CN206626250U - A kind of normally opened solenoid electric valve - Google Patents
A kind of normally opened solenoid electric valve Download PDFInfo
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- CN206626250U CN206626250U CN201720228554.6U CN201720228554U CN206626250U CN 206626250 U CN206626250 U CN 206626250U CN 201720228554 U CN201720228554 U CN 201720228554U CN 206626250 U CN206626250 U CN 206626250U
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- valve
- pressure
- secondary piston
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Abstract
The utility model discloses a kind of normally opened solenoid electric valve, to disconnect and connect the double acting piston of both sides in Stirling engine, causes the pressure differential collapses acted on piston, so that engine stop destroys oneself.The system is made up of the part such as sleeve pipe, main piston and secondary piston and magnet coil, and main piston, secondary piston, magnet coil etc. are installed on sleeve pipe.The system realizes good gas circuit pipeline effect, durability, miniaturization, cost-effective, replaceability function using simple, simple installation.
Description
Technical field
The utility model patent is a kind of bidirectional high-pressure magnetic valve, and the utility model patent is related to a kind of normally opened electromagnetism control
Valve processed, more particularly two-way, general open magnetic valve is used for high pressure, high flow capacity occasion, including as gas circuit pipeline
System operatio component uses.
Background technology
Bi-directional electromagnetic control valve is applied to flow of fluid occasion as electric control valve, is led to by controlling to magnet coil
Electricity and power-off, realize the opening and closing of valve.Its application is throughout the control occasion of flow of fluid.For example, magnetic valve application
In gas circuit management system, gas or liquid medium can be controlled to operate, and generator system is not had unnecessary energy dissipation.
Magnetic valve is generally by the electromagnetic coil assembly with plunger and the seal of combination valve seat function.According to this type valve
Standard operation, magnet coil energization under, valve can close and opening under operate.This valve can be normally close valve, directly
Just opening valve to magnet coil energization allows fluid to flow through the valve.Or this valve can be normally open valve, until magnet coil leads to
Electricity just closes valve isolation fluid and flows through the valve.
More specifically, in normally close valve design, when magnet coil is powered, plunger will move and with dynamic seal from valve seat
Remove, to open valve and allow fluid to flow through the valve；When magnet coil powers off, plunger and seal return to original position and carry out shutoff valve
Door, isolation fluid flows through the valve, until magnet coil is re-energised.Or normally open valve design in, when magnet coil power off,
Valve is in opening；When magnet coil is powered, plunger movement makes seal be engaged with valve seat to close valve.Generally two-way
In normally open valve, valve seat is located at the top of sleeve pipe, and seal is located at plunger head.
For high pressure, high flow applications occasion, it is typically due to low reliability and high pressure and participates in this condition, tool
The magnetic valve for having basic plunger and seal design is not preferable.In addition, in two-way normally opened application, valve seat is located at sleeve pipe
Top limits the size of valve seat, flows through the valve so as to limit maximum allowable fluid flow.
Particularly current high pressure, high flow applications occasion, it is a problem for normally open valve design.As described above, when electricity
When magnetic coil powers off, normally open solenoid valve keeps valve opening, so as to allow fluid flow through valve door to make valve until magnet coil is powered
Door is closed.Flowed to according to medium, by the valve seat with high pressure and high flow capacity, plunger must or overcome high pressure and high flow capacity with
Just valve is closed, or arranges that very big return spring is loaded to open valve when power is off.Therefore, magnet coil is necessary
Enough electromagnetic forces are provided flow of fluid is fully offset on plunger to close valve, or overcome heavy return
Spring uses.Conventional normally open valve design easily leak out and（Or）Therefore premature failure does not simultaneously possess under elevated pressure conditions reliable
Property.
The design of other magnetic valves uses two-stage plunger or poppet design.So design provides fluid stream of the control by valve
It is dynamic.But two-stage plunger valve shows low reliability in high pressure, high flow capacity occasion.In the design of two-way normally open valve, two-stage post
Plug valve does not handle high pressure, high flow capacity generally.
Based on above-mentioned viewpoint, it is necessary to which high pressure high flow applications occasion, the electricity designed using two-way normally open valve can be handled
Magnetic control valve；The electromagnetism of the size or complexity also in need that high pressure high flow applications occasion can be handled, valve need not be increased
Valve designs；Also further desirable for can provide without complex operations, manufacture or the integrated electromagnetism that can be achieved with desired function
Valve designs.
Utility model content
The utility model is in view of the above-mentioned problems, provide a kind of normally opened solenoid electric valve, for being positioned at adjacent container
It is interior, between the access road and exit passageway of fluid flow path, applied to high pressure and the occasion of high flow capacity.It is wherein described
Exit passageway limits major bore close to the container.Solenoid electric valve includes main piston and the secondary piston with pilot hole, main work
Plug and time piston open and close pilot hole and main aperture in valve body using independent reciprocating motion.One magnet coil is located at
Valve body is to realize the effective exercise of main piston.One link block is contained in main piston, when being acted on by main piston, in valve body
It is mobile.One central spring, which is arranged between valve body and main piston, to be acting downwardly on link block, particularly when being powered, main work
Plug is moved towards time piston so that the link block is engaged with pilot hole to prevent fluid from flowing through.One helical cuts ring installation
It is looped around around time piston, it is allowed to the sky that the fluid of controlled leak is entered between main piston and secondary piston by helical cuts ring
Between.Multiple cut springs are arranged between main piston and secondary piston, time piston of pressing to down position above secondary piston and
The pressure of lower section is balanced.
In order to solve the above technical problems, the technical scheme that the utility model uses is：A kind of normally open solenoid valve, in height
In pressure and high flow applications occasion, it is positioned in container, the fluid flow path between neighboring entry passage and exit passageway, its
Middle outlet passage defines main aperture, including sleeve pipe, shaft assembly, magnet coil,
Described sleeve pipe limits longitudinal axis；Described shaft assembly is arranged in described sleeve pipe, and shaft assembly includes main work
Plug and time piston, wherein described main piston and described secondary piston can move independently along described longitudinal axis；It is described
Secondary piston be provided with pilot hole close to the end face of main piston, and the pilot hole is with extending to the end face direction away from main piston
Central passage is connected, and central passage is connected with main aperture；The main piston has a link block that may extend into time piston guide hole,
The link block can stop and open the central passage with the relative motion of main piston and time piston, be opened when valve is in
Allow flow of fluid during state, forbid flow of fluid when the valve 4 is in a closed state；The magnet coil is arranged on its vicinity,
For driving main piston from normally open position to closed position；Helical cuts ring around this piston is set around secondary piston,
And the helical cuts ring allows controlled leakage from access road stream with secondary piston and casing-contact, the helical cuts ring simultaneously
Enter the cavity between main piston and secondary piston, in normally open position, keep link block to pass through the past of the secondary piston away from pilot hole
Multiple motion opens and closes the main aperture.
As the preferred of such scheme, the motion of the secondary piston passes through the pressure and main piston of main aperture die cavity and time piston
Between die cavity pressure initiation pressure differential realize.
As the preferred of such scheme, when the pressure of main aperture die cavity is more than die cavity between described secondary piston and main piston
Pressure, described secondary piston is towards main piston movement and therefore opens main aperture.
As the preferred of such scheme, described main piston hinders described link block towards described secondary piston movement
The described pilot hole of plug, so that cavity pressure reaches balance between the pressure of main aperture die cavity and main piston and secondary piston, it is described
Secondary piston by downward pressure to close main aperture.
As the preferred of such scheme, in addition to the connector of described magnet coil and power supply can be connected, when power supply supplies
When electric, described magnet coil can form magnetic flux in described sleeve pipe.
As the preferred of such scheme, when described magnet coil, which is powered, produces magnetic flux, described main piston stress edge
Longitudinal axis movement.
As the preferred of such scheme, described main piston sets centre bore, can limit described link block at center
Moved in hole.
As the preferred of such scheme, described main piston includes the spring for extending to centre bore, the central spring one
End is resisted against described cannula tip inner surface, and the other end is resisted against described link block end face, to provide described sleeve pipe
Separating force between terminal interior surface and the link block end face.
As the preferred of such scheme, described secondary piston includes first end face and second end face, wherein described first
The size of end face is less than the size of described second end face.
As the preferred of such scheme, described pilot hole is located at the upper surface of described secondary piston, described upper surface
Be limited to the cylindrical and described pilot hole in described upper surface it is cylindrical between area, the area of described upper surface is more than described
The area of the cylindrical formation of pilot hole.
The beneficial effects of the utility model are：On the one hand, when control valve no power works, caused by above and below secondary piston
Pressure difference makes fluid enter control valve, and result is that time piston up moves away from main aperture and opens main aperture, as long as pod apertures are opened simultaneously
And allowing time top land and bottom to keep pressure difference, valve remains at opening.When magnet coil energization, main piston is forced
To secondary piston, mobile and link block closes pod apertures, stops fluid by helical cuts ring, make time top land and bottom it
Between pressure balance and make time piston return to lower position to pass through main aperture against main aperture to close fluid.
The another aspect of the utility model patent, solenoid electric valve is used to be positioned in adjacent container, positioned at fluid stream
Between the access road and exit passageway in dynamic path, applied to high pressure and the occasion of high flow capacity, wherein described exit passageway limit
Main aperture is determined close to the container.Solenoid electric valve, which includes sleeve pipe and the shaft assembly being arranged in described sleeve pipe, shaft assembly, to be included
One main piston and one piston, each independently can be moved along casing axis.Secondary piston defines and central passage
The pod apertures of connection, connected by secondary piston with main aperture, when valve is in opening, it is allowed to flow of fluid.Main piston includes
Time link block of piston pod apertures is extended to, by the relative motion of main piston and time piston, the link block can block up
Fill in and open the central passage of the secondary piston.Magnet coil is arranged on its vicinity to realize master piston motion.Helical cuts
Ring is arranged at time piston, and with secondary piston and casing-contact.The helical cuts ring of setting allows controlled leak fluid to pass through
Between the secondary piston and described sleeve pipe, it is allowed to which leak fluid is concentrated in the chamber between main piston and secondary piston.
Solenoid electric valve of the present utility model closely, it is durable, easily fabricated low with cost.The valve can handle high pressure
Operated with high flow capacity without influenceing.
Brief description of the drawings
A kind of Fig. 1-bidirectional high-pressure magnetic valve general view；
A kind of Fig. 2-top view of bidirectional high-pressure magnetic valve；
A kind of Fig. 3-explosive view of bidirectional high-pressure magnetic valve；
A kind of Fig. 4-bidirectional high-pressure magnetic valve sectional view；
Fig. 5-it is a kind of without initial pressure and without bidirectional high-pressure magnetic valve sectional view under "on" position；
Fig. 6-bidirectional high-pressure magnetic valve in Fig. 5 sectional view in the case where there is pressure unpowered state；
Fig. 7-bidirectional high-pressure magnetic valve in Fig. 5 have pressure be powered and valve close before sectional view under state；
Fig. 8-bidirectional high-pressure magnetic valve in Fig. 5 have pressure be powered and valve close after sectional view under state.
Embodiment
With reference to embodiment, specific embodiment of the present utility model is further described.
The utility model describes the solenoid electric valve of reference number 10, preferable solenoid electric valve be it is two-way normally opened, can
To handle high pressure and high flow applications, for example, it is associated with gas management system.The main purpose of solenoid electric valve 10 is to pass through
Fluid flow path between access road and exit passageway controls the flowing of high-pressure gas medium（Such as hydrogen）.Preferable electricity
Magnetic operational control has 1.005CV flow under 1500PSI.When solenoid electric valve 10 in system powers off, two-way normally open valve
It is generally used for being vented, separates, depressurize, unloading, balancing, this power-off may be due to many reason, such as the catastrophic damage of electric power
Lose, control the similar incidents such as power-off, system startup.
As depicted in figs. 1 and 2, the utility model solenoid electric valve is located in adjacent container, neighbouring to be determined by exit passageway
The main aperture of justice, the connector 14 of electrical connection magnet coil 16 and power supply, it is arranged on inside and extends through magnet coil 16
Sleeve pipe 18, end stop 20, it has dismountable attaching nut 22.
As Fig. 3 and Fig. 4 are further shown, sleeve pipe 18 have to top 26 and in nut 30, with tubaeform end 28
Pipe 24.Flared ends 28 are connected by welding with nut 30, and end stop 20 is upward from the inner surface 32 in pipe 24
Extension.End stop 20, pipe 24 and flange nut 30 form valve body 34.
As Fig. 3 and Fig. 4 are further shown, shaft assembly 36 is located in sleeve pipe 18, and shaft assembly 36 includes the He of top main piston 38
Bottom time piston 40, main piston 38 have top surface 42 and basal surface 44, and have insertion centre bore 46.Limiting section as shown in Figure 4
48 in centre bore 46 between top surface 42 and bottom surface 44, moved for engaging and limiting link block 50, such as it is following enter one
Step description.
As shown in Figure 3 and Figure 4, link block 50 is located in the centre bore 46 of main piston 38, link block 50 have flat-top end 52, in
Between shoulder 54 and tapering point 56.The Intermediate shoulder 54 of link block 50 abuts against limiting section 48 so that Intermediate shoulder 54 is maintained at into spacing
In portion 48.The size of link block 50 is set in order to which tapering point 56 extends past the basal surface 44 of main piston 38.Similarly, seal
The size of pin 50 is set in order to which it can be withdrawn into the centre bore 46 of main piston 38.Central spring 58 is at least partially disposed at master
In the centre bore 46 of piston 38, and upwardly extend so as to contact and react on the inner surface 32 of end stop 20.Center
Spring is kept contacting with inner surface 32, and acts on the flat-top end 52 of link block 50, and downward power is provided to link block 50.Enclose
Set multiple recesses 60 around the basal surface 44 of main piston 38, multiple recesses each of extend into main piston, from basal surface 44 to
It is arranged essentially parallel to the extension of centre bore 46.One in multiple cut springs 64 is accommodated in each of multiple recesses 60,
Multiple cut springs 64 act on the surface of recess 60 and the upper surface 68 of time piston 40, to provide main piston 38 and time piston 40
Between separating force.
Secondary piston 40 is arranged in sleeve pipe 18, below main piston 38 and adjacent.Pilot hole 70 is disposed along time work
The upper surface 68 of plug 40 and towards main piston 38.As shown in figure 4, pilot hole 70 is apered to central passage 72, time of Longitudinal extending
The lower surface 74 of piston 40.The upper surface 68 of secondary piston 40 be defined on upper surface 68 neighboring and pilot hole 70 neighboring it
Between.The surface area of upper surface 68 is more than the surface area of pilot hole.Lower surface 74 has the external diameter bigger than upper surface 68, and sets
One groove 76, rubber parts 78 are maintained in groove 76.Secondary piston 40 sets annular groove 84 to surround outer surface 86, the quilt of annular groove 84
It is arranged at the radially inner side of flange nut 30.Helical cuts ring 88 is arranged on around time piston 40, in annular groove 84, and is stretched out
To contact and be resisted against the inner surface 90 of flange nut 30.
According to the utility model, the Successful Operation of solenoid electric valve need main piston 38, link block 50 and pilot hole 70 it
Between be accurately aligned.The major diameter fit of main piston 38 and time piston 40 is strictly controlled in inner tube 24.In addition, in main piston 38
The cooperation of link block 50 is tightly controlled.Link block 50 hits pilot hole 70 in a manner of part is aligned substantially.
As shown in figure 4, secondary piston 40 fits snugly in the bottom of pipe 24.Because in order to valve 10 appropriate operation, it is necessary to control
Bypass flow leakage processed, cooperation of the secondary piston 40 in valve body 34 is crucial to the function of valve 10.Flange nut 30 have than
24 broader internal diameter of inner tube, and have between flange nut 30 and secondary piston 40 than more skies between inner tube 24 and secondary piston 40
Between.Therefore, secondary piston 40 loosely coordinates in flange nut 30, but secondary piston is fitted snugly in inner tube 24.However, flange
Bypass leakage in nut 30 is controlled in expected range, or even is matched somebody with somebody by the pine of helical cuts ring and time piston 40.
As described above, valve 10 utilizes two-stage piston, design includes the main piston 38 that can be moved in valve body 34 and time piston
40, by controlling flow of fluid in access road " entrance " and exit passageway " outlet ".When operating, pilot hole 70 passes through main work
The motion of plug 38 and link block 50 back and forth opens and closes.One main aperture 92 for being arranged on exit passageway passes through the past of secondary piston 40
Move and open and close again.The motion of main piston 38 and link block 50 is realized by being connected to the magnet coil 16 of power supply.Match somebody with somebody
The power supply put directly supplies electricity to magnet coil 16.The fortune of the Middle shaft assembly 36 of valve 10 is realized in the energization and power-off of magnet coil 16
It is dynamic.Typically realized simultaneously by some influences of motion of main piston 38, the motion of secondary piston 40 by the pressure differential in valve 10,
It is based specifically on main piston 38, the pressure differential of the cavity of secondary piston 40 and helical cuts ring cavity below 88.The utility model is special
It is not related to the motion that accurate control pressure difference realizes time piston 40.
In a word, valve 10 of the present utility model is normally opened design.That is, valve 10 is opened and fluid allows to flow through valve 10
Until magnet coil 16 is energized and shutoff valve 10 is to close the flowing of fluid.
The course of work of the present utility model is as follows：
No pressure, no power：
As shown in figure 5, in the working condition, the no power of magnet coil 16, and no fluid flow through valve 10 causes pressure.
Valve 10 is in opening, but can not work until pressurization.Because no electric current is by magnet coil, main piston 38 is separated bullet
Spring 64 is pushed up on the inner surface 32 for leaning against end stop 20.Because there is no pressure effect in valve body 34, secondary piston 40
The spring 64 that is separated pushes down on and against main aperture 92.Centre bore of four cut springs 64 radially around main piston 38
46。
There are pressure, no power：
As shown in fig. 6, in the working condition, the no power of magnet coil 16.Because the no power of magnet coil 16, main piston 38
All the time rest on the inner surface 32 of end stop 20.However, valve 10 is to be pressurized, main aperture 92 is opened.Especially, fluid flows through
The helical cuts ring 88 installed around secondary piston and the space entered between main piston 38 and secondary piston 40.Fig. 6 to Fig. 8 arrow
Represent fluid flow path of the fluid by valve.When the pressure between main piston 38 and secondary piston 40 is less than under helical cuts ring 88
Pressure differential is produced during the pressure of side.Pressure differential causes time piston 40 to move up, and result is that the movement of time piston 40 makes main aperture 92
Open.
There is pressure, be powered：
As shown in Figure 7 and Figure 8, in the working condition, magnet coil 16 is powered and valve 10 is pressurized.The magnet coil 16 of energization
Pull main piston 38 downward.When main piston 38 moves down, link block 50 equally moves down, until link block 50 is charged into simultaneously
Block pilot hole 70.Once pilot hole 70 is closed, the pressure between main piston 38 and secondary piston 40 becomes substantially equal to spiral
The pressure of the lower section of otch ring 88.Therefore, pressure substantially becomes to balance in the pressure difference ends around secondary piston 40 and valve 10.
As shown in figure 8, when pressure balance, secondary piston 40 is separated, and spring 64 is downward to press and closes main aperture 92, and valve 10, which is in, closes
State.Because main aperture 92 is blocked by secondary piston 40, fluid flow through valve 10 is cut off, and valve 10 is kept in off position until electromagnetic wire
Distress resolves in the power-off of circle 16 or valve 10.
During the work of valve 10, helical cuts ring 88 allows the sky between the main piston 38 and secondary piston 40 that fluid leaks
Between in.The effect of helical cuts ring 88 is similar to traditional piston ring, but is to provide controllable fluid and leaks through time piston.It is preferred that
Ground, helical cuts ring 88 is by polytetrafluoroethylene (PTFE)（PTFE）Make and there is accurate size to go to fit around to be formed in secondary piston 40
In annular groove 84.Helical cuts ring 88 and time piston 40 are assemblied in inner tube 24 to be limited in the inner chamber of valve body 34 together.
As described above, when the top surface of secondary piston 40 and bottom surface produce pressure difference, secondary piston 40 moves back and forth in inner tube 24.As existed above
Described in the working condition for having pressure and being powered, once main piston 38 and moving down for link block 50 close pilot hole 70, spiral shell
Rotary-cut choma 88, which provides one, allows time controllable leak condition in the peripheral region of piston 40.When magnet coil powers off, pressure drop
Produce, then carry out pressure equilibrium and allow valve 10 effectively and efficiently to work.
Preferably, link block 50 is made of acetyl based polyalcohol, and other can also be used not influence the polymerization that valve 10 works
Thing.As long as link block has high-durability.Link block 50 uses " impact " action to increase its effective force when working, in order to work as
During power-off, it can be drawn out out of pilot hole 70.As described above, when magnet coil 16 is powered, the magnetic force of main piston 38 pulls
Downwards against on the upper surface 68 of secondary piston.Because main piston 38 moves down, cause link block 50 move down engagement and
Close and be oriented to sky 70.As pilot hole 70 is closed, the pressure differential collapses around secondary piston 40, time piston 40 is set to move down closing master
Hole 92 simultaneously prevents flow of fluid.
Central spring 58 provides downward power to help to seal at pilot hole 70 to link block 50.Central spring 58 is also made
With on secondary piston 40 and cut spring 64, once the pressure around secondary piston 40 is balanced, by aiding in, time piston 40 is downward.
Pressure difference between access road and exit passageway can be also acted on link block 50, and link block 50 is tightly pushed into
In pilot hole 70.When magnet coil 16 is powered off, it is necessary to which substantial amounts of power makes link block 50 leave pilot hole 70.Although cut spring
64 provide some power, but it can not make link block 50 leave pilot hole 70.Main piston 38 has certain sky from end stop 20
Between, after magnet coil 16 powers off so that certain inertia is carried when main piston 38 moves upwards, this inertia provides one relatively
Small dynamic force is so that link block 50 ejects from pilot hole 70.This feature makes the link block 50 of valve 10 substantially work well,
So as to prevent producing leakage when it is assumed that valve 10 is closed.
Cut spring 64 and central spring 58 help to ensure the normal function of valve 10.For example, when magnet coil 16 powers off
When, the cut spring 64 of radial positioning, which provides enough power, makes main piston 38 be separated with time piston 40.Central spring 58 acts on
On link block 50, once but link block 50 be placed in pilot hole 70, central spring act also on time piston 40 and point
From on spring 64.
Therefore, magnet coil 16 must have the elastic force for overcoming cut spring 64 to close the magnetic force of main piston 38, to ensure
The normal function of valve 10.
Preferably, magnet coil 16 is random coil coil, and on sleeve pipe 18, main piston 38 connects with time piston 40
Close to the center of magnet coil 16 at conjunction.Magnetic flux can be produced when magnet coil 16 is powered, electromagnetic circuit is formed, acts on simultaneously
In main piston 38 and time piston 40.Magnetic flux caused by magnet coil must be enough to produce between main piston 38 and secondary piston 40
Attraction is more than total power of cut spring 64.
The utility model solenoid electric valve is applicable to a variety of occasions, and the Stirling of the present utility model that is particularly applicable in starts
On machine.In Stirling engine, pumped (conveying) medium is used as using hydrogen.In the both sides of double acting piston, hydrogen is heated and cooling
Make hydrogen expander and contraction.In order to keep highest efficiency, the height of average system pressure depends on what is effectively heated and cool down
Amount.In order that hydrogen smoothly shuttles within the engine, system employs typical high-voltage bidirectional normally open valve.If lost in engine
Load, removing the fast reaction of heating and cooling source can not realize that engine is by rapid stall or destroys oneself.Two-way normally open valve
10 can be used in Stirling engine to disconnect and connect the double acting piston of both sides, cause the pressure difference acted on piston to disappear
Lose, so that engine stop destroys oneself.
For those skilled in the art, the technical scheme described in foregoing embodiments can still be repaiied
Change, or equivalent substitution is carried out to which part technical characteristic, all within the spirit and principles of the utility model, that is made is any
Modification, equivalent substitution, improvement etc., should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of normally opened solenoid electric valve, in high pressure and high flow applications occasion, is positioned in container, neighboring entry passage and
Fluid flow path between exit passageway, wherein exit passageway define main aperture, it is characterised in that including sleeve pipe, shaft assembly,
Magnet coil,
Described sleeve pipe limits longitudinal axis；Described shaft assembly is arranged in described sleeve pipe, shaft assembly include main piston and
Secondary piston, wherein described main piston and described secondary piston can move independently along described longitudinal axis；Described time
Piston is provided with pilot hole, and the pilot hole and the center to the end face direction extension away from main piston close to the end face of main piston
Passage is connected, and central passage is connected with main aperture；The main piston has a link block that may extend into time piston guide hole, described
Link block can stop with the relative motion of main piston and time piston and open the central passage, when valve is in opening
When allow flow of fluid, forbid flow of fluid when the valve 4 is in a closed state；The magnet coil is arranged on its vicinity, is used for
Main piston is driven from normally open position to closed position；Helical cuts ring around this piston is set around secondary piston, and should
Helical cuts ring allows controlled leakage to flow into master from access road with secondary piston and casing-contact, the helical cuts ring simultaneously
Cavity between piston and secondary piston, in normally open position, link block is kept to pass through the reciprocal fortune of the secondary piston away from pilot hole
It is dynamic to open and close the main aperture.
2. normally opened solenoid electric valve as claimed in claim 1, it is characterised in that the motion of the secondary piston passes through main aperture die cavity
Pressure and main piston and secondary piston between die cavity pressure initiation pressure differential realize.
3. normally opened solenoid electric valve as claimed in claim 2, it is characterised in that when the pressure of main aperture die cavity is more than described time
The pressure of die cavity between piston and main piston, described secondary piston is towards main piston movement and therefore opens main aperture.
4. normally opened solenoid electric valve as claimed in claim 2, it is characterised in that described main piston is towards described secondary piston
Motion, described link block is set to block described pilot hole, so that between the pressure of main aperture die cavity and main piston and secondary piston
Cavity pressure reaches balance, and described secondary piston is by downward pressure to close main aperture.
5. normally opened solenoid electric valve as claimed in claim 1, it is characterised in that also include connecting described magnet coil and
The connector of power supply, when power supply is powered, described magnet coil can form magnetic flux in described sleeve pipe.
6. normally opened solenoid electric valve as claimed in claim 5, it is characterised in that produce magnetic flux when described magnet coil is powered
When, described main piston stress moves along longitudinal axis.
7. normally opened solenoid electric valve as claimed in claim 1, it is characterised in that described main piston sets centre bore, can be with
The described link block of limitation moves in centre bore.
8. normally opened solenoid electric valve as claimed in claim 7, it is characterised in that described main piston includes extending to centre bore
Spring, described central spring one end is resisted against described cannula tip inner surface, and the other end is resisted against described link block end
Face, to provide the separating force between described cannula tip inner surface and the link block end face.
9. normally opened solenoid electric valve as claimed in claim 1, it is characterised in that described secondary piston includes first end face and the
Biend, wherein the size of described first end face is less than the size of described second end face.
10. normally opened solenoid electric valve as claimed in claim 1, it is characterised in that described pilot hole is positioned at described time work
The upper surface of plug, described upper surface be limited to the cylindrical and described pilot hole in described upper surface it is cylindrical between area, it is described
Upper surface area be more than described pilot hole cylindrical formation area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228554.6U CN206626250U (en) | 2017-03-10 | 2017-03-10 | A kind of normally opened solenoid electric valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720228554.6U CN206626250U (en) | 2017-03-10 | 2017-03-10 | A kind of normally opened solenoid electric valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206626250U true CN206626250U (en) | 2017-11-10 |
Family
ID=60212043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720228554.6U Withdrawn - After Issue CN206626250U (en) | 2017-03-10 | 2017-03-10 | A kind of normally opened solenoid electric valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206626250U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678431A (en) * | 2017-03-10 | 2017-05-17 | 嘉兴科锐自动化科技有限公司 | Normally open solenoid-operated valve |
-
2017
- 2017-03-10 CN CN201720228554.6U patent/CN206626250U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106678431A (en) * | 2017-03-10 | 2017-05-17 | 嘉兴科锐自动化科技有限公司 | Normally open solenoid-operated valve |
| CN106678431B (en) * | 2017-03-10 | 2022-12-27 | 林兵磊 | Normally open solenoid electric valve |
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Granted publication date: 20171110 Effective date of abandoning: 20221227 |