High-temperature-resistant and corrosion-resistant internal detection cable for liquid

Abstract

The utility model belongs to the technical field of gas guide detection cables, and particularly relates to a high-temperature-resistant and corrosion-resistant internal detection cable, which comprises a cable core, a coating layer, a shielding layer, a waterproof layer and an outer protective layer. Wherein the cable core comprises a power line, a signal line and a gas-guide tube, the power line comprises an inner conductor and an insulating layer, and the insulating layer is extruded outside the inner conductor; the signal line comprises an inner conductor and an insulating layer, and the insulating layer is extruded outside the inner conductor; the cable core is wrapped by a wrapping layer, the wrapping layer is wrapped by a shielding layer, the shielding layer is wrapped by a waterproof layer, and the waterproof layer is wrapped by an outer protective layer. The utility model provides an in-liquid detection cable which is applied to the fields of petroleum, chemical engineering, metallurgy, ocean and the like and realizes the functions of detection, tracking, positioning and the like in a high-temperature and highly corrosive liquid environment.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas conduction detection cables, and particularly relates to a high-temperature resistant and corrosion resistant in-liquid detection cable. Background Art

[0002] With the development of science and technology, people's requirements for special liquid level measurement are increasing day by day. Ordinary gas conduction detection cables work in harsh environments of high temperature and strong corrosion for a long time. The sheath layer is easily corroded, liquid seeps into the cable core, blocking and flattening the internal gas conduits of the cable. The detection chip is damaged due to hydraulic shock, resulting in a significant reduction in the service life of the components of the detection system. Due to the infiltration of liquid from the connection end, the insulating layer has poor high-temperature resistance and waterproof performance, causing the insulation resistance to decrease rapidly. The gas conduits cannot withstand the tensile force and bending requirements during repeated dragging during detection and tracking, resulting in cracking and deformation of the gas conduits, forming blockages, and affecting the normal operation of the detection system. Summary of the Invention

[0003] In order to solve the above technical problems, the utility model provides an in-liquid detection cable applied to fields such as petroleum, chemical industry, metallurgy, and ocean, which can realize functions such as detection, tracking, and positioning in a liquid environment with high temperature and strong corrosion.

[0004] A high-temperature resistant and corrosion resistant in-liquid detection cable includes a cable core, a covering layer, a shielding layer, a waterproof layer, and an outer protective layer; wherein, the cable core includes a power line, a signal line, and a gas conduit. The power line includes an inner conductor and an insulating layer, and the insulating layer is extruded and wrapped around the outer side of the inner conductor; the signal line includes an inner conductor and an insulating layer, and the insulating layer is extruded and wrapped around the outer side of the inner conductor; the cable core is wrapped with a covering layer, the covering layer is wrapped with a shielding layer, the shielding layer is wrapped with a waterproof layer, and the waterproof layer is wrapped with an outer protective layer.

[0005] Further, the inner conductor is made of tin-plated or silver-plated copper wires stranded together.

[0006] Further, the insulating layer is a thin layer of high-electricity fluoroplastics extruded.

[0007] Further, the covering layer is made of a non-hygroscopic polyethylene film material.

[0008] Further, the shielding layer is a mixed braided structure of tin-plated copper wires and aramid filaments.

[0009] Further, the waterproof layer is made of polyethylene material.

[0010] Further, the outer protective layer is made of a modified fluorine material and extruded with a thin wall of 0.35 mm.

[0011] Advantageous Technical Effects of the Utility Model

[0012] 1. The air duct is made of high-strength modified polypropylene material, enabling the air duct to withstand higher impact strength, improving the anti-deformation ability of the pipeline, being able to withstand corrosion and pressure inside the liquid, and ensuring the safety of the cable.

[0013] 2. The materials and structural design of the signal wire and power wire take into account the sizes of multiple air ducts. Through reasonable design and arrangement, it not only ensures the overall roundness of the cable core but also greatly reduces the outer diameter of the cable core, saving a large amount of material costs.

[0014] 3. The shielding layer structure solves the problem of the decrease in bearing capacity caused by the reduction of the overall cable core. While ensuring the improvement of the cable's resistance to external signal interference, it enhances the cable's anti-repeated dragging ability and the ability to bear the self-weight of the cable.

[0015] 4. The waterproof layer is made of polyethylene material. The extremely low water absorption of polyethylene effectively avoids the intrusion of water molecules, solving the problem that the insulation resistance decreases due to excessive air pressure inside the liquid during the long-term operation of the cable.

[0016] 5. The outer protective layer is made of modified fluorine material. After being extruded with a 0.35mm thin wall, it can be closely integrated with the polyethylene waterproof layer. The surface of the cable is round and smooth, and no wrinkles are generated on the outer protective layer after repeated bending. The overall sealing performance of the cable reaches IP69. The application of modified fluoroplastics greatly improves the high-temperature resistance and corrosion resistance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the main view of the sectional structure of the present utility model;

[0018] In the figure: 1. Inner conductor; 2. Insulation layer; 3. Air duct; 4. Cladding layer; 5. Shielding layer; 6. Waterproof layer; 7. Outer protective layer. DETAILED DESCRIPTION OF THE INVENTION

[0019] The following will be described in detail the specific implementation manners, structures, features and their functions provided according to the present utility model in conjunction with the accompanying drawings and preferred embodiments. [[ID=No.]] [[ID=No.]]

[0020] A high-temperature and corrosion-resistant liquid-internal detection cable includes a cable core, a cladding layer 4, a shielding layer 5, a waterproof layer 6 and an outer protective layer 7; wherein, the cable core includes a power wire, a signal wire and an air duct. The power wire includes an inner conductor 1 and an insulation layer 2, and the inner conductor 1 is extruded and wrapped with the insulation layer 2; the signal wire includes an inner conductor 1 and an insulation layer 2, and the inner conductor 1 is extruded and wrapped with the insulation layer 2; the cable core is wrapped with a cladding layer 4, the cladding layer 4 is wrapped with a shielding layer 5, the shielding layer 5 is wrapped with a waterproof layer 6, and the waterproof layer 6 is wrapped with an outer protective layer 7.

[0021] Further, the inner conductor 1 is formed by stranding tinned or silver-plated copper wires.

[0022] Further, the insulation layer 2 is a thin layer of high-electricity fluoroplastic extruded.

[0023] Furthermore, the coating layer 4 is made of a non-hygroscopic polyethylene film material.

[0024] Furthermore, the shielding layer 5 is a mixed braided structure of tinned copper wire and aramid fiber.

[0025] Furthermore, the waterproof layer 6 is made of polyethylene material.

[0026] Furthermore, the outer sheath 7 is made of a modified fluorine material and extruded through a 0.35 mm thin wall.

[0027] Advantageous technical effects of the present utility model:

[0028] 1. The air duct is made of high-strength modified polypropylene material, enabling the air duct to withstand higher impact strength, improving the anti-deformation ability of the pipeline, being able to withstand corrosion and pressure inside the liquid, and ensuring the safety of the cable.

[0029] 2. The material and structure design of the signal wire and power wire take into account the sizes of multiple air ducts. Through reasonable design and arrangement, it not only ensures the overall roundness of the cable core but also greatly reduces the outer diameter of the cable core, saving a large amount of material costs.

[0030] 3. The shielding layer structure solves the problem of the decrease in bearing capacity caused by the reduction of the overall cable core. While ensuring the improvement of the cable's resistance to external signal interference, it enhances the cable's anti-repeated dragging ability and the ability to bear the self-weight of the cable.

[0031] 4. The waterproof layer is made of polyethylene material. The extremely low water absorption of polyethylene effectively avoids the intrusion of water molecules, solving the problem that the insulation resistance decreases due to excessive air pressure inside the liquid during the long-term operation of the cable.

[0032] 5. The outer sheath is made of a modified fluorine material and extruded through a 0.35 mm thin wall, which can be closely integrated with the polyethylene waterproof layer. The surface of the cable is round and smooth, and no wrinkles are generated on the outer sheath after repeated bending. The overall sealing performance of the cable reaches IP69. The application of the modified fluoroplastic greatly improves the high-temperature resistance and corrosion resistance of the cable.

[0033] The above has described in detail an embodiment of the present utility model, but the content described is only the preferred embodiment of the present utility model and cannot be considered as limiting the scope of implementation of the present utility model. All equivalent changes and improvements made according to the scope of application of the present utility model shall fall within the scope covered by the patent of the present utility model.

Claims

1. A high-temperature resistant and corrosion-resistant in-liquid detection cable, characterized in that: It includes a cable core, a covering layer, a shielding layer, a waterproof layer and an outer sheath; wherein, the cable core includes a power line, a signal line and an air duct, the power line includes an inner conductor and an insulating layer, and the insulating layer is extruded and wrapped outside the inner conductor; the signal line includes an inner conductor and an insulating layer, and the insulating layer is extruded and wrapped outside the inner conductor; the cable core is wrapped with a covering layer, the covering layer is wrapped with a shielding layer, the shielding layer is wrapped with a waterproof layer, and the waterproof layer is wrapped with an outer sheath.

2. The high-temperature resistant and corrosion-resistant in-liquid detection cable according to claim 1, characterized in that: The inner conductor is made of tinned or silver-plated copper wires stranded together.

3. The high-temperature resistant and corrosion-resistant in-liquid detection cable according to claim 1, characterized in that: The insulating layer is an extruded high-electricity fluoroplastic thin layer.

4. The high-temperature resistant and corrosion-resistant in-liquid detection cable according to claim 1, wherein: The covering layer is made of a non-hygroscopic polyethylene film material.

5. A high-temperature and corrosion-resistant in-liquid detection cable according to claim 1, characterized in that: The shielding layer is a mixed braided structure of tinned copper wires and aramid filaments.

6. The high-temperature and corrosion-resistant in-liquid detection cable according to claim 1, wherein: The waterproof layer is made of polyethylene material.

7. A high-temperature and corrosion-resistant in-liquid detection cable according to claim 1, characterized in that: The outer sheath is made of a modified fluorine material and is extruded with a 0.35 mm thin wall.

Images