CN212907218U

CN212907218U - Waterproof and high-safety 220KV polyethylene insulated power cable

Info

Publication number: CN212907218U
Application number: CN202022059632.9U
Authority: CN
Inventors: 杨春贵; 刘凤梅; 赵明祥; 杨俊驿
Original assignee: Kunming Kunbao Wire & Cable Manufacturing Co ltd
Current assignee: Kunming Kunbao Wire & Cable Manufacturing Co ltd
Priority date: 2020-09-19
Filing date: 2020-09-19
Publication date: 2021-04-06
Anticipated expiration: 2030-09-19

Abstract

The utility model discloses a waterproof and high 220KV polyethylene insulation power cable of security, including waterproof layer and sinle silk, inside the endotheca was located to the sinle silk, endotheca and shielding layer interconnect simultaneously are equipped with in the middle of shielding layer and the endotheca at a distance from the oxygen layer, the inside isolation layer that absorbs water that is equipped with of waterproof layer, the isolation layer other end that absorbs water simultaneously is equipped with the cavity spacer tube, and the cavity spacer tube locates the inside center of waterproof layer to be equipped with the filler in the middle of waterproof layer and the isolation layer that absorbs water, and the filler outside is fixed mounting with the connected mode of waterproof layer, the waterproof layer outside is equipped with the armor, and the armor is located inside by the oversheath simultaneously to the oversheath locates the in-line hole of insulator, and the oversheath still. This waterproof and high 220KV polyethylene insulated power cable of security dispels the heat with the inside heat that produces of device to reduce the inside temperature of device, and possess waterproof, fire prevention and thermal-insulated function, life is longer, and the security performance is high.

Description

Waterproof and high-safety 220KV polyethylene insulated power cable

Technical Field

The utility model relates to a power cable technical field specifically is a 220KV polyethylene insulation power cable that waterproof and security are high.

Background

In recent years, in an accident related to a cable power system, the rate of interruption of power supply to the power system due to fire or flooding of the power cable tends to increase. When external force causes damage to the cable sheath and the insulation or joint damage during the laying and operation of the cable, moisture or water can infiltrate along the longitudinal and radial gaps of the cable, so that the crosslinked polyethylene insulation generates water trees under the operation voltage. After a certain period of time, the water tree grows to a certain length, which can cause permanent electrical tree defects at the tip, and finally lead to cable insulation breakdown.

The cable is usually formed by twisting several or several groups of conductors (at least two in each group), each group of conductors are mutually insulated, usually twisted around a center, the whole outer surface is coated with a highly insulated covering layer, the cable is mostly installed underground, underwater or erected in the air and used for telecommunication or power transmission, in 1832, the sarand retirement officer licence buries the telegraph line underground, and the six conductors are mutually insulated by rubber and then placed in a glass tube, which is the earliest underground cable in the world.

At present, a copper core crosslinked polyethylene insulated power cable with a rated voltage of 26/35kV is known to use polyethylene as insulation and polyvinyl chloride as a sheath, so that the cable does not have waterproof, fireproof and heat-insulating functions, is short in service life and poor in safety performance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a 220KV polyethylene insulated power cable that waterproof and security are high to propose to use polyethylene as insulating in solving above-mentioned background art, polyvinyl chloride is the sheath, does not possess waterproof, fire prevention and thermal-insulated function mostly, and the life-span is mostly shorter, the poor problem of security performance.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a waterproof and high-safety 220KV polyethylene insulated power cable, includes waterproof layer and sinle silk, the sinle silk is located inside the endotheca, and endotheca and shielding layer interconnect simultaneously are equipped with in the middle of shielding layer and the endotheca and separate the oxygen layer, the inside isolation layer that absorbs water that is equipped with of waterproof layer, the isolation layer other end that absorbs water simultaneously is equipped with the cavity spacer tube, and the inside center of waterproof layer is located to the cavity spacer tube moreover to be equipped with the filler in the middle of waterproof layer and the isolation layer that absorbs water, and the filler outside is fixed mounting with the connected mode of waterproof layer, the waterproof layer outside is equipped with the armor, and the armor is located inside by the outer jacket cover simultaneously to the outer jacket is located the line inslot of.

Preferably, the diameter of the inner wall of the outer protective layer is equal to the diameter of the outer wall of the armor layer, and the diameter of the inner wall of the armor layer is equal to the diameter of the outer wall of the waterproof layer.

Preferably, the waterproof layer is internally provided with four water absorption isolation layers, the water absorption isolation layers are uniformly and symmetrically arranged, and the tail ends of the water absorption isolation layers are connected with the hollow partition pipes.

Preferably, the shielding layer is arranged inside the waterproof layer, four shielding layers are arranged inside the waterproof layer, and each shielding layer is arranged between two different water absorption isolation layers.

Preferably, the insulator and the outer sheath are movably mounted, and the diameter of the wire hole in the insulator is equal to the diameter of the outer layer of the outer sheath.

Preferably, the wire grip includes a device body, a rotation shaft and a rotation handle, the rotation shaft is disposed inside the device body, the rotation shaft penetrates through the device body, the bottom of the rotation shaft is fixedly mounted to the rotation handle, the rotation handle is disposed outside the device body, and the outer sheath is disposed on the surface of the rotation shaft of the wire grip.

Compared with the prior art, the beneficial effects of the utility model are that: the 220KV polyethylene insulated power cable with the characteristics of water resistance and high safety dissipates heat generated inside the device to reduce the temperature inside the device, has the functions of water resistance, fire resistance and heat insulation, and is long in service life and high in safety performance;

1. the hollow partition pipe is arranged in the device, so that heat generated in the device can be dissipated through the hollow partition pipe, the temperature in the device is reduced, and the wire core is protected;

2. the filler in the device is made of non-wet materials, so that the moisture-proof and waterproof capacity of the wire core can be effectively improved, and the service life and the stability of the device are improved;

3. be equipped with insulator and turn-buckle matched with structure, make the device can fix, pack up unnecessary length simultaneously, improved the security of device.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic view of the top-down structure of the present invention;

fig. 3 is a schematic view of the structure of the insulator of the present invention;

fig. 4 is the utility model discloses turn-buckle structure schematic diagram.

In the figure: 1. an outer jacket; 2. an armor layer; 3. a waterproof layer; 4. a filler; 5. a water-absorbing isolation layer; 6. a hollow partition pipe; 7. a shielding layer; 8. an oxygen barrier layer; 9. an inner sleeve; 10. a wire core; 11. an insulator; 12. a wire hole; 13. a wire grip; 1301. a device body; 1302. a rotating shaft; 1303. a handle is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a waterproof and high-safety 220KV polyethylene insulated power cable comprises an outer protective layer 1, an armor layer 2, a waterproof layer 3, a filler 4, a water absorption isolation layer 5, a hollow partition pipe 6, a shielding layer 7, an oxygen barrier layer 8, an inner sleeve 9, a wire core 10, an insulator 11, a wire hole 12 and a wire tightener 13, wherein the wire core 10 is arranged inside the inner sleeve 9, the inner sleeve 9 is connected with the shielding layer 7, the oxygen barrier layer 8 is arranged between the shielding layer 7 and the inner sleeve 9, the water absorption isolation layer 5 is arranged inside the waterproof layer 3, the hollow partition pipe 6 is arranged at the other end of the water absorption isolation layer 5, the hollow partition pipe 6 is arranged in the center inside of the waterproof layer 3, the filler 4 is arranged between the waterproof layer 3 and the water absorption isolation layer 5, the outer side of the filler 4 is fixedly installed with the waterproof layer 3, the armor layer 2 is arranged on the outer side of the waterproof layer 3, and the, the outer protective layer 1 is arranged in a wire hole 12 of the insulator 11, and the outer protective layer 1 is movably installed with the wire grip 13.

In the embodiment, the diameter of the inner wall of the outer protective layer 1 is equal to that of the outer wall of the armor layer 2, and the diameter of the inner wall of the armor layer 2 is equal to that of the outer wall of the waterproof layer 3;

four water absorption isolation layers 5 are arranged inside the waterproof layer 3, the water absorption isolation layers 5 are uniformly and symmetrically arranged, and the tail ends of the water absorption isolation layers are connected with the hollow partition pipe 6, so that the hollow partition pipe 6 can dissipate heat generated inside the device, the temperature inside the device is reduced, and the wire core 10 is protected;

inside waterproof layer 3 was located to shielding

layer

7, 3 internally mounted of waterproof layer has four shielding layers 7 simultaneously to every shielding layer 7 is located between two different isolation layers 5 that absorb water, makes the inside hydrone of device can attract through isolation layer 5 that absorbs water, thereby can effectively improve the dampproofing and waterproofing ability of sinle silk 10, improves the life and the stability of device.

The insulator 11 and the outer protection layer 1 are movably mounted, and meanwhile, the diameter of the wire hole 12 in the insulator 11 is equal to that of the outer layer of the outer protection layer 1, so that the device can be fixed through the insulator 11, and the safety of the device is improved;

the wire grip 13 includes a device body 1301, a rotation shaft 1302, and a rotation handle 1303, the rotation shaft 1302 is disposed inside the device body 1301, the rotation shaft 1302 penetrates through the device body 1301, the bottom of the rotation shaft 1302 is fixedly mounted to the rotation handle 1303, the rotation handle 1303 is disposed outside the device body 1301, and the outer sheath 1 is disposed on the surface of the rotation shaft 1302 of the wire grip 13, so that the excess length of the device can be taken up, and the safety of the device is improved.

The working principle is as follows: when using the device, as shown in fig. 1 and 3-4, the device can be arranged in the wire hole 12 inside the insulator 11, meanwhile, the redundant length of the device is arranged on the surface of the rotating shaft 1302 of the wire grip 13, and then, the redundant length of the device is arranged inside the device body 1301 by using the rotating handle 1303, so as to improve the safety of the device.

Next, as shown in fig. 2, the external protection layer 1 and the armor layer 2 can protect the internal structure of the device in multiple layers, and the waterproof layer 3 can have a certain waterproof effect. Can attract through the effect of the isolation layer 5 that absorbs water and filler 4 when the inside hydrone of device to device inside is equipped with cavity spacer tube 6, can dispel the heat with the inside heat that produces of device through cavity spacer tube 6, with the inside temperature of reduction device, plays the effect to sinle silk 10 protection, separates oxygen layer 8 and endotheca 9 simultaneously and can protect the inside sinle silk 10 of device, guarantees the normal work of sinle silk 10 through shielding layer 7.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a waterproof and high 220KV polyethylene insulation power cable of security, includes waterproof layer (3) and sinle silk (10), its characterized in that: the wire core (10) is arranged in the inner sleeve (9), the inner sleeve (9) is connected with the shielding layer (7), an oxygen barrier layer (8) is arranged between the shielding layer (7) and the inner sleeve (9), a water absorption isolation layer (5) is arranged inside the waterproof layer (3), meanwhile, the other end of the water absorption isolation layer (5) is provided with a hollow partition pipe (6), the hollow partition pipe (6) is arranged in the center of the interior of the waterproof layer (3), and a filler (4) is arranged between the waterproof layer (3) and the water absorption isolation layer (5), and the outer side of the filler (4) is fixedly connected with the waterproof layer (3), the armor layer (2) is arranged on the outer side of the waterproof layer (3), the armor layer (2) is sleeved inside by the outer protective layer (1), the outer protective layer (1) is arranged in a wire hole (12) of the insulator (11), and the outer protective layer (1) is movably arranged with the wire grip (13).

2. The 220KV polyethylene insulated power cable with water resistance and high safety according to claim 1, characterized in that: the diameter of the inner wall of the outer protective layer (1) is equal to that of the outer wall of the armor layer (2), and the diameter of the inner wall of the armor layer (2) is equal to that of the outer wall of the waterproof layer (3).

3. The 220KV polyethylene insulated power cable with water resistance and high safety according to claim 1, characterized in that: the waterproof layer (3) is internally provided with four water absorption isolation layers (5), the water absorption isolation layers (5) are uniformly and symmetrically arranged, and the tail ends of the water absorption isolation layers are connected with the hollow partition pipes (6).

4. The 220KV polyethylene insulated power cable with water resistance and high safety according to claim 1, characterized in that: inside waterproof layer (3) were located in shielding layer (7), waterproof layer (3) internally mounted has four shielding layers (7) simultaneously to every shielding layer (7) are located between two different isolation layer (5) that absorb water.

5. The 220KV polyethylene insulated power cable with water resistance and high safety according to claim 1, characterized in that: the insulator (11) and the outer protection layer (1) are movably mounted, and meanwhile the diameter of the wire hole (12) in the insulator (11) is equal to that of the outer layer of the outer protection layer (1).

6. The 220KV polyethylene insulated power cable with water resistance and high safety according to claim 1, characterized in that: the tightener (13) comprises a device body (1301), a rotating shaft (1302) and a rotating handle (1303), wherein the rotating shaft (1302) is arranged inside the device body (1301), the rotating shaft (1302) penetrates through the device body (1301), the bottom of the rotating shaft (1302) is fixedly installed with the rotating handle (1303), the rotating handle (1303) is arranged on the outer side of the device body (1301), and an outer protective layer (1) is arranged on the surface of the rotating shaft (1302) of the tightener (13).