CN105129067B - A kind of current limliting hermetic type air bleeding valve and its spacing control method for aerostatics - Google Patents
A kind of current limliting hermetic type air bleeding valve and its spacing control method for aerostatics Download PDFInfo
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- CN105129067B CN105129067B CN201510418567.5A CN201510418567A CN105129067B CN 105129067 B CN105129067 B CN 105129067B CN 201510418567 A CN201510418567 A CN 201510418567A CN 105129067 B CN105129067 B CN 105129067B
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Abstract
A kind of current limliting hermetic type air bleeding valve and its spacing control method for aerostatics of the invention, the air bleeding valve includes：Motor, leading screw, bonnet, sealing ring, column, pedestal, upper limit bit unit, control circuit, gear block, support, base, driven pulley and valve body, bonnet are covered on the valve port of sealing ring and valve body；Control circuit and motor connection；Motor is connected with bonnet, is lifted and moved down along leading screw for application valve cover；Upper limit bit unit and control circuit connection；Gear block is fixedly connected with leading screw；Gear block is set to be moved up and down along leading screw when motor is rotated, gear block is contacted with upper limit bit unit, upper limit bit unit cutting-off controlling circuit, motor stalling, bonnet is in maximum open configuration；When motor reversal moves down gear block, bonnet is contacted with sealing ring and reaches default impaction state, and pretightning force is kept between bonnet and sealing ring, controls the current limliting cut-out motor of circuit to power, and bonnet is fastened automatically and in sealing closed mode.
Description
Technical field
The invention belongs to aviation aerostatics technical field, it is related to a kind of current limliting hermetic type air bleeding valve for aerostatics.
Background technology
Aerostatics is a kind of lighter-than-air craft.Utricule is made up of polymer composite, and density is filled with air bag
The buoyance lift gas smaller than air, the density contrast of gas provides quiet buoyancy inside and outside air bag, so as to obtain the liter that can overcome own wt
Power liter.
Aerostatics is the flexible body of inflation, it is necessary to by Stress control so that external and internal pressure is poor in whole flight course
It is maintained in the range of certain, so as to keep the outer shape of whole aerostatics.In uphill process, as flying height increases,
Outside air density and atmospheric pressure are gradually reduced, and the buoyance lift gas volume in aerostatics expands rapidly.In order to avoid pressure difference mistake
Cause explosion greatly, it is necessary to which certain internal gas, the usually gas of air bag are discharged by air bleeding valve.Air bleeding valve is usually
Intermittent work, most time is in the state that bonnet is closed, and it requires under bonnet closed mode there is air-tightness higher,
Prevent gas from persistently revealing；And for the helium air bleeding valve for main gasbag, it is general only in case of emergency to need to open discharge
Helium, most times are in the closed mode of bonnet 3, because helium is the buoyance lift gas of aerostatics, will be direct if any leakage
Influence aerostatics lift, so helium air bleeding valve is higher to air-tightness requirement.
Traditional aerostatics exhaust structure as shown in figure 1, including motor 1, leading screw 2, bonnet 3, sealing ring 4, column 5,
Pedestal 6, upper limit bit unit 7, control circuit 8, gear block 9, support 10, base 11, driven pulley (in Fig. 1 be flag activation number),
Valve body 13, lower limit bit unit 14.Wherein：Circuit is cut off after the upper limit bit unit 7 or lower limit bit unit 14 that block position-limit mechanism portion,
So that motor 1 is stalled.Conventional exhaust valve when bonnet 3 are closed, come by the position for relying primarily on adjustment lower limit bit unit 13
On the opportunity of the power-off of application valve body motor 1, there are problems that two：
If the 1, motor 1 is powered off too early, the situation that bonnet 3 is not closed completely just occurs, and the position of the switch is mainly by peace
Dress personnel's manual adjustment, higher to assembly precision requirement, quality conformance cannot ensure, microswitch is due to vibration in use
There is displacement etc. reason, and also result in situation about being not closed completely.Even if being closed come controlled motor using infrared non-contact switch
Disconnected, it is also desirable to the position of manual adjustment infrared switch, quality assurance is a problem.
It is airtight even if the 2, bonnet has arrived lower limit and enters closed mode, but because bonnet 3 is not compressed to sealing ring 4
Property is not good enough, it is also possible to cause gas to leak.
The content of the invention
(1) technical problem to be solved
In order to limit element needs manual adjustment in the presence of solving the existing air bleeding valve for aerostatics, to assembly precision
It is required that it is too high, and there is no pretightning force during bonnet closing, it is impossible to ensure the problem of enough air-tightness.
(2) technical scheme
A kind of technical scheme of current limliting hermetic type air bleeding valve for aerostatics that first aspect present invention is provided includes：Electricity
Machine, leading screw, bonnet, sealing ring, column, pedestal, upper limit bit unit, control circuit, gear block, support, base, driven pulley and valve
Body, wherein：Bonnet is covered on the valve port of sealing ring and valve body；Control circuit and motor connection, for controlled motor rotate and
Limiting motor electric current automatic cut-off motor is powered；Motor is connected with bonnet, is lifted and moved down along leading screw for application valve cover；The upper limit
Bit unit and control circuit connection；Gear block is fixedly connected with leading screw；Gear block is set to be moved up and down along leading screw when motor is rotated, gear
Position block is contacted with upper limit bit unit, upper limit bit unit cutting-off controlling circuit, and motor stalling, bonnet is in maximum open configuration；When
Motor reversal moves down gear block, and bonnet is contacted with sealing ring and reaches default impaction state, bonnet and sealing ring it
Between keep pretightning force, control the current limliting automatic cut-off motor of circuit to power, bonnet is fastened automatically and in sealing closed mode.
Second aspect present invention provides a kind of control method spacing to the current limliting hermetic type air bleeding valve of aerostatics, the method
The step of include it is as follows：1) when needing to close air bleeding valve, control an interface end of circuit to be connected with power positive end, control circuit
Another interface end be connected with power ground end, at this moment control circuit enable, motor-driven valve running body to leading screw bottom, valve body
Buckle and cause that the operating current of motor gradually increases, when the operating current of motor is more than operating current threshold value, and operating current
Duration is more than duration threshold, then control the ic core sector-meeting triggering Current limited Control function of circuit, controls circuit
Without output voltage, motor will be powered off after valve body compression, the self-locking action of motor reducer so that valve body can keep certain
Pretightning force；2) when needing to open air bleeding valve, control an interface end of circuit to be connected with power ground end, control the another of circuit
Interface end is connected with power positive end, controls the lower limit control module of circuit to be bypassed, and after the valve body of air bleeding valve is opened, valve body exists
The upper limit moved on leading screw is still and is controlled by upper limit bit unit；Due to the conversion in the power supply direction of control circuit, control electricity
The enable pin level of the lower limit module on road is driven high；3) when being again switched off air bleeding valve, an interface end and electricity of circuit are controlled
Source anode connection, controls another interface end of circuit to be connected with power ground end, controls the enable pipe of the lower limit module of circuit
Pin level is driven high again, forms the upset of level, controls the lower limit control module of circuit to release latch mode, and air bleeding valve is extensive
Multiple normal work, completes a circulation of spacing control.
(3) beneficial effect
Air bleeding valve is opened when utricule pressure is excessive and is exhausted as the executing agency of Stress control, is reached in pressure
Closed after desired value, aerostatics is kept safe and reliable aerodynamic configuration.
The present invention uses current of electric as spacing control parameter, is automatically cut off after current of electric increases to certain value
Motor power, using motor self-lock force by bonnet keep in off position, now due to metering function, bonnet close closely and
The size for having certain pretightning force, pretightning force can set according to current limliting size, thus these technical characteristics in the present invention
Solve motor power-off too early, the problem that bonnet is not closed completely occur.The present invention need not install physics limit switch, use electricity
The method of flow control comes limiting valve cap closed position, you can ensures that bonnet is closed closely, and ensures valve with certain pretightning force
Air-tightness between lid and sealing ring.After bonnet is closed, when motor loads backward voltage, outer power-up can be dexterously utilized
Flat upset will control the latch mode of circuit to release, and bonnet can be cycled on and off normally.Control electricity of the invention
Road controls exhaust valve close closed position using the principle of current limit, does not have artificial alignment error, and good product consistency, quality can
Lean on, it is possible to the pretightning force closed come application valve cover by the size of current limliting, bonnet air-tightness can be dramatically increased, in view of this hair
Bright above-mentioned technical characteristic, the present invention is solved without the physical location limit switch using lower limit in the prior art, the present invention
The air bleeding valve of the lower limit that conventional limit switch or infrared switch are closed as bonnet, there is restraining position needs artificial tune
Section, the unmanageable problem of bonnet seal, present invention also avoids the spacing position that long-time circulating open close limit switch is caused
Offset problem is put, product reliability is improved.
Brief description of the drawings
Fig. 1 shows the structural representation of existing aerostatics air bleeding valve；
Fig. 2 shows current limliting hermetic type exhaust structure schematic diagram of the invention；
Fig. 3 shows the control circuit structural representation of air bleeding valve of the invention.
Fig. 4 shows that vent valve control circuit of the invention implements illustration.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below will be according to example and with reference to attached
Figure is described in detail to specific embodiment of the invention.
Refer to Fig. 2 and current limliting hermetic type exhaust structure of the invention, including motor 1, leading screw 2, bonnet 3, sealing are shown
Circle 4, column 5, pedestal 6, upper limit bit unit 7, control circuit 8, gear block 9, support 10, base 11, driven pulley 12 and valve body 13,
Wherein：
Embodiment 1：Preferable situation should have certain pretightning force after bonnet 3 is closed, it is ensured that air bleeding valve air-tightness,
This is even more important for the helium air bleeding valve of aerostatics main gasbag.Bonnet 3 is covered on the valve port of sealing ring 4 and valve body 13；Control
Circuit processed 8 is connected with motor 1, and for the rotation of controlled motor 1 and the electric current of limiting motor 1, automatic cut-off motor 1 is powered；Motor 1
It is connected with bonnet 3, is lifted and moved down along leading screw for application valve cover 3；Upper limit bit unit 7 and control circuit 8 are connected；Gear block 9
It is fixedly connected with leading screw 2；Gear block 9 is set to be moved up and down along leading screw 2 when motor 1 is rotated, gear block 9 is contacted with upper limit bit unit 7,
The cutting-off controlling circuit 8 of upper limit bit unit 7, motor 1 is stalled, and bonnet 3 is in maximum open configuration；When the reversion of motor 1 makes gear block 9
Move down, bonnet 3 is contacted with sealing ring 4 and reaches default impaction state, and pretightning force is kept between bonnet 3 and sealing ring 4,
Control the current limliting automatic cut-off motor 1 of circuit 8 to power, bonnet 3 is fastened automatically and in sealing closed mode.
Embodiment 2：The upper limit of exhaust valve opening only determines the degree that bonnet 3 is opened, and has small alignment error not
The performance of air bleeding valve is influenceed, so the main lower limit for considering to close bonnet 3 makes bonnet by the way of current control here
After 3 contact with sealing ring 4, the electric current brought due to the stall of motor 1 is increased, to a certain extent after power off, size of current can be with
The pretightning force that bonnet 3 is closed is determined, so by circuit design, it is possible to ensure that the bonnet 3 of all productions is closed off in place,
And bonnet 3 has consistent pretightning force after closing, be conducive to strengthening the air-tightness of air bleeding valve.Thus, it is of the invention by valve body
13 it is cylindrical on be laid with a circle screw hole, be connected with aerostatics air bag by the screw hole, valve body 13 is in the layout of aerostatics
Utricule on；Valve port is provided with valve body 13, for the gas inside aerostatics air bag to be discharged；Valve port is cylindrical to be sheathed on sealing ring
Endoporus in, and bonnet 3 is covered on the valve port of sealing ring 4 and valve body 13, when bonnet 3 is closed, when bonnet is closed, bonnet,
Sealing ring and valve port are in sealing state.
Embodiment 3：Multiple columns 5 are located at are linked into an integrated entity between pedestal 6 and valve body 13 and by both respectively, multiple columns
5 are used to support pedestal 6 and valve body 13；Leading screw 2 is the screw hole and bonnet 3 laid on lower surface flange arrangement by leading screw 2
It is fixedly connected, leading screw 2 leaves and cover valve port for opening and closing bonnet.The upper surface of leading screw 2 has a screwed hole.
Embodiment 4：Upper limit bit unit and control circuit are rack-mount；Motor output shaft and driven pulley are arranged on base
It is interior, connected by gear, play a part of motor output and slow down.
Embodiment 5：The present invention uses the electric current of motor 1 as spacing control foundation, when the electric current of motor 1 increases to setting
The power supply of automatic cut-off motor 1 after value, pass is maintained at using the self-lock force of motor 1 by bonnet 3, sealing ring 4, the bonnet of base 11
Closed state, now due to metering function, bonnet 13 is closed closely and has certain pretightning force, and the size of pretightning force can be according to control
The current limliting size of circuit processed keeps the size of pretightning force to set between bonnet 3 and sealing ring 4.
Embodiment 6：The control circuit 8 shown in Fig. 3 is referred to, mainly includes upper limit control module 81, Bypass Control mould
Block 82 and lower limit control module 83, power supply interface 84；The upper limit control module 81, bypass control module 82, lower limit
To be connected in parallel, the two ends being connected in parallel connect control module 83 with corresponding power supply interface 84, motor 1 respectively, wherein：
Upper limit control module 81, for the maximum position that application valve cover 3 is opened；
Upper limit control module 81, mainly using the microswitch that physics is spacing, when motor 1 drives gear block 9 to move
To the position of microswitch, the contact microswitch push-button of gear block 9, now for disconnecting the current supply circuit of motor 1；
Bypass control module 82, for Bypass Control corresponding upper limit control module 81, lower limit control module 83
Work；
Bypass control module 82, using diode forward turn on, reversely by characteristic, motor 1 power supply both positive and negative polarity turn
After changing, corresponding upper limit control module 81 or lower limit control module 83 is set to play position-limiting action, such as motor 1 is positive confession
When electric, motor 1 should drive gear block 9 to move downward, and bypass control module 82 is bypassed to upper limit control module 81, this
When lower limit control module 83 work；When 1 reverse power supply of motor, motor 1 drives gear block 9 to move upwards, Bypass Control mould
Block 82 is bypassed to lower limit control module 83, and now upper limit control module 81 works；
Lower limit control module 83, differentiate motor 1 power supply size of current, determine motor 1 working condition, when electric current mistake
Greatly, and the electric current excessive duration exceeded current limit function triggering time, for being automatically powered off to motor 1；
Power supply interface 84, for being carried for upper limit control module 81, bypass control module 82 and lower limit control module 83
Power supply source.
Embodiment 7：Set the current limit triggered time be greater than electric motor starting immediate current increase duration,
And the duration of the electric current increase that motor rotation blockage causes when being closed less than bonnet, that is, reach and closed by current limit application valve cover
Close the purpose of degree.
Embodiment 8：Refer to Fig. 4 and vent valve control circuit embodiment of the invention is shown, wherein：The upper limit control
Module 81 is single-pole double-throw switch (SPDT) SPDT.The bypass control module 82 includes the first diode D1 and the second diode D2；Institute
Stating lower limit control module 83 includes：IC chip TPS2421-1 (hereinafter referred TPS), resistance R1 and electric capacity C1；It is described
IC chip TPS contains the first pin IN, the second pinThree-prong Iset, the 4th pin CT, the 5th pin
OUT, ground pin GND；Power supply interface 84 includes the first supply port A, the second supply port B and feedback of status end C；Wherein：
First supply port A negative ends respectively with the first diode D1, the first pin IN are connected；
Second supply port B one end, one end of electric capacity C1, the negative end of the second diode D2, respectively with resistance R1
Two pinsGround pin GND is connected；
The forward end of the first diode D1 one end respectively with motor 1, the 5th pin OUT are connected；
The forward end of the second diode D2 other end respectively with load motor 1, feedback of status end C are connected；
Three-prong Iset, the 4th pin CT are connected with the other end of corresponding resistance R1, the other end of electric capacity C1；
In the first supply port A and the second supply port B two ends loading forward voltage, the of IC chip TPS
Two pinsIt is low level, IC chip TPS is in enabled state, then the 5th pin OUT of IC chip TPS
The fault curre of setting can have been exceeded, at this moment integrated electricity with normal output voltage, if the electric current of load motor 1 increases suddenly
Road chip TPS starts to block timing, if being not up to the failure triggered time in timing, below current reduction to fault curre,
Then timing is reset, and the 5th pin OUT is normally exported, if the electric current of motor 1 is continued above fault curre, the time has exceeded event
The barrier triggered time, then event of failure is triggered, at this moment the field-effect transistor shut-off inside IC chip TPS, the 5th pin
OUT Non voltage outputs.Because IC chip TPS2421-1 is failure latch-type, as long as so in this case not the
One pin IN is powered back up or in the second pinThere is level to overturn, the 5th pin OUT will keep latch mode, no-voltage
Output.Now due to the self-locking action of metering function and motor 1, certain pretightning force is maintained between bonnet 3 and sealing ring 4,
Sealing ring 4 is quality of rubber materials, and with certain elasticity, the stress deformation in the presence of pretightning force increased the airtight of bonnet 3
Property.The first supply port A and power ground as the first supply port A and the second supply port B two ends loading backward voltage
End GND connections, the second supply port B is connected with power positive end+12V, because the bypass of the first diode D1 is acted on, integrated circuit
Chip TPS does not work, and bonnet 13 can be with normally-open, and upper limit bit unit 7 still determines that physics is spacing by limit switch.Due to collection
Into second pin of circuit chip TPSThere is level upset, so in the first supply port of subsequent cycle A, the first feeder ear
During mouth B loading forward voltages, IC chip TPS relieves latch mode, can be with normal work, by current limit control
The lower limit of bonnet 13.
It is continuous to refer to Fig. 3, wherein need to set two parameters according to the actual working state of air bleeding valve being：Cut-off current and limit
The stream triggered time；The cut-off current is, by the resistance R1 being connected between three-prong Iset and power ground end GND, to pass through
Resistance value is set to obtain cut-off current；The current limliting triggered time is to rely on to be connected to the 4th pin CT and power ground end GND
Between electric capacity C1, the current limliting triggered time is obtained by setting capacitance.
Assuming that air bleeding valve running current is 0.3A, we can set cut-off current I for 1A, be provided according to technical manual
Formula resistance value R1=200/I=200/1=200K Ω, it is assumed that motor 1 start moment the peak point current duration be
10ms, as long as we set the current limliting triggered time is more than 10ms, according to the formula of technical manual：
Capacitance C1=Tfault/(38.9×103)=10 × 10-3/38.9×103=0.25 μ f can choose 1 μ f here,
Current limliting triggered time TfaultAbout 40ms.
The step of limit control method of the current limliting hermetic type air bleeding valve to aerostatics of the invention, the method, includes as follows：
1) when needing to close air bleeding valve, circuit is in Fig. 3 states, is controlling the first supply port A of circuit 8 with power supply just
End+12V connections, the second supply port B is connected with power ground end GND, at this moment controls the IC chip TPS of circuit 8 to make
Can, motor 1 is descending, because exhaust valve operation electric current is 0.3A under normal circumstances, will not trigger failure；Motor 1 runs to leading screw 2
When bottom and the fastening of valve body 13 so that the operating current of motor 1 gradually increases, when the operating current of motor 1 is more than work
Current threshold 1A, and operating current duration be more than duration threshold 40ms when, control circuit 8 IC chip
TPS can trigger Current limited Control function, and Non voltage output, motor 1 will be powered off after the compression of valve body 13, at this moment due to motor 1
The self-locking action of decelerator so that valve body 13 can keep certain pretightning force.
2) when needing to open air bleeding valve, control the first supply port A of circuit 8 to be connected with power ground end GND, control
Second supply port B of circuit 8 is connected with power supply+12V ends, at this time due to the effect of diode, controls the integrated electricity of circuit 8
The lower limit control module 83 of road chip TPS is bypassed, and after the valve body 13 of air bleeding valve is opened, upper limit is still by upper limit bit
The limit switch of part 7 works.It should be noted that the conversion in the power supply direction due to control circuit 8, controls the integrated of circuit 8
The second pin in the lower limit control module 83 of circuit chip TPSLevel has actually been driven high.
3) control the first supply port A of circuit 8 to be connected with+12V feeder ears when being again switched off air bleeding valve, control circuit 8
The second supply port B be connected with power supply GND, control circuit 8 IC chip TPS the second pinLevel and quilt
Draw high, form the upset of level, control the lower limit control module in the IC chip TPS of circuit 8 to release breech lock shape
State, air bleeding valve recovers normal work, reaches the circulation of the first step.
4) motor 1 start immediate current may be larger, but motor 1 to start the startup duration of moment shorter, can be with
By the careful design failure triggered time, the failure triggered time is set to be suitably larger than starting current.Certain failure triggered time
Be not the bigger the better, air bleeding valve valve body 13 compress when, it is necessary in time switch off control circuit 8 the 5th pin OUT use
To protect motor 1 and mechanical structure.
If 5) air bleeding valve is used at low temperature, because the toughness of lubricating oil strengthens, the normal work of motor 1 may be made
Electric current increases, and needs the toughness for considering lubricating oil to strengthen factor when fault current is set.
Above by citing, the present invention is described, but, however it is not limited to the present invention.It should be understood that in the principle
Under spirit, example can also be made a variety of changes, changed and combined, as long as these changes and change and combination
It covered in scope of the presently claimed invention, protection scope of the present invention all should be belonged to.
Claims (9)
1. a kind of current limliting hermetic type air bleeding valve for aerostatics, including：Motor, leading screw, bonnet, sealing ring, column, pedestal,
Upper limit bit unit, control circuit, gear block, support, base, driven pulley and valve body, it is characterised in that：
Bonnet is covered on the valve port of sealing ring and valve body；
Control circuit and motor connection, rotate for controlled motor and limiting motor electric current automatic cut-off motor are powered；
Motor is connected with bonnet, is lifted and moved down along leading screw for application valve cover；
Upper limit bit unit and control circuit connection；Gear block is fixedly connected with leading screw；
Gear block is set to be moved upwards along leading screw when motor is rotated, gear block is contacted with upper limit bit unit, the cut-out control of upper limit bit unit
Circuit processed, motor stalling, bonnet is in maximum open configuration, wherein, the upper limit bit unit includes microswitch；
When motor reversal moves down gear block, bonnet is contacted with sealing ring and reaches default impaction state, bonnet and close
Pretightning force is kept between seal, controls the current limliting automatic cut-off motor of circuit to power, bonnet fastened automatically and is closed in sealing
State；
The control circuit includes upper limit control module, bypass control module, lower limit control module and power supply interface；It is described
Upper limit control module, bypass control module, lower limit control module to be connected in parallel, the two ends being connected in parallel respectively with electricity
Machine, the connection of corresponding power supply interface, wherein：
Upper limit control module, for the maximum position that application valve cover is opened；
Upper limit control module, when motor drives gear block to move to the position of microswitch, gear block contact microswitch is pressed
Button, for disconnecting motor current supply circuit；
Bypass control module, for the corresponding upper limit control module of Bypass Control, the work of lower limit control module；
Lower limit control module, the working condition for differentiate the motor size of current powered, determining motor, when electric current is excessive, and electricity
Flow through the big duration exceeded current limit triggering time, then motor is automatically powered off；
Power supply interface, for providing power supply for upper limit control module, bypass control module and lower limit control module.
2. the current limliting hermetic type air bleeding valve for aerostatics according to claim 1, it is characterised in that：On valve body is cylindrical
A circle screw hole is laid with, screw hole is connected with aerostatics air bag, for valve body to be laid in into utricule, valve is offered on valve body
Mouthful, for discharging the gas in aerostatics air bag, valve port is cylindrical to be sheathed in the endoporus of sealing ring, bonnet, close when bonnet is closed
Seal and valve port are in sealing state.
3. the current limliting hermetic type air bleeding valve for aerostatics according to claim 1, it is characterised in that：Multiple columns
It is located between pedestal and valve body respectively and connects, for supports pedestal and valve body；On the flange of leading screw lay screw hole with
Bonnet is fixedly connected, and leading screw leaves and cover valve port for opening and closing bonnet.
4. the current limliting hermetic type air bleeding valve for aerostatics according to claim 1, it is characterised in that：Upper limit bit unit and
Control circuit is rack-mount；Motor output shaft and driven pulley are arranged in base, are connected by gear, play motor output
The effect of deceleration.
5. the current limliting hermetic type air bleeding valve for aerostatics according to claim 1, it is characterised in that the electricity of the motor
Flow as spacing control foundation, the power supply of automatic cut-off motor after the electric current of motor increases to a numerical value, using motor
Self-lock force keeps in off position bonnet, sealing ring, base, bonnet, and the current limliting size according to control circuit sets bonnet
The size of pretightning force is kept and sealing ring between.
6. the current limliting hermetic type air bleeding valve for aerostatics according to claim 1, it is characterised in that the electric current is set
The limitation triggered time is greater than the duration of electric motor starting immediate current increase, and motor rotation blockage causes when being closed less than bonnet
Electric current increase duration, that is, reach by current limit application valve cover close degree purpose.
7. the current limliting hermetic type air bleeding valve for aerostatics according to claim 1, it is characterised in that the upper limit control
Molding block is single-pole double-throw switch (SPDT)；The bypass control module includes the first diode and the second diode；The lower limit control
Molding block includes：IC chip, resistance and electric capacity；The IC chip contains the first pin, the second pin, the 3rd
Pin, the 4th pin, the 5th pin, ground pin；The power supply interface includes the first supply port and the second supply port；Its
In：
First supply port negative end respectively with the first diode, the first pin are connected；
Second supply port one end, one end of electric capacity, the negative end of the second diode, the second pin, ground connection respectively with resistance
Pin is connected；
The forward end of the first diode one end respectively with motor, the 5th pin are connected；
The forward end of the second diode is connected with the other end of motor；
Three-prong, the other end of the corresponding resistance of the 4th pin, the other end connection of electric capacity.
8. a kind of spacing control method of the current limliting hermetic type air bleeding valve of aerostatics to described in claim 1, the step of the method
Suddenly include：
1) when needing to close air bleeding valve, control an interface end of circuit to be connected with power positive end, control another interface of circuit
End is connected with power ground end, at this moment controls circuit to enable, and motor-driven valve running body to leading screw bottom, valve body is buckled and causes electricity
The operating current of machine gradually increases, and when the operating current of motor is more than operating current threshold value, and the duration of operating current is big
In duration threshold, then the ic core sector-meeting triggering Current limited Control function of circuit is controlled, controls circuit without output voltage,
Motor will be powered off after valve body compression, the self-locking action of motor reducer so that valve body can keep certain pretightning force；
2) when needing to open air bleeding valve, an interface end of circuit is controlled to be connected with power ground end, control the another of circuit connect
Mouth end is connected with power positive end, controls the lower limit control module of circuit to be bypassed, and after the valve body of air bleeding valve is opened, valve body is in silk
The upper limit moved on thick stick is still and is controlled by upper limit bit unit；Due to the conversion in the power supply direction of control circuit, circuit is controlled
The enable pin level of lower limit module be driven high；
3) when being again switched off air bleeding valve, control an interface end of circuit to be connected with power positive end, control another interface end of circuit
It is connected with power ground end, controls the enable pin level of the lower limit module of circuit to be driven high again, forms the upset of level,
The lower limit control module of circuit is controlled to release latch mode, air bleeding valve recovers normal work, completes a circulation of spacing control.
9. control method according to claim 8, increases in the Current limited Control function according to the electric current of electric motor starting moment
Greatly, but the duration is shorter, the failure triggered time of setting control circuit more than the duration is started, can correctly realize current limliting
Control function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418567.5A CN105129067B (en) | 2015-07-16 | 2015-07-16 | A kind of current limliting hermetic type air bleeding valve and its spacing control method for aerostatics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510418567.5A CN105129067B (en) | 2015-07-16 | 2015-07-16 | A kind of current limliting hermetic type air bleeding valve and its spacing control method for aerostatics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105129067A CN105129067A (en) | 2015-12-09 |
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| CN201510418567.5A Expired - Fee Related CN105129067B (en) | 2015-07-16 | 2015-07-16 | A kind of current limliting hermetic type air bleeding valve and its spacing control method for aerostatics |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106892082B (en) * | 2015-12-17 | 2020-12-04 | 东莞前沿技术研究院 | A exhaust subassembly and aerostatics for aerostatics |
| CN106523764B (en) * | 2016-12-20 | 2019-06-21 | 中国科学院光电研究院 | A kind of control device of exhaust valve |
| CN107618649B (en) * | 2017-08-24 | 2020-01-14 | 北京航空航天大学 | Aerostat zero-pressure-difference square exhaust device |
| CN107651159B (en) * | 2017-08-24 | 2020-01-14 | 北京航空航天大学 | Aerostatics zero pressure differential circular exhaust apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4353291B2 (en) * | 2007-09-20 | 2009-10-28 | 株式会社デンソー | Valve open / close control device |
| CN201318496Y (en) * | 2008-12-08 | 2009-09-30 | 郑龙永 | Gas meter electrical controlled valve |
| CN202115698U (en) * | 2011-06-07 | 2012-01-18 | 北方电科集团有限公司 | Integrated pressure regulating device for airship |
| CN203286094U (en) * | 2013-02-26 | 2013-11-13 | 杨志光 | Full electronic control circuit of ceramic seal electrically operated valve |
| CN204114290U (en) * | 2014-07-18 | 2015-01-21 | 中国科学院光电研究院 | A kind of aerostatics photoelectric control valve |
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