Composite prefabricated integrated heat-insulating pipe

Abstract

The utility model belongs to the technical field of heat preservation, concretely relates to a composite prefabricated integrated heat preservation pipe, including inner tube and outer sleeve, the outer sleeve is equipped on the inner tube, the length of inner tube is longer than the length of outer sleeve, the inner tube and outer sleeve between fill with heat insulation layer, the length of heat insulation layer is less than the length of inner tube, heat insulation layer includes spraying layer and foaming layer. The utility model has the advantages of good heat preservation effect.

Description

Technical Field

[0001] This utility model belongs to the field of thermal insulation technology, specifically relating to a composite prefabricated integrated thermal insulation pipe. Background Technology

[0002] Thermal insulation pipes are tubular materials or systems used to insulate pipelines and their internal media, with the core purpose of reducing heat exchange between the media inside the pipeline and the external environment. They are mainly used in industrial fields such as centralized heating systems, petrochemicals, and refrigeration systems. Existing thermal insulation pipes mostly have a single insulation layer structure, resulting in less than ideal insulation performance. Furthermore, the flat ends of the insulation layer lead to significant heat exchange at the joint when two insulated pipes are connected, further reducing insulation performance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a composite prefabricated integrated insulation pipe to improve the insulation effect.

[0004] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0005] A composite prefabricated integrated insulation pipe includes an inner tube and an outer tube, wherein the outer tube is sleeved on the inner tube, and the length of the inner tube is greater than the length of the outer tube; a heat insulation layer is filled between the inner tube and the outer tube, and the length of the heat insulation layer is less than the length of the inner tube, wherein the heat insulation layer includes a sprayed layer and a foamed layer.

[0006] In the composite prefabricated integrated insulation pipe provided by this utility model, preferably, the length of the sprayed coating layer is less than the length of the inner tube, but greater than the length of the outer tube.

[0007] In the composite prefabricated integrated insulation pipe provided by this utility model, more preferably, the length of the foaming layer is less than the length of the outer casing.

[0008] In the composite prefabricated integrated insulation pipe provided by this utility model, more preferably, a support member is provided on the sprayed coating layer, and the support member is arranged in a ring on the inner pipe.

[0009] In the composite prefabricated integrated insulation pipe provided by this utility model, more preferably, the support member includes a support block and a connecting strip, and the support block is fixed on the connecting strip.

[0010] In the composite prefabricated integrated insulation pipe provided by this utility model, in a further preferred embodiment, the outer casing is provided with multiple injection ports.

[0011] In the composite prefabricated integrated insulation pipe provided by this utility model, more preferably, the thickness ratio of the sprayed coating layer to the foamed layer is 7:3 to 8:2.

[0012] In the composite prefabricated integrated insulation pipe provided by this utility model, the outer casing is even more preferably a spiral duct.

[0013] In the composite prefabricated integrated insulation pipe provided by this utility model, the spiral duct is preferably made of color steel plate, aluminum plate or stainless steel plate.

[0014] By employing the above technical solution, the insulation pipe achieves better insulation performance through a two-layer insulation structure: a coating layer on the inner tube, an outer tube over the coating layer, and a foam layer between the coating layer and the outer tube. The length of the coating layer is shorter than the inner tube, facilitating welding when connecting the two insulation pipes. The length of the outer tube is shorter than the coating layer, and the length of the foam layer is shorter than the outer tube, creating a cavity between the outer tube and the coating layer. When two insulation pipes are connected, the interfaces of the coating layer, the foam layer, and the outer tube are staggered, effectively improving the insulation effect. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model (excluding the plug);

[0017] Figure 3 This is a schematic diagram of the structure of the present invention (excluding the plug and outer sleeve).

[0018] Figure 4 This is a schematic diagram of the structure of the present invention (excluding the plug, outer sleeve and foam layer).

[0019] Figures 5 to 7 This is a schematic diagram of the structure of the plug inserted during the processing of the foam layer of this utility model;

[0020] Figure 8 for Figure 1 Cross-sectional view along the axis;

[0021] Figure 9 This is a cross-sectional view along the axis of line 5;

[0022] Figure 10 This is a schematic diagram of the support component in this utility model;

[0023] In the diagram: 1-inner tube, 2-outer tube, 3-sprayed coating layer, 4-foaming layer, 5-support block, 6-connecting strip, 7-injection port, 8-plug body, 9-sealant. Detailed Implementation

[0024] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] This embodiment provides a composite prefabricated integrated insulation pipe, such as Figures 1 to 10 As shown, it includes an inner tube 1 with an outer diameter of 89mm and an outer tube 2 with an inner diameter of 289mm. A 70mm thick insulation layer, referred to as the sprayed layer 3, is applied to the inner tube 1; this insulation layer is made of glass wool. A 50mm length is left uncoated at both ends of the inner tube 1 for welding when connecting two insulation tubes. Figure 4 As shown, two sets of support members are fixedly installed on the sprayed coating layer 3, with the support members located at both ends of the sprayed coating layer 3. Figure 10 As shown, the support component includes a support block 5 and a connecting strap 6, with the support block 5 connected via the connecting strap 6. Velcro is provided at both ends of the connecting strap 6, and the support component is fixed to the sprayed coating layer 3 via the Velcro (it can also be fixed by knotting or using clips), so that the support block 5 is arranged in a ring on the sprayed coating layer 3. The support component is 100mm away from the end of the sprayed coating layer 3.

[0026] The outer duct 2 is a spiral duct made of stainless steel plate. It is fitted over the sprayed coating layer 3 and supported by a support member, with a 30mm gap between the outer duct 2 and the sprayed coating layer 3. The end of the outer duct 2 is 50mm from the support block 5. Two injection ports 7 are provided on the outer duct 2 for injecting polyurethane foam to form a foam layer 4. For ease of processing, end caps 9 are provided at both ends of the outer duct 2. These end caps 9 can be inserted between the sprayed coating layer 3 and the outer duct 2, and contact the support block 5. After the polyurethane foaming is complete, the end caps 9 are removed, creating a cavity between the outer duct 2 and the foam layer 4 at the end of the outer duct 2. The length of the foam layer 4 is shorter than the length of the outer duct 2. This cavity between the outer duct 2 and the foam layer 4 allows the interfaces of the sprayed coating layer 3 and the foam layer 4 to be staggered at the joint when two insulation pipes are connected, achieving better insulation performance.

[0027] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A composite prefabricated integrated insulation pipe, characterized in that, It includes an inner tube and an outer tube, the outer tube being fitted onto the inner tube, the length of the inner tube being greater than the length of the outer tube; a heat insulation layer is filled between the inner tube and the outer tube, the length of the heat insulation layer being less than the length of the inner tube, the heat insulation layer including a sprayed layer and a foamed layer.

2. The composite prefabricated integrated insulation pipe according to claim 1, characterized in that, The length of the sprayed coating is less than the length of the inner tube, but greater than the length of the outer tube.

3. The composite prefabricated integrated insulation pipe according to claim 2, characterized in that, The length of the foam layer is less than the length of the outer sleeve.

4. The composite prefabricated integrated insulation pipe according to claim 3, characterized in that, A support member is provided on the sprayed coating, and the support member is arranged in a ring on the inner tube.

5. The composite prefabricated integrated insulation pipe according to claim 4, characterized in that, The support component includes a support block and a connecting belt, with the support block fixed to the connecting belt.

6. The composite prefabricated integrated insulation pipe according to claim 5, characterized in that, The outer tube has multiple injection ports.

7. The composite prefabricated integrated insulation pipe according to claim 6, characterized in that, The thickness ratio of the sprayed layer to the foamed layer is 7:3 to 8:

2.

8. The composite prefabricated integrated insulation pipe according to claim 7, characterized in that, The outer casing is a spiral duct.

9. The composite prefabricated integrated insulation pipe according to claim 8, characterized in that, The spiral duct is made of color steel plate, aluminum plate or stainless steel plate.

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