CN1314903C - Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels - Google Patents
Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels Download PDFInfo
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- CN1314903C CN1314903C CNB2004100226574A CN200410022657A CN1314903C CN 1314903 C CN1314903 C CN 1314903C CN B2004100226574 A CNB2004100226574 A CN B2004100226574A CN 200410022657 A CN200410022657 A CN 200410022657A CN 1314903 C CN1314903 C CN 1314903C
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Abstract
The present invention discloses a magnetic rheological fluid control valve with two liquid flow resistance channels, which is used for realizing continuous and/or switching control of the magnetic rheological fluid. The magnetic rheological fluid control valve simultaneously adopts an annular liquid flow resistance channel and a disk-shaped liquid flow resistance channel, uses a cylinder, the annular liquid flow resistance channel, a magnetic conductive disk and the disk-shaped liquid flow resistance channel as an outer magnetic path for the generation of a magnetic field, and uses a valve core as an inner magnetic path for the generation of the magnetic field, wherein gaps of the annular liquid flow resistance channel are guaranteed by the accurate transition positioning fit of a positioning block and the cylinder and the connection of the positioning block and the magnetic conductive disk by a positioning pin; the thickness of the disk-shaped liquid flow resistance channel is guaranteed by a gasket sheathed on a connection pin for connecting the magnetic conductive disk and the valve core; the connection pin and the gasket are made form non-magnetic conductive material. The magnetic rheological fluid control valve can generate great liquid flow resistance under the action of small currents, and guarantees that the magnetic rheological fluid control valve has the advantages of large range of flow control, little energy consumption, small structure size, light in weight, simple structure and easy batch production.
Description
Technical field
Patent of the present invention belongs to field of hydraulic control, is specifically related to a kind of magnetic flow liquid control valve with two kinds of liquid flowing resistance passages.
Technical background
Hydraulic control valve is one of core parts of hydraulic system.In hydraulic system, hydraulic control valve is used for pressure, flow and the flow direction of liquid stream in the controlled hydraulic system, thereby control hydraulic actuator startup, stop, change speed, direction, power and the sequence of movement etc. of motion, to satisfy of the requirement of all kinds of hydraulic equipments to motion, speed, power and torque.Therefore the performance of hydraulic control valve directly has influence on static characteristic, dynamic response and the functional reliability of hydraulic system.
Traditional hydraulic control valve is because the mechanical part of existence activity, complex structure, and the processing request height, wearing and tearing easily, it is unreliable therefore to cause moving, and volume is big, and also there are problems such as wayward, low-response, operational noise are big in the cost height.Therefore seeking a kind of simple in structure, reliable in action, being easy to control, respond fast hydraulic control valve is the problem that hydraulic system is eager to solve.
Along with the development of electromechanical integration technology, the appearance of the extensive use of computer, especially may command fluid (electrorheological fluid and magnetic flow liquid), people begin attention is turned to Hydrauservo System based on the may command fluid.Compare with magnetic flow liquid, because electrorheological fluid exists shear yield stress little, defectives such as the operating voltage height of requirement, and the yield stress of magnetic flow liquid is big, response is fast, operating voltage is low, insensitive to what pollute, paid attention to by numerous scientific research personnel and engineers and technicians gradually.The magnetic flow liquid control valve is not owing to there is movably mechanical part, and the flow of the magnetic flow liquid that it passes through can be controlled by impressed current, so the speed of response height, and noise is low, and energy consumption is little, and working stability is reliable.About the single liquid flowing resistance passage of the many employings of the design of magnetic flow liquid control valve, the area of liquid flowing resistance passage is little at present, and the liquid flowing resistance of generation is limited.In order to realize effective control of magnetic flow liquid, have only increase physical dimension and (or) operating current; Also there are problems such as spool location complexity simultaneously.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, a kind of magnetic flow liquid control valve with two kinds of liquid flowing resistance passages is provided.The magnetic flow liquid control valve that the present invention proposes, adopt annular and disc liquid flowing resistance passage simultaneously, increased the shearing area of liquid flowing resistance passage effectively, liquid flowing resistance just begins to change under the effect of little exciting current, control range to the magnetic flow liquid flow enlarges, the energy consumption of guaranteeing control valve is less, compact structure, and volume is little, cost is low, and be easy to control, speed of response is fast, the efficient height.
The present invention is achieved in that
This magnetic flow liquid control valve includes cylinder barrel, spool, field coil and valve end cap, the working medium of control valve is a magnetic flow liquid, control valve is connected with pipe joint in the magnetic flow liquid hydraulic circuit by the screw thread on the two end valve end caps, field coil is wound on the outer non-magnetic conduction coil holder of spool, and the lead of drawing of field coil is drawn by the aperture on the end end cap.The unique distinction of this control valve is that the end face at spool and non-magnetic conduction coil holder is provided with the magnetic conduction disk, and pad is set between magnetic conduction disk and this end face constitutes the gap, forms disc liquid flowing resistance passage; The outer ring surface of magnetic conduction disk and the gap between the cylinder barrel form annular liquid flowing resistance passage again, are communicated with the center hole of valve core inside by disc liquid flowing resistance passage, form a complete liquid flowing resistance passage.Magnetic flow liquid flows into annular liquid flowing resistance passage by flow guide device, flows to the center hole that disc liquid flowing resistance passage enters spool again, is flow to and corresponding disc of the spool the other end and annular liquid flowing resistance passage by center hole again, flows out at last.Such design can be under the prerequisite of the energy consumption of the outside dimensions that does not increase valve, coil winding, field current and magnetic flow liquid control valve, by adopting the liquid flowing resistance passage of annular and the two kinds of forms in disc plane simultaneously, increase the shearing area of liquid flowing resistance passage, thereby the increase liquid flowing resistance makes the magnetic flow liquid control valve wideer to the control range of magnetic flow liquid flow.
In order further to increase liquid flowing resistance, can produce the size of liquid flowing resistance as required, with field coil, non-magnetic conduction coil holder and spool setting at least two groups, separate by magnetic conduction disk and pad between group and the group, all be formed with disc liquid flowing resistance passage between the non-magnetic conduction coil holder of magnetic conduction disk and each group, form annular liquid flowing resistance passage with inner wall of cylinder, the center hole of so annular liquid flowing resistance passage, disc liquid flowing resistance passage and valve core inside is communicated with (head and the tail communicate) successively, forms a complete liquid flowing resistance passage.
The magnetic flow liquid control valve also is provided with positioning block as precision positioning device between magnetic conduction disk and valve end cap, the transition fit of asking the employing precision positioning of positioning block and cylinder barrel has equally distributed pod apertures on the positioning block, and positioning block is connected with spool by locating stud.The gap that makes annular liquid flowing resistance passage is connected assurance with positioning block with the locating stud of magnetic conduction disk with precision positioning cooperation between the cylinder barrel by positioning block.
The magnetic conduction disk of magnetic flow liquid control valve is connected with spool by magnetic conduction connecting pin not, and the pad that is enclosed within on the connecting pin also adopts non-magnet_conductible material.Guaranteed that by the location with every magnetic design the size in liquid flowing resistance gap and magnetic field as much as possible in the distribution in liquid flowing resistance gap, gives full play to the effect of magnetic field to magnetic flow liquid like this.
In addition, this control valve also has the improvement on the following details: be provided with the guide pad with taper guide face between magnetic conduction disk and positioning block, the edge designs that the end face of magnetic conduction disk combines with guide pad is a round-corner transition, magnetic flow liquid is flow to from pipe joint, by equally distributed four apertures on the positioning block, can successfully flow to annular liquid flowing resistance passage along the tapered guide surface of guider, the fillet of magnetic conduction disk two ends design, avoid the generation of turbulent flow.
Adopt the seal ring sealing between non-magnetic conduction coil holder two ends and the cylinder barrel, be cut off at the slot seal ring of an end of coil holder, lead is drawn from the cut-off part extruding, adopts the sealer sealing again, flow into disc liquid flowing resistance passage with assurance liquid fully from annular liquid flowing resistance passage, and do not enter winding slot.The valve end cap adopts with cylinder barrel and is threaded, and with the seal ring sealing, to guarantee higher operational safety.
The spool of this magnetic flow liquid control valve and cylinder barrel employing permeability height, the low-carbon steel material that coercivity is low, positioning block, guide pad and pad all adopt non-magnet material.
This magnetic flow liquid control valve is a bidirectional control valve, and any end can become inlet opening, and an other end then becomes liquid outlet opening naturally.
The advantage of patent of the present invention:
1. this control valve is controlled flow by the magnetic flow liquid of valve by the size of control field coil electric current, there is not the mechanical part that moves, with respect to traditional mechanical valve, the magnetic flow liquid control valve is simple in structure, and volume is little, be easy to control, speed of response is fast, and operational noise is low, and is wear-resistant, the reliability height, cost is low.
2. this control valve is under the prerequisite of the energy consumption of the outside dimensions that does not increase valve, coil winding, field current and magnetic flow liquid control valve, adopt the liquid flowing resistance passage of annular and two kinds of forms of disc simultaneously, increased the shearing area of liquid flowing resistance passage, thereby increased liquid flowing resistance, made the magnetic flow liquid control valve wideer the control range of magnetic flow liquid flow.When the magnetic flow liquid control valve is used for the controllable damper system of bypass vibration damping, can increase the control range of controllable damping force.When switch valve uses, improved the valve working efficiency at magnetic rheological valve.When using, can control the flow of magnetic flow liquid more accurately as proportional control valve.
3. the positioning device of magnetic flow liquid control valve is simple, transition fit by positioning block and cylinder barrel, locating stud connects positioning block and spool, the radial dimension that has guaranteed gap between spool and the cylinder barrel is even, give full play to the effect of magnetic field to magnetic flow liquid, the thickness by the pad between magnetic conduction disk and the spool guarantees the gap of disc liquid flowing resistance passage, and such location is reliable, be suitable for mass production, cost is low.
4. equally distributed pod apertures and guide pad with tapered guide surface can guarantee the unobstructed gap that flows to equably between spool and the cylinder barrel of magnetic flow liquid on the positioning block, and fillet is adopted at magnetic conduction disk two ends, magnetic flow liquid is successfully flow to or (with) flow out the liquid flowing resistance passage, avoid the generation of turbulent flow.
5. this control valve adopts the material conduct of some non-magnetic conductions every magnetic, as pad, connecting pin, coil holder etc., guaranteed that magnetic field is distributed in the liquid flowing resistance passage as much as possible, more give full play to the effect of magnetic field to magnetic flow liquid, control the flow of magnetic flow liquid effectively, reduce the energy consumption of magnetic flow liquid control valve.
Description of drawings:
Fig. 1 is a structure sectional view of the present invention.
Fig. 2 is that magnetic circuit of the present invention is schemed.
Fig. 3 is the liquid flow path direction figure (from left to right) of magnetic flow liquid of the present invention.
Fig. 4 is a positioning device sectional view of the present invention.
Fig. 5 is the A-A sectional drawing of Fig. 4.
Fig. 6 is the structure sectional view with magnetic flow liquid control valve of two field coils.
Fig. 7 is the theory diagram that the present invention uses in magnetorheological hydraulic pressure actuator system.
Fig. 8 is the theory diagram that the present invention is used to constitute the controllable damper system.
Embodiment
Below in conjunction with accompanying drawing structure of the present invention is described further:
In the accompanying drawing: 1 for drawing lead, and 2 is guide pad, and 3 for drawing the magnetic conduction disk of lead end, 4 is annular liquid flowing resistance passage, and 5 are magnetic conduction pad not, and 6 is connecting pin, 7 is spool, and 8 is seal ring, and 9 is locating stud, 10 is positioning block, and 11 is the valve end cap, and 12 is the seal ring between end cap and the cylinder barrel, 13 is the magnetic conduction disk, 14 is disc liquid flowing resistance passage, and 15 is cylinder barrel, and 16 is field coil, 17 is non-magnetic conduction coil holder, 18 draw lead seal ring on one side for coil holder, and 19 for drawing lead one side valve end cap, and 20 is inlet opening, 21 is pod apertures, 22 magnetic flow liquids, 23 is liquid outlet opening, 24 is the center spool hole
With reference to accompanying drawing 1, be structure sectional view of the present invention, the working medium of control valve is a magnetic flow liquid 22, and control valve is connected with pipe joint in the magnetic flow liquid hydraulic circuit by the tapped hole on the two end valve end caps 11 and 19, and field coil 16 is wound on the outer non-magnetic conduction coil holder 17 of spool 7.End face at spool 7 and non-magnetic conduction coil holder 17 is provided with magnetic conduction disk 3 and 13, between magnetic conduction disk 3,13 and valve end cap 11,19, positioning block 10 is set as precision positioning device, wherein positioning block 10 is connected by locating stud 9 respectively with 13 with magnetic conduction disk 3, magnetic conduction disk 3,13 is connected with the non-magnetic connecting pin 6 of spool 7 by two symmetries, and the not magnetic conduction pad 5 that is enclosed within the centre, gap on the non-magnetic connecting pin 6 guarantees the gap size of disc liquid flowing resistance passages 14. Adopt 8,18 sealings of O RunddichtringO between non-magnetic conduction coil holder 17 two ends and the cylinder barrel, be cut off, draw lead 1 and draw, adopt the sealer sealing again from the cut-off part extruding at the slot seal ring 18 of an end of coil holder.Valve end cap 11 and 19 adopts with cylinder barrel 15 and is threaded, and seals with O RunddichtringO 12.
With reference to accompanying drawing 2, for magnetic circuit of the present invention is schemed.With the sealing magnetic line of force of arrow, pass through spool 7 successively as shown in FIG., disc liquid flowing resistance passage 14, magnetic conduction disk 13,3, annular liquid flowing resistance passage 4 and cylinder barrel 15.Wherein spool 7, magnetic conduction disk 13,3, cylinder barrel 15 be as the part of magnetic circuit, adopts permeability height, low carbon steel that coercivity is low.Adopt non-magnet_conductible material as connecting pin 6, pad 5 and non-magnetic conduction coil holder 17, guarantee magnetic circuit, and guarantee that the intensity of liquid flowing resistance passage internal magnetic field is enough big, give full play to the inhibition of magnetic field magnetic flow liquid along the direction shown in the figure every magnetic cell.Magnetic line of force direction is vertical with the flow direction of liquid in the liquid flowing resistance passage, guarantees to obtain under the situation of certain field current and energy consumption maximum liquid flowing resistance. Magnetic conduction disk 13,3 two ends are designed to fillet, reduce magnetic flow liquid enter or (with) generation of turbulent flow phenomenon when flowing out the liquid flowing resistance passage.
With reference to accompanying drawing 3, be the liquid flow path direction figure of magnetic flow liquid of the present invention.Magnetic flow liquid flows to from inlet opening 20, through equally distributed four pod apertures 21 on the positioning block 10, tapered guide surface along guide pad 2 flows into annular liquid flowing resistance passage 4, enter disc liquid flowing resistance passage 14 again, flow into the center hole 24 of spool, flow to the corresponding liquid flowing resistance passage of the spool the other end again by center hole, flow out from liquid outlet opening 23 at last.This valve is a bidirectional control valve, and band arrow curve is a kind of trend of magnetic flow liquid in valve, in addition, also can change the direction that flows to and flow out, and does not influence the performance of its function.
With reference to accompanying drawing 4 and Fig. 5, be positioning device figure of the present invention.The axially locating of valve internal structure contacts assurance by positioning block 10 with the step of valve end cap 19,11, the radial dimension of annular liquid flowing resistance passage 4 cooperates assurance by positioning block 10 with the precision positioning of cylinder barrel 15, and positioning block 10 and magnetic conduction disk 3,13 are connected by locating stud 9.Four counterbores that evenly distribute on positioning block 10 are pod apertures 21, and magnetic flow liquid this four apertures of flowing through from the ingress enter annular liquid flowing resistance passage along the taper guide face.
With reference to accompanying drawing 6, be structure expander graphs of the present invention.The magnetic flow liquid control valve of this expansion has two field coils simultaneously.The magnetic flow liquid control valve of this expansion has increased a magnetic conduction disk, connecting pin, spool, magnetic conduction coil holder and one group of field coil have not increased by two disc liquid flowing resistance passages and an annular liquid flowing resistance passage thus, can produce bigger liquid flowing resistance.Neither magnetic conduction coil holder one end adopts the sealing of O RunddichtringO, and the other end adopts the sealer sealing.In order to reduce size, but also the sealer sealing is adopted at two ends simultaneously.Certainly, according to using needs, can also increase the number of magnetic conduction disk.Every increase by one magnetic conduction disk will increase by two plane liquid flowing resistance passages and an annular liquid flowing resistance passage.Its liquid flow path direction and magnetic field generation figure are similar to Fig. 3 and Fig. 2, and in this figure, band arrow irregular curve is the liquid flow path direction, and the flow direction of liquid also is two-way; Band arrow regular curve is a magnetic line of force direction.
With reference to accompanying drawing 6, be the application example of this magnetic flow liquid control valve, by the bridge-type valve road that the magnetic flow liquid control valve is formed, wherein A, B, C, D are the magnetic flow liquid control valve, catercorner is one group.When the field coil electric current of magnetic rheological valve reaches maximum value (electric current when magnetic field reaches capacity), the magnetic flow liquid control valve is to the liquid flowing resistance maximum of the magnetic flow liquid that passes through.Catercorner one group of valve is in the electric current maximum rating, and (electric current is zero) can be approximated to be one group of valve and close when another group was in the electric current minimum state, and another organizes opening of valves.Switch the state of two groups of valves like this, under the driving of pump, the direction of flow of fluid changes, and changes the moving direction of final controlling element.Because the speed of response of magnetic flow liquid control valve is the millisecond order of magnitude, can improve the speed of response of whole hydraulic system.Add feedback control, can utilize final controlling element to reach pinpoint purpose.
With reference to accompanying drawing 7, be of the application of this magnetic flow liquid control valve as the bypass vibration damper.The liquid flowing resistance passage of magnetic flow liquid control valve E can serve as the damping force passage of the magnetorheological controllable damper of bypass type system when coil electricity.
Claims (9)
1. the magnetic flow liquid control valve that has two kinds of liquid flowing resistance passages, include cylinder barrel, spool, field coil and valve end cap, the working medium of control valve is a magnetic flow liquid, control valve is connected with pipe joint in the magnetic flow liquid hydraulic circuit by the screw thread on the two end valve end caps, field coil is wound on the outer coil holder of spool, the lead of drawing of field coil is drawn valve body, it is characterized in that: the end face at spool and non-magnetic conduction coil holder is provided with the magnetic conduction disk, and pad is set between magnetic conduction disk and this end face constitutes the gap, form disc liquid flowing resistance passage, form annular liquid flowing resistance passage between the outer ring surface of magnetic conduction disk and the cylinder barrel again, be communicated with the center hole of valve core inside by disc liquid flowing resistance passage, form a complete liquid chunnel.
2. magnetic flow liquid control valve according to claim 1, it is characterized in that: field coil, non-magnetic conduction coil holder and spool can be provided with two groups or more, separate by magnetic conduction disk and pad between group and the group, all form disc liquid flowing resistance passage between the non-magnetic conduction coil holder of magnetic conduction disk and each group, form annular liquid flowing resistance passage with cylinder barrel, the liquid flowing resistance passage of two kinds of forms and the center hole of valve core inside are communicated with from beginning to end, form a complete liquid chunnel.
3. magnetic flow liquid control valve according to claim 1 and 2, it is characterized in that: between magnetic conduction disk and valve end cap, positioning block is set as precision positioning device, adopt the transition fit of precision positioning between positioning block and the cylinder barrel, positioning block is connected with spool by locating stud, guarantee that the gap has uniform radial dimension between magnetic conduction disk and the cylinder barrel, equally distributed pod apertures is arranged on the positioning block.
4. magnetic flow liquid control valve according to claim 1 and 2 is characterized in that: the magnetic conduction disk is connected with spool by magnetic conduction connecting pin not, and pad is enclosed within not on the magnetic conduction connecting pin.
5. magnetic flow liquid control valve according to claim 3 is characterized in that: be provided with the guide pad with taper guide face between magnetic conduction disk and positioning block.
6. magnetic flow liquid control valve according to claim 5 is characterized in that: the edge designs that the end face of magnetic conduction disk combines with guide pad is a round-corner transition.
7. magnetic flow liquid control valve according to claim 1 and 2 is characterized in that: adopt the seal ring sealing between non-magnetic conduction coil holder two ends and the cylinder barrel.
8. magnetic flow liquid control valve according to claim 5 is characterized in that: described spool and cylinder barrel employing permeability height, the low-carbon steel material that coercivity is low, positioning block, guide pad, pad adopt non-magnet material.
9. according to claim 1 or 2 described magnetic flow liquid control valves, it is characterized in that: the valve end cap adopts with cylinder barrel and is threaded, and seals with seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100226574A CN1314903C (en) | 2004-05-28 | 2004-05-28 | Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100226574A CN1314903C (en) | 2004-05-28 | 2004-05-28 | Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels |
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| CN1584347A CN1584347A (en) | 2005-02-23 |
| CN1314903C true CN1314903C (en) | 2007-05-09 |
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| CNB2004100226574A Expired - Fee Related CN1314903C (en) | 2004-05-28 | 2004-05-28 | Magnetic flow liquid variable controllnig valve with two liquid flow resistance channels |
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Cited By (1)
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|---|---|---|---|---|
| WO2021262588A1 (en) * | 2020-06-21 | 2021-12-30 | Shoreline Design And Manufacturing | Magnetorheological fluid valve and variable manufacturing mold |
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| CN101864977A (en) * | 2010-04-23 | 2010-10-20 | 黑龙江科技学院 | Control system of coal mine underground hydraulic support frame reversing mechanism |
| CN102121509B (en) * | 2010-12-09 | 2013-01-23 | 重庆大学 | Magnetorheological damper with annular and disc-shaped liquid flow resistance channels simultaneously |
| CN102691688B (en) * | 2012-06-19 | 2014-12-24 | 华东交通大学 | Three-stage pressure regulating double-coil type magneto-rheological valve |
| CN104500787B (en) * | 2015-01-02 | 2016-10-26 | 华东交通大学 | A kind of mixed flow dynamic formula MR valve |
| CN104847830B (en) * | 2015-03-27 | 2017-03-01 | 浙江大学 | A kind of universal compound clearance magnetorheological damping unit and MR valve |
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