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 spectacular outcomes.
We are surrounded by gas. From water bottles to the insulation in our properties, pure fuel is a key ingredient in virtually each product we use day by day. 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 previous decade alone.
The reasons for this development are manifold, however the IGU determines three main factors. First, the cost competitiveness of gas in distinction to different power sources. Secondly, higher security of provide with regard to infrastructure, supply, and versatile use. Thirdly, gasoline represents a sustainable type of power that can mitigate climate change and lower localized 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 gas must be extracted using a sustainable course of. เกจวัดแรงดันแบบแห้ง of the largest systems is the Åsgard oil and fuel area on the Haltenbanken, 200 km off the coast of Norway. It accommodates fifty two wells combined in sixteen gas fields and connected by 300 km of oil pipelines. As of December 2018, the sector has estimated assets of 9.9 million standard cubic meters of oil equivalent of oil and fifty one.1 million standard cubic meters of oil equal of gas.
The system used contains 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 gasoline pipeline to the Karsto processing complex to the north of Stavanger, Norway.
First on the planet Aker Solutions ASA has been supporting the Åsgard gasoline subject with numerous fuel subject products, techniques, and services 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 to find a way to increase the output to 306 million barrels. These are usually installed on platforms above sea stage.
However, Åsgard relies on an underwater system. By utilizing compressors on the seabed the restoration charges are improved and the investment and working 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 2 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, became 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 suitable for driving deep properly pumps, bottom intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of application, the motors may be made of cast iron, bronze or different kind of chrome 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 technology. In designs with interior permanent magnet motor expertise, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, as a result, price savings.
The effective and measurable motor cooling system retains 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 as a lot as 75° C. An impeller with optimized suction and delivery is mounted on the decrease shaft finish of the rotor. One of its two primary tasks 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 right direction.
This liquid strikes via the within of the motor from the bottom to the highest. The specifically developed cooling channels define the exact path over all warmth sources to discharge the heat successfully and systematically. At the highest finish, the warmth from the liquid is then discharged through 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’re also a particularly necessary half. The whole underwater station can’t operate without these motors to drive the pumps. Since first being installed 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 types the condensate unit along with the pump and conveys those liquids that are eliminated by the separator upstream of the gas compressors.
In 2017, due to a failure in part of the system which was not supplied by ANDRITZ, the motor was despatched in for repairs, throughout which an in depth examine was conducted. Thermal distribution within the cooling flow and the recent spots had been analyzed in additional element. The results 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 research and the implementation of its findings not solely profit the current buyer and future customers in this case, but additionally strengthen confidence within the ANDRITZ submersible motor expertise.
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