CN1721048A - Strong brine energy recovery device based on reverse osmosis desalination technology - Google Patents

Strong brine energy recovery device based on reverse osmosis desalination technology Download PDF

Info

Publication number
CN1721048A
CN1721048A CNA2005100353288A CN200510035328A CN1721048A CN 1721048 A CN1721048 A CN 1721048A CN A2005100353288 A CNA2005100353288 A CN A2005100353288A CN 200510035328 A CN200510035328 A CN 200510035328A CN 1721048 A CN1721048 A CN 1721048A
Authority
CN
China
Prior art keywords
reverse osmosis
strong brine
magnetic valve
piston
guide rod
Prior art date
Application number
CNA2005100353288A
Other languages
Chinese (zh)
Other versions
CN100341609C (en
Inventor
马玉久
游亚戈
郑永红
张峰
Original Assignee
中国科学院广州能源研究所
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.)
Filing date
Publication date
Application filed by 中国科学院广州能源研究所 filed Critical 中国科学院广州能源研究所
Priority to CNB2005100353288A priority Critical patent/CN100341609C/en
Publication of CN1721048A publication Critical patent/CN1721048A/en
Application granted granted Critical
Publication of CN100341609C publication Critical patent/CN100341609C/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/06Energy recovery
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D61/00Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis, ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/12Controlling or regulating
    • 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

This invention discloses energy-recovery device for strong brine based on desalination technique by reverse osmosis, which comprises hydraulic cylinder with guide bar connected to piston; water inlet three-way solenoid valve with one end connected to end of guide bar, and other two ends connected separately to water outlets of low and high pressure water-feed pumps; drainage three-way solenoid valve with one end connected to the hydraulic cylinder end far away guide bar, and other two ends connected to strong brine discharge pipes of reverse osmosis membrane; sensor, to obtain the position signal of piston; controller, to control the synchronized open and shut of two aforementioned three-way solenoid valves. It has high efficiency, runs stably, switches quickly and fit to spread in industry.

Description

Strong brine energy recovery device based on reverse osmosis desalination technology

Technical field

The present invention relates to a kind of strong brine energy recovery device based on reverse osmosis desalination technology.

Background technology

Impervious desalination system need constantly be discharged the strong brine of high pressure in producing the fresh water process.The pressure of this part strong brine can be about 70% of desalination by reverse osmosis device mesohigh feed pump input energy, and its recovery can be saved power consumption.China ZL01130627 discloses a kind of valve controlled residual pressure recovering equipment for impervious desalination system, this apparatus structure is simple, but have weak point: the movement position of sliding plunger can't perception, cause the action of computer controller control magnetic valve not keep corresponding relation, therefore can not reach very high control accuracy with the movement position of sliding plunger; Though the overbottom pressure organic efficiency of this device improves in addition, but still is not very desirable.In addition, current strong brine energy recovery device ubiquity cost of manufacture height, the phenomenon that organic efficiency is low.

Summary of the invention

Main purpose of the present invention is to overcome the deficiencies in the prior art, and a kind of organic efficiency height, stable, switch speed is fast and organic efficiency the is high strong brine energy recovery device based on reverse osmosis desalination technology are provided.

This purpose of the present invention is achieved by the following technical solution: a kind of strong brine energy recovery device based on reverse osmosis desalination technology, and this energy recycle device comprises energy exchanger, and this energy exchanger comprises as lower member:

Guide rod;

Piston;

Hydraulic cylinder is equipped with piston in the described hydraulic cylinder, the fixedly connected guide rod of described piston;

The water inlet three-way magnetic valve, described water inlet three-way magnetic valve one end connects the end that described hydraulic cylinder is installed guide rod, and two ports link to each other with the delivery port of low pressure feed water pump and high pressure water pump respectively in addition;

Water draining tee magnetic valve, described water draining tee magnetic valve one end connect the end of hydraulic cylinder away from guide rod, and two ports link to each other with the strong brine discharge conduit with the strong brine outlet conduit of reverse osmosis membrane respectively in addition;

Described water inlet three-way magnetic valve and water outlet three-way magnetic valve can replace with other element of realizing identical function.

Described energy recycle device also comprises:

Sensor, described sensor can obtain described position of piston signal;

Controller, described controller are controlled the synchronous switching of water inlet three-way magnetic valve and water draining tee magnetic valve according to the position signalling of the guide rod of sensor feedback.

Described energy exchanger is a plurality of, makes that reverse osmosis membrane is intake incessantly, draining.

Described controller is Electromagnetic Control cabinet or computer, also can use other element of realizing identical function to replace.

Operation principle of the present invention is (with reference to figure 1): piston is separated into left and right sides two parts with hydraulic cylinder, left end is full of raw material salt solution, right-hand member is full of strong brine, when the low order end of piston arrives hydraulic cylinder, sensor is given controller the position of piston signal, controller control water inlet three-way magnetic valve, the water draining tee magnetic valve is simultaneously from AC, the XZ connection switches to CB, YX is communicated with, this moment, the piston two ends existed thrust poor, promote piston to left movement, the strong brine of reverse osmosis membrane generation at this moment injects the hydraulic cylinder right-hand member through the strong brine outlet, and the raw material salt solution in the hydraulic cylinder left end is pressed into reverse osmosis membrane; When the high order end of piston arrives hydraulic cylinder, sensor is given controller the position of piston signal, controller control water inlet triple valve magnetic valve, water draining tee magnetic valve switch to AC, XZ from CB, YX connection simultaneously and are communicated with, raw material salt solution injects the hydraulic cylinder left end through mouth of pipe A, C, piston slides to the right, makes that the strong brine in the hydraulic cylinder right-hand member is discharged from through mouth of pipe X, Z.Above process has been finished the renewal of raw material salt solution in the reverse osmosis membrane, has utilized the energy of strong brine simultaneously.So repeatedly, can realize the high efficiente callback of strong brine energy.

The present invention has used guide rod, is exactly the thrust of utilizing the cross-sectional area generation of guide rod on the principle, realizes that energy reclaims thereby promote the piston motion.Sensor not necessarily will have actual contact with guide rod.Main purpose is in order to obtain the position of piston signal, thereby sends to controller.Sensor is near guide rod among Fig. 1, and just an illustrated position as long as can obtain the position of piston signal, is placed on passable everywhere.Controller not necessarily links to each other with three-way magnetic valve.As long as controller can be controlled them and open synchronously.Such as, being similar to the remote controller of television set, controller and three-way magnetic valve do not have connecting line physically, but can control by electromagnetic wave signal.Dash-dot arrows among Fig. 1 is represented control signal.

Strong brine energy recovery device of the present invention compared with prior art has following remarkable advantage: (1) is stable, and opens and closes by controller control three-way magnetic valve the time, guarantees its conversion synchronization, and switch speed is fast and control accuracy is high; (2) adopt the guide rod of fixedlying connected in this energy recycle device with piston, there is pressure differential in the piston two ends, promote the motion of piston, controller is controlled the synchronous switching of two three-way magnetic valves by the position signalling of the guide rod of sensor feedback, control accuracy height not only, and make the startup of control program and the position relation of guide rod be consistent, and can adjust accordingly, keep switch speed faster; (3) in the past in the energy recycle device, the compression pump that often needs to use more than 3 or 3 for normal operation (comprises low pressure feed water pump, high pressure water pump, booster pump etc., the proportion maximum that accounts for of the power consumption of booster pump wherein), marrow of the present invention is ingeniously to utilize pressure differential that the piston both sides exist as additional power, needn't adopt necessary in the past booster pump, thereby save the energy consumption of whole energy recycle device; (4) organic efficiency height of the present invention, its organic efficiency can reach more than 95%.

Description of drawings

Below in conjunction with accompanying drawing and technology embodiment the present invention is described in further detail.

Part is a structural representation of the present invention in the double dot dash line frame of Fig. 1, and wherein control signal is represented with chain-dotted line;

Fig. 2 is the state diagram that piston is in general position among Fig. 1;

Fig. 3 is the state diagram that piston is in low order end among Fig. 1;

Fig. 4 is the state diagram that piston is in high order end among Fig. 1.

Description of reference numerals

1 raw material salt solution; 2 low pressure feed water pumps; 3 filters; 4 high pressure water pumps

5 reverse osmosis membranes; 51 reverse osmosis membrane water inlets; 52 water outlets; The outlet of 53 strong brines

6 water inlet three-way magnetic valves; 7 hydraulic cylinders; 8 guide rods; 9 controllers

10 sensors; 11 pistons; 12 water draining tee magnetic valves

The specific embodiment

As shown in Figure 1, the low pressure feed water pump 2 of Xiang Lianing, filter 3, high pressure water pump 4, reverse osmosis membrane 5 are formed the desalination by reverse osmosis device successively, and strong brine energy recovery device is based upon on the basis of this reverse osmosis unit, and this energy recycle device comprises as lower member:

Guide rod 8;

Piston 11;

Hydraulic cylinder 7 is equipped with piston 11 in the described hydraulic cylinder 7, described piston 11 fixedly connected guide rods 8;

Water inlet three-way magnetic valve 6, described water inlet three-way magnetic valve 6 one ends connect the end that described hydraulic cylinder 7 is installed guide rod 8, and two ports link to each other with the delivery port of low pressure feed water pump 2 with high pressure water pump 4 respectively in addition;

Water draining tee magnetic valve 12, described water draining tee magnetic valve 12 1 ends connect the end of hydraulic cylinder 7 away from guide rod 8, and two ports link to each other with the strong brine discharge conduit with the strong brine outlet conduit of reverse osmosis membrane 5 respectively in addition.What the Y mouth of water draining tee magnetic valve 12 connect is the strong brine outlet conduit, and what the Z mouth connect is the strong brine bleeder pipe;

Sensor 10, described sensor 10 can obtain the position signalling of described piston 11, and sensor 10 does not contact with guide rod 8 itself, as long as can obtain the signal of piston 11, can be placed on the optional position;

Certainly sensor 10 also can have actual contacting with guide rod 8, can obtain the signal of piston 11 equally.

Controller 9, described controller 9 are controlled the synchronous switching of water inlet three-way magnetic valve 6 and water draining tee magnetic valve 12 according to the position signalling of the guide rod 8 of sensor 10 feedbacks.

Same, controller 9 not necessarily links to each other with water draining tee magnetic valve 12 with water inlet three-way magnetic valve 6.As long as controller 9 can be controlled them and open synchronously.Such as, be similar to the remote controller of television set.Controller 9 and water inlet three-way magnetic valve 6 and water draining tee magnetic valve 12 do not have connecting line physically, but can control by electromagnetic wave signal.

Above-mentioned guide rod 8, piston 11, hydraulic cylinder 7, water inlet three-way magnetic valve 6 and water draining tee magnetic valve 12 constitute an energy exchanger, can adopt a plurality of energy exchanger parallel connections, make that reverse osmosis membrane is ceaselessly intake, draining.

Above-mentioned water inlet three-way magnetic valve 6 and water outlet three-way magnetic valve 12 can replace with other element of realizing identical function.

Controller 9 is Electromagnetic Control cabinet or computer or other control element.

As shown in Figure 1, piston 11 is separated into V with hydraulic cylinder 7 1, V 2Two parts, V 1Be full of raw material salt solution 1, it has done preliminary treatment, V to filter 3 to raw material salt solution 1 2Be full of strong brine;

If reverse osmosis membrane 5 contains reverse osmosis membrane water inlet 51, water outlet 52, strong brine outlet 53, the pressure of reverse osmosis membrane water inlet 51 is P 51, the pressure of strong brine outlet 53 is P 53(in the following description, the alphabetical P of subscripting refers among the figure pressure in subscript indication part), when piston 11 arrives the low order end of hydraulic cylinder 7 (shown in Figure 3), sensor 10 is given controller 9 position signalling of piston 11, and controller 9 control water inlet three-way magnetic valves 6, water draining tee magnetic valve 12 switch to CB, YX from AC, XZ connection simultaneously and be communicated with; During reverse osmosis membrane 5 work, P V2Be not more than P V1The cross-sectional area of guide rod 8 is S, and piston 11 left side lifting surface areas are A 1, the right side lifting surface area is A, i.e. A=A 1+ S, the stressed F in piston 11 left sides V1=P V1A 1, the stressed F in right side V2=P V2There is thrust difference F (F=F in A V2-F V1).Design S makes thrust difference F overcome the friction of piston 11 and guide rod 8 motions and fluid to flow and wait resistance that promotion piston 11 is stably to left movement; The strong brine that reverse osmosis membrane 5 produces injects V through strong brine outlet 53, Y, X 2, V 1Interior raw material salt solution is pressed into reverse osmosis membrane 5 through mouth of pipe C, B, 51; When piston 11 arrives the high order end of hydraulic cylinder 7 (shown in Figure 4), sensor 10 is given controller 9 position signalling of piston 11, controller 9 control water inlet triple valve magnetic valves 6, water draining tee magnetic valve 12 switch to AC, XZ from CB, YX connection simultaneously and are communicated with, and raw material salt solution injects V through mouth of pipe A, C 1, piston 11 slides to the right, makes V 2Interior strong brine is discharged from through mouth of pipe X, Z.Above process has been finished the renewal of raw material salt solution in the reverse osmosis membrane, has utilized the energy of strong brine simultaneously.So repeatedly, can realize the high efficiente callback of strong brine energy.

With guide rod 8, piston 11, hydraulic cylinder 7, water inlet three-way magnetic valve 6 and water draining tee magnetic valve 12 as an energy exchanger; The desalination by reverse osmosis device can a plurality of energy exchangers in parallel, thereby guarantee that reverse osmosis membrane 5 works incessantly, reach the purpose of steady production fresh water.

The energy recycle device that adopts 2 energy exchangers to form, hydraulic cylinder φ 150 * 2000mm, guide rod φ 20 * 2000mm, piston φ 150 * 200mm, the output hydraulic pressure 0.3~0.4MPa of low pressure feed water pump, the hydraulic pressure 5~5.5MPa of strong brine high-pressure side, the flow of the water inlet of counter-infiltration is 10 times of the product fresh-water flow, the movement velocity 150mm/s of piston, organic efficiency is 96%~97%.

Claims (7)

1, a kind of strong brine energy recovery device based on reverse osmosis desalination technology, it is characterized in that: described energy recycle device comprises energy exchanger, and this energy exchanger comprises as lower member:
Guide rod (8);
Piston (11);
Hydraulic cylinder (7) is equipped with piston (11) in the described hydraulic cylinder (7), the fixedly connected guide rod of described piston (11) (8);
Water inlet three-way magnetic valve (6), described water inlet three-way magnetic valve (6) one ends connect the end that described hydraulic cylinder (7) is installed guide rod (8), and two ports link to each other with the delivery port of low pressure feed water pump (2) with high pressure water pump (4) respectively in addition;
Water draining tee magnetic valve (12), described water draining tee magnetic valve (12) one ends connect the end of hydraulic cylinder (7) away from guide rod (8), and two ports link to each other with the strong brine discharge conduit with the strong brine outlet conduit of reverse osmosis membrane (5) respectively in addition;
Described energy recycle device also comprises:
Sensor (10), described sensor (10) can obtain the position signalling of described piston (11);
Controller (9), described controller (9) are controlled the synchronous switching of water inlet three-way magnetic valve (6) and water draining tee magnetic valve (12) according to the position signalling of the guide rod (8) of sensor (10) feedback.
2, a kind of strong brine energy recovery device based on reverse osmosis desalination technology according to claim 1, it is characterized in that: described energy exchanger is a plurality of, makes that reverse osmosis membrane is intake incessantly, draining.
3, a kind of strong brine energy recovery device based on reverse osmosis desalination technology according to claim 1 and 2 is characterized in that: described sensor (10) contacts with described guide rod (8).
4, a kind of strong brine energy recovery device based on reverse osmosis desalination technology according to claim 1 and 2 is characterized in that: described sensor (10) does not contact with described guide rod (8).
5, a kind of strong brine energy recovery device based on reverse osmosis desalination technology according to claim 1 and 2 is characterized in that: described controller (9) links to each other with described water draining tee magnetic valve (12) with described water inlet three-way magnetic valve (6).
6, a kind of strong brine energy recovery device according to claim 1 and 2 based on reverse osmosis desalination technology, it is characterized in that: described controller (9) does not link to each other with described water draining tee magnetic valve (12) with described water inlet three-way magnetic valve (6), controls by electromagnetic wave signal.
7, a kind of strong brine energy recovery device based on reverse osmosis desalination technology according to claim 1 and 2 is characterized in that: described controller (9) is Electromagnetic Control cabinet or computer.
CNB2005100353288A 2005-06-17 2005-06-17 Strong brine energy recovery device based on reverse osmosis desalination technology CN100341609C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2005100353288A CN100341609C (en) 2005-06-17 2005-06-17 Strong brine energy recovery device based on reverse osmosis desalination technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNB2005100353288A CN100341609C (en) 2005-06-17 2005-06-17 Strong brine energy recovery device based on reverse osmosis desalination technology

Publications (2)

Publication Number Publication Date
CN1721048A true CN1721048A (en) 2006-01-18
CN100341609C CN100341609C (en) 2007-10-10

Family

ID=35911869

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005100353288A CN100341609C (en) 2005-06-17 2005-06-17 Strong brine energy recovery device based on reverse osmosis desalination technology

Country Status (1)

Country Link
CN (1) CN100341609C (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100450591C (en) * 2007-01-04 2009-01-14 天津大学 Double-dial coupled type pressure exchanger for sea water or brine reverse osmosis desalination system
CN101041484B (en) * 2006-03-22 2010-12-15 天津市蓬拓科技有限公司 Hyperfiltration sea-water distillatory with energy recovery
CN102019144A (en) * 2009-09-11 2011-04-20 株式会社东芝 Power recovery apparatus
CN102138007A (en) * 2008-08-29 2011-07-27 丹佛斯公司 Reverse-osmosis apparatus
CN102553443A (en) * 2012-01-17 2012-07-11 浙江大学 Misalignment channel autorotation hydraulic rotary piston supercharger
ES2396280A1 (en) * 2009-12-07 2013-02-20 Manuel BARRETO CORUJO Modular hybrid system of static cameras with virtual rotation for energetic saving of desalation by improved reverse osmosis. (Machine-translation by Google Translate, not legally binding)
CN103237592A (en) * 2010-12-02 2013-08-07 东丽株式会社 Reverse osmosis membrane separator, start-p method therefor, and method for producing permeate
CN104667749A (en) * 2015-02-14 2015-06-03 张英华 Energy recoverer and method for increasing water yield of reverse osmosis sea water desalination device
CN104759207A (en) * 2015-04-22 2015-07-08 秦皇岛永纯洁海水淡化技术工程有限公司 Energy recycling device for double-purpose and double-piston-rod hydraulic cylinder
CN104791214A (en) * 2015-04-22 2015-07-22 秦皇岛永纯洁海水淡化技术工程有限公司 Volumetric fluid pump allowing waste fluid energy to be used
CN102791362B (en) * 2009-10-16 2015-12-02 阿奎林有限公司 Optimization Work switch system

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
GB201813792D0 (en) * 2018-08-23 2018-10-10 Davies Philip Andrew Desalination system and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1125812A (en) * 1994-12-30 1996-07-03 北京市西城区新开通用试验厂 Roller-type top-driven digital-controlled beam-pumping unit
IT1316324B1 (en) * 2000-02-02 2003-04-10 Schenker Italia S R L An apparatus for water desalination by osmosis inversacon energy recovery
CN2461915Y (en) * 2000-12-29 2001-11-28 刘博渊 Reverse osmosis unit with piston type energy recoverer
CN1156334C (en) * 2001-08-15 2004-07-07 天津大学 Valve controlled residual pressure recovering equipment for impervious desalination system
US7018477B2 (en) * 2002-01-15 2006-03-28 Engel Harold J Dispensing system with a piston position sensor and fluid scanner
KR100526607B1 (en) * 2003-07-08 2005-11-08 삼성전자주식회사 linear compressor and control method thereof
CN2677366Y (en) * 2003-12-12 2005-02-09 国家海洋局天津海水淡化与综合利用研究所 Medium and small size integrated reverse asmosis sea water desalination device

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101041484B (en) * 2006-03-22 2010-12-15 天津市蓬拓科技有限公司 Hyperfiltration sea-water distillatory with energy recovery
CN100450591C (en) * 2007-01-04 2009-01-14 天津大学 Double-dial coupled type pressure exchanger for sea water or brine reverse osmosis desalination system
CN102138007A (en) * 2008-08-29 2011-07-27 丹佛斯公司 Reverse-osmosis apparatus
CN102138007B (en) * 2008-08-29 2014-04-23 丹佛斯公司 Reverse-osmosis apparatus
CN102019144A (en) * 2009-09-11 2011-04-20 株式会社东芝 Power recovery apparatus
CN102791362B (en) * 2009-10-16 2015-12-02 阿奎林有限公司 Optimization Work switch system
ES2396280A1 (en) * 2009-12-07 2013-02-20 Manuel BARRETO CORUJO Modular hybrid system of static cameras with virtual rotation for energetic saving of desalation by improved reverse osmosis. (Machine-translation by Google Translate, not legally binding)
CN103237592A (en) * 2010-12-02 2013-08-07 东丽株式会社 Reverse osmosis membrane separator, start-p method therefor, and method for producing permeate
CN103237592B (en) * 2010-12-02 2015-10-14 东丽株式会社 The production method of reverse osmosis membrane separator, its starting method and permeate
CN102553443A (en) * 2012-01-17 2012-07-11 浙江大学 Misalignment channel autorotation hydraulic rotary piston supercharger
CN102553443B (en) * 2012-01-17 2013-11-13 浙江大学 Misalignment channel autorotation hydraulic rotary piston supercharger
CN104667749A (en) * 2015-02-14 2015-06-03 张英华 Energy recoverer and method for increasing water yield of reverse osmosis sea water desalination device
CN104759207A (en) * 2015-04-22 2015-07-08 秦皇岛永纯洁海水淡化技术工程有限公司 Energy recycling device for double-purpose and double-piston-rod hydraulic cylinder
CN104791214A (en) * 2015-04-22 2015-07-22 秦皇岛永纯洁海水淡化技术工程有限公司 Volumetric fluid pump allowing waste fluid energy to be used

Also Published As

Publication number Publication date
CN100341609C (en) 2007-10-10

Similar Documents

Publication Publication Date Title
CN101865190B (en) Position and flow double-close-loop direct-drive volume control electro-hydraulic servo system
US9109587B2 (en) Multistage piston compressor
CN106014907B (en) A kind of plunger pump of piezoelectric chip oscillator driving
CN103603765B (en) Offshore type Wave energy sea water desalinating is in conjunction with electricity generating device
CN2898356Y (en) Two-action and multi-cylinder reciprocating pump driven by linear motor
CN203769736U (en) Double-well mutual balance hydraulic pumping unit hydraulic system
CN1134285C (en) Fluid driven pumps and apparatus employing such pumps
CN201580012U (en) Hydraulic control system for hydraulic press
US20110062062A1 (en) Power recovery apparatus
CN201225264Y (en) Clearance stepless adjusting device of piston reciprocating compressor
US6491813B2 (en) Equipment for desalination of water by reverse osmosis with energy recovery
EP2881370A1 (en) Membrane seawater desalination pressurization and energy recovery integrated method and device
CN201769389U (en) Hydraulic press
JPH07102305B2 (en) Reverse osmosis membrane concentrator
CN202040038U (en) Double-acting hydraulic driving reciprocating plunger pump
RU2669099C2 (en) Bellows pump with hydraulic drive
CN102102688B (en) High-speed heavy-duty linear reciprocating body operation energy storage device
CN103148032A (en) Alternating-loading hydraulic system
CN102168540B (en) Hydraulic pumping unit with pressure compensation device
CN101782095B (en) Differential energy recovery device and method for seawater desalination system
CN108101340B (en) High-dryness sewage sludge dewatering method with double effects of mechanical squeezing and air flow carrying
CN101581328A (en) United piston self-pressurization energy recovery pump used for reverse osmosis seawater desalination system
AU2013356435B2 (en) System and method for controlling motion profile of pistons
CN205117648U (en) Plunger pump
CN101428913A (en) Reverse osmosis water production process

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20071010

Termination date: 20160617

CF01 Termination of patent right due to non-payment of annual fee