Heat-resistant polyethylene polyurethane prefabricated directly-buried thermal insulation pipe

Abstract

The utility model discloses a heat-resistant polyethylene polyurethane prefabricated directly-buried thermal insulation pipe, which belongs to the technical field of thermal insulation pipes and comprises two semicircular sleeves, arc-shaped mounting plates are fixedly adhered to the inner walls of the two semicircular sleeves, and thermal insulation layers are fixedly adhered to the inner walls of the arc-shaped mounting plates. An arc-shaped partition plate is fixedly installed on the inner wall of the heat preservation layer, and the inner wall of the arc-shaped partition plate is attached to the outer wall of an inner pipe of the prefabricated directly-buried heat preservation pipe. A first mounting strip and a second mounting strip are fixedly mounted on the side walls of the two semicircular sleeves correspondingly, a plurality of circular grooves are formed in one side of the first mounting strip, threaded holes are formed in the bottoms of the circular grooves correspondingly, and threaded rods are mounted in the threaded holes in a threaded mode; threaded grooves corresponding to the threaded holes are formed in the side wall of the second mounting strip. Compared with the prior art, the device can improve the heat preservation layer wrapping efficiency after the prefabricated directly-buried heat preservation pipe is welded, and therefore the project progress is further accelerated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of heat preservation pipe, especially a heat -resisting type polyethylene polyurethane prefabricated direct -buried heat preservation pipe. BACKGROUND

[0002] The prefabricated direct -buried heat preservation pipe is formed by the working pipe of conveying medium, polyurethane rigid foam plastic and high -density polyethylene sleeve pipe, and is mainly used for regional heat supply outer network pipeline, and with the popularization of central heating of the country, its consumption is more and more large, and the application range is more and more wide.

[0003] The existing heat -resisting type polyethylene polyurethane prefabricated direct -buried heat preservation pipe needs to be connected between multiple heat preservation pipes before embedding, and the existing connecting mode is mostly hot melt connecting mode, and the connecting part after connecting will have part of the inner tube exposed, thus after hot melting, the multilayer heat -resisting type polyethylene polyurethane material is wound to the outer wall of the inner tube, so as to realize heat preservation processing to the exposed part, and the winding mode greatly wastes time, and brings great workload to the operator, and reduces the construction progress of the project, thus a heat -resisting type polyethylene polyurethane prefabricated direct -buried heat preservation pipe is needed to perfect the problem. TECHNICAL SOLUTION

[0004] The utility model discloses a heat -resisting type polyethylene polyurethane prefabricated direct -buried heat preservation pipe to solve the problem in the background art.

[0005] In order to achieve the above object, the utility model provides the following technical scheme: a heat -resisting type polyethylene polyurethane prefabricated direct -buried heat preservation pipe, including prefabricated direct -buried heat preservation pipe connection two half -round sleeve and hinge, two the half -round sleeve is hinged through the hinge between, and the inner wall of two half -round sleeve is fixedly bonded with arc mounting plate, the inner wall of arc mounting plate is fixedly bonded with the heat preservation layer of heat -resisting type polyethylene polyurethane material, the inner wall of heat preservation layer is fixedly installed with arc baffle, and the inner wall of arc baffle is attached to the outer wall of the inner tube of prefabricated direct -buried heat preservation pipe;

[0006] The side wall of two half -round sleeve is fixedly installed with first installation strip and second installation strip respectively, a plurality of round grooves are formed in the side of first installation strip, a plurality of screw holes are formed in the bottom of a plurality of round grooves, screw rods are screw mounted in the interiors of screw holes, and screw grooves are formed in the side wall of second installation strip and correspond to a plurality of screw holes.

[0007] The section side wall of two half -round sleeve is fixedly bonded with sealing strip, and a plurality of sealing strips are staggered.

[0008] Preferably, the inner wall of two half -round sleeve is fixedly installed with two arc sealing pads symmetrically.

[0009] Preferably, two arc-shaped sealing gaskets are arranged on two sides of the thermal insulation layer respectively, and the inner wall of the arc-shaped sealing gasket is attached to the outer wall of the prefabricated directly-buried thermal insulation pipe.

[0010] Preferably, a sealing cap is slidingly sealed on the inner wall of the circular groove, and the sealing cap is clamped to the outer side of the screw rod.

[0011] Preferably, a sealing ring is fixedly bonded to the outer wall of the sealing cap.

[0012] Preferably, a rubber pad is fixedly bonded to the side wall of the second mounting strip, and a through hole is formed in the rubber pad and matched with the threaded groove.

[0013] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0014] The heat-resistant polyethylene polyurethane prefabricated directly-buried thermal insulation pipe is provided with two half-round sleeve pipes, arc-shaped mounting plates, a thermal insulation layer, a first mounting strip, a second mounting strip, and bolts, etc., and when the thermal insulation pipe is hot-melt connected, the two half-round sleeve pipes are sleeved to the inner pipe connecting portion of the thermal insulation pipe, so that the arc-shaped partition plates and the thermal insulation layer installed on the inner walls of the two half-round sleeve pipes are attached to the side wall of the thermal insulation pipe, thereby wrapping the exposed position of the inner pipe, and then the first mounting strip and the second mounting strip are connected by the bolts, thereby improving the wrapping efficiency of the exposed position of the inner pipe after welding.

[0015] Compared with the prior art, the device can improve the wrapping efficiency of the thermal insulation layer after the prefabricated directly-buried thermal insulation pipe is welded, thereby further improving the engineering progress. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is a structural schematic view of two half-round sleeve pipes in the utility model;

[0019] Figure 3 It is a structural schematic view of the first mounting strip, the threaded hole and the screw rod in the utility model;

[0020] Figure 4 It is a structural schematic view of the utility model Figure 2A part structure amplification schematic view;

[0021] Figure 5 The utility model discloses Figure 2 B part structure amplification schematic view.

[0022] Mark explanation:

[0023] In the drawing: 1, semicircle sleeve; 2, arc mounting plate; 3, heat preservation layer; 4, arc baffle; 5, hinge; 6, first mounting strip; 7, second mounting strip; 8, screw hole; 9, screw; 10, sealing strip; 11, circular groove; 12, arc sealing gasket; 13, sealing cap; 14, sealing ring; 15, rubber pad. Specific implementation

[0024] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, some technical features known in the art are not described to avoid confusion with the utility model.

[0025] Unless the direction defined separately is indicated, the directions such as up, down, left, right, front, back, inner and outer involved in the present utility model are based on the directions such as up, down, left, right, front, back, inner and outer in the drawing shown in the present utility model, which are explained here.

[0026] The connection mode can adopt existing modes such as bonding, welding, bolt connection and the like, and the actual needs are accurate.

[0027] As Figures 1 to 5 The main body structure of the heat-resistant polyethylene polyurethane prefabricated direct-buried heat preservation pipe shown in the utility model is two semicircle sleeve pipes 1 and a hinge 5 for connecting the prefabricated direct-buried heat preservation pipe, the two semicircle sleeve pipes 1 are hinged through the hinge 5, and the two semicircle sleeve pipes 1 are conveniently sleeved to the outer wall of the inner pipe of the heat preservation pipe due to the hinging of the two semicircle sleeve pipes 1 through the hinge 5;

[0028] The inner wall of the two semicircle sleeve pipes 1 is fixedly bonded with the arc mounting plate 2, the inner wall of the arc mounting plate 2 is fixedly bonded with the heat preservation layer 3 made of heat-resistant polyethylene polyurethane material, the inner wall of the heat preservation layer 3 is fixedly installed with the arc baffle 4, and the inner wall of the arc baffle 4 is attached to the outer wall of the inner pipe of the prefabricated direct-buried heat preservation pipe, and the heat preservation layer 3 can be conveniently separated from the outer wall of the inner pipe of the heat preservation pipe due to the arrangement of the arc baffle 4, so that the service life of the heat preservation layer 3 can be improved;

[0029] The side walls of the two semicircular sleeves 1 are respectively fixedly mounted with a first mounting bar 6 and a second mounting bar 7. A plurality of circular grooves 11 are provided on one side of the first mounting bar 6. The bottoms of the plurality of circular grooves 11 are provided with threaded holes 8. The interiors of the threaded holes 8 are threadedly mounted with screw rods 9. Thanks to the arrangement of the circular grooves 11, the ends of the screw rods 9 can be easily retracted into the interiors of the circular grooves 11, thereby preventing the screw rods 9 from being exposed to the outside of the first mounting bar 6. Threaded grooves are provided on the side walls of the second mounting bar 7 corresponding to the plurality of threaded holes 8.

[0030] The side walls of the cross-sections of the two semicircular sleeves 1 are fixedly bonded with sealing strips 10, and the multiple sealing strips 10 are staggered with each other. Thanks to the multiple sealing strips 10 being staggered with each other, the sealing effect between the two semicircular sleeves 1 can be further improved.

[0031] Two arc-shaped sealing gaskets 12 are symmetrically fixed on the inner walls of the two semicircular sleeves 1. The two arc-shaped sealing gaskets 12 are respectively arranged on both sides of the insulation layer 3, and the inner walls of the arc-shaped sealing gaskets 12 are fitted to the outer wall of the prefabricated direct-buried insulation pipe. Through the setting of the arc-shaped sealing gaskets 12, an effective seal can be formed between the semicircular sleeve 1 and the outer wall of the insulation pipe.

[0032] The inner wall of the circular groove 11 is slidingly sealed with a sealing cap 13, and the sealing cap 13 is clamped to the outer side of the screw 9. The outer wall of the sealing cap 13 is fixedly bonded with a sealing ring 14. Thanks to the setting of the sealing cap 13, the circular groove 11 can be effectively sealed, thereby sealing the screw 9 and the end of the screw 9, thereby preventing the screw 9 from being exposed to the outside and corroded for a long time and causing rust.

[0033] A rubber pad 15 is fixedly bonded to the side wall of the second mounting bar 7 , and a through hole is opened on the rubber pad 15 to match the thread groove. The rubber pad 15 can further improve the sealing effect between the first mounting bar 6 and the second mounting bar 7 .

[0034] How it works

[0035] When using this heat-resistant polyethylene polyurethane prefabricated direct-buried insulation pipe, first, two heat-resistant polyethylene polyurethane prefabricated direct-buried insulation pipes are heat-welded. After the welding is stable, the two semicircular sleeves 1 are sleeved onto the outer side of the inner pipe wall at the welding point of the two insulation pipes. Then, the two semicircular sleeves 1 are rotated through the hinge 5 and sleeved onto the outer wall of the inner pipe. At this time, the two arc-shaped partitions 4 fixedly installed on the inner wall of the two semicircular sleeves 1 will fit into the outer wall of the inner pipe in the insulation pipe, thereby covering the exposed position of the inner pipe. Then, the first mounting bar 6 and the second mounting bar 7 fixedly installed on the side walls of the two semicircular sleeves 1 are threadedly connected by multiple screws 9, thereby realizing rapid covering of the exposed part of the inner pipe in the insulation pipe.

[0036] It has to be noted that, in the present document, the terms "comprising", "including", and "having" should be interpreted as specifying the presence of the stated features but not precluding the presence of one or more other features. It should also be noted that, in the present document, the term "or" should be interpreted as the logical or, i.e. requiring at least one of the presented options to be true.

[0037] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A heat-resistant polyethylene polyurethane prefabricated direct-buried thermal insulation pipe, comprising two semicircular sleeves (1) and a hinge (5) for connecting the prefabricated direct-buried thermal insulation pipe, characterized in that: The two semicircular sleeves (1) are hingedly connected by a hinge (5), and the inner walls of the two semicircular sleeves (1) are fixedly bonded with an arc-shaped mounting plate (2), the inner wall of the arc-shaped mounting plate (2) is fixedly bonded with an insulation layer (3) made of a heat-resistant polyethylene polyurethane material, and the inner wall of the insulation layer (3) is fixedly mounted with an arc-shaped partition (4), and the inner wall of the arc-shaped partition (4) is in contact with the outer wall of the inner pipe of the prefabricated direct-buried insulation pipe; A first mounting bar (6) and a second mounting bar (7) are fixedly mounted on the side walls of the two semicircular sleeves (1), respectively; a plurality of circular grooves (11) are provided on one side of the first mounting bar (6); threaded holes (8) are provided at the bottoms of the plurality of circular grooves (11); screw rods (9) are threadedly mounted inside the threaded holes (8); and threaded grooves are provided on the side walls of the second mounting bar (7) corresponding to the plurality of threaded holes (8); The side walls of the cut surfaces of the two semicircular sleeves (1) are both fixedly bonded with sealing strips (10), and the plurality of sealing strips (10) are staggered with each other.

2. The heat-resistant polyethylene polyurethane prefabricated direct-buried thermal insulation pipe according to claim 1, characterized in that: Two arc-shaped sealing pads (12) are symmetrically and fixedly mounted on the inner walls of the two semicircular sleeves (1).

3. The heat-resistant polyethylene polyurethane prefabricated direct-buried thermal insulation pipe according to claim 2, characterized in that: The two arc-shaped sealing pads (12) are respectively arranged on both sides of the thermal insulation layer (3), and the inner walls of the arc-shaped sealing pads (12) are in contact with the outer wall of the prefabricated direct-buried thermal insulation pipe.

4. The heat-resistant polyethylene polyurethane prefabricated direct-buried thermal insulation pipe according to claim 1, characterized in that: A sealing cap (13) is installed on the inner wall of the circular groove (11) in a sliding and sealing manner, and the sealing cap (13) is clamped to the outer side of the screw (9).

5. The heat-resistant polyethylene polyurethane prefabricated direct-buried thermal insulation pipe according to claim 4, characterized in that: A sealing ring (14) is fixedly bonded to the outer wall of the sealing cap (13).

6. The heat-resistant polyethylene polyurethane prefabricated direct-buried thermal insulation pipe according to claim 1, characterized in that: A rubber pad (15) is fixedly bonded to the side wall of the second mounting strip (7), and a through hole is provided on the rubber pad (15) to match the thread groove.

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