A torsion-resistant flexible cable with built-in stretch monitoring device

Abstract

The application relates to the technical field of power transmission equipment monitoring, in particular to a torsion-resistant flexible cable with a built-in stretch monitoring device, which comprises a cable body. The torsion-resistant flexible cable with the built-in stretch monitoring device is provided with an external positioning ring on the outer side of a metal shielding sleeve, the external positioning ring is used for improving the compression strength of the outer side of the cable and facilitating assembly; an external monitoring seat connected with a lateral monitoring pull rope is arranged on the outer side of the external positioning ring, the external monitoring seat is simple and convenient to assemble and disassemble, different positions can be monitored according to needs, and the monitoring range is wider; the lateral monitoring frame is used for extruding the centering pressure monitoring module through the lateral monitoring pull rope, the strength of the extrusion and the torsion can be monitored, the monitored data is more accurate, the later maintenance is facilitated, and the monitoring cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of power transmission equipment monitoring technology, and in particular to a torsion-resistant flexible cable with a built-in tensile monitoring device. Background Technology

[0002] With its long coastline, the region boasts abundant marine resources. As the electricity load in the adjacent southeastern coastal areas increases year by year, offshore wind power is becoming one of the main energy development strategies to facilitate energy consumption.

[0003] To better meet the demands of offshore wind power energy transmission, high-voltage torsion-resistant cables are required. Due to their complex operating environment, high voltage resistance, and frequent torsion, the requirements for these cables are very stringent. To improve the safety of these torsion-resistant cables, monitoring mechanisms need to be installed. Current monitoring mechanisms mainly use built-in monitoring modules, which cannot monitor the degree of torsion and torsional force at different locations on the cable. Furthermore, the monitoring range is limited, and the stability during installation and removal is insufficient. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an improved torsion-resistant flexible cable with a built-in tensile monitoring device in order to solve the problems existing in the background art. This solves the problem that the current monitoring mechanism mainly uses a built-in monitoring module, which cannot monitor the torsion degree and torsional force at different positions of the cable, and has a limited monitoring range and insufficient installation and removal stability.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a torsion-resistant flexible cable with a built-in tensile monitoring device, comprising a cable body, wherein the cable body is provided with an outer sheath, an outer wrapping tape, a metal shielding sleeve, a middle wrapping tape, a first shielding sleeve, an insulating sleeve, a second shielding sleeve, an inner wrapping tape, and a central conductor in sequence from the outside to the inside; an external positioning ring is installed on the outer surface of the metal shielding sleeve; an external monitoring seat is installed on the outer surface of the external positioning ring; and lateral monitoring pull ropes for monitoring the torsion state and position of the cable body are elastically fitted on both sides of the external monitoring seat.

[0006] The outer arc-shaped surface of the external positioning ring is provided with an arc-shaped positioning groove for improving the installation stability of the external monitoring base. The outer arc-shaped surface of the external monitoring base is provided with an arc-shaped assembly groove that matches the arc-shaped positioning groove. The external monitoring base is inserted into the arc-shaped positioning groove through the arc-shaped assembly groove and is fixed to the external positioning ring.

[0007] The external monitoring base includes an outer shell, a first flared hole on the left side of the outer shell, a second flared hole on the right side of the outer shell, a lateral monitoring frame installed inside the first and second flared holes, a central monitoring cavity located in the middle of the outer shell, and a central pressure monitoring module installed inside the central monitoring cavity.

[0008] The inner surfaces of the first and second flared holes are offset to form lateral expansion holes for sliding assembly of the lateral monitoring frame, and the outer surface of the central pressure monitoring module is provided with a lateral guide groove corresponding to the lateral expansion hole.

[0009] The central pressure monitoring module includes a central assembly plate fixed inside the central monitoring cavity and lateral pressure monitoring modules installed on the two side walls of the central assembly plate to cooperate with the lateral monitoring frame.

[0010] Metal conductive frames for transmitting monitoring signals are installed on the inner arc-shaped surfaces of both the arc-shaped positioning groove and the arc-shaped assembly groove.

[0011] The external positioning ring has a built-in signal transmission line installed on its side wall for connecting to the metal conductive frame.

[0012] The lateral monitoring frame includes an annular adjustment frame disposed inside the first flared hole and the second flared hole, an L-shaped lateral extrusion arm fixed on the side wall of the annular adjustment frame, and an internal notch frame fixed in the middle position of the annular adjustment frame.

[0013] The pull rope for lateral monitoring is equipped with lateral assembly blocks at both ends that mate with the internal notch frame.

[0014] Lateral limiting slots are symmetrically provided on the inner walls of both sides of the arc-shaped assembly groove, and lateral limiting blocks are symmetrically provided on the outer walls of both sides of the outer positioning ring.

[0015] The beneficial effects of this invention are:

[0016] (1) The torsion-resistant flexible cable with a built-in tensile monitoring device of the present invention has an external positioning ring installed on the outer surface of the metal shielding sleeve. The external positioning ring improves the compressive strength of the outer side of the cable and facilitates assembly.

[0017] (2) An external monitoring seat is installed on the outer side of the external positioning ring and connected by a pull rope for lateral monitoring. It is not only easy to install and remove, but also allows for monitoring at different locations as needed, thus expanding the monitoring range.

[0018] (3) By using a pull rope to control the lateral monitoring frame to squeeze the central pressure monitoring module, the intensity of torsion and compression can be monitored. The monitored data is more accurate, which facilitates later maintenance and reduces monitoring costs.

[0019] (4) The pull rope for lateral monitoring is inserted into the internal notch frame and connected to the annular adjustment frame through the lateral assembly blocks at both ends. It adopts a quick-release structure design, which is convenient for loading and unloading and reduces the cost of early installation and later use. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention.

[0022] Figure 2 This is a side sectional view of the present invention.

[0023] Figure 3 This is a partial cross-sectional view of the assembly end of the external monitoring base in this invention. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] Figure 1 , Figure 2 and Figure 3 The torsion-resistant flexible cable with a built-in tensile monitoring device shown includes a cable body. Inside the cable body, from the outside to the inside, there are an outer sheath 1, an outer wrapping tape 2, a metal shielding sleeve 3, a middle wrapping tape 4, a first shielding sleeve 5, an insulating sleeve 6, a second shielding sleeve 7, an inner wrapping tape 8, and a central conductor 9. An external positioning ring 10 is installed on the outer surface of the metal shielding sleeve 3. An external monitoring seat is installed on the outer surface of the external positioning ring 10. Lateral monitoring pull ropes 11 for monitoring the torsion state and position of the cable body are elastically fitted on both sides of the external monitoring seat.

[0027] To facilitate lateral assembly, an arc-shaped positioning groove 12 is provided on the outer arc-shaped surface of the outer positioning ring 10 to improve the installation stability of the external monitoring base. An arc-shaped assembly groove 13 is provided on the outer arc-shaped surface of the external monitoring base to cooperate with the arc-shaped positioning groove 12. The external monitoring base is inserted into the arc-shaped positioning groove 12 through the arc-shaped assembly groove 13 and is fixed to the outer positioning ring 10.

[0028] To facilitate real-time monitoring, the external monitoring base includes an outer housing 14, a first flared hole 15 on the left side of the outer housing 14, a second flared hole 16 on the right side of the outer housing 14, a lateral monitoring frame installed inside the first flared hole 15 and the second flared hole 16, a central monitoring cavity located in the middle of the outer housing 14, and a central pressure monitoring module installed inside the central monitoring cavity.

[0029] When the cable body is squeezed or twisted, it will exert a pulling force on the lateral monitoring pull rope 11. The lateral monitoring pull rope 11 will pull the lateral monitoring frame on one side, and then squeeze the central pressure monitoring module through the lateral monitoring frame. The angle of twist, the magnitude of the force and the location of deformation can be determined according to the magnitude of the pulling force.

[0030] The lateral detection frames inside the first flared hole 15 and the second flared hole 16 are installed in a sliding manner, while the other is installed in a fixed manner. This ensures that the pull rope 11 for lateral monitoring will only pull the lateral monitoring frame on one side.

[0031] To facilitate telescoping and guiding, the inner surfaces of the first flared hole 15 and the second flared hole 16 are offset to form lateral telescoping holes for sliding assembly of the lateral monitoring frame, and the outer surface of the central pressure monitoring module is provided with a lateral guide groove 17 corresponding to the lateral telescoping holes.

[0032] To facilitate installation and lateral pressure detection, the central pressure monitoring module includes a central mounting plate 18 fixed inside the central monitoring cavity and lateral pressure monitoring modules 19 installed on both side walls of the central mounting plate 18 to cooperate with the lateral monitoring frame.

[0033] Lateral pressure detection module 19 is existing technology, which determines the pressure magnitude based on the extension stroke.

[0034] To facilitate conductivity and signal transmission, metal conductive frames 20 for transmitting monitoring signals are installed on the inner arc-shaped surfaces of the arc-shaped positioning groove 12 and the arc-shaped assembly groove 13.

[0035] To facilitate the transmission and conduction of the monitored signals, an internal signal transmission line 21 for connecting to the metal conductive frame 20 is installed on the side wall of the external positioning ring 10.

[0036] To facilitate lateral telescopic adjustment, the lateral monitoring frame includes an annular adjustment frame 22 disposed inside the first flared hole 15 and the second flared hole 16, an L-shaped lateral extrusion arm 23 fixed on the side wall of the annular adjustment frame 22, and an internal notch frame 24 fixed in the middle position of the annular adjustment frame 22.

[0037] The inner notch frame 24 is fixed to the inside of the annular adjustment frame 22 by a lateral bracket. The inner notch frame 24 has a funnel-shaped structure, and an opening is made on one side of the inner notch frame 24 for loading and unloading the pull rope 11 for lateral monitoring.

[0038] To facilitate lateral connection, the two ends of the lateral monitoring pull rope 11 are equipped with lateral assembly blocks 25 that mate with the internal notch frame 24.

[0039] To improve the firmness and stability of the external monitoring base assembly, lateral limiting slots are symmetrically provided on the inner walls of both sides of the arc-shaped assembly groove 13, and lateral limiting blocks 26 are symmetrically provided on the outer walls of both sides of the external positioning ring 10.

[0040] The outer side wall of the lateral limiting block 26 and the inner side wall of the lateral limiting slot are provided with matching inclined guide surfaces, which facilitates installation and prevents loosening.

[0041] The present invention discloses a torsion-resistant flexible cable with a built-in tensile monitoring device. An external positioning ring 10 is installed on the outer surface of the metal shielding sleeve 3. The external positioning ring 10 enhances the compressive strength of the cable's outer side and facilitates assembly. An external monitoring seat, connected by a lateral monitoring pull rope 11, is installed on the outer surface of the external positioning ring 10. This not only simplifies installation and removal but also allows monitoring from multiple locations as needed, expanding the monitoring range. The lateral monitoring pull rope 11 controls the lateral monitoring frame to compress the central pressure monitoring module, enabling monitoring of the torsion and compression strength. This results in more accurate data, facilitates later maintenance, and reduces monitoring costs. The lateral monitoring pull rope 11 is inserted into the internal notch frame 24 and connected to the annular adjustment frame 22 via lateral assembly blocks 25 at both ends. This quick-release design facilitates installation and removal, reducing initial installation and subsequent usage 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 torsion-resistant flexible cable with a built-in tensile monitoring device, comprising a cable body, characterized in that: The cable body is provided with an outer sheath (1), an outer wrapping tape (2), a metal shielding sleeve (3), a middle wrapping tape (4), a first shielding sleeve (5), an insulating sleeve (6), a second shielding sleeve (7), an inner wrapping tape (8), and a central conductor (9) in sequence from the outside to the inside. An outer positioning ring (10) is installed on the outer side of the metal shielding sleeve (3). An external monitoring seat is installed on the outer side of the external positioning ring (10). The external monitoring seat is elastically fitted with pull ropes (11) on both sides for monitoring the torsion state and position of the cable body. The outer arc surface of the external positioning ring (10) is provided with an arc-shaped positioning groove (12) for improving the installation stability of the external monitoring seat. The outer arc surface of the external monitoring seat is provided with an arc-shaped assembly groove (13) that matches the arc-shaped positioning groove (12). The external monitoring seat is inserted into the arc-shaped positioning groove (12) through the arc-shaped assembly groove (13) and fixed to the outer positioning ring (10). The external monitoring base includes an outer shell (14), a first flared hole (15) on the left side of the outer shell (14), a second flared hole (16) on the right side of the outer shell (14), a lateral monitoring frame installed inside the first flared hole (15) and the second flared hole (16), a central monitoring cavity located in the middle of the outer shell (14), and a central pressure monitoring module installed inside the central monitoring cavity.

2. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 1, characterized in that: The inner surfaces of the first flared hole (15) and the second flared hole (16) are offset to provide lateral expansion holes for sliding assembly of the lateral monitoring frame. The outer surface of the central pressure monitoring module is provided with a lateral guide groove corresponding to the lateral expansion hole.

3. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 2, characterized in that: The central pressure monitoring module includes a central assembly plate (18) fixed inside the central monitoring cavity and a lateral pressure monitoring module (19) installed on both sides of the central assembly plate (18) to cooperate with the lateral monitoring frame.

4. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 2, characterized in that: Metal conductive frames (20) for transmitting monitoring signals are installed on the inner arc-shaped surfaces of the arc-shaped positioning groove (12) and the arc-shaped assembly groove (13).

5. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 4, characterized in that: The external positioning ring (10) has a built-in signal transmission line (21) installed on its side wall for connecting to the metal conductive frame (20).

6. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 2, characterized in that: The lateral monitoring frame includes an annular adjustment frame (22) disposed inside the first flared hole (15) and the second flared hole (16), an L-shaped lateral extrusion arm (23) fixed on the side wall of the annular adjustment frame (22), and an internal notch frame (24) fixed in the middle of the annular adjustment frame (22).

7. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 6, characterized in that: The lateral monitoring pull rope (11) has lateral assembly blocks (25) installed at both ends to cooperate with the internal notch frame (24).

8. A torsion-resistant flexible cable with a built-in tensile monitoring device according to claim 4, characterized in that: Lateral limiting slots are symmetrically provided on the inner walls of both sides of the arc-shaped assembly groove (13), and lateral limiting blocks (26) are symmetrically provided on the outer walls of both sides of the external positioning ring (10).

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