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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.

Pending Publication Date: 2022-03-25
PANJIN YANXIANG IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the prior art, oil well gas injection string products are characterized by heat insulation and sealing measures at the joints. The disadvantage is that most of the existing sealing structures use a single-layer sealing layer, and the sealing and heat insulation materials cannot form an axial Squeeze the sealing force, the sealing effect is not good; and the sealing layer and the joint of the gas injection pipe are mostly sealed by snap-fit, which needs to be pre-installed before the pipe is lowered, and the diameter of the pipe is fixed, so the scope of use is limited

Method used

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  • Laminated expansion type temperature control sealing device
  • Laminated expansion type temperature control sealing device
  • Laminated expansion type temperature control sealing device

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Embodiment Construction

[0023] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0024] Such as Figure 1-3 As shown, a laminated expansion type temperature control sealing device includes an upper central tube 5, a lower central tube 11, an upper sealing sleeve 4 and a lower sealing sleeve 8, and one end of the upper central tube 5 is sleeved with a lower central tube 11 , the junction of the upper center pipe 5 and the lower center pipe 11 is provided with an upward taper sleeve 9 and one end of the upper taper sleeve 9 is provided with a lower sealing sleeve 8, and one end of the lower sealing sleeve 8 is provided with a middle seal sleeve 7, one end of the middle sealing sleeve 7 is covered with an upper sealing sleeve 4, and one end of the upper sealing sleeve 4 is covered with an upper shield 2.

[0025] Wherein, one en...

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Abstract

The invention discloses a laminated expansion type temperature control sealing device which comprises an upper central pipe, a lower central pipe, an upper sealing sleeve and a lower sealing sleeve, one end of the upper central pipe is sleeved with the lower central pipe, the joint of the upper central pipe and the lower central pipe is sleeved with an ascending taper sleeve, one end of the ascending taper sleeve is sleeved with the lower sealing sleeve, and the other end of the ascending taper sleeve is sleeved with the lower sealing sleeve. One end of the lower sealing sleeve is sleeved with a middle sealing sleeve, one end of the middle sealing sleeve is sleeved with an upper sealing sleeve, and one end of the upper sealing sleeve is sleeved with an upper protective cover. By means of the multiple layers of sealing structures which are arranged together in a sleeved mode, the overall sealing effect is improved, high sealing performance is achieved, the heat preservation effect is remarkable, the sealing structure is widely applied to the vacuum heat insulation double-sealing heat preservation joint, heat loss is reduced, and the design concept of energy conservation and environment protection is manifested.

Description

technical field [0001] The invention relates to the technical field of sealing structures, in particular to a laminated expansion type temperature-controlled sealing device. Background technique [0002] In the prior art, oil well gas injection string products are characterized by heat insulation and sealing measures at the joints. The disadvantage is that most of the existing sealing structures use a single-layer sealing layer, and the sealing and heat insulation materials cannot form an axial Squeeze the sealing force, and the sealing effect is not good; and the seal layer and the gas injection pipe joint are mostly sealed with snap-fits, which need to be pre-installed before the tube is lowered, and the diameter of the tube is fixed, so the scope of use is limited. To this end, we propose a laminated expansion temperature-controlled sealing device. Contents of the invention [0003] The main purpose of the present invention is to provide a laminated expansion type temp...

Claims

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Application Information

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IPC IPC(8): E21B33/12
CPCE21B33/1208
Inventor 田雨珊张平许龙生许英杰
Owner PANJIN YANXIANG IND CO LTD
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