Centrifugal Compressor Introduction
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28-Oct-2014Category
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Transcript of Centrifugal Compressor Introduction
INTRODUCTION TO CENTRIFUGAL COMPRESSOR
CONTENTS Introduction (Reciprocating vs. Centrifugal) Theory of operation Main parts Classifications
IntroductionReciprocating Compressor
Centrifugal Compressor
High EfficiencyHigh Vibration
Less Efficiency Less Vibration
MAIN PARTS
MainImpeller
CasingCasing
ShaftShaft Bearing
DiffuserCrossover
Return ChannelDiaphragm
Inlet Connections
Balance Piston Seals
MAIN PARTS Impeller Types
Open Impeller
Semi-open Impeller
Closed Impeller
MAIN PARTS Impeller with Inducer
Reduced inlet Mach Number and ability to increase speed and hence output head
COMPRESOR CLASSIFICATIONSA. According to Casing Split Method1. 2. 3. 1. 2. 3. 4. 5. 1. 2. 3. Horizontal Split Vertical Split Barrel Design Straight In/Out with Inter-Cooler Back-to-Back Double Flow Side Stream Overhung Beam Type (Between Bearing) Integrally Geared
B. According to Impellers Arrangement
C. According to Bearing Configuration
A- Casing Split Method
Vertically Split Good Seal Difficult Maintenance
Horizontally Split Bad Seal Easy Maintenance
A- Casing Split Method
Vertically Split Good Seal Difficult Maintenance
Horizontally Split Bad Seal Easy Maintenance
Barrel Type Compressor
B- Impellers Arrangement 1- Straight Arrangement
B- Impellers Arrangement 2- In/out with Intercooler
B- Impellers Arrangement 3- Back-to-Back
B- Impellers Arrangement 4- Double Flow
B- Impellers Arrangement 5- Side-Stream
C- Bearing Configuration
Overhung Low cost Sensitive to unbalance
Beam (Between Bearing) More expensive More rigid
Integrally Geared
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