CN103123042A - Variable air-capacitor device - Google Patents

Variable air-capacitor device Download PDF

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Publication number
CN103123042A
CN103123042A CN2013100443522A CN201310044352A CN103123042A CN 103123042 A CN103123042 A CN 103123042A CN 2013100443522 A CN2013100443522 A CN 2013100443522A CN 201310044352 A CN201310044352 A CN 201310044352A CN 103123042 A CN103123042 A CN 103123042A
Authority
CN
China
Prior art keywords
piston
capacitor
cylinder
air
piston rod
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN2013100443522A
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Chinese (zh)
Inventor
戴佳宇
冷景平
徐炳辉
邢科礼
叶恒
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University of Shanghai for Science and Technology
Original Assignee
University of Shanghai for Science and Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Shanghai for Science and Technology filed Critical University of Shanghai for Science and Technology
Priority to CN2013100443522A priority Critical patent/CN103123042A/en
Publication of CN103123042A publication Critical patent/CN103123042A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a variable air-capacitor device. The variable air-capacitor device comprises a cylinder, a cylinder fixed seat, a piston, and a piston rod. A cylinder chamber is divided into a main working air-capacitor chamber and an auxiliary working air-capacitor chamber through the piston, a piston drive control device is used for driving the piston rod to move linearly, and then volume of the main working air-capacitor of the cylinder is controlled to be variable. The piston drive control device comprises a stepping motor, a motor driver, a drive actuating mechanism, a piston displacement real-time detection device and a main controller, wherein the drive actuating mechanism is a lead screw mechanism, the stepping motor coaxially rotates the lead screw, the piston displacement real-time detection device is a displacement sensor, and the displacement sensor is used for detecting linear movement displacement change of a connecting sliding block in real time. The variable air-capacitor device has the advantages of being capable of achieving accurate and quick adjustment of the volume, especially suitable for situations which need the air-capacitor to be accurate and variable in a pneumatic test, greatly shortening test time, improving efficiency, and safe and reliable.

Description

Variable air-capacitor device
Technical field
The present invention relates to a kind of volume adjustable container, particularly a kind of container that loads the accurate quick adjustment of gas volume that holds.
Background technique
air-capacitor is a kind of container that holds gas, a kind of base components of air-capacitor Chang Zuowei and being widely used in charger, existing air-capacitor comprises various pressurized containers, as leather bag, gas storage holder and expansion box etc., patent of invention ZL96498551.8 discloses gas containment and air feeder, comprise one with the gas storage container that can be installed in pressed gas of air supply opening, can be connected with air supply opening with the air feeder by the second end air feed at first end, and the control gear that can control air feed speed, gas container is the pressurized container of an annular, this container comprises the circular casing of a metal, the load of drawing that is tied with the high-tensile non-metallic fiber on the surface of shell is born layer, fiber on circular casing aligns along warp-wise basically.The disclosed air-capacitor of patent of invention ZL96498551.8 can be installed in the gas storage container of pressed gas, and its outside air feed speed is controlled, but can't realize the controlled adjusting to the gas storage container volume.
Nowadays be the air-capacitor of fixed volume mostly on market, along with the development of industrial automation and measuring technology, under given conditions, fixedly air-capacitor can not meet the demands.In pneumatic test, need air-capacitor accurately variable, but normally realize by frequent replacing air-capacitor, the test time is long, and efficient is low, and testing precision is also undesirable.
Summary of the invention
In order to solve the prior art problem, the object of the invention is to overcome the deficiency that prior art exists, a kind of variable air-capacitor device is provided, can bear high pressure, and can realize accurately adjustment rapidly of volume, needing in pneumatic test be particularly suitable for accurately variable situation of air-capacitor, the use of this device can avoid frequently changing the situation of air-capacitor, thereby greatly shorten the test time, raise the efficiency, safe and reliable.
Create purpose for reaching foregoing invention, the present invention adopts following technical proposals:
a kind of variable air-capacitor device, comprise cylinder, the cylinder fixed base, piston and piston rod, cylinder is fixedly connected with the cylinder fixed base by its cylinder wall, the two ends of piston rod are respectively clutch end and passive traction end, the cylinder wall that the clutch end of piston rod passes cylinder is fixedly connected with piston, piston makes the cylinder cavity be separated into main work air-capacitor chamber and back work chamber, main work air-capacitor chamber is the chamber of piston-rodless or the chamber that piston rod is arranged, the back work chamber is the chamber that piston rod is arranged, order about piston rod by the piston actuated control gear and drive piston linear slide in the cylinder cavity, and then the variable volume of the main work air-capacitor chamber of control cylinder, the piston actuated control gear comprises stepper motor, motor driver, drive actuator, piston displacement real-time detection apparatus and master controller, stepper motor is fixedly installed on the cylinder fixed base, driving actuator is screw mechanism, the nut of screw mechanism forms connection sliding block, connection sliding block is fixedly connected with the passive traction end of piston rod, the screw mandrel of screw mechanism and piston rod are to be arrangeding in parallel, the power output main shaft coaxial transmission screw mandrel of stepper motor, screw mechanism changes into the straight line motion of connection sliding block with the rotatablely moving of main shaft of power output of stepper motor, make connection sliding block directly draw piston rod and do straight line motion, the movement direction of the clockwise and anticlockwise control connection slide block of stepper motor, the piston displacement real-time detection apparatus is displacement transducer, the straight line motion change in displacement of displacement transducer Real-Time Monitoring connection sliding block, the signal output part of displacement transducer is connected with the signal receiving end of master controller, the command signal transmitting terminal of master controller is connected with the command signal receiving terminal of motor driver, motor driver is controlled the Driving Stepping Motor running, be transmission main shaft rotation angle and the sense of rotation of Driving Stepping Motor, thereby drive screw mechanism and make piston rod, make the cavity volume of main work air-capacitor chamber adjust to desired volume.
Above-mentioned piston actuated control gear preferably outreaches input-output equipment, i.e. display screen and keyboard, and the signal output part of master controller is connected with the signal receiving end of display screen, and the input signal receiving terminal of master controller is connected with the keyboard input signal transmitting terminal.
Above-mentioned cylinder fixed base preferably includes fixed pedestal, front screen and backboard, and front screen is fixedly connected with installation with fixed pedestal respectively with backboard, and front screen and backboard are fixedly clamped to before and after cylinder, and cylinder is fixedly installed on the cylinder fixed base.
Above-mentioned piston rod preferably is fixedly connected with connection sliding block by thread mechanism respectively with displacement transducer.
Above-mentioned master controller preferably adopts single-chip microcomputer.
The present invention has following apparent outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1. the variable air-capacitor device of the present invention can carry out the rapid accurate adjustment of volume, and can bear high pressure, can shorten test period or generating period in pneumatic test or automatic production, reduces costs, and makes profit maximization;
2. the stepper motor of the variable air-capacitor device of the present invention and displacement transducer adopt the method for closed loop control, and control accuracy is improved, and the response time shortens, and antijamming capability strengthens;
3. the variable air-capacitor device of the present invention can keep highi degree of accuracy under high pressure gas environment, and stability is very high;
4. the components and parts costs such as the single-chip microcomputer of the variable air-capacitor device of the present invention, stepper motor, displacement transducer are low, and stable performance is safe and reliable, and servo system is good in economic efficiency relatively.
Description of drawings
Fig. 1 is the structural representation of the variable air-capacitor device of the embodiment of the present invention one.
Fig. 2 is the signal transmission relation schematic diagram of the variable air-capacitor device of the embodiment of the present invention one.
Fig. 3 is the control principle drawing of the variable air-capacitor device of the embodiment of the present invention one.
Fig. 4 is the control flow chart of the variable air-capacitor device of the embodiment of the present invention one.
Fig. 5 be the piston rod of the embodiment of the present invention two and displacement transducer respectively with connection sliding block Placement schematic diagram.
Fig. 6 is the test system schematic diagram that the variable air-capacitor device of the embodiment of the present invention three is used in the leak-testing of cylinder.
Embodiment
Details are as follows for the preferred embodiments of the present invention:
Embodiment one:
referring to Fig. 1~4, the variable air-capacitor device of the present embodiment comprises cylinder 2, the cylinder fixed base, piston 11 and piston rod 4, cylinder 2 is fixedly connected with the cylinder fixed base by its cylinder wall 3, the two ends of piston rod 4 are respectively clutch end and passive traction end, the cylinder wall 3 that the clutch end of piston rod 4 passes cylinder 2 is fixedly connected with piston 11, piston 11 makes cylinder 2 cavitys be separated into main work air-capacitor chamber A and back work chamber B, main work air-capacitor chamber A is the chamber of piston-rodless 4 or the chamber that piston rod 4 is arranged, back work chamber B is the chamber that piston rod 4 is arranged, order about piston rod 4 by the piston actuated control gear and drive piston 11 linear slide in cylinder 2 cavitys, and then the variable volume of the main work air-capacitor chamber A of control cylinder 2, the piston actuated control gear comprises stepper motor 9, motor driver 13, drive actuator, piston displacement real-time detection apparatus and master controller 12, stepper motor 9 is fixedly installed on the cylinder fixed base, driving actuator is screw mechanism, the nut of screw mechanism forms connection sliding block 6, connection sliding block 6 is fixedly connected with the passive traction end of piston rod 4, screw mandrel 7 and the piston rod 4 parallel to an axis settings of screw mechanism, the power output main shaft coaxial transmission screw mandrel 7 of stepper motor 9, screw mechanism changes into the straight line motion of connection sliding block 6 with the rotatablely moving of main shaft of power output of stepper motor 9, make connection sliding block 6 directly draw piston rod 4 and do straight line motion, the movement direction of the clockwise and anticlockwise control connection slide block 6 of stepper motor 9, the piston displacement real-time detection apparatus is displacement transducer 8, the straight line motion change in displacement of displacement transducer 8 Real-Time Monitoring connection sliding blocks 6, the signal output part of displacement transducer 8 is connected with the signal receiving end of master controller 12, master controller 12 is single-chip microcomputer, the command signal transmitting terminal of master controller 12 is connected with the command signal receiving terminal of motor driver 13, motor driver 13 is controlled Driving Stepping Motor 9 runnings, be transmission main shaft rotation angle and the sense of rotation of Driving Stepping Motor 9, thereby drive screw mechanism and make piston rod 4, make the cavity volume of main work air-capacitor chamber A adjust to desired volume.In the present embodiment, referring to Fig. 1 ~ Fig. 3, when stepper motor 9 rotations, drive connection sliding block 6 by screw mandrel 7 and move, connection sliding block 6 drives piston rod 4, and piston 11 motions change main work air-capacitor chamber A volume, the position of displacement transducer 8 monitoring connection sliding blocks 6.Like this, the determining positions of connection sliding block 6 volume of main work air-capacitor chamber A, and the movement of connection sliding block 6 is controlled by stepper motor 9, the position of connection sliding block 6 is detected by displacement transducer 8.The accurate mobile implementation method of connection sliding block 6 is mainly utilized stepper motor 9 rotating shafts to rotate and is controlled, and its transmission main shaft often turns around, and connection sliding block 6 can rotate corresponding distance.The direction that slide block moves is controlled in the clockwise and anticlockwise of stepper motor 9.And stepper motor 9 rotation angles and sense of rotation are to be controlled by stepper motor driver, master controller 12 single-chip microcomputers are sent pulse signal and direction driving signal into motor driver, instruction turns over corresponding angle to motor driver control step motor 9 according to direction, thereby driving ball screw 7 advances or retreats displacement of targets, main work air-capacitor chamber A just is adjustable to the volume of requirement, thereby has realized the accurate movement of connection sliding block 6 and the accurate adjustment of main work air-capacitor chamber A volume.
In the present embodiment, pulse signal is mainly the given of number of pulses, and the present embodiment uses single-chip microcomputer to send to stepper motor driver.When single-chip microcomputer corresponded to corresponding connection sliding block 6 position by processing volume with main work air-capacitor chamber A, the position that connection sliding block 6 detected with displacement transducer 8 compared, and calculates the umber of pulse that will send.As shown in Figure 4, single-chip microcomputer is sent out pulse according to following steps: first establish low level at the single-chip processor i/o mouth, and------time-delay---establishes low level to establish high level, and pulse out; At first timer is set interrupts, send out pulse, the number of for example packing in order to determine when, this digital subtracting is reduced to 0 interruption, has just decided a time, to this time execution article one, several pulses are sent in judgement simultaneously, when reducing to 0, illustrate that the umber of pulse of sending out has distributed.
The variable air-capacitor device of the present embodiment is to be promoted the piston rod 4 of cylinders 2 by a stepper motor 9 from structural principle, thereby makes the main work air-capacitor chamber A of cylinder 2 become the air-capacitor of variable-volume, and cylinder 2 can adopt single-rod piston cylinder or through-rod piston cylinder.When cylinder 2 adopted the single-rod piston cylinder, main work air-capacitor chamber A was rodless cavity; When cylinder 2 adopted the through-rod piston cylinder, main work air-capacitor chamber A was rod chamber.The single-rod piston cylinder structure is simple, forms variable air-capacitor apparatus structure compact.Displacement transducer 8 can feed back rapidly the position of piston rod 4 accurately, and therefore, the variable air-capacitor device of the present embodiment can calculate rapidly main work air-capacitor chamber A volume, reaches the purpose of air-capacitor variable volume.The variable air-capacitor device of the present embodiment can accurately be adjusted rapidly volume, and can bear high pressure, can shorten test period or generating period in pneumatic test or automatic production, thereby greatly shortens test and production time, raises the efficiency, and is safe and reliable.
In the present embodiment, referring to Fig. 2, the piston actuated control gear outreaches input-output equipment, be display screen 14 and keyboard 15, the signal output part of master controller 12 is connected with the signal receiving end of display screen 14, and the input signal receiving terminal of master controller 12 is connected with keyboard 15 input signal transmitting terminals.In the present embodiment, realize friendly human-computer interaction function by input-output equipment, when the user inputs the air-capacitor volume of appointments by keyboard 15 to master controller 12 single-chip microcomputers, single-chip microcomputer can pass through processing data, with being presented at for information about on display screen 14 of the air-capacitor regulation and control of the main work air-capacitor chamber A that realizes.
In the present embodiment, referring to Fig. 1, the cylinder fixed base comprises fixed pedestal 10, front screen 1 and backboard 5, and front screen 1 is fixedly connected with installation with fixed pedestal 10 respectively with backboard 5,5 pairs of front screen 1 and backboards cylinder, 2 front and back are fixedly clamped, and cylinder 2 is fixedly installed on the cylinder fixed base.Make cylinder 2 and the firm connection of cylinder fixed base by simple clamping plate fixing, guarantee variable air-capacitor device stable operation.
Embodiment two:
The present embodiment and embodiment one are basic identical, and specialization is:
In the present embodiment, referring to Fig. 5, piston rod 4 is fixedly connected with connection sliding block 6 by thread mechanism 16 respectively with displacement transducer 8, adopts thread mechanism 16 assembly and disassemblies convenient, is convenient to assembling manufacturing, is easy to safeguard, and is easy to use.
Embodiment three:
The present embodiment and previous embodiment are basic identical, and specialization is:
In the present embodiment, referring to Fig. 6, variable air-capacitor application of installation is in the leak-testing of cylinder, because hope compensation air-capacitor and reference air-capacitor in test can be accurately adjustable fast, thereby reach the purpose of quick test, therefore, the variable air-capacitor device of previous embodiment can be realized this effect well, test when common air-capacitor being changed into the variable air-capacitor device of previous embodiment, can greatly shorten the test time, improve testing efficiency.In the present embodiment, the single-chip microcomputer of variable air-capacitor device can not only carry out the volume of air-capacitor to be controlled, and can also control solenoid valve by relay, can make the integrated degree of test event higher.The variable air-capacitor device of the present embodiment can accurately be adjusted rapidly volume, needing in pneumatic test to be particularly suitable for accurately variable situation of air-capacitor, and the use of this device can avoid frequently changing the situation of air-capacitor, thereby greatly shortens the test time, raises the efficiency.
The above is illustrated the embodiment of the present invention by reference to the accompanying drawings; but the invention is not restricted to above-described embodiment; can also make multiple variation according to the purpose of innovation and creation of the present invention; all according to technical solution of the present invention Spirit Essence and principle under make change, modification, substitute, combination, simplify; all should be the substitute mode of equivalence; as long as goal of the invention according to the invention, only otherwise deviate from know-why and the inventive concept of the variable air-capacitor device of the present invention, all belong to protection scope of the present invention.

Claims (9)

1. variable air-capacitor device, comprise cylinder (2), the cylinder fixed base, piston (11) and piston rod (4), described cylinder (2) is fixedly connected with described cylinder fixed base by its cylinder wall (3), the two ends of described piston rod (4) are respectively clutch end and passive traction end, the cylinder wall (3) that the clutch end of described piston rod (4) passes described cylinder (2) is fixedly connected with described piston (11), it is characterized in that: described piston (11) makes described cylinder (2) cavity be separated into main work air-capacitor chamber (A) and back work chamber (B), described main work air-capacitor chamber (A) is for the chamber of piston-rodless (4) or the chamber of piston rod (4) is arranged, described back work chamber (B) is for there being the chamber of piston rod (4), order about described piston rod (4) by the piston actuated control gear and drive described piston (11) linear slide in described cylinder (2) cavity, and then control the variable volume of the main work air-capacitor chamber (A) of described cylinder (2), described piston actuated control gear comprises stepper motor (9), motor driver (13), drive actuator, piston displacement real-time detection apparatus and master controller (12), described stepper motor (9) is fixedly installed on described cylinder fixed base, described driving actuator is screw mechanism, the nut of described screw mechanism forms connection sliding block (6), described connection sliding block (6) is fixedly connected with the passive traction end of described piston rod (4), the screw mandrel of described screw mechanism (7) and described piston rod (4) parallel to an axis setting, the power output described screw mandrel of main shaft coaxial transmission (7) of described stepper motor (9), described screw mechanism changes into the straight line motion of described connection sliding block (6) with the rotatablely moving of main shaft of power output of described stepper motor (9), make described connection sliding block (6) directly draw described piston rod (4) and do straight line motion, the movement direction of described connection sliding block (6) is controlled in the clockwise and anticlockwise of described stepper motor (9), described piston displacement real-time detection apparatus is displacement transducer (8), the straight line motion change in displacement of the described connection sliding block of described displacement transducer (8) Real-Time Monitoring (6), the signal output part of described displacement transducer (8) is connected with the signal receiving end of described master controller (12), the command signal transmitting terminal of described master controller (12) is connected with the command signal receiving terminal of described motor driver (13), described motor driver (13) is controlled and is driven described stepper motor (9) running, namely drive transmission main shaft rotation angle and the sense of rotation of described stepper motor (9), thereby drive described screw mechanism and make piston rod (4), make the cavity volume of described main work air-capacitor chamber (A) adjust to desired volume.
2. variable air-capacitor device according to claim 1, it is characterized in that: described piston actuated control gear outreaches input-output equipment, be display screen (14) and keyboard (15), the signal output part of described master controller (12) is connected with the signal receiving end of described display screen (14), and the input signal receiving terminal of described master controller (12) is connected with described keyboard (15) input signal transmitting terminal.
3. variable air-capacitor device according to claim 1 and 2, it is characterized in that: described cylinder fixed base comprises fixed pedestal (10), front screen (1) and backboard (5), described front screen (1) is fixedly connected with installation with fixed pedestal (10) respectively with backboard (5), described front screen (1) and backboard (5) are fixedly clamped to before and after described cylinder (2), and described cylinder (2) is fixedly installed on described cylinder fixed base.
4. variable air-capacitor device according to claim 1 and 2, it is characterized in that: described piston rod (4) is fixedly connected with described connection sliding block (6) by thread mechanism (16) respectively with described displacement transducer (8).
5. variable air-capacitor device according to claim 3, it is characterized in that: described piston rod (4) is fixedly connected with described connection sliding block (6) by thread mechanism (16) respectively with described displacement transducer (8).
6. variable air-capacitor device according to claim 1 and 2, it is characterized in that: described master controller (12) is single-chip microcomputer.
7. variable air-capacitor device according to claim 3, it is characterized in that: described master controller (12) is single-chip microcomputer.
8. variable air-capacitor device according to claim 4, it is characterized in that: described master controller (12) is single-chip microcomputer.
9. variable air-capacitor device according to claim 5, it is characterized in that: described master controller (12) is single-chip microcomputer.
CN2013100443522A 2013-02-05 2013-02-05 Variable air-capacitor device Pending CN103123042A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105292169A (en) * 2015-11-30 2016-02-03 南车株洲电力机车有限公司 Braking device
CN105987724A (en) * 2015-02-26 2016-10-05 顺力西科技股份有限公司 Test tool for respirator
CN106289610A (en) * 2016-08-05 2017-01-04 合肥工业大学 A kind of constant volume quantitatively expands force checking device and detection method
CN109027658A (en) * 2018-07-25 2018-12-18 李建芳 A kind of natural gas bottle of nano material preparation
CN113740407A (en) * 2021-11-02 2021-12-03 南京柠檬科技发展有限公司 Sodium ion concentration analysis measuring equipment

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US4876906A (en) * 1986-11-20 1989-10-31 Sundstrand Corporation Non-jamming actuator system
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JPH10216229A (en) * 1997-02-12 1998-08-18 Fuji Electric Co Ltd Clutch mechanism of syringe pump
CN2429716Y (en) * 2000-07-14 2001-05-09 杭州新纪元消防科技有限公司 Pressure tank valve
CN101294751A (en) * 2008-05-23 2008-10-29 大连理工大学 Gas capacity variable frequency modulation self-excitation oscillation jet stream refrigerating machine
CN101915700A (en) * 2010-07-29 2010-12-15 大连理工大学 Non-outflow type gas pressure/volume control device

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Publication number Priority date Publication date Assignee Title
US4876906A (en) * 1986-11-20 1989-10-31 Sundstrand Corporation Non-jamming actuator system
DE4242601A1 (en) * 1992-12-17 1994-06-30 Eisenbach B Rotox Gmbh Fluid power cylinder with adjustable stroke
JPH10216229A (en) * 1997-02-12 1998-08-18 Fuji Electric Co Ltd Clutch mechanism of syringe pump
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987724A (en) * 2015-02-26 2016-10-05 顺力西科技股份有限公司 Test tool for respirator
CN105292169A (en) * 2015-11-30 2016-02-03 南车株洲电力机车有限公司 Braking device
CN105292169B (en) * 2015-11-30 2018-08-03 南车株洲电力机车有限公司 A kind of brake apparatus
CN106289610A (en) * 2016-08-05 2017-01-04 合肥工业大学 A kind of constant volume quantitatively expands force checking device and detection method
CN109027658A (en) * 2018-07-25 2018-12-18 李建芳 A kind of natural gas bottle of nano material preparation
CN113740407A (en) * 2021-11-02 2021-12-03 南京柠檬科技发展有限公司 Sodium ion concentration analysis measuring equipment

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Application publication date: 20130529