CN104047935A - Potential energy recovery system of lifting equipment and use method under non-stable load condition - Google Patents
Potential energy recovery system of lifting equipment and use method under non-stable load condition Download PDFInfo
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- CN104047935A CN104047935A CN201310082413.4A CN201310082413A CN104047935A CN 104047935 A CN104047935 A CN 104047935A CN 201310082413 A CN201310082413 A CN 201310082413A CN 104047935 A CN104047935 A CN 104047935A
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- potential energy
- accumulator
- cylinder
- energy recovery
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Abstract
The invention relates to a potential energy recovery system of lifting equipment and a use method under a non-stable load condition. An oil suction port of an oil supplementing pump is connected with an oil outlet of an oil tank, an oil outlet of the oil supplementing pump is respectively connected with an oil inlet of a one-way valve and an oil inlet of a second overflow valve, the oil outlet of the one-way valve is respectively connected with an inlet of a first electromagnetic reserving valve and an inlet of a second electromagnetic reserving valve, an outlet of the first electromagnetic reserving valve is respectively connected with an accumulator and a rodless cavity oil port of a potential energy recovery cylinder, the accumulator and the rodless cavity oil port of the potential energy recovery cylinder are communicated and are respectively connected with an oil inlet of a hydraulic control one-way valve, an outlet of the second electromagnetic reserving valve is connected with a control port of the hydraulic control one-way valve, and the oil outlet of the hydraulic control one-way valve is connected with an oil inlet of a first proportional overflow valve. The method adopts the steps of determining the carrying load of the potential energy recovery system, and the sizes of the potential energy recovery cylinder and the accumulators; enabling the potential energy recovery cylinder to assist and push the load to move upwards; enabling a pressure sensor to detect the pressure of the accumulator and the carrying load of a lifting cylinder during the lifting of equipment. The system has the advantage that one part of wasted gravity potential energy can be recovered during lifting.
Description
Technical field
The present invention relates to a kind of potential energy recovery system and using method thereof of jacking equipment, specifically potential energy recovery system and the using method thereof of jacking equipment under steady load.
Background technique
Lifting and walking machinery have accounted for very large proportion at industry-by-industry, and its major part all belongs to heavy duty, continuous production status, the most of hydraulic driving that adopts of elevating movement of these equipment, provides power by oil hydraulic cylinder during rising, during decline, by deadweight or power, adds auxiliary back pressure.The gravitational potential energy major part that equipment discharges in decline process is converted into heat and consumed in vain, and this portion of energy has accounted for 50% to 70% of total energy consumption while promoting, even higher.
Take walking beam furnace as example, and maximum load when its main drive hydraulic system principle rises according to step rate (steel billet maximum load in step rate deadweight, stove) is configured, and during rising, by lifting hydraulic cylinder, is driven, and declines by deadweight.In decline process, the gravitational potential energy of the interior steel billet of step rate and stove is substantially all converted into heat (restriction loss, frictional loss) and is consumed in vain.Meanwhile, by the main drive hydraulic system principle of maximum load configuration, the total output of its main pump motor is bigger than normal, even when zero load, these motors also can consume the electric weight of 35% left and right under working state.Except walking beam furnace, all there is identical problem in walking beam transporter, walking beam cooler, rise-fall type weighing-appliance, hydraulic lift etc.: in decline process, most of gravitational potential energy is consumed in vain, has caused the significant wastage of the energy.If the potential energy of this part can be carried out to recycling, will produce huge economic benefit and Industry Effect.
Lifting and walking machinery, except adopting hydraulic driving, also have the motor-driven form of employing, also have same problem.
Summary of the invention
The present invention is intended to overcome the defect of prior art, and potential energy recovery system and the using method thereof of a kind of jacking equipment under steady load is provided, and can successfully the part gravitational potential energy being wasted in decline process be reclaimed.
In order to solve the problems of the technologies described above, the present invention is achieved in that
The potential energy recovery system of jacking equipment under steady load, is characterized in that: it comprises that potential energy reclaims cylinder, accumulator, pressure transducer, Pilot operated check valve, slippage pump, one-way valve, fuel tank, two relief valves and two solenoid directional control valves;
The inlet port of slippage pump is connected with fuel tank oil outlet, the oil outlet of slippage pump connects respectively the filler opening of one-way valve and the filler opening of the second relief valve, the oil outlet of one-way valve connects respectively the entrance of the first solenoid directional control valve and the entrance of the second solenoid directional control valve, the outlet of the first solenoid directional control valve connects respectively the rodless cavity hydraulic fluid port of accumulator and potential energy recovery cylinder, potential energy reclaims the rod chamber hydraulic fluid port of cylinder and the first return opening of fuel tank is connected, and the return opening of the second relief valve connects the second return opening of fuel tank;
Accumulator reclaims cylinder rodless cavity hydraulic fluid port with potential energy and communicates and be all connected with the filler opening of Pilot operated check valve, the outlet of the second solenoid directional control valve connects the control mouth of Pilot operated check valve, the oil outlet of Pilot operated check valve connects the filler opening of the first relief valve, and the oil outlet of the first relief valve connects the 3rd return opening of fuel tank.
Pressure transducer is installed on accumulator and potential energy reclaims on the pipeline between cylinder rodless cavity hydraulic fluid port;
The potential energy recovery system of described jacking equipment under steady load, is characterized in that: described the first relief valve is proportional pressure control valve.
The using method of the potential energy recovery system of described jacking equipment under steady load, it comprises jacking equipment, described jacking equipment comprises luggage carrier and lifting jar, lifting jar is located at the bottom of luggage carrier, it is characterized in that, described jacking equipment also comprises that potential energy reclaims cylinder, potential energy reclaims the bottom that cylinder is located at luggage carrier, the top of luggage carrier is placed with load, and lifting jar and potential energy recovery cylinder jointly promote load by luggage carrier and do elevating movement along lifting slope, and this method comprises the steps:
A. determine the load weight that potential energy recovery system is shared
（1）
In formula (1), G
1: in load, be G
3under condition, the load weight that potential energy recovery system is shared;
G
2: the deadweight of luggage carrier;
G
3: the load weight that jacking equipment bears;
S
1: potential energy recovery system is shared the coefficient of load weight, and this coefficient value scope is between 0～1;
B. according to formula (1), draw G
1after, determine that potential energy reclaims the specification of cylinder
（2）
In formula (2): D
1: potential energy reclaims cylinder rodless cavity diameter;
N
1: potential energy reclaims cylinder quantity;
P
1: G
1the Minimum operating pressure of corresponding accumulator, its span is between 10～16MPa;
A: lifting coefficient;
C. determine the specification of accumulator
The actual volume of accumulator:
（3）
In formula (3): V
0: the actual volume of Accumulator arrangements;
L: potential energy reclaims the working stroke of cylinder;
Determine the total measurement (volume) of accumulator:
（4）
In formula (4): V
w: the total measurement (volume) of accumulator;
P
0: the inflation pressure of accumulator;
P
2: G
1the Maximum operating pressure of corresponding accumulator, its span is P
2=1.1～1.2 P
1);
K: polytropic index, normal temperature state: k=1, changeable state: k=1.4;
Determine quantity and the specification of accumulator:
（5）
In formula (5): V: the specification of selected accumulator;
N
x: the quantity of accumulator;
D. after potential energy recovery system starts, lifting jar promotes load by luggage carrier and along lifting slope, starts to rise, potential energy reclaims the synchronous auxiliary pushing of cylinder, and it rises, and the power that potential energy reclaims cylinder is provided by accumulator, once during the pressure that detects of pressure transducer lower than Minimum operating pressure P
1, the first solenoid directional control valve obtains electric, and slippage pump is to repairing in accumulator, until pressure arrives P
1after stop, guaranteeing that the pressure in accumulator is not less than P
1;
When e. jacking equipment declines, the hydraulic oil of lifting jar rodless cavity flows back to fuel tank, and potential energy reclaims cylinder rodless cavity hydraulic oil and is depressed in accumulator, and the second solenoid directional control valve obtains electric simultaneously, Pilot operated check valve is opened, when pressure transducer detects pressure higher than Maximum operating pressure P
2time, the control signal of the first relief valve start to reduce until the pressure that pressure transducer detects lower than P
2after stop;
F. in load and luggage carrier lifting process, the pressure in accumulator is all the time at P
1～P
2between change, potential energy reclaims the load weight that cylinder bears by the potential energy reclaiming and is no less than all the time G
1, the load weight G that lifting jar is born
4meet:
（6）
G. work as G
3while changing, G
1according to formula one, also synchronously change the P of corresponding accumulator
1and P
2also change, make G
1can automatically adjust according to the variation of load deadweight.
The using method of the potential energy recovery system of described jacking equipment under steady load, is characterized in that: described coefficient S
1get 0.4～0.6.
The using method of the potential energy recovery system of described jacking equipment under steady load, is characterized in that: the inflation pressure P of the accumulator in step c
0=0.8～0.9 P
1.
The invention has the beneficial effects as follows: can successfully the part gravitational potential energy being wasted in decline process be reclaimed, after transforming, all for maximum energy consumption operating mode, effectively reduce the load of main drive system, can realize saving energy 40%-60%; The effectively impact of absorption equipment in movement process, the force-bearing situation of improvement equipment improves the stability of its operation simultaneously; Reduce the one-time investment cost of driving arrangement.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is structural representation of the present invention.
Fig. 2 is the structural representation of jacking equipment.
Embodiment
As shown in Figure 1: the potential energy recovery system of a kind of jacking equipment under steady load, it comprises that potential energy reclaims cylinder 1, accumulator 2, pressure transducer 3, Pilot operated check valve 5, slippage pump 7, one-way valve 8, fuel tank 11, two 6,10 and two solenoid directional control valves 9,4 of relief valve;
The inlet port 71 of slippage pump is connected with fuel tank oil outlet 21, the oil outlet 72 of slippage pump connects respectively the filler opening 81 of one-way valve and the filler opening 101 of the second relief valve, the oil outlet 82 of one-way valve connects respectively the entrance 91 of the first solenoid directional control valve and the entrance 41 of the second solenoid directional control valve, the outlet 92 of the first solenoid directional control valve connects respectively the rodless cavity hydraulic fluid port 31 of accumulator 2 and potential energy recovery cylinder, potential energy reclaims the rod chamber hydraulic fluid port 32 of cylinder and the first return opening 22 of fuel tank is connected, and the return opening 102 of the second relief valve connects the second return opening 23 of fuel tank;
Accumulator 2 reclaims cylinder rodless cavity hydraulic fluid port 31 with potential energy and communicates and be all connected with the filler opening 51 of Pilot operated check valve, the outlet 42 of the second solenoid directional control valve connects the control mouth 53 of Pilot operated check valve, the oil outlet 62 of filler opening 61, the first proportional pressure control valves of oil outlet 52 connection first proportional pressure control valves of Pilot operated check valve connects the 3rd return opening 24 of fuel tanks.
Pressure transducer 3 is installed on accumulator 2 and potential energy reclaims on the pipeline between cylinder rodless cavity hydraulic fluid port 31;
As shown in Figure 2: the using method of the potential energy recovery system of jacking equipment under steady load, it comprises jacking equipment, described jacking equipment comprises luggage carrier 14 and lifting jar 12, lifting jar 12 is located at the bottom of luggage carrier 14, described jacking equipment also comprises that potential energy reclaims cylinder 1, potential energy reclaims the bottom that cylinder is located at luggage carrier 14, the top of luggage carrier is placed with load 13, lifting jar and potential energy recovery cylinder jointly promote load by luggage carrier and do elevating movement along lifting slope 15, and this method comprises the steps:
A. determine the load weight that potential energy recovery system is shared
（1）
In formula (1), G
1: in load, be G
3under condition, the load weight that potential energy recovery system is shared;
G
2: the deadweight of luggage carrier;
G
3: the load weight that jacking equipment bears;
S
1: potential energy recovery system is shared the coefficient of load weight, and this coefficient value scope is between 0～1;
B. according to formula (1), draw G
1after, determine that potential energy reclaims the specification of cylinder
（2）
In formula (2): D
1: potential energy reclaims cylinder rodless cavity diameter;
N
1: potential energy reclaims cylinder quantity;
P
1: G
1the Minimum operating pressure of corresponding accumulator, its span is between 10～16MPa;
A: lifting coefficient;
C. determine the specification of accumulator
The actual volume of accumulator:
（3）
In formula (3): V
0: the actual volume of Accumulator arrangements;
L: potential energy reclaims the working stroke of cylinder;
Determine the total measurement (volume) of accumulator:
（4）
In formula (4): V
w: the total measurement (volume) of accumulator;
P
0: the inflation pressure of accumulator;
P
2: G
1the Maximum operating pressure of corresponding accumulator, its span is P
2=1.1～1.2 P
1);
K: polytropic index, normal temperature state: k=1, changeable state: k=1.4;
Determine quantity and the specification of accumulator:
（5）
In formula (5): V: the specification of selected accumulator;
N
x: the quantity of accumulator;
D. after potential energy recovery system starts, lifting jar promotes load by luggage carrier and along lifting slope, starts to rise, potential energy reclaims the synchronous auxiliary pushing of cylinder, and it rises, and the power that potential energy reclaims cylinder is provided by accumulator, once during the pressure that detects of pressure transducer lower than Minimum operating pressure P
1, the first solenoid directional control valve obtains electric, and slippage pump is to repairing in accumulator, until pressure arrives P
1after stop, guaranteeing that the pressure in accumulator is not less than P
1;
When e. jacking equipment declines, the hydraulic oil of lifting jar rodless cavity flows back to fuel tank, and potential energy reclaims cylinder rodless cavity hydraulic oil and is depressed in accumulator, and the second solenoid directional control valve obtains electric simultaneously, Pilot operated check valve is opened, when pressure transducer detects pressure higher than Maximum operating pressure P
2time, the control signal of the first relief valve start to reduce until the pressure that pressure transducer detects lower than P
2after stop;
F. in load and luggage carrier lifting process, the pressure in accumulator is all the time at P
1～P
2between change, potential energy reclaims the load weight that cylinder bears by the potential energy reclaiming and is no less than all the time G
1, the load weight G that lifting jar is born
4meet:
（6）
G. work as G
3while changing, G
1according to formula one, also synchronously change the P of corresponding accumulator
1and P
2also change, make G
1can automatically adjust according to the variation of load deadweight.
4, the using method of the potential energy recovery system of jacking equipment according to claim 3 under steady load, is characterized in that: described coefficient S
1get 0.4～0.6.
5, the using method of the potential energy recovery system of jacking equipment according to claim 3 under steady load, is characterized in that: the inflation pressure P of the accumulator in step c
0=0.8～0.9 P
1.
More than the lifting jar 12 in narration can also be other pattern and the actuator with identical function, as electric pushrod, cylinder, reducing motor are joined eccentric wheel, Worm Wheel System, link transmission etc.
More than the luggage carrier 14 in narration can adopt vertical lift pattern, spiral lifting pattern etc.
Claims (5)
1. the potential energy recovery system of jacking equipment under steady load, is characterized in that: it comprises that potential energy reclaims cylinder, accumulator, pressure transducer, Pilot operated check valve, slippage pump, one-way valve, fuel tank, two relief valves and two solenoid directional control valves;
The inlet port of slippage pump is connected with fuel tank oil outlet, the oil outlet of slippage pump connects respectively the filler opening of one-way valve and the filler opening of the second relief valve, the oil outlet of one-way valve connects respectively the entrance of the first solenoid directional control valve and the entrance of the second solenoid directional control valve, the outlet of the first solenoid directional control valve connects respectively the rodless cavity hydraulic fluid port of accumulator and potential energy recovery cylinder, potential energy reclaims the rod chamber hydraulic fluid port of cylinder and the first return opening of fuel tank is connected, and the return opening of the second relief valve connects the second return opening of fuel tank;
Accumulator reclaims cylinder rodless cavity hydraulic fluid port with potential energy and communicates and be all connected with the filler opening of Pilot operated check valve, the outlet of the second solenoid directional control valve connects the control mouth of Pilot operated check valve, the oil outlet of Pilot operated check valve connects the filler opening of the first relief valve, and the oil outlet of the first relief valve connects the 3rd return opening of fuel tank;
Pressure transducer is installed on accumulator and potential energy reclaims on the pipeline between cylinder rodless cavity hydraulic fluid port.
2. the potential energy recovery system of jacking equipment according to claim 1 under steady load, is characterized in that: described the first relief valve is proportional pressure control valve.
3. the using method of a jacking equipment as claimed in claim 1 or 2 potential energy recovery system under steady load, it comprises jacking equipment, described jacking equipment comprises luggage carrier and lifting jar, lifting jar is located at the bottom of luggage carrier, it is characterized in that, described jacking equipment also comprises that potential energy reclaims cylinder, potential energy reclaims the bottom that cylinder is located at luggage carrier, the top of luggage carrier is placed with load, lifting jar and potential energy recovery cylinder jointly promote load by luggage carrier and do elevating movement along lifting slope, and this method comprises the steps:
A. determine the load weight that potential energy recovery system is shared
（1）
In formula (1), G
1: in load, be G
3under condition, the load weight that potential energy recovery system is shared;
G
2: the deadweight of luggage carrier;
G
3: the load weight that jacking equipment bears;
S
1: potential energy recovery system is shared the coefficient of load weight, and this coefficient value scope is between 0～1;
B. according to formula (1), draw G
1after, determine that potential energy reclaims the specification of cylinder
（2）
In formula (2): D
1: potential energy reclaims cylinder rodless cavity diameter;
N
1: potential energy reclaims cylinder quantity;
P
1: G
1the Minimum operating pressure of corresponding accumulator, its span is between 10～16MPa;
A: lifting coefficient;
C. determine the specification of accumulator
The actual volume of accumulator:
（3）
In formula (3): V
0: the actual volume of Accumulator arrangements;
L: potential energy reclaims the working stroke of cylinder;
Determine the total measurement (volume) of accumulator:
（4）
In formula (4): V
w: the total measurement (volume) of accumulator;
P
0: the inflation pressure of accumulator;
P
2: G
1the Maximum operating pressure of corresponding accumulator, its span is P
2=1.1～1.2 P
1);
K: polytropic index, normal temperature state: k=1, changeable state: k=1.4;
Determine quantity and the specification of accumulator:
（5）
In formula (5): V: the specification of selected accumulator;
N
x: the quantity of accumulator;
D. after potential energy recovery system starts, lifting jar promotes load by luggage carrier and along lifting slope, starts to rise, potential energy reclaims the synchronous auxiliary pushing of cylinder, and it rises, and the power that potential energy reclaims cylinder is provided by accumulator, once during the pressure that detects of pressure transducer lower than Minimum operating pressure P
1, the first solenoid directional control valve obtains electric, and slippage pump is to repairing in accumulator, until pressure arrives P
1after stop, guaranteeing that the pressure in accumulator is not less than P
1;
When e. jacking equipment declines, the hydraulic oil of lifting jar rodless cavity flows back to fuel tank, and potential energy reclaims cylinder rodless cavity hydraulic oil and is depressed in accumulator, and the second solenoid directional control valve obtains electric simultaneously, Pilot operated check valve is opened, when pressure transducer detects pressure higher than Maximum operating pressure P
2time, the control signal of the first relief valve start to reduce until the pressure that pressure transducer detects lower than P
2after stop;
F. in load and luggage carrier lifting process, the pressure in accumulator is all the time at P
1～P
2between change, potential energy reclaims the load weight that cylinder bears by the potential energy reclaiming and is no less than all the time G
1, the load weight G that lifting jar is born
4meet:
（6）
G. work as G
3while changing, G
1according to formula one, also synchronously change the P of corresponding accumulator
1and P
2also change, make G
1can automatically adjust according to the variation of load deadweight.
4. the using method of the potential energy recovery system of jacking equipment according to claim 3 under steady load, is characterized in that: described coefficient S
1get 0.4～0.6.
5. the using method of the potential energy recovery system of jacking equipment according to claim 3 under steady load, is characterized in that: the inflation pressure P of the accumulator in step c
0=0.8～0.9 P
1.
Priority Applications (1)
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|---|---|---|---|
| CN201310082413.4A CN104047935B (en) | 2013-03-15 | 2013-03-15 | The potential energy recovery system of jacking equipment under steady load and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310082413.4A CN104047935B (en) | 2013-03-15 | 2013-03-15 | The potential energy recovery system of jacking equipment under steady load and using method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104047935A true CN104047935A (en) | 2014-09-17 |
| CN104047935B CN104047935B (en) | 2016-03-30 |
Family
ID=51501203
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266412A (en) * | 2018-01-16 | 2018-07-10 | 何学才 | A kind of step heating-furnace hydro-cushion reducing energy consumption device produced |
| CN111396378A (en) * | 2020-04-09 | 2020-07-10 | 大连理工大学 | Motor-driven hydraulic system for crane luffing mechanism and method of operation thereof |
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| DE3310702A1 (en) * | 1983-03-24 | 1984-09-27 | Allweiler Ag, 7760 Radolfzell | Method and device for operating a hydraulic lift |
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| CN108266412A (en) * | 2018-01-16 | 2018-07-10 | 何学才 | A kind of step heating-furnace hydro-cushion reducing energy consumption device produced |
| CN111396378A (en) * | 2020-04-09 | 2020-07-10 | 大连理工大学 | Motor-driven hydraulic system for crane luffing mechanism and method of operation thereof |
| CN111396378B (en) * | 2020-04-09 | 2021-03-26 | 大连理工大学 | Motor-driven hydraulic system for crane luffing mechanism and method of operation thereof |
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|---|---|
| CN104047935B (en) | 2016-03-30 |
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