CN110285109A - A kind of pneumatic control valve and gas-liquid pressure conversion control device - Google Patents
A kind of pneumatic control valve and gas-liquid pressure conversion control device Download PDFInfo
- Publication number
- CN110285109A CN110285109A CN201910443607.XA CN201910443607A CN110285109A CN 110285109 A CN110285109 A CN 110285109A CN 201910443607 A CN201910443607 A CN 201910443607A CN 110285109 A CN110285109 A CN 110285109A
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- 239000007788 liquid Substances 0.000 title claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 21
- 239000000446 fuel Substances 0.000 claims abstract description 7
- 239000000872 buffer Substances 0.000 claims abstract description 4
- 239000003921 oil Substances 0.000 claims description 150
- 239000010720 hydraulic oil Substances 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 7
- 238000003466 welding Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 9
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 239000002828 fuel tank Substances 0.000 description 5
- 239000010727 cylinder oil Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 241000130771 Tinea pellionella Species 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/202—Externally-operated valves mounted in or on the actuator
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of pneumatic control valve and gas-liquid pressure conversion control device, which drives two oil cylinders to be staggered movement by cylinder, oil suction and fuel-displaced carries out simultaneously.The present invention passes through the movement of Hysteresis for Pneumatic Control Valves air inlet pusher piston bar, being staggered for control oil cylinder fuel-displaced provides pressure, the oil pressure that goes out for the hydraulic system that oil cylinder is constituted is controlled by Pneumatic pressure valve regulation admission pressure, hydraulic accumulator buffers pressure fluctuation caused by gas-liquid pressure-boosting control device interruption fuel feeding caused by cylinder commutation moment, the moving components such as the piston of the device use aluminum alloy material, mitigate the weight of reciprocating member while proof strength as far as possible, promote sensitive reversing degree, pressure fluctuation is also reduced while reducing commutation energy consumption.
Description
Technical field
The invention belongs to gas-liquid conversion equipments, and in particular to a kind of pneumatic control valve and gas-liquid pressure conversion control device.
Background technique
The hydraulic system of numerically-controlled machine tool, which is substantially all using motor drive hydraulic pump, at present provides chuck, tailstock, knife
High pressure oil required for frame operates drives them to run.The advantages of this fuel system is that charge oil pressure is steady, and fuel feeding pulsation is small,
Noise is small, but it is also obvious that mainly there is following aspect the shortcomings that this fuel system: the first, Oil pump electrical machinery group occupies fuel tank
The space of upper cover plate is larger；The second, the weight of Oil pump electrical machinery group is larger；Third, the energy consumption of Oil pump electrical machinery group are larger, especially exist
Hydraulic system needs when pressure maintaining that oil pump needs endlessly to provide high pressure oil to chuck to maintain the clamping of chuck at this time,
Motor must full-speed operation always, this part energy wastes, although most of hydraulic stations now.
Automatic variable pump has been selected to reduce the energy consumption of system to a certain extent, but hydraulic system is always in high pressure shape
Operation, which is appointed, under state so needs to consume biggish power, and motor operational efficiency under underloading is also low.Biggish energy consumption also causes
The oil temperature of hydraulic system is easy to rise, and causes hydraulic system to have to take increasing volume of fuel tank, increases air cooler or water
The ancillary measure of cooler helps hydraulic system heat dissipation, so that hydraulic system size increases, the space for occupying lathe inner panel is more,
In addition lathe also needs to consider the heat dissipation design of hydraulic system, increases Machine Tool design workload.Apparatus for pressurizing gas, liquid can at present
To solve the energy consumption problem of hydraulic system, apparatus for pressurizing gas, liquid is driven by the reciprocating action of cylinder to provide required for machine tool running
High pressure oil, it only needs compressed air to be blown into the pressure that cylinder keeps certain when machine tool hydraulic system pressure maintaining,
Cylinder is failure to actuate, and the energy consumption of hydraulic system is minimum at this time, and system is not generated heat, and setting radiator is not needed, so hydraulic system
Size can significantly be reduced, but current apparatus for pressurizing gas, liquid, due to being that cylinder reciprocating motion carrys out oil suction, oil extraction, there are confessions
Oil pressure is unstable, and fuel feeding is pulsed larger disadvantage.
Summary of the invention
Goal of the invention: in view of the above shortcomings of the prior art, the first object of the present invention is to provide a kind of pneumatic control valve,
Second purpose is that a kind of gas-liquid pressure conversion control device is provided based on pneumatic control valve, improves the pressure of lathe and hydraulic device
The stationarity of output and realization efficiently control.
A kind of pneumatic control valve, including air valve front side cap, air valve shell, air valve cylinder sleeve, gas valve core, air valve rear side cover, gas
Cylinder back cavity, cylinder exhaust port, cylinder ante-chamber, air valve and air valve back cavity, when high pressure gas enters the air inlet pusher of pneumatic control valve
It takes offence after spool retreats to and limits, air inlet and cylinder back cavity are connected, and cylinder ante-chamber is communicated with cylinder exhaust port, and high pressure gas enters
Cylinder back cavity pusher take offence cylinder piston rod advance, cylinder piston rod driving；Hydraulic cylinder piston is pushed ahead, and oil cylinder is by internal liquid
Pressure oil ejection cylinder enters the hydraulic valve bank of lathe, and driving lathe oil cylinder operation, the pneumatic control valve further includes in cylinder
Front thimble is equipped at front limit, after cylinder piston contacts striker, high pressure gas control air-flow and air valve back cavity that air inlet communicates
It connects, high pressure gas enters air valve back cavity and gas valve core is pushed to advance to front limit, and high pressure gas is communicated with cylinder ante-chamber at this time, cylinder
Back cavity is communicated with cylinder exhaust port, and high pressure gas enters the retrogressing of cylinder ante-chamber pusher cylinder piston, and cylinder piston is in high pressure gas
Push it is lower return to cylinder after limit, cylinder piston rod drives two oil cylinder pistons toward post-tensioning at this time, when cylinder piston retreat to after
When limit, piston slap back center, the high pressure gas discharge of air valve back cavity, gas valve core retrogressing, cylinder piston repetition advance, so
Form movement in cycles.
Further, the pneumatic control valve includes being equipped with air valve cylinder sleeve in the cylinder junction of cylinder piston rod two sides
With the interface channel of cylinder, the interface channel is located at the contact of the two sides of gas valve core and the upper and lower and cylinder body of cylinder piston rod
Between wall.
Further, the interface channel of cylinder connection cylinder ante-chamber and cylinder exhaust when being limited after gas valve core is in
Mouthful, when being in front limit, connect cylinder back cavity and cylinder exhaust port.
A kind of gas-liquid pressure conversion control device, described device are combined setting by oil cylinder and cylinder, described device by
Oil cylinder and cylinder carry out composition setting, the oil cylinder include oil cylinder rear cover, preceding cylinder barrel, secondary piston, cylinder seal, in oil cylinder
Body, cylinder seal, rear cylinder barrel, piston rod and oil cylinder front cover；The cylinder includes air operated reversing valve, air cylinder front cover, cylinder cylinder
Cylinder, cylinder piston, striker and cylinder back cover, the intracorporal piston of cylinder tube are connect by piston rod with the cylinder piston in cylinder,
The secondary piston that the push-and-pull of the cylinder piston moves back and forth drive cylinder moves back and forth, the oil suction of finishing device and fuel-displaced movement,
For cylinder piston during limiting after moving to cylinder from cylinder front limit, the cylinder of piston rod and the setting of cylinder piston two sides is logical
Road and cylinder back cavity channel correspond to the pneumatic control valve cylinder back cavity that two sides are arranged up and down, cylinder exhaust port, cylinder ante-chamber, including
Control the open and-shut mode of air valve.
Further, the junction of the preceding cylinder barrel and rear cylinder barrel of the oil cylinder part is equipped with body in oil cylinder, close by oil cylinder
Seal closely connects adjacent two cylinder barrels and oil circuit, and body is additionally provided with oil sucting one-way valve and oil outlet one-way valve in the oil cylinder, right
Oil outlet and inlet port should be connected；
It covers after the oil cylinder front cover and oil cylinder and is communicated with the atmosphere equipped with venthole, the piston and front and rear covers of cylinder and oil cylinder
On be respectively arranged with sealing ring and guidance tape, separate each cavity.
The cylinder and oil cylinder is sealed fixation by welding or bolt, and joint is equipped with sealing ring；The dress
It sets and is additionally provided with apparatus for pressurizing gas, liquid, the apparatus for pressurizing gas, liquid includes pneumatic pressure-regulating valve and hydraulic accumulator；The gas
Dynamic pressure force regulating valve is located at the air inlet of apparatus for pressurizing gas, liquid, connect with the air inlet of cylinder, adjusts the admission pressure of cylinder, institute
State the oil outlet that hydraulic accumulator is located at device, buffer unit pressure fluctuation caused by cylinder commutation micro breaks fuel feeding.
The utility model has the advantages that compared with prior art, the present invention, which provides pneumatic control valve, can effectively control the flat of pressure output
Stability, and structure is simple, and the gas-liquid on a variety of distinct devices is suitble to control conversion；In addition, device provided by the present invention is big
Amplitude reduces energy consumption, simplifies hydraulic system, reduces hydraulic system energy consumption and calorific value, it is convenient to omit radiator, oil
The volume of case can also significantly reduce, it is only necessary to be capable of supply that the oil consumption of oil cylinder sweeping action；Second, the front and back of cylinder
Chamber makes full use of, and working efficiency promotes one times, former and later two oil cylinders are staggered, and oil suction is fuel-displaced can also to be avoided caused by failure of oil feed
A series of problems, in addition the buffer function of accumulator, the pressure fluctuation of gas-liquid pressure-boosting control device is already close to Oil pump electrical machinery group
Fuel-displaced pressure fluctuation；Third, the present invention do not need to provide three phase mains to hydraulic system, simplify machine tool applications circuit, mention
The safety of machine tool hydraulic system is risen.
Detailed description of the invention
Fig. 1 is gas-liquid pressure conversion control device structural schematic diagram of the present invention；
Fig. 2 be pneumatic control valve of the present invention in front limit when structural schematic diagram；
Fig. 3 is structural schematic diagram when limiting after being in of pneumatic control valve of the present invention；
Specific embodiment
It is further with attached drawing combined with specific embodiments below in order to which technical solution disclosed in this invention is described in detail
It illustrates.
For the defect of traditional gas-liquid control device or apparatus for pressurizing gas, liquid, a kind of gas-liquid pressure conversion provided by the invention
Control device, the device are combined using the cylinder of major diameter with the hydraulic cylinder of minor diameter, are moved back and forth and are driven using the push-and-pull of cylinder
The reciprocating motion of the pistons of hydrodynamic cylinder pressure, to complete the oil suction and fuel-displaced function of apparatus for pressurizing gas, liquid.The gas-liquid conversion control device
Two hydraulic cylinders being cascaded, the piston use of cylinder and hydraulic cylinder are driven by a piston rod using double-acting cylinder
Rigid connection, the oil suction of two hydraulic cylinders and it is fuel-displaced mutually stagger, such cylinder, which either advances or retreats, to be all completed at the same time
Oil suction and fuel-displaced two movements, the working efficiency of hydraulic system double.
Specifically, as shown in Figure 1, a kind of gas-liquid conversion control device, described device are made of oil cylinder and cylinder
Setting, the oil cylinder include oil cylinder rear cover 1, preceding cylinder barrel 2, secondary piston 3, cylinder seal 4, body 5 in oil cylinder, cylinder seal 6,
Cylinder barrel 7, piston rod 8 and oil cylinder front cover 9 afterwards；Cylinder includes casemaking clothes moth and its more than one combination, and cylinder includes pneumatically changing
To valve 10, air cylinder front cover 11, cylinder barrel 12, cylinder piston 13, striker 14 and cylinder back cover 15, cylinder tube is intracorporal in device
Piston is connect by piston rod 8 with the cylinder piston 13 in cylinder, and the push-and-pull of the cylinder piston 13 moves back and forth drive cylinder
Secondary piston 3 move back and forth, the oil suction of finishing device and fuel-displaced movement.
Pneumatic control valve 10 includes air valve front side cap 16, air valve shell 17, air valve cylinder sleeve 18, gas valve core 19, air valve rear side
Lid 20, referring to figs. 2 and 3, Fig. 2 are that gas valve core 19 is in front limit in pneumatic control valve, and gas valve core 19 limits after being in Fig. 3
Position.
For pneumatic control valve, when high pressure gas enters air valve air inlet, promotion gas valve core 19 is retreated to rear limit, air inlet
It is connected with cylinder back cavity 21, cylinder ante-chamber 23 is communicated with cylinder exhaust port 22, and high pressure gas enters cylinder back cavity 21, and pusher cylinder is living
Stopper rod advances, and cylinder piston rod drives former and later two hydraulic cylinder pistons to push ahead, behind hydraulic cylinder by internal hydraulic oil with
Certain pressure ejection cylinder enter lathe hydraulic valve bank driving lathe oil cylinder operation while, before a hydraulic cylinder simultaneously
Hydraulic oil is sucked, when cylinder piston advances to cylinder front limit, piston slap front thimble, the high pressure communicated at this time with air inlet
Gas control air-flow and air valve back cavity 25 are connected, and high pressure gas enters air valve back cavity 25 and gas valve core 19 is pushed to advance to air valve front limit,
High pressure gas is communicated with cylinder ante-chamber 23 at this time, and cylinder back cavity 21 is communicated with exhaust outlet, and high pressure gas enters cylinder ante-chamber 23 and pushes gas
The cylinder piston retreats, and cylinder piston limits after returning to cylinder under the promotion of high pressure gas, and cylinder piston rod drives two oil cylinders at this time
Piston toward post-tensioning, before hydraulic cylinder internal hydraulic oil is driven with the hydraulic valve bank that certain pressure ejection cylinder enters lathe
While lathe oil cylinder is run, latter one hydraulic cylinder sucks hydraulic oil simultaneously, when being limited after cylinder piston is retreated to cylinder,
Piston slap back center, the high pressure gas discharge of air valve back cavity, spool retreat, and cylinder piston repeats to advance, and is thusly-formed Zhou Erfu
The movement of beginning goes out in the cylinder piston rod of air valve air inlet and is equipped with control airflow orifice 26 by the connection gap with cylinder.Cylinder
Forward-reverse movement is constantly repeated, the continuous pressure oil output of oil cylinder piston is pushed.One cylinder of the device drives two oil cylinder mistakes
Start work, oil suction and it is fuel-displaced carry out simultaneously, while raising efficiency, also avoid lacking for the failure of oil feed of traditional supercharging device
It falls into.
Based on above-mentioned pneumatic control valve, a kind of gas-liquid conversion control device provided by the invention carries out group by oil cylinder and cylinder
At setting, quantity can be adjusted according to actual needs, cylinder piston 13 limits after moving to cylinder from cylinder front limit
During position, the cylinder channel and cylinder back cavity channel of piston rod 8 and the setting of 13 two sides of cylinder piston correspond to pneumatic control valve 10
Cylinder back cavity 17, the cylinder exhaust port 22, cylinder ante-chamber 23 of upper and lower two sides setting, the open and-shut mode including controlling air valve 24.
The preceding cylinder barrel 2 of oil cylinder part and the junction of rear cylinder barrel 7 are equipped with body 5 in oil cylinder, close by cylinder seal 6
Adjacent two cylinder barrels and oil circuit are connected, body 5 is additionally provided with oil sucting one-way valve and oil outlet one-way valve in oil cylinder, is correspondingly connected with oil outlet
And inlet port.Oil cylinder front cover 1 and oil cylinder rear cover 9 are communicated with the atmosphere equipped with venthole, the piston and front and rear covers of cylinder and oil cylinder
On be respectively arranged with sealing ring and guidance tape, separate each cavity.
Energy conservation gas-liquid conversion control device of the present invention is using major diameter cylinder and front and back stages small-diameter hydraulic cylinder
It combines, is fixed with stay bolt, body 5 in oil cylinder of the band with oily function, oil is arranged in the intermediate of front and back stages hydraulic cylinder
Oil sucting one-way valve and oil outlet one-way valve 2 are set inside body 5 in cylinder, by the oil suction of front and back stages hydraulic cylinder and it is fuel-displaced separate, phase
Do not interfere between mutually, using integrated design, the piston of later stage oil cylinder is integrated in piston rod for cylinder and the good piston rod 8 of oil cylinder
On, the secondary piston 3 and cylinder piston 13 of previous stage oil cylinder are secured with nuts on piston rod 8, and oil cylinder was run in order to prevent
It feels suffocated at this time in journey phenomenon, is drilled with venthole in oil cylinder front cover 9 and oil cylinder rear cover 1 and is communicated with atmosphere, the piston of cylinder and oil cylinder
It is respectively arranged with sealing ring and guidance tape on its front and rear covers, each cavity is separated, reaches non-interference effect utilization major diameter
The reciprocating motion of the pistons that the push-and-pull of cylinder moves back and forth drive cylinder completes oil suction and fuel-displaced function that gas-liquid increases device.Piston
Subsequent hydraulic cylinder cavity reduces when bar advances, the hydraulic oil of the inside by compression by oil outlet one-way valve be pushed out oil cylinder into
Enter machine tool hydraulic valve group, at this time under the action of high pressure oil, behind the oil sucting one-way valve of oil cylinder close, in order to avoid high pressure oil drains back to oil
Case.The cavity of front oil cylinder increases, and vacuum occurs, and the oil sucting one-way valve of front cavity is opened at this time, the hydraulic oil inside fuel tank
Be inhaled into cylinder barrel by oil sucting one-way valve, under the action of high pressure oil, before oil cylinder oil outlet one-way valve close, prevent rear oil cylinder
High pressure oil seal in preceding oil cylinder.Hydraulic cylinder cavity before when piston rod retreats reduces, and the hydraulic oil of the inside is passed through by compression
Cross oil outlet one-way valve and be pushed out oil cylinder and enter machine tool hydraulic valve group, at this time under the action of high pressure oil, before oil cylinder oil suction list
It is closed to valve, in case high pressure oil drains back to fuel tank.The cavity of oil cylinder increases below, vacuum occurs, at this time the oil suction list of back cavity
Opened to valve, the hydraulic oil inside fuel tank is inhaled into cylinder barrel by oil sucting one-way valve, under the action of high pressure oil, behind oil cylinder
Oil outlet one-way valve is closed, and the high pressure oil of oil cylinder seals in preceding oil cylinder before preventing.The oil sucting one-way valve and oil outlet one-way valve of front and back oil cylinder
It is all integrated on the middle body of oil cylinder, is exported by a road Ge Zong, reduce piping.
The actual operating status of the present invention is as follows:
When high pressure gas is blown into 12 back cavity pusher cylinder piston 13 of cylinder barrel, cylinder piston 13 pushes piston rod 8 to advance
When, the piston rod 8 of cylinder portion drives former and later two oil cylinder pistons to push ahead, behind oil cylinder part piston rod 8 it is (included
Piston) hydraulic oil inside rear cylinder barrel 7 is entered by oil outlet one-way valve with certain pressure ejection cylinder to the hydraulic valve of lathe
While group driving lathe oil cylinder operation, preceding cylinder barrel 2 is sucked hydraulic oil simultaneously by oil sucting one-way valve by secondary piston 3, works as cylinder
When piston is advanced to bottom, striker 14 in piston slap cylinder head, air operated reversing valve 10 is acted, and high pressure gas is blown into cylinder cylinder
While 12 ante-chamber of cylinder, cylinder back cavity connects air vent, and cylinder piston 13 limits after returning to cylinder under the promotion of high pressure gas, this
When cylinder piston rod drive two oil cylinder pistons toward post-tensioning, preceding cylinder barrel 2 passes through internal hydraulic oil with certain pressure fuel-displaced
While check valve ejection cylinder enters the hydraulic valve bank driving lathe oil cylinder operation of lathe, rear cylinder barrel 7 sucks hydraulic oil simultaneously,
When limiting after cylinder arrival, cylinder piston hits the striker 14 of cylinder back cover, and pneumatic control valve 10 realizes commutation, and cylinder is again heavy
Multiple forward motion, thus and thus in cycles.
One cylinder of the gas-liquid conversion control device drives two oil cylinders to be staggered movement, oil suction and it is fuel-displaced carry out simultaneously,
While raising efficiency, the defect of the failure of oil feed of traditional supercharging device is also avoided.On the other hand, device is greatly reduced
Energy consumption and calorific value.
Claims (9)
1. a kind of pneumatic control valve, it is characterised in that: including air valve front side cap (16), air valve shell (17), air valve cylinder sleeve (18),
Gas valve core (19), air valve rear side cover (20), cylinder back cavity (21), cylinder exhaust port (22), cylinder ante-chamber (23), air valve (24) and
Air valve back cavity (25) is taken offence after spool (19) retreats to when the air inlet pusher that high pressure gas enters pneumatic control valve and is limited, air inlet
It is connected with cylinder back cavity (21), cylinder ante-chamber (23) is communicated with cylinder exhaust port (22), and high pressure gas enters cylinder back cavity (21)
Pusher take offence cylinder piston rod advance, cylinder piston rod driving；Hydraulic cylinder piston is pushed ahead, and oil cylinder releases internal hydraulic oil
Oil cylinder enters the hydraulic valve bank of lathe, and driving lathe oil cylinder operation, the pneumatic control valve further includes at cylinder front limit
Equipped with front thimble, after cylinder piston contacts striker, the high pressure gas control air-flow and air valve back cavity (25) that air inlet communicates are connected,
High pressure gas enters air valve back cavity (25) and gas valve core (19) is pushed to advance to front limit, at this time high pressure gas and cylinder ante-chamber (23) phase
Logical, cylinder back cavity (21) is communicated with cylinder exhaust port (22), and high pressure gas enters the retrogressing of cylinder ante-chamber (23) pusher cylinder piston,
Cylinder piston limits after returning to cylinder under the promotion of high pressure gas, and cylinder piston rod drives two oil cylinder pistons toward post-tensioning at this time,
When cylinder piston is retreated to when rear limit, the high pressure gas of piston slap back center, air valve back cavity (25) is discharged, gas valve core (19)
It retreats.
2. a kind of pneumatic control valve according to claim 1, it is characterised in that: the pneumatic control valve is included in cylinder
The cylinder junction of piston rod two sides is equipped with the interface channel of air valve cylinder sleeve (18) and cylinder, and the interface channel is located at air valve
The two sides of core (19) and cylinder piston rod it is upper and lower between the contact wall of cylinder body.
3. a kind of pneumatic control valve according to claim 2, it is characterised in that: the interface channel of the cylinder is in gas valve core
(19) connection cylinder ante-chamber (23) and cylinder exhaust port (22) when limiting after being in when being in front limit, connect cylinder back cavity
(21) and cylinder exhaust port (22).
4. a kind of gas-liquid pressure conversion control device, described device are combined setting by oil cylinder and cylinder, it is characterised in that: institute
It states device to be carried out forming setting by oil cylinder and cylinder, the oil cylinder includes oil cylinder rear cover (1), preceding cylinder barrel (2), secondary piston (3), oil
Body (5), cylinder seal (6), rear cylinder barrel (7), piston rod (8) and oil cylinder front cover (9) in cylinder sealing ring (4), oil cylinder；The gas
After cylinder includes air operated reversing valve (10), air cylinder front cover (11), cylinder barrel (12), cylinder piston (13), striker (14) and cylinder
It covers (15), the intracorporal piston of cylinder tube is connect by piston rod (8) with the cylinder piston (13) in cylinder, the cylinder piston
(13) secondary piston (3) that push-and-pull moves back and forth drive cylinder moves back and forth, the oil suction of finishing device and fuel-displaced movement, and cylinder is living
Fill in (13) after moving to cylinder from cylinder front limit limit during, piston rod (8) and cylinder piston (13) two sides setting
Cylinder channel and cylinder back cavity channel correspond to pneumatic control valve (10) the cylinder back cavity (17) that two sides are arranged up and down, cylinder exhaust port
(22), cylinder ante-chamber (23), the open and-shut mode including controlling air valve (24).
5. a kind of gas-liquid pressure conversion control device according to claim 4, it is characterised in that: before the oil cylinder part
The junction of cylinder barrel (2) and rear cylinder barrel (7) is equipped with body (5) in oil cylinder, closely connects adjacent two by cylinder seal (6)
Cylinder barrel and oil circuit, body (5) is additionally provided with oil sucting one-way valve and oil outlet one-way valve in the oil cylinder, is correspondingly connected with oil outlet and oil suction
Mouthful.
6. a kind of gas-liquid pressure conversion control device according to claim 4, it is characterised in that: the oil cylinder front cover (1)
Be communicated with the atmosphere with oil cylinder rear cover (9) equipped with venthole, be respectively arranged on the piston and front and rear covers of cylinder and oil cylinder sealing ring and
Guidance tape separates each cavity.
7. a kind of gas-liquid pressure conversion control device according to claim 4, it is characterised in that: the cylinder and oil cylinder
It is sealed fixation by welding or bolt, joint is equipped with sealing ring.
8. a kind of gas-liquid pressure conversion control device according to claim 4, it is characterised in that: described device is additionally provided with gas
Liquid supercharging device, the apparatus for pressurizing gas, liquid include pneumatic pressure-regulating valve and hydraulic accumulator.
9. a kind of gas-liquid pressure conversion control device according to claim 4, it is characterised in that: the Pneumatic pressure is adjusted
Valve is located at the air inlet of apparatus for pressurizing gas, liquid, connect with the air inlet of cylinder, adjusts the admission pressure of cylinder, the hydraulic energy-accumulating
Device is located at the oil outlet of device, buffer unit pressure fluctuation caused by cylinder commutation micro breaks fuel feeding.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443607.XA CN110285109B (en) | 2019-05-24 | 2019-05-24 | Pneumatic control valve and gas-liquid pressure conversion control device |
| PCT/CN2019/088518 WO2020237455A1 (en) | 2019-05-24 | 2019-05-27 | Pneumatic control valve and air-liquid pressure conversion control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910443607.XA CN110285109B (en) | 2019-05-24 | 2019-05-24 | Pneumatic control valve and gas-liquid pressure conversion control device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110285109A true CN110285109A (en) | 2019-09-27 |
| CN110285109B CN110285109B (en) | 2020-09-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910443607.XA Active CN110285109B (en) | 2019-05-24 | 2019-05-24 | Pneumatic control valve and gas-liquid pressure conversion control device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110285109B (en) |
| WO (1) | WO2020237455A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110714954A (en) * | 2019-10-25 | 2020-01-21 | 湖南中大创远数控装备有限公司 | Oil cylinder |
| CN110936246A (en) * | 2019-11-11 | 2020-03-31 | 机械工业第四设计研究院有限公司 | Linear motion tool for cleaning castings |
| CN111946587A (en) * | 2020-08-24 | 2020-11-17 | 中国石油化工集团有限公司 | Self-pressure-discharging adjustable buffer gas pressure cylinder |
| CN111946250A (en) * | 2020-07-31 | 2020-11-17 | 中国石油天然气集团有限公司 | Gas-liquid coupling power conversion system for gas drilling |
| CN111964900A (en) * | 2020-08-25 | 2020-11-20 | 浙江斯特隆科技有限公司 | Multi-channel pressure setting test bench |
| CN113294582A (en) * | 2021-05-20 | 2021-08-24 | 帕维斯(杭州)科技有限公司 | Gas-liquid mixing valve |
| CN114294563A (en) * | 2021-12-29 | 2022-04-08 | 广东逸动科技有限公司 | Gas pressurization system and control method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110285109B (en) | 2020-09-04 |
| WO2020237455A1 (en) | 2020-12-03 |
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