High-temperature-resistant fireproof cable

Abstract

The utility model relates to the technical field of high-temperature-resistant fireproof cables, in particular to a high-temperature-resistant fireproof cable, which comprises a cable core, a fireproof layer coated on the outer side of an insulating sleeve, a flame-retardant belt coated on the outer side of the fireproof layer, a heat-conducting strip arranged on the outer side of the flame-retardant belt, a torsion-resistant layer coated on the outer side of the flame-retardant belt, and a heat-conducting strip arranged on the outer side of the torsion-resistant layer. The outer side of the anti-torsion layer is coated with a water-blocking tape, and the outer side of the water-blocking tape is coated with a waterproof coating. According to the high-temperature-resistant fireproof cable, the fireproof layer wraps the outer side of the insulating sleeve wrapping the cable core, the chloroprene rubber skin layer structure doped with the halogen flame retardant is used for providing a first fireproof defense line for the inner layer structure of the cable, and then the flame-retardant belt is wrapped, so that the flame-retardant capability of the fireproof layer is further improved; and meanwhile, the heat-conducting strips distributed in an array are attached to the heat-conducting notches of the fireproof layer and the flame-retardant belt, so that heat accumulated in the cable can be quickly conducted and discharged, and the possibility that the interior of the cable is overheated and is on fire is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a high temperature resistant and fireproof cable. Background Art

[0002] Cable is an electric energy or signal transmission device, which is usually composed of several or several groups of wires, and has the characteristics of internal current conduction and external insulation. It is mainly used to transmit electrical (magnetic) energy and information and realize electromagnetic energy conversion. Therefore, it is widely used in urban underground power grids, power station lead-out lines, internal power supply of industrial and mining enterprises, and underwater transmission lines across rivers and seas.

[0003] After searching, a high temperature resistant and fireproof cable is disclosed in a utility model patent with Chinese patent publication number CN219979163U. The high temperature resistant and fireproof cable in the utility model patent is an insulating retainer with multiple positioning grooves designed to provide good support for each conductor core in the metal sheath. However, the cable structure does not have relevant fireproof components. When the cable is transmitting and running, a large amount of heat will be generated inside, especially in a hot environment, overheating and fire may easily occur inside the cable. Therefore, the flame retardant and fireproof effect of the cable needs to be further improved, so a high temperature resistant and fireproof cable is proposed. Utility Model Content

[0004] In view of this, the purpose of the utility model is to provide a high temperature resistant fireproof cable to solve the problem that the high temperature resistant fireproof cable in the comparative document of the above background technology lacks a fireproof structure and cannot effectively prevent overheating and fire inside the cable.

[0005] Based on the above purpose, the utility model provides a high temperature resistant fireproof cable, comprising a cable core, the outer side of the cable core is coated with a filling layer, the outer side of the filling layer is coated with an insulating sleeve, and the outer side of the insulating sleeve is provided with a flame retardant fireproof structure;

[0006] The flame retardant and fireproof structure includes a fireproof layer, a flame retardant tape, a thermal conductive strip, an anti-torsion layer, a water-blocking tape and a waterproof coating; the outer side of the insulating sleeve is coated with a fireproof layer, the outer side of the fireproof layer is coated with a flame retardant tape, the outer side of the flame retardant tape is provided with a thermal conductive strip, the outer side of the flame retardant tape is coated with an anti-torsion layer, the outer side of the anti-torsion layer is coated with a water-blocking tape, and the outer side of the water-blocking tape is coated with a waterproof coating.

[0007] Furthermore, the filling layer is a glass fiber rope structure, the outside of the glass fiber rope is woven with inorganic paper tape, the cable core is a pure copper wire structure and is evenly distributed in a ring array inside the filling layer, and the insulating sleeve is a rubber cortex structure.

[0008] Furthermore, the fireproof layer is a neoprene rubber layer, and four No. 1 heat-conducting grooves are provided on the inner side of the fireproof layer.

[0009] Furthermore, the flame retardant belt is a high-silica fireproof cloth layer structure, and four No. 2 heat-conducting slots are reserved on the inner side of the flame retardant belt, and the inner side of each No. 2 heat-conducting slot is respectively fitted with each No. 1 heat-conducting slot.

[0010] Furthermore, there are four thermally conductive strips, all of which are made of thermal grease. The four thermally conductive strips are evenly distributed in a circular array on the outside of the flame retardant belt, and the inner sides of the four thermally conductive strips are respectively fitted with the outer sides of the four No. 2 thermally conductive slots.

[0011] Furthermore, the anti-torsion and tensile layer is a galvanized soft steel wire layer structure, and four No. 3 heat-conducting slots are reserved on the inner side of the anti-torsion and tensile layer. The outer sides of the four thermal conductive strips are respectively fitted with the four No. 3 heat-conducting slots, and the waterproof coating is a self-adhesive rubber asphalt waterproof coating structure.

[0012] The beneficial effects of the utility model are as follows: the high-temperature resistant and fireproof cable is provided with a first fireproof line for the inner structure of the cable by coating a fireproof layer on the outer side of the insulating sheath wrapping the cable core, and then a layer of flame retardant tape is coated to further improve the flame retardancy of the fireproof layer. At the same time, the array-distributed heat-conducting strips are fitted with the heat-conducting grooves of the fireproof layer and the flame retardant tape, so that the heat accumulated inside can be quickly conducted and discharged, thereby effectively reducing the possibility of overheating and fire inside the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A three-dimensional schematic diagram of a cable cross section in an embodiment of the utility model;

[0015] Figure 2 for Figure 1 Front view of perspective;

[0016] Figure 3 for Figure 2 Schematic diagram of the local structure in perspective.

[0017] The markings in the figure are:

[0018] 1. Cable core; 2. Filling layer; 3. Insulation sleeve; 4. Flame retardant and fireproof structure; 401. Fireproof layer; 402. Flame retardant tape; 403. Thermal conductive strip; 404. Anti-torsion layer; 405. Water-blocking tape; 406. Waterproof coating. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0020] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] See also Figure 1-3 A high temperature resistant and fireproof cable comprises a cable core 1, the outer side of the cable core 1 is coated with a filling layer 2, the outer side of the filling layer 2 is coated with an insulating sleeve 3, and the outer side of the insulating sleeve 3 is provided with a flame retardant and fireproof structure 4.

[0022] The flame retardant and fireproof structure 4 includes a fireproof layer 401, a flame retardant tape 402, a thermal conductive strip 403, an anti-torsion layer 404, a water-blocking tape 405 and a waterproof coating 406. The outer side of the insulating sleeve 3 is coated with the fireproof layer 401, the outer side of the fireproof layer 401 is coated with the flame retardant tape 402, the outer side of the flame retardant tape 402 is provided with a thermal conductive strip 403, the outer side of the flame retardant tape 402 is coated with the anti-torsion layer 404, the outer side of the anti-torsion layer 404 is coated with the water-blocking tape 405, and the outer side of the water-blocking tape 405 is coated with a waterproof coating 406.

[0023] like Figure 2 and Figure 3 As shown, the filling layer 2 is a glass fiber rope structure, and an inorganic paper tape with a ceramic fiber layer is woven outside the glass fiber rope. The insulating sleeve 3 with a rubber skin structure can improve the stability and insulation effect of the internal cable core 1.

[0024] like Figure 2 and Figure 3 As shown, the fireproof layer 401 is a chloroprene rubber skin structure. Adding a halogen flame retardant of a mixed coating of decabromodiphenyl ether and chlorinated paraffin into the chloroprene rubber skin structure can improve the flame retardant effect of the chloroprene rubber skin and provide the first fire protection line for the internal cable core 1.

[0025] like Figure 2 and Figure 3 As shown, the flame retardant tape 402 is a high-silica fireproof cloth layer structure. The high-silica fireproof cloth layer has excellent fireproof ability and can serve as the second fireproof line of the cable core 1. At the same time, the four No. 1 heat-conducting grooves reserved on the inner side of the fireproof layer 401 correspond to the four No. 2 heat-conducting grooves reserved on the inner side of the flame retardant tape 402, respectively, so that the fireproof layer 401 and the flame retardant tape 402 can discharge the internal accumulated heat in time.

[0026] like Figure 2 and Figure 3 As shown, four heat-conducting strips 403 of a heat-conducting silicone grease structure are evenly distributed on the outside of the flame-retardant tape 402, and the inner side of each heat-conducting strip 403 is respectively fitted with each No. 2 heat-conducting slot, so as to quickly conduct heat.

[0027] like Figure 2 and Figure 3 As shown, the torsion-resistant layer 404 adopts a galvanized soft steel wire layer structure, which can improve the tensile strength of the cable body and increase the compressive strength of the cable. The heat is then discharged by the heat conductive strip 403 through the No. 3 heat conductive slot on the torsion-resistant layer 404. The water-blocking tape 405 is an expanded rubber layer structure containing an inorganic water-absorbing material, which can expand with water to form a tight isolation belt to isolate external water vapor, and a sticky rubber asphalt waterproof coating layer is used to increase the waterproof effect of the water-blocking tape 405.

[0028] In summary, the high-temperature resistant fireproof cable, by coating the fireproof layer 401 on the outside of the insulating sheath 3 wrapping the cable core 1, uses the chloroprene rubber cortex structure added with halogen flame retardant to provide the first fire protection line for the cable inner structure, and then coats it with a layer of flame retardant tape 402 to further improve the flame retardancy of the fireproof layer 401, and at the same time, the array-distributed heat-conducting strips 403 are fitted with the heat-conducting grooves of the fireproof layer 401 and the flame retardant tape 402, so that the heat accumulated inside can be quickly conducted and discharged, thereby effectively reducing the possibility of overheating and fire inside the cable, and at the same time, the anti-torsion and tension layer 404 is used to improve the tensile strength of the cable, and the water-blocking tape 405 that swells when exposed to water and the waterproof coating 406 structure are coated on the outside of the anti-torsion and tension layer 404, which can improve the waterproof effect of the cable and increase the durability of the cable to the stimulation of external environmental factors.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0030] The utility model is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the scope of protection of the utility model.

Claims

1. A high temperature resistant and fireproof cable, comprising a cable core (1), characterized in that: The outer side of the cable core (1) is coated with a filling layer (2), the outer side of the filling layer (2) is coated with an insulating sleeve (3), and the outer side of the insulating sleeve (3) is provided with a flame retardant and fireproof structure (4); The flame retardant and fireproof structure (4) comprises a fireproof layer (401), a flame retardant tape (402), a heat conductive strip (403), an anti-torsion layer (404), a water blocking tape (405) and a waterproof coating (406); the outer side of the insulating sleeve (3) is coated with the fireproof layer (401); the outer side of the fireproof layer (401) is coated with the flame retardant tape (402); the outer side of the flame retardant tape (402) is provided with a heat conductive strip (403); the outer side of the flame retardant tape (402) is coated with the anti-torsion layer (404); the outer side of the anti-torsion layer (404) is coated with the water blocking tape (405); and the outer side of the water blocking tape (405) is coated with a waterproof coating (406).

2. The high temperature resistant and fireproof cable according to claim 1, characterized in that: The filling layer (2) is a glass fiber rope structure, the outside of the glass fiber rope is woven with inorganic paper tape, the cable core (1) is a pure copper wire structure and is evenly distributed in a ring array inside the filling layer (2), and the insulating sleeve (3) is a rubber cortex structure.

3. The high temperature resistant and fireproof cable according to claim 1, characterized in that: The fireproof layer (401) is a neoprene rubber layer, and four No. 1 heat-conducting slots are provided on the inner side of the fireproof layer (401).

4. The high temperature resistant and fireproof cable according to claim 3, characterized in that: The flame retardant belt (402) is a high-silicon fireproof cloth layer structure, and four No. 2 heat-conducting slots are reserved on the inner side of the flame retardant belt (402), and the inner side of each No. 2 heat-conducting slot is respectively fitted with each No. 1 heat-conducting slot.

5. The high temperature resistant and fireproof cable according to claim 4, characterized in that: There are four thermally conductive strips (403), all of which are made of thermally conductive silicone grease. The four thermally conductive strips (403) are evenly distributed in a ring array on the outside of the flame retardant belt (402), and the inner sides of the four thermally conductive strips (403) are respectively fitted with the outer sides of the four No. 2 thermally conductive slots.

6. The high temperature resistant and fireproof cable according to claim 1, characterized in that: The anti-torsion and tension layer (404) is a galvanized soft steel wire layer structure, and four No. 3 heat conduction slots are reserved on the inner side of the anti-torsion and tension layer (404), and the outer sides of the four heat conduction strips (403) are respectively fitted with the four No. 3 heat conduction slots, and the waterproof coating (406) is a self-adhesive rubber asphalt waterproof coating structure.

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