CN210896707U

CN210896707U - Stretch-proof flame-retardant water-blocking cable

Info

Publication number: CN210896707U
Application number: CN201921957319.8U
Authority: CN
Inventors: 王佳伟; 杨洪新; 王军
Original assignee: Jiangsu Hongfeng Cable Group Co ltd
Current assignee: Jiangsu Hongfeng Cable Group Co ltd
Priority date: 2019-11-13
Filing date: 2019-11-13
Publication date: 2020-06-30
Anticipated expiration: 2029-11-13

Abstract

The utility model discloses a stretch-proof flame-retardant water-blocking cable, which comprises a protective tube, wherein the inner part of the protective tube is provided with three conductors, the conductors are provided with an elastic rubber inner frame, the elastic rubber inner frame comprises a rubber strip, the rubber strip is positioned in the middle of the three conductors, the positions corresponding to the conductors on the rubber strip are provided with conductor protective tubes, the conductor protective tubes are wrapped on the outer part of the conductors, the junction of the rubber strip and the conductor protective tubes is provided with a hollow part, the two ends of the hollow part are both provided with V-shaped folding parts, the elastic rubber inner frame is arranged, when the external pressure is directly pressed to the circle center of the rubber strip, the rubber strip can be extruded to the inner part of the hollow hole, a buffer effect can be provided for the conductors, when the extrusion force deviates from the circle center of the rubber strip, the conductor protective tubes and the conductors can be in a skew condition, the V-shaped folding part can compensate the distortion amount so as to ensure that the conductor has pressure resistance in any direction.

Description

Stretch-proof flame-retardant water-blocking cable

Technical Field

The utility model relates to the technical field of cables, specifically a stretch-proof fire-retardant cable that blocks water.

Background

A cable, made of one or more mutually insulated conductors and an outer insulating sheath, transmits power or information from one point to another. The cable includes power cable, control cable, compensation cable, shielding cable, high-temperature cable, computer cable, signal cable, coaxial cable, fire-resistant cable, marine cable, mining cable, aluminum alloy cable and the like. They are composed of single or multi-strand wires and insulating layers, and are used for connecting circuits, electric appliances and the like. Cables are generally rope-like cables made by stranding several or groups of conductors (at least two in each group), each group being insulated from each other and often twisted around a center, the entire outer surface being coated with a highly insulating coating. The cable has the characteristics of internal electrification and external insulation;

the existing cable guarantees its resistant performance of drawing in order to adapt to the general installation strengthening rib of operational environment to installation waterproof layer and fire-retardant layer protect the cable core, but its inside anti extrusion ability is not strong under this kind of resistant drawing can fire-retardant waterproof cable general condition, also proposes in the present patent to set up a cushion chamber and solves this problem, but the cushion chamber can only cushion the extrusion force of extrusion force towards cable centre of a circle department, to the extrusion force that has positional deviation, it is difficult to the buffering.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a resistant fire-retardant cable that blocks water that draws to it is strong to resistant drawing can fire-retardant waterproof cable its inside anti extrusion ability under the general condition among the solution prior art, proposes in the present patent also to set up a cushion chamber and solves this problem, but the cushion chamber only can cushion the extrusion force of extrusion force towards cable centre of a circle department, and to the extrusion force that has positional deviation, its problem that is difficult to the buffering.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a stretch-proof fire-retardant cable that blocks water, includes the protection tube, the inside of protection tube is provided with the conductor, and the conductor is provided with threely altogether, and installs the elastic rubber inner tower on the conductor, the elastic rubber inner tower includes the rubber strip, the rubber strip is located the middle part of three conductor, the position that corresponds with the conductor on the rubber strip is provided with the conductor protection tube, and conductor protection tube parcel is in the outside of conductor, well kenozooecium has been seted up with conductor protection tube handing-over department to the rubber strip, the both ends of well kenozooecium all are provided with the folding portion of V type, the outer lane of protection tube all is provided with the tensile strengthening rib, adjacent two be fixed.

Preferably, a filler is filled between the outer surface of the elastic rubber inner frame and the protection pipe.

Preferably, the conductor comprises a main body and an insulating layer, and the insulating layer wraps the outer surface of the main body.

Preferably, the middle hole is arranged in the middle of the inner part of the rubber strip.

Preferably, the vulcanized rubber retainer and the tensile reinforcing rib are externally provided with a flame-retardant layer, and the flame-retardant layer is externally provided with a waterproof layer.

Preferably, an outer protective shell is arranged outside the waterproof layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model is provided with the vulcanized rubber retainer, when the external extrusion force exists, the vulcanized rubber retainer can play a role of primary anti-extrusion, so as to ensure the shape of the device;

2. the utility model discloses set up the elastic rubber inner frame, when external pressure was the centre of a circle that directly presses to the rubber strip, the rubber strip can be extruded mesopore inside, can give buffer action of conductor this moment, when the centre of a circle of this extrusion force skew rubber strip, the crooked condition can take place for conductor protection pipe and conductor this moment, and this crooked volume can be compensated to V type folding portion to guarantee that the conductor all has compressive capacity in arbitrary direction.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the elastic rubber inner frame of the present invention.

In the figure: 1. an outer protective shell; 2. a waterproof layer; 3. a flame retardant layer; 4. a tensile reinforcing rib; 5. a vulcanized rubber retainer; 6. protecting the tube; 7. a filler; 8. a conductor; 81. a main body; 82. an insulating layer; 9. an elastic rubber inner frame; 91. a rubber strip; 92. a V-shaped folded portion; 93. a hollow part; 94. a mesopore; 95. a conductor protection tube.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are 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. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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, in an embodiment of the present invention, a stretch-proof flame-retardant water-blocking cable includes a protection tube 6, three conductors 8 are disposed inside the protection tube 6, an elastic rubber inner frame 9 is mounted on the conductors 8, a filler 7 is filled between an outer surface of the elastic rubber inner frame 9 and the protection tube 6, the filler 7 should be glass fiber or hemp rope, and the elastic rubber inner frame 9 can resist extrusion of the conductors 8;

as shown in fig. 2, the conductor 8 includes a main body 81 and an insulating layer 82, the insulating layer 82 wraps the outer surface of the main body 81, and the insulating layer 82 plays a role of insulating to protect the main body 81 and avoid electric leakage;

as shown in fig. 1, tensile reinforcing ribs 4 are arranged on outer rings of the protection tubes 6, a vulcanized rubber retainer 5 is fixed between two adjacent tensile reinforcing ribs 4, the vulcanized rubber retainer 5 is arranged at a certain distance in the length direction of the tensile reinforcing ribs 4, for example, a circle of vulcanized rubber retainer 5 can be arranged at intervals of 10 cm, and the vulcanized rubber retainer 5 can play a role in buffering on one hand and an anti-extrusion function on the other hand;

as shown in fig. 1, a flame-retardant layer 3 is arranged outside a vulcanized rubber retainer 5 and a tensile reinforcing rib 4, a waterproof layer 2 is arranged outside the flame-retardant layer 3, an outer protective shell 1 is arranged outside the waterproof layer 2, the flame-retardant layer 3 is flame-retardant by halogen, and the waterproof layer 2 is made of polyurethane, so that a waterproof effect is achieved;

as shown in fig. 2, the elastic rubber inner frame 9 includes a rubber strip 91, a middle hole 94 is provided in the middle of the rubber strip 91, the middle hole 94 is used as a buffer space during extrusion, the rubber strip 91 is located in the middle of three conductors 8, the rubber strip 91 is used as a main pressed component, a conductor protection tube 95 is provided on the rubber strip 91 at a position corresponding to the conductor 8, the conductor protection tube 95 can further protect the conductor 8, which is also made of elastic rubber, and the conductor protection tube 95 is wrapped outside the conductor 8, a hollow part 93 is provided at the junction of the rubber strip 91 and the conductor protection tube 95, V-shaped folding parts 92 are provided at both ends of the hollow part 93, when the external pressure direction is not directly toward the center of the rubber strip 91, the conductor protection tube 95 and the conductor 8 can be distorted, at this time, the V-shaped folding parts 92 can compensate the distortion amount to ensure that the conductor 8 has a pressure resistance in any direction, when the external pressure is applied, the vulcanized rubber retainer 5 can play a role of primary anti-extrusion, when the pressure is directly applied to the center of the rubber strip 91, the rubber strip 91 can be extruded into the center hole 94, a buffer function can be provided for the conductor 8, when the extrusion force deviates from the center of the rubber strip 91, the conductor protection tube 95 and the conductor 8 can be distorted, and the V-shaped folding part 92 can compensate the distortion amount so as to ensure that the conductor 8 has the pressure resistance in any direction; tensile strengthening rib 4 can play tensile effect, and waterproof layer 2 can play waterproof effect, and 3 groups on fire-retardant layer play fire-retardant effect.

The utility model discloses a theory of operation and use flow: when the device is used, when the external pressure is applied, the vulcanized rubber retainer 5 can play a role of primary anti-extrusion, when the pressure is directly applied to the center of the rubber strip 91, the rubber strip 91 can be extruded into the center hole 94, a buffer effect can be provided for the conductor 8, when the extrusion force deviates from the center of the rubber strip 91, the conductor protection tube 95 and the conductor 8 can be distorted, and the V-shaped folding part 92 can compensate the distortion amount so as to ensure that the conductor 8 has the pressure resistance in any direction;

tensile strengthening rib 4 can play tensile effect, and waterproof layer 2 can play waterproof effect, and 3 groups on fire-retardant layer play fire-retardant effect.

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 utility model provides a stretch-proof fire-retardant cable that blocks water, includes protection tube (6), its characterized in that: the inner part of the protection tube (6) is provided with three conductors (8), and the number of the conductors (8) is three, and the conductor (8) is provided with an elastic rubber inner frame (9), the elastic rubber inner frame (9) comprises a rubber strip (91), the rubber strip (91) is positioned in the middle of the three conductors (8), a conductor protection tube (95) is arranged on the rubber strip (91) corresponding to the conductors (8), the conductor protection tube (95) is wrapped outside the conductor (8), a hollow part (93) is arranged at the joint of the rubber strip (91) and the conductor protection tube (95), the two ends of the hollow part (93) are provided with V-shaped folding parts (92), the outer ring of the protection tube (6) is provided with tensile reinforcing ribs (4), and a vulcanized rubber retainer (5) is fixed between every two adjacent tensile reinforcing ribs (4).

2. A stretch-resistant flame-retardant water-blocking cable according to claim 1, wherein: and a filler (7) is filled between the outer surface of the elastic rubber inner frame (9) and the protection pipe (6).

3. A stretch-resistant flame-retardant water-blocking cable according to claim 1, wherein: the conductor (8) comprises a main body (81) and an insulating layer (82), wherein the insulating layer (82) wraps the outer surface of the main body (81).

4. A stretch-resistant flame-retardant water-blocking cable according to claim 1, wherein: the middle of the inner part of the rubber strip (91) is provided with a middle hole (94).

5. A stretch-resistant flame-retardant water-blocking cable according to claim 1, wherein: and the outsides of the vulcanized rubber retainer (5) and the tensile reinforcing ribs (4) are provided with flame-retardant layers (3), and the outsides of the flame-retardant layers (3) are provided with waterproof layers (2).

6. A stretch-resistant flame-retardant water-blocking cable according to claim 5, wherein: an outer protective shell (1) is arranged outside the waterproof layer (2).