Andritz’s submersible motor expertise success

In one of the world’s largest oil and gasoline fields, the firstever underwater compressor system employs ANDRITZ submersible motors. With their renewable winding these maintenance-free designed pumps have achieved impressive results.
We are surrounded by gasoline. From water bottles to the insulation in our homes, natural fuel is a key ingredient in virtually every product we use daily. According to the most recent 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 causes for this trend are manifold, however the IGU determines three main elements. First, the fee competitiveness of gas in distinction to different energy sources. Secondly, higher safety of supply with regard to infrastructure, supply, and versatile use. Thirdly, gasoline represents a sustainable type of vitality that can mitigate local weather change and lower localized air pollution. It has 50% fewer CO2 emissions in comparison with coal, for example.
In order to satisfy this rising demand and use, the eco-friendly potential gasoline will have to be extracted utilizing a sustainable course of. One of the biggest methods is the Åsgard oil and gasoline field on the Haltenbanken, 200 km off the coast of Norway. It contains fifty two wells mixed in sixteen gasoline fields and linked by 300 km of oil pipelines. As of December 2018, the sphere has estimated resources of 9.9 million commonplace cubic meters of oil equivalent of oil and 51.1 million standard cubic meters of oil equivalent of fuel.
The system used comprises three important areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there completely since extraction started in 1999. ตัววัดแรงดัน is a floating, semi-submersible fuel and condensate processing platform for processing and stabilizing of fuel 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 in the world Aker Solutions ASA has been supporting the Åsgard gas area with various gas field merchandise, methods, and services since 2010. In time, the stress in the storage facility in gas-producing fields drops. Compressors are needed to sustain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard so as to improve the output to 306 million barrels. These are usually installed on platforms above sea stage.
However, Åsgard relies on an underwater system. By using compressors on the seabed the restoration charges are improved and the investment and working costs are reduced. In addition, underwater compression leaves a smaller ecological footprint and is more dependable than a platform. The Åsgard system consists of modules for two similar units of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, however important
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, became 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 suitable for driving deep properly pumps, backside consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of utility, the motors may be made of cast iron, bronze or totally different type of stainless steel and put in either 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 special cooling expertise. In designs with interior everlasting magnet motor technology, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, consequently, price savings.
The efficient and measurable motor cooling system keeps the inside temp- erature as low as potential. 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 supply is mounted on the decrease shaft end of the rotor. One of its two major tasks is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there’s a fixed circulate of cooling liquid in the proper course.
This liquid moves through the inside of the motor from the underside to the highest. The specially developed cooling channels define the precise path over all warmth sources to discharge the warmth successfully and systematically. At the top finish, the warmth from the liquid is then discharged through the motor’s outer wall. Here, it’s transferred through the floor of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a part of the underwater compressor system, but they are also an extremely essential part. The whole underwater station cannot function without these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been operating 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 these liquids which are eliminated by the separator upstream of the gas compressors.
In 2017, as a result of a failure in a part of the system which was not equipped by ANDRITZ, the motor was despatched in for repairs, throughout which an in depth examine was conducted. Thermal distribution in the cooling move and the recent spots had been analyzed in more detail. The results additionally led to the design of a new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was also fully overhauled and fitted with a model new winding and a new rotor. This examine and the implementation of its findings not solely profit the present buyer and future customers on this case, but additionally strengthen confidence within the ANDRITZ submersible motor expertise.
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