CN100567730C - Hydraulic drive fluid pump - Google Patents
Hydraulic drive fluid pump Download PDFInfo
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- CN100567730C CN100567730C CNB2007100245263A CN200710024526A CN100567730C CN 100567730 C CN100567730 C CN 100567730C CN B2007100245263 A CNB2007100245263 A CN B2007100245263A CN 200710024526 A CN200710024526 A CN 200710024526A CN 100567730 C CN100567730 C CN 100567730C
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Abstract
The invention discloses a kind of highly effective hydraulic drive fluid pump, its agent structure is by the concentric cover of inlaying of two groups of power cylinders and reciprocating pump pumping cylinder, and the piston of edge cover oil cylinder is connected by a connecting rod with the piston of pumping cylinder, and piston can to-and-fro motion in two cylinder bodies.The rodless cavity of two agent structure power cylinders is connected with the commutation loop pipeline of dynamicliquid pressure system, and the rod chamber of two power cylinders is communicated with pipeline, and fills with hydraulic oil, forms the independent loop of two chambers; The clutch release slave cylinder of two agent structure reciprocating pumps connects two groups of individual event valves, forms the access way of flowing medium.The present invention utilizes the dynamicliquid pressure system, alternately hydraulic oil is injected two power cylinders by selector valve, by the piston rod of ram with transmission of power to the acting of pump group piston, reach the purpose of continuous conveyance fluid medium.It is simple in structure, reliable performance, energy-efficient, can be satisfied with the requirement of aspects such as the water supply of tall building single-stage, fire-fighting high service, petroleum pipeline supercharging conveying.
Description
One, technical field
The invention belongs to the hydraudynamic drive technical field, or rather, be a kind of power plant that promote piston linear reciprocating motion with fluid power, can not only replace bent axle or eccentric wheel transmission, and form an independent fluid reciprocating pump machine system with hydraulic pressure transfer power, can independently finish the conveying of all kinds of flowing mediums.
Two, background technique
Pump is the transmitting fluid medium.Divide clean waterpump by medium character, slag stock pump, acid and alkali pumps, oil pump (gasoline, diesel or heavy oil), air pump or the like.Press the working principle classification of pump: 1, vane type oil pump.Vane type oil pump can be divided into: centrifugal pump, mixed flow pump, axial-flow pump, peripheral pump.Centrifugal pump is the pump of main flow, and is of a great variety, says that water pump generally is meant centrifugal pump.Can divide single-stage pump, multistage pump again.Single-stage pump can be divided into: single entry pump, double suction pump, self-priming pump, non self-priming pump etc.Multistage pump can be divided into: sectional type, voluted type.Mixed flow pump can divide voluted type and stator formula.Axial-flow pump can be divided into stator blade and adjustable vane.Peripheral pump also can be divided into single entry pump, double suction pump, self-priming pump, non self-priming pump etc.2, positive displacement pump.Displacement pump can be divided into reciprocating pump, rotor pump, gear pump, screw pump or the like.3, other types pump.As Jet injector, gas lift pump, hydraulic ram, electromagnetic pump, turbine pump etc.
The working principle of fluid pump generally all is as prime mover with motor, a kind of is the rotation drive manner that directly drives blade (or gear) work, be called the rotation pump, another kind is the straight line drive manner that drives reciprocating pump work by bent axle or eccentric mechanism, is called reciprocating pump.Structurally, the sealing of rotation pump plays crucial effects for the working life, mechanical property, the designs simplification that rotate pump; Bent axle or eccentric mechanism complexity that the transition of reciprocating pump connects, difficulty of processing is big, and the dynamic seal (packing) difficulty is bigger, can not realize continuous transmission medium; On efficient, because the system effectiveness of pump is: η=η
X η
Pump, η in the formula
Be the efficient of motor, η
PumpBe pump efficiency, from formula, can know η
The efficient substantially constant, so the efficient of system is by η
PumpDecision: it is the deadly defect that influences this type of pump efficiency that the sealing configuration problem of rotation pump causes leaking, and the connection bent axle of reciprocating pump or eccentric labyrinth and counterweight also directly influence its efficient.
Three, summary of the invention
The object of the present invention is to provide a kind of novel liquid transfer energy of using, and can carry that the highly effective hydraulic drive fluid pump of any flowing medium, this fluid pump have that high working efficiency, lift height, fed distance are far away, advantage such as long service life, operation and maintenance cost are low.
Specific embodiments of the present invention is as follows:
A kind of hydraulic drive fluid pump, it is characterized in that: it comprises the pump motor group, the fuel tank of hydraulic oil is housed, two power cylinders and respectively with concentric two reciprocating pumps of cover all-in-one-piece of inlaying of these two power cylinders, the active chamber top of two reciprocating pumps connects two one-way valves respectively, piston in the described edge cover all-in-one-piece power cylinder cylinder is connected by same connecting rod with the piston in the reciprocating pump pumping cylinder, and the reciprocating pump pumping cylinder is provided with the control contact;
The cylinder body of described power cylinder is divided into bar piston cavity and rodless piston chamber, and the having of two power cylinders filled with hydraulic oil and be connected by pipeline in the bar piston cavity, and the rodless piston chamber of two cylinders links to each other with an actuator port of selector valve respectively; Selector valve is provided with a filler opening, two actuator ports and a return opening, and described filler opening connects the pump motor group by pipeline, and return opening connects fuel tank by pipeline;
Reciprocating pump comprises the pumping cylinder that is provided with two chambers, and piston assembly, described piston assembly is made up of the piston and the piston rod of reciprocating pump, two chambers of pumping cylinder are respectively active chamber and connection chamber, the one-way valve on each reciprocating pump active chamber top is respectively feed liquor valve and liquid valve, the feed liquor valve all is communicated with the import of flowing medium, and liquid valve all is communicated with the outlet of flowing medium, forms the half-duplex channel of liquid inlet and outlet.
Described power cylinder cylinder body comprises with the edge cover mode of reciprocating pump pumping cylinder: the concentric edge of power cylinder cylinder body is enclosed within the outside of reciprocating pump pumping cylinder; Or the reciprocating pump pumping cylinder is inlayed the outside that is enclosed within the power cylinder cylinder body with one heart; Or the power cylinder cylinder body is suitable with reciprocating pump pumping cylinder external diameter, and cylinder body and pumping cylinder are solidly fixed.
An accumulator is connected in parallel on the fluid output pipeline.
The connection chamber of described reciprocating pump is a common pressure chamber, in be provided with an isolating plate, isolating plate is divided into two parts with connection chamber.
The connection chamber of described reciprocating pump is respectively established one every the pendular ring groove on the isolating plate inwall divided into two parts, all has an outage in the minimum point every the pendular ring groove.The purpose of this design is to increase a insurance reliably in order to block issuable the oozing mutually of hydraulic oil and reciprocating pump conveyance fluid medium.Because an isolating plate has been arranged, make the two kinds of flowing mediums blocking-up that may ooze out, two make the flowing medium that may ooze out infilter annular groove every the pendular ring groove, and outage is processed in the annular groove minimum point, and its effect makes the flowing medium that oozes out in time ooze out connection chamber.
Two one-way valves on described each reciprocating pump active chamber top forward connect, and are connected with outlet with the fluid inlet of reciprocating pump respectively by threeway between two one-way valves.
Described selector valve adopts the electromagnetism two-position four way change valve.The rodless piston chamber of two cylinders respectively with the linking to each other of selector valve; The commutation loop of dynamicliquid pressure system adopts the two-position four-way solenoid directional control valve, two actuator ports of two-position four-way solenoid directional control valve are communicated with the rodless piston chamber of power cylinder, the filler opening of two-position four-way solenoid directional control valve connects the pump motor group by the pipeline connection, and the return opening of two-position four-way solenoid directional control valve connects fuel tank.Shuttle valve control mechanism is equipped with sense contact on reciprocating pump pumping cylinder and piston, the position limit switch of corresponding control selector valve.The induction mode of control contact adopts electromagnetic induction, optoelectronic induction or piezoelectric constant induction etc.Control contact on the control mechanism of selector valve and the reciprocating pump pump housing can use existing ripe sensory technique and computer autocontrol technique, forms integrated and intelligent.
Damage selector valve and power cylinder in order to prevent the hydraulic system superpressure, a pilot operated compound relief valve in parallel between the filler opening of selector valve and pump motor group, the outlet of pilot operated compound relief valve connects fuel tank by pipeline, when hydraulic oil surpasses rated pressure, pilot operated compound relief valve is opened, and the hydraulic oil bypass comes back to fuel tank.
In order to clean the hydraulic oil in the oil circuit at any time, between fuel tank and pump motor group, selector valve, be connected with oil purifier by pipeline respectively, can remain cleanliness of hydraulic oil.
The present invention is a kind of hydraulically powered reciprocating pump, and it is that motor is transformed into the hydraulic pressure chamber piston action that can and push the work forward as the electric energy (mechanical energy) of prime mover input, makes its hydraulic pressure can pass to the energy conversion device that is transferred flowing medium.Its effect is to provide the power of pressure oil to provide enough to-and-fro motion energy to working pump by hydraulic system, can make the lift that is transferred fluid enough high, distance is enough far away, improve energy conversion efficiency to greatest extent, the hydraulic oil of guaranteeing power system does not contact with the medium of reciprocating pump active chamber, contaminativity to oleic acid alkali is insensitive, and can stable and continuous ground conveyance fluid medium, compare existing big flow, high-lift, the same device of high pressure operating mode, its manufacture difficulty and cost descend greatly, the user cost (electricity charge, maintenance cost) also can decline to a great extent low.This pump is suitable for various rugged environment, and is stable and reliable for performance.
The occasion that the present invention can be used for that the water supply of tall building (more than 100 meters) single-stage, fire hydrant high service, the long-range conveying booster station of petroleum gas, petroleum chemical industry supercharging transmission, hydrojunction drainage and irrigation station, the high-lift fountain sight in city etc. are high-lift, high pressure, big flow convection cell power require.
The present invention has following characteristics compared to existing technology:
(1) by adopting fluid power to promote the power plant of piston linear reciprocating motion, can not only replace bent axle or eccentric wheel transmission, and form an independent fluid reciprocating pump machine system with hydraulic pressure transfer power, can independently finish all kinds of flowing mediums and carry, thereby save with motor or steam engine labyrinth as prime mover.
(2) make the maximizing efficiency of native system by adopting the hydraulic oil transferring power to be implemented in the axial action acting of sealing inner carrier, having ready conditions, this feature is that any other type of pump is incomparable.So use this pump to go to realize that high-lift, remote, big flow becomes simple easily.Be applicable to water control project drainage and irrigation station, water factory's pump water supercharging etc.
(3) because conventional art route and methods such as main hydraulic oil transmission of adopting of this invention and reciprocating piston pump are guaranteed the stability of this pump, reliability, have high efficiency, long-life feature simultaneously.
(4) because this pump adopts the cover cylinder structure, and in the connection chamber of reciprocating pump the design isolated plate, every pendular ring groove and standby liquid port, can strict power fluid medium and fed sheet of a media be kept apart, this pump is served many purposes, the pipe pressurizing that can be used for high building tap water boosting, Oil and Natural Gas Transportation Pipeline supercharging, chemical industry, be applicable to soda acid sewage mud transmission, and as the metering pump use etc.
Four, description of drawings
Fig. 1 is a structural representation of the present invention.
Wherein: 1-electricity oil pump, 2-power fuel tank, 3-filter, the 4-pilot operated compound relief valve, 5-two-position four-way solenoid directional control valve, 7-selector valve filler opening, 8,9-selector valve actuator port, 6-selector valve return opening, 10,11,12, the 13-connection mouth, 14,16-rodless piston chamber, 15,17-has bar piston cavity, 18, the 19-power cylinder, 20, the 21-piston, 22, the 23-connecting rod, 24, the 25-piston, 26, the 27-pumping cylinder, 28, the 29-active chamber, the 30-isolating plate, 31-is every pendular ring groove, 32,33,34,47-solenoid directional control valve control contact, the standby outage of 35-, 38,39,40, the 41-one-way valve, 36,37-pump housing connection mouth, 42-accumulator, 43-fluid inlet, the 44-fluid output, 45, the 46-connection chamber.
Five, embodiment
Description under doing into below in conjunction with accompanying drawing to the present invention:
Structural drawing of the present invention is seen Fig. 1.Agent structure is by the concentric edge cover of two groups of power cylinders with reciprocating pump, one group of cylinder body of edge cover and pumping cylinder piston be connected by a connecting rod, piston can to-and-fro motion in two cavitys, and following power cylinder is a ram, and top reciprocating pump pumping cylinder is a clutch release slave cylinder.Ram with two agent structures is connected with the pressure oil pipeline of power system, and the rod chamber of two rams is communicated with pipeline, and fills with hydraulic oil, forms the independent loop in two chambeies.Upper end at the active chamber of two clutch release slave cylinders connects one group of individual event valve respectively, and two outlet one-way valves are communicated with accumulator in parallel, forms the flowing medium outlet of steady and continuous, the other end of two import one-way valves is communicated with introduces the flowing medium import simultaneously.When system opens when pump motor group power supply, dynamicliquid pressure oil gives two power cylinders for pressure oils from fuel tank through selector valve is time-sharing automatic, the energy transfer of pressure oil is done work to reciprocating motion of the pistons, and drives the piston motion of clutch release slave cylinder, constantly changes the acting of active chamber internal volume.Because the present invention has adopted electric oil pump hydraulic system that motive force is provided, the end thrust size of piston is depended in the acting energy output of clutch release slave cylinder, so become simple and reliable easily with this high-power, big flow, high-lift, remote conveyance fluid medium.Simultaneously because the present invention has structurally taked pumping cylinder to connect the obstruct measure of chamber, insensitive to the soda acid that is transmitted flowing medium etc., can guarantee also that as the transmission tap water working medium is not contaminated.
With the fire-fighting high-pressure water tap of the present invention's exploitation, its fire-fighting lift is existing more than several times of fire hydrant, and adjusts lift by pump pressure.High-rise building raw water service pump with the present invention's exploitation can provide suitable pressure water source to any floor height at bottom, saves existing high-floor feedwater water supply by stage system equipment and transfer layer and takies the floor useful area, can improve water application efficiency more than 50% simultaneously.
Working principle of the present invention: referring to Fig. 1, at first open electric oil pump 1, the hydraulic oil of power fuel tank 2 sucks electric oil pump 1 through oil purifier 3, the high pressure oil that pumps enters electromagnetism two-position four way change valve 5 by selector valve filler opening 7, when 5 outages of electromagnetism two-position four way change valve, high pressure oil enters the rodless piston chamber 14 of power cylinder 18 by selector valve actuator port 8, move on the piston 20 of power cylinder 18 at this moment, when moving on the piston 20 by connecting rod 22 make pumping cylinder piston 24 with on move, reciprocating pump active chamber 28 volumes are diminished, produce malleation the fluid in the reciprocating pump active chamber 28 is discharged through one-way valve 39.The piston 20 of while power cylinder 18 moves up in the process, power cylinder 18 has hydraulic oil that bar piston cavity 15 fills with through what connection mouth 13 entered power cylinder 19 bar piston cavity 17 to be arranged again through connection mouth 12, promoting piston 21 moves down, the hydraulic oil in the rodless piston chamber 16 of power cylinder 19 passes back into electromagnetism two-position four way change valve 5 through selector valve actuator port 9, flows back to power fuel tank 2 by selector valve return opening 6 through oil purifier 3.Meanwhile, along with moving down of the piston 21 in the power cylinder 19, be attached thereto pumping cylinder piston 25 by connecting rod 23 moves down thereupon, the active chamber 29 of pumping cylinder 27 sucks liquid through one-way valve 41, pumping cylinder piston 25 moves down thereupon, solenoid directional control valve control contact 47 on the piston 25 touches the solenoid directional control valve control contact 34 on the pumping cylinder 27, electromagnetism two-position four way change valve 5 energising commutations this moment, the high pressure oil that electricity oil pump 1 pumps enters the rodless piston chamber 16 of power cylinder 19 by actuator port 9, move on the piston 21 of power cylinder 19 at this moment, when moving on the piston 21 by connecting rod 23 make pumping cylinder piston 25 with on move, the liquid that promotes the active chamber 29 of pumping cylinder 27 is discharged through individual event valve 40.The piston 21 of power cylinder 19 moves past in the journey last simultaneously, power cylinder 19 has hydraulic oil that bar piston cavity 17 fills with through what filler opening 12 entered oil cylinder 18 bar piston cavity 15 to be arranged again through oil outlet 13, promoting piston 20 moves down, the hydraulic oil in oil cylinder 18 rodless piston chambeies 14 passes back into electromagnetism two-position four way change valve 5 through actuator port 8, flows back to fuel tank 2 by return opening 6 through oil purifier 3.Meanwhile,, be attached thereto pumping cylinder piston 24 by connecting rod 22 and move down thereupon, make the volume of reciprocating pump active chamber 28 become big, produce negative pressure fluid is sucked active chamber 28 through one-way valve 38 along with the piston 20 in the power cylinder 18 moves down.Accumulator 42 in parallel on fluid output 44 pipelines, its effect can make the pressure of fluid output 44 keep constant, reach the effect of pump liquid by the process of above reciprocation cycle.
Adopt the fire hydrant high service system of the present invention's exploitation, its fire-fighting lift is existing more than several times of fire hydrant, and can adjust lift by pump pressure.High-rise building raw water service pump with the present invention's exploitation, can provide suitable pressure water source to any floor height at bottom, especially floor height is at the tall building more than 100 meters, to save the system equipment of existing high-floor feedwater water supply by stage and the useful area that the transfer layer takies floor, water application efficiency can significantly improve simultaneously.
Claims (9)
1, a kind of hydraulic drive fluid pump, it is characterized in that: it comprises the pump motor group, the fuel tank of hydraulic oil is housed, two power cylinders and respectively with concentric two reciprocating pumps of cover all-in-one-piece of inlaying of these two power cylinders, the active chamber top of two reciprocating pumps connects two one-way valves respectively, piston in the described edge cover all-in-one-piece power cylinder cylinder is connected by same connecting rod with the piston in the reciprocating pump pumping cylinder, and the reciprocating pump pumping cylinder is provided with the control contact;
The cylinder body of described power cylinder is divided into bar piston cavity and rodless piston chamber, and the having of two power cylinders filled with hydraulic oil and be connected by pipeline in the bar piston cavity, and the rodless piston chamber of two cylinders links to each other with two actuator ports of selector valve respectively; Selector valve is provided with a filler opening, two actuator ports and a return opening, and described filler opening connects the pump motor group by pipeline, and return opening connects fuel tank by pipeline;
Described reciprocating pump comprises the pumping cylinder that is provided with two chambers, and piston assembly, described piston assembly is made up of the piston and the piston rod of reciprocating pump, two chambers of pumping cylinder are respectively active chamber and connection chamber, the one-way valve on each reciprocating pump active chamber top is respectively feed liquor valve and liquid valve, the feed liquor valve all is communicated with fluid inlet, and liquid valve all is communicated with fluid output, forms the half-duplex channel of liquid inlet and outlet.
2, fluid pump according to claim 1 is characterized in that: described power cylinder cylinder body comprises with the edge cover mode of reciprocating pump pumping cylinder: the concentric edge of power cylinder cylinder body is enclosed within the outside of reciprocating pump pumping cylinder; Or the reciprocating pump pumping cylinder is inlayed the outside that is enclosed within the power cylinder cylinder body with one heart; Or the power cylinder cylinder body is suitable with reciprocating pump pumping cylinder external diameter, and cylinder body and pumping cylinder are solidly fixed.
3, fluid pump according to claim 1 is characterized in that: an accumulator is connected in parallel on the fluid output pipeline.
4, fluid pump according to claim 1 is characterized in that: the connection chamber of described reciprocating pump is a common pressure chamber, in be provided with an isolating plate, isolating plate is divided into two parts with connection chamber.
5, fluid pump according to claim 4 is characterized in that: the connection chamber of described reciprocating pump is respectively established one every the pendular ring groove on the isolating plate inwall divided into two parts, all has an outage in the minimum point every the pendular ring groove.
6, fluid pump according to claim 1 is characterized in that: two one-way valves on described each reciprocating pump active chamber top forward connect, and are connected with outlet with the fluid inlet of reciprocating pump respectively by threeway between two one-way valves.
7, fluid pump according to claim 1, it is characterized in that: the commutation loop of dynamicliquid pressure system adopts the two-position four-way solenoid directional control valve, two actuator ports of two-position four-way solenoid directional control valve are communicated with the rodless piston chamber of power cylinder, the filler opening of two-position four-way solenoid directional control valve connects the pump motor group by the pipeline connection, and the return opening of two-position four-way solenoid directional control valve connects fuel tank.
8, fluid pump according to claim 7 is characterized in that: the induction mode of described control contact adopts electromagnetic induction, optoelectronic induction or piezoelectric constant induction.
9, fluid pump according to claim 7 is characterized in that: a relief valve also in parallel between described selector valve filler opening and the pump motor group, and relief valve is communicated with fuel tank through oil purifier; Also be provided with oil purifier between pump motor group and the fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100245263A CN100567730C (en) | 2007-06-21 | 2007-06-21 | Hydraulic drive fluid pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100245263A CN100567730C (en) | 2007-06-21 | 2007-06-21 | Hydraulic drive fluid pump |
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| Publication Number | Publication Date |
|---|---|
| CN101078395A CN101078395A (en) | 2007-11-28 |
| CN100567730C true CN100567730C (en) | 2009-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100245263A Expired - Fee Related CN100567730C (en) | 2007-06-21 | 2007-06-21 | Hydraulic drive fluid pump |
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| CN (1) | CN100567730C (en) |
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| Publication number | Publication date |
|---|---|
| CN101078395A (en) | 2007-11-28 |
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