Dual openable stopper for high-temperature and pressure pipeline blocking construction

A high temperature and high pressure, plugging head technology, applied in the direction of pipes/pipe joints/fittings, pipe components, mechanical equipment, etc., can solve the problem that the sealing layer cannot be used, the supporting force cannot be satisfied, and the rubber sheet seal cannot meet the plugging needs. and other problems to achieve the effect of improving one's own strength

Inactive Publication Date: 2006-08-16
马耀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure has some disadvantages such as: the skeleton must be plastically deformed when multiple support rods expand, and the required plastic deformation limits the thickness and strength of the skeleton; the sealing layer can only use rubber sheets, which are larger than those used by rubber sheets. The expansion force required by the soft metal sealing layer cannot be completed due to the strength limitation of the support

Method used

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  • Dual openable stopper for high-temperature and pressure pipeline blocking construction
  • Dual openable stopper for high-temperature and pressure pipeline blocking construction
  • Dual openable stopper for high-temperature and pressure pipeline blocking construction

Examples

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Embodiment Construction

[0016] The two-opening plugging head for high temperature and high pressure pipeline plugging construction is composed of plugging head and transmission parts. Refer to Figure 1-4, where:

[0017] The plug is two oppositely convex strip arc plates 9, and the longitudinal oblique rib 7 is fixed in the center of the inner side of the strip arc plate. In addition, a longitudinal support frame 1 is respectively fixed on both sides of the inner side of the strip-shaped arc plate, and the support frame is also in the shape of an isosceles triangle. The bar-shaped arc plate is made of high-quality carbon structural steel as the skeleton, and a sealing layer 3 of rubber, aluminum, lead, copper or polyurea is fixed on the outer surface of the skeleton.

[0018] The transmission part is composed of a lead screw 6 with reverse thread and two tapered thread lock nuts 4 screwed on it. The plug and the transmission part are slidingly connected with the "T" groove on the surface of the tap...

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Abstract

The invention includes stop ends and a driving member. The said ends are two strip-type circular arc plates and the said driving member consists of two tapered lock nuts. The tapered lock nuts are slide-jointed in the T-shape groove between the stop ends and the driving member via longitudinal oblique ribs fixed in side of the strip-type circular arc plates. The frame of the inventive plugging head is two semi-circles and its diameter is the same as the diameter in the pipeline opening. The frame can stand the high pressure in the pipeline because of no plastic deformation and rigid sealing and can select to change the surface sealant materials, such as rubber, lead, luminium, copper and so on, according to the claim for pressure and temperature in the construction pipeline.

Description

【Technical field】 [0001] The invention relates to the sealing construction technology of petroleum, chemical, natural gas and other transmission pipelines, in particular to a special component for the sealing construction of high-pressure and high-temperature pipelines, a double-opening sealing head. 【Background technique】 [0002] In the prior art, the single-open support rod cylinder type plugging head is generally used for the plugging construction of non-stop pipelines for pipelines with different media such as petroleum, chemical industry, and natural gas in use. At this time, the plug is connected with the pair of nuts by a plurality of support rods, and the skeleton is expanded by the rotation of the lead screw like an umbrella, and the rubber sealing layer is extruded to form a sealed state with the pipeline. This structure has some disadvantages such as: the skeleton must be plastically deformed when multiple support rods expand, and the required plastic deformation...

Claims

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Application Information

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IPC IPC(8): F16L55/10
Inventor 马耀
Owner 马耀
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