The Application Study of Accumulator Used in Hydraulic System of 20MN Fast Forging Machine

Dai, Min; Zhao, Shengfeng; Yuan, Xiao Yang

doi:10.4028/www.scientific.net/amm.80-81.870

Cited by 6 publications

(3 citation statements)

References 5 publications

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“…The results showed that the compound system increased the energy efficiency by approximately 39%. Dai et al [29] applied a recovery accumulator to a 16 MN fast forging hydraulic press to reduce the installed power by the absorption of large flow and pressure pulses. Results show that the accumulator has promising energy-saving effects.…”

Section: Introductionmentioning

confidence: 99%

A Novel Energy-Efficient Transmission System and Control Strategy for Hydraulic Machines

Yan

Nie

et al. 2023

International Journal of Energy Research

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Each part of a hydraulic press dissipates a large amount of energy when energy or power is transmitted. Therefore, this study proposes a 3-D vertical arrangement structure for the hydraulic press to reduce their energy dissipation. In the proposed structure, the aboveground and underground spaces are comprehensively utilized, and then the hydraulic equipment are arranged three-dimensionally and set in layers according to the functional requirements. Some equipment is connected directly to minimize the use of valves and pipelines and reduce the transmission distance of hydraulic energy between the pump station and the actuator. Furthermore, a method for scheduling the drive system in the above structure is presented to share a transmission zone with no conflict and shorten their idle time. The composition of each zone is set to match the power demand of each operation to achieve the scheduling schemes. Finally, the proposed scheme is applied to a 31.5 MN hydraulic press as a case study. Results showed that the energy efficiency increased from 43.95% to 85.03%, demonstrating excellent energy-saving potential.

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Section: Introductionmentioning

confidence: 99%

A Novel Energy-Efficient Transmission System and Control Strategy for Hydraulic Machines

Yan

Nie

et al. 2023

International Journal of Energy Research

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“…Recent studies on the energy efficiency of hydraulic presses have mainly concentrated on energy matching and energy recovery. When it comes to energy recovery, an energy regeneration system is used to recover and store in an accumulator the kinetic energy or gravity potential energy of the hydraulic press slider that will be released during the subsequent operation [16][17][18][19][20]. To match the loads and improve efficiency, the operational parameters of the hydraulic press are examined and improved using data envelopment theory [21].…”

Section: Introductionmentioning

confidence: 99%

Energy Saving Implementation in Hydraulic Press Using Industrial Internet of Things (IIoT)

Sumit

Gupta

Juneja³

et al. 2022

Electronics

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With the growing cost of electrical energy, the necessity of energy-saving implementation in industries based on energy audits has become a major focus area. Energy audit results indicate energy-saving potential in an application and require the physical presence of the auditor’s team for monitoring and analyzing the energy consumption data. The use of Industrial Internet of Things (IIoT) for remote data monitoring and analysis is growing and new industrial applications based on IIoT are being developed and used by various industrial sectors. Possibilities of a mixed method of physical and remote energy audit using IIoT in industrial applications and its advantages as proposed in this research work needs to be explored. Existing hydraulic press machines running with direct online starter (DOL) can be run with variable speed drive (VSD) for energy saving but this requires an extensive energy audit. Key electrical and operational parameters of the hydraulic pump motor were monitored and analyzed remotely using IIoT in this research work by operating the hydraulic press with DOL and VSD motor control methods one by one. The input power factor of the hydraulic pump motor showed an improvement from 0.79 in DOL control to 0.9 in VSD control at different motor loads. The hydraulic pump motor starting current showed a reduction of 84% with VSD control. The hydraulic pump motor’s continuous current was reduced by 40% and 65% during the loading and unloading cycle, respectively, with VSD control. Electrical consumption was reduced by 24% as a result of operating the hydraulic pump motor at 35 Hz with VSD control without impacting the performance of the hydraulic press. These results indicated more efficient control by changing to VSD control in comparison with DOL control. A combination of physical and remote energy audits as performed in this research work using the proposed IIoT framework can be utilized for implementing energy saving in hydraulic presses thus motivating industries to adopt available more energy-efficient technologies at a faster pace.

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“…Yan et al [18] proposed a flywheel energy-saving system (FESS) that can store the redundant energy at no-load stages and low-load stages and then release the stored energy at high-load stages. Dai et al [19] applied a hydraulic accumulator to a 20 MN fast forging hydraulic press to realize energy conversion by absorbing large flow-pressure pulses and hydraulic shock. The results show that the hydraulic accumulator has promising energy-saving effects.…”

Section: Introductionmentioning

confidence: 99%

Energy-Efficiency Improvement and Processing Performance Optimization of Forging Hydraulic Presses Based on an Energy-Saving Buffer System

Yan

Chen

2020

Applied Sciences

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This paper proposes an energy-saving system based on a prefill system and a buffer system to improve the energy efficiency and the processing performance of hydraulic presses. Saving energy by integrating such systems into the cooling system of a hydraulic press has not been previously reported. A prefill system, powered by the power unit of the cooling system, is used to supply power simultaneously with the traditional power unit during the pressurization stage, thus reducing the usage of pumps and installed power of the hydraulic press. In contrast to the traditional prefill system, the proposed energy-saving system is controlled by a servo valve to adjust flow according to the load profile. In addition, a buffer system is employed to the cooling system to absorb the hydraulic shock generated at the unloading stage, store those shares of hydraulic energy as a recovery accumulator, and then release this energy to power the prefill system and the hydraulic actuator in the subsequent productive process. Finally, through a series of comparative experiments, it was preliminarily validated that the proposed system could reduce the installed power and pressure shock by up to 22.85% and 41%, respectively, increase energy efficiency by up to 26.71%, and provide the same processing characteristics and properties as the traditional hydraulic press.

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The Application Study of Accumulator Used in Hydraulic System of 20MN Fast Forging Machine

Cited by 6 publications

References 5 publications

A Novel Energy-Efficient Transmission System and Control Strategy for Hydraulic Machines

A Novel Energy-Efficient Transmission System and Control Strategy for Hydraulic Machines

Energy Saving Implementation in Hydraulic Press Using Industrial Internet of Things (IIoT)

Energy-Efficiency Improvement and Processing Performance Optimization of Forging Hydraulic Presses Based on an Energy-Saving Buffer System

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