CN108916144A - A kind of dynamic hydraulic combined oil supply system - Google Patents
A kind of dynamic hydraulic combined oil supply system Download PDFInfo
- Publication number
- CN108916144A CN108916144A CN201810723536.4A CN201810723536A CN108916144A CN 108916144 A CN108916144 A CN 108916144A CN 201810723536 A CN201810723536 A CN 201810723536A CN 108916144 A CN108916144 A CN 108916144A
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- Prior art keywords
- oil
- valve
- fuel feed
- feed pump
- connect
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Classifications
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- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/06—Use of special fluids, e.g. liquid metal; Special adaptations of fluid-pressure systems, or control of elements therefor, to the use of such fluids
Abstract
The invention discloses a kind of dynamic hydraulic combined oil supply systems, the system includes gas drive oil sources equipment and liquid displacement of reservoir oil source device, gas drive oil sources equipment includes the first fuel feed pump, and liquid displacement of reservoir oil source device includes the second fuel feed pump, and the first, second fuel feed pump is in parallel and connect with for oil export；First fuel feed pump one end and the connection of the liquid side of air-oil actuator, the other end are connect with for oil export, the first solenoid directional control valve, the first proportioning valve and the first check valve are in series on the first fuel feed pump, the gas side of air-oil actuator is connect with high pressure gas cylinder；Second fuel feed pump one end is connect with hydraulic pump, the other end is connect with for oil export, and second one-way valve and the second proportioning valve are in series on the second fuel feed pump.The present invention innovatively combines gas drive oil sources equipment and liquid displacement of reservoir oil source device, by the two, fuel feeding realizes high-pressure high-flow output simultaneously, meet the requirement that special vehicle exports high-pressure high-flow, there is outstanding advantages of highly reliable, easy to maintain, at low cost, small in size.
Description
Technical field
The present invention relates to hydraulic oil source technical fields, specifically for, the present invention be a kind of dynamic hydraulic combined oil supply system.
Background technique
Currently, requirement of the special vehicle to the quick jacking capacity of load is increasingly with the continuous development of special purpose vehicle technology
Height, and during quick lifting, it is necessary to the hydraulic system for providing lifting power supplies bigger flow (oil mass), so that
Load obtains lifting speed, completion lifting movement faster.There are mainly two types of the conventional modes for increasing flow rate of hydraulic system：(1)
Increase discharge capacity, revolving speed or the quantity for increasing hydraulic pump of hydraulic pump, (2) generate high temperature and high pressure gas by way of burning, from
And it quickly pushes the oil liquid of storage, realize big flow output.
For above-mentioned usual manner (1), although theoretically by the discharge capacity of increase hydraulic pump, revolving speed or liquid can be increased
The mode of the quantity of press pump realizes that big flow exports, but finds in practice process：The existing power of power is provided for hydraulic pump
Source is often difficult to meet actual demand, because to will lead to hydraulic pump high to the demanded power output of power source for this mode, moves
Power source must export very big power and just be able to satisfy hydraulic pump normal work, it is thus evident that and existing hydraulic pump is difficult to meet the requirements,
If specially design ultra high power power source, has that cost is excessively high, is difficult to promote and apply；For above-mentioned usual manner
(2), since high-intensity combustion process is inevitable, it is necessary to the combustion generator of resistance to super-pressure, superhigh temperature resistant is provided, to existing
Have for technology, because of the technical bottleneck of material, structure etc., design this combustion generator be it is extremely difficult, generally
It is difficult to carry out volume production, the combustion generator that can be designed often has the military service time limit is short, reliability is low, maintenance is difficult etc.
Problem；Allow to design high-intensity combustion device reluctantly, however it remains cost is excessively high, is difficult to the problems such as promoting and applying.
Therefore, exist in view of the existing mode for increasing flow rate of hydraulic system and require high to power source or need to design special combustion
How the problems such as burning generator, effectively guarantee requirement of the special vehicle hydraulic system to flow, become those skilled in the art
Member's technical problem urgently to be resolved and the emphasis studied always.
Summary of the invention
It requires excessively high to the output power of power source of hydraulic pump or has to design superhigh temperature resistant, resistance to solve the prior art
The problems such as combustion generator of super-pressure, the present invention innovatively provide a kind of dynamic hydraulic combined oil supply system, pass through gas drive oil sources
Big flow oil sources is realized with the mode of liquid displacement of reservoir oil source parallel connection, with quick promotion storage oil liquid, realizes super-flow output, thus compared with
Problems of the existing technology are solved well；The present invention had both avoided the big problem of power consumption demand, in turn avoided burned
Journey thereby reduces maintenance difficulty.
To realize the above-mentioned technical purpose, the invention discloses a kind of dynamic hydraulic combined oil supply system, which includes gas drive oil
Source device and liquid displacement of reservoir oil source device, the gas drive oil sources equipment include the first fuel feed pump, and the liquid displacement of reservoir oil source device includes second
Fuel feed pump, first fuel feed pump are arranged in parallel with second fuel feed pump and connect with for oil export；First fuel feeding
Pipe one end and the connection of the liquid side of air-oil actuator, the other end are connect with for oil export, are in series with first on first fuel feed pump
Solenoid directional control valve, the first proportioning valve and the first check valve, the gas side of air-oil actuator are connect with high pressure gas cylinder；Second fuel feeding
Pipe one end is connect with hydraulic pump, the other end is connect with for oil export, and second one-way valve and are in series on second fuel feed pump
The liquid sucting port of two proportioning valves, hydraulic pump is connected with hydraulic tank, and the power intake of hydraulic pump is connect with prime mover.
Based on above-mentioned technical solution, the present invention innovatively quickly pushes hydraulic oil pump feed and high pressure gas storage oil liquid to supply
Oil combines, and the high-pressure high-flow output of dynamic hydraulic combined oil supply system is realized, to solve many difficulties of the existing technology
Topic, avoid the prior art be realization high-pressure high-flow and the problem of need power source (such as prime mover) of super high power, and
The problem of avoiding the combustion generator for designing resistance to super-pressure, superhigh temperature resistant.
Further, the gas drive oil sources further includes the second solenoid directional control valve and third check valve, and second electromagnetism changes
It is composed in series the first access to valve and the third check valve, first proportioning valve and first check valve are composed in series
It connects after two accesses, first access and the alternate path are in parallel with first solenoid directional control valve.
Based on above-mentioned improved technical solution, the present invention can be the reversed fuel feeding of gas drive oil sources, the party by liquid displacement of reservoir oil source
Case not only enriches function of the invention, but also optimizes the structure of dynamic hydraulic combined oil supply system, reaches and reduces small product size
Purpose.
Further, from the second solenoid directional control valve to the direction for oil export, the third check valve is oppositely arranged
Check valve.
Further, first solenoid directional control valve is the solenoid directional control valve that type is often closed in power-off.
Further, second solenoid directional control valve is the solenoid directional control valve that type is often closed in power-off.
Further, the liquid displacement of reservoir oil source device further includes overflow valve, and the overflow valve is set to second fuel feeding
Guan Shang.
Further, the overflow valve is set between the hydraulic pump and the second one-way valve.
Further, manual ball is provided on the air supply pipe between the high pressure gas cylinder and the gas side of the air-oil actuator
Valve.
Based on above-mentioned improved technical solution, the control to high pressure gas drive is realized by manual ball valve, can greatly be provided
The safety of dynamic hydraulic combined oil supply system of the present invention.
Further, pressure is additionally provided on the air supply pipe between the high pressure gas cylinder and the gas side of the air-oil actuator
Sensor.
Further, filled with nitrogen in the high pressure gas cylinder.
Beneficial effects of the present invention are：The present invention innovatively combines gas drive oil sources equipment and liquid displacement of reservoir oil source device,
By the two, fuel feeding realizes high-pressure high-flow output simultaneously, meets the requirement that special vehicle exports high-pressure high-flow, having can
Outstanding advantages of strong, easy to maintain, at low cost, small in size by property.
The present invention drives oil source structure to greatly reduce the requirement to prime mover output power by dynamic hydraulic combined, and existing
Technology is compared, and under the output of identical flow, the present invention is only that liquid drives needed for oil supply system to prime mover demanded power output
The 30%~70% of power is suitable for large-tonnage and loads quick rotating lifting system (such as special purpose vehicle), using effect of the present invention
Well, the high-pressure high-flow exported is stably and controllable, can satisfy extraordinary vehicle hydraulic system requirement.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of dynamic hydraulic combined oil supply system.
In figure,
1, high pressure gas cylinder；2, manual ball valve；3, air-oil actuator；4, the first solenoid directional control valve；5, the second solenoid directional control valve；
6, third check valve；7, the first proportioning valve；8, the first check valve；9, prime mover；10, hydraulic pump；11, hydraulic oil container；12, overflow
Valve；13, second one-way valve；14, the second proportioning valve.
Specific embodiment
Detailed explanation and illustration is carried out to dynamic hydraulic combined oil supply system of the present invention with reference to the accompanying drawings of the specification.
As shown in fig. 1, the present embodiment specifically discloses a kind of dynamic hydraulic combined oil supply system, which includes gas drive oil sources
Equipment and liquid displacement of reservoir oil source device, gas drive oil sources equipment include the first fuel feed pump, liquid displacement of reservoir oil source device include the second fuel feed pump, first
Fuel feed pump is arranged in parallel with the second fuel feed pump and connect with for oil export (can be regarded as in Fig. 1 at P), realize it is positive (i.e. to
For the fuel-displaced direction of oil export) dynamic hydraulic combined driving.
For specifically, as shown in Figure 1, first fuel feed pump one end is connect with the liquid side of air-oil actuator 3, the other end with
It is connected for oil export, is in series with the first solenoid directional control valve 4, the first proportioning valve 7 and the first check valve 8, this reality on the first fuel feed pump
Applying example is to be sequentially connected in series, and the first proportioning valve 7 is realized and controlled according to the flow proportional of planning, and the first check valve 8 is positive
Setting, to realize reverse isolation, and the gas side of air-oil actuator 3 is connect with high pressure gas cylinder 1；Second fuel feed pump one end and hydraulic pump
10 connections, the other end are connect with for oil export, and second one-way valve 13 and the second proportioning valve 14, this reality are in series on the second fuel feed pump
Applying example is to be sequentially connected in series, and reverse isolation is realized in the positive setting of second one-way valve 13, avoids oil liquid reflux to hydraulic pump 10, second
Proportioning valve 14 is then realized and is controlled according to the flow proportional of planning；The liquid sucting port of hydraulic pump 10 is connect with hydraulic oil container 11, is used
In obtaining oil liquid from hydraulic oil container 11, the power intake of hydraulic pump 10 is connect with prime mover 9, is hydraulic pump by prime mover 9
10 provide power；The present embodiment realizes the index request, gentle using liquid displacement of reservoir oil source according to load and executing agency's run duration
Displacement of reservoir oil source exports high-voltage oil liquid simultaneously, meets the requirement that special vehicle exports high-pressure high-flow.Wherein, high pressure gas cylinder 1 and gas
The gas side of liquid actuator 3 is connected, and the liquid side oil liquid of air-oil actuator 3 is in gas when in dynamic hydraulic combined big flow oil sources work
The lower quickly discharge of driving, when external output flow is combined with gas drive oil sources in liquid displacement of reservoir oil source, it can be achieved that high-pressure high-flow exports, stream
Amount uses ratio control model, when the external output flow of dynamic hydraulic combined big flow oil sources, first drives fuel feeding by liquid, is gradually increased liquid drive
Gas drive fuel feeding is opened after fuel supply flow rate again, guarantees the stability of executing agency's movement.In the specific implementation, liquid displacement of reservoir oil source and gas drive
Oil sources exports high-voltage oil liquid simultaneously by a certain percentage at work, for example, liquid displacement of reservoir oil source maximum output flow can be according to practical feelings
Condition accounts for the 30%~70% of aggregate demand, remaining is exported by gas drive oil sources.
In the present embodiment, proposing a kind of is newly the oil-filled unique texture of gas drive oil sources：Gas drive oil sources further includes series connection
The second solenoid directional control valve 5 and third check valve 6 being arranged, from the second solenoid directional control valve 5 to the direction for oil export, third is unidirectional
Valve 6 is oppositely arranged, for realizing reversed oil-filled, and it is logical that the second solenoid directional control valve 5 and the third check valve 6 are composed in series first
Road, the first proportioning valve 7 and the first check valve 8 are composed in series alternate path, the first access and alternate path it is in parallel after with the first electricity
Magnetic reversal valve 4 is connected, and in the present embodiment, the first solenoid directional control valve 4 is the solenoid directional control valve that type is often closed in power-off, and the second electromagnetism changes
It is the solenoid directional control valve that type is often closed in power-off to valve 5.To realize level pressure overflow, the liquid displacement of reservoir oil source device of the present embodiment further includes overflowing
Valve 12 is flowed, and overflow valve 12 is set on the second fuel feed pump, carries out overflow pressure stabilizing for realizing the oil liquid exported to hydraulic pump 10
Control, more specifically, overflow valve 12 is set between hydraulic pump 10 and second one-way valve 13.
In addition, the hydraulic oil container 11 in the present embodiment is also connected to oil inlet pipe, it can be by oil inlet pipe into hydraulic oil container 11
Oiling.Scheme as a further improvement, the air supply pipe between the high pressure gas cylinder 1 of the present embodiment and the gas side of air-oil actuator 3
On be provided with manual ball valve 2, the switch of the manual ball valve 2 for realizing whether be air-oil actuator 3 gas side gas supply, to realize
Gas drive dynamic Control improves safety of the present invention, and on the basis of the disclosure of invention, also settable solenoid valve is realized and manual
(hand stop valve and solenoid valve double control mode can be used) in the identical function of ball valve 2；It is high to be detected to supply gas pressure
Pressure sensor is additionally provided on air supply pipe between air bottle 1 and the gas side of air-oil actuator 3；In the present embodiment, in high pressure
The high pressure nitrogen of certain pressure is pre-charged in gas cylinder 1, after air-oil actuator 3 is full of oil liquid, pressure can be more than in high pressure gas cylinder 1
Maximum pressure is loaded, the volume of high pressure gas cylinder 1 should meet gas pressure of the inside of a bottle in the gas drive oil sources course of work and be consistently higher than load pressure
The requirement of power；More specifically, 1 volume of high pressure gas cylinder of the present embodiment is 300L, and the pressure of pre- inflated with nitrogen is in high pressure gas cylinder 1
16MPa, the volume of air-oil actuator 3 should be greater than demand of the system to gas drive oil sources output oil liquid amount, can reserve 20% or so
Surplus, 3 volume of air-oil actuator is 160L in the present embodiment, and the oil liquid of gas drive oil sources equipment output is 125L.
The present invention can work as follows：(1) oil-filled to gas drive oil sources：Manual ball valve 2 is opened, the first electromagnetism changes
It is powered and commutates to valve 4 and the second solenoid directional control valve 5, to allow oil liquid to pass through；Primer fluid displacement of reservoir oil source, adjusting the second proportioning valve 14 makes
It obtains liquid and drives output flow about 30L/min~50L/min, the pressure of overflow valve 12 is gradually turned up, when pressure reaches in high pressure gas cylinder 1
After initial pressure 16MPa, oil liquid begins through third check valve 6, the second solenoid directional control valve 5 and the first solenoid directional control valve 4 and enters
Air-oil actuator 3.With the continuation of Oil feeding process, oil liquid constantly enters air-oil actuator 3, and (the present embodiment is " piston type accumulation of energy
Device "), while the high pressure gas in high pressure gas cylinder 1 is compressed, gradually rise gas pressure, when pressure reaches predetermined value 25MPa
Stop oil-filled, closes above-mentioned the first solenoid directional control valve 4 and the second solenoid directional control valve 5；(2) dynamic hydraulic combined fuel feeding：It starts first
Liquid displacement of reservoir oil source gradually adjusts the second proportioning valve 14, so that liquid, which drives output flow, is gradually increased to maximum stream flow, from adjusting second
Proportioning valve 14 opens the first solenoid directional control valve 4 after starting timing, about 1s, and gradually adjusts the first proportioning valve 7 and make gas drive defeated
Outflow is gradually increased to maximum value, to realize dynamic hydraulic combined fuel feeding；(3) fuel cut-off：The first proportioning valve 7 is gradually adjusted first
So that gas drive oil sources output flow gradually decreases to zero, the first solenoid directional control valve 4 is closed, then adjusts the reduction of the second proportioning valve 14
Liquid displacement of reservoir oil source output flow finally closes liquid displacement of reservoir oil source to zero.
The present embodiment using liquid displacement of reservoir oil source to the liquid side fuel feeding of air-oil actuator 3, simply may be used by scheme provided by the present invention
Row, in practical oil-filled 150L, the used time about 3 minutes, high-pressure gas pressure increased about 10MPa, and high pressure gas temperature increases about 20
DEG C, requirement can be met completely.The gentle displacement of reservoir oil source in liquid displacement of reservoir oil source is controlled respectively using the first proportioning valve and the second proportioning valve to supply
Oil stream amount, and by the way of first opening gas drive fuel feeding again by liquid drive fuel feeding and after being gradually increased liquid drive fuel supply flow rate, high pressure is big
Flow exports process fast and stable.The pre-stored oil liquid of the present embodiment gas drive oil sources is filled with by liquid displacement of reservoir oil source, according to practical feelings
The output flow in condition, gas drive oil sources and liquid displacement of reservoir oil source according to a certain percentage, is both no more than the ability of the external output power of prime mover,
The total volume of oil sources is minimized again.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
In the description of this specification, reference term " the present embodiment ", " one embodiment ", " some embodiments ", " show
The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are included at least one embodiment or example of the invention.In the present specification, above-mentioned term is shown
The statement of meaning property is necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other,
Those skilled in the art can be by different embodiments or examples described in this specification and different embodiments or examples
Feature is combined.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement and simple modifications etc., should all be included in the protection scope of the present invention in content.
Claims (10)
1. a kind of dynamic hydraulic combined oil supply system, it is characterised in that：The system includes gas drive oil sources equipment and liquid displacement of reservoir oil source device, institute
State gas drive oil sources equipment include the first fuel feed pump, the liquid displacement of reservoir oil source device include the second fuel feed pump, first fuel feed pump with
Second fuel feed pump is arranged in parallel and connect with for oil export；First fuel feed pump one end and air-oil actuator (3)
The connection of liquid side, the other end are connect with for oil export, and the first solenoid directional control valve (4), the first ratio are in series on first fuel feed pump
Example valve (7) and the first check valve (8), the gas side of air-oil actuator (3) are connect with high pressure gas cylinder (1)；Second fuel feed pump one
End is connect with hydraulic pump (10), the other end is connect with for oil export, and second one-way valve (13) are in series on second fuel feed pump
It is connect with the liquid sucting port of the second proportioning valve (14), hydraulic pump (10) with hydraulic oil container (11), the power intake of hydraulic pump (10)
It is connect with prime mover (9).
2. dynamic hydraulic combined oil supply system according to claim 1, it is characterised in that：The gas drive oil sources further includes the second electricity
Magnetic reversal valve (5) and third check valve (6), second solenoid directional control valve (5) and the third check valve (6) are composed in series
One access, first proportioning valve (7) and first check valve (8) are composed in series alternate path, first access and institute
It connects after stating alternate path parallel connection with first solenoid directional control valve (4).
3. dynamic hydraulic combined oil supply system according to claim 2, it is characterised in that：From the second solenoid directional control valve (5) to confession
The direction of oil export, the third check valve (6) are oppositely arranged check valve.
4. dynamic hydraulic combined oil supply system according to claim 3, it is characterised in that：First solenoid directional control valve (4) is
The solenoid directional control valve of type is often closed in power-off.
5. dynamic hydraulic combined oil supply system according to claim 4, it is characterised in that：Second solenoid directional control valve (5) is
The solenoid directional control valve of type is often closed in power-off.
6. dynamic hydraulic combined oil supply system according to claim 5, it is characterised in that：The liquid displacement of reservoir oil source device further includes overflowing
It flows valve (12), and the overflow valve (12) is set on second fuel feed pump.
7. dynamic hydraulic combined oil supply system according to claim 6, it is characterised in that：The overflow valve (12) is set to described
Between hydraulic pump (10) and the second one-way valve (13).
8. dynamic hydraulic combined oil supply system according to claim 7, it is characterised in that：The high pressure gas cylinder (1) and the gas
Manual ball valve (2) are provided on air supply pipe between the gas side of liquid actuator (3).
9. dynamic hydraulic combined oil supply system according to claim 8, it is characterised in that：The high pressure gas cylinder (1) and the gas
Pressure sensor is additionally provided on air supply pipe between the gas side of liquid actuator (3).
10. according to claim 1 or dynamic hydraulic combined oil supply system described in 9, it is characterised in that：It is filled in the high pressure gas cylinder (1)
There is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810723536.4A CN108916144B (en) | 2018-07-04 | 2018-07-04 | Gas-liquid combined oil supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810723536.4A CN108916144B (en) | 2018-07-04 | 2018-07-04 | Gas-liquid combined oil supply system |
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| CN108916144A true CN108916144A (en) | 2018-11-30 |
| CN108916144B CN108916144B (en) | 2020-02-28 |
Family
ID=64424576
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| CN201810723536.4A Active CN108916144B (en) | 2018-07-04 | 2018-07-04 | Gas-liquid combined oil supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111927559A (en) * | 2020-07-27 | 2020-11-13 | 北京航天发射技术研究所 | Gas injection expansion actuating system and control method |
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| Publication number | Publication date |
|---|---|
| CN108916144B (en) | 2020-02-28 |
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