Numerical dynamic analysis of reciprocating compressor mechanism. Parametric studies for optimization purposes

Pont-Vílchez, A.; López, Javier E.; Rigola, Joaquim; Segarra, Carlos David Pérez

doi:10.1016/j.triboint.2016.06.019

Cited by 15 publications

(3 citation statements)

References 20 publications

(20 reference statements)

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“…Overheating of the suction gas inside the working chamber during suction is investigated by Tuhovcak et al [16]. Studies of Pont et al [17] are devoted to friction losses in the compressor bearing system and losses in the electric motor, Dutra et al [18].…”

Section: Introductionmentioning

confidence: 99%

Development and Research of a Promising Pumpless Liquid Cooling System for Reciprocating Compressors

et al. 2023

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A new pumpless liquid cooling system for a single-stage two-cylinder reciprocating compressor has been developed from the analysis of work processes and cooling systems of reciprocating compressors, where one piston compresses and moves gas and coolant in the cooling system. The intensification of the coolant movement increases in the machine, which can reduce the temperature of the cylinder–piston group and increase the indicator efficiency and the compressor feed rate. A mathematical model of working processes in a reciprocating compressor and its cooling system has been developed on the basic fundamental laws of conservation of energy, mass and motion. A prototype was developed and tested to obtain new knowledge about the processes in the machine and confirm the assumptions made while developing the mathematical model. After a series of experiments, the influence of cooling on the working processes in a reciprocating compressor, the technical work carried out in each working process, the energy and consumption characteristics of a reciprocating compressor with a developed cooling system were established. There was a validation performed of the developed mathematical model of work processes in the machine and the assumptions made. According to the developed mathematical model of work processes, a numerical experiment was carried out, which established: the coolant flow rate decreases with an increase in discharge pressure and increases with an increase in the crankshaft speed when the discharge pressure changes from 0.4 MPa to 0.8 MPa, a decrease in the indicator isothermal efficiency due to the leakage and non-isothermal nature of the compression process, as well as a decrease in the return work in the process of reverse expansion, leading to a decrease in the indicator isothermal efficiency of more than 15%; due to the equalization of pressures in the gas cavities with an increase in discharge pressure, the coolant consumption is reduced by (15 ± 17)%; with an increase in the angular speed of the crankshaft from 800 rpm to 1500 rpm, the coolant flow rate increases by more than 2.5 times, this increase in coolant flow rate is due to an increase in hydraulic resistance due to an increase in gas velocity; in the range from 1000 to 1200 rpm, a maximum of the indicator isothermal efficiency and compressor feed rate is observed; maximum indicator isothermal efficiency and the supply ratio is observed at a coolant flow rate in the range from 800 mL/min to 900 mL/min.

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Section: Introductionmentioning

confidence: 99%

Development and Research of a Promising Pumpless Liquid Cooling System for Reciprocating Compressors

et al. 2023

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“…Some researchers have been trying to apply the achievements of the crank-slider tool to devices. Pont [16] developed a numerical model for a reciprocating compressor mechanism based on the kinematic and dynamic formulation and studied the secondary movements of the piston and crankshaft and their interaction. Almasi [17] built a model of a reciprocating mechanism and took the dynamic force induced by the crosshead into consideration to reduce vibration and optimize the design.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Analysis for a Reciprocating Compressor System with Clearance Fault

Xiao

Song

et al. 2021

Applied Sciences

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In order to explore the failure mechanism of a reciprocating compressor system with clearance fault, we implemented a computational framework whereby a simulation model of the mechanism is established using ADAMS software in this paper, and a typical reciprocating compressor model is introduced to validate the design model. In this work, the joint clearance faults between the crankshaft and linkage, between the linkage and crosshead, and in both locations are taken into account computationally. These faults are one of the major causes of vibration. Through dynamic calculation and analysis of a system with clearance fault, the simulated results show that these clearance faults directly influence the vibration. The larger the gap size, the more severe the vibration and the higher the amplitude of the vibration. Furthermore, the clearance number also affects the vibration greatly.

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“…Without claiming to be an exhaustive exposition of all the questions of an experimental study of valve tightness and increasing their operational efficiency, let's highlight only some aspects of this important problem. Problems of maintaining the performance of a reciprocating compressor unit operating in gas lift and gas transport systems [5,6].…”

Section: Introductionmentioning

confidence: 99%

Methodology of Experimental Investigations of Valve Operation

Seyidahmadov¹

2019

EUREKA: Physics and Engineering

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Tightness, as well as the reliability of the valve plate, is a complex property of the effective operation of compressor cylinders of the first stage and, in general, gas-engine reciprocating compressors. The issue of valve plate tightness is a subject of independent study, since technical and economic efficiency depends on their work. In this connection, only some data obtained under operating conditions are presented in this work. As a research result, it is found that, taking into account the identified requirements for the gas lift system, in order to effectively increase the operating hours of valves with increased tightness of the plate, it is necessary to check and purge the valves. Therefore, each valve in the gas lift compressor station, without subjecting them to cleaning, is first recommended to check for leaks. To confirm the feasibility of checking valve tightness, special equipment is offered for each gas-lift compressor station, a purge chamber, on which the tightness of valve plates is checked. The usefulness and importance of the purge chamber is in preparation of the valve at the gas lift compressor station, which contributes to increased efficiency, safe operation, normal tightness and reliability of its operation.

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Numerical dynamic analysis of reciprocating compressor mechanism. Parametric studies for optimization purposes

Cited by 15 publications

References 20 publications

Development and Research of a Promising Pumpless Liquid Cooling System for Reciprocating Compressors

Development and Research of a Promising Pumpless Liquid Cooling System for Reciprocating Compressors

Dynamic Analysis for a Reciprocating Compressor System with Clearance Fault

Methodology of Experimental Investigations of Valve Operation

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