Prefabricated directly-buried thermal insulation pipe facilitating maintenance of thermal insulation inner container

Abstract

The utility model relates to a prefabricated directly-buried thermal insulation pipe facilitating maintenance of a thermal insulation inner container, and belongs to the technical field of directly-buried thermal insulation pipes, the prefabricated directly-buried thermal insulation pipe comprises a directly-buried pipe and a connecting structure located outside the directly-buried pipe, the directly-buried pipe comprises an inner container, polyester foam and an outer pipe, and the connecting structure comprises a connecting end cap and a flange plate fixedly connected to the connecting end cap; the connecting end cap is in threaded connection with the outer portion of the outer pipe, and a supporting rod used for connection is movably installed on the flange plate on one side. According to the prefabricated directly-buried thermal insulation pipe facilitating maintenance of the thermal insulation inner container, polyester foam between the inner container and the outer pipe is not fixed to each other, a connecting end cap is arranged to plug the directly-buried pipe, so that the inner container and the outer pipe are relatively stable, and a flange plate is arranged to be matched with a supporting rod to fixedly connect the connecting end cap; and the connecting end cap can be conveniently detached relative to the outer pipe, the inner container can be conveniently separated and maintained relative to the outer pipe, and the use convenience of the device is improved.

Description

Technical Field

[0001] The present application relates to the technical field of prefabricated direct-buried thermal insulation pipes, and specifically to a prefabricated direct-buried thermal insulation pipe that is convenient for maintenance of a thermal insulation liner. Background Art

[0002] Direct buried prefabricated insulated pipe is a device used for underground pipe insulation, usually composed of inner pipe, insulation layer and outer pipe. The inner pipe is used to transport fluid, the insulation layer is used to reduce heat loss, and the outer pipe is used to protect and support the entire structure.

[0003] The currently commonly used prefabricated direct-buried insulated pipe has an inner liner and an outer insulation layer that are directly prefabricated in an integrated manner, which makes it inconvenient to separate the inner liner of the prefabricated direct-buried insulated pipe from the outer insulation layer, which causes certain difficulties in maintenance. In this regard, a prefabricated direct-buried insulated pipe that is easy to maintain the insulation liner is proposed to solve the above-mentioned problem. Utility Model Content

[0004] In view of the deficiencies in the prior art, the present application provides a prefabricated direct-buried insulation pipe that is easy to maintain the insulation liner, and has the advantages of convenient removal of the liner for separate maintenance.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a prefabricated direct-buried thermal insulation pipe that is convenient for maintaining a thermal insulation liner, comprising a direct-buried pipe and a connecting structure located outside the direct-buried pipe, wherein the direct-buried pipe comprises an inner liner, polyester foam and an outer pipe;

[0006] The connection structure includes a connecting end cap and a flange fixedly connected to the connecting end cap, the connecting end cap is threadedly connected to the outside of the outer tube, a support rod for connection is movably installed on one side of the flange, a through groove is penetrated on the flange, the support rod passes through the through groove, and a nut is pre-tightened on one end of the support rod.

[0007] Furthermore, the connecting end cap is penetrated by an opening, and a blocking tube extending into the inner cavity of the connecting end cap is fixedly mounted at the opening of the connecting end cap.

[0008] Furthermore, the outer diameter of the blocking tube corresponds to the inner diameter of the inner tank, and a joint pipe is fixedly mounted on the flange.

[0009] Furthermore, the through groove is arranged on the flange in an arc shape, and the through groove includes a plurality of grooves corresponding to the support rods.

[0010] Furthermore, a connecting tube is fixedly installed on one end of the flange, one end of the support rod extends to the interior of the connecting tube, and a slide is fixedly installed on one end of the support rod, the slide is slidably connected to the inner wall of the connecting tube, and the diameter of the slide is larger than the caliber of the connecting tube.

[0011] Furthermore, a spring is fixedly installed between the slide plate and the inner wall of the connecting tube, one end of the spring is fixedly connected to the slide plate, and the other end of the spring is fixedly connected to the inner wall of the connecting tube.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] The prefabricated direct-buried thermal insulation pipe, which is convenient for maintenance of the thermal insulation inner liner, makes the inner liner and the outer tube relatively stable by arranging the polyester foam between the inner liner and the outer tube so as not to fix each other and arranging the connecting end cap to seal the direct-buried tube. The connecting end cap is fixedly connected by arranging the flange plate in cooperation with the supporting rod, so that the connecting end cap can be easily disassembled relative to the outer tube, and the separation and maintenance of the inner liner relative to the outer tube is also convenient, thereby improving the convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the overall structure of this application;

[0015] Figure 2 This is a three-dimensional diagram of the structure of the flange of this application;

[0016] Figure 3 This is a schematic diagram of the structure of the connecting tube of this application.

[0017] In the figure: 1. Inner liner; 2. Polyester foam; 3. Outer tube; 4. Connecting end cap; 5. Flange; 6. Connecting tube; 7. Blocking tube; 8. Through slot; 9. Support rod; 10. Nut; 11. Connecting tube; 12. Slide plate; 13. Spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0019] See also Figure 1-3In this embodiment, a prefabricated direct-buried insulation pipe that is easy to maintain an insulation liner includes a direct-buried pipe and a connecting structure located outside the direct-buried pipe, wherein the direct-buried pipe includes an inner liner 1, polyester foam 2 and an outer tube 3, and the polyester foam 2 is attached to the inner liner 1 and filled between the inner liner 1 and the outer tube 3 to achieve a heat preservation effect.

[0020] In this embodiment, the connection structure includes a connection end cap 4 and a flange 5 fixedly connected to the connection end cap 4. The connection end cap 4 is threadedly connected to the outside of the outer pipe 3. The connection end cap 4 can be used to integrally seal and connect the outer end of the direct buried pipe.

[0021] At this time, the polyester foam 2 is bonded and fixed relative to the outer tube 3 , and the inner liner 1 is slidably arranged relative to the polyester foam 2 .

[0022] The two connecting end caps 4 at both ends are sealed so that the inner liner 1 can be relatively fixed relative to the polyester foam 2 and the outer tube 3, that is, it can maintain stability when directly buried.

[0023] It should be noted that the connecting end cap 4 has an opening extending therethrough, and a blocking tube 7 extending into the inner cavity of the connecting end cap 4 is fixedly mounted at the opening of the connecting end cap 4;

[0024] Preferably, the outer diameter of the blocking tube 7 corresponds to the inner diameter of the inner liner 1, and the blocking between the blocking tube 7 and the connecting end cap 4 prevents the inner liner 1 and the polyester foam 2, which are relatively movable, from loosening during normal use;

[0025] If the inner liner 1 needs to be maintained, it is only necessary to remove the connecting end cap 4. At this time, the inner liner 1 can slide out relative to the outer tube 3, which is convenient for subsequent maintenance work.

[0026] In addition, a joint pipe 6 is fixedly mounted on the flange 5 to facilitate the connection of the embedded pipe.

[0027] In order to connect the connecting end cap 4, a supporting rod 9 for connection is movably installed on the flange 5 on one side in this embodiment, a through groove 8 is opened through the flange 5, the supporting rod 9 passes through the through groove 8, and a nut 10 is pre-tightened on one end of the supporting rod 9 through a thread.

[0028] In a specific implementation, one end of the support rod 9 passes through the flange 5 through the through slot 8 and is connected by a nut 10, so that the flanges 5 at both ends of the embedded pipe can be pre-tightened, that is, the two connecting end caps 4 can be stabilized.

[0029] Preferably, the through groove 8 is arranged on the flange 5 in an arc shape, and the through groove 8 includes a plurality of corresponding support rods 9 .

[0030] Such a design enables the connecting end cap 4 to allow the supporting rod 9 to have a certain adjustment and adaptability space corresponding to the flange 5 after being rotated and threadedly connected, thereby improving the adaptability.

[0031] In this embodiment, a connecting tube 11 is fixedly installed on one end of the flange 5, one end of the support rod 9 extends to the interior of the connecting tube 11, and a slide plate 12 is fixedly installed on one end of the support rod 9, the slide plate 12 is slidably connected to the inner wall of the connecting tube 11, and the diameter of the slide plate 12 is larger than the caliber of the connecting tube 11.

[0032] By the slide plate 12 abutting against the inner wall of the connecting tube 11 , the sliding limit position of the support rod 9 relative to the connecting tube 11 can be limited.

[0033] It should be noted that a spring 13 is fixedly installed between the slide plate 12 and the inner wall of the connecting tube 11 , one end of the spring 13 is fixedly connected to the slide plate 12 , and the other end of the spring 13 is fixedly connected to the inner wall of the connecting tube 11 .

[0034] In a specific implementation, the spring 13 pushes the slide plate 12 to slide relative to the connecting tube 11, which can facilitate pushing the support rod 9 through the through slot 8, thereby improving the convenience of installation.

[0035] In the present application, the polyester foam 2 between the inner liner 1 and the outer tube 3 is not fixed to each other, and a connecting end cap 4 is provided to seal the direct buried pipe, so that the inner liner 1 and the outer tube 3 are relatively stable, and the connecting end cap 4 is fixedly connected by providing a flange 5 in cooperation with a support rod 9, so that the connecting end cap 4 can be easily disassembled relative to the outer tube 3, and it is also convenient to separate and maintain the inner liner 1 relative to the outer tube 3, thereby improving the convenience of use of the device.

[0036] The working principle of the above embodiment is:

[0037] When the inner liner 1 in the prefabricated direct buried pipe needs to be maintained, several nuts 10 on a section of flange 5 are loosened so that the support rod 9 is no longer restricted in the through groove 8, and the support rod 9 is pressed so that the support rod 9 is pushed out of the through groove 8. Then the joint pipe 6 can be rotated, and the joint pipe 6 drives the fixedly connected flange 5 and the connecting end cap 4 to rotate synchronously. The connecting end cap 4 is engaged with the rotating thread relative to the outer tube 3, so that it is disengaged from one end of the direct buried pipe. At this time, the inner liner 1 can be slid and pulled out relative to the polyester foam 2 for maintenance without taking out the outer tube 3 outside the inner liner 1 as a whole.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0039] Although the embodiments of the present application have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A prefabricated direct-buried thermal insulation pipe for easy maintenance of a thermal insulation liner, comprising a direct-buried pipe and a connecting structure located outside the direct-buried pipe, characterized in that: The direct buried pipe comprises an inner liner (1), polyester foam (2) and an outer pipe (3); The connection structure comprises a connection end cap (4) and a flange (5) fixedly connected to the connection end cap (4); the connection end cap (4) is threadedly connected to the outside of the outer tube (3); a support rod (9) for connection is movably mounted on one side of the flange (5); a through groove (8) is formed through the flange (5); the support rod (9) passes through the through groove (8); and a nut (10) is threadedly pre-tightened on one end of the support rod (9).

2. The prefabricated direct-buried thermal insulation pipe for easy maintenance of the thermal insulation liner according to claim 1, characterized in that: The connecting end cap (4) has an opening extending therethrough, and a blocking tube (7) extending into the inner cavity of the connecting end cap (4) is fixedly mounted at the opening of the connecting end cap (4).

3. The prefabricated direct-buried thermal insulation pipe for easy maintenance of the thermal insulation liner according to claim 2, characterized in that: The outer diameter of the blocking tube (7) corresponds to the inner diameter of the inner container (1), and a joint tube (6) is fixedly mounted on the flange (5).

4. The prefabricated direct-buried thermal insulation pipe for easy maintenance of the thermal insulation liner according to claim 1, characterized in that: The through groove (8) is arranged on the flange (5) in an arc shape, and the through groove (8) includes a plurality of grooves corresponding to the support rods (9).

5. The prefabricated direct-buried thermal insulation pipe for easy maintenance of the thermal insulation liner according to claim 1, characterized in that: A connecting tube (11) is fixedly mounted on one end of the flange (5), one end of the support rod (9) extends into the interior of the connecting tube (11), and a slide plate (12) is fixedly mounted on one end of the support rod (9), the slide plate (12) is slidably connected to the inner wall of the connecting tube (11), and the diameter of the slide plate (12) is larger than the caliber of the connecting tube (11).

6. The prefabricated direct-buried thermal insulation pipe for easy maintenance of the thermal insulation liner according to claim 5, characterized in that: A spring (13) is also fixedly installed between the slide plate (12) and the inner wall of the connecting tube (11), one end of the spring (13) is fixedly connected to the slide plate (12), and the other end is fixedly connected to the inner wall of the connecting tube (11).

Images