CN111765150B - Hydraulic energy intelligent storage and accurate transfer device control system - Google Patents

Hydraulic energy intelligent storage and accurate transfer device control system Download PDF

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CN111765150B
CN111765150B CN202010529285.3A CN202010529285A CN111765150B CN 111765150 B CN111765150 B CN 111765150B CN 202010529285 A CN202010529285 A CN 202010529285A CN 111765150 B CN111765150 B CN 111765150B
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electrified
liquid
accumulator
valve
main
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CN111765150A (en
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刘艳雄
舒昱文
徐志成
华林
王根聚
潘振鹏
乔天明
谭晨曦
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Wuhan University of Technology WUT
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Wuhan University of Technology WUT
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
    • F16B1/02—Means for securing elements of mechanisms after operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • 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
    • F15B21/08—Servomotor systems incorporating electrically operated control means

Abstract

The invention discloses a hydraulic energy intelligent storage and accurate transmission device control system.A main energy accumulator is connected with a gas interface of a gas cavity pressure regulator through a gas connecting pipe; a high-speed gas switch valve is arranged on the gas connecting pipe; the liquid interface of the main energy accumulator is communicated with the three-position four-way electromagnetic valve through an oil liquid connecting pipe; the gas cavity pressure regulator is connected with the high-speed liquid switch valve through an oil liquid connecting pipe, and the high-speed liquid switch valve is connected with the three-position four-way electromagnetic valve; the displacement sensor (8) transmits displacement and speed signals of the piston of the main energy accumulator (12) to the controller (6), and the controller (6) is in signal connection with the high-speed gas switch valve (2), the high-speed liquid switch valve (4) and the three-position four-way electromagnetic valve (5) at the same time. The problem of the uncontrollable not enough of traditional energy storage ware is solved, and then improve hydraulic system's energy consumption problem, thereby adjust energy storage ware energy storage ability and be applicable to different operating modes.

Description

Hydraulic energy intelligent storage and accurate transfer device control system
Technical Field
The invention relates to a hydraulic energy storage device, in particular to a control system of a hydraulic energy intelligent storage and accurate transfer device. The energy storage capacity and the output capacity of the energy accumulator are adjusted by detecting the piston displacement and the piston speed of the energy storage device, and the energy storage device can be used for various controllable hydraulic energy storage devices, such as hydraulic machines, fine blanking machine tools and the like.
Background
Conventional hydraulic systems can be divided into two categories: hydraulic transmission systems, which have the main function of transmitting power and motion, and hydraulic control systems, which have the output of a hydraulic system that meets specific performance requirements. The biggest problem faced by current hydraulic systems is the problem of energy utilization rate, and because of the particularity of hydraulic systems, there is great energy loss and remains to be solved, and hydraulic means energy storage ware, be equivalent to a storage element in hydraulic systems, according to the different operating condition of hydraulic systems, when the system needs energy, provide the system with the energy in the energy storage ware, when there is the surplus energy in the system, the energy can be transferred and stored in the energy storage ware. The hydraulic energy storage and precise use effect can be achieved, and if the hydraulic energy storage and precise use effect is reasonably applied to a hydraulic system, the energy loss phenomenon of the hydraulic system can be greatly reduced. However, the conventional accumulator cannot be used for complicated changes due to the setting of the air cavity space and the liquid cavity space, some uncontrollable phenomena occur, and the energy consumption problem of a hydraulic system cannot be improved.
Disclosure of Invention
The invention aims to provide a control system of a hydraulic energy intelligent storage and accurate transfer device, which solves the problem of uncontrollable defects of a traditional energy accumulator, further improves the energy consumption problem of a hydraulic system, and adjusts the energy storage capacity of the energy accumulator so as to be suitable for different working conditions.
In order to solve the technical problems, the invention adopts the following technical scheme:
a control system for a hydraulic energy intelligent storage and accurate transfer device is characterized by comprising a main energy accumulator (12), an air cavity pressure regulator (3), a high-speed gas switch valve (2), a high-speed liquid switch valve (4), a three-position four-way electromagnetic valve (5), a displacement sensor (8) and a controller (6); the gas interface of the main accumulator (12) is connected with the gas interface of the gas cavity pressure regulator (3) through a gas connecting pipe (1); a high-speed gas switch valve (2) is arranged on a gas connecting pipe (1) between the main energy accumulator (12) and the gas cavity pressure regulator (3); a liquid interface of the main energy accumulator (12) is communicated with an interface A of the three-position four-way electromagnetic valve (5) through an oil liquid connecting pipe (7); a liquid interface of the air cavity pressure regulator (3) is connected with a high-speed liquid switch valve (4) through an oil liquid connecting pipe (7), and the high-speed liquid switch valve (4) is connected with an interface B of the three-position four-way electromagnetic valve (5); the displacement sensor (8) transmits displacement and speed signals of the piston of the main energy accumulator (12) to the controller (6), and the controller (6) is in signal connection with the high-speed gas switch valve (2), the high-speed liquid switch valve (4) and the three-position four-way electromagnetic valve (5) at the same time.
Furthermore, the speed and displacement signals of the main energy accumulator (12) are detected through the piston displacement sensor, critical displacement and critical speed are set, when the piston speed and the displacement are detected to be in different states, the controller controls the high-speed gas switch valve, the high-speed liquid switch valve and the stations of the three-position four-way electromagnetic valve, different working states of the main energy accumulator and the gas pressure regulator are achieved, and then the hydraulic energy storage and accurate transmission of the whole device are controlled.
Further, setting four critical displacements of a liquid cavity of the main accumulator (12) to be l0，l1，l2，l3The displacement travel of the entire main accumulator (12) is trisected by four critical displacement points.
Further, the controller (6) is a PLC controller.
Further, the critical speed of the main accumulator (12) is set to v0And v1And v is0＜v1。
Further, when the main energy accumulator (12) enters and exits liquid, the displacement sensor (8) detects a displacement signal l of the main energy accumulator (12); according to the relation between the displacement signal and the critical displacement, the piston movement speed v of the main energy accumulator (12) is further detected, and the different working states of the main energy accumulator (12) and the gas pressure regulator are controlled by controlling the YV1 of the high-speed gas switch valve (2), the YV2 of the high-speed liquid switch valve (4), the YV3 end and the YV4 end of the three-position four-way electromagnetic valve (5) through the relation between the piston movement speed v and the critical speed, so that the energy storage amount of the main energy accumulator (12) is controlled.
Further, when the main accumulator (12) is fed with liquid, the displacement sensor detects a displacement signal; when l is2＜l＜l3When the liquid is in the liquid inlet state, the liquid amount in the main energy accumulator (12) is very small; at the moment, the piston movement speed v of the main accumulator (12) is further detected, and when v is more than v1When it is used, YV1 is notElectrifying, not electrifying YV2, electrifying the YV3 end, and increasing the pre-charging pressure of the main accumulator (12) when the three valve positions are 000; when v is detected0＜v＜v1When the valve is in the open state, the YV1 is not electrified, the YV2 is not electrified, the YV4 end is electrified, the three valve positions are 001, and the pre-charging pressure of the main accumulator (12) is increased; when v < v is detected0When the hydraulic system is used, YV1 is electrified, YV2 is not electrified, the YV4 end is electrified, the three valve positions are 101, and the main accumulator (12) is kept to normally work under the conditions of low energy and low hydraulic pressure;
when l is1＜l＜l2When the main accumulator (12) is filled with a normal amount of liquid and is in a liquid inlet state, the movement speed of a piston of the main accumulator (12) is further detected, and when v is more than v1When the valve is in a closed state, the YV1 is electrified, the YV2 is not electrified, the YV3 end is electrified, the three valve positions are 100, and the main accumulator and the air cavity pressure regulator are respectively filled with liquid; when v is detected0＜v＜v1When YV1 is de-energized, YV2 is de-energized, YV4 is energized, and the three valve positions are 001, increasing the pre-charge pressure of the accumulator. When v < v is detected0When the valve is in a closed state, the YV1 is electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 110, and the main accumulator is kept to normally work;
when l is0＜l＜l1When the pressure is higher than the pressure, the main accumulator is filled with more liquid and is in a liquid inlet state, the movement speed of the piston is further detected, and when v is higher than v1When the valve is in a closed state, the YV1 is not electrified, the YV2 is not electrified, the YV4 is not electrified, the three valve positions are 100, and the main accumulator is charged to the maximum energy storage and liquid storage amount; when v is detected0＜v＜v1When the valve is in a closed state, the YV1 is not electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 001, and the stored liquid and stored energy of the main energy accumulator are adjusted; when v < v is detected0When the valve is in a closed state, the YV1 is electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 110, the air cavity pressure regulator (3) and the system are disconnected, and the main accumulator works normally.
Further, when the main energy accumulator (12) discharges liquid, the displacement sensor detects a displacement signal; when l is2＜l＜l3When the liquid is in the liquid inlet state, the liquid amount in the main energy accumulator is very small; further detecting the movement speed of the piston when v > v1When the YV1 is electrified, the YV2 is not electrifiedYV3 is electrified, the positions of the three valves are 100, and the main energy accumulator can provide huge liquid flow instantly to promote the liquid discharging process due to the action of the independent air chamber; when v is detected0＜v＜v1When the valve is in the working state, YV1 is not electrified, YV2 is not electrified, YV4 is not electrified, the three valve positions are 001, and the liquid flow and the hydraulic pressure of the main accumulator (12) are adjusted; when v < v is detected0When the system is in work, YV1 is electrified, YV2 is not electrified, YV4 is not electrified, and the three valve positions are 101, so that only the main accumulator (12) is connected to the system to normally work;
when l is1＜l＜l2When the piston moves, the main accumulator is filled with liquid with a common amount and is in a liquid discharging state, and the movement speed of the piston is further detected; when v > v1When the valve is in a closed state, the YV1 is electrified, the YV2 is not electrified, the YV3 is electrified, the three valve positions are 100, and the independent air chamber can instantly provide large liquid flow to promote the liquid discharging process; when v is detected0＜v＜v1When the valve is in the working state, YV1 is not electrified, YV2 is not electrified, YV4 is not electrified, the three valve positions are 001, and the liquid flow and the pressure of the main accumulator (12) are adjusted; when v < v is detected0When the system is used, YV1 is electrified, YV2 is electrified, YV3 is electrified, and the positions of the three valves are 110, so that only the main accumulator (3) is connected into the system, and the normal work of the main accumulator (12) is kept;
when l is0＜l＜l1When the pressure is higher than the pressure, the main accumulator is filled with more liquid and is in a liquid inlet state, the movement speed of the piston is further detected, and when v is higher than v1When the hydraulic pressure of the system is smaller than the original hydraulic pressure of the accumulator, YV1 is not electrified, YV2 is not electrified, YV3 is not electrified, the three valve positions are 000, and the hydraulic pressure of the system is in a quick liquid discharging stage; when v is detected0＜v＜v1When the valve is in the working state, YV1 is not electrified, YV2 is not electrified, YV4 is not electrified, the three valve positions are 001, and the liquid flow and the pressure of the main accumulator (12) are adjusted; when v < v is detected0When the valve is in use, YV1 is not electrified, YV2 is electrified, YV3 is electrified, three valve positions are 010, and the air cavity pressure regulator (3) and the system are disconnected, so that the main accumulator (12) works normally.
Compared with the prior art, the hydraulic energy intelligent storage and accurate transfer device control system can control the energy storage capacity of the energy accumulator and the transfer of hydraulic energy through the controller, so that the energy storage capacity of the main energy accumulator is controlled. Specifically, through a control program set by the patent, after the piston displacement of the main energy accumulator and the air cavity pressure regulator is monitored, the control system adjusts the proper high-speed gas switch valve, the high-speed liquid switch valve and the three-position four-way solenoid valve, so that the piston displacement of the main energy accumulator and the air cavity pressure regulator is adjusted, and the energy storage capacity of the energy accumulator is further adjusted.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a hydraulic energy intelligent storage and precise transmission device control system of the invention.
The reference numerals in the figures correspond to the following: the system comprises a gas connecting pipe 1, a high-speed gas switch valve 2, a gas cavity pressure regulator 3, a high-speed liquid switch valve 4, a three-position four-way electric valve 5, a controller 6, an oil connecting pipe 7, a displacement sensor 8, an oil interface 9, a sealing device 10, a piston 11, a main accumulator 12 and a gas interface 13.
FIG. 2 is a control flow diagram and effects of each valve station of the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
The control system for the hydraulic energy intelligent storage and accurate transfer device comprises a main energy accumulator 12, an air cavity pressure regulator 3, a high-speed gas switch valve 2, a high-speed liquid switch valve 4, a three-position four-way electromagnetic valve 5, a gas connecting pipe 1, an oil connecting pipe 7, a displacement sensor 8 and a PLC (programmable logic controller) 6. The gas interface 13 of the main accumulator 12 is connected with the gas interface of the gas cavity pressure regulator 3 through a gas connecting pipe 1, the gas connecting pipe 1 is divided into two sections, and a high-speed gas switch valve 2 is connected in series between the two sections. And a liquid interface of the main accumulator 12 is communicated with an interface A of the three-position four-way electromagnetic valve 5 through an oil liquid connecting pipe 7. The liquid interface of the air cavity pressure regulator 3 is connected with the high-speed liquid switch valve 4 through an oil liquid connecting pipe 7, and the high-speed liquid switch valve 4 is connected with the interface B of the three-position four-way electromagnetic valve 5 to form a loop of the controllable energy storage device.
The displacement sensor 8 transmits a displacement signal of the piston to the PLC controller 6, and transmits a piston speed signal to the PLC controller 6, and the PLC controller 6 controls the stations of the high-speed gas switch valve 2, the high-speed liquid switch valve 4 and the three-position four-way electromagnetic valve 5 through the piston displacement and the piston speed signal, so as to control the energy storage capacity of the main energy accumulator 12.
When liquid is fed from the liquid inlet and outlet, the displacement sensor 8 detects a displacement signal, i.e. l is measured2＜l＜l3When the liquid quantity in the main energy accumulator is very small and in a liquid inlet state, the movement speed of the piston is further detected, and when v is more than v1When YV1 is de-energized, YV2 is de-energized, YV3 is energized, and the three valve positions are 000, which raises the pre-charge pressure of the main accumulator. When v is detected0＜v＜v1When YV1 is de-energized, YV2 is de-energized, YV4 is energized, and the three valve positions are 001, increasing the pre-charge pressure of the accumulator. When v < v is detected0At the moment, YV1 is electrified, YV2 is not electrified, YV4 is electrified, three valve positions are 101, and the main accumulator is kept to normally work under the condition of low energy and low hydraulic pressure. ② when l1＜l＜l2When the piston is in the liquid inlet state, the main accumulator is filled with liquid in a general amount, and the motion speed of the piston is further detected when v is more than v1When the valve is in a closed state, the YV1 is electrified, the YV2 is not electrified, the YV3 is electrified, the three valve positions are 100, and the main accumulator and the air cavity pressure regulator are respectively charged. When v is detected0＜v＜v1When YV1 is de-energized, YV2 is de-energized, YV4 is energized, and the three valve positions are 001, increasing the pre-charge pressure of the accumulator. When v < v is detected0At the moment, YV1 is electrified, YV2 is electrified, YV3 is electrified, the positions of the three valves are 110, and the main accumulator is kept to work normally. ③ Ben0＜l＜l1When the pressure is higher than the pressure, the main accumulator is filled with more liquid and is in a liquid inlet state, the movement speed of the piston is further detected, and when v is higher than v1When the YV1 is not electrified, the YV2 is not electrified, the YV4 is not electrified, the three valve positions are 100, and the main accumulator is charged to the maximum energy storage amount and the maximum liquid storage amount. When v is detected0＜v＜v1When it is used, YV1 is notThe electrified YV2 is electrified, the YV3 is electrified, the positions of the three valves are 001, and the stored liquid and the stored energy of the main accumulator are adjusted at the moment. When v < v is detected0When the valve is in a closed state, the YV1 is electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 110, the air cavity pressure regulator and the system are disconnected, and the main accumulator works normally.
When the liquid is discharged from the liquid inlet and outlet, the displacement sensor detects the displacement signal, i2＜l＜l3When the liquid quantity in the main energy accumulator is very small and in a liquid inlet state, the movement speed of the piston is further detected, and when v is more than v1When YV1 is electrified, YV2 is not electrified, YV3 is electrified, the positions of the three valves are 100, and the main accumulator can provide huge liquid flow instantly due to the action of the independent air chamber to promote the liquid discharging process. When v is detected0＜v＜v1When YV1 is not energized, YV2 is not energized, YV4 is energized, and the three valve positions are 001, at which time the hydraulic flow and hydraulic pressure of the primary accumulator are regulated. When v < v is detected0At the moment, YV1 is electrified, YV2 is not electrified, YV4 is electrified, and the positions of the three valves are 101, so that only the main accumulator is connected into the system to normally work. ② when l1＜l＜l2When the piston is in the liquid discharging state, the main accumulator is filled with liquid in a normal amount, the movement speed of the piston is further detected, and when v is more than v1When the valve is in a closed state, YV1 is electrified, YV2 is not electrified, YV3 is electrified, and the positions of the three valves are 100, so that the independent air chambers can instantly provide large liquid flow to promote the liquid discharging process. When v is detected0＜v＜v1When YV1 is not energized, YV2 is not energized, YV4 is energized, and the three valve positions are 001, the liquid flow and pressure of the main accumulator are adjusted. When v < v is detected0At the moment, YV1 is electrified, YV2 is electrified, YV3 is electrified, and the positions of the three valves are 110, so that only the main accumulator is connected into the system, and the normal work of the main accumulator is kept. ③ Ben0＜l＜l1When the pressure is higher than the pressure, the main accumulator is filled with more liquid and is in a liquid inlet state, the movement speed of the piston is further detected, and when v is higher than v1When the hydraulic pressure of the system is smaller than the original hydraulic pressure of the accumulator, YV1 is not electrified, YV2 is not electrified, YV3 is not electrified, the three valve positions are 000, and the hydraulic pressure of the system is in a quick liquid discharging stage. When v is detected0＜v＜v1When the YV1 is not electrified, the YV2 is not electrified, and the YV4 is electrifiedAnd the three valve positions are 001, and the liquid flow and the pressure of the main accumulator are adjusted at the moment. When v < v is detected0When the valve is in a closed state, the YV1 is not electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 010, and the air cavity pressure regulator and the system are disconnected, so that the main accumulator works normally.

Claims (2)

1. A control system for a hydraulic energy intelligent storage and accurate transfer device is characterized by comprising a main energy accumulator (12), an air cavity pressure regulator (3), a high-speed gas switch valve (2), a high-speed liquid switch valve (4), a three-position four-way electromagnetic valve (5), a displacement sensor (8) and a controller (6); the gas interface of the main accumulator (12) is connected with the gas interface of the gas cavity pressure regulator (3) through a gas connecting pipe (1); a high-speed gas switch valve (2) is arranged on a gas connecting pipe (1) between the main energy accumulator (12) and the gas cavity pressure regulator (3); a liquid interface of the main energy accumulator (12) is communicated with an interface A of the three-position four-way electromagnetic valve (5) through an oil liquid connecting pipe (7); a liquid interface of the air cavity pressure regulator (3) is connected with a high-speed liquid switch valve (4) through an oil liquid connecting pipe (7), and the high-speed liquid switch valve (4) is connected with an interface B of the three-position four-way electromagnetic valve (5); the displacement sensor (8) transmits displacement and speed signals of the piston of the main energy accumulator (12) to the controller (6), and the controller (6) is in signal connection with the high-speed gas switch valve (2), the high-speed liquid switch valve (4) and the three-position four-way electromagnetic valve (5) at the same time; the speed and displacement signals of the main energy accumulator (12) are detected through a piston displacement sensor, critical displacement and critical speed are set, when the piston speed and the displacement are detected to be in different states, a controller controls the stations of a high-speed gas switch valve, a high-speed liquid switch valve and a three-position four-way electromagnetic valve, different working states of the main energy accumulator and a gas pressure regulator are realized, and then the storage and accurate transmission of hydraulic energy of the whole device are controlled; setting four critical displacements of a liquid cavity of the main accumulator (12) to be l respectively0，l1，l2，l3The displacement stroke of the whole main energy accumulator (12) is divided into three equal parts by four critical displacement points; setting the critical piston speed of the main accumulator (12) to v0And v1And v is0<v1；
In main energy storageWhen the accumulator (12) is fed with liquid and discharged with liquid, the displacement sensor (8) detects displacement signals of the main accumulator (12); according to the relation between the displacement signal and the critical displacement, the piston movement speed v of the main energy accumulator (12) is further detected, and the different working states of the main energy accumulator (12) and the gas pressure regulator are controlled by controlling the YV1 of the high-speed gas switch valve (2), the YV2 of the high-speed liquid switch valve (4), the YV3 end and the YV4 end of the three-position four-way electromagnetic valve (5) through the relation between the piston movement speed v and the critical speed, so that the energy storage amount of the main energy accumulator (12) is controlled; when the main energy accumulator (12) is fed with liquid, the displacement sensor detects a displacement signal; when l is2<l<l3When the liquid is in the liquid inlet state, the liquid amount in the main energy accumulator (12) is very small; the piston movement speed v of the main accumulator (12) is further detected, and when v>v1When the valve is in a closed state, the YV1 is not electrified, the YV2 is not electrified, the YV3 end is electrified, the three valve positions are 000, and the pre-charging pressure of the main accumulator (12) is increased; when v is detected0<v<v1When the valve is in the open state, the YV1 is not electrified, the YV2 is not electrified, the YV4 end is electrified, the three valve positions are 001, and the pre-charging pressure of the main accumulator (12) is increased; when v is detected<v0When the hydraulic system is used, YV1 is electrified, YV2 is not electrified, the YV4 end is electrified, the three valve positions are 101, and the main accumulator (12) is kept to normally work under the conditions of low energy and low hydraulic pressure;
when l is1<l<l2When the main accumulator (12) is filled with a normal amount of liquid and is in a liquid inlet state, the movement speed of a piston of the main accumulator (12) is further detected, and when v is>v1When the valve is in a closed state, the YV1 is electrified, the YV2 is not electrified, the YV3 end is electrified, the three valve positions are 100, and the main accumulator and the air cavity pressure regulator are respectively filled with liquid; when v is detected0<v<v1When YV1 is not energized, YV2 is not energized, YV4 is energized, three valve positions are 001, the pre-charge pressure of the accumulator is increased, and when v is detected<v0When the valve is in a closed state, the YV1 is electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 110, and the main accumulator is kept to normally work;
when l is0<l<l1When the piston moves, the main accumulator is filled with more liquid and is in a liquid inlet state, the movement speed of the piston is further detected, and when v is>v1When the current is not applied, YV1 and YV2 are not appliedWhen the electricity YV4 is electrified, the three valve positions are 100, and the main accumulator is charged to the maximum energy storage and liquid storage amount; when v is detected0<v<v1When the valve is in a closed state, the YV1 is not electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 001, and the stored liquid and stored energy of the main energy accumulator are adjusted; when v is detected<v0When the valve is in a closed state, the YV1 is electrified, the YV2 is electrified, the YV3 is electrified, the three valve positions are 110, the air cavity pressure regulator (3) and the system are disconnected, and the main energy accumulator works normally; when the main energy accumulator (12) discharges liquid, the displacement sensor detects a displacement signal; when l is2<l<l3When the liquid is in the liquid inlet state, the liquid amount in the main energy accumulator is very small; further detecting the moving speed of the piston when v>v1When the valve is in a closed state, the YV1 is electrified, the YV2 is not electrified, the YV3 is electrified, the three valve positions are 100, and the main energy accumulator can provide huge liquid flow instantly due to the action of the independent air chamber to promote the liquid discharging process; when v is detected0<v<v1When the valve is in the working state, YV1 is not electrified, YV2 is not electrified, YV4 is not electrified, the three valve positions are 001, and the liquid flow and the hydraulic pressure of the main accumulator (12) are adjusted; when v is detected<v0When the system is in work, YV1 is electrified, YV2 is not electrified, YV4 is not electrified, and the three valve positions are 101, so that only the main accumulator (12) is connected to the system to normally work;
when l is1<l<l2When the piston moves, the main accumulator is filled with liquid with a common amount and is in a liquid discharging state, and the movement speed of the piston is further detected; when v is>v1When the valve is in a closed state, the YV1 is electrified, the YV2 is not electrified, the YV3 is electrified, the three valve positions are 100, and the independent air chamber can instantly provide large liquid flow to promote the liquid discharging process; when v is detected0<v<v1When the valve is in the working state, YV1 is not electrified, YV2 is not electrified, YV4 is not electrified, the three valve positions are 001, and the liquid flow and the pressure of the main accumulator (12) are adjusted; when v is detected<v0When the system is used, YV1 is electrified, YV2 is electrified, YV3 is electrified, and the positions of the three valves are 110, so that only the main accumulator (12) is connected into the system, and the normal work of the main accumulator (12) is kept;
when l is0<l<l1When the piston moves, the main accumulator is filled with more liquid and is in a liquid inlet state, the movement speed of the piston is further detected, and when v is>v1When the hydraulic pressure of the system is smaller than the original hydraulic pressure of the accumulator, YV1 is not electrified, YV2 is not electrified, YV3 is not electrified, the three valve positions are 000, and the hydraulic pressure of the system is in a quick liquid discharging stage; when v is detected0<v<v1When the valve is in the working state, YV1 is not electrified, YV2 is not electrified, YV4 is not electrified, the three valve positions are 001, and the liquid flow and the pressure of the main accumulator (12) are adjusted; when v is detected<v0When the valve is in use, YV1 is not electrified, YV2 is electrified, YV3 is electrified, three valve positions are 010, and the air cavity pressure regulator (3) and the system are disconnected, so that the main accumulator (12) works normally.
2. The hydraulic energy intelligent storage and precision transfer device control system of claim 1, wherein: the controller (6) is a PLC controller.
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JPS5855165A (en) * 1981-09-30 1983-04-01 Ube Ind Ltd Controller for packing in accumulator
US5265421A (en) * 1992-07-20 1993-11-30 Westinghouse Electric Corp. Underwater hydraulic system for reducing liquidborne noise
JPH0890201A (en) * 1994-09-14 1996-04-09 Toshiba Mach Co Ltd Injection device of die casting machine
CN101476571B (en) * 2009-01-24 2011-01-05 燕山大学 Parameter self-adapting and regulation leather bag type hydraulic accumulator
CN107084162B (en) * 2017-05-12 2018-10-09 武汉理工大学 A kind of input-output characteristic controllable hydraulic energy storage equipment
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