Andritz’s submersible motor technology success

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 spectacular outcomes.
We are surrounded by gas. From water bottles to the insulation in our properties, pure gasoline is a key ingredient in nearly every product we use day by day. According to the latest report issued by the International Gas Union (IGU) in 2019, the worldwide demand in gas has been rising by 35% of the past decade alone.
The reasons for this trend are manifold, however the IGU determines three primary factors. First, the fee competitiveness of gas in distinction to other vitality sources. Secondly, higher security of supply with regard to infrastructure, delivery, and flexible use. Thirdly, gasoline represents a sustainable type of energy that may 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 fuel should be extracted utilizing a sustainable process. One of the biggest systems is the Åsgard oil and fuel subject on the Haltenbanken, 200 km off the coast of Norway. It incorporates 52 wells combined in 16 gasoline fields and linked by 300 km of oil pipelines. As of December 2018, the field has estimated assets of 9.9 million commonplace cubic meters of oil equivalent of oil and fifty one.1 million normal cubic meters of oil equal of gas.
The system used includes 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 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 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 gasoline subject with numerous gasoline subject merchandise, systems, and services since 2010. In time, the stress in 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 so as to improve the output to 306 million barrels. These are usually put in on platforms above sea degree.
However, Åsgard is based on an underwater system. By utilizing compressors on the seabed the recovery charges are improved and the investment and working costs are reduced. 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 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 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 nicely pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the area of software, the motors may be made of cast iron, bronze or totally different type of chrome steel and installed 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 know-how. In designs with interior everlasting magnet motor expertise, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, as a result, cost savings.
The efficient and measurable motor cooling system retains 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 as a lot as 75° C. An impeller with optimized suction and delivery is mounted on the lower 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 is a fixed move of cooling liquid in the best path.
This liquid moves through the inside of the motor from the underside 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 highest finish, the warmth from the liquid is then discharged by way of the motor’s outer wall. Here, it’s transferred by way of the surface of the motor to the medium to be pumped.
เพรสเชอร์เกจวัดแรงดันน้ำ are just a tiny a part of the underwater compressor system, but they’re additionally a particularly necessary part. 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 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 along with the pump and conveys these liquids that 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 in depth study was conducted. Thermal distribution in the cooling move and the hot spots had been analyzed in additional detail. The outcomes additionally led to the design of a model new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was also utterly overhauled and fitted with a new winding and a model new rotor. This research and the implementation of its findings not solely benefit the present customer and future clients in this case, but in addition strengthen confidence in the ANDRITZ submersible motor expertise.
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