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 spmk700 winding these maintenance-free designed pumps have achieved impressive results.
We are surrounded by fuel. From water bottles to the insulation in our homes, pure gasoline is a key ingredient in nearly each product we use daily. According to the newest report issued by the International Gas Union (IGU) in 2019, the global demand in gasoline has been rising by 35% of the past decade alone.
The reasons for this trend are manifold, however the IGU determines three major components. First, the cost competitiveness of gasoline in distinction to other vitality sources. Secondly, larger safety of provide with regard to infrastructure, supply, and flexible use. Thirdly, gas represents a sustainable form of energy that can mitigate climate change and decrease localized air pollution. It has 50% fewer CO2 emissions compared to coal, for example.
In order to satisfy this growing demand and use, the eco-friendly potential fuel will have to be extracted using a sustainable process. One of the biggest methods is the Åsgard oil and fuel field on the Haltenbanken, 200 km off the coast of Norway. It accommodates fifty two wells combined in sixteen gas fields and related by 300 km of oil pipelines. As of December 2018, the sector has estimated resources of 9.9 million standard cubic meters of oil equivalent of oil and fifty one.1 million commonplace cubic meters of oil equivalent of gasoline.
เกจวัดแรงดันออกซิเจน used includes three essential 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 gas pipeline to the Karsto processing complex to the north of Stavanger, Norway.
First in the world Aker Solutions ASA has been supporting the Åsgard gas field with various gasoline subject merchandise, systems, and services since 2010. In time, the strain in the storage facility in gas-producing fields drops. Compressors are wanted to maintain 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 stage.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the recovery charges are improved and the investment and operating prices are lowered. In addition, underwater compression leaves a smaller ecological footprint and is extra dependable than a platform. The Åsgard system consists of modules for 2 equivalent sets 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, grew to become 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 well pumps, bottom intake pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the world of utility, the motors may be manufactured from cast iron, bronze or completely different sort 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 special cooling technology. In designs with interior everlasting magnet motor know-how, or IPM for brief, these maintenance-free motors can achieve spectacular outputs, efficiencies and, as a result, cost savings.
The efficient and measurable motor cooling system keeps the interior temp- erature as little as potential. Drinking water is used as a cooling liquid, which is why the motors can operate in media of as much as 75° C. An impeller with optimized suction and delivery is mounted on the decrease shaft finish of the rotor. One of its two main duties is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there is a constant flow of cooling liquid in the best course.
This liquid strikes through the inside 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 heat effectively and systematically. At the top end, the heat from the liquid is then discharged through the motor’s outer wall. Here, it’s transferred by way of the floor of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny part of the underwater compressor system, however they’re additionally an extremely essential part. The whole underwater station can’t operate without 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 these liquids which might be eliminated by the separator upstream of the gasoline compressors.
In 2017, due to a failure in a part of the system which was not supplied by ANDRITZ, the motor was sent in for repairs, during which an extensive examine was performed. Thermal distribution within the cooling flow and the recent spots were analyzed in additional 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 only profit the present buyer and future customers in this case, but in addition strengthen confidence in the ANDRITZ submersible motor know-how.

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