Alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube

Abstract

The present invention discloses an alkali-resistant, acid-resistant, and drag-resistant wire and cable protection tube, comprising an outer protective tube, a middle protective tube, and an inner protective tube. The outer protective tube is prepared as follows: ultra-high molecular weight polyethylene (UHMWPE): 60%-70%; glass fiber reinforcement: 20%-30%; compatibilizer: 5%-10%; antioxidant: 1%-2%; and lubricant: 1%-2%. The middle protective tube includes an acid-resistant protective tube and an alkali-resistant protective tube, and the acid-resistant protective tube is prepared as follows: polyvinylidene fluoride (PVDF): 60%-70%; high-density polyethylene (HDPE): 20%-30%; carbon fiber: 5%-10%; antioxidant: 1%-2%; and lubricant: 1%-2%. The present invention can select an appropriate middle protective tube according to the pH value of the region, and can be used stably for a long time in different acid and alkaline environments, effectively protecting wires and cables from corrosion. The inner protective tube has strong drag resistance.

Description

Technical Field

[0001] The invention relates to the field of cable protection tubes, in particular to alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tubes. Background Art

[0002] In modern industry and infrastructure construction, the safe operation of wires and cables is of vital importance. However, in many special environments, such as chemical plants, sewage treatment plants, marine engineering and other places, wires and cables are faced with the threat of acid and alkali corrosion and external force extrusion, pulling and other resistance. Traditional wire and cable protection tubes are often difficult to meet the requirements of acid and alkali resistance and resistance at the same time, resulting in the protection tubes being easily damaged, which in turn affects the service life and safety of the wires and cables. Therefore, alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tubes are urgently needed to solve the above problems. Summary of the Invention

[0003] The object of the present invention is to provide an alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: an alkali-resistant, acid-resistant and resistance-resistant wire and cable protective tube, comprising an outer protective tube, a middle protective tube and an inner protective tube, wherein the outer protective tube is prepared in the following steps:

[0005] Ultra-high molecular weight polyethylene (UHMWPE): 60%-70%;

[0006] Glass fiber reinforced materials: 20%-30%;

[0007] Compatibilizer: 5%-10%;

[0008] Antioxidant: 1%-2%;

[0009] Lubricant: 1%-2%;

[0010] Preparation method:

[0011] Accurately weigh each raw material to ensure the correct formula ratio. Dry the UHMWPE pellets to remove moisture. Add UHMWPE, glass fiber reinforcement, compatibilizer, antioxidant and lubricant to a high-speed mixer and mix thoroughly. The mixing time is about 15-20 minutes to ensure that all ingredients are fully dispersed. Add the mixed raw materials to a dedicated extruder. This extruder usually needs to have high extrusion pressure and temperature control capabilities to adapt to the processing characteristics of UHMWPE. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters. The temperature is generally between 200℃ and 240℃. The screw speed is adjusted according to the size and wall thickness of the pipe. The extruded pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is maintained at an appropriate temperature to ensure that the pipe cools quickly and maintains a good shape. The cooled pipe is cut to the required length.

[0012] Preferably, the middle layer protective tube includes an acid-resistant protective tube and an alkali-resistant protective tube, and the steps for preparing the acid-resistant protective tube are as follows:

[0013] Polyvinylidene fluoride (PVDF): 60%-70%;

[0014] High-density polyethylene (HDPE): 20%-30%;

[0015] Carbon fiber: 5%-10%;

[0016] Antioxidant: 1%-2%;

[0017] Lubricant: 1%-2%;

[0018] Preparation method:

[0019] Accurately weigh each raw material to ensure the accurate formula ratio, dry the PVDF and HDPE particles to remove moisture and prevent defects such as bubbles during processing, add PVDF, HDPE, carbon fiber, antioxidant and lubricant to a high-speed mixer, stir and mix thoroughly, the mixing time is about 10-15 minutes, so that the various raw materials are evenly dispersed, add the mixed raw materials to the plastic extruder, and under the action of heating and screw rotation, the extruder melts the raw materials and extrude them into the shape of a pipe. Adjust the extruder parameters such as temperature, screw speed and extrusion pressure. The general temperature is controlled at 200℃-250℃, and the screw speed is adjusted according to the pipe size and wall thickness. The extruded pipe is cooled by a cooling water tank to make it solidify quickly and maintain a good shape. The water temperature of the cooling water tank can be controlled at 20℃-30℃. Cut the cooled pipe according to the required length.

[0020] Preferably, the preparation steps of the alkali-resistant protective tube are as follows:

[0021] High-density polyethylene (HDPE): 70%-80%;

[0022] Polytetrafluoroethylene (PTFE): 10%-15%;

[0023] Glass fiber: 5%-10%;

[0024] Antioxidants: 1%-2%;

[0025] Lubricant: 1%-2%;

[0026] Preparation method:

[0027] Accurately weigh various raw materials according to the above formula ratio, dry the HDPE, PTFE and other plastic particles to remove moisture to prevent bubbles or reduce material properties during processing, add the dried HDPE, PTFE, glass fiber, antioxidant and lubricant to a high-speed mixer and mix thoroughly. The mixing time is generally 10-15 minutes to ensure that the various raw materials are fully dispersed. The mixed raw materials are added to the plastic extruder. The extruder usually consists of a feeding section, a compression section and a metering section. The raw materials are melted and extruded into a continuous pipe shape through heating and screw rotation. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters to obtain the best molding effect. Generally speaking, the extruder temperature range is 180℃-230℃, and the screw speed is adjusted according to the diameter and wall thickness of the pipe. The extruded pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is generally controlled at 20℃-30℃ to ensure that the pipe cools quickly and maintains a good shape. The cooled and shaped pipe is cut according to the required length.

[0028] Preferably, the steps for preparing the internal protection tube are as follows:

[0029] PVC resin: about 80%-90%;

[0030] Stabilizer: 2%-5%;

[0031] Lubricant: 1%-3%;

[0032] Filler: appropriate amount;

[0033] Preparation method:

[0034] Accurately weigh all the raw materials, dry the PVC resin, add the PVC resin, stabilizer, lubricant and filler into a high-speed mixer and mix them thoroughly. Then add the mixed raw materials into the extruder and extrude them through heating and screw rotation. The extrusion temperature is generally between 160℃ and 200℃. The screw speed is adjusted according to the pipe specifications. The extruded pipe is cooled in a cooling water tank to keep the inner wall smooth. The pipe is cut into the required length and packaged.

[0035] Preferably, the inner side of the outer protective tube is evenly provided with limiting arc-shaped grooves.

[0036] Preferably, limiting arcs are evenly provided on the acid-resistant protective tube and the alkali-resistant protective tube.

[0037] Preferably, the outer side of the inner protective tube is evenly provided with limiting arc-shaped protrusions.

[0038] Preferably, the outer side of the limiting arc is slidably connected to the limiting arc groove, and the inner side of the limiting arc is slidably connected to the outer side of the limiting arc protrusion.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] The present invention can select an appropriate middle-layer protective tube according to the pH value of the region, and can be used stably for a long time in different acid and alkaline environments, effectively protecting wires and cables from corrosion. The internal protective tube helps to improve the fluidity during the processing process by adding lubricant, making the inner wall of the pipe smoother and having strong resistance resistance. The glass fiber in the external protective tube can significantly enhance the strength and rigidity of the pipe, and can withstand various external forces to ensure the safety of wires and cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a schematic diagram of the main three-dimensional structure of the present invention;

[0042] Figure 2 This is a schematic diagram of the main body split structure in the present invention;

[0043] Figure 3 This is a schematic diagram of the structure of the acid-resistant protective tube in the present invention;

[0044] Figure 4 This is a schematic diagram of the structure of the alkali-resistant protective tube in the present invention.

[0045] In the figure: 1-external protective tube, 2-middle protective tube, 21-acid-resistant protective tube, 22-alkali-resistant protective tube, 3-inner protective tube, 4-limiting arc groove, 5-limiting arc, 6-limiting arc protrusion. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0047] See also Figures 1-4The present invention provides an embodiment of an alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube, comprising an outer protection tube 1, a middle protection tube 2 and an inner protection tube 3. The preparation steps of the outer protection tube 1 are as follows:

[0048] Ultra-high molecular weight polyethylene (UHMWPE): 60%-70%. UHMWPE has extremely high strength and wear resistance, and can provide the main high-strength performance for the pipeline;

[0049] Glass fiber reinforcement: 20%-30%, glass fiber can significantly enhance the strength and rigidity of the pipe;

[0050] Compatibilizer: 5%-10%, to ensure good bonding between UHMWPE and glass fiber;

[0051] Antioxidant: 1%-2%, to prevent plastic from oxidative aging during processing and use;

[0052] Lubricant: 1%-2%, to improve fluidity during processing;

[0053] Preparation method:

[0054] Accurately weigh each raw material to ensure the correct formula ratio. Dry the UHMWPE pellets to remove moisture. Add UHMWPE, glass fiber reinforcement, compatibilizer, antioxidant and lubricant to a high-speed mixer and mix thoroughly. The mixing time is about 15-20 minutes to ensure that all ingredients are fully dispersed. Add the mixed raw materials to a dedicated extruder. This extruder usually needs to have high extrusion pressure and temperature control capabilities to adapt to the processing characteristics of UHMWPE. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters. The temperature is generally between 200℃ and 240℃. The screw speed is adjusted according to the size and wall thickness of the pipe. The extruded pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is maintained at an appropriate temperature to ensure that the pipe cools quickly and maintains a good shape. The cooled pipe is cut to the required length.

[0055] The middle layer protection tube 2 includes an acid-resistant protection tube 21 and an alkali-resistant protection tube 22. The steps for preparing the acid-resistant protection tube 21 are as follows:

[0056] Polyvinylidene fluoride (PVDF): 60%-70%. PVDF has excellent chemical corrosion resistance, especially strong tolerance to acid, and can provide the main acid resistance and structural strength for the pipeline;

[0057] High-density polyethylene (HDPE): 20%-30%, HDPE can increase the toughness and processing performance of the pipe;

[0058] Carbon fiber: 5%-10%. Carbon fiber can enhance the strength and rigidity of the pipeline, and also help improve corrosion resistance;

[0059] Antioxidant: 1%-2%, to prevent plastic from oxidative aging during processing and use;

[0060] Lubricant: 1%-2%, improves fluidity during processing and reduces friction;

[0061] Preparation method:

[0062] Accurately weigh each raw material to ensure the accurate formula ratio, dry the PVDF and HDPE particles to remove moisture and prevent defects such as bubbles during processing, add PVDF, HDPE, carbon fiber, antioxidant and lubricant to a high-speed mixer, stir and mix thoroughly, the mixing time is about 10-15 minutes, so that the various raw materials are evenly dispersed, add the mixed raw materials to the plastic extruder, and under the action of heating and screw rotation, the extruder melts the raw materials and extrude them into the shape of a pipe. Adjust the extruder parameters such as temperature, screw speed and extrusion pressure. The general temperature is controlled at 200℃-250℃, and the screw speed is adjusted according to the pipe size and wall thickness. The extruded pipe is cooled by a cooling water tank to make it solidify quickly and maintain a good shape. The water temperature of the cooling water tank can be controlled at 20℃-30℃. Cut the cooled pipe according to the required length.

[0063] The steps for preparing the alkali-resistant protective tube 22 are as follows:

[0064] High-density polyethylene (HDPE): 70%-80%. HDPE has good corrosion resistance, strength and toughness, and can provide the main structural support for the pipeline;

[0065] Polytetrafluoroethylene (PTFE): 10%-15%. PTFE is well-known for its excellent corrosion resistance, especially its resistance to alkali, which can greatly improve the alkali resistance of the pipeline;

[0066] Glass fiber: 5%-10%. Glass fiber can enhance the strength and rigidity of the pipe, while also helping to improve its corrosion resistance.

[0067] Antioxidant: 1%-2%, to prevent oxidative degradation of plastics during processing and use;

[0068] Lubricant: 1%-2%, helps reduce friction during processing and improve material fluidity; Production method:

[0069] Accurately weigh various raw materials according to the above formula ratio, dry the HDPE, PTFE and other plastic particles to remove moisture to prevent bubbles or reduce material properties during processing, add the dried HDPE, PTFE, glass fiber, antioxidant and lubricant to a high-speed mixer and mix thoroughly. The mixing time is generally 10-15 minutes to ensure that the various raw materials are fully dispersed. The mixed raw materials are added to the plastic extruder. The extruder usually consists of a feeding section, a compression section and a metering section. The raw materials are melted and extruded into a continuous pipe shape through heating and screw rotation. Adjust the extruder temperature, screw speed and extrusion pressure and other parameters to obtain the best molding effect. Generally speaking, the extruder temperature range is 180℃-230℃, and the screw speed is adjusted according to the diameter and wall thickness of the pipe. The extruded pipe is cooled and shaped in a cooling water tank. The water temperature in the cooling water tank is generally controlled at 20℃-30℃ to ensure that the pipe cools quickly and maintains a good shape. The cooled and shaped pipe is cut according to the required length.

[0070] The steps for preparing the inner protective tube 3 are as follows:

[0071] PVC resin: about 80%-90%, PVC resin is the main component and determines the basic performance of the pipe;

[0072] Stabilizer: 2%-5%, to prevent PVC from decomposing during processing and use;

[0073] Lubricant: 1%-3%, helps improve fluidity during processing and makes the inner wall of the pipe smoother;

[0074] Filler: Appropriate amount can reduce costs while having little effect on the smoothness of the inner wall;

[0075] Preparation method:

[0076] Accurately weigh all the raw materials, dry the PVC resin, add the PVC resin, stabilizer, lubricant and filler into a high-speed mixer and mix them thoroughly. Then add the mixed raw materials into the extruder and extrude them through heating and screw rotation. The extrusion temperature is generally between 160℃ and 200℃. The screw speed is adjusted according to the pipe specifications. The extruded pipe is cooled in a cooling water tank to keep the inner wall smooth. The pipe is cut into the required length and packaged.

[0077] The inner side of the outer protective tube 1 is evenly provided with a limiting arc groove 4, the acid-resistant protective tube 21 and the alkali-resistant protective tube 22 are evenly provided with a limiting arc 5, and the outer side of the internal protective tube 3 is evenly provided with a limiting arc protrusion 6. The outer side of the limiting arc 5 is slidingly connected to the limiting arc groove 4, and the inner side of the limiting arc 5 is slidingly connected to the outer side of the limiting arc protrusion 6. The outer protective tube 1, the middle protective tube 2 and the inner protective tube 3 can be matched and connected through the limiting arc groove 4, the limiting arc 5 and the limiting arc protrusion 6 to avoid friction damage caused by rotation between each other.

[0078] Working principle: During use, first select the acid-resistant protective tube 21 or the alkali-resistant protective tube 22 according to the pH value of the required wiring area, then insert the middle protective tube 2 into the outside of the internal protective tube 3, and insert the outer protective tube 1 into the outside of the middle protective tube 2, and the inner side of the limiting arc 5 is inserted into the outer side of the limiting arc protrusion 6, and the inner side of the limiting arc groove 4 is inserted into the outer side of the limiting arc 5, and then the assembled outer protective tube 1 is laid on the line, and then the outer protective tube 1 is hot-welded and connected by a hot welding machine. After connection, the cable is inserted into the inside of the internal protective tube 3.

[0079] While 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 alterations may be made to these embodiments without departing from the spirit and scope of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube, comprising an outer protection tube (1), a middle protection tube (2) and an inner protection tube (3), characterized in that: The steps for preparing the outer protective tube (1) are as follows: Ultra-high molecular weight polyethylene (UHMWPE): 60% - 70%; Glass fiber: 20% - 30%; Compatibilizer: 5% - 10%; Antioxidant: 1% - 2%; Lubricant: 1% - 2%; the sum of the percentages of the above components is 100%; Preparation method: Accurately weigh all raw materials to ensure the correct formula ratio. Dry the UHMWPE pellets to remove moisture. Add UHMWPE, glass fiber, compatibilizer, antioxidant and lubricant to a high-speed mixer and mix thoroughly for 15-20 minutes to ensure that all ingredients are fully dispersed. Add the mixed raw materials to the extruder and adjust the extruder temperature, screw speed and extrusion pressure between 200℃ and 240℃. Adjust the screw speed according to the size and wall thickness of the pipe. Cool the extruded pipe in a cooling water tank to shape it. The water temperature in the cooling water tank is maintained at an appropriate temperature to ensure that the pipe cools quickly and maintains a good shape. Cut the cooled pipe to the required length. The middle layer protection tube (2) comprises an acid-resistant protection tube (21) and an alkali-resistant protection tube (22). The steps for preparing the acid-resistant protection tube (21) are as follows: Polyvinylidene fluoride (PVDF): 60% - 70%; High-density polyethylene (HDPE): 20% - 30%; Carbon fiber: 5% - 10%; Antioxidant: 1% - 2%; Lubricant: 1% - 2%; the sum of the percentages of the above components is 100%; Preparation method: Accurately weigh each raw material to ensure the correct formula ratio, dry the PVDF and HDPE particles to remove moisture, add PVDF, HDPE, carbon fiber, antioxidant and lubricant to a high-speed mixer, stir and mix thoroughly for 10-15 minutes to evenly disperse the various raw materials, add the mixed raw materials to the plastic extruder, and under the action of heating and screw rotation, the extruder melts the raw materials and extrude them into the shape of a pipe. Adjust the temperature, screw speed and extrusion pressure of the extruder. The temperature is controlled at 200℃-250℃. The screw speed is adjusted according to the pipe size and wall thickness. The extruded pipe is cooled by a cooling water tank to make it solidify quickly and maintain a good shape. The water temperature of the cooling water tank is controlled at 20℃-30℃. Cut the cooled pipe according to the required length. The steps for preparing the alkali-resistant protective tube (22) are as follows: High-density polyethylene (HDPE): 70%-80%; polytetrafluoroethylene (PTFE): 10%-15%; glass fiber: 5%-10%; Antioxidants: 1%-2%; Lubricant: 1%-2%; the sum of the percentages of the above components is 100%; Preparation method: Accurately weigh various raw materials according to the above formula ratio, dry the HDPE and PTFE plastic particles to remove moisture, add the dried HDPE, PTFE, glass fiber, antioxidant and lubricant into a high-speed mixer, mix them thoroughly and evenly, and the mixing time is 10-15 minutes to ensure that the various raw materials are fully dispersed. Add the mixed raw materials to the plastic extruder. The extruder consists of a feeding section, a compression section and a metering section. The raw materials are melted and extruded into a continuous pipe shape through heating and screw rotation. Adjust the temperature, screw speed and extrusion pressure of the extruder. The temperature range of the extruder is 180℃-230℃, and the screw speed is adjusted according to the diameter and wall thickness of the pipe. The extruded pipe is cooled and shaped through a cooling water tank. The water temperature in the cooling water tank is controlled at 20℃-30℃ to ensure that the pipe cools quickly and maintains a good shape. Cut the cooled and shaped pipe according to the required length.

2. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 1, characterized in that: The steps for preparing the inner protective tube (3) are as follows: PVC resin: 80%-90%; stabilizer: 2%-5%; Lubricant: 1%-3%; Filler: appropriate amount; the sum of the percentages of the above components is 100%; Preparation method: Accurately weigh all raw materials, dry the PVC resin, add the PVC resin, stabilizer, lubricant and filler into a high-speed mixer and mix them thoroughly. Then add the mixed raw materials into the extruder and extrude them through heating and screw rotation. The extrusion temperature is between 160℃ and 200℃. The screw speed is adjusted according to the pipe specifications. The extruded pipe is cooled in a cooling water tank to keep the inner wall smooth. The pipe is cut into the required length and packaged.

3. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 1, characterized in that: Limiting arc-shaped grooves (4) are evenly provided on the inner side of the outer protective tube (1).

4. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 3 is characterized by: Limiting arcs (5) are evenly provided on the acid-resistant protective tube (21) and the alkali-resistant protective tube (22).

5. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 4, characterized in that: The outer side of the internal protection tube (3) is evenly provided with limiting arc-shaped protrusions (6).

6. The alkali-resistant, acid-resistant and resistance-resistant wire and cable protection tube according to claim 5, characterized in that: The outer side of the limiting arc (5) is slidably connected to the limiting arc groove (4), and the inner side of the limiting arc (5) is slidably connected to the outer side of the limiting arc protrusion (6).

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