Andritz’s submersible motor technology success

In one of many 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 outcomes.
We are surrounded by gasoline. From water bottles to the insulation in our houses, pure fuel is a key ingredient in just about each product we use day by day. According to the latest 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 causes for this pattern are manifold, however the IGU determines three major components. First, the cost competitiveness of gasoline in contrast to other energy sources. Secondly, greater security of provide with regard to infrastructure, supply, and versatile use. Thirdly, ราคาเกจวัดแรงดัน represents a sustainable type of vitality that may mitigate climate change and decrease localized pollution. It has 50% fewer CO2 emissions compared to coal, for example.
In order to meet this growing demand and use, the eco-friendly potential gas should be extracted using a sustainable process. One of the biggest methods is the Åsgard oil and gasoline area on the Haltenbanken, 200 km off the coast of Norway. It contains 52 wells combined in sixteen gasoline fields and connected by 300 km of oil pipelines. As of December 2018, the sphere has estimated sources of 9.9 million standard cubic meters of oil equivalent of oil and 51.1 million commonplace cubic meters of oil equivalent of gasoline.
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 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 gasoline pipeline to the Karsto processing complex to the north of Stavanger, Norway.
First in the world Aker Solutions ASA has been supporting the Åsgard fuel field with various gasoline field merchandise, systems, and services since 2010. In time, the pressure in the storage facility in gas-producing fields drops. Compressors are needed to maintain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard to find a way to improve the output to 306 million barrels. These are normally put in on platforms above sea degree.
However, Åsgard is based on an underwater system. By utilizing compressors on the seabed the recovery rates are improved and the investment and working costs are decreased. In addition, underwater compression leaves a smaller ecological footprint and is more reliable than a platform. The Åsgard system consists of modules for 2 similar units of compressors, pumps, scrubbers, and coolers. The motors needed 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 manufacturing of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep nicely pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the world of software, the motors may be manufactured from cast iron, bronze or different kind of stainless-steel and installed 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 particular cooling know-how. In designs with inside everlasting magnet motor technology, or IPM for brief, these maintenance-free motors can achieve spectacular outputs, efficiencies and, consequently, value financial savings.
The effective 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 operate in media of up to 75° C. An impeller with optimized suction and delivery is mounted on the decrease shaft finish of the rotor. One of its two main tasks is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there’s a fixed flow of cooling liquid in the proper direction.
This liquid moves through the inside of the motor from the bottom to the highest. The specially developed cooling channels outline the precise path over all warmth sources to discharge the heat effectively and systematically. At the top finish, the warmth from the liquid is then discharged via the motor’s outer wall. Here, it is transferred via the floor of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a half of the underwater compressor system, but they’re additionally a particularly necessary part. The complete underwater station can’t operate without these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been working 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 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 despatched in for repairs, throughout which an extensive examine was performed. Thermal distribution in the cooling circulate and the new spots were analyzed in additional element. The outcomes also led to the design of a brand new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally fully overhauled and fitted with a new winding and a model new rotor. This examine and the implementation of its findings not only benefit the present customer and future clients in this case, but additionally strengthen confidence in the ANDRITZ submersible motor know-how.
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