Novel isolation type mineral insulation fireproof cable

Abstract

The utility model provides a novel isolation type mineral insulation fireproof cable, which relates to the technical field of cables, and comprises a cable, a central layer is arranged in the center of the cable, a three-legged partition plate is arranged in the central layer, an inner insulation layer is arranged in a groove arranged on the three-legged partition plate, a conductor is wrapped in the inner insulation layer, and an outer insulation layer is arranged in the inner insulation layer. A middle insulating layer is arranged outside the center layer, a flame-retardant layer is arranged outside the middle insulating layer, an isolation sleeve is arranged outside the flame-retardant layer, an outer protection layer is arranged outside the isolation sleeve, the three-legged partition plate is made of ABS plastic materials, and an inner filling layer is arranged between a groove formed in the three-legged partition plate and the inner insulating layer. The inner filling layer is made of AI (OH) 2 mineral materials, multiple sets of supporting blocks are arranged on the outer ring face of the middle insulating layer, the other ends of the supporting blocks are fixed to the inner side wall of the flame-retardant layer, and the middle insulating layer is made of mineral insulating materials.

Description

Technical Field

[0001] The utility model relates to the technical field of cables, in particular to a novel isolated mineral insulated fireproof cable. Background Art

[0002] A cable is a device for transmitting electrical energy or signals, typically consisting of several or several groups of conductors. Cables include power cables, control cables, compensating cables, shielded cables, high-temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, marine cables, mining cables, and aluminum alloy cables. They are composed of single or multiple strands of wire and an insulating layer, and are used to connect circuits and electrical appliances.

[0003] In the specification of an isolated flexible mineral insulated fireproof cable in the prior art (Announcement No. CN212907196U), it is mentioned that "it includes a protective layer, a reinforcement layer, an anti-corrosion layer, a shielding layer, a fire-resistant layer and a core wire. The reinforcement layer is fixed on the surface of the protective layer, the anti-corrosion layer is fixed on the surface of the reinforcement layer, the shielding layer is fixed on the surface of the anti-corrosion layer, and the fire-resistant layer includes a fireproof sleeve, a horizontal fireproof board and a vertical fireproof board, and the fireproof sleeve is fixed on the surface of the shielding layer." However, the cable in the prior art is prone to denting or bending and deforming when squeezed, which may affect the stable operation of the internal conductor and is not safe, strong and durable to use. Utility Model Content

[0004] In order to overcome the defects of the existing technology, a new type of isolated mineral insulated fire-resistant cable is now provided to solve the problem that the cables in the existing technology are easily dented or bent and deformed when squeezed, which may affect the stable operation of the internal conductor and make them unsafe, strong and durable to use.

[0005] To achieve the above-mentioned purpose, a new type of isolated mineral insulated fire-resistant cable is provided, including a cable, wherein a central layer is arranged in the center of the cable, and a tripod dividing plate is arranged in the central layer, an inner insulating layer is arranged in the groove arranged on the tripod dividing plate, and a conductor is wrapped in the inner insulating layer, a middle insulating layer is arranged outside the central layer, and a flame retardant layer is arranged outside the middle insulating layer, an isolation sleeve is arranged outside the flame retardant layer, and an outer protective layer is arranged outside the isolation sleeve.

[0006] Furthermore, the tripod partition board is made of ABS plastic material, and an inner filling layer is provided between the groove provided on the tripod partition board and the inner insulating layer, and the inner filling layer is made of Al(OH)2 mineral material.

[0007] Furthermore, the outer annular surface of the middle insulating layer is provided with a plurality of support blocks, and the other ends of the support blocks are fixed on the inner side wall of the flame retardant layer, and the middle insulating layer is made of mineral insulating material.

[0008] Further, multiple groups of reinforcing cores are arranged in the flame retardant layer. The reinforcing cores are made of steel wire, and the flame retardant layer adopts an aluminum soft sheath structure.

[0009] Further, multiple groups of inner sleeve openings are arranged on the outer circumferential surface of the isolation sleeve, and the isolation sleeve is made of cross-linked polyethylene.

[0010] Further, multiple groups of outer sleeve openings are arranged on the inner side surface of the outer protective layer. The outer protective layer is made of low-smoke and halogen-free polyolefin, and each group of outer sleeve openings is sleeved outside the corresponding group of inner sleeve openings.

[0011] Further, an oxygen isolation layer is arranged between the isolation sleeve and the outer protective layer, and the oxygen isolation layer is made of Mg(OH)2 mineral material.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The setting of the inner three-legged separator in the central layer of the present utility model serves the purpose of stably separating the three groups of inner insulating layers, preventing mutual extrusion and abrasion between the three groups of inner insulating layers, ensuring tight and stable installation, and making it more durable.

[0014] 2. The setting of the middle insulating layer and the support block in the present utility model has the effects of intermediate support and isolation. The middle insulating layer and the flame retardant layer are arranged together to enhance the resistance to mechanical impact, deformation, and breakage, making the cable more solid and firm.

[0015] 3. The setting of the inner sleeve openings and the outer sleeve openings in the present utility model helps prevent the surface of the cable from collapsing, making it more plump and solid. Moreover, the settings of the isolation sleeve, the outer protective layer, and the oxygen isolation layer play roles in external corrosion prevention and high-temperature resistance, contributing to safety protection and making it safer and more reliable. Description of the Drawings

[0016] Figure 1 is the effect diagram of the embodiment of the present utility model;

[0017] Figure 2 is the cross-sectional schematic diagram of the embodiment of the present utility model;

[0018] Figure 3 is the schematic diagram of the central layer structure of the embodiment of the present utility model;

[0019] Figure 4 is the schematic diagram of the structural setting between the flame retardant layer and the middle insulating layer of the embodiment of the present utility model;

[0020] Figure 5 is the schematic diagram of the structural setting between the isolation sleeve and the outer protective layer of the embodiment of the present utility model.

[0021] In the figure: 1. Cable; 10. Central layer; 100. Conductor; 101. Inner insulation layer; 102. Three-legged separator; 103. Inner filling layer; 11. Middle insulation layer; 110. Support block; 12. Flame-retardant layer; 120. Reinforcing core; 13. Isolation sleeve; 130. Inner sleeve opening; 14. Outer protective layer; 140. Outer sleeve opening; 15. Oxygen isolation layer. Specific embodiments

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Specific details such as specific system structures and technologies are proposed to more thoroughly understand the embodiments of the present utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, those skilled in the art should understand that the present utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present disclosure.

[0023] The following details the specific embodiments of the present utility model in conjunction with the accompanying drawings.

[0024] Figure 1 Is the effect diagram of the embodiment of the present utility model, Figure 2 Is the cross-sectional schematic diagram of the embodiment of the present utility model, Figure 3 Is the structural schematic diagram of the central layer of the embodiment of the present utility model, Figure 4 Is the structural setting schematic diagram between the flame-retardant layer and the middle insulation layer of the embodiment of the present utility model and Figure 5 Is the structural setting schematic diagram between the isolation sleeve and the outer protective layer of the embodiment of the present utility model.

[0025] Referring to Figures 1 to 5 As shown, the present utility model provides a new type of isolated mineral insulation fireproof cable, including a cable 1. A central layer 10 is provided in the center of the cable 1, and a three-legged separator 102 is provided in the central layer 10. An inner insulation layer 101 is provided in the groove provided on the three-legged separator 102, and a conductor 100 is wrapped in the inner insulation layer 101. A middle insulation layer 11 is provided outside the central layer 10, a flame-retardant layer 12 is provided outside the middle insulation layer 11, an isolation sleeve 13 is provided outside the flame-retardant layer 12, and an outer protective layer 14 is provided outside the isolation sleeve 13.

[0026] In this embodiment, the three-legged separator 102 is made of ABS plastic, and an inner filling layer 103 is provided between the groove provided on the three-legged separator 102 and the inner insulating layer 101, and the inner filling layer 103 is made of AI(OH)2 mineral material.

[0027] As a preferred embodiment, the setting of the three-legged separator 102 in the central layer 10 of the present utility model serves the purpose of stably separating the three groups of inner insulating layers 101, so that the three groups of inner insulating layers 101 are prevented from being squeezed and worn against each other, and are tightly and firmly installed, and are more durable.

[0028] In this embodiment, multiple groups of support blocks 110 are provided on the outer circumferential surface of the middle insulating layer 11, and the other ends of the support blocks 110 are fixed on the inner side wall of the flame retardant layer 12, and the middle insulating layer 11 is made of mineral insulation material; multiple groups of strengthening cores 120 are provided in the flame retardant layer 12, and the strengthening cores 120 are made of steel wire, and the flame retardant layer 12 adopts an aluminum soft sheath structure.

[0029] As a preferred embodiment, the setting of the middle insulating layer 11 and the support blocks 110 in the present utility model serves the effect of intermediate support and isolation, and the middle insulating layer 11 and the flame retardant layer 12 are arranged together to enhance the resistance to mechanical impact, pit deformation, and breakage, making the cable more firm and durable.

[0030] In this embodiment, multiple groups of inner sleeve openings 130 are provided on the outer circumferential surface of the isolation sleeve 13, and the isolation sleeve 13 is made of cross-linked polyethylene; multiple groups of outer sleeve openings 140 are provided on the inner side surface of the outer protective layer 14, and the outer protective layer 14 is made of low-smoke and halogen-free polyolefin material, and each group of outer sleeve openings 140 is sleeved outside a corresponding group of inner sleeve openings 130; an oxygen isolation layer 15 is provided between the isolation sleeve 13 and the outer protective layer 14, and the oxygen isolation layer 15 is made of Mg(OH)2 mineral material.

[0031] As a preferred embodiment, the setting of the inner sleeve openings 130 and the outer sleeve openings 140 in the present utility model helps the surface layer of the cable not to collapse easily and to be more plump and solid, and the settings of the isolation sleeve 13, the outer protective layer 14, and the oxygen isolation layer 15 play the roles of external anti-corrosion and high temperature resistance, contributing to safety protection and making it safer and more reliable.

[0032] The present utility model can effectively solve the problems in the prior art that the cable is prone to depression or bending deformation when being squeezed, which may affect the stable operation of the internal conductor and is not safe, firm and durable. The present utility model has high temperature resistance for external protection, enhanced resistance to deformation, bending and breakage in the middle, and tight and reliable protection for the internal conductor, avoiding mutual wear and extrusion, making it safer and more durable.

[0033] The above embodiments are used to explain the present utility model, rather than to limit the utility model. Any modification and change made to the present utility model within the spirit of the present utility model and the scope of the claimed rights for application shall be included within the protection scope of the present utility model.

Claims

1. A new type of isolated mineral insulated fire-resistant cable, characterized in that: It includes a cable (1), a central layer (10) is arranged in the center of the cable (1), and a three-legged separator (102) is arranged in the central layer (10). An inner insulating layer (101) is arranged in the groove formed on the three-legged separator (102), and a conductor (100) is wrapped in the inner insulating layer (101). A middle insulating layer (11) is arranged outside the central layer (10), and a flame retardant layer (12) is arranged outside the middle insulating layer (11). An isolation sleeve (13) is arranged outside the flame retardant layer (12), and an outer protective layer (14) is arranged outside the isolation sleeve (13).

2. The novel isolated mineral insulated fireproof cable according to claim 1, characterized in that, The three-legged separator (102) is made of ABS plastic material, and an inner filling layer (103) is arranged between the groove formed on the three-legged separator (102) and the inner insulating layer (101), and the inner filling layer (103) is made of AI(OH)2 mineral material.

3. A novel isolated type mineral insulated fireproof cable according to claim 1, characterized in that, A plurality of support blocks (110) are arranged on the outer circumferential surface of the middle insulating layer (11), and the other ends of the support blocks (110) are fixed on the inner side wall of the flame retardant layer (12), and the middle insulating layer (11) is made of mineral insulation material.

4. A novel isolated mineral insulated fireproof cable according to claim 1, characterized in that, A plurality of strengthening cores (120) are arranged in the flame retardant layer (12), and the strengthening cores (120) are made of steel wire, and the flame retardant layer (12) adopts an aluminum soft sheath structure.

5. A novel isolated mineral insulated fireproof cable according to claim 1, characterized in that, A plurality of inner sleeve openings (130) are arranged on the outer circumferential surface of the isolation sleeve (13), and the isolation sleeve (13) is made of cross-linked polyethylene material.

6. A novel isolated mineral insulated fireproof cable according to claim 1, characterized in that, A plurality of outer sleeve openings (140) are arranged on the inner side surface of the outer protective layer (14), and the outer protective layer (14) is made of low-smoke and halogen-free polyolefin material, and each group of outer sleeve openings (140) is sleeved outside a corresponding group of inner sleeve openings (130).

7. A novel isolated type mineral insulated fireproof cable according to claim 1, characterized in that, An oxygen isolation layer (15) is arranged between the isolation sleeve (13) and the outer protective layer (14), and the oxygen isolation layer (15) is made of Mg(OH)2 mineral material.

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