Heat insulation structure of heat distribution pipeline

Abstract

The utility model relates to the technical field of heat insulation of heat distribution pipelines, particularly discloses a heat insulation structure of a heat distribution pipeline, and provides the following technical scheme for achieving the purpose: the heat insulation structure of the heat distribution pipeline comprises four layers of first aerogel felts, a first rubber heat preservation layer is fixedly bonded to the outer end of the first aerogel felt, a second rubber heat preservation layer is fixedly bonded to the outer side of the first rubber heat preservation layer, and a plurality of rubber elastic layers are evenly and fixedly installed between the first rubber heat preservation layer and the second rubber heat preservation layer. Four layers of first aerogel felts with the thickness of 10 mm, a first rubber heat preservation layer, a plurality of rubber elastic layers, a heat preservation cavity, a second rubber heat preservation layer, a layer of first aluminum foil cloth with the thickness of 0.2 mm, a layer of aluminum silicate cotton felt with the thickness of 60 mm, a layer of second aerogel felts 10 with the thickness of 10 mm, a layer of second aluminum foil cloth with the thickness of 0.2 mm and an aluminum thin plate with the thickness of 0.8 mm are sequentially arranged at the outer end of a pipe body from inside to outside. And the heat preservation and protection effects on the pipeline are achieved.

Description

Technical Field

[0001] This utility model relates to the field of thermal pipeline insulation technology, specifically a thermal pipeline insulation structure. Background Technology

[0002] Steam pipeline insulation is a common project in the thermal power and petrochemical industries, and its insulation effect directly affects the pipeline's operating efficiency and energy consumption.

[0003] Steam insulation pipelines can be used to transport steam with a pressure of 2.5MPa and a temperature of less than 350℃. Due to the high temperature and high pressure characteristics of the transported medium, multi-layer and composite insulation structures are usually used for the insulation construction of steam pipelines.

[0004] Existing heating pipes are mostly installed outdoors. Because they are exposed to wind, sun and rain for a long time, they will corrode severely, causing the insulation of the pipes to fail. At the same time, they are also subject to different impact forces from the outside world, which will directly damage the heating pipes, causing a large amount of heat loss and making it impossible to guarantee the insulation effect of the heating pipes. Utility Model Content

[0005] The purpose of this utility model is to provide a thermal insulation structure for thermal pipelines to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a thermal insulation structure for a thermal pipeline, comprising: an aerogel felt first, the aerogel felt first having four layers, a rubber insulation layer first fixedly bonded to the outer end of the aerogel felt first, a rubber insulation layer second fixedly bonded to the outer side of the rubber insulation layer first, a plurality of rubber elastic layers uniformly fixedly installed between the rubber insulation layer first and the rubber insulation layer second, and an insulation cavity provided between two adjacent rubber elastic layers;

[0007] Aluminum foil cloth 1 is fixedly bonded to the outside of rubber insulation layer 2. Aluminum silicate cotton felt is fixedly bonded to the outside of aluminum foil cloth 1. Aluminum foil cloth 2 is fixedly bonded to the outside of aluminum silicate cotton felt. Aerogel felt 2 is fixedly bonded to the outside of aluminum foil cloth 2. Aluminum sheet is fixedly bonded to the outside of aerogel felt 2.

[0008] Preferably, the inner end of the first aerogel felt is wrapped with a tube, and the thickness of both the first aerogel felt and the second aerogel felt is 10 mm.

[0009] Preferably, the thickness of both aluminum foil cloth one and aluminum foil cloth two is 0.2 mm.

[0010] Preferably, the thickness of the aluminum silicate cotton felt is 60 mm.

[0011] Preferably, the thickness of the aluminum sheet is 0.8 mm.

[0012] Preferably, the thickness of both the first rubber insulation layer and the second rubber insulation layer is 6mm.

[0013] Preferably, the horizontal longitudinal joints of the aerogel felt one, aerogel felt two, and aluminum silicate cotton felt should be located within a 45° range above and below the horizontal centerline of the pipeline.

[0014] Preferably, when the aerogel felt one, aerogel felt two, and aluminum silicate cotton felt are laid, the longitudinal seams of the same layer should be staggered, and the upper and lower layers should be overlapped. The length of the staggered and overlapped seams should not be less than 100mm.

[0015] Preferably, each piece of insulation material on the straight pipe section of the pipe body shall be bound in no less than two ways, with one binding at each end within 50mm and another binding every 200mm in the middle, and the binding shall be done layer by layer.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By sequentially installing four 10mm thick aerogel felt layers, one rubber insulation layer, several rubber elastic layers, an insulation cavity, one rubber insulation layer, one 0.2mm thick aluminum foil cloth, one 60mm thick aluminum silicate cotton felt, one 10mm thick aerogel felt layer, one 0.2mm thick aluminum foil cloth layer, and one 0.8mm thick aluminum sheet at the outer end of the pipe body from the inside out, the pipe is insulated and protected. Attached Figure Description

[0018] Figure 1 This is a schematic cross-sectional view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the joint fabric of the pipe insulation layer of this utility model;

[0020] Figure 3 A schematic diagram showing the aluminum silicate cotton felt being processed into a shrimp-waist shape for the pipeline bend section of this utility model.

[0021] Figure 4 A schematic diagram showing the aerogel felt for the elbow section of this utility model cut into several equal parts;

[0022] Figure 5 This is a schematic diagram showing that adjacent longitudinal seams of the metal protective layer of this utility model should be staggered.

[0023] In the diagram: 1. Pipe body; 2. Aerogel felt one; 3. Rubber insulation layer one; 4. Rubber elastic layer; 5. Insulation cavity; 6. Rubber insulation layer two; 7. Aluminum foil cloth one; 8. Aluminum silicate cotton felt; 9. Aluminum foil cloth two; 10. Aerogel felt two; 11. Aluminum sheet. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Please see Figure 1-Figure 5 This utility model provides a technical solution: a thermal insulation structure for a thermal pipeline, comprising: an aerogel felt 2, which has four layers, each 10mm thick; the inner ends of the four layers of aerogel felt 2 are wrapped around a pipe body 1; a rubber insulation layer 3 is fixedly bonded to the outer ends of the aerogel felt 2; a rubber insulation layer 6 is fixedly bonded to the outer side of the rubber insulation layer 3; both the rubber insulation layer 3 and the rubber insulation layer 6 have a thickness of 6mm; the rubber insulation layer 3 and the rubber insulation layer 6 support the rubber elastic layer 4; several rubber elastic layers 4 are uniformly fixed between the rubber insulation layer 3 and the rubber insulation layer 6; an insulation cavity 5 is provided between two adjacent rubber elastic layers 4; the insulation cavity 5 slows down heat transfer and has an insulation function; and when the rubber elastic layer 4 is subjected to external pressure, it will deform, which can buffer and protect the pipeline and the insulation structure.

[0026] An aluminum foil cloth 7 is fixedly bonded to the outside of the rubber insulation layer 2 6. An aluminum silicate cotton felt 8 is fixedly bonded to the outside of the aluminum foil cloth 7. The aluminum silicate cotton felt 8 has a thickness of 60mm. An aluminum foil cloth 9 is fixedly bonded to the outside of the aluminum silicate cotton felt 8. The thickness of both aluminum foil cloth 7 and aluminum foil cloth 9 is 0.2mm. An aerogel felt 10 is fixedly bonded to the outside of the aluminum foil cloth 9. The thickness of aerogel felt 10 is 10mm. An aluminum sheet 11 is fixedly bonded to the outside of aerogel felt 10. The aluminum sheet 11 has a thickness of 0.8mm. The aluminum sheet 11 serves to protect the inner insulation structure.

[0027] The horizontal longitudinal joints of aerogel felt 12, aerogel felt 20, and aluminum silicate cotton felt 8 should be located within a 45° range above and below the horizontal centerline of the pipeline.

[0028] like Figure 2 As shown, when aerogel felt 12, aerogel felt 20 and aluminum silicate cotton felt 8 are laid, the longitudinal joints of the same layer should be staggered, and the upper and lower layers should be overlapped. The length of the staggered and overlapped joints should not be less than 100mm.

[0029] like Figure 3As shown, the aluminum silicate cotton felt 8 at the pipeline bend is processed into a shrimp waist shape and spliced ​​to ensure a tight joint.

[0030] like Figure 4 As shown in the figure, aerogel felt 12 and aerogel felt 20 are cut into several equal parts along the width direction of the elbow as shown in the figure below. The cutting length is 2-3 cm from the center line to the side length. Then, the center line of the processed aerogel felt 12 and aerogel felt 20 are tightly attached to the outer diameter of the elbow. Construction starts from the tangent of the elbow. First, the first section of the waist is tied and fixed with stainless steel wire. Then, each section is tied and fixed. Some trimming is made according to the site conditions.

[0031] Each piece of insulation material on the straight pipe section of pipe body 1 shall be bundled in no less than 2 times. There shall be one bundle within 50mm at both ends, and one bundle every 200mm in the middle, and the bundles shall be bundled layer by layer. The binding material can be stainless steel wire or stainless steel strip.

[0032] Before construction of aluminum foil cloth 1 (7) and aluminum foil cloth 2 (9), the perimeter of the installed aerogel felt and aluminum silicate cotton felt (8) insulation layer should be measured, and the cutting size should allow for the overlap of the joints (not less than 50mm).

[0033] When wrapping aluminum foil cloth 17 and aluminum foil cloth 29, the aluminum foil side should face inward to ensure it adheres tightly to the insulation layer without defects such as air pockets, folded edges, or wrinkles. The longitudinal seams should be fixed with heat-resistant aluminum foil tape.

[0034] The circumferential overlap between two pieces of aluminum foil cloth (7) or two pieces of aluminum foil cloth (9) should not be less than 50 mm.

[0035] like Figure 5 As shown, adjacent longitudinal seams of aluminum sheet 11 should be staggered to form intersecting parallel straight lines. The staggered distance should preferably be 100mm.

[0036] When the metal protective layer is circumferentially overlapped, the overlap amount should not be less than 50mm; when the metal protective layer is longitudinally overlapped, the overlap amount should not be less than 30mm, and the upper edge should overlap the lower edge.

[0037] Fixing of aluminum sheet 11: When the longitudinal seam overlaps, use stainless steel straps to tie and fix it. Both ends of each protective layer should be fixed, and the spacing of the fixing in the middle should be 150mm to 200mm.

[0038] Prefabrication and installation of aluminum sheet 11 for elbow:

[0039] ① Aluminum sheet 11 should adopt a segmented shrimp-shaped elbow; the number of segments of the shrimp-shaped elbow should comply with the specifications.

[0040] ② When installing the protective layer of the shrimp waist bend, the longitudinal interface adopts the nail form, and the circumferential interface can adopt the overlapping or interlocking form.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermal insulation structure for a heat pipe, comprising: Aerogel felt 1 (2), aerogel felt 1 (2) is provided with four layers, characterized in that: a rubber insulation layer 1 (3) is fixedly bonded to the outer end of the aerogel felt 1 (2), a rubber insulation layer 2 (6) is fixedly bonded to the outer side of the rubber insulation layer 1 (3), a number of rubber elastic layers (4) are uniformly fixedly installed between the rubber insulation layer 1 (3) and the rubber insulation layer 2 (6), and an insulation cavity (5) is provided between two adjacent rubber elastic layers (4); Aluminum foil cloth 1 (7) is fixedly bonded to the outside of rubber insulation layer 2 (6), aluminum silicate cotton felt (8) is fixedly bonded to the outside of aluminum foil cloth 1 (7), aluminum foil cloth 2 (9) is fixedly bonded to the outside of aluminum silicate cotton felt (8), aerogel felt 2 (10) is fixedly bonded to the outside of aluminum foil cloth 2 (9), and aluminum sheet (11) is fixedly bonded to the outside of aerogel felt 2 (10).

2. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: The inner end of the first (2) of the four layers is wrapped with a tube (1), and the thickness of the first (2) and the second (10) of the aerogel is 10 mm.

3. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: The thickness of both aluminum foil cloth one (7) and aluminum foil cloth two (9) is 0.2 mm.

4. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: The thickness of the aluminum silicate cotton felt (8) is 60 mm.

5. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: The thickness of the aluminum sheet (11) is 0.8 mm.

6. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: The thickness of both the first rubber insulation layer (3) and the second rubber insulation layer (6) is 6 mm.

7. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: The horizontal longitudinal joints of the aerogel felt one (2), aerogel felt two (10) and aluminum silicate cotton felt (8) should be arranged within a 45° range above and below the horizontal center line of the pipeline.

8. The thermal insulation structure for a heat pipe according to claim 1, characterized in that: When the aerogel felt 1 (2), aerogel felt 2 (10) and aluminum silicate cotton felt (8) are laid, the longitudinal seams of the same layer should be staggered, and the upper and lower layers should be pressed together. The length of the staggered and pressed seams should not be less than 100mm.

9. A thermal insulation structure for a heat pipe according to claim 2, characterized in that: The insulation product on the straight pipe section of the pipe body (1) shall be bound in no less than 2 times. There shall be 1 binding within 50mm at both ends, and 1 binding every 200mm in the middle, and binding layer by layer.

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