Mitsubishi Jukogyo Kabushiki Kaisha

The Tokyo Electric Power Company, Incorporated

Joji Ichinari

Shozo Kaneko

Tadashi Gengo

Susumu Sato

Masayoshi Murata

Keiichi Iwamoto

Masaaki Torichigai

Takashi Yamamoto

Hiroshi Fujimura

Shuya Nagayama

Yoshimi Okabe

Yoshio Kayumi

Hideharu Kobayashi

Atsumasa Iwanaga

Kiyoshi Koizumi

Misao Yamamura

Jiro Takada

Hiroshi Fujiyama

An exhaust heat exchanger system recovers heat from exhaust gas emitted from a prime mover, for example, a diesel engine, gas engine, gas turbine, etc., and/or to reduce harmful components such as NO.sub.X (nitrogen oxides). A high-temperature side heat exchanger section and a low-temperature side heat exchanger section are disposed in a single casing and these heat exchanger sections are connected together through a duct. An exhaust gas purifying catalyst is disposed in the duct. Accordingly, it is possible to simplify the mechanism of the exhaust heat exchanger system, reduce the overall size of the system, lower the production cost and minimize the installation space. Further, the exhaust gas purifying operation is efficiently carried out by the action of the catalyst.

Exhaust heat exchanger system

The present invention is directed to a method for forming a thin film on a substrate by the use of a glow discharge plasma which comprises generating a magnetic field in a direction which crosses an electric field for discharge at right angles and fluctuating the magnetic field. The present invention is also directed to an apparatus for practicing the above method, which apparatus is composed of a reaction vessel, means for reducing the pressure in the reaction vessel and means for introducing the feed of reaction gases to the reaction vessel, electrodes for discharge disposed face to face in the reaction vessel, a power source from which a voltage for causing a glow discharge is fed to the electrodes for discharge, a coil surrounding the electrodes for discharge, for generating a magnetic field in a direction crossing at right angles to an electric field generated between the electrodes for discharge, and an AC power source for generating a magnetic field fed to the coil, whereby a thin film is formed on a base plate supported outside the range of the discharge electric field and in parallel with the direction of the electric field.

Method and apparatus for forming thin film

An automated ultrasonic examination system for heat transfer tubes in a boiler makes it possible to perform ultrsonic examination from inside of the heat transfer tubes without necessitating the removal of scale from the outer surfaces of the boiler tubes by polishing and without necessitating access to places where manual measurements are difficult or impossible to make. The system includes an insert tube adapted to be inserted into a cylindrical header to which one of the heat transfer tubes are connected, an insert tube moving device for moving the insert tube in the axial direction of the header and revolving it about its own axis, an ejection nozzle provided on the insert tube, a water pump for feeding pressurized water to the ejection nozzle, a cable adapted to be inserted from the ejection nozzle into the heat transfer tube as passed through the insert tube by the pressurized water fed from the water pump, a cable accommodation tank for accommodating the cable, a revolving submerged ultrasonic probe mounted at the tip end of the cable, and an ultrasonic examination unit for processing signals sent from the probe and displaying the results of examination. Preferably, a device for detecting a length of the cable inserted into the heat transfer tube is provided in the automated ultrasonic examination system.

Automated ultrasonic examination system for heat transfer tubes in a

A steel tube working apparatus is composed of a clamping device consisting of a pair of clamps, a pair of projecting plates, means for actuating the clamps and the projecting plates, a pair of guide bars and a main body frame; a base plate having a pair of guide rollers fitting to the guide bars fixedly secured to its opposite ends; and working means connected to the base plate in a movable and rotatable manner. A cutting device, a beveling device, a welding device, etc. are selectively connected to the base plate as the working means.

Steel tube working apparatus

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Nagasaki, Japan

Joji Ichinari