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CN-224229561-U - Cladding structure for large-caliber central heat-insulating pipe of middle-deep geothermal well

CN224229561UCN 224229561 UCN224229561 UCN 224229561UCN-224229561-U

Abstract

The utility model discloses a cladding structure for a large-caliber central heat-insulating pipe of a middle-deep geothermal well, which belongs to the field of large-caliber central heat-insulating pipes and comprises an aerogel layer, wherein one layer of aluminum foil is arranged on the aerogel layer as a base layer, 3-10 layers of base layers are arranged on the aerogel layer to form a multi-layer cladding, two opposite sides of the multi-layer cladding are provided with side alkali-free glass fiber cloth belts, and the side alkali-free glass fiber cloth belts are wrapped and fixed on two opposite sides of the multi-layer cladding to form the cladding structure. According to the utility model, the aerogel layer is used as a base layer, and the heat insulation performance is enhanced by a mode of overlapping aluminum foil and multiple layers, so that the heat insulation effect of the coating structure is greatly improved while the softness and the coating efficiency are maintained. The use of the glass fiber cloth belt with the side edge without alkali not only strengthens the structural stability of the coating, but also effectively prevents the leakage of powder and fiber, thereby reducing the potential harm to the environment and human body.

Inventors

  • XU FANGJUN
  • CHEN QIANLONG
  • MA ZHI

Assignees

  • 西安润威恒泰地热管技术有限公司

Dates

Publication Date
20260512
Application Date
20250625

Claims (7)

  1. 1. A cladding structure for a large-caliber central heat-insulating pipe of a middle-deep geothermal well is characterized by comprising an aerogel layer (1), wherein one layer of aluminum foil (2) is arranged on the aerogel layer (1) as a base layer, 3-10 layers of base layers are arranged to form a multi-layer cladding, two opposite sides of the multi-layer cladding are provided with side alkali-free glass fiber cloth belts (4), and the side alkali-free glass fiber cloth belts (4) are wrapped and fixed on two opposite sides of the multi-layer cladding to form a cladding structure (7).
  2. 2. The cladding structure for the large-caliber central heat-insulating pipe of the middle-deep geothermal well, which is disclosed in claim 1, is characterized in that the middle part of the cladding structure (7) is sewn with the side alkali-free glass fiber cloth belts (4) in the parallel direction to form a middle sewing thread (9), and the middle alkali-free glass fiber cloth belts (10) are arranged at the middle sewing thread (9).
  3. 3. The cladding structure for the large-caliber central heat preservation pipe of the middle-deep geothermal well, which is disclosed in claim 1, is characterized in that a plurality of through holes (3) are vertically formed in the cladding structure (7).
  4. 4. The coating structure for the large-caliber central heat preservation pipe of the middle-deep geothermal well, as claimed in claim 1, wherein the number of layers of the coating is 5.
  5. 5. The structure of the cladding for the large-caliber central insulating pipe of the middle-deep geothermal well according to claim 1, wherein the side alkali-free glass fiber cloth belts (4) are wrapped and sewn on the opposite sides of the multi-layer cladding.
  6. 6. The coating structure for the large-caliber central heat-insulating pipe of the middle-deep geothermal well, as claimed in claim 5, wherein the cross section of the multi-layer coating is of a rectangular structure, and the side alkali-free glass fiber cloth belts (4) are wrapped and sewn on the opposite long sides of the multi-layer coating.
  7. 7. The coating structure for the large-caliber central heat preservation pipe of the middle-deep geothermal well according to claim 2 or 5, wherein the sewing needle distance during sewing is larger than 5mm.

Description

Cladding structure for large-caliber central heat-insulating pipe of middle-deep geothermal well Technical Field The utility model belongs to the field of large-caliber central heat-insulating pipes, and particularly relates to a cladding structure for a large-caliber central heat-insulating pipe of a middle-deep geothermal well. Background The central heat insulating pipe is one kind of pipeline system for conveying heat medium, such as hot water, steam, etc. and has the core function of reducing heat loss and protecting pipeline body and outer environment. The central insulating pipe is generally composed of a three-layer structure, namely a working pipe (inner layer), an insulating layer (middle layer) and an outer protecting pipe (outer layer). The central heat-insulating pipe mainly reduces heat transfer between the medium in the pipeline and the external environment through the heat-insulating layer, so that the temperature of the medium is kept stable. When the heat medium is conveyed in the working steel pipe, the heat insulation layer can effectively prevent heat from radiating outwards, reduce heat loss and ensure that the heat loss of the medium in the conveying process is minimum, and when the cold medium is conveyed, the heat insulation layer can prevent external heat from being transferred into the pipeline, so that the temperature of the medium is prevented from rising, and the heat insulation and cold insulation effects are achieved. At present, heat insulation layers are generally made of heat insulation materials such as hard polyurethane foam plastic, rock wool, glass wool or aluminum acid, the heat insulation materials are single, the heat insulation effect is poor, dust problems exist in the hard polyurethane foam plastic, the rock wool and the aluminum acid, powder flies in the air to influence the environment and the human health, and in the glass wool, fibers are easy to inhale into the human body, so that occupational diseases are caused. Disclosure of utility model In order to overcome the defects of the prior art, the utility model aims to provide a cladding structure for a large-caliber central heat-insulating pipe of a middle-deep geothermal well, which solves the problems that the existing heat-insulating layer is single in material and poor in heat-insulating effect, and powder and fiber simultaneously influence the environment and human health. The utility model is realized by the following technical scheme: A cladding structure for a large-caliber central heat-insulating pipe of a middle-deep geothermal well comprises an aerogel layer, wherein one layer of aluminum foil is arranged on the aerogel layer as a base layer, 3-10 layers of base layers are arranged on the aerogel layer to form a multi-layer cladding, two opposite sides of the multi-layer cladding are provided with side alkali-free glass fiber cloth belts, and the side alkali-free glass fiber cloth belts are wrapped and fixed on two opposite sides of the multi-layer cladding to form the cladding structure. Further, between the side alkali-free glass fiber cloth belts, the middle part of the cladding structure is sewn with the side alkali-free glass fiber cloth belts in the parallel direction to form a middle sewing thread, and the middle sewing thread is provided with the middle alkali-free glass fiber cloth belts. Further, the cladding structure is vertically provided with a plurality of through holes. Further, the multilayer coating is preferably 5 layers. Further, the side alkali-free glass fiber cloth tape is wrapped and sewn on the opposite sides of the multi-layer wrapping. Further, the cross section of the multilayer coating is of a rectangular structure, and the side alkali-free glass fiber cloth belt wraps the opposite long sides of the multilayer coating. Further, the sewing needle distance during the sewing is more than 5mm. Compared with the prior art, the utility model has the following beneficial effects: According to the utility model, the aerogel layer is used as a base layer, and the heat insulation performance is enhanced by a mode of overlapping aluminum foil and multiple layers, so that the heat insulation effect of the coating structure is greatly improved while the softness and the coating efficiency are maintained. In addition, the use of the side alkali-free glass fiber cloth belt not only strengthens the structural stability of the coating, but also effectively prevents the leakage of powder and fibers, thereby reducing the potential harm to the environment and human body. Therefore, the composite body with the coating structure provided by the utility model is soft, convenient to use, high in coating efficiency, free of powder leakage, free of pollution to the environment, capable of reducing the risk of occupational diseases, and capable of improving the heat insulation effect. Drawings Fig. 1 is a schematic diagram of the overall structure of the present utility model. Fig. 2 is a schemat