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 impressive results.
We are surrounded by gasoline. From water bottles to the insulation in our homes, pure fuel is a key ingredient in virtually each product we use every day. 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 past decade alone.
The reasons for this development are manifold, but the IGU determines three primary factors. First, the fee competitiveness of fuel in distinction to different vitality sources. Secondly, greater security of provide with regard to infrastructure, delivery, and versatile use. Thirdly, fuel represents a sustainable form of energy that may mitigate local weather change and decrease localized pollution. It has 50% fewer CO2 emissions compared to coal, for instance.
In order to meet this growing demand and use, the eco-friendly potential gas must be extracted using a sustainable process. One of the largest systems is the Åsgard oil and fuel area on the Haltenbanken, 200 km off the coast of Norway. It contains 52 wells combined in sixteen fuel fields and related by 300 km of oil pipelines. As of เกจวัดความดันน้ำ , the sphere has estimated sources of 9.9 million standard cubic meters of oil equal of oil and 51.1 million standard cubic meters of oil equivalent of gas.
The system used contains three important areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there completely since extraction started in 1999. Åsgard B is a floating, semi-submersible fuel and condensate processing platform for processing and stabilizing of gas 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 field with varied gas subject products, systems, and providers since 2010. In time, the pressure 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 in order to enhance 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 reduced. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for two equivalent units of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, however important
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, became 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, backside consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on ที่วัดแรงดัน of application, the motors could be made from forged iron, bronze or totally different type of stainless-steel and installed 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 interior everlasting magnet motor know-how, or IPM for short, these maintenance-free motors can achieve impressive outputs, efficiencies and, in consequence, cost savings.
The efficient and measurable motor cooling system keeps the inside temp- erature as little 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 delivery is mounted on the decrease shaft end of the rotor. One of its two primary duties is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there is a constant move of cooling liquid in the best direction.
This liquid moves through the inside of the motor from the underside to the highest. The specifically developed cooling channels define the exact path over all heat sources to discharge the heat successfully and systematically. At the highest finish, the heat from the liquid is then discharged through the motor’s outer wall. Here, it is transferred by way of the floor of the motor to the medium to be pumped.
The ANDRITZ submersible motors are only a tiny a part of the underwater compressor system, however they’re also an especially essential half. The complete underwater station can not function with out 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 varieties the condensate unit along with the pump and conveys these liquids that are removed by the separator upstream of the gasoline compressors.
In 2017, as a outcome of a failure in a part of the system which was not equipped by ANDRITZ, the motor was sent in for repairs, during which an intensive research was performed. Thermal distribution within the cooling move and the recent spots were analyzed in additional 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 model new winding and a model new rotor. This study and the implementation of its findings not solely profit the present buyer and future customers on this case, but in addition strengthen confidence in the ANDRITZ submersible motor technology.
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