Dry gas seals for compressors
4th Quarter 2012
Pneumatic systems & components
AESSEAL has launched a dry gas mechanical seal range designed to maintain an optimum sealing interface gap between rotating and stationary sealing elements, ensuring reliability, consistent performance and reduced gas consumption. They come in two designs: the CCS conventional compressor seal and the HHCS hydrostatic and hydrodynamic compressor seal.
The CCS compressor dry gas seal utilises proven spiral groove lift technology to provide reliable compressor sealing across a wide range of operational duties. This seal is ideally suited for the retrofitting of wet compressor seals and the replacement of existing dry gas seal products.
The HHCS compressor dry gas seal utilises patented DualDam technology to provide lift even under static conditions. This unique action provides zero face contact under conditions of starting, stopping and slow roll. DualDam also provides a more stable gas fluid film in all phases of operation to ensure a more reliable seal. Five design elements combine to provide an optimum sealing interface, addressing specifically the period of transition between static and dynamic operation, the period where many dry gas seals are generally considered to be most vulnerable to breakdown in the sealing interface.
During the static condition, the outer sealing dam acts in conjunction with the feed holes and annular slot to provide controlled pressure decay. This allows for a pressure balance to be achieved and provides a small opening force on the seal face.
Unlike conventional equipment which, during start-up, undergoes a brief period when the seal faces are in contact before sufficient hydrodynamic lift force is generated to separate them, hydrostatic lift technology helps to eliminate this contact. This reduces the risk of seal failure.
For more information contact Rob Waites, AESSEAL, +27 (0)11 466 6500, [email protected], www.aesseal.co.za
Further reading:
Compressed air treatment do’s and don’ts
Artic Driers International
Editor's Choice Pneumatic systems & components
As a long-established importer and manufacturer of air dryers, Artic Dryers often sees the results of poor installation and issues with aftercoolers that create serious problems in air drying systems.
Read more...
Next-gen air compressors for plastics manufacturer
Pneumatic systems & components
Integrated Air Solutions has reinforced its partnership with global compressor manufacturer, ABC Compressors by facilitating the installation and commissioning of two next-generation direct-drive ABC machines for a prominent plastic manufacturer in South Africa.
Read more...
Seamless compressed air supply
Pneumatic systems & components
The efficient performance of compressed air systems is the foundation for seamless production processes and sustainable business. The adoption of a comprehensive service plan delivered by an OEM like Atlas Copco is key to overall compressor performance, efficiency, reliability, and long lifecycle.
Read more...
Selection of two-port valves: an open and shut case
SMC Corporation South Africa
Pneumatic systems & components
Little consideration is generally given to two-port valves because they are often perceived as simple devices that only open and close to control downstream fluid supply. Although this is mechanically true, choosing the optimal two-port valve for your application can make a big difference, saving space, weight and energy consumption.
Read more...
Integrated Air Solutions expands its compressor rental service
Pneumatic systems & components
The significant growth of the industrial air compressor rental division launched by Integrated Air Solutions under a year ago, has prompted the need for more resources and equipment. Headed up by Rudolf
...
Read more...
Thor’s hammer of pneumatic knockers
Neu Matics SA
Pneumatic systems & components
Neu Matics acts as sole distributor for a range of internationally recognised brands, and one of these is the pneumatic knocker from singold.
Read more...
Compressed air drying and monitoring with low dewpoints
Artic Driers International
Pneumatic systems & components
Artic Driers manufacturers the Sahara low dewpoint, heatless pressure swing air dryers with SANS 347 pressure code. These desiccant-rich pressure dryers comfortably obtain pressure dewpoints of -40°C.
Read more...
Tyre-actuated globe valve
Parker Hannifin - Sales Company South Africa
Pneumatic systems & components
Parker Hannifin has launched a tyre-actuated pneumatic valve in its Bestobell cryogenic globe valve range. The valve can be operated remotely with a single switch command, providing much greater speed and convenience than a manually operated type.
Read more...
Oil-free beer and wine processing
Pneumatic systems & components Hydraulic systems & components
The food and beverage industry depends on superior quality, 100% oil-free compressed air to eliminate the presence of unwanted oil vapour throughout the production line.
Read more...
Ten considerations for optimum use of vacuum technology
Pneumatic systems & components
Vacuum technology plays a huge role in the packaging of foodstuffs and other products. Here are ten considerations to help you use vacuum technology as effectively and efficiently as possible, so that you can optimise processes and cut operating costs.
Read more...
printer friendly version