Andritz’s submersible motor expertise success

In one of the world’s largest oil and fuel fields, the firstever underwater compressor system employs ANDRITZ submersible motors. With their renewable winding these maintenance-free designed pumps have achieved spectacular results.
We are surrounded by gas. From water bottles to the insulation in our properties, pure gasoline is a key ingredient in just about every product we use daily. According to the most recent report issued by the International Gas Union (IGU) in 2019, the global 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 primary components. First, the cost competitiveness of gasoline in contrast to other vitality sources. Secondly, เพรสเชอร์เกจน้ำ of supply with regard to infrastructure, supply, and versatile use. Thirdly, fuel represents a sustainable type of vitality that may mitigate local weather change and lower localized air 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 gasoline should be extracted using a sustainable course of. One of the largest systems is the Åsgard oil and gasoline area on the Haltenbanken, 200 km off the coast of Norway. It contains fifty two wells combined in 16 gasoline fields and linked by 300 km of oil pipelines. As of December 2018, the sphere has estimated assets of 9.9 million normal cubic meters of oil equivalent of oil and 51.1 million commonplace cubic meters of oil equal of gasoline.
The system used includes three important areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there permanently 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 in the world Aker Solutions ASA has been supporting the Åsgard fuel subject with varied gasoline subject products, systems, and companies since 2010. In time, the pressure within 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 enhance the output to 306 million barrels. These are usually put in on platforms above sea degree.
However, Åsgard is predicated on an underwater system. By utilizing compressors on the seabed the recovery charges are improved and the investment and operating prices are reduced. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for two similar units 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, 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 well pumps, backside intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the realm of software, the motors could be manufactured from forged iron, bronze or totally different type of stainless-steel and installed 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 technology, or IPM for short, these maintenance-free motors can achieve spectacular outputs, efficiencies and, consequently, value savings.
The effective and measurable motor cooling system retains the interior temp- erature as little as attainable. Drinking water is used as a cooling liquid, which is why the motors can operate in media of as a lot as 75° C. An impeller with optimized suction and supply is mounted at the lower shaft end of the rotor. One of its two main duties is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there’s a constant move of cooling liquid in the best direction.
This liquid moves through the within of the motor from the underside to the highest. The specially developed cooling channels define the exact path over all heat sources to discharge the heat effectively and systematically. At the highest finish, the warmth from the liquid is then discharged by way of the motor’s outer wall. Here, it is transferred through the surface 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 a particularly essential part. The whole underwater station cannot function without these motors to drive the pumps. Since first being put in 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 together with the pump and conveys these liquids which are eliminated by the separator upstream of the gasoline compressors.
In 2017, as a result of a failure in a part of the system which was not provided by ANDRITZ, the motor was despatched in for repairs, throughout which an extensive study was conducted. Thermal distribution in the cooling circulate and the hot spots had been analyzed in additional detail. The results additionally led to the design of a model new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally utterly overhauled and fitted with a model new winding and a new rotor. This research and the implementation of its findings not only benefit the current customer and future prospects in this case, but additionally strengthen confidence in the ANDRITZ submersible motor expertise.

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