High dielectric property cable for motor

Abstract

The invention provides a high-dielectric-property cable for a motor, and relates to the technical field of motor cables, the high-dielectric-property cable comprises a plurality of conductors, a plurality of supporting assemblies used for supporting the conductors are arranged among the conductors, a filler is arranged between the supporting assemblies and the conductors, and a wrapping tape, an armor and a cable sheath are sequentially arranged on the outer side of the filler. Internal heat can be led out through the metal reinforcing rods, the heat can be diffused through the extension metal rods, the heat dissipation area is increased, the armor is attached to the lower surfaces of the extension metal rods, the armor is made of metal materials, and therefore the internal heat of the extension metal rods can be led into the armor, the heat dissipation area is further increased, and the service life of the cable is prolonged. Therefore, the heat dissipation performance of the cable can meet the heating intensity of the conductor, the condition of heat accumulation is effectively avoided, the cable has high strength performance and high heat dissipation effect on the basis of the cable reinforcement function through the structure, and the cable performance is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor cables, and in particular to a high dielectric performance cable for a motor. Background Art

[0002] When the motor is in use, it is necessary to use a cable to transmit electricity, wherein the dielectric property is more important during power transmission, and the dielectric property refers to the property of the material showing the storage and loss of electrostatic energy under the action of the electric field. For example, the patent announcement number is CN213277539U, a tensile flame-retardant double-shielded electric-frequency motor cable, including an outer protective layer, the outer surface of the outer protective layer is fixedly connected with a flame-retardant layer, the outer surface of the flame-retardant layer is fixedly connected with an elastic layer, the inner side of the outer protective layer is fixedly connected with an outer shielding layer, and the inner side of the outer shielding layer is fixedly connected with an outer insulating layer. Through the coordinated use of the outer protective layer, the flame-retardant layer, the epoxy furan coating layer, the polytetrafluoroethylene coating layer, the elastic layer, the polyurethane resin layer, the polyethylene resin layer, the polypropylene coating layer, the outer shielding layer, the outer insulating layer, the inner shielding layer, the wrapping layer, the inner insulating layer and the conductor, the advantages of tensile flame-retardant function are achieved, and the existing electric-frequency motor cable does not have the tensile flame-retardant function when in use, and the electric-frequency motor cable is often easy to tear after being pulled, so as to affect the service life of the motor cable, and is therefore inconvenient for people to use.

[0003] Although the existing motor cables can ensure the dielectric properties during power transmission through the shielding structure, when used for a long time, the existing motor cables have too many internal structures, which will cause the internal heat to not be discharged to the outside in time when in the heating state, thereby causing heat accumulation inside the motor cable, resulting in a steady rise in the cable. The excessive temperature will affect the dielectric properties of the cable. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a high dielectric performance cable for motors, which solves the problem that the existing motor cables have poor heat dissipation ability after long-term use, resulting in heat accumulation inside the cables, which in turn causes the cable temperature to rise and its performance to deteriorate.

[0005] To achieve the above object, the technical solution adopted by the present invention is: A high dielectric performance cable for motors comprises a plurality of conductors, a plurality of support assemblies for supporting the conductors are arranged between the conductors, a filler is arranged between the support assemblies and the conductors, a wrapping tape, armor and a cable sheath are arranged in sequence on the outside of the filler, and a reinforcing core is commonly connected in the middle of the plurality of support assemblies.

[0006] Preferably, an insulating layer is arranged on the outside of each conductor, and a shielding layer is arranged on the outside of the insulating layer.

[0007] Preferably, the support assembly comprises a flexible skeleton, a plurality of extension frames are arranged outside the flexible skeleton, and a conductor is stored between every two extension frames.

[0008] Preferably, combination slots are respectively provided on both sides of the extension frame, a metal reinforcing rod is inserted into each combination slot, a heat-conducting protrusion is provided on the rod body of the metal reinforcing rod, and the surface of the heat-conducting protrusion is in contact with the shielding layer.

[0009] Preferably, the wrapping tape wraps around each metal reinforcement rod shaft, and each metal reinforcement rod shaft passes through the armor gap.

[0010] Preferably, an extended metal rod is fixedly mounted on the outer end of each metal reinforcement rod, and the lower surface of each extended metal rod is in contact with the armor.

[0011] Preferably, the surface of the cable sheath is provided with bending grooves, the bending grooves are located on both sides of the extended metal rod, and a reinforced connecting groove is provided between the bending grooves on both sides.

[0012] Preferably, the interior of each reinforced connecting groove is connected to the upper side of the extended metal rod.

[0013] Preferably, a series through hole is provided at the center of the flexible skeleton, a storage groove is provided on the inner wall of the series through hole, and a flexible ring is installed inside the storage groove.

[0014] Preferably, a first opening is provided on one side of the series through hole, and a second opening is provided on one side of the flexible collar.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The filler can avoid the situation where the internal gap between cables is too large, which leads to the loosening of the internal structure, thereby improving the integrity of the cable. The wrapping tape can wrap multiple conductors together with the supporting components to facilitate the subsequent addition of fillers and cooperate with the fillers to avoid structural loosening. The strength of the cable can be improved by armoring, and the armor is made of metal material, so that the heat dissipation can be accelerated with the heat conduction of the supporting components, further improving the heat dissipation capacity of the application and avoiding heat accumulation. The insulating layer and the shielding layer can avoid interference between multiple conductors and will not cause leakage problems, thereby improving the stability of the application.

[0016] 2. The conductor is placed between each two extension frames, and a metal reinforcing rod is installed in the combined card slot, so that the heat-conducting protrusion contacts the insulating layer and the shielding layer outside the conductor, thereby introducing the heat generated inside each individual conductor into the heat-conducting protrusions on the adjacent two sides, and then dissipating the heat outward through the metal reinforcing rod. Through the above structure, the heat generated by the conductor during the heating process under long-term use can be continuously guided outward, avoiding the problem of heat accumulation inside each conductor due to the inability to actively dissipate the heat, thereby causing the cable temperature to rise, so that the performance of the cable will not be affected by the temperature rise.

[0017] 3. The internal heat can be led outward through the metal reinforcement rod, and the extended metal rod can be used to diffuse the heat and increase the heat dissipation area. The lower surface of the extended metal rod is fitted with the armor, and the armor is also made of metal, so that the internal heat of the extended metal rod can be introduced into the armor, further increasing the heat dissipation area. Therefore, the heat dissipation performance of the present application meets the heating intensity of the conductor, effectively avoiding the occurrence of heat accumulation. The above structure is based on the function of cable reinforcement, so that the cable has both high strength performance and high heat dissipation effect.

[0018] 4. By extending the metal rod and clamping it inside the reinforced connection groove, and the metal reinforcement rod and clamping it inside the combined slot, the extended metal rod and the metal reinforcement rod have a certain strength of support performance, thereby improving the strength of the cable, and the bending groove can make the cable have a certain bending ability, further improving the service life of the cable.

[0019] 5. The flexible skeleton has certain deformation characteristics, so that the first opening can be opened and closed to a certain extent, so that the flexible skeleton can be directly stuck on the reinforcing core. When stuck in, the flexible skeleton is pressed and held, so that the flexible ring inside the storage groove can be bent to a certain extent, and then the flexible skeleton can be installed in the reinforcing core through the deformation of the flexible ring. The reinforcing core can prevent misalignment between multiple support components, which is beneficial to subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the present application; Figure 2 It is a top view structural schematic diagram of the present application; Figure 3 yes Figure 2 Schematic diagram of the cross-section structure at A-A in the middle; Figure 4 yes Figure 3 The enlarged structural diagram at a in the middle; Figure 5 yes Figure 2Schematic diagram of the cross-section structure at BB in the middle; Figure 6 yes Figure 2 Schematic diagram of the cross-section structure at CC; Figure 7 It is a schematic diagram of the three-dimensional structure of the support assembly; Figure 8 It is a top view structural schematic diagram of the support assembly; Fig. 9 yes Figure 8 Schematic diagram of the cross-section structure at DD; Fig.10 yes Fig. 9 The enlarged structural diagram at b in the middle; Fig.11 It is a schematic diagram of the internal three-dimensional structure of this application.

[0021] In the figure: 1. conductor; 101. insulation layer; 102. shielding layer; 2. cable sheath; 201. bending groove; 202. reinforced connection groove; 3. reinforcing core; 4. supporting assembly; 401. flexible skeleton; 4011. extension frame; 4012. combination card slot; 402. metal reinforcing rod; 4021. heat-conducting protrusion; 4022. extended metal rod; 403. series through hole; 4031. storage groove; 4032. flexible ring; 4033. second opening; 404. first opening; 5. filling material; 6. wrapping tape; 7. armor. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] like Figures 1 to 11 As shown, a high dielectric performance cable for motors includes a plurality of conductors 1, a plurality of support components 4 for supporting the conductors 1 are arranged between the plurality of conductors 1, a filler 5 is arranged between the support component 4 and the conductor 1, a wrapping tape 6, an armor 7 and a cable sheath 2 are arranged in sequence on the outside of the filler 5, and a reinforcing core 3 is commonly connected in the middle of the plurality of support components 4.

[0024] The filler 5 can avoid the situation where the internal gap between the cables is too large, which leads to the loosening of the internal structure, thereby improving the integrity of the cable. The wrapping tape 6 can wrap multiple conductors 1 together with the support component 4 to facilitate the subsequent addition of the filler 5 and cooperate with the filler 5 to avoid the loose structure. The strength of the cable can be improved by the armor 7, and the armor 7 is made of metal material, so that the heat dissipation can be accelerated in cooperation with the thermal conductivity of the support component 4, further improving the heat dissipation ability of the present application and avoiding heat accumulation.

[0025] In this embodiment, an insulating layer 101 is disposed outside each conductor 1, and a shielding layer 102 is disposed outside the insulating layer 101. The insulating layer 101 and the shielding layer 102 can avoid interference between multiple conductors 1 and prevent leakage problems, thereby improving the stability of the present application.

[0026] In this embodiment, the support assembly 4 includes a flexible skeleton 401, and a plurality of extension frames 4011 are arranged outside the flexible skeleton 401, and a conductor 1 is stored between every two extension frames 4011; Combination slots 4012 are respectively provided on both sides of the extension frame 4011 . A metal reinforcing rod 402 is inserted into each combination slot 4012 . The metal reinforcing rod 402 is provided with a heat-conducting protrusion 4021 . The surface of the heat-conducting protrusion 4021 is in contact with the shielding layer 102 .

[0027] In a specific configuration, the wrapping belt 6 bypasses the shaft of each metal reinforcement rod 402 , and the shaft of each metal reinforcement rod 402 passes through the gap in the armor 7 .

[0028] The conductor 1 is stored between every two extension frames 4011, and the metal reinforcement rod 402 is installed in the combined card slot 4012, so that the heat-conducting protrusion 4021 will contact the insulating layer 101 and the shielding layer 102 on the outside of the conductor 1, so that the heat generated inside each individual conductor 1 is respectively introduced into the heat-conducting protrusions 4021 on the adjacent two sides, and then the heat is dissipated outward through the metal reinforcement rod 402. Through the above structure, the heat generated by the conductor 1 during the heating process under long-term use can be continuously guided outward, avoiding the problem of heat accumulation inside each conductor 1 due to the inability to actively dissipate the heat, thereby causing the cable temperature to rise, so that the performance of the cable will not be affected by the temperature rise.

[0029] An extended metal rod 4022 is fixedly mounted on the outer end of each metal reinforcing rod 402 , and the lower surface of each extended metal rod 4022 is in contact with the armor 7 .

[0030] In order to further improve the heat dissipation performance of the cable, the internal heat can be led outward through the metal reinforcement rod 402, and the extended metal rod 4022 can be used to diffuse the heat to increase the heat dissipation area, and the lower surface of the extended metal rod 4022 is fitted with the armor 7, and the armor 7 is also made of metal, so that the internal heat of the extended metal rod 4022 can be introduced into the armor 7, further increasing the heat dissipation area, so that the heat dissipation performance of the present application meets the heating intensity of the conductor 1, effectively avoiding the occurrence of heat accumulation, and the above-mentioned structure is based on the function of cable reinforcement, so that the cable can have both high strength performance and high heat dissipation effect.

[0031] It should be noted that bending grooves 201 are provided on the surface of the cable sheath 2, and the bending grooves 201 are located on both sides of the extended metal rod 4022. Reinforced connecting grooves 202 are provided between the bending grooves 201 on both sides, and the interior of each reinforced connecting groove 202 is connected to the upper side of the extended metal rod 4022.

[0032] By extending the metal rod 4022 and clamping it inside the reinforced connecting groove 202, and the metal reinforcing rod 402 is clamped inside the combined clamping groove 4012, the extended metal rod 4022 and the metal reinforcing rod 402 have a certain strength of supporting performance, thereby improving the strength of the cable, and in combination with the bending groove 201, the cable can also have a certain bending ability, further improving the service life of the cable.

[0033] In the present application, a series through hole 403 is opened at the center of the flexible skeleton 401, a storage groove 4031 is opened on the inner wall of the series through hole 403, a flexible ring 4032 is installed inside the storage groove 4031, a first opening 404 is opened on one side of the series through hole 403, and a second opening 4033 is opened on one side of the flexible ring 4032.

[0034] By virtue of the certain deformation characteristics of the flexible skeleton 401, the first opening 404 can be opened and closed to a certain extent, so that the flexible skeleton 401 can be directly stuck on the reinforcing core 3. When stuck in, the flexible skeleton 401 is pressed again, so that the flexible ring 4032 inside the storage groove 4031 can be bent to a certain extent, and then the flexible skeleton 401 can be installed in the reinforcing core 3 through the deformation of the flexible ring 4032. The reinforcing core 3 can prevent the multiple support components 4 from being misaligned, which is beneficial for subsequent use.

[0035] Working principle of this high dielectric performance cable for electric motors: When in use, firstly, the conductor 1 is energized to transmit electricity, and during use, the conductor 1 will have a certain amount of heat, wherein the heat will extend outward from the insulating layer 101 and the shielding layer 102 in sequence, wherein the metal reinforcing rod 402 is installed in the combined card slot 4012, so that the heat-conducting protrusion 4021 will contact the insulating layer 101 and the shielding layer 102 outside the conductor 1, thereby respectively introducing the heat generated inside each individual conductor 1 into the heat-conducting protrusions 4021 on both adjacent sides, and then dissipating the heat outward through the metal reinforcing rod 402; Then, the internal heat can be led outward through the metal reinforcing rod 402, wherein the extended metal rod 4022 can diffuse the heat to increase the heat dissipation area, and the lower surface of the extended metal rod 4022 is attached to the armor 7, wherein the armor 7 is also made of metal, so that the internal heat of the extended metal rod 4022 can be introduced into the armor 7, further increasing the heat dissipation area, so that the heat dissipation performance of the present application meets the heating intensity of the conductor 1, and effectively avoids the occurrence of heat accumulation; During use, the extended metal rod 4022 is stuck in the reinforced connection groove 202, and the metal reinforcing rod 402 is stuck in the combined slot 4012, so that the extended metal rod 4022 and the metal reinforcing rod 402 have a certain strength of support performance.

[0036] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A high dielectric performance cable for a motor, comprising a plurality of conductors (1), characterized in that: A plurality of support components (4) for supporting the conductors (1) are arranged between the plurality of conductors (1), a filler (5) is arranged between the support component (4) and the conductor (1), a wrapping tape (6), an armor (7) and a cable sheath (2) are arranged in sequence on the outside of the filler (5), and a reinforcing core (3) is commonly connected in the middle of the plurality of support components (4).

2. A high dielectric performance cable for motors according to claim 1, characterized in that: An insulating layer (101) is arranged on the outside of each conductor (1), and a shielding layer (102) is arranged on the outside of the insulating layer (101).

3. A high dielectric performance cable for motors according to claim 2, characterized in that: The support assembly (4) comprises a flexible skeleton (401), a plurality of extension frames (4011) are arranged outside the flexible skeleton (401), and a conductor (1) is stored between every two extension frames (4011).

4. A high dielectric performance cable for motors according to claim 3, characterized in that: Combination slots (4012) are respectively provided on both sides of the extension frame (4011), a metal reinforcing rod (402) is inserted into each combination slot (4012), a heat-conducting protrusion (4021) is provided on the rod body of the metal reinforcing rod (402), and the surface of the heat-conducting protrusion (4021) is in contact with the shielding layer (102).

5. A high dielectric performance cable for motors according to claim 4, characterized in that: The wrapping belt (6) wraps around the shaft of each metal reinforcement rod (402), and the shaft of each metal reinforcement rod (402) passes through a gap in the armor (7).

6. A high dielectric performance cable for motors according to claim 4, characterized in that: An extension metal rod (4022) is fixedly mounted on the outer end of each metal reinforcement rod (402), and the lower surface of each extension metal rod (4022) is in contact with the armor (7).

7. A high dielectric performance cable for motors according to claim 6, characterized in that: The surface of the cable sheath (2) is provided with a bending groove (201), the bending groove (201) is located on both sides of the extended metal rod (4022), and a reinforced connection groove (202) is provided between the bending grooves (201) on both sides.

8. A high dielectric performance cable for motors according to claim 7, characterized in that: The interior of each reinforced connection groove (202) is connected to the upper side of the extended metal rod (4022).

9. A high dielectric performance cable for motors according to claim 3, characterized in that: A series through hole (403) is provided at the center of the flexible skeleton (401), a storage groove (4031) is provided on the inner wall of the series through hole (403), and a flexible collar (4032) is installed inside the storage groove (4031).

10. A high dielectric performance cable for motors according to claim 9, characterized in that: A first opening (404) is provided on one side of the series through hole (403), and a second opening (4033) is provided on one side of the flexible collar (4032).

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