Dynamic radial-type equipment is used for gas compression and is operated intensively in various industries.
Design of a centrifugal compressor
Despite the variety of models, units based on the centrifugal principle of gas compression are equipped with a standard set of components:
- a robust metal casing;
- inlet and outlet nozzles;
- impellers accelerating the gas flow;
- a diffuser that converts the kinetic energy of the gas flow into increased pressure;
- a driver (diesel, electric, steam, etc.).
Classification
- number of compression stages: single-stage, multistage;
- degree of enclosure of the rotating element;
- number of shafts: single-shaft, multi-shaft;
- relative arrangement of impellers: unidirectional, counter-rotating;
- type of compressed gas: air, oxygen, nitrogen;
- casing type:
- with a horizontal (pressure up to 60 atm) or vertical (up to 700 atm) split, providing access to the rotor;
- with an integrated gearbox.
Principle of operation
The operation of centrifugal rotary units is based on dynamic compression of the gas due to the rotation of the impeller blades. As a result, the gas moves from the centre to the periphery, is compressed and accelerated. The next stage is a reduction in velocity in the diffuser and the conversion of kinetic energy into potential (pressure) energy. The medium then moves into the return channel and enters the next stage.
The components of the equipment are protected from corrosion and rapid wear by lubrication.
Features
- no contact between oil and compressed gas, which has a positive effect on product purity;
- high compression achieved within a short operating period;
- power, pressure and efficiency depend on the unit capacity;
- a combination of simple, reliable design, long service life and high efficiency at full load;
- good maintainability with minimal maintenance and low operating costs;
- smooth, pulsation-free flow without pressure surges or drops;
- low vibration, eliminating the need for complex foundations;
- compact dimensions and low weight;
- capability for continuous supply of compressed gas to the consumer.
During inspections, particular attention is paid to rotor components, couplings, the gearbox, bearings and parts subjected to constant loads.
Applications
- food and chemical industries;
- oil and gas processing;
- mining;
- metallurgy;
- power generation.
Industrial centrifugal compressors
are used for cooling, air conditioning, separation and generation of gas mixtures.
About the company
RusGazKrio LLC offers to purchase centrifugal compressors at factory prices
for nitrogen, air and oxygen. On the company’s website you can review technical specifications, get advice on any questions, request a technical and commercial proposal, invite the company to participate in a tender, or submit a purchase request.
Our specialists will carry out the design, calculations, installation and commissioning of the centrifugal compressor unit.
For fifteen years, RusGazKrio has represented in Russia the Chinese compressor plants of Hangzhou Oxygen Plant Group, assumes responsibility for the products it supplies, and provides the full range of spare parts.
We act as a general contractor for comprehensive projects
We provide comprehensive services for design, manufacturing, delivery and installation of equipment for compressor shops in Russia and CIS countries
Own production facility equipped with modern equipment. Quick order placement at partner production sites
We organize visits of customer representatives to
production facilities, including to the compressor equipment manufacturing plant in China
Possibility to replace worn-out compressor equipment with
analogues without significant changes to site boundaries
We implement a monitoring, analysis and forecasting system for supplied equipment - MAPRO
We carried out the re-equipment of the oxygen-compressor shop at one of the world leaders in metallurgy - PJSC "NLMK"
