CN104989686B - Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof - Google Patents

Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof Download PDF

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Publication number
CN104989686B
CN104989686B CN201510400282.9A CN201510400282A CN104989686B CN 104989686 B CN104989686 B CN 104989686B CN 201510400282 A CN201510400282 A CN 201510400282A CN 104989686 B CN104989686 B CN 104989686B
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CN
China
Prior art keywords
hydraulic
hydraulic press
fluid power
power system
piston cylinder
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201510400282.9A
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Chinese (zh)
Other versions
CN104989686A (en
Inventor
刘志峰
李磊
王勇
李新宇
高梦迪
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Hefei University of Technology
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Hefei University of Technology
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Priority to CN201510400282.9A priority Critical patent/CN104989686B/en
Priority to CN201610972704.4A priority patent/CN106321535B/en
Publication of CN104989686A publication Critical patent/CN104989686A/en
Application granted granted Critical
Publication of CN104989686B publication Critical patent/CN104989686B/en
Expired - Fee Related legal-status Critical Current
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F15B13/06Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/14Energy-recuperation means
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/71Multiple output members, e.g. multiple hydraulic motors or cylinders
    • F15B2211/7142Multiple output members, e.g. multiple hydraulic motors or cylinders the output members being arranged in multiple groups
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00Circuits for servomotor systems
    • F15B2211/70Output members, e.g. hydraulic motors or cylinders or control therefor
    • F15B2211/78Control of multiple output members

Abstract

The invention discloses a hydraulic unit achieving mutual potential energy utilization in a pairing manner and a driving manner thereof. The hydraulic unit at least comprises two hydraulic machines which are the first hydraulic machine and the second hydraulic machine. A potential energy balance system and a hydraulic drive system are arranged between the two hydraulic machines. When the first hydraulic machine conducts a fast drop action, a fast return action of the second hydraulic machine is achieved; when the second hydraulic machine conducts a fast drop action, a fast return action of the first hydraulic machine is achieved. The storage and supplementation functions of the potential energy balance system are used for enabling the hydraulic machines conducting the fast return action to acquire the matched hydraulic oil amount. Through real-time mutual utilization of potential energy of the hydraulic machines, an energy conversion link is omitted, and the work efficiency of a hydraulic system is improved.

Description

With group, form realized hydraulic pressure unit and the driving method thereof that potential energy mutually utilizes
Technical field
The present invention relates to the driving method of a kind of hydraulic press, particularly to a kind of, with group, form is realized the hydraulic pressure that potential energy mutually utilizes Unit and type of drive thereof, for realizing the mutual utilization of potential energy between multiple stage hydraulic press, energy-saving and cost-reducing.
Background technology
Along with industrial developing rapidly in global range, energy shortage and problem of environmental pollution are on the rise, with low energy consumption, low dirt " low-carbon economy " based on dye has become as the focus of global concern.Wherein hydroforming equipment is owing to its consumption is big, energy consumption Height, efficiency are low, and efficiency is generally 6% to 40%, has been increasingly becoming one of main object of people's common concern.
During hydraulic press work, the quality weight of slide block, inertia are big, and slide block relies on action of gravity and the oil-out choke valve of himself Regulation, rapid decrease.In decentralization process, gravitional force and the most restriction at valve of kinetic energy are converted into thermal dissipation and arrive In air.And hydraulic press work is frequently, not only causes substantial amounts of energy dissipation, and add the carbon emission of system, and send out Exhibition low-carbon economy is runed counter to.
For this situation, Chinese scholars proposes the method that various hydraulic press potential energy recycles.Reclaiming is exactly by hydraulic press Declining potential energy converting and energy becomes the energy storage being prone to storage in energy-storage travelling wave tube, discharges recycling the most according to the actual needs. According to the difference of energy storage mode, it is generally divided into Electric energy type, mechanical energy formula and hydraulic energy formula.Focus primarily upon electric power type energy regenerating The exploitation of system and the utilization of hydraulic secondary component, in electric power type Energy Recovery Technology, due to energy convert experienced by electromotor, Multiple links such as electronic/electromotor, energy-storage travelling wave tube (battery or super capacitor) and hydraulic pump, it is inefficient that energy is changed.
Although the above method can reach the effect of energy recovery and reuse, but is the increase in the burden of system and answering of control Polygamy, adds the link of recycling and reuse simultaneously, reduces the efficiency of Energy harvesting.
Summary of the invention
The present invention is for avoiding the weak point existing for above-mentioned prior art, it is provided that it is mutually mutually beneficial that one realizes potential energy with group to form Hydraulic pressure unit and driving method, by utilizing in real time mutually hydraulic press potential energy, reduce the link of energy conversion, carry The work efficiency of high hydraulic system.
The present invention solves that technical problem adopts the following technical scheme that
The present invention realizes being structurally characterized in that of hydraulic pressure unit that potential energy mutually utilizes with group to form: described hydraulic pressure unit at least includes Two groups of hydraulic presses, are the first hydraulic press and the second hydraulic press respectively;And potential-energy balance system and liquid are set between two groups of hydraulic presses Pressure drive system;
The hydraulic cylinder of described first hydraulic press is made up of first piston cylinder and the first plunger case, the piston rod of described first piston cylinder and The plunger rod of the first plunger case is connected with the first slider of hydraulic press jointly;First piston cylinder cavity of resorption by oil circuit respectively with described gesture System can be balanced and fluid power system is connected;First piston cylinder epicoele one tunnel is to be communicated by the first replenishing valve and the first fuel tank, Another road is to be connected with described fluid power system by the first check valve;The hydraulic control mouth of described first replenishing valve and described hydraulic pressure Drive system is connected;The conducting direction of described first check valve is to described first hydraulic press by described fluid power system;Institute State the first plunger case to be connected with described fluid power system;
The hydraulic cylinder of described second hydraulic press is made up of the second piston cylinder and the second plunger case, the piston rod of described second piston cylinder and The plunger rod of the second plunger case is connected with the second slider of hydraulic press jointly;Second piston cylinder cavity of resorption by oil circuit respectively with described gesture System can be balanced and fluid power system is connected;Second piston cylinder epicoele one tunnel is to be communicated by the second replenishing valve and the second fuel tank, Another road is to be connected with described fluid power system by the second check valve;The hydraulic control mouth of described second replenishing valve drives with described hydraulic pressure Dynamic system is connected;The conducting direction of described second check valve is to described second hydraulic press by described fluid power system;Described Second plunger case is connected with described fluid power system.
The feature of the driving method that the present invention realizes the hydraulic pressure unit that potential energy mutually utilizes with group to form is:
When the first hydraulic press is in fast fall action, described fluid power system the plunger rod driving described first plunger case is quick Decline, drive the piston rod rapid decrease of described first slider of hydraulic press and first piston cylinder, discharge with first piston cylinder cavity of resorption Hydraulic oil, through described potential-energy balance system introducing the second piston cylinder cavity of resorption, promotes described second hydraulic press to realize returning to action with this;
When the second hydraulic press is in fast fall action, described fluid power system the plunger rod driving described second plunger case is quick Decline, drive the piston rod rapid decrease of described second slider of hydraulic press and the second piston cylinder, discharge with the second piston cylinder cavity of resorption Hydraulic oil, through described potential-energy balance system introducing first piston cylinder cavity of resorption, promotes described first hydraulic press to realize returning to action with this;
The storage and the supplementary functions that utilize described potential-energy balance system make the hydraulic press being under fast fall action obtain the hydraulic pressure matched Oil oil mass.
The feature of the driving method that the present invention realizes the hydraulic pressure unit that potential energy mutually utilizes with group to form lies also in: when described first After hydraulic press and described second hydraulic press complete to drop soon and return to action, close described potential-energy balance system;Described first hydraulic press With the second hydraulic press under the driving of fluid power system, separate complete in technological requirement compacting, off-load, pressurize and slow Return each action.
Compared with the prior art, the present invention has the beneficial effect that:
1, hydraulic press is grouping by the present invention so that it is the potential energy that middle hydraulic press drops soon is for the rapid increase of other hydraulic press, real The trend of the times can directly mutually utilize, the less conversion links of potential energy, decrease energy loss, improve the efficiency of hydraulic system.
2, the present invention is by arranging plunger case for hydraulic press, by the rapid decrease of the flow input tape hydrodynamic press slide of plunger case. When not against slide block gravity, less flow input can realize the rapid decrease of hydraulic press, reduces the installation of drive system Power, decreases the energy loss because using choke valve to produce, reduces the carbon emission of system.
3, the present invention group to hydraulic press in compacting action time, by potential-energy balance system close, separate unit hydraulic press complete independently move Make, reduce the installed power that fluid power system is total, reduce the energy expenditure that hydraulic system drive part produces because of off-load.
Accompanying drawing explanation
Fig. 1 is hydraulic pressure unit structural representation of the present invention;
Label in figure: 1 first hydraulic press, 2 second hydraulic presses, 11 first piston cylinders, 12 first plunger cases, 13 first hydraulic pressure Machine slide block, 14 first replenishing valves, 15 first fuel tanks, 16 first check valves, 21 second piston cylinders, 22 second plunger cases, 23 Second slider of hydraulic press, 24 second replenishing valves, 25 second fuel tanks, 26 second check valves.
Detailed description of the invention
Seeing Fig. 1, form is realized in the hydraulic pressure unit that potential energy mutually utilizes by the present embodiment with group, and hydraulic pressure unit at least includes two Group hydraulic press, is the first hydraulic press 1 and the second hydraulic press 2 respectively;And arrange between two groups of hydraulic presses potential-energy balance system and Fluid power system.
As it is shown in figure 1, the hydraulic cylinder of the first hydraulic press 1 is made up of first piston cylinder 11 and the first plunger case 12, described first The piston rod of piston cylinder 11 and the plunger rod of the first plunger case 12 are connected with the first slider of hydraulic press 13 jointly;First piston cylinder Cavity of resorption is connected with described potential-energy balance system and fluid power system respectively by oil circuit;First piston cylinder epicoele one tunnel is to pass through First replenishing valve 14 communicates with the first fuel tank 15, and another road is to be connected with described fluid power system by the first check valve 16; The hydraulic control mouth of described first replenishing valve 14 is connected with described fluid power system;The conducting direction of described first check valve 16 is By described fluid power system to described first hydraulic press 1;Described first plunger case 12 is connected with described fluid power system;
As it is shown in figure 1, the hydraulic cylinder of the second hydraulic press 2 is made up of the second piston cylinder 21 and the second plunger case 22, described second The piston rod of piston cylinder 21 and the plunger rod of the second plunger case 22 are connected with the second slider of hydraulic press 23 jointly;Second piston cylinder Cavity of resorption is connected with described potential-energy balance system and fluid power system respectively by oil circuit;Second piston cylinder epicoele one tunnel is to pass through Second replenishing valve 24 communicates with the second fuel tank 25, and another road is to be connected with described fluid power system by the second check valve 26; The hydraulic control mouth of described second replenishing valve 24 is connected with described fluid power system;The conducting direction of described second check valve 26 is By described fluid power system to described second hydraulic press 2;Described second plunger case 22 is connected with described fluid power system.
With group, form realizing the type of drive of the hydraulic pressure unit that potential energy mutually utilizes in the present embodiment is:
When the first hydraulic press 1 is in fast fall action, described fluid power system drive the plunger rod of described first plunger case 12 Rapid decrease, drives described first slider of hydraulic press 13 and the piston rod rapid decrease of first piston cylinder 12, now, utilizes The negative pressure formed in first piston cylinder epicoele opens the first replenishing valve 14, makes the fluid in the first fuel tank 15 inject first piston cylinder Epicoele, the hydraulic oil discharged with first piston cylinder cavity of resorption through described potential-energy balance system introducing the second piston cylinder cavity of resorption, drives described The piston rod rapid increase of the second piston cylinder, and promote the second press slide 23 rapid increase, promote the second hydraulic press to realize with this Return to action.Meanwhile, the hydraulic control mouth pressure of the second replenishing valve 24 raises, and the second replenishing valve 24 is opened, the second piston cylinder The hydraulic oil of epicoele flows back into the second fuel tank 25 through replenishing valve 24.
When the second hydraulic press 2 is in fast fall action, described fluid power system drive the plunger rod of described second plunger case 22 Rapid decrease, drives described second slider of hydraulic press 23 and the piston rod rapid decrease of the second piston cylinder 21, now, utilizes The negative pressure formed in second piston cylinder epicoele opens the second replenishing valve 24, and hydraulic oil flows into described second through described second fuel tank 25 Piston cylinder epicoele;The hydraulic oil discharged with the second piston cylinder cavity of resorption through described potential-energy balance system introducing first piston cylinder cavity of resorption, band The piston rod rapid increase of dynamic first piston cylinder, and promote described first press slide 13 rapid increase, promote described first with this Hydraulic press realizes returning to action.Meanwhile, the hydraulic control mouth pressure of the first replenishing valve 14 raises, and the first replenishing valve 14 is opened, The hydraulic oil of first piston cylinder epicoele flows back into the first fuel tank 15 through the first replenishing valve 14.
First replenishing valve 14 and the second replenishing valve 24 are hydraulic control one-way valve, when the pressure of its hydraulic control mouth is more than unlatching pressure, i.e. In two-way admittance state.
In the present embodiment, hydraulic pressure unit is to be grouping with two hydraulic presses, under the driving of fluid power system, for first Be on centre position first piston cylinder 11 and office the first plunger in the first piston cylinder left and right sides in hydraulic press 1 Total cross-sectional area of cylinder 12 should meet the demand of hydraulic press maximum plastic force.Under the traffic driven of fluid power system, two The setting of total cross-sectional area of the first plunger case 12 is that the speed requirement meeting hydraulic press rapid decrease is as the criterion;For the second liquid Second piston cylinder 21 and two the second plunger cases 22 in press 2 are also same requirement.
The storage and the supplementary functions that utilize potential-energy balance system make to be in the hydraulic press returned under action and obtain the liquid matched with action Force feed oil mass.Namely: when the flow of the hydraulic press being in fast fall action is more than being in the hydraulic press demand that returns in action During flow, potential-energy balance system is memory function, otherwise is to be provided for the hydraulic press returning in action by described fluid power system Supplement energy.
After described first hydraulic press 1 completes to drop soon and return to action with described second hydraulic press 2, close described potential-energy balance system System;Described first hydraulic press 1 and the second hydraulic press 2, under the driving of fluid power system, separate complete in technological requirement Compacting, off-load, pressurize and slow return each action.
The present invention realizes, to form, the hydraulic pressure unit that potential energy mutually utilizes with group, and its hydraulic pressure unit at least includes two groups of hydraulic presses, right The multiple stage hydraulic press adapted in action beat can realize potential energy utilization each other in the same way.

Claims (1)

1. with group, form is realized the hydraulic pressure unit that potential energy mutually utilizes, it is characterized in that described hydraulic pressure unit at least includes two groups of hydraulic pressure Machine, is the first hydraulic press (1) and the second hydraulic press (2) respectively;And potential-energy balance system is set between two groups of hydraulic presses and hydraulic pressure drives Dynamic system;
The hydraulic cylinder of described first hydraulic press (1) is made up of first piston cylinder (11) and the first plunger case (12), described first piston cylinder (11) piston rod and the plunger rod of the first plunger case (12) are connected with the first slider of hydraulic press (13) jointly;First piston cylinder cavity of resorption It is connected with described potential-energy balance system and fluid power system respectively by oil circuit;First piston cylinder epicoele one tunnel is by first Replenishing valve (14) communicates with the first fuel tank (15), and another road is to be connected with described fluid power system by the first check valve (16); The hydraulic control mouth of described first replenishing valve (14) is connected with described fluid power system;The conducting direction of described first check valve (16) is By described fluid power system to described first hydraulic press (1);Described first plunger case (12) is connected with described fluid power system;
The hydraulic cylinder of described second hydraulic press (2) is made up of the second piston cylinder (21) and the second plunger case (22), described second piston cylinder (21) piston rod and the plunger rod of the second plunger case (22) are connected with the second slider of hydraulic press (23) jointly;Second piston cylinder cavity of resorption It is connected with described potential-energy balance system and fluid power system respectively by oil circuit;Second piston cylinder epicoele one tunnel is by second Replenishing valve (24) communicates with the second fuel tank (25), and another road is to be connected with described fluid power system by the second check valve (26);Institute The hydraulic control mouth stating the second replenishing valve (24) is connected with described fluid power system;The conducting direction of described second check valve (26) be by Described fluid power system is to described second hydraulic press (2);Described second plunger case (22) is connected with described fluid power system;
Arranging the described driving method that form realizes the hydraulic pressure unit that potential energy mutually utilizes with group is:
When the first hydraulic press (1) is in fast fall action, described fluid power system drive the plunger of described first plunger case (12) Bar rapid decrease, drives described first slider of hydraulic press (13) and the piston rod rapid decrease of first piston cylinder (11), from first piston The hydraulic oil that cylinder cavity of resorption is discharged, through described potential-energy balance system introducing the second piston cylinder cavity of resorption, promotes described second hydraulic press (2) with this Realization returns to action;
When the second hydraulic press (2) is in fast fall action, described fluid power system drive the plunger of described second plunger case (22) Bar rapid decrease, drives described second slider of hydraulic press (23) and the piston rod rapid decrease of the second piston cylinder (21), from the second piston The hydraulic oil that cylinder cavity of resorption is discharged, through described potential-energy balance system introducing first piston cylinder cavity of resorption, promotes described first hydraulic press (1) with this Realization returns to action;
The storage and the supplementary functions that utilize described potential-energy balance system make the hydraulic press being under fast fall action obtain the hydraulic pressure matched Oil oil mass.
CN201510400282.9A 2015-07-08 2015-07-08 Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof Expired - Fee Related CN104989686B (en)

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CN201510400282.9A CN104989686B (en) 2015-07-08 2015-07-08 Hydraulic unit achieving mutual potential energy utilization in pairing manner and driving method thereof
CN201610972704.4A CN106321535B (en) 2015-07-08 2015-07-08 The hydraulic pressure unit that potential energy is mutually utilized is realized to form with group

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CN106553370B (en) * 2016-11-30 2018-01-19 合肥工业大学 A kind of double execution unit hydraulic presses

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WO1993019866A1 (en) * 1992-03-27 1993-10-14 Mannesmann Rexroth Gmbh Hydraulic drive for a press, in particular a sheet-shaping press
DE4218952B4 (en) * 1992-06-10 2005-03-03 Bosch Rexroth Ag Hydraulic drive for a press, in particular for a sheet metal forming press
CN2632368Y (en) * 2003-07-10 2004-08-11 天津市天锻压力机有限公司 Precision numerical control stretching hydropress shaping correcting controller
CN101307685A (en) * 2008-07-09 2008-11-19 丁长良 Long stroke hydraulic pumping unit
CN102235159A (en) * 2010-04-28 2011-11-09 陈万仁 Hydraulic energy-saving multi-well pumping unit
CN102363375A (en) * 2011-06-30 2012-02-29 天津市天锻压力机有限公司 Fast energy-saving single-action hydraulic machine

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CN106321535B (en) 2017-11-07
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