CN215933940U

CN215933940U - Lightning protection signal line

Info

Publication number: CN215933940U
Application number: CN202121747517.9U
Authority: CN
Inventors: 单成龙; 沈超
Original assignee: Hangzhou Jilong Sensing Special Cable Factory
Current assignee: Hangzhou Jilong Sensing Special Cable Factory
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-03-01
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a lightning protection signal wire which comprises a PVC (polyvinyl chloride) sheath, wherein a plurality of groups of core wires are arranged in the PVC sheath, a polyethylene sheath is sleeved outside the core wires, the PVC sheath is sleeved outside the core wires, an aluminum film is arranged on the inner wall of the PVC sheath, an anti-interference metal shielding net is arranged on the outer side of the aluminum film, and a polyester film is bonded outside the anti-interference metal shielding net. According to the lightning protection signal wire, firstly, the inner ground wire is connected with the outermost stainless steel shielding net through the inner metal shielding net to be connected with the shell of the sensor to release current, the structure effectively avoids the situation that the core wire is broken down due to overlarge current when a single-layer shielding net is struck by lightning, and the shielding and lightning protection effects of an outdoor sensor are improved more effectively; and secondly, the elastic sheet is arranged at the front end of the butt joint pipe, and the conical pipe corresponding to the elastic sheet is arranged on the inner side of the connecting ring, so that the signal wire inserted to the rear end of the plug can be extruded and fixed, and the fixing strength of the signal wire is improved.

Description

Lightning protection signal line

Technical Field

The utility model relates to the technical field of signal lines, in particular to a lightning protection signal line.

Background

Signal lines are mainly lines used for transmitting sensing information and control information in an electric control circuit, the signal lines are often formed into one or more bundles of transmission lines by a plurality of cables and can also be printed lines arranged in a printed circuit board, and with the continuous progress of science and technology and application, the signal lines are developed into other carriers such as optical cables and the like from metal carriers;

at present, when the existing outdoor sensor is used, because the working condition requirement is harsh, and the thunderstorm weather condition exists in partial areas, thunder and lightning often can occur and enter into the inside of the sensor along the signal line, thereby damaging the parts inside the sensor and influencing the reasonable utilization of resources, and therefore, the thunder and lightning protection signal line is provided.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a lightning protection signal wire which can effectively solve the problems in the background technology.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the lightning protection signal wire comprises a PVC sheath, a plurality of groups of core wires are arranged in the PVC sheath, a polyethylene sheath is sleeved outside the core wires, the PVC sheath is sleeved outside the core wires, wherein,

the inner wall of the PVC sheath is provided with an aluminum film, the outer side of the aluminum film is provided with an anti-interference metal shielding net formed by weaving metal wires, and a polyester film is bonded outside the anti-interference metal shielding net.

Preferably, the outer part of the PVC sheath is sleeved with a stainless steel shielding net.

Preferably, one end of the PVC sheath is connected with a connector, the other end of the PVC sheath is connected with a plug, the plug comprises a connecting ring movably connected to the outside of the plug and a butt joint pipe inserted at the rear end of the plug, and an elastic sheet arranged at the front end of the butt joint pipe is in threaded connection with a conical pipe connected to the inside of the connecting ring.

Preferably, the conical tube is conical, the elastic sheet arranged at the front end of the butt joint tube is encircled into a cone, and the outer part of the elastic sheet and the inner wall of the conical tube are provided with corresponding threads.

Preferably, the rear end of the butt joint pipe is connected with a conical tapered barrel, and the tapered barrel is sleeved at one end of the PVC sheath.

Preferably, a plurality of groups of rubber bulges are bonded on the inner wall of the butt joint pipe.

Preferably, the connecting ring is provided with anti-slip threads on the outside, and the anti-interference metal shielding net is provided with a grounding copper wire for grounding the anti-interference metal shielding net on the outside.

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

firstly, the inner ground wire is connected with the outermost stainless steel shielding net through the inner metal shielding net to be connected with the shell of the sensor to release current, the structure effectively avoids the condition that the core wire is broken down due to overlarge current when a single-layer shielding net is struck by lightning, and the shielding and lightning protection effects of the outdoor sensor are improved more effectively;

secondly, the elastic sheets which are arranged in a conical shape are arranged at the front end of the butt joint pipe, and the conical pipe corresponding to the elastic sheets is arranged on the inner side of the connecting ring, so that the signal wire inserted to the rear end of the plug can be extruded and fixed, the fixing strength of the signal wire is improved, and the signal wire is prevented from loosening.

Drawings

FIG. 1 is an overall structural view of a lightning protection signal line according to the present invention;

FIG. 2 is a cross-sectional view of a lightning protected signal wire of the present invention;

FIG. 3 is a cross-sectional view of a plug and a mating tube in a lightning protected signal wire of the present invention;

fig. 4 is a structural diagram of a butt joint pipe in the lightning protection signal wire of the utility model.

In the figure: 1. a PVC sheath; 2. a joint; 3. a plug; 4. a core wire; 5. a polyethylene jacket; 6. an anti-interference metal shielding net; 7. a connecting ring; 8. a tapered tube; 9. butt-joint pipes; 10. a tapered barrel; 11. an elastic sheet.

Detailed Description

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

In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

Referring to fig. 1 and 2, the lightning protection signal line includes a PVC sheath 1, a plurality of core wires 4 are disposed inside the PVC sheath, a polyethylene sheath 5 is sleeved outside the core wires 4, the PVC sheath 1 is sleeved outside the plurality of core wires 4, wherein,

the inner wall of the PVC sheath 1 is provided with an aluminum film, the outer side of the aluminum film is provided with an anti-interference metal shielding net 6 formed by weaving metal wires, and a polyester film is bonded outside the anti-interference metal shielding net 6.

Referring to fig. 2, the exterior of the PVC sheath 1 is sleeved with a stainless steel shielding mesh.

Referring to fig. 1, 3 and 4, one end of the PVC sheath 1 is connected with the connector 2, the other end is connected with the plug 3, the plug 3 comprises a connection ring 7 movably connected to the outside of the plug 3 and a butt joint pipe 9 inserted at the rear end of the plug 3, and an elastic piece 11 arranged at the front end of the butt joint pipe 9 is in threaded connection with the tapered pipe 8 connected to the inside of the connection ring 7.

Referring to fig. 3 and 4, the tapered tube 8 is conical, the elastic piece 11 provided at the front end of the butt pipe 9 is tapered, and the outer portion of the elastic piece 11 and the inner wall of the tapered tube 8 are provided with threads corresponding to each other.

Referring to fig. 3 and 4, a conical tapered cylinder 10 is connected to the rear end of the butt-joint pipe 9, and the tapered cylinder 10 is sleeved on one end of the PVC sheath 1.

Referring to fig. 3, a plurality of sets of rubber protrusions are adhered to the inner wall of the butt pipe 9.

Referring to fig. 1 and 3, the outside of the connection ring 7 is provided with anti-slip threads, the outside of the anti-interference metal shielding net 6 is provided with a grounding copper wire for grounding the anti-interference metal shielding net, and the stainless steel shielding net and the grounding copper wire are both connected with the outer wall of the plug 3.

During production, firstly, a signal wire with a specified degree is inserted into the butt joint pipe 9 from the rear end of the conical cylinder 10, so that the signal wire is positioned between the multiple groups of elastic pieces 11, after the completion, the core wire 4 arranged inside the PVC sheath 1 is connected with the inside of the plug 3, after the completion, the connecting ring 7 is rotated, so that the connecting ring 7 drives the conical pipe 8 inside the connecting ring 7 to synchronously rotate, and as the threads are arranged between the elastic pieces 11 at the front end of the butt joint pipe 9 and the inner wall of the conical pipe 8, the butt joint pipe 9 can be driven to move towards the plug 3 when the conical pipe 8 rotates, and as the conical pipe 8 is conical, when the elastic pieces 11 move towards the inside of the plug 3, the signal wire can be extruded towards the signal wire inside the plug, so that the signal wire is clamped by the elastic pieces 11 and fixed inside the plug 3, and the signal wire is placed to slide, thereby improving the stability of signal wire fixation.

When the current contacts the signal wire, the signal wire is firstly contacted with the stainless steel shielding net outside the PVC sheath 1 and conducted to the ground along the stainless steel shielding net, so that the current is guided to the ground.

When the electric current volume is great, puncture PVC sheath 1, through the protection of PVC sheath 1, will alleviate the electric current, later with the contact of 1 inside anti-interference metallic shield net of PVC sheath 6 again to conduct ground along the outside ground connection copper wire of anti-interference metallic shield net 6, thereby guide the electric current to ground, play double-deck protection.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The lightning protection signal wire is characterized by comprising a PVC sheath (1), wherein a plurality of groups of core wires (4) are arranged in the PVC sheath, a polyethylene sheath (5) is sleeved outside the core wires (4), the PVC sheath (1) is sleeved outside the core wires (4), wherein,

one end of the PVC sheath (1) is connected with the connector (2), the other end of the PVC sheath is connected with the plug (3), the plug (3) comprises a connecting ring (7) movably connected to the outside of the plug (3) and a butt joint pipe (9) inserted at the rear end of the plug (3), and an elastic sheet (11) arranged at the front end of the butt joint pipe (9) is in threaded connection with a conical pipe (8) connected to the inside of the connecting ring (7).

2. The lightning protection signal wire of claim 1, wherein: the inner wall of the PVC sheath (1) is provided with an aluminum film, the outer side of the aluminum film is provided with an anti-interference metal shielding net (6) formed by weaving metal wires, and a polyester film is bonded outside the anti-interference metal shielding net (6).

3. The lightning protection signal wire of claim 2, wherein: the outside cover of PVC sheath (1) is equipped with stainless steel shielding net.

4. The lightning protection signal wire of claim 1, wherein: the conical pipe (8) is conical, the elastic sheet (11) arranged at the front end of the butt joint pipe (9) is wound into a cone, and the outer part of the elastic sheet (11) and the inner wall of the conical pipe (8) are provided with corresponding threads.

5. The lightning protection signal wire of claim 3, wherein: the rear end of the butt joint pipe (9) is connected with a conical tapered cylinder (10), and the tapered cylinder (10) is sleeved at one end of the PVC sheath (1).

6. The lightning protection signal wire of claim 3, wherein: the inner wall of the butt joint pipe (9) is bonded with a plurality of groups of rubber bulges.

7. The lightning protection signal wire of claim 3, wherein: the anti-skid metal shielding net is characterized in that anti-skid threads are arranged on the outer portion of the connecting ring (7), and a grounding copper wire used for grounding the anti-skid metal shielding net is arranged on the outer portion of the anti-jamming metal shielding net (6).