CN102506219B - Permanent magnetic valve with characteristic of fast response - Google Patents
Permanent magnetic valve with characteristic of fast response Download PDFInfo
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- CN102506219B CN102506219B CN201110409657.XA CN201110409657A CN102506219B CN 102506219 B CN102506219 B CN 102506219B CN 201110409657 A CN201110409657 A CN 201110409657A CN 102506219 B CN102506219 B CN 102506219B
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Abstract
A permanent magnetic valve with a characteristic of fast response is used for executive components of fuel-feeding control and high-accuracy control systems of an automobile and a rocket engine. By means of a permanent magnet, the characteristics of a magnetic circuit are changed, inductivity of a magnetic valve coil is reduced, and the magnetic valve can produces the fast response to a signal, achieves quick starting and closing and improves a pulse characteristic of an engine and stability of the systems. The permanent magnetic valve comprises a connector, a filter device assembly, the permanent magnet, a casing, the coil, a valve body, an upper gasket, an armature assembly, a lower gasket and a valve seat. The filter device assembly comprises an upper press ring, a filter screen and a lower press ring. The armature assembly comprises an armature, an upper reed, a lower reed, an outer fastening ring, a blocking plate, a pin, an inner fastening ring and a magnetic inducting ring. The valve adopts the permanent magnet to adjust the characteristics of the magnetic circuit, enables current on the coil to be changed fast and enables switching speed of the magnetic valve to be improved remarkably. Resultant force consisting of permanent magnetic force produced by the permanent magnet and spring force can ensure reliable seal of the valve seat.
Description
Technical field
The present invention relates to a kind of permanent magnet electromagnetic valve with fast response characteristic, the management of the motor fuel medium that can have higher requirements for paired pulses response characteristic is controlled, and also can be used as the crucial executive component of high stable control system, hydraulic system.
Background technique
The switch electromagnetic valve of response is the crucial executive component of a lot of control system fast, and the switching speed of solenoid valve is directly connected to stability and the controllability of system.
In addition, the speed of response relation of the pulse characteristic of motor and solenoid valve is very close.For liquid propellant rocket engine, motor car engine etc., for pulse performance and the very high product of coherence request, the quick response that realizes solenoid valve is a very crucial technology.The speed of response of solenoid valve is faster, and the atomizing effect of nozzle is better, and the burning of engine chamber is more abundant, and combustion efficiency will be improved greatly, and the performance of product improves, and the tail gas of discharge reduces.
Response solenoid valve generally has following two kinds of structures fast:
(1) adopt a helix tube type solenoid valve for clapping type magnetic circuit, this valve mechanism is simple, volume is little, lightweight, but the high-speed electromagnetic valve of this structure relatively depends on high-speed driving circuit.When valve opening, driver circuit provides instant high-voltage, and valve is opened rapidly; When valve closing, driver circuit ends rapidly, and coil current is reduced to zero, and valve is closed rapidly.Because the stroke of this solenoid valve is little, flow is little and determined that for the dependence of high-speed driving circuit its using scope exists narrow limitation.
(2) on liquid propellant rocket engine, adopt torque motor valve as the control valve of motor abroad.This valve switch speed is fast, and power consumption is very little, but this valve also has many deficiencys.First, the manufacture difficulty of this valve is large, complex process, and cost is high, price; Secondly, this valve is very high for the requirement of cleanliness, is easier to be polluted and causes leaking.
Summary of the invention
Technology of the present invention is dealt with problems and is: overcome the deficiencies in the prior art, a kind of permanent magnet electromagnetic valve with fast response characteristic is provided, by permanent magnet, adjusts Magnetic circuit characters, reduce the perception of coil, solenoid valve can be responded fast to signal, improve switching speed.
The present invention's beneficial effect is compared with prior art:
(1) permanent magnet electromagnetic valve of the present invention is simple in structure, good manufacturability, it is convenient to realize, only need in the magnetic circuit of general solenoid valve, arrange uniform permanent magnet, just can change Magnetic circuit characters, the inductance of coil is declined 5～7 times, current increases and rate of descent on electromagnetic valve coil are all accelerated, reach rapidly firing current or close current, realize the object that improves valve response speed, it is 7ms left and right that general solenoid valve is opened speed of response, and the present invention has increased after permanent magnet, opens speed of response and can reach 2ms left and right.
(2) magnetic structure of permanent magnet electromagnetic valve of the present invention has not only improved the unlatching speed of response of solenoid valve, also makes shut-in time speed of response significantly improve.Opening speed of response can change because of the variation of driving voltage, opens driving voltage larger, and opening speed is faster, but under different driving voltages, the speed of response of closing of solenoid valve changes little, highly stable.
(3) permanent magnet electromagnetic valve of the present invention, under the driving of general driver circuit, has improved 3～5 times than the general solenoid valve speed of response under equal flow, if be equipped with high-speed driving circuit, the speed of response of solenoid valve can also be further improved.
(4) the present invention has adopted inhalation type solenoid valve armature suspension structure, has further reduced the surface friction drag of solenoid valve, makes the speed of response of solenoid valve rapider, and operating life is more reliable.
Accompanying drawing explanation
Fig. 1 is permanent magnet electromagnetic valve structural representation;
Fig. 2 is valve body structure schematic diagram;
Fig. 3 is armature component structural representation;
Fig. 4 is reed structure schematic diagram
Fig. 5 is a watt shape permanent magnet schematic diagram;
Fig. 6 filter assemblies structural representation;
Fig. 7 is magnetic circuit schematic diagram;
Fig. 8 is the response current curve comparison figure of general solenoid valve and permanent magnet electromagnetic valve.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described in detail.
As shown in Figure 1, the invention provides a kind of permanent-magnett electromagnetic valve arrangement with fast response characteristic, comprise joint 1, filter assemblies 2, permanent magnet 3, shell 4, coil 5, valve body 6, Upper gasket 7, armature component 8, lower levelling plate 9 and valve seat 10; Filter assemblies comprises upper press ring 21, filter screen 22 and lower pressure ring 23; Armature component comprises armature 81, upper reed plate 82, lower reed 83, outer retaining ring 84, baffle plate 85, pin 86, interior retaining ring 87 and magnetic guiding loop 88;
Valve body (6) as shown in Figure 2, comprise the different hollow circular cylinder of the diameter with step made from two sections of magnetically soft alloy materials every magnetic annulus that one section of NULL is made, every magnetic annulus, be enclosed within one end of the soft magnetism hollow circular cylinder that diameter is less, the cover of the soft magnetism hollow circular cylinder that this diameter is less simultaneously has the one end every magnetic annulus, be placed in inner chamber Zhong one end of the soft magnetism hollow circular cylinder that diameter is larger, every magnetic annulus, be all welded and fixed and be connected with two sections of soft magnetism hollow circular cylinders, form valve body (6), coil 5 is wrapped in the unit with grooves in outer wall of valve body 6, lighting outlet adopts fishing line mode.
Some watts of shape permanent magnets 3 as shown in Figure 5, are installed on the outer wall of the less side of valve body 6 external diameters uniformly, and it is full that the space between permanent magnet 3 can be used soft magnetic material to fill, and the electromagnetism polar orientation that the polar orientation of permanent magnet and coil 5 produce is consistent.
Valve seat 10 is the hollow circular cylinder with step, one end is valve port, there is valve port one end to pack into successively in the cavity of the larger side of valve body 6 external diameters Upper gasket 7, armature component 8, lower levelling plate 9 and valve seat 10, wherein Upper gasket 7 is controlled the stroke of armature component 8, lower levelling plate 9 is controlled the decrement of upper reed plate 82 and lower reed 83, the one side of Upper gasket 7 is adjacent to valve body 6, and another side is compressed by armature component 8; The one side of lower levelling plate 9 is adjacent to armature component 8, and another side is compressed by valve seat 10, together with valve seat 10 is welded and fixed with valve body 1.
As shown in Figure 3, the solid cylinder with the level that armature 81 is made for magnetically soft alloy, baffle plate 85 is solid cylinder, coaxial dovetail groove is dug in one end, in dovetail groove, be filled with nonmetal sealing material, fixing by using pin 86 to rivet between armature 81 and baffle plate 85, upper reed plate 82, interior retaining ring 87, lower reed 83 and outer retaining ring 84 pack into from baffle plate 85 1 sides, be enclosed within successively on the mandrel of armature 81, wherein, upper reed plate 82 is clamped by armature 81 and interior retaining ring 87, lower reed 83 is clamped by interior retaining ring 87 and outer retaining ring 84, magnetic guiding loop 88 is clipped between upper reed plate 82 and lower reed 83, between outer retaining ring 84 and armature 81, using laser bonding to carry out 4 spot welding fixes.
As shown in Figure 4, upper reed plate 42 and lower reed 43 are three arm reed structures, have good stability and radial rigidity.Upper reed plate 82 and lower reed 83 are all positioned at the homonymy of coil 5, and upper reed plate 82 and lower reed 83 suspend armature 81 get up, and armature 81 can be moved back and forth.
Filter assemblies 2 as shown in Figure 6, by upper press ring 21 and lower pressure ring 23, filter screen 22 is compressed and is welded to form, joint 1 is the hollow circular cylinder with step, be assemblied in the center hole of joint 1 without the conical surface one side, joint 1, filter assemblies 2 are connected with the center hole of external diameter compare little one end of valve body 6, the hollow cylinder of shell 4 outer soft magnetic materials, be enclosed within valve body 6 outsides, use screw fastening, on shell 4 cylinder walls, there is waist shaped hole, the lead-in wire of coil 5 is drawn from hole, from waist shaped hole injection ring epoxy resins, by coil 5 sealings.
As shown in Figure 7, one section of air gap between permanent magnet 3, valve body 6, armature 81, magnetic guiding loop 88, armature 81 and valve body 6, shell 4 form a complete closed loop magnetic circuit.
When electromagnetic valve coil 5 is not switched on, permanent magnet 3 produces suction in magnetic circuit, act on armature 81, produce one with sealing opposite direction power, after the spring force that upper reed plate 82 in armature component 8,83 distortion of lower reed produce need to overcome suction, still there is the sealing of enough try hard to keep card baffle plate 85 and valve seat 10.If permanent magnetic attraction magnetic force after magnetic pulse and temperature alternating fails to some extent, sealing force will be larger, seal more reliable.
As shown in Figure 8, the effect of permanent magnet 3 declines the inductance value of electromagnetic valve coil 5 greatly, therefore when coil 5 energising, the Current rise speed of permanent magnet electromagnetic valve is far above general solenoid valve, electromagnetic force can be improved faster, when electromagnetic force can overcome spring force, armature 81 starts to drive baffle plate 85 to joint 1 direction motion, valve starts to open, now because making electric current, armature 81 motion cutting magnetic lines decline, after armature 81 motions, valve is opened completely, and electric current continues to rise to steady-state value.
When coil 5 power-off, it is rapider that the electric current that the effect of permanent magnet 3 makes permanent magnet electromagnetic valve declines compared with general solenoid valve, make the faster of electromagnetic force decay, when electromagnetic force is less than spring force, armature 81 resets under spring-force driven dual, and valve starts to close, now because armature 81 motion cutting magnetic lines make Current rise, after armature 81 motions, valve is closed completely, and electric current continues to drop to zero.
By the flex point of rising edge, trailing edge in current curve can determine solenoid valve unlatching, close speed of response, as can be seen from Figure 8, due to the effect of permanent magnet 3 make permanent magnet electromagnetic valve unlatching, close speed of response far above general solenoid valve.
The content not being described in detail in specification of the present invention belongs to professional and technical personnel in the field's known technology.
Claims (4)
1. a permanent magnet electromagnetic valve with fast response characteristic, is characterized in that: comprise joint (1), filter assemblies (2), permanent magnet (3), shell (4), coil (5), valve body (6), Upper gasket (7), armature component (8), lower levelling plate (9) and valve seat (10);
The hollow circular cylinder with step that valve body (6) is made for soft magnetic material, coil (5) is wrapped in the outer wall stepped recesses of valve body (6), the lighting outlet of coil (5) adopts fishing line mode, permanent magnet (3) is a watt shape, and a plurality of permanent magnets (3) are assemblied on the outer wall of valve body (6) external diameter compare little one end uniformly;
Armature component (8) comprises armature (81), upper reed plate (82), lower reed (83), outer retaining ring (84), baffle plate (85), pin (86), interior retaining ring (87) and magnetic guiding loop (88);
Armature (81) is sidewall solid cylinder with the level, and there is a cylinder shape groove end face center vertically, baffle plate (85) for cross section be the solid cylinder of T shape, the large end surfaces of diameter of baffle plate (85) digs coaxial dovetail groove, in dovetail groove, be filled with nonmetal sealing material, the end face center that diameter little one end of baffle plate (85) is inserted into armature (81) has in a cylinder shape groove, fit tightly, and use pin (86) riveted joint fixing;
Upper reed plate (82), magnetic guiding loop (88), interior retaining ring (87), lower reed (83) and outer retaining ring (84) pack into from baffle plate (85) one sides, be enclosed within successively on the sidewall step of armature (81), wherein, upper reed plate (82) is clamped by armature (81) and interior retaining ring (87), lower reed (83) is clamped by interior retaining ring (87) and outer retaining ring (84), magnetic guiding loop (88) is clipped between upper reed plate (82) and lower reed (83), between outer retaining ring (84) and armature (81), is welded and fixed;
Valve seat (10) is the hollow circular cylinder with step, and one end is valve port; There is one end of valve port to pack into successively in the cavity of the larger side of valve body (6) external diameter Upper gasket (7), armature component (8), lower levelling plate (9) and valve seat (10), wherein the one side of Upper gasket (7) is adjacent to valve body (6), and another side is adjacent to the upper reed plate (82) of armature component (8); The one side of lower levelling plate (9) is adjacent to the lower reed (83) of armature component (8), and another side is adjacent to valve seat (10); Lower levelling plate (9) is for adjusting the amount of deformation of upper reed plate (82) and lower reed (83), and Upper gasket (7) is for adjusting the actuating length of armature (81), and valve seat (10) is welded and fixed with valve body (6);
Joint (1) is the hollow circular cylinder with step, and one end is the conical surface, and one end is disc, and filter assemblies (2) comprises upper press ring (21), filter screen (22) and lower pressure ring (23); Upper press ring (21) and lower pressure ring (23) are clipped in the middle filter screen (22), compress and are welded as a whole, and filter assemblies (2) is assemblied in the center hole of joint (1) disc one side; Joint (1), filter assemblies (2) are connected with the center hole of external diameter compare little one end of valve body (6);
The hollow cylinder that shell (4) is soft magnetic material, is enclosed within valve body (6) outside, uses screw fastening, on shell (4) cylinder wall, there is waist shaped hole, the lead-in wire of coil (5) is drawn from hole, from waist shaped hole injection ring epoxy resins, by coil (5) sealing;
One section of air gap between permanent magnet (3), valve body (6), armature (81), magnetic guiding loop (88), shell (4) and armature (81) and valve body (6) forms a complete closed loop magnetic circuit, and permanent magnet (3) plays the effect of accelerating driving;
Described upper reed plate (82) and lower reed (83) act on spring force sum on armature (81) and are greater than permanent magnet (3) and act on the suction-combining force on armature (81), and the sealing force that spring force sum is deducted produce after the suction-combining force can guarantee the reliable sealing between baffle plate (85) and valve seat (10).
2. a kind of permanent magnet electromagnetic valve with fast response characteristic according to claim 1, it is characterized in that: valve body (6) comprises the different hollow circular cylinder of the diameter with step made from two sections of magnetically soft alloy materials every magnetic annulus that one section of NULL is made, every magnetic annulus, be enclosed within one end of the soft magnetism hollow circular cylinder that diameter is less, the cover of the soft magnetism hollow circular cylinder that this diameter is less simultaneously has the one end every magnetic annulus, be placed in inner chamber Zhong one end of the soft magnetism hollow circular cylinder that diameter is larger, every magnetic annulus, be all welded and fixed and be connected with two sections of soft magnetism hollow circular cylinders, form valve body (6).
3. a kind of permanent magnet electromagnetic valve with fast response characteristic according to claim 1, is characterized in that: armature (81), magnetic guiding loop (88) are made for magnetically soft alloy.
4. a kind of permanent magnet electromagnetic valve with fast response characteristic according to claim 1, is characterized in that: between outer retaining ring (84) and armature (81), use laser bonding to carry out 4 spot welding and fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201110409657.XA CN102506219B (en) | 2011-12-08 | 2011-12-08 | Permanent magnetic valve with characteristic of fast response |
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|---|---|---|---|
| CN201110409657.XA CN102506219B (en) | 2011-12-08 | 2011-12-08 | Permanent magnetic valve with characteristic of fast response |
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| CN102506219A CN102506219A (en) | 2012-06-20 |
| CN102506219B true CN102506219B (en) | 2014-01-15 |
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| CN201110409657.XA Active CN102506219B (en) | 2011-12-08 | 2011-12-08 | Permanent magnetic valve with characteristic of fast response |
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