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1.发明授权Apparatus for sensing thickness variations, discontinuities, and the like in elongated steel structures by measuring variations in magnetic properties utilizing a flux gate 失效用于通过测量使用磁通门的磁性变化的变化来感测厚度变化，不连续性和类似于延长钢结构的装置公开(公告)号：US3597678A
公开(公告)日：1971-08-03
申请号：US3597678D
申请日：1968-12-24
Applicant: WILLIAMS BROTHERS CO
Inventor： FEARON ROBERT E
CPC classification number: G01N27/9046 , G01B7/10 , G01N27/902
Abstract: A ferromagnetic pipe section is magnetically energized parallel to its axis at a low frequency and flux intensity, and a subsection of the energized section is sensed circumferentially to generate a signal responsive to changes in the magnetic character of the pipe comprising the said subsection. The sensing apparatus includes an annularly shaped, axially outwardly facing channel containing a circumferentially wound sensing coil surrounded by a toroidal gating coil. Associated circuitry generates a signal indicative of changes in the magnetic character of the subsection of the pipe sensed.
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公开(公告)号：US3556761A
公开(公告)日：1971-01-19
申请号：US3556761D
申请日：1967-11-30
Applicant: WILLIAMS BROTHERS CO
Inventor： LARSON FAY N , HENRY FRANCIS B , PARKS CLYDE
CPC classification number: F17D3/05 , F16L2101/40 , Y10T137/0318
Abstract: A METHOD OF TRANSPORTING BY PIPELINE TWO IMMISCIBLE FLUIDS SUCH AS A PETROLEUM PRODUCT AND A FERTILIZER SOLUTION. THE TWO FLUIDS ARE SEPARATED BY A TWO-ZONE LIQUID BUFFER, THE ZONES OF WHICH ARE SOLUBLE IN THE RESPECTIVE FLUIDS AND ALSO ONE IN THE OTHER, AS FOR EXAMPLE, ACETONE OR ALCOHOL AND WATER.
