CN110634612A - A non-magnetic material armored XLPE insulated power cable - Google Patents

Abstract

The invention discloses a non-magnetic material armored cross-linked polyethylene insulated power cable, which includes a clamp, a cable body, an ear plate, a mounting hole, a fixing bolt, a first connecting plate, a second connecting plate, a fixing nut, and a connecting ring , card slot, first connection hole, second connection hole, through hole, sealing gasket, outer sheath, non-magnetic tape, flame retardant layer, tensile layer, inner cushion layer, insulating layer and circular conductor. The circular conductor adopts a circular non-compressed structure, which is used to increase the outer diameter of the cable, improve the bending performance of the cable and the outer diameter of the cable, so that the cable can achieve better heat dissipation during use; the non-magnetic material can be stainless steel Strip, aluminum alloy strip, aluminum strip or pure copper strip, etc. The non-magnetic strip is a double-layer gap wrapping structure, which can reduce the generation of eddy current when the alternating current passes repeatedly, thereby reducing the heat; it is fixed by the ear plate At the connection point, the sealing gasket is used to improve the sealing performance of the connection point and prolong the service life.

Description

A non-magnetic material armored XLPE insulated power cable

technical field

The invention relates to a power cable, in particular to a non-magnetic material armored cross-linked polyethylene insulated power cable, which belongs to the technical field of power cable applications.

Background technique

It has been more than a hundred years since the American inventor Edison invented the first cable in 1879. With the application of electric energy more and more widely, the industry has also achieved rapid development; with the rapid development of industry, high-power stand-alone equipment has also More and more, in our country, stand-alone equipment with a rated voltage of 0.38KV and a power of 500KW or even higher is becoming more and more common, and the cable specifications are getting larger and larger. Considering the difficulty of construction and the construction environment, most of them are directly buried. Cable tray or cable trench for cable laying, so there is a certain demand for single-core steel tape armored cables.

In the prior art, ordinary steel tape armored cables use galvanized steel tape, which is a magnetic material. This kind of cable will generate an induced current when the alternating current passes repeatedly, which will cause the steel tape to heat up and cause the conductor to An increase in temperature will reduce the current carrying capacity and service life of the cable. In severe cases, the cable will break down due to heat, and the sealing and stability of the joints of the current cable during installation are relatively average, which will also affect the service life. Therefore, in view of the above problems, a non-magnetic material armored XLPE insulated power cable is proposed.

Contents of the invention

The object of the present invention is to provide a non-magnetic material armored cross-linked polyethylene insulated power cable in order to solve the above problems.

The present invention achieves the above object through the following technical solutions, a non-magnetic material armored cross-linked polyethylene insulated power cable, including clamps, first connecting plate, second connecting plate, fixing bolts, and the cable body;

The clamp is sleeved on one end surface of the cable body, the first connecting plate and the second connecting plate are fixedly connected to both ends of the clamp, and the first connecting plate and the The surface of the second connecting plate is respectively provided with a first connecting hole and a second connecting hole; the ends of the fixing bolts pass through the first connecting hole and the second connecting hole respectively, and the ends of the fixing bolts with fixing nut;

The cable body is composed of an outer sheath, a non-magnetic tape, a flame retardant layer, a tensile layer, an inner cushion layer, an insulating layer and a circular conductor, and the outer surface of the circular conductor is sleeved with the insulating layer. The outer surface of the insulating layer is socketed with the inner cushion layer, the outer surface of the inner cushion layer is socketed with a tensile layer, the outer surface of the tensile layer is socketed with a flame-retardant layer, and the flame-retardant layer The outer surface of the non-magnetic belt is sleeved with the outer sheath.

Preferably, an ear plate is fixedly attached to the surface of the clamp, and a mounting hole is opened on a side of the ear plate.

Preferably, a connecting ring is fixedly connected to the outer end surface of the clamp, a groove is formed on the surface of the connecting ring, and a sealing gasket is engaged inside the groove.

Preferably, both ends of the cable body are sleeved with one clamp, and the clamp is in a ring-shaped structure.

Preferably, a through hole is provided inside the connecting ring, and the through hole is opened on the outer end surface of the clamp.

Preferably, the circular conductor is composed of a plurality of annealed round copper wires, and the plurality of annealed soft round copper wires are twisted in a regular twisting manner.

Preferably, the insulating layer covers the surface of the circular conductor evenly and tightly in a circular shape, and the inner cushion layer is installed by extrusion or wrapping.

Preferably, the non-magnetic strip is made of aluminum alloy, and it has a double-layer gap wrapping structure.

Preferably, the flame-retardant layer is made of rock wool, and the tensile layer is a mesh structure woven by copper wires.

Preferably, the outer sheath is made of polyethylene material, and it is molded by extrusion.

The beneficial effects of the present invention are:

1. The circular conductor of the present invention adopts a circular non-compression structure, which is used to increase the outer diameter of the cable, improve the bending performance of the cable and the outer diameter of the cable, so that the cable can achieve a better heat dissipation effect during use, and the resistance The setting of the combustion layer can enhance the flame retardancy, and the rock wool material has good air permeability and does not affect the heat dissipation effect;

2. The non-magnetic material in the present invention can use stainless steel strip, aluminum alloy strip, aluminum strip or pure copper strip, etc. The non-magnetic strip is a double-layer gap wrapping structure, which can reduce the generation of eddy current when the alternating current passes repeatedly. Thereby reducing the generation of internal heat and playing a certain protective role;

3. The present invention can fix the hoop on the two end faces of the cable body through the cooperation of the fixing bolt and the fixing nut, and can pass the circular conductor through the through hole on the end face to carry out wiring, and then connect the cable through the ear plate. The hoop is fixed at the wiring, and the sealing gasket is used to improve the sealing of the wiring and prolong the service life.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is an end view of the overall structure of the present invention;

Fig. 3 is a side view of the clamp of the present invention;

Fig. 4 is a schematic diagram of the structure of the cable body of the present invention;

Fig. 5 is a schematic diagram of the structure of the tensile layer of the present invention.

In the figure: 1. Clamp, 2. Cable body, 3. Ear plate, 4. Mounting hole, 5. Fixing bolt, 6. First connecting plate, 7. Second connecting plate, 8. Fixing nut, 9. Connection Ring, 10, card slot, 11, first connection hole, 12, second connection hole, 13, through hole, 14, sealing gasket, 15, outer sheath, 16, non-magnetic tape, 17, flame-retardant layer, 18 , Tensile layer, 19, inner cushion layer, 20, insulation layer, 21, circular conductor.

Detailed ways

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner" and "outer" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

Please refer to Figure 1-5, a non-magnetic material armored cross-linked polyethylene insulated power cable, including clamps 1, first connecting plate 6, second connecting plate 7, and fixing bolts installed in sequence from left to right 5. And the cable body 2;

The clip 1 is sleeved on one end surface of the cable body 2, the first connecting plate 6 and the second connecting plate 7 are fixedly connected to both ends of the clip 1, and the first A connecting plate 6 and the surface of the second connecting plate 7 are respectively provided with a first connecting hole 11 and a second connecting hole 12; the ends of the fixing bolts 5 respectively pass through the first connecting hole 11 and the second Connecting hole 12, and the end of described fixing bolt 5 is screwed with fixing nut 8;

The cable body 2 is composed of an outer sheath 15, a non-magnetic tape 16, a flame retardant layer 17, a tensile layer 18, an inner cushion layer 19, an insulating layer 20 and a circular conductor 21. The outer surface of the circular conductor 21 is The insulating layer 20 is sleeved, the outer surface of the insulating layer 20 is sleeved with the inner cushion layer 19, the outer surface of the inner cushion layer 19 is sleeved with a tensile layer 18, and the tensile layer 18 The outer surface of the flame retardant layer 17 is sleeved, the outer surface of the flame retardant layer 17 is sleeved with the non-magnetic belt 16 , and the outer surface of the non-magnetic belt 16 is sleeved with the outer sheath 15 .

The surface of the clip 1 is affixed with an ear plate 3, and the side of the ear plate 3 is provided with a mounting hole 4; the outer end surface of the clip 1 is affixed with a connecting ring 9, and the connecting ring 9 There is a clamp groove 10 on the surface, and a sealing gasket 14 is engaged inside the clamp groove 10; a clamp 1 is sleeved on both ends of the cable body 2, and the clamp 1 is circular structure; the inside of the connecting ring 9 is provided with a through hole 13, and the through hole 13 is opened on the outer end surface of the clamp 1; the circular conductor 21 is composed of a plurality of annealed round copper wires, and a plurality of annealed The soft round copper wire is twisted and formed according to a normal twisting method; the insulating layer 20 is uniformly and tightly covered on the surface of the circular conductor 21 in a ring shape, and the inner cushion layer 19 is installed by extrusion or wrapping; The non-magnetic belt 16 is made of aluminum alloy, and it has a double-layer gap wrapping structure; the flame-retardant layer 17 is made of rock wool, and the tensile layer 18 is braided by copper wire Reticular structure; the outer sheath 15 is made of polyethylene material, and it is molded by extrusion.

When the present invention is in use, a circular conductor 21 is firstly provided inside the cable body 2, and the circular conductor 21 adopts a circular non-compressed structure, which is used to increase the outer diameter of the cable, improve the bending performance of the cable and the outer diameter of the cable. , so that the cable can achieve a better heat dissipation effect during use, and the setting of the flame-retardant layer 17 can enhance the flame-retardant ability, and at the same time, the rock wool material has good air permeability and does not affect the heat dissipation effect; the non-magnetic belt 16 can be a stainless steel belt , aluminum alloy strip, aluminum strip or pure copper strip, etc. The non-magnetic strip 16 is a double-layer gap wrapping structure, which can reduce the generation of eddy current when the alternating current passes repeatedly, thereby reducing the generation of internal heat and playing a certain role in protection. effect;

Then when wiring, the clamp 1 can be fixed on the two end faces of the cable body 2 through the cooperation of the fixing bolt 5 and the fixing nut 8, and the circular conductor 21 is passed through the through hole 13 on the end face of the clamp 1, so as to Wiring is carried out, and then its clamp 1 is fixed at the wiring place through the ear plate 3, and the sealing gasket 14 is used to improve the sealing performance of the wiring place, prolonging the service life.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and scope of the same elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A non-magnetic material armored cross-linked polyethylene insulated power cable, characterized in that: it includes a clamp (1), a first connecting plate (6), and a second connecting plate (7) installed sequentially from left to right , fixing bolt (5), and cable body (2); The clamp (1) is sleeved on one end surface of the cable body (2), and both ends of the clamp (1) are fixedly connected with the first connecting plate (6) and the second A connection plate (7), and the surfaces of the first connection plate (6) and the second connection plate (7) are respectively provided with a first connection hole (11) and a second connection hole (12); the fixing The ends of the bolts (5) respectively pass through the first connecting hole (11) and the second connecting hole (12), and the ends of the fixing bolts (5) are screwed with fixing nuts (8); The cable body (2) consists of an outer sheath (15), a non-magnetic tape (16), a flame retardant layer (17), a tensile layer (18), an inner cushion layer (19), an insulating layer (20) and a round shaped conductor (21), the outer surface of the circular conductor (21) is sleeved with the insulating layer (20), and the outer surface of the insulating layer (20) is sleeved with the inner cushion layer (19) , the outer surface of the inner cushion layer (19) is sleeved with a tensile layer (18), the outer surface of the tensile layer (18) is sleeved with a flame-retardant layer (17), and the flame-retardant layer (17) ) is sleeved with a non-magnetic tape (16), and the outer surface of the non-magnetic tape (16) is sleeved with the outer sheath (15). 2. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the surface of the clamp (1) is fixed with an ear plate (3), and the ear Mounting holes (4) are provided on the side of the plate (3). 3. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the outer end face of the clamp (1) is fixedly connected with a connecting ring (9), the A clamping groove (10) is formed on the surface of the connecting ring (9), and a sealing gasket (14) is clamped inside the clamping groove (10). 4. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: both ends of the cable body (2) are sleeved with one clamp (1) , and the clamp (1) is a ring-shaped structure. 5. A non-magnetic material armored XLPE insulated power cable according to claim 3, characterized in that: said connecting ring (9) is provided with a through hole (13) inside, and said through hole (13) is provided on the outer end surface of the clamp (1). 6. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the circular conductor (21) is composed of a plurality of annealed round copper wires, and the plurality of annealed soft The round copper wire is twisted and shaped according to the normal twisting method. 7. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the insulating layer (20) is in the shape of a ring and evenly and tightly covers the circular conductor (21 ) surface, and the inner pad (19) is installed by extrusion or wrapping. 8. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the non-magnetic tape (16) is an aluminum alloy tape, and it is a double-layer gap winding package structure. 9. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the flame retardant layer (17) is made of rock wool material, and the tensile layer ( 18) A mesh structure woven from copper wires. 10. A non-magnetic material armored cross-linked polyethylene insulated power cable according to claim 1, characterized in that: the outer sheath (15) is made of polyethylene material, and it is formed by extrusion .

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