Power cable capable of multi-maintenance monitoring

Abstract

The application discloses a kind of power cable capable of realizing multi-maintenance monitoring, including multiple cable bodies, multiple protection tubes and multiple functional tubes, each protection tube is passed by all cable bodies, each functional tube is passed by all cable bodies.The power cable of the application, multiple protection tubes and functional tubes are alternately distributed, thereby enhancing the mechanical strength of cable, providing multiple protection for cable.Functional tube has multiple functions such as heat dissipation, temperature measurement and humidity check, thereby active heat dissipation for multiple cable bodies can be realized, the heating condition of multiple cable bodies during use is monitored, and the moisture condition in functional tube and protection tube can also be judged.Functional tube and protection tube can be fixedly connected by inserting block, and functional tube and protection tube can be sealed by sealing unit, thereby enhancing the connection strength between the two.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more specifically, to a power cable capable of enabling multi-maintenance monitoring. Background Technology

[0002] Power cables can transmit high-voltage, medium-voltage, or low-voltage electrical energy to various types of equipment, such as buildings, factories, communication systems, and power transmission systems. Power cables are widely used in urban underground power grids, power plant lead-out lines, internal power supply for industrial and mining enterprises, and underwater power transmission lines across rivers and seas.

[0003] Existing power cables have relatively limited mechanical strength and protective capabilities. Especially in complex environments or harsh weather conditions, they are susceptible to damage from various external forces, which can affect the normal operation of the power system. Furthermore, traditional power cables have significant shortcomings in heat dissipation. Due to the lack of effective active cooling mechanisms, they are prone to overheating during use, and abnormal cable temperatures are difficult to detect and address in a timely manner. This not only affects the cable's lifespan but may also lead to safety accidents such as fires. In addition, power cables are prone to moisture absorption in high-humidity environments, especially in damp environments such as underground pipelines, where humidity issues are particularly prominent. Because cables lack humidity detection capabilities, these problems are often difficult to detect and address promptly, posing a significant threat to the safe operation of the power system. Summary of the Invention

[0004] The present invention aims to overcome the shortcomings of the prior art and provide a power cable that can achieve multi-maintenance monitoring.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power cable comprising multiple cable bodies, multiple protective tubes, and multiple functional tubes, wherein each protective tube is passed through all the cable bodies, and each functional tube is passed through all the cable bodies, the multiple protective tubes and multiple functional tubes are distributed along the length direction of the cable bodies, and the protective tubes and functional tubes are distributed alternately.

[0006] Furthermore, the inner sides of both ends of the protective tube have multiple annular protrusions; the functional tube includes a central tube and three partition units fixedly connected to the central tube. Each partition unit includes a radial block fixedly connected to the central tube, an arc-shaped surrounding plate fixedly connected to the radial block, and two insertion blocks respectively fixed to both ends of the radial block. The outer side of the insertion block has multiple arc-shaped protrusions. The insertion block is inserted into the end of an adjacent protective tube. One side of the surrounding plate has a strip-shaped protrusion, and the other side of the surrounding plate has a strip-shaped groove that cooperates with the strip-shaped protrusion. There are three cable bodies, with one cable body between two adjacent radial blocks.

[0007] Furthermore, the arc-shaped protrusion at the insertion block and the annular protrusion at the protective tube can make the connection between the functional tube and the protective tube tighter.

[0008] The raised and recessed strips of the surrounding plate allow for a tighter connection between adjacent surrounding plates.

[0009] Furthermore, the cable body comprises, from the outside to the inside, an outer sheath, an armor layer, and a flame-retardant layer. The flame-retardant layer contains multiple cable cores, each of which includes an insulation layer and a conductor.

[0010] Furthermore, it also includes a heat-conducting unit, which comprises a cylindrical block and three arc-shaped heat-conducting plates. Each heat-conducting plate is connected to a cylindrical block, and each heat-conducting plate contains one heat-conducting plate. The central tube has three through slots, and there is one through slot between two adjacent radial blocks. Each heat-conducting block passes through one through slot, and the cylindrical block is located inside the central tube. The three partition units are a heat dissipation partition unit, a temperature measurement partition unit, and a detection partition unit. The heat dissipation partition unit has two ventilation holes located on both sides of the cylindrical block. The ventilation holes extend from the inner circumferential surface of the central tube to the outer surface of the surrounding plate. The cylindrical block has a temperature measurement groove, and the temperature measurement partition unit has a temperature measurement channel communicating with the temperature measurement groove. The temperature measurement channel extends from the inner circumferential surface of the central tube to the outer surface of the surrounding plate. The radial block of the detection partition unit has a receiving groove, and the receiving groove has a filter unit for sealing the receiving groove. The receiving groove is filled with desiccant particles.

[0011] Furthermore, the ventilation hole has a first sealing block; the temperature measuring channel has a second sealing block.

[0012] Therefore, when heat dissipation is needed, the first sealing block can be removed to install and connect the ventilation pipe; when temperature measurement is needed, the second sealing block can be removed to install the temperature sensor.

[0013] Furthermore, the cylindrical block, the heat-conducting block, and the heat-conducting plate are all made of heat-conducting metal materials.

[0014] Furthermore, the cylindrical block, the heat-conducting block, and the heat-conducting plate are all made of copper-aluminum alloy.

[0015] Furthermore, the functional tube is made of PVC material.

[0016] Furthermore, it also includes a sealing unit, which comprises two sealing rings, a strip sealing band connecting the two sealing rings, and three connecting sealing bands connecting the two sealing rings. The strip sealing band has a strip-shaped slit, thereby dividing the strip sealing band into a first strip sealing band and a second strip sealing band. The second strip sealing band is connected to a strip-shaped protruding sealing band, which is bonded to the first strip sealing band with adhesive. The sealing rings are used to seal the connection position between the functional tube and the protective tube, and the connecting sealing bands are used to seal the connection position between two adjacent surrounding plates.

[0017] The sealing unit can be removed when inspection is required, and a new sealing unit can be installed after inspection, thereby achieving better sealing between the functional tube and the protective tube, as well as better sealing of the functional tube itself.

[0018] Furthermore, the sealing unit is made of rubber material.

[0019] Furthermore, the length of the insertion block is greater than or equal to half the length of the functional tube.

[0020] Beneficial effects:

[0021] 1. The power cable of this application has multiple protective tubes and functional tubes distributed alternately, thereby enhancing the mechanical strength of the cable and providing multiple protections for the cable.

[0022] 2. The power cable of this application has multiple functions such as heat dissipation, temperature measurement and humidity detection in the functional tube, thereby enabling active heat dissipation of multiple cable bodies, monitoring the heat generation of multiple cable bodies during use, and judging the moisture content in the functional tube and the protective tube.

[0023] 3. In the power cable of this application, the functional tube and the protective tube can be fixedly connected by an insertion block, and the functional tube and the protective tube can be sealed by a sealing unit, thereby enhancing the connection strength between the two. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the cable.

[0025] Figure 2 This is a magnified view of region A;

[0026] Figure 3 This is a magnified view of region B.

[0027] Figure 4 This is a magnified view of region C;

[0028] Figure 5 A first-view schematic diagram of cable component separation;

[0029] Figure 6 This is a magnified view of region D;

[0030] Figure 7 This is a magnified view of region E.

[0031] Figure 8 This is a magnified view of region F;

[0032] Figure 9 A second-view schematic diagram showing the separation of cable components.

[0033] Figure 10 This is a magnified view of region G.

[0034] Explanation of reference numerals in the attached drawings: Cable body 1; Outer sheath 1.1; Armor layer 1.2; Flame retardant layer 1.3; Insulation layer 1.4; Conductor 1.5; Protective tube 2; Circular protrusion 2.1; Functional tube 3; Central tube 3.1; Through groove 3.1.1; Radial block 3.2; Surrounding plate 3.3; Insertion block 3.4; Arc-shaped protrusion 3.5; Strip-shaped protrusion 3.6; Cylindrical block 4.1; Temperature measuring groove 4.1.1; Heat-conducting plate 4.2; Heat-conducting block 4.3; Ventilation hole 5; Temperature measuring channel 6; Filter unit 7; Sealing ring 8.1; Connecting sealing strip 8.2; First strip sealing strip 8.3; Second strip sealing strip 8.4; Protruding sealing strip 8.5. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] The present invention provides a power cable capable of multi-maintenance monitoring, as shown in the figure, comprising multiple cable bodies 1, multiple protective tubes 2 and multiple functional tubes 3. Each protective tube 2 is passed through all the cable bodies 1, and each functional tube 3 is passed through all the cable bodies 1. The multiple protective tubes 2 and multiple functional tubes 3 are distributed along the length of the cable bodies 1, and the protective tubes 2 and functional tubes 3 are distributed alternately.

[0037] The inner sides of both ends of the protective tube 2 have multiple annular protrusions 2.1; the functional tube 3 includes a central tube 3.1 and three partition units fixedly connected to the central tube 3.1. Each partition unit includes a radial block 3.2 fixedly connected to the central tube 3.1, an arc-shaped surrounding plate 3.3 fixedly connected to the radial block 3.2, and two insertion blocks 3.4 respectively fixed to both ends of the radial block 3.2. The outer side of the insertion block 3.4 has multiple arc-shaped protrusions 3.5. The insertion block 3.4 is inserted into the end of the adjacent protective tube 2. One side of the surrounding plate 3.3 has a strip-shaped protrusion 3.6, and the other side of the surrounding plate 3.3 has a strip-shaped groove that cooperates with the strip-shaped protrusion 3.6; there are three cable bodies 1, and one cable body 1 is located between two adjacent radial blocks 3.2. The cable body 1, from the outside to the inside, includes an outer sheath 1.1, an armor layer 1.2, and a flame-retardant layer 1.3. The flame-retardant layer 1.3 contains multiple cable cores, each cable core including an insulation layer 1.4 and a conductor 1.5. The power cable also includes a heat-conducting unit, which includes a cylindrical block 4.1 and three arc-shaped heat-conducting plates 4.2. Each heat-conducting plate 4.2 is connected to a cylindrical block 4.1 by a heat-conducting block 4.3, and each heat-conducting plate 4.2 contains one heat-conducting plate 4.2. The central tube 3.1 has three through slots 3.1.1, with one through slot 3.1.1 between two adjacent radial blocks 3.2. Each heat-conducting block 4.3 passes through one through slot 3.1.1. The cylindrical block 4.1 is located inside the central tube 3.1. The three partition units are a heat dissipation partition unit, a temperature measurement partition unit, and a detection partition unit. The unit has two ventilation holes 5 located on both sides of the cylindrical block 4.1. The ventilation holes 5 extend from the inner circumferential surface of the central tube 3.1 to the outer surface of the surrounding plate 3.3. The cylindrical block 4.1 has a temperature measuring groove 4.1.1, and the temperature measuring separation unit has a temperature measuring channel 6 connected to the temperature measuring groove 4.1.1. The temperature measuring channel 6 extends from the inner circumferential surface of the central tube 3.1 to the outer surface of the surrounding plate 3.3. The radial block 3.2 of the detection separation unit has a receiving groove, and the receiving groove has a filter screen unit 7 for sealing the receiving groove. The receiving groove is filled with desiccant particles.It also includes a sealing unit, which comprises two sealing rings 8.1, a strip sealing band connecting the two sealing rings 8.1, and three connecting sealing bands 8.2 connecting the two sealing rings 8.1. The strip sealing band has a strip-shaped slit, dividing it into a first strip sealing band 8.3 and a second strip sealing band 8.4. The second strip sealing band 8.4 is connected to a strip-shaped protruding sealing band 8.5, which is bonded to the first strip sealing band 8.3 with adhesive. The sealing rings 8.1 are used to seal the connection position between the functional tube 3 and the protective tube 2, and the connecting sealing bands 8.2 are used to seal the connection position between two adjacent surrounding plates 3.3. The length of the insertion block 3.4 is greater than or equal to half the length of the functional tube 3.

[0038] Working Principle: The power cable of this application has multiple functional tubes. The functional tubes and protective tubes are fixedly connected by insertion blocks, and the functional tubes and protective tubes are sealed by a sealing unit. The functional tubes have multiple functions. When needed, the two ventilation holes of the heat dissipation partition unit can be used to connect a first air duct for blowing air and a second air duct for exhausting air (the cylindrical block separates the two ventilation holes), so that the two functional tubes and the protective tube between the two functional tubes form a complete heat dissipation channel, thereby achieving active heat dissipation for multiple cable bodies.

[0039] Furthermore, a temperature sensor can be installed at the temperature measurement channel to detect the temperature of the temperature measurement groove at the cylindrical block, thereby monitoring the heat generation of multiple cable bodies during use.

[0040] Furthermore, after the sealing unit is removed, the surrounding plate can be manually opened to see the condition of the internal cable body. This allows for regular and better inspection of the internal cable body, observation of its condition, and sampling of desiccant particles to determine the moisture level inside the functional tube and protective tube. This prevents the cable body from being used in a humid environment for a long time. Thus, the functional tube has multiple functions such as heat dissipation, temperature measurement, and humidity detection.

[0041] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes and modifications can be made to the present invention without departing from the scope defined by the claims.

Claims

1. A power cable capable of multi-maintenance monitoring, characterized in that, It includes multiple cable bodies, multiple protective tubes, and multiple functional tubes. Each protective tube is passed through all the cable bodies, and each functional tube is passed through all the cable bodies. The multiple protective tubes and multiple functional tubes are distributed along the length of the cable bodies, and the protective tubes and functional tubes are distributed alternately. The inner sides of both ends of the protective tube have multiple annular protrusions; the functional tube includes a central tube and three partition units fixedly connected to the central tube. Each partition unit includes a radial block fixedly connected to the central tube, an arc-shaped surrounding plate fixedly connected to the radial block, and two insertion blocks respectively fixed to both ends of the radial block. The outer side of each insertion block has multiple arc-shaped protrusions. The insertion block is inserted into the end of an adjacent protective tube. One side of the surrounding plate has a strip-shaped protrusion, and the other side of the surrounding plate has a strip-shaped groove that mates with the strip-shaped protrusion. There are three cable bodies, with one cable body between two adjacent radial blocks. The power cable capable of multi-maintenance monitoring also includes a heat-conducting unit, which comprises a cylindrical block and three arc-shaped heat-conducting plates. Each heat-conducting plate is connected to a cylindrical block by a heat-conducting block, and each heat-conducting plate has one heat-conducting block on its inner side. The central tube has three through slots, with one through slot between two adjacent radial blocks. Each heat-conducting block passes through one of the through slots, and the cylindrical block is located inside the central tube. The three partition units are a heat dissipation partition unit, a temperature measurement partition unit, and a detection partition unit. The heat dissipation partition unit… It has two ventilation holes located on both sides of a cylindrical block, extending from the inner circumferential surface of the central tube to the outer surface of the surrounding plate; the cylindrical block has a temperature measuring groove, and the temperature measuring separation unit has a temperature measuring channel communicating with the temperature measuring groove, extending from the inner circumferential surface of the central tube to the outer surface of the surrounding plate; the radial block of the detection separation unit has a receiving groove, and the receiving groove has a filter screen unit for sealing the receiving groove, the receiving groove being filled with desiccant particles.

2. The power cable capable of multi-maintenance monitoring according to claim 1, characterized in that, The cable body comprises, from the outside to the inside, an outer sheath, an armor layer, and a flame-retardant layer. The flame-retardant layer contains multiple cable cores, each of which includes an insulation layer and a conductor.

3. The power cable capable of multi-maintenance monitoring according to claim 1, characterized in that, It also includes a sealing unit, which comprises two sealing rings, a strip sealing band connecting the two sealing rings, and three connecting sealing bands connecting the two sealing rings. The strip sealing band has a strip-shaped slit, thus dividing the strip sealing band into a first strip sealing band and a second strip sealing band. The second strip sealing band is connected to a strip-shaped protruding sealing band, which is bonded to the first strip sealing band with adhesive. The sealing rings are used to seal the connection position between the functional tube and the protective tube, and the connecting sealing bands are used to seal the connection position between two adjacent surrounding plates.

4. The power cable capable of multi-maintenance monitoring according to claim 1, characterized in that, The length of the insertion block is greater than or equal to half the length of the functional tube.

Images