High-temperature-resistant composite multi-core cable

Abstract

The utility model belongs to the technical field of multi-core cables, in particular to a high-temperature-resistant composite multi-core cable, which comprises a cable main body and protective shells arranged at two ends of the cable main body, the cable main body comprises a rubber insulating layer, a metal woven mesh layer is connected inside the rubber insulating layer, a honeycomb sheath is connected inside the metal woven mesh layer, and the honeycomb sheath is connected inside the metal woven mesh layer. The interior of the honeycomb sheath is connected with an isolation layer, the interior of the isolation layer is connected with a waterproof layer, the interior of the waterproof layer is connected with a flame-retardant layer, a plurality of rubber strips are arranged on the inner wall of the flame-retardant layer in a penetrating mode, the interiors of the rubber strips are connected with supporting rings, and the interiors of the supporting rings are connected with barrier reinforcing ribs. According to the utility model, through the flame-retardant layer, aluminum hydroxide is decomposed to absorb heat, an aluminum oxide barrier layer is generated, zinc borate and nano clay are matched to promote char formation and inhibit smoldering for flame retardance, and through the supporting rings and the barrier reinforcing ribs, the internal tensile and compressive strength is improved, and the problem that the internal flame retardance and compressive strength of the cable are poor is solved.

Description

Technical Field

[0001] This utility model belongs to the field of multi-core cable technology, specifically a high-temperature resistant composite multi-core cable. Background Technology

[0002] Cables are typically rope-like structures made of several or groups of conductors twisted together. Each group of conductors is insulated from the others and is often twisted around a central conductor, with the entire structure covered by a highly insulating outer layer. Cables are characterized by being internally energized and externally insulated.

[0003] In the prior art, a high-temperature resistant composite multi-core cable with publication number CN219842827U provides initial high-temperature protection for the conductors by setting an outer high-temperature resistant layer and a secondary high-temperature resistant layer to prevent deformation and damage due to high temperatures. This allows the cable to be used normally in high-temperature environments. Furthermore, the inclusion of a flame-retardant layer made of highly flame-retardant perfluororubber, combined with the fire-resistant properties of the mica tape braided layer, provides double-layer flame-retardant protection for the conductors, preventing them from being damaged by fire. However, the following problems still exist:

[0004] The aforementioned multi-core cable uses two high-temperature resistant layers for high-temperature protection. However, the internal cores are placed directly during use, resulting in weak compressive strength and easy damage. Furthermore, the cable is too long, making recycling inconvenient.

[0005] Therefore, a high-temperature resistant composite multi-core cable is proposed to address the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] To address the shortcomings of existing technologies and solve the problems of poor internal compressive strength and inconvenient use and recycling of the aforementioned cables, a high-temperature resistant composite multi-core cable is proposed.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature resistant composite multi-core cable, comprising a cable body and protective outer shells disposed at both ends thereof. The cable body includes a rubber insulation layer, a metal braided mesh layer connected inside the rubber insulation layer, a honeycomb sheath connected inside the metal braided mesh layer, an insulating layer connected inside the honeycomb sheath, a waterproof layer connected inside the insulating layer, a flame-retardant layer connected inside the waterproof layer, a plurality of rubber strips passing through the inner wall of the flame-retardant layer, a support ring connected inside the rubber strips, a barrier reinforcing rib connected inside the support ring, a plurality of wire grooves opened inside the barrier reinforcing ribs, and wire cores connected inside the wire grooves.

[0010] Preferably, the rubber insulation layer has a ceramic fiber mesh inside, the metal woven mesh layer uses silver-plated copper wire, the insulating layer is wrapped with aluminum foil, the waterproof layer uses ceramicized silicone rubber, the flame retardant layer uses a silicone rubber matrix, aluminum hydroxide and zinc borate are used for composite flame retardancy, and the support ring is made of resin hollow tube.

[0011] Preferably, the protective shell includes a first protective shell and a second protective shell. The upper and lower sides of the right wall of the first protective shell are fixedly connected to mounting plates, and threaded holes are provided on the front and rear sides of the top of the mounting plates.

[0012] The second protective shell has mounting slots on both the upper and lower sides of its left wall, and another threaded hole on both the front and rear sides of the opposite side of the second protective shell, which is adapted to the mounting bolt.

[0013] Preferably, a connecting base is connected to the front of the protective shell on the left side. The connecting base includes a connecting shell. Several linear slots are opened at the center of the inner wall of the connecting shell. Fixing blocks are slidably connected to all four sides of the connecting shell. Threaded rods are movably connected to the opposite side of each fixing block.

[0014] Preferably, a connector is connected to the front of the protective shell on the right side. The connector includes a connecting block. Several linear inserts are fixedly connected to the front of the connecting block. Fixing grooves are provided on all four sides of the outer wall of the connecting block. The linear inserts are adapted to the linear slots, and the fixing grooves are adapted to the fixing blocks.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a high-temperature resistant composite multi-core cable, which has the following beneficial effects:

[0017] 1. This utility model utilizes the endothermic decomposition of aluminum hydroxide to generate an aluminum oxide barrier layer through a flame-retardant layer. This layer is combined with zinc borate and nano clay to promote char formation and inhibit smoldering, thus achieving flame retardancy. The support ring and barrier reinforcing ribs improve the internal tensile and compressive strength, solving the problem of poor internal flame retardancy and compressive strength of cables.

[0018] 2. This utility model solves the problems of external high temperature resistance and internal moisture absorption of cables by adding ceramic fiber mesh inside the rubber insulation layer, buffering thermal expansion and contraction deformation under high temperature conditions, using metal braided mesh layer and honeycomb sheath for heat conduction and insulation, using insulation layer to reflect electromagnetic waves, and using waterproof layer to prevent moisture from entering the cable.

[0019] 3. This utility model solves the problem of inconvenient use and recycling by inserting the mounting plate into the mounting slot, using the first and second protective shells to fix the cable body under the action of the mounting bolts, and inserting the connector into the connecting shell and using the threaded rod to push the fixing block into the fixing groove. Attached Figure Description

[0020] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural diagram of the connection mechanism of this utility model connecting to the cable body;

[0023] Figure 3 This is a three-dimensional structural diagram of the internal structure of the cable body of this utility model;

[0024] Figure 4 This is a three-dimensional structural diagram of the protective shell of this utility model.

[0025] In the diagram: 1. Cable body; 101. Rubber insulation layer; 102. Metal braided mesh layer; 103. Honeycomb sheath; 104. Insulation layer; 105. Waterproof layer; 106. Flame retardant layer; 107. Rubber strip; 108. Support ring; 109. Barrier reinforcing rib; 1010. Core wire; 2. Protective shell; 201. First protective shell; 202. Mounting plate; 203. Threaded hole; 204. Second protective shell; 205. Mounting slot; 206. Mounting bolt; 3. Connecting base; 301. Connecting shell; 302. Linear slot; 303. Fixing block; 304. Threaded rod; 4. Connector; 401. Connecting block; 402. Linear insertion rod; 403. Fixing groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0027] Specific implementation examples are given below.

[0028] Please see Figures 1-4This utility model provides a high-temperature resistant composite multi-core cable, including a cable body 1 and protective shells 2 disposed at both ends thereon. A connecting base 3 is connected to the front of the left protective shell 2, and a connector 4 is connected to the front of the right protective shell 2.

[0029] like Figures 1-3 As shown, the cable body 1 includes a rubber insulation layer 101, a metal braided mesh layer 102 connected inside the rubber insulation layer 101, a honeycomb sheath 103 connected inside the metal braided mesh layer 102, an insulating layer 104 connected inside the honeycomb sheath 103, a waterproof layer 105 connected inside the insulating layer 104, a flame-retardant layer 106 connected inside the waterproof layer 105, and a plurality of rubber strips 107 passing through the inner wall of the flame-retardant layer 106. A support ring 10 is connected inside the rubber strips 107. 8. The support ring 108 has internal reinforcement ribs 109, and the internal reinforcement ribs 109 have several wire grooves. The wire grooves are connected to wire cores 1010. The rubber insulation layer 101 has ceramic fiber mesh inside. The metal braided mesh layer 102 is made of silver-plated copper wire. The insulation layer 104 is wrapped with aluminum foil. The waterproof layer 105 is made of ceramicized silicone rubber. The flame retardant layer 106 is made of silicone rubber matrix. Aluminum hydroxide and zinc borate are used for composite flame retardancy. The support ring 108 is made of resin hollow tube.

[0030] The above scheme involves: adding a ceramic fiber mesh inside the rubber insulation layer 101 to buffer thermal expansion and contraction deformation under high temperature conditions; using a braided mesh layer 102 and a honeycomb sheath 103 for thermal insulation; using an insulating layer 104 to reflect electromagnetic waves; using a waterproof layer 105 to prevent moisture from entering the cable; using a flame-retardant layer 106, which utilizes the heat absorption of aluminum hydroxide decomposition to generate an alumina barrier layer, combined with zinc borate and nano clay to promote char formation and inhibit smoldering for flame retardancy; and using a support ring 108 and a barrier reinforcing rib 109 to improve the internal tensile and compressive strength.

[0031] like Figure 1 , Figure 2 and Figure 4 As shown, the protective housing 2 includes a first protective housing 201 and a second protective housing 204. The upper and lower sides of the right wall of the first protective housing 201 are fixedly connected to mounting plates 202. The front and rear sides of the top of the mounting plates 202 are provided with threaded holes 203. The upper and lower sides of the left wall of the second protective housing 204 are provided with mounting slots 205. The front and rear sides of the opposite side of the second protective housing 204 are provided with another threaded hole 203. The threaded hole 203 is adapted to the mounting bolt 206.

[0032] The above scheme involves inserting the mounting plate 202 into the mounting slot 205, thereby fixing the first protective shell 201 and the second protective shell 204 to the cable body 1 under the action of the mounting bolts 206.

[0033] like Figure 1 and Figure 2 As shown, the connecting base 3 includes a connecting housing 301. Several linear slots 302 are provided at the center of the inner wall of the connecting housing 301. Fixing blocks 303 are slidably connected to all four sides of the connecting housing 301. Threaded rods 304 are movably connected to the opposite side of each fixing block 303. The connecting head 4 includes a connecting block 401. Several linear inserts 402 are fixedly connected to the front of the connecting block 401. Fixing grooves 403 are provided on all four sides of the outer wall of the connecting block 401. The linear inserts 402 are adapted to the linear slots 302, and the fixing grooves 403 are adapted to the fixing blocks 303.

[0034] The above solution involves inserting the connector 4 into the connector housing 301, inserting the linear insert 402 into the linear slot 302, and rotating the threaded rod 304. Under the action of the thread, the fixing block 303 is pushed into the fixing groove 403, thereby combining and fixing the two cables.

[0035] Working principle:

[0036] In actual use, firstly, by inserting the mounting plate 202 into the mounting slot 205, the cable body 1 is fixed by the first protective shell 201 and the second protective shell 204 under the action of the mounting bolt 206. Then, by inserting the connector 4 into the connecting shell 301, the linear plug 402 is inserted into the linear slot 302, and the threaded rod 304 is used to push the fixing block 303 into the fixing groove 403, so that the two cables are combined and fixed.

[0037] Secondly, by adding a ceramic fiber mesh inside the rubber insulation layer 101, thermal expansion and contraction deformation is buffered under high temperature conditions. The braided mesh layer 102 and the honeycomb sheath 103 work together to conduct heat and provide insulation. The insulation layer 104 reflects electromagnetic waves. The waterproof layer 105 prevents moisture from entering the cable. The flame retardant layer 106 uses aluminum hydroxide decomposition to absorb heat and generate an alumina barrier layer. Zinc borate and nano clay promote char formation and inhibit smoldering for flame retardancy. The support ring 108 and the barrier reinforcing rib 109 improve the internal tensile and compressive strength.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-temperature resistant composite multi-core cable, comprising a cable body (1) and protective outer shells (2) disposed at both ends thereof, characterized in that, The cable body (1) includes a rubber insulation layer (101), a metal braided mesh layer (102) is connected inside the rubber insulation layer (101), a honeycomb sheath (103) is connected inside the metal braided mesh layer (102), an isolation layer (104) is connected inside the honeycomb sheath (103), a waterproof layer (105) is connected inside the isolation layer (104), a flame-retardant layer (106) is connected inside the waterproof layer (105), a plurality of rubber strips (107) are passed through the inner wall of the flame-retardant layer (106), a support ring (108) is connected inside the rubber strips (107), a barrier reinforcing rib (109) is connected inside the support ring (108), a plurality of wire grooves are opened inside the barrier reinforcing rib (109), and a wire core (1010) is connected inside the wire groove.

2. The high-temperature resistant composite multi-core cable according to claim 1, characterized in that: The rubber insulation layer (101) has a ceramic fiber mesh inside, the metal woven mesh layer (102) is made of silver-plated copper wire, the insulating layer (104) is wrapped with aluminum foil, the waterproof layer (105) is made of ceramicized silicone rubber, the flame retardant layer (106) is made of silicone rubber matrix, aluminum hydroxide and zinc borate are used for composite flame retardancy, and the support ring (108) is made of resin hollow tube.

3. The high-temperature resistant composite multi-core cable according to claim 1, characterized in that: The protective shell (2) includes a first protective shell (201) and a second protective shell (204). The upper and lower sides of the right wall of the first protective shell (201) are fixedly connected to mounting plates (202). Threaded holes (203) are opened on the front and rear sides of the top of the mounting plates (202). The second protective shell (204) has mounting slots (205) on both the upper and lower sides of the left wall, and another threaded hole (203) is provided on both the front and rear sides of the opposite side of the second protective shell (204). The threaded hole (203) is adapted to the mounting bolt (206).

4. The high-temperature resistant composite multi-core cable according to claim 3, characterized in that: A connecting base (3) is connected to the front of the protective shell (2) on the left side. The connecting base (3) includes a connecting shell (301). Several linear slots (302) are opened at the center of the inner wall of the connecting shell (301). Fixed blocks (303) are slidably connected to all four sides of the connecting shell (301). Threaded rods (304) are movably connected to the opposite side of each fixed block (303).

5. The high-temperature resistant composite multi-core cable according to claim 4, characterized in that: The protective shell (2) on the right side is connected to a connector (4) at the front. The connector (4) includes a connector block (401). Several linear inserts (402) are fixedly connected to the front of the connector block (401). Fixing grooves (403) are provided on all four sides of the outer wall of the connector block (401). The linear inserts (402) are adapted to the linear slots (302), and the fixing grooves (403) are adapted to the fixing blocks (303).

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