Andritz’s submersible motor know-how 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 impressive results.
We are surrounded by gasoline. From water bottles to the insulation in our properties, natural gasoline is a key ingredient in nearly every product we use daily. According to the latest 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 causes for this pattern are manifold, however the IGU determines three primary factors. First, the cost competitiveness of gasoline in distinction to other energy sources. Secondly, greater safety of provide with regard to infrastructure, supply, and flexible use. Thirdly, gasoline represents a sustainable form of energy that may mitigate local weather change and decrease localized pollution. It has 50% fewer CO2 emissions in comparability with coal, for example.
In order to fulfill this growing demand and use, the eco-friendly potential gasoline should be extracted utilizing a sustainable process. One of the most important systems is the Åsgard oil and gas subject on the Haltenbanken, 200 km off the coast of Norway. It contains 52 wells mixed in 16 fuel fields and linked by 300 km of oil pipelines. As of December 2018, the sphere has estimated sources of 9.9 million commonplace cubic meters of oil equivalent of oil and fifty one.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 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 complicated to the north of Stavanger, Norway.
First on the planet Aker Solutions ASA has been supporting the Åsgard gas area with varied fuel area merchandise, systems, and providers 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 improve the output to 306 million barrels. These are usually installed on platforms above sea level.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the restoration charges are improved and the investment and working costs are lowered. In addition, underwater compression leaves a smaller ecological footprint and is more reliable than a platform. The Åsgard system consists of modules for two similar sets of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, but important

In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, turned ANDRITZ Ritz GmbH and a half of the ANDRITZ Group, as did the production of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep properly pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the world of application, the motors may be made of forged iron, bronze or totally different sort of stainless 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 particular cooling expertise. In เกจวัดแก๊ส with inside permanent magnet motor know-how, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, as a result, price financial savings.
The efficient 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 function in media of as a lot as 75° C. An impeller with optimized suction and delivery is mounted at the decrease 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 is a fixed flow of cooling liquid in the right direction.
This liquid strikes through the inside of the motor from the underside to the top. The specially developed cooling channels define the precise path over all heat sources to discharge the heat successfully and systematically. At the top end, the warmth from the liquid is then discharged by way of the motor’s outer wall. Here, it is transferred via the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a half of the underwater compressor system, but they are also an especially important half. The complete underwater station can not function without these motors to drive the pumps. Since first being put in in 2016, these submersible motors have been operating with none 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 are removed by the separator upstream of the gasoline compressors.
In 2017, because of a failure in a part of the system which was not supplied by ANDRITZ, the motor was sent in for repairs, throughout which an intensive research was carried out. Thermal distribution in the cooling flow and the new spots were analyzed in more element. The outcomes also led to the design of a model new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was also fully overhauled and fitted with a new winding and a new rotor. This research and the implementation of its findings not solely benefit the present buyer and future customers on this case, but in addition strengthen confidence in the ANDRITZ submersible motor know-how.
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