Flame-retardant fireproof fire-fighting wire

Abstract

The utility model discloses a flame-retardant fire-resistant fire-fighting electric wire, which belongs to the technical field of fire-fighting electric wires and comprises a wire core, an insulating layer, a sheath layer, a shielding layer and an outer protective layer, the insulating layer, the sheath layer, the shielding layer and the outer protective layer are wrapped on the wire core from inside to outside, and a hollow composite protective layer is arranged between the sheath layer and the shielding layer. The outer wall of the outer protection layer is sleeved with isolation rings at equal intervals so that the outer protection layer can be lifted away from the ground surface when the electric wire is placed on the ground, the composite protection layer is composed of a corrosion-resistant layer, a hollow layer and a flame-retardant layer, the corrosion-resistant layer and the flame-retardant layer are arranged on the inner side and the outer side of the hollow layer respectively, the hollow layer is made of a waterproof material, the corrosion-resistant layer is made of fluoroplastic, and the flame-retardant layer is made of a flame-retardant material. The flame-retardant layer is made of a mica tape, and the isolating ring comprises a fixed base arranged on the outer wall of the outer protective layer and an inner inflation ring connected with the fixed base; the flame-retardant fireproof fire-fighting wire is novel in structure, corrosion-resistant, good in flame-retardant effect, high in protection capability and long in service life.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric wires, and in particular relates to a flame-retardant and fire-resistant fire-fighting electric wire. Background Art

[0002] Fire-fighting wires are widely used in high-rise buildings, subways, underground streets, large power stations, important industrial and mining enterprises and other places related to fire safety and firefighting and lifesaving. For example, they are used in the power supply lines and control lines of emergency facilities such as fire-fighting equipment and emergency guide lights. Most of the current fire-fighting wires have been improved through certain improvements in the outer layer of fire-proof materials to achieve better fire-proof performance.

[0003] For example, a Chinese utility model patent with publication number CN217035192U discloses a flame-retardant and fire-resistant fire-fighting wire, including a fire-retardant coating, a braided shielding layer, a copper tape interlocking armor layer, a fire-resistant mica tape, a fire-resistant filling material, a copper conductor and an antistatic layer. The fire-retardant coating is applied to the surface of the cable, the inner side of the fire-retardant coating is provided with the braided shielding layer, the inner side of the braided shielding layer is wrapped with the copper tape interlocking armor layer, the inner side of the copper tape interlocking armor layer is wrapped with the fire-resistant mica tape, the copper conductor is provided on the fire-retardant filling material, the surface of the copper conductor is provided with a polyethylene insulation layer, and the inner side of the polyethylene insulation layer is provided with the antistatic layer. Although the above scheme has good flame-retardant and fire-resistant properties, there is still room for improvement in the corrosion resistance, buffering and flame-retardant properties of the wire, and when its outer protective layer is directly placed on the ground, it is difficult to repair after wear and tear, and the service life is poor. Therefore, it is necessary to propose a flame-retardant and fire-resistant fire-fighting wire. Utility Model Content

[0004] The utility model aims to overcome the deficiencies of the prior art and provide a flame retardant and fire resistant fire fighting wire.

[0005] A flame-retardant and fire-resistant fire-fighting wire comprises a wire core and an insulating layer, a sheath layer, a shielding layer and an outer sheath wrapped on the wire core from the inside to the outside. The wire core is a basic fire-fighting wire hierarchical structure. The wire core is made of a highly conductive material and is responsible for transmitting current. The insulating layer has an insulating effect to prevent current leakage and ensure safety. The sheath layer protects the insulating layer and the wire core and can prevent the internal wire core from being mechanically damaged during use. The shielding layer is used to reduce electromagnetic interference to ensure the signal transmission quality of the wire. The outermost outer sheath plays a preliminary role in protecting the wire and enhancing the overall mechanical strength of the wire. A corrosion-resistant and flame-retardant hollow composite protective layer is provided between the sheath layer and the shielding layer. The hollow structure has a certain buffering effect and improves the impact resistance of the wire. At the same time, it has good corrosion resistance and flame retardancy and can further protect the internal wire core. Isolation rings are equidistantly sleeved on the outer wall of the outer sheath to lift the outer sheath off the ground when the wire is placed on the ground.

[0006] Furthermore, the composite protective layer is specifically composed of a corrosion-resistant layer, a hollow layer and a flame-retardant layer. The corrosion-resistant layer and the flame-retardant layer are respectively arranged on the inner and outer sides of the hollow layer. The hollow structure has a certain buffering effect, which improves the impact resistance of the wire. The corrosion-resistant layer and the flame-retardant layer have a double protection effect, providing effective corrosion resistance and flame retardant effects on the outside of the wire core.

[0007] Furthermore, the hollow layer is made of waterproof material, which has a certain buffering effect and can also play a waterproof function. The corrosion-resistant layer is made of fluoroplastic, which can resist the erosion of various strong acids, strong alkalis and organic solvents. The flame-retardant layer is made of mica tape.

[0008] Furthermore, the isolation ring includes a fixing base arranged on the outer wall of the outer protective layer and an inner inflatable ring connected to the fixing base, and the inner inflatable ring is sleeved on the outer protective layer.

[0009] Furthermore, a liquid storage ring with built-in flame retardant liquid and an outer inflatable ring are fixedly arranged on the fixed base. The liquid storage ring is sleeved on the inner inflatable ring, and the outer inflatable ring is sleeved on the liquid storage ring. The inner inflatable ring, the liquid storage ring and the outer inflatable ring are stacked in a design. The outer inflatable ring is located on the outermost side to provide support. Even if wear and leakage occurs, the support effect can be continued by simply inflating the inner inflatable ring to make it expand. This is easy to operate.

[0010] Furthermore, an air injection port with a built-in one-way air inlet structure is provided on the side wall of the fixed base, and the air injection port is connected to the inner inflation ring. In actual use, workers only need to identify the deflated isolation ring and then inflate it through the air injection port. The operation is simple and convenient.

[0011] Furthermore, the insulating layer is made of polyvinyl chloride, which has good electrical insulation performance and certain flame retardant characteristics, relatively low cost and stable performance.

[0012] Furthermore, the material of the sheath layer is rock wool, which has good thermal insulation, heat insulation and fire resistance properties.

[0013] Furthermore, the shielding layer is made of tinned copper wire mesh, which has strong resistance to longitudinal tension, soft texture, and better oxidation resistance than traditional copper wire shielding.

[0014] Furthermore, the outer sheath is made of a low-smoke, halogen-free flame-retardant sheath, which has excellent flame-retardant properties and can resist chemical corrosion to a certain extent. Even if it is burned at high temperature, it will only produce low-smoke and low-toxic gases, and has strong safety performance.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides a corrosion-resistant and flame-retardant hollow composite protective layer between the sheath layer and the shielding layer, wherein the hollow structure has a certain buffering effect, thereby improving the impact resistance of the wire, and at the same time has good corrosion resistance and flame retardant properties, which can further protect the internal wire core; isolation rings are equidistantly sleeved on the outer wall of the outer protective layer to lift the outer protective layer off the ground surface when the wire is placed on the ground, thereby avoiding direct contact between the outer protective layer and the ground, which can effectively increase the overall service life of the wire; the utility model has a novel structure, good corrosion resistance and flame retardant effects, strong protective ability and a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the hierarchical structure of the utility model;

[0019] Figure 3 This is a cross-sectional view of the utility model after the isolation ring is hidden;

[0020] Figure 4 It is a cross-sectional view of the composite protective layer in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the isolation ring in the utility model.

[0022] In the figure: 1. wire core; 2. insulation layer; 3. sheath layer; 4. composite protective layer; 401. corrosion-resistant layer; 402. hollow layer; 403. flame-retardant layer; 5. shielding layer; 6. outer protective layer; 7. isolation ring; 701. fixed base; 702. inner inflation ring; 703. liquid storage ring; 704. outer inflation ring; 705. air injection port. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 5As shown, a flame retardant and fire-resistant fire-fighting wire comprises a wire core 1 and an insulating layer 2, a sheath layer 3, a shielding layer 5 and an outer sheath 6 wrapped on the wire core 1 from the inside to the outside, which is a basic fire-fighting wire hierarchical structure. The wire core 1 is made of a highly conductive material and is responsible for transmitting current. The insulating layer 2 has an insulating effect to prevent current leakage and ensure safety. The sheath layer 3 protects the insulating layer 2 and the wire core 1 to prevent the internal wire core 1 from being mechanically damaged during use. The shielding layer 5 is used to reduce electromagnetic interference to ensure the signal transmission quality of the wire. The outermost outer sheath 6 plays a preliminary protection role for the wire and To enhance the overall mechanical strength of the wire, a corrosion-resistant and flame-retardant hollow composite protective layer 4 is arranged between the sheath layer 3 and the shielding layer 5, wherein the hollow structure has a certain buffering effect, thereby improving the impact resistance of the wire, and at the same time has good corrosion resistance and flame retardant properties, and can further protect the internal wire core 1. Isolation rings 7 are equidistantly sleeved on the outer wall of the outer protective layer 6 to lift the outer protective layer 6 off the ground surface when the wire is placed on the ground, thereby avoiding direct contact between the outer protective layer 6 and the ground, and can effectively increase the overall service life of the wire. The structure is novel, corrosion-resistant and flame-retardant effects are good, the protective ability is strong, the service life is long, and it has high practical value.

[0025] The composite protective layer 4 is specifically composed of a corrosion-resistant layer 401, a hollow layer 402 and a flame-retardant layer 403. The corrosion-resistant layer 401 and the flame-retardant layer 403 are respectively arranged on the inner and outer sides of the hollow layer 402. The hollow structure has a certain buffering effect, which improves the impact resistance of the wire. The corrosion-resistant layer 401 and the flame-retardant layer 403 have a double protection effect, providing effective corrosion resistance and flame retardant effects on the outside of the wire core 1 to prevent the wire core 1 from being damaged in harsh environments, and has strong protection capabilities.

[0026] The hollow layer 402 is made of waterproof material, which has a certain buffering effect and can also play a waterproof function with diverse protection capabilities. The corrosion-resistant layer 401 is made of fluoroplastic, which is a polymer material with excellent corrosion resistance and can resist the erosion of various strong acids, strong alkalis and organic solvents. The flame-retardant layer 403 is made of mica tape, an organic insulating layer 2 material composed of glass fiber, quartz powder, and silicate material compounds. After encountering fire, it is sintered into a hard and high-density insulating material adhered to the surface of the conductor, providing effective flame-retardant protection for the wires.

[0027] The isolation ring 7 includes a fixed base 701 arranged on the outer wall of the outer protective layer 6 and an inner inflatable ring 702 connected to the fixed base 701. The inner inflatable ring 702 is sleeved on the outer protective layer 6. The fixed base 701 is also fixedly provided with a liquid storage ring 703 with built-in flame retardant liquid and an outer inflatable ring 704. The liquid storage ring 703 is sleeved on the inner inflatable ring 702, and the outer inflatable ring 704 is sleeved on the liquid storage ring 703. The inner inflatable ring 702, the liquid storage ring 703 and the outer inflatable ring 704 are stacked. The outer inflatable ring 704 is located at the outermost side to play a supporting effect. Even if wear and leakage occur, it only needs to inflate the inner inflatable ring 702 to make it expand, so as to continue the supporting effect, which is easy to operate.

[0028] An air injection port 705 with a built-in one-way air inlet structure is provided on the side wall of the fixed base 701, and the air injection port 705 is connected to the inner inflation ring 702. In actual use, the worker only needs to identify the deflated isolation ring 7 and then inflate it through the air injection port 705. The operation is simple and convenient.

[0029] The insulating layer 2 is made of polyvinyl chloride, which has good electrical insulation performance and certain flame retardant characteristics, with relatively low cost and stable performance. The sheath layer 3 is made of rock wool, which has good thermal insulation, heat insulation and fire resistance. The shielding layer 5 is made of tinned copper wire mesh, which has strong longitudinal tensile resistance, soft texture, and better oxidation resistance than traditional copper wire shielding. The outer sheath 6 is made of low-smoke halogen-free flame retardant sheath, which has excellent flame retardant properties and can resist chemical corrosion to a certain extent. Even if it is burned at high temperature, it will only produce low smoke and low toxicity gas, and has strong safety performance.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A flame-retardant and fire-resistant fire-fighting wire, comprising a wire core (1) and an insulating layer (2), a sheath layer (3), a shielding layer (5) and an outer sheath (6) wrapped around the wire core (1) from the inside to the outside, characterized in that: A hollow composite protective layer (4) is provided between the sheath layer (3) and the shielding layer (5), and isolation rings (7) are equidistantly sleeved on the outer wall of the outer sheath (6) so as to lift the outer sheath (6) off the ground surface when the electric wire is placed on the ground.

2. The flame retardant and fire resistant fire fighting wire according to claim 1, characterized in that: The composite protective layer (4) is composed of a corrosion-resistant layer (401), a hollow layer (402) and a flame-retardant layer (403), wherein the corrosion-resistant layer (401) and the flame-retardant layer (403) are arranged on the inner side and the outer side of the hollow layer (402), respectively.

3. The flame retardant and fire resistant fire fighting wire according to claim 2, characterized in that: The hollow layer (402) is made of a waterproof material, the corrosion-resistant layer (401) is made of fluoroplastic, and the flame-retardant layer (403) is made of mica tape.

4. The flame retardant and fire resistant fire fighting wire according to claim 1, characterized in that: The isolation ring (7) comprises a fixing base (701) arranged on the outer wall of the outer protective layer (6) and an inner inflatable ring (702) connected to the fixing base (701), wherein the inner inflatable ring (702) is sleeved on the outer protective layer (6).

5. The flame retardant and fire resistant fire fighting wire according to claim 4, characterized in that: A liquid storage ring (703) containing a flame retardant liquid and an outer air-filling ring (704) are also fixedly arranged on the fixed base (701); the liquid storage ring (703) is sleeved on the inner air-filling ring (702), and the outer air-filling ring (704) is sleeved on the liquid storage ring (703).

6. The flame retardant and fire resistant fire fighting wire according to claim 5, characterized in that: An air injection port (705) with a built-in one-way air inlet structure is provided on the side wall of the fixed base (701), and the air injection port (705) is in communication with the inner inflation ring (702).

7. The flame retardant and fire resistant fire fighting wire according to claim 1, characterized in that: The material of the insulating layer (2) is polyvinyl chloride.

8. The flame retardant and fire resistant fire fighting wire according to claim 1, characterized in that: The material of the sheath layer (3) is rock wool.

9. The flame retardant and fire resistant fire fighting wire according to claim 1, characterized in that: The shielding layer (5) is made of tinned copper wire mesh.

10. The flame retardant and fire resistant fire fighting wire according to claim 1, characterized in that: The material of the outer protective layer (6) is a low-smoke halogen-free flame-retardant sheath.

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