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In one of many 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, pure gasoline is a key ingredient in just about every product we use daily. 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 past decade alone.
The causes for this pattern are manifold, however the IGU determines three major components. First, the cost competitiveness of fuel in contrast to different power sources. Secondly, higher safety of provide with regard to infrastructure, delivery, and flexible use. Thirdly, gas represents a sustainable type of power that can mitigate climate change and lower localized pollution. It has 50% fewer CO2 emissions in comparison with coal, for instance.
In order to satisfy this rising demand and use, the eco-friendly potential fuel will have to be extracted utilizing a sustainable course of. One of the most important techniques is the Åsgard oil and fuel field on the Haltenbanken, 200 km off the coast of Norway. It incorporates fifty two wells mixed in sixteen gasoline fields and connected by 300 km of oil pipelines. As of December 2018, the sector has estimated assets of 9.9 million normal cubic meters of oil equal of oil and 51.1 million commonplace cubic meters of oil equal of gasoline.
The system used contains three essential areas: Åsgard A, B, and C. Åsgard A is a floating oil manufacturing vessel that has been anchored there permanently since extraction started in 1999. Åsgard B is a floating, semi-submersible gas 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 fuel pipeline to the Karsto processing complicated to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard fuel area with various gasoline area merchandise, methods, and companies 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 increase the output to 306 million barrels. These are normally installed on platforms above sea level.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the restoration rates are improved and the funding and operating prices are lowered. In addition, underwater compression leaves a smaller ecological footprint and is extra dependable than a platform. The Åsgard system consists of modules for two identical units of compressors, pumps, scrubbers, and coolers. The motors wanted to drive the pumps come from ANDRITZ.
Small, but essential
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 suitable for driving deep well pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of software, the motors could be made of forged iron, bronze or different kind 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 special cooling expertise. In designs with interior everlasting magnet motor expertise, or IPM for short, these maintenance-free motors can obtain spectacular outputs, efficiencies and, in consequence, price savings.
The efficient and measurable motor cooling system keeps the inside temp- erature as low as possible. Drinking water is used as a cooling liquid, which is why the motors can operate in media of up to 75° C. An impeller with optimized suction and delivery is mounted on the decrease shaft end 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 is a fixed move of cooling liquid in the right path.
This liquid strikes by way of the inside of the motor from the underside to the highest. The specifically developed cooling channels outline the exact path over all warmth sources to discharge the warmth successfully and systematically. At the top finish, 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 just a tiny a part of the underwater compressor system, but they are additionally an extremely important half. The complete underwater station can not function with out these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been working without any faults. เกจวัดแรงดันไนโตรเจน 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 removed by the separator upstream of the fuel compressors.
In 2017, due to a failure in part of the system which was not equipped by ANDRITZ, the motor was despatched in for repairs, during which an extensive research was conducted. Thermal distribution in the cooling circulate and the recent spots have been analyzed in more element. The results additionally led to the design of a model 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 model new rotor. This study and the implementation of its findings not solely benefit the current buyer and future clients on this case, but additionally strengthen confidence within the ANDRITZ submersible motor expertise.
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