Laminated expansion type temperature control sealing device
A sealing device and expansion technology, applied in the directions of sealing/isolation, wellbore/well components, earth-moving drilling, etc., which can solve the problem that the axial extrusion sealing force cannot be formed, the sealing and insulating material is not available, and the sealing effect is not good. and other problems, to achieve the effect of remarkable thermal insulation effect, good sealing and good buffering effect.
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[0023] In order to make the techniques, creative characteristics of the present invention, it is easy to understand that the present invention is further illustrated in connection with the specific embodiments.
[0024] Such as Figure 1-3 As shown, a laminated expanded temperature control sealing device includes an upper center tube 5, a lower center tube 11, a upper sealing sleeve 4, and a lower sealing 8, and one end set of the upper center tube 5 is provided with a lower center tube 11. The connection of the upper center tube 5 and the lower center tube 11 is provided with an end sleeve 9 and an end sleeve 8 of the uplink cone 9, and one end sleeve of the lower sealing 8 is provided. Set 7, one end sleeve of the in-sealing sleeve 7 is provided with an upper sealing sleeve 4, and one end of the upper sealing sleeve 4 is provided with a cover 2.
[0025] Among them, one end of the upper sealing sleeve 4 is engaged in the limit slot of the upper shroud 2, and the upper sealing sle...
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