Influence of a tapered cylinder nozzle on pressure pulsations in a variable high-speed reciprocating compressor piping system

Liu, Zhan; Wang, Zengli; Feng, Qian; Yu, Xiaoli

doi:10.1177/0954408915620738

Cited by 3 publications

(6 citation statements)

References 13 publications

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“…Therefore, a pulsating mass flow rate shown in equation (11) was set at the inlet boundary condition, and the time domain waveform and frequency spectrum were shown in Figure 6. The outlet was set as atmospheric pressure (0.1 MPa (absolute pressure)).…”

Section: Three-dimensional Fluid Dynamic Analysismentioning

confidence: 99%

“…The capacity rating was 12 m 3 /min, the rated compression ratio was 3, and the rotational speed was 420 r/min. The ideal pulsating mass flow rate was shown in equation (11). Pressure in two kinds of piping systems ( Figure 7) was tested: (1) piping system with an ESSTE and (2) piping system with a TTE.…”

Section: Three-dimensional Fluid Dynamic Analysismentioning

confidence: 99%

“…Liu et al. 11 introduced a tapered cylinder nozzle to attenuate pulsations, which also brings difficulty in remanufacturing the existing ST. Avoiding the high-cost and time-consuming manual fabrication, Ma et al.…”

Section: Introductionmentioning

confidence: 99%

“…To achieve this, sizable modifications should be given to turn the existing ST into a volumechoke-volume filter. Liu et al 11 introduced a tapered cylinder nozzle to attenuate pulsations, which also brings difficulty in remanufacturing the existing ST.…”

Section: Introductionmentioning

confidence: 99%

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Attenuation of pulsations in the reciprocating compressor piping system with an elbow-shaped surge tank

Yang

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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An elbow-shaped surge tank is proposed to suppress the pressure pulsations. The transfer matrix method was developed and the mathematical model was established to predict the distribution of pressure pulsations in the piping system (on which a surge tank was already installed) with an elbow-shaped surge tank. Simulation work of the whole piping system was performed. The results show that the elbow-shaped surge tank has good performance to attenuate the pressure pulsations. The frequency analysis shows that the amplitude for the first pulsation frequency is attenuated to a low level. The impulse response was analyzed to examine the efficiency of suppressing pulsations by using the suppressor. The theoretical analysis showed that there exists the optimal suppression performance when setting the distance between the elbow-shaped surge tank and the existing one. Meanwhile, modifying the ratio of length to diameter with a fixed surge volume could also impact the pressure pulsations. The analysis results can be used as a reference in designing and installing the elbow-shaped surge tank.

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Section: Three-dimensional Fluid Dynamic Analysismentioning

confidence: 99%

Section: Three-dimensional Fluid Dynamic Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Attenuation of pulsations in the reciprocating compressor piping system with an elbow-shaped surge tank

Yang

2018

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Wang et al [11] applied a 3D FSI model to find out the effective flow area of the valves. Liu et al [12] studied the impact of a tapered cylinder nozzle on pressure pulsation in a high-speed reciprocating compression system. The CFD model, however, seems to be unsuitable for specific goals in natural gas stations because it is very arduous to read the entire geometry into the CFD program, even if in the future the current unrealistically long computational time becomes shorter.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Pressure Pulsation Influence on Compressed Natural Gas (CNG) Compressor Performance for Ideal and Real Gas Models

et al. 2019

Self Cite

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This work investigates the effects of pressure pulsations on reciprocating natural gas compressor performance thermodynamically. A nonlinear hybrid numerical model is thus developed to consider the interaction between the compressor and the pipeline system. The suction chamber, compressor cylinder and discharge chamber are modelled integrally based on the first law of thermodynamics and mass balance, and the pipeline flow is described by using the gas dynamic model. Methane is considered as the working fluid and its properties are computed based on ideal and real gas assumptions. For the real gas model, the methane properties are obtained by means of calling the NIST REFPROP database. The validity of numerical results is confirmed by previous experimental values. Results from the examinations of pressure pulsation influence demonstrate that discharge resonance requires more specific work than suction resonance in the same harmonic; in the suction system, the first harmonic response reduces the mass flow rate but significantly increases specific work, and the second harmonic response has a strong supercharging effect but the specific work is increased slightly; in the discharge system, the mass flow rate is changed little by pressure pulsations, but the indicated power and specific work are increased significantly; for the real gas model, the in-cylinder temperature during the compression and discharge phases, mass flow rate and indicated power are higher than those for the ideal gas model, whereas the specific work is less for the real gas model than for the ideal gas model.

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Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime

Pana

Dinu

2021

MATEC Web Conf.

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The pulsation bottles are mounted at the inlet and outlet of / from the reciprocating compressor cylinders to even out the gas parameters (pressure and temperature). They ensure stable working conditions in the compressor cylinders and eliminate / reduce vibrations. The sizing of the pulsation bottle is done based on the geometric parameters of the compressor, the volume efficiency and working pressure. The use of a dynamic model made in the LMS Amesim program allows the study of a compressor with a set of pulsation bottles at the modification of: the pressure and temperature at the inlet / outlet of the compressor, the speed of the compressor the volume of the dead space and blocking or removing of the valves. The model includes the compressor cylinder with the corresponding dead spaces, the compressor valves, the suction and discharge pipelines and crank connecting rod mechanism. The simulation takes into account of the: gas composition, temperature and pressure in the system. The variation of the pressure in the bottles can be checked under these conditions. The values of the disturbing forces for a range of working and adjustment parameters can be obtained, values that can be used in a dynamic analysis according to API 618.

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Influence of a tapered cylinder nozzle on pressure pulsations in a variable high-speed reciprocating compressor piping system

Cited by 3 publications

References 13 publications

Attenuation of pulsations in the reciprocating compressor piping system with an elbow-shaped surge tank

Attenuation of pulsations in the reciprocating compressor piping system with an elbow-shaped surge tank

Analysis of Pressure Pulsation Influence on Compressed Natural Gas (CNG) Compressor Performance for Ideal and Real Gas Models

Numeric simulation of the pulsation bottle for a reciprocating compressor in dynamic regime

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