CN106988977A - Desalinization energy regenerating and boost in pressure integrative machine - Google Patents
Desalinization energy regenerating and boost in pressure integrative machine Download PDFInfo
- Publication number
- CN106988977A CN106988977A CN201710299117.8A CN201710299117A CN106988977A CN 106988977 A CN106988977 A CN 106988977A CN 201710299117 A CN201710299117 A CN 201710299117A CN 106988977 A CN106988977 A CN 106988977A
- Authority
- CN
- China
- Prior art keywords
- plunger
- boost
- pressure
- rotor cylinder
- stator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/22—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block having two or more sets of cylinders or pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/122—Details or component parts, e.g. valves, sealings or lubrication means
- F04B1/124—Pistons
- F04B1/126—Piston shoe retaining means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2035—Cylinder barrels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2064—Housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/12—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F04B1/20—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinder axes coaxial with, or parallel or inclined to, main shaft axis having rotary cylinder block
- F04B1/2014—Details or component parts
- F04B1/2078—Swash plates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of desalinization energy regenerating and boost in pressure integrative machine.The present invention provides the integrated machine device of a kind of energy recycle device, high-pressure pump and the big equipment of boost in pressure pump three to reverse osmosis seawater desalination system.All-in-one is the single rotor coaxial structure of multichannel two-chamber, and three big critical equipments in seawater desalination system can be achieved(Energy recycle device, high-pressure pump and boost in pressure pump)Function so that space-consuming is smaller, no intermediate connection tube road and control valve, drastically reduce the area the dynamic and static sealing part of high pressure, substantially improves the security reliability of system.
Description
Technical field
The present invention relates to a kind of desalinization energy regenerating and boost in pressure integrative machine.
Background technology
Reverse osmotic pressure technology derives from the water purification technology of aerospace field earliest.In the sixties in last century five, by U.S.
Space agency of state gathers multinational scientist, spends billions of, is formed by studying for many years.Most start the limitation due to cost, only
Among this high cost industrial of sewage purification for Aero-Space.But with the development of industrial technology and science material, instead
The use cost of infiltration technology is gradually reduced, and application field has been generalized in extensive desalinization, and as desalinization
The mainstream technology in field.
Reverse osmotic pressure desalinization is the technology that a kind of utilization principle of reverse osmosis prepares fresh water from seawater, by pressure differential
Isolation technics, by semipermeable membrane side apply pressure, drive the aqueous solvent in seawater to produce fresh water by pellicle
Resource.SWRO System Working Principles such as Fig. 1.Because simple in construction, reliable, without thermal source, as the main flow skill in desalinization
Art, occupies the increasing market share, and the trend grown steadily year by year is presented.In reverse osmosis seawater desalination system, counter-infiltration
Membrane module, high-pressure pump, energy recycle device and boost in pressure pump are the key devices of Membrane seawater desalination technology.Reverse osmosis process
The reduction of energy consumption is the key factor that reverse osmosis technology is able to fast development, and wherein liquid pressure energy recovery technology can be using instead
Strong brine pressure under permeable membrane retention is pressurizeed for fresh seawater, and total system energy consumption is reduced by reducing main sea water pump energy consumption.
Therefore liquid energy reclaims new technology and the research and development of device turns into the hot issue of reverse osmotic pressure field of seawater desalination.
Energy recycle device realizes device as liquid energy recovery technology, has become reverse osmotic pressure desalinization system
Unite necessary part, mostly using rotary pressure energy exchanger (RPE) in current SWRO systems.Rotary pressure can be handed over
Rotor cylinder in parallel operation is along the circumferential direction uniformly provided with several insertion ducts.Rotor cylinder is embedded in housing, and determines with two ends
Sub- precision-fit is installed, and lubrication is realized full of high-pressure fluid in circular gap and end clearance, and total is similar to fluid
Lubricating power bearing, the almost presence without frictional resistance.In SWRO systems, the course of work of rotary pressure energy exchanger
As shown in Figures 2 and 3.
High-pressure pump and boost in pressure pump are the key components in reverse osmotic pressure seawater desalination system, are mainly completed to new
Fresh seawater lift pressure so that fresh seawater can carry out film process of osmosis by membrane module module.It is high in current SWRO systems
Press pump mainly takes centrifugal pump, and boost in pressure pump takes centrifugal pump, vane pump and axial plunger pump.Wherein axial plunger pump
(Axial Piston Pump, APP) meets boost in pressure very much as small displacement, low leakage and the high-pressure pump with high leakproofness
The work requirements of pump, so selection axial plunger pump is used as boost in pressure pump.Plunger pump is to make past in cylinder bore by plunger
The volume change produced when moving again is absorbed water and pressed water.Because sky is all periphery in plunger and cylinder body, easy
Coordinate to high-precision, good seal performance, work the volumetric efficiency and gross efficiency for remaining to keep higher under high pressure.Inclined disc type axle
It is to use to match somebody with somebody water pond water distribution to plunger pump, the axial plunger pump of cylinder body rotation, plunger is against on swash plate face, the axial direction of swash plate end face
Distribution causes the movement of plunger, and plunger is rotated together with cylinder body, and has relative to cylinder body axial movement.Axial plunger pump is used
The optimal water film thickness design of hydraulic static balance, makes cylinder body and with being operated between water pond under neat liquid friction, with knot
Structure is simple, small volume, low noise, efficiency high, long lifespan and have the advantages that suction capacity.Fig. 4, Fig. 5 and Fig. 6 are inclined disc type axial direction
Plunger pump fundamental diagram.
The content of the invention
It is an object of the present invention to provide a kind of energy recycle device, high-pressure pump and pressure to reverse osmosis seawater desalination system
The integrated machine device of the big equipment of power elevator pump three.All-in-one is the single rotor coaxial structure of multichannel two-chamber, and sea can be achieved
The function of three big critical equipments (energy recycle device, high-pressure pump and boost in pressure pump) in water desalination system so that space-consuming
Smaller, no intermediate connection tube road and control valve drastically reduce the area the dynamic and static sealing part of high pressure, substantially improve system
Security reliability.
The present invention above-mentioned purpose can adopt the following technical scheme that to realize, desalinization energy regenerating and boost in pressure one
Body machine device, it includes:
Barrel housing, it can be fixedly mounted with stator, and lateral opening hole is connected as high-low pressure with rotor cylinder radial direction duct
The import and export of concentrated seawater.Barrel housing completes to position with rotor cylinder by rotor bearing, while rotor bearing realizes sleeve shell
Sealing and lubrication between body and rotor cylinder;
Main shaft, its rotational support is driven in stator by external motor;
Rotor cylinder with multiple plunger holes, it is incorporated on main shaft, drives it to be rotated around active axis by main shaft, and
And the side end face of rotor cylinder one coordinates with duct gland;
Swash plate, it is fixedly mounted in barrel housing, and multiple plunger hole axles of its end face and rotor cylinder are oppositely arranged, with
Piston shoes in plunger assembly, which are slided, to be set;
Multiple plunger assemblies, plunger assembly includes piston shoes, plunger rod and plunger, piston shoes and the plunger ball pivot on plunger rod
Connect, its plunger at one end is slidably arranged in the plunger hole of rotor cylinder, piston shoes one end is slidably arranged on swash plate end face;
In the present invention, described rotor cylinder is the single rotor structure of multichannel two-chamber, can be handed over rotary pressure
The dual-use function of parallel operation rotor and cam-type axial piston pump cylinder body.It is double in plunger hole as main shaft drives rotor cylinder rotates
High-low pressure fluid in chamber being capable of positive displacement acting progress pressure energy exchange, completion energy recovery function;Due to the gradient of swash plate
Circumferentially rotated with rotor cylinder, piston reciprocation motion carries out acting pressurization to low-pressure fluid, completes boost in pressure function.
In the present invention, line slip setting is entered in described rotor cylinder plunger duct with plunger assembly, and plunger duct is embedded
Graphite cannula ensures microgap sealing and the lubricated when plunger is slided.Graphite cannula processing mode is as follows:By external diameter finished inside diameter
Rough machined graphite cannula and plunger hole are interference fitted, and it is embedded in plunger duct, after retrofit is carried out to graphite cannula internal diameter,
So that graphite cannula internal diameter realizes that microgap is sealed with plunger, such process ensure that the stability of graphite cannula.
In the present invention, described plunger assembly is specially ball-and-socket hinge style plunger assembly, and it includes piston shoes, plunger connecting rod and post
Plug, is provided with ball-and-socket on piston shoes, and the bulb of plunger rod is arranged in piston shoes ball-and-socket to be connected with piston shoes formation ball pivot, and the other end passes through
Screw thread is connected with plunger, tells that plunger is slideably positioned in plunger hole, is provided with the middle of the plunger connecting rod and plunger and is communicated in post
The pore of consent, so as to introduce the bulb at fluid lubrication slipper socket end.
In the present invention, as a kind of optional embodiment, the plunger connecting rod and plunger are divided into two parts, pass through screw thread
Connection, realizes all-in-one processing and manufacturing and installs, plunger connecting rod and plunger enter plunger hole from rotor cylinder both sides end face respectively
Road, both connect to complete the installation of plunger assembly in plunger duct internal whorl.
In the present invention, as a kind of optional embodiment, the plunger connecting rod bulb is real by drying dress with piston shoes ball-and-socket
Existing ball pivot connection, carrying out heating to piston shoes makes its dilatancy so that plunger connecting rod bulb inserts piston shoes ball-and-socket, after piston shoes are entered
Row cooling, plunger connecting rod bulb can realize that stable ball pivot is connected with piston shoes ball-and-socket.
In the present invention, described piston shoes end face enters line slip setting with swash plate end face, is designed by water shutoff band and microgap
Sealing is realized lubrication and sealed.Piston shoes end face inner ring opens up groove, for storing the fluid for coming from plunger base aerial drainage, piston shoes
End face outer shroud opens up water shutoff band and sealed with swash plate end face microgap, and the fluid in groove constantly to water shutoff band radial drainage, is realized
To the lubrication of swash plate and piston shoes end face.
In the present invention, the pore for being communicated in plunger cavity is provided with the middle of described plunger connecting rod and plunger, plunger can be introduced
The bulb and piston shoes end face at the former seawater fluid lubrication slipper socket end of bottom chamber, connect friction to ball pivot respectively and end face are slided
Friction is lubricated the effect of realizing lubrication drag reduction, by controlling pore length and aperture being capable of effective controlled discharge pressure.
Using the present invention said structure, desalinization energy regenerating and boost in pressure integrative machine of the invention,
During main shaft rotor driven cylinder body is continuously rotated, when some plunger hole two-chamber is respectively communicated with concentrated seawater high-pressure inlet and Yuan Hai
Water high-pressure outlet, now corresponds to plunger cavity and introduces high pressure concentrated seawater, high pressure concentrated seawater does work to the former seawater pressurization of low pressure, realizes stream
Pressure energy is exchanged between body, and the former seawater after pressurization flows out from outlet;Plunger hole two-chamber connects former seawater low pressure inlet and dense afterwards
Seawater low tension outlet, now corresponds to plunger cavity and introduces the former seawater of low pressure, other side plunger cavity is discharged done work to external pressurized after
Low pressure concentrated seawater, is full of the former seawater of low pressure of processing to be pressurised this moment in plunger cavity.Continuously being rotated by rotor cylinder can be real
This existing cyclic process, high pressure concentrated seawater constantly carries out pressure energy with the former seawater of low pressure and exchanged, and is the integrative machine above
Energy recovery module working mechanism.
Using the present invention said structure, desalinization energy regenerating and boost in pressure integrative machine of the invention,
In the continuous rotation process of main shaft rotor driven cylinder body, plunger assembly is rotated about the axis, due to the gradient of swash plate, and plunger assembly is turning
It is reciprocating in the plunger hole of sub- cylinder body, formed plunger hole in Volume Changes, and rotor cylinder rear end valve plate and
Import and export under the cooperation of stator successively with the former seawater of low pressure are connected, and realize the process of suction seawater and compression seawater, Ye Jishi
The conversion for rotating mechanical energy and hydraulic energy is showed.It is the boost in pressure module working mechanism of the integrative machine above.
Using the said structure of the present invention, desalinization energy regenerating and boost in pressure integrative machine of the invention can
The energy recovery function and the boost in pressure function to the former seawater of low pressure to high pressure concentrated seawater are realized simultaneously, it is light in counter-infiltration seawater
In change system, the integrated and integration of energy regenerating and boost in pressure module is realized.
The desalinization energy regenerating and boost in pressure integrative machine of the present invention can be exchanged with existing rotary pressure
Device, high-pressure pump, boost in pressure pump or energy recycle device are compared with the integrating device of boost in pressure pump, are had the effect that:
A), compared with rotary pressure energy exchanger, high-pressure pump and boost in pressure pump:Functionally realize desalinization
Three big key equipments (energy recycle device, high-pressure pump and boost in pressure pump) is integrated in system, wherein cam-type axial piston
Pump module completes boost in pressure and high voltage functionality, and rotary pressure energy exchanger module completes energy recovery function, microgap sealing
Leakage and the sealing problem of the fusion of the first two module and generation are solved with mechanical seal module, the miniaturization of SWRO systems has been adapted to
With integrated demand.Specific advantage is as follows:
1) space-consuming is smaller, effectively realizes integrated, greatly reduces the space cost of SWRO systems.
2) integrative machine merge existing rotary pressure energy exchanger and cam-type axial piston pump technical advantage and
Structural similarity, realizes the single rotor coaxial structure of complete machine multichannel two-chamber, makes circumferentially distributed rotor duct plunger both sides
Cavity all turns into runner, adds rotor space utilization ratio.
3) microgap sealing is carried out using graphite cannula between rotor cylinder duct and plunger, on the basis of control leakage rate, drop
Low plunger slides suffered resistance, it is ensured that the balance of sealing and lubrication.
4) in view of the labyrinth of the swash plate side of all-in-one, to ensure the feasibility of processing, design rotor cylinder is radially
Passage, imports and exports as concentrated seawater in rotor cylinder duct, optimizes rotor structure.The design is from rotor cylinder periphery perforate
Processing, reduces difficulty of processing.
5) the water shutoff band design of swash plate and piston shoes end face, is realized and end face is moistened using plunger base intracavitary former seawater
It is sliding.Both the lubrication of swash plate and piston shoes end face had been ensure that, sliding-frictional resistance is reduced, the former seawater of plunger base intracavitary is in turn ensure that
Sealing, control leakage rate.
Although 6) energy recovery module, using rotary pressure energy exchanger arrangement, is the increase in work in integrative machine
Plug, effectively reduces liquid fluid in rotor pipeline and accumulates blending rate.
7) without intermediate connection tube road and control valve, the dynamic and static sealing part of high pressure is drastically reduce the area, SWRO systems are reduced
Moving component in system, substantially improves the security reliability of system.
B) compared with energy recycle device with the integrating device of boost in pressure pump, it is further integrated on space and runner,
It is made more thorough in terms of low duty, small size.Traditional integrating device is by the energy regenerating being connected on same runner dress
Put integrated with the progress of boost in pressure pump, boost in pressure pump is arranged on energy recovery module in the form of vane pump or plunger pump
The former seawer outlet of high pressure complete further boost in pressure.The integrative machine, realizes the energy being connected in parallel on different runners
The integrated of retracting device, boost in pressure pump and high-pressure pump is measured, wherein energy recovery module takes same set of with boost in pressure module
Structure, realizes the integrated version of higher order.Meanwhile, integrative machine merge existing rotary pressure energy exchanger with it is inclined disc type
The technical advantage and structural similarity of axial plunger pump, realize the single rotor coaxial structure of complete machine multichannel two-chamber, make circumference
The rotor duct plunger both sides cavity of distribution all turns into runner, adds rotor space utilization ratio;Reduce SWRO systems
Connecting line and control valve, drastically reduce the area the dynamic and static sealing part of high pressure, reduce the moving component in SWRO systems,
Substantially improve the security reliability of system.
Brief description of the drawings
Fig. 1 is existing rotary pressure energy exchanger arrangement schematic diagram;
Fig. 2 is Fig. 1 A-A sectional views;
Fig. 3 is Fig. 1 B-B sectional views;
Fig. 4 is existing cam-type axial piston pump structural representation;
Fig. 5 is Fig. 4 C-C sectional views;
Fig. 6 is Fig. 4 D-D sectional views;
Fig. 7 is existing SWRO system schematics;
Fig. 8 is the SWRO system schematics equipped with integrative machine of the invention;
Fig. 9 is structure principle chart of the invention;
Figure 10 is Fig. 9 E-E sectional views;
Figure 11 is Fig. 9 F-F sectional views;
Figure 12 is main structure diagram of the invention;
Figure 13 is Figure 12 G-G sectional views;
Figure 14 is the right view of stator 13;
Figure 15 is the assembling schematic diagram of plunger assembly (2,3,6) and rotor cylinder 7;
Figure 16 is the lubricating end surface design diagram of plunger assembly (2,3,6) piston shoes 2.
Main figure number explanation:
1-barrel housing, 2-piston shoes, 3-plunger connecting rod, 4-plunger connecting rod graphite cannula, 5-rotor bearing, 6-post
Plug, 7-rotor cylinder, 8-plunger graphite cannula, the 9-the first O-ring, 10-duct gland, 11-valve plate, 12-the second is O-shaped
Circle, 13-stator, 14-active ring, the 15-the three O-ring, the 16-the four O-ring, 17-compensation ring, 18-stator gland,
19-main shaft, 20-sliding bearing, 21-straight pin, 22-hexagon socket cap head screw, 23-paper washer, 24-cylindrical screw bullet
Spring, 25-spring base, 26-multi-directional ball, 27-return plate, 28-swash plate, 201-water shutoff band, 202-pond groove, 203-sliding
Boots centre bore, 301-plunger rod centre bore, 701-rotor cylinder axial channel, 702-rotor cylinder radial direction duct, a-low
The former seawater inlet of pressure, the former seawater inlet of b-high pressure, d-high-pressure thick seawater inlet, e-low-press thick seawater inlet, M- motors.
Embodiment
Referring to shown in Fig. 7 and Fig. 8, desalinization energy regenerating and boost in pressure integrative machine of the invention are used
SWRO systems, integrative machine instead of high-pressure pump, boost in pressure pump and the big equipment of energy recycle device three.In motor input
Under acting, integrative machine carries out pressure energy recovery to the high pressure concentrated seawater of 60% flow, and then the low pressure to 100% flow is former
Seawater carries out pressurization acting, makes it into reverse osmosis membrane and carries out desalting.Energy regenerating and boost in pressure are completed simultaneously
Dual-use function, instead of traditional three big equipment, realizes the integrated of SWRO systems and simplifies.Integrative machine has four turnover streams
The former sea intake of mouth, respectively low pressure, the former seawer outlet of high pressure, high-pressure thick sea intake and low-press thick seawer outlet, former seawater
It is 5 with concentrated seawater flow-rate ratio:3.
Referring to shown in Fig. 9-11, desalinization energy regenerating and boost in pressure integrative machine of the invention mainly includes:
Main shaft 19;Rotor cylinder 7 with multiple plunger holes, it is incorporated on main shaft 19, and it is driven around master by main shaft 19
Shaft line is rotated, rotor cylinder 7 plunger hole point axial channel 701 and the two parts of radial direction duct 702, axial channel 701 mainly with
Plunger and plunger connecting rod are slided to set and used, and radial direction duct 702 is used as concentrated seawater fluid cavity;Stator 18, it is logical with main shaft 19
Cross sliding bearing 20 and realize location and installation, maintain static dynamic;Barrel housing 1, it is realized with rotor cylinder 7 by rotor bearing 5
Location and installation, is maintained static dynamic;The plunger duct of plunger 6 and plunger connecting rod 3 and rotor cylinder 7, which is slided, to be set;Swash plate 28 is with sliding
Boots 2, which are slided, to be set, and it is installed with barrel housing 1 by screw thread, is maintained static dynamic;Duct gland 10 is inlayed with rotor cylinder 7
Embedding to install, rotor cylinder axial channel 701 assembles the first O-ring 9 with the junction of duct gland 10;Valve plate 11 and the end of stator 18
Face connection is installed, and sets perforate to be positioned by straight pin 21;Barrel housing 1 passes through hexagon socket head roller screw with stator 18
22 fastenings are installed, and the second O-ring 12 is assembled in junction, and end face junction sets paper washer 23.
Barrel housing 1 sets high-pressure thick sea intake d and low-press thick seawer outlet e sideways, and stator 18 sets the former sea of low pressure
Water inlet a and high-pressure thick seawer outlet b, the inner plunger vestibule of rotor cylinder 7 imports and exports connection in rotary course respectively at four,
Complete the suction and discharge of fluid.
The present invention is as desalinization energy regenerating and boost in pressure integrative machine in use, in energy recovery module
In, motor M drive shafts 19 are rotated, and can be rotated with rotor driven cylinder body 7 around main shaft, the plunger bore in rotor cylinder 7 point
Do not connected with the former sea intake of low pressure, low-press thick seawer outlet and the former sea intake of high-pressure thick seawer outlet, low pressure, plunger bore
Interior concentrated seawater and former seawater interface are with pressure differential axially reciprocating, so as to form plunger bore inner high voltage concentrated seawater to low
The former seawater bulk compression of pressure, realizes high pressure concentrated seawater and the former seawater of low pressure is done work, namely realize high pressure concentrated seawater and low pressure
The pressure energy of former seawater is exchanged, and completes the energy recovery function to high pressure concentrated seawater.
In boost in pressure module, motor M drive shafts 19 are rotated, and can be rotated with rotor driven cylinder body 7 around main shaft, are turned
Sub- cylinder body 7 drives plunger 6 and plunger connecting rod 3 to be rotated around main shaft, and plunger assembly slides relative to swash plate 28 and produces axial reciprocating
Motion, so as to form the volume change of the plunger bore of rotor cylinder 7, realizes the mistake of the former seawater of suction and the former seawater of compression
Journey, namely the conversion between rotation mechanical energy and hydraulic energy is realized, complete the boost in pressure function to the former seawater of low pressure.
In the present invention, interface and the reciprocal fortune of plunger of the concentrated seawater with former seawater in the plunger bore in rotor cylinder 7
Dynamic is synchronous, so the work of the energy recovery module and boost in pressure module of integrative machine is also synchronous.The one
Machine device has merged energy recovery module and boost in pressure module, realizes to high-pressure pump, boost in pressure pump and rotary pressure
Can the combination of exchanger and integrated.
Referring to shown in Figure 12-14, desalinization energy regenerating and boost in pressure integrative machine of the invention can be divided into energy
Measure recycling module, boost in pressure module and high-pressure mechanical seal module.In energy recovery module, rotor cylinder 7, barrel housing
1st, main shaft 19, duct gland 10, valve plate 11 and stator 13 constitute complete rotary pressure energy exchanger arrangement, rotor cylinder
7 each duct is connected with four import and export respectively in rotary course, completes to press between liquid by positive displacement acting principle
The exchange of power energy.In boost in pressure module, rotor cylinder 7, plunger 6, plunger connecting rod 3, piston shoes 2, swash plate 28, main shaft 19, hole
Road gland 10, valve plate 11 and stator 13 constitute complete inclined disc type rotary plunger pump configuration, and each plunger duct is being rotated through
Connected respectively with water suction window and draining window in journey, moved by piston reciprocation and complete the pressurization acting to the former seawater of low pressure.
In high-pressure mechanical seal module, main shaft 19, stator 13, stator gland 18, active ring 14, compensation ring 17, the 3rd O-ring 15 and the
Four O-rings 16 constitute high-pressure mechanical seal structure, realize main shaft 19 and the installation place of stator 13 of lower turn of high pressure working environment
Reliable sealing.
Shown in Figure 12, duct is divided into axial channel 701 and radial direction duct 702 in rotor cylinder 7.Wherein rotor cylinder
Axial channel 701 is circumferential to be uniformly distributed, and number is 7, is slided and is set with plunger rod 3 and plunger 6;Rotor cylinder radial direction duct 702
Connected in the side of rotor cylinder 7 with the lateral aperture on graphite cannula 4 and barrel housing 1, constitute the flow passage chamber of high-low pressure concentrated seawater,
Wherein the lateral opening hole of barrel housing 1 is imported and exported for concentrated seawater.Rotor cylinder axial channel 701, duct gland 10, valve plate
11 and stator 13 constitute the flow passage chamber of the former seawater of high-low pressure, the wherein insertion of duct gland 10 rotor cylinder 7, by rotor cylinder 7
Circular flow channel be adjusted to fan-shaped annulus runner, compressed and installed with rotor cylinder 7 by right side, rotor cylinder 7 and duct gland 10
Interior runner is around main axis.Valve plate 11, stator 13 and the location and installation of main shaft 19, valve plate 11 are positioned at the shaft shoulder of main shaft 17,
Valve plate 11 and stator 13 are coordinated by bearing and main shaft, effectively reduce the frictional dissipation in rotation process, valve plate 11 with
Runner in stator 13 is fixed.The inner flow passage of stator 13 connects the side of stator 13 by radial aperture, and the side of stator 13 is opened
Mouth is imported and exported for former seawater.When device is rotated, the runner of the part of rotor cylinder 7 is imported and exported with the seawater of the part of stator 13 and interacted
Connection, completes the exchange of concentrated seawater and former seawater, realizes that the pressure energy of seawater is exchanged.
Shown in Figure 13, the end face of piston shoes 2 enters line slip setting with the end face of swash plate 28, to ensure that piston shoes 2 do not depart from swash plate
28 end faces, close contact and extruding of the end face of piston shoes 2 to the end face of swash plate 28 are ensured by return plate 27.In integrative machine,
Set cylindrically coiled spring 24, spring base 25 and multi-directional ball 26 to form uniform extruding force to the face of return plate end 27, realize backhaul
Extruding of the disk to the shoulder of piston shoes 2.When wherein cylindrically coiled spring 24 ensure that pump startup, rotor cylinder 7 is pressed on flow
On disk 11 and stator 13, it is 300~500N typically to take spring pre-tightening force.The hole of certain internal diameter is opened up inside plunger 6, mitigates post
Fill in plunger in quality, the reduction course of work and move back and forth generation inertia.Diameter d is opened up inside plunger connecting rod 30=2mm center
Pore leads directly to plunger connecting rod bulb end, so as to introduce at the button-head hinge of plunger base fluid lubrication plunger connecting rod 3 and the end face of piston shoes 2
Section junction.
6 circular holes are uniformly distributed referring to shown in Figure 13-14, stator 13 is circumferential, circular hole can pass through screw rod herein.Barrel housing
1st, stator 13 and stator gland 18 are connected by hexagon socket cap head screw 22, and wherein internal thread is arranged on the right side of barrel housing 1
End face, hexagon socket cap head screw 22 is realized with barrel housing 1 through stator gland 18 and stator 13 and is threadedly coupled so that sleeve
Housing 1, stator 13 and stator gland 18 are fixedly mounted, and form the firm housing installed of integrative machine.
Shown in Figure 13, active ring 14, compensation ring 17, the 3rd O-ring 15 and the 4th O-ring 16 constitute mechanical seal mould
Block.Wherein the selection of mechanical seal active ring 14 1Cr13 built-up welding cobalt chromium tungsten, belongs to Hardmetal materials, compensation ring selection leaching phenolic aldehyde
Resin graphite, it is adaptable to the working media of pure water and seawater.
Shown in Figure 15, the plunger duct of plunger connecting rod 3 and plunger 6 and rotor cylinder 7 carries out slip setting, is sliding
Place sets plunger connecting rod graphite cannula 4 and 8 lubrications of plunger graphite cannula, while by controlling plunger (3 or 6) and graphite cannula
Under the gap of (4 or 8), leakage rate can be controlled, it is ensured that sealing effectiveness.If the plunger of the rotor cylinder 7 of the integrative machine
Hole number is 7, rotating speed nb=1500rpm, theoretical original seawater flow Qlb=5m3/ h, diameter of plunger d is can be calculated by designZ=
21.88mm, △ Pmax=5.9MPa, in the feelings of control plunger 6 and the gap precision h=0.01mm of rotor cylinder axial channel 701
Under condition, total leakage rate q=4.32ml/s that plunger connecting rod 3 and plunger connecting rod graphite cannula 4 are produced, plunger 6 and plunger graphite cannula 8 are slided
The total leakage rate q=1.46ml/s produced at dynamic setting, then the maximum leakage rate occurred at two:
Leakage rate according to obtained by being calculated design is far below working flow, so the sealing of graphite cannula microgap can be effectively ensured
The reliability of integrated machine.In real work engineering, the both sides seawater pressure difference △ P of plunger 6<5.9MPa, therefore actual leakage
Amount is less than calculating leakage rate q.
It is shown in Figure 16, pond groove 202 is set in the middle of the end face of piston shoes 2, and periphery sets water shutoff band 201.Warp can be introduced
The former seawater that centre bore 301, the piston shoes centre bore 203 of plunger connecting rod 3 go out from the bottom drain of plunger 6, is filled in pond groove 202
In.Former seawater in pond groove 202 enters the thick moisture films of 0.01~0.03mm of the formation of water shutoff band 201, plays lubrication, reduces and slide
The friction of the end face of boots 2 in the course of the work with the end face of swash plate 28.Dash area is water shutoff band 201 in Figure 11, water shutoff band 201 with tiltedly
The face of disk 28 keeps there is moisture film in small gap, gap.Under conditions of control water film thickness δ=0.01mm, it is computed, obtains
Leakage rate to the medial and lateral of water shutoff band 201 is 0.75ml/s, much smaller than working flow.
Claims (10)
1. desalinization energy regenerating and boost in pressure integrative machine, including:
Main shaft(19), its rotational support drives in stator by external motor;
Rotor cylinder with multiple plunger holes(7), it is incorporated into main shaft(19)On, by main shaft(19)It is driven around main shaft(19)
Axis is rotated, and rotor cylinder(7)One side end face is equipped with duct gland(10);
Plunger assembly, its one end, which is articulated with, is close to swash plate(28)Piston shoes(2)In ball-and-socket, the other end is slidably arranged in rotor cylinder
(7)Duct in;
Return plate(27), it passes through spring(24), spring base(25)And multi-directional ball(26)Compress, the piston shoes with plunger assembly(2)
Installed, to piston shoes(2)Compressed;
Swash plate(28), it is fixedly mounted on sleeve, and multiple plunger hole axles of its end face and rotor cylinder are oppositely arranged, with plunger
Piston shoes in component(2)End face, which is slided, to be set;
Barrel housing(1), itself and rotor cylinder(7)Pass through rotor bearing(5)Location and installation, with stator(13)With stator gland
(18)It is bolted installation;
Stator(13), itself and main shaft(19)Pass through sliding bearing(20)Location and installation, by stator gland(18)Compress;
Stator gland(18), it is compressed by bolt head;
It is characterized in that:
Described rotor cylinder(7)Axial channel is set(701)With radial direction duct(702), axial channel(701)Along rotor cylinder
(7)Axial aperture insertion both sides end face, radial direction duct(702)From the side radial aperture connection axial channel of rotor cylinder 7
(701), axial channel(701)With radial direction duct(702)It is in T shape, there are three outlets, respectively at two ends and side, ring
It is evenly distributed on rotor cylinder(7)It is internal;Described rotor cylinder(7)Axial channel(701)With plunger(6)And plunger connecting rod
(3)Slide and set, axial channel(701)The aperture of one side end face and plunger connecting rod(3)Slide and set;Described rotor cylinder
(7)Radial direction duct(702)And axial channel(701)Used, entered respectively with four in rotary course as flow passage chamber
Outlet;Described rotor bearing(5)Respectively with barrel housing(1)And rotor cylinder(7)Shaft shoulder location and installation, rotor bearing
(5)Ring opens up flow window passage, with rotor cylinder(7)Lateral aperture is connected.
2. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Rotor cylinder(7)Axial channel(701)Embedded plunger connecting rod graphite cannula(4), plunger graphite cannula(8), graphite cannula and rotor cylinder
Body(7)Axial hole is interference fitted;Plunger connecting rod graphite cannula(4)With plunger connecting rod(3)Gap coordinates;Plunger graphite cannula(8)With post
Plug(6)Gap coordinates.
3. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Plunger assembly is divided into plunger(6), plunger connecting rod(3)And piston shoes(2), plunger(6)With plunger connecting rod(3)It is connected through a screw thread, post
Fill in connecting rod(3)With piston shoes(2)Connected by ball pivot.
4. desalinization energy regenerating as claimed in claim 3 and boost in pressure integrative machine, it is characterised in that described
Plunger(6)And plunger connecting rod(3)External diameter ratio is 1.58, it is ensured that under identical stroke, and both sides flow passage chamber Volume Changes are 5:3.
5. desalinization energy regenerating as claimed in claim 3 and boost in pressure integrative machine, it is characterised in that described
Piston shoes(2)Pond groove is provided with the inside of end face(201), outside is provided with water shutoff band(202), centre bore can be passed through(203)Introduce plunger
(6)The former seawater that bottom drain comes.
6. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Swash plate(28)It is connected through a screw thread and is fixedly mounted on barrel housing(1)On, do not rotate.
7. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Barrel housing(1)Bottom is provided with screw thread and swash plate(28)Whorl of base is connected, and hole and rotor bearing are opened up sideways(5)Flow window with
And rotor cylinder(7)Lateral aperture is connected, and is imported and exported as concentrated seawater, and top end face is provided with equally distributed 6 screwed holes.
8. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Rotor cylinder(7)One side end face and duct gland(10)Install, duct gland(10)Circular duct is adjusted to fan-shaped annulus hole
Road.
9. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Stator(13)6 through holes are uniformly distributed, bolt screw rod is may pass through;Stator(13)Location and installation is in main shaft(19)Shoulder, passes through cunning
Dynamic bearing(20)Realize and install.
10. desalinization energy regenerating as claimed in claim 1 and boost in pressure integrative machine, it is characterised in that described
Bolt pass through stator gland(18), stator(13)With barrel housing(1)End-face helical is connected, by stator gland(18)And stator
(13)It is pressed in sleeve end face, constitutes the device shell structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710299117.8A CN106988977A (en) | 2017-04-30 | 2017-04-30 | Desalinization energy regenerating and boost in pressure integrative machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201710299117.8A CN106988977A (en) | 2017-04-30 | 2017-04-30 | Desalinization energy regenerating and boost in pressure integrative machine |
Publications (1)
Publication Number | Publication Date |
---|---|
CN106988977A true CN106988977A (en) | 2017-07-28 |
Family
ID=59417393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201710299117.8A Pending CN106988977A (en) | 2017-04-30 | 2017-04-30 | Desalinization energy regenerating and boost in pressure integrative machine |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN106988977A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108238664A (en) * | 2017-12-30 | 2018-07-03 | 北京工业大学 | Integral type low pulse sea water desalination energy regenerating supercharging device |
CN109550399A (en) * | 2018-12-10 | 2019-04-02 | 中国矿业大学 | A kind of high throughput rotator type energy recycle device |
WO2020107812A1 (en) * | 2018-11-26 | 2020-06-04 | 西安交通大学 | Pressure energy recovery-based flow rate doubling system and method |
CN111237155A (en) * | 2020-02-28 | 2020-06-05 | 燕山大学 | Through-shaft axial piston pump capable of realizing energy recovery |
CN111573784A (en) * | 2020-06-15 | 2020-08-25 | 乾通环境科技(苏州)有限公司 | Energy recovery device |
CN111810373A (en) * | 2020-07-14 | 2020-10-23 | 河南科技大学 | Water hydraulic plunger pump with circulative cooling function |
WO2021077350A1 (en) * | 2019-10-22 | 2021-04-29 | 朱荣辉 | Rotary piston-type high-pressure pump with energy recovery function |
CN112761920A (en) * | 2021-01-18 | 2021-05-07 | 燕山大学 | Motor pump with circulation self-cooling runner |
CN114856992A (en) * | 2022-04-13 | 2022-08-05 | 德帕姆(杭州)泵业科技有限公司 | Rotary plunger pump |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101821504A (en) * | 2007-10-09 | 2010-09-01 | 丹佛斯公司 | Hydraulic axial piston machine |
US20110006006A1 (en) * | 2008-01-15 | 2011-01-13 | Macharg John P | Combined Axial Piston Liquid Pump and Energy Recovery Pressure Exchanger |
CN201714609U (en) * | 2010-07-20 | 2011-01-19 | 国家海洋局天津海水淡化与综合利用研究所 | Plunger type energy recovery high-pressure pump for small sea water desalination device |
KR20110104163A (en) * | 2010-03-16 | 2011-09-22 | 한국기계연구원 | Pressure recovery mechanism using hydrostatic power transmission |
WO2013041547A1 (en) * | 2011-09-21 | 2013-03-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Active pressure intensifier, reverse osmosis system and use thereof |
WO2013072533A1 (en) * | 2011-11-18 | 2013-05-23 | Bolsaplast, S.L. | Axial piston pump that harnesses energy |
CN105526051A (en) * | 2016-01-19 | 2016-04-27 | 沃尔科技有限公司 | High-pressure plunger pump with energy recycling function |
CN106286183A (en) * | 2016-10-10 | 2017-01-04 | 燕山大学 | The inclined disc type axial plunger displacement pump alive that fluid energy reclaims can be realized |
CN206988036U (en) * | 2017-04-30 | 2018-02-09 | 浙江大学 | A kind of desalinization energy regenerating and boost in pressure integrative machine |
-
2017
- 2017-04-30 CN CN201710299117.8A patent/CN106988977A/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101821504A (en) * | 2007-10-09 | 2010-09-01 | 丹佛斯公司 | Hydraulic axial piston machine |
US20110006006A1 (en) * | 2008-01-15 | 2011-01-13 | Macharg John P | Combined Axial Piston Liquid Pump and Energy Recovery Pressure Exchanger |
KR20110104163A (en) * | 2010-03-16 | 2011-09-22 | 한국기계연구원 | Pressure recovery mechanism using hydrostatic power transmission |
CN201714609U (en) * | 2010-07-20 | 2011-01-19 | 国家海洋局天津海水淡化与综合利用研究所 | Plunger type energy recovery high-pressure pump for small sea water desalination device |
WO2013041547A1 (en) * | 2011-09-21 | 2013-03-28 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Active pressure intensifier, reverse osmosis system and use thereof |
WO2013072533A1 (en) * | 2011-11-18 | 2013-05-23 | Bolsaplast, S.L. | Axial piston pump that harnesses energy |
CN105526051A (en) * | 2016-01-19 | 2016-04-27 | 沃尔科技有限公司 | High-pressure plunger pump with energy recycling function |
CN106286183A (en) * | 2016-10-10 | 2017-01-04 | 燕山大学 | The inclined disc type axial plunger displacement pump alive that fluid energy reclaims can be realized |
CN206988036U (en) * | 2017-04-30 | 2018-02-09 | 浙江大学 | A kind of desalinization energy regenerating and boost in pressure integrative machine |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108238664A (en) * | 2017-12-30 | 2018-07-03 | 北京工业大学 | Integral type low pulse sea water desalination energy regenerating supercharging device |
WO2020107812A1 (en) * | 2018-11-26 | 2020-06-04 | 西安交通大学 | Pressure energy recovery-based flow rate doubling system and method |
CN109550399A (en) * | 2018-12-10 | 2019-04-02 | 中国矿业大学 | A kind of high throughput rotator type energy recycle device |
CN109550399B (en) * | 2018-12-10 | 2023-09-19 | 中国矿业大学 | High-throughput rotor type energy recovery device |
WO2021077350A1 (en) * | 2019-10-22 | 2021-04-29 | 朱荣辉 | Rotary piston-type high-pressure pump with energy recovery function |
CN111237155A (en) * | 2020-02-28 | 2020-06-05 | 燕山大学 | Through-shaft axial piston pump capable of realizing energy recovery |
CN111573784A (en) * | 2020-06-15 | 2020-08-25 | 乾通环境科技(苏州)有限公司 | Energy recovery device |
CN111810373A (en) * | 2020-07-14 | 2020-10-23 | 河南科技大学 | Water hydraulic plunger pump with circulative cooling function |
CN112761920A (en) * | 2021-01-18 | 2021-05-07 | 燕山大学 | Motor pump with circulation self-cooling runner |
CN114856992A (en) * | 2022-04-13 | 2022-08-05 | 德帕姆(杭州)泵业科技有限公司 | Rotary plunger pump |
CN114856992B (en) * | 2022-04-13 | 2023-08-22 | 德帕姆(杭州)泵业科技有限公司 | Rotary plunger pump |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN106988977A (en) | Desalinization energy regenerating and boost in pressure integrative machine | |
CN206988036U (en) | A kind of desalinization energy regenerating and boost in pressure integrative machine | |
CN110617190B (en) | Rotary piston type high-pressure pump with energy recovery function | |
CN103184990B (en) | Oblique plunger type pure water hydraulic swash plate pump | |
CN108238664B (en) | Integrated low-pulsation seawater desalination energy recovery supercharging device | |
CN106594009B (en) | Outer driving rotator type energy recycle device | |
CN206770147U (en) | Light-weight electric hydraulic planger pump | |
CN108757373A (en) | A kind of two inclined plate plunger type motor pump | |
CN106321391A (en) | Closed variable plunger pump | |
CN211082162U (en) | Rotary piston type high-pressure pump with energy recovery function | |
CN206159010U (en) | Cam rotor pump | |
CN208578680U (en) | A kind of synchronous rotary flow Small Plunger Pump | |
CN204805099U (en) | Bulb formula helical blade through -flow pump | |
CN201679717U (en) | Translational ring rotor pump | |
CN105889008A (en) | Inner curved plane cam rolling bearing radial plunger pump | |
CN203383967U (en) | Small wheel hub body paddle operation cylinder moving type device of bulb through-flow unit | |
CN103671087A (en) | Pumps with revolving piston structure, related products and part of embodiments | |
CN208918954U (en) | A kind of spiral swing hydranlic pressure jar | |
CN209228553U (en) | A kind of three hydraulic fluid port axis flow plunger type variable capacity pump of two inclined plate | |
CN113007062A (en) | Two-dimensional plunger motor pump of spiral oil distribution groove | |
CN206738095U (en) | A kind of dynamic shell type multiaction water hydraulic radial plunger pump | |
CN208024514U (en) | A kind of symmetrical shaft type quantifies axial plunger pump | |
CN206280242U (en) | A kind of high-accuracy quantitative fluid supercharging vane type electric transmission assembly apparatus | |
CN203835462U (en) | Planet screw type machine | |
CN106988958B (en) | Low-speed big axial-piston hydraulic motor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170728 |
|
WD01 | Invention patent application deemed withdrawn after publication |