CN105840904A - High-speed repetitive pulse type radial flow trace gas supply valve - Google Patents
High-speed repetitive pulse type radial flow trace gas supply valve Download PDFInfo
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- CN105840904A CN105840904A CN201610413918.8A CN201610413918A CN105840904A CN 105840904 A CN105840904 A CN 105840904A CN 201610413918 A CN201610413918 A CN 201610413918A CN 105840904 A CN105840904 A CN 105840904A
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- reed
- valve body
- pulse
- switch assembly
- gas supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
Abstract
The invention discloses a high-speed repetitive pulse type radial flow trace gas supply valve which comprises a valve body, a driving part and an executing component. The driving part and the executing component are arranged on the valve body and used for controlling switching of the work states of a radial valve opening. The driving part comprises an induction driving coil and a pulse driving circuit, the induction driving coil is located on the valve opening and arranged opposite to a reed. The executing component is the reed in a flat truncated conical shell shape. The inner edge of the reed is fixed, and the outside of the reed can be deformed in the axial direction. Due to the fact that the mass of the reed is small, the valve can be fast opened under the action of the repelling force of induction vortex. Compared with a common flat plate type structure, when identical deformation is generated on the outer edge, elastic potential energy stored by the truncated-conical-shell-shaped structure of the reed is larger, and therefore quick closing can be achieved. The induction driving coil is designed to be of a flat truncated conical spiral structure and arranged opposite to the reed, and therefore the electromagnetic force density in the reed can be effectively improved. By means of the combination manner of the driving part and the executing component, the overall structural size and mass of the valve body are greatly reduced, and miniaturization and weight reduction of the structure are facilitated.
Description
Technical field
The present invention relates to space exploration electric thruster field, especially, relate to a kind of high speed repetition pulse formula Radial Flow trace gas
Body supply valve.
Background technology
Along with the mankind explore and utilize the scope of space to expand, transport the task interplanetary deep space as representative with manned/unmanned Mars and visit
Survey task, proposes the new demands such as more long-life, more power, more high thrust, specific impulse and efficiency is variable to electric thruster.With
Pulse induction formula thruster (Pulsed Inductive Thruster, PIT) is that the pulsed electromagnetism of representative accelerates thruster towards not
Showing unique advantage in the interplanetary survey of deep space task analysis come, the ultimate principle of PIT is by electrical power storage in electric capacity, electricity
Hold and produce, by coil discharge, the pulse current that peak value is the biggest, pulse current the electromagnetic fiele produced makes to be in coil surface
Gas working medium ionization also produces faradic current in the plasma, and faradic current interacts with coil current and makes gas high velocity spray
Penetrate, thus produce thrust.From PIT operation principle, gas working medium, in induction coil distribution of surface, affects the line of induction
Circle electric discharge timing, propellant degree of ionization and accelerator, be thruster thrust efficiency, specific impulse and propellant utilization ratio
Important factor in order.Pulsed gas working substance supply valve is one of core component of pulse induction thruster, and its performance directly concerns
Thruster performance.In terms of the ionization of pulse induction thruster gas working medium with accelerator, it is desirable to by supply valve effluent air pulse
Forming close sense and answer the uniform gas layer of coil surface, this gas blanket to reach certain density simultaneously；From improving working medium utilization rate
Angle, gas pulses is sufficiently small, when gas pulses tailing edge arrive in induction coil along time, gas pulses forward position can not be overflowed and be added
The outer of speed coil；When PIT repetition pulse works, between former and later two gas pulses, can not there is any pulling.
In sum, in conjunction with the particularity of space applied environment, the requirement for pulse gas supply valve is embodied in following several
Aspect: (1) can pulse operation, produce suitable gas pulsewidth.(2) dynamic response characteristic being exceedingly fast, when extremely short
In complete opening and closing because the persistent period of coil discharge and gas accelerating jetting process is not more than 20 microseconds, thruster senior engineer
Working frequency is up to hertz up to ten thousand.(3) simple in construction, reliable operation, stable performance and life-span are long, because the application background of this valve
For interplanetary survey of deep space task.
At present, the moving-coil structure that pulse valve is fixed magnetic field formula used in PIT ground experiment, tubular moving winding is placed in by encouraging
In the ring-type working gas gap with the strongest radial direction magnetic induction (about 1T) that magnetic coil/permanent magnet and yoke are formed.Work as moving-coil
When being passed through electric current, interact with fixed magnetic field and produce electromagnetic force, realize the opening and closing of valve by changing the sense of current in moving-coil.By
Big in required magnetic field intensity, magnet exciting coil heating is serious, and moving coil framework is connected the installation question of ring not yet with seal membrane simultaneously
Solved well.
The key technology of high-speed pulse air supply valve is that type of drive selects and Motor execution component designs.High-speed pulse at present
The type of drive of valve mainly has electromagnetic type, piezoelectric type and ultra-magnetic telescopic formula, and each type of drive adapts to different job requirements.
Owing to piezoelectric and giant magnetostrictive material deformation quantity are less, need bigger material when exporting relatively large displacement
Body or employing enlarger, piezoelectric is temperature sensitive simultaneously, and giant magnetostrictive material is non-linear seriously, and being not suitable with should
With.At present, flow relatively large, opening/closing time all use electricity in the gas pulses valve type of drive of tens, hundred musec order
Magnetic induction eddy current dynamical type mechanism, its operation principle is that the pulse current being passed through induction coil produces transient magnetic field in space, place
Producing faradic current in non-ferromagnetic metal conductor in magnetic field, the magnetic field interaction that faradic current produces with coil produces Lip river
Lun Zili, this type of drive action is exceedingly fast, and structure is relatively easy.According to valve work process with in order to produce the spy of turbulating elements
Point, the typical structure of the high speed pulse valve that electromagnetic induction eddy current activates can be summarized as tray type structure, slip impacting type structure and diaphragm
Formula structure, specific as follows:
1) metal disc structure
It is the high conductivity metal dish with certain mechanical strength that this kind of structure is used for producing the parts of inductive loop, generally aluminum or
Copper.When induction coil is passed through pulse current, metal dish overcomes pretightning force band movable sealing to make valve port open, it is achieved gas communication,
Along with weakening of driving pulse, when driving force is not enough to overcome restoring force, valve port starts Guan Bi, blocks circulation, in this process
Middle metal dish does not produce elastic deformation.The restoring force of closing of this type valve is mainly by the helical spring elastic force compressed or gas pressure
There is provided.
The topmost shortcoming of tray type structure is: in order to realize sealing, the quality of its movable member is bigger than normal, directly affects it the most special
Property, also it is unfavorable for forming fixing or adjustable pulse gas width；Additionally, the asymmetry of helical spring is imparted on metal dish
On elastic force uneven, sealing effectiveness and the sealing life of valve can be had a strong impact on when carrying out a large amount of repeated work；Back pressure disc type is tied
Although the restoring force even action that structure provides, but need extra high-pressure sealing chamber in structure design, make structure bigger than normal, simultaneously
There is sliding friction, be unfavorable for that space is applied.
2) slip impacting type
The parts producing inductive loop are metal ring, and after applying excitation, metal ring induces eddy current, warp in pulsed magnetic field
After acceleration with seal structure member generation elastic collision, seal structure and obtain the sealing force overcoming pressure reduction to be formed from the kinetic energy of annulus
Valve port is made to open, it is achieved gas circulates；The pressure that the restoring force of this kind of structure is typically formed by sealing member both sides pressure reduction provides.
The shortcoming of slip impacting type structure valve is: under pulse operation state repeatedly, uses the mode of elastic collision can cause hitting
Hammer and sealing member damage inactivation, do not possess long-life potential quality；Installation direction be there are certain requirements by the valve using this type of drive,
During work, metal ring should be close to induction coil, otherwise affects the acceleration effect of becket, affects dynamic characteristic, if being in space
Among environment, it is difficult to ensure that drive coil is close to by hammer during work.
3) planar metal chip structure
Being elastic linear plectane sheet metal in order to produce the parts of eddy current, this sheet metal is also used for realizing sealing valve port simultaneously.Sensing
After coil is passed through pulse excitation, sheet metal can produce elastic deformation under the effect of electromagnetic repulsion force and open sealing, it is achieved valve port is opened.
When suffered electromagnetic repulsion force reduces or disappears, the elastic potential energy stored by sheet metal promotes diaphragm to recover original form, cuts off
Fluid flows, and completes the closed action of valve.
The flow of planar metal chip structure is determined in the unlatching displacement of outer rim by outer rim girth and the diaphragm of air collecting chamber, relative discharge
Time bigger, the outer of sheet metal need open larger displacement, due to diaphragm store elastic potential energy limited, its Guan Bi time dynamic
Characteristic is undesirable.
For the deficiency of the gas working medium pulse supply valve used in the most external pulse induction thruster experiment, and existing height
Speed pulse gas valve exists that structure is complicated, dynamic response is low, physical dimension and quality is bigger than normal, can not continuous-stable pulsed operation etc.
Technical problem, needs a kind of new gas supply valve meeting pulse induction formula thruster gas demand and supply of design badly.
Summary of the invention
The invention provides a kind of high speed repetition pulse formula Radial Flow minimum gas supply valve to solve existing vicarious pulse etc.
The deficiency of propellant pulse supply valve in gas ions thruster, and existing high-speed pulse gas trap to there is structure complicated, dynamically
Respond low, physical dimension and quality is bigger than normal, can not the technical problem of continuous-stable pulsed operation.
The technical solution used in the present invention is as follows:
A kind of high speed repetition pulse formula Radial Flow minimum gas supply valve, including valve body, is located on valve body for controlling it radially
The drive division of valve port duty conversion and execution component, drive division includes that the sensing being positioned at valve port and reed is arranged relatively drives
Coil and the pulse driving circuit being connected with drive coil, drive coil is flat frustum-like shape helical structure；Perform structure
Part is reed, and reed is flat truncated cone shelly and is positioned on drive coil, and the interior edge of reed is fixed, and its outer can be along axle
To deformation to realize the on-off action of valve port through electromagnetic induction, it is provided with between reed and drive coil and the phase separation of reed outer
The closely diaphragm seal of reed kinetic energy when valve port and absorption Guan Bi.
Further, valve body include main valve body, be located at main valve body upper end and for spacing and upper valve body as nozzle mounting interface,
It is located at main valve body lower end for connecting the bonnet of supply air line；
Pressure stabilizing cavity is formed between bonnet and main valve body；
The upper surface of main valve body is offered coil mounting groove, drive coil and diaphragm seal and is sequentially arranged in coil mounting groove, reed
Interior be sheathed on upper valve body to limit in it vertically along matched in clearance and radially degree of freedom, fit with diaphragm seal in the outer of reed
Form sealing valve port；
Forming air collecting chamber between upper valve body, reed and main valve body, air collecting chamber connects with pressure stabilizing cavity.
Further, the bottom of coil mounting groove is provided with the radial groove for suppressing eddy-current loss.
Further, drive coil uses high-temperature-resistant epoxy resin to be poured in coil mounting groove, and diaphragm seal is arranged on sense
Should drive on coil.
Further, drive coil connects the pulse driving circuit carrying out pulse sequence control through electrode.
Further, pulse driving circuit includes: timing control unit, constant-current charge unit, solid-state switch assembly, pulse merit
Rate switch module, wave regulating resistor, harmonic inductance, storage capacitor, commutation diode；
The positive pole of constant-current charge unit drives line through solid-state switch assembly, pulse power switch assembly, wave regulating resistor, sensing successively
Circle, the negative pole of harmonic inductance connection constant-current charge unit；Solid-state switch assembly and the junction of pulse power switch assembly, constant current
Storage capacitor is accessed between the negative pole of charhing unit；The negative pole of constant-current charge unit, pulse power switch assembly and wave regulating resistor
Commutation diode is accessed between junction；
The control end of solid-state switch assembly and pulse power switch assembly is all connected with timing control unit to be driven by timing control unit
Control.
Further, timing control unit includes three control signal wires, and wherein, the first control signal wire connects solid-state switch group
Part, the second control signal wire connects pulse power switch assembly, and the 3rd control signal wire accesses thruster discharge switch assembly.
Further, drive coil uses resistant to elevated temperatures multiply enamel-covered wire to be entwined.
Further, reed uses high conductivity beallon punch forming and forms through Ageing Treatment.
The method have the advantages that
High speed repetition pulse formula Radial Flow minimum gas supply valve of the present invention, uses eddy current repulsion principle to drive, and performs component and adopts
With the flat truncated cone shelly reed that interior edge is fixing, owing to the quality of flat truncated cone shelly reed is little, its sensing arranged relatively drives
Coil uses flat frustum-like shape helical structure, this construction reduces the distance between reed and drive coil, makees at electromagnetic repulsion force
With the lower quick unlatching realizing valve；Its cone structure, compared with common plane formula structure, stores up when producing identical deformation in outer
Standby elastic potential energy is bigger, therefore can realize quick-make response characteristic requirement；Drive coil is not required to excitation structure simultaneously,
Restoring force required during valve port Guan Bi is provided by the deformation elastic potential energy of reed, is not required to extra structure and provides restoring force, can be effective
Reduce the physical dimension of valve and gross mass, and compact overall structure, save launch cost；Radially outlet mode decreases pulse
Because flowing to the energy loss that change brings in gas flow；Reed material is that in elastomeric material, and work process, deformation quantity is little,
Without potential impact factors of limit life such as sliding friction pairs in structure, simple and reliable for structure, it is possible to meet stability and long-life
Requirement.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.Below
With reference to the accompanying drawings, the present invention is further detailed explanation.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, the illustrative examples of the present invention and
Its explanation is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of preferred embodiment of the present invention high speed repetition pulse formula Radial Flow minimum gas supply valve；
Fig. 2 is the structural representation of preferred embodiment of the present invention pulse driving circuit.
Description of reference numerals:
1, upper valve body；2, screw；3, alignment pin；
4, an O RunddichtringO；5, the 2nd O RunddichtringO；6, diaphragm seal；
7, the 3rd O RunddichtringO；8, electrode；9, gas access；
10, pressure stabilizing cavity；11, bonnet；12, main valve body；
13, air collecting chamber；14, drive coil；15, reed；
16, harmonic inductance；17, commutation diode；
18, storage capacitor；19, constant-current charge unit；
20, solid-state switch assembly；21, timing control unit；
22, pulse power switch assembly；23, wave regulating resistor.
Detailed description of the invention
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.
Describe the present invention below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
With reference to Fig. 1, the present embodiment provides a kind of high speed repetition pulse formula Radial Flow minimum gas supply valve, including valve body, is located at
For controlling the drive division of radial valve port duty conversion and performing component on valve body, the present embodiment drive division includes being positioned at valve port
Place and the drive coil 14 being oppositely arranged and outside pulse driving circuit, performing component is flat truncated cone shelly reed 15
And it is positioned on drive coil 14, it is provided with tight with reed 15 outer phase separation between reed 15 and drive coil 14
The diaphragm seal 6 of reed kinetic energy when close valve port and absorption Guan Bi.Drive coil 14 is flat frustum-like shape helical structure, reed 15
Interior edge fix, its outer can axially deform to realize the on-off action of valve port through electromagnetic induction.In the present embodiment, flat section
Conical shell shape refers to overall the most flat and that cross section is tapered structure, and wherein, flat truncated cone shelly reed is similar to disk spring.
The present embodiment high speed repetition pulse formula Radial Flow minimum gas supply valve utilizes electromagnetic induction eddy current repulsion principle and reed to become
The elastic potential energy of shape deposit realizes the fast transition of valve duty, in the present embodiment, performs component and uses flat truncated cone shelly spring
Sheet, reed quality is little, and drive coil uses flat frustum-like shape helical structure, decreases between reed and drive coil
Distance, therefore can realize quickly opening；Owing to reed is flat truncated cone shelly, along fixing in it, with ordinary flat formula spring
Chip architecture is compared, and when producing identical deformation in outer, the elastic potential energy of deposit is bigger, it is possible to meets quick-make response characteristic and wants
Ask；Drive coil is not required to excitation structure simultaneously, and restoring force required during valve port Guan Bi is provided by the deformation elastic potential energy of reed,
It is not required to extra structure and restoring force is provided, can effectively reduce physical dimension and the gross mass of valve, and compact overall structure, save
Launch cost；Additionally, reed material is that in elastomeric material, and work process, deformation quantity is little, without sliding friction pair etc. in structure
Potential impact factors of limit life, simple and reliable for structure, it is possible to meet stability and long life requirement.
With reference to Fig. 1, the present embodiment valve body includes main valve body 12, is located at main valve body 12 upper end and installs mouth for spacing and conduct spray
The upper valve body 1 of interface, it is located at main valve body 12 lower end for connecting the bonnet 11 of supply air line, between bonnet 11 and main valve body 12
Form pressure stabilizing cavity 10；The upper surface of main valve body 12 is offered coil mounting groove, drive coil 14 and diaphragm seal 6 and is sequentially arranged in
In coil mounting groove, the interior of reed 15 is sheathed on upper valve body 1 to limit its axially and radially degree of freedom, reed along matched in clearance
The outer of 15 forms sealing valve port with diaphragm seal 6 laminating；Air collecting chamber 13 is formed between upper valve body 1, reed 15 and main valve body 12,
Air collecting chamber 13 connects with pressure stabilizing cavity 10.Preferably, valve body all uses the nonferromugnetic material of high resistivity to make (the present embodiment
Preferably employ 20Mn23AlV), it is effectively reduced the eddy-current loss of valve body.Preferably, the bottom of coil mounting groove is provided with for pressing down
The radial groove of eddy-current loss processed.
In the present embodiment, drive coil 14 uses high-temperature-resistant epoxy resin to be poured in coil mounting groove, and diaphragm seal 6 is pacified
It is contained on drive coil 14.Wherein, the material of diaphragm seal 6 is silicone rubber, and its gas efficiency in vacuum environment is low.
In the present embodiment, with reference to Fig. 1, upper valve body 1 is connected with main valve body 12, by an O by screw 2, alignment pin 3
RunddichtringO 4 realizes sealing, and reed 15 compresses diaphragm seal 6 and the 2nd O RunddichtringO 5, it is achieved valve port and reed 15 are with upper
Seal between valve body 1.Preferably, drive coil 14 is connected with electrode 8, and electrode 8 is connected with pulse driving circuit, arteries and veins
Rushing drive circuit provides pulse voltage to drive reed 15 for drive coil 14.Preferably, bonnet 11 is adopted with main valve body 12
Connect (figure does not marks) with screw and realize sealing by the 3rd O RunddichtringO 7.External high pressure gas is accessed in gas access 9
Body source.
Preferably, drive coil 14 uses resistant to elevated temperatures multiply enamel-covered wire to be entwined, and is effectively reduced the eddy current effect of coil
Should.
Preferably, reed 15 uses high conductivity beallon punch forming and forms through Ageing Treatment, and its conductivity can effectively carry
High.Under identical excitation parameters, high conductivity ensure that and produces bigger faradic current in reed, advantageously forms more
Big driving force improves dynamic characteristic.
Preferably, air collecting chamber 13 and pressure stabilizing cavity 10 in main valve body 12 are connected by four passages, and pressure stabilizing cavity 10 is operationally
The Working medium gas in air collecting chamber 13 can be supplemented timely, it is ensured that discharge characteristic.
With reference to Fig. 2, the present embodiment pulse driving circuit includes: timing control unit 21, constant-current charge unit 19, solid-state switch
Assembly 20, pulse power switch assembly 22, wave regulating resistor 23, harmonic inductance 16, storage capacitor 18, commutation diode 17；
Wherein, the positive pole of constant-current charge unit 19 successively through solid-state switch assembly 20, pulse power switch assembly 22, wave regulating resistor 23,
Drive coil 14, harmonic inductance 16 connect the negative pole of constant-current charge unit 19；The minus earth of constant-current charge unit 19.
Solid-state switch assembly 20 and the junction of pulse power switch assembly 22, constant-current charge unit 19 negative pole between access energy storage electricity
Hold 18；Rectification is accessed between the negative pole of constant-current charge unit 19, pulse power switch assembly 22 and the junction of wave regulating resistor 23
Diode 17；The control end of solid-state switch assembly 20 and pulse power switch assembly 22 be all connected with timing control unit 21 with by time
Sequence control unit 21 drives and controls.In the present embodiment, timing control unit 21 includes three control signal wires, wherein, first
Control signal wire connects solid-state switch assembly 20, and the second control signal wire connects pulse power switch assembly 22, the 3rd control signal
Line accesses thruster discharge switch assembly, and solid-state switch assembly 20 and pulse power switch assembly 22 are in normally open.
The present embodiment regulates the big I of the discharge voltage of storage capacitor 18 in drive circuit by timing control unit 21 and realizes flow and list
Individual gas pulse-width regulated；During continuous impulse work, timing control unit 21 is opened by regulation solid-state switch assembly 20, pulse power
Pass assembly 22 triggers the dutycycle of signal can realize the regulation of gas pulses frequency.
The present embodiment high speed repetition pulse formula Radial Flow minimum gas supply valve specific implementation process is as follows:
With reference to Fig. 1 and 2, gas access 9 is connected high-pressure air source, pressure stabilizing cavity 10 and air collecting chamber 13 and is full of the working medium gas of certain pressure
Body；Set the sequential logic of timing control unit 21 3 supported signal, solid-state switch assembly under the control of timing control unit 21
20 conductings, storage capacitor 18 is charged by constant-current charge unit 19, and when reaching set voltage, solid-state switch assembly 20 is cut
Disconnected, pulse power switch assembly 22 turns on, and storage capacitor 18 discharges, and forms pulse current, arteries and veins in drive coil 14
Rush electric current and produce transient electromagnetic field, make reed 15 produce the faradic current contrary with the direction of the winding current, faradic current and space magnetic
Field interactions, produces distribution electromagnetic force in reed 15, forms the initial stage of pulse current, spring in drive coil 14
Electromagnetic force comprehensive function in sheet 15 is not sufficiently effective to overcome the initial pretightning force of reed 15, and valve port is still within closure state；
Along with in drive coil 14, pulse current increases and the increase of inductive loop, enough gram of the comprehensive moment that distribution electromagnetic force is formed
Take initial pretightning force in reed 15, and make reed 15 produce axial accelerated motion, destroy the sealing of reed 15 and diaphragm seal 6,
Gases at high pressure in air collecting chamber 13 are ejection at a high speed under the driving of valve port inside and outside differential pressure, it is achieved the conducting of valve；When reed 15 outer
Resilience can occur, owing to electromagnetic force comprehensive function result now is still above reed elastic force, at electromagnetism when contacting with upper valve body 1
Again being adjacent to upper valve body under the effect of power, it is achieved the holding that valve is opened, the elastic potential energy that now reed 15 stores is maximum.Along with sense
The decay of inductive loop in pulse current and reed 15 in coil 14 should be driven, when electromagnetic force comprehensive function is not sufficiently effective to overcome
During the elastic force of reed 15, reed 15 overcomes electromagnetic force to accelerate to initial position to move, when flowing through pulse power switch assembly 22
When electric current just occurs zero passage, pulse power switch assembly 22 disconnects, and the electric current in loop drives with sensing at commutation diode 17
The loop that coil 14 is constituted enters freewheeling period, prevents storage capacitor 18 reverse charging.Meanwhile reed 15 returns to
Initial position and diaphragm seal 6 re-establish sealing valve port, it is achieved the Guan Bi of valve.After valve closes, timing control unit 21 is to pushing away
Discharge switch in the pulse driving circuit of power device sends signal, it is achieved the ignition trigger of thruster.
Can learn from above description, the high speed repetition pulse formula Radial Flow minimum gas supply valve in the present embodiment utilizes electromagnetism
The elastic potential energy of inductive loop repulsion principle and reed deformation deposit realizes the fast transition of valve duty；In order to produce whirlpool in valve
Stream metal spring leaf be flat truncated cone shelly, reed quality is little, drive coil use flat frustum-like shape helical structure structure and
Reed relatively is arranged, and decreases the distance between reed and drive coil, therefore can realize quickly opening；Due to reed in
Flat truncated cone shelly, along fixing in it, compared with ordinary flat formula reed structure, deposit when producing identical deformation in outer
Elastic potential energy is bigger, it is possible to meet quick-make response characteristic requirement；Annular radial valve port, can reduce pulse to the full extent
Gas energy loss in nozzle；Need not extra restoring force device in valve arrangement, restoring force is laid in by reed self-deformation
Elastic potential energy provide, therefore simple in construction, it is easy to processing and manufacturing；In work process, deformation quantity is little, and there is not slip and rub
The easily mechanism of generation time problem in space environment such as wiping, improves the reliability of valve；Flat truncated cone shelly reed is with flat
Frustum-like shape helical coil structure form and set-up mode make compact overall structure, it is easy to the miniaturization of structure, lightweight；By adjusting
In joint pulse driving circuit capacitance voltage and pulse power switch trigger the dutycycle of signal can realize gas pulses Flow-rate adjustment and
Frequency regulates, it is possible to realize the regulation of thruster propulsive performance, meets different operating mode mission requirements.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a high speed repetition pulse formula Radial Flow minimum gas supply valve, including valve body, is located on valve body for controlling it radially
The drive division of valve port duty conversion and execution component, it is characterised in that
Described drive division includes being positioned at valve port and reed (15) is arranged relatively drive coil (14) and with described
The pulse driving circuit that drive coil (14) is connected, described drive coil (14) is flat frustum-like shape spiral
Structure；
Described execution component is reed (15), and described reed (15) is flat truncated cone shelly and is positioned at described sensing driving line
On circle (14), the interior edge of described reed (15) is fixed, and its outer can axially deform to realize institute through electromagnetic induction
State the on-off action of radial valve port, be provided with and described spring between described reed (15) and described drive coil (14)
The diaphragm seal (6) of described reed (15) kinetic energy when the tight described valve port of sheet (15) outer phase separation and absorption Guan Bi.
High speed repetition pulse formula Radial Flow minimum gas supply valve the most according to claim 1, it is characterised in that
Described valve body includes main valve body (12), is located at described main valve body (12) upper end and is used for spacing and installs as nozzle
The upper valve body (1) of interface, it is located at described main valve body (12) lower end for connecting the bonnet (11) of supply air line；
Pressure stabilizing cavity (10) is formed between described bonnet (11) and described main valve body (12)；
Coil mounting groove, described drive coil (14) and described sealing are offered in the upper surface of described main valve body (12)
Sheet (6) is sequentially arranged in described coil mounting groove, and the interior of described reed (15) is sheathed on described upper valve body along matched in clearance
(1) to limit in it vertically and radially degree of freedom on, the outer of described reed (15) is pasted with described diaphragm seal (6)
Close and form sealing valve port；
Air collecting chamber (13), described collection is formed between described upper valve body (1), described reed (15) and described main valve body (12)
Air cavity (13) connects with described pressure stabilizing cavity (10).
High speed repetition pulse formula Radial Flow minimum gas supply valve the most according to claim 2, it is characterised in that
The bottom of described coil mounting groove is provided with the radial groove for suppressing eddy-current loss.
High speed repetition pulse formula Radial Flow minimum gas supply valve the most according to claim 3, it is characterised in that
Described drive coil (14) uses high-temperature-resistant epoxy resin to be poured in described coil mounting groove, and described close
Mounting (6) is arranged on described drive coil (14).
High speed repetition pulse formula Radial Flow minimum gas supply valve the most according to claim 1, it is characterised in that
Described drive coil (14) connects the pulse driving circuit carrying out pulse sequence control through electrode (8).
High speed repetition pulse formula Radial Flow minimum gas supply valve the most according to claim 5, it is characterised in that
Described pulse driving circuit includes: timing control unit (21), constant-current charge unit (19), solid-state switch assembly
(20), pulse power switch assembly (22), wave regulating resistor (23), harmonic inductance (16), storage capacitor (18), whole
Stream diode (17)；
The positive pole of described constant-current charge unit (19) is successively through described solid-state switch assembly (20), described pulse power switch
Assembly (22), described wave regulating resistor (23), described drive coil (14), described harmonic inductance (16) connect institute
State the negative pole of constant-current charge unit (19)；Described solid-state switch assembly (20) and described pulse power switch assembly (22)
Junction, described constant-current charge unit (19) negative pole between access described storage capacitor (18)；Described constant-current charge
Between the negative pole of unit (19), described pulse power switch assembly (22) and the junction of described wave regulating resistor (23)
Access described commutation diode (17)；
The control end of described solid-state switch assembly (20) and described pulse power switch assembly (22) is all connected with described sequential
Control unit (21) controls to be driven by described timing control unit (21).
High speed repetition pulse formula Radial Flow minimum gas supply valve the most according to claim 6, it is characterised in that
Described timing control unit (21) includes three control signal wires, and wherein, the first control signal wire connects described solid
State switch module (20), the second control signal wire connects described pulse power switch assembly (22), the 3rd control signal wire
Access thruster discharge switch assembly.
8. according to the arbitrary described high speed repetition pulse formula Radial Flow minimum gas supply valve of claim 1 to 7, it is characterised in that
Described drive coil (14) uses resistant to elevated temperatures multiply enamel-covered wire to be entwined.
9. according to the arbitrary described high speed repetition pulse formula Radial Flow minimum gas supply valve of claim 1 to 7, it is characterised in that
Described reed (15) uses high conductivity beallon punch forming and forms through Ageing Treatment.
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| CN201610413918.8A CN105840904B (en) | 2016-06-14 | 2016-06-14 | High speed repetition pulse formula Radial Flow minimum gas supply valve |
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| CN201610413918.8A CN105840904B (en) | 2016-06-14 | 2016-06-14 | High speed repetition pulse formula Radial Flow minimum gas supply valve |
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| CN105840904B CN105840904B (en) | 2017-11-28 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108061024A (en) * | 2016-11-09 | 2018-05-22 | 英业达(重庆)有限公司 | Air flow-producing device and airflow generating method |
| CN108061025A (en) * | 2016-11-09 | 2018-05-22 | 英业达(重庆)有限公司 | Air flow-producing device and airflow generating method |
| CN110701319A (en) * | 2019-09-30 | 2020-01-17 | 清华大学 | Vortex driven valve |
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| CN110701319A (en) * | 2019-09-30 | 2020-01-17 | 清华大学 | Vortex driven valve |
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|---|---|
| CN105840904B (en) | 2017-11-28 |
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