Anti-aging wire and cable protection tube with long service life

Abstract

The invention discloses an anti-aging electric wire and cable protection pipe with long service life, which comprises a cable protection main pipe, and is characterized in that an anti-aging protection pipe is nested on the outer side of the cable protection main pipe, a thermal insulation pipe is nested on the outer side of the anti-aging protection pipe, and a reflective layer covers the outer side of the thermal insulation pipe. The outer side of the reflective layer is uniformly provided with a ribbon; the preparation steps of the anti-aging protective tube are as follows: 60%-70% of HDPE (High Density Polyethylene); polypropylene (PP): 15%-25%; and 5%-15% of polyvinyl chloride (PVC). A good light reflecting effect is achieved through the light reflecting layer, most ultraviolet rays can be reflected, damage of the ultraviolet rays to each layer structure of the protection pipe is reduced, the influence of external temperature environment change on the internal structure of the wire and cable protection pipe can be reduced through the arrangement of the heat preservation pipe, and the service life of the whole protection pipe system is prolonged.

Description

Technical Field

[0001] The invention relates to the field of cable protection tubes, in particular to a wire and cable protection tube with long service life and anti-aging. Background Art

[0002] In the fields of electricity, communications, etc., the safe operation of wires and cables is of vital importance. In order to protect wires and cables from the influence of the external environment, protective tubes are usually used. However, there are some problems with the existing wire and cable protective tubes during use, such as insufficient anti-aging performance and short service life. As time goes by, especially outdoor protective tubes are easily affected by ultraviolet rays, temperature changes, chemicals and other factors, causing aging and embrittlement, resulting in a decrease in its protective performance, and even possible rupture and damage, which affects the normal use and safety of wires and cables. Therefore, there is an urgent need for wire and cable protective tubes with long service life and anti-aging to solve the above problems. Summary of the invention

[0003] The object of the present invention is to provide a wire and cable protection tube with long service life and anti-aging properties, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a long-life anti-aging wire and cable protection tube, comprising a cable protection main tube, an anti-aging protection tube is nested on the outside of the cable protection main tube, an insulation tube is nested on the outside of the anti-aging protection tube, the outside of the insulation tube is covered with a reflective layer, and the outside of the reflective layer is evenly provided with cable ties. The steps of preparing the anti-aging protection tube are as follows:

[0005] High-density polyethylene (HDPE): 60%-70%;

[0006] Polypropylene (PP): 15%-25%;

[0007] Polyvinyl chloride (PVC): 5%-15%;

[0008] UV absorber: 1%-3%;

[0009] Antioxidants: 0.5%-2%;

[0010] Light stabilizer: 0.5%-2%;

[0011] Glass fiber: 5%-10%;

[0012] Lubricant: 0.5%-1%;

[0013] Flame retardant: 1%-3%;

[0014] Pigment: appropriate amount (add as needed).

[0015] Preferably, the manufacturing method of the aging-resistant protective tube is as follows:

[0016] Raw material pretreatment

[0017] Dry high-density polyethylene, polypropylene, and polyvinyl chloride plastic particles to remove moisture and prevent bubbles and hydrolysis during processing. The drying temperature is generally 80°C-100°C and the drying time is 2-4 hours;

[0018] Mixing

[0019] Add the pretreated plastic particles, anti-aging additives, glass fibers, lubricants, flame retardants and pigment raw materials into a high-speed mixer according to the formula ratio for mixing and stirring. The mixing time is 5-10 minutes and the stirring speed is 500-1000 rpm to ensure that all raw materials are fully mixed;

[0020] Extrusion

[0021] Add the mixed raw materials into the extruder for extrusion molding. The extruder adopts a single-screw or twin-screw extruder. The extrusion temperature is adjusted according to different plastic raw materials and additives. The extrusion temperature is between 150℃-250℃;

[0022] Cooling and shaping

[0023] The extruded plastic pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is 20℃-40℃. The cooling time is adjusted according to the size and wall thickness of the pipe to ensure that the pipe is cooled evenly during the cooling process to avoid deformation and stress concentration.

[0024] Cutting and packaging

[0025] After cooling and shaping, the plastic pipe is cut into a certain length using an automatic cutting machine to ensure the accuracy and consistency of the cutting size;

[0026] The cut plastic pipes are packaged, generally in plastic bags or carton packaging materials, to prevent the pipes from being damaged and contaminated during transportation and storage.

[0027] Preferably, the thickness of the thermal insulation pipe is 1 cm, and the thermal insulation pipe comprises an outer protective layer and an inner thermal insulation layer.

[0028] Preferably, the outer protective layer of the thermal insulation pipe has a thickness of 0.2 cm and is made of polyethylene.

[0029] Preferably, the inner insulation layer of the insulation pipe has a thickness of 0.8 cm, and the material is a mixture of 0.7 parts of polystyrene foam and 0.3 parts of glass wool.

[0030] Preferably, the outer side of the reflective layer is a reflective portion, and the inner side material of the reflective layer is a polyester film, and the outer side reflective material is aluminum plating.

[0031] Preferably, the reflective layer is tied to the outside of the insulation pipe by the cable tie.

[0032] Preferably, the cable protection main pipe is made of fiberglass.

[0033] Compared with the prior art, the present invention has the following beneficial effects:

[0034] The present invention achieves a good reflective effect through the reflective layer, can reflect most of the ultraviolet rays, and reduce the damage of ultraviolet rays to the various layers of the protective tube structure. The provision of the thermal insulation tube can reduce the impact of external temperature environment changes on the internal structure of the wire and cable protective tube, and extend the service life of the entire protective tube system. The aging-resistant protective tube adopts high-density polyethylene, polypropylene, polyvinyl chloride and other materials with a specific formula ratio, and is added with anti-aging additives such as ultraviolet absorbers, antioxidants and light stabilizers. It can effectively absorb ultraviolet rays, inhibit oxidation reactions and capture free radicals, prevent plastic pipes from aging due to ultraviolet radiation and oxidation, and greatly extend the service life of the internal cable protection main tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0036] Figure 2 It is a schematic diagram of the main body cutaway structure in the present invention.

[0037] In the figure: 1-cable protection main pipe, 2-aging-resistant protection pipe, 3-insulation pipe, 4-reflective layer, 5-cable tie. DETAILED DESCRIPTION

[0038] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0039] See also Figure 1 , Figure 2 The present invention provides an embodiment: a long-life anti-aging wire and cable protection tube, comprising a cable protection main tube 1, an anti-aging protection tube 2 is nested on the outside of the cable protection main tube 1, an insulation tube 3 is nested on the outside of the anti-aging protection tube 2, the insulation tube 3 is covered with a reflective layer 4 on the outside, and a cable tie 5 is evenly arranged on the outside of the reflective layer 4. The preparation steps of the anti-aging protection tube 2 are as follows:

[0040] High-density polyethylene (HDPE): 60%-70%, with good corrosion resistance, mechanical strength and chemical stability, is the main base material for plastic pipes;

[0041] Polypropylene (PP): 15%-25%, increasing the hardness and heat resistance of the pipe;

[0042] Polyvinyl chloride (PVC): 5%-15%, improves the chemical corrosion resistance and flame retardancy of the pipeline;

[0043] Ultraviolet absorber: 1%-3%, can absorb ultraviolet rays and prevent plastic pipes from aging due to ultraviolet rays;

[0044] Antioxidant: 0.5%-2%, which can inhibit the oxidation reaction of plastics and extend the service life of pipes;

[0045] Light stabilizer: 0.5%-2%, can capture free radicals and prevent plastic from degrading under light;

[0046] Glass fiber: 5%-10%, improves the mechanical strength and heat resistance of the pipeline;

[0047] Lubricant: 0.5%-1%, reduces the friction of plastics during processing and improves the surface quality of the pipe;

[0048] Flame retardant: 1%-3%, improves the flame retardant performance of the pipeline;

[0049] Pigment: appropriate amount (add as needed).

[0050] The manufacturing method of the aging-resistant protective tube 2 is as follows:

[0051] Raw material pretreatment

[0052] Dry high-density polyethylene, polypropylene, and polyvinyl chloride plastic particles to remove moisture and prevent bubbles and hydrolysis during processing. The drying temperature is generally 80°C-100°C for 2-4 hours. Surface treatment of glass fiber is performed to improve its compatibility and dispersibility with plastics. Coupling agents such as silane coupling agents can be used to treat glass fiber;

[0053] Mixing

[0054] Add the pretreated plastic particles, anti-aging additives, glass fibers, lubricants, flame retardants and pigment raw materials into a high-speed mixer according to the formula ratio for mixing and stirring. The mixing time is 5-10 minutes and the stirring speed is 500-1000 rpm to ensure that all raw materials are fully mixed;

[0055] Extrusion

[0056] Add the mixed raw materials into the extruder for extrusion molding. The extruder adopts a single-screw or twin-screw extruder. The extrusion temperature is adjusted according to different plastic raw materials and additives. The extrusion temperature is between 150℃-250℃. The screw speed, extrusion pressure and other parameters of the extruder also need to be adjusted according to the specifications and production speed of the pipeline to ensure the quality and dimensional accuracy of the pipeline;

[0057] Cooling and shaping

[0058] The extruded plastic pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is 20℃-40℃. The cooling time is adjusted according to the size and wall thickness of the pipe to ensure that the pipe is cooled evenly during the cooling process to avoid deformation and stress concentration.

[0059] Cutting and packaging

[0060] After cooling and shaping, the plastic pipe is cut into a certain length using an automatic cutting machine to ensure the accuracy and consistency of the cutting size;

[0061] The cut plastic pipes are packaged, generally in plastic bags or carton packaging materials, to prevent the pipes from being damaged and contaminated during transportation and storage.

[0062] The thickness of the insulation pipe 3 is 1 cm. The insulation pipe 3 includes an external protective layer and an internal insulation layer. The thickness of the external protective layer of the insulation pipe 3 is 0.2 cm, and the material is polyethylene. Polyethylene has good waterproof properties to prevent moisture from penetrating into the insulation layer. Once moisture enters the insulation layer, its insulation effect will be greatly reduced, and the insulation material may become damp, moldy or even damaged. The internal insulation layer of the insulation pipe 3 is 0.8 cm thick, and the material is a mixture of 0.7 parts of polystyrene foam and 0.3 parts of glass wool. These materials have low thermal conductivity and can effectively prevent heat transfer.

[0063] The outer side of the reflective layer 4 is the reflective part, and the inner side material of the reflective layer 4 is polyester film, and the outer side reflective material is aluminum-plated. A good reflective effect is achieved by plating a layer of aluminum on the surface of the plastic film. Compared with aluminum foil, aluminum-plated film has a lower cost and also has certain flexibility and corrosion resistance. It has good moisture-proof performance and can prevent moisture from penetrating into the insulation layer. The reflective layer 4 is tied to the outside of the insulation pipe 3 by a cable tie 5.

[0064] The cable protection main pipe 1 is made of fiberglass, which has excellent corrosion resistance, strong resistance to various chemical substances such as acid, alkali, salt, etc., high strength, light weight, easy installation, good insulation performance, and good heat resistance and flame retardancy.

[0065] Working principle: During use, first, nest the aging-resistant protective tube 2 on the outside of the cable protection main tube 1, then nest the thermal insulation tube 3 on the outside of the aging-resistant protective tube 2, and then wrap the reflective layer 4 on the outside of the thermal insulation tube 3, completely cover the thermal insulation tube 3 and fix the reflective layer 4 on the outside of the thermal insulation tube 3 through the cable tie 5. When exposed to sunlight ultraviolet rays, the reflective layer 4 reflects most of the ultraviolet rays, reducing the damage caused by ultraviolet rays to the cable protection main tube 1, the aging-resistant protective tube 2 and the thermal insulation tube 3. The protective layer on the outside of the thermal insulation tube 3 provides protection for the internal thermal insulation layer to prevent water from damaging the thermal insulation layer. The thermal insulation layer of the thermal insulation tube 3 insulates the cable protection main tube 1 and the aging-resistant protective tube 2, reducing the damage to the cable protection main tube 1 and the aging-resistant protective tube 2 caused by changes in the external temperature environment. The aging-resistant protective tube 2 provides external anti-aging protection for the cable protection main tube 1 to block damage that may be caused by external environmental factors, thereby increasing the service life of the cable protection main tube 1.

[0066] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that numerous changes, modifications, substitutions and alterations may be made to the embodiments without departing from the spirit and scope of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A long-life anti-aging wire and cable protection tube, comprising a cable protection main tube (1), characterized in that: The cable protection main pipe (1) is embedded with an anti-aging protection pipe (2), the anti-aging protection pipe (2) is embedded with an insulation pipe (3), the insulation pipe (3) is covered with a reflective layer (4) on the outside, and the reflective layer (4) is evenly provided with a cable tie (5) on the outside. The steps for preparing the anti-aging protection pipe (2) are as follows: High-density polyethylene (HDPE): 60%-70%; Polypropylene (PP): 15%-25%; Polyvinyl chloride (PVC): 5%-15%; UV absorber: 1%-3%; Antioxidants: 0.5%-2%; Light stabilizer: 0.5%-2%; Glass fiber: 5%-10%; Lubricant: 0.5%-1%; Flame retardant: 1%-3%; Pigment: appropriate amount (add as needed).

2. The long-life anti-aging wire and cable protection tube according to claim 1 is characterized by: The manufacturing method of the anti-aging protective tube (2) is as follows: Raw material pretreatment Dry high-density polyethylene, polypropylene, and polyvinyl chloride plastic particles to remove moisture and prevent bubbles and hydrolysis during processing. The drying temperature is generally 80°C-100°C and the drying time is 2-4 hours; Mixing Add the pretreated plastic particles, anti-aging additives, glass fibers, lubricants, flame retardants and pigment raw materials into a high-speed mixer according to the formula ratio for mixing and stirring. The mixing time is 5-10 minutes and the stirring speed is 500-1000 rpm to ensure that all raw materials are fully mixed; Extrusion Add the mixed raw materials into the extruder for extrusion molding. The extruder adopts a single-screw or twin-screw extruder. The extrusion temperature is adjusted according to different plastic raw materials and additives. The extrusion temperature is between 150℃-250℃; Cooling and shaping The extruded plastic pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is 20℃-40℃. The cooling time is adjusted according to the size and wall thickness of the pipe to ensure that the pipe is cooled evenly during the cooling process to avoid deformation and stress concentration. Cutting and packaging After cooling and shaping, the plastic pipe is cut into a certain length using an automatic cutting machine to ensure the accuracy and consistency of the cutting size; The cut plastic pipes are packaged, generally in plastic bags or carton packaging materials, to prevent the pipes from being damaged and contaminated during transportation and storage.

3. The long-life anti-aging wire and cable protection tube according to claim 2 is characterized by: The thickness of the thermal insulation pipe (3) is 1 cm, and the thermal insulation pipe (3) comprises an external protective layer and an internal thermal insulation layer.

4. The long-life anti-aging wire and cable protection tube according to claim 3 is characterized by: The thickness of the outer protective layer of the thermal insulation pipe (3) is 0.2 cm, and the material is polyethylene.

5. The long-life anti-aging wire and cable protection tube according to claim 3 is characterized by: The thickness of the internal insulation layer of the insulation pipe (3) is 0.8 cm, and the material is a mixed material of 0.7 parts of polystyrene foam and 0.3 parts of glass wool.

6. The long-life anti-aging wire and cable protection tube according to claim 1, characterized in that: The outer side of the reflective layer (4) is a reflective part, and the inner side material of the reflective layer (4) is a polyester film, and the outer side reflective material is aluminum plating.

7. The long-life anti-aging wire and cable protection tube according to claim 1 is characterized by: The reflective layer (4) is tied to the outside of the thermal insulation pipe (3) by means of the tie band (5).

8. The long-life anti-aging wire and cable protection tube according to claim 1, characterized in that: The cable protection main pipe (1) is made of glass fiber reinforced plastic.

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