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106results about How to "Completely sealed" patented technology

Slider for sealable storage bag and sealable storage bag provided with the slider

A slider for a sealable storage bag is provided that causes fastener members F which include at least one set of a convex strip portion F1 and a concave strip portion F2 disposed so as to oppose each other at inner surfaces of an opening B1 of the sealable storage bag B to be fitted together by sliding the slider 1 along the opening B1 from an outer side of the sealable storage bag B to thereby close the opening B1, the slider 1 comprising two opposing pieces 2 that are engaged with each other at a base end side and arranged with a predetermined interval therebetween at a leading end side, the opposing pieces 2 disposed at the opening B1 so as to externally cover part of the opening B1; at least one push protrusion 3 that pushes the fastener members F from the outer side of the sealable storage bag B to cause the convex strip portion F1 and the concave strip portion F2 to be fitted together so as to protrude from an inner surface 22 of at least one of the opposing pieces 2; and a tongue-shaped stopper 4 that protrudes from part of the opposing pieces 2 towards a space 2a between the opposing pieces 2, 2, with a leading end of the stopper 4 positioned further towards the base end side than the push protrusion 3, the stopper 4 having a base portion 41 disposed at the opposing pieces 2 and an expanded portion 42 disposed at the leading end side of the base portion 41, wherein a width dimension W42 of the expanded portion 42 that is a dimension along a sliding direction S exceeds a width dimension W41 of the base portion 41, the width dimension W42 being equal to or less than a width dimension W2 of the opposing pieces 2, and wherein
a dimension W3 between one end edge 3a and the other end edge 3b of the push protrusion 3 in the sliding direction S is equal to or less than the width dimension W42 of the expanded portion 42.
Owner:ARU

Underwater dual-screw mixed transportation supercharging device

The invention relates to an underwater dual-screw mixed transportation supercharging device. The underwater dual-screw mixed transportation supercharging device comprises a deep-water motor, a dual-screw pump, a homogenizer, a liquid storage tank, a piston type pressure compensator and a capsule type pressure compensator, wherein the dual-screw pump is positioned above the deep-water motor; the homogenizer is in butt joint with a wellhead pipeline; the liquid storage tank is in butt joint with a submerged pipeline; independent pressure compensation and cooling-lubricating loops are respectively adopted in the deep-water motor and the dual-screw pump, and work separately; movable seals of the deep-water motor and the dual-screw pump are balanced in internal pressure and external pressure. The underwater dual-screw mixed transportation supercharging device is safe and reliable, and has long service life. Compared with the conventional underwater dual-screw mixed transportation supercharging device, the underwater dual-screw mixed transportation supercharging device has the advantages that the structure is simple, and safety and reliability in work are achieved; heat generated by the dual-screw pump and the deep-water motor can be brought away in time, reliable running of the device is ensured, pressure difference does not exist between the inside and outside of the device, complete pressure compensation is achieved, high economic efficiency is realized, an underwater treatment process is simplified, the platform building cost and running cost are saved, and the supercharging device has remarkable economic benefit and wide application prospect.
Owner:CHINA UNIV OF PETROLEUM (EAST CHINA)
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