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 results.
We are surrounded by gas. From water bottles to the insulation in our properties, pure gas is a key ingredient in nearly each product we use every day. According to the latest 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, however the IGU determines three major elements. First, the price competitiveness of fuel in contrast to other power sources. Secondly, larger safety of supply with regard to infrastructure, delivery, and flexible use. Thirdly, gasoline represents a sustainable form of energy that can mitigate local weather change and lower localized air pollution. It has 50% fewer CO2 emissions in comparison with coal, for example.
In order to meet this growing demand and use, the eco-friendly potential fuel should be extracted utilizing a sustainable course of. One of the most important techniques is the Åsgard oil and fuel area on the Haltenbanken, 200 km off the coast of Norway. It contains fifty two wells combined in 16 gas fields and linked by 300 km of oil pipelines. As of December 2018, the sector has estimated resources of 9.9 million normal cubic meters of oil equal of oil and 51.1 million commonplace cubic meters of oil equivalent of fuel.
The system used includes 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 gasoline and condensate processing platform for processing and stabilizing of fuel 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 complicated to the north of Stavanger, Norway.
First on the planet Aker Solutions ASA has been supporting the Åsgard fuel field with numerous gasoline field merchandise, methods, and services since 2010. In time, the pressure 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 increase the output to 306 million barrels. These are usually installed on platforms above sea stage.
However, Åsgard is based on an underwater system. By using compressors on the seabed the restoration rates are improved and the funding and operating prices are decreased. In เกจวัดแรงดันดิจิตอล , underwater compression leaves a smaller ecological footprint and is more reliable than a platform. The Åsgard system consists of modules for 2 equivalent units of compressors, pumps, scrubbers, and coolers. The motors wanted 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 a 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 well pumps, bottom intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the world of application, the motors can be manufactured from forged iron, bronze or completely different kind 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 technology. In designs with interior permanent magnet motor know-how, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, consequently, value savings.
The efficient and measurable motor cooling system retains the interior temp- erature as little as potential. Drinking water is used as a cooling liquid, which is why the motors can function in media of up to 75° C. An impeller with optimized suction and delivery is mounted at the lower shaft end 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’s a constant flow of cooling liquid in the right path.
This liquid strikes through the inside of the motor from the bottom to the top. The specifically developed cooling channels outline the exact path over all heat sources to discharge the heat successfully and systematically. At the top finish, the heat from the liquid is then discharged by way of the motor’s outer wall. Here, it is transferred by way of the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are only a tiny a half of the underwater compressor system, however they’re also an extremely essential half. The complete 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 forms the condensate unit along with the pump and conveys these liquids which might be removed by the separator upstream of the gasoline compressors.
In 2017, because of a failure in part of the system which was not supplied by ANDRITZ, the motor was despatched in for repairs, throughout which an extensive research was carried out. Thermal distribution in the cooling move and the recent spots have been analyzed in additional element. 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 completely overhauled and fitted with a new winding and a model new rotor. This study and the implementation of its findings not solely profit the present customer and future prospects in this case, but in addition strengthen confidence within the ANDRITZ submersible motor technology.
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