CN104948523A - Hydraulic speed regulating valve with pressure and temperature electric feedback compensation functions and digital display device - Google Patents
Hydraulic speed regulating valve with pressure and temperature electric feedback compensation functions and digital display device Download PDFInfo
- Publication number
- CN104948523A CN104948523A CN201510225538.7A CN201510225538A CN104948523A CN 104948523 A CN104948523 A CN 104948523A CN 201510225538 A CN201510225538 A CN 201510225538A CN 104948523 A CN104948523 A CN 104948523A
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- China
- Prior art keywords
- valve
- rod
- giant magnetostrictive
- pressure
- display device
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Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Temperature-Responsive Valves (AREA)
- Control Of Fluid Pressure (AREA)
Abstract
The invention discloses a hydraulic speed regulating valve with pressure and temperature electric feedback compensation functions and a digital display device. The hydraulic speed regulating valve comprises a nut, a positive giant magnetostrictive actuator, magnetic exciting coils, a positive giant magnetostrictive rod, a negative giant magnetostrictive rod, valve stems, a valve spool, displacement sensors, a temperature sensor, a pressure sensor, a controller, a screw and a valve body. The upper end and the lower end of the valve spool are hermetically butted onto an oil inlet and an oil outlet, the valve stems are arranged on the left side and the right side of the valve spool, the left valve stem is connected with the side walls of the valve spool, the right valve stem is connected with the left end of the negative giant magnetostrictive rod, the screw is spirally arranged in the nut, the right end of the screw is butted to the positive giant magnetostrictive actuator, the positive giant magnetostrictive rod is arranged in the positive giant magnetostrictive actuator and is connected with the left valve stem, the magnetic exciting coils are respectively arranged on the positive giant magnetostrictive rod and the negative giant magnetostrictive rod, the displacement sensors are arranged on the valve stems, and the displacement sensors, the temperature sensor and the pressure sensor are respectively correspondingly connected with the controller. The hydraulic speed regulating valve has the advantages of constant output flow, fast compensation response and convenience in precisely controlling flow regulation.
Description
technical field:
The present invention relates to a kind of Hydraulic Adjustable Speed valve with pressure and temperature electricity feedback compensation and digital display device.
background technique:
Series flow control valve is a kind of flow control valve, for regulating the speed of hydraulic actuator.Not to be stressed impact and keep constant in order to ensure output flow, series flow control valve adopts throttle valve and the series connection of setting difference type reduction valve usually, composition decompression throttling type series flow control valve, or throttle valve is in parallel with differential pressure type relief valve, composition overflow throttling type series flow control valve, by pressure compensation, makes output flow stablize.Do not keep constant by the impact of temperature in order to ensure output flow, usually adopt and there is larger expansion coefficient material, as polyvinyl plastics NASC makes valve rod, carry out temperature correction.Above-mentioned pressure and temperature compensates low-response, and precision is low, cannot guarantee the high request to discharge stability.
Therefore, necessaryly improve to solve that it is not enough to prior art.
summary of the invention:
The present invention provides a kind of Hydraulic Adjustable Speed valve with pressure and temperature electricity feedback compensation and digital display device to solve described prior art Problems existing.
The technical solution used in the present invention has:
There is a Hydraulic Adjustable Speed valve for pressure and temperature electricity feedback compensation and digital display device, comprise nut, positive super-magnetostrictive drive, field coil, positive giant magnetostrictive rod, valve rod, spool, negative giant magnetostrictive rod, displacement transducer, temperature transducer, pressure transducer, display device, controller, screw rod and be provided with filler opening and oil outlet valve body, described spool is slidably arranged in valve body, and the sealing of the two ends up and down of spool is connected on filler opening and oil outlet, valve rod is arranged on the spool left and right sides, and the valve rod in left side is connected with spool sidewall, the valve rod on right side is connected with the left end of negative giant magnetostrictive rod, the right-hand member of negative giant magnetostrictive rod is connected with valve body, described nut is arranged on valve body, screw spiral is arranged in nut, and right-hand member stretches into, and valve body is interior to be connected with positive super-magnetostrictive drive, positive giant magnetostrictive rod is arranged in positive super-magnetostrictive drive, and right-hand member is connected with the valve rod in left side, and field coil is set on positive giant magnetostrictive rod and negative giant magnetostrictive rod respectively, institute's displacement sensors is arranged on valve rod, temperature transducer, pressure transducer, display device and controller are arranged on valve body, displacement transducer, temperature transducer, display device and pressure transducer are corresponding with the control end of controller to be respectively connected.
Further design of the present invention is:
Be provided with valve pocket in described valve body, the upper and lower two ends of described valve pocket are provided with the restriction connected with filler opening on valve body and oil outlet respectively, and described spool is arranged in valve pocket, and the upper and lower two ends of spool are connected on the restriction at two ends up and down of valve pocket.
Be provided with preloaded spring in described valve pocket, the left end of preloaded spring is fixedly connected with spool, and right-hand member is connected on valve sleeving inner wall.
The valve rod of left end is arranged with Returnning spring, and the left end of described Returnning spring is connected on positive super-magnetostrictive drive, and right-hand member is connected on valve body.
The two ends, left and right of described valve body are respectively equipped with left end cap and right end cap, and described nut is arranged on left end cap, and the right-hand member of negative giant magnetostrictive rod is connected with right end cap.
Described screw rod left end is provided with handwheel.
Described temperature transducer and pressure transducer are arranged on oil outlet position on valve body.
The present invention has following beneficial effect:
The present invention utilizes the Magnetostrictive effect of super magnetostriction material, according to pressure, temperature variation, by compensator control valve restriction displacement
x, make the output flow of valve constant, compensate response fast, be convenient to accurate flow control and regulate.
accompanying drawing illustrates:
Fig. 1 is structural drawing of the present invention.
Fig. 2 is the sectional structure chart of filler opening and oil outlet position on valve body in the present invention.
Wherein
1, handwheel; 2, nut; 3, left end cap; 4, valve body; 5, positive super-magnetostrictive drive; 6, field coil; 7, positive giant magnetostrictive rod; 8, Returnning spring; 9, valve rod; 10, valve pocket end cap; 11, spool; 12, valve pocket; 13, preloaded spring; 15, right clapboard; 16, display device; 17, right end cap; 18, negative giant magnetostrictive rod; 20, displacement transducer; 21, temperature transducer; 22, pressure transducer; 24, left clapboard; 25, screw rod.
embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Please refer to Fig. 1 and Fig. 2, a kind of Hydraulic Adjustable Speed valve with pressure and temperature electricity feedback compensation and digital display device of the present invention, comprise the columniform valve body 4 with inner chamber, left end cap 3 and right end cap 17 is connected with in the left and right of valve body 4, in valve body 4, be provided with left clapboard 24 and right clapboard 15, the inner chamber of valve body 4 is divided into the little inner chamber in three, left center right by left and right dividing plate.
The middle part inner chamber of valve body 4 is provided with filler opening and oil outlet, spool 11, valve pocket 12, valve pocket end cap 10 and preloaded spring 13 is provided with in the inner chamber of middle part, valve pocket end cap 10 is arranged on valve pocket 12, valve pocket about 12 two ends are provided with the restriction connected with filler opening on valve body 4 and oil outlet respectively, spool 11 is slidably arranged in valve pocket 12, and the two ends up and down of spool 11 are connected on the restriction at two ends up and down of valve pocket 12 respectively, the left end of preloaded spring 13 is fixedly connected with spool 11, and right-hand member is connected on valve pocket 12 inwall.
In the left end inner chamber of valve body 4, be provided with positive super-magnetostrictive drive 5, field coil 6, positive giant magnetostrictive rod 7 and field coil 6 and positive giant magnetostrictive rod 7 is arranged in positive super-magnetostrictive drive 5, field coil 6 is set on positive giant magnetostrictive rod 7.The right-hand member of positive giant magnetostrictive rod 7 is fixedly connected with by the left end of valve rod 9 with the spool 11 in the inner chamber of middle part.This side valve bar 9 is arranged with Returnning spring 8, and the left end of this Returnning spring 8 is connected on positive super-magnetostrictive drive 5, and right-hand member is connected on left clapboard 24.Positive giant magnetostrictive rod 7 in the present invention is domestic rare earth alloy T
bd
yf
ebar, its maximum elongation value can reach tens microns.
Negative giant magnetostrictive rod 18 and field coil 6 is provided with in the right-hand member inner chamber of valve body 4, field coil 6 is set on negative giant magnetostrictive rod 18, the right-hand member of negative giant magnetostrictive rod 18 is connected on right end cap 17, and left end is connected with valve pocket 12 right-hand member in the inner chamber of middle part by valve rod 9.Negative giant magnetostrictive rod 18 in the present invention adopts domestic Sm
0.88nd
0.12fe
1.93alloy, its saturation magnetostriction constant can reach-2220 × 10
-6.
The left end cap 3 of valve body 4 is provided with nut 2, and screw rod 25 spiral is arranged in nut 2, and right-hand member stretches in valve body 4 left end inner chamber and positive super-magnetostrictive drive 5 offsets.The present invention, for convenience of rotary screw 25, is fixedly connected with handwheel 1 at the left end of screw rod 25.
Valve body 4 is provided with display device 16 and controller, temperature transducer 21 and pressure transducer 22 is provided with in the oil outlet position of valve body 4, the valve rod 9 of left end and right-hand member is provided with displacement transducer 20, and displacement transducer 20, temperature transducer 21, pressure transducer 22 and display device 16 are corresponding with the input/output terminal on controller to be respectively connected.The present invention, for measuring the sensor 20 of spool 11 and valve pocket 12 axial displacement for inductance type, is the differential transformer that is iron core with valve rod 9.
Positive super-magnetostrictive drive 5 in the present invention is (by rotation hand wheel 1) under the promotion of left end screw rod 25, overcomes the active force of Returnning spring 8, moves right together with the valve rod 9 of left end and spool 11, makes restriction on valve pocket 12 produce axial displacement
x.On the right side of right clapboard 15, the negative giant magnetostrictive rod 18 be connected with right-hand member valve rod 14, when passing into temperature compensation signal in the field coil 6 on it, will produce axial shrinkage, drive the relative valve body 4 of valve pocket 12 and spool 11 to move to right, make the axial displacement of restriction
xreduce.
Because the right-hand member of negative giant magnetostrictive rod 18 is connected with the right end cap 17 of valve body 4, so when not temperature compensated signal input, valve pocket 12 is axially fixing, only has rotation hand wheel 1, promote spool 11 opposing valve sleeves 12 by screw rod 25 to move, open or close throttle orifice.Throttle orifice in the present invention on valve pocket 12 is annular deep gouge
x, on the position that valve interior surface is corresponding, also process annular deep gouge
y.Valve body 4 and valve pocket 12 also process radial oil-feed short-bore
a,
bwith
c,
d.By the oil outlet of valve body 4, processing axial port
f, and axial port
fwith oil-feed short-bore
cbe communicated with.
When series flow control valve of the present invention is started working, according to the rate request of executive component, rotation hand wheel 1 drives screw rod 25 to rotate, screw rod 25 is promoted, and the relative valve body 4 of predetermined spring force that positive super-magnetostrictive drive 5 overcomes Returnning spring 8 moves right, promote spool 11 opposing valve sleeves 12 to move to right, make the displacement of restriction axially open be
x.Now
xnumerical value measured by displacement transducer 20 and be converted to electricity and be stored in controller.
Theoretical according to hydraulic transmission, now, by the fluid flow of restriction be:
（1）
In formula
q---the output flow of flow control valve;
k l---restriction coefficient, the coefficient relevant with the viscosity, flowing state etc. of port shape, fluid;
Δ
p---the pressure difference before and after valve port;
x---spool axial displacement;
d---the diameter of spool.
So, when
k l, Δ
pone timing, to fixed valve plug 11 axial displacement
x, flow
qdetermine.
When according to system speed requirement, output flow set up by series flow control valve of the present invention, i.e. spool 11 displacement
xafter value is set up, pressure transducer 22 and temperature transducer 21 also record and now transfer to controller by the pressure and temperature after valve restriction, and via controller calculates corresponding output flow by (1) formula and shown by digital display device.
But in actual applications, due to load and temperature variation, make in (1) formula
k land Δ
pchange, so the output flow of series flow control valve
qeven if in spool 11 displacement
xalso will change when having set up, and cause the movement velocity of executive component unstable.Therefore need to carry out pressure and flow-compensated.
The present invention processes the change of series flow control valve outlet pressure and temperature in real time by controller, controls elongation and the shortening of positive and negative super magnetostriction material, changes the axial displacement of spool 11 and valve pocket 12, the displacement of revised restriction
xvalue, makes the output flow of valve
qremain unchanged.Thus compensate because pressure or temperature variation are on the impact of valve output flow.
The load driven when hydraulic actuator increases, and series flow control valve outlet pressure is also increased, the pressure differential deltap before and after restriction
preduce (pressure before restriction is constant), according to (1) formula, when other conditions are all constant, the output flow of valve
qto reduce.Now, pressure transducer 22 detects Δ
pdecrease, controller calculates flow according to this
q, warp is with initial
qexport corresponding compensating signal after comparing, the amplification circuit in this signal via controller amplifies, and makes the field coil 6 be wrapped on positive giant magnetostrictive rod 5 obtain electric and produce magnetic field.Due to Magnetostrictive effect, positive giant magnetostrictive rod 5 will extend, and by the valve rod 9 of right-hand member, spool 11 be moved to right, and restriction axially open amount increases Δ
x, the output flow of valve just increases, and compensate for due to Δ
pthe flow reducing to cause reduces.The product of the MCS-51 series of extensive use selected by the single-chip microcomputer comprised in controller.
On the contrary, the load driven when hydraulic actuator reduces, and series flow control valve outlet pressure is also reduced, the output flow of valve
qby because restriction before and after pressure differential deltap
pincrease and increase.Now, controller obtains electric by making the field coil 19 be wrapped on negative giant magnetostrictive rod 18 and produces magnetic field.According to Magnetostrictive effect, the negative giant magnetostrictive rod 18 with negative magnetostriction coefficient will produce axial shrinkage, and the valve rod 9 and valve pocket 12 that pull right-hand member move to right by this distortion, make restriction axially open amount reduce Δ
x, the output flow of valve just reduces, and compensate for due to Δ
psubtract the flow caused greatly to increase.
In like manner, the change of temperature is detected by temperature transducer 21, and variable quantity is transferred to controller and produce corresponding compensating signal, and plus or minus giant magnetostrictive rod is elongated or shortened, and produces the compensate for displacement Δ of restriction
x, make flow
qconstant.
When pressure and temperature changes simultaneously, by displacement transducer 20, the plus or minus giant magnetostrictive rod amount of elongating or shortening (displacement of corresponding spool 11 and valve pocket 12) is added and subtracted in the controller, produce accurately corresponding compensate for displacement Δ
x, the final output flow of series flow control valve that keeps is stablized constant.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.
Claims (7)
1. one kind has the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device, it is characterized in that: comprise nut (2), positive super-magnetostrictive drive (5), field coil (6), positive giant magnetostrictive rod (7), valve rod (9), spool (11), negative giant magnetostrictive rod (18), displacement transducer (20), temperature transducer (21), pressure transducer (22), display device (16), controller, screw rod (25) and be provided with the valve body (4) of filler opening and oil outlet, described spool (11) is slidably arranged in valve body (4), and the sealing of the two ends up and down of spool (11) is connected on filler opening and oil outlet, valve rod (9) is arranged on spool (11) left and right sides, and the valve rod in left side (9) is connected with spool (11) sidewall, the valve rod (9) on right side is connected with the left end of negative giant magnetostrictive rod (18), the right-hand member of negative giant magnetostrictive rod (18) is connected with valve body (4), described nut (2) is arranged on valve body (4), screw rod (25) spiral is arranged in nut (2), and right-hand member stretches into, and valve body (4) is interior to be connected with positive super-magnetostrictive drive (5), positive giant magnetostrictive rod (7) is arranged in positive super-magnetostrictive drive (5), and right-hand member is connected with the valve rod (9) in left side, field coil (6) is set on positive giant magnetostrictive rod (7) and negative giant magnetostrictive rod (18) respectively, institute's displacement sensors (20) is arranged on valve rod (9), temperature transducer (21), pressure transducer (22), display device (16) and controller are arranged on valve body (4), displacement transducer (20), temperature transducer (21), pressure transducer (22) is connected with display device (16) is corresponding with the control end of controller respectively.
2. there is the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device as claimed in claim 1, it is characterized in that: in described valve body (4), be provided with valve pocket (12), described valve pocket (12) up and down two ends is provided with the restriction that upper filler opening and oil outlet connect with valve body (4) respectively, described spool (11) is arranged in valve pocket (12), and spool (11) is connected on the restriction at the two ends up and down of valve pocket (12) at two ends up and down.
3. there is the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device as claimed in claim 2, it is characterized in that: in described valve pocket (12), be provided with preloaded spring (13), the left end of preloaded spring (13) is fixedly connected with spool (11), and right-hand member is connected on valve pocket (12) inwall.
4. there is the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device as claimed in claim 1, it is characterized in that: the valve rod (9) of left end is arranged with Returnning spring (8), the left end of described Returnning spring (8) is connected on positive super-magnetostrictive drive (5), and right-hand member is connected on valve body (4).
5. there is the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device as claimed in claim 1, it is characterized in that: the two ends, left and right of described valve body (4) are respectively equipped with left end cap (3) and right end cap (17), described nut (2) is arranged on left end cap (3), and the right-hand member of negative giant magnetostrictive rod (18) is connected with right end cap (17).
6. there is the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device as claimed in claim 1, it is characterized in that: described screw rod (25) left end is provided with handwheel (1).
7. there is the Hydraulic Adjustable Speed valve of pressure and temperature electricity feedback compensation and digital display device as claimed in claim 1, it is characterized in that: described temperature transducer (21) and pressure transducer (22) are arranged on the upper oil outlet position of valve body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510225538.7A CN104948523B (en) | 2015-05-06 | 2015-05-06 | Hydraulic speed regulating valve with pressure and temperature electric feedback compensation functions and digital display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510225538.7A CN104948523B (en) | 2015-05-06 | 2015-05-06 | Hydraulic speed regulating valve with pressure and temperature electric feedback compensation functions and digital display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104948523A true CN104948523A (en) | 2015-09-30 |
| CN104948523B CN104948523B (en) | 2017-04-19 |
Family
ID=54163463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510225538.7A Active CN104948523B (en) | 2015-05-06 | 2015-05-06 | Hydraulic speed regulating valve with pressure and temperature electric feedback compensation functions and digital display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104948523B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020687A (en) * | 1974-06-26 | 1977-05-03 | Peter Fischer | Electrodynamic force measuring apparatus |
| JP2002286036A (en) * | 2001-03-27 | 2002-10-03 | Ebara Corp | Magnetic bearing apparatus |
| CN101576101A (en) * | 2009-05-27 | 2009-11-11 | 南京航空航天大学 | Super magnetostrictive actuator driving single-stage direct-acting jet pipe servo valve |
| CN201696398U (en) * | 2010-02-01 | 2011-01-05 | 陕西多伦科技发展有限公司 | Water medium throttle valve speed regulation device |
| CN102213243A (en) * | 2011-06-01 | 2011-10-12 | 武汉科技大学 | Composite high-efficiency high-flow servo valve |
| CN202048040U (en) * | 2011-04-29 | 2011-11-23 | 佛山市顺德区震德塑料机械有限公司 | Novel hydraulic safety valve |
| CN103438243A (en) * | 2013-09-24 | 2013-12-11 | 淮海工学院 | Incremental electro-hydraulic digital flow control valve with double valve cores rotating oppositely |
| CN203655754U (en) * | 2013-12-04 | 2014-06-18 | 北京建筑大学 | Digital modulation type hydraulic fast switching valve |
| CN104179750A (en) * | 2014-08-19 | 2014-12-03 | 淮海工学院 | Digital-analog hybrid directional control valve |
-
2015
- 2015-05-06 CN CN201510225538.7A patent/CN104948523B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4020687A (en) * | 1974-06-26 | 1977-05-03 | Peter Fischer | Electrodynamic force measuring apparatus |
| JP2002286036A (en) * | 2001-03-27 | 2002-10-03 | Ebara Corp | Magnetic bearing apparatus |
| CN101576101A (en) * | 2009-05-27 | 2009-11-11 | 南京航空航天大学 | Super magnetostrictive actuator driving single-stage direct-acting jet pipe servo valve |
| CN201696398U (en) * | 2010-02-01 | 2011-01-05 | 陕西多伦科技发展有限公司 | Water medium throttle valve speed regulation device |
| CN202048040U (en) * | 2011-04-29 | 2011-11-23 | 佛山市顺德区震德塑料机械有限公司 | Novel hydraulic safety valve |
| CN102213243A (en) * | 2011-06-01 | 2011-10-12 | 武汉科技大学 | Composite high-efficiency high-flow servo valve |
| CN103438243A (en) * | 2013-09-24 | 2013-12-11 | 淮海工学院 | Incremental electro-hydraulic digital flow control valve with double valve cores rotating oppositely |
| CN203655754U (en) * | 2013-12-04 | 2014-06-18 | 北京建筑大学 | Digital modulation type hydraulic fast switching valve |
| CN104179750A (en) * | 2014-08-19 | 2014-12-03 | 淮海工学院 | Digital-analog hybrid directional control valve |
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| Publication number | Publication date |
|---|---|
| CN104948523B (en) | 2017-04-19 |
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