CN102305203A - Linear motor-driven plunger pump - Google Patents
Linear motor-driven plunger pump Download PDFInfo
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- CN102305203A CN102305203A CN201110233902A CN201110233902A CN102305203A CN 102305203 A CN102305203 A CN 102305203A CN 201110233902 A CN201110233902 A CN 201110233902A CN 201110233902 A CN201110233902 A CN 201110233902A CN 102305203 A CN102305203 A CN 102305203A
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Abstract
The invention relates to a linear motor-driven plunger pump. The mechanical part of the plunger pump comprises a cylinder body I, a cylinder body II, flow distribution valves, an in-sucking communication pipe, out-pressing communication pipes, compacting flanges, plunger rods, linear motor stators, linear motor rotors and guide rails; and the electric part mainly consists of linear motors, a controller, drivers and a position feedback device. The linear motor-driven plunger pump is characterized in that a group of coil-type stators drive a permanent magnet rotor in a combinational way, thus realizing high thrust output of the linear motors. Each flat-type linear motor drives two plungers at the two ends of one plunger rod, and while the double-action plunger rod reciprocates, one end of the double-action plunger rod sucks water and at the same time the other end of the double-action plunger rod presses water. The two cylinders realizes the effective communication between the water sucking loop and water pressing loop of the plunger pump by means of the in-sucking communication pipe and the two out-pressing communication pipes. Each plunger hole is communicated with a flow distribution valve consisting of an in-sucking valve and an out-pressing valve. The electric part controls the out-of-phase movement of the linear motors, thus ensuring the stable combinational flow output of the pump. The linear motor-driven plunger pump disclosed by the invention has the advantages of less mechanical transmission links and high system efficiency and reliability.
Description
Technical field
The present invention relates to a kind of linear motor driving plunger pump, belong to the pump class, be applicable to that sea water and fresh water, mineral wet goods workmanship do in the hydraulic system of medium, have wide practical use in industries such as deep-sea exploration, petroleum production, food processing, boats and ships naval vessels.
Technical background
Traditional hydraulic transmission with mineral oil as working medium; But that mineral oil exists is inflammable, leakage and exhaust emission environment, for a long time use easy oxidation and rotten, anti-shear ability is poor, viscosity is subjected to that oily temperature influences greatly, drawback such as low, the waste disposal difficulty of utilization ratio again; Petering out particularly along with the future petroleum resource; Mineral oil will become scarce resource; Cost can sharply increase, and the development of hydraulic transmission technology will face a severe test.
The water hydraulic drive technology is an environment-friendly and green technology with sustainable development potentiality.The compatibility of 1 environment friendly and product; 2 non-flame propertys and Security; 3 economize on resources with low cost; In addition; Near ocean, rivers, lake; Open water hydraulic system needn't be provided with independent water tank and cooling system; Simplied system structure, saving manufacture cost have very outstanding superiority for ocean environment such as the relatively more nervous submarine of usage space, boats and ships, drilling platforms greatly.
Oil hydraulic pump is the dynamical element of hydraulic system, is the core of whole hydraulic system, and its effect is the pressure ability that the mechanical energy of prime mover is converted to liquid, to whole hydraulic system power is provided.Domestic have the mesohigh sea water and fresh water plunger pump on certain research basis to comprise cam-type axial piston pump, angle type axial piston pump.Axial piston pump has three pairs of crucial friction pair difficult problems to be solved, comprises plunger-cylinder body, cylinder body-thrust plate, swash plate-piston shoes.Just because of failing to resolve this three big friction pair difficult problem, existing water pressure plunger pump volumetric efficiency and reliability are on the low side.
The tradition Variable plunger pump is realized variable through regulating swashplate angle or motor speed.The servo-control system that linear motor plunger pump is formed through linear electric motor, driver, controller, position feedback device etc. is regulated the motor jig frequency, is easy to realize the output of plunger pump variable flow.Secondly, axial piston pump and conventional reciprocating pump all adopt common electric rotating machine, through intermediate conversion mechanism, convert rotatablely moving of motor into straight line motion, drive the plunger to-and-fro motion then.Axial piston pump and conventional reciprocating pump structure have determined its pressure, flow pulsation big, and vibration noise is serious.Linear motor plunger pump adopts linear motor rotor directly to link to each other with plunger, under certain plunger motion planning, can realize that in theory the multi-cylinder combined flow is constant, the vibration noise that slows down pressure, flow pulsation and bring thus.The linear motor driving plunger pump easily is automated control, and tool intelligent fault-tolerance function is even one or two electrical faults through the planning of switching straight line motor movement, can realize that still the plunger pump combined flow is stable.
Conventional flat linear electric motor are made up of a permanent magnet stator, a coil mover, a guide rail and several slide blocks etc., and slide block is connected with mover, and stator drives mover to-and-fro motion on fixed guide.The inertial force that coil mover and slide block etc. consume is bigger, and the linear electric motor normal thrust of demand is bigger.The linear motor driving plunger pump adopts the novel flat linear electric motor.
This plunger pump not only meets the new developing direction of hydraulic transmission, and efficiently solves the many and masty difficult problem of the crucial friction pair of existing water pressure plunger pump.On the other hand, this plunger pump both can adopt sea water and fresh water to make the work medium, also should adopt mineral oil as driving medium.The linear motor driving plunger pump easily is automated control, even one or two electrical faults through the planning of control system switching straight line motor, can guarantee that still the plunger pump output flow is stable, reliability is high, is applicable to the frequency control of motor speed pump control system.Can predict, this patent will have broad application prospects in fluid transmission and Mechatronic Systems.
Summary of the invention
The tradition plunger pump all pass through intermediate conversion mechanism, and rotatablely moving of electric rotating machine converted into the linear reciprocating motion of plunger, and efficient is low, structure is numerous and jumbled, and the stroking mechanism of plunger pump is complicated, is difficult for realizing that automation controls.On the other hand, traditional plunger pump structure has determined plunger pump inevitably to have flow, pressure pulsation, causes the system vibration noise big.The 3rd, domestic pure water plunger pump technique is limited by and many a crucial friction pair difficult problem is failed to be well solved, and demands urgently breaking through.For, solve these technical barriers, explore the new of plunger pump, the present invention proposes a kind of linear motor driving plunger pump, belong to the pump class, adopt sea water and fresh water, mineral wet goods as working medium.
The present invention adopts following technological scheme:
A kind of linear motor driving plunger pump is made up of mechanical part and electric part.Mechanical part mainly comprises cylinder body I 1, suck connecting tube 2, two extrude connecting tube 3, four plunger bushings 5, four plunger rods 6, four guide rails 7, four groups of slide blocks 8, four movers 9, four groups of stators 11, four supported flanges 13, cylinder body I I15 and eight cover flow-distributing valves 12.Electric part comprises a controller, four drivers, four flat linear electric motor, position feedback device etc., and electric part is formed the servo-drive control system again.Cylinder body I 1 and cylinder body I I15 are distributed in the two ends of linear motor driving plunger pump; The suction through hole 17 of cylinder body I 1 sucks at the inboard warp of two cylinder bodies with the suction blind hole 23 of cylinder body I I15 and communicates connecting tube 2, and the extrusion blind hole 18 of two cylinder bodies extrudes through two and links to each other connecting tube 3.Four linear electric motor are symmetric arrangement in twos, and every linear motor rotor 9 is connected with a plunger rod 6 through supported flange 13, cylinder hole 16 embedded plunger bushings formation plunger holes, the plunger at plunger rod 6 two ends and plunger hole Spielpassung.Eight cover flow-distributing valves 12 embed respectively in the corresponding flow-distributing valve mounting hole 22, and flow-distributing valve 12 exterior edge faces are by gland 14 sealings, and every group of plunger-cylinder hole is secondary corresponding with a cover flow-distributing valve 12.Its electric part comprises the driver drives of every linear electric motor by a correspondence; Controller is exported the control signal of certain phase difference to four drivers; After four drivers amplify control signal; Output to corresponding linear motor stator electric 11 more respectively; Thereby drive the mover 9 of corresponding linear electric motor, mover 9 drives plunger rod 6 with certain motion planning linear reciprocating motion through supported flange 13.
Said linear motor driving plunger pump also can contain 2n or 3n platform linear electric motor, n >=1, and every linear electric motor link to each other with a double-action plunger bar, with the to-and-fro motion in the cylinder hole of certain phase difference drive plunger rod, realize pump function between linear electric motor.
If the linear motor driving plunger pump contains 2n platform linear electric motor, 2n double-action plunger bar of 2n platform linear motor driving is with pyramidal wave, and the 90 ° of phase place operations of staggering respectively, makes the velocity composition curve of a plurality of plungers constant, guarantees that the pump combined flow keeps stable.If the linear motor driving plunger pump contains 3n platform linear electric motor, 3n plunger rod of 3n platform linear motor driving is with certain motion planning operation.When n is odd number, between linear electric motor with trapezoidal wave, 120 ° of phase places operation of staggering respectively; When n is even number, between linear electric motor with pyramidal wave, respectively stagger the operation of 90 ° of phase places or with trapezoidal wave, the 120 ° of phase places operations of staggering respectively, guarantee that plunger pump output combined flow reaches constant.
Every flat linear electric motor comprise one group of coil type stator 11, one group of permanent magnet type mover 9, guide rail 7 and two slide blocks 8; Stator 11 all installs and fixes with slide block 8, and guide rail 7 is connected with mover 9, and 8 pairs of guide rails of slide block, 7 movers 9 play guiding and positioning action, makes mover 9 and stator 11 keep certain air gap;
I1 and the cylinder block II15 asymmetric; I1 cylinder piston axially outer end opened a suction port 19, the two opposite surface of the cylinder arranged in two rows of two open holes 16 has four cylinders, cylinder I1 The sides opened four with valve mounting hole 22, with valve mounting holes 22 are opened a suction passage I20, each cylinder bore 16 with a distribution valve mounting hole 22 communicates with valve mounting hole 22 and the suction passage I20 and crescent I21 groove communicates with the suction passage I20 and the suction port 28 and the valve block I1 in the central part of the suction through-holes 17 are connected, the two cylinder I1 blind hole 18 is pressed out through the suction holes 17 of the upper and lower sides, the pressure with a blind hole 18 and the valve mounting hole 22 that is equipped with central pressure relief valve outlet 33 connected to pass; cylinder II15 axially outer end has opened a piston pressure outlet 27, axially inner evenly into two lines two open four cylinder bore 16, each cylinder bore 16 and the corresponding flow valve with mounting hole 22 communicates with valve mounting hole 22 opened between the suction passage II25, suction passage on alveolar II24 II25 through the valve and valve mounting hole 22 communicating the suction channel cylinder II15 II25 and valve inlet valve 28 and is located in the center of the suction cylinder II15 blind holes 23 are connected, the two extrusion cylinder II15 blind hole 18 is located in the suction hole 23 of the upper and lower sides of the blind, and with the mounting hole 22 with valve Central is equipped with pressure relief valve outlet 33 connected to the pass, the extrusion cylinder II15 blind hole 18 through the vertical direction to achieve extrusion channel 26 press out piston pressure blind hole 18 and the outlet 27 is connected; cylinder I1, cylinder II15 a connecting pipe from the suction pressure of 2 and two connecting pipe 3 connected to the suction cylinder to achieve two loops and press out the circuit connected to pass.
The flow-distributing valve of being made up of suction valve 30 and delivery valve 29 12 adopts integral structure (patent applied for; Number of patent application 201110048541.8); The flow-distributing valve exterior edge face is by gland 14 sealings; Suction valve radially duct 32 communicates with suction through hole 17 through suction passage I20; Or through suction passage II25 with suck blind hole 23 and communicate; Flow-distributing valve radially duct 31 is communicated with cylinder hole 16, flow-distributing valve extrude mouthfuls 33 on flow-distributing valve mounting hole 22 opposed in twos and with extrude blind hole 18 and be communicated with.
Adopt trunk piston set clearance automatic compensation device (patent applied for, number of patent application 200910243654.6) to carry out plunger cavity and seal or directly adopt the combined seal ring sealing.
Above-mentioned controller is controlled described many linear electric motor; Make the plunger I4 and the plunger II10 at double-action plunger bar 6 two ends do periodically to-and-fro motion; Four linear motor driving, eight plungers or two linear electric motor, four plungers with pyramidal wave, differ the motion planning operation of 90 ° of phase places, three linear electric motor, six plunger pumps can both be realized the stable combined flow of plunger pump output with trapezoidal wave, the motion planning operation that differs 120 ° of phase places.
Through adjustment linear motor rotor 9 motion plannings, pilot plunger I4 and plunger II10 movement velocity, the Flow-rate adjustment of realization plunger pump; Or adopt switch operating linear electric motor number and linear motor rotor 9 motion plannings to realize Flow-rate adjustment.
When above-mentioned linear motor driving plunger pump, position feedback device detected several linear electric motor and break down, the motion planning of control system automatic switchover linear motor rotor 9 had constant combined flow output to guarantee plunger pump, reduces flow pulsation; Described motion planning comprise 2n double-action plunger bar with pyramidal wave, differ 90 ° of phase motion; 3n double-action plunger bar with trapezoidal wave, to differ 120 ° of phase motion n be odd number, 3n double-action plunger bar with trapezoidal wave, differ 120 ° of phase motion or with pyramidal wave, to differ 90 ° of phase motion n be even number.
Above-mentioned a kind of linear motor driving plunger pump also can adopt plunger pump two cylinder bodies symmetry; All adopt the structure of cylinder body I 1; Two of two cylinder bodies suck through hole 17 inboard warp suctions and communicate connecting tube 2; Two suck through hole 17 outer ends is connected with the suction main; The extrusion through hole inboard of two cylinder bodies links to each other by extruding connecting tube 3; Extrude the through hole outer end and be connected, realize that two cylinder bodies suck the loop and extrude circuit communication with the extrusion house steward.Above-mentioned linear motor driving plunger pump, described linear electric motor adopt conventional construction, and promptly flat linear motor rotor is connected with a plurality of slide blocks, and guide rail is fixed, and stator drives mover to-and-fro motion on guide rail.
The working medium of above-mentioned linear motor driving plunger pump comprises mineral oil, sea water and fresh water and other low-viscosity flowing mediums.
The present invention can obtain following beneficial effect:
This plunger pump adopts moving-iron type linear motor, effectively overcomes the high-pressure liquid resistance, and has reduced the inertial force that coil type mover commonly used consumes, and has reduced linear electric motor normal thrust demand.Also can adopt conventional construction: flat linear motor rotor is connected with a plurality of slide blocks, and guide rail is fixed, and stator drives mover to-and-fro motion on guide rail.
This plunger pump adopts linear electric motor to adopt the double-action plunger bar, and the output flow of plunger pump has effectively been improved at hydraulic fluid in cavity another chamber in imbibition that an end plug and cylinder hole are formed.
This plunger pump cylinder body is simple in structure; Only through two cylinder interior open-blind holes, auxiliary hole and connecting tube ways of connecting; Two cylinder bodies realizing plunger pump extrude mouthful 27 fluids from plunger pump suction port 19 feed liquors, a plunger pump, just can effectively give many cover plunger flows.
The linear motor driving plunger pump adopts valve flow form, and resistance tocrocking strengthens greatly, has effectively reduced crucial friction pair quantity, only exist plunger-cylinder body secondary this to important friction pair, brought new approaches and new way for the development of water pressure plunger pump.
The single chamber flow of linear motor plunger pump and the movement velocity and the sectional area of plunger are linear.Linear motor driving 3n plunger rod; With trapezoidal wave, stagger 120 ° of phase places (n is an odd number) or with pyramidal wave, stagger 90 ° of phase places (n is an even number) when operation respectively respectively; The velocity composition curve of a plurality of plungers is constant, thereby plunger pump output combined flow can reach constant in theory; When a linear motor driving 2n plunger rod with pyramidal wave, and when staggering the operation of 90 ° of phase differences respectively, it is stable that the pump combined flow also can keep in theory.Secondly, this linear motor driving plunger pump possesses the intelligent fault-tolerance function.With four linear motor driving plunger pumps is example; When four linear electric motor with pyramidal wave, when differing the work of 90 ° of phase places; If position feedback device detects linear electric motor and breaks down; Control system automatic switchover linear electric motor motion planning, make each linear electric motor with trapezoidal wave, differ the operation of 120 ° of phase places; When detecting two linear electric motor and break down, switch again each linear electric motor motion planning to pyramidal wave, differ 90 ° of phase place work, guarantee that the velocity composition curve level of a plurality of plungers is constant, guarantee the stable combined flow of plunger pump output.Conventional axial plunger pump, plunger number are odd number, all have flow pulsation in theory, and the actual flow pulsation is bigger.This linear motor driving plunger pump is through the multi-cylinder combination, and flow pulsation is zero in theory, and reliability is high, can guarantee that also pump has stable combined flow output, reduces flow pulsation even break down.
This plunger pump is easy to realize variable and automation control, through servo-control system adjustment linear motor rotor motion planning, pilot plunger movement velocity, the Flow-rate adjustment of realization plunger pump; Or adopt switch operating linear electric motor number and linear motor rotor motion planning to realize Flow-rate adjustment, be applicable to the frequency control of motor speed pump control system.
Select and the structure fine setting through material, this plunger pump both can be made the work medium by mineral oil again, and also available sea water and fresh water and other low viscosity fluid media are made the work medium, and application area is wider.
Description of drawings
Accompanying drawing 1 is linear motor driving plunger pump plan view of the present invention.
Accompanying drawing 2 is linear motor driving plunger pump plan view of the present invention.
Accompanying drawing 3 is linear motor driving plunger pump right side view of the present invention.
Accompanying drawing 4 is linear motor driving plunger pump master apparent direction Section View of the present invention.
Accompanying drawing 5 is linear motor driving plunger pump left side view of the present invention.
Accompanying drawing 6 is the plan view of accompanying drawing 4.
Accompanying drawing 7 linear motor driving plunger pump cylinder body I right side views of the present invention.
Accompanying drawing 8 linear motor driving plunger pump cylinder body I plan views of the present invention.
Accompanying drawing 9 linear motor driving plunger pump cylinder body II plan views of the present invention.
Accompanying drawing 10 linear motor driving plunger pump cylinder body II left side views of the present invention.
The flow-distributing valve assembly right side view of accompanying drawing 11 linear motor driving plunger pumps of the present invention.
The flow-distributing valve assembly plan view of accompanying drawing 12 linear motor driving plunger pumps of the present invention.
The flow-distributing valve assembly left side view of accompanying drawing 13 linear motor driving plunger pumps of the present invention
Accompanying drawing 14 is that linear motor driving plunger pump mechanical part and electric part concern sketch.
Among the figure: 1; Cylinder body I, 2; Suck connecting tube, 3; Extrude connecting tube; 4; Plunger I, 5; Plunger bushing, 6; Plunger rod; 7; Guide rail, 8; Slide block, 9; Mover; 10; Plunger II, 11; Stator, 12; Flow-distributing valve; 13; Supported flange, 14; Gland, 15; Cylinder body I I; 16; The cylinder hole, 17; Suck through hole, 18; Extrude blind hole; 19; The plunger pump suction port, 20; Suction passage I, 21; Crescent I; 22; The flow-distributing valve mounting hole, 23; Suck blind hole, 24; Crescent II; 25; Suction passage II, 26; Extrude the duct, 27; Plunger pump extrudes mouth; 28; The flow-distributing valve suction port; 29; Delivery valve, 30; Suction valve, 31; Flow-distributing valve is the duct radially; 32; Suction valve is the duct radially, and 33; Flow-distributing valve extrudes mouth.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further specified through embodiment.
Embodiment 1
The linear motor driving plunger pump comprises mechanical part and electric part, and mechanical part and electric part are connected by linear motor rotor.With the plunger pump that contains four linear electric motor is example; Every linear electric motor of linear motor driving plunger pump are respectively by the driver drives of a correspondence; Controller is exported the control signal of certain phase difference to four drivers; After four drivers amplify control signal; Output to corresponding linear motor stator electric 11 more respectively; Thereby drive the mover 9 of corresponding linear electric motor, mover 9 drives plunger rod 6 with certain motion planning linear reciprocating motion through supported flange 13.
The to-and-fro motion on fixing slide block 8 of one group of coil type stator, 11 combination drive permanent-magnet formula movers 9; Permanent magnet mover 9 drives 6 to-and-fro motion of double-action plunger bar through supported flange 13, and the plunger I4 at double-action plunger bar 6 two ends and plunger II10 are in imbibition stroke and hydraulic fluid stroke respectively.Suppose linear motor rotor 9 from the limit on the left position setting in motion, plunger I4 gets into the imbibition stroke from dead point, the plunger cavity of cylinder body I 1 left side.Form negative pressure in the plunger cavity, barometric pressure makes fluid through plunger pump suction port 19, suction passage I20, overcomes suction valve 30 spring forces and gets into flow-distributing valve 12 intermediate cavity, flows in the plunger cavity again.Meanwhile; Plunger II10 gets into the hydraulic fluid stroke from the dead point, a plunger cavity left side of cylinder body I I15; After the plunger cavity inner fluid is compressed, overcome the fluid back pressure at delivery valve 29 spring forces and extrusion blind hole 18 places, flow through and extrude blind hole 18, extrude duct 26 to plunger pump extrusion mouth 27.When linear motor rotor 9 arrived the limit on the right-right-hand limit position, liquid was full of the plunger cavity of cylinder body I 1, and suction valve 30 valve plates are because of spring-loaded, and trend is closed; Simultaneously, the plunger cavity inner fluid of cylinder body I I15 all is discharged from, delivery valve 29 valve plate spring-loadeds, and trend is closed.
When position feedback device detected linear motor rotor 9 arrival limit on the right-right-hand limit positions, servo-control system was through controller, driver, 11 controls of coil type stator and drive mover 9 reversing motions.Plunger I4 gets into the hydraulic fluid stroke from the right dead point of the plunger cavity of cylinder body I 1; Compressed fluid overcomes delivery valve 29 spring forces and the fluid back pressure that extrudes blind hole 18 places; The extrusion blind hole 18 of the extrusion blind hole 18 of the cylinder body I of flowing through 1, extrusion connecting tube 3 and cylinder body I I15 extrudes mouthful 27 outflows through extruding duct 26 to plunger pump again.Simultaneously, plunger II10 gets into the imbibition stroke from the right dead point of the plunger cavity of cylinder body I I15.Form negative pressure in the plunger cavity, barometric pressure makes fluid through plunger pump suction port 19, suction through hole 17, suction connecting tube 2, suction blind hole 23 and suction passage II25, overcomes suction valve 30 spring forces and gets into flow-distributing valve 12 intermediate cavity, flows in the plunger cavity again.When linear motor rotor 9 arrived the limit on the left position, liquid was full of the plunger cavity of cylinder body I I15, and suction valve 30 valve plates are because of spring-loaded, and trend is closed; Simultaneously, the plunger cavity inner fluid of cylinder body I 1 all is discharged from, delivery valve 29 valve plate spring-loadeds, and trend is closed.So far, a linear motor rotor 9 in one-period, to-and-fro motion once, the plunger I4 at double-action plunger bar 6 two ends and the equal imbibition of plunger II10, discharge opeing are once.
In like manner, other several linear motor rotors 9 also drive plunger rod 6 to-and-fro motion, and each linear motor rotor 9 moves realization plunger pump imbibition and discharge opeing with certain phase difference under pyramidal wave or trapezoidal wave motion planning.The single chamber flow of linear motor plunger pump and the movement velocity and the sectional area of plunger are linear.Linear motor driving 3n plunger rod be with certain motion planning operation, when n is odd number, between linear electric motor with trapezoidal wave, the 120 ° of phase places operations of staggering respectively; When n is even number, between linear electric motor with pyramidal wave, respectively stagger the operation of 90 ° of phase places or with trapezoidal wave, the 120 ° of phase places operations of staggering respectively, guarantee that plunger pump output combined flow reaches constant.A many linear motor driving 2n plunger rod are with pyramidal wave, and when staggering 90 ° of phase differences operations respectively, it is stable that the pump combined flow also can keep in theory.Suppose four linear electric motor with pyramidal wave, differ 90 ° of phase place work.When position feedback device detects linear electric motor and breaks down, control system automatic switchover linear electric motor motion planning, make each linear electric motor with trapezoidal wave, differ 120 ° of phase place work; When detecting two linear electric motor and break down, control system automatic switchover linear electric motor motion planning, make each linear electric motor with trapezoidal wave, differ 90 ° of phase place work, guarantee the stable combined flow of plunger pump output.
Through adjustment linear motor rotor 9 motion plannings, can the pilot plunger movement velocity, realize the Flow-rate adjustment of plunger pump; Perhaps adopt switch operating linear electric motor number and linear motor rotor 9 motion plannings to realize Flow-rate adjustment.
Embodiment 2
The two cylinder bodies symmetry of plunger pump; All adopt the structure of cylinder body I; Two of two cylinder bodies suck the inboard warp suction of through hole and communicate connecting tube; Two suck the through hole outer end is connected with the suction main; The extrusion through hole inboard of two cylinder bodies links to each other by extruding connecting tube; Extrude the through hole outer end and be connected, realize that two cylinder bodies suck the loop and extrude circuit communication with the extrusion house steward.The beneficial effect of this housing structure is the The field environment that adapts to plunger pump, can be from an end imbibition of plunger pump and the other end hydraulic fluid or from the same end imbibition and the hydraulic fluid of plunger pump.
Select and the structure fine setting through material, this plunger pump both can be made the work medium by mineral oil again, and also available sea water and fresh water and other low viscosity fluid media are made the work medium.
Claims (10)
1. a linear motor driving plunger pump is characterized in that: be made up of mechanical part and electric part; Mechanical part mainly comprises cylinder body I (1), suction connecting tube (2), two extrusion connecting tube (3), four plunger bushings (5), four plunger rods (6), four guide rails (7), four groups of slide blocks (8), four movers (9), four groups of stators (11), four supported flanges (13), cylinder body I I (15) and eight cover flow-distributing valves (12); Electric part comprises a controller, four drivers, four flat linear electric motor, position feedback device etc., and electric part is formed the servo-drive control system again; Cylinder body I (1) and cylinder body I I (15) are distributed in the two ends of linear motor driving plunger pump; The suction through hole (17) of cylinder body I (1) sucks at the inboard warp of two cylinder bodies with the suction blind hole (23) of cylinder body I I (15) and communicates connecting tube (2), and the extrusion blind hole (18) of two cylinder bodies extrudes through two and links to each other connecting tube (3); Four linear electric motor are symmetric arrangement in twos, and every linear motor rotor (9) is connected with a plunger rod (6) through supported flange (13), cylinder hole (16) embedded plunger bushing formation plunger hole, the plunger and the plunger hole Spielpassung at plunger rod (6) two ends; Eight cover flow-distributing valves (12) embed respectively in the corresponding flow-distributing valve mounting hole (22), and flow-distributing valve (12) exterior edge face is by gland (14) sealing, and every group of plunger-cylinder hole is secondary corresponding with a cover flow-distributing valve (12); Its electric part comprises: every linear electric motor are by the driver drives of a correspondence; Controller is exported the control signal of certain phase difference to four drivers; After four drivers amplify control signal; Output to corresponding linear motor stator electric (11) more respectively; Thereby drive the mover (9) of corresponding linear electric motor, mover (9) drives plunger rod (6) with certain motion planning linear reciprocating motion through supported flange (13).
2. a linear motor driving plunger pump is characterized in that: be different from the described linear motor driving plunger pump of claim 1, contain four linear electric motor; The said linear motor driving plunger pump of this right contains 2n or 3n platform linear electric motor, n >=1, and every linear electric motor link to each other with a double-action plunger bar, with the to-and-fro motion in the cylinder hole of certain phase difference drive plunger rod, realize pump function between linear electric motor.
3. according to claim 1 and the described linear motor driving plunger pump of claim 2; It is characterized in that: if the linear motor driving plunger pump contains 2n platform linear electric motor; 2n double-action plunger bar of 2n platform linear motor driving is with pyramidal wave; And the 90 ° of phase place operations of staggering respectively; Make the velocity composition curve of a plurality of plungers constant, guarantee that the pump combined flow keeps stable; If the linear motor driving plunger pump contains 3n platform linear electric motor: when n is odd number, between linear electric motor with trapezoidal wave, the 120 ° of phase places operations of staggering respectively; When n is even number, between linear electric motor with pyramidal wave, respectively stagger the operation of 90 ° of phase places or with trapezoidal wave, the 120 ° of phase places operations of staggering respectively, guarantee that plunger pump output combined flow reaches constant.
4. a kind of linear motor driving plunger pump according to claim 1 is characterized in that: every flat linear electric motor comprise one group of coil type stator (11), one group of permanent magnet type mover (9), a guide rail (7) and two slide blocks (8); Stator (11) and slide block (8) all install and fix, and guide rail (7) is connected with mover (9), and slide block (8) plays guiding and positioning action to guide rail (7) mover (9), make mover (9) and stator (11) keep certain air gap;
Block I (1) and the cylinder II (15) asymmetric; cylinder I (1) have axially outer end of the piston to open the suction port (19), two opposite surface of the cylinder arranged in two rows of two There are four open bore (16), the cylinder I (1) on both sides of a valve with four mounting holes (22), with a valve mounting hole (22) to open a suction passage between the I (20), each a cylinder bore (16) with a distribution valve mounting hole (22) communicating with valve mounting hole (22) and the suction channel I (20) and on alveolar I (21) connecting the suction channel I (20) and valve valve inlet (28) and the cylinder block I (1) the central part of the suction through holes (17) are connected, block I (1) pressed out of the two blind holes (18) in the suction hole (17) of the upper and lower sides , press out the blind hole (18) and valve valve mounting hole (22) Central ie with pressure relief valve outlet (33) connected to pass; cylinder II (15) has opened a piston axially outer end of the exit pressure (27), the shaft inward evenly into two lines two open four cylinder bore (16), each cylinder bore (16) with the corresponding valve with mounting hole (22) communicating with valve mounting hole (22) has opened between the suction passage II ( 25), the suction channel II (25) through May alveolar II (24) and valve valve mounting hole (22) connecting the cylinder II (15) of the suction passage II (25) and valve valve inlet (28) and is located in the cylinder the body II (15) the center of the suction recess (23) are connected, block II (15) pressed out of the two blind holes (18) in the suction recess (23) of the upper and lower sides, and with the valve installed with hole (22) is equipped with central pressure outlet valve (33) connected to pass, block II (15) of the pressure of the blind hole (18) in the vertical direction by the pressure of the channel (26) press-out blind hole (18) and Pump pressure outlet (27) communicating; cylinder I (1), the cylinder II (15) consists of a suction passage (2) and two extruded communicating pipe (3) connected to the suction circuit to achieve two cylinder and the pressure of the circuit connected to pass.
5 according to claim 1, wherein a linear motor-driven piston, characterized in that: the suction valve (30) and the pressure of the valve (29) formed with flow valve (12) with integrated structure (patent , Patent Application No. 201110048541.8), with the outer end face of valve gland (14) sealed to the radial suction valve bore (32) through a suction channel I (20) and the suction through holes (17) is connected, or by inhalation channel II (25 ) with the suction recess (23) communicates with valve radial bore (31) and the cylinder bore (16) communicates with valve pressure outlet (33) in the distribution valve mounting hole (22) for two the opposed and with the pressure of the blind hole (18) communicating; plunger pair gap using automatic compensation device plunger cavity seal or directly with the combination of ring seal.
6. according to claim 1 or the described a kind of linear motor driving plunger pump of claim 2, it is characterized in that: through adjustment linear motor rotor (9) motion planning, pilot plunger I (4) and plunger II (10) movement velocity, the Flow-rate adjustment of realization plunger pump; Or adopt switch operating linear electric motor number and linear motor rotor (9) motion planning to realize Flow-rate adjustment.
7. according to claim 1 and the described a kind of linear motor driving plunger pump of claim 2; It is characterized in that: when position feedback device detects several linear electric motor and breaks down; The motion planning of control system automatic switchover linear motor rotor (9) has constant combined flow output to guarantee plunger pump, reduces flow pulsation; Described motion planning comprise 2n double-action plunger bar with pyramidal wave, differ 90 ° of phase motion;
When 3n double-action plunger bar and n are odd number with trapezoidal wave, differ 120 ° of phase motion; When 3n double-action plunger bar and n are even number with trapezoidal wave, differ 120 ° of phase motion or with pyramidal wave, differ 90 ° of phase motion.
8. according to claim 1 or the described a kind of linear motor driving plunger pump of claim 2, it is characterized in that: the working medium of said plunger pump comprises mineral oil, sea water and fresh water and other low-viscosity flowing mediums.
9. a kind of linear motor driving plunger pump according to claim 1; It is characterized in that: plunger pump two cylinder bodies symmetry; All adopt the structure of cylinder body I (1); Two of two cylinder bodies suck the inboard warp suction of through hole (17) connecting tube (2) and communicate; Two suck through hole (17) outer end is connected with the suction main; The extrusion through hole inboard of two cylinder bodies links to each other connecting tube (3) by extruding, and extrudes the through hole outer end and is connected with the extrusion house steward, realizes that two cylinder bodies suck the loop and extrude circuit communication.
10. according to claim 1 or the described a kind of linear motor driving plunger pump of claim 2; It is characterized in that: affiliated linear electric motor adopt conventional construction; Be that flat linear motor rotor is connected with a plurality of slide blocks, guide rail is fixed, and stator drives mover to-and-fro motion on guide rail.
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| CN201110233902.6A CN102305203B (en) | 2011-08-16 | 2011-08-16 | Linear motor-driven plunger pump |
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| CN201110233902.6A CN102305203B (en) | 2011-08-16 | 2011-08-16 | Linear motor-driven plunger pump |
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| CN102305203A true CN102305203A (en) | 2012-01-04 |
| CN102305203B CN102305203B (en) | 2014-04-09 |
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| CN201110233902.6A Expired - Fee Related CN102305203B (en) | 2011-08-16 | 2011-08-16 | Linear motor-driven plunger pump |
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| CN103208903A (en) * | 2013-03-06 | 2013-07-17 | 北京工业大学 | Linear motor for pump |
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| CN103343737A (en) * | 2013-07-17 | 2013-10-09 | 四川金星压缩机制造有限公司 | Linear motor reciprocating piston type compressor |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904359A (en) * | 2006-08-07 | 2007-01-31 | 华中科技大学 | Radial valve orificing axial hydraulic pressure plunger pump |
| CN101050758A (en) * | 2007-05-11 | 2007-10-10 | 华中科技大学 | Inclined shaft type sea water plunger pump based on gear driving |
| US20090108716A1 (en) * | 2007-10-31 | 2009-04-30 | Nidec Corporation | Brushless motor and cooling fan |
| CN101832243A (en) * | 2010-04-30 | 2010-09-15 | 北京工业大学 | Axial water pressure plunger pump with easy maintenance |
-
2011
- 2011-08-16 CN CN201110233902.6A patent/CN102305203B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1904359A (en) * | 2006-08-07 | 2007-01-31 | 华中科技大学 | Radial valve orificing axial hydraulic pressure plunger pump |
| CN101050758A (en) * | 2007-05-11 | 2007-10-10 | 华中科技大学 | Inclined shaft type sea water plunger pump based on gear driving |
| US20090108716A1 (en) * | 2007-10-31 | 2009-04-30 | Nidec Corporation | Brushless motor and cooling fan |
| CN101832243A (en) * | 2010-04-30 | 2010-09-15 | 北京工业大学 | Axial water pressure plunger pump with easy maintenance |
Cited By (24)
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| US10656132B2 (en) | 2012-01-19 | 2020-05-19 | Shenzhen Mindray Bio-Medical Electronics Co., Ltd. | Sampling pumps and gas analyzers |
| US11287410B2 (en) | 2012-01-19 | 2022-03-29 | Shenzhen Mindray Bio-Medical Electronics Co., Ltd. | Sampling pumps and gas analyzers |
| CN103208903A (en) * | 2013-03-06 | 2013-07-17 | 北京工业大学 | Linear motor for pump |
| CN103343737A (en) * | 2013-07-17 | 2013-10-09 | 四川金星压缩机制造有限公司 | Linear motor reciprocating piston type compressor |
| CN103557135A (en) * | 2013-10-15 | 2014-02-05 | 华中科技大学 | Double-working-condition self-adaption linear motor driven pump and method for achieving constant current output thereof |
| CN103557135B (en) * | 2013-10-15 | 2015-10-28 | 华中科技大学 | Double-working-condition self adaption straight line Electric-motor driven pumps and realize the method for constant current output |
| CN103670999A (en) * | 2013-12-31 | 2014-03-26 | 大连海事大学 | Reciprocating plunger pump driven by plunger flow distribution double-acting linear motors |
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| CN112360715A (en) * | 2020-10-26 | 2021-02-12 | 中国船舶科学研究中心 | Deep sea low noise variable pump |
| CN112360715B (en) * | 2020-10-26 | 2022-04-12 | 中国船舶科学研究中心 | Deep sea low noise variable pump |
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