A control cable capable of realizing internal temperature measurement

Abstract

The present application discloses a control cable capable of internal temperature measurement, comprising a cable body and two end units, the two end units being located at both ends of the cable body. The control cable of the present application, the end units can locate the positions of multiple cable cores, thereby making it easier to connect two control cables, or to connect a control cable to a cable connector. Internal temperature measurement can be achieved. On the one hand, the temperature of the center of the control cable can be measured. On the other hand, the temperature of the surrounding ring can be detected at multiple locations, thereby determining whether the temperature at each location of the control cable is uniform or whether the temperature is too high. Sealing of the end units and the cable body can be achieved, as well as detection of the sealing effect.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and more particularly to a control cable capable of realizing internal temperature measurement. Background Art

[0002] Control cables connect various electrical appliances, instruments, meters, and automatic devices, transmitting electrical signals for startup, operation, control, signal display, and measurement. They are widely used in control, measurement, signal transmission, alarm, and interlocking systems in industrial and mining enterprises, substations, transportation, and scientific and technological sectors.

[0003] Existing control cables often require significant time and effort to align and secure due to a lack of precise cable core positioning during connection. This not only increases connection difficulty but can also lead to signal transmission issues or safety hazards due to improper connection. Temperature measurement in some control cables is often limited to a single location or localized area, failing to fully reflect the temperature distribution within the cable. This can lead to misjudgment of the cable's temperature status, compromising its safe operation. Some control cables also often lack sealing between the end units and the cable itself, impacting cable performance and service life. Summary of the Invention

[0004] The present invention aims to overcome the defects of the prior art and provide a control cable capable of realizing internal temperature measurement.

[0005] In order to achieve the above-mentioned objectives, the present invention provides the following technical solutions: a control cable, comprising a cable body and two end units, the two end units are respectively located at both ends of the cable body, the cable body comprises an outer sheath, a shielding layer and a wrapping layer from the outside to the inside, the wrapping layer has a plurality of cable cores, the cable core comprises an insulating layer and a conductor from the outside to the inside; the end unit comprises a wrapping portion and a positioning portion connected to the wrapping portion, the wrapping portion surrounds the outer sheath, the positioning portion has a plurality of insertion channels, the number of the insertion channels is equal to the number of the cable cores, and each cable core passes through one of the insertion channels.

[0006] Furthermore, the multiple insertion channels include a central insertion channel, a circle of first insertion channels, a circle of second insertion channels and a circle of third insertion channels. The circle of first insertion channels has 6 channels and is evenly spaced in a ring shape, the circle of second insertion channels has 12 channels and is evenly spaced in a ring shape, and the circle of third insertion channels has 18 channels and is evenly spaced in a ring shape.

[0007] Thereby, the positions of multiple cable cores can be positioned.

[0008] Furthermore, the shielding layer is a copper wire braided shielding layer, the insulating layer is a polyethylene insulating layer, the wrapping layer is a flame retardant tape wrapping layer, and the conductor is a copper conductor.

[0009] Furthermore, the side wall of the first insertion channel has a first accommodating groove, the side wall of the second insertion channel has a second accommodating groove, and the side wall of the third insertion channel has a third accommodating groove; the positioning portion is made of plastic, and the positioning portion is covered with a heat conducting unit, and the heat conducting unit includes an enclosing ring, a first heat conducting unit, 6 second heat conducting units and 6 third heat conducting units, the 6 second heat conducting units are distributed in a ring with equal spacing, the 6 third heat conducting units are distributed in a ring with equal spacing, and the 6 second heat conducting units and the 6 third heat conducting units are distributed alternately; the first heat conducting unit includes a barrel located in the central insertion channel, a first heat conducting plate connected to the barrel, and a second heat conducting plate connected to the first heat conducting plate, a first temperature sensor is installed at the second heat conducting plate, the enclosing ring has a first strip through-groove, the first heat conducting plate passes through the first strip through-groove, and an insulating sleeve is installed between the first heat conducting plate and the first strip through-groove; the second heat conducting unit includes a first arc panel located in the first accommodating groove, a first arc panel connected to the first arc panel a first connecting plate connected to the surrounding ring, a second arc panel located in the second accommodating groove, a second connecting plate connected to the second arc panel, a third arc panel located in the third accommodating groove, a third connecting plate connected to the third arc panel, a heat-conducting connecting plate, and a first connecting block connecting the surrounding ring and the third connecting plate, wherein the heat-conducting connecting plate is fixedly connected to the first connecting plate, the second connecting plate, and the third connecting plate; the third heat-conducting unit includes a fourth arc panel located in the second accommodating groove, two fifth arc panels located in the third accommodating groove, and a second connecting block connected to the surrounding ring, a fourth connecting plate is connected between the fourth arc panel and the second connecting block, and a fifth connecting plate is connected between the two fifth arc panels and the second connecting block; six second temperature sensors are installed at equal intervals in a ring at the surrounding ring; the positioning part is cylindrical, and a control box is provided on the circumferential surface of the positioning part, a control unit and a wireless communication unit are installed in the control box, and the wires of the first temperature sensor and the six second temperature sensors are all connected to the control unit.

[0010] Furthermore, the wires of the first temperature sensor and the six second temperature sensors are all covered by the positioning portion.

[0011] This protects the wires of the temperature sensor.

[0012] Furthermore, the wrapping portion includes a first annular cylindrical wrapping plate connected to the positioning portion, a first annular end plate connected to the first wrapping plate, a second annular cylindrical wrapping plate connected to the first end plate, a second annular end plate connected to the second wrapping plate, and a third annular cylindrical wrapping plate connected to the second end plate, and there is sealant between the third wrapping plate and the outer sheath of the cable body; an annular accommodating space is formed between the first end plate, the second wrapping plate and the second end plate, and the annular accommodating space is filled with water-absorbing particles; a connecting pipe portion is also installed at the circumferential surface of the positioning portion, and the connecting pipe portion connects the space inside the control box and the annular accommodating space, and a humidity sensor connected to the control unit is also installed in the space inside the control box.

[0013] This makes it possible to detect whether the end unit and the cable body are sealed.

[0014] Furthermore, the surrounding ring, the cylinder, the first heat conducting plate, the second heat conducting plate, the first arc panel, the second arc panel, the third arc panel, the first connecting plate, the second connecting plate, the third connecting plate, the heat conducting connecting plate, the first connecting block, the fourth arc panel, the fifth arc panel, the fourth connecting plate, the fifth connecting plate and the second connecting block are all made of copper-aluminum alloy.

[0015] As a result, the thermal conductivity is good, and the temperature measurement is more accurate.

[0016] Furthermore, the thermal insulation sleeve is made of rubber material, and includes an insert block located in the first strip-shaped through groove and a pad connected to the insert block and abutting the surrounding ring. The thermal insulation sleeve has a second strip-shaped through groove that passes through the insert block and the pad block and is passed through by the first heat conducting plate.

[0017] Thus, the heat insulating sleeve can prevent the second heat conducting plate and the surrounding ring from interfering with each other.

[0018] Furthermore, a control box cover is installed at the control box.

[0019] Furthermore, the control box has a sealing gasket in the form of a rectangular frame abutted by the control box.

[0020] Furthermore, the control box cover and the control box are fixedly connected by bolts.

[0021] Furthermore, a filter portion is installed at the connection between the communicating pipe portion and the control box.

[0022] Furthermore, the filter part and the control box are connected by bolts.

[0023] The filter part can thus prevent water-absorbing particles from entering the control box.

[0024] Beneficial effects:

[0025] 1. The end unit of the control cable of the present application can realize the positioning of the positions of multiple cable cores, thereby making it more convenient to connect two control cables, or to connect a control cable and a cable connector.

[0026] 2. The control cable of the present application can realize internal temperature measurement. On the one hand, it can realize temperature measurement of the center position of the control cable, and on the other hand, it can detect the temperature at multiple positions of the surrounding ring, so as to judge whether the temperature at each position of the control cable is uniform or whether the temperature is too high.

[0027] 3. The control cable of the present application can achieve sealing of the end unit and the cable body, as well as detection of the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the separation of cable components;

[0029] Figure 2 This is an enlarged view of area A;

[0030] Figure 3 This is an enlarged view of area B;

[0031] Figure 4 Another perspective diagram of separating the components of the cable;

[0032] Figure 5 This is an enlarged view of area C;

[0033] Figure 6 This is an enlarged view of area D;

[0034] Figure 7 The heat-insulating sleeve is installed in the first strip-shaped through groove, and the cable diagram;

[0035] Figure 8 This is an enlarged view of area E;

[0036] Figure 9 The heat transfer unit is located in the positioning part, and the cable diagram;

[0037] Figure 10 This is an enlarged view of area F;

[0038] Figure 11 A schematic diagram of the cable.

[0039] Explanation of reference numerals: cable body 1; outer sheath 1.1; shielding layer 1.2; wrapping layer 1.3; insulating layer 1.4; conductor 1.5; wrapping portion 2; first wrapping plate 2.1; first end plate 2.2; second wrapping plate 2.3; second end plate 2.4; third wrapping plate 2.5; positioning portion 3; central insertion channel 3.1; first insertion channel 3.2; second insertion channel 3.3; third insertion channel 3.4; first receiving groove 3.5; second receiving groove 3.6; third receiving groove 3.7; surrounding ring 4; barrel 5.1; first heat conducting plate 5.2; second Heat conducting plate 5.3; first temperature sensor 5.4; first curved panel 6.1; first connecting plate 6.2; second curved panel 6.3; second connecting plate 6.4; third curved panel 6.5; third connecting plate 6.6; heat conducting connecting plate 6.7; first connecting block 6.8; fourth curved panel 7.1; fifth curved panel 7.2; second connecting block 7.3; fourth connecting plate 7.4; fifth connecting plate 7.5; second temperature sensor 8; control box 9; control unit 9.1; control box cover 9.2; connecting pipe 10; thermal insulation sleeve 11; insert block 11.1; spacer block 11.2. DETAILED DESCRIPTION

[0040] 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.

[0041] The present invention provides a control cable capable of realizing internal temperature measurement as shown in the figure, comprising a cable body 1 and two end units, the two end units being respectively located at both ends of the cable body 1, the cable body 1 comprising, from the outside to the inside, an outer sheath 1.1, a shielding layer 1.2 and a wrapping layer 1.3, the wrapping layer 1.3 having a plurality of cable cores, the cable cores comprising, from the outside to the inside, an insulating layer 1.4 and a conductor 1.5; the end unit comprises a wrapping portion 2 and a positioning portion 3 connected to the wrapping portion 2, the wrapping portion 2 surrounding the outer sheath 1.1, the positioning portion 3 having a plurality of insertion channels, the number of the insertion channels being equal to the number of the cable cores, and each cable core passing through one of the insertion channels. The plurality of insertion channels includes a central insertion channel 3.1, a circle of first insertion channels 3.2, a circle of second insertion channels 3.3, and a circle of third insertion channels 3.4. The circle of first insertion channels 3.2 has six equally spaced insertion channels, the circle of second insertion channels 3.3 has twelve equally spaced insertion channels, and the circle of third insertion channels 3.4 has eighteen equally spaced insertion channels. The shielding layer 1.2 is a braided copper wire shielding layer, the insulating layer 1.4 is a polyethylene insulation layer, the wrapping layer 1.3 is a flame-retardant tape wrapping layer, and the conductor 1.5 is a copper conductor.

[0042] The side wall of the first insertion channel 3.2 has a first accommodating groove 3.5, the side wall of the second insertion channel 3.3 has a second accommodating groove 3.6, and the side wall of the third insertion channel 3.4 has a third accommodating groove 3.7; the positioning portion 3 is made of plastic, and the positioning portion 3 is covered with a heat-conducting unit, which includes an enclosing ring 4, a first heat-conducting unit, 6 second heat-conducting units and 6 third heat-conducting units, the 6 second heat-conducting units are distributed in a circular manner with equal spacing, the 6 third heat-conducting units are distributed in a circular manner with equal spacing, and the 6 second heat-conducting units and the 6 third heat-conducting units are distributed alternately; the first heat-conducting unit includes a heat-conducting unit located at The central insertion channel 3.1 comprises a barrel portion 5.1, a first heat conducting plate 5.2 connected to the barrel portion 5.1, and a second heat conducting plate 5.3 connected to the first heat conducting plate 5.2. A first temperature sensor 5.4 is mounted on the second heat conducting plate 5.3. The surrounding ring 4 comprises a first strip-shaped through-slot, through which the first heat conducting plate 5.2 passes. An insulating sleeve 11 is mounted between the first heat conducting plate 5.2 and the first strip-shaped through-slot. The second heat conducting unit comprises a first curved plate 6.1 located within the first receiving groove 3.5, a first connecting plate 6.2 connected to the first curved plate 6.1, and a first connecting plate 6.3 located within the second receiving groove 3.5. 6, a second curved panel 6.3 in the interior, a second connecting plate 6.4 connected to the second curved panel 6.3, a third curved panel 6.5 located in the third receiving groove 3.7, a third connecting plate 6.6 connected to the third curved panel 6.5, a heat-conducting connecting plate 6.7, and a first connecting block 6.8 connecting the surrounding ring 4 and the third connecting plate 6.6, wherein the heat-conducting connecting plate 6.7 is fixedly connected to the first connecting plate 6.2, the second connecting plate 6.4, and the third connecting plate 6.6; the third heat-conducting unit includes a fourth curved panel 7.1 located in the second receiving groove 3.6, two fifth curved panels 7.2 located in the third receiving groove 3.7, and A second connecting block 7.3 is connected to the encircling ring 4, a fourth connecting plate 7.4 is connected between the fourth arc panel 7.1 and the second connecting block 7.3, and a fifth connecting plate 7.5 is connected between the two fifth arc panels 7.2 and the second connecting block 7.3; six second temperature sensors 8 are installed on the encircling ring 4 and are distributed in a ring-shaped manner with equal intervals; the positioning portion 3 is cylindrical, and a control box 9 is provided on the circumferential surface of the positioning portion 3, in which a control unit 9.1 and a wireless communication unit are installed, and the wires of the first temperature sensor 5.4 and the six second temperature sensors 8 are all connected to the control unit 9.1.The wrapping part 2 includes a first annular cylindrical wrapping plate 2.1 connected to the positioning part 3, a first annular end plate 2.2 connected to the first wrapping plate 2.1, a second annular cylindrical wrapping plate 2.3 connected to the first end plate 2.2, a second annular end plate 2.4 connected to the second wrapping plate 2.3 and a third annular cylindrical wrapping plate 2.5 connected to the second end plate 2.4, and there is sealant between the third wrapping plate 2.5 and the outer sheath 1.1 of the cable body 1; an annular accommodating space is formed between the first end plate 2.2, the second wrapping plate 2.3 and the second end plate 2.4, and the annular accommodating space is filled with water-absorbing particles; a connecting pipe part 10 is also installed on the circumferential surface of the positioning part 3, and the connecting pipe part 10 connects the space inside the control box 9 and the annular accommodating space, and a humidity sensor connected to the control unit 9.1 is also installed in the space inside the control box 9.

[0043] The surrounding ring 4, the cylindrical portion 5.1, the first heat conducting plate 5.2, the second heat conducting plate 5.3, the first curved panel 6.1, the second curved panel 6.3, the third curved panel 6.5, the first connecting plate 6.2, the second connecting plate 6.4, the third connecting plate 6.6, the heat conducting connecting plate 6.7, the first connecting block 6.8, the fourth curved panel 7.1, the fifth curved panel 7.2, the fourth connecting plate 7.4, the fifth connecting plate 7.5, and the second connecting block 7.3 are all made of a copper-aluminum alloy. The thermal insulation sleeve 11 is made of a rubber material and includes an insert 11.1 positioned within the first strip-shaped through-slot and a pad 11.2 connected to the insert 11.1 and abutting the surrounding ring 4. The thermal insulation sleeve 11 has a second strip-shaped through-slot that passes through the insert 11.1 and the pad 11.2 and is passed through by the first heat conducting plate 5.2. A control box cover 9.2 is installed at the control box 9. The control box 9 has a rectangular frame sealing gasket abutted by the control box 9. The control box cover 9.2 and the control box 9 are fixedly connected by bolts; a filter part is installed at the connection between the connecting pipe part 10 and the control box 9 (the filter part is not drawn in the figure).

[0044] Working principle: As shown in the figure, the end unit of the present application can cooperate with multiple cable cores to locate the positions of multiple cable cores, thereby facilitating the connection between two control cables, or the connection between the control cable and the cable connector.

[0045] During manufacturing, the heat transfer unit is first fabricated. It is then encapsulated by integral injection molding to form the positioning and encapsulation sections. The encapsulation section is inserted into the end of the cable body, and the two are sealed with sealant. The filter section is then removed, and water-absorbing particles are injected through the connecting tube. The filter section is then installed, and the control box cover is closed. If a gap forms between the encapsulation section and the cable body, and moisture enters and exceeds the adsorption capacity of the water-absorbing particles, it is detected by a humidity sensor, thereby verifying the tight connection between the end unit and the cable body.

[0046] The barrel surrounds the cable core in the central insertion channel, and each of the cable cores in the first, second, and third insertion channels is abutted by an arc-shaped plate. This allows the temperature of the cable core in the central insertion channel to be transferred to the second heat-conducting plate. A thermal insulation sleeve is also provided between the second heat-conducting plate and the surrounding ring to minimize mutual interference. The temperatures of the cable cores in the first, second, and third insertion channels are transferred to the surrounding ring, allowing six second temperature sensors to measure the temperature at the surrounding ring. This allows for detection of excessive temperatures at the center of the control cable and at each cable core, as well as for detection of excessive temperature differences at various locations across the cable core cross-section.

[0047] 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 control cable capable of achieving internal temperature measurement, characterized in that: The cable comprises a cable body and two end units, the two end units being located at both ends of the cable body, the cable body comprising, from the outside to the inside, an outer sheath, a shielding layer, and a wrapping layer, the wrapping layer containing a plurality of cable cores, and the cable cores comprising, from the outside to the inside, an insulating layer and a conductor; the end unit comprises a wrapping portion and a positioning portion connected to the wrapping portion, the wrapping portion surrounding the outer sheath, the positioning portion having a plurality of insertion channels, the number of the insertion channels being equal to the number of the cable cores, and each cable core passing through one of the insertion channels; The plurality of insertion channels include a central insertion channel, a circle of first insertion channels, a circle of second insertion channels, and a circle of third insertion channels. The circle of first insertion channels has 6 channels and is distributed in a circular pattern with equal spacing. The circle of second insertion channels has 12 channels and is distributed in a circular pattern with equal spacing. The circle of third insertion channels has 18 channels and is distributed in a circular pattern with equal spacing. The side wall of the first insertion channel has a first receiving groove, the side wall of the second insertion channel has a second receiving groove, and the side wall of the third insertion channel has a third receiving groove; The positioning portion is made of plastic, and the positioning portion is covered with a heat-conducting unit, and the heat-conducting unit includes an enclosing ring, a first heat-conducting unit, 6 second heat-conducting units and 6 third heat-conducting units, the 6 second heat-conducting units are distributed in a ring with equal spacing, the 6 third heat-conducting units are distributed in a ring with equal spacing, and the 6 second heat-conducting units and the 6 third heat-conducting units are distributed alternately; the first heat-conducting unit includes a barrel located in the central insertion channel, a first heat-conducting plate connected to the barrel, and a second heat-conducting plate connected to the first heat-conducting plate, a first temperature sensor is installed at the second heat-conducting plate, the enclosing ring has a first strip through-groove, the first heat-conducting plate passes through the first strip through-groove, and an insulating sleeve is installed between the first heat-conducting plate and the first strip through-groove; the second heat-conducting unit includes a first arc panel located in the first accommodating groove, a first connecting plate connected to the first arc panel, a second arc panel located in the second accommodating groove, and a first connecting plate connected to the second arc panel. A second connecting plate, a third arc panel located in the third accommodating groove, a third connecting plate connected to the third arc panel, a heat-conducting connecting plate, and a first connecting block connecting the surrounding ring and the third connecting plate, wherein the heat-conducting connecting plate is fixedly connected to the first connecting plate, the second connecting plate, and the third connecting plate; the third heat-conducting unit includes a fourth arc panel located in the second accommodating groove, two fifth arc panels located in the third accommodating groove, and a second connecting block connected to the surrounding ring, a fourth connecting plate is connected between the fourth arc panel and the second connecting block, and a fifth connecting plate is connected between the two fifth arc panels and the second connecting block; 6 second temperature sensors distributed in an annular manner with equal intervals are installed at the surrounding ring; the positioning portion is cylindrical, and a control box is provided at the circumferential surface of the positioning portion, and a control unit and a wireless communication unit are installed in the control box, and the wires of the first temperature sensor and the 6 second temperature sensors are all connected to the control unit.

2. The control cable capable of achieving internal temperature measurement according to claim 1, characterized in that: The shielding layer is a copper wire braided shielding layer, the insulating layer is a polyethylene insulating layer, the wrapping layer is a flame retardant tape wrapping layer, and the conductor is a copper conductor.

3. The control cable capable of achieving internal temperature measurement according to claim 1, characterized in that: The wrapping portion includes a first annular cylindrical wrapping plate connected to the positioning portion, a first annular end plate connected to the first wrapping plate, a second annular cylindrical wrapping plate connected to the first end plate, a second annular end plate connected to the second wrapping plate, and a third annular cylindrical wrapping plate connected to the second end plate, and there is sealant between the third wrapping plate and the outer sheath of the cable body; an annular accommodating space is formed between the first end plate, the second wrapping plate and the second end plate, and the annular accommodating space is filled with water-absorbing particles; a connecting pipe portion is also installed at the circumferential surface of the positioning portion, and the connecting pipe portion connects the space inside the control box and the annular accommodating space, and a humidity sensor connected to the control unit is also installed in the space inside the control box.

4. The control cable capable of realizing internal temperature measurement according to claim 1, characterized in that: The surrounding ring, the cylinder, the first heat conducting plate, the second heat conducting plate, the first arc panel, the second arc panel, the third arc panel, the first connecting plate, the second connecting plate, the third connecting plate, the heat conducting connecting plate, the first connecting block, the fourth arc panel, the fifth arc panel, the fourth connecting plate, the fifth connecting plate and the second connecting block are all made of copper-aluminum alloy.

5. The control cable capable of achieving internal temperature measurement according to claim 1, characterized in that: The thermal insulation sleeve is made of rubber material and includes an insert block located in the first strip-shaped through groove and a pad connected to the insert block and abutting the surrounding ring. The thermal insulation sleeve has a second strip-shaped through groove that passes through the insert block and the pad block and is passed through by the first heat conducting plate.

6. The control cable capable of realizing internal temperature measurement according to claim 3, characterized in that: The control box is provided with a control box cover, the control box has a rectangular frame sealing gasket abutted by the control box, the control box cover and the control box are fixedly connected by bolts; a filter part is provided at the connection between the connecting pipe part and the control box.

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