CN110272014A - The accuracy control method and system of inflator head liquid level tube position - Google Patents
The accuracy control method and system of inflator head liquid level tube position Download PDFInfo
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- CN110272014A CN110272014A CN201910602846.5A CN201910602846A CN110272014A CN 110272014 A CN110272014 A CN 110272014A CN 201910602846 A CN201910602846 A CN 201910602846A CN 110272014 A CN110272014 A CN 110272014A
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- level tube
- inflator head
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- 239000007788 liquid Substances 0.000 title claims abstract description 231
- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000007789 gas Substances 0.000 claims abstract description 24
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 25
- 230000008569 process Effects 0.000 abstract description 14
- 230000009471 action Effects 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 22
- 230000001105 regulatory effect Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 238000001802 infusion Methods 0.000 description 6
- 230000009469 supplementation Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/08—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred
- B67D7/12—Arrangements of devices for controlling, indicating, metering or registering quantity or price of liquid transferred operated by movement of delivery hose or nozzle or by devices associated therewith
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/44—Filling nozzles automatically closing
- B67D7/46—Filling nozzles automatically closing when liquid in container to be filled reaches a predetermined level
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/42—Filling nozzles
- B67D7/44—Filling nozzles automatically closing
- B67D7/52—Filling nozzles automatically closing and provided with additional flow-controlling valve means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/06—Details or accessories
- B67D7/72—Devices for applying air or other gas pressure for forcing liquid to delivery point
- B67D7/725—Devices for applying air or other gas pressure for forcing liquid to delivery point using negative pressure
Abstract
The accuracy control method and system of a kind of inflator head liquid level tube position；This method is to stretch out the liquid level tube in inflator head by hydraulic control using the double medium compound action drivings of liquids and gases, retracted by pressure control, make liquid level tube locking in any position；The control system includes the gentle compression and back pipeline of hydraulic drive pipeline；Hydraulic drive pipeline is used to connect the adjusting epicoele that cylinder is executed in inflator head, and air pressure retracts pipeline and is used to connect the adjusting cavity of resorption for executing cylinder in inflator head.The present invention realizes that liquid level tube extends and retracts by hydraulic-oleo-pneumatic process of air pressure-, before this gas cap liquid, then is liquid top gas, and fluid traffic direction is opposite when liquid level tube extends and retracts.The accurate control for realizing liquid level tube position accurately, reliable realizes liquid level tube any position locking and solves the problems, such as that liquid level tube is inaccurate by filling pressure active position or moves repeatedly.
Description
Technical field
The present invention relates to one kind to vacuumize and fill in liquid process for automotive system fluid reservoir to inflator head liquid level tube
The method and system that position is accurately controlled belongs to liquid and accurately fills control technology field.
Background technique
With the development of conventional fuel oil automobile and new-energy automobile, vehicle more multiplicity and abundant, multi-vehicle-type mixed production
As current mainstream production model.Filling liquid is the important link of automobilism.As depicted in figs. 1 and 2, existing inflator head
25 structure includes executing cylinder and liquid level tube 26, and executing cylinder is in inflator head 25 for controlling the execution machine of the lifting of liquid level tube 26
Structure executes and regulating piston 28 is arranged in cylinder, and regulating piston 28 will execute cylinder and be divided into adjusting epicoele 20 and adjust cavity of resorption 27.Liquid level tube
26 connect with regulating piston 28, and liquid level tube 26 protrudes into oil can 21.Oil can 21 is come on user's vehicle, oil can 21 is for containing
Liquid 23, the interior setting lower fluid level limit 22 of oil can 21 and upper fluid level limit 24 (graduation mark up and down on oil can).25 liquid level tube of inflator head
Filler line 17 and liquid back pipe 18 are provided on 26, outside liquid enters oil can 21 by filler line 17, and liquid back pipe 18 is used for extra
Liquid suck back, the liquid lower than 26 bottom end outlet of liquid level tube will be unable to suck back, namely play liquid level in control oil can 21
Effect.Position by controlling liquid level tube 26 is in the liquid level in oil can 21 between lower fluid level limit 22 and upper fluid level limit 24.
Currently, being led to meet the requirement that automobile fills the more liquid levels of multi-vehicle-type in liquid process in liquid fill equipment application
Domain uses multiple technologies:
1. in such a way that pneumatic linear actuator two sides drive piston or one lateral spring of side pneumatic linear actuator, to drive filling head to fill
Stretching for pipe, realizes the adjustment of liquid level.As disclosed in CN105555703A " fill adapter ", axial direction of the fill adapter in piston
There is the first cylinder cavity and the second cylinder cavity on opposite side, wherein the first cylinder cavity is connect with compressed gas, and
And wherein the second cylinder cavity equally connect or load with compressed gas it is elastic, so that piston passes through in the first cylinder cavity
It can be moved with unequal pressure and/or power in the second cylinder cavity and by empty in the first cylinder cavity and the second cylinder
In chamber equal pressure and/or power can position be fixedly locked, thus pipeline be passed through mouth can two terminal locations it
Between multiple axial duct positions on position, can be filled and/or aspirate over these locations and thus adjust liquid
Filling height.
2. realizing the control of continuous adjustment filler pipe position using the driving method of motor.Such as CN107428522A public affairs
" for the filling the adapter and method of fluid circuit " opened: including at least one conduit, which can be connected
To fills unit and the filling fluid being contained in fluid circuit can be aspirated and can be returned with filling fluid filling fluid
Road；And plunger tube, the plunger tube are fixed to the piston that can be adjusted axially on axis Y in the first guiding tube.This turn
It connects device and piston is activated by electric actuator, piston pushes the control of the linkage realization plunger tube position of liquid in two chambers.
3. realizing the Liquid level of two positions using the two point form mode position of cylinder.
The above existing liquid-filled mode of automobile there are the problem of:
By the way of pneumatically driven piston, since gas can compress, during filling head is evacuated with liquid filling,
It is uncontrolled to will lead to refueling nozzle by the reaction of negative pressure of vacuum and filling liquid positive pressure pressure for the adjustable refueling nozzle of piston driving
The movement of system causes final liquid level unstable, and deviation is more than 2mm or more, cannot achieve the requirement of accurate control position；
There is also problems by the way of motor drive adjusting, " for filling stream disclosed in CN107428522A
The adapter and method in body circuit " in its drive liquid be using servo-electric push away cylinder, be described as " electric actuator actuating live
Plug ", principle is that cylinder pressurizing urges piston press liquid is pushed away by servo-electric, and the liquid level tube position of filling head is to pass through servo
It is electronic push away cylinder motor encoder provide position, by liquid convert in equal volume in the way of, calculate liquid level tube on filling head
Mobile positional distance, position control are the change in location utilization calculating that cylinder is pushed away by servo-electric not on filling head
Mode controls the position of liquid level tube, can not achieve the accurate locking of liquid level tube any position.Further, since motor and driving device
It needs to be mounted on filling head, increases the weight and volume and higher cost of filling head, and due to motor driven cable
It easily loses, brings failure rate high, also which is gradually by market.
Summary of the invention
The present invention fills the problem of Liquid level inaccuracy in liquid technology for existing automobile, incompressible using liquid
Characteristic, propose a kind of accuracy control method of inflator head liquid level tube position, can be realized the accurate lock of liquid level tube any position
Only, it effectively solves the above problems.The system for realizing this method is provided simultaneously.
The accuracy control method of inflator head liquid level tube position of the invention, using following technical scheme:
The control method makes the liquid level tube in inflator head pass through liquid using the double medium compound action drivings of liquids and gases
Voltage-controlled system is stretched out, and is retracted by pressure control, is made liquid level tube locking in any position.
It is all that side is pushed by hydraulic or air pressure, the other side passes through gas during the liquid level tube extends and retracts
Pressure or hydraulic thrust resistance.Liquid level tube is to push gentle pressure by hydraulic and push away resistance when stretching out, when liquid level tube retracts by air pressure push with
Hydraulic thrust resistance.
The hydraulic coupling when liquid level tube stretches out is to push to generate by air pressure.
The detection of the liquid level tube position is realized by the position sensor being arranged in inflator head.
When the liquid level tube is stretched out by hydraulic control, the liquid of hydraulic control liquid is generated by liquid level sensor monitoring
, it is supplemented if control liquid is reduced, to prevent the control for lacking influence inflator head execution cylinder due to control liquid dynamic
Make.The control liquid uses liquid identical with filling liquid.
Above method compressed air-driven liquid, the position detection of liquid level tube are the liquid level tube positions in inflator head
Set measurement directly, accurately, driving force is at low cost using compressed air, easy to accomplish.
The control system for realizing the above method, using following technical scheme:
The control system, including the gentle compression and back pipeline of hydraulic drive pipeline；Hydraulic drive pipeline is for connecting inflator head
The middle adjusting epicoele for executing cylinder, air pressure retract pipeline and are used to connect the adjusting cavity of resorption for executing cylinder in inflator head.
Outer displacement sensor is provided on the outside of the execution cylinder.
Master cylinder, air inlet pipe and outlet tube are provided on the hydraulic drive pipeline；Propelling piston is provided in master cylinder,
Master cylinder inside division is control epicoele and control cavity of resorption by propelling piston；It controls epicoele and connects air inlet pipe, connected in air inlet pipe
Have and stretches out pressure regulator and air intake control valve；It controls cavity of resorption and connects outlet tube, be provided with liquid control valve on outlet tube, out liquid
Control valve connects the adjusting epicoele.The liquid control valve is connect with shuttle valve, and shuttle valve and air intake control valve and the air pressure contract
Return piping connection.The unlatching of liquid control valve is controlled by shuttle valve according to the gas that air intake control valve or air pressure retract pipeline output.
Throttle valve is also connected on the outlet tube.The outlet tube or control cavity of resorption also connect with replenishing line, on replenishing line according to
Secondary connection make-up valve and check valve.Replenishing line is crossed as control cavity of resorption fluid infusion.Liquid level sensor is additionally provided on the master cylinder.
The air pressure, which retracts to be connected on pipeline, retracts pressure regulator and retraction air valve.
Hydraulic tube one end of inflator head is connect with the regulating piston executed in cylinder, one end is protruded into oil can, is set in oil can
Setting upper fluid level limit and lower fluid level limit, (this is the graduation mark up and down on user's vehicle oil can, be can not change, and needs to adjust liquid level
Pipe is deacclimatized), the position that liquid level tube is accurately controlled by regulating piston is in the liquid level in oil can on lower fluid level limit and liquid level
Between limit.
The present invention is driven by liquids and gases compound action, is controlled using the execution cylinder and master cylinder of the double medium effects of gas-liquid
The liquid level tube of inflator head processed realize it is hydraulic stretch out gentle compression and back, by the position sensor feedback location information in inflator head,
It is accurate to realize liquid level tube any position locking.When needing to lock liquid level tube, that closes connection master cylinder control cavity of resorption goes out hydraulic control system
Valve, intracavitary liquid closing in adjusting, since liquid is incompressible, liquid level tube will not generate change in location, liquid level tube because of external force
Locking solves the problems, such as that liquid level tube is inaccurate by filling pressure active position or moves repeatedly in this way.
The process that the present invention realizes that liquid level tube extends and retracts is hydraulic-oleo-pneumatic process of air pressure-, before this pneumatic jack
Liquid, then be liquid top gas.Compressed air is entered by hydraulic drive pipeline when liquid level tube stretches out, and compressed air is when liquid level tube retracts
Air pressure retracts pipeline and enters, and fluid traffic direction is opposite when liquid level tube extends and retracts.
Compressed air only needs common pressure reducing valve to control pressure in the present invention, does not need to carry out using expensive proportioning valve
Adjust air pressure, push away cylinder without using expensive servo-electric, not only save cost, but evaded electric Proportion valve or
Servo-electric pushes away the failure of cylinder, improves reliability.Liquid level tube pushes side in side during extending and retracting and pushes away resistance
Any play gap will not be generated under effect, ensure that liquid level tube being capable of accurate locking in any position.
Detailed description of the invention
Fig. 1 is the control principle schematic diagram of inflator head liquid level tube of the present invention position accuracy-control system.
Fig. 2 is the partial structural diagram of inflator head.
Fig. 3 is the structural schematic diagram of control system.
In figure: 1. master cylinders, 2. propelling pistons, 3. air intake control valves, 4. liquid control valves, 5. throttle valves, 6. check valves,
7. make-up valve, 8. liquid level sensors, 9. shuttle valves, 10. retract air valve, and 11. stretch out pressure regulator, and 12. retract pressure regulator,
13. air inlet pipe, 14. outlet tubes, 15. hydraulic drive pipelines, 16. air pressures retract pipeline；
17. filler line, 18. liquid back pipes, 19. outer displacement sensors, 20. adjust epicoeles, 21. oil cans, under 22. liquid levels
Limit, 23. liquid, 24. upper fluid level limits, 25. inflator heads, 26. liquid level tubes, 27. adjust cavity of resorption, 28. regulating pistons.
Specific embodiment
Accurate control of the present invention to inflator head liquid level tube position is to make to adjust in epicoele 20 for hydraulic oil, adjusts cavity of resorption
It is compressed air in 27, is realized and controlled by master cylinder 1.Using the double medium compound action drivings of liquids and gases, make inflator head
Liquid level tube 26 by hydraulic control stretch out, retracted by pressure control, by the position sensor feedback being arranged in inflator head
The location information of liquid level tube 26, the accurate locking for realizing 26 any position of liquid level tube.Hydraulic control stretching is produced by compressed air
Raw air pressure pushes the liquid in master cylinder 1, and the liquid and inflator head execute the liquid for adjusting epicoele 20 in cylinder and link, and adjusts
The liquid-driving of epicoele 20 executes the gas in cylinder cavity of resorption 27, realizes that liquid level tube 26 stretches out.Pressure control retraction is empty by compression
Gas enters the air pressure generated in adjusting cavity of resorption 27 and pushes the liquid adjusted in epicoele 20, liquid and adjusting epicoele in master cylinder 1
Liquid in 20 links, and gas intracavitary on intracavitary liquid-driving master cylinder 1 under master cylinder 1 realizes that liquid level tube 26 retracts.It holds
It is all that side is pushed by hydraulic or air pressure, separately during propelling piston 2 in row cylinder drives liquid level tube 26 to extend and retract
Side is hindered by air pressure or hydraulic thrust, will not be generated any play gap, be ensure that liquid level tube 26 can control liquid level tube 26 and exist
Any accurate locking in position.
Referring to Fig. 1 and Fig. 3, control system of the invention includes the gentle compression and back pipeline 16 of hydraulic drive pipeline 15, hydraulic
Pipeline 15 is promoted to connect the adjusting epicoele 20 of inflator head 25, air pressure retracts the adjusting cavity of resorption 27 that pipeline 16 connects inflator head 25.Liquid
Pressure propulsion tube road is provided with master cylinder 1, stretches out pressure regulator 11, throttle valve 5 and liquid control valve 4, setting in master cylinder 1
There is propelling piston 2,1 inside division of master cylinder is control epicoele and control cavity of resorption by propelling piston 2, controls epicoele and air inlet pipe 13
It connects, pressure regulator 11 is stretched out in connection in air inlet pipe 13, stretches out pressure regulator 11 and connect with air intake control valve 3；Under control
Chamber connects outlet tube 14, and throttle valve 5 and liquid control valve 4 are connected on outlet tube 14, and liquid control valve 4 connects the tune of inflator head 25
Epicoele 20 is saved, liquid control valve 4 is connect with shuttle valve 9；Outlet tube 14 (or control cavity of resorption) is also connect with liquid supplementation pipe, in liquid supplementation pipe according to
Secondary connection make-up valve 7 and check valve 6 (check valve 6 is connect with throttle valve 5, or is directly connected to control cavity of resorption) are by liquid supplementation pipe
Control cavity of resorption fluid infusion.Liquid supplementation pipe 7 is derived from equipment dispenser pump with filler line 17, is different channel, but liquid source is identical,
It is all filling medium.Liquid level sensor 8 is additionally provided on master cylinder 1.Air pressure, which retracts to be connected on pipeline 16, retracts pressure adjusting
Device 12 and retraction air valve 10.Shuttle valve 9 is connect with air intake control valve 3 and retraction air valve 10, and the unlatching of liquid control valve 4 is by shuttle valve 9
It is controlled according to air intake control valve 3 or the gas for retracting the output of air valve 10, air intake control valve 3 and retraction air valve 10 are interlocking three
Five it is logical in let out valve, it can be achieved that regulating piston 28 extends and retracts the linkage interlocked control of process.Air intake control valve 3 and retraction air valve
10 connect with compressed air source.It executes cylinder and master cylinder 1 is the double medium effects of gas-liquid.
Above-mentioned control system is as described below to the control process of 26 position of liquid level tube in inflator head 25.
When needing liquid level tube 26 to stretch out, air intake control valve 3 is opened.Compressed air is by the stretching pressure that connects in air inlet pipe 13
Draught control mechanism 11 enters the control epicoele (pass through stretch out pressure regulator 11 adjust air pressure) of master cylinder 1, driving propelling piston 2 to
Lower movement, the liquid intracavitary under controlling of master cylinder 1 is pressurized to be released.If intracavity liquid lacks certain under master cylinder 1 controls
Range, driving propelling piston 2 move down the super normal range (NR) of distance, can trigger liquid level sensor 8, issue warning note, control
Cylinder 1 controls lower intracavity liquid less, it is necessary to open 7 fluid infusion of make-up valve.Liquid level sensor 8 is not involved in the movement of control piston
Distance, effect are protections, and intracavitary liquid, which lacks, under preventing master cylinder 1 from controlling (will lead to liquid outflow and lack when maintenance
It is few), influence the movement for executing cylinder.Compressed air opens liquid control valve 4 by shuttle valve 9 simultaneously, and liquid enters by liquid valve 4
The adjusting epicoele 20 of cylinder is executed, regulating piston 28 is pushed to move down, liquid level tube 26 stretches out therewith, realizes liquid driven liquid level tube 26
It stretches out, the moving distance of piston 28 and liquid level tube 26 is detected by outer displacement sensor 19.Adjust the gas warp in cavity of resorption 27
Air pressure retracts pipeline 16 and is discharged, and retracts air valve 10 at this time and communicates with atmosphere.As long as liquid control valve 4 is closed, piston 28 and liquid level
Pipe 26 will locking, will not move.This process is hydraulic-oleo-pneumatic process of air pressure-, before this gas cap liquid, then is liquid top
Gas.
When needing liquid level tube 26 to bounce back, opens and retract air valve 10, air intake control valve 3 is communicated with atmosphere at this time.Compression is empty
Gas retracts the retraction pressure regulator 12 on pipeline 16 through air pressure and enters adjusting cavity of resorption 27, and air pressure is adjusted by retraction pressure regulator 12
Section.Compressed air opens liquid control valve 4 by shuttle valve 9 simultaneously, and the control epicoele of master cylinder 1 passes through air inlet pipe 13 and big gas phase
It is logical.Regulating piston 28 is pushed by air pressure in adjusting cavity of resorption 27 and liquid level tube 26 moves up, liquid level tube 26 is retracted into origin position, adjusts
The control cavity of resorption that the liquid in epicoele 20 returns to master cylinder 1 is saved, the control of master cylinder 1 mobile by hydraulic drive propelling piston 2
Upper intracavitary gas is discharged by air inlet pipe 13.This process is also hydraulic-oleo-pneumatic process of air pressure-, only and liquid level tube
Fluid traffic direction is opposite when 26 stretching.
When inflator head 25 needs to lock liquid level tube 26 according to vehicle, liquid control valve 4 is closed.Inflator head 25 evacuate and
During filling, the liquid 23 in oil can 21 is filled to when full of oil can 21, the reaction force of liquid 23 can act on liquid level
It on pipe 26 and is transmitted on regulating piston 28, due to the liquid closing of 28 top of regulating piston adjusted in epicoele 20, forms envelope
The fluid space closed, since liquid is incompressible, liquid level tube 26 will not be because of external force generation change in location, 26 locking of liquid level tube, this
Sample solves the problems, such as that liquid level tube 26 is inaccurate by filling pressure active position or moves repeatedly.Regulating piston 28 can be according to outer set
The information that displacement sensor 19 is fed back controls liquid control valve 4 at an arbitrary position and closes, makes the locking at an arbitrary position of liquid level tube 26,
Realize the stepless adjustable of liquid level tube 26.
The present invention is using the liquid filled as driving medium, by liquid line and control valve, for oil can 21
Interior filling medium is introduced into intracavitary under the control of master cylinder 1 by liquid supplementation pipe by make-up valve 7, and liquid lacks in master cylinder 1
Or supplement liquid is given when updating.Use filling medium as driving liquid, can avoid using other liquid mediums to filling vehicle
Bring pollution effect.If intracavitary liquid lacks a certain range under the control of master cylinder 1, driving propelling piston 2 is downward
The super normal range (NR) of moving distance can trigger liquid level sensor 8, and liquid is reduced in warning note master cylinder 1, need artificial fluid infusion.
Fluid infusion will operate under manual mode, and the air intake control valve 3 of control system, retraction air valve 10, liquid control valve 4 are at this time
Closed state, manual operation open dispenser pump, open make-up valve 7, and liquid can enter under pump pressure effect through outlet tube 14
In the sap cavity of master cylinder 1, pushes propelling piston 2 mobile to control epicoele, until pushing propelling piston 2 to stop, completing fluid infusion
Journey.
Above-mentioned control system is connect with the inflator head 25 of filling equipment, the liquid line exported by control device, driving
The movement of execution cylinder in inflator head, drives the liquid level tube 26 of inflator head mobile, and by executing the external displacement sensing on cylinder
19 detecting distance of device realizes the accurate control and locking of liquid level tube 26.Inflator head 25 has independent evacuation, filling, resorption channel,
It can be connected with automotive system liquid storage tank mouth, realization vacuumizes and fill liquid.The course of work of inflator head is as described below:
After inflator head 25 is clamped on vehicle oil can 21, equipment first passes through vacuum lead or suction pipe 18 to vehicle oil
Pot 21 vacuumizes, and vacuumizes after meeting setting index, closes the vacuum pumping valve in inflator head 25.Starting filling carries out, and opening is filled
The liquid of charging valve (being not drawn into figure) on head 25, filling enters oil can 21 by the filler line 17 on liquid level tube 26, fills
Liquid can fill oil can 21 or be higher than upper fluid level limit 24 when note.After the completion of filling, charging valve is closed；Then starting resorption into
Journey, extra liquid is sucked back into extra liquid and sets through suction pipe 18 by the return suction system pumpback of filing provision in oil can 21
Standby interior, the liquid exported lower than liquid level tube 26 will be unable to suck back, namely play the role of accurately controlling liquid level.Resorption process terminates
Afterwards, filling whole process is completed, and inflator head 25 can be removed from vehicle oil can 21, completes whole process.
The present invention is driven using liquids and gases compound action, and the liquid level tube for controlling inflator head realizes hydraulic stretching and air pressure
It retracts, it is accurate to realize liquid level tube any position locking by the position sensor feedback location information in inflator head.According to this hair
Bright control method, compressed air only need common pressure reducing valve to control pressure, do not need to be adjusted using expensive proportioning valve
Air pressure is saved, cost is not only saved, but also evaded the failure of electric Proportion valve, improves reliability.
Claims (12)
1. the accuracy control method of a kind of inflator head liquid level tube position, it is characterized in that: using the compound work of the double media of liquids and gases
With driving, stretches out the liquid level tube in inflator head by hydraulic control, retracted by pressure control, make liquid level tube in any position
Locking.
2. the accuracy control method of inflator head liquid level tube according to claim 1 position, it is characterized in that: the liquid level tube is stretched
It is all that side is pushed by hydraulic or air pressure out and during retraction, the other side is hindered by air pressure or hydraulic thrust.
3. the accuracy control method of inflator head liquid level tube according to claim 1 position, it is characterized in that: the liquid level tube is stretched
Hydraulic coupling when out is to push to generate by air pressure.
4. the accuracy control method of inflator head liquid level tube according to claim 1 position, it is characterized in that: the liquid level tube position
The detection set is realized by the position sensor being arranged in inflator head.
5. the accuracy control method of inflator head liquid level tube according to claim 1 position, it is characterized in that: the liquid level tube is logical
When crossing hydraulic control stretching, the liquid level of hydraulic control liquid is generated by liquid level sensor monitoring, if control liquid reduction
Then supplemented.
6. the accuracy control method of inflator head liquid level tube according to claim 5 position, it is characterized in that: the control liquid
Using liquid identical with filling liquid.
7. a kind of control system for realizing claim 1 the method, it is characterized in that: including the gentle compression and back of hydraulic drive pipeline
Pipeline；Hydraulic drive pipeline is used to connect the adjusting epicoele that cylinder is executed in inflator head, and air pressure retracts pipeline for connecting inflator head
The middle adjusting cavity of resorption for executing cylinder.
8. control system according to claim 7, it is characterized in that: being provided with external displacement sensing on the outside of the execution cylinder
Device.
9. control system according to claim 7, it is characterized in that: be provided on the hydraulic drive pipeline master cylinder, into
Tracheae and outlet tube；Propelling piston is provided in master cylinder, master cylinder inside division is control epicoele and control by propelling piston
Cavity of resorption；
It controls epicoele and connects air inlet pipe, be connected in air inlet pipe and stretch out pressure regulator and air intake control valve；Control cavity of resorption connection
Outlet tube, liquid control valve is provided on outlet tube, and liquid control valve connects the adjusting epicoele, the liquid control valve and shuttle
Valve connection, shuttle valve and air intake control valve and the air pressure retract piping connection.
10. control system according to claim 9, it is characterized in that: the outlet tube or control cavity of resorption and replenishing line connect
It connects, make-up valve and check valve is sequentially connected on replenishing line.
11. control system according to claim 9, it is characterized in that: being additionally provided with liquid level sensor on the master cylinder.
12. control system according to claim 7, it is characterized in that: the air pressure, which retracts, is connected with retraction pressure on pipeline
Adjuster and retraction air valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910602846.5A CN110272014A (en) | 2019-07-05 | 2019-07-05 | The accuracy control method and system of inflator head liquid level tube position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910602846.5A CN110272014A (en) | 2019-07-05 | 2019-07-05 | The accuracy control method and system of inflator head liquid level tube position |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110272014A true CN110272014A (en) | 2019-09-24 |
Family
ID=67962972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910602846.5A Pending CN110272014A (en) | 2019-07-05 | 2019-07-05 | The accuracy control method and system of inflator head liquid level tube position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110272014A (en) |
Cited By (1)
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| CN111646421A (en) * | 2020-04-02 | 2020-09-11 | 一汽奔腾轿车有限公司 | Collinear brake fluid level intelligent adjusting device and method for multiple vehicle types |
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