Andritz’s submersible motor technology success

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 spectacular results.
We are surrounded by fuel. From water bottles to the insulation in our houses, natural gas is a key ingredient in virtually each product we use daily. According to the most recent report issued by the International Gas Union (IGU) in 2019, the worldwide demand in gasoline has been rising by 35% of the previous decade alone.
The reasons for this trend are manifold, however the IGU determines three primary factors. First, the price competitiveness of gasoline in distinction to other power sources. Secondly, greater security of supply with regard to infrastructure, supply, and flexible use. Thirdly, เกจปรับแรงดันแก๊ส represents a sustainable form of power that may mitigate local weather change and decrease localized air pollution. It has 50% fewer CO2 emissions in comparability with coal, for instance.
In order to fulfill this rising demand and use, the eco-friendly potential fuel should be extracted utilizing a sustainable course of. One of the most important systems is the Åsgard oil and fuel subject on the Haltenbanken, 200 km off the coast of Norway. It contains fifty two wells mixed in 16 fuel fields and connected by 300 km of oil pipelines. As of December 2018, the sector has estimated sources of 9.9 million standard cubic meters of oil equal of oil and fifty one.1 million normal cubic meters of oil equivalent of fuel.
The system used comprises three important 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 fuel pipeline to the Karsto processing complex to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard gasoline area with numerous fuel field products, systems, and providers since 2010. In time, the pressure within the storage facility in gas-producing fields drops. Compressors are wanted to sustain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard to find a way to enhance the output to 306 million barrels. These are usually installed on platforms above sea level.
However, Åsgard is based on an underwater system. By utilizing compressors on the seabed the restoration charges are improved and the investment and working prices 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 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 part of the ANDRITZ Group, as did the manufacturing 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 equipment.
Depending on the world of application, the motors could be made from cast iron, bronze or totally different sort of chrome 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 designs with inside permanent magnet motor technology, or IPM for brief, these maintenance-free motors can achieve impressive outputs, efficiencies and, as a result, cost financial savings.
The efficient and measurable motor cooling system retains the interior temp- erature as low as potential. 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 finish of the rotor. One of its two main tasks is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there’s a fixed flow of cooling liquid in the proper course.
This liquid moves via the inside of the motor from the bottom 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 top finish, the heat 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 part of the underwater compressor system, but they’re additionally an especially essential half. The whole underwater station cannot operate with out these motors to drive the pumps. Since first being installed in เกจวัดแรงดันแบบแห้ง , 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 those liquids that are eliminated by the separator upstream of the gas compressors.
In 2017, due to a failure in part of the system which was not provided by ANDRITZ, the motor was sent in for repairs, throughout which an intensive research was performed. Thermal distribution in the cooling flow and the hot spots were analyzed in additional detail. 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 additionally utterly overhauled and fitted with a new winding and a model new rotor. This examine and the implementation of its findings not solely benefit the current buyer and future customers on this case, but additionally strengthen confidence in the ANDRITZ submersible motor technology.

Leave a Comment