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    • 11. 发明专利
    • APPARATUS FOR MEASURING NON-NEWTONIAN PROPERTY IN PIPELINE
    • JPS62194441A
    • 1987-08-26
    • JP3536286
    • 1986-02-21
    • NIPPON KOKAN KK
    • HAYASHI HIDEOOTOMO SHIGERUHOSAKA YASUMURAODA SHUNICHI
    • G01N11/00G01N11/02G01N11/08
    • PURPOSE:To make it possible to measure the non-Newtonian property of the fluid flowing through a pipeline by an on-line system, by measuring the difference pressure of a different diameter pipe part having three different diameters and comparing the calculated difference pressure value of the different diameter pipe part with an actually measured difference pressure value. CONSTITUTION:Measuring pipes S, M, L different in an inner diameter are interposed on the way of a pipeline main pipe X and connected by reducers R so as not to inhibit the flow of a fluid. An operator 2 operates the output values from the difference pressure gauges mounted to the measuring pipes S, L on the basis of the output value from the difference pressure gauge 1M mounted to the measuring pipe M having the intermediate inner diameter supposing that the fluid flowing through the main pipe is a Newtonian fluid. The obtained operated values are inputted to differential amplifiers 3L, 3S where the differences between said values and the actually measured values from difference pressure gauges 1L, 1S are amplified and outputted. Said differences show the shift from the Newtonian fluids in the measuring pipes S, L and, if the magnitude or the positive and negative thereof is known, the non-Newtonian property of the fluid flowing through the pipe can be judged.
    • 18. 发明专利
    • PIPE END EXPANDING MACHINE
    • JPS583735A
    • 1983-01-10
    • JP9963481
    • 1981-06-29
    • NIPPON KOKAN KK
    • HAYASHI HIDEONAKANO TAKASHI
    • B21D41/02
    • PURPOSE:To simplify a detaching work of a pipe expanding machine, and to elevate its safety, by guiding a movement of a segment in the radial direction, by a guide groove of the base provided on the segment rear end part, and also exactly returning the segment by a compression spring. CONSTITUTION:On a base 11 fixed to an hydraulic cylinder device 4 with a bolt, a dovetial groove-like guide groove 11A corresponding to each segment 10 of a split die is formed, and on the rear end of each segment 10, a set bolt 12 fitted into said guide groove 11A is vertically provided. Also, the segment 10 is pressed into the inside in the radial direction by inserting a compression spring 14 supported by a binder plate 13 and a binder rod 15 installed to the base 11, into a hole 10B provided in the radial direction of the segment 10. When detaching a pipe expanding machine from a pipe 1, the segment 10 can be returned exactly to a prescribed position by operating a ram 5 of the cylinder 4 and moving a pipe expanding pyramid 3B fixed to a rod with a lock nut 3C, to the left.