CN207264816U - A kind of modified power transmission cable - Google Patents

Abstract

The utility model discloses an improved power transmission cable, which comprises a conductor and an insulation system. A waterproof layer and a silicone anti-pressure layer are successively arranged between the conductor and the insulation system. The outer periphery of the insulation system is provided with a shielding layer. The sheath; the conductor and its outer peripheral layers of cylindrical structures except the sheath extend in the sheath along the extension direction of the sheath in the form of a cylindrical helix, and a tensile rope is provided in the sheath, and the tensile The rope passes through the center of all radial sections in the sheath; three grooves are evenly spaced along the circumferential direction in the sheath, and the grooves all extend in parallel with the sheath, and the grooves are at the opening of the outer wall of the sheath All are equipped with sealing strips. The conductor of the utility model extends in a spiral form, and any bending of the power transmission cable can only cause slight bending of the conductor. The power transmission cable has excellent durability against twisting and can also maintain shielding performance.

Description

An improved transmission cable

technical field

The utility model belongs to the technical field of electricity, in particular to an improved power transmission cable.

Background technique

In order not to leak the electric field and magnetic field generated from the conductor to the outside during power transmission, a shielding layer is provided on the power transmission cable. In a reciprocating system such as a straight-line motor or an elevator, the power transmission cable connected to the power element needs to be bent repeatedly, because the bending resistance of the conductor in the power transmission cable is much smaller than that of the insulating jacket, so Electrical conductors experience metal fatigue after repeated bending, which eventually breaks and has a limited useful life. However, replacing all transmission cables in a reciprocating system results in equipment downtime.

Utility model content

The purpose of this utility model is to provide an improved power transmission cable in order to overcome the above-mentioned deficiencies in the prior art. The conductor of the utility model extends in a spiral form, and any bending of the power transmission cable can only cause slight bending of the conductor. The power transmission cable has excellent durability against twisting and can also maintain shielding performance.

In order to achieve the above object, the utility model adopts the following technical solutions:

An improved power transmission cable, comprising a conductor and an insulation system, a waterproof layer and a silicone pressure-resistant layer are sequentially provided between the conductor and the insulation system, a shielding layer is provided on the periphery of the insulation system, and a sheath is provided on the periphery of the shielding layer; The insulation system includes a first semiconductive layer, a second semiconductive layer and an insulating layer between the two, wherein the first semiconductive layer is arranged on the outer periphery of the silicone pressure-resistant layer; the conductor and its outer periphery except for the sheath Each layer of cylindrical structure extends in the sheath along the extension direction of the sheath in the form of a cylindrical helix, and a tensile rope is arranged in the sheath, and the tensile rope passes through the center of all radial sections in the sheath; Three grooves are evenly spaced in the sheath along the circumferential direction, and the grooves all extend in parallel with the sheath, and the grooves are provided with sealing strips at the openings of the outer wall of the sheath.

Preferably, each of the sealing strips includes a microporous structure.

Preferably, the diameter of the cylindrical structure of the cylindrical helix is smaller than the diameter of the sheath.

Preferably, there is at least one conductor.

Preferably, the radial section of the conductor is circular.

Preferably, the tensile rope is a steel wire or a fiber rope.

Preferably, a rat repellent is provided in the groove, which can solve the technical problem in the prior art that the power transmission cable is easily bitten by rats and causes power failure.

The beneficial effects of the utility model are:

In the utility model, in the power transmission cable, the conductor in the sheath extends in a spiral form, and any bending of the power transmission cable can only cause slight bending of the conductor, which greatly prolongs the service life of the conductor. The tensile rope set in the center of the sheath can bear the tension of the transmission cable in the length direction and prevent the pitch of the conductor from being accidentally elongated.

Description of drawings

Fig. 1 is the sectional view of the transmission cable of the present utility model and the longitudinal direction;

Fig. 2 is a structural representation of the utility model;

1. Conductor, 2. Waterproof layer, 3. Silicone anti-pressure layer, 4. First semiconducting layer, 5. Insulating layer, 6. Second semiconducting layer, 7. Shielding layer, 8. Sheath, 9. Sealing strip, 10. Groove, 11. Tension-resistant rope.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

As shown in Figure 1-2, an improved power transmission cable includes a conductor 1 and an insulation system. A waterproof layer 2 and a silicone pressure-resistant layer 3 are arranged between the conductor 1 and the insulation system in sequence, and a shield is provided on the outer periphery of the insulation system. Layer 7, a sheath 8 is provided on the outer periphery of the shielding layer 7; the insulation system includes a first semiconductive layer 4, a second semiconductive layer 6 and an insulating layer 5 between the two, wherein the first semiconductive layer 4 is provided On the outer periphery of the silicone pressure-resistant layer 3; the conductor 1 and its outer peripheral layers of cylindrical structures except the sheath 8 extend in the sheath 8 along the extension direction of the sheath 8 in the form of a cylindrical helix, and in the sheath 8 There is a tension rope 11 inside, and the tension rope 11 passes through the center of all radial sections in the sheath 8; three grooves 10 are evenly spaced along the circumferential direction in the sheath 8, and the grooves 10 Both extend in parallel with the sheath 8 , and the grooves 10 are provided with sealing strips 9 at openings on the outer side walls of the sheath 8 .

On the basis of the above technical solutions, the sealing strips 9 all include a microporous structure.

On the basis of the above technical solution, the diameter of the cylindrical structure of the cylindrical helix is smaller than the diameter of the sheath 8 .

On the basis of the above technical solution, there is at least one conductor 1 .

On the basis of the above technical solution, the radial section of the conductor 1 is circular.

On the basis of the above technical solution, the tensile rope 11 is a steel wire or a fiber rope.

On the basis of the above technical solution, the groove 10 is provided with a rat repellant, which can solve the technical problem in the prior art that the power transmission cable is easily bitten by rats and causes a power failure.

The conductor 1 in the power transmission cable extends in a spiral form, and any bending of the power transmission cable can only make the conductor 1 slightly bend, which greatly prolongs the service life of the conductor 1; the tensile rope 11 set in the center of the sheath 8 can carry the power transmission The tensile force on the cable in the length direction prevents the pitch of conductor 1 from being accidentally elongated. The outer periphery of the waterproof layer 2 is provided with a silicone anti-pressure layer 3. Through the characteristics of deformation and extension of the silicone after the primary pressure, the pressure becomes the internal stress of the silicone anti-pressure layer 3, which reduces the pressure received by the conductor 1 and improves the compression resistance of the transmission cable.

For the limitation of the protection scope of the present utility model, those skilled in the art should understand that on the basis of the technical solution of the present utility model, various modifications or deformations that those skilled in the art can make without creative labor are still within the scope of the present utility model. within the scope of protection.

Claims (7)

1. An improved power transmission cable, characterized in that: it comprises a conductor and an insulation system, a waterproof layer and a silicone pressure-resistant layer are successively provided between the conductor and the insulation system, a shielding layer is provided on the periphery of the insulation system, and a shielding layer is provided on the periphery of the shielding layer. There is a sheath; the insulation system includes a first semiconductive layer, a second semiconductive layer and an insulating layer between the two, wherein the first semiconductive layer is arranged on the outer periphery of the silicone pressure-resistant layer; the conductor and its The cylindrical structure of each layer except the sheath on the outer periphery extends along the extension direction of the sheath in the form of a cylindrical helix, and a tensile rope is arranged in the sheath, and the tensile rope passes through all radial directions in the sheath. The center of the cross-section; three grooves are evenly spaced along the circumferential direction in the sheath, and the grooves all extend in parallel with the sheath, and the grooves are provided with a sealing strip at the opening of the outer wall of the sheath. 2. An improved power transmission cable according to claim 1, characterized in that: said sealing strips all include a microporous structure. 3. An improved power transmission cable according to claim 1, characterized in that: the diameter of the cylindrical structure of the cylindrical helix is smaller than the diameter of the sheath. 4. An improved power transmission cable according to claim 1, characterized in that there is at least one conductor. 5. An improved power transmission cable according to claim 1, characterized in that: the radial section of the conductor is circular. 6. An improved power transmission cable according to claim 1, characterized in that: the tensile rope is a steel wire or a fiber rope. 7. An improved power transmission cable according to claim 1, characterized in that: a rat repellent is provided in the groove.