Installation of cured in place liners with air and flow-through steam to cure

A technology of lining and steam, applied in the direction of pipe elements, mechanical equipment, pipes/pipe joints/fittings, etc., which can solve the problems of limiting the length of air turning, increasing energy and labor costs, etc.

Inactive Publication Date: 2008-12-24
INA ACQUISITION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0023] The second force (2) varies greatly between water and air turns and thus limits the length of the air turns
[0026] While existing methods of curing using hot water offer the various advantages described above, there is a tendency to increase energy and labor costs, as well as disadvantages involving the use of large quantities of water that may carry Styrene

Method used

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  • Installation of cured in place liners with air and flow-through steam to cure
  • Installation of cured in place liners with air and flow-through steam to cure
  • Installation of cured in place liners with air and flow-through steam to cure

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Embodiment Construction

[0047] FIG. 1 shows a typical highway culvert 11 with existing passageway 12 that traverses beneath highways 13 and 14 . FIG. 1 shows an upper opening 16 and a lower opening 17 . At the job site, moderately refrigerated trucks 19 provide the resin-impregnated liner which is pulled in from the upper opening 16 by a winch 43 at the lower open end 17 . Liner 18 is wrapped with a polypropylene sleeve to prevent damage and control longitudinal stretch.

[0048] Flexible cure-in-place liners of the type known in the related art are made of at least one layer of flexible resin-impregnable material, such as a felt layer or the like with an outer impermeable polymeric film layer. The felt and membrane layers are sewn along the seam lines to form the tubular inner lining. In order to ensure the impermeability of the inner liner, a thermoplastic film in strips is placed on the seam line or a compatible extrusion material is extruded on the seam line. Such liners are disclosed in detai...

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Abstract

The invention provides a method for non-excavation and rehabilitation of an existing pipeline by turning a flexible resin impregnated tube, which includes steps of: providing a flexible resin impregnated tube supply source; turning the flexible resin impregnated tube into an existing pipe; connecting punching flat tube to an end of the turned flexible resin impregnated tube; arranging a drainage device for steam flowing the turned flexible resin impregnated tube; guiding the steam into the flat tube and the interior of the turned flexible resin impregnated tube, and enabling the steam to flow the drainage device; curing the resin in the flexible resin impregnated tube; in a horizontal state forming a plurality of nozzles along the flat tube length around the circumference of the flat tube so as to distribute the steam along the length of the turned flexible resin impregnated tube; and along the flat tube length, spraying the steam to the bottom of the turned flexible resin impregnated tube through the plurality of the nozzles, and spraying to any condensate liquid pond for forming the turned flexible resin impregnated tube bottom.

Description

[0001] This application is a divisional case of the Chinese invention patent application with the application date of November 2, 2005, the title of the invention is "Installation method of in-situ curing lining using air and flowing steam curing", and the patent application number is 200580045775.X Application. [0002] Cross-Referenced Related Applications [0003] This application is based on co-pending Provisional Application No. 60 / 624,841, filed November 3, 2004. technical field [0004] The present invention relates to a method of installation of a cured-in-place liner by pulling a resin-impregnated liner into an existing pipeline, utilizing the expansion of the resin-impregnated bladder (inflation bladder), and then use the continuous flow of steam to cure the resin without pressure loss. The method and device are particularly suitable for installation environments of large-diameter cured-in-place linings. Background technique [0005] It is generally known that e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/163F16L55/18
Inventor 富兰克林·托马斯·德赖弗王维平约瑟夫·M.·夸纳
Owner INA ACQUISITION
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