CN213545959U

CN213545959U - Flame-retardant transmission signal cable for safety explosion-proof circuit

Info

Publication number: CN213545959U
Application number: CN202023066225.7U
Authority: CN
Inventors: 李毅磊
Original assignee: Tong Cable Electric Co ltd
Current assignee: Tong Cable Electric Co ltd
Priority date: 2020-12-18
Filing date: 2020-12-18
Publication date: 2021-06-25
Anticipated expiration: 2030-12-18

Abstract

The utility model belongs to the technical field of the signal cable technique and specifically relates to a safe explosion-proof circuit is with fire-retardant type transmission signal cable, including stranded signal line, it is a plurality of the signal line sets up in the internal shield layer, it has the intussuseption layer to fill in the inner chamber on internal shield layer, and stranded signal line wraps up in including the filling layer, the outer wall cladding on internal shield layer has the internal insulation layer, the outer wall cladding of internal insulation layer has cable jacket layer, multichannel wire casing has been seted up to the outer wall of cable jacket layer into the fork form, be provided with the metal wire in the inner chamber of wire casing, the mount pad is installed to the junction on cable jacket layer, and this safe explosion-proof circuit has realized inside with fire-retardant type transmission signal cable and outside explosion-proof processing simultaneously, sets up inorganic mineral substance as the intussuseption layer in the cable, effectively promotes the fire behavior of cable for this cable has, And (4) flame retardant performance.

Description

Flame-retardant transmission signal cable for safety explosion-proof circuit

Technical Field

The utility model relates to a signal cable technical field especially relates to a safe explosion-proof circuit is with fire-retardant type transmission signal cable.

Background

The explosion-proof cable is characterized in that when a short circuit or electric spark occurs on a line, surrounding flammable and explosive gas cannot be ignited sufficiently. The explosion-proof cable has the characteristics of low capacitance, difficult charge storage, good shielding performance and antistatic performance. In the production process, the explosion-proof cable is mainly used for communication, monitoring, detection, alarming and control systems. The existing explosion-proof signal cable is shielded from the inside, can prevent electromagnetic signals inside from overflowing, but cannot well prevent external static interference, still can generate electric sparks under a specific environment, and has the defect of insufficient safety performance.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a flame-retardant transmission signal cable for a safety explosion-proof circuit.

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

a flame-retardant transmission signal cable for a safety explosion-proof circuit is designed, which comprises a plurality of signal wires arranged in an inner shielding layer, an inner filling layer is filled in the inner cavity of the inner shielding layer, a plurality of strands of signal wires are wrapped in the inner filling layer, the outer wall of the inner shielding layer is coated with an inner insulating layer, the outer wall of the inner insulating layer is coated with a cable outer sleeve layer, the outer wall of the cable jacket layer is provided with a plurality of wire grooves in a cross shape, metal wires are arranged in the inner cavities of the wire grooves, the joint of the cable jacket layer is provided with a mounting seat, the mounting seat comprises a metal seat and a pair of locking hoops arranged above the metal seat, the metal base is fastened and connected on the wall body through a screw, the cable jacket layer passes through the locking hoop, a plurality of screw holes are uniformly formed in the outer wall of the locking hoop, and the end portion of the metal wire is inserted into the screw holes and is fastened through screws.

Preferably, the wire groove is filled with conductive adhesive, and the metal wire is embedded in the wire groove and immersed in the conductive adhesive.

Preferably, the inner filling layer is an inorganic mineral filling layer, and the inner insulating layer is a refractory fiber cloth winding layer.

The utility model provides a pair of safe explosion-proof circuit is with fire-retardant type transmission signal cable, beneficial effect lies in: through setting up the electromagnetic signal interference that the internal shield layer can shield cable inside and outside, set up the wire casing at the outer wall of cable overcoat layer, and imbed the linear latticed external shield net that forms of metal wire in the wire casing, pass through metal base ground connection to whole shielding net simultaneously and handle, the effectual accumulation of having avoided the outside static of cable, inside has been realized, and the outside is explosion-proof simultaneously, set up inorganic mineral substance as the interior filling layer of cable, effectively promote the fire behavior of cable, make the current ordinary cable of this cable contrast have good explosion-proof, flame retardant property.

Drawings

Fig. 1 is a schematic structural diagram of a flame-retardant transmission signal cable for a safety explosion-proof circuit according to the present invention;

fig. 2 is a cross-sectional view of a flame-retardant transmission signal cable for a safety explosion-proof circuit according to the present invention;

fig. 3 is the utility model provides a metal base structure sketch map of fire-retardant type transmission signal cable for safe explosion-proof circuit.

In the figure: the cable comprises a mounting seat 1, a cable outer sleeve layer 2, a wire groove 3, a metal wire 4, an inner insulating layer 5, an inner shielding layer 6, a metal seat 7, an inner filling layer 8, a signal wire 9, a locking hoop 10 and a screw hole 11.

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.

Referring to fig. 1 to 3, a flame retardant transmission signal cable for a safety explosion-proof circuit includes a plurality of signal lines 9, the plurality of signal lines 9 are disposed in an inner shield layer 6, the inner cavity of the inner shielding layer 6 is filled with an inner filling layer 8, a plurality of signal wires 9 are wrapped in the inner filling layer 8, the outer wall cladding of inner shield layer 6 has inner insulating layer 5, the outer wall cladding of inner insulating layer 5 has cable outer jacket layer 2, multichannel wire casing 3 has been seted up to cable outer jacket layer 2's outer wall into the fork form, be provided with wire 4 in the inner chamber of wire casing 3, mount pad 1 is installed to cable outer jacket layer 2's junction, mount pad 1 includes metal base 7 and installs a pair of locking hoop 10 in metal base 7 top, metal base 7 passes through screw fastening connection on the wall body, cable outer jacket layer 2 passes locking hoop 10, a plurality of screw holes 11 have evenly been seted up to locking hoop 10's outer wall, the tip of wire 4 inserts screw hole 11 and passes through screw fastening.

The conductive adhesive is injected into the wire slot 3, the metal wire 4 is embedded into the wire slot 3 and immersed into the conductive adhesive, the inner filling layer 8 is an inorganic mineral filling layer, the inner insulating layer is a fire-resistant fiber cloth winding layer, the set inner shielding layer 6 can shield the electromagnetic signal interference inside and outside the cable, the wire slot 3 is arranged on the outer wall of the cable outer sleeve layer, the metal wire 4 is embedded into the wire slot 3 to form a latticed external shielding net, meanwhile, the whole shielding net is grounded through a metal seat, the accumulation of static electricity outside the cable is effectively avoided, the inside and the outside are subjected to explosion-proof treatment simultaneously, the inorganic mineral is set as the cable inner filling layer, 8 the fireproof performance of the cable is effectively improved, and the cable has good explosion-proof performance and flame-retardant performance compared with the conventional common cable.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a safe flame retardant type transmission signal cable for explosion-proof circuit, includes stranded signal line (9), its characterized in that, a plurality of signal line (9) set up in internal shield layer (6), it has interior filling layer (8) to fill in the inner chamber of internal shield layer (6), and stranded signal line (9) parcel is in internal filling layer (8), the outer wall cladding of internal shield layer (6) has internal insulation layer (5), the outer wall cladding of internal insulation layer (5) has cable overcoat layer (2), multichannel wire casing (3) have been seted up to the outer wall of cable overcoat layer (2) into the fork form, be provided with metal wire (4) in the inner chamber of wire casing (3), mount pad (1) is installed to the junction of cable overcoat layer (2), mount pad (1) includes metal base (7) and installs a pair of locking hoop (10) in metal base (7) top, the metal base (7) is connected to a wall body through screw fastening, the cable outer sleeve layer (2) penetrates through the locking hoop (10), a plurality of screw holes (11) are uniformly formed in the outer wall of the locking hoop (10), and the end portion of the metal wire (4) is inserted into the screw holes (11) and is fastened through screws.

2. The flame-retardant transmission signal cable for the safety explosion-proof circuit according to claim 1, wherein the wire groove (3) is filled with a conductive adhesive, and the metal wire (4) is embedded in the wire groove (3) and immersed in the conductive adhesive.

3. The flame retardant transmission signal cable for a safety explosion-proof circuit according to claim 1, wherein the inner filling layer (8) is an inorganic mineral filling layer, and the inner insulating layer is a fire-resistant fiber cloth winding layer.