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发明公开
CN105781481A 一种带钢骨架的螺旋式封隔器胶筒 无效 - 驳回

一种带钢骨架的螺旋式封隔器胶筒
摘要：
本发明涉及一种封隔器胶筒，具体涉及一种带钢骨架的螺旋式封隔器胶筒。该胶筒包括胶筒本体，所述的胶筒本体为筒状，胶筒本体上设置有螺旋纹，胶筒本体的螺旋纹内包裹有螺旋弹簧。该胶筒结构简单，实用性好，通过胶筒本体内包裹的螺旋弹簧可在压力作用下将轴向压力均匀传递在胶筒本体上，并且螺旋弹簧的轴向变形量与胶筒本体一致，使胶筒本体受力均匀，避免胶筒本体的中间部位发生弯曲变形，从而增加了胶筒本体与井壁的接触长度，增加了密封面积以及稳定性；减少“肩突”现象。同时螺旋弹簧在压缩时蓄能，胶筒解封时，螺旋弹簧释放能量能使胶筒快速恢复原状。
摘要（英）：

The invention relates to a packer rubber barrel, in particular to a spiral packer rubber barrel with a steel skeleton. The rubber barrel comprises a rubber barrel body; the rubber barrel body is of a cylinder shape; a spiral thread is formed on the rubber barrel body; a spiral spring is coated in the spiral thread of the rubber barrel body. The rubber barrel is simple in structure and high in practicality; by the spiral spring coated in the rubber barrel body, an axial pressure can be uniformly transferred to the rubber barrel body under the action of a pressure; moreover, axial deflection of the spiral spring is consistent with that of the rubber barrel body, so that the rubber barrel body is uniformly stressed and bending and deformation of the middle position of the rubber barrel body are avoided, thereby increasing a contact length of the rubber barrel body and a well wall, increasing a sealing area and improving stability; the phenomenon of shoulder protrusion is reduced. Meanwhile, the spiral spring stores energy when being compressed, and when the rubber barrel is unsealed, the spiral spring releases energy to enable the rubber barrel to be rapidly recovered to the original state.

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