CN210837214U

CN210837214U - Low-voltage rubber jacketed flexible cable with grounding detection line

Info

Publication number: CN210837214U
Application number: CN201921669544.1U
Authority: CN
Inventors: 钱章兴; 刘春艳; 王兵兵; 丁国生
Original assignee: Shanghai Lanhao Electric Power Co ltd
Current assignee: Shanghai Lanhao Electric Power Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-06-23
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a low pressure rubber cover flexible cable with ground connection detection line, including cable core and outer jacket, outer jacket parcel cable core setting, the cable core includes earth core, power sinle silk and ground connection detection sinle silk, power sinle silk is equipped with many, and many power sinle silks encircle the setting, the earth core is equipped with many, and many earth cores set up respectively in the clearance of a plurality of adjacent power sinle silks, ground connection detection sinle silk sets up in the clearance of adjacent power sinle silk, ground connection detection sinle silk and earth core, power sinle silk transposition stranding, the transposition pitch diameter ratio of cable core is 5-14 times. The utility model discloses a reasonable structural design increases ground connection inspection sinle silk in the cable, when guaranteeing that the strong bending property of cable tensile strength is excellent, judges whether earthing device has ground fault, avoids the emergence of electric shock accident.

Description

Low-voltage rubber jacketed flexible cable with grounding detection line

Technical Field

The utility model relates to the technical field of cables, especially, relate to the low pressure rubber jacketed flexible cable of special equipment use occasions such as mine, opencut coal mine, shield structure, specifically be a low pressure rubber jacketed flexible cable with ground detection line.

Background

Coal mining machines, conveyors, auxiliary equipment, automation control equipment, illumination equipment, monitoring equipment and the like used in operation all need power support, some equipment needs a high-voltage cable to provide power support, some equipment needs a low-voltage cable to provide power support, some equipment needs a communication cable to provide signal transmission, and some equipment needs an optical cable to provide signal transmission. In the process of using the cable, the grounding safety of the cable is particularly important in special equipment using occasions such as mines, opencast mines, shields and the like, the grounding is arranged for preventing the equipment from being electrified due to insulation damage, and if the special equipment is not firmly grounded or a grounding wire is broken, the equipment generates an electric leakage phenomenon, and once a person touches an electrified body, an electric shock accident can occur.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low pressure rubber cover flexible cable with ground connection detection line increases ground connection inspection sinle silk in the cable through reasonable structural design, when guaranteeing that the strong bending property of cable tensile strength is excellent, judges whether earthing device has ground fault, avoids the emergence of electric shock accident.

In order to achieve the purpose of the invention, the utility model adopts the following technical scheme: the utility model provides a low pressure rubber cover flexible cable with ground detection line, includes cable core and outer jacket, outer jacket parcel cable core setting, the cable core includes earth core, power sinle silk and ground detection sinle silk, power sinle silk is equipped with many, and many power sinle silks encircle the setting, the earth core is equipped with many, and many earth cores set up respectively in the clearance of a plurality of adjacent power sinle silks, ground detection sinle silk sets up in the clearance of adjacent power sinle silk, ground detection sinle silk and earth core, power sinle silk transposition stranding, the transposition pitch diameter ratio of cable core is 5-14 times.

Preferably, the ground wire core is closely attached to the power wire cores on the two sides, and the ground detection wire core is closely attached to the power wire cores on the two sides.

Preferably, the ground core comprises a ground conductor.

Preferably, the power line core comprises a power line conductor, a first insulating layer and an outer shielding layer, the first insulating layer wraps the power line conductor, and the outer shielding layer wraps the first insulating layer.

Preferably, the ground detection wire core comprises a ground detection wire conductor and a second insulating layer, and the second insulating layer is wrapped around the ground detection wire conductor.

Preferably, the strength of the outer protective layer is greater than or equal to 11Mpa, and the outer protective layer is a rubber sheath.

Preferably, the outer protective layer is made of plastic elastomer materials.

Preferably, the number of the power wire cores is three.

Preferably, the number of the ground wire cores is two.

Compared with the prior art, the low-voltage rubber jacketed flexible cable with the grounding detection line has the following beneficial effects that: adopt the utility model discloses a low pressure rubber cover flexible cable with ground connection detection line increases the ground connection detection sinle silk in the cable, judges whether earthing device has ground fault, can in time report to the police when equipment takes place the electric leakage, prevents the casualties of personal electric shock, effectively ensures staff's security.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the low-voltage rubber jacketed flexible cable with a grounding detection line of the present invention.

Reference numerals: 1. a ground wire core; 2. a power wire core; 21. a power line conductor; 22. a first insulating layer; 23. An outer shield layer; 3. grounding the detection wire core; 31. a ground detection line conductor; 32. a second insulating layer; 4. an outer jacket.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 is the structural schematic diagram of low pressure rubber cover flexible cable with ground detection line, including cable core and outer jacket 4, outer jacket 4 wraps up the cable core setting, and the cable core includes earth core 1, power sinle silk 2 and ground detection sinle silk 3, and power sinle silk 2 is equipped with many, and many power sinle silks 2 encircle the setting, and earth core 1 is equipped with many, and many earth cores 1 set up respectively in a plurality of adjacent power sinle silks 2's clearance to earth core 1 and the setting of closely laminating of both sides power sinle silk 2. The ground detection sinle silk 3 sets up in the clearance of adjacent power sinle silk 2 to ground detection sinle silk 3 sets up with the closely laminating of both sides power sinle silk 2. In this embodiment, the number of the power wire cores 2 is three, and the number of the ground wire cores 1 is two. Three power sinle silk 2 encircle and form three clearance, and two earth core 1 set up respectively in two clearances wherein and adjacent setting, and ground connection detects sinle silk 3 and sets up in remaining clearance, the effectual break-make condition that detects the earth wire.

The grounding detection wire core 3, the grounding wire core 1 and the power wire core 2 are stranded to form a cable, the stranding pitch diameter ratio of the cable core is 5-14 times, and in the embodiment, the stranding pitch diameter ratio of the cable core is 10 times. The ground core 1 comprises a ground conductor. The power wire core 2 comprises a power wire conductor 21, a first insulating layer 22 and an outer shielding layer 23, the first insulating layer 22 wraps the power wire conductor 21, and the outer shielding layer 23 wraps the first insulating layer 22. The grounding detection wire core 3 comprises a grounding detection wire conductor 31 and a second insulating layer 32, and the second insulating layer 32 wraps the grounding detection wire conductor 31. The outer protective layer 4 is made of a rubber sheath or a plastic elastomer material, and the strength of the outer protective layer 4 is ensured to be more than or equal to 11 Mpa.

The above is the preferred embodiment of the present invention, and a person skilled in the art can make several modifications and improvements without departing from the principle of the present invention, and these should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a low pressure rubber cover flexible cable with ground connection detection line which characterized in that: including cable core and outer jacket (4), outer jacket (4) parcel cable core setting, the cable core includes earth core (1), power sinle silk (2) and ground connection detection sinle silk (3), power sinle silk (2) are equipped with many, and many power sinle silk (2) encircle the setting, earth core (1) are equipped with many, and many earth core (1) set up respectively in the clearance of a plurality of adjacent power sinle silks (2), ground connection detection sinle silk (3) set up in the clearance of adjacent power sinle silk (2), ground connection detection sinle silk (3) and earth core (1), power sinle silk (2) transposition stranding, the transposition pitch diameter ratio of cable core is 5-14 times.

2. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: ground sinle silk (1) and both sides power sinle silk (2) closely laminate the setting, ground connection detection sinle silk (3) and both sides power sinle silk (2) closely laminate the setting.

3. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the ground wire core (1) comprises a ground wire conductor.

4. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the power cable core (2) comprises a power cable conductor (21), a first insulating layer (22) and an outer shielding layer (23), the power cable conductor (21) is wrapped by the first insulating layer (22), and the first insulating layer (22) is wrapped by the outer shielding layer (23).

5. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the grounding detection wire core (3) comprises a grounding detection wire conductor (31) and a second insulating layer (32), and the second insulating layer (32) wraps the grounding detection wire conductor (31) in arrangement.

6. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the strength of the outer protective layer (4) is greater than or equal to 11Mpa, and the outer protective layer (4) is made of a rubber sheath.

7. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the outer protective layer (4) is made of a plastic elastomer material.

8. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the number of the power wire cores (2) is three.

9. The low-voltage rubber jacketed flexible cable with the grounding detection line of claim 1, characterized in that: the number of the ground wire cores (1) is two.