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In one of many world’s largest oil and fuel 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 fuel. From water bottles to the insulation in our houses, pure gasoline is a key ingredient in nearly every product we use every day. According to เกจวัดแรงดัน1บาร์ issued by the International Gas Union (IGU) in 2019, the global demand in gas has been rising by 35% of the past decade alone.
The reasons for this development are manifold, but the IGU determines three primary elements. First, the price competitiveness of gas in distinction to other power sources. Secondly, larger safety of provide with regard to infrastructure, supply, and versatile use. Thirdly, gasoline represents a sustainable form of energy 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 gasoline should be extracted utilizing a sustainable process. One of the largest methods is the Åsgard oil and gas area on the Haltenbanken, 200 km off the coast of Norway. It accommodates fifty two wells mixed in sixteen gas fields and related by 300 km of oil pipelines. As of December 2018, the sphere has estimated sources of 9.9 million standard cubic meters of oil equivalent of oil and 51.1 million commonplace cubic meters of oil equivalent of fuel.
The system used contains 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 on the planet Aker Solutions ASA has been supporting the Åsgard gasoline subject with varied fuel area merchandise, systems, and companies since 2010. In time, the pressure within the storage facility in gas-producing fields drops. Compressors are needed to maintain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard to be able to increase the output to 306 million barrels. These are normally put in on platforms above sea stage.
However, Åsgard is predicated on an underwater system. By utilizing compressors on the seabed the restoration charges are improved and the funding and working costs are lowered. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for 2 similar units 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 a 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, backside consumption pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the world of software, the motors could be manufactured from forged iron, bronze or totally different sort 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 special cooling technology. In designs with inside everlasting magnet motor know-how, or IPM for short, these maintenance-free motors can obtain impressive outputs, efficiencies and, consequently, price financial savings.
The efficient and measurable motor cooling system retains the interior temp- erature as low as possible. 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 supply is mounted on the decrease 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 is a fixed circulate of cooling liquid in the best path.
This liquid moves via the within of the motor from the bottom to the top. The specifically developed cooling channels outline the precise path over all heat sources to discharge the warmth successfully and systematically. At the highest end, the heat from the liquid is then discharged via the motor’s outer wall. Here, it’s transferred by way of the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a part of the underwater compressor system, however they’re additionally an extremely essential half. The entire underwater station cannot function with out 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 types the condensate unit together with the pump and conveys these liquids which are eliminated by the separator upstream of the gas compressors.
In 2017, as a result of a failure in a half of the system which was not equipped by ANDRITZ, the motor was sent in for repairs, throughout which an extensive research was conducted. Thermal distribution within the cooling circulate and the new spots were analyzed in additional element. The outcomes also led to the design of a brand 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 model new rotor. This study and the implementation of its findings not only benefit the current customer and future prospects in this case, but additionally strengthen confidence within the ANDRITZ submersible motor technology.