CN105626355A - Self-adaptive hydraulic potential energy converting device - Google Patents

Self-adaptive hydraulic potential energy converting device Download PDF

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Publication number
CN105626355A
CN105626355A CN201610057043.2A CN201610057043A CN105626355A CN 105626355 A CN105626355 A CN 105626355A CN 201610057043 A CN201610057043 A CN 201610057043A CN 105626355 A CN105626355 A CN 105626355A
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China
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potential energy
hydraulic cylinder
hydraulic
source
pressure
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CN105626355B (en
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姜彤
郑祥常
马娴
陈伟丽
傅昊
何旭洁
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North China Electric Power University
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North China Electric Power University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03BMACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates

Abstract

Provided is a self-adaptive hydraulic potential energy converting device. The device comprises a first hydraulic cylinder set, a second hydraulic cylinder set, a first potential energy source, a second potential energy source, multiple valves connected with the corresponding hydraulic cylinders, pistons in the hydraulic cylinders and piston rods connected with the pistons, wherein the first hydraulic cylinder set and the second hydraulic cylinder set are each composed of multiple hydraulic cylinders of different sectional areas. The first hydraulic cylinder set is connected to the first potential energy source through the corresponding valves, and the second hydraulic cylinder set is connected to the second potential energy source through the corresponding valves. The piston rods of the first hydraulic cylinder set and the pistons of the second hydraulic cylinder set are connected in series. The first potential energy source is used for pushing the first hydraulic cylinder set and the second hydraulic cylinder set by reducing potential energy, the second potential energy source increases the potential energy through movement of the first hydraulic cylinder set and the second hydraulic cylinder set, and the area ratio of the first hydraulic cylinder set to the second hydraulic cylinder set is adjusted through the multiple valves on the basis of the potential energy changes of the first potential energy source and the second potential energy source. Energy conversion and transmission of two or more sets of different potential energies can be achieved through the self-adaptive hydraulic potential energy converting device.

Description

Self-adaptive hydraulic potential energy converting and energy device
Technical field
The present invention relates to mechanical driving device technical field, especially relate to hydraulic booster potential energy converting and energy device technique.
Background technology
In recent years, along with the fast development of new forms of energy, compressed-air energy storage, generation technology also improve constantly, and have in a lot of prior art it can be seen that a lot of utilization compression air expansion realizes promoting the technology of water generating. But in this technology being used alone Problem On Compressed Air With Water generating, there is acute variation along with the Rapid Variable Design of gas volume in compressed-air actuated pressure, the service life of the plant equipment such as hydraulic motor can be produced bigger infringement.
While Water Pumped Storage Station Technology development, the design of the tradition hydraulic turbine is still that the peak efficiency limiting hydraulic turbine generating is as determining head generating, the blade of the hydraulic turbine can be produced bigger infringement by the head being continually changing, and the generating of this varying head also cannot realize higher electrical generation efficiency.
Development along with city, floor in modern city constantly increases, high level is also sent water to have higher requirement by this floor constantly increased, use the normal water hydraulic water that common water pump send water possibly cannot realize higher floor, the daily life of urbanite can be caused not convenient to a certain extent.
Summary of the invention
Given this, it is an object of the invention to overcome in prior art compressed-air actuated pressure, along with the Rapid Variable Design of gas volume, acute variation can occur, the service life of the plant equipment such as hydraulic motor can be produced bigger infringement, the blade of the hydraulic turbine can be produced the problems such as bigger infringement by the head being continually changing, a kind of self-adaptive hydraulic potential energy converting and energy device is proposed, described self-adaptive hydraulic potential energy converting and energy device two ends can connect the height-low pressure source of potential energy of different potential energy size, by controlling the on off state of valve, determine that each hydraulic cylinder is connected to the source of potential energy of a certain potential energy size, thus producing different size of pressure difference value, obtain making a concerted effort of different directions and size, thus determining the direction of motion and the velocity variations speed of hydraulic gear, the motor process making hydraulic gear realizes adaptive change.
In order to realize this purpose, the technical scheme that the present invention takes is as follows.
A kind of self-adaptive hydraulic potential energy converting and energy device, described device includes first group of hydraulic cylinder being made up of the hydraulic cylinder of multiple different cross-sectional and second group of hydraulic cylinder, the first source of potential energy, the second source of potential energy, the piston connected in multiple valves of each hydraulic cylinder, each hydraulic cylinder and connects the piston rod of piston, wherein
First group of hydraulic cylinder is connected to the first source of potential energy by valve,
Second group of hydraulic cylinder is connected to the second source of potential energy by valve,
The piston rod of first group of hydraulic cylinder and second group of hydraulic cylinder is connected in series,
First source of potential energy promotes first group of hydraulic cylinder and second group of hydraulic cylinder by reducing potential energy, and the second source of potential energy increases potential energy because of the motion of first group of hydraulic cylinder and second group of hydraulic cylinder,
According to the first source of potential energy and the operating pressure change of the second source of potential energy, by the plurality of valve adjust first group of hydraulic cylinder, second group of hydraulic cylinder and area ratio, enable the power that two groups of source of potential energy produce on the piston rod to cancel out each other to greatest extent, piston movement realizes energy between two groups of source of potential energy, shifts maximization;
Described self-adaptive hydraulic potential energy converting and energy device also includes hydraulic mechanism control unit and operational factor measures adjunct unit, hydraulic mechanism control unit controls speed and the direction of piston movement, by providing additional energy to realize the stable operation of hydraulic mechanism and to control potential energy converting and energy efficiency, operational factor measures adjunct unit by the output of hydraulic mechanism control unit or pressure or water pump torque are detected, it is analyzed in conjunction with valve state and the speed of service, formulate correct valve switch strategy, to determine and area ratio, ensure that energy transmission efficiency between two groups of source of potential energy maximizes.
Each in the hydraulic cylinder of the plurality of different cross-sectional belongs to first group of hydraulic cylinder regularly or second group of hydraulic cylinder, the first source of potential energy and the liquid in the second source of potential energy can be dissimilar liquid.
Each in the hydraulic cylinder of the plurality of different cross-sectional does not belong to first group of hydraulic cylinder regularly or second group of hydraulic cylinder, the first source of potential energy and the liquid in the second source of potential energy are same type liquid.
Described first source of potential energy and the second source of potential energy all include liquid storage container pair, liquid in the opposite end container of described liquid storage container pair is under different pressure, wherein two groups of source of potential energy can share one of them container, and the container adhering to two source of potential energy totally in four containers separately can have one to share.
The opening and closing of the plurality of valve in described self-adaptive hydraulic potential energy converting and energy device is:
Liquid pressure difference in first source of potential energy opposite end container is P1, the liquid pressure difference in the second source of potential energy opposite end container is P2, in first group of hydraulic cylinder, the hydraulic pressure area of each hydraulic cylinder is SA1,SA2,SA3,...,SAm, in second group of hydraulic cylinder, the hydraulic pressure area of each hydraulic cylinder is SB1,SB2,SB3,...,SBn, m is the number of first group of hydraulic cylinder, and n is the number of second group of hydraulic cylinder, by opening and closing valve S from first group of hydraulic cylinderA1,SA2,SA3,...,SAmSection hydraulic area is selected to connect the first source of potential energy, the S from first group of hydraulic cylinderB1,SB2,SB3,...,SBnSelecting section hydraulic area to connect the second source of potential energy, both are combined with m*n kind, wherein P2*SBj-P1*SAiHaving k kind within the scope of one, i and j is belonging respectively to m and n, and wherein k is positive integer, selects S in this k kindAiMaximum combination, selects P in these combinations2*SBj-P1*SAiMinimum that combination of absolute value, so that it is determined that SBj, and then determine the state of each valve folding.
Wherein, described hydraulic mechanism control unit change the longitudinal force that is added on piston and change the liquid pressure of a cylinder in second group of hydraulic cylinder, flow realizes liquid flowing and controls two ways, wherein,
Change the mode of the longitudinal force being added on piston, can be realized by one of in following several ways, control piston rod movement by linear electric motors, or control system by additional hydraulic, or electric rotating machine is by controlling piston rod movement after belt or gear shift;
Change the liquid pressure flow mode of a cylinder in second group of hydraulic cylinder, the connection pipeline of a cylinder body can increase a liquid pump in second group of hydraulic cylinder, adopt variable frequency regulating speed control hydraulic pump, or connecting, pipeline increases proportioning valve and the combination of liquid pump, realize proportion adjustment, or increase servosystem and the combination of liquid pump, it is achieved SERVO CONTROL;
Hydraulic control system falls the difference of pressure produced by the second source of potential energy and pressure produced by the first source of potential energy by excess power output offset, controls potential energy converting and energy speed by controlling the piston speed of service.
Each two ends in the hydraulic cylinder of the plurality of different cross-sectional have two groups of high pressure port and low-pressure port, described high pressure port is connected to pressure piping bus, described low-pressure port is connected to low pressure pipeline bus, when described hydraulic cylinder to piston stroke terminal, the plurality of valve opening and closing, the high pressure port and the low-pressure port that make the hydraulic cylinder other end are opened, former high pressure port and low-pressure port are closed, promote the piston in hydraulic cylinder to move to reverse stroke direction, realize reciprocating motion of the pistons with this.
Liquid pressure difference in two containers of the liquid storage container centering of described first source of potential energy can allow to be continually changing at work, run in one stroke at piston, the change of the conversion power that the pressure of change causes mainly is made up by the output of hydraulic mechanism control unit, after one stroke completes, the valve switch strategy of next stroke is determined, it is ensured that realize valve switch strategy optimum under new pressure status according to last state.
By adopting the self-adaptive hydraulic potential energy converting and energy device of the present invention, it is possible to realize techniques below effect.
1 present invention can realize energy conversion and the transmission of two or more sets different potential energy sizes by self-adaptive hydraulic potential energy converting and energy device, can be used for the energy conversion between different hydraulic fluid, and serve the effect that can continuously adjust, thus the use scope of the present invention has also been significantly increased, improve the economic benefit of the present invention.
2 present invention can as the auxiliary construction of energy storage technology, it is achieved the application of the energy storage technology under some operation principle.
3 present invention can realize installing on the spot as engineering construction, and the requirement of potential condition is low over the ground, reduces construction difficulty, reduces construction cost.
4 present invention may be used for the various engineering ground needing and utilizing high pressure source of potential energy to be improved by low pressure source of potential energy energy, for instance in the engineerings such as high pressure water extraction. Can realize quickly and easily between high-low pressure potential energy steady, adjustably change.
Accompanying drawing explanation
Fig. 1 is self-adaptive hydraulic potential energy converting and energy device Hybrid connections mode schematic diagram in the specific embodiment of the invention.
Fig. 2 is the fixing connected mode schematic diagram of self-adaptive hydraulic potential energy converting and energy device in the specific embodiment of the invention.
Fig. 3 is the structure diagram of self-adaptive hydraulic potential energy converting and energy device in the specific embodiment of the invention.
Fig. 4 is the one in the specific embodiment of the invention, and namely the pressure conversion being continually changing is become the situation of constant pressure by self-adaptive hydraulic potential energy converting and energy device.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is elaborated.
The example embodiment that following discloses are detailed. But, concrete structure disclosed herein and function detail are merely for the sake of the purpose describing example embodiment.
It should be appreciated, however, that the present invention is not limited to disclosed particular exemplary embodiment, but cover all modifications, equivalent and the alternative that fall within the scope of the disclosure. In the description to whole accompanying drawings, identical accompanying drawing labelling represents identical element.
It will also be appreciated that term "and/or" includes one or more relevant any and all combination listing item as used in this. It will further be appreciated that when parts or unit are referred to as " connection " or during " coupled " to another parts or unit, it can be directly connected or coupled to miscellaneous part or unit, or can also there is intermediate member or unit. Additionally, be used for describing other words of relation between parts or unit should understand in the same fashion (such as, " and between " to " directly between ", " adjacent " to " direct neighbor " etc.).
The implication representated by accompanying drawing labelling in the present invention is:
I-high pressure port,
II-low-pressure port,
III-pressure piping bus,
IV-low pressure pipeline bus,
1a-liquid storage container,
1b-liquid storage container,
2-self-adaptive hydraulic potential energy converting and energy device,
3-eminence pond,
4-lower pond,
5-valve,
6-piston,
7-piston rod,
8-Hydrauservo System,
9-hydraulic cylinder.
In above parts title, for instance valve 5 is a general designation, actually includes valve 5a, 5b, 5c ..., 5p, hydraulic cylinder 9 is also a general designation, actually includes tetra-hydraulic cylinders of 9a, 9b, 9c, 9d.
In configuration as above, hydraulic cylinder is four, but this is only used to convenient example that technical solution of the present invention is described, indeed, it is possible to utilize the hydraulic cylinder of multiple varying number to implement technical scheme.
The operation principle of the self-adaptive hydraulic potential energy converting and energy device of the present invention is as follows.
Accessing the first source of potential energy in self-adaptive hydraulic potential energy converting and energy device one end, the other end accesses the second source of potential energy. Liquid in first source of potential energy or the second source of potential energy is connected by the hydraulic cylinder of high and low pressure conduit with valve with self-adaptive hydraulic potential energy converting and energy device. The source of potential energy that the hydraulic cylinder in self adaptation potential energy converting and energy device is connected is determined by controlling the on off state of valve. At the initial time of hydraulic gear setting in motion, in order to improve the rapidity of motion, it is desirable to have relatively higher acceleration, now, some hydraulic cylinders being connected to the source of potential energy with higher pressure, thus producing bigger pressure difference value, promoting the motion of whole hydraulic gear. Move to after certain speed until hydraulic gear, in order to realize constant motor process at the uniform velocity, need to reduce the difference of the pressure of the pressure of the first source of potential energy generation and the generation of the second source of potential energy, make the pressure of the first source of potential energy generation and the pressure equilibrium of the second source of potential energy generation as far as possible, now need to adjust the valve switch state of each hydraulic cylinder, the difference making the pressure of the first source of potential energy generation and the pressure of the second source of potential energy generation reduces as much as possible, it is achieved constant motor process at the uniform velocity. When hydraulic gear is close to the terminal of movement travel, need quick smoothly to realize the retarded motion of hydraulic gear, now, adjust the valve state of each hydraulic cylinder, change the element that the pressure in the source of potential energy that hydraulic cylinder connects is high/low, thus changing the suffered direction made a concerted effort of hydraulic gear so that hydraulic gear realizes retarded motion under certain resistance, finally realize the steady stopping of hydraulic gear. In this process, realized the energy transmission between the first source of potential energy and second source of potential energy at self adaptation potential energy converting and energy device two ends by the motion of fluid in hydraulic cylinder, complete acting process.
After hydraulic gear stops, now the source of potential energy energy direction of transfer at self adaptation potential energy converting and energy device two ends is exchanged, starting inverse process motion, start the energy transfer process of next round, the inverse process of hydraulic gear motion needs same control strategy.
The another kind of operation principle that the present invention realizes is such that moving the starting stage at hydraulic gear, set each valve switch state, after hydraulic gear setting in motion, hydraulic gear the motor connected carries out realizing in motor process the tool method of acceleration, moderating process as balancing force. When needs hydraulic gear is accelerated moving, motor movement direction is identical with the direction of motion of hydraulic gear; When needs hydraulic gear carries out retarded motion, motor movement direction is contrary with the direction of motion of hydraulic gear. This motor can realize with linear electric motors or crank motor.
Fig. 3 is the structure diagram of self-adaptive hydraulic potential energy converting and energy device in one detailed description of the invention of the present invention. As shown in Figure 3, self-adaptive hydraulic potential energy converting and energy device adopts packet connected mode, in figure 4 hydraulic cylinders are divided into two groups, two of which hydraulic cylinder (9a, 9b) is one group, it is called first group of hydraulic cylinder, connect the source of potential energy A that liquid storage container (1a, 1b) forms, be also referred to as the first source of potential energy. Hydraulic cylinder (9c, 9d) is one group, is called second group of hydraulic cylinder, connects eminence pond 3 and the source of potential energy B of lower pond 4 composition, is also referred to as the second source of potential energy. The wherein long-pending respectively 1m of the hydraulic surface with 9b of hydraulic cylinder 9a2And 3m2, the hydraulic pressure area score of the hydraulic pressure area of hydraulic cylinder 9c and 9d Wei 1m2:3m2��
First source of potential energy includes liquid storage container (1a, 1b), the medium coexisted for aqueous vapor in wherein. We claim the first source of potential energy to include liquid storage container to (1a, 1b), and claim liquid storage container 1a and 1b opposite end liquid storage container each other. Wherein in liquid storage container 1a, gas pressure intensity is 1.6MPa, and in liquid storage container 1b, gas pressure intensity is 0.1MPa, is wherein the high-pressure container closed in liquid storage container 1a, and liquid storage container 1b is then directly connected with air, and ignores both differences in height. Second source of potential energy includes eminence pond 3 and lower pond 4, and correspondingly, eminence pond 3 and lower pond 4 also form liquid storage container pair. Difference in height between eminence pond 3 and lower pond 4 is 40.8m, and both are directly connected with air.
In the specific embodiment of the invention, self-adaptive hydraulic potential energy converting and energy device controls, by the on off state of control valve, the source of potential energy that hydraulic cylinder connects in hydraulic gear motor process, realize the adaptive motion of hydraulic gear, complete the energy transmission of two ends source of potential energy, and realize the maximized effect of potential energy converting and energy speed between two source of potential energy. Detailed process is: high pressure gas expansion in liquid storage container 1a promotes liquid to enter hydraulic cylinder, drives piston movement, thus being extracted into eminence pond 3 from lower pond 4 by liquid, completes gases at high pressure potential energy to gravitational potential transformation of energy. Period makes on piston rod suffered minimum with joint efforts by valve control strategies, makes potential energy converting and energy speed maximize simultaneously.
Such as, high pressure gas expansion in liquid storage container 1a, its pressure is down to 0.2Mpa from 1.6MPa, then the pressure difference of liquid storage container 1a and 1b is down to 0.1MPa from 1.5MPa, i.e. P1The value of (pressure difference between the first source of potential energy opposite end liquid storage container) is 1.5MPa to 0.1MPa, constantly reduces. Again because the difference in height between eminence pond 3 and lower pond 4 is 40.8m, and both are directly connected with air, so the pressure difference in eminence pond 3 and both lower ponds 4 is 0.4MPa, and think invariable, i.e. P2(pressure difference between the second source of potential energy opposite end liquid storage container) is 0.4MPa.
It addition, hydraulic cylinder 9a and 9b can be combined into 1m2��2m2��3m2And 4m2Deng 4 areas, hydraulic cylinder 9a and 9b's and area being denoted as SA, in like manner hydraulic cylinder 9c and 9d is also such, and itself and area are denoted as SB.
The working mechanism of self-adaptive hydraulic potential energy converting and energy device in the specific embodiment of the invention introduced below.
If Hydrauservo System can the balancing force Fe on compensating piston connecting rod be 4 �� 105N��
The liquid storage container 1a initial pressure of mesohigh gas is 1.6MPa, then the initial pressure difference of liquid storage container 1a and 1b is 1.5MPa, again because the pressure difference between eminence pond 3 and lower pond 4 is 0.4MPa, know according to valve control strategies, make P2*SB-P1*SA less than Fe, make P2*SB-P1*SA more than 0, it is possible to select and Line Integral Wei SA=1m simultaneously2, SB=4m2��
So valve 5b, 5c, 5g, 5h, 5j, 5k, 5n, 5o open during original state, valve 5a, 5d, 5e, 5f, 5i, 5l, 5m, 5p close, and so namely achieve the respective area of SA and SB.
In original state situation, make a concerted effort to be sized to 1*105N, direction is along piston rod from right to left, being compensated by Hydrauservo System with joint efforts of this part, and piston takes exercises from left to right, time low order end, valve 5a, 5d, 5i, 5l, 5m, 5p open, valve 5b, 5c, 5j, 5k, 5n, 5o close, namely all of valve state is that valve 5a, 5d, 5e, 5f, 5i, 5l, 5m, 5p open, valve 5b, 5c, 5g, 5h, 5j, 5k, 5n, 5o close, thus piston is changed by valve switch varying motion direction, turn left from the right side and take exercises. So circulation, piston moves repeatedly.
Along with the motion repeatedly of piston, the liquid in lower pond 4 is fed in eminence pond 3, and the liquid of liquid storage container 1a enters in liquid storage container 1b, and the pressure in liquid storage container 1a reduces. When pressure is reduced to 1.3MPa, namely when the pressure difference between liquid storage container 1a and 1b reduces to 1.2MPa, know according to valve control strategies, P2*SB-P1*SA will be made less than Fe, making P2*SB-P1*SA more than 0, what at this time meet this requirement selects there is SA=1m with area simultaneously2, SB=4m2Or SA=1m2, SB=3m2. Further according to the principle that potential energy converting and energy speed is maximum, selecting areal array is SA=1m2, SB=4m2. Although when pressure difference is 1.2MPa, exert oneself that require and area ratio of the Hydrauservo System that can meet has two groups, but under final that select and area ratio and original state and area ratio being not changed in, so valve is failure to actuate.
When pressure continues to be reduced between 1.2MPa to 0.8MPa, know also according to valve control strategies, the area of selection respectively SA=1m2, SB=3m2, so the switch of valve needs to change. Assuming that this time, valve state was that valve 5b, 5c, 5g, 5h, 5j, 5k, 5n, 5o open, valve 5a, 5d, 5e, 5f, 5i, 5l, 5m, 5p close. Then because pressure difference is reduced to, the valve occurred between 1.2MPa to 0.8MPa is changed to valve 5k closedown, valve 5i opens, namely the state of all of valve is that valve 5b, 5c, 5g, 5h, 5i, 5j, 5n, 5o open, and valve 5a, 5d, 5e, 5f, 5k, 5l, 5m, 5p close. Thus piston is taken exercises from left to right, time low order end, valve 5a, 5d, 5m, 5p open, valve 5b, 5c, 5n, 5o close, namely all of valve state is that valve 5a, 5d, 5g, 5h, 5i, 5j, 5m, 5p open, and valve 5b, 5c, 5e, 5f, 5k, 5l, 5n, 5o close. Thus piston is changed by valve switch varying motion direction, turn left from the right side and take exercises. So circulation, piston moves repeatedly.
Therefore, a kind of self-adaptive hydraulic potential energy converting and energy device disclosed in the specific embodiment of the present invention, described device includes first group of hydraulic cylinder being made up of the hydraulic cylinder of multiple different cross-sectional and second group of hydraulic cylinder, the first source of potential energy, the second source of potential energy, the piston connected in multiple valves of each hydraulic cylinder, each hydraulic cylinder and connects the piston rod of piston, wherein
First group of hydraulic cylinder is connected to the first source of potential energy by valve,
Second group of hydraulic cylinder is connected to the second source of potential energy by valve,
The piston rod of first group of hydraulic cylinder and second group of hydraulic cylinder is connected in series,
First source of potential energy promotes first group of hydraulic cylinder and second group of hydraulic cylinder by reducing potential energy, and the second source of potential energy increases potential energy because of the motion of first group of hydraulic cylinder and second group of hydraulic cylinder,
Potential energy according to the first source of potential energy and the second source of potential energy changes, by the plurality of valve adjust first group of hydraulic cylinder, second group of hydraulic cylinder and area ratio.
Thus the present invention can realize energy conversion and the transmission of two or more sets different potential energy sizes by self-adaptive hydraulic potential energy converting and energy device, can be used for the energy conversion between different hydraulic fluid, and serve the effect that can continuously adjust, thus the use scope of the present invention has also been significantly increased, improve the economic benefit of the present invention.
So repeat above step, pressure in liquid storage container 1a is gradually reduced, the pressure difference of liquid storage container 1a and 1b also gradually decreases, first group of hydraulic cylinder corresponding in pressure difference excursion and second group of hydraulic cylinder and area ratio and optimum and area ratio table specific as follows (1) shown in. Different valve switch state is correspond to area, as shown in table (2) relative to different.
Area ratio and optimum that the different pressure difference of table (1) is corresponding select with area ratio
Valve open-close state corresponding to table (2) different area
Pressure in liquid storage container 1a is gradually reduced, and the pressure difference of liquid storage container 1a and 1b is gradually reduced to 0.1MPa, and work completes. In this process, the high pressure gas expansion in liquid storage container 1a, the water in lower pond 4 is constantly pumped to eminence pond 3, completes the conversion to liquid gravitational potential energy of the high pressure potential energy. Realize adaptive function by valve control strategies simultaneously, make to be externally supplied simultaneously energy minimum when, potential energy converting and energy speed reaches to maximize.
Fig. 4 is the one in the specific embodiment of the invention, and namely the pressure conversion being continually changing is become the situation of constant pressure by self-adaptive hydraulic potential energy converting and energy device. In figure, left side is irregular massif, and the flowing water in massif is linked in high pressure port in I, owing to massif is irregular and flowing water situation is changeable, so the pressure being linked in high pressure port I is change. In figure, the top of the massif on right side is provided with a pond, and pond is linked in high pressure port I, owing to the pond height of massif is certain, so produced pressure is constant.
In present embodiment, the energy of the source of potential energy that pressure is continually changing by self adaptation liquid potential energy converting and energy device converts the energy of the source of potential energy of invariablenes pressure of liquid to. As shown in Figure 1, in a detailed description of the invention, each in the hydraulic cylinder of the plurality of different cross-sectional does not belong to first group of hydraulic cylinder or second group of hydraulic cylinder regularly, such as some hydraulic cylinder may belong to first group of hydraulic cylinder as required, second group of hydraulic cylinder can also be belonged to, the first source of potential energy can be connected to, the second source of potential energy can also be connected to, therefore the liquid in the first source of potential energy and the second source of potential energy may mix, therefore in this embodiment, the liquid in described first source of potential energy and the second source of potential energy is same type liquid.
As shown in Figure 2, in another embodiment, each in the hydraulic cylinder of the plurality of different cross-sectional belongs to first group of hydraulic cylinder or second group of hydraulic cylinder regularly, such as some hydraulic cylinder can only belong to first group of hydraulic cylinder, or second group of hydraulic cylinder can only be belonged to, correspondingly, the first source of potential energy and the second source of potential energy can only be connected to, therefore the liquid in the first source of potential energy and the second source of potential energy will not mix, and the liquid in described first source of potential energy and the second source of potential energy can be dissimilar liquid.
Described first source of potential energy and the second source of potential energy all include liquid storage container pair, contain the liquid of different pressure in the opposite end container of described liquid storage container pair.
It addition, the liquid pressure difference in the liquid storage container centering opposite end container of described first source of potential energy is realized by the gas pressure intensity in the container of opposite end, the liquid pressure difference in the liquid storage container centering opposite end container of described second source of potential energy is realized by the difference in height of opposite end container.
Change the mode of the longitudinal force being added on piston, can be realized by one of in following several ways, control piston rod movement by linear electric motors, or control system by additional hydraulic, or electric rotating machine is by controlling piston rod movement after belt or gear shift.
Change the liquid pressure flow mode of a cylinder in second group of hydraulic cylinder, the connection pipeline of a cylinder body can increase a liquid pump in second group of hydraulic cylinder, adopt variable frequency regulating speed control hydraulic pump, or connecting, pipeline increases proportioning valve and the combination of liquid pump, realize proportion adjustment, or increase servosystem and the combination of liquid pump, it is achieved SERVO CONTROL.
Hydraulic control system falls the difference of pressure produced by the second source of potential energy and pressure produced by the first source of potential energy by excess power output offset, controls potential energy converting and energy speed by controlling the piston speed of service.
Described self-adaptive hydraulic potential energy converting and energy device also includes operational factor and measures adjunct unit and hydraulic servo unit, described operational factor is measured adjunct unit and the output of hydraulic mechanism control unit or pressure or water pump torque is detected, it is analyzed in conjunction with valve state and the speed of service, formulate correct valve switch strategy, to determine and area ratio, ensure that energy transmission efficiency between two groups of source of potential energy maximizes, described hydraulic servo unit measures the power detection result of adjunct unit according to operational factor, controls the opening and closing of the plurality of valve.
Described hydraulic servo unit controls the opening and closing of the plurality of valve: the liquid pressure difference in the first source of potential energy opposite end container is P1, the liquid pressure difference in the second source of potential energy opposite end container is P2, in first group of hydraulic cylinder, the hydraulic pressure area of each hydraulic cylinder is SA1,SA2,SA3,...,SAm, in second group of hydraulic cylinder, the hydraulic pressure area of each hydraulic cylinder is SB1,SB2,SB3,...,SBn, the number of m and n respectively first group of hydraulic cylinder and second group of hydraulic cylinder, by opening and closing valve S from first group of hydraulic cylinderA1,SA2,SA3,...,SAmSection hydraulic area is selected to connect the first source of potential energy, the S from first group of hydraulic cylinderB1,SB2,SB3,...,SBnSelecting section hydraulic area to connect the second source of potential energy, both are combined with m*n kind, wherein P2*SBj-P1*SAiHaving k kind within the scope of one, i and j is belonging respectively to m and n, and wherein k is positive integer, selects S in this k kindAiMaximum combination, selects P in these combinations2*SBj-P1*SAiMinimum that combination of absolute value, so that it is determined that SBj, and then determine the state of each valve folding.
Wherein, described hydraulic servo unit is by controlling the opening and closing of the plurality of valve, pressure produced by the second source of potential energy is made after deducting the balancing force of pressure and Hydrauservo System produced by the first source of potential energy, to obtain the driving force of expectation, to control potential energy converting and energy speed.
Especially, described first group of hydraulic cylinder includes the first hydraulic cylinder and the second hydraulic cylinder, described second hydraulic cylinder group includes the 3rd hydraulic cylinder and the 4th hydraulic cylinder, the hydraulic pressure area ratio of described first hydraulic cylinder and the second hydraulic cylinder is 1:3, and the hydraulic pressure area ratio of described 3rd hydraulic fluid cylinder and the 4th hydraulic cylinder is 1:3.
Each two ends in the hydraulic cylinder of the plurality of different cross-sectional have two groups of high pressure port and low-pressure port, described high pressure port is connected to pressure piping bus, described low-pressure port is connected to low pressure pipeline bus, when described hydraulic cylinder to piston stroke terminal, the plurality of valve opening and closing, the high pressure port and the low-pressure port that make the hydraulic cylinder other end are opened, former high pressure port and low-pressure port are closed, promote the piston in hydraulic cylinder to move to reverse stroke, realize reciprocating motion of the pistons with this.
Therefore, the self-adaptive hydraulic potential energy converting and energy device of the present invention may be used for the various engineering ground needing and utilizing high pressure source of potential energy to be improved by low pressure source of potential energy energy, for instance in the engineerings such as high pressure water extraction. Can realize quickly and easily between high-low pressure potential energy steady, adjustably change.
It should be noted that; above-mentioned embodiment is only the present invention preferably embodiment; can not being understood as limiting the scope of the invention, without departing under present inventive concept premise, any minor variations that the present invention is done and modification belong to protection scope of the present invention.

Claims (8)

1. a self-adaptive hydraulic potential energy converting and energy device, described device includes first group of hydraulic cylinder being made up of the hydraulic cylinder of multiple different cross-sectional and second group of hydraulic cylinder, the first source of potential energy, the second source of potential energy, the piston connected in multiple valves of each hydraulic cylinder, each hydraulic cylinder and connects the piston rod of piston, wherein
First group of hydraulic cylinder is connected to the first source of potential energy by valve,
Second group of hydraulic cylinder is connected to the second source of potential energy by valve,
The piston rod of first group of hydraulic cylinder and second group of hydraulic cylinder is connected in series,
First source of potential energy promotes first group of hydraulic cylinder and second group of hydraulic cylinder by reducing potential energy, and the second source of potential energy increases potential energy because of the motion of first group of hydraulic cylinder and second group of hydraulic cylinder,
According to the first source of potential energy and the operating pressure change of the second source of potential energy, by the plurality of valve adjust first group of hydraulic cylinder, second group of hydraulic cylinder and area ratio, enable the power that two groups of source of potential energy produce on the piston rod to cancel out each other to greatest extent, piston movement realizes energy between two groups of source of potential energy, shifts maximization;
Described self-adaptive hydraulic potential energy converting and energy device also includes hydraulic mechanism control unit and operational factor measures adjunct unit, hydraulic mechanism control unit controls speed and the direction of piston movement, by providing additional energy to realize the stable operation of hydraulic mechanism and to control potential energy converting and energy efficiency, operational factor measures adjunct unit by the output of hydraulic mechanism control unit or pressure or water pump torque are detected, it is analyzed in conjunction with valve state and the speed of service, formulate correct valve switch strategy, to determine and area ratio, ensure that energy transmission efficiency between two groups of source of potential energy maximizes.
2. the self-adaptive hydraulic potential energy converting and energy device according to claim 1, it is characterized in that, each in the hydraulic cylinder of the plurality of different cross-sectional belongs to first group of hydraulic cylinder regularly or second group of hydraulic cylinder, the first source of potential energy and the liquid in the second source of potential energy can be dissimilar liquid.
3. the self-adaptive hydraulic potential energy converting and energy device according to claim 1, it is characterized in that, each in the hydraulic cylinder of the plurality of different cross-sectional does not belong to first group of hydraulic cylinder regularly or second group of hydraulic cylinder, the first source of potential energy and the liquid in the second source of potential energy are same type liquid.
4. the self-adaptive hydraulic potential energy converting and energy device according to claim 1, it is characterized in that, described first source of potential energy and the second source of potential energy all include liquid storage container pair, liquid in the opposite end container of described liquid storage container pair is under different pressure, wherein two groups of source of potential energy can share one of them container, and the container adhering to two source of potential energy totally in four containers separately can have one to share.
5. the self-adaptive hydraulic potential energy converting and energy device according to claim 1, it is characterised in that the opening and closing of the plurality of valve in described self-adaptive hydraulic potential energy converting and energy device is:
Liquid pressure difference in first source of potential energy opposite end container is P1, the liquid pressure difference in the second source of potential energy opposite end container is P2, in first group of hydraulic cylinder, the hydraulic pressure area of each hydraulic cylinder is SA1,SA2,SA3,...,SAm, in second group of hydraulic cylinder, the hydraulic pressure area of each hydraulic cylinder is SB1,SB2,SB3,...,SBn, m is the number of first group of hydraulic cylinder, and n is the number of second group of hydraulic cylinder, by opening and closing valve S from first group of hydraulic cylinderA1,SA2,SA3,...,SAmSection hydraulic area is selected to connect the first source of potential energy, the S from first group of hydraulic cylinderB1,SB2,SB3,...,SBnSelecting section hydraulic area to connect the second source of potential energy, both are combined with m*n kind, wherein P2*SBj-P1*SAiHaving k kind within the scope of one, i and j is belonging respectively to m and n, and wherein k is positive integer, selects S in this k kindAiMaximum combination, selects P in these combinations2*SBj-P1*SAiMinimum that combination of absolute value, so that it is determined that SBj, and then determine the state of each valve folding.
6. the self-adaptive hydraulic potential energy converting and energy device according to claim 5, it is characterized in that, described hydraulic mechanism control unit change the longitudinal force that is added on piston and change the liquid pressure of a cylinder in second group of hydraulic cylinder, flow realizes liquid flowing and controls two ways, wherein
Change the mode of the longitudinal force being added on piston, can be realized by one of in following several ways, control piston rod movement by linear electric motors, or control system by additional hydraulic, or electric rotating machine is by controlling piston rod movement after belt or gear shift;
Change the liquid pressure flow mode of a cylinder in second group of hydraulic cylinder, the connection pipeline of a cylinder body can increase a liquid pump in second group of hydraulic cylinder, adopt variable frequency regulating speed control hydraulic pump, or connecting, pipeline increases proportioning valve and the combination of liquid pump, realize proportion adjustment, or increase servosystem and the combination of liquid pump, it is achieved SERVO CONTROL;
Hydraulic control system falls the difference of pressure produced by the second source of potential energy and pressure produced by the first source of potential energy by excess power output offset, controls potential energy converting and energy speed by controlling the piston speed of service.
7. the self-adaptive hydraulic potential energy converting and energy device according to claim 1, it is characterized in that, each two ends in the hydraulic cylinder of the plurality of different cross-sectional have two groups of high pressure port and low-pressure port, described high pressure port is connected to pressure piping bus, described low-pressure port is connected to low pressure pipeline bus, when described hydraulic cylinder to piston stroke terminal, the plurality of valve opening and closing, the high pressure port and the low-pressure port that make the hydraulic cylinder other end are opened, former high pressure port and low-pressure port are closed, the piston in hydraulic cylinder is promoted to move to reverse stroke direction, reciprocating motion of the pistons is realized with this.
8. the self-adaptive hydraulic potential energy converting and energy device according to claim 1, it is characterized in that, liquid pressure difference in two containers of the liquid storage container centering of described first source of potential energy can allow to be continually changing at work, run in one stroke at piston, the change of the conversion power that the pressure of change causes mainly is made up by the output of hydraulic mechanism control unit, after one stroke completes, the valve switch strategy of next stroke is determined, it is ensured that realize valve switch strategy optimum under new pressure status according to last state.
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CN111734571A (en) * 2020-05-28 2020-10-02 华北电力大学 Multi-channel hydraulic cylinder compensation control device based on virtual pumping and storage

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