CN105822486B - Energy storage system and power plant - Google Patents
Energy storage system and power plant Download PDFInfo
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- CN105822486B CN105822486B CN201610341820.6A CN201610341820A CN105822486B CN 105822486 B CN105822486 B CN 105822486B CN 201610341820 A CN201610341820 A CN 201610341820A CN 105822486 B CN105822486 B CN 105822486B
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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
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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Abstract
The invention discloses a kind of energy storage systems, including supercharging device, energy-storage units, pressure energy converting unit and the first power generator；It when storing energy, is stored in energy-storage units by the pressure energy that supercharging device converts mechanical energy into liquid, when releasing energy, the pressure energy of liquid is converted into mechanical energy by pressure energy converting unit, and then drives generator work.Compared with existing energy storage mode, the present invention has outstanding advantages of energy conversion efficiency is high, low in cost, environmentally friendly, pollution-free.On this basis, the present invention proposes a kind of power plant with the energy storage system.
Description
Technical field
The present invention relates to Technology of Electrical Power Generation, and in particular to a kind of energy storage system and power plant.
Background technique
For a long time, to meet ever-increasing electrical load requirements, power construction department has to according to peak load
It is required that all kinds of power generating equipments of construction.Constantly Large scale construction power generating equipment, power construction department bring great difficulty, and
During electricity consumption ebb, the far super actual demand of electric energy caused by these power generating equipments results in huge waste.
In order to reduce waste, usually extra power storage is got up, common energy storage mode has batteries to store energy, draws water
Energy storage and three kinds of water electrolysis hydrogen production；However there is major defect in these three energy storage modes, it is specific as follows：
1) batteries to store energy is to convert electrical energy into chemical energy by the chemical reaction of internal storage battery to store, so
And the charge and discharge number of battery is limited, service life is shorter, and operation and maintenance is at high cost.
2) energy storage of drawing water is that the water of lower position is evacuated in the reservoir of higher position by water pump, is converted electrical energy into
The potential energy storage of water gets up, and this energy storage mode is needed in the more apparent biggish water storage of position construction scale near water of difference in height
Pond, and when releasing energy, needing to rely on hydro-electric power generating equipment could be electric energy by the potential energy of water；Therefore, it draws water energy storage pair
Place and equipment requirement are relatively high, and investment and construction period are long, are limited obviously by geographical conditions.
3) water electrolysis hydrogen production is to split water into hydrogen and oxygen by electric energy, converts electrical energy into chemical energy and is stored in hydrogen
In gas, when releasing energy, hydrogen burns in steam power plant and then chemical energy is converted to electric energy；Since hydrogen is a kind of
The condition of storage of flammable explosive gas, hydrogen is harsher, and therefore, the construction of storage facility and maintenance cost are higher.
To sum up, for power generation field, how to guarantee electric energy storage and release processing efficient, it is safe and it is low at
This, is still a more intractable technical problem.
Summary of the invention
In view of this, the present invention proposes a kind of new energy storage system, it can efficient, peace using the energy storage system
It full storage and releases energy, and builds and use process is low in cost.On this basis, the present invention proposes a kind of with this
The power plant of energy storage system.
As in a first aspect, the present invention proposes a kind of energy storage system, supercharging device, energy-storage units, pressure are specifically included
Energy converting unit and the first power generator, the energy-storage units are provided with cavity volume, and the cavity volume is provided with gas；The increasing
Pressure device is connected with cavity volume, for being pressurized liquid and being input to the cavity volume；
The pressure energy converting unit includes driving cylinder and movement transforming device；One end of the driving cylinder and the liquid of cavity volume
The connection of body delivery outlet, the other end is connect with movement transforming device, for the pressure energy of liquid to be converted into moving along a straight line；The movement
Conversion equipment is connected with the first power generator, is converted into rotary motion for that will move along a straight line, and then drives first power generation
Device work.
Preferably, the movement transforming device includes pressurized cylinder and hydraulic motor, the piston and pressurized cylinder of the driving cylinder
Piston pass through connecting rod connect；The pressurized cylinder is connect with hydraulic motor, for being supplied to hydraulic motor after hydraulic oil pressurizes,
The hydraulic motor and the first power generator are sequentially connected.
Preferably, the energy storage system includes multiple driving cylinders and multiple pressurized cylinders, and the driving
Cylinder matches to form pressurization group with pressurized cylinder one by one, and multiple pressurization groups provide hydraulic oil to hydraulic motor.
Preferably, the energy storage system includes two driving cylinders and two pressurized cylinders, and the driving
Cylinder matches one by one with pressurized cylinder and forms the first pressurization group and the second pressurization group, and the first pressurization group and the second pressurization group are alternately given
Hydraulic motor provides hydraulic oil.
Preferably, the energy storage system further includes the first valve group, the second valve group and storage pool, the driving cylinder, increasing
Cylinder pressure includes rodless cavity；
In the first state, first valve group is defeated by the liquid of the rodless cavity of the driving cylinder of the first pressurization group and cavity volume
Outlet, and the rodless cavity of the driving cylinder of the second pressurization group is connected to storage pool；Meanwhile second valve group increases first
The rodless cavity of the pressurized cylinder of pressure group is connected to the oil inlet of hydraulic motor, and by the rodless cavity and liquid of the pressurized cylinder of the second pressurization group
The oil return opening of pressure motor is connected to；
In the second condition, first valve group is defeated by the liquid of the rodless cavity of the driving cylinder of the second pressurization group and cavity volume
Outlet, and the rodless cavity of the driving cylinder of the first pressurization group is connected to storage pool；Meanwhile second valve group increases second
The rodless cavity of the pressurized cylinder of pressure group is connected to the oil inlet of hydraulic motor, by the rodless cavity of the pressurized cylinder of the first pressurization group with it is hydraulic
The oil return opening of motor is connected to.
Preferably, the energy storage system further includes the first valve group and storage pool, and the driving cylinder is provided with rod chamber
And rodless cavity, the rod chamber of two driving cylinders are interconnected；
In the first state, first valve group is defeated by the liquid of the rodless cavity of the driving cylinder of the first pressurization group and cavity volume
Outlet, and the rodless cavity of the driving cylinder of the second pressurization group is connected to storage pool；
In the second condition, first valve group is defeated by the liquid of the rodless cavity of the driving cylinder of the second pressurization group and cavity volume
Outlet, and the rodless cavity of the driving cylinder of the first pressurization group is connected to storage pool.
Preferably, the energy storage system further includes the second valve group, and the pressurized cylinder is provided with rodless cavity；
In the first state, second valve group is by the oil inlet of the rodless cavity and hydraulic motor of the pressurized cylinder of the first pressurization group
Mouth connection, and the rodless cavity of pressurized cylinder of the second pressurization group is connected to the oil return opening of hydraulic motor；
In the second condition, second valve group is by the oil inlet of the rodless cavity and hydraulic motor of the pressurized cylinder of the second pressurization group
Mouth connection, and the rodless cavity of pressurized cylinder of the first pressurization group is connected to the oil return opening of hydraulic motor.
Preferably, the energy storage system further includes the second valve group and hydraulic oil container, and the pressurized cylinder is provided with no bar
The oil return opening of chamber, the hydraulic motor is connected to hydraulic oil container；
In the first state, second valve group is by the oil inlet of the rodless cavity and hydraulic motor of the pressurized cylinder of the first pressurization group
Mouth connection, and the rodless cavity of the pressurized cylinder of the second pressurization group is connected to hydraulic oil container；
In the second condition, second valve group is by the oil inlet of the rodless cavity and hydraulic motor of the pressurized cylinder of the second pressurization group
Mouth connection, and the rodless cavity of the pressurized cylinder of the first pressurization group is connected to hydraulic oil container.
Preferably, the movement transforming device is provided with crankshaft, and the crankshaft and the first power generator are sequentially connected；It is multiple
The driving cylinder is connect with crankshaft, for driving crankshaft to rotate.
Preferably, the phase angle between multiple driving cylinders is uniformly distributed.
Preferably, the cavity volume includes gas storage chamber and liquid storage cavity, the supercharging device and liquid storage cavity
It is connected, the liquid outlet is set on liquid storage cavity.
Preferably, the liquid is water.
Preferably, the supercharging device is centrifugal pump or plunger pump.
The present invention also proposes another energy storage system, specifically includes supercharging device, energy-storage units, pressure energy converting unit
And first power generator, the energy-storage units are provided with cavity volume, the cavity volume is provided with gas；The supercharging device and appearance
Product chamber is connected, for being pressurized liquid and being input to the cavity volume；The liquid is hydraulic oil, and the pressure energy converting unit is
Hydraulic motor, the oil inlet of the hydraulic motor are connected with the liquid outlet of cavity volume, the shaft of the hydraulic motor and the
One power generator is connected, for driving first power generator to work.
As second aspect, the present invention proposes a kind of power plant, including the second power generator, motor and above-mentioned any one
The energy storage system of item, second power generator and electronic mechatronics, the motor and supercharging device are sequentially connected.
Energy storage system proposed by the present invention includes supercharging device, energy-storage units, pressure energy converting unit and the first power generation
Device；When storing energy, it is stored in energy-storage units, is released energy by the pressure energy that supercharging device converts mechanical energy into liquid
When, the pressure energy of liquid is converted into mechanical energy by pressure energy converting unit, and then drives generator work.With existing energy storage mode phase
Than the present invention has outstanding advantages of energy conversion efficiency is high, low in cost, environmentally friendly, pollution-free.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the working principle diagram in the power plant that the specific embodiment of the invention provides；
Fig. 2 is one of the working principle diagram for the pressure energy converting unit that the specific embodiment of the invention provides；
Fig. 3 is the two of the working principle diagram for the pressure energy converting unit that the specific embodiment of the invention provides；
Fig. 4 is a kind of structural schematic diagram for movement transforming device that the specific embodiment of the invention provides.
Description of symbols：
1-supercharging device 2-energy-storage units, 3-pressure energy the 4-the first power generator of converting unit
5-storage pool the 6-the second power generator 7-motor, 21-gas storage chambers
22-31-driving cylinder of liquid storage cavity the 33-the first valve groups of 32-movement transforming device
34-the second valve group 321-pressurized cylinder, 322-hydraulic motor, 323-crankshaft
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the specific embodiment of the invention proposes a kind of power plant, which specifically includes the second power generation dress
Set 6, motor 7 and energy storage system, energy storage system specifically include supercharging device 1 (specifically can be centrifugal pump or
Plunger pump), energy-storage units 2, pressure energy converting unit 3, the first power generator 4 and storage pool 5, the second power generator 6 and motor 7
Electrical connection, motor 7 and supercharging device 1 are sequentially connected；Energy-storage units 2 are provided with gas storage chamber 21 and liquid storage cavity 22,
Gas storage chamber 21 is provided with gas；Supercharging device 1 is connected with liquid storage cavity 22, for being pressurized liquid and being input to liquid
Storage chamber 22；Pressure energy converting unit 3 includes driving cylinder 31 and movement transforming device 32, one end of driving cylinder 31 and liquid storage cavity
22 connections, the other end is connect with movement transforming device 32, for the pressure energy of liquid to be converted into moving along a straight line；Movement transforming device
32 are connected with the first power generator 4, are converted into rotary motion for that will move along a straight line, and then drive the work of the first power generator 4.
Wherein, movement transforming device 32 includes pressurized cylinder 321 and hydraulic motor 322, the piston of the piston and pressurized cylinder 321 of driving cylinder 31
It is connected by connecting rod；Pressurized cylinder 321 is connect with hydraulic motor 322, for being supplied to hydraulic motor 322 after hydraulic oil pressurizes,
Hydraulic motor 322 and the first power generator 4 are sequentially connected.
When storing energy, the electric energy that the second power generator 6 provides drives motor 7 to rotate, and then drives 1 work of supercharging device
Make, supercharging device 1 will be delivered to energy-storage units 2 after the liquid pressing in storage pool 5, with the volume of liquid in energy-storage units 2
Increase, the pressure in energy-storage units 2 also increases with it, and correspondingly, the energy of storage is also more.When releasing energy, high pressure liquid
Body drives 31 reciprocating action of driving cylinder, and driving cylinder 31 drives pressurized cylinder 321 to move back and forth, after pressurized cylinder 321 pressurizes hydraulic oil
It is supplied to hydraulic motor 322, hydraulic motor 322 is driven to work, finally, hydraulic motor 322 drives the work of the first power generator 4.
In the above-described embodiments, the quantity of driving cylinder 31 and pressurized cylinder 321, which can according to need, is arranged, driving cylinder 31
It matches to form pressurization group one by one with pressurized cylinder 321, multiple pressurization groups give hydraulic motor 322 to provide hydraulic oil together.
In preferably embodiment, the quantity of driving cylinder 31 and pressurized cylinder 321 is two, driving cylinder 31 and pressurized cylinder
321 match the first pressurization group of formation and the second pressurization group one by one, and the first pressurization group and the second pressurization group are alternately to hydraulic motor 322
Hydraulic oil is provided；In order to control the course of work, energy storage system is also configured with corresponding control valve, and specific implementation form is at least
There is following four：
1) as shown in Fig. 2, driving cylinder 31 and pressurized cylinder 321 are all that single-acting cylinder (is provided only with rodless cavity, is not provided with bar
Chamber), energy storage system is also configured with the first valve group 33 and the second valve group 34.In the first state, the first valve group 33 is by first
The rodless cavity of the driving cylinder 31 of pressurization group is connected to liquid storage cavity 22, and by the rodless cavity of the driving cylinder 31 of the second pressurization group with
Storage pool 5 is connected to；Meanwhile second valve group 34 by the oil inlet of the rodless cavity of the pressurized cylinder 321 of the first pressurization group and hydraulic motor 322
Mouth connection, and the rodless cavity of the pressurized cylinder 321 of the second pressurization group is connected to the oil return opening of hydraulic motor 322.In the second state
Under, the rodless cavity of the driving cylinder 31 of the second pressurization group is connected to by the first valve group 33 with liquid storage cavity 22, and by the first pressurization group
The rodless cavity of driving cylinder 31 be connected to storage pool 5；Meanwhile second valve group 34 by the pressurized cylinder 321 of the second pressurization group without bar
Chamber is connected to the oil inlet of hydraulic motor 322, by time of the rodless cavity of the pressurized cylinder 321 of the first pressurization group and hydraulic motor 322
Hydraulic fluid port connection.
2) as shown in figure 3, driving cylinder 31 is double acting cylinder (being provided with rod chamber and rodless cavity), two driving cylinders 31
Rod chamber is interconnected, and energy storage system is configured with the first valve group 33；In the first state, the first valve group 33 is pressurized first
The rodless cavity of driving cylinder 31 of group is connected to liquid storage cavity 22, and by the rodless cavity of the driving cylinder 31 of the second pressurization group and storage
Pond 5 is connected to.In the second condition, the first valve group 33 connects the rodless cavity of the driving cylinder 31 of the second pressurization group with liquid storage cavity 22
It is logical, and the rodless cavity of the driving cylinder 31 of the first pressurization group is connected to storage pool 5.
3) driving cylinder 31 is double acting cylinder (being provided with rod chamber and rodless cavity), and pressurized cylinder 321 is single-acting cylinder, energy
Stocking system is configured with the first valve group 33 and the second valve group 34；In the first state, the first valve group 33 is by the drive of the first pressurization group
The rodless cavity of dynamic cylinder 31 is connected to liquid storage cavity 22, and the rodless cavity of the driving cylinder 31 of the second pressurization group is connected with storage pool 5
It is logical；Meanwhile second valve group 34 rodless cavity of the pressurized cylinder 321 of first pressurization group is connected to the oil inlet of hydraulic motor 322, and
The rodless cavity of the pressurized cylinder 321 of second pressurization group is connected to the oil return opening of hydraulic motor 322.In the second condition, the first valve
The rodless cavity of the driving cylinder 31 of second pressurization group 33 is connected to by group with liquid storage cavity 22, and by the driving cylinder 31 of the first pressurization group
Rodless cavity be connected to storage pool 5；Meanwhile second valve group 34 by the rodless cavity of the pressurized cylinder 321 of the second pressurization group and hydraulic horse
Oil inlet up to 322 is connected to, and the rodless cavity of the pressurized cylinder 321 of the first pressurization group is connected to the oil return opening of hydraulic motor 322.
4) driving cylinder 31 is double acting cylinder, and pressurized cylinder 321 is single-acting cylinder, and energy storage system is configured with the first valve group
33, the second valve group 34 and hydraulic oil container, and the oil return opening of hydraulic motor 322 is connected to hydraulic oil container.In the first state, first
The rodless cavity of the driving cylinder 31 of first pressurization group is connected to by valve group 33 with liquid storage cavity 22, and by the driving cylinder of the second pressurization group
31 rodless cavity is connected to storage pool 5；Meanwhile second valve group 34 by the rodless cavity of the pressurized cylinder 321 of the first pressurization group with it is hydraulic
The oil inlet of motor 322 is connected to, and the rodless cavity of the pressurized cylinder 321 of the second pressurization group is connected to hydraulic oil container.In the second shape
Under state, the rodless cavity of the driving cylinder 31 of the second pressurization group is connected to by the first valve group 33 with liquid storage cavity 22, and first is pressurized
The rodless cavity of the driving cylinder 31 of group is connected to storage pool 5；Meanwhile second valve group 34 by the nothing of the pressurized cylinder 321 of the second pressurization group
Rod cavity is connected to the oil inlet of hydraulic motor 322, and the rodless cavity of the pressurized cylinder 321 of the first pressurization group and hydraulic oil container are connected
It is logical.
In other embodiments, movement transforming device 32 is crankshaft 323, as shown in figure 4, being provided on crankshaft 323 multiple
Crank throw, each crank throw and driving cylinder 31 are hinged, and the phase angle between multiple driving cylinders 31 is uniformly distributed, crankshaft 323 it is defeated
Outlet and the first power generator 4 are sequentially connected；Obviously, directly the linear motion of driving cylinder 31 can be converted by crankshaft 323
For rotary motion.
In the above-described embodiments, liquid of the water as energy storage is used, preferentially to reduce cost.
In other embodiments, it can use liquid of the hydraulic oil as energy storage, accordingly, make using hydraulic motor 322
For pressure energy converting unit 3, the oil inlet of hydraulic motor 322 is connected with the liquid outlet of cavity volume, the shaft of hydraulic motor 322
It is connected with the first power generator 4, for driving first power generator 4 to work.Compared with above-described embodiment, using hydraulic horse
The pressure energy of liquid is directly converted into mechanical energy up to 322, greatlies simplify system structure.
Compared with existing energy storage mode, the present invention improves energy conversion effect by the energy storage system of special construction
Rate, and there are the advantages such as low in cost, safe and environment-friendly.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (15)
1. a kind of energy storage system, which is characterized in that including supercharging device (1), energy-storage units, pressure energy converting unit (3) and
First power generator (4), the energy-storage units are provided with cavity volume, and the cavity volume is provided with gas；The supercharging device (1)
It is connected with cavity volume, for being pressurized liquid and being input to the cavity volume；
The pressure energy converting unit (3) includes driving cylinder (31) and movement transforming device (32)；One end of the driving cylinder (31)
It is connect with the liquid outlet of cavity volume, the other end is connect with movement transforming device (32), for the pressure energy of liquid to be converted into
Linear motion；The movement transforming device (32) is connected with the first power generator (4), is converted into rotation fortune for that will move along a straight line
It is dynamic, and then drive the first power generator (4) work；
The pressure energy converting unit (3) includes driving cylinder (31) and movement transforming device (32)；One end of the driving cylinder (31)
It is connect with the liquid outlet of cavity volume, the other end is connect with movement transforming device (32), for the pressure energy of liquid to be converted into
Linear motion；The movement transforming device (32) is connected with the first power generator (4), is converted into rotation fortune for that will move along a straight line
It is dynamic, and then drive the first power generator (4) work；
The movement transforming device (32) includes pressurized cylinder (321) and hydraulic motor (322), the piston of the driving cylinder (31) with
The piston of pressurized cylinder (321) is connected by connecting rod；The pressurized cylinder (321) connect with hydraulic motor (322), is used for hydraulic oil
It is supplied to after pressurization hydraulic motor (322), the hydraulic motor (322) and the first power generator (4) are sequentially connected；
There are two the driving cylinder (31) and the driving cylinder (31) are respectively provided with, and the driving cylinder (31) and pressurized cylinder (321)
Matching forms the first pressurization group and the second pressurization group one by one, and the first pressurization group and the second pressurization group are alternately to hydraulic motor
(322) hydraulic oil is provided；
The energy storage system further includes the first valve group (33) and storage pool (5), and the driving cylinder (31) is provided with rod chamber
And rodless cavity, the rod chamber of two driving cylinders (31) are interconnected；
In the first state, first valve group (33) is by the liquid of the rodless cavity of the driving cylinder (31) of the first pressurization group and cavity volume
The connection of body delivery outlet, and the rodless cavity of the driving cylinder (31) of the second pressurization group is connected to storage pool (5)；
In the second condition, first valve group (33) is by the liquid of the rodless cavity of the driving cylinder (31) of the second pressurization group and cavity volume
The connection of body delivery outlet, and the rodless cavity of the driving cylinder (31) of the first pressurization group is connected to storage pool (5).
2. energy storage system according to claim 1, which is characterized in that further include the second valve group (34), and the increasing
Cylinder pressure (321) is provided with rodless cavity；
In the first state, second valve group (34) is by the rodless cavity and hydraulic motor of the pressurized cylinder (321) of the first pressurization group
(322) oil inlet connection, and by the oil return opening of the rodless cavity of the pressurized cylinder (321) of the second pressurization group and hydraulic motor (322)
Connection；
In the second condition, second valve group (34) is by the rodless cavity and hydraulic motor of the pressurized cylinder (321) of the second pressurization group
(322) oil inlet connection, and by the oil return opening of the rodless cavity of the pressurized cylinder (321) of the first pressurization group and hydraulic motor (322)
Connection.
3. energy storage system according to claim 1, which is characterized in that further include the second valve group (34) and hydraulic oil
Case, the pressurized cylinder (321) are provided with rodless cavity, and the oil return opening of the hydraulic motor (322) is connected to hydraulic oil container；
In the first state, second valve group (34) is by the rodless cavity and hydraulic motor of the pressurized cylinder (321) of the first pressurization group
(322) oil inlet connection, and the rodless cavity of the pressurized cylinder (321) of the second pressurization group is connected to hydraulic oil container；
In the second condition, second valve group (34) is by the rodless cavity and hydraulic motor of the pressurized cylinder (321) of the second pressurization group
(322) oil inlet connection, and the rodless cavity of the pressurized cylinder (321) of the first pressurization group is connected to hydraulic oil container.
4. energy storage system according to claim 1, which is characterized in that the movement transforming device (32) is provided with song
Axis (323), the crankshaft (323) and the first power generator (4) are sequentially connected；Multiple driving cylinders (31) and crankshaft (323)
Connection, for driving crankshaft (323) to rotate.
5. energy storage system according to claim 4, which is characterized in that the phase between multiple driving cylinders (31)
Angle is uniformly distributed.
6. according to claim 1 to energy storage system described in 5 any one, which is characterized in that the cavity volume includes gas
Body storage chamber (21) and liquid storage cavity (22), the supercharging device (1) are connected with liquid storage cavity (22), the liquid output
Mouth is set on liquid storage cavity (22).
7. according to claim 1 to energy storage system described in 5 any one, which is characterized in that the liquid is water.
8. according to claim 1 to energy storage system described in 5 any one, which is characterized in that the supercharging device (1) is
Centrifugal pump or plunger pump.
9. a kind of energy storage system, which is characterized in that including supercharging device (1), energy-storage units, pressure energy converting unit (3) and
First power generator (4), the energy-storage units are provided with cavity volume, and the cavity volume is provided with gas；The supercharging device (1)
It is connected with cavity volume, for being pressurized liquid and being input to the cavity volume；
The pressure energy converting unit (3) includes driving cylinder (31) and movement transforming device (32)；One end of the driving cylinder (31)
It is connect with the liquid outlet of cavity volume, the other end is connect with movement transforming device (32), for the pressure energy of liquid to be converted into
Linear motion；The movement transforming device (32) is connected with the first power generator (4), is converted into rotation fortune for that will move along a straight line
It is dynamic, and then drive the first power generator (4) work；
The movement transforming device (32) includes pressurized cylinder (321) and hydraulic motor (322), the piston of the driving cylinder (31) with
The piston of pressurized cylinder (321) is connected by connecting rod；The pressurized cylinder (321) connect with hydraulic motor (322), is used for hydraulic oil
It is supplied to after pressurization hydraulic motor (322), the hydraulic motor (322) and the first power generator (4) are sequentially connected；
There are two the driving cylinder (31) and the driving cylinder (31) are respectively provided with, and the driving cylinder (31) and pressurized cylinder (321)
Matching forms the first pressurization group and the second pressurization group one by one, and the first pressurization group and the second pressurization group are alternately to hydraulic motor
(322) hydraulic oil is provided；
The energy storage system further includes the first valve group (33), the second valve group (34) and storage pool (5), the driving cylinder
(31), pressurized cylinder (321) includes rodless cavity；
In the first state, first valve group (33) is by the liquid of the rodless cavity of the driving cylinder (31) of the first pressurization group and cavity volume
The connection of body delivery outlet, and the rodless cavity of the driving cylinder (31) of the second pressurization group is connected to storage pool (5)；Meanwhile described second
The rodless cavity of the pressurized cylinder (321) of first pressurization group is connected to by valve group (34) with the oil inlet of hydraulic motor (322), and by second
The rodless cavity of the pressurized cylinder (321) of pressurization group is connected to the oil return opening of hydraulic motor (322)；
In the second condition, first valve group (33) is by the liquid of the rodless cavity of the driving cylinder (31) of the second pressurization group and cavity volume
The connection of body delivery outlet, and the rodless cavity of the driving cylinder (31) of the first pressurization group is connected to storage pool (5)；Meanwhile described second
The rodless cavity of the pressurized cylinder (321) of second pressurization group is connected to by valve group (34) with the oil inlet of hydraulic motor (322), and first is increased
The rodless cavity of the pressurized cylinder (321) of pressure group is connected to the oil return opening of hydraulic motor (322).
10. energy storage system according to claim 9, which is characterized in that the movement transforming device (32) is provided with
Crankshaft (323), the crankshaft (323) and the first power generator (4) are sequentially connected；Multiple driving cylinders (31) and crankshaft
(323) it connects, for driving crankshaft (323) to rotate.
11. energy storage system according to claim 10, which is characterized in that the phase between multiple driving cylinders (31)
Parallactic angle is uniformly distributed.
12. according to energy storage system described in claim 9 to 11 any one, which is characterized in that the cavity volume includes
Gas storage chamber (21) and liquid storage cavity (22), the supercharging device (1) are connected with liquid storage cavity (22), and the liquid is defeated
Outlet is set on liquid storage cavity (22).
13. according to energy storage system described in claim 9 to 11 any one, which is characterized in that the liquid is water.
14. according to energy storage system described in claim 9 to 11 any one, which is characterized in that the supercharging device (1)
For centrifugal pump or plunger pump.
15. a kind of power plant, which is characterized in that any including the second power generator (6), motor (7) and claim 1 to 14
Energy storage system described in one, second power generator (6) are electrically connected with motor (7), the motor (7) and increasing
Pressure device (1) transmission connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610341820.6A CN105822486B (en) | 2016-05-20 | 2016-05-20 | Energy storage system and power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610341820.6A CN105822486B (en) | 2016-05-20 | 2016-05-20 | Energy storage system and power plant |
Publications (2)
| Publication Number | Publication Date |
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| CN105822486A CN105822486A (en) | 2016-08-03 |
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| CN101718145B (en) * | 2009-12-11 | 2011-08-17 | 三一重工股份有限公司 | Energy recovery vibration attenuating system for cantilever frame as well as energy recovery method and vibration attenuating method for cantilever frame |
| DE102011108253A1 (en) * | 2011-07-22 | 2013-01-24 | Rheinisch-Westfälische Technische Hochschule Aachen | Method for recovering energy from hydraulic system using hydraulic load, involves switching working chambers in optional manner, particularly by switchable proportional valve to carry out loading and unloading operations in pressure source |
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Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee after: Sany Heavy Energy Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee before: SANY HEAVY ENERGY Co.,Ltd. Address after: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee after: SANY HEAVY ENERGY Co.,Ltd. Address before: 102206 31 Industrial Park, North Qing Road, Beijing, Changping District Patentee before: SANY HEAVY ENERGY EQUIPMENT Co.,Ltd. |