CN213635481U

CN213635481U - High-temperature-resistant cable for transformer

Info

Publication number: CN213635481U
Application number: CN202023267708.3U
Authority: CN
Inventors: 史燕萍
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-07-06
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a high temperature resistant type cable for transformer, including cable main part, fire-resistant inflation layer, buffering water-blocking layer, pamm layer, S type nylon skeleton, strengthening rib, copper conductor and polyethylene insulating layer, the cable main part inboard is equipped with the oversheath, the inboard parcel of oversheath has fire-resistant inflation layer, the inboard parcel of fire-resistant inflation layer has buffering water-blocking layer, the inboard parcel of buffering water-blocking layer has pamm layer, strengthening rib one side is equipped with the copper conductor, be equipped with on the copper conductor the polyethylene insulating layer, the inboard parcel of polyethylene insulating layer has the elastic layer. The utility model discloses a fire-resistant expansion layer strengthens the fire resistance of cable, for the high temperature resistance of reinforcing cable, is equipped with buffering water blocking layer in the device, lets the cable have good water blocking performance, strengthens the waterproof nature of cable, and the cable main part has set up one deck pamm layer, makes the impact-resistant of cable main part pound not split pound not garrulous, and pamm layer itself has very strong insulating nature and refractiveness.

Description

High-temperature-resistant cable for transformer

Technical Field

The utility model relates to a transformer technical field particularly, relates to a high temperature resistant type cable for transformer.

Background

A transformer is a device for transforming ac voltage, current and impedance, and when an ac current flows through a primary winding, an ac magnetic flux is generated in an iron core (or a magnetic core), so that a voltage (or a current) is induced in a secondary winding. The transformer consists of an iron core (or a magnetic core) and a coil, wherein the coil is provided with two or more than two windings, the winding connected with a power supply is called a primary coil, and the other windings are called secondary coils. In a generator, an electric potential is induced in a coil, whether the coil is moved through a magnetic field or the magnetic field is moved through a stationary coil, in both cases the value of the flux is constant, but the amount of flux linked to the coil varies, which is the principle of mutual induction. The transformer is a device for transforming voltage, current and impedance by utilizing the electromagnetic mutual inductance effect.

In the case of cables which are indispensable in transformers, the cable is usually a rope-like cable formed by twisting several or several groups of conductors, each group of conductors being insulated from each other and often twisted around a center, the whole being covered with a highly insulating coating. The power transmission from the high-voltage main line to the transformer also depends on cables, the requirement on the uniformity of the cables is high, and a high-temperature resistant cable for the transformer is needed to solve the problem.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a transformer is with high temperature resistant type cable to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high temperature resistant type cable for transformer, includes cable main part, fire-resistant inflation layer, buffering water-blocking layer, pamm layer, S type nylon skeleton, strengthening rib, copper conductor and polyethylene insulating layer, cable main part inboard is equipped with the oversheath, the inboard parcel of oversheath has fire-resistant inflation layer, the inboard parcel of fire-resistant inflation layer has buffering water-blocking layer, the inboard parcel of buffering water-blocking layer has pamm layer, the inboard parcel of pamm layer has S type nylon skeleton, S type nylon skeleton inboard is equipped with the strengthening rib, strengthening rib one side is equipped with the copper conductor, be equipped with on the copper conductor the polyethylene insulating layer, the inboard parcel of polyethylene insulating layer has the elastic layer.

Further, an inner sheath is wrapped on the inner side of the palm layer, and the thickness of the inner sheath is 0.15 mm.

Further, the thickness of the outer sheath is 0.15mm, and the thickness of the outer sheath is the same as that of the inner sheath.

Further, the inner side of the inner sheath is wrapped with a flame-retardant layer, and the thickness of the flame-retardant layer is 0.25 mm.

Further, the thickness of the fire-resistant expansion layer is 0.35mm, and the thickness of the buffering and water-blocking layer is 0.25 mm.

Furthermore, a filling layer is arranged between the S-shaped nylon skeleton and the copper conductor, and the filling layer is made of polypropylene mesh filling rope.

Furthermore, a shielding layer is arranged between the polyethylene insulating layer and the elastic layer, and the thickness of the shielding layer is 0.15 mm.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the utility model relates to a transformer is with high temperature resistant type cable, this device strengthens the fire behavior of cable through fire-resistant inflation layer, high temperature resistance for the enhancement cable, be equipped with buffering water-blocking layer in the device, let the cable have good water blocking performance, the waterproof nature of reinforcing cable, polyvinyl chloride insulating layer reinforcing electrical insulation has been set up, the cable main part has set up one deck nurse layer, make cable main part crashproof pound not split pound not garrulous, nurse layer itself has very strong insulating nature and fire resistance, can guarantee on the basis that electric wire and cable has sufficient anti-impact ability, good insulating properties and fire resistance have simultaneously, whole cable has very strong high temperature resistance and impact resistance, and is suitable for being generalized to use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a high temperature resistant cable for a transformer according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a main body of a high temperature resistant cable for a transformer according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a conductor of a high temperature resistant cable for a transformer according to an embodiment of the present invention.

Reference numerals:

1. a cable body; 2. an outer sheath; 3. a refractory intumescent layer; 4. buffering a water-resistant layer; 5. a pamm layer; 6. an inner sheath; 7. a flame retardant layer; 8. an S-shaped nylon skeleton; 9. a filling layer; 10. reinforcing ribs; 11. a copper conductor; 12. a polyethylene insulating layer; 13. a shielding layer; 14. an elastic layer.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a high temperature resistant cable for a transformer according to an embodiment of the present invention includes a cable body 1, a fire-resistant expansion layer 3, a buffer water-resistant layer 4, a pamm layer 5, an S-shaped nylon skeleton 8, a reinforcing rib 10, a copper conductor 11, and a polyethylene insulation layer 12, an outer sheath 2 is arranged on the inner side of the cable main body 1, the inner side of the outer sheath 2 is wrapped with the fire-resistant expansion layer 3, the inner side of the fire-resistant expansion layer 3 is wrapped with the buffer water-resistant layer 4, the inner side of the buffer water-resistant layer 4 is wrapped with the pamm layer 5, the inner side of the Perm layer 5 is wrapped with the S-shaped nylon skeleton 8, the inner side of the S-shaped nylon skeleton 8 is provided with the reinforcing rib 10, the copper conductor 11 is arranged on one side of the reinforcing rib 10, the polyethylene insulating layer 12 is arranged on the copper conductor 11, and the elastic layer 14 wraps the inner side of the polyethylene insulating layer 12.

Through the above technical scheme of the utility model, 5 inboard parcels on pamm layer have inner sheath 6, the thickness of inner sheath 6 is 0.15mm, the thickness of oversheath 2 is the same with inner sheath 6, the inboard parcel of inner sheath 6 has fire-retardant layer 7, and the effect on fire-retardant layer 7 is the refractiveness of further reinforcing cable, the thickness of fire-retardant layer 7 is 0.25mm, the thickness on fire-resistant inflation layer 3 is 0.35mm, the thickness on buffering water blocking layer 4 is 0.25mm, be equipped with filling layer 9 between S type nylon skeleton 8 and the copper conductor 11, filling layer 9 is the netted filling rope material of polypropylene, be equipped with shielding layer 13 between polyethylene insulating layer 12 and the elastic layer 14, shielding layer 13' S thickness is 0.15 mm.

When specifically using, the utility model relates to a transformer is with high temperature resistant type cable, this device strengthens the fire behavior of cable through fire-resistant inflation layer 3, in order to strengthen the high temperature resistance of cable, be equipped with buffering water blocking layer 4 in the device, let the cable have good water blocking performance, strengthen the waterproof nature of cable, polyvinyl chloride insulating layer 12 reinforcing electrical insulation has been set up, cable main part 1 has set up one deck nurse layer, make cable main part 1 crashproof not split smash not garrulous, nurse layer 5 itself has very strong insulating nature and fire resistance, can guarantee on wire and cable has the basis of sufficient anti-impact ability, good insulating properties and fire resistance have simultaneously, whole cable has very strong high temperature resistance and impact resistance, and is suitable for being generalized to use.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of description and simplification of the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The high-temperature-resistant cable for the transformer is characterized by comprising a cable main body (1), a fire-resistant expansion layer (3), a buffer water-blocking layer (4), a polyurethane layer (5), an S-shaped nylon skeleton (8), reinforcing ribs (10), a copper conductor (11) and a polyethylene insulating layer (12), wherein an outer sheath (2) is arranged on the inner side of the cable main body (1), the fire-resistant expansion layer (3) is wrapped on the inner side of the outer sheath (2), the buffer water-blocking layer (4) is wrapped on the inner side of the fire-resistant expansion layer (3), the polyurethane layer (5) is wrapped on the inner side of the buffer water-blocking layer (4), the S-shaped nylon skeleton (8) is wrapped on the inner side of the polyurethane layer (5), the reinforcing ribs (10) are arranged on the inner side of the S-shaped nylon skeleton (8), the copper conductor (11) is arranged on one side of the reinforcing ribs (10), the polyethylene insulating layer (12), the inner side of the polyethylene insulating layer (12) is wrapped with an elastic layer (14).

2. The high-temperature-resistant cable for the transformer according to claim 1, wherein the paml layer (5) is wrapped with an inner sheath (6) inside, and the thickness of the inner sheath (6) is 0.15 mm.

3. The high-temperature-resistant cable for the transformer according to claim 1, wherein the thickness of the outer sheath (2) is 0.15mm, and the thickness of the outer sheath (2) and the thickness of the inner sheath (6) are the same.

4. The high-temperature-resistant cable for the transformer according to claim 2, wherein the inner sheath (6) is wrapped with a flame-retardant layer (7), and the thickness of the flame-retardant layer (7) is 0.25 mm.

5. The high temperature resistant cable for transformer according to claim 1, wherein the thickness of the fire-resistant expansion layer (3) is 0.35mm, and the thickness of the buffer water-blocking layer (4) is 0.25 mm.

6. The high-temperature-resistant cable for the transformer according to claim 1, wherein a filling layer (9) is arranged between the S-shaped nylon skeleton (8) and the copper conductor (11), and the filling layer (9) is made of polypropylene mesh filling rope.

7. The high-temperature-resistant cable for the transformer according to claim 1, wherein a shielding layer (13) is arranged between the polyethylene insulating layer (12) and the elastic layer (14), and the thickness of the shielding layer (13) is 0.15 mm.