Transformer in a research institute
- Power: 31,5 MVA
- Schließkraft: 31.500 kN
- Oil volume: 19 to.
- Outdoor installation
On a 31.5 MVA transformer at a research institute a GIEBEL Adsorber DUO-VARIO TB 550-PA was assembled in August 2012. The previous conventional dehumidifier size L3 has been replaced. Since the mounting of the adsorber, the oil was tested at various time intervals and analyzed in a laboratory. Since the the beginning of using the GIEBEL Adsorber two positive results have set in.
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Transmission in the Weir
- 4x Gearbox with an age of about 20 years
- Oil volume in the gearbox
- Cycle every 2 hours
- Influence of sun and weather indirectly present
- Long downtimes, less frequent operation
Weir systems provide sufficient water depth in rivers and canals to allow shipping. Furthermore, weirs allow a slower flow rate of the water, which makes riverbeds and bridge piers less flushed or undermined.
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Oil mist separator on a hydraulic power unit
- Operation: continuous use
- Hydraulic tank with 50-70 l oil volume
- Hydraulic oil HLP46 mineral oil
- Oil exchange volume: 35l / min in the circulation
- Oil temperature 50-60 degrees
Hydraulic power units are used in oil circulation lubrication systems. These systems cool and lubricate bearings and gearboxes. Particularly in the case of large or high-speed transmissions in which a high temperature load is present due to the rotational speed or ambient temperature, oil circulation lubrication offers advantages. The oil in the circuit is removed from the hydraulic tank and returned again.
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Gearbox in the suger Industry
Data to the plant:
- Use Adsorber from 12l free volume
- Adsorber possible outdoors
- 100 Gears in use
- Standstill corrosion no longer occurs with adsorber application
- campaign from September to december
Sugar beets based on sugar beet and sugar cane are produced using GIEBEL adsorbers. Carefully designed ventilation dryers are dimensioned to save space.
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Hydraulic unit at an Injection molding machine
- Building year: 2002
- Closing force: 31.500 kN
- Oil type: Mobil DTE 25
- Tank volume: 6.000 Liter
- Cycle time: 98 to 120 sec.
- Number of cycles: 720 to 881 per day
To prevent condensation damage in May 2014 GIEBEL adsorber of type DUO-VARIO 560-PA were assembled at several plastic injection molding machines with servo hydraulics. Not only the high acquisition and maintenance costs of the plant, but also the high number of cycles and thus the load of the hydraulic oil with moist air have moved to implement this measure.
The results speak for themselves and demonstrate the added value of a ventilation dryer to hydraulic units. The water content in the oil has fallen steadily after the assembly of the adsorber.
ARCTICLE AS PDF-FILE
Hydraulic unit in a wheel rolling mill
Objectives: Prevention of condensation and permanently good oil quality
Water and dirt particles are 80% the cause of damages in hydraulic systems, gears and bearings. In many industrial companies extremely environments are everyday followers and sources of high costs.
In July 2013, a GIEBEL Adsorber® was mounted on a hydraulic unit in a German wheel rolling mill, together with a 600l fresh oil filling.
During a 4-month observation period, the oil was checked monthly for contamination and, in particular water content in a laboratory. During this time the hydraulic unit was used unchanged and operated continuously. It was exposed to the usual influence conditions in a rolling mill without restrictions.
The result speaks for itself: No water in the oil! The amount of water absorbed was unchanged over the entire period and the oil quality was on fresh oil level! However, the previous year's figures, without GIEBEL Adsorber®, point out a significant difference.
Article as pdf-file