Prefabricated thermal insulation pipe with anti-fatigue function

Abstract

The utility model discloses a prefabricated heat preservation pipe with an anti-fatigue function, relates to the technical field of prefabricated heat preservation pipe structures, and aims to solve the problems that the heat preservation effect of an existing prefabricated heat preservation pipe is not ideal, and the installation effect of the prefabricated heat preservation pipe is affected due to the fact that an internal pipeline possibly rotates when the prefabricated heat preservation pipe is installed. Welding seats are installed on the peripheries of the two ends of the working pipeline, a polyurethane foaming layer is arranged on the periphery of the outer wall of the working pipeline, an outer protection steel pipe is arranged outside the polyurethane foaming layer, a heat preservation layer is arranged outside the outer protection steel pipe, and the heat preservation layer comprises an inner heat preservation sleeve, an outer protection sleeve and glass fibers. An outer protective sleeve is arranged outside the inner heat preservation sleeve, an outer protective sleeve is arranged outside the heat preservation layer, and a buffer groove is formed in the outer protective sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of prefabricated thermal insulation pipe structures, and particularly relates to a prefabricated thermal insulation pipe with an anti-fatigue function. Background Technique

[0002] The prefabricated thermal insulation pipe is a composite pipe system composed of an inner steel pipe, an outer steel pipe, a thermal insulation layer and an anti-corrosion layer. The inner steel pipe plays the role of conveying the medium, and the outer steel pipe plays the role of protecting the inner steel pipe. The prefabricated thermal insulation pipe can be used for the transportation of liquids, gases and other media, and is used for the thermal insulation of adiabatic projects of pipelines in petroleum, chemical industry, aerospace, hot spring, central heating, central air conditioning, municipal administration, etc.

[0003] After retrieval, the authorized announcement number is CN201306580Y, which discloses a steel outer casing polyurethane prefabricated thermal insulation pipe. The steel outer casing polyurethane prefabricated thermal insulation pipe includes a working steel pipe and a steel outer casing pipe. The working steel pipe is arranged inside the steel outer casing pipe. The length of the working steel pipe is greater than the length of the steel outer casing pipe, and both ends protrude out of the steel outer casing pipe respectively; a plurality of support blocks are arranged outside the working steel pipe, and the height of each support block protruding radially from the working steel pipe is the same. The support block radially supports the steel outer casing pipe; a thermal insulation layer filling space is formed between the working steel pipe and the steel outer casing pipe, and a polyurethane thermal insulation layer is injected into the thermal insulation layer filling space. The support frame is embedded in the polyurethane thermal insulation layer. The steel outer casing polyurethane prefabricated thermal insulation pipe is suitable for the central heating / cooling industry and has characteristics such as waterproof, fireproof and anti-ultraviolet.

[0004] However, the existing prefabricated thermal insulation pipes have unsatisfactory thermal insulation effects. At the same time, during installation, the internal pipes may rotate, which will affect the installation effect of the prefabricated thermal insulation pipes. Therefore, there is an urgent need for a prefabricated thermal insulation pipe with an anti-fatigue function in the market to solve these problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide a prefabricated thermal insulation pipe with an anti-fatigue function, so as to solve the problems that the existing prefabricated thermal insulation pipes have unsatisfactory thermal insulation effects, and at the same time, during installation, the internal pipes may rotate, which will affect the installation effect of the prefabricated thermal insulation pipes as mentioned in the above background technique.

[0006] To achieve the above object, the present utility model provides the following technical solution: a prefabricated insulating pipe with anti-fatigue function, including a working pipe, welding seats are installed around the two ends of the working pipe, a polyurethane foam layer is arranged around the outer wall of the working pipe, an outer protective steel pipe is arranged outside the polyurethane foam layer, a heat-insulating layer is arranged outside the outer protective steel pipe, the heat-insulating layer includes an inner heat-insulating sleeve, an outer protective sleeve and glass fiber, the outer protective sleeve is arranged outside the inner heat-insulating sleeve, an outer protective sleeve is arranged outside the heat-insulating layer, and a buffer groove is arranged inside the outer protective sleeve.

[0007] Preferably, a plurality of grooves are arranged around the outer wall of the working pipe, and the plurality of grooves are sequentially distributed inside the outer wall of the working pipe.

[0008] Preferably, there are four welding seats, and the four welding seats are symmetrical about the vertical center line of the working pipe. One end of the welding seat is welded to the working pipe, and the other end of the welding seat is welded to the outer protective steel pipe.

[0009] Preferably, a plurality of positioning anti-sliding blocks are arranged around the inner wall of the outer protective steel pipe, and the plurality of positioning anti-sliding blocks are evenly distributed around the inner wall of the outer protective steel pipe, and the positioning anti-sliding blocks are welded to the outer protective steel pipe.

[0010] Preferably, the gap between the inner heat-insulating sleeve and the outer protective sleeve is filled with glass fiber.

[0011] Preferably, the glass fiber is formed by cross-weaving a plurality of glass fiber filaments.

[0012] Preferably, a plurality of buffer grooves are arranged, and the plurality of buffer grooves are evenly distributed inside the outer protective sleeve.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. For this prefabricated insulating pipe with anti-fatigue function, the welding seat can be used to weld and connect the working pipe and the outer protective steel pipe, so that the working pipe and the outer protective steel pipe can be positioned and installed, avoiding relative rotation, which affects the use effect of the prefabricated insulating pipe. The outer wall of the working pipe is provided with grooves. The grooves can make the friction effect between the working pipe and the polyurethane foam layer better. At the same time, the grooves can effectively prevent stress deformation when the working pipe is overheated, which can improve the anti-fatigue function of the prefabricated insulating pipe. One end of the inner wall of the outer protective steel pipe is provided with positioning anti-sliding blocks. The positioning anti-sliding blocks can improve the fixing effect between the polyurethane foam layer and the outer protective steel pipe, which can further improve the fixing effect of the polyurethane foam layer.

[0015] 2. This prefabricated thermal insulation pipe with anti-fatigue function can achieve better thermal insulation effect through the polyurethane foam layer. The inner thermal insulation sleeve and the outer protective sleeve are provided to enable this prefabricated thermal insulation pipe to have better thermal insulation effect. Filling with glass fiber can further improve the thermal insulation effect of the thermal insulation layer, thereby making the use effect of this prefabricated thermal insulation pipe better. The buffer groove is provided to enable the outer protective sleeve to deform when being extruded, so that the impact force can be well buffered, making the outer protective sleeve not easily damaged and enabling the outer protective sleeve to well protect this prefabricated thermal insulation pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall front view of the present utility model;

[0017] Figure 2 is the overall cross-sectional view of the present utility model;

[0018] Figure 3 is the cross-sectional view of the thermal insulation layer of the present utility model;

[0019] Figure 4 is of the present utility model Figure 2 partial enlarged view of Area A.

[0020] In the figure: 1, working pipeline; 101, groove; 2, welding seat; 3, polyurethane foam layer; 4, outer protective steel pipe; 401, positioning anti-slip block; 5, thermal insulation layer; 501, inner thermal insulation sleeve; 502, outer protective sleeve; 503, glass fiber; 6, outer protective sleeve; 601, buffer groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0022] Please refer to Figures 1-4, an embodiment provided by the present utility model: a prefabricated thermal insulation pipe with anti-fatigue function, including a working pipe 1, welding seats 2 are installed around both ends of the working pipe 1, a polyurethane foam layer 3 is arranged around the outer wall of the working pipe 1, an outer protective steel pipe 4 is arranged outside the polyurethane foam layer 3, a thermal insulation layer 5 is arranged outside the outer protective steel pipe 4, the thermal insulation layer 5 includes an inner thermal insulation sleeve 501, an outer protective sleeve 502 and fiberglass 503, the outer protective sleeve 502 is arranged outside the inner thermal insulation sleeve 501, an outer protective sleeve 6 is arranged outside the thermal insulation layer 5, and a buffer groove 601 is arranged inside the outer protective sleeve 6. It should be noted that, in order to save space and highlight the innovative elements of this patent, such as the specific process of how the prefabricated thermal insulation pipe is used and its working principle, they are not elaborated in this patent.

[0023] During use, the working pipe 1 and the outer protective steel pipe 4 can be welded and connected through the welding seats 2, so that the working pipe 1 and the outer protective steel pipe 4 can be positioned and installed. A groove 101 is arranged on the outer wall of the working pipe 1. Through the arranged groove 101, the friction effect between the working pipe 1 and the polyurethane foam layer 3 can be better, and at the same time, the groove 101 can effectively prevent the working pipe 1 from having stress deformation when overheated. A positioning anti-slip block 401 is arranged at one end of the inner wall of the outer protective steel pipe 4. Through the arranged positioning anti-slip block 401, the fixing effect between the polyurethane foam layer 3 and the outer protective steel pipe 4 can be improved. Through the polyurethane foam layer 3, the prefabricated thermal insulation pipe can have a better thermal insulation effect. Through the arranged inner thermal insulation sleeve 501 and outer protective sleeve 502, the prefabricated thermal insulation pipe can have a better thermal insulation effect. By filling with fiberglass 503, the thermal insulation effect of the thermal insulation layer 5 can be further improved, so that the use effect of the prefabricated thermal insulation pipe is better. Through the arranged buffer groove 601, the outer protective sleeve 6 can deform when being squeezed, so that the impact force can be buffered well.

[0024] Please refer to Figure 1 , a groove 101 is arranged around the outer wall of the working pipe 1. There are several grooves 101, and several grooves 101 are distributed in sequence inside the outer wall of the working pipe 1. Through the arranged groove 101, the friction effect between the working pipe 1 and the polyurethane foam layer 3 can be better, so that the polyurethane foam layer 3 can be prevented from rotating on the outer wall of the working pipe 1, thereby affecting the working effect of the prefabricated thermal insulation pipe.

[0025] Please refer to Figure 1 and Figure 2, there are four welding seats 2, and the four welding seats 2 are symmetric with respect to the vertical center line of the working pipe 1. One end of the welding seat 2 is welded to the working pipe 1, and the other end of the welding seat 2 is welded to the outer protective steel pipe 4, which can make the structure between the welding seat 2, the working pipe 1 and the outer protective steel pipe 4 more firm. Through this setting, the relative rotation between the working pipe 1 and the outer protective steel pipe 4 can be avoided, thus affecting the use effect of the prefabricated insulating pipe.

[0026] Please refer to Figure 2 , positioning anti-sliding blocks 401 are arranged around the inner wall of the outer protective steel pipe 4. There are several positioning anti-sliding blocks 401, and several positioning anti-sliding blocks 401 are evenly distributed around the inner wall of the outer protective steel pipe 4. The positioning anti-sliding blocks 401 are welded to the outer protective steel pipe 4, which can make the structure between the positioning anti-sliding blocks 401 and the outer protective steel pipe 4 more firm. By setting the positioning anti-sliding blocks, the fixing effect between the outer protective steel pipe 4 and the polyurethane foam layer 3 can be improved, so that the relative rotation between the outer protective steel pipe 4 and the polyurethane foam layer 3 can be avoided, thus affecting the use effect of the prefabricated insulating pipe.

[0027] Please refer to Figure 1 and Figure 3 , glass fiber 503 is filled in the gap between the inner insulating sleeve 501 and the outer protective sleeve 502. By setting the inner insulating sleeve 501 and the outer protective sleeve 502, this kind of prefabricated insulating pipe can have better heat preservation effect. By filling with glass fiber 503, the heat preservation effect of the heat preservation layer 5 can be further improved, so that the use effect of this kind of prefabricated insulating pipe is better.

[0028] Please refer to Figure 3 , the glass fiber 503 is formed by cross-weaving a number of glass fiber filaments. Through this setting, the sealing performance of the glass fiber 503 can be better, so that the glass fiber 503 has better heat preservation effect.

[0029] Please refer to Figure 1 and Figure 2 , there are several buffer grooves 601, and several buffer grooves 601 are evenly distributed inside the outer protective sleeve 6. By setting the buffer grooves 601, the outer protective sleeve 6 can deform when being squeezed, so that the impact force can be buffered well, making the outer protective sleeve 6 not easily damaged, and enabling the outer protective sleeve 6 to protect this kind of prefabricated insulating pipe well.

[0030] Working principle: During use, the working pipe 1 and the outer protective steel pipe 4 can be welded and connected through the welding seat 2, which can position and install the working pipe 1 and the outer protective steel pipe 4, avoiding relative rotation and thus affecting the use effect of the prefabricated insulating pipe. A groove 101 is provided on the outer wall of the working pipe 1. The groove 101 can improve the friction effect between the working pipe 1 and the polyurethane foam layer 3. At the same time, the groove 101 can effectively prevent stress deformation of the working pipe 1 when it overheats, which can improve the anti-fatigue function of the prefabricated insulating pipe. A positioning anti-slip block 401 is provided at one end of the inner wall of the outer protective steel pipe 4. The positioning anti-slip block 401 can improve the fixing effect between the polyurethane foam layer 3 and the outer protective steel pipe 4, further improving the fixing effect of the polyurethane foam layer 3. The prefabricated insulating pipe can have a better heat insulation effect through the polyurethane foam layer 3. The prefabricated insulating pipe can have a better heat insulation effect through the provided inner heat insulation sleeve 501 and outer protective sleeve 502. The heat insulation effect of the heat insulation layer 5 can be further improved by filling with glass fiber 503, so that the use effect of the prefabricated insulating pipe is better. The buffer groove 601 can cause the outer protective sleeve 6 to deform when it is squeezed, which can well buffer the impact force, making the outer protective sleeve 6 not easily damaged and enabling the outer protective sleeve 6 to well protect the prefabricated insulating pipe.

[0031] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A prefabricated insulating pipe with anti-fatigue function, comprising a working pipe (1), characterized in that: Welding seats (2) are installed around the two ends of the working pipeline (1). A polyurethane foam layer (3) is arranged around the outer wall of the working pipeline (1). An outer protective steel pipe (4) is arranged outside the polyurethane foam layer (3). A heat insulation layer (5) is arranged outside the outer protective steel pipe (4). The heat insulation layer (5) comprises an inner heat insulation sleeve (501), an outer protective sleeve (502) and glass fiber (503). The outer protective sleeve (502) is arranged outside the inner heat insulation sleeve (501). An outer protective sleeve (6) is arranged outside the heat insulation layer (5). A buffer groove (601) is arranged inside the outer protective sleeve (6).

2. The prefabricated insulating pipe with anti-fatigue function according to claim 1, wherein: A groove (101) is arranged around the outer wall of the working pipeline (1). A plurality of the grooves (101) are provided, and the plurality of grooves (101) are sequentially distributed inside the outer wall of the working pipeline (1).

3. The prefabricated insulating pipe with anti-fatigue function according to claim 2, wherein: Four welding seats (2) are provided. The four welding seats (2) are symmetrical about the vertical center line of the working pipeline (1). One end of the welding seat (2) is welded to the working pipeline (1), and the other end of the welding seat (2) is welded to the outer protective steel pipe (4).

4. A prefabricated insulating pipe with an anti-fatigue function according to claim 3, characterized in that: Positioning anti-slip blocks (401) are arranged around the inner wall of the outer protective steel pipe (4). A plurality of the positioning anti-slip blocks (401) are provided, and the plurality of positioning anti-slip blocks (401) are evenly distributed around the inner wall of the outer protective steel pipe (4). The positioning anti-slip blocks (401) are welded to the outer protective steel pipe (4).

5. The prefabricated thermal insulation pipe with anti-fatigue function according to claim 4, characterized in that: The gap between the inner heat insulation sleeve (501) and the outer protective sleeve (502) is filled with glass fiber (503).

6. The prefabricated insulating pipe with anti-fatigue function according to claim 5, characterized in that: The glass fiber (503) is formed by cross-weaving a plurality of glass fiber filaments.

7. A prefabricated insulating pipe with anti-fatigue function according to claim 6, characterized in that: A plurality of the buffer grooves (601) are provided, and the plurality of buffer grooves (601) are evenly distributed inside the outer protective sleeve (6).

Images