An aluminum alloy cable protection structure suitable for extreme low temperature environments

Abstract

This utility model discloses an aluminum alloy cable protection structure suitable for extreme low temperature environments, belonging to the field of cable protection technology. It includes a cable body, a protective tube on the outside of the cable body, a symmetrical drive mechanism on the outside of a fixed block that works in conjunction with a movable block and a cleaning ring, a temperature sensor inside the fixed ring that works in conjunction with the drive mechanism, and an insulation layer filling the inner wall of the protective tube. This utility model uses the temperature sensor inside the fixed ring to monitor the ambient temperature around the protective tube in real time. The cleaning ring's movement trajectory is stable, covering the entire surface of the protective tube. Sealing rings at both ends of the protective tube are secured by the fixed ring, forming a sealed structure to prevent rain and snow from seeping in from the tube opening, protecting the cable body from moisture corrosion. The insulation layer on the inner wall of the protective tube reduces heat loss from the tube. Combined with the cleaning function, this further reduces the impact of extreme low temperatures on the cable, preventing hardening of the cable insulation or abnormal signal transmission due to excessively low temperatures.

Description

Technical Field

[0001] This utility model belongs to the field of cable protection technology, specifically an aluminum alloy cable protection structure suitable for extreme low temperature environments. Background Technology

[0002] A cable is a device for transmitting electrical energy or signals, usually consisting of several or groups of conductors, and is widely used in power transmission, communication and other fields.

[0003] In practical applications, a large number of cables need to be laid in outdoor environments, such as overhead lines in cities, power transmission lines in the wild, and communication lines in mountainous areas.

[0004] Currently, most outdoor aluminum alloy cables are directly exposed to the environment. When it rains or snows, the rain and snow adhere to the outside of the cable. In extreme low-temperature environments, if this adhered rain and snow is not cleaned in time, it will quickly freeze. The formation of ice not only increases the load on the cable, but also exerts great pressure on the cable during the expansion of the ice layer, causing the cable sheath to crack. This, in turn, affects the aluminum alloy conductors inside the cable, reducing the cable's conductivity and seriously affecting the service life of the aluminum alloy cable. In addition, after the cable sheath cracks, external moisture and corrosive substances can more easily penetrate into the cable, further accelerating the cable's damage, increasing maintenance costs and safety hazards. Utility Model Content

[0005] To overcome the above-mentioned defects, this utility model provides an aluminum alloy cable protection structure suitable for extreme low temperature environments. It solves the problem that most aluminum alloy cables laid outdoors are directly exposed to the environment. When encountering rain or snow, rain and snow will adhere to the outside of the cable. In extreme low temperature environments, if these attached rain and snow are not cleaned in time, they will quickly freeze. The formation of ice not only increases the load on the cable, but also exerts great pressure on the cable during the expansion of the ice layer, causing the cable sheath to crack, which in turn affects the aluminum alloy conductors inside the cable and reduces the conductivity of the cable.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an aluminum alloy cable protection structure suitable for extreme low-temperature environments, comprising a cable body, a protective tube disposed on the outer side of the cable body, sealing rings fixedly installed at both ends of the protective tube, a fixing ring snapped onto the outer side of the sealing ring, a fixing block installed at the bottom of the fixing ring, a guide rail laid inside the fixing block, a movable block slidably connected inside the guide rail, a cleaning ring installed on the top of the movable block, the cleaning ring being located outside the protective tube, a drive mechanism symmetrically arranged on the outer side of the fixing block for use with the movable block and the cleaning ring, a temperature sensor for use with the drive mechanism disposed inside the fixing ring, and an insulation layer filling the inner wall of the protective tube.

[0007] As a further embodiment of this utility model: the driving mechanism includes a motor, the motor is fixed to the outside of the fixed block, the output end of the motor is coaxially fixedly connected to a rotating shaft, the rotating shaft is located inside the fixed block and rotatably connected to the fixed block, a connecting wire is wound around the outside of the rotating shaft, the connecting wire passes through the movable block and is fixedly connected to the movable block.

[0008] As a further embodiment of this utility model: the top of the fixed block is provided with a slot for use with the movable block, and the slot is provided with protrusions in a symmetrical structure, and the outer side of the movable block is provided with a sliding groove for use with the protrusions.

[0009] As a further embodiment of this utility model: a protective shell is fixedly installed on the outside of the fixing block, the motor is located inside the protective shell, and the protective shell is filled with thermal insulation cotton.

[0010] As a further embodiment of this utility model: the sealing ring is made of rubber material, a sponge is provided inside the cleaning ring, and the inner wall of the cleaning ring is in contact with the outer wall of the protective tube.

[0011] As a further embodiment of this utility model: the temperature sensor and the motor are electrically connected by a control system and a drive system, and the outer sides of the protective tube and the fixing block are coated with waterproof paint.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The temperature sensor inside the fixed ring monitors the ambient temperature around the protective tube in real time. When rain or snow occurs, the surface of the protective tube will experience abnormal temperatures due to contact with rain or snow. After the temperature sensor detects this change, it transmits the signal to the control system of the drive mechanism. Upon receiving the abnormal signal from the temperature sensor, the control system activates the drive mechanism. The drive mechanism pushes the movable block to slide along the axial direction of the protective tube via the guide rail. The movable block drives the top cleaning ring to move synchronously. The cleaning ring is in close contact with the outer wall of the protective tube. During the sliding process, it can scrape or sweep off the attached rain or snow layer, preventing rain or snow from accumulating and freezing. Because the guide rail at the bottom of the fixed block provides sliding support, the movement trajectory of the cleaning ring is stable and covers the entire surface of the protective tube. The sealing rings at both ends of the protective tube are fixed by the fixed ring to form a sealed structure, preventing rain or snow from seeping in from the tube opening and protecting the cable body from moisture corrosion. The insulation layer on the inner wall of the protective tube can reduce heat loss inside the tube. Combined with the cleaning function, it further reduces the impact of extreme low temperatures on the cable and avoids hardening of the cable insulation layer or abnormal signal transmission due to excessively low temperatures.

[0014] 2. The motor is directly fixed to the outside of the fixed block and transmits power through the coaxial shaft. The connecting line (such as steel wire rope or high-strength fiber thread) is wound around the outside of the shaft. The movable block is driven to slide by the "wind-up and unwind" principle. It is especially suitable for scenarios with small diameter protective pipes. The symmetrical protrusions in the slot cooperate with the sliding groove of the movable block to limit the radial sway of the movable block and ensure that the cleaning ring always slides perpendicular to the axis of the protective pipe. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a schematic diagram of the disassembled structure of this utility model.

[0017] Figure 3 This is a first-view view showing a partial cross-sectional view of the present invention.

[0018] Figure 4 This is a second-view view showing a partial cross-sectional view of the present invention.

[0019] Figure 5 For the present utility model Figure 4 Enlarged view of a portion of point A in the middle.

[0020] In the diagram: 1. Cable body; 2. Fixing block; 3. Protective tube; 4. Fixing ring; 5. Cleaning ring; 6. Protective shell; 7. Groove; 8. Motor; 9. Sealing ring; 10. Guide rail; 11. Rotating shaft; 12. Connecting wire; 13. Movable block; 14. Slide groove; 15. Insulation layer. Detailed Implementation

[0021] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0022] like Figures 1-5 As shown, this utility model provides a technical solution:

[0023] An aluminum alloy cable protection structure suitable for extreme low temperature environments includes a cable body 1, a protective tube 3 on the outside of the cable body 1, sealing rings 9 fixedly installed at both ends of the protective tube 3, a fixing ring 4 snapped on the outside of the sealing ring 9, a fixing block 2 installed at the bottom of the fixing ring 4, a guide rail 10 laid inside the fixing block 2, a movable block 13 slidably connected inside the guide rail 10, a cleaning ring 5 installed on the top of the movable block 13, the cleaning ring 5 located outside the protective tube 3, a drive mechanism for cooperating with the movable block 13 and the cleaning ring 5 symmetrically arranged on the outside of the fixing block 2, a temperature sensor for cooperating with the drive mechanism installed inside the fixing ring 4, and an insulation layer 15 filled on the inner wall of the protective tube 3.

[0024] Specifically, the temperature sensor inside the fixed ring 4 monitors the ambient temperature around the protective tube 3 in real time. When rain or snow occurs, the surface of the protective tube 3 will experience abnormal temperatures due to contact with rain or snow. After the temperature sensor detects this change, it transmits the signal to the control system of the drive mechanism. Upon receiving the abnormal signal from the temperature sensor, the control system activates the drive mechanism. The drive mechanism pushes the movable block 13 to slide axially along the protective tube 3 via the guide rail 10. The movable block 13 drives the top cleaning ring 5 to move synchronously. The cleaning ring 5 is in close contact with the outer wall of the protective tube 3. During the sliding process, it can remove the attached... The cleaning ring 5 removes or sweeps away the rain and snow layer to prevent it from accumulating and freezing. The guide rail 10 at the bottom of the fixed block 2 provides sliding support, and the movement trajectory of the cleaning ring 5 is stable, covering the entire surface of the protective tube 3. The sealing rings 9 at both ends of the protective tube 3 are fixed by the fixing ring 4 to form a sealed structure, preventing rain and snow from seeping in from the tube opening and protecting the cable body 1 from moisture corrosion. The heat insulation layer 15 on the inner wall of the protective tube 3 can reduce heat loss inside the tube. Combined with the cleaning function, it further reduces the impact of extreme low temperature on the cable and avoids hardening of the cable insulation layer or abnormal signal transmission due to excessively low temperature.

[0025] The drive mechanism includes a motor 8, which is fixed to the outside of the fixed block 2. The output end of the motor 8 is coaxially fixedly connected to a rotating shaft 11, which is located inside the fixed block 2 and rotatably connected to the fixed block 2. A connecting wire 12 is wound around the outside of the rotating shaft 11, which passes through the movable block 13 and is fixedly connected to the movable block 13. The top of the fixed block 2 is provided with a slot 7 for use with the movable block 13, and protrusions are arranged in a symmetrical structure in the slot 7. The outside of the movable block 13 is provided with a sliding groove 14 for use with the protrusions.

[0026] Specifically, the motor 8 is directly fixed to the outside of the fixed block 2 and transmits power through the coaxial rotating shaft 11, causing the connecting line 12 (such as steel wire rope or high-strength fiber thread) to be wound around the outside of the rotating shaft 11. The movable block 13 is driven to slide by the "wind-up and unwind" principle, which is especially suitable for scenarios where the diameter of the protective tube 3 is small. The symmetrical protrusions in the slot 7 cooperate with the sliding groove 14 of the movable block 13 to limit the radial sway of the movable block 13 and ensure that the cleaning ring 5 always slides perpendicular to the axis of the protective tube 3.

[0027] A protective shell 6 is fixedly installed on the outside of the fixed block 2. The motor 8 is located inside the protective shell 6, and the protective shell 6 is filled with heat insulation cotton. The sealing ring 9 is made of rubber material. The cleaning ring 5 is filled with sponge, and the inner wall of the cleaning ring 5 is in contact with the outer wall of the protective tube 3. The temperature sensor and the motor 8 are electrically connected to the control system and the drive system. The protective tube 3 and the outside of the fixed block 2 are both coated with waterproof coating.

[0028] Specifically, the protective shell 6 completely encloses the motor 8, and together with the internal insulation cotton, it enables the motor 8 to operate in low-temperature environments, extending the life of the motor 8. The sponge layer (such as high-density polyurethane sponge) inside the cleaning ring 5 is in flexible contact with the outer wall of the protective tube 3, avoiding damage to the surface coating (such as waterproof coating) of the protective tube 3 by hard friction while scraping away rain and snow. It is especially suitable for the maintenance of plastic protective tubes 3. The porous structure of the sponge can absorb residual water stains or thin ice layers on the surface of the protective tube 3. The protective tube 3 and the outer side of the fixing block 2 are coated with acrylic waterproof coating to form a continuous waterproof membrane that can withstand the impact of heavy rain and long-term immersion in rainwater.

[0029] The working principle of this utility model is as follows:

[0030] First, the temperature sensor inside the fixed ring 4 monitors the ambient temperature around the protective tube 3 in real time. When rain or snow occurs and the surface of the protective tube 3 experiences abnormal temperature due to contact with rain or snow, the temperature sensor captures the signal and transmits it to the control system of the drive mechanism.

[0031] Secondly, after receiving an abnormal signal, the control system starts the drive mechanism. The motor 8 drives the rotating shaft 11 to rotate. By winding or releasing the connecting line 12, the movable block 13 is pulled to slide along the guide rail 10. The movable block 13 then drives the cleaning ring 5 to move on the outer wall of the protective tube 3, scraping or sweeping off the attached rain and snow to prevent the rain and snow from accumulating and freezing. At the same time, the protrusion in the slot 7 at the top of the fixed block 2 cooperates with the sliding groove 14 on the outside of the movable block 13 to ensure the stability of the movement trajectory of the cleaning ring 5.

[0032] It is worth mentioning that the protective shell 6 encloses the motor 8 and is filled with thermal insulation cotton to ensure that the motor 8 can work normally in low temperature environment; the sponge layer inside the cleaning ring 5 is in flexible contact with the protective tube 3, which can effectively clean and avoid damaging the surface of the protective tube 3; the waterproof coating on the outside of the protective tube 3 and the fixing block 2, as well as the rubber sealing rings 9 that are fastened by the fixing rings 4 at both ends of the protective tube 3, together form a waterproof system to prevent rain and snow from entering.

[0033] Finally, the insulation layer 15 on the inner wall of the protective tube 3 reduces heat loss inside the tube. Combined with the above-mentioned cleaning and protection functions, it reduces the impact of extreme low temperatures on the cable, avoids hardening of the cable insulation layer or abnormal signal transmission, and ensures stable operation of the cable in harsh environments.

[0034] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An aluminum alloy cable protection structure suitable for extreme low temperature environments, comprising a cable body (1), characterized in that: The cable body (1) is provided with a protective tube (3) on the outside. Sealing rings (9) are fixedly installed at both ends of the protective tube (3). A fixing ring (4) is snapped on the outside of the sealing ring (9). A fixing block (2) is installed at the bottom of the fixing ring (4). A guide rail (10) is laid inside the fixing block (2). A movable block (13) is slidably connected inside the guide rail (10). A cleaning ring (5) is installed on the top of the movable block (13). The cleaning ring (5) is located outside the protective tube (3). A drive mechanism is provided on the outside of the fixing block (2) in a symmetrical structure to cooperate with the movable block (13) and the cleaning ring (5). A temperature sensor is provided inside the fixing ring (4) to cooperate with the drive mechanism. The inner wall of the protective tube (3) is filled with a heat insulation layer (15).

2. The aluminum alloy cable protection structure suitable for extreme low temperature environments according to claim 1, characterized in that: The driving mechanism includes a motor (8), which is fixed to the outside of the fixed block (2). The output end of the motor (8) is coaxially fixedly connected to a rotating shaft (11). The rotating shaft (11) is located inside the fixed block (2) and is rotatably connected to the fixed block (2). A connecting line (12) is wound around the outside of the rotating shaft (11). The connecting line (12) passes through the movable block (13) and is fixedly connected to the movable block (13).

3. The aluminum alloy cable protection structure suitable for extreme low temperature environments according to claim 2, characterized in that: The fixed block (2) has a slot (7) on its top for use with the movable block (13), and the slot (7) has protrusions arranged in a symmetrical structure. The movable block (13) has a sliding groove (14) on its outer side for use with the protrusions.

4. The aluminum alloy cable protection structure suitable for extreme low temperature environments according to claim 3, characterized in that: A protective shell (6) is fixedly installed on the outside of the fixing block (2), the motor (8) is located inside the protective shell (6), and the protective shell (6) is filled with thermal insulation cotton.

5. The aluminum alloy cable protection structure suitable for extreme low temperature environments according to claim 4, characterized in that: The sealing ring (9) is made of rubber material, the cleaning ring (5) is provided with a sponge, and the inner wall of the cleaning ring (5) is in contact with the outer wall of the protective tube (3).

6. The aluminum alloy cable protection structure suitable for extreme low temperature environments according to claim 5, characterized in that: The temperature sensor is electrically connected to the motor (8) via a control system and a drive system. The outer sides of the protective tube (3) and the fixing block (2) are coated with waterproof paint.

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