Ryusok Co., Ltd.

Kohei Sakiyama

Eiichi Murakami

A soft-melted parison is disposed in molds forming a shape of a measurement pipeline portion, the parison is expanded by means of gas inflow, and blow molding is performed. The shapes of a pipe body, a fluid inlet portion, and a fluid outlet portionare formed by an inner mold of the molds. Ultrasonic wave input-output portionsandbulging outwards in a sealed manner are formed on both sides positioned in the oblique direction of the pipe bodywith respect to a center line of the pipe body. Parts of the ultrasonic wave input-output portionsandare wall surfacesandfor attaching ultrasonic wave transmission-reception units. The measurement pipeline portionis obtained by cutting end portions of the fluid inlet portionand the fluid outlet portionafter the parison is solidified.

Method for manufacturing measurement pipeline portion of ultrasonic flow meter

Transmission/reception unitsare fixed to both sides of a pipe body P in a clamp type. The transmission/reception unithas a mounterprovided with a through-holeand a transmitter/receiverinserted into the through-hole. The transmitter/receiverhas a surface contact portion, an element fixing portionprovided with an installation hole, and a ultrasound transmitting bodyinstalled in the installation hole. A transmitting/receiving elementis attached on a top surfaceof the ultrasound transmitting body. When the mounteris fastened, a force applied to the mounteris transmitted to the surface contact portionsuch that the surface contact portioncomes into close contact with the pipe body P, therefore an ultrasonic beam is transmitted smoothly between the pipe body P and the transmitting/receiving element

Clamp-type ultrasonic flow measuring apparatus with a mounter for press tight fit of a transmission/reception unit to the measuring pipe

An inlet conduit and an outlet conduit are disposed in a so-called crank shape with respect to a straight conduit. The straight conduit is provided with wall surfaces with which piezoelectric elements come into abutment from outside, and ultrasonic transceiver units are demountably mounted on the outside of the wall surfaces respectively. The two ultrasonic transceiver units have the same shape, and each include a covering member formed of a synthetic resin, the piezoelectric element provided in the covering member for transmitting and receiving an ultrasonic beam, and a cable connected to the piezoelectric element. The conduit portion and the ultrasonic transceiver unit are assembled separately. The ultrasonic transceiver units are disposed on both sides of the conduit portion and are coupled thereto with screws.

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Tokyo, Japan

Kohei Sakiyama