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Hitachi 40 MW turbine

Hitachi’s Advanced Humid Air Turbine (AHAT) system, co-developed with the Central Research Institute of Electric Power Industry (CRIEPI) and Sumitomo Precision Products Co., Ltd. (SPP) has passed verification testing for a gas turbine operating at 40 MW. Hitachi, CRIEPI and SPP have been working on the development of AHAT cycle power generation since 2004, in a project supported by the Ministry of Economy, Trade and Industry, Japan.

The Hitachi turbine has multi-stage axial-flow compressors, multi can-type combustors and a hybrid cooling nozzle using highly humid air and the discharged air from the compressor. This enables the nozzle to be cooled to below target temperature. Start-up time from cold-start ignition to rated power can be achieved in 60 minutes. The next step is to scale this turbine up to 200 MW.

Wireless gas monitoring

Oldham’s OLCT 80 wireless field detector and transmitter is designed to monitor oxygen and combustible, toxic and refrigerant gases. Up to 49 devices with a range of three km can be linked via a secure network to monitor remote areas.


Aqueous cleaning system

MecWash Systems has introduced the Midi aqueous cleaning system. Nozzles can deliver 130 gallons per minute. Rotation of the workload at between 2 and 10 rpm exposes all surfaces to the wash and rinse solutions.

Radial seal rings Metallized

Carbon Corp. has developed radial seal ring assemblies — also known as packing rings — used to prevent liquid or gas leakage in turbomachinery, oil-free piston compressors, blowers and pumps by sealing the clearance between a rotating or reciprocating shaft and the stationary housing. Carbon-graphite radial seal assemblies help solve leakage problems that occur when stuffing box seals fail due to wear, thermal degradation, chemical attack and dimensional stability problems with plastic, composite or elastomeric seal ring materials. Two types of seals rings are available: close clearance or shrink fitted.

Oil analyzer

FluidScan Q1100 handheld infrared oil analyzer from Spectro, Inc. enables users to determine when oil is no longer fit for use due to liquid contamination or degradation. It measures water, total acid number (TAN), oxidation, glycol, total base number (TBN) and other parameters using infrared spectroscopy. It operates without wet chemistry and requires no solvents; only one drop of oil is needed for analysis.

Instrumentation valves

Brennan Industries has released new compression- end instrumentation valves with single or double ferrule-style tube fittings. NVB Series Ball Valves range in size from 1/8” to ¾” and are available in either 316 stainless steel or brass construction. These valves can have two- or three-way configurations and are rated to 3,000 psi. NVN- 2200 and NVN-2300 Series Screwed Bonnet Needle Valves range in size from 1/8” to 1” and are available with either metal-to-metal or soft-seat stem types.

Proximity measuring systems

Meggitt Sensing Systems has upgraded its Vibro-Meter proximity measuring systems for longer lifetime. Proximity probes, also known as eddy current transducers, are used to measure the relative vibration of rotating shafts in hydro, gas and steam turbines. TQ series probes are available in measurement ranges from 2-to-12 mm. Calibration improvements increase the repeatability of measurements. A self-locking miniature coaxial connector, combined with a cable protection sleeve material, increases the maximum temperature from 85 to 180°C.

Gas chromatograph

Siemens Industry Automation Division is offering a modular oven and an operator panel with a color display for its Maxum Edition II gas chromatographs. A modular approach increases the availability of the gas chromatograph, while at the same time reducing maintenance overhead and operating costs. The operator panel has a 10-inch color touch display, which makes it easier to use the analyzer. It is backward compatible and can be retrofitted to older systems.