An insulating anticorrosive and friction-resistant cable and a preparation method thereof

Abstract

The application discloses an insulating, corrosion-resistant and friction-resistant cable and a preparation method thereof, which comprises a plurality of wire bodies, a first protection mechanism arranged outside the plurality of wire bodies, an inner filling layer wrapped outside the outer wall of the plurality of wire bodies, an armor layer arranged outside the outer wall of the inner filling layer, an outer sheath layer arranged outside the outer wall of the armor layer, a plurality of limiting mechanisms arranged outside the outer wall of the outer sheath layer, a positioning mechanism arranged outside the outer wall of the limiting mechanisms, and a second protection mechanism arranged outside the outer wall of the limiting mechanisms. The first protection mechanism, the limiting mechanisms, the positioning mechanism and the second protection mechanism are arranged in cooperation, so that the outer wall of the wire body is provided with the first protection mechanism, the cable has the properties of insulation, corrosion resistance and friction resistance, the second protection mechanism is stably arranged outside the outer wall of the first protection mechanism, the wear of the outer wall of the first protection mechanism by soil and rock is reduced during the process of the cable being inserted into the ground, and the protection performance of the cable is not affected.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to an insulated, corrosion-resistant, and friction-resistant cable and its preparation method. Background Technology

[0002] A cable is an electrical energy or signal transmission device, usually composed of several or several groups of conductors, each group of conductors being insulated from each other. Existing cables are covered with a highly insulating outer layer, which enables the cable to have the characteristics of internal current conduction and external insulation. Cables are widely used as power transmission devices such as aviation wires, automotive wiring, high-temperature instrument cables, and oil drilling platform cables.

[0003] When cables are used to drill underground, especially in environments with oil, water, or strong corrosion, they need to be tied to the drill rod. During drilling, the cable sheath is easily scratched by soil or rocks, which can reduce the cable's insulation, corrosion resistance, and abrasion resistance, thus compromising its protective performance. Summary of the Invention

[0004] The purpose of this invention is to provide an insulated, corrosion-resistant, and friction-resistant cable and its preparation method, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an insulated, corrosion-resistant, and abrasion-resistant cable, comprising:

[0006] Multiple conductors;

[0007] A first protective mechanism is provided on the exterior of the plurality of conductors; the first protective mechanism includes:

[0008] An inner filling layer, which wraps around the outer wall of multiple conductors;

[0009] An armor layer, which is located on the outer wall of the inner filling layer;

[0010] An outer sheath layer is disposed on the outer wall of the armor layer. The outer wall of the outer sheath layer is provided with multiple limiting mechanisms and positioning mechanisms, and the outer wall of the multiple limiting mechanisms is provided with a second protective mechanism.

[0011] Preferably, the conductor body comprises:

[0012] The conductor body, which is used for power transmission in cables;

[0013] An insulating layer that wraps around the outer wall of the conductor body;

[0014] Inner sheath layer, which wraps around the outer wall of the insulation layer;

[0015] A barrier layer is wrapped around the outer wall of the inner sheath layer, and the inner filling layer fills the outer wall of the multiple barrier layers.

[0016] Preferably, the limiting mechanism includes:

[0017] The first slot is inclined downwards and is located on one side of the outer wall of the outer sheath layer;

[0018] The second slot is inclined downwards and is located on the other side of the outer wall of the outer sheath layer;

[0019] Multiple inner bevels are respectively formed at the ends of the inner walls of the first and second slots.

[0020] Preferably, the positioning mechanism includes:

[0021] Positioning strips, which fit against the outer wall of the outer sheath layer;

[0022] Multiple rubber blocks are fixed at equal intervals to the inner wall of the positioning strip;

[0023] Multiple positioning grooves are equidistantly opened on the outer wall of the outer sheath layer, and the rubber block is movably engaged with the inner cavity of the adjacent positioning groove;

[0024] Multiple screws are equidistantly inserted into the outer wall of the positioning strip, and the second protective mechanism is disposed on the outer wall of the multiple limiting mechanisms and positioning mechanisms.

[0025] Preferably, the second protective mechanism includes:

[0026] Multiple wear-resistant layers are respectively fixedly coated on the inner cavities of the first and second slots;

[0027] Multiple carrier belts are respectively secured in the inner cavities of adjacent first and second slots;

[0028] A wrapping film is used to cover the outer walls of multiple carrier belts and the outer walls of the outer sheath layer. Both sides of the wrapping film are fixedly bonded to the two sides of the outer walls of the positioning strip.

[0029] Preferably, the outer wall of the wrapping film is provided with multiple snap-fit ​​mechanisms, which are used to fix the cable to the drill rod.

[0030] Preferably, the snap-fit ​​mechanism includes:

[0031] The strip adheres to the outer wall of the wrapping membrane;

[0032] An elastic band is fixed to both ends of the inner wall of the cassette, and the cassette and the elastic band form a ring that is fitted onto the outer wall of the wrapping film;

[0033] A screw, which is fixedly inserted into one end of the cassette;

[0034] Nut, which is threaded to the outer wall of the screw;

[0035] Multiple card holes are equidistantly located at the other end of the cartridge, and the screw is slidably inserted into the inner cavity of the adjacent card holes.

[0036] This invention also provides a method for preparing an insulated, corrosion-resistant, and abrasion-resistant cable, comprising the following specific steps:

[0037] Step 1: Select materials and extrude them in layers to form a conductor;

[0038] Step 2: Multi-layer composite online extrusion molding, so that the first protective mechanism is wrapped around the outside of the conductor body;

[0039] Step 3: Online grooving and coating;

[0040] Step 4: Online labeling and line marking;

[0041] Step 5: Online wrapping and bonding;

[0042] Step Six: Connect the collar.

[0043] Preferably, in step one, the selected materials include: galvanized copper, polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape. Galvanized copper is selected as the cable core, and the polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape are wrapped around the outside of the cable core in steps and layers through an extruder to prepare the conductor body.

[0044] In step two, fluororubber is wrapped around the outside of multiple conductors using a first online extruder, aramid-rubber composite is blended and extruded using a second online extruder and wrapped around the fluororubber, and fluororubber is wrapped around the aramid-rubber composite using a third online extruder to obtain the cable body.

[0045] Preferably, in step three, the cable body obtained in step two is transported by a conveyor, and the outer wall of the cable body is grooved and perforated by an online double-blade grooving machine and a hole-making machine, and the inner wall of the groove is coated with a wear-resistant coating by a coating machine.

[0046] In step four, the outer wall of the cable body with the hole made in step three is pressed with a positioning strip, multiple carrier strips are snapped into the inner cavity of the groove made in step three, and the two ends of the carrier strips are fused to the outer wall of the positioning strip using a hot melt machine.

[0047] In step five, the wrapping film is wrapped around the outer wall of the cable body, and the carrying strip is placed in the inner cavity of the wrapping film. Adhesive is applied to both sides of the wrapping film and it is bonded and fixed to the outer wall of the positioning strip using an adhesive bonding machine.

[0048] In step six, the elastic band and the card tape are glued and fixed to the outer wall of the wrapping film using an adhesive machine, and the screws are fixed to the elastic band and the positioning strip using a nailing machine.

[0049] The technical effects and advantages of this invention are as follows:

[0050] (1) The present invention utilizes the combination of a first protective mechanism, a limiting mechanism, a positioning mechanism and a second protective mechanism to enable the outer wall of the conductor to pass through the first protective mechanism so that the cable has insulation, corrosion resistance and abrasion resistance properties. Through the limiting mechanism and the positioning mechanism, the second protective mechanism is stabilized on the outer wall of the first protective mechanism, so that the wear of the soil and rocks on the outer wall of the first protective mechanism is reduced during the underground insertion of the cable, so that the cable protection performance is not affected.

[0051] (2) The present invention utilizes the setting method of the snap-fit ​​mechanism. By setting the screw on the second protective mechanism, the snap-fit ​​mechanism is stabilized on the outer wall of the wrapping film, so that the drill rod can be stably bound, which makes it easy for the cable to stably follow the drill rod into the ground for installation and use. Attached Figure Description

[0052] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0053] Figure 2 This is a schematic diagram of the overall structure of the outer sheath of the present invention.

[0054] Figure 3 This is a top view structural diagram of the outer sheath of the present invention.

[0055] Figure 4 This is a top view diagram of the cartridge structure of the present invention.

[0056] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0057] Figure 6 This is a flowchart of the preparation method of the present invention.

[0058] In the diagram: 1. Conductor body; 11. Conductor body; 12. Insulation layer; 13. Inner sheath layer; 14. Barrier layer; 2. First protective mechanism; 21. Inner filling layer; 22. Armor layer; 23. Outer sheath layer; 3. Limiting mechanism; 31. First slot; 32. Second slot; 33. Inner chamfer; 4. Positioning mechanism; 41. Positioning strip; 42. Rubber block; 43. Positioning groove; 44. Screw; 5. Second protective mechanism; 51. Wear-resistant layer; 52. Bearing strip; 53. Wrapping film; 6. Snap-fit ​​mechanism; 61. Snap-fit ​​tape; 62. Elastic band; 63. Screw; 64. Nut; 65. Snap-fit ​​hole. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0060] Example 1

[0061] See appendix Figure 1-6 In this embodiment of the invention, an insulated, corrosion-resistant, and abrasion-resistant cable includes: multiple conductors 1, each conductor 1 comprising: a conductor body 11, an insulation layer 12, an inner sheath layer 13, and a barrier layer 14. The conductor body 11 is made of galvanized copper and is used for power transmission. The insulation layer 12 is a combination of polyimide film and EPDM rubber insulation material, and is wrapped around the outer wall of the conductor body 11. The inner sheath layer 13 is made of lead and is wrapped around the outer wall of the insulation layer 12. The barrier layer 14 is made of high-temperature resistant wrapping tape and is wrapped around the outer wall of the inner sheath layer 13, so that the conductors 1 can achieve the functions of power transmission, insulation, shielding protection, and temperature protection.

[0062] A first protective mechanism 2 is provided on the outside of multiple conductors 1. The first protective mechanism 2 includes: an inner filling layer 21, an armor layer 22, and an outer sheath layer 23. The inner filling layer 21 is made of fluororubber and has insulation, waterproof and protective properties. The armor layer 22 is made of aramid-rubber composite material and has wear resistance and protective properties. The outer sheath layer 23 is made of wear-resistant fluororubber and has wear resistance and impact resistance properties. The inner filling layer 21 wraps around the outer wall of multiple conductors 1 and fills multiple conductors 11 into a circular wire structure. The inner filling layer 21 fills the outer wall of multiple barrier layers 14. The armor layer 22 is disposed on the outer wall of the inner filling layer 21 and the outer sheath layer 23 is disposed on the outer wall of the armor layer 22, so that the armor layer 22 and the outer sheath layer 23 can pass through to increase the protective performance of multiple conductors 1.

[0063] The outer wall of the outer sheath layer 23 is provided with multiple limiting mechanisms 3 and positioning mechanisms 4. The limiting mechanism 3 includes: a first slot 31, a second slot 32 and multiple inner chamfers 33. The first slot 31 is opened at a downward angle on one side of the outer wall of the outer sheath layer 23, and the second slot 32 is opened at a downward angle on the other side of the outer wall of the outer sheath layer 23. The first slot 31 and the second slot 32 have a relatively staggered arc-shaped groove structure. Multiple inner chamfers 33 are respectively opened at the ends of the inner walls of the first slot 31 and the second slot 32. Through the inner chamfers 33, the end slots of the first slot 31 and the second slot 32 are made smoother, reducing the wear on the ends of the first slot 31 and the second slot 32.

[0064] The positioning mechanism 4 includes: a positioning strip 41, multiple rubber blocks 42, multiple positioning grooves 43, and multiple screws 44. The positioning strip 41 is attached to the outer wall of the outer sheath layer 23. The positioning strip 41 is made of wear-resistant hard rubber. Multiple rubber blocks 42 are fixed at equal intervals to the inner wall of the positioning strip 41. The rubber blocks 42 are T-shaped groove structures that cooperate with the positioning grooves 43. Multiple positioning grooves 43 are opened at equal intervals on the outer wall of the outer sheath layer 23. The rubber blocks 42 are movably engaged with the inner cavity of the adjacent positioning grooves 43. Multiple screws 44 are fixed at equal intervals and inserted through the outer wall of the positioning strip 41. Through the rubber blocks 42, the positioning strip 41 is stabilized on the outer wall of the outer sheath layer 23, so that the positioning strip 41 can fit between the outer sheath layer 23 and the drill pipe.

[0065] The outer walls of multiple limiting mechanisms 3 are provided with a second protective mechanism 5. The second protective mechanism 5 is located on the outer walls of multiple limiting mechanisms 3 and positioning mechanisms 4. The second protective mechanism 5 includes multiple wear-resistant layers 51, multiple bearing strips 52 and a wrapping film 53. The multiple wear-resistant layers 51 are respectively fixedly coated in the inner cavities of the first slot 31 and the second slot 32. The wear-resistant layers 51 are film structures of wear-resistant coating cured. The multiple bearing strips 52 are respectively clamped in the inner cavities of adjacent first slots 31 and second slots 32. The two ends of the bearing strips 52 are fixedly connected to the two sides of the outer wall of the positioning strip 41. The wrapping film 53 is a wear-resistant plastic film. The wrapping film 53 covers the outer walls of multiple bearing strips 52 and covers the outer wall of the outer sheath layer 23. Both sides of the wrapping film 53 are fixedly bonded to the two sides of the outer wall of the positioning strip 41. Through the wrapping film 53, it is convenient to protect the outer wall of the outer sheath layer 23. When the cable is drilled into the ground, the wrapping film 53 comes into contact with soil and stones and rubs against them, reducing the wear of the outer wall of the outer sheath layer 23.

[0066] The outer wall of the wrapping membrane 53 is provided with multiple clamping mechanisms 6. The clamping mechanisms 6 are used to fix the cable and the drill pipe. The clamping mechanism 6 includes: a clamping tape 61, an elastic band 62, a screw 63, a nut 64 and multiple clamping holes 65. The clamping tape 61 fits against the outer wall of the wrapping membrane 53. The elastic band 62 is fixed to both ends of the inner wall of the clamping tape 61. The screw 44 is fixedly inserted into the middle of the elastic band 62. The clamping tape 61 and the elastic band 62 form a ring that fits on the outer wall of the wrapping membrane 53. The screw 63 is fixedly inserted into one end of the clamping tape 61. The nut 64 is threaded to the outer wall of the screw 63. Multiple clamping holes 65 are equidistantly opened at the other end of the clamping tape 61. The screw 63 is slidably inserted into the inner cavity of the adjacent clamping hole 65. The clamping tape 61 is made of metal and can tightly bind the cable body to the drill pipe through the clamping tape 61.

[0067] This invention also provides a method for preparing an insulated, corrosion-resistant, and abrasion-resistant cable, comprising the following specific steps:

[0068] Step 1: Select materials and extrude them in layers to form conductor 1. The selected materials include: galvanized copper, polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape. Galvanized copper is selected as the cable core. The polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape are wrapped around the outside of the cable core in layers step by step using an extruder. The extruder is a twin-screw extruder, and the extruder temperature is set to 160-200℃ and the screw speed is set to 200-300rpm to prepare conductor 1.

[0069] Step 2: Multi-layer composite online extrusion molding, so that the first protective mechanism 2 is wrapped around the outside of the conductor body 1. Fluororubber is wrapped around the outside of multiple conductor bodies 1 through the first online extruder. The temperature of the first online extruder is set to 170-200℃ and the screw speed is set to 180-250rpm. Aramid-rubber composite material is blended and extruded through the second online extruder and wrapped around the fluororubber. The temperature of the second online extruder is set to 180-210℃ and the screw speed is set to 200-300rpm. Fluororubber is wrapped around the outside of the aramid-rubber composite material through the third online extruder. The temperature of the third online extruder is set to 180-200℃ and the screw speed is set to 180-280rpm, thus obtaining the cable body;

[0070] Step 3: Online grooving and coating. The cable body obtained in Step 2 is transported by a conveyor, and the outer wall of the cable body is grooved and perforated by an online double-blade grooving machine and a hole-making machine. A wear-resistant coating is applied to the inner wall of the groove by a coating machine.

[0071] Step 4: Online strip application and alignment. Press the positioning strip 41 onto the outer wall of the cable body with the hole made in Step 3, snap multiple carrier strips 52 into the inner cavity of the slot made in Step 3, and fuse the two ends of the carrier strips 52 to the outer wall of the positioning strip 41 using a hot melt machine.

[0072] Step 5: Online wrapping and bonding. Wrap the wrapping film 53 around the outer wall of the cable body and place the carrier strip 52 in the inner cavity of the wrapping film 53. Apply adhesive to both sides of the wrapping film 53 and bond it to the outer wall of the positioning strip 41 using an adhesive bonding machine.

[0073] Step 6: The collar is snapped in place. The elastic band 62 and the snap band 61 are glued and fixed to the outer wall of the wrapping film 53 by an adhesive machine, and the screw 44 is fixed to the elastic band 62 and the positioning strip 41 by a nailing machine.

[0074] Example 2

[0075] See appendix Figure 3In this embodiment of the invention, an insulated, corrosion-resistant, and abrasion-resistant cable includes: multiple conductors 1, each conductor 1 comprising: a conductor body 11, an insulation layer 12, an inner sheath layer 13, and a barrier layer 14. The conductor body 11 is made of galvanized copper and is used for power transmission. The insulation layer 12 is a combination of polyimide film and EPDM rubber insulation material, and is wrapped around the outer wall of the conductor body 11. The inner sheath layer 13 is made of lead and is wrapped around the outer wall of the insulation layer 12. The barrier layer 14 is made of high-temperature resistant wrapping tape and is wrapped around the outer wall of the inner sheath layer 13, so that the conductors 1 can achieve the functions of power transmission, insulation, shielding protection, and temperature protection.

[0076] Multiple conductors 1 are provided with a first protective mechanism 2 on their exterior. The first protective mechanism 2 includes an inner filling layer 21, an armor layer 22, and an outer sheath layer 23. The inner filling layer 21 is made of fluororubber and has insulation, waterproofing, and protective properties. The armor layer 22 is made of aramid-rubber composite material and has wear resistance and protective properties. The outer sheath layer 23 is made of wear-resistant fluororubber and has wear resistance and impact resistance properties. The inner filling layer 21 wraps around the outer wall of the multiple conductors 1 and fills the multiple conductors 11 into a flat wire structure, so that the cable can be in a flat wire structure and can be tightly attached to the drill rod to drill into the soil. The inner filling layer 21 fills the outer wall of the multiple barrier layers 14. The armor layer 22 is set on the outer wall of the inner filling layer 21, and the outer sheath layer 23 is set on the outer wall of the armor layer 22, so that the armor layer 22 and the outer sheath layer 23 can pass through to increase the protective performance of the multiple conductors 1.

[0077] The outer wall of the outer sheath layer 23 is provided with multiple limiting mechanisms 3 and positioning mechanisms 4. The limiting mechanism 3 includes: a first slot 31, a second slot 32 and multiple inner chamfers 33. The first slot 31 is opened at a downward angle on one side of the outer wall of the outer sheath layer 23, and the second slot 32 is opened at a downward angle on the other side of the outer wall of the outer sheath layer 23. The first slot 31 and the second slot 32 have a relatively staggered arc-shaped groove structure. Multiple inner chamfers 33 are respectively opened at the ends of the inner walls of the first slot 31 and the second slot 32. Through the inner chamfers 33, the end slots of the first slot 31 and the second slot 32 are made smoother, reducing the wear on the ends of the first slot 31 and the second slot 32.

[0078] The positioning mechanism 4 includes: a positioning strip 41, multiple rubber blocks 42, multiple positioning grooves 43, and multiple screws 44. The positioning strip 41 is attached to the outer wall of the outer sheath layer 23. The positioning strip 41 is made of wear-resistant hard rubber. Multiple rubber blocks 42 are fixed at equal intervals to the inner wall of the positioning strip 41. The rubber blocks 42 are T-shaped groove structures that cooperate with the positioning grooves 43. Multiple positioning grooves 43 are opened at equal intervals on the outer wall of the outer sheath layer 23. The rubber blocks 42 are movably engaged with the inner cavity of the adjacent positioning grooves 43. Multiple screws 44 are fixed at equal intervals and inserted through the outer wall of the positioning strip 41. Through the rubber blocks 42, the positioning strip 41 is stabilized on the outer wall of the outer sheath layer 23, so that the positioning strip 41 can fit between the outer sheath layer 23 and the drill pipe.

[0079] The outer walls of multiple limiting mechanisms 3 are provided with a second protective mechanism 5. The second protective mechanism 5 is located on the outer walls of multiple limiting mechanisms 3 and positioning mechanisms 4. The second protective mechanism 5 includes multiple wear-resistant layers 51, multiple bearing strips 52 and a wrapping film 53. The multiple wear-resistant layers 51 are respectively fixedly coated in the inner cavities of the first slot 31 and the second slot 32. The wear-resistant layers 51 are film structures of wear-resistant coating cured. The multiple bearing strips 52 are respectively clamped in the inner cavities of adjacent first slots 31 and second slots 32. The two ends of the bearing strips 52 are fixedly connected to the two sides of the outer wall of the positioning strip 41. The wrapping film 53 is a wear-resistant plastic film. The wrapping film 53 covers the outer walls of multiple bearing strips 52 and covers the outer wall of the outer sheath layer 23. Both sides of the wrapping film 53 are fixedly bonded to the two sides of the outer wall of the positioning strip 41. Through the wrapping film 53, it is convenient to protect the outer wall of the outer sheath layer 23. When the cable is drilled into the ground, the wrapping film 53 comes into contact with soil and stones and rubs against them, reducing the wear of the outer wall of the outer sheath layer 23.

[0080] The outer wall of the wrapping membrane 53 is provided with multiple clamping mechanisms 6. The clamping mechanisms 6 are used to fix the cable and the drill pipe. The clamping mechanism 6 includes: a clamping tape 61, an elastic band 62, a screw 63, a nut 64 and multiple clamping holes 65. The clamping tape 61 fits against the outer wall of the wrapping membrane 53. The elastic band 62 is fixed to both ends of the inner wall of the clamping tape 61. The screw 44 is fixedly inserted into the middle of the elastic band 62. The clamping tape 61 and the elastic band 62 form a ring that fits on the outer wall of the wrapping membrane 53. The screw 63 is fixedly inserted into one end of the clamping tape 61. The nut 64 is threaded to the outer wall of the screw 63. Multiple clamping holes 65 are equidistantly opened at the other end of the clamping tape 61. The screw 63 is slidably inserted into the inner cavity of the adjacent clamping hole 65. The clamping tape 61 is made of metal and can tightly bind the cable body to the drill pipe through the clamping tape 61.

[0081] This invention also provides a method for preparing an insulated, corrosion-resistant, and abrasion-resistant cable, comprising the following specific steps:

[0082] Step 1: Select materials and extrude them in layers to form conductor 1. The selected materials include: galvanized copper, polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape. Galvanized copper is selected as the cable core. The polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape are wrapped around the outside of the cable core in layers step by step using an extruder. The extruder is a twin-screw extruder, and the extruder temperature is set to 160-200℃ and the screw speed is set to 200-300rpm to prepare conductor 1.

[0083] Step 2: Multi-layer composite online extrusion molding, so that the first protective mechanism 2 is wrapped around the outside of the conductor body 1. Fluororubber is wrapped around the outside of multiple conductor bodies 1 through the first online extruder. The temperature of the first online extruder is set to 170-200℃ and the screw speed is set to 180-250rpm. Aramid-rubber composite material is blended and extruded through the second online extruder and wrapped around the fluororubber. The temperature of the second online extruder is set to 180-210℃ and the screw speed is set to 200-300rpm. Fluororubber is wrapped around the outside of the aramid-rubber composite material through the third online extruder. The temperature of the third online extruder is set to 180-200℃ and the screw speed is set to 180-280rpm, thus obtaining the cable body;

[0084] Step 3: Online grooving and coating. The cable body obtained in Step 2 is transported by a conveyor, and the outer wall of the cable body is grooved and perforated by an online double-blade grooving machine and a hole-making machine. A wear-resistant coating is applied to the inner wall of the groove by a coating machine.

[0085] Step 4: Online strip application and alignment. Press the positioning strip 41 onto the outer wall of the cable body with the hole made in Step 3, snap multiple carrier strips 52 into the inner cavity of the slot made in Step 3, and fuse the two ends of the carrier strips 52 to the outer wall of the positioning strip 41 using a hot melt machine.

[0086] Step 5: Online wrapping and bonding. Wrap the wrapping film 53 around the outer wall of the cable body and place the carrier strip 52 in the inner cavity of the wrapping film 53. Apply adhesive to both sides of the wrapping film 53 and bond it to the outer wall of the positioning strip 41 using an adhesive bonding machine.

[0087] Step 6: The collar is snapped in place. The elastic band 62 and the snap band 61 are glued and fixed to the outer wall of the wrapping film 53 by an adhesive machine, and the screw 44 is fixed to the elastic band 62 and the positioning strip 41 by a nailing machine.

[0088] Example 3

[0089] In this embodiment of the invention, an insulated, corrosion-resistant, and abrasion-resistant cable includes: multiple conductors 1, each conductor 1 comprising: a conductor body 11, an insulation layer 12, an inner sheath layer 13, and a barrier layer 14. The conductor body 11 is made of galvanized copper and is used for power transmission. The insulation layer 12 is a combination of polyimide film and EPDM rubber insulation material, and is wrapped around the outer wall of the conductor body 11. The inner sheath layer 13 is made of lead and is wrapped around the outer wall of the insulation layer 12. The barrier layer 14 is made of high-temperature resistant wrapping tape and is wrapped around the outer wall of the inner sheath layer 13, so that the conductors 1 can achieve the functions of power transmission, insulation, shielding protection, and temperature protection.

[0090] A first protective mechanism 2 is provided on the outside of multiple conductors 1. The first protective mechanism 2 includes: an inner filling layer 21, an armor layer 22, and an outer sheath layer 23. The inner filling layer 21 is made of fluororubber and has insulation, waterproof and protective properties. The armor layer 22 is made of aramid-rubber composite material and has wear resistance and protective properties. The outer sheath layer 23 is made of wear-resistant fluororubber and has wear resistance and impact resistance properties. The inner filling layer 21 wraps around the outer wall of multiple conductors 1 and fills multiple conductors 11 into a circular wire structure. The inner filling layer 21 fills the outer wall of multiple barrier layers 14. The armor layer 22 is disposed on the outer wall of the inner filling layer 21 and the outer sheath layer 23 is disposed on the outer wall of the armor layer 22, so that the armor layer 22 and the outer sheath layer 23 can pass through to increase the protective performance of multiple conductors 1.

[0091] The outer wall of the outer sheath layer 23 is provided with multiple limiting mechanisms 3 and positioning mechanisms 4. The limiting mechanism 3 includes: a first slot 31, a second slot 32 and multiple inner chamfers 33. The first slot 31 is opened at a downward angle on one side of the outer wall of the outer sheath layer 23, and the second slot 32 is opened at a downward angle on the other side of the outer wall of the outer sheath layer 23. The first slot 31 and the second slot 32 have a relatively staggered arc-shaped groove structure. Multiple inner chamfers 33 are respectively opened at the ends of the inner walls of the first slot 31 and the second slot 32. Through the inner chamfers 33, the end slots of the first slot 31 and the second slot 32 are made smoother, reducing the wear on the ends of the first slot 31 and the second slot 32.

[0092] The positioning mechanism 4 includes: a positioning strip 41, multiple rubber blocks 42, multiple positioning grooves 43, and multiple screws 44. The positioning strip 41 is attached to the outer wall of the outer sheath layer 23. The positioning strip 41 is made of wear-resistant hard rubber. Multiple rubber blocks 42 are fixed at equal intervals to the inner wall of the positioning strip 41. The rubber blocks 42 are T-shaped groove structures that cooperate with the positioning grooves 43. Multiple positioning grooves 43 are opened at equal intervals on the outer wall of the outer sheath layer 23. The rubber blocks 42 are movably engaged with the inner cavity of the adjacent positioning grooves 43. Multiple screws 44 are fixed at equal intervals and inserted through the outer wall of the positioning strip 41. Through the rubber blocks 42, the positioning strip 41 is stabilized on the outer wall of the outer sheath layer 23, so that the positioning strip 41 can fit between the outer sheath layer 23 and the drill pipe.

[0093] The outer walls of multiple limiting mechanisms 3 are provided with a second protective mechanism 5. The second protective mechanism 5 is located on the outer walls of multiple limiting mechanisms 3 and positioning mechanisms 4. The second protective mechanism 5 includes multiple wear-resistant layers 51, multiple bearing strips 52 and a wrapping film 53. The multiple wear-resistant layers 51 are respectively fixedly coated in the inner cavities of the first slot 31 and the second slot 32. The wear-resistant layers 51 are film structures of wear-resistant coating cured. The multiple bearing strips 52 are respectively clamped in the inner cavities of adjacent first slots 31 and second slots 32. The two ends of the bearing strips 52 are fixedly connected to the two sides of the outer wall of the positioning strip 41. The wrapping film 53 is a wear-resistant plastic film. The wrapping film 53 covers the outer walls of multiple bearing strips 52 and covers the outer wall of the outer sheath layer 23. Both sides of the wrapping film 53 are fixedly bonded to the two sides of the outer wall of the positioning strip 41. Through the wrapping film 53, it is convenient to protect the outer wall of the outer sheath layer 23. When the cable is drilled into the ground, the wrapping film 53 comes into contact with soil and stones and rubs against them, reducing the wear of the outer wall of the outer sheath layer 23.

[0094] The outer wall of the wrapping membrane 53 is provided with multiple clamping mechanisms 6. The clamping mechanisms 6 are used to fix the cable and the drill pipe. The clamping mechanism 6 includes: a clamping tape 61, an elastic band 62, a screw 63, a nut 64 and multiple clamping holes 65. The clamping tape 61 fits against the outer wall of the wrapping membrane 53. The elastic band 62 is fixed to both ends of the inner wall of the clamping tape 61. The screw 44 is fixedly inserted into the middle of the elastic band 62. The clamping tape 61 and the elastic band 62 form a ring that fits on the outer wall of the wrapping membrane 53. The screw 63 is fixedly inserted into one end of the clamping tape 61. The nut 64 is threaded to the outer wall of the screw 63. Multiple clamping holes 65 are equidistantly opened at the other end of the clamping tape 61. The screw 63 is slidably inserted into the inner cavity of the adjacent clamping hole 65. The clamping tape 61 is made of metal and can tightly bind the cable body to the drill pipe through the clamping tape 61.

[0095] This invention also provides a method for preparing an insulated, corrosion-resistant, and abrasion-resistant cable, comprising the following specific steps:

[0096] Step 1: Select materials and extrude them in layers to form conductor 1. The selected materials include: galvanized copper, polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape. Galvanized copper is selected as the cable core. The polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape are wrapped around the outside of the cable core in layers step by step using an extruder. The extruder is a twin-screw extruder, and the extruder temperature is set to 150-180℃ and the screw speed is set to 280-350rpm to prepare conductor 1.

[0097] Step 2: Multi-layer composite online extrusion molding, so that the first protective mechanism 2 is wrapped around the outside of the conductor body 1. Fluororubber is wrapped around the outside of multiple conductor bodies 1 through the first online extruder. The temperature of the first online extruder is set to 180-220℃ and the screw speed is set to 180-220rpm. Aramid-rubber composite material is blended and extruded through the second online extruder and wrapped around the fluororubber. The temperature of the second online extruder is set to 200-220℃ and the screw speed is set to 180-2800rpm. Fluororubber is wrapped around the outside of the aramid-rubber composite material through the third online extruder. The temperature of the third online extruder is set to 160-200℃ and the screw speed is set to 200-300rpm, thus obtaining the cable body.

[0098] Step 3: Online grooving and coating. The cable body obtained in Step 2 is transported by a conveyor, and the outer wall of the cable body is grooved and perforated by an online double-blade grooving machine and a hole-making machine. A wear-resistant coating is applied to the inner wall of the groove by a coating machine.

[0099] Step 4: Online strip application and alignment. Press the positioning strip 41 onto the outer wall of the cable body with the hole made in Step 3, snap multiple carrier strips 52 into the inner cavity of the slot made in Step 3, and fuse the two ends of the carrier strips 52 to the outer wall of the positioning strip 41 using a hot melt machine.

[0100] Step 5: Online wrapping and bonding. Wrap the wrapping film 53 around the outer wall of the cable body and place the carrier strip 52 in the inner cavity of the wrapping film 53. Apply adhesive to both sides of the wrapping film 53 and bond it to the outer wall of the positioning strip 41 using an adhesive bonding machine.

[0101] Step 6: The collar is snapped in place. The elastic band 62 and the snap band 61 are glued and fixed to the outer wall of the wrapping film 53 by an adhesive machine, and the screw 44 is fixed to the elastic band 62 and the positioning strip 41 by a nailing machine.

[0102] In Example 1, the prepared cable has a stable structure and possesses insulation, corrosion resistance, and abrasion resistance properties. The bearing strip 52 improves the stability of the positioning strip 41, and the wrapping film 53 can stably adhere to the outer wall of the cable body, thereby reducing the wear of the outer wall of the outer sheath layer 23 of the first protective mechanism 2 on the soil and rocks during the underground insertion process, so that the cable's protective performance is not affected.

[0103] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An insulated, corrosion-resistant, and abrasion-resistant cable, comprising: Multiple conductors (1); The feature is that a first protective mechanism (2) is provided on the outside of the plurality of conductors (1); the first protective mechanism (2) includes: An inner filling layer (21) is wrapped around the outer wall of multiple conductors (1); The armor layer (22) is disposed on the outer wall of the inner filling layer (21); An outer sheath layer (23) is disposed on the outer wall of the armor layer (22). The outer wall of the outer sheath layer (23) is provided with a plurality of limiting mechanisms (3) and positioning mechanisms (4). The outer walls of the plurality of limiting mechanisms (3) are provided with a second protective mechanism (5). The limiting mechanism (3) includes: The first slot (31) is opened at a downward angle on one side of the outer wall of the outer sheath layer (23); The second slot (32) is opened at a downward angle on the other side of the outer wall of the outer sheath layer (23); Multiple inner chamfers (33) are respectively opened at the ends of the inner walls of the first slot (31) and the second slot (32); The positioning mechanism (4) includes: Positioning strip (41), which is attached to the outer wall of the outer sheath layer (23); Multiple rubber blocks (42) are fixed at equal intervals to the inner wall of the positioning strip (41); Multiple positioning grooves (43) are equidistantly opened on the outer wall of the outer sheath layer (23), and the rubber block (42) is movably engaged with the inner cavity of the adjacent positioning groove (43); Multiple screws (44) are fixedly inserted at equal intervals into the outer wall of the positioning strip (41), and the second protective mechanism (5) is disposed on the outer wall of multiple limiting mechanisms (3) and positioning mechanisms (4); The second protective mechanism (5) includes: Multiple wear-resistant layers (51) are respectively fixedly coated on the inner cavities of the first slot (31) and the second slot (32); Multiple carrier straps (52) are respectively fitted into the inner cavities of adjacent first slots (31) and second slots (32); A wrapping film (53) is wrapped around the outer wall of multiple carrier strips (52) and covers the outer wall of the outer sheath layer (23). Both sides of the wrapping film (53) are fixedly bonded to the two sides of the outer wall of the positioning strip (41).

2. The insulated, corrosion-resistant, and abrasion-resistant cable according to claim 1, characterized in that, The conductor (1) includes: The conductor body (11) is used for cable power transmission; An insulating layer (12) is wrapped around the outer wall of the conductor body (11); The inner sheath (13) is wrapped around the outer wall of the insulating layer (12); Barrier layer (14) is wrapped around the outer wall of inner sheath layer (13), and inner filling layer (21) fills the outer wall of multiple barrier layers (14).

3. The insulated, corrosion-resistant, and abrasion-resistant cable according to claim 2, characterized in that, The outer wall of the wrapping film (53) is provided with a plurality of snap-fit ​​mechanisms (6), which are used to fix the cable to the drill rod.

4. The insulated, corrosion-resistant, and abrasion-resistant cable according to claim 3, characterized in that, The latching mechanism (6) includes: The cartridge (61) is attached to the outer wall of the wrapping film (53); The elastic band (62) is fixed to both ends of the inner wall of the card (61). The card (61) and the elastic band (62) form a ring that is sleeved on the outer wall of the wrapping film (53). The screw (44) is fixedly inserted and connected to the middle of the elastic band (62). A screw (63) is fixedly inserted into one end of a cassette (61); Nut (64), which is threaded to the outer wall of screw (63); Multiple card holes (65) are equidistantly located at the other end of the card tape (61), and the screw (63) is slidably inserted into the inner cavity of the adjacent card holes (65).

5. The method for preparing an insulated, corrosion-resistant, and friction-resistant cable according to claim 4, characterized in that, The specific usage steps are as follows: Step 1: Select materials and extrude them in layers to form a conductor; Step 2: Multi-layer composite online extrusion molding, so that the first protective mechanism is wrapped around the outside of the conductor body; Step 3: Online grooving and coating; Step 4: Online labeling and line marking; Step 5: Online wrapping and bonding; Step Six: Connect the collar; In step one, the selected materials include: galvanized copper, polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape. Galvanized copper is selected as the cable core and the polyimide film and EPDM rubber composite insulation material, lead sheath and wrapping tape are wrapped around the outside of the cable core in steps and layers through an extruder to prepare the conductor body. In step two, fluororubber is wrapped around the outside of multiple conductors using a first online extruder, aramid-rubber composite is blended and extruded using a second online extruder and wrapped around the fluororubber, and fluororubber is wrapped around the aramid-rubber composite using a third online extruder to obtain the cable body. In step three, the cable body obtained in step two is transported by a conveyor, and the outer wall of the cable body is slotted and perforated by an online double-blade grooving machine and a hole-making machine to obtain the first slot (31) and the second slot (32). Wear-resistant coating is applied to the inner wall of the first slot (31) and the second slot (32) by a coating machine. In step four, the outer wall of the cable body with the hole made in step three is pressed with a positioning strip, and multiple carrier strips are snapped into the inner cavity of the first slot (31) and the second slot (32) in step three. The two ends of the carrier strips are then fused to the outer wall of the positioning strip using a hot melt machine. In step five, the wrapping film is wrapped around the outer wall of the cable body, and the carrying strip is placed in the inner cavity of the wrapping film. Adhesive is applied to both sides of the wrapping film and it is bonded and fixed to the outer wall of the positioning strip using an adhesive bonding machine. In step six, the elastic band and the card tape are glued and fixed to the outer wall of the wrapping film using an adhesive machine, and the screws are fixed to the elastic band and the positioning strip using a nailing machine.

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