Directly-buried prefabricated directly-buried thermal insulation pipe

Abstract

The utility model discloses a direct burial type prefabricated direct burial thermal insulation pipe which is composed of a multi-layer structure such as an inner pipe, a first reflecting layer, a thermal insulation tile, a foam filling layer, a second reflecting layer, a buffer ball and a steel pipe sleeve, the first reflecting layer and the thermal insulation tile are arranged on the outer side of the inner pipe to enhance thermal insulation performance, and the foam filling layer and the second reflecting layer further insulate heat. Buffer balls made of polyethylene materials are arranged on the outer side of the second reflecting layer in an annular array mode, impact of external force can be effectively absorbed, the top of the directly-buried heat preservation pipe body is provided with a connector which is connected and fixed through a connecting sleeve, the connector is connected with the connecting sleeve in an inserted mode, and a clamping block on the outer side of the connector is correspondingly clamped with a positioning groove on the outer side of an inserting opening of the connecting sleeve. The inner pipe and the steel pipe sleeve are made of steel materials and are high in strength and resistant to corrosion, the protection sleeve is made of polyethylene materials and is high in corrosion resistance and good in insulation performance, the inner cavity corresponds to the protection sleeve and plays a role in sealing protection and buffering, and the directly-buried heat preservation pipe has the advantages of being excellent in heat preservation performance, stable in connection, convenient and fast to install, high in adaptability and the like.

Description

Technical Field

[0001] The utility model belongs to the technical field related to thermal insulation pipes, and particularly relates to a direct-buried prefabricated direct-buried thermal insulation pipe. Background Art

[0002] In urban centralized heating systems, direct-buried prefabricated direct-buried insulated pipes can efficiently transport hot water or steam, reduce heat loss, and improve energy utilization efficiency. Their good thermal insulation performance can reduce energy consumption during the transportation process and save energy costs.

[0003] However, during the use of existing prefabricated direct-buried insulated pipes, in the field of pipeline transportation, especially when it comes to the transportation of fluids that require insulation, traditional insulated pipes often have poor insulation effects and are easily damaged when subjected to external collisions. Utility Model Content

[0004] The purpose of the present utility model is to provide a direct-buried prefabricated direct-buried insulated pipe to solve the problem that during the use of the existing prefabricated direct-buried insulated pipe proposed in the above background technology, in the field of pipeline transportation, especially when it involves the transportation of fluids that need to be insulated, traditional insulated pipes often have poor insulation effect and are easily damaged when subjected to external collisions.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a direct-buried prefabricated direct-buried thermal insulation pipe, comprising a direct-buried thermal insulation pipe body;

[0006] An inner tube is provided at the middle position inside the main body of the direct-buried thermal insulation pipe, a protective sleeve is provided at the outer position of the main body of the direct-buried thermal insulation pipe, and an insulation layer is provided at the middle position between the inner tube and the protective sleeve;

[0007] A first reflecting layer is provided at the outer side of the inner tube, an insulation tile is provided at the outer side of the first reflecting layer, a foam filling layer is provided at the outer side of the insulation tile, a second reflecting layer is provided at the outer side of the foam filling layer, a buffer ball is provided at the outer side of the second reflecting layer, and a steel pipe sleeve is provided at the outer side of the buffer ball.

[0008] Preferably, the annular array of buffer balls is arranged outside the second reflective layer, the top of the buffer balls corresponds to the curvature of the second reflective layer, and the buffer balls are made of polyethylene material.

[0009] Preferably, the first reflective layer and the second reflective layer are made of aluminum foil, and the thermal insulation tile is made of glass fiber.

[0010] Preferably, an interface is provided at the top of the direct-buried thermal insulation pipe body, the direct-buried thermal insulation pipe body is connected and fixed by a connecting sleeve, and the interface is plug-connected to the connecting sleeve.

[0011] Preferably, a snap-in block is provided in a circular array on the outer side of the interface, plug-in sleeves are provided on the left and right sides of the connecting sleeve respectively, an inner cavity is provided at the inner position of the plug-in sleeve, a plug-in interface is provided at the inner position of the inner cavity, and a positioning groove is provided in a ring shape on the outer side of the plug-in interface, and the positioning groove corresponds to the snap-in block.

[0012] Preferably, the inner tube and the steel tube sleeve are made of steel material, the protective sleeve is made of polyethylene material, and the inner cavity corresponds to the protective sleeve.

[0013] Compared with the prior art, the present invention provides a direct-buried prefabricated direct-buried thermal insulation pipe with the following beneficial effects:

[0014] 1. Through the setting of the first reflective layer, insulation tile, foam filling layer, second reflective layer, buffer ball, and steel pipe sleeve, the first reflective layer and the second reflective layer are made of aluminum foil. The aluminum foil has good heat reflection performance and can reflect heat back to the inner pipe, reducing heat loss and greatly improving the insulation effect of the insulation pipe. The insulation tile made of glass fiber further enhances the insulation performance. Glass fiber has a low thermal conductivity coefficient and can effectively prevent the conduction of heat. It works together with the reflective layer to ensure that the medium in the pipeline maintains a stable temperature during transportation. The foam filling layer not only has a certain insulation effect, but also has a buffering and heat-insulating effect, further reducing heat transfer and improving insulation performance. The polyethylene buffer ball arranged in a ring array on the outside of the second reflective layer can effectively absorb external impact When the insulation pipe is subjected to external force such as extrusion, collision or soil pressure, the buffer ball can play a role of buffering protection to prevent damage to the internal structure, thereby extending the service life of the insulation pipe. The top of the buffer ball corresponds to the curvature of the second reflective layer, making the fit between the buffer ball and the reflective layer tighter, which can better play the buffering role and also ensure the stability of the overall structure of the insulation pipe. Polyethylene material has good elasticity, corrosion resistance and wear resistance. As a buffer ball material, it can maintain good performance in various harsh environments, ensuring long-term and effective buffering protection. The outer steel pipe sleeve provides a solid external protection for the insulation pipe and enhances the overall structural strength. It can withstand a certain amount of external pressure and tension to prevent the insulation pipe from deformation or damage during installation and use.

[0015] 2. Through the arrangement of the interface, connecting sleeve, clamping block, plug-in sleeve, inner cavity and plug-in interface, the interface and the connecting sleeve are connected by plug-in, which makes the connection tighter. During the installation process, you only need to insert the interface into the connecting sleeve. The operation is simple and convenient. At the same time, it can ensure the firmness of the connection and reduce the risk of loosening or falling off of the pipeline during use. The clamping blocks arranged in an annular array on the outside of the interface correspond to the positioning grooves arranged in an annular manner on the outside of the plug-in interface. When the interface is inserted into the connecting sleeve, the clamping blocks and the positioning grooves are engaged with each other, which further enhances the stability of the connection. This design can effectively prevent the pipeline from being displaced when subjected to external force or internal pressure changes, thereby ensuring the safe operation of the pipeline system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a structural schematic diagram of the main body of the directly buried thermal insulation pipe in the present utility model.

[0018] Figure 3 It is a structural schematic diagram of the connecting sleeve in the utility model.

[0019] Figure 4 This is a structural diagram of the installation of the directly buried thermal insulation pipe in the utility model.

[0020] In the figure: 1. Direct-buried insulation pipe body; 2. Inner pipe; 3. First reflective layer; 4. Insulation tile; 5. Foam filling layer; 6. Second reflective layer; 7. Buffer ball; 8. Steel pipe sleeve; 9. Protective sleeve; 10. Interface; 11. Clamping block; 12. Connecting sleeve; 13. Plug sleeve; 14. Inner cavity; 15. Plug interface; 16. Positioning groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] The utility model provides Figure 1-4 The direct-buried prefabricated direct-buried thermal insulation pipe shown includes a direct-buried thermal insulation pipe body 1;

[0023] An inner tube 2 is provided at the middle position inside the direct-buried thermal insulation pipe body 1, a protective sleeve 9 is provided at the outer position of the direct-buried thermal insulation pipe body 1, and an insulation layer is provided at the middle position between the inner tube 2 and the protective sleeve 9;

[0024] A first reflecting layer 3 is provided on the outer side of the inner tube 2, an insulating tile 4 is provided on the outer side of the first reflecting layer 3, a foam filling layer 5 is provided on the outer side of the insulating tile 4, a second reflecting layer 6 is provided on the outer side of the foam filling layer 5, a buffer ball 7 is provided on the outer side of the second reflecting layer 6, and a steel pipe sleeve 8 is provided on the outer side of the buffer ball 7.

[0025] The buffer balls 7 are arranged in an annular array outside the second reflective layer 6 , and the tops of the buffer balls 7 correspond to the curvature of the second reflective layer 6 . The buffer balls 7 are made of polyethylene material.

[0026] The first reflecting layer 3 and the second reflecting layer 6 are made of aluminum foil, and the thermal insulation tile 4 is made of glass fiber.

[0027] An interface 10 is provided at the top of the direct-buried thermal insulation pipe body 1 , and the direct-buried thermal insulation pipe body 1 is connected and fixed by a connecting sleeve 12 , and the interface 10 is plug-connected to the connecting sleeve 12 .

[0028] A snap-in block 11 is provided in a circular array on the outside of the interface 10, and plug-in sleeves 13 are provided on the left and right sides of the connecting sleeve 12 respectively. An inner cavity 14 is provided inside the plug-in sleeve 13, and an inserting port 15 is provided inside the inner cavity 14. A positioning groove 16 is provided in a circular shape on the outside of the inserting port 15, and the positioning groove 16 corresponds to the snap-in block 11.

[0029] The inner tube 2 and the steel tube sleeve 8 are made of steel material, the protective sleeve 9 is made of polyethylene material, and the inner cavity 14 corresponds to the protective sleeve 9.

[0030] In this embodiment, a direct-buried prefabricated direct-buried insulated pipe is provided with specific implementation steps. The main body of the direct-buried insulated pipe is composed of an inner pipe 2, a protective sleeve 9 and an intermediate insulation layer. The first reflective layer 2, the insulation tile 4, the foam filling layer 5, the second reflective layer 6, the buffer ball 7 and the steel pipe sleeve 8 are sequentially arranged on the outside of the inner pipe 2. The buffer ball 7 is arranged in a ring array on the outside of the second reflective layer 6, and the top corresponds to the curvature of the second reflective layer 6. It is made of polyethylene material. The first reflective layer 2 and the second reflective layer 6 are made of aluminum foil, the insulation tile 4 is made of glass fiber, the inner pipe 2 and the steel pipe sleeve 8 are made of steel material, and the protective sleeve 9 is made of polyethylene material. The interface 10 at the top of the direct-buried insulated pipe main body 1 is plugged into the connecting sleeve 12, and the clamping block 11 on the outside of the interface 10 corresponds to the positioning groove 16 of the plug interface 15 inside the plug sleeve 13 to achieve a stable connection.

[0031] like Figure 1 and Figure 4As shown, a first reflecting layer 3 is provided at the outer side of the inner tube 2, an insulating tile 4 is provided at the outer side of the first reflecting layer 3, a foam filling layer 5 is provided at the outer side of the insulating tile 4, a second reflecting layer 6 is provided at the outer side of the foam filling layer 5, a buffer ball 7 is provided at the outer side of the second reflecting layer 6, a steel pipe sleeve 8 is provided at the outer side of the buffer ball 7, the buffer ball 7 is provided in a ring array on the outer side of the second reflecting layer 6, the top of the buffer ball 7 corresponds to the curvature of the second reflecting layer 6, the buffer ball 7 is made of polyethylene material, the first reflecting layer 3 and the second reflecting layer 6 are made of aluminum foil, and the insulating tile 4 is made of glass fiber.

[0032] Preferably, a first reflective layer 2 and a second reflective layer 6 are provided, and both are made of aluminum foil. The aluminum foil has good heat reflection performance and can reflect heat back to the inner tube, reducing heat loss and greatly improving the thermal insulation effect of the thermal insulation pipe. The thermal insulation tile 4 made of glass fiber further enhances the thermal insulation performance. Glass fiber has a low thermal conductivity coefficient and can effectively prevent the conduction of heat. It cooperates with the reflective layer to ensure that the medium in the pipeline maintains a stable temperature during transportation. The foam filling layer 5 not only has a certain thermal insulation effect, but also has a buffering and heat-insulating effect, further reducing heat transfer and improving thermal insulation performance. The polyethylene buffer balls 7 arranged in an annular array on the outside of the second reflective layer 6 can effectively absorb external impact force. When the thermal insulation pipe is squeezed, collided or When soil pressure and other factors act, the buffer ball 7 can play a role of buffering protection to prevent damage to the internal structure, thereby extending the service life of the insulation pipe. The top of the buffer ball 7 corresponds to the curvature of the second reflective layer 6, so that the fit between the buffer ball 7 and the reflective layer is tighter, which can better play a buffering role and also ensure the stability of the overall structure of the insulation pipe. Polyethylene material has good elasticity, corrosion resistance and wear resistance. As a buffer ball material, it can maintain good performance in various harsh environments, ensuring long-term and effective buffering protection. The outer steel pipe sleeve 8 provides a solid external protection for the insulation pipe and enhances the overall structural strength. It can withstand a certain amount of external pressure and tension to prevent the insulation pipe from deformation or damage during installation and use.

[0033] like Figure 2-3 As shown, an interface 10 is provided at the top position of the direct-buried thermal insulation pipe body 1, and the direct-buried thermal insulation pipe body 1 is connected and fixed by a connecting sleeve 12. The interface 10 is plugged into the connecting sleeve 12, and a clamping block 11 is provided in a circular array on the outside of the interface 10. Plug-in sleeves 13 are provided on the left and right sides of the connecting sleeve 12 respectively. An inner cavity 14 is provided at the internal position of the plug-in sleeve 13, and an inserting interface 15 is provided at the internal position of the inner cavity 14. A positioning groove 16 is provided in a ring shape on the outside of the inserting interface 15, and the positioning groove 16 corresponds to the clamping block 11.

[0034] Preferably, the interface 10 and the connecting sleeve 9 are connected by plug-in connection, which makes the connection tighter. During the installation process, it is only necessary to insert the interface 10 into the connecting sleeve 12. The operation is simple and convenient. At the same time, it can ensure the firmness of the connection and reduce the risk of loosening or falling off of the pipeline during use. The clamping blocks 11 arranged in an annular array on the outside of the interface 10 correspond to the positioning grooves 16 arranged in an annular manner on the outside of the plug-in interface 15. When the interface 10 is inserted into the connecting sleeve 12, the clamping blocks 11 and the positioning grooves 16 are engaged with each other, further enhancing the stability of the connection. This design can effectively prevent the pipeline from being displaced when subjected to external force or internal pressure changes, thereby ensuring the safe operation of the pipeline system.

[0035] like Figure 1-4 As shown, the inner tube 2 and the steel tube sleeve 8 are made of steel material, the protective sleeve 9 is made of polyethylene material, and the inner cavity 14 corresponds to the protective sleeve 9.

[0036] Optionally, steel has higher strength and rigidity, can withstand greater internal pressure and external loads, and ensure that the pipeline is not easily deformed or damaged during use. Polyethylene has good corrosion resistance to a variety of chemicals and can effectively protect the pipeline from erosion by external chemicals.

[0037] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A direct-buried prefabricated direct-buried thermal insulation pipe, comprising a direct-buried thermal insulation pipe body (1); An inner tube (2) is provided at a middle position inside the direct-buried thermal insulation pipe body (1), a protective sleeve (9) is provided at an outer position of the direct-buried thermal insulation pipe body (1), and an insulation layer is provided at a middle position between the inner tube (2) and the protective sleeve (9); Its characteristics are: A first reflecting layer (3) is provided at an outer position of the inner tube (2), a thermal insulation tile (4) is provided at an outer position of the first reflecting layer (3), a foam filling layer (5) is provided at an outer position of the thermal insulation tile (4), a second reflecting layer (6) is provided at an outer position of the foam filling layer (5), a buffer ball (7) is provided at an outer position of the second reflecting layer (6), and a steel pipe sleeve (8) is provided at an outer position of the buffer ball (7).

2. The direct-buried prefabricated direct-buried thermal insulation pipe according to claim 1, characterized in that: The buffer balls (7) are arranged in an annular array outside the second reflective layer (6), the tops of the buffer balls (7) correspond to the curvature of the second reflective layer (6), and the buffer balls (7) are made of polyethylene material.

3. The direct-buried prefabricated direct-buried thermal insulation pipe according to claim 2, characterized in that: The first reflecting layer (3) and the second reflecting layer (6) are made of aluminum foil, and the thermal insulation tile (4) is made of glass fiber.

4. The direct-buried prefabricated direct-buried thermal insulation pipe according to claim 1, characterized in that: An interface (10) is provided at the top of the direct-buried thermal insulation pipe body (1); the direct-buried thermal insulation pipe body (1) is connected and fixed via a connecting sleeve (12); and the interface (10) and the connecting sleeve (12) are plug-connected.

5. The direct-buried prefabricated direct-buried thermal insulation pipe according to claim 4, characterized in that: A snap-fit block (11) is provided in an annular array on the outer side of the interface (10); plug-in sleeves (13) are provided on the left and right sides of the connecting sleeve (12); an inner cavity (14) is provided inside the plug-in sleeve (13); an inserting interface (15) is provided inside the inner cavity (14); a positioning groove (16) is provided in an annular shape on the outer side of the inserting interface (15); the positioning groove (16) corresponds to the snap-fit block (11).

6. The direct-buried prefabricated direct-buried thermal insulation pipe according to claim 5, characterized in that: The inner tube (2) and the steel tube sleeve (8) are made of steel material, the protective sleeve (9) is made of polyethylene material, and the inner cavity (14) corresponds to the protective sleeve (9).

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