osmosis sea water desalinization
US9597638B2 (en) 2012-07-31 2017-03-21 Ronghui Zhu Membrane seawater desalination pressurization and energy recovery integrated method and device
WO2014019272A1 (en) * 2012-07-31 2014-02-06 Zhu Ronghui Membrane seawater desalination pressurization and energy recovery integrated method and device
CN102815766A (en) * 2012-09-03 2012-12-12 北京工业大学 Liquid pressure energy recovery device based on full rotation valves
CN105073230A (en) * 2013-03-11 2015-11-18 株式会社荏原制作所 Seawater desalination system and energy recovery apparatus
CN103663581A (en) * 2013-12-31 2014-03-26 常州鼎豪精机有限公司 Cylinder body combined structure of efficient type seawater desalting device
CN104098158B (en) * 2014-07-02 2016-04-13 华中科技大学 A kind of sea water desalinating plant based on the infiltration and counter-infiltration of pressure retardation and method thereof
CN104098158A (en) * 2014-07-02 2014-10-15 华中科技大学 Sea water desalination device based on pressure retardation osmosis and reverse osmosis and method thereof
CN105712438A (en) * 2016-02-02 2016-06-29 北京工业大学 Pressure energy recovering method based on rotary self-sealing liquid switchers
CN105712438B (en) * 2016-02-02 2018-02-09 北京工业大学 Pressure energy recovery method based on rotation self sealss liquid switch
WO2019024070A1 (en) * 2017-08-04 2019-02-07 南京非并网新能源科技有限公司 System for efficient seawater desalination utilizing new-energy
CN108757377A (en) * 2018-07-06 2018-11-06 龙口利佳电气有限公司 A kind of water purifier booster pump and supercharging water supply system and boosting method
CN110486347A (en) * 2019-08-21 2019-11-22 自然资源部天津海水淡化与综合利用研究所 Combined water force control valve

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