A high-strength multi-core control cable

Abstract

The present application discloses a high-strength multi-cable core control cable, which includes an outer sheath, an armor layer, a first shielding layer and a flame retardant tape wrapping layer from the outside to the inside. The flame retardant tape wrapping layer has multiple bracket units, multiple first cable cores, multiple second cable cores and multiple third cable cores. Each first cable core passes through all the bracket units, each second cable core passes through all the bracket units, and each third cable core passes through all the bracket units. The control cable of the present application can realize the installation of multiple cable cores, thereby meeting the installation requirements of more control cables. A skeleton unit is provided, and by providing the bracket unit, the strength of the control cable is improved. A temperature measuring optical fiber is installed, so that the internal temperature of the control cable can be measured. When the internal temperature is abnormal, it can be detected, so that the maintenance personnel can deal with the abnormality in time. And it can realize the monitoring of the pressure or excessive bending of the control cable.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and more particularly to a high-strength multi-core control cable. Background Art

[0002] Control cables are used in industrial and mining enterprises, energy and transportation sectors, and are used to transmit low-voltage and current control signals and connect measurement systems. They connect various electrical appliances, instruments, meters, and automatic devices, enabling the transmission of electrical energy signals for startup, operation, control, signal display, and measurement.

[0003] Existing control cables often have a relatively simple design, and the number of cable cores and layout cannot meet diverse installation requirements. In some complex control systems or large-scale engineering projects, a large number of control cables may need to be installed, and the design of traditional cables often limits the number of installations and flexibility. Some control cables lack mechanical strength and are easily damaged or worn by external forces, resulting in reduced cable performance. When the cable is compressed or excessively bent, its insulation layer may be damaged and the conductor may be deformed, which may affect the performance and service life of the cable. However, cables often lack the ability to monitor pressure or excessive bending, making these problems difficult to detect and address in a timely manner. Some control cables also do not have internal temperature measurement functions, which makes it difficult for maintenance personnel to detect abnormal temperatures inside the cable in a timely manner. Summary of the Invention

[0004] The present invention aims to overcome the defects of the prior art and provide a high-strength multi-core control cable.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a control cable, comprising, from the outside to the inside, an outer sheath, an armor layer, a first shielding layer and a flame-retardant tape wrapping layer, wherein the flame-retardant tape wrapping layer comprises a plurality of bracket units, a plurality of first cable cores, a plurality of second cable cores and a plurality of third cable cores, each first cable core passes through all the bracket units, each second cable core passes through all the bracket units, and each third cable core passes through all the bracket units.

[0006] Furthermore, the plurality of bracket units are distributed at equal intervals.

[0007] Furthermore, the length of the bracket unit is greater than or equal to 20 cm.

[0008] Furthermore, the interval between adjacent bracket units is less than 1 meter.

[0009] Furthermore, the bracket unit includes two first brackets, two second brackets and two third brackets, the first bracket includes a first inner enclosure and a first outer enclosure, the first inner enclosure includes a first inner arc panel, the first outer enclosure includes a plurality of first outer arc panels, two adjacent first outer arc panels are connected by a first arc-shaped mounting plate, each first mounting plate is installed with a first cable core, and each first mounting plate of the first bracket is connected to the first inner arc panel; the second bracket includes a second inner enclosure and a second outer enclosure, the second inner enclosure includes a plurality of second inner arc panels, a first arc-shaped covering plate is connected between two adjacent second inner arc panels, and each first covering plate has a first cable core, the second outer enclosure includes a plurality of second outer arc panels, a second arc-shaped mounting plate or a third arc-shaped mounting plate is connected between two adjacent second outer arc panels, the second mounting plate and the third mounting plate of the second outer enclosure are alternately distributed, and each of the second bracket The second mounting plate is connected to a second inner arc panel, and a second cable core is installed at each second mounting plate, and a third cable core is installed at each third mounting plate, and an arc-shaped inner end connecting plate is connected between the end of the second inner enclosure and the end of the second outer enclosure; the third bracket includes a third inner enclosure and a third outer enclosure, and the third inner enclosure includes a plurality of third inner arc panels, and a second covering plate or a third covering plate is connected between two adjacent third inner arc panels, the second covering plate and the third covering plate of the third inner enclosure are alternately distributed, and the third outer enclosure includes a plurality of third outer arc panels, and an arc-shaped connecting plate is connected between two adjacent third outer arc panels, each second covering plate is connected to a third outer arc panel, and each third covering plate is connected to a arc-shaped connecting plate, and an arc-shaped outer end connecting plate is connected between the end of the third enclosure and the end of the fourth enclosure, and each second covering plate has a second cable core, and each third covering plate has a third cable core.

[0010] Furthermore, for each bracket unit, each first cable core is surrounded by a first mounting plate and a first covering plate.

[0011] Furthermore, for each bracket unit, each second cable core is surrounded by a second mounting plate and a second covering plate.

[0012] Further, for each bracket unit, each third cable core is surrounded by a third mounting plate and a third covering plate.

[0013] Furthermore, the arc corresponding to the cross section of the first mounting plate is greater than 180 degrees; the arc corresponding to the cross section of the second mounting plate is greater than 180 degrees; and the arc corresponding to the cross section of the third mounting plate is greater than 180 degrees.

[0014] Thus, the first cable core can be embedded in the first installation plate, the second cable core can be embedded in the second installation plate, and the third cable core can be embedded in the third installation plate, thereby facilitating the installation of the first cable core, the second cable core, and the third cable core.

[0015] Furthermore, the first bracket, the second bracket and the third bracket are all made of heat-conducting metal materials.

[0016] Furthermore, the first bracket, the second bracket and the third bracket are all made of copper-aluminum alloy.

[0017] Thereby, the temperature inside the controlled cable can be better transferred to the bracket unit and detected by the temperature measuring optical fiber.

[0018] Furthermore, the first cable core includes a first conductor and a first insulating layer; the second cable core includes a second conductor and a second insulating layer; and the third cable core includes a third conductor and a third insulating layer.

[0019] Furthermore, the first shielding layer is made of a copper wire braided shielding layer.

[0020] Further, each first bracket includes five first mounting plates, each second bracket includes five first covering plates, four second mounting plates, five third mounting plates and two inner end connecting plates, and each third bracket includes four second covering plates, five third covering plates and two outer end connecting plates.

[0021] Furthermore, the control cable includes 10 first cable cores, 8 second cable cores and 10 third cable cores.

[0022] Furthermore, the third bracket includes 6 third outer arc panels and 5 arc surface connecting plates.

[0023] Furthermore, it also includes two fourth cable cores, which include an inner sheath and a second shielding layer from the outside to the inside, and the second shielding layer has a core wire, and the core wire includes a fourth insulating layer and a fourth conductor. One side of the inner sheath has two inner protrusions, and the other side has two outer protrusions; the inner end connecting plate is fixedly connected with an inner protrusion, and the inner protrusion has an inner embedding groove that cooperates with the inner protrusion; the outer end connecting plate is fixedly connected with an outer protrusion, and the outer protrusion has an outer embedding groove that cooperates with the outer protrusion, and each fourth cable core is wrapped by the two inner end connecting plates and two outer end connecting plates of the bracket unit.

[0024] Furthermore, the cross section of the inner protective layer has two opposite first arcs and two opposite first straight lines.

[0025] Furthermore, it also includes a skeleton unit and two temperature measuring optical fibers, and the skeleton unit passes through all the bracket units; support protrusions are fixed on both sides of the first inner arc panel, and the side surfaces of the support protrusions have multiple limiting grooves, and the end faces of the support protrusions have installation grooves, and the installation grooves are used to install the temperature measuring optical fibers; the skeleton unit is surrounded by the two first inner arc panels of each bracket unit, and the skeleton unit includes a first skeleton and a second skeleton, and both sides of the first skeleton have multiple limiting protrusions that cooperate with the limiting grooves, and the first skeleton also has an accommodating groove extending along the length direction of the control cable, and the second skeleton is installed in the accommodating groove, and the accommodating groove has two first optical fiber grooves, and the second skeleton has two second optical fiber grooves, the two first optical fiber grooves and the two second optical fiber grooves correspond one to one, and the corresponding first optical fiber grooves and second optical fiber grooves are spliced ​​into an optical fiber groove portion, and the optical fiber groove portion is installed with the optical fiber of the optical fiber pressure sensor.

[0026] Furthermore, the control cable includes optical fibers of two optical fiber pressure sensors.

[0027] Furthermore, the first skeleton has eight limiting protrusions, and the side surface of each supporting protrusion has two limiting grooves.

[0028] Furthermore, the first skeleton and the second skeleton are both hollow structures.

[0029] Furthermore, the first frame and the second frame are both made of nylon material or PVC material.

[0030] Beneficial effects:

[0031] 1. The control cable of the present application can realize the installation of multiple cable cores, thereby meeting the installation requirements of more control cables.

[0032] 2. The control cable of the present application is provided with a skeleton unit, and by providing a bracket unit, the strength of the control cable is improved.

[0033] 3. The control cable of the present application is equipped with a temperature measuring optical fiber, so that the internal temperature of the control cable can be measured. When the internal temperature is abnormal, it can be detected so that maintenance personnel can deal with the abnormality in time.

[0034] 4. The control cable of the present application can monitor the compression or excessive bending of the control cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the cross section of the control cable;

[0036] Figure 2 This is an enlarged view of area A;

[0037] Figure 3 This is a schematic diagram of the control cable;

[0038] Figure 4 This is an enlarged view of area B;

[0039] Figure 5 This is an enlarged view of area C;

[0040] Figure 6 This is a schematic diagram of the separated cross section of the control cable components;

[0041] Figure 7 This is an enlarged view of area D;

[0042] Figure 8 This is an enlarged view of area E;

[0043] Figure 9 This is an enlarged view of area F;

[0044] Figure 10 This is an enlarged view of area G;

[0045] Figure 11 This is a schematic diagram of the separation of control cable components;

[0046] Figure 12 This is an enlarged view of the H region;

[0047] Figure 13 This is an enlarged view of area I.

[0048] Explanation of reference numerals: outer sheath 1; armor layer 2; first shielding layer 3; flame retardant tape wrapping layer 4; first bracket 5; first inner arc panel 5.1; first outer arc panel 5.2; first mounting plate 5.3; supporting protrusion 5.4; limiting groove 5.5; second bracket 6; second inner arc panel 6.1; first covering plate 6.2; second outer arc panel 6.3; second mounting plate 6.4; third mounting plate 6.5; inner end connecting plate 6.6; inner protrusion 6.7; inner embedded groove 6.8; third bracket 7; third inner arc panel 7.1; second covering plate 7.2; third covering plate 7.3; third outer arc panel 7.4; arc surface connecting plate 7.5; outer end Connecting plate 7.6; external protrusion 7.7; external embedding groove 7.8; first cable core 8; first conductor 8.1; first insulating layer 8.2; second cable core 9; second conductor 9.1; second insulating layer 9.2; third cable core 10; third conductor 10.1; third insulating layer 10.2; fourth cable core 11; inner sheath 11.1; second shielding layer 11.2; fourth insulating layer 11.3; fourth conductor 11.4; inner protrusion 11.5; outer protrusion 11.6; temperature measuring optical fiber 12; first skeleton 13; limiting protrusion 13.1; accommodating groove 13.2; first optical fiber groove 13.3; second skeleton 14; optical fiber 15 of pressure optical fiber sensor. DETAILED DESCRIPTION

[0049] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0050] The present invention provides a high-strength multi-cable core control cable as shown in the figure, which comprises, from the outside to the inside, an outer sheath 1, an armor layer 2, a first shielding layer 3 and a flame retardant tape wrapping layer 4, wherein the flame retardant tape wrapping layer 4 has a plurality of bracket units, a plurality of first cable cores 8, a plurality of second cable cores 9 and a plurality of third cable cores 10, each first cable core 8 passes through all the bracket units, each second cable core 9 passes through all the bracket units, and each third cable core 10 passes through all the bracket units. The bracket unit comprises two first brackets 5, two second brackets 6 and two third brackets 7, the first bracket 5 comprises a first inner surrounding portion and a first outer surrounding portion, the first inner surrounding portion comprises a first inner arc panel 5.1, the first outer surrounding portion comprises a plurality of first outer arc panels 5.2, two adjacent first outer arc panels 5.2 are connected by an arc-shaped first mounting plate 5.3, each first mounting plate 5.3 is installed with a first cable core 8, and each first mounting plate 5.3 of the first bracket is connected to the first inner arc panel 5.1; the second bracket 6 comprises a second inner surrounding portion. and a second outer surrounding portion, wherein the second inner surrounding portion comprises a plurality of second inner arc panels 6.1, a first arc-shaped covering plate 6.2 is connected between two adjacent second inner arc panels 6.1, and each first covering plate has a first cable core 8, and the second outer surrounding portion comprises a plurality of second outer arc panels 6.3, a second arc-shaped mounting plate 6.4 or a third arc-shaped mounting plate 6.5 is connected between two adjacent second outer arc panels 6.3, and the second mounting plates 6.4 and the third mounting plates 6.5 of the second outer surrounding portion are alternately distributed, and each second mounting plate 6.4 of the second bracket and a The second inner arc panels 6.1 are connected, each second mounting plate 6.4 is equipped with a second cable core 9, each third mounting plate 6.5 is equipped with a third cable core 10, and an arc-shaped inner end connecting plate 6.6 is connected between the end of the second inner enclosure and the end of the second outer enclosure; the third bracket 7 includes a third inner enclosure and a third outer enclosure, and the third inner enclosure includes a plurality of third inner arc panels 7.1, and a second covering plate 7.2 or a third covering plate 7.3 is connected between two adjacent third inner arc panels 7.1. The second covering plate of the third inner enclosure is connected to the outer end of the second outer enclosure. 7.2 and the third covering plate 7.3 are alternately distributed, the third outer surrounding portion includes a plurality of third outer arc panels 7.4, and an arc connecting plate 7.5 is connected between two adjacent third outer arc panels 7.4. Each second covering plate 7.2 is connected to a third outer arc panel 7.4, and each third covering plate 7.3 is connected to a arc connecting plate 7.5. An arc-shaped outer end connecting plate 7.6 is connected between the end of the third surrounding portion and the end of the fourth surrounding portion. Each second covering plate 7.2 has a second cable core 9, and each third covering plate 7.3 has a third cable core 10.

[0051] The first cable core 8 includes a first conductor 8.1 and a first insulation layer 8.2; the second cable core 9 includes a second conductor 9.1 and a second insulation layer 9.2; and the third cable core 10 includes a third conductor 10.1 and a third insulation layer 10.2. Each first bracket includes five first mounting plates 5.3; each second bracket includes five first covering plates 6.2, four second mounting plates 6.4, five third mounting plates 6.5, and two inner end connection plates 6.6; each third bracket includes four second covering plates 7.2, five third covering plates 7.3, and two outer end connection plates 7.6. The control cable includes ten first cable cores 8, eight second cable cores 9, and ten third cable cores 10. The control cable also includes two fourth cable cores 11, which include an inner sheath 11.1 and a second shielding layer 11.2 from the outside to the inside, and a core wire is provided in the second shielding layer 11.2, and the core wire includes a fourth insulating layer 11.3 and a fourth conductor 11.4. The cross-section of the inner sheath 11.1 has two opposite first arcs and two opposite first straight lines, one side of the inner sheath 11.1 has two inner protrusions 11.5, and the other side has two outer protrusions 11.6; the inner end connecting plate 6.6 is fixedly connected to an inner protrusion 6.7, and the inner protrusion 6.7 has an inner embedding groove 6.8 that cooperates with the inner protrusion 11.5, and the outer end connecting plate 7.6 is fixedly connected to an outer protrusion 7.7, and the outer protrusion 7.7 has an outer embedding groove 7.8 that cooperates with the outer protrusion 11.6. Each fourth cable core 11 is wrapped by the two inner end connecting plates 6.6 and two outer end connecting plates 7.6 of the bracket unit.

[0052] The control cable also includes a skeleton unit and two temperature measuring optical fibers 12, and the skeleton unit passes through all the bracket units; support protrusions 5.4 are fixed on both sides of the first inner arc panel 5.1, and the side surfaces of the support protrusions 5.4 have multiple limiting grooves 5.5, and the end surfaces of the support protrusions 5.4 have installation grooves, and the installation grooves are used to install the temperature measuring optical fibers 12; the skeleton unit is surrounded by the two first inner arc panels 5.1 of each bracket unit, and the skeleton unit includes a first skeleton 13 and a second skeleton 14, and the two sides of the first skeleton 13 have multiple The first frame 13 also has a retaining groove 13.2 extending along the length of the control cable, and the second frame 14 is mounted within the retaining groove 13.2. The retaining groove 13.2 has two first fiber optic grooves 13.3, and the second frame 14 has two second fiber optic grooves. The two first fiber optic grooves 13.3 correspond to the two second fiber optic grooves one-to-one. The corresponding first fiber optic grooves 13.3 and second fiber optic grooves are spliced ​​to form a fiber optic groove portion, in which the optical fiber 15 of the fiber optic pressure sensor is mounted. The first frame 13 has eight retaining protrusions 13.1, and each support protrusion 5.4 has two retaining grooves 5.5 on its side. Both the first frame 13 and the second frame 14 are hollow structures. Both the first frame 13 and the second frame 14 are made of nylon or PVC.

[0053] Working Principle: The control cable of this application features multiple cable core types, thus meeting a wide range of control cable installation requirements. A skeleton unit runs the entire length of the cable, with bracket units spaced at intervals, thereby improving the overall strength of the control cable. The coordination between the internal embedding groove and the internal protrusion, the external embedding groove and the external protrusion, and the limiting groove and the limiting protrusion facilitates the closed installation of the two first brackets, two second brackets, and two third brackets of the bracket unit. The skeleton unit is made of a thermally conductive metal material, and temperature-sensing optical fibers are installed in the mounting grooves. Heat from the multiple cable cores within the control cable is transferred to the bracket units and can be detected by the temperature-sensing optical fibers, enabling detection of abnormal internal temperature of the control cable. An optical fiber for a fiber optic pressure sensor is installed between the first and second skeletons. When the control cable is excessively squeezed or bent, the pressure applied is detected by the optical fiber of the fiber optic pressure sensor. This allows the control cable of this application to monitor both internal temperature and external pressure.

[0054] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A high-strength multi-core control cable, characterized in that: From the outside to the inside, it includes an outer protective layer, an armor layer, a first shielding layer and a flame retardant tape wrapping layer, wherein the flame retardant tape wrapping layer has a plurality of bracket units, a plurality of first cable cores, a plurality of second cable cores and a plurality of third cable cores, each first cable core passes through all the bracket units, each second cable core passes through all the bracket units, and each third cable core passes through all the bracket units; The bracket unit includes two first brackets, two second brackets and two third brackets, the first bracket includes a first inner enclosure and a first outer enclosure, the first inner enclosure includes a first inner arc panel, the first outer enclosure includes a plurality of first outer arc panels, two adjacent first outer arc panels are connected by a first arc-shaped mounting plate, each first mounting plate is installed with a first cable core, and each first mounting plate of the first bracket is connected to the first inner arc panel; the second bracket includes a second inner enclosure and a second outer enclosure, the second inner enclosure includes a plurality of second inner arc panels, a first arc-shaped covering plate is connected between two adjacent second inner arc panels, and each first covering plate has a first cable core, the second outer enclosure includes a plurality of second outer arc panels, a second arc-shaped mounting plate or a third arc-shaped mounting plate is connected between two adjacent second outer arc panels, the second mounting plate and the third mounting plate of the second outer enclosure are alternately distributed, and each second of the second bracket The mounting plate is connected to a second inner arc panel, and each second mounting plate is installed with a second cable core, and each third mounting plate is installed with a third cable core, and an arc-shaped inner end connecting plate is connected between the end of the second inner enclosure and the end of the second outer enclosure; the third bracket includes a third inner enclosure and a third outer enclosure, and the third inner enclosure includes a plurality of third inner arc panels, and a second covering plate or a third covering plate is connected between two adjacent third inner arc panels, and the second covering plate and the third covering plate of the third inner enclosure are alternately distributed, and the third outer enclosure includes a plurality of third outer arc panels, and an arc-shaped connecting plate is connected between two adjacent third outer arc panels, each second covering plate is connected to a third outer arc panel, and each third covering plate is connected to a arc-shaped connecting plate, and an arc-shaped outer end connecting plate is connected between the end of the third enclosure and the end of the fourth enclosure, and each second covering plate has a second cable core, and each third covering plate has a third cable core.

2. The high-strength multi-core control cable according to claim 1, characterized in that: The first cable core includes a first conductor and a first insulation layer; the second cable core includes a second conductor and a second insulation layer; and the third cable core includes a third conductor and a third insulation layer.

3. The high-strength multi-core control cable according to claim 1, characterized in that: Each first bracket includes five first mounting plates, each second bracket includes five first covering plates, four second mounting plates, five third mounting plates and two inner end connecting plates, and each third bracket includes four second covering plates, five third covering plates and two outer end connecting plates; the control cable includes 10 first cable cores, 8 second cable cores and 10 third cable cores.

4. The high-strength multi-core control cable according to claim 1, characterized in that: It also includes two fourth cable cores, which include an inner sheath and a second shielding layer from the outside to the inside, and a core wire is provided in the second shielding layer, and the core wire includes a fourth insulating layer and a fourth conductor. The cross-section of the inner sheath has two opposite first arcs and two opposite first straight lines, and one side of the inner sheath has two inner protrusions and the other side has two outer protrusions; the inner end connecting plate is fixedly connected with an inner protrusion, and the inner protrusion has an inner embedding groove that cooperates with the inner protrusion; the outer end connecting plate is fixedly connected with an outer protrusion, and the outer protrusion has an outer embedding groove that cooperates with the outer protrusion, and each fourth cable core is wrapped by the two inner end connecting plates and two outer end connecting plates of the bracket unit.

5. The high-strength multi-core control cable according to claim 1, characterized in that: It also includes a skeleton unit and two temperature measuring optical fibers, and the skeleton unit passes through all the bracket units; support protrusions are fixed on both sides of the first inner arc panel, and the side surfaces of the support protrusions have multiple limiting grooves, and the end faces of the support protrusions have installation grooves, and the installation grooves are used to install the temperature measuring optical fibers; the skeleton unit is surrounded by the two first inner arc panels of each bracket unit, and the skeleton unit includes a first skeleton and a second skeleton, and both sides of the first skeleton have multiple limiting protrusions that cooperate with the limiting grooves, and the first skeleton also has an accommodating groove extending along the length direction of the control cable, and the second skeleton is installed in the accommodating groove, and the accommodating groove has two first optical fiber grooves, and the second skeleton has two second optical fiber grooves, the two first optical fiber grooves and the two second optical fiber grooves correspond one to one, and the corresponding first optical fiber grooves and second optical fiber grooves are spliced ​​into an optical fiber groove portion, and the optical fiber groove portion is installed with an optical fiber of the optical fiber pressure sensor.

6. The high-strength multi-core control cable according to claim 5, characterized in that: The first frame is provided with 8 limiting protrusions, and the side surface of each supporting protrusion is provided with 2 limiting grooves; the first frame and the second frame are both hollow structures.

7. The high-strength multi-core control cable according to claim 5, characterized in that: The first frame and the second frame are both made of nylon material or PVC material.

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