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Fireproof and thermal insulating nylon hose and method for production thereof

A hose and nylon technology, used in the field of liquid or gas conveying pipes, can solve the problems of unsatisfactory heat insulation and flame retardant effect and bending radius, low pressure resistance, heat resistance and fire resistance, etc., to reduce the weight of the pipe body and the handling Worker strength, good high pressure resistance, and the effect of reducing the bending radius

Inactive Publication Date: 2006-11-22
杨世奉 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the conveying hoses used in metallurgy, chemical industry and other industries are mostly rubber hoses or polyurethane hoses. In order to increase the compressive strength of the hoses, a metal braided reinforcing layer is added in the middle of the hoses, such as the polyurethane reinforced soft hose disclosed in Chinese patent 03121929.2. There are 1-3 layers of braided steel wire layers in the middle of the polyurethane hose, and each steel wire layer needs to be bonded to each other with an adhesive. The hose with this structure is complex in process and relatively small in pressure resistance. Combustion effect, not heat and fire resistance, restricting its scope of use
Another example is the fire-resistant and heat-insulated hose disclosed in Chinese patent 92104811. Its structure is that a rubber inner tube is provided with a fire-resistant paint layer, a fire-resistant flame-retardant fabric layer and a weaving layer, and the last layer is a protective sheath layer, namely hot-melt rubber, fire-resistant paint or Corrugated pipe, although this kind of hose has a certain heat insulation and fire resistance effect, it has the following defects: the inner core pipe and the sheath are not resistant to high pressure, easy to be corroded, and easy to age. Unsatisfactory, and the pipe wall is thick, self-heavy, and the production cost is high
Both of the above two patents have unreasonable preparation of layers, which makes it difficult to meet the requirements of high temperature, high pressure and bending.

Method used

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  • Fireproof and thermal insulating nylon hose and method for production thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0016] Example 1, such as figure 1 As shown, the pipe body of the present invention consists of nylon pipe layer 1, wire winding layer 2, heat-insulating and flame-retardant material layer 3, metal braiding layer 4, refractory fiber cloth layer 5 and polyurethane flame retardant layer 6 from inside to outside.

[0017] The preparation method of the present invention is as follows:

[0018] A. Production of inner core tube: The production method is basically the same as that of ordinary plastic tubes, that is, take nylon 6 raw material particles and dry them at 110-120°C for 2 hours, add them to the hopper of the extruder, start the power unit, and extrude at 180°C. The vacuum device cools the water tank, and leads out the hose through the traction device, and the thickness of the pipe wall is 5mm.

[0019] B. Wrapping metal wire: First, use a plying machine to ply according to the number of shares required, and determine the diameter of the metal wire plying root data. The ge...

Embodiment 2

[0024] Example 2, such as figure 1 As shown, the pipe body of the present invention consists of nylon pipe layer 1, wire winding layer 2, heat-insulating and flame-retardant material layer 3, metal braiding layer 4, refractory fiber cloth layer 5 and polyurethane flame retardant layer 6 from inside to outside.

[0025] The preparation method of the present invention is as follows:

[0026] A. Production of inner core tube: The production method is basically the same as that of ordinary plastic tubes, that is, take nylon 10 raw material particles and dry them at 110-120°C for 3 hours, add them to the hopper of the extruder, start the power unit, and extrude at 200°C. The vacuum device cools the water tank, and leads out the hose through the traction device, and the thickness of the pipe wall is 3mm.

[0027] B. Wrapping metal wire: First, use a plying machine to ply according to the number of shares required, and determine the diameter of the metal wire plying root data. The g...

Embodiment 3

[0032] Example 3, such as figure 1 As shown, the pipe body of the present invention consists of nylon pipe layer 1, wire winding layer 2, heat-insulating and flame-retardant material layer 3, metal braiding layer 4, refractory fiber cloth layer 5 and polyurethane flame retardant layer 6 from inside to outside.

[0033] The preparation method of the present invention is as follows:

[0034] A. Production of inner core tube: The production method is basically the same as that of ordinary plastic tubes, that is, take monomer cast nylon raw material particles and dry them at 110-120°C for 2.5 hours, add them to the hopper of the extruder, start the power unit, and extrude at 190°C , through the cooling water tank of the vacuum device, and lead out the hose through the traction device, the thickness of the pipe wall is 2mm.

[0035] B. Wrapping metal wire: First, use a plying machine to ply according to the number of shares required, and determine the diameter of the metal wire pl...

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Abstract

The invention discloses a fireproof thermal-insulated nylon tube, which comprises a tube chamber and a tube body. It is characterized in that: form inner to outer, the tube body comprises a nylon layer (1), a metallic wire winded layer (2), a thermal-insulated fireproof layer (3), a metal woven layer (4), a fireproof fiber cloth layer (5), and a polyurethane combustion inhibitor layer (6). The invention is resistant to abrasion, heat, corrosion, etc, while it can prolong the service life of tube; and it uses fireproof thermal-insulated material, to reduce the thickness of tube.

Description

technical field [0001] The invention relates to a liquid or gas conveying pipe, in particular to a fire-resistant and heat-insulated nylon hose and a production method thereof. Background technique [0002] At present, the conveying hoses used in metallurgy, chemical industry and other industries are mostly rubber hoses or polyurethane hoses. In order to increase the compressive strength of the hoses, a metal braided reinforcing layer is added in the middle of the hoses, such as the polyurethane reinforced soft hose disclosed in Chinese patent 03121929.2. There are 1-3 layers of braided steel wire layers in the middle of the polyurethane hose, and each steel wire layer needs to be bonded to each other with an adhesive. The hose with this structure is complex in process and relatively small in pressure resistance. Combustion effect, not heat and fire resistance, restricting its scope of use. Another example is the fire-resistant and heat-insulated hose disclosed in Chinese p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K11/08B32B5/14B32B27/34B32B33/00B32B37/00
Inventor 杨世奉杨伟
Owner 杨世奉
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