Directly-buried thermal insulation pipe with protection mechanism

Abstract

The utility model provides a direct-buried thermal insulation pipe with a protection mechanism. The direct-buried thermal insulation pipe comprises an outer cylinder; two sets of grooves are formed in the circumferential side face of the outer barrel, the two sets of grooves are located in the two ends of the outer barrel correspondingly, the circumferential side face of the outer barrel is sleeved with a rubber ring, the circumferential side face of the rubber ring is sleeved with a steel wire, a tightening block is arranged on the circumferential side face of the rubber ring, and a sliding groove is formed in the tightening block. According to the directly-buried type heat preservation pipe with the protection mechanism, after pipes are aligned, a rubber ring is arranged at the butt joint position of two sets of outer barrels in a sleeving mode, then a steel wire is wound around the circumferential side face of the rubber ring and is aligned with a groove, a hexagonal block is rotated to enable a lead screw to move leftwards along a threaded groove, and the protection mechanism is arranged. After the connecting blocks come out, the two ends of the steel wire penetrate into the two sets of connecting blocks through the through holes correspondingly, then the hexagonal blocks are rotated reversely, the connecting blocks pull the steel wire to slide towards the interior of the sliding groove at the moment, the steel wire can be tightened at the moment, and the rubber ring can be tightened and fixed after the steel wire is tightened.

Description

Technical Field

[0001] The utility model relates to the technical field of directly buried thermal insulation pipes, in particular to a directly buried thermal insulation pipe with a protection mechanism. Background Art

[0002] Direct buried insulated pipes are also called prefabricated insulated pipes. There are three types: plastic-coated steel insulated pipes, steel outer protective pipe vacuum composite insulation prefabricated direct buried pipes and steel-coated steel insulated pipes. Plastic-coated steel insulated pipes are made of a high-density polyethylene outer casing, a polyurethane foam insulation layer and an inner working steel pipe, or the insulation layer is changed to an aerogel insulation felt plus a polyurethane high-pressure foaming composite solution. Steel outer protective pipe vacuum composite insulation prefabricated direct buried pipes are composed of an anti-corrosion layer, a steel outer protective pipe, a vacuum layer, an insulation layer and a modified steel pipe. Steel-coated steel insulated pipes are composed of an outer protective steel pipe plus a steel pipe anti-corrosion, a polyurethane foam insulation layer and an inner working steel pipe, or an aerogel insulation felt plus a polyurethane high-pressure foaming composite solution.

[0003] In the technical field of direct-buried insulated pipes, when using longer pipes, multiple sets of insulated pipes are often required to be spliced. The existing direct-buried insulated pipe joints are often not tight enough, and the interior is easily affected by moisture or a humid environment over time, which makes it easy for water to seep in, affecting the insulation effect.

[0004] Therefore, it is necessary to provide a direct buried thermal insulation pipe with a protective mechanism to solve the above technical problems. Utility Model Content

[0005] The utility model provides a direct-buried thermal insulation pipe with a protective mechanism, which solves the problem that the existing direct-buried thermal insulation pipes are often not tightly spliced, and the interior is easily damp or a humid environment easily seeps water over time, affecting the thermal insulation effect.

[0006] In order to solve the above technical problems, the utility model provides a direct buried thermal insulation pipe with a protection mechanism, comprising: an outer tube;

[0007] The outer cylinder is provided with grooves on the circumferential side surface, and there are two groups of grooves, which are respectively located at the two ends of the outer cylinder, a rubber ring is sleeved on the circumferential side surface of the outer cylinder, a steel wire is sleeved on the circumferential side surface of the rubber ring, a tightening block is provided on the circumferential side surface of the rubber ring, a slide groove is provided inside the tightening block, a threaded groove is provided on the right side of the slide groove, a screw rod is threadedly connected inside the threaded groove, a connecting block is fixedly connected to the left end of the screw rod, a through hole is penetrated through the circumferential side surface of the connecting block, the through hole matches the steel wire, and a hexagonal block is fixedly connected to the right end of the screw rod.

[0008] Preferably, an inner cylinder is arranged inside the outer cylinder, and a widening cylinder is fixedly connected to the right end of the inner cylinder, and the inner wall of the widening cylinder matches the outer ring of the inner cylinder.

[0009] Preferably, support rods are fixedly connected to the peripheral side surface of the inner cylinder, and multiple groups of support rods are provided, and the support rods are evenly distributed at both ends of the inner cylinder.

[0010] Preferably, a support sheet is fixedly connected to the upper end of the support rod, and the support sheet is in contact with the inner wall of the outer cylinder and is fixedly connected to the inner wall of the outer cylinder.

[0011] Preferably, a limiting ring is fixedly connected to the peripheral side surface of the inner cylinder, and the limiting ring has the same outer diameter as the expansion cylinder.

[0012] Preferably, a filler is fixedly connected between the inner cylinder and the outer cylinder, and the filler can be made of sponge, polyurethane foaming agent or the like.

[0013] Compared with the related art, the direct buried thermal insulation pipe with a protective mechanism provided by the utility model has the following beneficial effects:

[0014] The utility model provides a direct-buried thermal insulation pipe with a protective mechanism. The front end of the inner tube of one group of pipes is aligned with the expansion tube of the other group of pipes, and then the front end of the inner tube is inserted into the expansion tube until the expansion tube is tightly attached to the limit ring. At this time, the outer tubes of the two groups of pipes are aligned and fitted with each other. The two groups of pipes are very convenient to connect through the mechanism. After the pipes are aligned, a rubber ring is put on the place where the two groups of outer tubes are connected, and then a steel wire is wound around the side surface of the rubber ring, and the steel wire is aligned with the groove. The hexagonal block is rotated to make the screw rod move leftward along the thread groove. When the connecting block comes out, the two ends of the steel wire are respectively inserted into the inside of the two groups of connecting blocks through the through holes, and then the hexagonal block is rotated in the opposite direction. At this time, the connecting block pulls the steel wire to slide into the inside of the slide groove. At this time, the steel wire can be tightened. After the steel wire is tightened, the rubber ring can be tightened and fixed. The joint of the thermal insulation pipe can be prevented from easily leaking water due to insufficient tightness, and it is very convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A structural schematic diagram of a preferred embodiment of a direct-buried thermal insulation pipe with a protective mechanism provided by the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the tightening block shown in the front view;

[0017] Figure 3 for Figure 1 Schematic diagram of the structure of the inner cylinder shown.

[0018] Numbers in the figure: 1. Outer cylinder; 2. Groove; 3. Rubber ring; 4. Steel wire; 5. Tightening block; 6. Slide groove; 7. Threaded groove; 8. Screw rod; 9. Connecting block; 10. Through hole; 11. Hexagonal block; 12. Inner cylinder; 13. Expanding cylinder; 14. Support rod; 15. Support sheet; 16. Limiting ring; 17. Filler. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0020] Please refer to Figure 1 , Figure 2 and Figure 3 ,in Figure 1 A structural schematic diagram of a preferred embodiment of a direct-buried thermal insulation pipe with a protective mechanism provided by the utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the tightening block shown in the front view; Figure 3 for Figure 1 The structural schematic diagram of the inner tube shown is a direct buried thermal insulation pipe with a protective mechanism, comprising: an outer tube 1;

[0021] A groove 2 is provided on the side surface of the outer cylinder 1, and two groups of grooves 2 are provided. The two groups of grooves 2 are respectively located at the two ends of the outer cylinder 1. A rubber ring 3 is sleeved on the side surface of the outer cylinder 1, and a steel wire 4 is sleeved on the side surface of the rubber ring 3. A tightening block 5 is provided on the side surface of the rubber ring 3. A slide groove 6 is provided inside the tightening block 5, and two groups of slide grooves 6 are provided. A threaded groove 7 is provided on the right side of the slide groove 6. A screw rod 8 is threadedly connected to the inside of the threaded groove 7. A connecting block 9 is fixedly connected to the left end of the screw rod 8. A through hole 10 is provided on the side surface of the connecting block 9, and the through hole 10 matches the steel wire 4. A hexagonal block 11 is fixedly connected to the right end of the screw rod 8. The setting of the groove 2 can prevent the steel wire 4 from deflecting after tightening, and the setting of the hexagonal block 11 can facilitate the rotation of the screw rod 8.

[0022] An inner tube 12 is arranged inside the outer tube 1, and an expansion tube 13 is fixedly connected to the right end of the inner tube 12. The inner wall of the expansion tube 13 matches the outer circle of the inner tube 12. The arrangement of the expansion tube 13 can facilitate the docking of two groups of the same pipes.

[0023] Support rods 14 are fixedly connected to the side surfaces of the inner cylinder 12 , and multiple groups of support rods 14 are provided, and the support rods 14 are evenly distributed at both ends of the inner cylinder 12 .

[0024] A support sheet 15 is fixedly connected to the upper end of the support rod 14. The support sheet 15 is in contact with the inner wall of the outer tube 1 and is fixedly connected to the inner wall of the outer tube 1. The arrangement of the support rod 14 and the support sheet 15 can prevent deformation of the two ends of the outer tube 1, and can also keep the inner tube 12 in the center position of the outer tube 1.

[0025] A limiting ring 16 is fixedly connected to the side surface of the inner tube 12. The limiting ring 16 has the same outer diameter as the expansion tube 13. The limiting ring 16 cooperates with the expansion tube 13 to limit the connection of two groups of pipes.

[0026] A filler 17 is fixedly connected between the inner tube 12 and the outer tube 1 , and the filler 17 can be made of a material such as sponge or polyurethane foam.

[0027] The working principle of the direct buried thermal insulation pipe with a protective mechanism provided by the utility model is as follows:

[0028] Step 1: When in use, align the front end of the inner tube 12 of one group of tubes with the expansion tube 13 of another group of tubes, and then insert the front end of the inner tube 12 into the expansion tube 13 until the expansion tube 13 is tightly attached to the limiting ring 16. At this time, the outer tubes 1 of the two groups of tubes are aligned and fitted with each other.

[0029] Step 2: After the tubes are aligned, put the rubber ring 3 on the joint of the two sets of outer tubes 1, then wrap the steel wire 4 around the side of the rubber ring 3, and align the steel wire 4 with the groove 2, rotate the hexagonal block 11 to move the screw rod 8 to the left along the threaded groove 7, and when the connecting block 9 comes out, pass the two ends of the steel wire 4 through the through holes 10 into the two sets of connecting blocks 9, and then rotate the hexagonal block 11 in the opposite direction. At this time, the connecting block 9 pulls the steel wire 4 to slide into the slide groove 6. At this time, the steel wire 4 can be tightened, and the rubber ring 3 can be tightened and fixed after the steel wire 4 is tightened.

[0030] Compared with the related art, the direct buried thermal insulation pipe with a protective mechanism provided by the utility model has the following beneficial effects:

[0031] The front end of the inner tube 12 of one group of pipes is aligned with the expansion tube 13 of the other group of pipes, and then the front end of the inner tube 12 is inserted into the expansion tube 13 until the expansion tube 13 is tightly attached to the limit ring 16. At this time, the outer tubes 1 of the two groups of pipes are aligned and fitted with each other. This mechanism is very convenient for docking the two groups of pipes. After the pipes are aligned, the rubber ring 3 is put on the docking place of the two groups of outer tubes 1, and then the steel wire 4 is wrapped around the side of the rubber ring 3, and the steel wire 4 is aligned with the groove 2. The hexagonal block 11 is rotated to make the screw rod 8 move to the left along the thread groove 7. When the connecting block 9 comes out, the two ends of the steel wire 4 are respectively inserted into the inside of the two groups of connecting blocks 9 through the through hole 10, and then the hexagonal block 11 is rotated in the opposite direction. At this time, the connecting block 9 pulls the steel wire 4 to slide inside the slide groove 6. At this time, the steel wire 4 can be tightened. After the steel wire 4 is tightened, the rubber ring 3 can be tightened and fixed. This mechanism can prevent the splicing of the insulation pipe from being easily leaking due to insufficient tightness, which is very convenient to use.

[0032] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A direct buried thermal insulation pipe with a protective mechanism, characterized in that: include: outer cylinder(1); The outer tube (1) is provided with a groove (2) on the circumferential side surface, and the groove (2) is provided with two groups. The two groups of grooves (2) are respectively located at the two ends of the outer tube (1). The outer tube (1) is sleeved with a rubber ring (3). The rubber ring (3) is sleeved with a steel wire (4). The rubber ring (3) is provided with a tightening block (5) on the circumferential side surface. A slide groove (6) is provided inside the tightening block (5). A threaded groove (7) is provided on the right side of the slide groove (6). A screw rod (8) is threadedly connected inside the threaded groove (7). The left end of the screw rod (8) is fixedly connected with a connecting block (9). A through hole (10) is provided through the circumferential side surface of the connecting block (9). The right end of the screw rod (8) is fixedly connected with a hexagonal block (11).

2. The direct buried thermal insulation pipe with a protective mechanism according to claim 1, characterized in that: An inner cylinder (12) is arranged inside the outer cylinder (1), and a widening cylinder (13) is fixedly connected to the right end of the inner cylinder (12).

3. The direct buried thermal insulation pipe with a protective mechanism according to claim 2, characterized in that: The inner cylinder (12) is fixedly connected to a peripheral side surface with support rods (14), and a plurality of groups of support rods (14) are provided. The support rods (14) are evenly distributed at both ends of the inner cylinder (12).

4. The direct buried thermal insulation pipe with a protective mechanism according to claim 3, characterized in that: A support sheet (15) is fixedly connected to the upper end of the support rod (14); the support sheet (15) is in close contact with the inner wall of the outer cylinder (1) and is fixedly connected to the inner wall of the outer cylinder (1).

5. The direct buried thermal insulation pipe with a protective mechanism according to claim 4, characterized in that: A limiting ring (16) is fixedly connected to the circumferential side surface of the inner cylinder (12), and the limiting ring (16) has the same outer diameter as the expansion cylinder (13).

6. The direct buried thermal insulation pipe with a protective mechanism according to claim 5, characterized in that: A filler (17) is fixedly connected between the inner cylinder (12) and the outer cylinder (1).

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