Andritz’s submersible motor expertise 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 gasoline. From water bottles to the insulation in our houses, natural gasoline is a key ingredient in just about each product we use daily. 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 past decade alone.
The causes for this pattern are manifold, however the IGU determines three main factors. First, the fee competitiveness of gasoline in contrast to different energy sources. Secondly, higher security of supply with regard to infrastructure, delivery, and versatile use. Thirdly, fuel represents a sustainable form of power that can mitigate local weather change and decrease localized pollution. It has 50% fewer CO2 emissions in comparison with coal, for instance.
In order to fulfill this growing demand and use, the eco-friendly potential gas must be extracted using a sustainable process. One of the largest techniques is the Åsgard oil and gasoline subject on the Haltenbanken, 200 km off the coast of Norway. It contains 52 wells combined in 16 gasoline fields and related by 300 km of oil pipelines. As of December 2018, the field has estimated resources of 9.9 million normal cubic meters of oil equal of oil and 51.1 million commonplace cubic meters of oil equal of gas.
The system used comprises three important 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 gas 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 fuel pipeline to the Karsto processing complicated to the north of Stavanger, Norway.
First on the planet Aker Solutions ASA has been supporting the Åsgard gas field with varied gas area products, techniques, and providers since 2010. In time, the stress 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 to find a way to enhance the output to 306 million barrels. These are usually installed on platforms above sea stage.
However, Åsgard relies on an underwater system. By using compressors on the seabed the restoration rates are improved and the funding and working prices 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 sets of compressors, pumps, scrubbers, and coolers. The motors wanted to drive the pumps come from ANDRITZ.
Small, but 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 production 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 area of utility, the motors may be made from cast iron, bronze or different type of stainless steel and put in 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 know-how. In designs with inside everlasting magnet motor technology, or IPM for short, these maintenance-free motors can obtain spectacular outputs, efficiencies and, consequently, value financial savings.
The efficient and measurable motor cooling system retains the interior temp- erature as low as attainable. 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 finish of the rotor. One of its two primary duties is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there’s a fixed circulate of cooling liquid in the proper path.
This liquid strikes via the within of the motor from the bottom to the highest. The specially developed cooling channels outline the exact path over all heat sources to discharge the heat effectively and systematically. At the top end, the warmth from the liquid is then discharged via 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 only a tiny a half of the underwater compressor system, but they’re additionally an extremely necessary half. 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 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 together with the pump and conveys those liquids which are eliminated by the separator upstream of the gasoline compressors.
In 2017, because of a failure in part of the system which was not equipped by ANDRITZ, the motor was despatched in for repairs, throughout which an extensive examine was carried out. ราคาเกจวัดแรงดันน้ำ in the cooling move and the new spots had been analyzed in more detail. 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 additionally completely overhauled and fitted with a new winding and a brand new rotor. This examine and the implementation of its findings not solely benefit the current customer and future clients in this case, but also strengthen confidence in the ANDRITZ submersible motor expertise.
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