CN111503076B - Oil return power generation system - Google Patents
Oil return power generation system Download PDFInfo
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- CN111503076B CN111503076B CN202010268913.7A CN202010268913A CN111503076B CN 111503076 B CN111503076 B CN 111503076B CN 202010268913 A CN202010268913 A CN 202010268913A CN 111503076 B CN111503076 B CN 111503076B
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/14—Energy-recuperation means
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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
- F15B2211/30—Directional control
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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
- F15B2211/80—Other types of control related to particular problems or conditions
- F15B2211/88—Control measures for saving energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides an oil return power generation system, and relates to the technical field of hydraulic systems. The oil return power generation system comprises a power generation set, an oil return valve set and a working valve set; the working valve group is communicated with the actuating mechanism, the oil return valve group is arranged in a passage communicated with the actuating mechanism, the oil return valve group is communicated with the power generation group, and the working valve group is used for adjusting the fluid flow direction of the oil return valve group; the return oil generated by the actuating mechanism can flow into the power generation set through the oil return valve group, the power generation set can generate power by using the return oil, and the power generation set can generate back pressure of an oil return oil way of the actuating mechanism. The oil return power generation system provided by the invention solves the technical problems of pressure loss and energy utilization rate reduction when back pressure is generated in the prior art.
Description
Technical Field
The invention relates to the technical field of hydraulic systems, in particular to an oil return power generation system.
Background
In the hydraulic system of the excavator, return oil is inevitably generated in the working process of the actuating mechanism, and in order to ensure the operation stability of the actuating mechanism of the excavator, back pressure is inevitably arranged on a hydraulic return oil circuit, so that the energy consumption of the hydraulic system is inevitably increased. In general, hydraulic systems generate a back pressure in the following manner: the multi-way valve generates back pressure when oil return is throttled, or a check valve is arranged on an oil return path to cause back pressure. Although both of the above-mentioned methods achieve the generation of back pressure and improve the stability and comfort of the actuator, a part of pressure loss is generated when the back pressure is generated, and the pressure loss causes energy consumption, thereby reducing the utilization rate of the oil.
In view of the above, there is a need for an oil-return power generation system that can solve the above problems.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is already known to a person skilled in the art.
Disclosure of Invention
The first objective of the present invention is to provide an oil-returning power generation system to alleviate the technical problems of pressure loss and energy utilization rate reduction when back pressure is generated in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an oil return power generation system which comprises a power generation set, an oil return valve set and a working valve set;
the working valve group is communicated with the actuating mechanism, the oil return valve group is arranged in a passage for communicating the working valve group with the actuating mechanism, the oil return valve group is communicated with the power generation group, and the working valve group is used for adjusting the flow direction of fluid of the oil return valve group;
the oil return that actuating mechanism produced can pass through the oil return valves flows in the electricity generation group, the electricity generation group can utilize the oil return electricity generation, just the electricity generation group can produce actuating mechanism's oil return oil circuit's backpressure.
In any of the above technical solutions, further, the oil return valve group includes a first oil return path and a second oil return path, and the actuating mechanism includes a first oil port and a second oil port;
one end of the first oil return way is communicated with the first oil port, and the other end of the first oil return way is communicated with the power generation set; one end of the second oil return path is communicated with the second oil port, and the other end of the second oil return path is communicated with the power generation set.
In any of the above technical solutions, further, the oil return valve group further includes a shuttle valve, the shuttle valve includes a third oil port, a fourth oil port and a fifth oil port, the third oil port and the fourth oil port are respectively communicated with the fifth oil port, the fifth oil port is used for connecting the power generation group, the third oil port is used for connecting the first oil return path, and the fourth oil port is used for connecting the second oil return path.
In any one of the above technical solutions, further, the oil return valve group further includes two first check valves disposed in pairs, one of the first check valves disposed in pairs is disposed in the first oil return path, and the other first check valve is disposed in the second oil return path.
In any of the above technical solutions, further, the oil return valve group further includes two second check valves arranged in pairs;
one of the paired second check valves is arranged in the first oil return path and is positioned between the shuttle valve and the first check valve on the first oil return path; and the other second one-way valve is arranged on the second oil return path and is positioned between the first one-way valve on the second oil return path and the shuttle valve.
In any of the above technical solutions, further, the power generation set includes a first oil tank, a driving member, and a generator;
the first oil tank with oil return valves intercommunication, the driving piece set up in first oil tank with between the oil return valves, just the driving piece with the generator is connected, the oil return valves flows extremely the fluid of driving piece can be used for the generator electricity generation.
In any one of the above technical solutions, further, the power generation unit further includes a first overflow valve and a second oil tank, the first overflow valve is communicated with the oil return valve group, and the first overflow valve is used for adjusting the pressure of the oil return valve group.
In any one of the above technical solutions, further, the power generation unit further includes a filter, and the filter is disposed between the first oil tank and the driving member.
In any of the above technical solutions, further, the work valve group includes a reversing valve;
the reversing valve comprises two working oil ports, and the two working oil ports are communicated with the first oil return path and the second oil return path;
the reversing valve further comprises a first control port and a second control port, the first control port is used for adjusting the communication of the first oil return passage, and the second control port is used for adjusting the communication of the second oil return passage.
In any of the above technical solutions, further, the work valve group further includes a second overflow valve, and the second overflow valve is communicated with the first oil return passage;
and/or the working valve group comprises a third overflow valve, and the third overflow valve is communicated with the second oil return path.
The invention has the beneficial effects that:
the invention provides an oil-return power generation system which comprises a power generation set, an oil-return valve set and a working valve set, wherein the working valve set is communicated with an execution mechanism, and the working valve set can adjust the flow direction of oil flowing through the execution mechanism. The oil return valve group is communicated with the power generation group, the oil return valve group is arranged between the working valve group and the actuating mechanism, and therefore the flow direction of oil between the oil return valve group and the actuating mechanism is adjusted through the working valve group. During the in-service use, actuating mechanism during operation can produce the oil return, and these oil returns can flow to the oil return valves to through oil return valves flow to the power generation unit, need not through the work valves on the way that the backward flow flows through, and then eliminate the pressure loss that the oil return produced at the work valves. And the oil flowing to the power generation set can be used for the power generation set to perform power generation operation, so that the return oil of the actuating mechanism is utilized, and the energy recovery is realized. Meanwhile, the power generation set can generate back pressure of an oil return way for the actuating mechanism, and the operation stability of the actuating mechanism is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic diagram of an oil-return power generation system provided in an embodiment of the present invention.
Icon: 10-a power generation set; 11-a first tank; 12-a drive member; 13-a generator; 14-a first overflow valve; 15-a second tank; 16-a filter; 20-an oil return valve group; 21-a first oil return path; 22-a second oil return; 23-a shuttle valve; 24-a first one-way valve; 25-a second one-way valve; 30-a working valve group; 31-a reversing valve; 32-a second overflow valve; 33-a third relief valve; 40-an actuator; 41-a first oil port; 42-a second oil port; 231-a third oil port; 232-fourth oil port; 233-fifth oil port; 311-a first working oil port; 312-a second working oil port; 313 — a first control port; 314-second control port.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1, the oil-return power generation system provided in this embodiment includes a power generation set 10, an oil-return valve set 20, and a work valve set 30; the working valve group 30 is communicated with the actuating mechanism 40, the oil return valve group 20 is arranged in a passage where the working valve group 30 is communicated with the actuating mechanism 40, the oil return valve group 20 is communicated with the power generation group 10, and the working valve group 30 is used for adjusting the fluid flow direction of the oil return valve group 20; the return oil generated by the actuator 40 can flow into the power generation set 10 through the return valve group 20, the power generation set 10 can generate power by using the return oil, and the power generation set 10 can generate back pressure of the return oil path of the actuator 40.
Specifically, the actuator 40 is a structure for performing an operation in a hydraulic system of the excavator, and an operation command of the actuator 40 is realized by power generated by the hydraulic system. The actuator 40 is in communication with the valve block 30, and oil can flow through the valve block 30 to the actuator 40 for powering the actuator 40. The valve block 30 is capable of controlling the flow of oil through the actuator 40 to adjust the operating commands of the actuator 40. However, during operation of the actuator 40, return oil is generated, and the return oil can flow to the valve block 30, thereby causing pressure loss of the valve block 30. In the present embodiment, the oil return valve group 20 is disposed on a passage through which the work valve group 30 communicates with the actuator 40, so that the oil return generated by the actuator 40 can flow out through the oil return valve group 20, that is, the oil return generated by the actuator 40 does not need to pass through the work valve group 30, so as to reduce the pressure loss generated to the work valve group 30. In actual use, the oil return valve group 20 is also communicated with the power generation group 10, and the power generation group 10 can generate back pressure on an oil return line of the actuating mechanism 40 under the action of load so as to ensure that the actuating mechanism 40 can operate stably, further eliminate pressure loss generated by oil return on the working valve group 30 and reduce consumption of the oil return on the actuating mechanism 40. Meanwhile, the return oil flowing to the power generation set 10 through the oil return valve group 20 can also be used for power generation operation of the power generation set 10, so that the return oil of the actuating mechanism 40 is utilized, energy recovery is realized, and the energy utilization rate is improved. When the oil return valve group 20 works, just because the working valve group 30 can be used for adjusting the flow direction of the oil flowing through the actuating mechanism 40, the working valve group 30 can also adjust the flow direction of the oil flowing through the oil return valve group 20, so that the oil return generated by the actuating mechanism 40 can smoothly flow to the power generation group 10 through the oil return valve group 20, and the power generation group 10 is recycled.
With continued reference to fig. 1, preferably, the oil return valve set 20 includes a first oil return path 21 and a second oil return path 22, and the actuator 40 includes a first oil port 41 and a second oil port 42; one end of the first oil return path 21 is communicated with the first oil port 41, and the other end of the first oil return path 21 is communicated with the power generation unit 10; one end of the second oil return path 22 is communicated with the second oil port 42, and the other end of the second oil return path 22 is communicated with the generator set 10.
In this embodiment, the actuating mechanism 40 has two oil ports, which are a first oil port 41 and a second oil port 42, respectively, the oil return valve set 20 has a first oil return path 21 and a second oil return path 22, the first oil return path 21 is communicated with the first oil port 41 of the actuating mechanism 40, the second oil return path 22 is communicated with the second oil port 42 of the actuating mechanism 40, and the work valve set 30 can adjust the communication condition of the first oil return path 21 and the second oil return path 22, so as to adjust the flow direction of the oil. When the first oil return path 21 is communicated, the return oil of the actuator 40 flows to the first oil return path 21 through the first oil port 41, and flows to the power generation set 10 along the first oil return path 21, so that the power generation set 10 recycles the return oil, and at this time, the second oil return path 22 is not communicated. When the second oil return path 22 is communicated, the return oil of the actuator 40 flows to the second oil return path 22 through the second oil port 42, and flows to the generator set 10 along the second oil return path 22, so that the generator set 10 can recycle the return oil. The working valve group 30 adopts a pilot valve group, the communication condition of the first oil return path 21 and the second oil return path 22 can be adjusted through pilot pressure, and when the return oil generated by the execution mechanism 40 flows along the first oil return path 21 and the second oil return path 22 respectively, the return oil cannot pass through the working valve group 30, so that the pressure loss generated by the working valve group 30 is reduced.
With continued reference to fig. 1, preferably, the service valve assembly 30 includes a reversing valve 31; the reversing valve 31 comprises two working oil ports, and the two working oil ports are both communicated with the first oil return path 21 and the second oil return path 22; the direction valve 31 further includes a first control port 313 for regulating communication of the first oil return passage 21 and a second control port 314 for regulating communication of the second oil return passage 22.
Specifically, the directional control valve 31 is a pilot three-position four-way electromagnetic directional control valve 31, and includes two control ports for pilot pressure control, namely a first control port 313 and a second control port 314, the first control port 313 is used for pilot pressure control to adjust communication of the first oil return passage 21, and the second control port 314 is used for pilot pressure control to adjust communication of the second oil return passage 22. Meanwhile, the reversing valve 31 further includes two working oil ports, an oil inlet and an oil return port, the two working oil ports are a first working oil port 311 and a second working oil port 312, the first working oil port 311 and the second working oil port 312 can be respectively communicated with an oil inlet, and when the first working oil port 311 is communicated with the oil inlet, the second working oil port 312 is communicated with the oil return port for adjusting the flow direction of the oil. The first working oil port 311 and the second working oil port 312 are both communicated with the first oil return path 21 and the second oil return path 22, and an oil path is provided between the first working oil port 311 and the second working oil port 312. When the first control port 313 pilot-controls the pressure to communicate the first oil return passage 21, the oil flowing out through the first oil port 41 of the actuator 40 can flow to the first oil return passage 21, flow through the oil passage between the first working oil port 311 and the second working oil port 312, and continue to flow along the first oil return passage 21 to the power generation group 10. When the pilot pressure of the second control port 314 makes the second oil return path 22 communicate, the oil flowing out of the second oil port 42 of the actuator 40 can flow to the second oil return path 22, and flow through the oil path between the first working oil port 311 and the second working oil port 312, and continue to flow to the generator set 10 along the second oil return path 22. In the whole flowing process, the return oil does not need to flow to a valve plate of the working valve group 30, and the pressure loss of the working valve group 30 is reduced.
With continued reference to fig. 1, preferably, the work valve group 30 further includes a second overflow valve 32, and the second overflow valve 32 is communicated with the first oil return path 21; the valve block 30 includes a third relief valve 33, and the third relief valve 33 communicates with the second oil return passage 22. The provision of the second relief valve 32 and the third relief valve 33 is for ensuring a constant pressure on the first oil return passage 21 and the second oil return passage 22.
It should be noted that, not limited to the above-described arrangement, the second relief valve 32 may be provided only in the first oil return passage 21, or the third relief valve 33 may be provided only in the second oil return passage 22, so long as the pressure of the first oil return passage 21 and the pressure of the second oil return passage 22 are ensured to be constant, thereby protecting the first oil return passage 21 and the second oil return passage 22.
Referring to fig. 1, in the present embodiment, the oil return valve set 20 further includes a shuttle valve 23, the shuttle valve 23 includes a third oil port 231, a fourth oil port 232 and a fifth oil port 233, the third oil port 231 and the fourth oil port 232 are respectively communicated with the fifth oil port 233, the fifth oil port 233 is used for connecting the power generation set 10, the third oil port 231 is used for connecting the first oil return path 21, and the fourth oil port 232 is used for connecting the second oil return path 22.
Specifically, when the third oil port 231 is communicated with the fifth oil port 233, the fourth oil port 232 is not communicated with the fifth oil port 233; when the fourth port 232 communicates with the fifth port 233, the third port 231 does not communicate with the fifth port 233. The third port 231 is communicated with the first oil return passage 21, the fourth port 232 is communicated with the second oil return passage 22, and the fifth port 233 is communicated with the generator set 10. In actual use, the oil flowing through the first oil return path 21 flows to the fifth oil port 233 through the third oil port 231, and flows to the generator set 10 through the fifth oil port 233; the oil flowing through the second oil return passage 22 flows to the fifth oil port 233 through the fourth oil port 232 and flows to the generator set 10 through the fifth oil port 233.
With continued reference to fig. 1, preferably, the oil return valve group 20 further includes two first check valves 24 disposed in pairs, one of the first check valves 24 in a pair is disposed in the first oil return path 21, and the other first check valve 24 in a pair is disposed in the second oil return path 22. Specifically, the first check valve 24 disposed in the first oil return path 21 is communicated with the third oil port 231 of the shuttle valve 23, and the first check valve 24 disposed in the second oil return path 22 is communicated with the fourth oil port 232 of the shuttle valve 23, so as to ensure that the oil flowing to the shuttle valve 23 does not flow back along the first oil return path 21 and the second oil return path 22 under the action of the two first check valves 24.
With continued reference to fig. 1, preferably, the oil return valve group 20 further includes two second check valves 25 arranged in pairs; one of the pair of second check valves 25 is provided in the first oil return passage 21 between the shuttle valve 23 and the first check valve 24 on the first oil return passage 21; another second check valve 25 is disposed in the second return line 22 and between the first check valve 24 and the shuttle valve 23 on the second return line 22.
Specifically, the two second check valves 25 are both pilot-controlled check valves, that is, the second check valve 25 has a control port, and the control port can be controlled by pilot pressure through the two control ports of the directional control valve 31. In practical use, when the first oil port 41 of the actuator 40 generates oil return, the first control port 313 of the reversing valve 31 can generate pilot pressure to control the control oil port of the second check valve 25 located on the first oil return path 21, so as to conduct the first oil return path 21, so as to enable the oil return to flow along the first oil return path 21, flow through the second overflow valve 32, flow to one of the first check valves 24, flow along the first check valve 24, flow to the second check valve 25 on the first oil return path 21, flow through the second check valve 25, flow to the third oil port 231 of the shuttle valve 23, and flow from the fifth oil port 233 of the shuttle valve 23 to the power generation set 10. When the second oil port 42 of the actuator 40 returns oil, the second control port 314 of the reversing valve 31 can generate pilot pressure to control the control oil port of the second check valve 25 located on the second oil return path 22, so as to conduct the second oil return path 22, so as to cause the return oil to flow along the second oil return path 22, flow through the third overflow valve 33, flow to the other first check valve 24, flow to the second check valve 25 on the second oil return path 22 along the first check valve 24, flow to the fourth oil port 232 of the shuttle valve 23 through the second check valve 25, and flow to the power generation group 10 from the fifth oil port 233 of the shuttle valve 23.
With continued reference to fig. 1, it is preferred that the generator set 10 includes a first oil tank 11, a driver 12, and a generator 13; first oil tank 11 and return valves 20 intercommunication, driving piece 12 set up between first oil tank 11 and return valves 20, and driving piece 12 is connected with generator 13, and return valves 20 flows the fluid of driving piece 12 and can be used for generator 13 electricity generation.
In the present embodiment, the driving member 12 is a motor. The return oil flowing out of the fifth oil port 233 of the shuttle valve 23 can flow to the driving member 12 to drive the driving member 12 to operate, and then the driving member 12 drives the generator 13 to generate electricity, so that the return oil is utilized. The excess return oil flowing to the drive element 12 can be stored in the first oil tank 11 for other purposes, and the return oil can be recycled. At the same time, the operating performance of the actuator 40 can be improved by fine-tuning the pressure alone of the driver 12.
Wherein, the driving member 12 adopts a one-way variable motor.
With continued reference to fig. 1, the generator set 10 preferably further includes a filter 16, the filter 16 being disposed between the first oil tank 11 and the driving member 12. Specifically, the filter 16 can be used for filtering oil, filters impurities mixed in the oil, and improves the cleanliness of the oil.
With reference to fig. 1, preferably, the power generation assembly 10 further includes a first overflow valve 14 and a second oil tank 15, the first overflow valve 14 is communicated with the oil return valve group 20, and the first overflow valve 14 is used for adjusting the pressure of the oil return valve group 20.
Specifically, the first overflow valve 14 is a proportional overflow valve, and the overflow set pressure of the first overflow valve 14 can be adjusted by a program, so that the oil return pressure at the fifth oil port 233 of the shuttle valve 23 can be finely adjusted, that is, the operation stability of the actuator 40 is improved by adjusting the back pressure generated by the generator set 10.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (7)
1. An oil return power generation system is characterized by comprising a power generation set (10), an oil return valve set (20) and a working valve set (30);
the working valve group (30) is communicated with an actuating mechanism (40), the oil return valve group (20) is arranged in a passage through which the working valve group (30) is communicated with the actuating mechanism (40), the oil return valve group (20) is communicated with the power generation group (10), and the working valve group (30) is used for adjusting the fluid flow direction of the oil return valve group (20);
the return oil generated by the actuating mechanism (40) can flow into the power generation set (10) through the return valve group (20), the power generation set (10) can generate power by using the return oil, and the power generation set (10) can generate the back pressure of a return oil path of the actuating mechanism (40);
the oil return valve group comprises a shuttle valve (23) and two first one-way valves (24) which are arranged in pair, and the actuating mechanism (40) comprises a first oil port (41) and a second oil port (42); one first check valve (24) is arranged between the work valve group (30) and a third oil inlet (231) of the shuttle valve, and the other first check valve (24) is arranged between the work valve group (30) and a fourth oil inlet (232) of the shuttle valve;
the actuating mechanism (40) comprises a first oil port (41) and a second oil port (42);
the third oil inlet (231) is communicated with the second oil port (42), a fifth oil inlet (233) of the shuttle valve is communicated with the power generation set (10), and a fourth oil inlet (232) is communicated with the first oil port (41);
the return oil of the actuating mechanism (40) flows to the fourth oil inlet (232) through the first oil port (41) and flows to the power generation set (10) through the fifth oil inlet (233); or the return oil of the actuating mechanism (40) flows to the third oil inlet (231) through the second oil port (42) and flows to the power generation set (10) through the fifth oil inlet (233).
2. The return oil power generation system of claim 1, wherein the return valve block (20) further comprises two second check valves (25) arranged in pairs; the two second check valves (25) are respectively arranged between the third oil inlet (231) and the first check valve (24) adjacent to the third oil inlet (231), and between the fourth oil inlet (232) and the first check valve (24) adjacent to the fourth oil inlet (232).
3. The scavenge power generation system of claim 2, wherein the service valve group (30) includes a reversing valve (31); the reversing valve (31) comprises two working oil ports, and the two working oil ports are communicated with the oil return valve group (20); the reversing valve (31) further comprises a first control port (313) and a second control port (314), the first control port (313) is used for adjusting the communication between the fourth oil inlet (232) and the first oil port (41), and the second control port (314) is used for adjusting the communication between the third oil inlet (231) and the second oil port (42).
4. The scavenge power system of claim 3, wherein the service valve block (30) further includes a second overflow valve (32), the second overflow valve (32) in communication with a service port of the reversing valve (31);
and/or the working valve group (30) comprises a third overflow valve (33), and the third overflow valve (33) is communicated with the other working oil port of the reversing valve (31).
5. The return oil power generation system according to any one of claims 1-4, characterized in that the power generation set (10) comprises a first oil tank (11), a driver (12) and a generator (13);
first oil tank (11) with oil return valves (20) intercommunication, driving piece (12) set up in first oil tank (11) with between oil return valves (20), just driving piece (12) with generator (13) are connected, oil return valves (20) flow extremely the fluid of driving piece (12) can be used for generator (13) electricity generation.
6. The return oil power generation system according to claim 5, wherein the power generation set (10) further comprises a first overflow valve (14) and a second oil tank (15), the first overflow valve (14) is communicated with the second oil tank (15), and the first overflow valve (14) is communicated with the return valve set (20), and the first overflow valve (14) is used for adjusting the pressure of the return valve set (20).
7. The return oil power generation system according to claim 6, wherein the power generation group (10) further comprises a filter (16), the filter (16) being disposed between the first oil tank (11) and the driving member (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010268913.7A CN111503076B (en) | 2020-04-08 | 2020-04-08 | Oil return power generation system |
Applications Claiming Priority (1)
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| CN103556669A (en) * | 2013-10-15 | 2014-02-05 | 徐州徐工挖掘机械有限公司 | Swing energy recovery control device of hydraulic excavator |
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| US10030361B2 (en) * | 2014-04-03 | 2018-07-24 | Hitachi Construction Machinery Co., Ltd. | Construction machine |
| JP6302772B2 (en) * | 2014-06-30 | 2018-03-28 | 日立建機株式会社 | Construction machine hydraulic system |
| CN105840598B (en) * | 2016-05-25 | 2017-08-25 | 华侨大学 | The drive system that a kind of engineering machinery turntable energy is recycled automatically |
| US10337532B2 (en) * | 2016-12-02 | 2019-07-02 | Caterpillar Inc. | Split spool valve |
| CN110374940B (en) * | 2019-08-21 | 2024-05-17 | 山河智能装备股份有限公司 | Winch potential energy real-time recycling system and control method thereof |
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