CN1070455A - Semi-opened hydraulic circulation oil line system - Google Patents
Semi-opened hydraulic circulation oil line system Download PDFInfo
- Publication number
- CN1070455A CN1070455A CN 92109676 CN92109676A CN1070455A CN 1070455 A CN1070455 A CN 1070455A CN 92109676 CN92109676 CN 92109676 CN 92109676 A CN92109676 A CN 92109676A CN 1070455 A CN1070455 A CN 1070455A
- Authority
- CN
- China
- Prior art keywords
- oil
- communicated
- fuel tank
- fixed displacement
- displacement motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of semi-opened hydraulic circulation oil line system, under motor driving, pressure oil is communicated with output torque and rotating speed through the oil outlet of metering pump with the filler opening of fixed displacement motor by pipeline.The oil outlet one tunnel of fixed displacement motor is communicated with the filler opening of metering pump, and is communicated with fuel tank by fuel sucking pipe through pipeline, adjustable restrictive valve; Another road is communicated with fuel tank by return tube through pipeline, another adjustable restrictive valve, relief valve also in parallel, series connection oil purifier and cooler in system.Owing to adopt part oil return technological scheme, relevant hydraulic pressure component size such as fuel tank is reduced significantly, be convenient to installation, reduce cost, the oil absorption of pump is improved.
Description
The present invention relates to the hydrodynamic pressure executive system.
Hydraulic transmission is compared with mechanical transmission, has characteristics such as any speed governing, installation site be unrestricted, therefore is widely used on engineering machinery.But engineering machinery is owing to be subjected to the restriction of installing space, and is particularly strong to the miniaturization of hydraulic pressure installation, light-weighted requirement.The hydraulic pressure researcher has obtained many achievements in research for reducing hydraulic system structure size aspect both at home and abroad, but all just lays particular emphasis on the Application and Development of small-sized hydraulic element, has ignored improvement and innovation to the system oil-way design aspect.
Though hydraulic system is ever-changing, their fundamental system design has only two kinds of open type and encloseds.In open system, fluid is all got back to 4～6 times of fuel tanks to the pump duty volume size, so that the variation of the flow of regulating system and oil temperature, steam bubble discharge and pollutant in the fluid are precipitated in fuel tank, there is deficiency, the use of the first large tank weight of the shared space of system, system is increased, and corresponding a large amount of fluid also makes system cost increase; It two is that the fuel sucking pipe size of pump is bigger, always has early stage cavitation or cavitation phenomenons to produce in the pipe.In closed system, main pump compensates flow and temperature variation with regulating system by the slippage pump fuel feeding on the enclosed working connection.But closed system needs slippage pump, control valve and repairing pipeline, has increased energy consumption and cost.
The objective of the invention is, it provides a kind of semi-opened hydraulic circulation oil line system of part oil return, reduces volume, weight and the cost of whole system.
Technological scheme of the present invention is that under the driving of motor, pressure oil is communicated with the filler opening of fixed displacement motor by high pressure pipe line through the oil outlet of metering pump, by the requirement output torque and the rotating speed of load.The oil outlet one tunnel of fixed displacement motor is communicated with the filler opening of metering pump, and is communicated with fuel tank by fuel sucking pipe through oil returning tube, adjustable restrictive valve; Another road is communicated with fuel tank by return tube through oil returning tube, another adjustable restrictive valve, relief valve in parallel between the oil outlet of fixed displacement motor and high pressure pipe line.
The invention will be further described below in conjunction with accompanying drawing.
Fig. 1, semi-opened hydraulic circulation oil line system;
Fig. 2, the present invention are applied to yacht hydraulic driving propeller system.
As shown in Figure 1, metering pump 2(also can be the variable displacement pump of external leakage) under the driving of motor 1, supply pressure oil to hydraulic system, the oil outlet of metering pump 2 also can be the variable-displacement oil motor of external leakage through high pressure pipe line and fixed displacement motor 4() filler opening be connected, high pressure pipe line also can in parallelly be made the relief valve 3 that safety valve uses with the oil outlet pipeline enclosure of fixed displacement motor 4, fixed displacement motor 4 is under the effect of pressure oil, export adjustable moment of torsion and rotating speed by the requirement of load 5, series connection adjustable restrictive valve B is communicated with the filler opening of metering pump 2 on the oil returning tube of fixed displacement motor 4 oil outlets, and is communicated with fuel tank 10 by fuel sucking pipe 9.Series connection adjustable restrictive valve A is communicated with fuel tank 10 by return tube 8 on the oil returning tube of fixed displacement motor 4 oil outlets.Like this, the filler opening of metering pump 2 is directly got back in the oil return of fixed displacement motor 4 oil outlets after the oil returning tube major part is by can regulate device B, and all the other partly flow back into fuel tank 10 through adjustable restrictive valve A and return tube 8.Also can be at adjustable restrictive valve A and 8 of return tubes connect successively oil purifier 6 and cooler 7.The oil suction of metering pump 2 then by fuel tank 10 through the filler opening of fuel sucking pipe 9 to metering pump 2, that is to say, owing to add that in the oil returning tube of system two simple adjustable restrictive valve A, B are to play shunting action, make the sub-fraction of system's fluid form local circulation in oil return and oil suction place, make system both can obtain using the advantage of fuel tank, the volume of fuel tank is greatly reduced.Hydraulic element described in the present invention all can use arbitrary relevant elements of standard code.
As shown in Figure 2, oil-way system of the present invention is applied to yacht hydraulic driving propeller system, compared to Figure 1 the system oil-way design is identical, different is that metering pump 2 is driven by petrol engine 11, fixed displacement motor 4 is two-way oil motor, its drives and control load 5(is a propeller cavitation) speed and the thrust of motion, the sense of rotation of propeller cavitation is subjected to the control of 3-position 4-way directional control valve 12, and directional control valve 12 can be arranged in the arbitrary position of being convenient to operate of yacht, and this The Application of Technology economic benefit is very significant.
The hydraulic system that this is new is applied to numerous pumps, when motor is common to little fuel tank with a plurality of hydraulic systems of mixing that oil cylinder is formed, must be correct and the size of optimal design fuel tank and fuel sucking pipe, must guarantee is not influencing the moving of system works, under the prerequisite of static characteristic, can satisfy transient state and stable state oil suction pressure to pump, the requirement that flow and system's fluid work temperature rise are regulated, this will use can be for the optimizing Design Software of transferring the possession of, find out different system, under different operating modes, part reasonable and that optimize flows back to the flow of fuel tank and the appropriate ratio between system's total discharge.
The present invention compared with prior art its advantage is:
1. owing to adopt the partly technical scheme of oil return, the volume of fuel tank is reduced significantly (reaching as high as more than 80%), the relevant component sizes such as while oil return pipe, fuel sucking pipe, oil-filter pipe, cooler are corresponding reducing also, is convenient to the installation of total system, reduces cost;
2. little fuel tank height is put installation, and the oil absorption of pump is improved; The simultaneously minimizing of hydraulic oil, the utmost point is beneficial to the raising of system's oil cleanliness, is convenient to adopt high-precision Hydraulic Elements so that system upgrade is regenerated;
3. compare with the closed oil circuit system, no slippage pump, control valve and repairing pipeline reduce energy consumption and reduce cost.
Claims (2)
1, a kind of semi-opened hydraulic circulation oil line system, feature of the present invention is, under the driving of motor [1], pressure oil is through the oil outlet of metering pump [2], be communicated with by the filler opening of high pressure pipe line with fixed displacement motor [4], requirement output torque and rotating speed by load [5], the oil outlet one tunnel of fixed displacement motor [4] is through oil returning tube, adjustable restrictive valve B is communicated with the filler opening of metering pump [2], and be communicated with fuel tank [10] by fuel sucking pipe [9], another road is through oil returning tube, adjustable restrictive valve A, be communicated with relief valve in parallel [3] between the oil outlet of fixed displacement motor [4] and high pressure pipe line with fuel tank [10] by return tube [8].
2, oil-way system according to claim 1 is characterized in that, connect successively between adjustable restrictive valve A and return tube (8) oil purifier (6) and cooler (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109676 CN1070455A (en) | 1992-08-20 | 1992-08-20 | Semi-opened hydraulic circulation oil line system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92109676 CN1070455A (en) | 1992-08-20 | 1992-08-20 | Semi-opened hydraulic circulation oil line system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1070455A true CN1070455A (en) | 1993-03-31 |
Family
ID=4944292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92109676 Pending CN1070455A (en) | 1992-08-20 | 1992-08-20 | Semi-opened hydraulic circulation oil line system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1070455A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179513A (en) * | 2011-03-30 | 2011-09-14 | 成都四星液压制造有限公司 | Variable control device of hydraulic system for magnetic material automatic wet pressing machine |
| CN102954886A (en) * | 2012-11-06 | 2013-03-06 | 南京工程学院 | Device for measuring stiffness of pilot spring |
| CN104196788A (en) * | 2014-08-27 | 2014-12-10 | 沈阳远大科技园有限公司 | Hydraulically-driven corn straw crushing and returning device and use method thereof |
| CN106395724A (en) * | 2016-10-26 | 2017-02-15 | 江苏康友医用器械有限公司 | Oil supply system capable of preventing diluent from volatilizing during silicification of medical syringe needles |
-
1992
- 1992-08-20 CN CN 92109676 patent/CN1070455A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179513A (en) * | 2011-03-30 | 2011-09-14 | 成都四星液压制造有限公司 | Variable control device of hydraulic system for magnetic material automatic wet pressing machine |
| CN102954886A (en) * | 2012-11-06 | 2013-03-06 | 南京工程学院 | Device for measuring stiffness of pilot spring |
| CN102954886B (en) * | 2012-11-06 | 2015-06-03 | 南京工程学院 | Device for measuring stiffness of pilot spring |
| CN104196788A (en) * | 2014-08-27 | 2014-12-10 | 沈阳远大科技园有限公司 | Hydraulically-driven corn straw crushing and returning device and use method thereof |
| CN106395724A (en) * | 2016-10-26 | 2017-02-15 | 江苏康友医用器械有限公司 | Oil supply system capable of preventing diluent from volatilizing during silicification of medical syringe needles |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201363332Y (en) | Large inertia variable frequency volume bypass throttling speed governing system | |
| CN100593646C (en) | Unpowered oil supplied direct drive displacement control electrohydraulic servo- closed type oil source system | |
| CN101158365A (en) | Direct driving type volume servo control power installation | |
| CN202370877U (en) | Hydraulic ventilator adjusting loop for motor vehicle, building machinery or hoisting equipment | |
| CN201461601U (en) | Electrical control hydraulic unidirectional constant speed device | |
| CN100523566C (en) | Hydraulic driving mechanism for mobile vehicles | |
| CN1070455A (en) | Semi-opened hydraulic circulation oil line system | |
| CN104695852A (en) | Pneumatic multi-motor coal-bed drill with hybrid power device | |
| CN204398866U (en) | High-power all-hydraulic liquid nitrogen pump actuating device and direct-combustion type liquid nitrogen pump truck | |
| CN101337650B (en) | Energy control valve of hydraulic electric lift truck | |
| CN2049642U (en) | Hydraulic system for scraper | |
| CN207715476U (en) | A kind of multipurpose load-sensitive hydraulic test bench | |
| CN101363460A (en) | Closed hydraulic system for synchronous chip sealer | |
| CN201339536Y (en) | Current distributor for axial plunger variable hydraulic motor | |
| CN201245422Y (en) | Full hydraulic electric forklift energy control valve | |
| CN208089653U (en) | It is a kind of that a grade variable system is had based on digital hydraulic pump/motor working in double modes characteristic | |
| CN1405031A (en) | Novel forklift-walking speed-regulating device | |
| CN2589425Y (en) | Load sensitive confluent hydraulic system for loader | |
| CN112943205A (en) | Multifunctional equipment integrating sand mulling and fracturing functions | |
| CN204691881U (en) | A kind of hydraulic fan device | |
| CN114753814B (en) | Stepless variable pumping system and related equipment | |
| CN202483996U (en) | Cooling protection device for hydraulic reversing system | |
| CN201587407U (en) | Cableway single-power hydraulic station adopting reducing valve for speed regulation | |
| CN219568703U (en) | Road washing vehicle | |
| CN214887013U (en) | Multifunctional equipment integrating sand mulling and fracturing functions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication |