CN101782085A - Method for storing and releasing hydraulic energy and gas, water and oil storage device applying same - Google Patents

Method for storing and releasing hydraulic energy and gas, water and oil storage device applying same Download PDF

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Publication number
CN101782085A
CN101782085A CN200910249005A CN200910249005A CN101782085A CN 101782085 A CN101782085 A CN 101782085A CN 200910249005 A CN200910249005 A CN 200910249005A CN 200910249005 A CN200910249005 A CN 200910249005A CN 101782085 A CN101782085 A CN 101782085A
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CN
China
Prior art keywords
water
oil
cylinder
hydraulic
energy
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Pending
Application number
CN200910249005A
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Chinese (zh)
Inventor
张景胜
陈举庆
宋清玉
吴生富
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China First Heavy Industries Co Ltd
CFHI Dalian Design and Research Institute Co Ltd
Original Assignee
China First Heavy Industries Co Ltd
CFHI Dalian Design and Research Institute Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China First Heavy Industries Co Ltd, CFHI Dalian Design and Research Institute Co Ltd filed Critical China First Heavy Industries Co Ltd
Priority to CN200910249005A priority Critical patent/CN101782085A/en
Publication of CN101782085A publication Critical patent/CN101782085A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F9/00Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20Drives; Control devices
    • E02F9/22Hydraulic or pneumatic drives
    • E02F9/2217Hydraulic or pneumatic drives with energy recovery arrangements, e.g. using accumulators, flywheels

Abstract

The invention belongs to hydraulic equipment and in particular relates to a method for storing and releasing hydraulic energy and a gas, water and oil storage device applying the same. The device has reasonable design and compact structure, not only can replace the functions of the traditional energy storages, more importantly solves the problem that the traditional energy storages have large volume and can not be popularized and applied, thus pumps can only be adopted to directly supply oil. By adopting the large noncontinuously acting hydraulic system employing the gas, water and oil storage device in the invention and pumps to supply oil, the quantity of the pump and the total installed power of the pump motors can be greatly reduced, thus reducing the energy consumption and improving the overall efficiency of the system. Meanwhile, the possibility that the gas directly enters into the working medium does not exist. Therefore, the invention can produce obvious economic and social benefits and has the advantages of safe operation, quite convenient use and the like.

Description

The energy storage apparatus of the storage of hydraulic energy, method for releasing and gas thereof, water and oil
Technical field
The invention belongs to hydraulic equipment; Be particularly related to the energy storage apparatus of storage, method for releasing and gas thereof, water and the oil of a kind of hydraulic energy in the hydraulic system of the Pressesforging that is applicable to large-scale discontinuity action hydraulic machinery equipment, extrusion press, stretcher etc.
Background technique
At present, large-scale discontinuity action hydraulic machinery equipment, in the hydraulic system such as Pressesforging, extrusion press, stretcher etc., traditional system's fuel system has following three kinds:
1, adopts enough pumps, make pump duty satisfy system's maximum instantaneous fuel delivery, this mode pump and pump motor are all very big, though the energy consumption of pump motor when zero load has only the 10-20% of power of motor, but owing to account for the 70-95% of total action cycle idle time, in addition higher, system's no-load power consumption is increased, system effectiveness reduces, and energy waste is serious.
2, adopt pump to add the accumulator scheme, wherein accumulator is traditional leather bag accumulator or piston accumulator.But because the leather bag accumulator can not be done greatly, can only accelerate, make system cost raise, many owing to accumulator quantity simultaneously, interface is many, and leak source is checked in inconvenience during gas leakage, also inconvenience inflation and maintenance.And the piston accumulator is direct isolated high-voltage gas and hydraulic oil, and not only the motive sealing between pressurized gas and the hydraulic oil requires static seal high, piston accumulator air cavity to require also very high, especially more difficult for large-sized sealing.This just makes the piston accumulator have the cost height, big shortcoming is not easy to do.
3, the gas-liquid jar that adopts pump+gas-liquid contact is as accumulator, but medium is a high water base medium, as water glycol etc.The cost of the relative accumulator of this scheme gas-liquid jar is low, but high water based systems overall cost height, pressure is low.As not being to be used in fire-proof and explosion-proof special occasion, do not use.This scheme can not be a medium with hydraulic oil, enters in the hydraulic oil otherwise gas can dissolve, sneak into bubble, can have a strong impact on performance and component life.
More than three kinds of schemes, first kind of scheme is main at present the employing, second kind of scheme only at the accumulator total measurement (volume) less than 2m 3Shi Caiyong just has rational cost performance, and the third scheme is only in application of special occasions.In sum, in the hydraulic system of present large-scale discontinuity large hydraulic machinery equipment, first kind of scheme of the most employings of system's fuel system.First kind of scheme efficient is low in order to solve, the narrow limitation of second and third kind scheme, and at the shortcoming and defect part that above-mentioned technology exists, the energy storage apparatus of researching and developing a kind of storage, method for releasing and gas thereof, water and oil of new hydraulic energy is very necessary.
Summary of the invention
The present invention is intended to the shortcoming and defect part that exists in above-mentioned technology, and a kind of energy storage apparatus of storage, method for releasing and gas thereof, water and oil of hydraulic energy is provided; It is the function of alternative traditional accumulator not only, has also solved traditional accumulator volume and can't apply when too big, can only adopt the problem of the poor efficiency scheme of pump DFF Direct Fuel Feed.Air water oil among employing the present invention jointly controls the large-scale discontinuity action hydraulic system of energy storage apparatus+oil pump feed, can significantly reduce the quantity and the pump motor total installed capacity power of pump, thereby reduce energy consumption, improves system total efficiency.It does not exist gas directly to enter the possibility of working medium simultaneously.And the pump-unit expense that reduces and the air water oil of increase jointly control the energy storage apparatus appropriate litigation fees.Therefore adopt the present invention will produce remarkable economic efficiency and social benefit.
The objective of the invention is to adopt following technological scheme to realize: the storage of described hydraulic energy, method for releasing is characterized in that: by high pressure gas holder, high pressure air water pot and water oil transducer, realize storage, conversion and the release of energy; Accumulation of energy---during the energy storage, the hydraulic pressure of oil flow * oil pressure can enter the appearance oil pocket of water oil transducer, promote the water hydraulic energy that piston converts the water of water containing chamber to water flow * water pressure, high pressure water compresses pressurized gas after turnover water pipe enters the high pressure air water pot, make the interior energy of compressed pressurized gas---and pressure can increase; When energy discharged, pressurized gas expanded, and high pressure water is pressed into the water containing chamber of water oil transducer through turnover water pipe, promoted the fluid pressure energy that oil that piston will hold oil pocket converts oily flow * oil pressure to, and the fluid pressure energy is directly to hydraulic press oil supply system fuel feeding.
The intermediate medium of described water system transformation of energy, it or water or in water, add emulsified liquid or in water, add ethylene glycol or hydraulic oil.
Described oil is hydraulic oil.
A kind of storage of hydraulic energy, the gas of method for releasing, the energy storage apparatus of water and oil, comprise fuel supply line to the hydraulic press fuel feeding, it is characterized in that, its structure is by gas tank, the turnover tracheae, air hydraulic cylinder, turnover water pipe, water oil transducer and fuel supply line are formed, in gas tank, fill air, the gas tank top connects an end of turnover tracheae, the other end of turnover tracheae is connected with the top of air hydraulic cylinder, bottom dress water in the described air hydraulic cylinder, top fills air, the bottom of air hydraulic cylinder connects an end of turnover water pipe, the other end of turnover water pipe is communicated with the water containing chamber of water oil transducer bottom and joins, and the appearance oil pocket of water oil transducer internal upper part is communicated with the fuel supply line of giving the hydraulic press fuel feeding and joins.
Described water oil transducer is divided into the oily transducer of the water of being with piston rod and not with the water oil transducer of piston rod, the water oil transducer of described band piston rod is made up of cylinder body, cylinder cap, cylinder bottom, piston, piston rod and seal ring; The cylinder body top connects cylinder cap, and the bottom connects cylinder bottom, and the piston of making slide relative is housed in the cylinder; On the piston that holds the oil pocket side, connect the piston rod that outside cylinder, stretches out; Seal ring is contained in respectively in the seal groove in the surface of contact between cylinder cap, piston and the cylinder bottom; Being the appearance oil pocket that oil is housed in the cavity more than piston-top surface, is the water containing chamber that water is housed in the cavity below the piston bottom surface; Describedly do not form by cylinder body, cylinder cap, cylinder bottom, piston and seal ring with the water of piston rod oil transducer; Connect cylinder cap at the cylinder body top, the bottom connects cylinder bottom, and the piston of making slide relative is housed in the cylinder; Seal ring is contained in respectively in the seal groove in the surface of contact between cylinder cap, piston and the cylinder bottom; Being the appearance oil pocket that oil is housed in the cavity more than piston-top surface, is the water containing chamber that water is housed in the cavity below the piston bottom surface.
Principle of the present invention is described below:
Because being the air water oil that adopts gas tank, air hydraulic cylinder and water oil transducer to form, the present invention jointly controls energy storage apparatus, wherein if air hydraulic cylinder enough greatly can not wanted gas tank yet.Water oil transducer wherein is when accumulation of energy is the energy storage, and hydraulic oil promotes piston high pressure water is discharged, and high pressure water promotion piston was discharged hydraulic oil when energy discharged.Therefore, in the hydraulic system of large-scale discontinuity action hydraulic machinery equipment, replace traditional accumulation of energy mode with the present invention, i.e. the gas-liquid way of contact of the gas-liquid sealing means of the gas-liquid isolation method of bag type accumulator, piston accumulator and gas-liquid contact type accumulator.Both solve leather bag accumulator and piston accumulator and done big difficulty, solved the problem that the gas-liquid contact type accumulator is not suitable for high-pressure hydraulic again.Its application can significantly reduce the quantity and the pump motor total installed capacity power of pump, thereby reduces energy consumption, has remarkable economical and social benefit.
Combine the above technological scheme of being taked, realize purpose of the present invention.
Compared with prior art, the present invention is reasonable in design, compact structure, and it is the function of alternative traditional accumulator not only, has also solved traditional accumulator volume and can't apply when too big, can only adopt the problem of the poor efficiency scheme of pump DFF Direct Fuel Feed.Air water oil among employing the present invention jointly controls the large-scale discontinuity action hydraulic system of energy storage apparatus+oil pump feed, can significantly reduce the quantity and the pump motor total installed capacity power of pump, thereby reduce energy consumption, improves system total efficiency.It does not exist gas directly to enter the possibility of working medium simultaneously.And the pump-unit expense that reduces and the air water oil of increase jointly control the energy storage apparatus appropriate litigation fees.Therefore adopt the present invention will produce remarkable economic efficiency and social benefit and handling safety, use advantages such as very convenient.
Description of drawings
The present invention has a width of cloth accompanying drawing.Wherein:
Accompanying drawing 1 is the main TV structure schematic representation of specific embodiments of the invention.
Among the figure: 1, gas tank, 2, air, 3, the turnover tracheae, 4, air hydraulic cylinder, 5, water 6, turnover water pipe, 7, sensor, 8, cylinder body, 9, piston, 10, cylinder bottom, 11, cylinder cap 12, oil, 13, piston rod, 14, seal ring, 15, fuel supply line.
Embodiment
Shown in Figure 1 is specific embodiments of the invention, and it is the energy storage apparatus of gas, water and oil of storage, the method for releasing of the employing hydraulic energy installed in the hydraulic system of 13000 tons of oil hydraulic presses; Its structure comprises the fuel supply line 15 to the hydraulic press fuel feeding, it is characterized in that, its structure is by the gas tank 1 of high pressure, turnover tracheae 3, the air hydraulic cylinder 4 of high pressure, turnover water pipe 6, water oil transducer and fuel supply line 15 are formed, in gas tank 1, fill air, gas tank 1 top connects an end of turnover tracheae 3, the other end of turnover tracheae 3 is connected with the top of air hydraulic cylinder 4, bottom dress water 5 in the described air hydraulic cylinder 4, top fills air 2, the bottom of air hydraulic cylinder 4 connects an end of turnover water pipe 6, the other end of turnover water pipe 6 is communicated with the water containing chamber of water oil transducer bottom and joins, and the appearance oil pocket of water oil transducer internal upper part is communicated with the fuel supply line 15 of giving the hydraulic press fuel feeding and joins; Described water oil transducer is the water oil transducer that adopts the band piston rod, and it is made up of cylinder body 8, cylinder cap 11, cylinder bottom 10, piston 9, piston rod 13 and seal ring 14; And installing can be measured the sensor 7 of piston position on cylinder cap 11.Because it is the gas tank by high pressure, the air hydraulic cylinder and the water oil transducer of high pressure, realizes storage, conversion and the release of energy; Accumulation of energy---during the energy storage, the hydraulic pressure of oil flow * oil pressure can enter water oil transducer and hold oil pocket, promote the water hydraulic energy that piston converts the water of water containing chamber to water flow * water pressure, high pressure water compresses pressurized gas enter the air hydraulic cylinder of high pressure through turnover water pipe 6 after, makes the interior energy of compressed pressurized gas---and pressure can increase; When energy discharged, pressurized gas expanded, and high pressure water is pressed into the water containing chamber of water oil transducer through turnover water pipe 6, promoted the fluid pressure energy that oil that piston 9 will hold oil pocket converts oily flow * oil pressure to, and the fluid pressure energy is directly to hydraulic press oil supply system fuel feeding.After the employing, can significantly reduce the quantity and the pump motor total installed capacity power of pump, thereby reduce energy consumption.Arrow among Fig. 1 is represented system's fuel feeding direction.
The capacity of now gentle, water and oily energy storage apparatus according to the flow of average fuel delivery of hydraulic system and the required pump of peak flowmeter calculation system.During design, the total discharge of pump should be greater than system's mean flowrate, and the motor-driven volume of gas tank 1+ air hydraulic cylinder 4 is greater than hydraulic system cumulative maximum oil mass in the action cycle.
Can significantly cut down the consumption of energy in order further to illustrate in more detail after adopting the present invention, modern is preferred embodiment with 13000 tons of oil hydraulic presses of specific embodiments of the invention, calculates respectively with reference to shown in Figure 1: when the parameter comparison that adopts the present invention-gas, water and oily energy storage apparatus+oil pump feed and prior art-when using oil pump feed separately.
With 13000 tons of oil hydraulic press parameters is example, and it is as follows to simplify the back known conditions:
System acting period T=12s
The mean flowrate Q of system m=6779lpm
System peak flow Q p=25764lpm
The peak flow time T p=5.5s
1. when adopting air water oil to jointly control energy storage apparatus+oil pump feed:
Select high-pressure plunger pump
Working pressure: minimum P1=280bar, the highest P2=315bar, inflation pressure Po=260bar
Working flow Qn:690lpm
Power of motor N:400kw
Pump platform number=Qm/Qn=9.82 is designed to 10, pump total discharge 690 * 10=6900lpm>Qm
Motor total output: 10 * N=4000kw
The motor-driven volume V n=Qp of energy storage apparatus * Tp=25764 * 5.5 ÷ 60=2362L
The energy storage apparatus charging volume Vo = Vn ( ( Po P 1 ) 1 1.4 - ( Po P 2 ) 1 1.4 ) = 30864 L
Design is determined:
Water oil transducer internal diameter 1400mm, stroke 1800m,
Its motor-driven volume is π 4 1400 2 × 1800 ÷ 10 6 = 2771 L > Vn
Determine that gas tank+air hydraulic cylinder total measurement (volume) is 32000L>Vo
Selecting identical gas tank and the air hydraulic cylinder of volume, respectively is 16000L, sets charging volume retains 32000-Vo=1136L water at air hydraulic cylinder position.
2. when adopting the pump DFF Direct Fuel Feed:
Select high-pressure plunger pump
Working pressure: minimum P1=280bar, the highest P2=315bar
Working flow Qn:690lpm
Power of motor N:400kw
Pump platform number=Qp/Qn=37.3 is designed to 38
Motor total output: 38 * 400=15200kw
Above two kinds of schemes adopt air water oil to jointly control energy storage apparatus+oil pump feed and reduce power of motor 15200-4000=11200kw than the independent fuel feeding of pump as can be seen, press empty load of motor consumed power 15% and calculate, and the no-load power loss is 1680kw.By working every day 10 hours, annual work was calculated in 300 days, and annual saving electric energy is 1680kw * 10 * 300=5040000kwh.Find out that thus application of the present invention will significantly reduce system motor power, and energy-saving effect is obvious.
The above; it only is preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; all are familiar with those skilled in the art in technical scope disclosed by the invention, are equal to replacement or change and all should be encompassed within protection scope of the present invention according to technological scheme of the present invention and design of the present invention thereof.

Claims (5)

1. the storage of a hydraulic energy, method for releasing is characterized in that: by the gas tank (1) of high pressure, the air hydraulic cylinder (4) and the water oil transducer of high pressure, realize storage, conversion and the release of energy; Accumulation of energy---during the energy storage, the hydraulic pressure of oil flow * oil pressure can enter the appearance oil pocket of water oil transducer, promote the water hydraulic energy that piston converts the water of water containing chamber to water flow * water pressure, high pressure water compresses pressurized gas after turnover water pipe (6) enters the high pressure air water pot, make the interior energy of compressed pressurized gas---and pressure can increase; When energy discharged, pressurized gas expanded, and high pressure water is pressed into water oil transducer water containing chamber through turnover water pipe (6), promoted the fluid pressure energy that oil that piston will hold oil pocket converts oily flow * oil pressure to, and the fluid pressure energy is directly to hydraulic press oil supply system fuel feeding.
2. by the storage of the described hydraulic energy of claim 1, method for releasing, it is characterized in that: the intermediate medium of described water system transformation of energy, it or water or in water, add emulsified liquid or in water, add ethylene glycol or hydraulic oil.
3. by storage, the method for releasing of the described hydraulic energy of claim 1, it is characterized in that: described oil is hydraulic oil.
4. storage of adopting the hydraulic energy of claim 1, the gas of method for releasing, the energy storage apparatus of water and oil, comprise fuel supply line (15) to the hydraulic press fuel feeding, it is characterized in that, its structure is by gas tank (1), turnover tracheae (3), air hydraulic cylinder (4), turnover water pipe (6), water oil transducer and fuel supply line (13) are formed, in gas tank (1), fill air (2), gas tank (1) top connects an end of turnover tracheae (3), the other end of turnover tracheae (3) is connected with the top of air hydraulic cylinder (4), bottom dress water (5) in the described air hydraulic cylinder (4), top fills air (2), the bottom of air hydraulic cylinder (4) connects an end of turnover water pipe (6), the other end of turnover water pipe (6) is communicated with the water containing chamber of water oil transducer bottom and joins, and the appearance oil pocket of water oil transducer internal upper part is communicated with the fuel supply line (15) of giving the hydraulic press fuel feeding and joins.
5. by the described gas of claim 4, water and oily energy storage apparatus, it is characterized in that: described water oil transducer, be divided into the water oil transducer of being with piston rod and not with the water oil transducer of piston rod, the oily transducer of the water of described band piston rod is made up of cylinder body (8), cylinder cap (11), cylinder bottom (10), piston (9) piston rod (13) and seal ring (14); Cylinder body (8) top connects cylinder cap (11), and the bottom connects cylinder bottom (10), and the piston (9) of making slide relative is housed in the cylinder; On the piston (9) that holds the oil pocket side, connect the piston rod (13) that outside cylinder, stretches out; Seal ring (14) is contained in respectively in the seal groove in the surface of contact between cylinder cap (11), piston (9) and the cylinder bottom (10); The appearance oil pocket of oil (12) is equipped with in system in the cavity of piston (9) more than the end face, and the water containing chamber of water (5) is equipped with in system in the cavity of piston (9) below the bottom surface; Describedly do not form by cylinder body (8), cylinder cap (11), cylinder bottom (10), piston (9) and seal ring (14) with the water of piston rod oil transducer; Connect cylinder cap (11) at cylinder body (8) top, the bottom connects cylinder bottom (10), and the piston (9) of making slide relative is housed in the cylinder; Seal ring (14) is contained in respectively in the seal groove in the surface of contact between cylinder cap (11), piston (9) and the cylinder bottom (10); The appearance oil pocket of oil (12) is equipped with in system in the cavity of piston (9) more than the end face, and the water containing chamber of water (5) is equipped with in system in the cavity of piston (9) below the bottom surface.
CN200910249005A 2009-12-30 2009-12-30 Method for storing and releasing hydraulic energy and gas, water and oil storage device applying same Pending CN101782085A (en)

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CN200910249005A CN101782085A (en) 2009-12-30 2009-12-30 Method for storing and releasing hydraulic energy and gas, water and oil storage device applying same

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Application Number Priority Date Filing Date Title
CN200910249005A CN101782085A (en) 2009-12-30 2009-12-30 Method for storing and releasing hydraulic energy and gas, water and oil storage device applying same

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956732A (en) * 2010-11-04 2011-01-26 何学才 Gas and oil canister combined non-isolated multiple piston accumulator
CN102192202A (en) * 2011-06-21 2011-09-21 何学才 Energy accumulator station formed by welding air tank and mixing piston energy accumulator
CN102691682A (en) * 2011-03-21 2012-09-26 杨双来 Method and device for potential energy recovery and storage by utilizing deadweight of crane jib
CN102913491A (en) * 2012-10-15 2013-02-06 浙江工业大学 Quick high-pressure inflating system capable of recovering energy
CN102963026A (en) * 2012-11-16 2013-03-13 无锡阳工机械制造有限公司 Driving technology of hydraulic press pump and energy accumulator in field of ship building
CN104081047A (en) * 2012-02-02 2014-10-01 威望工程公司 An energy storage and recovery system
CN104284772A (en) * 2012-05-10 2015-01-14 迪芬巴赫机械工程有限公司 Method for operating a hydraulic press, and hydraulic press
US9638217B2 (en) 2011-03-21 2017-05-02 Shuanglai Yang Lifting system and lifting method for jib of an operating machine, and an operating machine thereof
CN106733311A (en) * 2016-12-29 2017-05-31 北京东方诚国际钢结构工程有限公司 A kind of glue spreader system and glue spreading method
CN107061378A (en) * 2011-10-10 2017-08-18 阿格斯·彼特·罗伯森 Accumulator

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB330106A (en) * 1929-05-09 1930-06-05 William Ronald Tate Method of releasing the pressure of mixtures of solids and liquids existing under high pressure
US4380150A (en) * 1979-02-22 1983-04-19 Carlson John C Pump jack assembly for wells
CN2634165Y (en) * 2003-08-12 2004-08-18 西北轴承股份有限公司 Liquid/gas energy storage device
CN2910660Y (en) * 2006-02-16 2007-06-13 蔡学功 Energy-recovery means of internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB330106A (en) * 1929-05-09 1930-06-05 William Ronald Tate Method of releasing the pressure of mixtures of solids and liquids existing under high pressure
US4380150A (en) * 1979-02-22 1983-04-19 Carlson John C Pump jack assembly for wells
CN2634165Y (en) * 2003-08-12 2004-08-18 西北轴承股份有限公司 Liquid/gas energy storage device
CN2910660Y (en) * 2006-02-16 2007-06-13 蔡学功 Energy-recovery means of internal combustion engine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101956732A (en) * 2010-11-04 2011-01-26 何学才 Gas and oil canister combined non-isolated multiple piston accumulator
CN101956732B (en) * 2010-11-04 2013-02-13 何学才 Gas and oil canister combined non-isolated multiple piston accumulator
CN102691682A (en) * 2011-03-21 2012-09-26 杨双来 Method and device for potential energy recovery and storage by utilizing deadweight of crane jib
US9638217B2 (en) 2011-03-21 2017-05-02 Shuanglai Yang Lifting system and lifting method for jib of an operating machine, and an operating machine thereof
CN102192202A (en) * 2011-06-21 2011-09-21 何学才 Energy accumulator station formed by welding air tank and mixing piston energy accumulator
CN102192202B (en) * 2011-06-21 2013-07-03 何学才 Energy accumulator station formed by welding air tank and mixing piston energy accumulator
CN107061378A (en) * 2011-10-10 2017-08-18 阿格斯·彼特·罗伯森 Accumulator
CN104081047A (en) * 2012-02-02 2014-10-01 威望工程公司 An energy storage and recovery system
CN104284772A (en) * 2012-05-10 2015-01-14 迪芬巴赫机械工程有限公司 Method for operating a hydraulic press, and hydraulic press
CN102913491A (en) * 2012-10-15 2013-02-06 浙江工业大学 Quick high-pressure inflating system capable of recovering energy
CN102963026A (en) * 2012-11-16 2013-03-13 无锡阳工机械制造有限公司 Driving technology of hydraulic press pump and energy accumulator in field of ship building
CN106733311A (en) * 2016-12-29 2017-05-31 北京东方诚国际钢结构工程有限公司 A kind of glue spreader system and glue spreading method

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