Intelligent monitoring of kink resistant flexible cables

Abstract

The present application relates to the technical field of power transmission, especially to a smart monitoring twist-resistant flexible cable, comprising a cable body. The smart monitoring twist-resistant flexible cable can test the temperature and stress inside the cable by adding a monitoring signal line, which is convenient for monitoring the state of the cable and the change of the external environment in real time, and improves the safety of the cable. An arc-shaped metal extrusion anti-twist mechanism composed of a transversely arranged assembly shaft, an arc-shaped extrusion monitoring frame, a lateral bending extrusion rod and a lateral extrusion plate is arranged in the cable, which can improve the compressive strength of the outer layer of the entire cable. The arc-shaped metal extrusion anti-twist mechanism is turned over with the external extrusion force, thereby extruding the electric control type pressure monitoring module. The extrusion force monitored by the electric control type pressure monitoring module is used to judge the change of the external environment and the deformation of the cable, which is convenient for understanding and processing the state of the cable in time.

Description

Technical Field

[0001] This invention relates to the field of power transmission technology, and in particular to intelligent monitoring torsion-resistant flexible cables. Background Technology

[0002] Due to geographical location and wind resources, offshore wind farms will gradually expand into deeper waters, with wind turbines reaching larger capacities and power transmission systems reaching higher voltage levels. However, limitations in the production of flexible high-voltage insulation materials, shielding materials, and high-cleanliness processes for high-voltage torsion-resistant cables mean that the highest voltage level of wind power cables currently on the market is only 66kV, hindering the development of ultra-high-power offshore wind turbines in China. Therefore, a 110kV high-voltage torsion-resistant cable has emerged to meet the requirements of high-power offshore wind turbines. Compared to 66kV high-voltage torsion-resistant cables, 110kV high-voltage torsion-resistant cables have higher requirements in terms of cable materials, manufacturing processes, and operation and maintenance.

[0003] Meanwhile, the high-voltage torsion-resistant cables currently on the market do not have internal reinforcement mechanisms, resulting in limited torsion resistance. Furthermore, when twisting and compression occur on their surface, they cannot be monitored in real time, making it impossible for remote monitoring terminals to understand the external environmental conditions of the cables in a timely manner, thus limiting the monitoring effect. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an improved intelligent monitoring torsion-resistant flexible cable in order to solve the problems existing in the background art. This solves the problem that the high-voltage torsion-resistant cables on the market do not have internal reinforcement mechanisms, resulting in limited torsion resistance. Moreover, when torsion and compression occur on their surface, they cannot be monitored in real time, which makes it impossible for remote monitoring terminals to understand the external environmental status of the cable in a timely manner, resulting in very limited monitoring effect.

[0005] The technical solution adopted by this invention to solve its technical problem is: an intelligent monitoring torsion-resistant flexible cable, comprising a cable body, wherein the cable body comprises, from the inside out, a central conductor, an inner wrapping tape, an inner shielding sleeve, an insulating sleeve, an outer shielding sleeve, a central wrapping tape, a metal shielding sleeve, an outer wrapping tape, and an outer sheath. Multiple arc-shaped metal extrusion anti-torsion mechanisms are provided between the outer surface of the metal shielding sleeve and the outer sheath. An inwardly protruding internal monitoring frame is provided on the inner arc-shaped surface of the outer wrapping tape. Lateral mounting openings for installing the arc-shaped metal extrusion anti-torsion mechanisms are offset on both sides of the internal monitoring frame. A monitoring signal line for transmitting signals is installed inside the internal monitoring frame. An internal mounting seat for supporting the monitoring signal line is provided on the inner surface of the internal monitoring frame. An electrically controlled pressure monitoring module and a temperature monitoring module that cooperate with the arc-shaped metal extrusion anti-torsion mechanisms are fixedly mounted inside the internal mounting seat.

[0006] The arc-shaped metal extrusion anti-torsion mechanism includes a horizontal assembly shaft that is movably inserted into the side assembly port, an arc-shaped extrusion monitoring frame that is fixedly installed on one side of the horizontal assembly shaft, a lateral bending extrusion rod that is fixedly installed on the other side of the horizontal assembly shaft, and a lateral extrusion plate that is fixed on the side wall of the lateral bending extrusion rod.

[0007] The arc-shaped compression monitoring frame has outwardly protruding horizontal monitoring arms on both sides.

[0008] The inner side of the lateral assembly port has an inner mounting seat for assembling a horizontal assembly shaft. The arc-shaped metal extrusion anti-torsion mechanism is movably connected to the internal monitoring frame by inserting the horizontal assembly shaft from the lateral assembly port into the inner mounting seat.

[0009] The internal mounting base has a lateral mounting slot with an opening on one side. The electronically controlled pressure monitoring module and temperature monitoring module are inserted into the lateral mounting slot and fixed to the internal mounting base by the lateral assembly block on the mounting surface.

[0010] The inner arc-shaped surface of the arc-shaped extrusion monitoring frame is provided with an arc-shaped extrusion groove that cooperates with the metal shielding sleeve.

[0011] The inner side of the arc-shaped extrusion groove is symmetrically provided with arc-shaped lateral receiving grooves, and the inside of the arc-shaped lateral receiving grooves has an arc-shaped reset spring at the opening position.

[0012] The outer surface of the metal shielding sleeve has an outwardly protruding external protrusion, and the arc-shaped compression monitoring frame is connected to the inner surface of the outer wrapping strap by an arc-shaped reset spring piece abutting against both sides of the external protrusion.

[0013] The electrically controlled pressure monitoring module has a bottom guide extrusion groove on the side wall near the lateral extrusion plate. The beneficial effects of this invention are:

[0014] (1) The intelligent monitoring torsion-resistant flexible cable of the present invention can test the internal temperature and stress of the cable by adding a monitoring signal line, which facilitates real-time monitoring of the cable's status and changes in the external environment, thereby improving the cable's safety.

[0015] (2) An arc-shaped metal extrusion anti-torsion mechanism consisting of a horizontal assembly shaft, an arc-shaped extrusion monitoring frame, a lateral bending extrusion rod and a lateral extrusion plate is installed inside the cable, which can improve the compressive strength of the entire outer layer of the cable.

[0016] (3) The arc-shaped metal extrusion anti-torsion mechanism flips as the external extrusion force is applied, thereby extruding the electronically controlled pressure monitoring module. The extrusion force monitored by the electronically controlled pressure monitoring module is used to judge the changes in the external environment and the deformation of the cable, so as to facilitate timely understanding and handling of the cable status.

[0017] (4) By installing monitoring signal lines and connected electronic pressure monitoring modules and temperature monitoring modules inside the internal monitoring frame, the safety and stability of the monitoring mechanism are greatly improved.

[0018] (5) By adopting a detachable structural design, the difficulty of early assembly and production costs are greatly reduced. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the arc-shaped metal extrusion anti-torsion mechanism in this invention.

[0022] Figure 3 This is a schematic diagram of the internal monitoring frame in this invention. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0024] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] Figure 1 , Figure 2 and Figure 3 The intelligent monitoring torsion-resistant flexible cable shown includes a cable body. From the inside out, the cable body includes a central conductor 1, an inner wrapping tape 2, an inner shielding sleeve 3, an insulating sleeve 4, an outer shielding sleeve 5, a central wrapping tape 6, a metal shielding sleeve 7, an outer wrapping tape 8, and an outer sheath 9. Four arc-shaped metal extrusion anti-torsion mechanisms are provided between the outer side of the metal shielding sleeve 7 and the outer sheath 9. The inner arc-shaped surface of the outer wrapping tape 8 has an inwardly protruding internal monitoring frame 10. The two sides of the internal monitoring frame 10 are staggered with lateral mounting ports 11 for installing the arc-shaped metal extrusion anti-torsion mechanisms. A monitoring signal line 12 for transmitting signals is installed inside the internal monitoring frame 10. An internal mounting seat 13 for supporting the monitoring signal line 12 is provided on the inner side of the internal monitoring frame 10. An electrically controlled pressure monitoring module 14 and a temperature monitoring module 15 that cooperate with the arc-shaped metal extrusion anti-torsion mechanisms are fixedly mounted inside the internal mounting seat 13.

[0026] The monitoring signal line 12, the electronically controlled pressure monitoring module 14, and the temperature monitoring module 15 are existing technologies. The electronically controlled pressure monitoring module 14 is used to monitor the overturning pressure of the arc-shaped extrusion anti-torsion mechanism.

[0027] Temperature monitoring module 15 is used to monitor the temperature inside the cable body;

[0028] The monitoring signal line 12 is a multimode optical fiber.

[0029] To facilitate the flip-over extrusion control, the arc-shaped metal extrusion anti-torsion mechanism includes a horizontal assembly shaft 16 that is movably inserted into the side assembly port 11, an arc-shaped extrusion monitoring frame 17 that is fixedly installed on one side of the horizontal assembly shaft 16, a lateral bending extrusion rod 18 that is fixedly installed on the other side of the horizontal assembly shaft 16, and a lateral extrusion plate 19 that is fixed on the side wall of the lateral bending extrusion rod 18.

[0030] To improve the lateral monitoring range, both sides of the arc-shaped compression monitoring frame 17 have outwardly protruding horizontal monitoring arms 20.

[0031] To facilitate loading and unloading, the inner side of the side assembly port 11 has an inner mounting seat 21 for assembling the horizontal assembly shaft 16. The arc-shaped metal extrusion anti-torsion mechanism is inserted between the inner mounting seat 21 and the horizontal assembly shaft 16 through the side assembly port 11 and is movably connected to the internal monitoring frame 10.

[0032] To facilitate loading and unloading, the internal mounting base 13 has a side-mounted slot with an opening on one side. The electronically controlled pressure monitoring module 14 and temperature monitoring module 15 are inserted into the side-mounted slot and fixed to the internal mounting base 13 by the side assembly block on the mounting surface.

[0033] To facilitate loading and unloading operations, an opening is made on the outer side of the outer strap 8, through which the arc-shaped metal extrusion anti-torsion mechanism, the electronically controlled pressure monitoring module 14, and the temperature monitoring module 15 can be assembled.

[0034] To facilitate flipping and storage, an arc-shaped extrusion groove 23 is provided on the inner arc-shaped surface of the arc-shaped extrusion monitoring frame 17 to cooperate with the metal shielding sleeve 7.

[0035] To facilitate lateral contraction and reset, symmetrical arc-shaped lateral receiving grooves are provided on the inner side of the arc-shaped extrusion groove 23, and an arc-shaped reset spring piece 24 is located at the opening position inside the arc-shaped lateral receiving groove.

[0036] To accommodate the inner compression and support, the outer surface of the metal shielding sleeve 7 has an outwardly protruding external protrusion 25. The arc-shaped compression monitoring frame 17 is connected to the inner surface of the outer wrapping strap 8 by the arc-shaped reset spring piece 24 abutting against both sides of the external protrusion 25.

[0037] The arc-shaped compression monitoring frame 17 compresses both sides of the external protrusion 25 through the arc-shaped reset spring 24. This ensures that a gap is maintained between the arc-shaped compression monitoring frame 17 and the external protrusion 25 during normal use, facilitating the monitoring of external compression.

[0038] The horizontally positioned monitoring arm 20 is located in the gap between the two sides of the external protrusion 25.

[0039] To improve the guidance and stability of the flip extrusion, the electronically controlled pressure monitoring module 14 has a bottom guide extrusion groove 26 on the side wall near the lateral extrusion plate 19.

[0040] In this way, the arc-shaped extrusion monitoring frame 17 can maintain the guiding function of the lateral extrusion plate 19 when it is flipped, which makes the extrusion of the lateral extrusion plate 19 more stable when it is extruded by the pressure touch switch inside the electronically controlled pressure monitoring module 14.

[0041] The intelligent monitoring torsion-resistant flexible cable of this invention can test the internal temperature and stress of the cable by adding a monitoring signal line 12, which facilitates real-time monitoring of the cable's condition and changes in the external environment, thereby improving the cable's safety. An arc-shaped metal extrusion anti-torsion mechanism, consisting of a horizontal assembly shaft 16, an arc-shaped extrusion monitoring frame 17, a lateral bending extrusion rod 18, and a lateral extrusion plate 19, is installed inside the cable, which can improve the compressive strength of the entire outer layer of the cable. The arc-shaped metal extrusion anti-torsion mechanism flips under external extrusion pressure, thereby extruding the electrically controlled pressure monitoring module 14. The extrusion pressure monitored by the electrically controlled pressure monitoring module 14 is used to determine changes in the external environment and cable deformation, facilitating timely understanding and handling of the cable's condition. The installation of the monitoring signal line 12 and the connected electrically controlled pressure monitoring module 14 and temperature monitoring module 15 inside the internal monitoring frame 10 greatly improves the safety and stability of the monitoring mechanism. The detachable structural design significantly reduces the difficulty of initial assembly and production costs.

[0042] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A smart monitoring torsion-resistant flexible cable, comprising a cable body, characterized in that: The cable body, from the inside out, includes a central conductor (1), an inner wrapping tape (2), an inner shielding sleeve (3), an insulating sleeve (4), an outer shielding sleeve (5), a central wrapping tape (6), a metal shielding sleeve (7), an outer wrapping tape (8), and an outer sheath (9). Multiple arc-shaped metal extrusion anti-torsion mechanisms are provided between the outer side of the metal shielding sleeve (7) and the outer sheath (9). The inner arc-shaped surface of the outer wrapping tape (8) has an inwardly protruding internal monitoring frame (10). The two sides of the internal monitoring frame (10) are staggered and have lateral assembly ports (11) for installing the arc-shaped metal extrusion anti-torsion mechanisms. The monitoring signal line (12) for transmitting signals is installed inside the internal monitoring frame (10). The inner side of the internal monitoring frame (10) has an internal mounting seat (13) for supporting the monitoring signal line (12). The internal mounting seat (13) is fixedly equipped with an electrically controlled pressure monitoring module (14) and a temperature monitoring module (15) that cooperate with the arc-shaped metal extrusion anti-torsion mechanism. The arc-shaped metal extrusion anti-torsion mechanism includes a horizontal assembly shaft (16) that is movably inserted into the side assembly port (11), an arc-shaped extrusion monitoring frame (17) that is fixedly installed on one side of the horizontal assembly shaft (16), a lateral bending extrusion rod (18) that is fixedly installed on the other side of the horizontal assembly shaft (16), and a lateral extrusion plate (19) that is fixed on the side wall of the lateral bending extrusion rod (18).

2. The intelligent monitoring torsion-resistant flexible cable according to claim 1, characterized in that: The arc-shaped compression monitoring frame (17) has outwardly protruding horizontal monitoring arms (20) on both sides of its side walls.

3. The intelligent monitoring torsion-resistant flexible cable according to claim 1, characterized in that: The inner side of the side assembly port (11) has an inner mounting seat (21) for assembling the horizontal assembly shaft (16). The arc-shaped metal extrusion anti-torsion mechanism is movably connected to the internal monitoring frame (10) by inserting the horizontal assembly shaft (16) from the side assembly port (11) into the inner mounting seat (21).

4. The intelligent monitoring torsion-resistant flexible cable according to claim 1, characterized in that: The internal mounting base (13) has a lateral mounting slot with an opening on one side on its mounting surface. The electrically controlled pressure monitoring module (14) and temperature monitoring module (15) are inserted into the lateral mounting slot through the lateral assembly block on the mounting surface and are fixed to the internal mounting base (13).

5. The intelligent monitoring torsion-resistant flexible cable according to claim 1, characterized in that: The inner arc-shaped surface of the arc-shaped extrusion monitoring frame (17) is provided with an arc-shaped extrusion groove (23) that cooperates with the metal shielding sleeve (7).

6. The intelligent monitoring torsion-resistant flexible cable according to claim 5, characterized in that: The inner side of the arc-shaped extrusion groove (23) is symmetrically provided with arc-shaped lateral receiving grooves, and the inside of the arc-shaped lateral receiving groove has an arc-shaped reset spring (24) at the opening position.

7. The intelligent monitoring torsion-resistant flexible cable according to claim 6, characterized in that: The outer surface of the metal shielding sleeve (7) has an outwardly protruding external protrusion (25), and the arc-shaped compression monitoring frame (17) is connected to the inner side of the outer wrapping strap (8) by the arc-shaped reset spring (24) against both sides of the external protrusion.

8. The intelligent monitoring torsion-resistant flexible cable according to claim 1, characterized in that: The electrically controlled pressure monitoring module (14) has a bottom guide extrusion groove (26) on the side wall near the lateral extrusion plate (19).

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