CN114562592B

CN114562592B - Electromagnetic valve for ultrahigh-temperature high-pressure large-flow quick reaction

Info

Publication number: CN114562592B
Application number: CN202210455437.9A
Authority: CN
Inventors: 毛杉海; 顾国云
Original assignee: Yuyao Sanlixin Solenoid Valve Co ltd
Current assignee: Yuyao Sanlixin Solenoid Valve Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-07-29
Anticipated expiration: 2042-04-28
Also published as: CN114562592A

Abstract

The invention provides an ultrahigh-temperature high-pressure high-flow quick reaction electromagnetic valve which comprises a movable valve core assembly, a magnetism isolating pipe assembly and a coil assembly, wherein the movable valve core assembly comprises a central pipe, an upper movable iron core and a lower movable iron core, and a magnetism isolating ring is arranged between the upper movable iron core and the lower movable iron core; the magnetism isolating pipe assembly comprises an upper fixed iron core and a lower fixed iron core, wherein the upper fixed iron core is arranged opposite to the upper movable iron core, and the lower fixed iron core is arranged opposite to the lower movable iron core; the coil assembly comprises an upper coil corresponding to the upper movable iron core, a lower coil corresponding to the lower movable iron core, and a first magnetic conduction plate and a second magnetic conduction plate which are arranged on two sides of the lower coil, a magnetism isolating piece is arranged between the upper coil and the lower coil, a third magnetic conduction plate is arranged at the lower end of the upper coil, and the first magnetic conduction plate and the third magnetic conduction plate are respectively positioned on two sides of the magnetism isolating piece; the ultrahigh-temperature high-pressure high-flow quick-reaction electromagnetic valve provided by the invention overcomes the defects of long opening and closing response time and inapplicability to high-temperature high-pressure environments of the existing electromagnetic valve.

Description

Electromagnetic valve for ultrahigh-temperature high-pressure large-flow quick reaction

Technical Field

The invention relates to the field of electromagnetic valves, in particular to an ultrahigh-temperature high-pressure high-flow quick response electromagnetic valve.

Background

The medium that current solenoid valve is suitable for usually uses neutral gas and neutral liquid as the owner, and the sealing member uses rubber as the main part, and special medium uses engineering plastics as the assistance, and when the medium was super high temperature high pressure, all inside components and parts of solenoid valve will all become invalid, and the coil can burn because of high temperature, and the sealing member can melt because of high temperature, and the material can warp because of high temperature.

The existing electromagnetic valve is only suitable for fuels such as natural gas, coal gas, gasoline, diesel oil, kerosene and the like, the electromagnetic valve is used for controlling the on-off of the fuels, the opening and closing of the electromagnetic valve needs a process, and the fuels also need a plurality of processes such as ignition, combustion, injection and the like after passing through an outlet of the electromagnetic valve. The existing electromagnetic valve only can use fuel as a medium, and when the electromagnetic valve is really applied, the response time, the precision control and the like have great difference with international millisecond-level reaction.

When the medium is high pressure, the general electromagnetic valve adopts a pilot structure, the switch can generate a differential pressure forming process, the time for closing the electromagnetic valve cannot be cut off rapidly at all, and the electromagnetic valve is difficult to be applied in some places with severe switching speed. Especially, when some flyers realize rapid orbit change, very high requirements are put on the switching time and the response speed of the electromagnetic valve.

Most of the existing electromagnetic valves adopt single coils, and some manufacturers also adopt a double-coil design, but the most critical problem is often ignored, how to improve the opening speed and pressure by the double-coil and the multi-coil with multiple magnetic performance is avoided, and each coil is not only responsible for the area; some manufacturers increase the power of the solenoid coil to increase the response speed of the solenoid valve in order to increase the opening speed, but ignore the key point of how to quickly reset and close the solenoid valve, and the solenoid valve is an opening and closing process, which is not possible.

Disclosure of Invention

The technical problem to be solved.

The invention aims to solve the problem of providing an ultrahigh-temperature high-pressure high-flow quick response electromagnetic valve so as to overcome the defects of long opening and closing response time and inapplicability to high-temperature high-pressure environments of the existing electromagnetic valve.

The second technical proposal.

In order to solve the technical problem, the invention provides an ultrahigh-temperature high-pressure high-flow quick response electromagnetic valve, which comprises:

the movable valve core assembly comprises a slidable central pipe, an upper movable iron core and a lower movable iron core which are arranged on the outer wall of the central pipe at intervals along the axial direction, and a magnetism isolating ring is arranged between the upper movable iron core and the lower movable iron core.

And the magnetism isolating pipe assembly is sleeved outside the movable valve core assembly and comprises an upper fixed iron core and a lower fixed iron core, wherein the upper fixed iron core is arranged opposite to the upper movable iron core, and the lower fixed iron core is arranged opposite to the lower movable iron core.

The coil assembly is arranged on the outer side of the magnetism isolating pipe assembly and comprises an upper coil corresponding to the upper movable iron core and a lower coil corresponding to the lower movable iron core, and a magnetism isolating piece is arranged between the upper coil and the lower coil; the coil component further comprises a first magnetic conduction plate and a second magnetic conduction plate which are arranged on two sides of the lower coil, a third magnetic conduction plate is arranged at the lower end of the upper coil, and the first magnetic conduction plate and the third magnetic conduction plate are respectively located on two sides of the magnetic isolation piece.

The electromagnetic valve adopts a double-coil superposition mode, can enhance the opening speed of the electromagnetic valve, breaks the opening mode of a single coil of the traditional electromagnetic valve, and enables the electromagnetic valve to have quick response and strong opening force. In the invention, two sides of the upper coil are provided with accessories of two magnetic materials of an upper fixed iron core and a third magnetic conduction plate, two sides of the lower coil are provided with accessories of two magnetic materials of a first magnetic conduction plate and a second magnetic conduction plate, and the middle part is provided with a magnetic isolation piece; when two coils are electrified simultaneously, each coil can generate a magnetic field, the magnetic fields can interfere with each other at the superposition intersection, and when a common movable iron core is placed in the center, the direction of the movable iron core cannot be determined, and displacement cannot occur; in the invention, a magnetic isolation material is arranged between the two coils, so that the magnetic circuits of the upper coil and the lower coil become an individual body and act on the respective fixed iron core and the movable iron core respectively, and the attraction force is multiplied.

Further, the height of the upper fixed iron core is 1/3 of the total height of the outer protruding part of the upper fixed iron core, the upper coil and the third magnetic conductive plate, and the height of the lower fixed iron core is 1/3 of the total height of the first magnetic conductive plate, the lower coil and the second magnetic conductive plate. The center of going up movable core is located go up fixed iron core outer convex part go up the coil with 1/3 departments of third magnetic conduction board gross height, the center of lower movable core is located first magnetic conduction board down the coil with 1/3 departments of second magnetic conduction board gross height.

The movement track of the movable valve core assembly is influenced by the position of the fixed iron core, and the upper fixed iron core and the lower fixed iron core of the electromagnetic valve magnetism isolating pipe assembly are designed in the optimal positions, so that the electromagnetic valve magnetism isolating pipe assembly has the optimal attraction point and is matched with the optimal magnetism isolating design of the movable valve core assembly, the electromagnetic valve can exert the strongest magnetic performance, and the opening speed is greatly improved.

Further, an upper spring is installed between the upper movable iron core and the upper fixed iron core, the magnetism isolating ring is fixed at the end of the upper movable iron core, the upper spring enables the magnetism isolating ring to abut against the lower fixed iron core, and an upper spring slot for installing the upper spring is formed in the upper fixed iron core; the lower movable iron core and the lower fixed iron core are provided with a lower spring therebetween, and the lower fixed iron core is provided with a lower spring groove for mounting the lower spring.

The electromagnetic valve magnetic field force lifting mark increases the opening force of the electromagnetic valve, and for the quick response electromagnetic valve, the quick opening capability of the electromagnetic valve is not enough, and the quick closing capability is needed; the invention adopts the innovation of double fixed iron cores and double springs, when the power-off magnetic field of the electromagnetic valve disappears, the springs are needed to reset and seal, and the double springs are respectively arranged at the positions of the fixed iron cores of the coils, so that the rebound stress of the movable valve core assembly is uniform, and the purpose of quickly closing the electromagnetic valve can be achieved.

Further, the electromagnetic valve for ultrahigh temperature, high pressure, large flow rate and rapid reaction further comprises:

the housing is sleeved outside the coil assembly, and one end of the housing is provided with a horn-shaped medium jet orifice;

the valve body is fixed at the other end of the housing, a medium inlet is formed in the valve body, and one end of the central pipe is arranged in the valve body and communicated with the medium inlet.

Further, a heat dissipation groove is formed in the inner wall of the valve body, and stepped heat dissipation structures are arranged on two sides of the heat dissipation groove; the ladder heat radiation structure comprises a high-temperature-resistant ceramic piece, a titanium alloy sealing piece and a high-temperature spraying material which are sequentially connected, and the outer wall of the central tube is in sliding contact with the high-temperature-resistant ceramic piece. Wherein, the spraying has the insulating layer on the inner wall of center tube, the thickness of insulating layer is 20 mm.

Because the high-temperature flame directly acts on the electromagnetic valve, the outer wall of the central tube of the electromagnetic valve is provided with the heat dissipation groove and is in hard connection with the high-temperature resistant ceramic chip, when the central tube moves, a very good airtight gap is kept, the flame can be effectively blocked from entering, and the high-temperature transmission can be prevented; the thermal insulation layer with 1500 ℃ resistance is sprayed on the inner wall of the central tube, high temperature can be effectively isolated, when the thickness of the coating layer reaches 20mm, after 1500 ℃ flame (combustion medium) is introduced into the central tube, the temperature of the outer side of the central tube is only 60 ℃ under the action of the thermal insulation layer, and the electromagnetic coil can be well protected from being influenced by high temperature.

Furthermore, a jet flow guide device is arranged at a position, close to the medium jet port, of the housing, the jet flow guide device comprises a flow guide seat, a metal sealing element corresponding to the central pipe is arranged on the flow guide seat, a plurality of jet holes are annularly and equidistantly arranged on the outer side of the metal sealing element, and the jet holes are obliquely arranged towards the outer side; a plurality of arc-shaped backflow grooves are annularly and equidistantly arranged on the outer side of the injection hole and are arranged in the vertical direction.

Due to the ultra-high temperature medium (flame), the common sealing member is basically melted or deformed after the temperature is 600 ℃; according to the invention, the hard alloy material is adopted as the metal sealing element, and the plane diamond grit is adopted for grinding the end face, so that the metal sealing element is smoother and smoother, the impact of an ultra-high temperature medium can be effectively blocked, and the sealing effect is good; the jet orifice of the electromagnetic valve adopts the design of a circular surrounding orifice, and the flame is uniformly jetted to the medium jet orifice, so that the jet thrust is very stable, and the orbital transfer attitude of the flyer is good; meanwhile, the gas at the tail part can be isolated by the sprayed high-temperature flame, and a gas backflow groove is designed at the periphery of the spraying hole, so that the flame and the gas are distributed and reflowed in a very consistent manner, and the flyer runs stably.

Furthermore, the magnetism isolating pipe assembly also comprises an upper magnetism isolating pipe fixed between the upper fixed iron core and the lower fixed iron core, and a lower magnetism isolating pipe is fixed on the lower side of the lower fixed iron core; the upper coil is arranged on the outer side of the upper magnetism isolating pipe, and the lower coil is arranged on the outer side of the lower magnetism isolating pipe.

(III) the beneficial effects.

Compared with the prior art, the ultrahigh-temperature high-pressure high-flow quick-reaction electromagnetic valve provided by the invention has the following advantages.

1) The double-coil superposition design is adopted, mutual interference among coil magnetic fields is avoided through the magnetism isolating piece and the magnetism isolating ring, the double-movable iron core design is adopted, the moving direction of the movable iron core is more definite, the maximum magnetic performance is exerted under the action of the double coils, and the opening force of the electromagnetic valve is increased by multiples.

2) The optimal attracting point of the magnetism isolating pipe assembly is matched with the optimal magnetism isolating design of the movable valve core assembly, so that the electromagnetic valve can exert the strongest magnetic performance, and the opening speed is greatly improved.

3) Due to the double-spring design, when the magnetic field disappears, the optimal suction position is also the spring placing position, and the closing speed is higher.

4) According to the thrust, the electromagnetic valve can be designed into double coils or multiple coils, good magnetic circuit distribution, reasonable magnetic energy design and the characteristic of quick switching, so that the electromagnetic valve can be applied to an aircraft to realize quick rail transfer; besides, the multiple coils can be started simultaneously, so that the opening force of the electromagnetic valve is greatly improved, the thrust after injection is greatly improved, the multiple coils can be independently controlled, when the orbital transfer needs to be fine-adjusted, only one or more coils need to be started, and when the large-angle orbital transfer needs to be realized or the orbital transfer needs to be avoided, the thrust after injection can be increased through the linkage of the multiple coils.

5) The mode that the traditional electromagnetic valve is only responsible for conveying fuel and then ignited and then ejected is broken through, the ignited flame is directly ejected in the cavity of the electromagnetic valve, a plurality of unnecessary links are reduced, and the ejection response time is greatly shortened; and the jet flow guide device is adopted, and the backflow groove is arranged to prevent the gas from being blocked to flow back and generate strong vibration due to expansion.

Drawings

Fig. 1 is a schematic structural diagram of an ultrahigh-temperature high-pressure high-flow quick response electromagnetic valve in a closed state.

Fig. 2 is a schematic structural diagram of the connection of the movable valve core assembly and the magnetism isolating pipe assembly of the rapid reaction electromagnetic valve with ultrahigh temperature, high pressure and large flow rate.

Fig. 3 is a schematic structural diagram of a movable valve core assembly of an ultrahigh-temperature high-pressure large-flow quick-response electromagnetic valve.

Fig. 4 is a schematic structural diagram of a magnetic isolation tube assembly of an ultrahigh-temperature high-pressure high-flow fast reaction electromagnetic valve.

Fig. 5 is a schematic structural diagram of the connection of the movable valve core assembly, the magnetism isolating pipe assembly and the coil assembly of the ultrahigh-temperature high-pressure large-flow quick response electromagnetic valve.

FIG. 6 is a schematic structural diagram of magnetic fields generated before and after two coils of the ultrahigh-temperature high-pressure high-flow fast reaction electromagnetic valve are electrified and a magnetism isolating piece is installed on the two coils.

FIG. 7 is a schematic structural diagram of the connection between the central tube and the valve body of the ultrahigh-temperature high-pressure high-flow fast reaction electromagnetic valve of the invention.

Fig. 8 is a schematic structural diagram of an injection flow guide device of an ultrahigh-temperature high-pressure high-flow quick-reaction electromagnetic valve.

Fig. 9 is a perspective view of an injection flow guide device of an ultrahigh-temperature high-pressure high-flow quick-response electromagnetic valve of the invention.

Fig. 10 is a schematic structural diagram of the jet flow guide device of the ultrahigh-temperature high-pressure high-flow quick-response electromagnetic valve in use.

Fig. 11 is a structural schematic diagram of the opening of the ultrahigh-temperature high-pressure high-flow quick reaction electromagnetic valve.

Fig. 12 is a schematic structural diagram of an ultrahigh-temperature high-pressure high-flow rapid reaction electromagnetic valve applied to an aircraft.

The corresponding part names for the various reference numbers in the figures are: 11. a central tube; 12. an upper movable iron core; 13. a lower movable iron core; 14. a magnetism isolating ring; 15. a thermal insulation layer; 21. an upper fixed iron core; 22. a lower fixed iron core; 23. an upper spring groove; 24. a lower spring groove; 25. an upper magnetism isolating pipe; 26. a lower magnetism isolating pipe; 31. an upper coil; 32. a lower coil; 33. a magnetic shield; 34. a first magnetic conductive plate; 35. a second magnetic conductive plate; 36. a third magnetic conductive plate; 4. an upper spring; 5. a lower spring; 6. a housing; 61. a medium ejection port; 7. a valve body; 71. a media inlet; 72. a heat sink; 73. a stepped heat dissipation structure; 731. high-temperature resistant ceramic plates; 732. a titanium alloy sealing sheet; 733. spraying a material at a high temperature; 8. a jet flow guide device; 81. a flow guide seat; 82. a metal seal; 83. an injection hole; 84. an arc-shaped reflux groove; 85. a high temperature spray; 86. high temperature gas.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Referring to fig. 1 to 12, the present invention provides an ultrahigh temperature, high pressure, large flow rate and fast reaction solenoid valve, which comprises a slidable movable valve core assembly, a magnetic isolation pipe assembly, a coil assembly, a housing 6 and a valve body 7.

Referring to fig. 2 and 3, the movable valve core assembly includes a slidable central tube 11, and an upper movable core 12 and a lower movable core 13 axially spaced apart from each other on an outer wall of the central tube 11, and a magnetism isolating ring 14 is installed between the upper movable core 12 and the lower movable core 13. The inner wall of the central tube 11 is sprayed with a heat insulation layer 15, and the thickness of the heat insulation layer 15 is 20 mm.

When the thickness of the heat insulation layer reaches 20mm, after high-temperature flame with the temperature of 1500 ℃ is introduced into the central tube, the surface temperature of the outer wall of the guide tube is measured by a sensor to be 60 ℃, the heat insulation effect is very ideal, and a solid foundation is laid for protecting the coil from being influenced by heat transfer. The magnetism isolating ring 14 plays an important role in distributing magnetic fields generated by the upper coil and the lower coil, although the upper movable iron core and the lower movable iron core are arranged on the same central pipe, the two movable iron cores can move towards the same direction, the moving direction of the electromagnetic valve is clearer, the suction force is larger, and the opening speed is faster.

Referring to fig. 2 and 4, the magnetism isolating pipe assembly is sleeved on the movable valve core assembly, the magnetism isolating pipe assembly includes an upper fixed iron core 21 disposed opposite to the upper movable iron core 12, a lower fixed iron core 22 disposed opposite to the lower movable iron core 13, and an upper magnetism isolating pipe 25 fixed between the upper fixed iron core 21 and the lower fixed iron core 22, and a lower magnetism isolating pipe 26 is fixed on the lower side of the lower fixed iron core 22.

One movable iron core of the conventional electromagnetic valve is only matched with one fixed iron core, and one fixed iron core only exerts the suction force which can be achieved by the single coil under the action of a magnetic field force; the invention is creatively designed into double fixed iron cores and double coils of the double fixed iron cores, the moving force of the movable valve core is multiplied, and the magnetic field force borne by the movable valve core assembly is also multiplied along with the increase of the number of the coils.

Referring to fig. 1, the coil assembly is installed outside the magnet-shielding tube assembly, the coil assembly includes an upper coil 31 corresponding to the upper movable core 12 and a lower coil 32 corresponding to the lower movable core 13, the upper coil 31 is installed outside the upper magnet-shielding tube 25, the lower coil 32 is installed outside the lower magnet-shielding tube 26, and a magnet-shielding member 33 is installed between the upper coil 31 and the lower coil 32. The coil assembly further comprises a first magnetic conduction plate 34 and a second magnetic conduction plate 35 which are arranged on two sides of the lower coil 32, a third magnetic conduction plate 36 is arranged at the lower end of the upper coil 31, and the first magnetic conduction plate 34 and the third magnetic conduction plate 36 are respectively located on two sides of the magnetic isolation piece 33.

In the traditional double-coil mode, the magnetic fields at the superposition position can be mutually crossed and interfered, and the attraction force is only reduced for a short time. The invention arranges magnetic material parts on both sides of the upper coil and magnetic material parts on both sides of the lower coil, aiming at enabling each coil to exert respective maximum magnetic performance, and at the same time creatively arranges a magnetism isolating part between the upper coil and the lower coil, and also arranges a magnetism isolating ring between two movable iron cores, when the double coils are electrified, the two magnetic fields can not mutually influence, and can exert respective maximum magnetic field suction force, and the opening pressure of the electromagnetic valve is higher. As is apparent from the left schematic diagram of fig. 6, when the double coils work, the magnetic fields are distributed, and when the magnetic fields of the double coils meet, the upper and lower magnetic fields affect each other, and the attraction force only decreases and does not increase. As can be seen from the right-side figure, when the magnetism isolating material with a certain thickness is placed between the two coils, the upper magnetic field and the lower magnetic field respectively form closed loops, are not influenced with each other, all exert respective strongest magnetic performance, and the comprehensive opening capability is greatly improved.

Referring to fig. 1 and 5, the height H1 of the upper fixed core 21 is 1/3 of the total height H1 of the outer convex portion of the upper fixed core 21, the upper coil 31 and the third magnetic conductive plate 36, and the height H2 of the lower fixed core 22 is 1/3 of the total height H2 of the first magnetic conductive plate 34, the lower coil 32 and the second magnetic conductive plate 35. The center of the upper movable core 12 is located at 1/3 of the total height H1 of the upper fixed core 21, the upper coil 31 and the third magnetic conductive plate 36, and the center of the lower movable core 13 is located at 1/3 of the total height H2 of the first magnetic conductive plate 34, the lower coil 32 and the second magnetic conductive plate 35.

The invention adopts the optimum position design for the upper and lower fixed iron cores and the upper and lower movable valve cores, so that the magnetism isolating pipe component has the optimum attraction surface, the magnetic field force is maximum at the position, and the opening speed can be effectively improved and the reaction is rapid by matching with the magnetism isolating design of the movable valve core component and the coil component.

Referring to fig. 2 and 4, an upper spring 4 is installed between the upper movable iron core 12 and the upper fixed iron core 21, the magnetism isolating ring 14 is fixed at the end of the upper movable iron core 12, the upper spring 4 makes the magnetism isolating ring 14 abut against the lower fixed iron core 22, and an upper spring groove 23 for installing the upper spring 4 is arranged on the upper fixed iron core 21; the lower spring 5 is installed between the lower movable iron core 13 and the lower fixed iron core 22, and the lower fixed iron core 22 is provided with a lower spring groove 24 for installing the lower spring 5.

The invention adopts the design of double springs, and spring grooves are respectively reserved at the upper fixed iron core and the lower fixed iron core, when the electromagnetic valve is powered off and the magnetic field disappears, the movable iron core and the fixed iron core can be quickly separated under the action of the double springs and are attracted with the sealing element. From the analysis of the attraction position, the optimal attraction position is also the spring placement position, the node is also the strongest position of the magnetic field after the electromagnetic valve is electrified, and when the electromagnetic valve is powered off, the double springs can enable the movable iron core to be quickly reset and closed quickly.

Referring to fig. 1, 8 and 9, the housing 6 is sleeved outside the coil assembly, and one end of the housing is provided with a horn-shaped medium injection port 61; the jet flow guiding device 8 is arranged on the housing 6 close to the medium jet orifice 61, the jet flow guiding device 8 comprises a flow guiding seat 81, a metal sealing element 82 corresponding to the central pipe 11 is arranged on the flow guiding seat 81, the metal sealing element 82 is made of hard alloy, a plurality of jet orifices 83 are annularly arranged on the outer side of the metal sealing element 82 at equal intervals, and the jet orifices 83 are obliquely arranged towards the outer side; a plurality of arc-shaped return grooves 84 are annularly and equally spaced outside the injection hole 83, and the arc-shaped return grooves 84 are arranged in the vertical direction.

The hard alloy material is adopted as the sealing material, and when a high-temperature medium directly contacts with the sealing element, the hard alloy material has the advantages of good rigidity, high strength and high-temperature impact resistance, and the material still keeps very good flatness at high temperature and high pressure. The process adopts a high-frequency laser surfacing mode, high-strength alloy materials are subjected to point surfacing on the flow guide seat 81, then a sealing surface is processed for multiple times in a coarse and fine grinding combined mode, and finally a grinding mode is adopted to achieve the best sealing effect.

Referring to fig. 10, after the electromagnetic valve is opened, the high-temperature medium is instantly sprayed out of the spray guiding device, and the heat of the high-temperature flame causes the surrounding gas to form a vortex, so that the surrounding gas is heated and expanded, and the medium spray opening is strongly vibrated at the moment; the jet flow guiding device adopts a plurality of jet holes which are uniformly distributed along the circumferential direction, so that the thrust of the medium jet hole is uniform, and simultaneously, gas generated around the jet holes flows back from the arc-shaped reflux groove along the same trend, so that the jet at the medium jet hole is very stable.

Referring to fig. 1 and 7, the valve body 7 is fixed to the other end of the housing 6, and a medium inlet 71 is provided therein, and one end of the center pipe 11 is disposed in the valve body 7 and communicates with the medium inlet 71. A heat dissipation groove 72 is formed in the inner wall of the valve body 7, and stepped heat dissipation structures 73 are arranged on two sides of the heat dissipation groove 72; the stepped heat dissipation structure 73 comprises a high-temperature resistant ceramic piece 731, a titanium alloy sealing piece 732 and a high-temperature spraying material 733 which are sequentially connected, and the outer wall of the central tube 11 is in sliding contact with the high-temperature resistant ceramic piece 731.

The medium inlet can be directly contacted with the central pipe, and high temperature is transferred at the moment; the invention adopts a stepped heat dissipation design, thereby ensuring that the central tube moves smoothly in the cavity and ensuring good sealing and heat isolation.

Referring to fig. 10, when in use, the medium inlet is directly communicated with the combustion chamber, the outlet of the combustion chamber is provided with a non-return heat insulation baffle, when the electromagnetic valve needs to participate in orbital transfer work, the combustion chamber stops returning the heat insulation baffle to be opened, and high-temperature flame in combustion directly enters the central pipe of the electromagnetic valve; when the track-changing instruction is given to the electromagnetic valve, all the electromagnetic coils are simultaneously electrified to generate multiple magnetic fields, the movable iron core and the corresponding fixed iron core are quickly attracted under the action of the strong magnetic field, the end part of the central tube rapidly moves and is separated from the metal sealing element, flame is directly sprayed out from the medium spray opening, and the electromagnetic valve is in an open state. When an instruction of completing the rail transfer is received, all coils are powered off at the same time, the magnetic field force disappears, the movable iron core is rapidly separated from the corresponding fixed iron core under the action of the corresponding spring, one end of the central pipe is in contact with the metal sealing element, the medium is blocked, and the electromagnetic valve is in a closed state.

Referring to fig. 11, the flame of the present invention is originally created as a medium of the electromagnetic valve, i.e. the electromagnetic valve directly controls whether the flame is sprayed out; the design of the electromagnetic valve has very high requirements, the electromagnetic valve does not need excessive links, only the electromagnetic valve is needed to be suitable for high-temperature combustion media such as flame and the like, and the electromagnetic valve can respond quickly. In application, as long as a plurality of electromagnetic valves are arranged around the flying object, when the posture needs to be changed, the corresponding electromagnetic valves are instantly opened to meet the requirement of posture adjustment. The switching process only needs switching time less than or equal to 5ms, and for the large-caliber high-pressure electromagnetic valve, the response is very quick, the injection effect is good, the speed is high, and the injection force is large.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the technical principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a large-traffic quick reaction solenoid valve of superhigh temperature high pressure which characterized in that includes:

the movable valve core assembly comprises a slidable central pipe (11), an upper movable iron core (12) and a lower movable iron core (13) which are axially arranged on the outer wall of the central pipe (11) at intervals, and a magnetism isolating ring (14) is arranged between the upper movable iron core (12) and the lower movable iron core (13);

the magnetism isolating pipe assembly is sleeved on the movable valve core assembly in an outer mode and comprises an upper fixed iron core (21) and a lower fixed iron core (22), wherein the upper fixed iron core (21) is arranged opposite to the upper movable iron core (12), and the lower fixed iron core (22) is arranged opposite to the lower movable iron core (13);

the coil assembly is arranged on the outer side of the magnetism isolating pipe assembly and comprises an upper coil (31) corresponding to the upper movable iron core (12) and a lower coil (32) corresponding to the lower movable iron core (13), and a magnetism isolating piece (33) is arranged between the upper coil (31) and the lower coil (32); the coil assembly further comprises a first magnetic conduction plate (34) and a second magnetic conduction plate (35) which are arranged on two sides of the lower coil (32), a third magnetic conduction plate (36) is arranged at the lower end of the upper coil (31), and the first magnetic conduction plate (34) and the third magnetic conduction plate (36) are respectively located on two sides of the magnetic isolation piece (33);

the height of the upper fixed iron core (21) is 1/3 of the total height of the outer convex part of the upper fixed iron core (21), the upper coil (31) and the third magnetic conduction plate (36), and the height of the lower fixed iron core (22) is 1/3 of the total height of the first magnetic conduction plate (34), the lower coil (32) and the second magnetic conduction plate (35); the center of going up movable core (12) is located go up fixed core (21) evagination go up coil (31) and third magnetic conduction board (36) total height 1/3 department, the center of lower movable core (13) is located first magnetic conduction board (34), lower coil (32) and second magnetic conduction board (35) total height 1/3 department.

2. The electromagnetic valve for ultrahigh temperature, high pressure, large flow rate and rapid reaction of claim 1 is characterized in that: an upper spring (4) is arranged between the upper movable iron core (12) and the upper fixed iron core (21), the magnetism isolating ring (14) is fixed at the end part of the upper movable iron core (12), the upper spring (4) enables the magnetism isolating ring (14) to abut against the lower fixed iron core (22), and an upper spring groove (23) for installing the upper spring (4) is formed in the upper fixed iron core (21); lower spring (5) is installed between lower movable iron core (13) and lower fixed iron core (22), be provided with on lower fixed iron core (22) and be used for the installation lower spring groove (24) of spring (5) down.

3. The electromagnetic valve for rapid reaction with superhigh temperature, high pressure and large flow rate according to claim 1, further comprising:

the housing (6) is sleeved outside the coil assembly, and one end of the housing is provided with a horn-shaped medium jet orifice (61);

the valve body (7) is fixed to the other end of the housing (6), a medium inlet (71) is formed in the valve body, and one end of the central pipe (11) is arranged in the valve body (7) and communicated with the medium inlet (71).

4. The electromagnetic valve for ultrahigh temperature, high pressure, large flow rate and rapid reaction of claim 3 is characterized in that: the inner wall of the valve body (7) is provided with a heat dissipation groove (72), and both sides of the heat dissipation groove (72) are provided with stepped heat dissipation structures (73); the ladder heat radiation structure (73) comprises a high-temperature-resistant ceramic piece (731), a titanium alloy sealing piece (732) and a high-temperature spraying material (733) which are sequentially connected, and the outer wall of the central tube (11) is in sliding contact with the high-temperature-resistant ceramic piece (731).

5. The electromagnetic valve for ultrahigh temperature, high pressure, large flow rate and rapid reaction of claim 3 is characterized in that: the jet flow guiding device (8) is arranged on the housing (6) close to the medium jet opening (61), the jet flow guiding device (8) comprises a flow guiding seat (81), a metal sealing piece (82) corresponding to the central pipe (11) is arranged on the flow guiding seat (81), a plurality of jet holes (83) are annularly arranged on the outer side of the metal sealing piece (82) at equal intervals, and the jet holes (83) are obliquely arranged towards the outer side; the outer side of the injection hole (83) is annularly provided with a plurality of arc-shaped backflow grooves (84) at equal intervals, and the arc-shaped backflow grooves (84) are arranged in the vertical direction.

6. The electromagnetic valve for ultrahigh temperature, high pressure, large flow rate and rapid reaction of claim 1 is characterized in that: the magnetism isolating pipe assembly further comprises an upper magnetism isolating pipe (25) fixed between the upper fixed iron core (21) and the lower fixed iron core (22), and a lower magnetism isolating pipe (26) is fixed on the lower side of the lower fixed iron core (22); the upper coil (31) is arranged on the outer side of the upper magnetism isolating pipe (25), and the lower coil (32) is arranged on the outer side of the lower magnetism isolating pipe (26).

7. The electromagnetic valve for ultrahigh temperature, high pressure, large flow rate and rapid reaction of claim 1 is characterized in that: the inner wall of the central pipe (11) is sprayed with a heat insulation layer (15), and the thickness of the heat insulation layer (15) is 20 mm.