Vacuum heat insulation pipeline

Abstract

The utility model discloses a vacuum heat insulation pipeline which comprises a pipe body, a core material and a barrier film. A first blocking ring is arranged at one end of the pipe body, a second blocking ring is arranged at the other end of the pipe body, the core material is arranged on the outer side of the pipe body, one end of the core material abuts against the inner side of the first blocking ring, the other end of the core material abuts against the inner side of the second blocking ring, and the blocking film is arranged on the core material and covers the core material. One end of the barrier film is in sealed connection with the first barrier ring, and the other end of the barrier film is in sealed connection with the second barrier ring. According to the utility model, the pipe body, the core material and the barrier film are arranged, and the core material is arranged between the pipe body and the barrier film, so that the vacuum insulated panel does not need to be curled, the damage to the barrier film is small, and the thermal insulation performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum thermal insulation, in particular to a vacuum thermal insulation pipeline. Background Art

[0002] Traditional insulated pipes mostly use foam materials or thermal insulation cotton to wrap the outer wall of the pipe to achieve pipe insulation. However, the disadvantage is that the thermal insulation performance of traditional foam materials or thermal insulation cotton is low and cannot meet the application occasions with high insulation requirements.

[0003] To address this issue, patent application number 202121403319.0 discloses an insulated pipe, the outer wall of which is wrapped with a vacuum insulation panel. The outer periphery of the vacuum insulation panel is wrapped with a layer of foam material, thereby achieving thermal insulation for the pipe. However, during production, the vacuum insulation panel must be attached to the pipe body, which requires the panel to be curled into a cylindrical shape. Thicker vacuum insulation panels are not easy to curl, and curling the panel can cause damage to the barrier film, thereby affecting the thermal insulation performance. Utility Model Content

[0004] Based on the above-mentioned problems existing in the prior art, the purpose of the embodiments of the present application is to provide a vacuum insulated pipe, which is provided with a pipe body, a core material and a barrier film, and the core material is provided between the pipe body and the barrier film, so that the vacuum insulation panel does not need to be curled, the barrier film is less damaged, and the thermal insulation performance is good.

[0005] The technical solution adopted by the present application to solve its technical problem is: a vacuum insulated pipe, comprising a pipe body, a core material and a barrier film;

[0006] A first barrier ring is provided at one end of the tube body, and a second barrier ring is provided at the other end of the tube body. The core material is provided on the outside of the tube body, one end of the core material is in contact with the inner side of the first barrier ring, and the other end of the core material is in contact with the inner side of the second barrier ring. The barrier film is provided on and covers the core material, one end of the barrier film is sealed with the first barrier ring, and the other end of the barrier film is sealed with the second barrier ring.

[0007] Furthermore, the first barrier ring is a PE ring, and the second barrier ring is a PE ring.

[0008] Furthermore, the core material is centrifugal wool, ultrafine rock wool, ultrafine glass wool, or aerogel.

[0009] Furthermore, a getter and a desiccant are provided on the core material.

[0010] Furthermore, the barrier film is provided with an air extraction port for extracting air, and the barrier film is provided with a sealing barrier sheet for sealing the air extraction port.

[0011] Furthermore, an annular groove is provided on the first barrier ring, and an annular protrusion is provided on the second barrier ring.

[0012] Furthermore, a protective cover is provided outside the barrier film.

[0013] Furthermore, the tube body is in the shape of a round tube or a square tube.

[0014] The beneficial effects of the present application are as follows: when manufacturing the vacuum insulated pipe, a core material is wrapped around the outer wall of the pipe body, and one end of the core material is abutted against the inner side of the first barrier ring, and the other end of the core material is abutted against the inner side of the second barrier ring. Then, one end of the barrier film is sealed to the first barrier ring, and the other end of the barrier film is sealed to the second barrier ring. After the core material is evacuated, the barrier film is sealed to complete the manufacture of the vacuum insulated pipe. Compared with the prior art, the present invention does not require the manufactured vacuum insulation panel to be curled, making the barrier film less susceptible to damage and improving the thermal insulation performance of the vacuum insulated pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of the vacuum insulated pipeline in this application;

[0016] Figure 2 is a cross-sectional view of another vacuum insulated pipe in this application;

[0017] Figure 3 This is a schematic diagram of the structure of the tube body in this application.

[0018] Description of Reference Numerals

[0019] Tube body 1 , core material 2 , barrier film 3 , air extraction port 31 , sealing barrier sheet 32 , first barrier ring 4 , annular groove 41 , second barrier ring 5 , annular protrusion 51 , getter 6 , desiccant 7 . DETAILED DESCRIPTION

[0020] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below through specific implementation methods in conjunction with the accompanying drawings.

[0021] like Figures 1 to 3As shown, the present invention provides a vacuum insulated pipe, comprising a pipe body 1, a core material 2, and a barrier film 3. A first barrier ring 4 is provided at one end of the pipe body 1, and a second barrier ring 5 is provided at the other end of the pipe body 1. The core material 2 is provided on the outside of the pipe body 1, with one end of the core material 2 abutting the inside of the first barrier ring 4, and the other end of the core material 2 abutting the inside of the second barrier ring 5. The barrier film 3 is provided on and covers the core material 2, with one end of the barrier film 3 being sealedly connected to the first barrier ring 4, and the other end of the barrier film 3 being sealedly connected to the second barrier ring 5. A vacuum cavity is formed between the barrier film 3, the pipe body 1, the first barrier ring 4, and the second barrier ring 5, and the core material 2 is located within the vacuum cavity.

[0022] Thus, the vacuum insulated pipe involved in the present invention is manufactured by wrapping a core material 2 around the outer wall of a pipe body 1, with one end of the core material 2 abutting the inner side of a first barrier ring 4, and the other end of the core material 2 abutting the inner side of a second barrier ring 5. One end of a barrier film 3 is then sealed to the first barrier ring 4, and the other end of the barrier film 3 is then sealed to the second barrier ring 5. After the core material 2 is evacuated, the barrier film 3 is sealed, thereby completing the manufacture of the vacuum insulated pipe. Compared to the prior art, the present invention does not require the manufactured vacuum insulation panel to be curled, making the barrier film 3 less susceptible to damage, and the vacuum insulated pipe has good thermal insulation performance.

[0023] Optionally, the first barrier ring 4 is a PE ring, and the second barrier ring 5 is a PE ring. PE rings have a good barrier effect, facilitating the formation of a vacuum cavity between the tube body 1, the first barrier ring 4, the second barrier ring 5, and the barrier film 3. This makes it difficult for external gas to enter the sealed cavity after the vacuum insulation pipe is formed. An adhesive is provided on the surfaces of the first barrier ring 4 and the second barrier ring 5 to achieve a sealed connection between the first barrier ring 4 and the second barrier ring 5. The tube body 1 can be made of PE material, and the first barrier ring 4 and the second barrier ring 5 can be integrally formed on the tube body 1. Of course, as another embodiment, the tube body 1 can also be made of metal.

[0024] Furthermore, the core material 2 is made of centrifugal wool, ultrafine rock wool, ultrafine glass wool, or aerogel, and is preferably in sheet form, so that the core material 2 can be easily wound around the outer wall of the pipe body 1. In order to reduce residual water vapor in the core material 2, a getter 6 and a desiccant 7 are provided on the core material 2, thereby promptly absorbing the residual water vapor in the core material 2 of the vacuum insulated pipe and improving the insulation effect.

[0025] In this embodiment, Figure 2As shown, the barrier film 3 is provided with an air extraction port 31 for extracting air, and a sealing barrier sheet 32 for sealing the air extraction port 31. After the barrier film 3 is sealed to the first and second barrier rings 4 and 5, a vacuum is drawn from the core material 2 through the air extraction port 31 using an air extraction device. After the vacuum is extracted, the air extraction port 31 is sealed with the sealing barrier sheet 32, thereby completing the vacuum insulation pipe. The air extraction device can be provided with a pressing mechanism, and the sealing barrier sheet 32 is provided with an adhesive, which is used to seal the air extraction port 31 with the sealing barrier sheet 32.

[0026] Of course, during production, the barrier film 3 can also be made into a cylindrical shape, with the length of the barrier film 3 being greater than the length of the tube body 1. After one end of the barrier film 3 is sealed and connected to the first barrier ring 4, an opening is formed at the other end of the barrier film 3, and the whole is placed in a vacuum chamber for vacuuming, so that the gas in the core material 2 is extracted from the opening. After the extraction, the opening is heat-sealed, and after breaking the vacuum, the middle part of the barrier film 3 is sealed with the second barrier ring 5, and the excess part of the barrier film is cut off to finally form a finished product.

[0027] In some examples, such as Figure 3 As shown, the first barrier ring 4 is provided with an annular groove 41, and the second barrier ring 5 is provided with an annular protrusion 51. During use, the annular protrusion 51 of the preceding vacuum insulated pipe can be connected to the annular groove 41 of the following vacuum insulated pipe, thereby splicing two adjacent vacuum insulated pipes together, thereby connecting multiple vacuum insulated pipes together. A first thread can be provided in the annular groove 41, and a second thread can be provided on the annular protrusion 51 to cooperate with the first thread. This ensures that the two adjacent vacuum insulated pipes are connected together with a relatively strong connection.

[0028] Furthermore, a protective cover is provided outside the barrier film 3. By providing the protective cover, the surface of the barrier film 3 is not easily scratched and damaged, thereby effectively improving the service life of the vacuum insulation pipe.

[0029] In this embodiment, the tube body 1 is in the shape of a round tube or a square tube, so that it can be easily sleeved on tubes of different shapes to achieve heat insulation for square tubes or round tubes.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A vacuum insulated pipeline, characterized by: Including tube body, core material and barrier film; A first barrier ring is provided at one end of the tube body, and a second barrier ring is provided at the other end of the tube body. The core material is provided on the outside of the tube body, one end of the core material is in contact with the inner side of the first barrier ring, and the other end of the core material is in contact with the inner side of the second barrier ring. The barrier film is provided on and covers the core material, one end of the barrier film is sealed with the first barrier ring, and the other end of the barrier film is sealed with the second barrier ring.

2. The vacuum insulated pipe according to claim 1, wherein: The first barrier ring is a PE ring, and the second barrier ring is a PE ring.

3. The vacuum insulated pipe according to claim 1, wherein: The core material is made of centrifugal wool, ultrafine rock wool, ultrafine glass wool or aerogel.

4. The vacuum insulated pipe according to claim 1, wherein: A getter and a desiccant are arranged on the core material.

5. The vacuum insulated pipe according to claim 1, wherein: The barrier film is provided with an air extraction port for extracting air, and the barrier film is provided with a sealing barrier sheet for sealing the air extraction port.

6. The vacuum insulated pipe according to claim 1, wherein: An annular groove is provided on the first barrier ring, and an annular protrusion is provided on the second barrier ring.

7. The vacuum insulated pipe according to claim 1, wherein: A protective cover is arranged outside the barrier film.

8. The vacuum insulated pipe according to claim 1, wherein: The tube body is in a circular tube shape or a square tube shape.

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