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Heat-preservation compound glass steel tube and forming process thereof

A glass steel pipe and thermal insulation composite technology, which is applied in the direction of pipes, rigid pipes, pipes/pipe joints/fittings, etc., can solve the problems of high requirements on pipeline manufacturing process and lack of thermal insulation effect, and achieves good thermal insulation performance and combination of inside and outside. Enhanced force and long service life

Inactive Publication Date: 2014-01-01
王友余
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The latter two methods have higher requirements on the pipeline manufacturing process and cannot achieve a better heat preservation effect.

Method used

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  • Heat-preservation compound glass steel tube and forming process thereof
  • Heat-preservation compound glass steel tube and forming process thereof
  • Heat-preservation compound glass steel tube and forming process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Insulation composite glass steel pipes, made of glass steel pipes, such as Figure 1~3 As shown, the glass steel pipes are respectively an inner winding layer 1, an insulation layer 2, and an outer protective layer 3 from the inside to the outside. First, the hoop glass fiber yarn 4 and the longitudinal glass fiber yarn 5 are cross-laid into a glass mesh, and resin is brushed on the glass mesh. , repeat the above steps until the thickness requirements of the FRP are met, on this basis, further processing can make the inner winding layer 1 . Such as image 3 As shown, the hoop glass fiber yarns 4 in the inner winding layer 1 are distributed along the circumference of the pipe, and the longitudinal glass fiber yarns 5 are parallel to the axis of the glass steel pipe.

[0033] Such as Figure 4 As shown, the insulation layer 2 is formed by using polyurethane foam as the base material, supplemented with a small amount of resin, mixed and coated on the outer wall of the in...

Embodiment 2

[0036] The forming process of thermal insulation composite glass steel pipe is shown in Table 1. The specific production process is as follows:

[0037] Mold preparation and glue dispensing: First, paint a resin mixture consisting of 55% (weight percent) epoxy resin and 45% (weight percent) polyamide on the mold, after 12 hours at room temperature until it is not sticky, scrape off the resin Mixture putty.

[0038] Making the inner winding layer: Lay a layer of fiber fabric cut according to the requirements on it, that is, hoop glass fiber yarn, press the fabric with a brush, roller or scraper to make it evenly impregnated and remove air bubbles, and then coat Brush the resin mixture and lay the second layer of fiber fabric, that is, the longitudinal glass fiber yarn; repeat the above process until the required thickness is reached; then, heat and solidify at a temperature of 60°C and a pressure of 0.1MPa and then cool to room temperature. After demolding, the fiberglass inne...

Embodiment 3

[0041] The forming process of thermal insulation composite glass steel pipe, the specific production process is as follows:

[0042] Mold preparation and glue dispensing: First, paint a resin mixture consisting of 60% (weight percent) epoxy resin and 40% (weight percent) polyamide on the mold, after 18 hours at room temperature until it is not sticky, scrape off the resin Mixture putty.

[0043] Making the inner winding layer: Lay a layer of fiber fabric cut according to the requirements on it, that is, hoop glass fiber yarn, press the fabric with a brush, roller or scraper to make it evenly impregnated and remove air bubbles, and then coat Brush the resin mixture and lay the second layer of fiber fabric, that is, the longitudinal glass fiber yarn; repeat the above process until the required thickness is reached; then, heat and solidify at a temperature of 100°C and a pressure of 0.1MPa and then cool to room temperature. After demolding, the fiberglass inner winding layer is ...

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Abstract

The invention provides a heat-preservation compound glass steel tube which is composed of a glass steel tube body. An inner winding layer, a heat preservation layer and an outer protection layer are arranged on the glass steel tube body from inside to outside, the inner winding layer is formed by laying circumferential glass fiber yarns and longitudinal glass fiber yarns in a crossed mode, the heat preservation layer is formed by spreading and solidifying foam colloidal particles on the outer wall of the inner winding layer, the outer protection layer is formed by arranging a metal band on the outer wall of the heat preservation layer in a winding mode, and an included angle a is formed by the metal band and the axis of the glass steel tube body. Meanwhile, the invention provides a forming process of the heat-preservation compound glass steel tube. Resin is used as base materials and the glass fiber yarns are used as reinforcement materials to obtain the glass steel inner winding layer, then the heat preservation layer and the outer protection layer are respectively obtained, and therefore the heat-preservation compound glass steel tube is obtained. According to the heat-preservation compound glass steel tube and the forming process of the heat-preservation compound glass steel tube, the inner winding layer is adopted to enhance density, the heat preservation is used for middle heat insulation, the metal band is used for evenly winding the outer surface of the glass steel tube, the internal and external combination force is greatly enhanced, and the heat-preservation compound glass steel tube is especially suitable for liquid conveying pipelines buried underground in urban construction.

Description

technical field [0001] The invention relates to a glass steel pipe, in particular to a multilayer composite glass steel pipe forming process and a glass steel pipe produced by the process, belonging to the technical field of fiber resin compounding. Background technique [0002] Glass steel pipes are mostly used for buried use, and are prone to deflection and deformation due to the influence of covering soil, ground dynamic load, and vacuum negative pressure inside the pipe. However, pure FRP pipes are weak in flame retardancy, antistatic and rigidity. To improve the rigidity and antistatic performance of the pipeline, three methods are generally adopted: one is to simply increase the wall thickness of the pipeline, although this method can prolong the service life, but it is not economical; the other is to add reinforcing ribs to the pipe body to ensure that the pipeline The wall thickness meets the requirements of internal pressure; the third is to add steel wire mesh on ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/12
CPCF16L9/121
Inventor 王友余
Owner 王友余
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