Andritz’s submersible motor technology 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 spectacular outcomes.
We are surrounded by gasoline. From water bottles to the insulation in our homes, natural gas is a key ingredient in virtually every product we use day by day. According to the most recent report issued by the International Gas Union (IGU) in 2019, the global demand in gas has been rising by 35% of the past decade alone.
The reasons for this trend are manifold, however the IGU determines three primary elements. First, the fee competitiveness of fuel in contrast to other power sources. Secondly, higher security of supply with regard to infrastructure, delivery, and versatile use. Thirdly, gasoline represents a sustainable form of power that may mitigate local weather change and decrease localized pollution. It has 50% fewer CO2 emissions in comparison with coal, for instance.
In order to satisfy this rising demand and use, the eco-friendly potential gasoline should be extracted using a sustainable course of. One of the largest methods is the Åsgard oil and gasoline field on the Haltenbanken, 200 km off the coast of Norway. It incorporates 52 wells combined in sixteen gasoline fields and connected by 300 km of oil pipelines. As of December 2018, the field has estimated sources of 9.9 million normal cubic meters of oil equivalent of oil and fifty one.1 million standard cubic meters of oil equal of fuel.
เกจวัดแรงดันแบบแห้ง used comprises three essential areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there permanently since extraction started in 1999. Åsgard B is a floating, semi-submersible gas 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 gas pipeline to the Karsto processing advanced to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard gasoline area with numerous gasoline subject merchandise, techniques, and providers since 2010. In time, the stress 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 so as to increase the output to 306 million barrels. These are usually installed on platforms above sea degree.
However, Åsgard relies on an underwater system. By using compressors on the seabed the recovery charges are improved and the investment and working prices are reduced. In addition, underwater compression leaves a smaller ecological footprint and is more reliable than a platform. The Åsgard system consists of modules for two identical 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, turned ANDRITZ Ritz GmbH and a part of the ANDRITZ Group, as did the manufacturing 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 machinery.
Depending on the world of software, the motors can be made of cast iron, bronze or completely different sort of chrome 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 technology. In designs with interior everlasting magnet motor expertise, or IPM for short, these maintenance-free motors can achieve spectacular outputs, efficiencies and, as a result, price savings.
The efficient and measurable motor cooling system keeps the inside temp- erature as low as attainable. Drinking water is used as a cooling liquid, which is why the motors can function in media of as a lot as 75° C. An impeller with optimized suction and supply is mounted on the lower shaft finish of the rotor. One of its two primary duties is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there is a fixed flow of cooling liquid in the proper direction.
This liquid moves via the inside of the motor from the bottom to the top. The specially developed cooling channels outline the precise path over all heat sources to discharge the warmth effectively and systematically. At the highest finish, the heat from the liquid is then discharged via the motor’s outer wall. Here, it’s transferred via the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are only a tiny a part of the underwater compressor system, but they are also a particularly necessary part. The whole underwater station cannot function with out these motors to drive the pumps. Since first being put in in 2016, these submersible motors have been operating without any faults. All in all, ANDRITZ Ritz delivered three twopole submersible motors with an output of 736 kw. The motor varieties the condensate unit together with the pump and conveys those liquids that are removed by the separator upstream of the gasoline compressors.
In 2017, as a end result of a failure in part of the system which was not provided by ANDRITZ, the motor was sent in for repairs, throughout which an in depth examine was conducted. Thermal distribution within the cooling circulate and the recent spots were analyzed in more element. The results also led to the design of a new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was also utterly overhauled and fitted with a model new winding and a brand new rotor. This study and the implementation of its findings not solely benefit the current buyer and future prospects on this case, but in addition strengthen confidence within the ANDRITZ submersible motor expertise.
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