CN104074812A - Hydraulic pressurizing energy recovery system and control device - Google Patents
Hydraulic pressurizing energy recovery system and control device Download PDFInfo
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- CN104074812A CN104074812A CN201410332680.7A CN201410332680A CN104074812A CN 104074812 A CN104074812 A CN 104074812A CN 201410332680 A CN201410332680 A CN 201410332680A CN 104074812 A CN104074812 A CN 104074812A
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Abstract
Provided are a hydraulic pressurizing energy recovery system and a control device. Two sets hydraulic pressurizing energy recovery systems are provided, the first set hydraulic pressurizing energy recovery system is composed of a first solenoid valve, a first hydraulic pressurizer, a first check valve, a second check valve, a third check valve and a fourth check valve, and the second set hydraulic pressurizing energy recovery system is composed of a second solenoid valve, a second hydraulic pressurizer, a fifth check valve, a sixth check valve, a seventh check valve and an eighth check valve. The control device of each hydraulic pressurizing energy recovery system comprises an electronic control unit and a flow sensor. The rest hydraulic devices comprise an energy accumulator and an oil tank. Low-pressure oil is converted into high-pressure oil through a first pressure amplifier and a second pressure amplifier and is stored in the energy accumulator, and pressurizing energy recovery is completed. According to signals of the flow sensor, the electronic control unit controls the first solenoid valve and the second solenoid valve to be opposite in working position, and controls the first pressure amplifier and the second pressure amplifier to be opposite in moving direction, therefore hydraulic shocking is avoided.
Description
Technical field
The present invention relates to a kind of hydraulic booster energy-recuperation system and control gear, especially relate to the low pressure oil supercharging in hydraulic system, and the fluid after supercharging is carried out to the device of collection of energy.
Background technique
In hydraulic system, executive component is as after oil hydraulic cylinder, oil hydraulic motor action, it discharges low pressure fluid conventionally, especially in the engineering machinery for example excavation machinery, loading machine and the crane gear that have larger potential energy, some executive component of these equipment for example digging arm, shear leg, conventionally in the time declining, there is larger potential energy, this potential energy can impel the executive component of hydraulic system to discharge a large amount of low pressure fluid, if this low pressure fluid can not make full use of and directly flow back to fuel tank, the energy of these low pressure fluid will waste.
In addition,, in the time that system rated pressure is low, need individually the element of high pressure often to need additional independent high pressure fuel supply pump, and additional high-pressure pump has not only increased the volume of system, has also improved cost.
Traditional hydraulic intensifier generally only has a supercharging stroke, only in the time that a direction is moved, can realize supercharging at piston, when backward stroke of the piston, can not realize supercharging, and in same time, supercharging number of times is insufficient.
Summary of the invention
For the problems referred to above of the prior art, the invention provides a kind of hydraulic booster energy-recuperation system and control gear, this device can overcome the problems referred to above, convert a large amount of low pressure fluid to high-voltage oil liquid and be stored in accumulator, and in the time that system needs high-voltage oil liquid by high-voltage oil liquid supply system.
Technological scheme of the present invention is for providing a kind of hydraulic booster energy-recuperation system and control gear, comprise accumulator, the first solenoid valve, the first hydraulic intensifier, the first one-way valve, the second one-way valve, the 3rd one-way valve, the 4th one-way valve, flow transducer, the second solenoid valve, the second hydraulic intensifier, the 5th solenoid valve, the 6th solenoid valve, the 7th solenoid valve, the 8th solenoid valve, electronic control unit, fuel tank, the first hydraulic intensifier right side low-pressure cavity, the first hydraulic intensifier right side hyperbaric chamber, the first hydraulic intensifier left side hyperbaric chamber, the first hydraulic intensifier left side low-pressure cavity, left hand piston head, piston rod, divide chamber layer, right hand piston head, spring, the second hydraulic intensifier right side low-pressure cavity, the second hydraulic intensifier right side hyperbaric chamber, the second hydraulic intensifier left side hyperbaric chamber, the second hydraulic intensifier left side low-pressure cavity, it is characterized in that:
Hydraulic booster energy-recuperation system is established two groups altogether, first group of hydraulic booster energy-recuperation system is by the first solenoid valve, the first hydraulic intensifier, the first one-way valve, the second one-way valve, the 3rd one-way valve, the 4th one-way valve composition, second group of hydraulic booster energy-recuperation system is by the second solenoid valve, the second hydraulic intensifier, the 5th one-way valve, the 6th one-way valve, the 7th one-way valve, the 8th one-way valve composition, the first solenoid valve is identical with the structure of the second solenoid valve, be two position four-way solenoid valves, and the Placement in oil circuit is identical, the first solenoid valve filler opening connects low pressure fuel pipe, oil outlet is connected with fuel tank, be connected respectively the first hydraulic intensifier left side low-pressure cavity and the first hydraulic intensifier right side low-pressure cavity with two interfaces of executive component, the first solenoid valve is in the time of left lateral position, the fluid of low pressure fuel pipe flows into the first hydraulic intensifier left side low-pressure cavity, the first hydraulic intensifier right side low-pressure cavity fluid flows back to fuel tank, the first solenoid valve is in the time of right lateral position, the fluid of low pressure fuel pipe flows into the first hydraulic intensifier right side low-pressure cavity, the first hydraulic intensifier left side low-pressure cavity fluid flows back to fuel tank, the second solenoid valve filler opening connects low pressure fuel pipe, oil outlet is connected with fuel tank, be connected respectively the second hydraulic intensifier left side low-pressure cavity and the second hydraulic intensifier right side low-pressure cavity with two interfaces of executive component, the second solenoid valve is in the time of left lateral position, the fluid of low pressure fuel pipe flows into the second hydraulic intensifier left side low-pressure cavity, the second hydraulic intensifier right side low-pressure cavity fluid flows back to fuel tank, the second solenoid valve is in the time of right lateral position, the fluid of low pressure fuel pipe flows into the second hydraulic intensifier right side low-pressure cavity, and the second hydraulic intensifier left side low-pressure cavity fluid flows back to fuel tank.
The first hydraulic intensifier is identical with the second hydraulic intensifier structure, taking the first hydraulic intensifier as example description architecture, the first hydraulic intensifier profile is cylindric, by a point chamber layer, the first hydraulic intensifier right side low-pressure cavity, the first hydraulic intensifier right side hyperbaric chamber, the first hydraulic intensifier left side hyperbaric chamber, the first hydraulic intensifier left side low-pressure cavity, piston (comprises left hand piston head, piston rod, right hand piston head) composition, point chamber layer is positioned at the neutral position of the first hydraulic intensifier inner chamber, for circular ring, integral with the first hydraulic intensifier, the dead in line of axis and the first hydraulic intensifier, piston rod passes from circular hole, the circumference of circular hole is wrapping one deck rubber layer, seal, prevent that fluid from flowing between the first hydraulic intensifier left side hyperbaric chamber and the first hydraulic intensifier right side hyperbaric chamber, piston is made up of left hand piston head, piston rod, right hand piston head, and point-blank, and piston rod is hollow for left hand piston head, the axis of right hand piston head and the axis of piston rod, and its Main Function is the inertia reducing in pistons work stroke, the radius of the cross section of left hand piston head and right hand piston head is piston rod cross section exradius
/ 2 times, the cross-section area of piston head is 3/4 times of piston rod sectional area that cylindrical encloses, the structure of left hand piston head is identical with the structure of right hand piston head, taking left hand piston head as example, on end face at left hand piston head away from piston rod, there are six springs to be distributed on the circumference that radius is 3/4 left hand piston head radius, its Main Function is inertia and the impact while reducing piston stroke arrival two ends, left and right, and according to the transfer principle of the elastic potential energy of spring and kinetic energy, in the time of backward stroke of the piston, give a determined power, the inner left wall of left hand piston head and the first hydraulic intensifier forms the first hydraulic intensifier left side low-pressure cavity, left hand piston head forms the first hydraulic intensifier left side hyperbaric chamber with a point chamber layer, right hand piston head forms the first hydraulic intensifier right side hyperbaric chamber with a point chamber layer, the right side inwall of right hand piston head and the first hydraulic intensifier forms the first hydraulic intensifier right side low-pressure cavity, the volume sum of the first hydraulic intensifier left side low-pressure cavity and the first hydraulic intensifier left side hyperbaric chamber equals the volume sum of the first hydraulic intensifier right side low-pressure cavity and the first hydraulic intensifier right side hyperbaric chamber.
The entrance of the first one-way valve is connected with low pressure fuel pipe, the outlet of the first one-way valve is connected with flow transducer with the gateway of the first hydraulic intensifier left side hyperbaric chamber, this one-way valve circulating direction is that low pressure fluid flows into the first hydraulic intensifier left side hyperbaric chamber, input the first pressurized machine left side hyperbaric chamber for low pressure fluid, and prevent that high pressure oil from flowing out fluid while entering accumulator and flowing backwards from the first hydraulic intensifier left side hyperbaric chamber.
The entrance of the second one-way valve is connected with low pressure fuel pipe, the gateway of the outlet of the second one-way valve and the first hydraulic intensifier right side hyperbaric chamber is connected with the entrance of the 4th one-way valve, this one-way valve is inputted the first pressurized machine right side hyperbaric chamber for low pressure fluid, and prevents that high pressure oil from flowing out fluid while entering accumulator and flowing backwards from the first hydraulic intensifier right side hyperbaric chamber.
The entrance of the 3rd one-way valve is connected with flow transducer, the outlet of the 3rd one-way valve is connected with the outlet of the 4th one-way valve with accumulator, this one-way valve is inputted accumulator from the first hydraulic intensifier left side hyperbaric chamber through flow transducer for high-voltage oil liquid, and prevents that high-voltage oil liquid from flowing backwards.
The entrance of the 4th one-way valve is connected with the outlet of the second one-way valve with the gateway of the first hydraulic intensifier right side hyperbaric chamber, the outlet of the 4th one-way valve is connected with the outlet of the 3rd one-way valve with accumulator, this one-way valve is inputted accumulator for high-voltage oil liquid from the first hydraulic intensifier right side hyperbaric chamber, and prevents that high-voltage oil liquid from flowing backwards.
The entrance of the 5th one-way valve is connected with low pressure fuel pipe, the outlet of the 5th one-way valve is connected with the entrance of the 7th one-way valve with the gateway of the second hydraulic intensifier left side hyperbaric chamber, this one-way valve circulating direction is that low pressure fluid flows into the second hydraulic intensifier left side hyperbaric chamber, input the second pressurized machine left side hyperbaric chamber for low pressure fluid, and prevent that high pressure oil from flowing out fluid while entering accumulator and flowing backwards from the second hydraulic intensifier left side hyperbaric chamber.
The entrance of the 6th one-way valve is connected with low pressure fuel pipe, the gateway of the outlet of the 6th one-way valve and the second hydraulic intensifier right side hyperbaric chamber is connected with the entrance of the 8th one-way valve, this one-way valve is inputted the second pressurized machine right side hyperbaric chamber for low pressure fluid, and preventing that high pressure oil from flowing out and entering accumulator from the second hydraulic intensifier right side hyperbaric chamber, fluid flows backwards.
The entrance of the 7th one-way valve is connected with the outlet of the 5th one-way valve with the second hydraulic intensifier left side hyperbaric chamber, the outlet of the 7th one-way valve is connected with the outlet of the 8th one-way valve with accumulator, this one-way valve is inputted accumulator for high-voltage oil liquid from the second hydraulic intensifier left side hyperbaric chamber, and prevents that high-voltage oil liquid from flowing backwards.
The entrance of the 8th one-way valve is connected with the outlet of the 6th one-way valve with the gateway of the second hydraulic intensifier right side hyperbaric chamber, the outlet of the 8th one-way valve is connected with the outlet of the 7th one-way valve with accumulator, this one-way valve is inputted accumulator for high-voltage oil liquid from the second hydraulic intensifier right side hyperbaric chamber, and prevents that high-voltage oil liquid from flowing backwards.
Accumulator is connected with the outlet of the 8th one-way valve with the outlet of the 3rd one-way valve, the outlet of the 4th one-way valve, the outlet of the 7th one-way valve, is used for collecting the high-voltage oil liquid of the first hydraulic intensifier and the generation of the second hydraulic intensifier, and stored energy, realizes energy and reclaim.
The control gear of hydraulic booster energy-recuperation system comprises electronic control unit and flow transducer, the working position of electronic control unit control the first solenoid valve and the second solenoid valve, when electronic control unit receives flux signal that flow transducer transmits when non-vanishing, electronic control unit control the first solenoid valve, at left lateral position, is controlled the second solenoid valve at right lateral position; In the time that electronic control unit receives flux signal that sensor transmits and is zero, electronic control unit control the first solenoid valve is at right lateral position, control the second solenoid valve at left lateral position, the piston that can ensure like this first hydraulic intensifier and the second hydraulic intensifier moves toward opposite direction, prevent piston same time, equidirectional motion causes excessive inertia, avoids producing fluid power simultaneously and impacts; On the branch road that flow transducer is connected with accumulator at the first hydraulic intensifier left side hyperbaric chamber, connect with the 3rd one-way valve, between the first hydraulic intensifier left side hyperbaric chamber and the 3rd one-way valve, detection the first hydraulic intensifier left side hyperbaric chamber flows to the flow of accumulator fluid.
The present invention is the advantage of prior art relatively:
1. in the engineering machinery for example excavation machinery, loading machine and the crane gear that have larger potential energy, some executive component of these equipment for example digging arm, shear leg, conventionally in the time declining, there is larger potential energy, this potential energy can promote the executive component of hydraulic system to discharge a large amount of low pressure fluid, the present invention can make full use of the potential energy in above-mentioned machinery and equipment, reclaimed, stored and be used, not only environmental protection but also economy;
2. its structure facility, simple, can reduce as the excessive inertia by electric motor and turbo charged equipment and fluid power impact;
3. accumulator can be used as high-voltage power supply and provides high pressure oil to hydraulic system, can avoid so additional independent high-pressure service pump, has both reduced the volume of system, has reduced again cost.
Brief description of the drawings
Fig. 1 is hydraulic booster energy-recuperation system of the present invention and control gear schematic diagram.
Embodiment
In figure, 1, accumulator, 2, the first solenoid valve, 3, the first hydraulic intensifier, 4, the first one-way valve, 5, the second one-way valve, 6, the 3rd one-way valve, 7, the 4th one-way valve, 8, flow transducer, 9, the second solenoid valve, 10, the second hydraulic intensifier, 11, the 5th solenoid valve, 12, the 6th solenoid valve, 13, the 7th solenoid valve, 14, the 8th solenoid valve, 15, electronic control unit, 16, fuel tank, 17, the first hydraulic intensifier right side low-pressure cavity, 18, the first hydraulic intensifier right side hyperbaric chamber, 19, the first hydraulic intensifier left side hyperbaric chamber, 20, the first hydraulic intensifier left side low-pressure cavity, 21, left hand piston head, 22, piston rod, 23, divide chamber layer, 24, right hand piston head, 25, spring, 26, the second hydraulic intensifier right side low-pressure cavity, 27, the second hydraulic intensifier right side hyperbaric chamber, 28, the second hydraulic intensifier left side hyperbaric chamber, 29, the second hydraulic intensifier left side low-pressure cavity.
The invention discloses a kind of hydraulic booster energy-recuperation system and control gear, it comprises accumulator 1, the first solenoid valve 2, the first hydraulic intensifier 3, the first one-way valve 4, the second one-way valve 5, the 3rd one-way valve 6, the 4th one-way valve 7, flow transducer 8, the second solenoid valve 9, the second hydraulic intensifier 10, the 5th solenoid valve 11, the 6th solenoid valve 12, the 7th solenoid valve 13, the 8th solenoid valve 14, electronic control unit 15, fuel tank 16, the first hydraulic intensifier right side low-pressure cavity 17, the first hydraulic intensifier right side hyperbaric chamber 18, the first hydraulic intensifier left side hyperbaric chamber 19, the first hydraulic intensifier left side low-pressure cavity 20, left hand piston head 21, piston rod 22, divide chamber layer 23, right hand piston head 24, spring 25, the second hydraulic intensifier right side low-pressure cavity 26, the second hydraulic intensifier right side hyperbaric chamber 27, the second hydraulic intensifier left side hyperbaric chamber 28, the second hydraulic intensifier left side low-pressure cavity 29.
The working procedure that hydraulic system is concrete describes as an example of first group of hydraulic booster energy-recuperation system example: when low pressure fluid is inputted by low pressure fuel pipe, if electronic control unit 15 can receive flow transducer 8 and transmit flux signal, electronic control unit 15 is controlled the first solenoid valve 2 at left lateral position, control the second solenoid valve 9 at right lateral position (now the working condition of second group of hydraulic booster energy-recuperation system when the first solenoid valve is at right lateral position, the working method of first group of hydraulic booster energy-recuperation system) below simultaneously.Part low pressure fluid, through the left lateral position of the first solenoid valve 2, flows into the first hydraulic intensifier left side low-pressure cavity 20.Because the area of left hand piston head 21 is 3/4 times of piston rod 22 sectional areas that cylindrical encloses, i.e. S
piston head=3/4S
piston rod, according to equilibrium of forces relation, S
piston head* P
left side low-pressure cavity=(S
piston head-S
piston rod)* P
left side hyperbaric chamber=1/4 S
piston head* P
left side hyperbaric chamber(P
left side low-pressure cavity---the first hydraulic intensifier left side low-pressure cavity 20 oil liquid pressures, P
left side hyperbaric chamber---the first hydraulic intensifier left side hyperbaric chamber 19 oil liquid pressures).So the pressure of the first hydraulic intensifier left side hyperbaric chamber 19 fluid is 4 times of the first hydraulic intensifier left side low-pressure cavity 20 low pressure oil hydraulic couplings, has realized the supercharging of low pressure fluid.Now, the pressure of the first one-way valve 4 opening fluid equals the pressure of the first hydraulic intensifier left side hyperbaric chamber 19 high-voltage oil liquids, and the pressure of inlet's fluid equals the pressure of low pressure fluid, the pressure of the first one-way valve 4 openings is greater than the pressure of inlet, in closed condition.The fluid of the first hydraulic intensifier left side hyperbaric chamber 19 after supercharging flows into accumulator 1 through flow transducer 8 and the 3rd one-way valve 6, realizes accumulation of energy; Part low pressure fluid flows into the first hydraulic intensifier right side hyperbaric chamber 18 through the second one-way valve 5, because the sectional area of right hand piston head is 3/4 times of piston rod 22 sectional areas that cylindrical encloses, i.e. and S
piston head=3/4S
piston rod, according to equilibrium of forces relation, S
piston head* P
right side low-pressure cavity=(S
piston head-S
piston rod)* P
right side hyperbaric chamber(P
right side low-pressure cavity---the first hydraulic intensifier right side low-pressure cavity 17 oil liquid pressures, P
right side hyperbaric chamber---the first hydraulic intensifier right side hyperbaric chamber 18 oil liquid pressures), P
right side hyperbaric chamber=4 P
right side low-pressure cavity.Under the effect of the first hydraulic intensifier right side hyperbaric chamber 18 and the first hydraulic intensifier left side low-pressure cavity 20 fluid, the piston motion of turning right, the first hydraulic intensifier right side low-pressure cavity 17 fluid flow back to fuel tank 16 through the first solenoid valve 2.Because the pressure of the fluid of the 4th one-way valve 7 right-hand members is the pressure after supercharging, be greater than the pressure of the 4th one-way valve 7 left end fluid, so the 4th one-way valve 7 is in closed condition.
When low pressure fluid is inputted by low pressure fuel pipe, if electronic control unit 15 does not receive flow transducer 8 and transmits flux signal, electronic control unit 15 is controlled the first solenoid valve 2 at right lateral position, control the second solenoid valve 9 at left lateral position (now the working condition of second group of hydraulic booster energy-recuperation system referring to above the first solenoid valve during at left lateral position, the working method of first group of hydraulic booster energy-recuperation system) simultaneously.Part low pressure fluid, through the right lateral position of the first solenoid valve 2, flows into the first hydraulic intensifier right side low-pressure cavity 17.Because the area of right hand piston head 24 is 3/4 times of piston rod 22 sectional areas that cylindrical encloses, i.e. S
piston head=3/4S
piston rod, according to equilibrium of forces relation, S
piston head* P
right side low-pressure cavity=(S
piston head-S
piston rod)* P
right side hyperbaric chamber=1/4 S
piston head* P
right side hyperbaric chamber(P
right side low-pressure cavity---the first hydraulic intensifier right side low-pressure cavity 17 oil liquid pressures, P
right side hyperbaric chamber---the first hydraulic intensifier right side hyperbaric chamber 18 oil liquid pressures).So the pressure of the first hydraulic intensifier right side hyperbaric chamber 18 fluid is 4 times of low pressure oil hydraulic coupling, has realized the supercharging of low pressure fluid.Now, the pressure of the second one-way valve 5 opening fluid equals the pressure of the first hydraulic intensifier right side hyperbaric chamber 18 high-voltage oil liquids, and the pressure of inlet's fluid equals the pressure of low pressure fluid, the pressure of the second one-way valve 5 openings is greater than the pressure of inlet, in closed condition.The fluid of the second hydraulic intensifier right side hyperbaric chamber 18 after supercharging flows into accumulator 1 through the 4th one-way valve 7, realizes accumulation of energy; Part low pressure fluid flows into the first hydraulic intensifier left side hyperbaric chamber 19 through the first one-way valve 4, because the sectional area of left hand piston head is four times of piston rod 22 sectional areas that cylindrical encloses, i.e. and S
piston head=3/4S
piston rod, according to equilibrium of forces relation, S
piston head* P
left side low-pressure cavity=(S
piston head-S
piston rod)* P
left side hyperbaric chamber(P
left side low-pressure cavity---the first hydraulic intensifier left side low-pressure cavity 20 oil liquid pressures, P
left side hyperbaric chamber---the first hydraulic intensifier left side hyperbaric chamber 19 oil liquid pressures), P
left side hyperbaric chamber=4 P
left side low-pressure cavity.Under the effect of the first hydraulic intensifier right side low-pressure cavity 17 and the first hydraulic intensifier left side hyperbaric chamber 19 fluid, the piston motion of turning right, on the left of the first hydraulic intensifier, low-pressure cavity 20 fluid flow back to fuel tank 16 through the first solenoid valve 2.Because the pressure of the fluid of the 3rd one-way valve 6 right-hand members is the pressure after supercharging, be greater than the pressure of the 3rd one-way valve 6 left end fluid, so the 3rd one-way valve 6 is in closed condition.
Although in conjunction with the embodiments above-mentioned and accompanying drawing is described the specific embodiment of the present invention; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technological scheme of the present invention, those skilled in the art do not need to pay various amendments that creative work can make or distortion still within protection scope of the present invention.
Claims (6)
1. a hydraulic booster energy-recuperation system, it is characterized in that: hydraulic booster energy system is established two groups altogether, first group of hydraulic booster energy-recuperation system is made up of the first solenoid valve, the first hydraulic intensifier, the first one-way valve, the second one-way valve, the 3rd one-way valve, the 4th one-way valve, and second group of hydraulic booster energy-recuperation system is made up of the second solenoid valve, the second hydraulic intensifier, the 5th one-way valve, the 6th one-way valve, the 7th one-way valve, the 8th one-way valve; The control gear of hydraulic booster energy-recuperation system comprises electronic control unit and flow transducer; Remaining hydraulic pressure installation comprises accumulator, fuel tank.
2. a kind of hydraulic booster energy-recuperation system as claimed in claim 1, it is characterized in that described the first solenoid valve is identical with the structure of described the second solenoid valve, be two position four-way solenoid valves, and the Placement in oil circuit is identical, the first solenoid valve filler opening connects low pressure fuel pipe, oil outlet is connected with fuel tank, be connected respectively the first hydraulic intensifier left side low-pressure cavity and the first hydraulic intensifier right side low-pressure cavity with two interfaces of executive component, the first solenoid valve is in the time of left lateral position, the fluid of low pressure fuel pipe flows into the first hydraulic intensifier left side low-pressure cavity, the first hydraulic intensifier right side low-pressure cavity fluid flows back to fuel tank, the first solenoid valve is in the time of right lateral position, the fluid of low pressure fuel pipe flows into the first hydraulic intensifier right side low-pressure cavity, the first hydraulic intensifier left side low-pressure cavity fluid flows back to fuel tank, the second solenoid valve filler opening connects low pressure fuel pipe, oil outlet is connected with fuel tank, be connected respectively the second hydraulic intensifier left side low-pressure cavity and the second hydraulic intensifier right side low-pressure cavity with two interfaces of executive component, the second solenoid valve is in the time of left lateral position, the fluid of low pressure fuel pipe flows into the second hydraulic intensifier left side low-pressure cavity, the second hydraulic intensifier right side low-pressure cavity fluid flows back to fuel tank, the second solenoid valve is in the time of right lateral position, the fluid of low pressure fuel pipe flows into the second hydraulic intensifier right side low-pressure cavity, and the second hydraulic intensifier left side low-pressure cavity fluid flows back to fuel tank.
3. a kind of hydraulic booster energy-recuperation system as claimed in claim 1, it is characterized in that described the first hydraulic intensifier is identical with described the second hydraulic intensifier structure, the first hydraulic intensifier profile is cylindric, by a point chamber layer, the first hydraulic intensifier right side low-pressure cavity, the first hydraulic intensifier right side hyperbaric chamber, the first hydraulic intensifier left side hyperbaric chamber, the first hydraulic intensifier left side low-pressure cavity, piston composition, piston further comprises left hand piston head, piston rod, right hand piston head, point chamber layer is positioned at the neutral position of the first hydraulic intensifier inner chamber, for circular ring, integral with the first hydraulic intensifier, the dead in line of axis and the first hydraulic intensifier, piston rod passes from circular hole, the circumference of circular hole is wrapping one deck rubber layer, seal, prevent that fluid from flowing between the first hydraulic intensifier left side hyperbaric chamber and the first hydraulic intensifier right side hyperbaric chamber, point-blank, and piston rod is hollow for left hand piston head, the axis of right hand piston head and the axis of piston rod of piston, the radius of the cross section of left hand piston head and right hand piston head is piston rod cross section exradius
/ 2 times, the cross-section area of piston head is 3/4 times of piston rod sectional area that cylindrical encloses, the structure of left hand piston head is identical with the structure of right hand piston head, on the end face at left hand piston head away from piston rod, has six springs to be distributed on the circumference that radius is 3/4 left hand piston head radius, the inner left wall of left hand piston head and the first hydraulic intensifier forms the first hydraulic intensifier left side low-pressure cavity, left hand piston head forms the first hydraulic intensifier left side hyperbaric chamber with a point chamber layer, right hand piston head forms the first hydraulic intensifier right side hyperbaric chamber with a point chamber layer, the right side inwall of right hand piston head and the first hydraulic intensifier forms the first hydraulic intensifier right side low-pressure cavity, the volume sum of the first hydraulic intensifier left side low-pressure cavity and the first hydraulic intensifier left side hyperbaric chamber equals the volume sum of the first hydraulic intensifier right side low-pressure cavity and the first hydraulic intensifier right side hyperbaric chamber.
4. a kind of hydraulic booster energy-recuperation system as claimed in claim 1, it is characterized in that: the entrance of described the first one-way valve is connected with low pressure fuel pipe, the outlet of the first one-way valve is connected with flow transducer with the gateway of the first hydraulic intensifier left side hyperbaric chamber, this one-way valve circulating direction is that low pressure fluid flows into the first hydraulic intensifier left side hyperbaric chamber, input the first pressurized machine left side hyperbaric chamber for low pressure fluid, and prevent that high pressure oil from flowing out fluid while entering accumulator and flowing backwards from the first hydraulic intensifier left side hyperbaric chamber; The entrance of described the second one-way valve is connected with low pressure fuel pipe, the gateway of the outlet of the second one-way valve and the first hydraulic intensifier right side hyperbaric chamber is connected with the entrance of the 4th one-way valve, this one-way valve is inputted the first pressurized machine right side hyperbaric chamber for low pressure fluid, and prevents that high pressure oil from flowing out fluid while entering accumulator and flowing backwards from the first hydraulic intensifier right side hyperbaric chamber; The entrance of described the 3rd one-way valve is connected with flow transducer, the outlet of the 3rd one-way valve is connected with the outlet of the 4th one-way valve with accumulator, this one-way valve is inputted accumulator from the first hydraulic intensifier left side hyperbaric chamber through flow transducer for high-voltage oil liquid, and prevents that high-voltage oil liquid from flowing backwards; The entrance of described the 4th one-way valve is connected with the outlet of the second one-way valve with the gateway of the first hydraulic intensifier right side hyperbaric chamber, the outlet of the 4th one-way valve is connected with the outlet of the 3rd one-way valve with accumulator, this one-way valve is inputted accumulator for high-voltage oil liquid from the first hydraulic intensifier right side hyperbaric chamber, and prevents that high-voltage oil liquid from flowing backwards; The entrance of described the 5th one-way valve is connected with low pressure fuel pipe, the outlet of the 5th one-way valve is connected with the entrance of the 7th one-way valve with the gateway of the second hydraulic intensifier left side hyperbaric chamber, this one-way valve circulating direction is that low pressure fluid flows into the second hydraulic intensifier left side hyperbaric chamber, input the second pressurized machine left side hyperbaric chamber for low pressure fluid, and prevent that high pressure oil from flowing out fluid while entering accumulator and flowing backwards from the second hydraulic intensifier left side hyperbaric chamber; The entrance of described the 6th one-way valve is connected with low pressure fuel pipe, the gateway of the outlet of the 6th one-way valve and the second hydraulic intensifier right side hyperbaric chamber is connected with the entrance of the 8th one-way valve, this one-way valve is inputted the second pressurized machine right side hyperbaric chamber for low pressure fluid, and preventing that high pressure oil from flowing out and entering accumulator from the second hydraulic intensifier right side hyperbaric chamber, fluid flows backwards; The entrance of described the 7th one-way valve is connected with the outlet of the 5th one-way valve with the second hydraulic intensifier left side hyperbaric chamber, the outlet of the 7th one-way valve is connected with the outlet of the 8th one-way valve with accumulator, this one-way valve is inputted accumulator for high-voltage oil liquid from the second hydraulic intensifier left side hyperbaric chamber, and prevents that high-voltage oil liquid from flowing backwards; The entrance of described the 8th one-way valve is connected with the outlet of the 6th one-way valve with the gateway of the second hydraulic intensifier right side hyperbaric chamber, the outlet of the 8th one-way valve is connected with the outlet of the 7th one-way valve with accumulator, this one-way valve is inputted accumulator for high-voltage oil liquid from the second hydraulic intensifier right side hyperbaric chamber, and prevents that high-voltage oil liquid from flowing backwards.
5. a kind of hydraulic booster energy-recuperation system as claimed in claim 1, it is characterized in that described accumulator is connected with the outlet of the 8th one-way valve with the outlet of the 3rd one-way valve, the outlet of the 4th one-way valve, the outlet of the 7th one-way valve, be used for collecting the high-voltage oil liquid of the first hydraulic intensifier and the generation of the second hydraulic intensifier, stored energy, realizes energy and reclaims.
6. a kind of hydraulic booster energy-recuperation system as claimed in claim 1, it is characterized in that the working position of described electronic control unit control the first solenoid valve and the second solenoid valve, when electronic control unit receives flux signal that sensor transmits when non-vanishing, electronic control unit control the first solenoid valve, at left lateral position, is controlled the second solenoid valve at right lateral position; In the time that electronic control unit receives flux signal that sensor transmits and is zero, electronic control unit control the first solenoid valve is at right lateral position, control the second solenoid valve at left lateral position, the piston that can ensure like this first hydraulic intensifier and the second hydraulic intensifier moves toward opposite direction, prevent piston same time, equidirectional motion causes excessive inertia, avoids producing fluid power simultaneously and impacts; On the branch road that flow transducer is connected with accumulator at the first hydraulic intensifier left side hyperbaric chamber, connect with the 3rd one-way valve, between the first hydraulic intensifier left side hyperbaric chamber and the 3rd one-way valve, detection the first hydraulic intensifier left side hyperbaric chamber flows to the flow of accumulator fluid.
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| CN201410332680.7A CN104074812B (en) | 2014-07-14 | 2014-07-14 | A kind of hydraulic booster energy-recuperation system and control device |
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| CN201410332680.7A CN104074812B (en) | 2014-07-14 | 2014-07-14 | A kind of hydraulic booster energy-recuperation system and control device |
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| CN104533865A (en) * | 2015-01-08 | 2015-04-22 | 中国人民解放军国防科学技术大学 | Hydraulic energy-saving controller |
| CN105626628A (en) * | 2016-03-01 | 2016-06-01 | 西安交通大学 | Hydraulic energy conversion mechanism for human body walking energy recovery |
| CN109185239A (en) * | 2018-09-10 | 2019-01-11 | 深圳市中粤海洋能源科技有限公司 | A kind of tidal power generation pressure charging system |
| CN110337545A (en) * | 2017-09-11 | 2019-10-15 | 日立建机株式会社 | The hydraulic oil energy recycle device of Work machine |
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| CN103477088A (en) * | 2011-04-21 | 2013-12-25 | 瓦锡兰芬兰有限公司 | Hydraulic system and operating method |
| CN103741755A (en) * | 2013-10-17 | 2014-04-23 | 南京工业大学 | Excavator energy recovery system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104533865A (en) * | 2015-01-08 | 2015-04-22 | 中国人民解放军国防科学技术大学 | Hydraulic energy-saving controller |
| CN104533865B (en) * | 2015-01-08 | 2017-04-05 | 中国人民解放军国防科学技术大学 | A kind of hydraulic energy-saving controller |
| CN105626628A (en) * | 2016-03-01 | 2016-06-01 | 西安交通大学 | Hydraulic energy conversion mechanism for human body walking energy recovery |
| CN105626628B (en) * | 2016-03-01 | 2017-10-20 | 西安交通大学 | A kind of hydraulic energy transformation mechanism for human body walking energy regenerating |
| CN110337545A (en) * | 2017-09-11 | 2019-10-15 | 日立建机株式会社 | The hydraulic oil energy recycle device of Work machine |
| CN110337545B (en) * | 2017-09-11 | 2020-11-03 | 日立建机株式会社 | Hydraulic oil energy recovery device for working machine |
| CN109185239A (en) * | 2018-09-10 | 2019-01-11 | 深圳市中粤海洋能源科技有限公司 | A kind of tidal power generation pressure charging system |
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| CN104074812B (en) | 2016-08-03 |
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