Pulsatsion Study for Reciprocating Pump, Design Selection

Pulsatsion Study for Reciprocating Pump, Design Selection

(왕복동 압축기의 맥동 분석의 Design Analysis 선정 Guide)

 

API 688 2nd (Pulsation and Vibration Control for Positive Displacement Machinery Systems for Petroleum, Chemical, and Natural Gas Industry Services)에서는 API 674 3rd로 설계되는 왕복동 펌프(Reciprocating Pump)의 Pulsation study 수행 여부를 판단할 수 있는 Selection Guide를 포함하고 있다.

 

[Pulsastion Analysis Selection Chart]   

Speed, *1)	Rated Power per Pump
	Hp < 100 (kW < 75)	100 ≤ hp ≤ 200 (75 ≤ kW ≤ 150)	Hp > 200 (kW > 150)
Speed < 50 % of Max. Allowable	No acoustic or mechanical analysis	Piping system mechanical review	Acoustic simulation and piping system mechanical review
50 % ≤ Speed ≤ 75 %	Piping system mechanical review	Acoustic simulation and piping system mechanical review	Acoustic simulation and mechanical analysis
75 % < Speed	Acoustic simulation and piping system mechanical review	Acoustic simulation and mechanical analysis	Acoustic simulation and mechanical analysis

*1) Speed: Maximum Operating Speed as a % of the Maximum Allowable Speed

 

한편, 상기 Table에서 언급하고 있는 Maximum Allowable speed는 Pump의 Stroke length에 따라 아래와 같이 구분하여 평가할 수 있다.

 

[Maximum Allowable speed Table]  

Stroke Length		RPM for a Single-acting Plunger Pump	RPM for a Double-acting Piston-type Pump
mm	in.
50	2	450	140
75	3	400	127
100	4	350	116
125	5	310	108
150	6	270	100
175	7	240	94
200	8	210	88
250	10	168	83
300	12	140	78
350	14	120	74
400	16	105	70

 

 

[왕복동 압축기 Acoustic Model, Example]

 

주식회사 이너턴스는 소음진동 전문설계 업체로서 Pulsation Study를 포함하여, 아래와 같은 Engineering Service를 제공하고 있습니다.

 

-       Environmental Noise    

-       Noise Survey    

-       Stability Analysis     

-       Torsional Vibration Analysis   

-       Acoustic Induced Vibration