Optical cable creep deformation pretreatment device

Abstract

The invention relates to the technical field of optical cable production and processing, in particular to an optical cable creep pretreatment device which comprises a fixed tensioning wheel and a movable tensioning wheel, an optical cable is wound around the fixed tensioning wheel and the movable tensioning wheel in sequence, and the movable tensioning wheel stretches the optical cable by being close to or away from the fixed tensioning wheel. Through the S-shaped winding design of the fixed tensioning wheel and the movable tensioning wheel and multi-sensor linkage control, accurate adjustment of tension is achieved, the creep quantity of an optical cable processed by the device in 10 years is not larger than 50% of that of an unprocessed optical cable, and the low creep property is remarkably improved. After the optical cable is laid, the line spacing or the line pair distance is stable and small in variation, so that the problem of additional sag caused by creep deformation is effectively avoided, and potential safety hazards of a power transmission line are reduced; the sag stability between different spans is good, an additional adjusting plate is not needed for adjustment, the line erection process is simplified, and the construction efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of optical cable production and processing technology, and in particular to an optical cable creep pretreatment device. Background Technology

[0002] OPGW optical cable, a special type of optical cable combining optical fiber and overhead ground wire, combines overhead ground wire protection with optical fiber communication capabilities and has been widely used in transmission lines of various voltage levels. my country has a vast territory with significant differences in the span and elevation of its transmission lines, making it challenging to control the spacing between the ground wire and the conductor.

[0003] In existing technologies, creep treatment for overhead optical cables typically employs methods such as cooling or equivalent reduction of cable length. These methods are crude and lack precision in creep control, making it difficult to meet the creep performance requirements of complex transmission lines. After cable laying, the additional sag caused by creep can lead to fluctuations in cable spacing and instability in sag between different spans. This not only increases the difficulty of adjustments during line installation but also poses serious safety hazards, affecting the long-term stable operation of transmission lines.

[0004] Therefore, there is an urgent need for a device that can precisely control the creep of optical cables and achieve continuous pretreatment in order to reduce the creep difference after the optical cables are laid and ensure the safety of power transmission lines. Summary of the Invention

[0005] This application provides an optical cable creep pretreatment device to solve the problem in the prior art that the additional sag caused by creep after optical cable laying leads to fluctuations in the cable spacing and instability of sag between different spans.

[0006] This application provides an optical cable creep pretreatment device, including a fixed tensioning wheel and a movable tensioning wheel. The optical cable passes sequentially over the fixed tensioning wheel and the movable tensioning wheel. The movable tensioning wheel stretches the optical cable by moving closer to or away from the fixed tensioning wheel.

[0007] In one possible design, the fixed tensioning wheel includes a first fixed wheel and a second fixed wheel, and the movable tensioning wheel is located between the first fixed wheel and the second fixed wheel. The optical cable passes sequentially from the upper end of the first fixed wheel, the lower end of the movable tensioning wheel, and the upper end of the second fixed wheel. The movable tensioning wheel stretches the optical cable by moving in a direction perpendicular to the line connecting the first fixed wheel and the second fixed wheel.

[0008] One possible design also includes: Hydraulic pump station; A hydraulic circuit, one end of which is connected to the hydraulic pump station; A hydraulic cylinder, which is connected to the other end of the hydraulic oil circuit. The end of the hydraulic cylinder is connected to the axle of the movable tension pulley, and is used to drive the movable tension pulley to move in a direction perpendicular to the line connecting the first fixed pulley and the second fixed pulley.

[0009] In a possible design, it further includes a guide rail, which extends in a direction perpendicular to the line connecting the first fixed pulley and the second fixed pulley. The movable tension pulley is in sliding fit with the guide rail.

[0010] In a possible design, a first pressure sensor is arranged on the wheel surface of the first fixed pulley, a second pressure sensor is arranged on the wheel surface of the second fixed pulley, and a displacement sensor is arranged at the axle end of the movable tension pulley.

[0011] In a possible design, the actual tension value T of the optical cable = (T1 + T2) / 2 - K×S, where T1 is the initial tension value collected by the first pressure sensor, T2 is the end tension value collected by the second pressure sensor, S is the displacement amount collected by the displacement sensor, K is the displacement correction coefficient, and T0 is the target tension value of the optical cable; [[ID=IO]] When T < T0, the hydraulic pump station increases the output pressure, and the movable tension pulley moves downward, increasing the winding angle of the optical cable and raising the tension; When T > T0, the hydraulic pump station reduces the output pressure, and the movable tension pulley moves upward, decreasing the winding angle of the optical cable and lowering the tension.

[0012] In a possible design, a temperature sensor and a flow regulating valve are installed on the hydraulic oil circuit, and the flow regulating valve adjusts the opening according to the temperature collected by the temperature sensor.

[0013] In a possible design, it further includes a wire take-up machine, which is used to wind the processed optical cable.

[0014] In a possible design, it further includes support guide pulleys, which are arranged at intervals along the length direction of the optical cable.

[0015] In a possible design, it further includes auxiliary traction pulleys, which are arranged at intervals along the length direction of the optical cable.

[0016] The beneficial effects of this application are as follows: The optical cable creep pretreatment device of this application realizes precise adjustment of tension through the "S" - shaped winding design of fixed tension pulleys and movable tension pulleys and multi - sensor linkage control. For the optical cable processed by this device, the creep amount in 10 years is not more than 50% of that of the unprocessed cable, significantly improving the low - creep performance.

[0017] After the optical cable is laid, the spacing between the lines or the distance between the lines is stable with little variation, effectively avoiding additional sag problems caused by creep and reducing safety hazards of transmission lines; the sag stability between different spans is good, eliminating the need for additional adjustment plates, simplifying the line erection process and improving construction efficiency.

[0018] Through sensor feedback and dynamic adjustment of the hydraulic system, it can be adapted to optical cables of different specifications and materials, and the temperature compensation function ensures that the device can work stably under different ambient temperatures; through the linkage of sensor components and hydraulic system, the tension can be automatically detected, calculated and adjusted, reducing manual intervention and improving production efficiency and pretreatment consistency. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the optical cable creep pretreatment device provided in the embodiments of this application; Figure label: 1. First fixed wheel; 2. Second fixed wheel; 3. Movable tension wheel; 4. Hydraulic pump station; 5. Hydraulic circuit; 6. Hydraulic cylinder; 7. Guide rail; 8. First pressure sensor; 9. Second pressure sensor; 10. Displacement sensor; 11. Temperature sensor; 12. Flow regulating valve; 13. Take-up device; 14. Support guide wheel; 15. Auxiliary traction wheel. Detailed Implementation

[0021] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] The following is combined Figure 1 This application describes the optical cable creep pretreatment device provided in the embodiments of this application.

[0023] The optical cable creep pretreatment device provided in this application includes a fixed tensioning wheel, a movable tensioning wheel 3, a hydraulic pump station 4, a hydraulic oil circuit 5, and a hydraulic cylinder 6. The components work together to complete the creep pretreatment of the optical cable.

[0024] The fixed tensioning rollers include a first fixed roller 1 and a second fixed roller 2, which are fixedly arranged at intervals along the horizontal direction, with their axes parallel and perpendicular to the direction of optical cable transmission. The movable tensioning roller 3 is located between the first fixed roller 1 and the second fixed roller 2. The optical cable passes sequentially from the upper end of the first fixed roller 1, the lower end of the movable tensioning roller 3, and the upper end of the second fixed roller 2, forming an "S"-shaped winding trajectory. The tension is adjusted by changing the winding angle of the optical cable.

[0025] The movable tensioning wheel 3 can move along a direction perpendicular to the line connecting the first fixed wheel 1 and the second fixed wheel 2. By moving closer to or further away from the fixed tensioning wheel, the tension of the optical cable can be changed, thereby precisely controlling the tension on the optical cable and achieving the effect of creep pretreatment.

[0026] The drive mechanism includes a hydraulic pump station 4, a hydraulic circuit 5, and a hydraulic cylinder 6. The hydraulic pump station 4 consists of an oil reservoir, an oil pump, hydraulic oil pipelines, and an automatic oil pressure detection and feedback system, providing stable power for tension adjustment. One end of the hydraulic circuit 5 is connected to the hydraulic pump station 4, and the other end is connected to the hydraulic cylinder 6, used to transmit hydraulic oil. The end of the hydraulic cylinder 6 is fixedly connected to the axle of the movable tension wheel 3, which can drive the movable tension wheel 3 to move in a preset direction to achieve dynamic tension adjustment.

[0027] The guide rail 7 extends along a direction perpendicular to the line connecting the first fixed wheel 1 and the second fixed wheel 2. The axle of the movable tension wheel 3 slides in conjunction with the guide rail 7. The guide rail 7 limits the movement trajectory of the movable tension wheel 3, ensuring that the movable tension wheel 3 moves smoothly, avoiding deviation that causes tension fluctuations, and ensuring pre-processing accuracy.

[0028] The sensor assembly includes a first pressure sensor 8, a second pressure sensor 9, and a displacement sensor 10. The first pressure sensor 8 is disposed on the wheel surface of the first fixed wheel 1 and is used to collect the initial tension value T1 when the optical cable enters the tension adjustment area; the second pressure sensor 9 is disposed on the wheel surface of the second fixed wheel 2 and is used to collect the end tension value T2 when the optical cable leaves the tension adjustment area; the displacement sensor 10 is disposed on the axle end of the movable tension wheel 3 and is used to collect the displacement S of the movable tension wheel 3.

[0029] By collecting multi-dimensional data from sensor components and combining it with a preset algorithm, the actual tension value of the optical cable is calculated, providing a precise basis for tension adjustment.

[0030] The take-up machine 13 uses a conventional active gantry take-up frame for cables to wind the optical cable after creep pretreatment, ensuring that the optical cable is wound neatly. The support guide wheels 14 are spaced along the length of the optical cable to support and guide the optical cable, preventing deviation and wear during the optical cable transportation process. The auxiliary traction wheels 15 are also spaced along the length of the optical cable, working in conjunction with the take-up machine 13 to provide stable traction for the optical cable transportation, ensuring that the optical cable passes through the pretreatment area at a uniform speed.

[0031] A temperature sensor 11 and a flow regulating valve 12 are installed on the hydraulic oil circuit 5. The temperature sensor 11 collects the temperature data of the hydraulic oil in real time, and the flow regulating valve 12 automatically adjusts the opening degree according to the temperature data. When the temperature of the hydraulic oil is too low, resulting in an increase in viscosity, the flow regulating valve 12 increases the opening degree to ensure the supply rate of the hydraulic oil; when the temperature is too high, the opening degree is appropriately reduced to maintain the stability of the hydraulic system pressure and avoid the influence of temperature change on the tension regulation accuracy.

[0032] The working principle of the optical cable creep pretreatment device of the present application: Start the device, and preset the target tension value T0 and the displacement correction coefficient K in the control system according to the specifications (cross-sectional dimensions, materials) of the optical cable to be processed; The optical cable is conveyed to the pretreatment area through the auxiliary traction wheel 15, and sequentially bypasses the upper end of the first fixed wheel 1, the lower end of the movable tensioning wheel 3, and the upper end of the second fixed wheel 2 to form a stable winding trajectory; The first pressure sensor 8 obtains the initial tension value T1, the second pressure sensor 9 obtains the end tension value T2, and the displacement sensor 10 obtains the displacement amount S of the movable tensioning wheel 3; The system calculates the actual tension value T of the optical cable according to the preset algorithm. The calculation formula is: T = (T1 + T2) / 2 - K×S, where K is the displacement correction coefficient (preset according to the optical cable specifications); Compare the actual tension value T with the preset target tension value T0: When T < T0, the oil pressure pump station 4 increases the output pressure, the piston rod of the hydraulic cylinder 6 extends, and the hydraulic cylinder 6 drives the movable tensioning wheel 3 to move downward, increasing the winding angle of the optical cable, thereby increasing the optical cable tension until the difference between T and T0 meets the preset accuracy; When T > T0, the oil pressure pump station 4 reduces the output pressure, the piston rod contracts, and the hydraulic cylinder 6 drives the movable tensioning wheel 3 to move upward, reducing the winding angle of the optical cable and reducing the optical cable tension until the difference between T and T0 ≤ ±0.1 MPa; The temperature sensor 11 on the hydraulic oil circuit 5 monitors the oil temperature in real time. When the temperature is lower than 0°C or higher than 40°C, the flow regulating valve 12 automatically adjusts the opening degree according to the oil temperature to compensate for the influence of temperature on the hydraulic system and ensure stable tension regulation; The optical cable with precisely adjusted tension completes the creep pretreatment during the uniform conveying process, and is finally regularly wound by the take-up machine 13 and waits for subsequent laying and use.

[0033] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0037] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A fiber optic cable creep pretreatment device, characterized in that, It includes a fixed tensioning wheel and a movable tensioning wheel. The optical cable bypasses the fixed tensioning wheel and the movable tensioning wheel in sequence, and the movable tensioning wheel stretches the optical cable by approaching or moving away from the fixed tensioning wheel.

2. The optical cable creep pretreatment device according to claim 1, characterized in that, The fixed tensioning wheel includes a first fixed wheel and a second fixed wheel. The movable tensioning wheel is located between the first fixed wheel and the second fixed wheel. The optical cable bypasses the upper end of the first fixed wheel, the lower end of the movable tensioning wheel, and the upper end of the second fixed wheel in sequence. The movable tensioning wheel stretches the optical cable by moving in a direction perpendicular to the connection line between the first fixed wheel and the second fixed wheel.

3. The optical cable creep pretreatment device according to claim 2, characterized in that, It further includes: An oil pressure pumping station; A hydraulic oil circuit, one end of which is connected to the oil pressure pumping station; A hydraulic cylinder, which is connected to the other end of the hydraulic oil circuit. The end of the hydraulic cylinder is connected to the axle of the movable tensioning wheel and is used to drive the movable tensioning wheel to move in a direction perpendicular to the connection line between the first fixed wheel and the second fixed wheel.

4. The optical cable creep pretreatment device according to claim 3, characterized in that, It further includes a guide rail, which extends in a direction perpendicular to the connection line between the first fixed wheel and the second fixed wheel. The movable tensioning wheel is in sliding fit with the guide rail.

5. The optical cable creep pretreatment device according to any one of claims 2-4, characterized in that, A first pressure sensor is arranged on the wheel surface of the first fixed wheel, a second pressure sensor is arranged on the wheel surface of the second fixed wheel, and a displacement sensor is arranged at the axle end of the movable tensioning wheel.

6. The optical cable creep pretreatment device according to claim 5, characterized in that, The actual tension value T of the optical cable = (T1 + T2) / 2 - K×S, where T1 is the initial tension value collected by the first pressure sensor, T2 is the end tension value collected by the second pressure sensor, S is the displacement amount collected by the displacement sensor, K is the displacement correction coefficient, and T0 is the target tension value of the optical cable; When T < T0, the oil pressure pumping station increases the output pressure, the movable tensioning wheel moves downward, increasing the winding angle of the optical cable and raising the tension; When T > T0, the oil pressure pumping station reduces the output pressure, the movable tensioning wheel moves upward, decreasing the winding angle of the optical cable and lowering the tension.

7. The optical cable creep pretreatment device according to claim 3, characterized in that, A temperature sensor and a flow regulating valve are installed on the hydraulic oil circuit, and the flow regulating valve adjusts the opening degree according to the temperature collected by the temperature sensor.

8. The optical cable creep pretreatment device according to claim 5, characterized in that, It further includes a take-up machine, which is used to wind the processed optical cable.

9. The optical cable creep pretreatment device according to claim 5, characterized in that, It further includes support guide wheels, which are arranged at intervals along the length direction of the optical cable.

10. The optical cable creep pretreatment device according to claim 5, characterized in that, It further includes auxiliary traction wheels, which are arranged at intervals along the length direction of the optical cable.

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