US 12,422,041 B2Granted

Y-shaped packer

AssigneeHengxiang Technology Inc., Ltd

InventorsMeiqin Ma, Jianbang Sun, Xiaojuan Chen, Chengang Shi, Yasheng Zhang, Ting Yin, Yongxiao Lei, Baoquan Liu, Jiande Tian

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Abstract

A Y-shaped packer includes a supporting part, fixedly sleeved on the outer wall of the inner barrel; a plugging part having an inner end part connected with the outer wall of the supporting part, and an outer end part tilted upward so that an angle between the plugging part and the supporting part is an acute angle; an expansion seal connected with the supporting part. The expansion seal is located above the plugging part. The Y-shaped packer is arranged in an annular gap between an outer barrel and an inner barrel. Through the combination of the supporting part arranged obliquely and the expansion seal arranged above the supporting part, the invention-shaped packer can realize the effect of secondary sealing on the gap between the outer barrel and the inner barrel.

Claims6

Dependent claims

A packer configured to be disposed in an annular gap between an outer barrel and an inner barrel, comprising:

a supporting part, wherein the supporting part is an annular cylinder configured to be fixedly sleeved on an outer wall of the inner barrel;
a plugging part, wherein the plugging part is a circular ring having an inner edge connected with an outer wall of the supporting part and an outer edge tilted upward toward an inner wall of the outer barrel, so that the plugging part and the supporting part form an acute angle therebetween;
and
an expansion seal, wherein the expansion seal is annual in shape and is connected with the supporting part at a location above the plugging part,
wherein the supporting part comprises a plurality of supporting blocks, and an inner wall of each supporting block is provided with a curved groove adapted to receive a section of a protrusion on the outer wall of the inner barrel.

2 more elements

Dependencies are inferred from the claim text.