Abstract: A liquefied gas fuel filling system provided with a filling and pressure-balanced receptacle at a vehicle side combined with a filling and pressure-balanced nozzle at a station side connected with a storage tank, and an excess flow prevention valve provided in a pressure-balanced line for making the filling and pressure-balanced receptacle and a gas-phase region of a fuel tank contact each other. An orifice is provided in a pressure-balanced receptacle of the filling and pressure-balanced receptacle, thereby enabling the fuel tank to be smoothly filled with liquefied gas even when the outside air temperature rises.

Abstract: A turbine flowmeter includes an impeller rotatably provided within a flow passage through which a fluid to be measured flows and comprising a rotary shaft which rotates together with the impeller, a pair of bearing part having bearing surfaces for axially supporting the rotary shaft, a holding part for holding the bearing part and provided on the flow passage, an oil accumulating space defined by an end portion of the rotary shaft and bearing surfaces facing respective sides of the end portion, an oil accumulating part provided on the holding part and filled with the lubricating oil to be supplied to the oil accumulating space, an oil supplying part for supplying oil to the oil accumulating space which part comprises a capillary part connected on one end direct to the oil accumulating part and communicated on the other end to the space, wherein the lubricating oil is supplied to the space via the oil supplying part from the oil accumulating part by capillarity introduced in the oil accumulating part and the s

Abstract: A turbine flowmeter comprises an impeller which has a rotary shaft rotatable together with the impeller and is provided within a flow passage through which a fluid to be measured flows, a pair of bearing members for axially supporting the rotary shaft, an oil accumulating part provided in a vicinity of the bearing member for holding a lubricating oil therein, and an oil supplying part for supplying the lubricating oil in the oil accumulating part in small quantities to at least one of the bearing members.

Abstract: A turbine flowmeter comprises an impeller which has a rotary shaft rotatable together with the impeller and is provided within a flow passage through which a fluid to be measured flows, a pair of bearing members for axially supporting the rotary shaft, an oil accumulating part for holding a lubricating oil therein, and an oil supplying part for supplying the lubricating oil in the oil accomulating part in small quantities to at least one of the bearing members. The oil supplying part comprises a capilary member.

Abstract: A vortex shedding flowmeter comprises a flow passage through which a fluid flows, a bluff body arranged in the flow passage for generating Karman vortex of the fluid and provided with a pair of holes which open to respective side surfaces of the bluff body and extend toward and penetrate through one end of the bluff body for introducing a pressure change caused by the Karman vortex, a body which is an independent member from the bluff body, a pair of detecting parts provided in the body and comprising a pair of recesses provided on the body, a pair of fixed electrodes and a pair of movable electrodes provided in the recesses with a predetermined distance therebetween, a communicating hole provided in the body for communicating a pair of spaces formed between the fixed and movable electrodes, and a sealed fluid sealed in the spaces and the communicating hole, where the movable electrodes are displaced responsive to the pressure change in the fluid introduced from the bluff body and received by surfaces of the

Abstract: An air fuel ratio control system comprises a first valve provided in a fuel pipe through which a fuel is supplied to a burner, a second valve provided in an air pipe through which air is supplied to the burner, a varying circuit for varying responsive to a preset flow rate of fuel a valve opening degree of each of the first and second valves while maintaining a constant ratio between the valve opening degrees of the first and second valves, so that an air fuel ratio of a flow rate of fuel flowing through the first valve and a flow rate of air flowing through the second valve assumes a value greater than a theoretical air fuel ratio, a first sensor for detecting a flow rate of fuel flowing through the fuel pipe, a second sensor for detecting a flow rate of air flowing through the air pipe, a fuel bypass pipe provided in the fuel pipe for bypassing the first valve, a third valve provided in the fuel bypass pipe, and a control circuit supplied with output signals of the first and second sensors for controlling a

Abstract: A turbine meter comprises an axle member supported by a support member within a conduit through which a fluid to be measured is passed and having a small-diameter axle part and an annular recess formed around the small-diameter axle part between a pair of opposed faces, a longitudinal flow passage formed in the axle member, a plurality of discharge holes formed in the axle member to connect communicatively the annular recess and the flow passage, a supply pipe inserted into the conduit through the wall thereof and functioning to supply a pressurized fluid from a pressurized fluid source disposed outside of the conduit to the flow passage in the axle member, a vane wheel comprising a hub disposed around the axle member and within the annular recess with minute gaps therebetween and adapted to rotate in a substantially non-contacting state relative to the small-diameter axle part and a plurality of vanes implantedly fixed at their root parts to the hub, the vane wheel being rotated by a portion of the fluid to

Abstract: A turbine meter for measuring flow rates of various fluids of different coefficients of viscosity. The turbine meter has an impeller including a cylindrical body and a plurality of vanes provided on the outer peripheral surface of the cylindrical body, a tube in which the impeller is rotatably supported, guide members disposed at the upstream side and downstream side of the impeller and adapted for guiding flow of fluid passing through the impeller, and means for permitting the adjustment of the axial distance between two cone members from the outside of the turbine meter.

Abstract: A turbine flowmeter comprises a rotor comprising a hub rotatably supported on a shaft at an axial position of a flowmeter housing and a plurality of blades embeddedly fixed to the outer peripheral surface of said hub, means for detecting the rotation of said rotor, and a couple of cone members disposed respectively on the up-stream side and the down-stream side in the flow direction of a fluid being measured to confront at least one surface of the hub of said rotor in coaxial alignment with said rotor. The diameter of at least one cone member of the couple of cone members, at the side to confront said rotor, is larger than outer diameter of the hub of said rotor, whereby a stagnant fluid region is formed between the enlarged diameter part of said cone member and the outer peripheral surface of said hub for holding in stagnant state a part of said fluid being measured.

Abstract: A turbine meter comprising a casing of substantially hollow cylindrical shape installed within a conduit through which a fluid to be measured is flowing, an axle member supported within the casing and having an annular recess therearound; a longitudinal flow passage formed in the axle member, a plurality of discharge holes formed in the axle member to connect communicatively the annular recess and the flow passage, a supply pipe inserted into said conduit through the wall thereof and functioning to supply a pressurized fluid to said flow passage in the axle member, a vane wheel comprising a hub disposed around said annular recess with minute gaps therebetween and adapted to rotate in a substantially non-contacting state relative to the axle member and a plurality of vanes implantedly fixed at their root parts to the hub, said vane wheel being rotated by a portion of the fluid being measured which flows through the casing, and means for detecting the rotation of the vane wheel.