Crrc Qiqihar Rolling Stock Co., Ltd.

Daqing Oilfield Company Limited

Petrochina Company Limited

Daqing Oilfield Co. Lit

Yan Wang

Qingmin Meng

Demin Wang

Yingjun Cui

Changchun Wang

Rongjie Zhu

Pengdi Jin

Yan Jiang

Rong Zhong

Long Ren

Hongyan Wang

Jun Wan

Shumin Zhang

Li Li

Shengguo Cong

A vehicle coupler, a coupler tongue and a coupler body. Upper traction platforms and lower traction platforms of the coupler tongue and the hook body are arranged in an offset manner in the horizontal direction, and the section R of a traction surface of the upper traction platform and the section S of a traction surface of the lower traction platform are obtained by sectioning the coupler tongue along any vertical surface across an axis of a pin hole; and the perpendicular distance between the point on the section R closest to a nock portion and the axis of the pin hole is k, and the perpendicular distance between the point on the section S closest to the neck portion and the axis of the pin hole is m, and as such, n=|k−m|, and 10 mm≤n≤125 mm.

Vehicle coupler, coupler tongue and coupler body

A railway vehicle, a coupler, and a coupler body thereof. The coupler body comprises an upper traction platform, a lower traction platform, a lock chamber, and a pin hole. A traction surface of an upper traction platform and/or a lower traction platform is divided into a contact area and a yielding area along the direction approaching the lock chamber, an extension face of the end of the contact area close to the lock chamber is an M2 face, and the yielding area is positioned at the side of the M2 face close to the pin hole. The yielding area is positioned on the side of the contact area next to the lock chamber and there is a gap and no contact between the yielding area and a traction platform of a coupler knuckle.

Railway vehicle, coupler, and coupler body thereof

The present invention relates to a crown-shaped separation device for separating oil and water in a well. Separator joints are sleeved on a central tube, and a separator is arranged between adjacent separator joints. Settlement cups are sleeved on the central tube, and two adjacent settlement cups are inserted together. A multi-rib separating bowl is embedded in the settlement cup. The settlement cup is crown shape. The bottom of the settlement cup is formed with multiple ribs. An angle is formed between the convex rib of the bottom of the settlement cup and the horizontal line. The top edge of the settlement cup is sawtooth shape corresponding to the shape of the cup bottom. An annular space is formed between the cup base of the settlement cup and the central tube. The central tube corresponding to the annular space is provided with a fluid inlet. The shape of the multi-rib separating bowl is identical to that of the bottom of settlement cup, and the multi-rib separating bowl is provided with a fluid passage. The downhole device solves the effective separation of oil and water.

Crown-shaped separation device for separating oil and water in well

A corrugated settling cup () is provided, wherein the cup has a cup body, an opening and a location step () are provided at the bottom () of the cup body, several location holes () are formed at the top of the location step (), location projections () corresponding to the location holes () are formed at the bottom () of the corrugated settling cup (), wherein the external profile of the corrugated settling cup body rises along the axial direction in a corrugated shape. A multi-cup uniform flux gas anchor is provided, wherein the gas anchor includes a central pipe (), several corrugated settling cups (), several settling cups protection bodies (6) and a well-flushing valve (), wherein the external profile of the corrugated settling cup body rises along the axial direction in a corrugated shape.

Corrugated settling cup and a multi-cup uniform flux gas anchor

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Heilongjiang, China

Yan Wang