CN105626355B - Self-adaptive hydraulic potential energy conversion equipment - Google Patents
Self-adaptive hydraulic potential energy conversion equipment Download PDFInfo
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- CN105626355B CN105626355B CN201610057043.2A CN201610057043A CN105626355B CN 105626355 B CN105626355 B CN 105626355B CN 201610057043 A CN201610057043 A CN 201610057043A CN 105626355 B CN105626355 B CN 105626355B
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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
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Abstract
A kind of self-adaptive hydraulic potential energy conversion equipment, described device includes first group of hydraulic cylinder being made of the hydraulic cylinder of multiple and different sectional areas and second group of hydraulic cylinder, first source of potential energy, second source of potential energy, connect multiple valves of each hydraulic cylinder, the piston rod of piston and connection piston in each hydraulic cylinder, 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, second source of potential energy increases potential energy because of the movement of first group of hydraulic cylinder and second group of hydraulic cylinder, changed according to the potential energy of the first source of potential energy and the second source of potential energy, first group of hydraulic cylinder is adjusted by the multiple valve, second group of hydraulic cylinder and area ratio.The energy conversion of two or more sets different potential energy sizes can be realized by using the self-adaptive hydraulic potential energy conversion equipment of the present invention and is transferred.
Description
Technical field
The present invention relates to technical field of mechanical transmission, especially relate to hydraulic booster potential energy conversion equipment technology.
Background technology
In recent years, as the fast development of new energy, compressed-air energy storage, generation technology are also continuously improved, have many existing
Have in technology it can be seen that many realize the technology for promoting water power generation using compressed air expansion.But this be used alone is compressed
In the technology that air generates electricity with water, with the quick variation of gas volume acute variation can occur for the pressure of compressed air, to liquid
The service life of the mechanical equipments such as pressure motor can generate larger damage.
While Water Pumped Storage Station Technology continues to develop, the design of traditional hydraulic turbine, which is still, limits hydraulic turbine power generation
Peak efficiency determine head power generation, continually changing head can be to the larger damage of the blade of hydraulic turbine generation, and this change
Head power generation can not also realize higher electrical generation efficiency.
With the continuous development in city, the floor in modern city constantly increases, and this floor constantly increased is also right
High level send water to propose higher requirement, and the normal hydraulic pressure that sending water using common water pump possibly can not realize higher floor is used
Water can cause the daily life of city dweller not convenient to a certain extent.
The content of the invention
In consideration of it, it is an object of the invention to overcome the pressure of compressed air in the prior art quick with gas volume
Acute variation can occur for variation, and the service life of the mechanical equipments such as hydraulic motor can be generated and larger damage, is continually changing
The problems such as head can generate larger damage to the blade of the hydraulic turbine, proposes a kind of self-adaptive hydraulic potential energy conversion equipment, it is described from
Height-low pressure source of potential energy of different potential energy sizes can be connected by adapting to hydraulic potential energy converting and energy device both ends, pass through the switch of control valve
State determines that each hydraulic cylinder is connected to the source of potential energy of a certain potential energy size, so as to generate different size of pressure difference value, obtains
Making a concerted effort for different directions and size, so as to determine the direction of motion of hydraulic gear and velocity variations speed, makes hydraulic drive
The motion process of mechanism realizes adaptive change.
In order to realize this purpose, the technical solution that the present invention takes is as follows.
A kind of self-adaptive hydraulic potential energy conversion equipment, described device include what is be made of the hydraulic cylinder of multiple and different sectional areas
First group of hydraulic cylinder and second group of hydraulic cylinder, the first source of potential energy, the second source of potential energy, multiple valves, each liquid of each hydraulic cylinder of connection
The piston rod of piston and connection piston in cylinder pressure, wherein,
First group of hydraulic cylinder is connected to the first source of potential energy by the first valve group,
Second group of hydraulic cylinder is connected to the second source of potential energy by the second valve group,
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 is because of first
The movement of group hydraulic cylinder and second group of hydraulic cylinder increases potential energy,
According to the first source of potential energy and the running pressure change of the second source of potential energy, first group is adjusted by the multiple valve
Hydraulic cylinder, second group of hydraulic cylinder and area ratio, enable power that two groups of source of potential energy generate on the piston rod to greatest extent mutually
It offsets, realizes that energy shifts maximization between two groups of source of potential energy in piston motion；
The self-adaptive hydraulic potential energy conversion equipment further includes hydraulic mechanism control unit and operating parameter measures attached list
Member, the speed of hydraulic mechanism control unit control piston motion and direction, by providing additional energy to realize hydraulic mechanism
Stable operation simultaneously controls potential energy transfer efficiency, and operating parameter measurement adjunct unit passes through the output work to hydraulic mechanism control unit
Either pressure or water pump torque are detected rate, are analyzed with reference to valve state and the speed of service, formulate correct valve
Switching strategy, to determine to maximize with area ratio, guarantee energy transmission efficiency between two groups of source of potential energy.
Each in the hydraulic cylinder of multiple and different sectional areas regularly belongs to first group of hydraulic cylinder or second group of hydraulic cylinder,
Liquid in first source of potential energy and the second source of potential energy is different type liquid.
Each in the hydraulic cylinder of multiple and different sectional areas belongs to first group of hydraulic cylinder or second group of hydraulic pressure with being not fixed
Cylinder, the liquid in the first source of potential energy and the second source of potential energy is same type liquid.
First source of potential energy and the second source of potential energy include liquid storage container pair, in the opposite end container of the liquid storage container pair
Liquid be in different pressure, wherein two groups of source of potential energy share one of opposite end container, adhere to two source of potential energy separately four
There are one share in the container of opposite end.
The opening and closing of the multiple valve in the self-adaptive hydraulic potential energy conversion equipment is：
Liquid pressure difference in first source of potential energy opposite end container is P1, the liquid pressure in the second source of potential energy opposite end container is poor
For P2, the hydraulic pressure area of each hydraulic cylinder is S in first group of hydraulic cylinderA1,SA2,SA3,...,SAm, each hydraulic pressure in second group of hydraulic cylinder
The hydraulic pressure area of 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, is led to
It crosses and is opened and closed multiple valves from the S in first group of hydraulic cylinderA1,SA2,SA3,...,SAmSelected section hydraulic pressure area connects the first potential energy
Source, the S from second group of hydraulic cylinderB1,SB2,SB3,...,SBnSelected section hydraulic pressure area connects the second source of potential energy, the two combination
There are m*n kinds, wherein P2*SBj-P1*SAiThere are k kinds within the scope of one, i and j are belonging respectively to m and n, and wherein k is positive integer,
S is selected in this k kindAiMaximum combination, selects P in these combinations2*SBj-P1*SAiMinimum that combination of absolute value, from
And determine SBj, and then determine the state of each valve folding.
Wherein, the hydraulic mechanism control unit has change to be added in the longitudinal force on piston and change in second group of hydraulic cylinder
Liquid pressure, the flow of one cylinder realize liquid flowing control two ways, wherein,
Change the mode for being added in the longitudinal force on piston, by the realization of one of following several ways, pass through linear motor control
Piston rod movement processed after belt or gear shift either by additional hydraulic control system or electric rotating machine by controlling
Piston rod movement；
Change the liquid pressure flow mode of a cylinder in second group of hydraulic cylinder, cylinder body in second group of hydraulic cylinder
Increase a liquid pump in connecting pipe, increase using variable frequency regulating speed control hydraulic pump or in connecting pipe proportioning valve and
Liquid pump combines, and realizes proportion adjustment or increases servo-drive system and liquid pump combination, realizes SERVO CONTROL；
The additional hydraulic control system falls pressure caused by the second source of potential energy and the by excess power output offset
The difference of pressure caused by one source of potential energy, by the way that the piston speed of service is controlled to control potential energy conversion rate.
Each both ends in the hydraulic cylinder of the multiple different cross-sectional share two groups of high pressure ports and low-pressure port, institute
It states high pressure port and is connected to pressure piping bus, the low-pressure port is connected to low pressure pipeline bus, when the hydraulic cylinder
During to piston stroke terminal, the multiple valve opening and closing so that the high pressure port and low-pressure port of the hydraulic cylinder other end are opened, former
High pressure port and low-pressure port are closed, and the piston in hydraulic cylinder is promoted to be moved to reverse stroke direction, piston reciprocating is realized with this
Movement.
Liquid pressure difference in two containers of liquid storage container centering of first source of potential energy allows constantly to become at work
Change, in piston runs one stroke, the variation of conversion power is mainly by hydraulic mechanism control unit caused by the pressure of variation
Output power make up, after the completion of one stroke, the valve switch strategy of next stroke is determined according to last state, it is ensured that
Realize valve switch strategy optimal under new pressure status.
By using the self-adaptive hydraulic potential energy conversion equipment of the present invention, following technique effect can be realized.
1 present invention can realize the energy of two or more sets different potential energy sizes by self-adaptive hydraulic potential energy conversion equipment
Conversion and transmission can be used for the energy conversion between different hydraulic fluids, and play the role of to continuously adjust,
So as to which the use scope of the present invention also be significantly increased, the economic benefit of the present invention is improved.
2 present invention can realize the application of the energy storage technology under some operation principles as the auxiliary construction of energy storage technology.
3 present invention can be realized as engineering construction to be installed on the spot, and the requirement of potential condition is low over the ground, and it is difficult to reduce construction
Degree reduces construction cost.
4 present invention can be used for the various engineering grounds for needing to improve low pressure source of potential energy energy using high pressure source of potential energy,
Such as in the engineerings such as high pressure water extraction.Can quickly and easily realize between high-low pressure potential energy it is steady, adjustably convert.
Description of the drawings
Fig. 1 is self-adaptive hydraulic potential energy conversion equipment Hybrid connections schematic diagram in the specific embodiment of the invention.
Fig. 2 is that self-adaptive hydraulic potential energy conversion equipment is fixedly connected with schematic diagram in the specific embodiment of the invention.
Fig. 3 is the structure diagram of self-adaptive hydraulic potential energy conversion equipment in the specific embodiment of the invention.
Fig. 4 is one kind in the specific embodiment of the invention, i.e., will constantly be become by self-adaptive hydraulic potential energy conversion equipment
The pressure conversion of change is into the situation of constant pressure.
Specific embodiment
Below in conjunction with the accompanying drawings, elaborate to the present invention.
The detailed example embodiment of following discloses.However, concrete structure disclosed herein and function detail merely for the sake of
The purpose of example embodiment is described.
It should be appreciated, however, that the present invention is not limited to disclosed particular exemplary embodiment, but covering falls into disclosure model
Enclose interior all modifications, equivalent and alternative.In the description to whole attached drawings, identical reference numeral represents identical member
Part.
It will also be appreciated that term "and/or" includes the arbitrary of one or more relevant list items as used in this
With all combinations.It will further be appreciated that when component or unit are referred to as " connecting " or during " coupled " to another component or unit, it
It can be directly connected or coupled to other component or unit or there may also be intermediate member or units.In addition, for describing
Between component or unit other words of relation should understand in the same fashion (for example, " between " to " directly between ",
" adjacent " is to " direct neighbor " etc.).
The present invention in reference numeral representated by meaning be：
I- high pressure ports,
II- low-pressure ports,
III- pressure piping buses,
IV- low pressure pipeline buses,
1a- liquid storage containers,
1b- liquid storage containers,
2- self-adaptive hydraulic potential energy conversion equipments,
3- eminences pond,
4- lowers pond,
5- valves,
6- pistons,
7- piston rods,
8- Hydrauservo Systems,
9- hydraulic cylinders.
In more than parts title, for example, valve 5 be one general designation, actually including valve 5a, 5b, 5c ..., 5p,
Hydraulic cylinder 9 is also a general designation, actually including tetra- hydraulic cylinders of 9a, 9b, 9c, 9d.
In above configuration, hydraulic cylinder is four, but this illustrates that one of technical solution of the present invention is shown just for the sake of facilitating
Example, indeed, it is possible to implement technical scheme using the hydraulic cylinder of multiple and different quantity.
The operation principle of the self-adaptive hydraulic potential energy conversion equipment of the present invention is as follows.
The first source of potential energy is accessed in self-adaptive hydraulic potential energy conversion equipment one end, the other end accesses the second source of potential energy.First
Liquid in source of potential energy or the second source of potential energy passes through high and low pressure conduit and valve and self-adaptive hydraulic potential energy conversion equipment
Hydraulic cylinder is connected.Determine that the hydraulic cylinder in adaptive potential energy conversion equipment is connected by the on off state of control valve
Source of potential energy.In the initial time of hydraulic gear setting in motion, in order to improve the rapidity of movement, it is necessary to there is the comparison high
Acceleration at this point, several hydraulic cylinders are connected to the source of potential energy with higher pressure, so as to generate larger pressure difference value, pushes away
Move the movement of entire hydraulic gear.After hydraulic gear moves to certain speed, in order to realize constant fortune at the uniform velocity
Dynamic process makes the first potential energy as far as possible, it is necessary to the difference for the pressure that the pressure and the second source of potential energy that first source of potential energy that reduces generates generate
The pressure that the pressure and the second source of potential energy that source generates generate is balanced, needs to adjust the valve switch state of each hydraulic cylinder at this time,
So that the difference of pressure that pressure and the second source of potential energy that the first source of potential energy generates generate reduces as much as possible, realize it is constant at the uniform velocity
Motion process., it is necessary to quick smoothly realize hydraulic gear when terminal of the hydraulic gear close to movement travel
Retarded motion, at this point, adjusting the valve state of each hydraulic cylinder, the pressure changed in the source of potential energy that hydraulic cylinder is connected is high/low
Element, so as to change suffered by hydraulic gear make a concerted effort direction so that hydraulic gear is realized under certain resistance to be subtracted
Speed movement, the final steady stopping for realizing hydraulic gear.During this, realized certainly by the movement of fluid in hydraulic cylinder
The energy transmission between first source of potential energy and the second source of potential energy at potential energy conversion equipment both ends is adapted to, completes acting process.
After hydraulic gear stopping after, at this time the source of potential energy energy transmission direction at adaptive potential energy conversion equipment both ends into
Row is exchanged, and starts inverse process movement, starts the energy transfer process of next round, and the inverse process needs of hydraulic gear movement are same
The control strategy of sample.
Another operation principle that the present invention realizes is such：The starting stage is moved in hydraulic gear, is set
Each valve switch state, after hydraulic gear setting in motion, by the motor that hydraulic gear is connected as compensation
Power carries out realizing acceleration, the tool method of moderating process in motion process.When hydraulic gear is needed to be accelerated,
Motor movement direction is identical with the direction of motion of hydraulic gear；When hydraulic gear is needed to carry out retarded motion, electricity
The machine direction of motion is opposite with the direction of motion of hydraulic gear.This motor can use linear motor or crank motor to realize.
Fig. 3 is the structure diagram of self-adaptive hydraulic potential energy conversion equipment in a specific embodiment of the invention.Such as Fig. 3 institutes
Show, 4 hydraulic cylinders in figure are divided into two groups, two of which liquid by self-adaptive hydraulic potential energy conversion equipment using grouping connection mode
Cylinder pressure (9a, 9b) is one group, is known as first group of hydraulic cylinder, and the source of potential energy A that connection liquid storage container (1a, 1b) forms is also referred to as
First source of potential energy.Hydraulic cylinder (9c, 9d) is one group, is known as second group of hydraulic cylinder, and connection eminence pond 3 and lower pond 4 form
Source of potential energy B, also referred to as the second source of potential energy.Wherein hydraulic cylinder 9a's Wei 1m with the hydraulic pressure Line Integral of 9b2And 3m2, hydraulic cylinder
The hydraulic pressure area score of the hydraulic pressure area and 9d of 9c Wei not 1m2:3m2。
First source of potential energy includes liquid storage container (1a, 1b), wherein the interior medium coexisted for aqueous vapor.We claim the first source of potential energy
Including liquid storage container to (1a, 1b), and claim liquid storage container 1a and 1b opposite end liquid storage container each other.Gas in wherein liquid storage container 1a
Pressure is 1.6MPa, and gas pressure intensity is 0.1MPa in liquid storage container 1b, is the high-pressure container of closing in wherein liquid storage container 1a,
Liquid storage container 1b is then directly connected with air, and ignores the difference in height of the two.Second source of potential energy includes eminence pond 3 and lower water
Pond 4, correspondingly, eminence pond 3 and lower pond 4 also form liquid storage container pair.Height between eminence pond 3 and lower pond 4
Degree difference is 40.8m, and the two is directly connected with air.
Self-adaptive hydraulic potential energy conversion equipment leads in hydraulic gear motion process in the specific embodiment of the invention
The source of potential energy that the on off state control hydraulic cylinder of control valve is connected is crossed, realizes the adaptive motion of hydraulic gear, it is complete
Into the energy transmission of both ends source of potential energy, and realize the maximized effect of potential energy conversion rate between two source of potential energy.Detailed process
For：High pressure gas expansion in liquid storage container 1a promotes liquid to enter hydraulic cylinder, drives piston motion, so as to by liquid from lower
Pond 4 is extracted into eminence pond 3, completes gases at high pressure potential energy to gravitational potential transformation of energy.Period is made by valve control strategies
Minimum of making a concerted effort suffered on piston rod is obtained, while causes the maximization of potential energy conversion rate.
Such as the high pressure gas expansion in liquid storage container 1a, pressure are down to 0.2Mpa from 1.6MPa, then liquid storage container 1a
With the pressure difference of 1b 0.1MPa, i.e. P are down to from 1.5MPa1The 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 the two
It is directly connected with air, so eminence pond 3 and the pressure difference in both lower ponds 4 are 0.4MPa, and thinks invariable, i.e.,
P2(pressure difference between the second source of potential energy opposite end liquid storage container) is 0.4MPa.
In addition, hydraulic cylinder 9a and 9b can be combined into 1m2、2m2、3m2And 4m2Deng 4 areas, by hydraulic cylinder 9a and 9b
SA is denoted as with area, similarly hydraulic cylinder 9c and 9d is also in this way, itself and area are denoted as SB.
The working mechanism of self-adaptive hydraulic potential energy conversion equipment in the specific embodiment of the invention introduced below.
If Hydrauservo System can be on compensating piston connecting rod balancing force Fe be 4 × 105N。
The initial pressure of liquid storage container 1a mesohigh gases is 1.6MPa, then the initial pressure differences of liquid storage container 1a and 1b are
1.5MPa, and because the pressure difference between eminence pond 3 and lower pond 4 is 0.4MPa, known according to valve control strategies, it
So that P2*SB-P1*SA is less than Fe, while P2*SB-P1*SA is caused to be more than 0, it is not SA=1m that can select with Line Integral2、SB
=4m2。
So during original state valve 5b, 5c, 5g, 5h, 5j, 5k, 5n, 5o open, valve 5a, 5d, 5e, 5f, 5i, 5l,
5m, 5p are closed, and so realize the respective areas of SA and SB.
In the case of original state, size of making a concerted effort is 1*105N, direction is from right to left, which makes a concerted effort along piston rod
It is compensated by Hydrauservo System, and piston is taken exercises from left to right, when to right end, valve 5a, 5d, 5i, 5l, 5m, 5p
It opens, valve 5b, 5c, 5j, 5k, 5n, 5o are closed, i.e., all valve states are valve 5a, 5d, 5e, 5f, 5i, 5l, 5m, 5p
It opens, valve 5b, 5c, 5g, 5h, 5j, 5k, 5n, 5o are closed, so as to which piston is changed by valve switch varying motion direction
Become, turn left and take exercises from the right side.So Xun Huan, piston move repeatedly.
With the movement repeatedly of piston, the liquid in lower pond 4 is fed in eminence pond 3, the liquid of liquid storage container 1a
Body enters in liquid storage container 1b, and the pressure in liquid storage container 1a reduces.When pressure is reduced to 1.3MPa, i.e. liquid storage container 1a and
When pressure difference between 1b reduces to 1.2MPa, known according to valve control strategies, P2*SB-P1*SA to be caused to be less than Fe, simultaneously
So that P2*SB-P1*SA is more than 0, at this time meet the requirement has SA=1m with area selection2, SB=4m2Or SA=1m2、
SB=3m2.Further according to the principle of potential energy conversion rate maximum, areal array is selected as SA=1m2, SB=4m2.Although in pressure
Difference contribute for the Hydrauservo System that in the case of 1.2MPa, can meet require have two groups with area ratio, but final choice
And area ratio and original state under and area ratio not changing, 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 face of selection
Product is respectively SA=1m2, SB=3m2, so the switch needs of valve change.Assuming that this when of valve state is valve
5b, 5c, 5g, 5h, 5j, 5k, 5n, 5o are opened, and valve 5a, 5d, 5e, 5f, 5i, 5l, 5m, 5p are closed.Then because pressure difference reduces
The valve variation occurred between to 1.2MPa to 0.8MPa is closed for valve 5k, valve 5i is opened, i.e., the shape of all valves
State is opened for valve 5b, 5c, 5g, 5h, 5i, 5j, 5n, 5o, and valve 5a, 5d, 5e, 5f, 5k, 5l, 5m, 5p are closed.So as to piston
It takes exercises from left to right, when to right end, valve 5a, 5d, 5m, 5p are opened, and valve 5b, 5c, 5n, 5o are closed, i.e., all
Valve state be valve 5a, 5d, 5g, 5h, 5i, 5j, 5m, 5p open, valve 5b, 5c, 5e, 5f, 5k, 5l, 5n, 5o close.
So as to which piston is changed by valve switch varying motion direction, turn left and take exercises from the right side.So Xun Huan, piston are transported repeatedly
It is dynamic.
Therefore, a kind of self-adaptive hydraulic potential energy conversion equipment, described device are disclosed in specific embodiment of the invention
Including first group of hydraulic cylinder being made of the hydraulic cylinder of multiple and different sectional areas and second group of hydraulic cylinder, the first source of potential energy, second
Source of potential energy, multiple valves of each hydraulic cylinder of connection, the piston in each hydraulic cylinder and the piston rod for connecting 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 is because of first
The movement of group hydraulic cylinder and second group of hydraulic cylinder increases potential energy,
Changed according to the potential energy of the first source of potential energy and the second source of potential energy, first group of hydraulic pressure is adjusted by the multiple valve
Cylinder, second group of hydraulic cylinder and area ratio.
Thus the present invention can realize two or more sets different potential energy sizes by self-adaptive hydraulic potential energy conversion equipment
Energy is converted and transferred, and be can be used for the energy conversion between different hydraulic fluids, and is played what can be continuously adjusted
Effect so as to which the use scope of the present invention also be significantly increased, improves the economic benefit of the present invention.
Above step is so repeated, the pressure in liquid storage container 1a is gradually reduced, the pressure difference of liquid storage container 1a and 1b
Also gradually decrease, first group of corresponding hydraulic cylinder and second group of hydraulic cylinder and area ratio and optimal in pressure difference excursion
And area ratio table specific as follows (1) shown in.Different valve switch states are corresponded to area compared with different, such as table (2)
It is shown.
The corresponding area ratio of table (1) difference pressure difference and the selection of optimal and 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 are gradually reduced to 0.1MPa, work
It completes.In this process, the high pressure gas expansion in liquid storage container 1a, the water in lower pond 4 are constantly pumped to height
Locate pond 3, complete conversion of the high pressure potential energy to liquid gravitational potential energy.Adaptive work(is realized by valve control strategies simultaneously
Can, while cause in the case of being externally supplied energy minimum, potential energy conversion rate reaches maximization.
Fig. 4 is one kind in the specific embodiment of the invention, i.e., will constantly be become by self-adaptive hydraulic potential energy conversion equipment
The pressure conversion of change is into the situation of constant pressure.It is irregular massif on the left of in figure, the flowing water in massif is linked into high pressure port
In middle I, since massif is irregular and flowing water situation is changeable, so the pressure being linked into high pressure port I is variation.In figure
The top of the massif on right side is set there are one pond, and pond is linked into high pressure port I, since the pond height of massif is certain,
So generated pressure is constant.
The energy of the continually changing source of potential energy of pressure is converted by adaptive liquid potential energy conversion equipment in present embodiment
The energy of the source of potential energy of invariablenes pressure of liquid.As shown in Figure 1, in a detailed embodiment, the liquid of the multiple different cross-sectional
Each in cylinder pressure belongs to first group of hydraulic cylinder or second group of hydraulic cylinder with being not fixed, such as some hydraulic cylinder is as needed
First group of hydraulic cylinder is may belong to, second group of hydraulic cylinder can also be belonged to, the first source of potential energy can be connected to, can also be connected to
Second source of potential energy, therefore the liquid in the first source of potential energy and the second source of potential energy may mix, therefore in this specific embodiment
In, the liquid in first source of potential energy and the second source of potential energy is same type liquid.
Each as shown in Fig. 2, in another embodiment, in the hydraulic cylinder of the multiple different cross-sectional
Regularly belong to first group of hydraulic cylinder or second group of hydraulic cylinder, for example, some hydraulic cylinder can only belong to first group of hydraulic cylinder or
Person can only belong to second group of hydraulic cylinder, correspondingly, can only be connected to the first source of potential energy and the second source of potential energy, therefore the first source of potential energy
It will not be mixed with the liquid in the second source of potential energy, the liquid in first source of potential energy and the second source of potential energy can be different type
Liquid.
First source of potential energy and the second source of potential energy include liquid storage container pair, in the opposite end container of the liquid storage container pair
Contain the liquid of different pressure.
In addition, the liquid pressure difference in the liquid storage container centering opposite end container of first source of potential energy is by the container of opposite end
Gas pressure intensity realizes, the liquid pressure difference in the liquid storage container centering opposite end container of second source of potential energy by opposite end container height
Difference is spent to realize.
Change the mode for being added in the longitudinal force on piston, can straight-line electric be passed through by the realization of one of following several ways
Machine control piston rod movement either by additional hydraulic control system or electric rotating machine by belt or gear shift after
Control piston rod movement.
Change the liquid pressure flow mode of a cylinder in second group of hydraulic cylinder, can in second group of hydraulic cylinder a cylinder
Increase a liquid pump in the connecting pipe of body, increase ratio using variable frequency regulating speed control hydraulic pump or in connecting pipe
Valve and liquid pump combination realize proportion adjustment or increase servo-drive system and liquid pump combination, realize SERVO CONTROL.
Hydraulic control system falls pressure caused by the second source of potential energy and the first source of potential energy by excess power output offset
The difference of generated pressure, by the way that the piston speed of service is controlled to control potential energy conversion rate.
The self-adaptive hydraulic potential energy conversion equipment further includes operating parameter measurement adjunct unit and hydraulic servo unit, institute
Stating output power of the operating parameter measurement adjunct unit to hydraulic mechanism control unit, either pressure or water pump torque are examined
It surveys, is analyzed with reference to valve state and the speed of service, formulate correct valve switch strategy, to determine and area ratio, guarantee
Energy transmission efficiency between two groups of source of potential energy maximizes, and the hydraulic servo unit measures the work(of adjunct unit according to operating parameter
Rate testing result controls the opening and closing of the multiple valve.
The hydraulic servo unit controls the opening and closing of the multiple valve to be：Liquid pressure in first source of potential energy opposite end container
It is strong poor for P1, the liquid pressure difference in the second source of potential energy opposite end container is P2, the hydraulic pressure area of each hydraulic cylinder in first group of hydraulic cylinder
For SA1,SA2,SA3,...,SAm, the hydraulic pressure area of each hydraulic cylinder is S in second group of hydraulic cylinderB1,SB2,SB3,...,SBn, m and n divide
Not Wei first group of hydraulic cylinder and second group of hydraulic cylinder number, by being opened and closed valve from the S in first group of hydraulic cylinderA1,SA2,
SA3,...,SAmSelected section hydraulic pressure area connects the first source of potential energy, the S from first group of hydraulic cylinderB1,SB2,SB3,...,SBnChoosing
It selects section hydraulic area and connects the second source of potential energy, the two combination has m*n kinds, wherein P2*SBj-P1*SAiThere is k within the scope of one
Kind, i and j are belonging respectively to m and n, and wherein k is positive integer, and S is selected in this k kindAiMaximum combination, selects in these combinations
P2*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, the hydraulic servo unit is by controlling the opening and closing of the multiple valve so that produced by the second source of potential energy
Pressure subtract the driving force that expectation is obtained after the balancing force of pressure and Hydrauservo System caused by the first source of potential energy, with control
Potential energy conversion rate processed.
Particularly, first group of hydraulic cylinder includes first hydraulic cylinder and second hydraulic cylinder, the second hydraulic cylinder group bag
Include the 3rd hydraulic cylinder and the 4th hydraulic cylinder, the hydraulic pressure area ratio of the first hydraulic cylinder and second hydraulic cylinder is 1：3, the described 3rd
The hydraulic pressure area ratio of hydraulic fluid cylinder and the 4th hydraulic cylinder is 1：3.
Each both ends in the hydraulic cylinder of the multiple different cross-sectional share two groups of high pressure ports and low-pressure port, institute
It states high pressure port and is connected to pressure piping bus, the low-pressure port is connected to low pressure pipeline bus, when the hydraulic cylinder
During to piston stroke terminal, the multiple valve opening and closing so that the high pressure port and low-pressure port of the hydraulic cylinder other end are opened, former
High pressure port and low-pressure port are closed, and the piston in hydraulic cylinder is promoted to be moved to reverse stroke, reciprocating motion of the pistons is realized with this.
Therefore, self-adaptive hydraulic potential energy conversion equipment of the invention can be used for it is various need using high pressure source of potential energy will be low
The engineering ground that source of potential energy energy is pressed to improve, such as in the engineerings such as high pressure water extraction.It can quickly and easily realize high-low pressure potential energy
Between it is steady, adjustably convert.
It should be noted that the above embodiment is only the preferable embodiment of the present invention, it is impossible to is understood as to this
The limitation of invention protection domain, under the premise of without departing from present inventive concept, to any minor variations and modifications of the invention done
It all belongs to the scope of protection of the present invention.
Claims (8)
1. a kind of self-adaptive hydraulic potential energy conversion equipment, which is characterized in that the self-adaptive hydraulic potential energy conversion equipment include by
Multiple and different sectional areas hydraulic cylinder composition first group of hydraulic cylinder and second group of hydraulic cylinder, the first source of potential energy, the second source of potential energy,
The multiple valves, the piston in each hydraulic cylinder and the piston rod for connecting piston of each hydraulic cylinder are connected, wherein,
First group of hydraulic cylinder is connected to the first source of potential energy by the first valve group,
Second group of hydraulic cylinder is connected to the second source of potential energy by the second valve group,
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 is because of first group of liquid
The movement of cylinder pressure and second group of hydraulic cylinder increases potential energy,
According to the first source of potential energy and the running pressure change of the second source of potential energy, first group of hydraulic pressure is adjusted by the multiple valve
Cylinder, second group of hydraulic cylinder and area ratio, the power that two groups of source of potential energy generate on the piston rod is enable to cancel out each other to greatest extent,
Realize that energy shifts maximization between two groups of source of potential energy in piston motion；
The self-adaptive hydraulic potential energy conversion equipment further includes hydraulic mechanism control unit and operating parameter measurement adjunct unit, liquid
The speed of press mechanism control unit control piston motion and direction realize that stablizing for hydraulic mechanism is transported by providing additional energy
Go and control potential energy transfer efficiency, operating parameter measure adjunct unit by the output power to hydraulic mechanism control unit or
Pressure or water pump torque are detected, and are analyzed with reference to valve state and the speed of service, formulate correct valve switch plan
Slightly, with definite and area ratio, ensure that energy transmission efficiency between two groups of source of potential energy maximizes.
2. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 1, which is characterized in that multiple and different sectional areas
Each in hydraulic cylinder regularly belongs to first group of hydraulic cylinder or second group of hydraulic cylinder, in the first source of potential energy and the second source of potential energy
Liquid be different type liquid.
3. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 1, which is characterized in that multiple and different sectional areas
Each in hydraulic cylinder belongs to first group of hydraulic cylinder or second group of hydraulic cylinder, the first source of potential energy and the second source of potential energy with being not fixed
In liquid be same type liquid.
4. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 1, which is characterized in that first source of potential energy and
Second source of potential energy includes liquid storage container pair, and the liquid in the opposite end container of the liquid storage container pair is in different pressure,
In two groups of source of potential energy share one of opposite end container, adhere to separately in four opposite end containers of two source of potential energy there are one share.
5. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 1, which is characterized in that the self-adaptive hydraulic gesture
The opening and closing of the multiple valve that can be in conversion equipment 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,
The hydraulic pressure area of each hydraulic cylinder is S in first group of hydraulic cylinderA1,SA2,SA3,...,SAm, the liquid of each hydraulic cylinder in second group of hydraulic cylinder
Pressure surface product 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, passes through opening and closing
Multiple valves are from the S in first group of hydraulic cylinderA1,SA2,SA3,...,SAmSelected section hydraulic pressure area connects the first source of potential energy, from the
S in two groups of hydraulic cylindersB1,SB2,SB3,...,SBnSelected section hydraulic pressure area connects the second source of potential energy, and the two combination has m*n kinds,
Wherein P2*SBj-P1*SAiThere are k kinds within the scope of one, i and j are belonging respectively to m and n, and wherein k is positive integer, is selected in this k kind
Select SAiMaximum 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. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 5, which is characterized in that the hydraulic mechanism control
Unit has change to be added in the longitudinal force on piston and changes the liquid pressure of a cylinder in second group of hydraulic cylinder, flow realization liquid
Flowing control two ways, wherein,
Change the mode for being added in the longitudinal force on piston, by the realization of one of following several ways, controlled and lived by linear motor
Stopper rod is moved either by additional hydraulic control system or electric rotating machine by controlling piston after belt or gear shift
Bar moves；
Change the liquid pressure flow mode of a cylinder in second group of hydraulic cylinder, the connection of a cylinder body in second group of hydraulic cylinder
Increase a liquid pump on pipeline, increase proportioning valve and liquid using variable frequency regulating speed control hydraulic pump or in connecting pipe
Pump group is closed, and is realized proportion adjustment or is increased servo-drive system and liquid pump combination, realizes SERVO CONTROL；
The additional hydraulic control system falls pressure caused by the second source of potential energy and the first gesture by excess power output offset
The difference of pressure caused by the energy, by the way that the piston speed of service is controlled to control potential energy conversion rate.
7. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 1, which is characterized in that the multiple different cross section
Each both ends in long-pending hydraulic cylinder share two groups of high pressure ports and low-pressure port, and the high pressure port is connected to pressure piping
Bus, the low-pressure port are connected to low pressure pipeline bus, the multiple when the hydraulic cylinder to piston stroke terminal
Valve opening and closing so that the high pressure port and low-pressure port of the hydraulic cylinder other end are opened, and former high pressure port and low-pressure port are closed, and are pushed away
Piston in hydrodynamic cylinder pressure is moved to reverse stroke direction, and reciprocating motion of the pistons is realized with this.
8. according to the self-adaptive hydraulic potential energy conversion equipment described in claim 1, which is characterized in that first source of potential energy
Liquid pressure difference in two containers of liquid storage container centering allows at work constantly variation, in piston runs one stroke,
The variation of conversion power is mainly made up by the output power of hydraulic mechanism control unit caused by the pressure of variation, in one stroke
After finishing, the valve switch strategy of next stroke is determined according to last state, it is ensured that realize valve optimal under new pressure status
Door switch strategy.
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| CN107676216B (en) * | 2017-11-17 | 2019-10-11 | 华北电力大学 | Change the system and method that head adjusts the pumped storage power of the assembling unit by compressed air |
| CN108590945B (en) * | 2018-03-15 | 2020-02-21 | 华北电力大学 | System and method for regulating running power of pumping and storage unit by fixed water head |
| CN108626182B (en) * | 2018-04-16 | 2020-06-09 | 华北电力大学 | Variable-pressure self-adaptive hydraulic potential energy conversion device |
| CN108915972A (en) * | 2018-07-25 | 2018-11-30 | 中煤科工集团重庆研究院有限公司 | Two cavity pressure potential energy of plunger type exchanges recovery system and method |
| CN109764013B (en) * | 2019-01-28 | 2021-05-11 | 华北电力大学 | Hydraulic potential energy conversion device of self-synchronizing multistage hydraulic cylinder |
| CN111734571B (en) * | 2020-05-28 | 2021-12-07 | 华北电力大学 | Multi-channel hydraulic cylinder compensation control device based on virtual pumping and storage |
| CN112065648B (en) * | 2020-09-04 | 2022-06-21 | 华北电力大学 | Reversible power device based on cooperation of servo electric cylinder and hydraulic cylinder |
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