CN209604344U - A kind of feeding hydraulic system - Google Patents
A kind of feeding hydraulic system Download PDFInfo
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- CN209604344U CN209604344U CN201920178693.1U CN201920178693U CN209604344U CN 209604344 U CN209604344 U CN 209604344U CN 201920178693 U CN201920178693 U CN 201920178693U CN 209604344 U CN209604344 U CN 209604344U
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Abstract
The utility model discloses a kind of feeding hydraulic systems.The feeding hydraulic system of the utility model is a kind of three cylinder Hydrauservo Systems using elevated pressure nitrogen gas source as the driving source during being sent into.The system drives hydraulic oil using high pressure nitrogen, drives hydraulic cylinder to be quickly sent by hydraulic oil.The system, as feedback sources, forms closed-loop control using displacement sensor, realizes and is accurately positioned.Equipment debugging pipe valve component in the system realizes fluid pressure line, hydraulic cylinder and is vented automatically and cylinder body initial position fix function.The feeding hydraulic system of the utility model has the characteristics that feeding load is big, speed is high and positioning accuracy is high, meanwhile, the performance requirement of hydraulic pump is reduced, development and maintenance cost are advantageously reduced.The feeding hydraulic system of the utility model model in wind tunnel is quick, steady can be sent into and be accurately located in test chamber, be with a wide range of applications in the research of wind-tunnel aerothermodynamics experiment.
Description
Technical field
The utility model belongs to Hydraulic servo drive and control field, and in particular to a kind of feeding hydraulic system.
Background technique
When carrying out dummy vehicle aerothermodynamics experiment, it usually needs the test model outside flow field will be located at quickly, smoothly
It is shipped in test air-flow.The gross weight of the total movements component such as structural member and model of bolster model reaches hundreds of kilograms.Feeding is set
It is standby to need that model is sent into flow field core space in about 0.3 second feeding time, about 1 meter of stroke.Due to being deposited in experimental enviroment
In factors such as greasy dirt, dust, high vacuum, strong electromagnetics, using hydraulic system as power source because it is with higher reliable
Property, lower maintenance cost is by domestic more wind-tunnel applications.
In similar wind-tunnel facilities at home, the scheme of single hydraulic cylinder driving is generallyd use.But it is not compressible from liquid
The ability of hydraulic oil storage potential energy is limited known to fundamental characteristics, it is difficult to sustained release high-power driving energy.Also, in identical pressure
Under conditions of difference, if desired single hydraulic cylinder scheme guarantees that enough bearing capacitys need to increase cylinder diameter, this makes high feed rate
Under, the flow of hydraulic oil is very big.Therefore, high thrust is persistently kept to hydraulic cylinder, is quickly sent into, then needs big flow, big function
The hydraulic loading system of rate supports, and harsh requirement is proposed to hydraulic pressing unit.This, which is unfavorable for reducing, develops and safeguards
Cost is also unfavorable for improving equipment dependability.
Currently, it needs to develop a kind of, steady feeding quick applied to model in wind tunnel and pinpoint hydraulic servo
System.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of feeding hydraulic systems.
The feeding hydraulic system of the utility model, its main feature is that, the hydraulic system includes pressurization overflow assemblies, high pressure
Tank, SERVO CONTROL and the hydraulic cylinder of ratio speedup, quick execution hydraulic package, feeding and lift line valve member and equipment tune
Test tube road valve member；
The pressurization overflow assemblies include check valve, hydraulic pump, overflow valve, oily filter and fuel tank.The outlet conduit of fuel tank
On check valve, hydraulic pump and oily filter be installed, the bypass duct of the outlet conduit of fuel tank is equipped with overflow valve, and overflow valve is for overflowing
Flow the hydraulic oil of superpressure.Oily filter is installed on the inlet duct of fuel tank；
The SERVO CONTROL and the hydraulic cylinder of ratio speedup includes the ratio speed-up cylinder being linked in sequence from top to bottom, servo
Master cylinder and displacement sensor, ratio speed-up cylinder are connected with the piston of SERVO CONTROL cylinder by piston rod, in SERVO CONTROL cylinder
Diameter is less than the internal diameter of ratio speed-up cylinder；The vertical displacement amount of displacement sensor ratio speed-up cylinder and SERVO CONTROL cylinder；
The quick execution hydraulic package includes the load hung under quick execution hydraulic cylinder and quick execution hydraulic cylinder；
The feeding and lift line valve member includes the servo flow valve connected side by side and reversal valve I；
The equipment debugging pipe valve component includes two oil circuits connected side by side.One oil circuit series connection reversal valve II
With pressure reducing valve I, another oil circuit series connection reversal valve III and pressure reducing valve II；
The pressurization overflow assemblies outlet conduit respectively with pressure pan, servo flow valve entrance P, I entrance P of reversal valve,
I entrance of pressure reducing valve, the connection of II entrance of pressure reducing valve；Pressurize overflow assemblies inlet duct respectively with servo flow valve entrance T, reversal valve
I entrance T, II entrance T of reversal valve, III entrance T of reversal valve connection；
The SERVO CONTROL cylinder upper oil cavitie exports A and couples with servo flow valve outlet A, reversal valve I respectively；Described watches
Master cylinder lower oil cavitie is taken to export B with servo flow valve outlet B, reversal valve I respectively and couple；
The ratio speed-up cylinder upper oil cavitie exports B with reversal valve II respectively, quick execution hydraulic cylinder upper oil cavitie couples；Than
Example speed-up cylinder lower oil cavitie exports A with reversal valve III respectively, quick execution hydraulic cylinder lower oil cavitie couples.
The feeding hydraulic system, which is characterized in that the SERVO CONTROL cylinder bore and ratio speedup cylinder bore
Proportional region are as follows: 1:2~1:5.
The feeding hydraulic system, which is characterized in that filling nitrogen and hydraulic oil, nitrogen pressure inside the pressure pan
Power range: 15Mpa~30Mpa, hydraulic oil range of capacity: 10L~30L.
The feeding hydraulic system of the utility model be it is a kind of using elevated pressure nitrogen gas source as be sent into during driving source
Three cylinder Hydrauservo Systems.It include: pressure pan, SERVO CONTROL hydraulic cylinder, ratio boosting hydraulic cylinder, hydraulic group of quick execution
The hardware such as part, hydraulic pump, displacement sensor, servo flow valve, fuel tank and top level control software.In the preparation stage, top level control
Software issues instruction so that hydraulic power unit start-up operation, is pumped into pressure pan from fuel tank for hydraulic oil in advance, the nitrogen having in tank
Air pressure is reduced to 15MPa~30MPa.When needing quickly to be sent into, control software opens servo flow valve in very short time, makes
It obtains pressure pan and SERVO CONTROL hydraulic cylinder forms hydraulic oil access, high pressure liquid pressure oil flows into servo control under the driving of compressed nitrogen
The inner piston side of hydraulic cylinder processed, and piston is pushed to move to the other side.Piston and ratio speedup in SERVO CONTROL hydraulic cylinder
Piston in hydraulic cylinder is by piston rod rigid connection, so that the piston driving ratio speedup in SERVO CONTROL hydraulic cylinder is hydraulic
Piston motion in cylinder.Piston rod terminal uses displacement sensor real-time detection piston position.The piston of ratio boosting hydraulic cylinder
Two sides cylinder body connect to form loop with quick execution hydraulic package piston two sides cylinder body by heavy caliber fluid pressure line respectively.
When being moved under driving of the piston of ratio boosting hydraulic cylinder in SERVO CONTROL hydraulic cylinder, the piston of quick execution hydraulic package with
With movement.Since the piston inner diameter of ratio boosting hydraulic cylinder is greater than the piston of quick execution hydraulic package.The program is with liquid at a slow speed
Cylinder pressure drives Hydraulic Cylinder, realizes high speed and is sent into.Also, long stroke hydraulic cylinder is driven with short stroke hydraulic cylinder, is realized
Big stroke is sent into.During feeding, top level control software real-time detection displacement transducer signal, and as input feedback,
The valve opening of real-time control servo flow valve is realized that quick execution hydraulic package steadily stops, being accurately positioned.
The feeding hydraulic system of the utility model has the characteristics that feeding load is big, speed is high and positioning accuracy is high, this is
System reduces the performance requirement of hydraulic pump, advantageously reduces development and maintenance cost.Equipment debugging pipe valve in the system
Component is vented automatically with to realize pipeline, hydraulic cylinder and cylinder body initial position fix function, facilitates equipment factory debugging and equipment
Functional rehabilitation after overhaul.The feeding hydraulic system of the utility model can quickly, steadily be sent into model in wind tunnel and essence
It is really located in test chamber, is with a wide range of applications in the research of hypersonic wind tunnel Aerodynamic Heating.
Detailed description of the invention
Fig. 1 is the feeding hydraulic system structure schematic diagram of the utility model；
In figure, 1. pressurization 2. pressure pan of overflow assemblies, 3. SERVO CONTROLs and hydraulic 4. quick execution of cylinder of ratio speedup
Hydraulic package 5. is sent into and 6. 11. check valve of equipment debugging pipe valve component of lift line valve member, 12. hydraulic pump
13. 32. SERVO CONTROL cylinder of overflow valve 14. oily filter, 15. fuel tank, 31. ratio speed-up cylinder, 33. displacement sensor 41. is quickly held
II 62. pressure reducing valve of row hydraulic cylinder 42. load, 51. servo flow valve, 52. reversal valve, I 61. reversal valve, I 63. pressure reducing valve II
64. reversal valve III.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the feeding hydraulic system of the utility model includes pressurization overflow assemblies 1, pressure pan 2, SERVO CONTROL
With the hydraulic cylinder 3 of ratio speedup, quick execution hydraulic package 4, feeding and lift line valve member 5 and equipment debugging pipeline valve
Door component 6；
The pressurization overflow assemblies 1 include check valve 11, hydraulic pump 12, overflow valve 13, oily filter 14 and fuel tank 15.Fuel tank
Check valve 11, hydraulic pump 12 and oily filter 14, the bypass duct installation of the outlet conduit of fuel tank 15 are installed on 15 outlet conduit
There is overflow valve 13, overflow valve 13 is used for the hydraulic oil of overflow superpressure.Oily filter 14 is installed on the inlet duct of fuel tank 15；
The hydraulic cylinder 3 of SERVO CONTROL and ratio speedup include be linked in sequence from top to bottom ratio speed-up cylinder 31,
SERVO CONTROL cylinder 32 and displacement sensor 33, ratio speed-up cylinder 31 are connected with the piston of SERVO CONTROL cylinder 32 by piston rod；
The vertical displacement amount of displacement sensor 33 measurement scale speed-up cylinder 31 and SERVO CONTROL cylinder 32；
The quick execution hydraulic package 4 includes quick execution hydraulic cylinder 41 and the lower suspension of quick execution hydraulic cylinder 41
Load 42；The feeding and lift line valve member 5 includes the servo flow valve 51 and reversal valve I 52 connected side by side；
The equipment debugging pipe valve component 6 includes two oil circuits connected side by side.One oil circuit series connection reversal valve
II 61 and pressure reducing valve I 62, another oil circuit series connection reversal valve III 64 and pressure reducing valve II 63；
1 outlet conduit of pressurization overflow assemblies respectively with pressure pan 2,51 entrance P of servo flow valve, reversal valve I 52
Entrance P, I 62 entrance of pressure reducing valve, the connection of II 63 entrance of pressure reducing valve；Pressurize 1 inlet duct of overflow assemblies respectively with servo flow valve
51 entrance T, I 52 entrance T of reversal valve, II 61 entrance T of reversal valve, III 64 entrance T of reversal valve connection；
32 upper oil cavitie of SERVO CONTROL cylinder exports A with servo flow valve 51 respectively, reversal valve I 52 exports A and couples；Institute
32 lower oil cavitie of SERVO CONTROL cylinder stated exports B with servo flow valve 51 respectively, reversal valve I 52 exports B and couples；
31 upper oil cavitie of ratio speed-up cylinder exports B, 41 upper oil cavitie of quick execution hydraulic cylinder with reversal valve II 61 respectively
Connection；31 lower oil cavitie of ratio speed-up cylinder exports A with reversal valve III 64 respectively, 41 lower oil cavitie of quick execution hydraulic cylinder couples.
The proportional region of 31 internal diameter of 32 internal diameter of SERVO CONTROL cylinder and ratio speed-up cylinder are as follows: 1:2~1:5.
Nitrogen and hydraulic oil are filled inside the pressure pan 2, nitrogen pressure range: 15Mpa~30Mpa, hydraulic oil hold
Measure range: 10L~30L.
Embodiment 1
The course of work of the present embodiment is as follows:
In the preparation stage, the hydraulic oil in fuel tank 15 is sent into pressure pan 2 simultaneously by check valve 11 after the pressurization of hydraulic pump 12
Nitrogen in compressed tanks, hydraulic oil liquid level rises in tank, and nitrogen is compressed into the predetermined pressure of 15MPa~30Mpa；Hypertonia
When, overflow valve 13 opens pressure release, and stops the work of hydraulic pump 12.
In use, pressure pan 2 passes through pipeline and feeding and lift line valve member 5 and SERVO CONTROL and ratio
The hydraulic cylinder 3 of speedup forms hydraulic circuit.When needing load 42 being quickly fed to flow field, it is sent into and lift line valve group
Servo flow valve 51 in part 5 is opened, and high pressure liquid pressure oil enters SERVO CONTROL by servo flow valve 51 and ratio speedup is hydraulic
Join 32 lower chamber of SERVO CONTROL cylinder of cylinder 3, and pushes piston stroking upward.Work of the intracorporal hydraulic oil of SERVO CONTROL cylinder epicoele in piston
Oil cylinder 15 into hydraulic pressurization overflow assemblies 1 and is returned to by reversal valve 52 with lower.Similarly, it is needing model being lifted out flow field
When, high pressure liquid pressure oil enters 32 upper cavity of SERVO CONTROL cylinder by servo flow valve 51, and pushes piston downlink.SERVO CONTROL cylinder
The intracorporal hydraulic oil of 32 cavity of resorptions passes through reversal valve 52 under the effect of piston and enters hydraulic pressurization overflow assemblies 1 and return to oil cylinder
15。
SERVO CONTROL and the hydraulic cylinder 3 of ratio speedup are divided into the top part and the bottom part point.In use, 32 piston of SERVO CONTROL cylinder
Upstream or downstream drive 31 piston stroking upward of ratio speed-up cylinder or downlink under high pressure hydraulic oil driver.Realize high pressure differential, low
Traffic driven low pressure difference, the effect of big flow, reducing can bearer traffic to components such as hydraulic control circuit, servo flow valves
Demand and to 2 flow demand of pressure pan.Ratio speed-up cylinder 31 is connected with quick execution hydraulic package 4 by fluid pressure line.
Also, 31 piston inner diameter of ratio speed-up cylinder is greater than 4 piston inner diameter of quick execution hydraulic package.Due to ratio speed-up cylinder 31 and quickly
Executing 4 piston both ends inner cavity of hydraulic package, connection forms hydraulic lock circuit two-by-two respectively, and 31 piston of ratio speed-up cylinder is at a slow speed
Movement can be driven 4 piston of quick execution hydraulic package and quickly move.The movement velocity ratio of two pistons is piston area ratio
It is reciprocal.In the lower part of SERVO CONTROL cylinder 32, the input letter that displacement sensor 33 is controlled as 51 aperture of servo flow valve is arranged
Number, to realize quick execution hydraulic package 4 steadily feeding, accurate positioning.
The hydraulic fluid chamber and 31 oil pocket of ratio speed-up cylinder at 4 piston both ends of quick execution hydraulic package pass through large diameter pipeline point
Not Xiang Lian, piston rod is connected with components such as the models that needs quickly to be sent into.In use, quick execution hydraulic package 4 exists
Model is quickly fed in flow field under the driving of ratio speed-up cylinder 31 or lift scheme is to initial position, realizes that wind tunnel model is sent
Into and exit function.
It is sent into and lift line valve member 5 is mainly made of servo flow valve 51 and reversal valve 52.It is connected to high pressure
Tank 2, ratio speed-up cylinder 31 and pressurization overflow assemblies 1 constitute high-pressure flow circuit.
Embodiment 2
The present embodiment and the embodiment of embodiment 1 are essentially identical, and the main distinction is:
After equipment dispatches from the factory debugging and maintenance of equipment in functional rehabilitation debugging, pressure pan 2 and equipment debugging pipe valve group
Part 6, SERVO CONTROL and the hydraulic cylinder 3 of ratio speedup and quick execution hydraulic cylinder 41 constitute debugging loop.Its function is to exclude
Fluid pressure line and the intracorporal air of hydraulic cylinder, and determine the initial position of hydraulic cylinder piston.It is set by top level control software realization
Standby initialization plays a significant role the functional rehabilitation after equipment factory debugging, equipment rebuilding.
Claims (3)
1. a kind of feeding hydraulic system, which is characterized in that the hydraulic system includes pressurization overflow assemblies (1), pressure pan
(2), SERVO CONTROL and the hydraulic cylinder of ratio speedup (3), quick execution hydraulic package (4), feeding and lift line valve member
(5) and equipment debugging pipe valve component (6)；
The pressurization overflow assemblies (1) include check valve (11), hydraulic pump (12), overflow valve (13), oily filter (14) and fuel tank
(15)；Check valve (11), hydraulic pump (12) and oily filter (14), the outlet of fuel tank (15) are installed on the outlet conduit of fuel tank (15)
The bypass duct of pipeline is equipped with overflow valve (13), and overflow valve (13) is used for the hydraulic oil of overflow superpressure；The entrance of fuel tank (15)
Oily filter (14) are installed on pipeline；
The SERVO CONTROL and the hydraulic cylinder of ratio speedup (3) include the ratio speed-up cylinder (31) being linked in sequence from top to bottom,
SERVO CONTROL cylinder (32) and displacement sensor (33)；The piston of ratio speed-up cylinder (31) and SERVO CONTROL cylinder (32) is connected by piston
Bar connection；The vertical displacement amount of displacement sensor (33) measurement scale speed-up cylinder (31) and SERVO CONTROL cylinder (32)；
The quick execution hydraulic package (4) includes hanging under quick execution hydraulic cylinder (41) and quick execution hydraulic cylinder (41)
Load (42)；
The feeding and lift line valve member (5) includes the servo flow valve (51) and reversal valve I (52) connected side by side；
The equipment debugging pipe valve component (6) includes two oil circuits arranged side by side, and an oil circuit connects reversal valve II (61)
With pressure reducing valve I (62), another oil circuit series connection reversal valve III (64) and pressure reducing valve II (63)；
Described pressurization overflow assemblies (1) outlet conduit respectively with pressure pan (2), servo flow valve (51) entrance P, reversal valve I
(52) entrance P, pressure reducing valve I (62) entrance, the connection of pressure reducing valve II (63) entrance；Pressurize overflow assemblies (1) inlet duct respectively with
Servo flow valve (51) entrance T, reversal valve I (52) entrance T, reversal valve II (61) entrance T, reversal valve III (64) entrance T connection；
Described SERVO CONTROL cylinder (32) upper oil cavitie couples with servo flow valve (51) outlet A, reversal valve I (52) outlet A respectively；
Described SERVO CONTROL cylinder (32) lower oil cavitie couples with servo flow valve (51) outlet B, reversal valve I (52) outlet B respectively；
Described ratio speed-up cylinder (31) upper oil cavitie oils with reversal valve II (61) outlet B, quick execution hydraulic cylinder (41) respectively
Chamber connection；Ratio speed-up cylinder (31) lower oil cavitie joins with reversal valve III (64) outlet A, quick execution hydraulic cylinder (41) lower oil cavitie respectively
It connects.
2. feeding hydraulic system according to claim 1, which is characterized in that SERVO CONTROL cylinder (32) internal diameter with than
The proportional region of example speed-up cylinder (31) internal diameter are as follows: 1:2~1:5.
3. feeding hydraulic system according to claim 1, which is characterized in that fill nitrogen inside the pressure pan (2)
And hydraulic oil, nitrogen pressure range: 15Mpa~30Mpa, hydraulic oil range of capacity: 10L~30L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920178693.1U CN209604344U (en) | 2019-02-01 | 2019-02-01 | A kind of feeding hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920178693.1U CN209604344U (en) | 2019-02-01 | 2019-02-01 | A kind of feeding hydraulic system |
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| CN209604344U true CN209604344U (en) | 2019-11-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611393A (en) * | 2019-02-01 | 2019-04-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of feeding hydraulic system |
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2019
- 2019-02-01 CN CN201920178693.1U patent/CN209604344U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109611393A (en) * | 2019-02-01 | 2019-04-12 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of feeding hydraulic system |
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