Protective device for steel-plastic composite pipe

Abstract

The utility model discloses a protective device of a steel-plastic composite pipe, which comprises a protective device body, protective pipe bodies are arranged on the protective device body, the protective pipe bodies are two semi-cylindrical pipe bodies, a reinforcing hoop binding groove is arranged in the center of the outer wall of each protective pipe body, and a fixed connector A and a fixed connector B are respectively arranged at two ends of each protective pipe body. Rubber gaskets are arranged on the inner wall of the fixed connector A and the inner wall of the fixed connector B, the inner surfaces of the rubber gaskets are in a corrugated shape, clamping heads are arranged at the joint of the fixed connector A and the fixed connector B at the two ends of the protection pipe body, and connecting clamping heads and connecting clamping grooves are formed in the clamping heads in a matched mode. Omnibearing wrapping protection is carried out in a wrapping mode, and good pressure-resistant and weather-resistant protection effects are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of protection of steel-plastic composite pipes, in particular to a protection device for steel-plastic composite pipes. Background Art

[0002] Steel-plastic composite pipe is a new type of pipeline material developed in recent years. It is based on seamless steel pipe, welded steel pipe and galvanized steel pipe, and is compounded with various types of plastics (such as epoxy resin, polyethylene, etc.).

[0003] The steel-plastic composite pipe is composed of a metal thin-walled pipe lined with an engineering plastic pipe. The material of the lining pipe is ultra-high molecular weight polyethylene. The steel-plastic composite pipe is hygienic and non-toxic, has excellent low-temperature resistance, and is wear-resistant and does not scale.

[0004] 1. When installing plastic pipes, the impact of the environment on the installation quality should be considered. Generally, when the temperature is higher than 40℃ or lower than 0℃, it is not suitable for construction and installation;

[0005] 2. Since the linear expansion coefficient of plastic pipes is large, generally about 8 times that of steel, thermal compensation should be considered during installation. Generally, natural compensation is the main method. Glass fiber reinforced polypropylene pipe compensators can be used, and polytetrafluoroethylene or rubber bellows expansion joints can also be used for compensation;

[0006] 3. Pipe supports should be used for overhead pipelines. Pipe supports can be made of angle steel and cross-sectioned steel pipes so that the pipelines can be freely extended and retracted on the pipe supports. The distance between pipeline supports is shown in the table below;

[0007] 4. For buried pipelines, the burial depth is generally less than 0.7m, and they should not be affected by ground traffic. The excavated trench should be flat, and the stones, broken bricks, glass and other hard objects on the bottom and both sides of the trench should be cleaned up. High-quality backfill soil should be used for backfilling, and the soil around the pipe should be filled densely without any gravel.

[0008] Plastic-lined composite steel pipe is made of thermoplastic plastic pipes such as polyethylene (PE), heat-resistant polyethylene (PE-RT), cross-linked polyethylene (PE-X) etc. lined on the inner wall of steel pipe according to the requirements of the conveying medium. Therefore, it has the advantages of both steel pipe and plastic pipe.

[0009] Characteristics of steel-plastic composite pipe

[0010] Characteristics of steel-plastic composite steel pipes: hygienic and non-toxic, in line with the requirements of national food hygiene standards (GB / T17219); corrosion-resistant and non-scaling; the plastic lining has low thermal conductivity, which is heat-insulating and energy-saving; the appearance is luxurious, decorative, and has low water flow resistance; easy installation, safe and reliable connection, and no leakage; good heat resistance and anti-aging properties.

[0011] However, when the steel-plastic composite pipe is exposed to the air for a long time, the steel-plastic composite pipe may be oxidized or squeezed by external forces, which greatly shortens the service life of the steel-plastic composite pipe. Therefore, an improved technology is urgently needed to solve this problem in the prior art. Utility Model Content

[0012] The utility model aims to provide a protective tube body provided on a protective device body, the protective tube body being two semi-cylindrical tube bodies, a reinforcing hoop bundling groove being provided in the center of the outer wall of the protective tube body, fixed connectors A and B being provided at both ends of the protective tube body respectively, rubber gaskets being provided on the inner walls of the fixed connectors A and B, the inner surfaces of the rubber gaskets being corrugated, card joints being provided at the joints between the fixed connectors A and B at both ends of the protective tube body, connecting card joints and connecting card grooves being provided on the connecting card joints, the structure being simple, and all-round wrapping protection being performed in a wrapping manner, the protective device for the steel-plastic composite pipe having good pressure resistance and weathering resistance being provided, so as to solve the problems raised in the above-mentioned background technology.

[0013] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a protective device for a steel-plastic composite pipe, comprising a protective device body, a protective pipe body is arranged on the protective device body, a reinforcing hoop is arranged at the center of the outer wall of the protective pipe body, and fixed connectors A and B are arranged at the ends of both ends of the protective pipe body, respectively, and the fixed connectors A and B are an integrated structure with the protective pipe body;

[0014] The inner walls of the fixed connector A and the fixed connector B are both provided with rubber gaskets, and the rubber gaskets on the inner walls of the fixed connector A and the fixed connector B are fixed and bonded by glue.

[0015] Preferably, the protective tube body is cylindrical, and is composed of two semi-cylindrical tubes spliced ​​together, a connection hole is provided on one side edge of the protective tube body, and a connection slot is provided on the other side edge of the protective tube body;

[0016] The outer wall of the protection tube body is provided with a reinforcing hoop bundling groove, and the reinforcing hoop is arranged inside the reinforcing hoop bundling groove of the outer wall of the protection tube body.

[0017] Preferably, the fixed connector A and the fixed connector B are two semicircular hoops, and a clamping joint is provided at the two connecting joints of the fixed connector A and the fixed connector B. The clamping joint includes a connecting clamp and a clamping groove. The connecting clamp protrudes outward and is an integral structure with the fixed connector. The clamping groove is arranged inside the end of the fixed connector, and the notch of the clamping groove is semicircular.

[0018] Preferably, the thickness of the fixed connector A and the fixed connector B is twice that of the protective tube body.

[0019] Preferably, the outer wall of the protective tube body is provided with a protective coating layer.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] (1) The thickness of the fixed connector A and the fixed connector B is twice that of the protective tube body 2, so that when the protective device body is installed on the outside of the steel-plastic composite tube, it is convenient to press with hands to splice the two semi-cylindrical tubes together;

[0022] (2) The outer wall of the protective pipe body is provided with a reinforcing hoop bundling groove, and the reinforcing hoop is arranged inside the reinforcing hoop bundling groove on the outer wall of the protective pipe body. The reinforcing hoop bundling groove is used to effectively limit the bundling position of the reinforcing hoop, so as to ensure the stability of the reinforcing hoop on the bundled protective pipe body;

[0023] (3) The protective device has a simple structure and adopts a wrapping method to provide all-round wrapping protection, which has good pressure resistance and weathering resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the main structure of the protective device of the utility model;

[0025] Figure 2 This is a schematic diagram of the end of the protective device of the utility model;

[0026] Figure 3 This is a schematic diagram of the structure of the card connector of the utility model.

[0027] In the figure: 1. Protective device body; 2. Protective tube body; 3. Reinforcement hoop; 4. Fixed connector A; 5. Fixed connector B; 6. Rubber gasket; 7. Card connector; 8. Connecting card; 9. Card slot. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-3The utility model provides a technical solution: a protective device for a steel-plastic composite pipe, comprising a protective device body 1, a protective pipe body 2 is arranged on the protective device body 1, a reinforcing hoop 3 is arranged in the center of the outer wall of the protective pipe body 2, and fixed connectors A4 and B5 are respectively arranged at both ends of the protective pipe body 2, and rubber washers 6 are arranged on the inner walls of the fixed connectors A4 and B5, and the rubber washers 6 on the inner walls of the fixed connectors A4 and B5 are fixedly bonded by glue, and the fixed connectors A4, B5 and the protective pipe body 2 are an integrated structure.

[0030] The protective tube body 2 is cylindrical, and the protective tube body 2 is composed of two semi-cylindrical tubes spliced ​​together. A connecting hole is provided on one side edge of the protective tube body 2, and a connecting groove is provided on the other side edge of the protective tube body 2. A reinforcing hoop bundling groove is provided on the outer wall of the protective tube body 2. The reinforcing hoop 3 is arranged inside the reinforcing hoop bundling groove on the outer wall of the protective tube body 2. The reinforcing hoop bundling groove is utilized to effectively limit the bundling position of the reinforcing hoop 3, thereby ensuring the stability of the reinforcing hoop 3 on the bundled protective tube body 2.

[0031] The outer wall of the protective tube body 2 is provided with a protective coating layer, which makes the protective tube body 2 have better corrosion resistance, so that the protective device body 1 has a better protective effect on the steel-plastic composite pipe.

[0032] The thickness of the fixed connector A4 and the fixed connector B5 is twice that of the protective tube body 2, which makes it convenient to press with hands when installing the protective device body 1 on the outside of the steel-plastic composite pipe to splice the two semi-cylindrical tubes together.

[0033] The fixed connector A4 and the fixed connector B5 are two semicircular hoops. A clamping joint 7 is provided at the two connecting joints of the fixed connector A4 and the fixed connector B5. The clamping joint 7 includes a connecting clamp 8 and a clamping groove 9. The connecting clamp 8 protrudes outward and is an integrated structure with the fixed connector. The clamping groove 9 is arranged inside the end of the fixed connector, and the notch of the clamping groove 9 is semicircular.

[0034] The protective device has a simple structure and adopts a wrapping method to provide all-round wrapping protection, and has a good protective effect against compression and weathering.

[0035] Although embodiments of the present invention 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 invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A protective device for a steel-plastic composite pipe, comprising a protective device body (1), characterized in that: The protective device body (1) is provided with a protective tube body (2), a reinforcing hoop (3) is provided at the center of the outer wall of the protective tube body (2), and two end heads of the protective tube body (2) are respectively provided with a fixed connector A (4) and a fixed connector B (5), and the fixed connector A (4), the fixed connector B (5) and the protective tube body (2) are an integral structure; The inner walls of the fixed connector A (4) and the fixed connector B (5) are both provided with rubber washers (6), and the rubber washers (6) on the inner walls of the fixed connector A (4) and the fixed connector B (5) are fixed and bonded by glue.

2. The protective device for a steel-plastic composite pipe according to claim 1, characterized in that: The protective tube body (2) is cylindrical and is composed of two semi-cylindrical tubes spliced ​​together. A connection hole is provided on one side edge of the protective tube body (2), and a connection slot is provided on the other side edge of the protective tube body (2). The outer wall of the protective tube body (2) is provided with a reinforcing hoop bundling groove, and the reinforcing hoop is arranged inside the reinforcing hoop bundling groove of the outer wall of the protective tube body (2).

3. The protective device for a steel-plastic composite pipe according to claim 1, characterized in that: The fixed connector A (4) and the fixed connector B (5) are in the shape of two semicircular hoops. A clamping joint (7) is provided at the two joints of the fixed connector A (4) and the fixed connector B (5). The clamping joint (7) comprises a connecting clamp (8) and a clamping groove (9). The connecting clamp (8) protrudes outward and is an integral structure with the fixed connector. The clamping groove (9) is provided inside the end of the fixed connector. The notch of the clamping groove (9) is in the shape of a semicircular arc.

4. The protective device for a steel-plastic composite pipe according to claim 1, characterized in that: The thickness of the fixed connector A (4) and the fixed connector B (5) is twice that of the protective tube body (2).

5. The protective device for a steel-plastic composite pipe according to claim 1, characterized in that: The outer wall of the protective tube body (2) is provided with a protective coating layer.

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