CN104633233A - Overflow valve with magneto-rheological pilot valve - Google Patents
Overflow valve with magneto-rheological pilot valve Download PDFInfo
- Publication number
- CN104633233A CN104633233A CN201510071719.9A CN201510071719A CN104633233A CN 104633233 A CN104633233 A CN 104633233A CN 201510071719 A CN201510071719 A CN 201510071719A CN 104633233 A CN104633233 A CN 104633233A
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- China
- Prior art keywords
- valve
- pilot valve
- magnetorheological pilot
- magnetorheological
- magneto
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Classifications
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- 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
- F16K31/0644—One-way valve
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- 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
- F16K17/20—Excess-flow valves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetically Actuated Valves (AREA)
- Safety Valves (AREA)
Abstract
An overflow valve with a magneto-rheological pilot valve comprises an overflow valve seat, an overflow valve upper cover plate, a main valve spool, an overflow valve body, a main valve spool spring, a magneto-rheological pilot cone valve, a magneto-rheological pilot valve front cover plate, a magneto-rheological pilot valve body, a magneto-rheological pilot valve piston, an electromagnetic coil, a one-way valve plate, a transition plate, a pressure regulating spring, a pressure regulating block and a pressure regulating screw. The overflow valve upper cover plate, the magneto-rheological pilot valve front cover plate and the magneto-rheological pilot valve body are mounted on the overflow valve seat, a valve rod of the magneto-rheological pilot cone valve penetrates the overflow valve upper cover plate, enters the magneto-rheological pilot valve body and is closely connected with the magneto-rheological pilot valve piston, the magneto-rheological pilot valve piston, the magneto-rheological pilot valve body and the electromagnetic coil form a working gap, so that magneto-rheological fluid flows, a space is formed between the transition plate and the valve rod of the magneto-rheological pilot cone valve, the one-way valve plate can elastically deform in the space, and the pressure regulating screw is rotated and can push the pressure regulating block at the front end of the pressure regulating screw to compress or release the pressure regulating spring.
Description
Technical field
The present invention relates to a kind of relief valve using magnetorheological pilot valve, belong to hydraulic transmission technology field.
Technical background
Relief valve is a kind of pressure controlled valve of extensive use in Hydraulic Power Transmission System, and major function regulates hydraulic system working pressure, and its structure has direct-acting type and leading type, and pilot operated compound relief valve is applicable to the higher system of circuit pressure.The cracking pressure of relief valve is the screw rod by rotating pilot valve core rear, regulates pilot valve initial tension of spring to realize.Be characterized in easy to adjust, flexible, but pressure control range is limited and cannot realize the automation of pressure real-time monitoring and adjustment, sequencing and intellectuality.Magnetic rheological liquid is a kind of viscosity controlled " intellectual material ", can not bear shearing force under normality, and namely very little shearing force just can make it flow; But when being in magnetic field environment, it can bear certain shearing stress, when acting on the shearing force on liquid and being less than its yield stress, magnetic rheological liquid can not flow, and only produces resiliently deformable, only has the liquid when shearing force is greater than yield stress just can flow." intelligence " sex expression of magnetic rheological liquid exists, and its viscosity and shear yield stress are that magnetic intensity is larger, and its viscosity and shear yield stress also increase thereupon with residing change of magnetic field strength.At present based on the deficiency of hydrovalve ubiquity two aspect of magnetic converting technique, first application magnetic rheological liquid is as working medium, and magnetic rheological liquid is by liquid continuous phase and solid particle dispersions phase composition, viscosity is generated heat greatly, easily, cost is high, so be not suitable for being used as hydraulicdriven working medium in a large number; They are two years old, place's working clearance is only comprised in magnetic rheological valve, during valve events, magnetorheological liquid viscosity increases, larger viscous resistance can be born when flowing through in gap thus regulate pilot valve cracking pressure, but when valve is in return stroke, liquid is still in magnetic field and keeps high viscosity, and this makes return stroke also bear large viscous resistance, valve can be caused not reset in time or homing action obviously delayed, add the response time of hydrovalve.
Summary of the invention
Technical problem underlying to be solved by this invention is to provide a kind ofly applies the relief valve that normal hydraulic oil is working medium, it adopts magnetic rheological liquid to be the working medium of pilot valve, controlling water kick valve opening pressure is carried out by regulating the pretightening force of the electric current [strength in magnetorheological pilot valve coil and pilot valve spring, realization regulates and controls real time implementation, automation, intellectuality and increases the object of pressure regulation spectrum, has the feature responding and be swift in motion simultaneously.
In order to solve above-mentioned technical problem, the invention provides a kind of relief valve using magnetorheological pilot valve, comprise relief valve valve seat 1, relief valve upper cover plate 5, valve core of main valve 2, relief valve valve body 3, main valve plug spring 4, magnetorheological pilot valve cone valve 6, magnetorheological pilot valve cover plate 7, magnetorheological pilot valve body 14, magnetorheological pilot valve piston 8, electromagnetic coil 9, check valve sheet 10, overcurrent plate 11, pressure adjusting spring 12, pressure regulation block and screw press 13;
Described relief valve upper cover plate 5, magnetorheological pilot valve front shroud 7, magnetorheological pilot valve body 14 are installed on relief valve valve seat 1; The valve rod of magnetorheological pilot valve cone valve 6, through relief valve upper cover plate 5, is fit in magnetorheological pilot valve body 14, and with magnetorheological pilot valve piston 8 compact siro spinning technology; Forming the working clearance 15 between magnetorheological pilot valve piston 8, magnetorheological pilot valve body 14, electromagnetic coil 9 makes magnetic rheological liquid flow; The iron core of magnetorheological pilot valve piston 8, magnetorheological pilot valve body 14 and electromagnetic coil 9 is high permeability material; Form space between the valve rod of overcurrent plate 11 and magnetorheological pilot valve cone valve 6, check valve sheet 10 can in this space resiliently deformable; Rotate the compression of pressure regulation block or release pressure adjusting spring 12 that screw press 13 can promote its front end.
In a preferred embodiment: the working medium in described relief valve is normal hydraulic oil, the working medium in magnetorheological pilot valve is magnetic flow liquid, and magnetic flow liquid body bulk is at 30-150ml.
In a preferred embodiment: the width of described working clearance 15 is 0.3-3mm, and length is 6-60mm.
In a preferred embodiment: described magnetorheological pilot valve piston 8 is a uniform 3-6 through flow hole 16 near central position, through flow hole centre distance magnetorheological pilot valve piston 8 outer round surface radial distance is greater than 5mm.
In a preferred embodiment: described magnetorheological pilot valve piston 8 installs described check valve sheet 10 and overcurrent plate 11 with the end face at magnetorheological pilot valve cone valve 6 opposite direction place; Described check valve sheet 10 is made up of elastic material, produces elastic strain in the space between overcurrent plate 11 and piston 8 end face, closes or opens through flow hole 16.
In a preferred embodiment: magnetorheological pilot valve body 14 side is installed described pressure adjusting spring 12 and regulated briquetting and the screw press 13 of pressure adjusting spring 12 pretightening force.
In a preferred embodiment: described relief valve working pressure regulation range is 1-40MPa, and peak rate of flow is 3000L/min.
Compared to prior art, technological scheme of the present invention possesses following beneficial effect:
1. pilot operated compound relief valve is combined with magnetorheological pilot valve, magnetic rheological valve is applied to Hydraulic Power Transmission System that normal hydraulic oil is working medium, enhances the ability to work of hydraulic system, have also been enlarged the application area of magnetic rheological valve.
2. magnetorheological pilot valve adopts current signal to control, and achieves the automation of relief valve working pressure, intellectuality and real time implementation and controls;
3. magnetorheological pilot valve inside increases through flow hole, control by the magnetic rheological liquid viscous force producing magnetic rheology effect when pilot valve is opened, and when pilot valve resets, magnetic rheological liquid flows through through flow hole, be in outside the magnetic rheology effect zone of influence, therefore the mobility of magnetic rheological liquid does not reduce, and homing action response is rapid, sensitive.
4. screw press and the common regulable control pressure of electromagnetic coil, increase range of regulation.
Accompanying drawing explanation
Fig. 1 is the structural representation of relief valve during the present invention preferably implements.
Embodiment
Hereafter the present invention will be further described with embodiment by reference to the accompanying drawings.
With reference to figure 1, a kind of relief valve using magnetorheological pilot valve, working medium in relief valve is normal hydraulic oil, relief valve working pressure regulation range is 1-40MPa, peak rate of flow is 3000L/min, working medium in magnetorheological pilot valve is magnetic flow liquid, and magnetic flow liquid body bulk is at 30-150ml.
Described a kind of relief valve of magnetorheological pilot valve that uses comprises relief valve valve body 1, relief valve upper cover plate 5, valve core of main valve 2, main valve plug spring 3, magnetorheological pilot valve cone valve 6, magnetorheological pilot valve front shroud 7, magnetorheological pilot valve body 14, magnetorheological pilot valve piston 8, electromagnetic coil 9, pressure adjusting spring 12, pressure regulation block and screw press 13.
Relief valve upper cover plate 5, magnetorheological pilot valve front shroud 7, magnetorheological pilot valve body 14 are installed on relief valve valve seat 1.The valve rod of magnetorheological pilot valve cone valve 6, through relief valve upper cover plate 5, is fit in magnetorheological pilot valve body 14, and with magnetorheological pilot valve piston 8 compact siro spinning technology.Forming the working clearance 15 between magnetorheological pilot valve piston 8, magnetorheological pilot valve body 14, electromagnetic coil 9 makes magnetic rheological liquid flow, and the width of described working clearance 15 is 0.3-3mm, and length is 6-60mm.Magnetorheological pilot valve piston 8 is high permeability material with the iron core of magnetorheological pilot valve body 14 and electromagnetic coil 9.
Magnetorheological pilot valve piston 8 is a uniform 3-6 through flow hole 16 near central position, and through flow hole 16 centre distance magnetorheological pilot valve piston 8 outer round surface radial distance is greater than 5mm.Magnetorheological pilot valve piston 8 is provided with check valve sheet 10 and overcurrent plate 11 with the end face at magnetorheological pilot valve cone valve 6 opposite direction place, check valve sheet 10 is made up of elastic material, resiliently deformable can be produced in space between overcurrent plate 11 and piston 8 end face, close or open through flow hole 16.
There is pressure adjusting spring 12 magnetorheological pilot valve body 14 side and regulates briquetting and the screw arbor assembly 13 of pressure adjusting spring 12 pretightening force.Rotate the compression of pressure regulation block or release pressure adjusting spring 12 that screw press 13 can promote its front end.
During work, hydraulic oil enters relief valve valve seat 1 by relief valve filler opening, and enters the left chamber of magnetorheological pilot valve cone valve 6 in relief valve upper cover plate 5 via damping hole.When the pressure of hydraulic system is less than magnetic rheological liquid shear yield stress on the right side of pilot valve cone valve 6 and pressure adjusting spring 12 elastic force sum, pilot valve cone valve 6 can not be opened.When the magnetic rheological liquid shear yield stress on the right side of system liquid pressure is greater than pilot valve cone valve 6 and pressure adjusting spring 12 elastic force sum, pilot valve cone valve 6 drives magnetorheological pilot valve piston 8 jointly to move right, magnetic rheological liquid is flowed to ante-chamber by the working clearance 15 from magnetorheological pilot valve piston 8 back cavity simultaneously, and magnetorheological pilot valve cone valve 6 is opened.In valve core of main valve 2, hydraulic oil connects fuel tank from the passway after magnetorheological pilot valve cone valve 6, and now valve core of main valve about 2 two chamber mineralization pressure is poor.When the pressure difference on valve core of main valve 2 can balance the elastic force of main valve plug spring 4, valve core of main valve 2 upwardly opens, and relief valve outlet is opened, and hydraulic oil is flowed into from filler opening and flowed out by oil outlet.
During magnetorheological pilot valve cone valve 6 opening movement, the pressure of magnetic rheological liquid acts on the right flank of check valve sheet 10 by the hole on overcurrent plate 11, make its resiliently deformable and be adjacent to the right side of magnetorheological pilot valve piston, thus the through flow hole 16 closed on magnetorheological pilot valve piston 8, therefore magnetic rheological liquid can only be flowed by the working clearance 15, and the working clearance 15 is in the magnetic line of force area of influence of electromagnetic coil 9 generation, only have the hydraulic coupling of magnetorheological pilot valve cone valve 6 inlet can overcome magnetic flow liquid surrender before viscous force and pressure adjusting spring 12 elastic force time, magnetic flow liquid just can flow, magnetorheological pilot valve cone valve 6 can be opened.Electric current [strength in regulating winding, can change the shear yield stress of magnetic flow liquid, and namely it produces the power needed for flowing, also just can the cracking pressure of regulation relief valve.
Hydraulic system working pressure declines, during lower than relief valve cracking pressure, power on the left of magnetorheological pilot valve piston 8 is less than the power on right side, magnetorheological pilot valve piston 8 pushes away forward by pressure adjusting spring 12, the magnetic flow liquid pressure of magnetorheological pilot valve piston 8 ante-chamber acts on the left surface of check valve sheet 10 by through flow hole 16, check valve sheet 10 recovers the shape before resiliently deformable, opens through flow hole 16.And through flow hole 16 apart from electromagnetic coil 9 apart from comparatively large, affect faint by the magnetic line of force, therefore in through flow hole 16, magnetorheological liquid viscosity is low is easy to flowing, therefore can flow to rapidly magnetorheological pilot valve piston 8 back cavity, magnetorheological pilot valve cone valve 6 is resetted.
The control of the electric current [strength of electromagnetic coil 9 can realize real time implementation and intellectuality, but limited space in magnetorheological pilot valve, so the electromagnetic coil number of turn is too much unsuitable, the electric current [strength that can load is usually at 0-2.5A, and the magnetic flow liquid shearing stress produced can regulate within the scope of this.In order to increase relief valve pressure regulation spectrum, at pilot valve rear portion, briquetting and the adjusting screw rod 13 of adjustment pressure adjusting spring 12 pretightening force are installed additional, inwardly screw screw rod, make briquetting compress pressure adjusting spring 12 increase elastic force or outwards discharge the elastic force that screw rod reduces pressure adjusting spring 12, again in conjunction with the control of magnetic rheological liquid viscous resistance, just can to realize on a large scale, stepless, continuous print relief valve Stress control.
The above; be only the present invention's preferably embodiment, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. one kind uses the relief valve of magnetorheological pilot valve, comprise relief valve valve seat (1), relief valve upper cover plate (5), valve core of main valve (2), relief valve valve body (3), main valve plug spring (4), magnetorheological pilot valve cone valve (6), magnetorheological pilot valve cover plate (7), magnetorheological pilot valve body (14), magnetorheological pilot valve piston (8), electromagnetic coil (9), check valve sheet (10), overcurrent plate (11), pressure adjusting spring (12), pressure regulation block and screw press (13);
It is characterized in that: described relief valve upper cover plate (5), magnetorheological pilot valve front shroud (7), magnetorheological pilot valve body (14) are installed on relief valve valve seat (1); The valve rod of magnetorheological pilot valve cone valve (6), through relief valve upper cover plate (5), is fit in magnetorheological pilot valve body (14), and with magnetorheological pilot valve piston (8) compact siro spinning technology; Forming the working clearance (15) between magnetorheological pilot valve piston (8), magnetorheological pilot valve body (14), electromagnetic coil (9) makes magnetic rheological liquid flow; The iron core of magnetorheological pilot valve piston (8), magnetorheological pilot valve body (14) and electromagnetic coil (9) is high permeability material; Form space between the valve rod of overcurrent plate (11) and magnetorheological pilot valve cone valve (6), check valve sheet (10) can in this space resiliently deformable; Rotate the compression of pressure regulation block or release pressure adjusting spring (12) that screw press (13) can promote its front end.
2. a kind of relief valve using magnetorheological pilot valve according to claim 1, it is characterized in that: the working medium in described relief valve is normal hydraulic oil, the working medium in magnetorheological pilot valve is magnetic flow liquid, and magnetic flow liquid body bulk is at 30-150ml.
3. a kind of relief valve using magnetorheological pilot valve according to claim 1, is characterized in that: the width of described working clearance (15) is 0.3-3mm, and length is 6-60mm.
4. a kind of relief valve using magnetorheological pilot valve according to claim 1, it is characterized in that: described magnetorheological pilot valve piston (8) is near a central position uniform 3-6 through flow hole (16), and through flow hole centre distance magnetorheological pilot valve piston (8) outer round surface radial distance is greater than 5mm.
5. a kind of relief valve using magnetorheological pilot valve according to claim 4, is characterized in that: described magnetorheological pilot valve piston (8) installs described check valve sheet (10) and overcurrent plate (11) with the end face at magnetorheological pilot valve cone valve (6) opposite direction place; Described check valve sheet (10) is made up of elastic material, produces elastic strain in the space between overcurrent plate (11) and piston (8) end face, closes or opens through flow hole (16).
6. a kind of relief valve using magnetorheological pilot valve according to claim 1, is characterized in that: magnetorheological pilot valve body (14) side is installed described pressure adjusting spring (12) and regulated briquetting and the screw press (13) of pressure adjusting spring (12) pretightening force.
7. a kind of relief valve using magnetorheological pilot valve according to claim 1, is characterized in that: described relief valve working pressure regulation range is 1-40MPa, and peak rate of flow is 3000L/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071719.9A CN104633233B (en) | 2015-02-11 | 2015-02-11 | A kind of overflow valve using magnetorheological pilot valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510071719.9A CN104633233B (en) | 2015-02-11 | 2015-02-11 | A kind of overflow valve using magnetorheological pilot valve |
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| Publication Number | Publication Date |
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| CN104633233A true CN104633233A (en) | 2015-05-20 |
| CN104633233B CN104633233B (en) | 2017-10-20 |
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| CN201510071719.9A Expired - Fee Related CN104633233B (en) | 2015-02-11 | 2015-02-11 | A kind of overflow valve using magnetorheological pilot valve |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570521A (en) * | 2016-03-21 | 2016-05-11 | 北京工业大学 | Electromagnetic graphite valve |
| CN106168306A (en) * | 2016-08-11 | 2016-11-30 | 张广 | A kind of air relief valve based on magnetic rheology effect |
| CN106224606A (en) * | 2016-08-11 | 2016-12-14 | 张广 | A kind of guide type sequence 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 |
| CN106369200A (en) * | 2016-11-03 | 2017-02-01 | 华侨大学 | Gas spring overflow valve |
| CN107061416A (en) * | 2017-05-27 | 2017-08-18 | 安徽工程大学 | A kind of Bingham fluid is without valve element overflow mechanism and method |
| CN107654437A (en) * | 2017-11-23 | 2018-02-02 | 王雅莲 | A kind of adjustable overflow valve calibrated automatically |
| CN107687526A (en) * | 2017-11-23 | 2018-02-13 | 王雅莲 | A kind of overflow valve calibrated automatically |
| CN110905576A (en) * | 2019-12-12 | 2020-03-24 | 山东科技大学 | Hydraulic support magneto-rheological pilot operated safety valve based on magnetic control material and application thereof |
| CN110953386A (en) * | 2019-12-12 | 2020-04-03 | 山东科技大学 | Novel hydraulic support safety valve and application thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570521B (en) * | 2016-03-21 | 2018-03-16 | 北京工业大学 | Electromagnetism graphite valve |
| CN105570521A (en) * | 2016-03-21 | 2016-05-11 | 北京工业大学 | Electromagnetic graphite valve |
| CN106168306A (en) * | 2016-08-11 | 2016-11-30 | 张广 | A kind of air relief valve based on magnetic rheology effect |
| CN106224606A (en) * | 2016-08-11 | 2016-12-14 | 张广 | A kind of guide type sequence 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 |
| CN106369200A (en) * | 2016-11-03 | 2017-02-01 | 华侨大学 | Gas spring overflow valve |
| CN107061416A (en) * | 2017-05-27 | 2017-08-18 | 安徽工程大学 | A kind of Bingham fluid is without valve element overflow mechanism and method |
| CN107061416B (en) * | 2017-05-27 | 2018-04-27 | 安徽工程大学 | A kind of Bingham fluid is without spool overflow mechanism and method |
| CN107654437A (en) * | 2017-11-23 | 2018-02-02 | 王雅莲 | A kind of adjustable overflow valve calibrated automatically |
| CN107687526A (en) * | 2017-11-23 | 2018-02-13 | 王雅莲 | A kind of overflow valve calibrated automatically |
| WO2021031621A1 (en) * | 2019-12-12 | 2021-02-25 | 山东科技大学 | Magnetic control material-based, magnetorheological, pilot operated safety valve for hydraulic support, and use therefor |
| CN110953386A (en) * | 2019-12-12 | 2020-04-03 | 山东科技大学 | Novel hydraulic support safety valve and application thereof |
| CN110905576A (en) * | 2019-12-12 | 2020-03-24 | 山东科技大学 | Hydraulic support magneto-rheological pilot operated safety valve based on magnetic control material and application thereof |
| CN110953386B (en) * | 2019-12-12 | 2021-04-16 | 山东科技大学 | Novel hydraulic support safety valve and application thereof |
| JP2022512461A (en) * | 2019-12-12 | 2022-02-03 | 山東科技大学 | Magnetic rheology pilot operated safety valve for hydraulic support based on magnetron material and its applications |
| JP7018686B2 (en) | 2019-12-12 | 2022-02-14 | 山東科技大学 | Magnetic rheology pilot operated safety valve for hydraulic support based on magnetron material and its applications |
| US11480263B2 (en) | 2019-12-12 | 2022-10-25 | Shandong University Of Science And Technology | Magnetically controlled material-based magnetorheological pilot operated safety valve for hydraulic support, and applications of the same |
| GB2610056A (en) * | 2019-12-12 | 2023-02-22 | Univ Shandong Science & Tech | Magnetic control material-based, magnetorheological, pilot operated safety valve for hydraulic support, and use therefor |
| GB2610056B (en) * | 2019-12-12 | 2023-12-06 | Univ Shandong Science & Tech | Magnetic control material-based, magnetorheological, pilot operated safety valve for hydraulic support, and applications of the same |
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