CN106895037A - Permanent magnetic spring direct-acting overflow valve based on air gap combination - Google Patents
Permanent magnetic spring direct-acting overflow valve based on air gap combination Download PDFInfo
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- CN106895037A CN106895037A CN201710265093.4A CN201710265093A CN106895037A CN 106895037 A CN106895037 A CN 106895037A CN 201710265093 A CN201710265093 A CN 201710265093A CN 106895037 A CN106895037 A CN 106895037A
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- valve
- magnetic spring
- permanent magnetic
- permanent
- valve element
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention provides a kind of permanent magnetic spring direct-acting overflow valve based on air gap combination, including：Permanent magnetic spring component, the permanent magnetic spring component includes two permanent magnetism pedestals and valve element, described two permanent magnetism pedestals include being separately positioned on the upper permanent magnetism pedestal and lower permanent magnetism pedestal above and below the valve element, the first active force is formed between wherein described valve element and the upper permanent magnetism pedestal and form the second active force between the valve element and the lower permanent magnetism pedestal, first active force makes a concerted effort to form the spring force of the permanent magnetic spring component with second active force, for acting on valve element to open and close overflow valve simultaneously with hydraulic coupling.
Description
Technical field
The present invention relates to Hydraulic Elements, relate more specifically to the permanent magnetic spring Direct Action Type overflow based on air gap combination mode
Valve.
Background technology
Overflow valve as the servo energy pressure regulatory element, Main Function is level pressure and overflow, when as safety valve
Can also play a part of to prevent overload and security protection when using.Direct-acting overflow valve is direct by the pressure oil in system
Act on and balanced each other with spring force etc. on valve element, to control the switching motion of valve element.Overflow valve is used mostly spiral compression spring
As voltage regulation component and reset element.There is fatigue fracture, hydrogen embrittlement fracture, corrosion fracture, lax, plasticity change in spiral compression spring
The failure modes such as shape, permanent deformation, once there is fracture or the failure such as lax, stuck in spring failure, it will and lose hydraulic system
Pressure, causes associated steerable system out of control, and more serious catastrophic effect may be brought for space flight servo-drive system.
Permanent magnetic spring is magnetic force-air gap performance that metalloid spring is realized using the magnetic force between permanent magnet-air gap characteristic,
It is small, small and without lubrication without abrasion, low in energy consumption, long lifespan, noise that noncontact feature in structure makes it have movable piece quality
The advantages of.
In recent years, continuing to bring out with high-performance magnetism iron material, the low cost of permanent magnetic spring, small size, high thrust with
And the performance advantage of excellent resistance to circulation impact is more highlighted, it is expected to substitution mechanical spring is used for Quick mechanical response means,
Had a wide range of applications in many engineering fields such as machinery, chemical industry, automobile, electric power, national defence and nuclear industry, while it is to carrying
The running speed and precision of equipment high, and it is significant equipment is adapted to particular job environment.
In Hydraulic Field, currently exist using attraction design permanent-magnent one-way valve and the permanent magnetism between magnetic spring
Formula unloading valve.In addition, also someone has carried out theoretical and experimental study to the direct-acting overflow valve based on permanent magnetism compression spring, but do not have
There is Related product, it passes through to replace spiral compression spring using permanent magnetic spring, it is to avoid above-mentioned failure or the failure such as stuck.So
And, the permanent magnetic spring rigidity of the direct-acting overflow valve that should be based on permanent magnetism compression spring is very big, and valve can be caused when overflow valve is opened
Core is shaken, and this can cause very big pressure oscillation, so as to influence to open and close characteristic and voltage regulation performance.In addition, being subject to overflow valve quality
The constraint of volume, the spring force of permanent magnetism compression spring is restricted, and can only meet a range of overflow valve operating pressure
It is required that.
The content of the invention
In view of problem above, the invention provides a kind of permanent magnetic spring direct-acting overflow valve based on air gap combination mode,
Its by the two ends of valve element increase by a pair of permanent magnets so that suction and repulsion compound action to form spring force, by adjustment
Air gap between permanent magnet volume and permanent magnet obtains preferable stiffness curve, and when reducing unlatching spring force change so that
Reduce overflow valve pressure oscillation；But also can realize meeting under smaller volume the requirement of permanent magnetic spring power, so as to increase
The thrust-weight ratio of overflow valve so that the structure of overflow valve is compacter.
According to an aspect of the present invention, a kind of permanent magnetic spring direct-acting overflow valve, including：
Permanent magnetic spring component, the permanent magnetic spring component includes two permanent magnetism pedestals and valve element, described two permanent magnetism pedestals
Including the upper permanent magnetism pedestal and lower permanent magnetism pedestal that are separately positioned on above and below the valve element, wherein the valve element with it is described
The first active force is formed between upper permanent magnetism pedestal and the second active force, institute is formed between the valve element and the lower permanent magnetism pedestal
State the first active force and second active force to make a concerted effort to form the spring force of the permanent magnetic spring component, for same with hydraulic coupling
When the valve element is acted on to open and close the overflow valve.
According to embodiment, permanent magnetic spring direct-acting overflow valve of the invention also includes：
Upper lid and valve body, the upper lid and the valve seal connect to be formed for installing the permanent magnetic spring component
Cavity, wherein the upper permanent magnetism pedestal is movably disposed at the top of the cavity, first is formed between the valve element
Air gap, and the lower permanent magnetism pedestal is fixed on the bottom of the cavity, and interstice is formed between the valve element.
According to embodiment, permanent magnetic spring direct-acting overflow valve of the invention also includes：
Adjusting screw, the adjusting screw is arranged on the upper lid, for adjusting the position of the upper permanent magnetism pedestal to change
Become the size of first air gap.
According to embodiment, permanent magnetic spring direct-acting overflow valve of the invention also includes：
Clamp nut, the clamp nut is threadedly coupled with the adjusting screw, for the position of fixed upper permanent magnetism pedestal.
According to embodiment, permanent magnetic spring direct-acting overflow valve of the invention also includes：
Entrance, the entrance is arranged on the valve body and is connected with the cavity, for liquid flow through it is described enter
Hydraulic coupling is formed during mouth；And
Outlet, the outlet is arranged on the valve body and is connected with the cavity, for being more than in the hydraulic coupling
The spring force with the entrance so as to during the valve core movement, connect to realize overflow.
According to embodiment, wherein, first active force is repulsion and second active force is attraction.
According to embodiment, wherein, the upper permanent magnetism pedestal is magnet of the same name and the lower permanent magnetism pedestal with the valve element
It is different in nature permanent magnet with the valve element, to cause that first active force is repulsion and second active force is attraction.
Brief description of the drawings
Fig. 1 is the structural representation of the permanent magnetic spring direct-acting overflow valve based on air gap combination according to embodiments of the present invention
Figure.
Fig. 2 is the permanent magnetic spring group of the permanent magnetic spring direct-acting overflow valve based on air gap combination according to embodiments of the present invention
The structural representation of part.
Fig. 3 is the valve for illustrating the permanent magnetic spring direct-acting overflow valve based on air gap combination according to embodiments of the present invention
The schematic diagram of core stressing conditions.
Specific embodiment
The permanent magnetic spring Direct Action Type based on air gap combination according to embodiments of the present invention is illustrated referring to the drawings to overflow
Stream valve.
Fig. 1 schematically shows the permanent magnetic spring direct-acting overflow valve based on air gap combination according to embodiments of the present invention
Structure.Fig. 2 further shows the permanent magnetism of the permanent magnetic spring direct-acting overflow valve based on air gap combination according to embodiments of the present invention
The structural representation of spring assembly.Fig. 3 is straight for illustrating the permanent magnetic spring based on air gap combination according to embodiments of the present invention
The schematic diagram of the valve element stressing conditions of dynamic formula overflow valve.As Figure 1-3, the permanent magnetic spring direct-acting overflow valve in the present embodiment
Including：Permanent magnetic spring component 4,5,7, it includes two permanent magnetism pedestals 4,7 and valve element 5, and two permanent magnetism pedestals 4,7 include setting respectively
Put the upper permanent magnetism pedestal 4 and lower permanent magnetism pedestal 7 above and below valve element 5.
As Figure 2-3, the first directed force F is formed between valve element 5 and upper permanent magnetism pedestal 41, and with lower permanent magnetism pedestal 7
Between form the second directed force F2, the first directed force F1With the second directed force F2Make a concerted effort to form the spring force of permanent magnetic spring component,
For with hydraulic coupling FpAct on valve element 5 to open and close overflow valve simultaneously.
As shown in Figure 1-2, the permanent magnetic spring direct-acting overflow valve in the present embodiment also include upper lid 3 and valve body 6, it is described on
Lid 3 and the valve body 6 are tightly connected to form the cavity for installing permanent magnetic spring component, wherein upper permanent magnetism pedestal 4 may move
Be arranged on the top of cavity, form the first air gap L with valve element 5g1, and lower permanent magnetism pedestal 7 is fixed on the bottom of cavity, with
Interstice L is formed with valve element 5g2。
As shown in Figure 1-2, the permanent magnetic spring direct-acting overflow valve in the present embodiment also includes adjusting screw 1, and it is arranged on
On upper lid 3, for the size for adjusting the position of upper permanent magnetism pedestal 4 to change the first air gap Lg1.
As shown in figure 1, permanent magnetic spring direct-acting overflow valve of the invention also includes clamp nut 2, itself and the spiral shell of adjusting screw 1
Line is connected, for the position of fixed upper permanent magnetism pedestal 4.
As shown in figure 1, the permanent magnetic spring direct-acting overflow valve in the present embodiment also includes：
Entrance 8, it is arranged on valve body 6 and is connected with cavity, for forming hydraulic coupling F when liquid flows through entrancep；
And
Outlet 9, it is arranged on valve body 6 and is connected with cavity, in hydraulic coupling FpMore than spring force F1+F2So that
When valve element 5 is moved, connect to realize overflow with entrance 8.
In the present embodiment, upper permanent magnetism pedestal 4 and valve element 5 are magnet of the same name and lower permanent magnetism pedestal 7 and valve element 5 is the opposite sex
Permanent magnet, to cause the first directed force F1It is repulsion and the second directed force F2It is attraction.
Specifically, the first and second active forces to make a concerted effort be the power of close port, constitute the spring of permanent magnetic spring component
Power, the hydraulic coupling being subject to valve element 5 balances each other.As inlet pressure PsWhen relatively low, act on the power on valve element 5 and be also not enough to overcome
During the active force of permanent magnetic spring component, valve element 5 is in the bottom of cavity, and valve port is closed, by entrance and outlet.Work as entrance
Pressure PsConstantly increase and reach set pressure, when acting on the pressure differential on valve element 5 more than permanent magnetic spring power, valve element 5 is promoted,
And balance is reached in a certain position, entrance 8 and outlet 9 are communicated, and realize overflow, and inlet pressure keeps constant.Now inlet pressure
Balanced each other with spring force, be a value for determination, here it is the level pressure principle of overflow valve.The liquid of system is by high voltage supply pipe
Lu Hou, not every pressure is all utilized, and some will return to hydraulic pressure unit with loop, thus form outlet pressure
Power Pt, in general, outlet pressure PtThan inlet pressure PsIt is much lower.Finely tuned forever by the screw-in and back-out of adjusting screw 1
The position of magnetic pedestal 4, changes the air-gap separation between permanent magnetism pedestal and valve element, and then adjust setting pressure.
Repulsion F is produced between upper permanent magnetism pedestal 4 and valve element 51, constitute repulsion permanent magnet, lower permanent magnetism pedestal 7 and valve element 5
Between produce attraction F2, constitute attraction permanent magnet.Valve element 5 when being lifted by hydraulic coupling, upper permanent magnetism pedestal 4 and valve
Air gap L between core 5g1Reduce, F1Increase, the air gap L between lower permanent magnetism pedestal 7 and valve element 5g2Increase, F2Reduce, attraction and
Repulsion causes the mode as air gap combination mode that changes of spring force and spring rate with the change of air gap.
Valve port opening is x, and x changes are very small when reaching set pressure, thus the rigidity of repulsion spring may be considered not
Become, be k1, the rigidity of attraction spring is k it is also assumed that be constant2。
As shown in figure 3, when valve element 5 will just be promoted, the stress equation of valve element 5 is
F1+F2=Fp (1)
F1+k1x+F2-k2x+Fd=Fp+ΔFp (2)
Wherein FdHydraulic power, its be liquid by valve port when, due to the change of flow direction and flow velocity cause liquid move
The change of amount, and make the additional forces that valve element is subject to.FpIt is hydraulic coupling when valve element is just promoted, Δ FpIt is to increase after valve element is promoted
Plus hydraulic coupling.(1) obtained with (2) simultaneous
(k1-k2)x+Fd=Δ Fp (3)
The global stiffness K=k of the permanent magnetic spring component based on air gap combination1-k2, relative to permanent magnetism compression spring, based on air gap
The permanent magnetic spring component of combination can be adjusted in the case where spring force size is not changed by adjusting permanent magnet volume and air gap
Whole k1And k2, preferable spring global stiffness K is then obtained, this is not available for permanent magnetism compression spring.And increase K2Value
A part of hydraulic power F can be offsetd。
In sum, the invention provides a kind of permanent magnetic spring direct-acting overflow valve based on air gap combination, due to spiral
The rigidity of compression spring is relevant with line footpath and the number of effective coils, and wanting to reach certain thrust needs spiral compression spring volume larger,
And permanent magnetic spring of the invention can obtain larger thrust in less magnet gap, so as to reduce the quality of element and shared
Volume, realize system compact and lightweight.Also, the permanent magnet of the permanent magnetic spring component based on air gap combination is distributed in
Valve element two ends, and the permanent magnet of permanent magnetism compression spring is only distributed in the upper end of valve element, in the case where identical spring force is produced, based on gas
The diameter of the permanent magnetic spring component of gap combination is more much smaller than permanent magnetism compression spring, and structure seems more compact.In addition, as described above,
Permanent magnetic spring direct-acting overflow valve based on air gap combination of the invention can supplement part hydraulic power, so as to reduce pressure wave
It is dynamic.
Obviously, above-described embodiment is only intended to clearly illustrate example of the present invention, and is not to of the invention
The restriction of implementation method.For those of ordinary skill in the field, it can also be made on the basis of the above description
The change or variation of its multi-form.There is no need and unable to be exhaustive to all of implementation method.And these belong to this hair
Obvious change that bright spirit is extended out or among changing still in protection scope of the present invention.
Claims (7)
1. a kind of permanent magnetic spring direct-acting overflow valve, including：
Permanent magnetic spring component, the permanent magnetic spring component includes two permanent magnetism pedestals and valve element, and described two permanent magnetism pedestals include
Be separately positioned on upper permanent magnetism pedestal and lower permanent magnetism pedestal above and below the valve element, wherein the valve element with it is described on forever
The first active force is formed between magnetic pedestal and the second active force is formed between the valve element and the lower permanent magnetism pedestal, described
One active force makes a concerted effort to form the spring force of the permanent magnetic spring component with second active force, for making with hydraulic coupling simultaneously
For the valve element opening and closing the overflow valve.
2. permanent magnetic spring direct-acting overflow valve as claimed in claim 1, also includes：
Upper lid and valve body, the chamber of the upper lid and valve seal connection to be formed for installing the permanent magnetic spring component
Body, wherein the upper permanent magnetism pedestal is movably disposed at the top of the cavity, to form the first gas between the valve element
Gap, and the lower permanent magnetism pedestal is fixed on the bottom of the cavity, and interstice is formed between the valve element.
3. permanent magnetic spring direct-acting overflow valve as claimed in claim 2, also includes：
Adjusting screw, the adjusting screw is arranged on the upper lid, for adjusting the position of the upper permanent magnetism pedestal to change
State the size of the first air gap.
4. permanent magnetic spring direct-acting overflow valve as claimed in claim 3, also includes：
Clamp nut, the clamp nut is threadedly coupled with the adjusting screw, the position for fixing the upper permanent magnetism pedestal.
5. the permanent magnetic spring direct-acting overflow valve as described in any one of claim 2-4, also includes：
Entrance, the entrance is arranged on the valve body and is connected with the cavity, for when liquid flows through the import
Form hydraulic coupling；And
Outlet, the outlet is arranged on the valve body and is connected with the cavity, described for being more than in the hydraulic coupling
Spring force with the entrance so as to during the valve core movement, connect to realize overflow.
6. permanent magnetic spring direct-acting overflow valve as claimed in claim 1, wherein, first active force is repulsion and described
Second active force is attraction.
7. permanent magnetic spring direct-acting overflow valve as claimed in claim 5, wherein, the upper permanent magnetism pedestal and the valve element are same
The name magnet and lower permanent magnetism pedestal and the valve element are different in nature permanent magnets, with cause first active force be repulsion and
Second active force is attraction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265093.4A CN106895037B (en) | 2017-04-20 | 2017-04-20 | Permanent magnetic spring direct-acting overflow valve based on air gap combination |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710265093.4A CN106895037B (en) | 2017-04-20 | 2017-04-20 | Permanent magnetic spring direct-acting overflow valve based on air gap combination |
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| Publication Number | Publication Date |
|---|---|
| CN106895037A true CN106895037A (en) | 2017-06-27 |
| CN106895037B CN106895037B (en) | 2018-07-13 |
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| CN201710265093.4A Expired - Fee Related CN106895037B (en) | 2017-04-20 | 2017-04-20 | Permanent magnetic spring direct-acting overflow valve based on air gap combination |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296116A (en) * | 2019-04-03 | 2019-10-01 | 成都航天烽火精密设备制造有限责任公司 | A kind of thread cartridge overflow valve based on Halbach array magnetic patch |
| CN111795033A (en) * | 2020-07-16 | 2020-10-20 | 中车青岛四方车辆研究所有限公司 | Direct-acting overflow valve |
| CN115405710A (en) * | 2022-09-01 | 2022-11-29 | 唐山传奇科技有限公司 | Self-closing high-speed pressure relief valve |
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| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN102913501A (en) * | 2012-11-22 | 2013-02-06 | 重庆红江机械有限责任公司 | Direct-acting type ratio overflow valve |
| CN103244498A (en) * | 2013-05-17 | 2013-08-14 | 浙江科技学院 | Precision pressure regulating type direct-acting overflow valve |
| CN103470561A (en) * | 2013-09-03 | 2013-12-25 | 浙江大学 | Proportional overflow valve |
| CN104214156A (en) * | 2014-08-20 | 2014-12-17 | 海门市油威力液压工业有限责任公司 | High-flow ultrahigh-pressure directly operated type proportional overflow valve |
| CN205101618U (en) * | 2015-11-19 | 2016-03-23 | 中国海洋大学 | Move straight ejector half overflow valve of disk seat formula |
| CN106151619A (en) * | 2016-08-11 | 2016-11-23 | 张广 | A kind of low pressure direct-acting overflow valve based on magnetic rheology effect |
| CN106352123A (en) * | 2016-08-11 | 2017-01-25 | 张广 | Pilot-operated relief valve based on magneto-rheological effect |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102678645A (en) * | 2012-05-31 | 2012-09-19 | 常德中联重科液压有限公司 | Direct-acting overflow valve, direct-acting overflow valve group and hydraulic overflow loop |
| CN102913501A (en) * | 2012-11-22 | 2013-02-06 | 重庆红江机械有限责任公司 | Direct-acting type ratio overflow valve |
| CN103244498A (en) * | 2013-05-17 | 2013-08-14 | 浙江科技学院 | Precision pressure regulating type direct-acting overflow valve |
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| CN205101618U (en) * | 2015-11-19 | 2016-03-23 | 中国海洋大学 | Move straight ejector half overflow valve of disk seat formula |
| CN106151619A (en) * | 2016-08-11 | 2016-11-23 | 张广 | A kind of low pressure direct-acting overflow valve based on magnetic rheology effect |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110296116A (en) * | 2019-04-03 | 2019-10-01 | 成都航天烽火精密设备制造有限责任公司 | A kind of thread cartridge overflow valve based on Halbach array magnetic patch |
| CN110296116B (en) * | 2019-04-03 | 2024-09-13 | 成都航天烽火精密设备制造有限责任公司 | Threaded plug-in overflow valve based on Halbach array magnetic block |
| CN111795033A (en) * | 2020-07-16 | 2020-10-20 | 中车青岛四方车辆研究所有限公司 | Direct-acting overflow valve |
| CN115405710A (en) * | 2022-09-01 | 2022-11-29 | 唐山传奇科技有限公司 | Self-closing high-speed pressure relief valve |
| CN115405710B (en) * | 2022-09-01 | 2023-06-09 | 唐山传奇科技有限公司 | Self-closing high-speed relief valve |
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|---|---|
| CN106895037B (en) | 2018-07-13 |
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