Bulk cement metering device

Details Bulk cement metering device Bulk cement metering device

1992-01-03

1992-12-29

Rosenthal, Arnold

Fluid handling

Processes

406192, 251205, 251209, 251325, 251310, 137556, F16K 326, F16K 510, F16K 504

Patent

active

051743205

ABSTRACT:
An improved bulk cement metering apparatus includes a valve housing having a cylindrical inner housing bore. The housing has an inlet opening through a side wall thereof. A housing outlet is defined at an open lower end of the cylindrical valve housing. A cylindrical valve element is concentrically and rotatably received within the housing bore. The valve element is rotatable relative to the valve housing between a first fully closed position and a second fully open position. In the closed position the valve element completely blocks the inlet opening. In the open position the inlet opening is completely open. As the valve element rotates from its closed position to its open position a circumferentially extending cutout means thereof progressively uncovers an increasing upper portion of the inlet opening. This design results in decreased plugging of the metering device at low flow rates.

REFERENCES:
patent: 613041 (1898-10-01), Kamerer
patent: 711609 (1902-10-01), Woodnall
patent: 1868811 (1932-07-01), Yarnall
patent: 3355220 (1967-11-01), Brown
patent: 3409270 (1968-11-01), Hulsey
patent: 3437311 (1969-04-01), Schaible et al.
patent: 3558100 (1971-01-01), Hulsey
patent: 4249839 (1981-02-01), Vance
patent: 4500070 (1985-02-01), Riollet et al.
BJ Services Brochure No. 9/90 10M 1048 entitled "RAM Cementing Technology Land/Offshore" (undated but admitted to be prior art).
Dowell Schlumberger Brochure TSL-5016 entitled "VIP Mixer Total Control Of Cement Mixing" (undated but admitted to be prior art).

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