Andritz’s submersible motor technology success

In one of the world’s largest oil and gas 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 fuel. From water bottles to the insulation in our houses, natural gasoline is a key ingredient in nearly every product we use every day. According to the most recent report issued by the International Gas Union (IGU) in 2019, the worldwide demand in fuel has been rising by 35% of the previous decade alone.
The causes for this pattern are manifold, but the IGU determines three major factors. First, the price competitiveness of fuel in distinction to different power sources. Secondly, higher security of supply with regard to infrastructure, supply, and flexible use. Thirdly, gasoline represents a sustainable type of energy that may mitigate local weather change and lower localized pollution. It has 50% fewer CO2 emissions compared to coal, for example.
In order to fulfill this rising demand and use, the eco-friendly potential fuel will have to be extracted using a sustainable process. One of the biggest systems is the Åsgard oil and fuel field on the Haltenbanken, 200 km off the coast of Norway. It incorporates 52 wells mixed in sixteen gasoline fields and related by 300 km of oil pipelines. As of December 2018, the field 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 equal of gas.
The system used comprises three essential areas: Åsgard A, B, and C. Åsgard A is a floating oil manufacturing vessel that has been anchored there completely since extraction started in 1999. Åsgard B is a floating, semi-submersible fuel and condensate processing platform for processing and stabilizing of gas 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 advanced to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard gas area with numerous gasoline area merchandise, techniques, and providers since 2010. In time, the pressure 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. เกจ์วัดความดัน are normally put in on platforms above sea degree.
However, Åsgard relies on an underwater system. By using compressors on the seabed the restoration rates are improved and the investment and working prices 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 2 equivalent 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 a half 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, bottom consumption pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the realm of utility, the motors can be made of cast iron, bronze or 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 know-how. In designs with inside everlasting magnet motor know-how, or IPM for short, these maintenance-free motors can obtain impressive outputs, efficiencies and, as a result, price financial savings.
The effective and measurable motor cooling system keeps the inside temp- erature as low as possible. 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 delivery is mounted at the decrease shaft end of the rotor. One of its two major tasks is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there’s a fixed move of cooling liquid in the right direction.
This liquid moves by way of the within of the motor from the underside to the highest. The specifically developed cooling channels define the exact path over all warmth sources to discharge the warmth successfully and systematically. At the top finish, the warmth from the liquid is then discharged by way of 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 only a tiny a part of the underwater compressor system, but they’re also an extremely essential half. 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 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 together with the pump and conveys those liquids which are removed by the separator upstream of the fuel compressors.
In 2017, because of a failure in part of the system which was not provided by ANDRITZ, the motor was despatched in for repairs, during which an intensive research was performed. Thermal distribution within the cooling flow and the recent spots have been 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 new winding and a model new rotor. This research and the implementation of its findings not only benefit the current buyer and future customers on this case, but also strengthen confidence in the ANDRITZ submersible motor technology.
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