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Prefabricated casing for insulating, sealing and waterproofing

A technology of waterproof casing and sealed pipe, applied in the direction of heat preservation, protection of pipes and pipe elements through heat insulation, etc., can solve problems affecting the heat preservation performance of thermal pipes, reduce the service life of pipe networks, accidental water ingress of heat preservation materials, etc., and achieve structural Simple, prolonging the service life, and ensuring the effect of heat preservation performance

Active Publication Date: 2011-07-27
大连益多管道有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When laying direct-buried thermal pipelines in high water level areas or river crossings, the traditional method is: in the insulation pipe manufacturing unit, the standard length of working steel pipes, insulation materials and outer casings are made into an integrated structure according to the standard (see figure 1 ), that is, the outer wall of the working steel pipe is covered with insulating material, and the outer wall of the insulating material is covered with an outer casing. This kind of integrated structure of the insulating structure and the working pipe has some deficiencies in the on-site assembly and installation: due to the high water level or the section where there is more water , it is difficult to discharge cleanly, which eventually leads to accidental water ingress into the insulation material at the pipe interface, which affects the thermal insulation performance of the thermal pipeline, increases the heat loss of the pipe network, and reduces the service life of the pipe network

Method used

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  • Prefabricated casing for insulating, sealing and waterproofing
  • Prefabricated casing for insulating, sealing and waterproofing
  • Prefabricated casing for insulating, sealing and waterproofing

Examples

Experimental program
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Effect test

Embodiment 1

[0015] like figure 2 In the prefabricated thermal insulation and sealing waterproof casing shown, the inner casing 9 is set inside the outer casing 1, and the two ends of the inner casing 9 are equipped with corrugated sealing components. 6. The second ring 7 is welded and connected; the two ends of the inner sleeve 9 are respectively welded and connected to the corrugated seal assembly through the second ring; the two corrugated seal assemblies are respectively welded to the outer sleeve through a ring; between the ring 4 and the first ring 4; the thermal insulation material 8 is filled in the space formed by two corrugated sealing components, the outer sleeve and the inner sleeve; the two ends of the inner sleeve are respectively welded to a limit ring 2 to ensure that the inner sleeve is at the same time The relative position of the outer casing; the total length of the inner casing is less than the total length of the outer casing (the outer casing is the standard length)...

Embodiment 2

[0017] like image 3 As shown in the prefabricated thermal insulation and sealing waterproof casing, the inner casing 9 is welded and connected by two inner casings one and one inner casing two, and hard chrome plating is carried out within the sealing length range of the two inner casings one outer wall ( Hard chrome plating effect: enhance the anti-corrosion performance of the sealing surface); the sealing assembly is installed at both ends of the inner casing 9, the sealing assembly is a packing sealing assembly, and the sealing assembly is composed of the sealing tube 12, the first ring 4, and the second ring 7 respectively (the sealing assembly function: to ensure the relative sliding between the inner casing and the outer casing to absorb the expansion and contraction caused by thermal expansion and contraction); the tail end of the sealing tube 12 has a stop, and the second ring 7 is installed inside the sealing tube stop. The outer wall of the ring 4 has a seam, which ...

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Abstract

The invention relates to a directly buried thermal pipeline with the working medium being steam or hot water, in particular to an insulating jacket structure thereof. The invention adopts the following technical scheme: with regard to a prefabricated casing for insulating, sealing and waterproofing, an outer casing is sleeved outside an inner casing; both ends of the inner casing are provided with telescopic sealing components; one end of the telescopic sealing component is connected with the inner casing and the other end thereof is connected with the outer casing; insulating materials are filled in the space formed by the telescopic sealing components, the inner casing and the outer casing. The invention has simple structure, the total length of which is the standard length of the single outer casing; the inner casing is sleeved in the outer casing, with total length less than that of the outer casing; the sealing components at both ends of the inner casing not only effectively sealthe insulating materials but also automatically operate relative to the outer casing in case of thermal expansion so as to carry out compensation. The invention fully plays the roles of sealing and waterproofing at the pipeline joints during installation, completely overcomes the shortcomings of the traditional structures, ensures the insulation performance of the thermal pipeline, decreases the thermal losses of the pipe network and prolongs the service life of the pipe network.

Description

1. Technical field: [0001] The invention relates to a direct-buried thermal pipeline whose working medium is steam or hot water, especially its thermal insulation jacket structure. 2. Background technology: [0002] When laying direct-buried thermal pipelines in high water level areas or river crossings, the traditional method is: in the insulation pipe manufacturing unit, the standard length of working steel pipes, insulation materials and outer casings are made into an integrated structure according to the standard (see figure 1 ), that is, the outer wall of the working steel pipe is covered with insulating material, and the outer wall of the insulating material is covered with an outer casing. This kind of integrated structure of the insulating structure and the working pipe has some deficiencies in the on-site assembly and installation: due to the high water level or the section where there is more water , It is difficult to drain cleanly, which eventually leads to accid...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L59/147F16L51/02
Inventor 史朝旭苏士有孙永林
Owner 大连益多管道有限公司