CN106352123A - Pilot-operated relief valve based on magneto-rheological effect - Google Patents
Pilot-operated relief valve based on magneto-rheological effect Download PDFInfo
- Publication number
- CN106352123A CN106352123A CN201610676063.8A CN201610676063A CN106352123A CN 106352123 A CN106352123 A CN 106352123A CN 201610676063 A CN201610676063 A CN 201610676063A CN 106352123 A CN106352123 A CN 106352123A
- Authority
- CN
- China
- Prior art keywords
- pilot
- valve element
- magneto
- main valve
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/06—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with special arrangements for adjusting the opening pressure
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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
- F15B13/022—Flow-dividers; Priority valves
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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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
-
- 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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/53—Means for adjusting damping characteristics by varying fluid viscosity, e.g. electromagnetically
- F16F9/532—Electrorheological [ER] fluid dampers
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
Abstract
The invention relates to a pilot-operated relief valve based on a magneto-rheological effect. The pilot-operated relief valve is mainly used for conducting pressurization or safety protection on a hydraulic system in a precise hydraulic control system. The pilot-operated relief valve comprises a valve body, a seal ring, magneto-rheological liquid, an isolation ring, a pilot valve element, an electromagnetic coil, a main valve element and a spring. Two chambers are formed in the valve body. The pilot valve element is matched with the upper chamber. The pilot valve element and the inner surface of the left part of the upper chamber form a movement pair. The main valve element is matched with the lower chamber, and the main valve element and the inner surface of the lower chamber form a movement pair. An annular groove is formed in the pilot valve element. The electromagnetic coil surrounds in the annular groove. The pilot valve element and the inner surface of the right part of the upper chamber are in clearance fit. A gap is filled with the magneto-rheological liquid and sealed through the seal ring. The magneto-rheological liquid is isolated from the electromagnetic coil through the isolation ring. The main valve element is hollow inside, the spring is installed in the space, and the two ends of the spring are fixed to the valve body and the main valve element respectively.
Description
Technical field
The present invention relates to a kind of pilot operated compound relief valve, especially relate to a kind of pilot-operated type overflow based on magnetic rheology effect
Valve.
Background technology
Hydraulic executing system is not only widely used in civilian machining, vehicle and building trade, and space flight, aviation and
Also it is widely used in war products.Hydraulic control valve as one of the key control unit of hydraulic actuator, always
Directly influence static characteristic, dynamic characteristic and its functional reliability of hydraulic actuator.Inside traditional hydraulic control valve
Due to there is more moving mechanical member, not only complex structure, volume is big, processing request is high, easy abrasion, high cost, and
And also have such problems as that wayward, low-response, work noise be big, functional reliability is not high.Therefore seek a kind of structure simple,
Reliable in action, hydraulic control valve easily controllable, that response is fast are the problems that hydraulic actuator is eager to solve.
Magnetic flow liquid is made up of micron order ferromagnetic particle, base fluid, additive.Under the conditions of zero magnetic field intensity, magnetic current
Become liquid and show as good fluidity, the low new ton fluid of viscosity, under conditions of having externally-applied magnetic field, the instantaneous (millisecond of magnetic flow liquid
Magnitude) to high viscosity, lazy flow bingham transitional fluid.Research shows that the shear yield stress of magnetic flow liquid can reach
50-100kp, between -40 DEG C -150 DEG C, the Reversible Cycle change frequency of magnetic flow liquid is about 3,000,000 to operating temperature range
Secondary.
It is operated under shear mode, the damping force of magnetic flow liquid can be calculated with below equation:
In formula: η is viscosity (slope of shear stress after the surrender of actual measurement) after the liquid surrender unrelated with magnetic field intensity；v
Shear strain rate for fluid；τyFor mangneto shear yield stress；Sgn (v) considers the reciprocating motion of piston.
Content of the invention
The technical problem to be solved in the present invention is to provide a kind of pilot operated compound relief valve based on magnetic rheology effect.Device is main
To hydraulic system level pressure or carry out safeguard protection, flow into electric current in solenoid in precise hydraulic control system by controlling
The shear yield stress to adjust magnetic flow liquid for the size, and then electrodeless tune is carried out to the pressure that guide valve core can be forced to reach surrender
Section, have the advantages that structure is simple, reliable in action, easily controllable, response fast.
In order to effectively realize function as above and feature, the present invention to realize as follows: this device
Mainly by valve body, sealing ring, magnetic flow liquid, cage ring, guide valve core, solenoid, main valve plug, spring forms.Valve inner
Have two chambers, guide valve core is coordinated with upper chamber, and form moving sets with upper chamber left-hand component inner surface, main valve plug with
Chamber coordinates, and forms moving sets with bottom chamber surface；Guide valve core has annular groove, solenoid around in this annular groove, pilot valve
Core becomes gap to coordinate with upper chamber right-hand component inner surface, and magnetic flow liquid riddles this gap, and is sealed by sealing ring, passes through
Magnetic flow liquid is isolated by cage ring with solenoid；Main valve plug inner hollow, spring is installed in this space, spring two respectively with
Valve body and main valve plug are fixed.
A kind of having the active effect that of the pilot operated compound relief valve based on magnetic rheology effect of the present invention is mainly used in essence
To hydraulic system level pressure or carry out safeguard protection in close hydraulic control system, by controlling the size flowing into electric current in solenoid
To adjust the shear yield stress of magnetic flow liquid, and then electrodeless regulation is carried out to the pressure that guide valve core can be forced to reach surrender, tool
Have the advantages that structure is simple, reliable in action, easily controllable, response fast.
Brief description
Fig. 1 is a kind of internal structure principle schematic of the pilot operated compound relief valve based on magnetic rheology effect of the present invention.
Specific embodiment
The present invention is described in more detail with reference to the accompanying drawings and examples.
As shown in figure 1, a kind of pilot operated compound relief valve based on magnetic rheology effect of the present invention, this device is mainly by valve body 1, close
Seal 2, magnetic flow liquid 3, cage ring 4, guide valve core 5, solenoid 6, main valve plug 8, spring 9 form.Two are had inside valve body 1
Chamber, guide valve core 5 and upper chamber's cooperation, and form moving sets with upper chamber left-hand component inner surface, main valve plug 8 and lower chambers are joined
Close, and form moving sets with bottom chamber surface；Guide valve core 5 has annular groove, solenoid 6 around in this annular groove, guide valve core 5 with
Upper chamber's right-hand component inner surface become gap coordinate, magnetic flow liquid 3 riddles this gap, and is sealed by sealing ring 2, by every
From circle 4, magnetic flow liquid 3 is isolated with solenoid 6；Main valve plug 8 inner hollow, spring 9 is installed in this space, and spring 9 two is divided
Not with valve body 1 and main valve plug 8 fixation.
Solenoid 6 is connected with the electric current of some strength, thus being formed between valve body 1, magnetic flow liquid 3 and guide valve core 5
The magnetic loop 7 of closing so that magnetic flow liquid 3 has certain shear yield stress, when fluid is by valve as illustrated by the arrows in fig. 1
Door entrance flows into, and while the valve export that fluid passes through as illustrated by the arrows in fig. 1 again flows out, has sub-fraction fluid to pass through damping
Empty c flows out, thus producing a hydraulic coupling to end face a, when this hydraulic coupling is less than the pressure that guide valve core 5 can be forced to produce motion
When, guide valve core 5 remains stationary state, fluid does not produce overflow, but when the fluid flow of porch increases, so as to end face
When the hydraulic coupling that a produces is more than the pressure that guide valve core 5 can be forced to produce motion, guide valve core 5 is promoted to move, fluid overflows from b mouth
Stream.And the shear yield stress of magnetic flow liquid 3 can be controlled by controlling the size flowing into the electric current in solenoid 6,
And then control the pressure that guide valve core 5 can be forced to produce motion, electrodeless regulation is carried out to it.
Claims (1)
1. a kind of pilot operated compound relief valve based on magnetic rheology effect, this overflow valve mainly by valve body, sealing ring, magnetic flow liquid, every
From circle, guide valve core, solenoid, main valve plug, spring composition；It is characterized in that: have two chambers inside described valve body (1),
Described guide valve core (5) and upper chamber coordinate, and form moving sets with upper chamber left-hand component inner surface, described main valve plug (8) with
Lower chambers coordinate, and form moving sets with bottom chamber surface；Described guide valve core (5) has annular groove, and solenoid (6) is around here
In annular groove, guide valve core (5) becomes gap to coordinate with upper chamber right-hand component inner surface, and described magnetic flow liquid (3) riddles this gap,
And sealed by sealing ring (2), by cage ring (4), magnetic flow liquid (3) is isolated with solenoid (6)；Described main valve plug (8)
Inner hollow, described spring (9) is installed in this space, and spring (9) two is fixing with valve body (1) and main valve plug (8) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676063.8A CN106352123A (en) | 2016-08-11 | 2016-08-11 | Pilot-operated relief valve based on magneto-rheological effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610676063.8A CN106352123A (en) | 2016-08-11 | 2016-08-11 | Pilot-operated relief valve based on magneto-rheological effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106352123A true CN106352123A (en) | 2017-01-25 |
Family
ID=57844220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610676063.8A Pending CN106352123A (en) | 2016-08-11 | 2016-08-11 | Pilot-operated relief valve based on magneto-rheological effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106352123A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106895037A (en) * | 2017-04-20 | 2017-06-27 | 北京航空航天大学 | Permanent magnetic spring direct-acting overflow valve based on air gap combination |
| JP2018141487A (en) * | 2017-02-27 | 2018-09-13 | いすゞ自動車株式会社 | Relief valve control device and relief valve control method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110217186A1 (en) * | 2010-03-05 | 2011-09-08 | Hitachi, Ltd | Fuel pump |
| CN202629276U (en) * | 2012-06-08 | 2012-12-26 | 浙江师范大学 | Magnetorheological fluid overflow valve |
| CN204082741U (en) * | 2014-08-31 | 2015-01-07 | 浙江师范大学 | A kind of have relative displacement self-sensing diverter valve based on magnetic rheology effect |
| CN104632745A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Sequence valve with magneto-rheological pilot valve |
| CN104632744A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Magneto-rheological pilot valve |
| CN104633233A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Overflow valve with magneto-rheological pilot valve |
-
2016
- 2016-08-11 CN CN201610676063.8A patent/CN106352123A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110217186A1 (en) * | 2010-03-05 | 2011-09-08 | Hitachi, Ltd | Fuel pump |
| CN202629276U (en) * | 2012-06-08 | 2012-12-26 | 浙江师范大学 | Magnetorheological fluid overflow valve |
| CN204082741U (en) * | 2014-08-31 | 2015-01-07 | 浙江师范大学 | A kind of have relative displacement self-sensing diverter valve based on magnetic rheology effect |
| CN104632745A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Sequence valve with magneto-rheological pilot valve |
| CN104632744A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Magneto-rheological pilot valve |
| CN104633233A (en) * | 2015-02-11 | 2015-05-20 | 华侨大学 | Overflow valve with magneto-rheological pilot valve |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018141487A (en) * | 2017-02-27 | 2018-09-13 | いすゞ自動車株式会社 | Relief valve control device and relief valve control method |
| CN106895037A (en) * | 2017-04-20 | 2017-06-27 | 北京航空航天大学 | Permanent magnetic spring direct-acting overflow valve based on air gap combination |
| CN106895037B (en) * | 2017-04-20 | 2018-07-13 | 北京航空航天大学 | Permanent magnetic spring direct-acting overflow valve based on air gap combination |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20170125 |