Evaluation of performance parameters of indigenously developed roots pumping system

Maqsood, M.; Usman, Adam; Bodla, M. F.; Ali, Jamel

doi:10.1088/1757-899x/146/1/012047

Cited by 3 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Existing pumps, nevertheless, also have numerous problems and shortcomings that affect the pump's applicability. During the operation of a Roots pump, the meshing of the internal rotor is periodic, which reduces the flow field stability [10]. The surface shape of the Roots pump rotor is complex, which brings considerable difficulties in manufacture and installation.…”

Section: Literature Reviewmentioning

confidence: 99%

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

Zhang

Yang

et al. 2022

Machines

View full text Add to dashboard Cite

Against the backdrop of the rapid burgeoning of international energy engineering, the efficient utilization of energy is a paramount factor. The key idea in this paper is to propose an elliptical rotor scraper pump (ERSP) in order to address the imperfections and defects of traditional volume pumps, such as their labyrinthine design, low volume utilization efficiency and undesirable sealing performance. The ERSP can dramatically achieve the aims of ameliorating pump structure and improving energy efficiency. One of the Roots pump's rotors or the vane pump's shifting blade is replaced by a swing scraper in the ERSP. It is worth noting that a small swing range is a high-priority feature of the scraper; the scraper not only serves the purpose of dividing the pump cavity and self-sealing the unit but also reduces the noise level when working. A vital function of ERSP is the efficient conversion of mechanical energy into fluid pressure energy by changing the volume. Simultaneously, based on theoretical analysis, the mathematical model of the ERSP is established, and its kinematic characteristics are investigated, using ADAMS to verify the kinematic rationality of the ERSP. Ultimately, the research group manufactured a prototype of the pump, based on the previous simulation results and calculations, and experiments verified the feasibility of the pump. The design and research of the ERSP have essential reference significance for the development of fluid energy machinery technology.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

Zhang

Yang

et al. 2022

Machines

View full text Add to dashboard Cite

show abstract

“…This can bend and deform the gear shaft and increase the wear of the moving parts and the load on the bearings, shortening the service life of the gear pump [10,11]. Roots pumps are easy to manufacture at a low cost, and due to their high pumping speed, they have a significant advantage in the case of a large amount of air pumping volumes over a short period [12]. However, the rotor of a roots pump either has an inherent clearance or the clearance increases as the work proceeds, which results in severe internal leakage and low efficiency.…”

Section: Literature Reviewmentioning

confidence: 99%

Study of the Self-Locking Characteristics of the Swing Scraper of an Elliptical Rotor Scraper Pump

Cao

Zhang

et al. 2022

Machines

View full text Add to dashboard Cite

This paper proposes an Elliptical Rotor Scraper Pump (ERSP) to address traditional displacement pump defects, such as complex structures, poor self-sealing, low volume utilization, and considerable noise, etc. The ERSP utilizes a swing scraper instead of one rotor in a conventional multirotor pump or reciprocating moving vanes in a traditional vane pump and can achieve high-pressure output through pressure self-sealing. The swing scraper can divide the working chamber into high- and low-pressure rooms. Due to the small swing amplitude of the scraper, the ERSP has low operating noise. The ERSP rotor with an elliptical shape can significantly improve pump volume utilization, thus, forming a kind of fluid pump without a distribution valve, high pressure, and compact structure, and can work efficiently at high speed. This paper establishes a three-dimensional model and mathematical model for the ERSP, then develops the mathematical relationship between the scraper rotation angle and rotor rotation angle and carries out the simulation analysis based on MSC ADAMS. Then, the self-locking characteristics of the ERSP are studied through a force analysis of the swing scraper. Finally, our research group designs and produces a prototype based on existing research and verifies the superiority of the ERSP and the correctness of the non-self-locking condition through experiments. The results in this paper provide a reference for research on the self-locking characteristics of fluid rotor pumps and engineering optimization, which has great significance to the development of fluid power machinery.

show abstract

Effect of Operating Conditions on the Performance of Gas–Liquid Mixture Roots Pumps

Guo

Luo

et al. 2021

Energies

View full text Add to dashboard Cite

The performance of the gas–liquid mixture Roots pump at different operating conditions is investigated in this paper. The pump efficiency was first increased from 48% to 64%, and then decreased to 59% with the increased inlet CO2 volume fraction (from 0.8 to 1). The increased rotational speed (from 1000 rpm to 4000 rpm) and pressure ratio (from 2 to 10) can lead to a reduction in the pump’s efficiency from 67% to 43% and from 48% to 33%, respectively. The variation in the pump’s efficiency is affected by the volumetric efficiency and the flow efficiency simultaneously. The high pressure and the CO2 volume fraction in the outlet zone can increase the leakage, leading to a reduction in the volumetric efficiency. The flow efficiency decreases with the increase in the local pressure at the outlet zone and the backflow density. The outlet zone pressure can also affect the fluid properties by changing the density of the gas phase. Therefore, the combined effect of the outlet zone pressure and the working fluid properties is considered to be the main factor affecting the performance. This paper further explores the suitability of Roots pumps for compressing gas–liquid mixtures.

show abstract

Evaluation of performance parameters of indigenously developed roots pumping system

Cited by 3 publications

References 1 publication

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

Modeling, Kinematic Characteristics Analysis and Experimental Testing of an Elliptical Rotor Scraper Pump

Study of the Self-Locking Characteristics of the Swing Scraper of an Elliptical Rotor Scraper Pump

Effect of Operating Conditions on the Performance of Gas–Liquid Mixture Roots Pumps

Contact Info

Product

Resources

About