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Andritz’s submersible motor know-how success

In one of many world’s largest oil and fuel fields, the firstever underwater compressor system employs ANDRITZ submersible motors. With เกจวัดแรงดัน250bar winding these maintenance-free designed pumps have achieved impressive results.
We are surrounded by gasoline. From water bottles to the insulation in our homes, pure gasoline is a key ingredient in just about every product we use day by day. According to the newest report issued by the International Gas Union (IGU) in 2019, the worldwide demand in gas has been rising by 35% of the past decade alone.
The reasons for this development are manifold, but the IGU determines three major elements. First, the cost competitiveness of gasoline in contrast to other power sources. Secondly, greater security of provide with regard to infrastructure, supply, and versatile use. Thirdly, gasoline represents a sustainable form of power that may mitigate climate change and decrease localized air pollution. It has 50% fewer CO2 emissions compared to coal, for instance.
In order to satisfy this growing demand and use, the eco-friendly potential fuel should be extracted using a sustainable course of. One of the biggest systems is the Åsgard oil and gasoline subject on the Haltenbanken, 200 km off the coast of Norway. It incorporates 52 wells combined in 16 gas fields and connected by 300 km of oil pipelines. As of December 2018, the sector has estimated resources of 9.9 million commonplace cubic meters of oil equivalent of oil and fifty one.1 million standard cubic meters of oil equivalent of fuel.
The system used comprises three essential areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there completely since extraction began in 1999. Åsgard B is a floating, semi-submersible gasoline and condensate processing platform for processing and stabilizing of gasoline and condensate. This platform is supplemented by the condensate storage facility Åsgard C and the 707 km-long Åsgard fuel pipeline to the Karsto processing complicated to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard fuel subject with various gas area products, techniques, and companies since 2010. In time, the strain within the storage facility in gas-producing fields drops. Compressors are wanted to sustain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard to be able to increase the output to 306 million barrels. These are usually put in on platforms above sea level.
However, Åsgard is based on an underwater system. By using compressors on the seabed the restoration rates are improved and the funding and working prices are lowered. In addition, underwater compression leaves a smaller ecological footprint and is extra dependable than a platform. The Åsgard system consists of modules for two identical sets of compressors, pumps, scrubbers, and coolers. The motors wanted to drive the pumps come from ANDRITZ.
Small, however essential
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, turned ANDRITZ Ritz GmbH and part of the ANDRITZ Group, as did the production of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep well pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of software, the motors can be made from forged iron, bronze or completely different type of stainless steel and put in both vertically or horizontally. These are water-filled and watercooled, three-phase asynchronous motors with squirrel cages and a mech- anical seal. They are fitted with MCT, a particular cooling know-how. In designs with interior permanent magnet motor expertise, or IPM for short, these maintenance-free motors can achieve impressive outputs, efficiencies and, as a result, price financial savings.
The efficient and measurable motor cooling system retains the inside temp- erature as little as attainable. Drinking water is used as a cooling liquid, which is why the motors can function in media of up to 75° C. An impeller with optimized suction and delivery is mounted at the lower shaft end of the rotor. One of its two primary duties is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there is a fixed move of cooling liquid in the right course.
This liquid strikes through the within of the motor from the bottom to the highest. The specifically developed cooling channels define the precise path over all warmth sources to discharge the heat effectively and systematically. At the highest end, the warmth from the liquid is then discharged via the motor’s outer wall. Here, it is transferred via the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny part of the underwater compressor system, but they’re also an especially important half. The entire underwater station cannot operate without these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been working with none faults. All in all, ANDRITZ Ritz delivered three twopole submersible motors with an output of 736 kw. The motor types the condensate unit along with the pump and conveys those liquids which are eliminated by the separator upstream of the gas compressors.
In 2017, because of a failure in a part of the system which was not supplied by ANDRITZ, the motor was sent in for repairs, throughout which an in depth examine was conducted. Thermal distribution within the cooling move and the new spots have been analyzed in more detail. The results also led to the design of a model new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally fully overhauled and fitted with a model new winding and a new rotor. This examine and the implementation of its findings not only profit the current customer and future clients in this case, but also strengthen confidence within the ANDRITZ submersible motor expertise.