CN206626245U - A kind of normally closed aciculiform magnetic valve - Google Patents

Abstract

The utility model discloses a kind of normally closed aciculiform magnetic valve, to control gasometry to enter in engine in Stirling engine, realizes engine normal operation.The system is made up of parts such as sleeve pipe, piston and magnet coils, and 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

A kind of normally closed aciculiform magnetic valve

Technical field

The utility model patent is a kind of normally closed aciculiform high-pressure solenoid valve, and the utility model patent is related to a kind of electromagnetism control Valve processed, more particularly aciculiform, general aciculiform formula magnetic valve is used for high pressure, high flow capacity occasion, including as gas circuit pipeline System operatio component uses.

Background technology

Normally closed solenoid electric 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.

Particularly current high pressure, high flow applications occasion, it is a problem for normally close valve design.As described above, when electricity When magnetic coil powers off, normally closed solenoid valve keeps valve to close, so as to prevent fluid flow through valve door from making valve until magnet coil is powered Door is opened.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 opened, or arranges that very big return spring is loaded to close valve when power is off.Therefore, magnet coil is necessary Enough electromagnetic forces are provided flow of fluid is fully offset on plunger to open valve, or overcome heavy return Spring uses.Conventional normally close 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 normally close valve design, two-stage plunger valve Generally high pressure, high flow capacity are not handled.

Based on above-mentioned viewpoint, it is necessary to which high pressure high flow applications occasion, the electromagnetism control designed using normally close valve can be handled Valve processed；It is also in need can handle high pressure high flow applications occasion, the magnetic valve of the size or complexity that need not increase valve is set Meter；Also set without complex operations, manufacture or the integrated magnetic valve that can be achieved with desired function further desirable for can provide Meter.

Utility model content

The utility model in view of the above-mentioned problems, provide a kind of i.e. normally closed aciculiform high-pressure solenoid valve of normally closed aciculiform magnetic valve, For being positioned in adjacent container, between the access road and exit passageway of fluid flow path, applied to high pressure and The occasion of high flow capacity.Wherein described exit passageway limits major bore close to the container.Solenoid electric valve has a piston, piston Main aperture is opened and closed using independent reciprocating motion in valve body.One magnet coil is located at valve body to realize having for piston Effect motion.One link block is contained in piston, when piston effect, is moved in valve body.One central spring is arranged on valve It is acting downwardly between body and piston on link block, particularly when power is off, piston moves towards major bore so that the sealing Pin is engaged with major bore to prevent fluid from flowing through.

In order to solve the above technical problems, the technical scheme that the utility model uses is：A kind of normally closed aciculiform magnetic valve, In high pressure and high flow applications occasion, it is positioned in container, the flow of fluid road between neighboring entry passage and exit passageway Footpath, wherein exit passageway define main aperture, and the magnetic valve includes sleeve pipe, piston, magnet coil,

Described sleeve pipe limits longitudinal axis；Described piston is arranged in described sleeve pipe, and described piston can be independent Moved along described longitudinal axis on ground；The piston has a link block that may extend into major bore, and the link block can be with As piston movement stops and opens the main aperture, allow flow of fluid when valve is in opening, shape is closed when valve is in Forbid flow of fluid during state；The magnet coil is arranged on its vicinity, for band piston from normally closed position to open position, The main aperture is opened and closed by the reciprocating motion of the piston.

As the preferred of such scheme, link block uses needle-like structures.

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 piston stress along Longitudinal axis moves.

As the preferred of such scheme, described piston sets centre bore, can limit described link block in centre bore Interior movement.

As the preferred of such scheme, described piston includes the spring for extending to centre bore, described central spring one end Described cannula tip inner surface is resisted against, the other end is resisted against described link block end face, to provide described sleeve end Separating force between portion's inner surface and the link block end face.

The beneficial effects of the utility model are：On the one hand, when control valve no power works, by central elastic on piston The pressure of spring, result are that piston moves down and closes main aperture close to main aperture, and valve remains in off position.Work as magnet coil It is powered, forces piston to move up and open main aperture away from main aperture, fluid passes through main aperture.

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 includes sleeve pipe and the piston being arranged in described sleeve pipe, and piston can be independent Moved along casing axis.Piston includes extending to the link block of major bore, by the relative motion of piston and major bore, The link block can block and open the primary porthole channel.Magnet coil is arranged on its vicinity to realize piston movement.

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-normally closed aciculiform high-pressure solenoid valve general view；

A kind of Fig. 2-top view of normally closed aciculiform high-pressure solenoid valve；

A kind of Fig. 3-explosive view of normally closed aciculiform high-pressure solenoid valve；

A kind of Fig. 4-normally closed aciculiform high-pressure solenoid valve sectional view；

A kind of Fig. 5-normally closed high-pressure solenoid valve sectional view under obstructed electricity condition；

A kind of Fig. 6-normally closed high-pressure solenoid valve sectional view under "on" position.

Embodiment

With reference to embodiment, specific embodiment of the present utility model is further described.

The utility model describes aciculiform magnetic valve 10, can handle high pressure and high flow applications, for example, with gas delivery System is associated.The main purpose of aciculiform magnetic valve 10 be by the fluid flow path between access road and exit passageway come Control the flowing of high-pressure gas medium（Such as hydrogen）.

As depicted in figs. 1 and 2, the utility model aciculiform magnetic 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, the sleeve pipe 18 of magnet coil 16 is extended through, is had removable The end stop 20 of the attaching nut 22 unloaded.

As Fig. 3 and Fig. 4 are further shown, the lower end of sleeve pipe 18 has nut 30, and end stop 20 is from positioned at sleeve pipe 18 Inner surface 32 is upwardly extended and stretched out outside sleeve pipe, has sealing ring 31 between end stop 20 and sleeve pipe 18, prevents fluid past External leakage, end stop 20, sleeve pipe 18 and sealing ring 31 form valve body 34.

As Fig. 3 and Fig. 4 are further shown, piston 38 is located in sleeve pipe 18, and piston 38 has top surface 42 and basal surface 44, And have insertion the i.e. stepped central through hole 46 of centre bore, as shown in figure 4, limiting section 48 in centre bore 46 positioned at top surface 42 with Between bottom surface 44, moved for engaging and limiting link block 50, it is as described further below.

As shown in Figure 3 and Figure 4, link block 50 is located in the centre bore 46 of piston 38, and link block 50 has flat-top end 52, centre Shoulder 54 and tapering point 56, the Intermediate shoulder 54 of link block 50 abut against limiting section 48 so that Intermediate shoulder 54 is maintained at into limiting section On 48, the size of link block 50 is set in order to which tapering point 56 extends past the basal surface 44 of piston 38, similarly, link block 50 Size set in order to which it can be withdrawn into the centre bore 46 of piston 38, central spring 58 is at least partially disposed at piston 38 In centre bore 46, and upwardly extend so as to contact and react on the inner surface 32 of end stop 20, central spring is kept Contact, and acted on the flat-top end 52 of link block 50 with inner surface 32, downward power is provided to link block 50.

According to the utility model, the Successful Operation of aciculiform magnetic valve is needed between piston 38, link block 50 and major bore 70 Accurate alignment, the major diameter fit of piston 38 is strictly controlled in sleeve pipe 18, in addition, the cooperation quilt of the link block 50 in piston 38 Strict control, link block 50 hit major bore 70 in a manner of part is aligned substantially.

As described above, aciculiform magnetic valve 10 utilizes piston, the piston 38 that can be moved in valve body 34 is designed, by entrance Passage " entrance " and exit passageway " outlet " control flow of fluid, the motion of piston 38 and link block 50 is by being connected to power supply Magnet coil 16 realized, the power supply of configuration directly supplies electricity to magnet coil 16, and valve is realized in the energization and power-off of magnet coil 16 The motion of piston 38 in 10.

In a word, aciculiform magnetic valve 10 of the present utility model is normally closed design, that is to say, that aciculiform magnetic valve 10 close and Fluid is prevented to flow through aciculiform magnetic valve 10 until magnet coil 16 is energized and opens aciculiform magnetic valve 10 to allow the stream of fluid It is dynamic.

The course of work of the present utility model is as follows：

No power：

As shown in figure 5, in the working condition, the no power of magnet coil 16.Aciculiform magnetic valve 10 is closed, due to There is no electric current to be pushed down on and be resisted against in major bore 70 by central spring 58 by magnet coil, link block 50.

It is powered：

As shown in fig. 6, in the working condition, magnet coil 16 is powered, and the magnet coil 16 of energization pulls piston 38 upward, When piston 38 moves up, link block 50 equally moves up, until the upper surface 42 of piston 38 is resisted against the inner surface of sleeve pipe 18 On 32, now, link block 50 is in opening away from major bore 70, valve 10

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, the head 56 of link block 50 uses aciculiform shape, as described above, when magnet coil 16 During energization, the magnetic force of piston 38 is pulled and is upwardly against on the inner surface 32 of sleeve pipe 18, because piston 38 moves up, causes link block 50 move upwardly away from pilot hole 70, open main aperture 92 and allow flow of fluid.

Central spring 58 provides downward power to help to seal at major bore 70 to link block 50, access road and outlet Pressure difference between passage can be also acted on link block 50, and link block 50 is tightly pushed into major bore 70, so as to prevent working as Leakage is produced when aciculiform magnetic valve 10 is closed.

Therefore, magnet coil 16 must have the elastic force for overcoming central spring 58 to close the magnetic force of piston 38, to ensure pin The normal function of shape magnetic valve 10.

Preferably, magnet coil 16 is random coil coil, and on sleeve pipe 18, the inner surface 32 of sleeve pipe 18 is close to electricity The center of magnetic coil 16, magnetic flux can be produced when magnet coil 16 is powered, form electromagnetic circuit, while act on piston 38, Magnetic flux caused by magnet coil must be enough to produce the pressure difference between central spring 58 and access road and exit passageway Total power.

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 quantitative enters engine, system employs typical normally close valve.

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 (6)

1. A kind of 1. normally closed aciculiform magnetic valve, it is characterised in that in high pressure and high flow applications occasion, it is positioned in container, it is adjacent Fluid flow path closely between access road and exit passageway, wherein exit passageway define main aperture, and the magnetic valve includes Sleeve pipe, piston, magnet coil,

   Described sleeve pipe limits longitudinal axis；Described piston is arranged in described sleeve pipe, and described piston can be independently along Described longitudinal axis movement；The piston has a link block that may extend into major bore, and the link block can be with Piston movement stops and opens the main aperture, allows flow of fluid when valve is in opening, when the valve 4 is in a closed state Forbid flow of fluid；The magnet coil is arranged on its vicinity, for band piston from normally closed position to open position.
2. 2. normally closed aciculiform magnetic valve as claimed in claim 1, it is characterised in that link block uses needle-like structures.
3. 3. normally closed aciculiform magnetic 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.
4. 4. normally closed aciculiform magnetic valve as claimed in claim 3, it is characterised in that produce magnetic flux when described magnet coil is powered When, described piston stress moves along longitudinal axis.
5. 5. normally closed aciculiform magnetic valve as claimed in claim 1, it is characterised in that described piston sets centre bore, can limit The described link block of system moves in centre bore.
6. 6. normally closed aciculiform magnetic valve as claimed in claim 5, it is characterised in that described piston includes extending to centre bore Spring, described central spring one end are 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.