High-temperature-resistant and low-temperature-resistant cable for oil platform and preparation equipment thereof

Abstract

The invention relates to the technical field of cables, and discloses a high-temperature-resistant and low-temperature-resistant cable for an oil platform and preparation equipment thereof.The high-temperature-resistant and low-temperature-resistant cable for the oil platform comprises a conductor layer, an insulating layer, a shielding layer and a sheath layer; the conductor layer is formed by twisting a plurality of tinned copper wires, and the surface of the conductor layer is coated with an anti-oxidation coating; the insulating layer is made of a silicone rubber-based composite material and comprises 5-10 wt% of nano aluminum oxide and 3-5 wt% of an organic silicon low-temperature toughening agent; the shielding layer (300) is any one of a tinned copper wire braid layer and an aluminum foil composite layer; and the sheath layer is made of dynamic fluidized TPV (Thermoplastic Vulcanizate). By arranging the conductor layer, the insulating layer, the shielding layer and the sheath layer, the cable can normally operate in extreme environments of oil platforms at 125 DEG C and-60 DEG C, and the high-flexibility anti-tearing performance and strength of the cable are fundamentally improved; meanwhile, the cable has excellent comprehensive properties such as cold resistance, heat resistance, chemical corrosion resistance and aging resistance.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and in particular to a high-temperature and low-temperature resistant cable for oil platforms and its manufacturing equipment. Background Technology

[0002] Cables are an indispensable infrastructure in modern power systems and communication networks. A cable is a wire product consisting of one or more mutually insulated conductors (wires) and an outer insulating sheath. It is mainly used to transmit electrical energy, signals, or realize electromagnetic energy conversion. In a broad sense, wires and cables are often collectively referred to as "cables," but in a narrow sense, cables specifically refer to insulated cables, which include complex structures such as insulated cores and sheath layers.

[0003] The cables used on oil drilling platforms are drag chain cables, which are highly flexible special cables that can move back and forth with the drag chain without being easily worn. However, existing cable materials such as PVC (-20℃ to 70℃) or ordinary XLPE (-40℃ to 90℃) cannot meet the requirements of high temperature resistance and low temperature resistance at the same time, making them unsuitable for the extreme environment of oil drilling platforms.

[0004] Therefore, the present invention provides a high-temperature and low-temperature resistant cable for oil platforms and its preparation equipment. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] This invention provides a high-temperature and low-temperature resistant cable for oil platforms, comprising: Conductor layer, insulating layer, shielding layer, and sheath layer; The conductor layer is made of multiple strands of tin-plated copper wire twisted together, and the surface of the conductor layer is coated with an anti-oxidation coating. The insulating layer is made of silicone rubber-based composite material, which includes 5-10 wt% nano-alumina and 3-5 wt% organosilicon low-temperature toughening agent. The sheath layer adopts a dynamic fluidized TPV.

[0007] By adopting the above technical solutions, the cable can operate normally in the extreme environments of oil platforms at 125℃ and -60℃, fundamentally improving the cable's high flexibility, tear resistance, and strength; at the same time, it possesses excellent comprehensive properties such as cold and heat resistance, chemical corrosion resistance, and aging resistance.

[0008] Preferably, the silicone rubber-based composite material of the insulating layer has an elongation at break of ≥200% at -60°C and a volume resistivity of ≥1×10⁻⁶ at 125°C. 14 Ω·cm.

[0009] By adopting the above technical solutions, the cable has good high temperature resistance and low temperature resistance.

[0010] Preferably, the shielding layer (300) is either a tin-plated copper wire braided layer or an aluminum foil composite layer.

[0011] By adopting the above technical solutions, the impact of electromagnetic fields on cable signal transmission can be reduced.

[0012] Preferably, the dynamic fluidized TPV in the sheath layer is composed of a mixture of EPDM and PP, with 2-5 wt% titanate coupling agent added during the mixing process.

[0013] By adopting the above technical solutions, effective protection of the internal conductors of the cable can be achieved.

[0014] On the other hand, this application also provides a device for manufacturing high-temperature and low-temperature resistant cables for oil platforms, comprising: a base, an extrusion mechanism disposed on the upper surface of the base, and a feeding mechanism disposed on the top of the extrusion mechanism.

[0015] By adopting the above technical solution, the raw material can be automatically conveyed into the extrusion mechanism through the feeding mechanism, and then extruded into an insulating layer through the extrusion mechanism.

[0016] Preferably, the extrusion mechanism includes an extrusion cylinder fixed to the upper surface of the base, and a horizontal shaft rotatably disposed on the inner wall of the extrusion cylinder, with a spiral extrusion blade fixed on the outer surface of the horizontal shaft. The extrusion mechanism also includes a drive motor disposed at the end of the extrusion cylinder for driving the horizontal shaft to rotate, and a heating chamber opened inside the extrusion cylinder, with an electric heating wire spirally disposed on the inner wall of the heating chamber.

[0017] By adopting the above technical solution, the rotation of the drive motor can drive the horizontal shaft and the spiral extrusion blade to rotate, and the raw material can be melted by the electric heating wire.

[0018] Preferably, a reduction gearbox is fixedly provided at the end of the extrusion cylinder, the output end of the drive motor extends into the interior of the reduction gearbox and is fixedly provided with a rotating shaft, a first pinion is fixedly provided at the end of the rotating shaft, a connecting shaft is rotatably provided on the inner wall of the reduction gearbox, and a first large gear meshing with the first pinion is fixedly provided at the end of the connecting shaft, the end of the horizontal shaft extends into the interior of the reduction gearbox and is fixedly provided with a second large gear, and a second pinion meshing with the second large gear is fixedly provided on the surface of the connecting shaft.

[0019] By adopting the above technical solution, the rotation of the drive motor can drive the rotating shaft to rotate, the rotation of the rotating shaft can drive the first pinion to rotate, the rotation of the first pinion can drive the first large gear and the connecting shaft to rotate at a reduced speed, the rotation of the connecting shaft can drive the second pinion to rotate, and the rotation of the second pinion can drive the second large gear and the horizontal shaft to rotate at a reduced speed, thereby achieving the purpose of the drive motor driving the horizontal shaft to rotate at a reduced speed.

[0020] Preferably, the feeding mechanism includes a feeding cylinder fixed to the upper surface of the base by two mounting rods, and a feeding pipe disposed at the bottom end of the feeding cylinder and extending into the interior of the extrusion cylinder. The feeding mechanism also includes a feeding funnel disposed on the top outer surface of the feeding cylinder and extending into the interior of the feeding cylinder. A first vertical rod extending into the interior of the feeding pipe is rotatably disposed on the inner top wall of the feeding cylinder, and a first spiral conveying blade is fixed on the surface of the first vertical rod. The top end of the first vertical rod extends to the upper surface of the feeding cylinder. A connecting rod extending to the outer surface of the gearbox is rotatably disposed on the inner top wall of the gearbox. A first bevel gear meshing with each other is fixed on the bottom end of the connecting rod and the surface of the rotating shaft. A transmission wheel is fixed on the top end of the connecting rod and the first vertical rod. A transmission belt is sleeved on the surface of the two transmission wheels.

[0021] By adopting the above technical solution, the connecting rod can be driven to rotate during the rotation of the shaft under the action of the two first bevel gears. The rotation of the connecting rod drives the first vertical rod to rotate under the action of the two transmission wheels and the transmission belt.

[0022] Preferably, a rotating disk is rotatably mounted on the inner wall of the feed cylinder. A first mounting hole is provided at the center of the upper surface of the rotating disk. The inner wall of the first mounting hole is fixedly connected to the surface of the first vertical rod. Four second mounting holes are also provided in a circumferential array on the upper surface of the rotating disk. A second vertical rod is fixedly mounted on the inner wall of the second mounting hole, and a second spiral conveying blade is fixedly mounted on the surface of the second vertical rod. An internal toothed ring is fixedly mounted on the inner wall of the feed cylinder. A toothed disc is fixedly mounted at the top of each of the four second vertical rods, and the four toothed discs mesh with the internal toothed ring. Two stirring racks are symmetrically fixed on the surface of the first vertical rod, and four scrapers are fixedly mounted in a circumferential array on the lower surface of the rotating disk. The outer surface of the scrapers is slidably connected to the inner wall of the feed cylinder.

[0023] By adopting the above technical solution, during the rotation of the first vertical rod, the rotating disk can be driven to rotate. The rotation of the rotating disk drives the second vertical rod to move in a circle around the first vertical rod. At this time, the toothed disc at the top of the second vertical rod can rotate on the inner wall of the inner toothed ring, driving the second vertical rod to rotate. This enables the first and second spiral conveying blades to rotate, lifting and tumbling the raw material in the feed cylinder. At the same time, the rotation of the first vertical rod and the rotating disk can drive the stirring frame and scraper to rotate respectively, thereby achieving the purpose of fully stirring the raw material on the inner wall of the feed cylinder, so that the raw material can be fully mixed.

[0024] Preferably, the outer surface and interior of the gearbox are provided with a lubrication assembly. The lubrication assembly includes a rectangular box fixed to the outer surface of the gearbox and a lubrication pipe on the inner wall of the gearbox. A plurality of atomizing nozzles are equidistantly arranged on the surface of the lubrication pipe. A reciprocating screw extending to the outer surface of the rectangular box is rotatably arranged on the inner side wall of the rectangular box. The end of the reciprocating screw and the surface of the connecting rod are both fixed with a second bevel gear that meshes with each other. A rectangular plate and a sealing plate are slidably arranged on the inner wall of the rectangular box. Two symmetrical top rods are fixed between the rectangular plate and the sealing plate. The surface of the rectangular plate is provided with a threaded hole that is threaded to the outer surface of the reciprocating screw. By adopting the above technical solution, the rotation of the connecting rod can drive the reciprocating screw to rotate automatically, thereby driving the sealing plate to move back and forth.

[0025] The inner bottom wall of the rectangular box is provided with an oil outlet pipe extending into the lubrication pipe, and the surface of the oil outlet pipe is provided with an oil outlet one-way valve. The inner wall of the rectangular box is provided with an oil suction pipe extending into the inner bottom wall of the gearbox, and the surface of the oil suction pipe is provided with an oil suction one-way valve. The inner wall of the gearbox is fixed with a partition mesh plate, and the inner bottom of the gearbox, located below the partition mesh plate, is filled with lubricating oil.

[0026] By adopting the above technical solution, when the sealing plate moves to the right, the lubricating oil at the bottom of the gearbox can be sucked into the rectangular box through the oil suction pipe. When the sealing plate moves to the left, the lubricating oil in the rectangular box can be transported to the lubrication pipe through the oil outlet pipe and sprayed out through the atomizing nozzle to lubricate the gears inside the gearbox.

[0027] The beneficial effects of this invention are as follows: The present invention discloses a high-temperature and low-temperature resistant cable for oil platforms and its manufacturing equipment. By setting a conductor layer, an insulation layer, a shielding layer and a sheath layer, the cable can operate normally in the extreme environments of oil platforms at 125℃ and -60℃, fundamentally improving the cable's high flexibility, tear resistance and strength; at the same time, it gives it excellent comprehensive properties such as cold and heat resistance, chemical corrosion resistance and aging resistance.

[0028] The present invention discloses a high-temperature and low-temperature resistant cable for oil platforms and its preparation equipment. By setting up an extrusion mechanism and a feeding mechanism, during the preparation of the cable insulation layer, various raw materials are first added to the feeding cylinder through a feeding funnel. The drive motor is then started, and its rotation drives a rotating shaft. The rotation of the shaft, under the action of two first bevel gears, drives a connecting rod to rotate. The rotation of the connecting rod, under the action of two transmission wheels and a transmission belt, drives a first vertical rod to rotate. The rotation of the first vertical rod drives a rotating disk to rotate, and the rotation of the rotating disk drives a second vertical rod to perform a circular motion around the first vertical rod. At this time, the geared disc at the top of the second vertical rod can rotate on the inner wall of the inner gear ring, driving the second... The vertical rod rotates, causing the first and second spiral conveyor blades to rotate, lifting and tumbling the raw material in the feed cylinder. Simultaneously, the rotation of the first vertical rod and the rotating disk drives the stirring frame and scraper to rotate, thereby achieving the purpose of fully stirring the raw material on the inner wall of the feed cylinder and ensuring thorough mixing. Once the raw material is fully mixed, the drive motor is activated to reverse, driving the first spiral conveyor blade to automatically transport the raw material into the feed pipe and into the extrusion cylinder, achieving automatic material transport. At the same time, the rotation of the drive motor drives the horizontal shaft to decelerate and rotate, thereby driving the spiral extrusion blade to transport the uniform material heated and melted by the electric heating wire to the left, achieving the purpose of automatic extrusion of the insulation layer.

[0029] The present invention discloses a high-temperature and low-temperature resistant cable for oil platforms and its manufacturing equipment. By setting a lubrication component, during the rotation of the shaft driving the connecting rod to rotate, the rotation of the connecting rod can drive the reciprocating screw to rotate under the action of two second bevel gears. The rotation of the reciprocating screw drives the rectangular plate to move back and forth, thereby driving the sealing plate to move back and forth through the push rod. When the sealing plate moves to the right, it can draw the lubricating oil at the bottom of the gearbox into the rectangular box through the oil suction pipe. When the sealing plate moves to the left, it can transport the lubricating oil in the rectangular box to the lubrication pipe through the oil outlet pipe, and spray it out through the atomizing nozzle to lubricate the gears inside the gearbox. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the cross-sectional structure of the high-temperature and low-temperature resistant cable of the present invention; Figure 2 This is a three-dimensional structural diagram of the high-temperature and low-temperature resistant cable manufacturing equipment of the present invention; Figure 3 This is the present invention. Figure 2 Rear view structural diagram; Figure 4 This is the present invention. Figure 2 Cross-sectional structural diagram; Figure 5 This is the present invention. Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is the present invention. Figure 4 Enlarged structural diagram at point B; Figure 7 This is the present invention. Figure 2 A schematic diagram of the top-down structure of the feed cylinder.

[0031] Explanation of reference numerals in the attached figures: 100. Conductor layer; 200. Insulating layer; 300. Shielding layer; 400. Sheath layer; 500, base; 600. Extrusion mechanism; 601. Extrusion cylinder; 602. Horizontal shaft; 603. Spiral extrusion blade; 604. Drive motor; 605. Electric heating wire; 606. Gearbox; 607. Rotating shaft; 608. First pinion; 609. Connecting shaft; 6010. First large gear; 6011. Second large gear; 6012. Second pinion; 700. Feeding mechanism; 701. Feeding cylinder; 702. Feeding pipe; 703. Feeding funnel; 704. First vertical rod; 705. First spiral conveyor blade; 706. Connecting rod; 707. First bevel gear; 708. Transmission wheel; 709. Transmission belt; 7010. Rotating disc; 7011. Second vertical rod; 7012. Second spiral conveyor blade; 7013. Internal gear ring; 7014. Gear disc; 7015. Mixing frame; 7016. Scraper; 800, Lubrication assembly; 801, Rectangular box; 802, Lubrication pipe; 803, Atomizing nozzle; 804, Reciprocating lead screw; 805, Second bevel gear; 806, Rectangular plate; 807, Sealing plate; 808, Push rod; 809, Oil outlet pipe; 8010, Oil suction pipe; 8011, Separating mesh plate. Detailed Implementation

[0032] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples. Example

[0033] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Please refer to the accompanying drawings. Figures 1 to 7 This application provides a high-temperature and low-temperature resistant cable for oil platforms; please refer to it carefully. Figure 1It includes: a conductor layer 100, an insulation layer 200, a shielding layer 300, and a sheath layer 400; the conductor layer 100 is made of multiple strands of tin-plated copper wire, and the surface of the conductor layer 100 is coated with an anti-oxidation coating; the insulation layer 200 is made of silicone rubber-based composite material, which includes 5-10 wt% nano-alumina and 3-5 wt% organosilicon low-temperature toughening agent; the sheath layer 400 is made of dynamic fluidized TPV.

[0034] Specifically, by setting conductor layer 100, insulation layer 200, shielding layer 300 and sheath layer 400, the cable can operate normally in the extreme environment of oil platforms at 125℃ and -60℃, fundamentally improving the cable's high flexibility, tear resistance and strength; at the same time, it gives it excellent comprehensive properties such as cold and heat resistance, chemical corrosion resistance and aging resistance.

[0035] Please refer to this carefully. Figure 1 The silicone rubber-based composite material with insulation layer 200 has an elongation at break of ≥200% at -60℃ and a volume resistivity of ≥1×10⁻⁶ at 125℃. 14 Ω·cm.

[0036] Specifically, this gives the cable good high-temperature and low-temperature resistance.

[0037] Please refer to this carefully. Figure 1 The shielding layer 300 can be either a tin-plated copper wire braided layer or an aluminum foil composite layer.

[0038] Specifically, it can reduce the impact of electromagnetic fields on cable signal transmission.

[0039] Please refer to this carefully. Figure 1 The dynamic fluidized TPV in the sheath layer 400 is composed of EPDM and PP, with 2-5 wt% titanate coupling agent added during mixing.

[0040] Specifically, it can effectively protect the internal conductors of the cable.

[0041] On the other hand, this application also provides a manufacturing apparatus for high-temperature and low-temperature resistant cables for oil platforms; please refer to it for details. Figures 2 to 7 It includes a base 500, an extrusion mechanism 600 is provided on the upper surface of the base 500, and a feeding mechanism 700 is provided on the top of the extrusion mechanism 600.

[0042] Specifically, the raw material can be automatically fed into the extrusion mechanism 600 through the feeding mechanism 700, and extruded into the insulation layer 200 through the extrusion mechanism 600.

[0043] Please refer to this carefully. Figure 4 and Figure 5The extrusion mechanism 600 includes an extrusion cylinder 601 fixed on the upper surface of the base 500, and a horizontal shaft 602 rotatably disposed on the inner wall of the extrusion cylinder 601. The outer surface of the horizontal shaft 602 is fixed with a spiral extrusion blade 603. The extrusion mechanism 600 also includes a drive motor 604 disposed at the end of the extrusion cylinder 601 for driving the horizontal shaft 602 to rotate, and a heating chamber opened inside the cylinder of the extrusion cylinder 601. The inner wall of the heating chamber is provided with an electric heating wire 605 in a spiral shape.

[0044] Specifically, the rotation of the drive motor 604 can drive the horizontal shaft 602 and the spiral extrusion blade 603 to rotate, and the raw material can be melted by the electric heating wire 605.

[0045] Please refer to this carefully. Figure 4 and Figure 5 A reduction gearbox 606 is fixedly installed at the end of the extrusion cylinder 601. The output end of the drive motor 604 extends into the interior of the reduction gearbox 606 and is fixedly installed with a rotating shaft 607. A first pinion 608 is fixedly installed at the end of the rotating shaft 607. A connecting shaft 609 is rotatably installed on the inner wall of the reduction gearbox 606. A first large gear 6010 that meshes with the first pinion 608 is fixedly installed at the end of the connecting shaft 609. A second large gear 6011 is fixedly installed at the end of the horizontal shaft 602 extending into the interior of the reduction gearbox 606. A second pinion 6012 that meshes with the second large gear 6011 is fixedly installed on the surface of the connecting shaft 609.

[0046] Specifically, the rotation of the drive motor 604 drives the rotating shaft 607 to rotate, the rotation of the rotating shaft 607 drives the first pinion 608 to rotate, the rotation of the first pinion 608 drives the first large gear 6010 and the connecting shaft 609 to rotate at a reduced speed, the rotation of the connecting shaft 609 drives the second pinion 6012 to rotate, and the rotation of the second pinion 6012 drives the second large gear 6011 and the horizontal shaft 602 to rotate at a reduced speed, thereby achieving the purpose of the drive motor 604 driving the horizontal shaft 602 to rotate at a reduced speed.

[0047] Please refer to this carefully. Figure 4 and Figure 6The feeding mechanism 700 includes a feeding cylinder 701 fixed to the upper surface of the base 500 by two mounting rods, and a feeding pipe 702 disposed at the bottom end of the feeding cylinder 701 and extending into the extrusion cylinder 601. The feeding mechanism 700 also includes a feeding funnel 703 disposed on the top outer surface of the feeding cylinder 701 and extending into the feeding cylinder 701. A first vertical rod 704 extending into the feeding pipe 702 is rotatably disposed on the inner top wall of the feeding cylinder 701, and the surface of the first vertical rod 704... A first spiral conveying blade 705 is fixedly provided on the surface. The top end of the first vertical rod 704 extends to the upper surface of the feed cylinder 701. A connecting rod 706 extending to the outer surface of the gearbox 606 is rotatably provided on the inner top wall of the gearbox 606. The bottom end of the connecting rod 706 and the surface of the rotating shaft 607 are both fixedly provided with a first bevel gear 707 that meshes with each other. The top ends of the connecting rod 706 and the first vertical rod 704 are both fixedly provided with a transmission wheel 708. A transmission belt 709 is sleeved on the surface of the two transmission wheels 708.

[0048] Specifically, during the rotation of the shaft 607, the connecting rod 706 is driven to rotate under the action of the two first bevel gears 707. The rotation of the connecting rod 706 drives the first vertical rod 704 to rotate under the action of the two transmission wheels 708 and the transmission belt 709.

[0049] Please refer to this carefully. Figure 4 and Figure 6 The inner wall of the feed cylinder 701 is rotatably provided with a rotating disk 7010. A first mounting hole is opened at the center of the upper surface of the rotating disk 7010. The inner wall of the first mounting hole is fixedly connected to the surface of the first vertical rod 704. The upper surface of the rotating disk 7010 is also provided with four second mounting holes in a circumferential array. The inner wall of the second mounting holes is fixedly provided with a second vertical rod 7011, and the surface of the second vertical rod 7011 is fixedly provided with a second spiral conveying blade 7012. The inner wall of the feed cylinder 701 is fixedly provided with an inner toothed ring 7013. The top of each of the four second vertical rods 7011 is fixedly provided with a toothed disc 7014, and the four toothed discs 7014 are all meshed with the inner toothed ring 7013. Two stirring racks 7015 are symmetrically fixedly provided on the surface of the first vertical rod 704, and four scrapers 7016 are fixedly provided in a circumferential array on the lower surface of the rotating disk 7010. The outer surface of the scrapers 7016 is slidably connected to the inner wall of the feed cylinder 701.

[0050] Specifically, during the rotation of the first vertical rod 704, it drives the rotating disk 7010 to rotate. The rotation of the rotating disk 7010 drives the second vertical rod 7011 to perform circular motion around the first vertical rod 704. At this time, the toothed disk 7014 at the top of the second vertical rod 7011 can rotate on the inner wall of the inner toothed ring 7013, driving the second vertical rod 7011 to rotate. This causes the first spiral conveying blade 705 and the second spiral conveying blade 7012 to rotate, lifting and tumbling the raw material in the feed cylinder 701. At the same time, the rotation of the first vertical rod 704 and the rotating disk 7010 can drive the stirring frame 7015 and the scraper 7016 to rotate respectively, thereby achieving the purpose of fully stirring the raw material on the inner wall of the feed cylinder 701, so that the raw material can be fully mixed.

[0051] In this invention, by setting up an extrusion mechanism 600 and a feeding mechanism 700, during the preparation of the cable insulation layer 200, various raw materials can be added into the feeding cylinder 701 through the feeding funnel 703, and the drive motor 604 is started. The rotation of the drive motor 604 drives the rotating shaft 607 to rotate. The rotation of the rotating shaft 607 drives the connecting rod 706 to rotate under the action of the two first bevel gears 707. The rotation of the connecting rod 706 drives the first vertical rod 704 to rotate under the action of the two transmission wheels 708 and the transmission belt 709. The rotation of the first vertical rod 704 drives the rotating disk 7010 to rotate. The rotation of the rotating disk 7010 drives the second vertical rod 7011 to perform circumferential motion around the first vertical rod 704. At this time, the toothed disk 7014 at the top of the second vertical rod 7011 can rotate on the inner wall of the inner toothed ring 7013, driving the second vertical rod 7011 to rotate. The rotation of 011 causes the first spiral conveyor blade 705 and the second spiral conveyor blade 7012 to rotate, lifting and tumbling the raw material in the feed cylinder 701. At the same time, the rotation of the first vertical rod 704 and the rotating disk 7010 can drive the stirring frame 7015 and the scraper 7016 to rotate respectively, thereby achieving the purpose of fully stirring the raw material on the inner wall of the feed cylinder 701, so that the raw material can be fully mixed. When the raw material is fully mixed, the drive motor 604 can be started to reverse, driving the first spiral conveyor blade 705 to automatically transport the raw material into the feed pipe 702 and into the extrusion cylinder 601, realizing the automatic conveying of the raw material. At the same time, the rotation of the drive motor 604 can drive the horizontal shaft 602 to decelerate and rotate, thereby driving the spiral extrusion blade 603 to transport the uniform material heated and melted by the electric heating wire 605 to the left, realizing the purpose of automatic extrusion of the insulation layer 200.

[0052] Please refer to this carefully. Figure 4 and Figure 5The gearbox 606 has a lubrication assembly 800 on its outer surface and inside. The lubrication assembly 800 includes a rectangular box 801 fixed on the outer surface of the gearbox 606 and a lubrication pipe 802 on the inner wall of the gearbox 606. The surface of the lubrication pipe 802 is provided with a plurality of atomizing nozzles 803 at equal intervals. The inner side wall of the rectangular box 801 is rotatably provided with a reciprocating screw 804 extending to the outer surface of the rectangular box 801. The end of the reciprocating screw 804 and the surface of the connecting rod 706 are both fixed with a second bevel gear 805 that meshes with each other. The inner wall of the rectangular box 801 is slidably provided with a rectangular plate 806 and a sealing plate 807. Two symmetrical push rods 808 are fixed between the rectangular plate 806 and the sealing plate 807. The surface of the rectangular plate 806 is provided with a threaded hole that is threaded to the outer surface of the reciprocating screw 804. Specifically, the rotation of the connecting rod 706 can drive the reciprocating screw 804 to rotate automatically, thereby driving the sealing plate 807 to move back and forth.

[0053] Please refer to this carefully. Figure 4 and Figure 5 The inner bottom wall of the rectangular box 801 is provided with an oil outlet pipe 809 extending into the lubrication pipe 802. The surface of the oil outlet pipe 809 is provided with an oil outlet one-way valve. The inner wall of the rectangular box 801 is provided with an oil suction pipe 8010 extending into the inner bottom wall of the gearbox 606. The surface of the oil suction pipe 8010 is provided with an oil suction one-way valve. The inner wall of the gearbox 606 is fixed with a partition mesh plate 8011, and the inner bottom of the gearbox 606, located below the partition mesh plate 8011, is filled with lubricating oil.

[0054] Specifically, when the sealing plate 807 moves to the right, it can draw the lubricating oil from the bottom of the gearbox 606 into the rectangular box 801 through the oil suction pipe 8010. When the sealing plate 807 moves to the left, it can transport the lubricating oil in the rectangular box 801 to the lubrication pipe 802 through the oil outlet pipe 809, and spray it out through the atomizing nozzle 803 to lubricate the gears inside the gearbox 606.

[0055] In this invention, by setting up a lubrication assembly 800, during the rotation of the rotating shaft 607 driving the connecting rod 706 to rotate, the rotation of the connecting rod 706 can drive the reciprocating screw 804 to rotate under the action of the two second bevel gears 805. The rotation of the reciprocating screw 804 drives the rectangular plate 806 to move back and forth, thereby driving the sealing plate 807 to move back and forth through the push rod 808. When the sealing plate 807 moves to the right, it can draw the lubricating oil at the bottom of the gearbox 606 into the rectangular box 801 through the oil suction pipe 8010. When the sealing plate 807 moves to the left, it can transport the lubricating oil in the rectangular box 801 to the lubrication pipe 802 through the oil outlet pipe 809, and spray it out through the atomizing nozzle 803 to lubricate the gears inside the gearbox 606.

[0056] Working principle: During the preparation of the cable insulation layer 200, various raw materials are first added into the feed cylinder 701 through the feeding funnel 703, and the drive motor 604 is started. The rotation of the drive motor 604 drives the rotating shaft 607 to rotate. The rotation of the rotating shaft 607 drives the connecting rod 706 to rotate under the action of the two first bevel gears 707. The rotation of the connecting rod 706 drives the first vertical rod 704 to rotate under the action of the two transmission wheels 708 and the transmission belt 709. The rotation of the first vertical rod 704 drives the rotating disk 7010 to rotate. The rotation of the rotating disk 7010 drives the first vertical rod 704 to rotate. The second vertical rod 7011 revolves around the first vertical rod 704 in a circular motion. During this motion, the toothed disc 7014 at the top of the second vertical rod 7011 rotates on the inner wall of the inner toothed ring 7013, causing the second vertical rod 7011 to rotate. This, in turn, causes the first spiral conveyor blade 705 and the second spiral conveyor blade 7012 to rotate, lifting and tumbling the raw material inside the feed cylinder 701. Simultaneously, the rotation of the first vertical rod 704 and the rotating disc 7010 drives the stirring frame 7015 and the scraper 7016 to rotate, thereby achieving thorough mixing of the raw material on the inner wall of the feed cylinder 701, allowing the raw material to... Sufficient mixing is achieved. Once the raw materials are fully mixed, the drive motor 604 reverses, driving the first spiral conveyor blade 705 to automatically transport the raw materials into the feed pipe 702 and into the extrusion cylinder 601, thus achieving automatic material transport. Simultaneously, the rotation of the drive motor 604 drives the horizontal shaft 602 to decelerate, thereby driving the spiral extrusion blade 603 to transport the uniform material heated and melted by the electric heating wire 605 to the left, achieving the purpose of automatic extrusion of the insulation layer 200. Furthermore, during the rotation of the rotating shaft 607, which drives the connecting rod 706 to rotate, the rotation of the connecting rod 706 can achieve automatic extrusion of the insulating layer 200. The second bevel gear 805 drives the reciprocating screw 804 to rotate. The rotation of the reciprocating screw 804 drives the rectangular plate 806 to move back and forth, which in turn drives the sealing plate 807 to move back and forth through the push rod 808. When the sealing plate 807 moves to the right, it can draw the lubricating oil at the bottom of the gearbox 606 into the rectangular box 801 through the oil suction pipe 8010. When the sealing plate 807 moves to the left, it can transport the lubricating oil in the rectangular box 801 to the lubrication pipe 802 through the oil outlet pipe 809, and spray it out through the atomizing nozzle 803 to lubricate the gears inside the gearbox 606.

[0057] The embodiments of this specific implementation have been described above. However, this embodiment is not limited to the specific implementation described above. The specific implementation described above is merely illustrative and not restrictive. Those skilled in the art can make many other forms based on the guidance of this embodiment, all of which are within the protection scope of this embodiment.

Claims

1. A high-temperature and low-temperature resistant cable for oil platforms, characterized in that, include: Conductor layer (100), insulation layer (200), shielding layer (300) and sheath layer (400); The conductor layer (100) is made of multiple strands of tin-plated copper wire, and the surface of the conductor layer (100) is coated with an anti-oxidation coating. The insulating layer (200) is made of silicone rubber-based composite material, which includes 5-10 wt% nano-alumina and 3-5 wt% organosilicon low-temperature toughening agent. The sheath layer (400) adopts a dynamic fluidized TPV.

2. The high-temperature and low-temperature resistant cable for oil platforms according to claim 1, characterized in that, The silicone rubber-based composite material of the insulating layer (200) has an elongation at break of ≥200% at -60°C and a volume resistivity of ≥1×10⁻⁶ at 125°C. 14 Ω·cm.

3. The high-temperature and low-temperature resistant cable for oil platforms according to claim 1, characterized in that, The shielding layer (300) is either a tin-plated copper wire braided layer or an aluminum foil composite layer.

4. The high-temperature and low-temperature resistant cable for oil platforms according to claim 3, characterized in that, The dynamic fluidized TPV in the sheath layer (400) is composed of a mixture of EPDM and PP, with 2-5 wt% titanate coupling agent added during the mixing process.

5. The equipment for preparing high-temperature and low-temperature resistant cables for oil platforms according to any one of claims 1-4, characterized in that, Includes a base (500), the upper surface of which is provided with an extrusion mechanism (600), and the top of the extrusion mechanism (600) is provided with a feeding mechanism (700).

6. The equipment for preparing high-temperature and low-temperature resistant cables for oil platforms according to claim 5, characterized in that, The extrusion mechanism (600) includes an extrusion cylinder (601) fixed on the upper surface of the base (500), and a horizontal shaft (602) rotatably disposed on the inner wall of the extrusion cylinder (601). The outer surface of the horizontal shaft (602) is fixed with a spiral extrusion blade (603). The extrusion mechanism (600) also includes a drive motor (604) disposed at the end of the extrusion cylinder (601) for driving the horizontal shaft (602) to rotate, and a heating chamber opened inside the cylinder of the extrusion cylinder (601). The inner wall of the heating chamber is provided with an electric heating wire (605) in a spiral shape.

7. The equipment for preparing high-temperature and low-temperature resistant cables for oil platforms according to claim 6, characterized in that, The end of the extrusion cylinder (601) is fixedly provided with a reduction gearbox (606). The output end of the drive motor (604) extends into the interior of the reduction gearbox (606) and is fixedly provided with a rotating shaft (607). The end of the rotating shaft (607) is fixedly provided with a first pinion (608). The inner wall of the reduction gearbox (606) is rotatably provided with a connecting shaft (609), and the end of the connecting shaft (609) is fixedly provided with a first large gear (6010) that meshes with the first pinion (608). The end of the horizontal shaft (602) extends into the interior of the reduction gearbox (606) and is fixedly provided with a second large gear (6011). The surface of the connecting shaft (609) is fixedly provided with a second pinion (6012) that meshes with the second large gear (6011).

8. The equipment for preparing high-temperature and low-temperature resistant cables for oil platforms according to claim 7, characterized in that, The feeding mechanism (700) includes a feeding cylinder (701) fixed to the upper surface of the base (500) by two mounting rods, and a feeding tube (702) disposed at the bottom end of the feeding cylinder (701) and extending into the extrusion cylinder (601). The feeding mechanism (700) also includes a feeding funnel (703) disposed on the top outer surface of the feeding cylinder (701) and extending into the feeding cylinder (701). A first vertical rod (704) extending into the feeding tube (702) is rotatably disposed on the inner top wall of the feeding cylinder (701), and the surface of the first vertical rod (704) is fixed with The device has a first spiral conveyor blade (705), the top end of the first vertical rod (704) extends to the upper surface of the feed cylinder (701), the inner top wall of the gearbox (606) is rotatably provided with a connecting rod (706) extending to the outer surface of the gearbox (606), the bottom end of the connecting rod (706) and the surface of the rotating shaft (607) are both fixedly provided with a first bevel gear (707) that meshes with each other, the top end of the connecting rod (706) and the top end of the first vertical rod (704) are both fixedly provided with a transmission wheel (708), and the surfaces of the two transmission wheels (708) are fitted with a transmission belt (709).

9. The equipment for preparing high-temperature and low-temperature resistant cables for oil platforms according to claim 8, characterized in that, The inner wall of the feed cylinder (701) is rotatably equipped with a rotating disk (7010). A first mounting hole is opened at the center of the upper surface of the rotating disk (7010). The inner wall of the first mounting hole is fixedly connected to the surface of the first vertical rod (704). The upper surface of the rotating disk (7010) is also provided with four second mounting holes in a circumferential array. A second vertical rod (7011) is fixedly mounted on the inner wall of the second mounting hole, and a second spiral conveying blade (7012) is fixedly mounted on the surface of the second vertical rod (7011). An internal toothed ring (7013) is fixedly provided on the inner wall of the cylinder (701), and a toothed disc (7014) is fixedly provided at the top of each of the four second vertical rods (7011), and the four toothed discs (7014) mesh with the internal toothed ring (7013). Two stirring racks (7015) are symmetrically fixedly provided on the surface of the first vertical rod (704), and four scrapers (7016) are fixedly provided in a circumferential array on the lower surface of the rotating disk (7010). The outer surface of the scraper (7016) is slidably connected to the inner wall of the feed cylinder (701).

10. The equipment for preparing high-temperature and low-temperature resistant cables for oil platforms according to claim 8, characterized in that, The gearbox (606) is provided with a lubrication assembly (800) on its outer surface and inside. The lubrication assembly (800) includes a rectangular box (801) fixed to the outer surface of the gearbox (606) and a lubrication pipe (802) on the inner wall of the gearbox (606). A plurality of atomizing nozzles (803) are equidistantly arranged on the surface of the lubrication pipe (802). A reciprocating screw (804) extending to the outer surface of the rectangular box (801) is rotatably arranged on the inner side wall of the rectangular box (801). The reciprocating screw (804) and the connecting rod (706) are both fixed with a second bevel gear (805) that meshes with each other. The inner wall of the rectangular box (801) is slidably provided with a rectangular plate (806) and a sealing plate (807). Two symmetrical push rods (808) are fixed in the middle between the rectangular plate (806) and the sealing plate (807). The surface of the rectangular plate (806) is provided with a threaded hole that is threaded to the outer surface of the reciprocating screw (804). The inner bottom wall of the rectangular box (801) is provided with an oil outlet pipe (809) extending into the lubrication pipe (802). The surface of the oil outlet pipe (809) is provided with an oil outlet one-way valve. The inner wall of the rectangular box (801) is provided with an oil suction pipe (8010) extending into the inner bottom wall of the gearbox (606). The surface of the oil suction pipe (8010) is provided with an oil suction one-way valve. The inner wall of the gearbox (606) is fixedly provided with a partition mesh plate (8011), and the inner bottom of the gearbox (606) below the partition mesh plate (8011) is filled with lubricating oil.

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