CN112160947A - Intelligent energy-saving hydraulic power system - Google Patents
Intelligent energy-saving hydraulic power system Download PDFInfo
- Publication number
- CN112160947A CN112160947A CN202011168701.8A CN202011168701A CN112160947A CN 112160947 A CN112160947 A CN 112160947A CN 202011168701 A CN202011168701 A CN 202011168701A CN 112160947 A CN112160947 A CN 112160947A
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- Prior art keywords
- oil
- hydraulic
- cylinder
- cylinder barrel
- oil tank
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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
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/06—Servomotor systems without provision for follow-up action; Circuits therefor involving features specific to the use of a compressible medium, e.g. air, steam
- F15B11/072—Combined pneumatic-hydraulic systems
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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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
Abstract
The invention discloses an intelligent energy-saving hydraulic power system, which comprises an oil tank, an output oil cylinder, an oil pump and an oil pump motor, wherein an oil tank air cavity is formed above hydraulic oil in the oil tank, a hydraulic oil output port and a hydraulic oil input port are arranged at the lower part of the oil tank, a compressed air input port communicated with the oil tank air cavity is arranged at the upper part of the oil tank, the hydraulic oil output port of the oil tank is communicated with an oil inlet of the oil pump through an oil conveying pipe, an oil outlet of the oil pump is respectively connected with a first oil pipe and a second oil pipe, and a first electromagnetic valve is arranged on the first oil pipe, the second oil pipe is connected with an electromagnetic directional valve, the electromagnetic directional valve is respectively connected with an oil tank hydraulic oil input port and a hydraulic gas compression cylinder through an oil conveying pipe, a compressed air outlet of the hydraulic gas compression cylinder is communicated with an oil tank compressed air input port, the output oil cylinder is connected with an oil return pipe, and the oil return pipe is provided with a second electromagnetic valve. The intelligent energy-saving hydraulic power system has a good energy-saving effect.
Description
Technical Field
The invention relates to a hydraulic oil cylinder, in particular to an intelligent energy-saving hydraulic power system.
Background
At present, the power of the known hydraulic power system is in direct proportion to the input pressure and the flow, the heavier the load is, the larger the power consumption is, and therefore, the energy consumption cannot be saved.
Disclosure of Invention
In order to overcome the defect that the energy consumption of the conventional hydraulic power system cannot be saved, the invention provides an intelligent energy-saving hydraulic power system which can save 60-80% of energy when an object with fixed mass is repeatedly lifted and lowered under the same environment and the same working condition.
The purpose of the invention is realized by the following technical scheme: an intelligent energy-saving hydraulic power system comprises an oil tank, an output oil cylinder, an oil pump and an oil pump motor, wherein the oil tank is used for storing hydraulic oil, an oil tank air cavity is formed above the hydraulic oil, a hydraulic oil output port and a hydraulic oil input port are arranged on the lower portion of the oil tank, a compressed air input port communicated with the oil tank air cavity is arranged on the upper portion of the oil tank, the hydraulic oil output port of the oil tank is communicated with an oil inlet of the oil pump through an oil conveying pipe, an oil outlet of the oil pump is respectively connected with a first oil pipe and a second oil pipe, the first oil pipe is communicated with the output oil cylinder, a first electromagnetic valve is arranged on a first oil pipe pipeline, the second oil pipe is connected with an electromagnetic directional valve, the electromagnetic directional valve is respectively connected with the hydraulic oil input port of the oil tank and a hydraulic gas compression cylinder, the output oil cylinder is connected with an oil return pipeline, and a second electromagnetic valve is arranged on the oil return pipeline.
Furthermore, the hydraulic gas compression cylinder comprises a middle gas valve block, the upper end and the lower end of the middle gas valve block are respectively connected with an upper cylinder barrel and a lower cylinder barrel, the tail ends of the upper cylinder barrel and the lower cylinder barrel are sealed and are respectively provided with a hydraulic oil hole I, a piston rod I penetrates through the middle gas valve block and the two ends of the middle gas valve block respectively extend to the upper cylinder barrel and the lower cylinder barrel, pistons are respectively installed at the two ends of the piston rod I, an upper gas inlet valve and an upper gas outlet valve which are communicated with the upper cylinder barrel and a lower gas inlet valve and a lower gas outlet valve which are communicated with the lower cylinder barrel are arranged on the middle gas valve block, the upper gas outlet valve and the lower gas outlet valve are communicated with a compressed air inlet of the oil tank through an exhaust pipeline, and the hydraulic oil holes I.
Furthermore, an oil pressure sensor is arranged on the second oil pipe, and the electromagnetic directional valve is switched according to signals of the oil pressure sensor.
Further, a pressure detection sensor for detecting the internal pressure of the oil tank is arranged on the oil tank.
Further, a safety valve is arranged on the oil tank.
Further, after the compressed gas is filled into the oil tank, the initial output force of the hydraulic oil is smaller than or equal to the weight of the working object.
Furthermore, the original volume of the gas space in the oil tank and the volume change of the gas space in the oil tank after the piston rod of the output oil cylinder extends out are controlled within 10 percent.
Further, still include the pressure transform jar, the pressure transform jar includes big cylinder, little cylinder, intermediate block, piston rod II, big piston, little piston, be connected through the intermediate block between big cylinder and the little cylinder, the end closure of big cylinder, little cylinder just all is equipped with hydraulic pressure oilhole II, II one ends of piston rod are located big cylinder and are connected with big piston, and II other ends of piston rod are located little cylinder and are connected with little piston, be equipped with the air vent on the intermediate block, the hydraulic pressure oilhole of big cylinder end is through defeated oil pipe and oil tank intercommunication, the hydraulic pressure oilhole of little cylinder end is through defeated oil pipe and output cylinder intercommunication and be equipped with the third solenoid valve on this defeated oil pipe.
The intelligent energy-saving hydraulic power system utilizes the characteristic of large gas compression ratio, adds a certain amount of hydraulic oil into an oil tank to be output as a power medium, leaves most of gas space, fills gas with certain pressure into the oil tank through a hydraulic gas compression cylinder, and ensures that the initial output force of the hydraulic oil in the oil tank is less than or equal to the weight of a working object, so that the weight of the object is basically offset by the initial output force of the pre-charged hydraulic oil, and the hydraulic power system only needs small output force to overcome the friction force of a piston rod and a piston during lifting work and can generate a change force with the change of the gas pressure caused by the change of the volume of the hydraulic oil in the oil tank; the volume ratio of the original gas volume in the oil tank to the volume of the changed gas in operation is controlled within 10 percent, the energy can be saved by about 60 to 80 percent, and the ratio of the original volume of the gas space in the oil tank to the volume of the changed gas space in the oil tank after the piston rod of the oil cylinder extends out is smaller and better; when the device is used, the gas is pre-filled once, continuous inflation is not needed, automatic supplement can be realized if leakage occurs, and no waste gas is discharged, so that the device is beneficial to environmental protection; through setting up the pressure change jar, can make the oil flow greatly increased, can realize that the output cylinder rises fast.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic view of the construction of the hydraulic gas compression cylinder of the present invention.
Fig. 3 is a schematic view of the construction of the pressure conversion cylinder of the present invention.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1 to fig. 3, the intelligent energy-saving hydraulic power system of the present embodiment includes an oil tank 100, an output oil cylinder 200, an oil pump 300, an oil pump motor 400, an electromagnetic directional valve 600, a hydraulic gas compression cylinder 700, an oil pressure sensor 800, and a pressure conversion cylinder 900.
The oil tank 100 is manufactured according to a medium-pressure oil tank standard, power medium hydraulic oil is arranged at the bottom of the oil tank 100, an oil tank air cavity is formed in the upper portion of the oil tank 100, a hydraulic oil output port and a hydraulic oil input port are formed in the lower portion of the oil tank 100, a compressed air input port communicated with the oil tank air cavity is formed in the upper portion of the oil tank 100, a pressure detection sensor used for detecting the internal pressure of the oil tank 100 is arranged on the oil tank 100, and the oil tank is controlled to be pressurized by monitoring. The oil tank 100 is provided with a safety valve to ensure that the internal pressure of the oil tank does not exceed the designed pressure.
The hydraulic oil delivery outlet of oil tank 100 passes through defeated oil pipe and oil pump 300's oil inlet intercommunication, the oil-out of oil pump 300 is connected with first oil pipe and second oil pipe respectively, first oil pipe and output cylinder 200 intercommunication, and be provided with first solenoid valve 501 on first oil pipe way, second oil pipe is connected with electromagnetic directional valve 600, electromagnetic directional valve 600 connects oil tank hydraulic oil input port and hydraulic gas compression jar 700 respectively through defeated oil pipe, the compressed air discharge port and the oil tank compressed air input port intercommunication of hydraulic gas compression jar 700, output cylinder 200 is connected with back oil pipe way, just be provided with second solenoid valve 502 on the back oil pipe way.
As shown in fig. 2, the hydraulic gas compression cylinder 700 includes a middle gas valve block 701, the upper and lower ends of the middle gas valve block 701 are respectively connected with an upper cylinder 702 and a lower cylinder 703, the ends of the upper cylinder 702 and the lower cylinder 703 are closed and are respectively provided with a hydraulic oil hole i 704, a piston rod i 705 penetrates through the middle gas valve block 701, the two ends of the piston rod i 705 extend to the upper cylinder 702 and the lower cylinder 703, two ends of the piston rod i 705 are respectively provided with a piston 706, the middle gas valve block 701 is provided with an upper gas valve 707 and an upper gas outlet valve 708 which are communicated with the upper cylinder 702, and a lower gas inlet valve 709 and a lower gas outlet valve 710 which are communicated with the lower cylinder 703, the upper gas outlet valve 708 and the lower gas outlet valve 710 are communicated with an inlet of compressed air of the oil tank through a gas exhaust pipeline, and the hydraulic oil holes i 704 of the upper cylinder 702 and the lower cylinder 703. And an oil pressure sensor 800 is arranged on the second oil pipe, and the electromagnetic directional valve 600 is switched according to a signal of the oil pressure sensor 800.
As shown in fig. 3, the pressure conversion cylinder 900 includes a large cylinder 901, a small cylinder 902, an intermediate block 903, a piston rod ii 904, a large piston 905, and a small piston 906, the large cylinder 901 and the small cylinder 902 are connected through the intermediate block 903, the ends of the large cylinder 901 and the small cylinder 902 are closed and both provided with a hydraulic oil hole ii 907, one end of the piston rod ii 904 is located in the large cylinder 901 and connected with the large piston 905, the other end of the piston rod ii 904 is located in the small cylinder 902 and connected with the small piston 906, the intermediate block 903 is provided with a vent 908, the hydraulic oil hole at the end of the large cylinder 901 is communicated with the oil tank 100 through an oil pipeline, the hydraulic oil hole at the end of the small cylinder 902 is communicated with the output oil cylinder 200 through an oil pipeline, and the oil pipeline is provided with a third electromagnetic valve 503.
After the oil tank is filled with compressed gas, the initial output force of the hydraulic oil is less than or equal to the weight of the working object. The original volume of the gas space in the oil tank 100 and the change of the gas space volume in the oil tank 100 after the piston rod of the output oil cylinder 200 extends are controlled within 10 percent.
The working process of the intelligent energy-saving hydraulic power system comprises the following steps: after the oil is added to the oil tank 100, the first electromagnetic valve 501, the second electromagnetic valve 502 and the third electromagnetic valve 503 are all closed, the oil pump motor 400 is started, hydraulic oil flows to the hydraulic gas compression cylinder 700 through the second oil pipe and the electromagnetic directional valve 600, oil is fed into the hydraulic oil hole I at the upper end of the hydraulic gas compression cylinder 700, the piston rod I705 moves downwards, the upper air outlet valve 708 is opened, the upper air inlet valve 707 is closed, the upper cylinder barrel 702 of the hydraulic gas compression cylinder 700 compresses air, oil returns from the hydraulic oil hole I at the lower end, the lower air inlet valve 709 is opened, the lower air outlet valve 710 is closed, the oil pressure sensor 800 detects oil pressure and controls the electromagnetic directional valve 600 to switch oil paths, oil returns to the hydraulic oil hole I at the upper end of the hydraulic gas compression cylinder 700, oil is fed into the hydraulic oil hole I at the lower end, the cylinder barrel 700 compresses air, the compressed gas is. The oil tank can start to work after being pressurized, the oil pump motor 400 is operated, the first electromagnetic valve 501 is opened, and when the output oil cylinder 200 is fully extended, the pressure is increased, the first electromagnetic valve 501 is controlled to be closed, and the oil pump motor 400 is stopped to operate. When the hydraulic oil descends, the second electromagnetic valve 502 is opened, and the hydraulic oil in the output oil cylinder 200 is released back to the oil tank.
When the hydraulic oil needs to be quickly lifted, the oil pump motor 400 is started, the third electromagnetic valve 503 is opened at the same time, hydraulic oil is injected into the pressure conversion cylinder 900 under the action of the air pressure of the oil tank, the hydraulic oil in the small cylinder 902 of the pressure conversion cylinder 900 enters the output oil cylinder 200, so that the flow of high-pressure oil injected into the output oil cylinder 200 is greatly increased, and the output oil cylinder 200 can be quickly lifted; after the output oil cylinder 200 is completely lifted, the oil pump motor 400 continues to pressurize, hydraulic oil is injected into the small cylinder 902 of the pressure conversion cylinder 900, the piston rod II 904 is reset, then the first electromagnetic valve 501 and the third electromagnetic valve 503 are closed, and the oil pump motor 400 is closed, so that the quick function is completed.
Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (8)
1. The utility model provides an energy-conserving hydraulic power system of intelligence, includes oil tank (100), output cylinder (200), oil pump (300) and oil pump motor (400), its characterized in that: the oil tank (100) is used for storing hydraulic oil, an oil tank air cavity is formed above the hydraulic oil, a hydraulic oil output port and a hydraulic oil input port are arranged on the lower portion of the oil tank (100), a compressed air input port communicated with the oil tank air cavity is arranged on the upper portion of the oil tank (100), the hydraulic oil output port of the oil tank (100) is communicated with an oil inlet of an oil pump (300) through an oil conveying pipe, an oil outlet of the oil pump (300) is respectively connected with a first oil pipe and a second oil pipe, the first oil pipe is communicated with an output oil cylinder (200), a first electromagnetic valve (501) is arranged on a first oil pipe pipeline, the second oil pipe is connected with an electromagnetic directional valve (600), the electromagnetic directional valve (600) is respectively connected with the hydraulic oil input port of the oil tank and a hydraulic gas compression cylinder (700) through the oil conveying pipe, a compressed air discharge port of the, the output oil cylinder (200) is connected with an oil return pipeline, and a second electromagnetic valve (502) is arranged on the oil return pipeline.
2. The intelligent energy-saving hydraulic power system as claimed in claim 1, wherein: the hydraulic gas compression cylinder (700) comprises a middle gas valve block (701), the upper end and the lower end of the middle gas valve block (701) are respectively connected with an upper cylinder barrel (702) and a lower cylinder barrel (703), the tail ends of the upper cylinder barrel (702) and the lower cylinder barrel (703) are closed and are respectively provided with a hydraulic oil hole I (704), a piston rod I (705) penetrates through the middle gas valve block (701), the two ends of the piston rod I (705) respectively extend to the upper cylinder barrel (702) and the lower cylinder barrel (703), pistons (706) are respectively installed at the two ends of the piston rod I (705), an upper gas inlet valve (707) and an upper gas outlet valve (708) which are communicated with the upper cylinder barrel (702) and a lower gas inlet valve (709) and a lower gas outlet valve (710) which are communicated with the lower cylinder barrel (703) are arranged on the middle gas valve (701) block, the upper gas outlet valve (708) and the lower gas outlet valve (710), The hydraulic oil hole I (704) of the lower cylinder barrel (703) is respectively communicated with the electromagnetic directional valve (600) through an oil delivery pipe.
3. The intelligent energy-saving hydraulic power system as claimed in claim 2, wherein: and an oil pressure sensor (800) is arranged on the second oil pipe, and the electromagnetic directional valve (600) is switched according to signals of the oil pressure sensor (800).
4. The intelligent energy-saving hydraulic power system as claimed in claim 1, wherein: the oil tank (100) is provided with a pressure detection sensor for detecting the internal pressure of the oil tank (100).
5. The intelligent energy-saving hydraulic power system as claimed in claim 1, wherein: the oil tank (100) is provided with a safety valve.
6. The intelligent energy-saving hydraulic power system as claimed in claim 1, wherein: after the oil tank is filled with compressed gas, the initial output force of the hydraulic oil is less than or equal to the weight of the working object.
7. The intelligent energy-saving hydraulic power system as claimed in claim 6, wherein: the original volume of the gas space in the oil tank (100) and the change of the gas space volume in the oil tank (100) after the piston rod of the output oil cylinder (200) extends out are controlled within 10 percent.
8. An intelligent energy-saving hydraulic power system as claimed in any one of claims 1 to 7, wherein: the piston type hydraulic cylinder further comprises a pressure conversion cylinder (900), wherein the pressure conversion cylinder (900) comprises a large cylinder barrel (901), a small cylinder barrel (902), a middle block (903), a piston rod II (904), a large piston (905) and a small piston (906), the large cylinder barrel (901) is connected with the small cylinder barrel (902) through an intermediate block (903), the tail ends of the large cylinder barrel (901) and the small cylinder barrel (902) are closed and are provided with hydraulic oil holes II (907), one end of the piston rod II (904) is positioned in the large cylinder barrel (901) and connected with the large piston (905), the other end of the piston rod II (904) is positioned in the small cylinder barrel (902) and connected with the small piston (906), the middle block (903) is provided with a vent hole (908), the hydraulic oil hole at the end of the large cylinder barrel (901) is communicated with the oil tank (100) through an oil conveying pipe, the hydraulic oil hole at the end of the small cylinder barrel (902) is communicated with the output oil cylinder (200) through an oil delivery pipe, and a third electromagnetic valve (503) is arranged on the oil delivery pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011168701.8A CN112160947A (en) | 2020-10-28 | 2020-10-28 | Intelligent energy-saving hydraulic power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011168701.8A CN112160947A (en) | 2020-10-28 | 2020-10-28 | Intelligent energy-saving hydraulic power system |
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| Publication Number | Publication Date |
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| CN112160947A true CN112160947A (en) | 2021-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011168701.8A Pending CN112160947A (en) | 2020-10-28 | 2020-10-28 | Intelligent energy-saving hydraulic power system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151393A (en) * | 2021-12-08 | 2022-03-08 | 中国第一重型机械股份公司 | Supercharger structure |
-
2020
- 2020-10-28 CN CN202011168701.8A patent/CN112160947A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114151393A (en) * | 2021-12-08 | 2022-03-08 | 中国第一重型机械股份公司 | Supercharger structure |
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Effective date of registration: 20220615 Address after: 418000 1st floor North building, building 1, standardization plant, Huaihua Industrial Park, Hunan Province Applicant after: HUNAN SKYROADN INTELLIGENT TECHNOLOGY Co.,Ltd. Address before: 418000 group 9, Xinying village, lanli Town, Mayang Miao Autonomous County, Huaihua City, Hunan Province Applicant before: Liu Tao |