Heavy – duty Centrifugal Compressors Expert associated with this product. send mail Phone Call Online Interview Share: Send to a Friend Description Technical Specifications Product videos General Description of Heavy – duty Centrifugal Compressors API STANDARD 617 A wide range of centrifugal compressors according to API 617 are supplied. These compressors with high degree of reliability and low maintenance cost are used in petrochemical and refinery industries, natural gas, steel and cement plants, food industries as well as transportation. Our centrifugal compressors could be supplied with electro motors as well as turbines, equipped with complex control systems in order to meet projects requirements in various pressures, capacities and powers. The maximum pressure for these compressors could be 200 bar and the maximum suction capacity could be 480,000 m3/hr. The custom-built compressors in this line are individually engineered to meet each customer’s specific needs using proven standardized components. HAVAYAR Company combines the advantages of custom-built machines (maximum efficiency, layout flexibility, materials selection etc.) and standardization (proven reliable components; availability of spare parts). These compressor series comes in a range of sizes. For each size the baseplate, gearbox, stage volutes, cooler shells, oil and gas piping, and auxiliaries are standardized. Machines can be produced to meet the individual requirements of each application through the appropriate selection of key design factors including: Number of stages Shaft rotational speed Diameter of impellers Exchange surface of coolers Integrally Geared Compressors Integrally geared Compressors are design based on API 617 (672). The compact design of these compressors with use motor and turbine drivers makes the special gas processes possible in petrochemical, refinery, chemical, cement, steel and transportation industries. The maximum achievable pressure for these compressors could be more than 170 bar and the maximum suction capacity could be 120,000 m3/hr. The multi-shaft configuration allows frequent intercooling, and therefore better compression efficiency compared to traditional in-line centrifugal compressors. Axial intel flow guarantees and optimum aerodynamic design, and therefore very high stage efficiency. Due to its rugged mechanical design, this type of machine guarantees very high reliability. Almost all type of gases can be handled by this compressor design with appropriate construction materials and seal systems. Vertical Split Centrifugal Compressor Vertically Split (barrel) Centrifugal Compressors are used to compress gases in various chemical technologies, such as crude oil processing, urea production or natural gas storage & treatment. A common feature of these compressors is that their assembled flow oath is placed in a cylindrical vessel closed by means of heads. In order to prevent escape of the gas handled, these compressors are provided with outer hermetic seals that can be designed as contact type oil seals, floating ring oil seals or dry gas seals. Standard pressure range of vertically spilt centrifugal compressors reaches up to 200 bar, machines for pressures can be design individual basis. Horizontally Split Centrifugal Compressors Centrifugal compressors with horizontally split casing intended particularly for flammable, toxic or explosive gases used in all branches of industry and in all cases where outer hermetic seals must be used. Outlet seals can be designed as oil seals (contact type or floating ring seals) or dry gas seals. These machines are predominantly used in the chemical industry as process as process or refrigerating compressors. If necessary, they can be provided with up to two intercoolers and refrigeration compressors with up to two side streams. In order to increase control ranges, the compressors can be equipped with inlet guide vanes on the first stage. Main Parts Description of Centrifugal Compressors Dry gas seal system The dry gas seal control system supplies filtered gas (either process or other clean gas) and nitrogen buffer gas to the dry gas seals at the correct pressure. The system is designed based on standards and extensive experience with this type of sealing system. Twin filters allowing cartridges to be changes during operation; Control valves for adequate buffering of the seals Monitoring and safety instrumentation. The seal gas system can be either on a separate console or integrated on the main baseplate with the machine. Type of Dry Gas Seals There are many dry gas seal configurations based on their application: Signal seal Tandem seal – Broadly used in the petroleum industry Tandem seal with buffer gas Tandem seal with intermediate labyrinth Double opposed seal – Used when the processed gas is abrasive (like hydrogen). Impellers: Provide optimum efficiency and reliability Have a strong track record for use with corrosive and challenging gases Are individually designed for your process requirements Are performance tested Cover a based range of use Key benefits: Our impellers are available in open or closed configuration • All geometries are tested by R&D Impellers are mounted on the pinion shaft using hirth Their design ensure easy assembly and high reliability Complex Gear Technology Our integrally geared compressors use the advantages complected gear technologies to serve wide ranges or application with high degree of flexibility. The integral gearbox consists of a bull gear and high speed pinions, with a single-helical gear mesh. Casing: The gearbox casing is horizontally split. The low part is fixed to the baseplate and the compressor stages are fixed to it. The gearbox casings can be either cast or fabricated. Gear meshing: The gear unit can be rated in accordance with API Codes. The toothed portion of pinions is integrally forged with the shaft. The bull gear is shrunk in the low speed shaft. Shafts: The shafts are sized to transmit the gear rated power within the stress limits of API Codes. They made of one-piece, heat treated forged or hot-rolled alloy steel, and the entire length of the shaft is machined. Oil & Gas will take complete responsibility for the lateral and torsional analysis of the entire train. The impeller can be overhung mounted at the end of the shaft by means of a frontal Hirth coupling, by a flange (for high speed applications), or hydraulically fitted with a tapered coupling. Thrust collars can be either replaceable or non-replaceable. Redial – Axial Bearing: Axial bearings in the pinion gear ensure a high level of efficiency. This decrease losses, while it increases mechanical rotor stability and reliability. The systems bearings are split horizontally as well, also facilitating inspection and maintenance. The radial bearings are or of the hydrodynamic fluid film, tilting pad type for the high speed shaft and fixed profile type for the low speed shaft. The bearings are split for ease of assembly, equipped with anti – rotation pins and are firmly secured in the axial direction. The bearings design suppresses hydrodynamic instabilities and provides sufficient damping to limit rotor vibrations while the compressor is operating, loaded or unloaded at the specified operating speed .