CN201737788U - Small reverse-osmosis seawater desalinating device with plunger type energy-recovery high-pressure pump - Google Patents

Small reverse-osmosis seawater desalinating device with plunger type energy-recovery high-pressure pump Download PDF

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Publication number
CN201737788U
CN201737788U CN2010202640283U CN201020264028U CN201737788U CN 201737788 U CN201737788 U CN 201737788U CN 2010202640283 U CN2010202640283 U CN 2010202640283U CN 201020264028 U CN201020264028 U CN 201020264028U CN 201737788 U CN201737788 U CN 201737788U
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China
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piston
pressure
water
pump
reverse osmosis
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CN2010202640283U
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Chinese (zh)
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初喜章
王生辉
冯厚军
赵河立
张乾
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国家海洋局天津海水淡化与综合利用研究所
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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 utility model discloses a small reverse-osmosis seawater desalinating device with a plunger type energy-recovery high-pressure pump, which comprises a water sucking pump, a preprocessing assembly and a reverse-osmosis membrane assembly connected through pipelines, wherein the plunger type energy-recovery high-pressure pump is connected with the reverse-osmosis membrane assembly, the pump comprises a low-pressure raw-water inlet, a high-pressure raw-water outlet, a high-pressure concentrated-water inlet, a low-pressure concentrated-water discharge port, a plunger pump head for pressurizing raw water, a double-extended-shaft electromotor and a plunger piston motor for recovering the energy of reverse-osmosis high-pressure concentrated water, and the three parts are coaxial. The process thereof comprises the following steps that seawater enters the high-pressure pump after being preprocessed and enters a reverse-osmosis membrane pressure container from the high-pressure raw-water outlet after being pressurized, freshwater after reverse-osmosis membrane desalination is produced water, strong brine from the reverse-osmosis pressure container enters the high-pressure pump for recovering the excess pressure, and the lower-pressure strong brine after excess pressure recovery is discharged from the low-pressure concentrated-water discharge port of the energy-recovery high-pressure pump. The utility model pressurizes the raw water and simultaneously also can recover and utilize the energy of the reverse-osmosis high-pressure concentrated water.

Description

Small reverse osmosis seawater desalting device with plunger tpe energy reclaiming high-pressure pump

Technical field

The utility model relates to a kind of seawater desalination system, relates in particular to a kind of small reverse osmosis seawater desalting device with plunger tpe energy reclaiming high-pressure pump.

Background technology

Reverse osmosis desalination technology is to utilize high-pressure pump that raw water is pressurizeed, make its pressure reach required working pressure, former water after the pressurization is flowed in the reverse osmosis membrane pressurized vessel, and the fresh water that sees through reverse osmosis membrane becomes product water, and the strong brine that sees through reverse osmosis membrane then is being with high pressure to discharge.

An important goal of reverse osmosis desalination technology development is to reduce running cost, and the shared proportion maximum of energy consumption in the formation of running cost is to reduce the most effective means of desalinating cost so cut down the consumption of energy.Wherein improving the efficient of high-pressure pump and the overbottom pressure of strong brine is recycled is most important both direction.

The overbottom pressure recovery and utilization technology of reverse osmosis system strong brine is the energy recovery technology, and present energy recycle device mainly contains two types, is respectively hydraulic turbine formula energy recycle device and Work-exchange type energy recovery device.But these two kinds of energy recovery technology are only applicable to medium-scale above energy recycle device at present.

From the market of present sea water desaltination, because people are to the understanding of sea water desaltination water quality and the decline gradually of sea water desaltination cost, desalination technology is accepted by people.Small-sized sea water desalinating plant has that overall investment is few, volume is little, mobility, promptly buy and advantage such as promptly use, the occasion of very suitable family, boats and ships, drilling unit, small-sized island or a small amount of sea water desaltination demand of other short-terms is used, develop very fastly, have vast market.

In general, for medium-and-large-sized reverse osmosis desalination device, the ton water consumption has dropped to 3.8~4.5kWh, and the ton water consumption of small-sized sea water desalinating plant will be up to 9~12kWh.Wherein most important reason has two: one, and the efficient of large-scale high-pressure pump that is used for the conventional version of reverse osmosis seawater desalination system is higher than the minitype high voltage pump; The 2nd, be not specially adapted to the apparatus for energy recovery of small reverse osmosis seawater desalting device, if the apparatus for energy recovery pattern that adopts relatively large reverse osmosis desalination device to adopt perhaps is difficult to type selecting, perhaps investment is very uneconomical.

The utility model content

The utility model provides a kind of small reverse osmosis seawater desalting device with plunger tpe energy reclaiming high-pressure pump at above-mentioned prior art. and adopt this sea water desalinating plant to carry out sea water desaltination and solved present small reverse osmosis seawater desalting plant energy consumption problem of higher.

In order to solve the problems of the technologies described above, the utlity model has the technical scheme that the small reverse osmosis seawater desalting device of plunger tpe energy reclaiming high-pressure pump is achieved is: comprise the water suction pump, pre-processing assembly and the reverse osmosis membrane assembly that are connected by pipeline at least, also be connected with a plunger tpe energy reclaiming high-pressure pump with described reverse osmosis membrane assembly; Described plunger tpe energy reclaiming high-pressure pump comprises electric motor, plunger pump head, piston motor and fixing swash plate, and described plunger pump head is used for to former water supercharging, and described piston motor is used for reclaiming reverse osmosis high-pressure thick water energy; Described electric motor is the double extension shaft electric motor, and the output shaft of one end is connected with described plunger pump head, and the output shaft of its other end is connected with described piston motor; Described plunger pump head is identical with described piston motor structure, includes: be used for holding ram pump central shaft and a plurality of pump head housing that is parallel to the piston of ram pump central shaft; On the pump head housing, be provided with a water-in and a water outlet; Described piston comprises and the piston/cylinder of ram pump spigot shaft coaxle rotation that be provided with a plurality of piston bodies in the described piston/cylinder, described piston body is connected with a backhaul dish; Described fixedly swash plate is used to make a plurality of piston bodies that are parallel to the ram pump central shaft to change the relative position that it is parallel to central shaft when rotated; The end that described a plurality of piston body is positioned at the backhaul dish is equipped with fixedly ball of piston; Described fixedly swash plate is provided with the piston piston shoes, described piston shoes have be used for the articulated joint of Hinged piston one end spherosome and the bottom of sliding on fixing swash plates, this base diameter is a bit larger tham the Circularhole diameter on the backhaul dish, when piston hole on the backhaul dish was passed in articulated joint, this bottom was stuck on the backhaul dish just; The piston hole of each piston body of assembling forms a piston/cylinder sap cavity on the described piston/cylinder, and the bottom of described piston/cylinder sap cavity is equipped with a through hole; The outer face of described piston/cylinder through hole is equipped with valve plate, and this valve plate is used for distributing the through hole of described piston/cylinder to be communicated with water-in or to be communicated with water outlet; Be provided with pressure spring between described piston/cylinder and the backhaul dish so that the piston piston shoes with fixedly closely contact between the swash plate and between piston/cylinder through hole and the valve plate; Being connected of the water-in of described plunger tpe energy reclaiming high-pressure pump and water outlet is as follows: the water-in of described plunger pump head is the former water inlet of low pressure, the former water inlet of described low pressure is connected with described pre-processing assembly, the water outlet of described plunger pump head is the former water out of high pressure, the former water out of described high pressure is connected with the water-in of reverse osmosis membrane assembly, the water-in of described piston motor is the high-pressure thick water inlet, described high-pressure thick water inlet is connected with the high-pressure thick water out of described reverse osmosis membrane assembly, and the water outlet of described piston motor is the low-press thick water outlet.

Compared with prior art, the beneficial effects of the utility model are:

(1) adopting fixedly, the oblique plate plunger pump principle can make the ram pump head have maximum volumetric efficiency as the pump head of energy reclaiming high-pressure pump;

(2) adopt the double output shaft electric motor, and the diaxon of electric motor linked to each other with the piston motor turning axle with the plunger pump head respectively, on whole energy reclaiming high-pressure pump, reduced the use of driving members such as gear and belt to the full extent, made energy reclaiming high-pressure pump have maximum mechanical efficiency;

(3) adopt the recycling of the inverse process realization of ram pump to the reverse osmosis concentrated water overbottom pressure, solved the dense water overbottom pressure energy recovery problem of small reverse osmosis desalting equipment aptly, can be used for scale on the desalination by reverse osmosis device of daily output fresh water 50 ton per days, the minimum desalination by reverse osmosis device that uses with 2 ton per days;

(4) adopt energy recycle device, high pressure pump head, electric motor integrated design, integral pump system design compactness, in light weight makes the reverse osmosis system design cycle simpler, reduces the volume and weight of small reverse osmosis desalting equipment;

(5) adopt the designed small-sized sea water desalinating plant of small-sized sea water desalinating plant technology that uses described energy reclaiming high-pressure pump, the ton water consumption reduces half approximately from other small-sized sea water desalinating plant energy consumptions.Actual measurement relatively, small-sized sea water desalinating plant energy consumption in the market is many at 9~12kWh, and adopts the designed small-sized sea water desalinating plant ton water consumption of the small-sized sea water desalinating plant technology of described use energy reclaiming high-pressure pump at 4~5kWh.

Description of drawings

Fig. 1 is the external structure synoptic diagram of plunger tpe energy reclaiming high-pressure pump in the utility model;

Fig. 2 is the axial section synoptic diagram of high-pressure pump shown in Fig. 1;

Fig. 3 is the vertical view cutaway drawing of high-pressure pump shown in Fig. 1;

Fig. 4 has the small reverse osmosis seawater desalting device technique schema of high-pressure pump as shown in Figure 1.

Among the figure:

I plunger pump head II electric motor III piston motor

1, fixing swash plate 3, the 13 backhaul dishes of 15 steady braces 2,14

4,24 piston piston shoes, 5,12 piston/cylinders, 6,21 piston/cylinder sap cavities

7,11 valve plates, 8 motor stators, 9 motor rotors

10 bearings, 16 pistons are ball 17,25 piston bodies fixedly

The former water out 20 high-pressure thick water inlets of 18 springs, 19 high pressure

23 pistons are the former water inlet 26 low-press thick water outs of ball 25 low pressure fixedly

27 ram pump central shafts, 28 motor output shafts, 29 piston motor central shafts

31 seawater, 32 water intaking pumps, 33 pre-processing assemblies

34 boosting pumps, 35 reverse osmosis membrane assemblies, 36 frequency transformers

The former seawater of 37 valves, 38 energy reclaiming high-pressure pump A

Seawater D sub-high pressure seawater after the seawater C pre-treatment before the B pre-treatment

E high pressure sea water F produces water (fresh water) G high-pressure thick water

H low pressure concentrated water discharge

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is done to describe in further detail.

As shown in Figure 1, the small reverse osmosis seawater desalting device that the utlity model has the plunger tpe energy reclaiming high-pressure pump comprises water suction pump, pre-processing assembly and the reverse osmosis membrane assembly that is connected by pipeline at least, also is connected with a plunger tpe energy reclaiming high-pressure pump with described reverse osmosis membrane assembly; The plunger tpe energy reclaiming high-pressure pump comprises: be used for to plunger pump head I, the electric motor II of former water supercharging and be used for reclaiming piston motor III three parts of reverse osmosis high-pressure thick water energy; The shared turning axle that can the central shaft of above-mentioned three parts be connected to form by steady brace 1 or other mode of connection is as having illustrated ram pump central shaft 27 and motor output shaft 28 and piston motor output shaft 29 among Fig. 2 and Fig. 3; And the former water inlet 25 of low pressure, the former water out 19 of high pressure, high-pressure thick water inlet 20 and low-press thick water outlet 26.

Described electric motor II in the utility model is the double extension shaft electric motor, electric motor can be with three-phase or two-phase motor, can select according to working conditions, this electric motor is except possessing the required stator that has 8 of common electric motor, rotor 9 etc., different is to have two output shafts 28 of stretching, the output shaft of one end is connected with described plunger pump head I, and the output shaft of its other end is connected with described piston motor III.

The structure of described plunger pump head I comprises pump head housing, valve plate 7 and fixing swash plate 2 shown in the left half among Fig. 2 and Fig. 3, described pump head housing is used for holding ram pump central shaft 27 and a plurality of piston that is parallel to ram pump central shaft 27; Described valve plate 7 is used for distributing the former water of low pressure to enter piston and the valve plate 7 of the former water of effusive high pressure from piston; Described fixedly swash plate 2 is used to make a plurality of piston bodies that are parallel to the ram pump central shaft to change the relative position that it is parallel to central shaft when rotated, and promptly fixedly swash plate 2 can make a plurality of piston bodies 17 that are parallel to centre rotational axis change the relative position that piston is parallel to central shaft around 27 rotations of ram pump central shaft the time.On the pump head housing, be provided with a water-in and a water outlet, this water-in is the former water inlet 25 of low pressure, this water outlet is the former water out 19 of high pressure, be provided with a plurality of piston bodies 17 that are parallel to ram pump central shaft 27 in the described piston/cylinder 5, piston body 17 is enclosed within on the backhaul dish 3, the end that described a plurality of piston body 17 is positioned at backhaul dish 3 is equipped with fixedly ball 16 of piston, described fixedly swash plate 2 is provided with piston piston shoes 4, described piston piston shoes 4 have be used for the articulated joint of Hinged piston one end spherosome and the bottom of sliding on fixing swash plates, this base diameter is a bit larger tham the Circularhole diameter on the backhaul dish, when piston hole on the backhaul dish is passed in articulated joint, this bottom is stuck on the backhaul dish just, does not break away from piston piston shoes 4 thereby assurance piston body 17 can rotate on piston piston shoes 4 at any angle.That is, the piston piston shoes 4 of piston body 17 bottoms can fixedly slide on the swash plate 2, and the piston hole of each piston body 17 of assembling forms a piston/cylinder sap cavity 6 on the described piston/cylinder 5, and the bottom of described piston/cylinder sap cavity 6 is equipped with a through hole; Described valve plate 7 is assemblied on the outer face of piston/cylinder through hole, this valve plate 7 is used for distributing the through hole of described piston/cylinder 5 to be communicated with water-in or to be communicated with water outlet, described valve plate is provided with symmetric U type hole, and described water-in or water outlet are communicated with the through hole of piston/cylinder by the U type hole on the valve plate.The setting pressure spring makes piston piston shoes 4 closely contact with fixing swash plate 2 between backhaul dish 3 and piston/cylinder 5, makes closely contacting with valve plate 7 into and out of water end (W.E.) on the piston/cylinder 5 simultaneously.

The structure of described piston motor III is shown in the right half among Fig. 2 and Fig. 3, the structure basically identical of the structure of this piston motor III and above-mentioned plunger pump head I, mainly comprising the shell that holds piston motor central shaft 29 and a plurality of piston body 22, is that high-pressure thick water inlet 20 and low-press thick water out 26 are arranged on the shell; Be used for distributing the former water of low pressure to enter piston and the valve plate 11 of the former water of effusive high pressure from piston; Be used to make a plurality of piston bodies 22 that are parallel to piston motor central shaft 29 around these central shaft 29 rotations the time, to change the fixedly swash plate 14 that piston is parallel to the relative position of central shaft.Other details repeat no more.

What the energy reclaiming high-pressure pump in the utility model was suitable is, the central shaft 27 of plunger pump head I, electric motor two stretch output shaft 28 and piston motor central shaft 29 and become a turning axle by mode relative fixed such as steady braces, both reduced the use of driving members such as gear, belt, increase mechanical efficiency, also saved the volume and weight of energy reclaiming high-pressure pump on to greatest extent.

As shown in Figure 4, in a kind of small reverse osmosis seawater desalting device of the utility model, the intake-outlet of described energy reclaiming high-pressure pump 38 connects as follows: the former water inlet 25 of described low pressure is connected with described pre-processing assembly 33, the former water out 19 of described high pressure is connected with the water-in of reverse osmosis membrane assembly 35, described high-pressure thick water inlet 20 is connected with the high-pressure thick water out of described reverse osmosis membrane assembly 35, and the water outlet of described piston motor III is a low-press thick water outlet 26.Described energy reclaiming high-pressure pump 38 adopts frequency transformer 36 to control the rotating speed of electric motor, thereby can control the water flow of described energy reclaiming high-pressure pump 38 effectively.Between the high-pressure thick water out of described reverse osmosis membrane assembly 35 and the high-pressure thick water inlet of described energy reclaiming high-pressure pump valve 37 can be set, with the required pressure of control reverse osmosis desalination.Enter into the former water pressure scope of energy reclaiming high-pressure pump 38 at 0.2MPa~0.5Mpa by the former water inlet 25 of low pressure; If the pretreated former water pressure of process satisfies the requirement of minimal pressure 0.2MPa, then directly enter energy reclaiming high-pressure pump; If, then a boosting pump 34 need be set between pre-processing assembly 33 and energy reclaiming high-pressure pump 38 through pretreated former water pressure<0.2MPa, thereby, former water pressure is risen to 〉=0.2Mpa.

The technological process of using above-mentioned small reverse osmosis seawater desalting device to carry out sea water desaltination is: seawater pumps into pre-processing assembly 33 through water suction pump 32; Seawater enters into described energy reclaiming high-pressure pump 38 by the former water inlet 25 of low pressure after the pre-treatment; Through enter into the reverse osmotic pressure force container of reverse osmosis membrane assembly 35 after the supercharging of plunger pump head I from the former water out 19 of high pressure, wherein, the fresh water after the desalination of process reverse osmosis membrane is promptly desalinated the product water after the processing; And enter into described energy reclaiming high-pressure pump 38 by high-pressure thick water inlet 20 from the strong brine that the reverse osmotic pressure force container comes out, and reclaiming overbottom pressure by the piston motor III, the low-press thick salt solution after the recovery overbottom pressure is from the low-press thick water out discharging of energy reclaiming high-pressure pump 38.Realize the small-sized desalting equipment of the small reverse osmosis seawater desalting device technique of described use energy reclaiming high-pressure pump, comprise equipment such as water suction pump (or lift pump), pre-processing assembly, boosting pump (determining whether needs), described energy reclaiming high-pressure pump and reverse osmosis membrane assembly according to pretreated former water pressure.

Below, according to the example of the link of device in the operational process, further specify the utility model energy reclaiming high-pressure pump and be and how to realize to the energy recovery of the dense water of small reverse osmosis desalination system with to the supercharging of former water.

Integral energy is reclaimed high-pressure pump, and plunger pump head I is used for being pressurized to required pressure to former water, and the piston motor III is used for reclaiming the overbottom pressure realization energy recovery of dense water, and the electric motor II is used for replenishing the deficiency that piston motor is given former water supercharging required torque.

Former water enters the plunger pump head from the former water inlet 25 of the low pressure of plunger pump head I, enters in the piston/cylinder sap cavity 6 by valve plate 7.Former water after the pressurization flows out from piston/cylinder sap cavity 6, flows out from the former water out 19 of high pressure by valve plate 7.The afterbody of piston body 17 has fixedly ball 16, ball 16 is hinged on the piston piston shoes 4, can arbitrarily angled rotation and do not break away from piston piston shoes 4, the piston body 17 of hinged piston piston shoes 4 is enclosed within on the backhaul dish 3, and is installed in the piston/cylinder sap cavity 6 of piston/cylinder 5.Fixedly swash plate 2 is fixed on the bottom of plunger pump head I by steady brace 1, owing between backhaul dish 7 and the piston/cylinder 5 pressure spring 18 has been installed, can guarantee that piston piston shoes 4 closely contact with fixing swash plate 2, and rotational slide on fixing swash plate 2.Piston/cylinder 5 fix with ram pump central shaft 27 and with these central shaft 27 rotations and with several piston bodies 17 in the piston/cylinder sap cavity 6 around its central shaft 27 rotations and fixedly sliding on the swash plate 2.Because piston piston shoes 4 are close to fixedly swash plate 2 rotations, therefore the relative position that is parallel to central shaft of piston can change along with rotation, when piston body 17 during away from valve plate 7, former water enters in the piston/cylinder sap cavity 6 by valve plate 7, when piston body 17 when valve plate 7 directions are moved, piston body 17 pumps from the former water out 19 of high pressure with former water supercharging and by valve plate 7.The speed of piston/cylinder 5 rotations is fast more, and its raw water flow that pumps is big more.

The piston motor III realizes that to high-pressure thick water overbottom pressure the process of energy recovery is the inverse process that plunger pump head I is given former water pressurization on principle.That is: high-pressure thick water from high-pressure thick water inlet 20 enter the piston motor III, and enter piston/cylinder sap cavity 21 by valve plate 11, low-press thick water after the release overbottom pressure flows out from the through hole of piston/cylinder sap cavity 21, discharges from low-press thick water out 26 by valve plate 11.Because high-pressure thick water gives 22 1 of piston bodies towards the fixing pressure of swash plate 14 in piston/cylinder sap cavity 21, make piston body 22 have one to the fixing movement tendency of swash plate 14 directions, like this, fixedly swash plate 14 is just given 22 1 reactive forces perpendicular to the swash surfaces direction of piston body, this reactive force produced a vertical piston motor output shaft 29 and with the not coplanar component of output shaft 29, because piston body 22 is contained in the sap cavity 21 of piston/cylinder 12, piston/cylinder has just had one and has driven the moment of torsion that output shaft is selected.Be with piston body 22 and rotate around conveying axis along with piston/cylinder 12, the overbottom pressure of dense water discharges the mechanical energy that changes into piston motor.In the rotary course of piston/cylinder 12, because swash plate 14 is pushing away piston body 22 to the motion of valve plate 11 directions, the dense water that has discharged energy is just given release sap cavity 21 by piston body 22, discharges from low-press thick water outlet 26 by valve plate 11.

Electric motor II in the utility model is the double output shaft electric motor, between plunger pump head I and piston motor III.The double output shaft 28 of electric motor is fixedlyed connected respectively at the output shaft 29 of the III of the central shaft 27 of plunger pump head I and piston motor, because the piston motor III is by reclaiming the moment of torsion that dense water overbottom pressure provides, greatly reduce the electric motor II the required moment of torsion that provides of former water supercharging, the power consumption of promptly having saved electric motor greatly are provided.

Below the small-sized sea water desalinating plant implementation of processes process of using this energy reclaiming high-pressure pump is illustrated: former seawater A is through water intaking pump 32 or water suction pump 32, seawater B enters pre-processing assembly (system) 33 before the pre-treatment, after purifying the water inlet reach reverse osmosis membrane and require through pretreatment system, seawater C is after energy reclaiming high-pressure pump 38 is pressurized to required pressure after the pre-treatment, high pressure sea water E enters reverse osmosis membrane pressurized vessel 35, see through being of reverse osmosis membrane and produce water F, high-pressure thick water G enters energy reclaiming high-pressure pump 38, thereby recycle overbottom pressure and carried out supercharging to seawater C after the pre-treatment, so, realize reverse osmosis concentrated water energy-recovering machine desalting process.

In addition, enter at seawater after the pre-treatment before the former water inlet 25 of low pressure of energy reclaiming high-pressure pump 38, also should comprise following process according to its hydraulic pressure difference: because preferably be controlled at 0.2MPa~0.5Mpa in the former water pressure of the former water inlet 25 of the low pressure that enters energy reclaiming high-pressure pump 38, if the pressure of the pretreated seawater C of process satisfies the requirement of minimal pressure 0.2MPa, can directly enter the former water inlet 25 of low pressure of energy reclaiming high-pressure pump 38 as mentioned above; If seawater C can not satisfy the pressure requirement of minimal pressure 0.2MPa after this pre-treatment, then need to be provided with boosting pump 34 with the boost in pressure of seawater after the pre-treatment sub-high pressure seawater D to the required pressure range of the former water inlet 25 of low pressure of energy reclaiming high-pressure pump 38.

Although in conjunction with figure the utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong within the protection of the present utility model.

Claims (6)

1. small reverse osmosis seawater desalting device with plunger tpe energy reclaiming high-pressure pump, at least comprise the water suction pump (32), pre-processing assembly (33) and the reverse osmosis membrane assembly (35) that connect by pipeline, it is characterized in that, also be connected with a plunger tpe energy reclaiming high-pressure pump (38) with described reverse osmosis membrane assembly (35);
Described plunger tpe energy reclaiming high-pressure pump (38) comprises electric motor (II), plunger pump head (I), piston motor (III) and fixing swash plate, described plunger pump head (I) is used for to former water supercharging, and described piston motor (III) is used for reclaiming reverse osmosis high-pressure thick water energy; Described electric motor (II) is the double extension shaft electric motor, and the output shaft of one end is connected with described plunger pump head (I), and the output shaft of its other end is connected with described piston motor (III); Described plunger pump head (I) is identical with described piston motor (III) structure, includes: be used for holding ram pump central shaft and a plurality of pump head housing that is parallel to the piston of ram pump central shaft; On the pump head housing, be provided with a water-in and a water outlet; Described piston comprises and the piston/cylinder of ram pump spigot shaft coaxle rotation that be provided with a plurality of piston bodies in the described piston/cylinder, described piston body is connected with a backhaul dish; Described fixedly swash plate is used to make a plurality of piston bodies that are parallel to the ram pump central shaft to change the relative position that it is parallel to central shaft when rotated; The end that described a plurality of piston body is positioned at the backhaul dish is equipped with fixedly ball of piston; Described fixedly swash plate is provided with the piston piston shoes, described piston piston shoes have be used for the articulated joint of Hinged piston one end spherosome and the bottom of sliding on fixing swash plates, this base diameter is a bit larger tham the Circularhole diameter on the backhaul dish, when piston hole on the backhaul dish was passed in articulated joint, this bottom was stuck on the backhaul dish just; The piston hole of each piston body of assembling forms a piston/cylinder sap cavity on the described piston/cylinder, and the bottom of described piston/cylinder sap cavity is equipped with a through hole; The outer face of described piston/cylinder through hole is equipped with valve plate, and this valve plate is used for distributing the through hole of described piston/cylinder to be communicated with water-in or to be communicated with water outlet; Be provided with pressure spring between described piston/cylinder and the backhaul dish so that the piston piston shoes with fixedly closely contact between the swash plate and between piston/cylinder through hole and the valve plate;
Being connected of the water-in of described plunger tpe energy reclaiming high-pressure pump (38) and water outlet is as follows: the water-in of described plunger pump head (I) is the former water inlet of low pressure (25), the former water inlet of described low pressure (25) is connected with described pre-processing assembly (33), the water outlet of described plunger pump head (I) is the former water out of high pressure (19), the former water out of described high pressure (19) is connected with the water-in of reverse osmosis membrane assembly (35), the water-in of described piston motor (III) is high-pressure thick water inlet (20), described high-pressure thick water inlet (20) is connected with the high-pressure thick water out of described reverse osmosis membrane assembly (35), and the water outlet of described piston motor (III) is low-press thick water outlet (26).
2. small reverse osmosis seawater desalting device according to claim 1 is characterized in that, described energy reclaiming high-pressure pump (38) adopts frequency transformer to control the rotating speed of electric motor, thereby controls the water flow of described energy reclaiming high-pressure pump (38).
3. small reverse osmosis seawater desalting device according to claim 1, it is characterized in that, water-in in the described plunger pump head (I) is the former water inlet of low pressure (25), described water outlet is the former water out of high pressure (19), and described valve plate (7) is used for distributing the former water of low pressure to enter the still former water of outflow high pressure from piston of piston.
4. small reverse osmosis seawater desalting device according to claim 1 is characterized in that, the water-in in the described piston motor (III) is high-pressure thick water inlet (20), and described water outlet is low-press thick water outlet (26); Described valve plate (11) is used for distributing high-pressure thick water to enter still outflow low-press thick water from piston of piston.
5. small reverse osmosis seawater desalting device according to claim 1 is characterized in that, described valve plate is provided with symmetric U type hole, and described water-in or water outlet are communicated with the through hole of piston/cylinder by the U type hole on the valve plate.
6. small reverse osmosis seawater desalting device according to claim 1, it is characterized in that, between the high-pressure thick water out of described reverse osmosis membrane assembly (35) and the high-pressure thick water inlet of described energy reclaiming high-pressure pump valve is set, with the required pressure of control reverse osmosis desalination.
CN2010202640283U 2010-07-20 2010-07-20 Small reverse-osmosis seawater desalinating device with plunger type energy-recovery high-pressure pump CN201737788U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010202640283U CN201737788U (en) 2010-07-20 2010-07-20 Small reverse-osmosis seawater desalinating device with plunger type energy-recovery high-pressure pump

Applications Claiming Priority (1)

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CN2010202640283U CN201737788U (en) 2010-07-20 2010-07-20 Small reverse-osmosis seawater desalinating device with plunger type energy-recovery high-pressure pump

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102838186A (en) * 2012-07-31 2012-12-26 朱荣辉 Membrane seawater desalination pressurization and energy recovery integrated method and device
CN104261516A (en) * 2014-09-19 2015-01-07 北京工业大学 Piston-type liquid switcher-based liquid pressure energy recovery method
CN104295436A (en) * 2014-09-19 2015-01-21 湖南大学 Plunger type hydraulic energy recycling device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102838186A (en) * 2012-07-31 2012-12-26 朱荣辉 Membrane seawater desalination pressurization and energy recovery integrated method and device
CN104261516A (en) * 2014-09-19 2015-01-07 北京工业大学 Piston-type liquid switcher-based liquid pressure energy recovery method
CN104295436A (en) * 2014-09-19 2015-01-21 湖南大学 Plunger type hydraulic energy recycling device
CN104295436B (en) * 2014-09-19 2016-08-03 湖南大学 A kind of plunger hydraulic energy recycle device

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