CN102003919B - Novel gas-liquid mixed power ejection device - Google Patents
Novel gas-liquid mixed power ejection device Download PDFInfo
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- CN102003919B CN102003919B CN 201010524849 CN201010524849A CN102003919B CN 102003919 B CN102003919 B CN 102003919B CN 201010524849 CN201010524849 CN 201010524849 CN 201010524849 A CN201010524849 A CN 201010524849A CN 102003919 B CN102003919 B CN 102003919B
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Abstract
A novel gas-liquid mixed power ejection device comprises a hydraulic cylinder, an accumulator and a main valve, wherein the lower chamber of the hydraulic cylinder is communicated with the gas part of the accumulator; the gas part of the accumulator is provided with a pressure sensor; the liquid part of the accumulator is connected with the oil outlet of a first 2D digital valve and the oil inlet of the main valve; the oil outlet of the main valve is communicated with the oil port of the upper chamber of the hydraulic cylinder; the oil inlet of the first 2D digital valve is connected with a hydraulic power supply; the oil outlet of the first 2D digital valve is communicated with the oil inlet of a second 2D digital valve and the oil inlet of a third 2D digital valve; the oil outlet of the second 2D digital valve is communicated with the control oil port of the main valve; the oil outlet of the third 2D digital valve is communicated with the oil port of the upper chamber of the hydraulic cylinder; and the pressure sensor, the first 2D digital valve, the second 2D digital valve and the third 2D digital valve are all connected with a digital valve controller which is used to control the on/off of each 2D digital valve. The novel gas-liquid mixed power ejection device has many functions, high efficiency and good safety.
Description
Technical field
The present invention relates to the catapult-launching gear field, especially a kind of gas-liquid mixed power catapult-launching gear.
Background technique
From ejection energy, catapult-launching gear is divided into big gun formula, hydraulic type, compressed air type, hydraulic-pneumatic formula, gas combustion, fuel gas-steam formula and electromagnetic type etc.The application of ejection mechanism is special, and is strict to the weight of system, dynamic response performance etc., both at home and abroad always all at the positive catapult-launching gear of development superior performance.Traditional catapult-launching gear function singleness, efficient are low.
Summary of the invention
In order to overcome the deficiency that function singleness, efficient are low, Security is relatively poor of existing existing catapult-launching gear, the invention provides a kind of feature richness, high, the good gas-liquid mixed power catapult-launching gear of Security of efficient.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of gas-liquid mixed catapult-launching gear, described gas-liquid mixed catapult-launching gear comprises oil hydraulic cylinder, accumulator, main valve, the one 2D digital valve, the 2nd 2D digital valve, the 3rd 2D digital valve, pressure transducer and hydraulic power supply, described oil hydraulic cylinder cavity of resorption partly is communicated with accumulator gas, the gas part setting pressure sensor of described accumulator, described accumulator liquid part is connected with the oil outlet of a 2D digital valve, described accumulator liquid part is connected with the filler opening of main valve, the oil outlet of described main valve is communicated with the hydraulic fluid port of oil hydraulic cylinder epicoele, the filler opening of a described 2D digital valve is connected with hydraulic power supply, the filler opening of the oil outlet of a described 2D digital valve and described the 2nd 2D digital valve, the filler opening of the 3rd 2D digital valve all is communicated with, the oil outlet of described the 2nd 2D digital valve is communicated with the control port of main valve, the oil outlet of described the 3rd 2D digital valve is communicated with the hydraulic fluid port of oil hydraulic cylinder epicoele, described pressure transducer, the one 2D digital valve, the 2nd 2D digital valve all is connected with the Digital Valve Controller that is used for control 2D digital valve switch with the 3rd 2D digital valve.
Further, described oil hydraulic cylinder is divided into epicoele and cavity of resorption, and the section area of described oil hydraulic cylinder cavity of resorption piston rod is greater than epicoele piston rod section area, and described oil hydraulic cylinder cavity of resorption piston rod inside is empty, described oil hydraulic cylinder cavity of resorption and cavity of resorption piston rod internal communication.
Further again, a described 2D digital valve, the 2nd 2D digital valve and the 3rd 2D digital valve are three-way valve and are installed on the main valve, and described main valve is installed on the accumulator, and described pressure transducer is installed on the accumulator.
Technical conceive of the present invention is: gas-hydraulic hybrid ejection system atmosphere storage energy, use the liquid transfer energy, have that the quality of launching is large, speed is fast, can not produce the signals such as light, sound, heat, smog, the advantages such as property safe and out of sight is good, good economy performance, strong adaptability simultaneously.Spool valve pocket one end of 2D digital valve has the spiral chute cooperating structure, thereby Spool rotating is so that poppet shaft produces axial displacement to the hydraulic coupling disequilibrium, the size of control valve port; The 2D digital valve adopts the rotation of stepper motor driven valve core, and is simple in structure, safe and reliable, such as the patent No. is: 200710160253.5 and 200910153014.6 in first to file.The present invention uses the 2D digital valve as crucial controlling component, the 2D digital valve is used (described 2D digital valve comprises a filler opening, an oil outlet and a return opening) as switch valve, propose a kind of rational in infrastructure, control flexibly catapult-launching gear, given full play to the advantage of gas-liquid mixed ejection system.
Gassy in oil hydraulic cylinder cavity of resorption and the cavity of resorption piston rod, and partly be connected with accumulator gas, one, hydraulic cylinder piston rod not bringing onto load slowly stretch out, connect simultaneously three 2D digital valve, the 2nd 2D digital valve control valve core of main valve pressure at two ends balance, main valve is closed, and fluid enters the oil hydraulic cylinder epicoele by the 3rd 2D digital valve, gas in the compression hydraulic cylinder cavity of resorption realizes that piston rod slowly stretches out; Two, the hydraulic cylinder piston rod band carries retraction, make the 3rd 2D digital valve switch to oil circuit, hydraulic power supply passes through a 2D digital valve to the accumulator topping up, while compress energy storage device gas, because accumulator gas is connected with the oil hydraulic cylinder cavity of resorption, move on the gas push piston rod, realize that the piston rod band carries retraction; Three, piston rod ejects fast, pressure transducer detects the accumulator gas pressure, when pressure reaches setting value, the one 2D digital valve is closed, the 2nd 2D digital valve switches to oil circuit, and the 3rd 2D digital valve switches to in-line, and this moment, fluid promoted main valve open, accumulator fluid enters the oil hydraulic cylinder epicoele simultaneously by main valve and the 3rd 2D digital valve, and the pushing piston bar ejects fast; Four, piston rod reclaims, and first and second 2D digital valve switches to in-line, and the 3rd 2D digital valve switches to oil circuit, realizes that piston rod reclaims, and whole ejection process finishes.
Benefit of the present invention is mainly manifested in: 1, realize a kind of multiple functional, performance is outstanding, automaticity is high catapult-launching gear; 2, gas and the connection of accumulator gas in oil hydraulic cylinder cavity of resorption and the cavity of resorption piston rod are so that oil hydraulic cylinder cavity of resorption and the accumulator connecting pipeline is thin and damping is little; 3, launch before, oil hydraulic cylinder cavity of resorption gas acts on piston, makes piston rod be in all the time pull-up state, security of system is good; 4, rationally utilized system space, so that whole catapult-launching gear is lightweight, volume is little, compact structure.
Description of drawings
Fig. 1 is the principle schematic of gas-liquid mixed power catapult-launching gear of the present invention.
Fig. 2 is the Digital Valve Controller principle schematic of gas-liquid mixed power catapult-launching gear of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
See figures.1.and.2, a kind of gas-liquid mixed catapult-launching gear, described gas-liquid mixed catapult-launching gear comprises oil hydraulic cylinder 8, accumulator 3, main valve 10, the one 2D digital valve 4, the 2nd 2D digital valve 11, the 3rd 2D digital valve 9, pressure transducer 2 and hydraulic power supply 1, described oil hydraulic cylinder cavity of resorption partly is communicated with accumulator 3 gases, the gas part setting pressure sensor 2 of described accumulator 3, described accumulator 3 liquid part is connected with the oil outlet of a 2D digital valve 4, described accumulator 3 liquid part is connected with the filler opening of main valve 10, the oil outlet of described main valve 10 is communicated with the hydraulic fluid port of oil hydraulic cylinder 8 epicoeles, the filler opening of a described 2D digital valve 4 is connected with hydraulic power supply 1, the filler opening of the oil outlet of a described 2D digital valve 4 and described the 2nd 2D digital valve 11, the filler opening of the 3rd 2D digital valve 9 all is communicated with, the oil outlet of described the 2nd 2D digital valve 11 is communicated with the control port of main valve 10, the oil outlet of described the 3rd 2D digital valve 9 is communicated with the hydraulic fluid port of oil hydraulic cylinder epicoele, described pressure transducer 2, the one 2D digital valve 4, the 2nd 2D digital valve 11 all is connected with the Digital Valve Controller 5 that is used for control 2D digital valve switch with the 3rd 2D digital valve 9.
Described oil hydraulic cylinder 8 is divided into epicoele and cavity of resorption, described oil hydraulic cylinder 8 cavity of resorption gassies, described oil hydraulic cylinder 8 cavity of resorption piston rods 6 are also gassies of hollow, have aperture 7 on the described oil hydraulic cylinder 8 cavity of resorption piston rods 6 so that piston rod 6 interior gases are communicated with oil hydraulic cylinder 8 cavity of resorption gases, described oil hydraulic cylinder 8 cavity of resorptions are communicated with accumulator 3 gases;
With reference to Fig. 2, described Digital Valve Controller 5 is made of SCM system, comprises for the data acquisition module of Real-time Collection accumulator gas pressure signal and driver module and the input/output module of control figure threshold switch.
Described gas-liquid catapult-launching gear is realized following four kinds of motions, one, piston rod 6 not bringing onto load slowly stretch out, Digital Valve Controller 5 powers on simultaneously and connects three 2D digital valve, the 2nd 2D digital valve 11 control main valves 10 spool pressure at two ends balances, main valve 10 is closed, fluid enters oil hydraulic cylinder 8 epicoeles by the 3rd 2D digital valve 9, and gas in compression hydraulic cylinder 8 cavity of resorptions realizes that piston rod 6 slowly stretches out; Two, piston rod 6 bands carry retraction, make the 3rd 2D digital valve 9 switch to oil circuit, hydraulic power supply 1 is by 4 pairs of accumulator 3 topping ups of a 2D digital valve, while compress energy storage device 3 gases, because accumulator 3 gases are connected with oil hydraulic cylinder 8 cavity of resorptions, gas pressure raises and also moves on the pushing piston bar 6, realizes that piston rod 6 bands carry retraction; Three, piston rod 6 ejects fast, pressure transducer 2 detects accumulator 3 gas pressures and gives Digital Valve Controller 5 with pressure signal, when pressure reaches setting value, Digital Valve Controller 5 is closed a 2D digital valve 4, the 2nd 2D digital valve 11 switches to oil circuit, the 3rd 2D digital valve 9 switches to in-line, this moment main valve 10 spool pressure at two ends disequilibriums, valve core movement makes main valve open, accumulator 3 fluid enter oil hydraulic cylinder 8 epicoeles simultaneously by main valve 10 and the 3rd 2D digital valve 9, and pushing piston bar 6 ejects fast; Four, piston rod 6 reclaims, and a 2D digital valve 4 and the 2nd 2D digital valve 11 switch to in-line, and the 3rd 2D digital valve 9 switches to oil circuit, realizes that piston rod 6 reclaims, and whole ejection process finishes.
Claims (3)
1. gas-liquid mixed power catapult-launching gear, it is characterized in that: described gas-liquid mixed catapult-launching gear comprises oil hydraulic cylinder, accumulator, main valve, the one 2D digital valve, the 2nd 2D digital valve, the 3rd 2D digital valve, pressure transducer and hydraulic power supply, described oil hydraulic cylinder cavity of resorption partly is communicated with accumulator gas, the gas part setting pressure sensor of described accumulator, described accumulator liquid part is connected with the oil outlet of a 2D digital valve, described accumulator liquid part is connected with the filler opening of main valve, the oil outlet of described main valve is communicated with the hydraulic fluid port of oil hydraulic cylinder epicoele, the filler opening of a described 2D digital valve is connected with hydraulic power supply, the filler opening of the oil outlet of a described 2D digital valve and described the 2nd 2D digital valve, the filler opening of the 3rd 2D digital valve all is communicated with, the oil outlet of described the 2nd 2D digital valve is communicated with the control port of main valve, the oil outlet of described the 3rd 2D digital valve is communicated with the filler opening of oil hydraulic cylinder epicoele, described pressure transducer, the one 2D digital valve, the 2nd 2D digital valve all is connected with the Digital Valve Controller that is used for control 2D digital valve switch with the 3rd 2D digital valve.
2. gas-liquid mixed power catapult-launching gear as claimed in claim 1, it is characterized in that: described oil hydraulic cylinder is divided into epicoele and cavity of resorption, the section area of described oil hydraulic cylinder cavity of resorption piston rod is greater than epicoele piston rod section area, described oil hydraulic cylinder cavity of resorption piston rod inside is empty, described oil hydraulic cylinder cavity of resorption and cavity of resorption piston rod internal communication.
3. gas-liquid mixed power catapult-launching gear as claimed in claim 1 or 2, it is characterized in that: a described 2D digital valve, the 2nd 2D digital valve and the 3rd 2D digital valve are three-way valve and are installed on the main valve, described main valve is installed on the accumulator, and described pressure transducer is installed on the accumulator.
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CN102913491A (en) * | 2012-10-15 | 2013-02-06 | 浙江工业大学 | Quick high-pressure inflating system capable of recovering energy |
CN102921127B (en) * | 2012-11-09 | 2015-07-29 | 浙江工业大学 | Gases at high pressure launch water cannon |
CN103277353B (en) * | 2013-05-08 | 2015-06-10 | 燕山大学 | Unmanned aerial vehicle low impact catapult pneumatic and hydraulic system |
CN105351260B (en) * | 2015-11-19 | 2017-08-04 | 南京理工大学 | Gas-liquid mixed multistage high speed ejection device |
CN113357205B (en) * | 2021-06-16 | 2022-11-29 | 浙江大学 | Gas-liquid ejection servo actuating system |
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CN101666341A (en) * | 2009-09-25 | 2010-03-10 | 浙江工业大学 | High frequency large flow 2D digital servo valve |
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CN101666341A (en) * | 2009-09-25 | 2010-03-10 | 浙江工业大学 | High frequency large flow 2D digital servo valve |
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