СПМ для судостроения и морских платформ

Сертифицировано для судостроения и шельфовой зоны

ОФС в судостроительной отрасли

Техническое обслуживание на борту судна традиционно было основано на времени наработки оборудования. Высокие требования к защите окружающей среды, надежности и безопасности судна сделали мониторинг состояния широко распространенной технологией (принятой сертификационными компаниями), внедряемой на большинстве судов.

Данные о фактическом состоянии Вашего оборудования являются необходимыми для того, чтобы избежать неожиданных поломок и максимально увеличить эксплуатационный период оборудования. Своевременный прогноз поломки является критически важным аспектом для сокращения количества обслуживающего персонала и склада запасных частей.

С самого начала мы непрерывно развивали нашу линейку продукции, включая переносные приборы, стационарные системы и аксессуары, специально спроектированные для мониторинга ударных импульсов наиболее критического оборудования на борту, такого как насосы, вентиляторы, турбогенераторы, азиподы, электрические двигатели и т.д. Мониторинг вибрации оборудования применяется  в случаях, когда появляются другие проблемы, такие как расцентровка валов, дефекты крыльчатки насоса, редукторовдисбаланс и т.д. На тихоходных агрегатах используется технология измерения SPM HD^® . SPM HD использует текущую частоту скорости вращения и технику алгоритмической корреляции для достижения максимально качественного сигнала и четкого спектра для дальнейшего анализа.

В круг наших клиентов входят компании RCCL, Stolt Nielsen, Dorchester Maritime, BW Gas ASA, Bergshav Management, Crystal Cruises, Hyundai, Kvaerner Masa-Yards, Knutsen OAS Shipping, Navion AS, DSME, Samsung Heavy Industries, Teekay Shipping, Мурманское морское пароходство.

Пример применения: турбонагнетатель

Наше решение

Shock pulse transducers installed in the bearing housings, both on the turbine and the compressor side, are connected by coaxial cables to a multichannel measuring and display module. A vibration transducer monitors the overall movement. The readings can also be captured with a handheld unit, e.g. Leonova Diamond or Leonova Emerald. You get an instant, user-friendly condition evaluation on a green-yellow-red scale. The system gives immediate results as maximized up-time, increased profitability and reduced cost etc.

The concept of air compression and expansion has been used in a variety of applications: gas turbines, steam turbines, wind energy, turbo charging of diesel engines and is commonly used in the maritime industry.

A turbo charger comprises a turbine and a compressor connected by a common shaft, supported on a bearing system.

The turbo charger converts waste energy into compressed air which it pushes into the engine. This allows the engine to produce more power and torque and improves the overall efficiency of the combustion process.

The turbo charger has two bearings, one on the compressor side and one on the turbine side. The bearings are either of roller bearing type or sleeve bearing type.

A breakdown of a turbo charger is very costly. Direct costs are primary and secondary material damages. Indirect costs are off-hire of the ship, penalties due to late arrival to port because of decreased speed, badwill in front of passengers etc. Therefore, condition monitoring of turbo chargers is very important when it comes to monitoring the condition of the turbo charger and planning its maintenance to eliminate any unplanned stops.

Typical faults and trends

While in good condition, turbo charger bearings produce very stable shock pulse readings. Due to the high rpm, the fatigue of these bearings results in a fairly rapid damage development. A few weeks´ warning time can be expected, but it is advisable to replace the bearing at the first opportunity after an increase in the shock level. Vibration above all increases on the turbine side when the compressor is fouled and needs cleaning. Combustion residues on nozzle vanes and turbine blades cause a considerable drop in compressor efficiency.

Bearing damage

The bearing can be damaged due to normal wear, poor lubrication oil, incorrect mounting etc. If the turbo charger runs until the bearing breaks down due to any of the above reasons this will cause the turbo charger to stop and the bearing will have to be replaced before startup. Bearing damage might also cause secondary damages to the turbine and to the compressor.

Rotor imbalance

Rotor imbalance means that the turbo charger starts to vibrate. This is because the blades have dirt deposit causing these vibrations. If the turbo charger is run towards a rotor breakdown this will cause the turbo charger to stop. The rotor will have to be replaced and most probably secondary damages will have to be fixed.

The solution

1) Turbine bearing 2) Blower bearing 3) Turbine vibration

A breakdown is very costly, mainly due to material costs. The time from worsened condition to a breakdown is much shorter compared to many other applications, due to the very high speed at which turbo chargers are run. An online solution is therefore often preferred when monitoring the condition of turbo chargers.

Suggested methods

Roller bearing types

SPM monitoring of the bearings with the SPM® method. Vibration monitoring on the housing for measuring the impeller condition.

Sleeve bearing types

Vibration monitoring

For trending and alarm handling, SPM Instrument supplies units which give 4-20 mA output for connecting to local PLC. A solution with the Condmaster® Ruby software can also be implemented.

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