Fireproof wire

Abstract

The utility model relates to power transmission line technical field especially relates to a kind of fireproof electric wire, including wire, insulating layer, insulating layer is wrapped wire, the wire, insulating layer is set two sections, the end of two section wires is parallelly arranged, the fireproof electric wire further includes piston, inductive cylinder, connecting rod, conducting block, inductive cylinder is the cylinder of one end opening, two section wires are inserted from the bottom of inductive cylinder and are penetrated inductive cylinder after, from the opening of inductive cylinder, piston is arranged in inductive cylinder, one end of connecting rod is connected piston, the other end is connected conducting block after from the opening of inductive cylinder stretches out, and conducting block connects the end of two section wires.The fireproof electric wire can be reused, and circuit is broken when electric wire heats up, and electric wire can continue normal use after temperature drop.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line technology, and in particular to a fire-resistant wire. Background Technology

[0002] Electrical equipment plays an indispensable role in production and daily life, but fires caused by current overload are also frequent. To reduce the occurrence of fires, circuit breakers are installed in electrical circuits to automatically cut off power when there is an overload. However, circuit breakers control all or part of the circuits in a user's home, and their overload current is relatively large. If multiple high-power appliances share a single circuit, such as multiple electric hot pots sharing a single power strip in the kitchen, although the total current may not trigger the circuit breaker to trip, all the current is concentrated on a single wire, which can easily cause the wire to overheat and ignite the insulation or any flammable materials it comes into contact with, leading to a fire.

[0003] Traditional fire-resistant electrical wires work by using flame-retardant materials to create the insulation layer, but this cannot prevent fires caused by the wire heating up and igniting flammable materials. To address this, patent CN113782257B provides a fire-resistant cable, including an insulation layer and a first conductor. The insulation layer contains a first cavity; the first conductor is disposed within the first cavity, and in at least a portion of the extension path of the first cavity, the first conductor is made of a low-melting-point metal or alloy. The fire-resistant cable provided by this invention, with at least a portion of the first conductor within the insulation layer made of a low-melting-point metal or alloy, allows the insulation layer to melt due to temperature rise after common electrical problems such as leakage, short circuits, overloads, and excessive contact resistance occur. The low-melting-point metal or alloy inside the cable, being in a liquid state or having melted upon heating, leaks, causing the circuit to disconnect in a very short time, thus preventing further temperature increases and potential fires.

[0004] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems: the fireproof cable in the patented technology avoids fire by melting when heated, but after melting, the cable cannot be used again and cannot be reused. It needs to be replaced with a new one, which results in high usage costs. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by developing a fire-resistant wire that can be reused. The wire breaks the circuit when it heats up and can continue to be used normally after the temperature drops.

[0006] The technical solution to the technical problem solved by this utility model is as follows: An embodiment of this utility model provides a fireproof wire, including a conductor and an insulation layer. The insulation layer wraps around the conductor. The conductor and the insulation layer are provided in two sections, with the ends of the two conductor sections arranged in parallel. The fireproof wire also includes a piston, a sensing cylinder, a connecting rod, and a conductive block. The sensing cylinder is a cylindrical shape with one end open. The two conductor sections are inserted from the bottom of the sensing cylinder and pass through the sensing cylinder before extending out from the opening of the sensing cylinder. The piston is disposed in the sensing cylinder. One end of the connecting rod is connected to the piston, and the other end extends out from the opening of the sensing cylinder and is connected to the conductive block. The conductive block connects the ends of the two conductor sections.

[0007] As an optimization, the center of the conductive block is directly opposite the end faces of the two wires, and the end faces of the wires are provided with an opening. The top of the opening is chamfered, and the lower ends of the conductive block are chamfered on both sides.

[0008] As an optimization, a bend is provided at the end of the conductor, the bends of the two conductors are arranged opposite each other, the conductive block is located in the middle of the two conductors, and the lower ends of the conductive block are chamfered on both sides.

[0009] As an optimization, the sensing cylinder is a single-layer cylindrical shape, with two wires inserted from the bottom of the sensing cylinder, passing through the piston, and finally extending out from the opening of the sensing cylinder.

[0010] As an optimization, the induction cylinder is provided with inner and outer layers, the wire is located in the cavity between the inner and outer layers of the induction cylinder, and the piston is located in the cavity inside the induction cylinder.

[0011] As an improvement, the fireproof wire also includes a safety box, with the induction tube fixed inside the safety box.

[0012] The effects provided in the utility model description are merely those of the embodiments, and not all the effects of the utility model. The above technical solution has the following advantages or beneficial effects: 1. When the wire heats up, the air temperature and pressure inside the induction cylinder increase. The air pressure pushes the piston towards the opening of the induction cylinder, causing the conductive block to disengage from the end of the wire, thus breaking the circuit. When the wire stops heating, the air temperature and pressure inside the induction cylinder decrease. Atmospheric pressure drives the piston towards the inside of the induction cylinder, causing the conductive block to contact the ends of the two wires, connecting them and allowing the transmission of electrical energy to continue. This fire-resistant wire is reusable; it breaks the circuit when the wire heats up and can be used normally again after the wire temperature drops.

[0013] 2. By setting the induction cylinder to a single-layer cylindrical shape, the wires can directly heat the cavity of the induction cylinder below the piston, which improves the accuracy of the sensing temperature.

[0014] 3. By setting the induction cylinder to have inner and outer layers, with the wire located in the cavity between the two layers and the piston located in the cavity inside the induction cylinder, the wire does not need to pass through the piston, thus reducing the requirements for sealing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0016] Figure 2 This is a structural schematic diagram of the second embodiment of the present invention.

[0017] Figure 3 This is a side view of the wire and conductive block in the third embodiment of the present invention.

[0018] Figure 4 This is a side view of the wire and conductive block in the fourth embodiment of the present invention.

[0019] The components are: wire 1, insulation layer 2, piston 3, induction cylinder 4, connecting rod 5, conductive block 6, and safety box 7. Detailed Implementation

[0020] To clearly illustrate the technical features of this solution, the invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings.

[0021] Figure 1 This is the first embodiment of the present utility model, such as Figure 1 As shown, a fire-resistant wire includes a conductor 1 and an insulation layer 2, with the insulation layer 2 wrapping the conductor 1. The conductor 1 and insulation layer 2 are divided into two sections, with the ends of the two sections parallel to each other. The fire-resistant wire also includes a piston 3, a sensing cylinder 4, a connecting rod 5, and a conductive block 6. The sensing cylinder 4 is a cylindrical shape with one open end. The two sections of conductor 1 are inserted into the bottom of the sensing cylinder 4, pass through the sensing cylinder 4, and then extend out of the opening. The piston 3 is disposed inside the sensing cylinder 4. One end of the connecting rod 5 is connected to the piston 3, and the other end extends out of the opening of the sensing cylinder 4 and connects to the conductive block 6. The conductive block 6 connects to the ends of the two sections of conductor 1. The sensing cylinder 4 is a single-layer cylindrical shape. The two sections of conductor 1 are inserted into the bottom of the sensing cylinder 4, pass through the piston 3, and finally extend out of the opening of the sensing cylinder 4. By making the sensing cylinder 4 a single-layer cylindrical shape, the conductor 1 can directly heat the cavity of the sensing cylinder 4 below the piston 3, improving the accuracy of the sensing temperature. The fire-resistant wire also includes a safety box 7, inside which the sensing cylinder 4 is fixed. The safety box 7 can isolate and prevent leakage of wire 1, and at the same time fix wire 1 and sensor 4 to ensure the stability of wire operation.

[0022] When wire 1 heats up, the air temperature and pressure inside the induction cylinder 4 increase. This air pressure pushes piston 3 towards the opening of the induction cylinder 4, causing conductive block 6 to disengage from the end of wire 1, thus breaking the circuit. When wire 1 stops heating, the air temperature and pressure inside the induction cylinder 4 decrease. Atmospheric pressure drives piston 3 further into the induction cylinder 4, bringing conductive block 6 into contact with the ends of the two wires 1, connecting them and allowing continued power transmission. The on / off temperature of wire 1 can be set to a fixed value A. When the temperature of wire 1 is below A, conductive block 6 contacts the ends of the two wires 1, creating a negative pressure inside the induction cylinder 4. When the temperature of wire 1 is above A, the pressure inside the induction cylinder 4 becomes positive, causing conductive block 6 to disengage from the ends of the two wires 1. The value of A can be customized or multiple values ​​can be set to correspond to multiple product models, meeting the needs of different regions and seasons. This fire-resistant wire is reusable; it breaks the circuit when the wire heats up and can continue to be used normally after the wire temperature drops.

[0023] Figure 2 This is a second embodiment of the present invention, differing from the first embodiment in that: the induction cylinder 4 has inner and outer layers, the wire 1 is located in the cavity between the inner and outer layers of the induction cylinder 4, and the piston 3 is located in the cavity inside the induction cylinder 4. The end of the wire 1, after the insulation layer 2 is removed, is inserted into the induction cylinder 4. Besides sensing the temperature of the wire 1, the induction cylinder 4 also secures the wire 1. By setting the induction cylinder 4 to have inner and outer layers, with the wire 1 located in the cavity between the inner and outer layers and the piston 3 located in the cavity inside the induction cylinder 4, the wire 1 does not need to penetrate the piston 3, reducing the requirements for sealing.

[0024] Figure 3 As shown in the figure, in the third embodiment of this utility model, the center of the conductive block 6 is directly opposite the end face of the two wires 1. The end face of the wire 1 is provided with an opening, the top of the opening is chamfered, and the lower end of the conductive block 6 is chamfered on both sides, so that the conductive block 6 can easily connect the two wires 1.

[0025] Figure 4 In the fourth embodiment of this utility model, as shown in the figure, a bend is provided at the end of the conductor 1, the bends of the two conductors 1 are arranged opposite each other, and the conductive block 6 is located in the middle of the two conductors 1. The lower ends of the conductive block 6 are chamfered on both sides. This facilitates the connection between the two conductors 1 by the conductive block 6.

[0026] Although the specific embodiments of the utility model have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of the utility model. Based on the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative effort are still within the scope of protection of the utility model.

Claims

1. A fire-resistant electrical wire, comprising a conductor (1) and an insulation layer (2), wherein the insulation layer (2) wraps around the conductor (1), characterized in that: The wire (1) and insulation layer (2) are provided in two sections, with the ends of the two sections of wire (1) arranged in parallel. The fireproof wire also includes a piston (3), a sensing cylinder (4), a connecting rod (5), and a conductive block (6). The sensing cylinder (4) is a cylindrical shape with one end open. The two sections of wire (1) are inserted from the bottom of the sensing cylinder (4) and pass through the sensing cylinder (4), and then extend out from the opening of the sensing cylinder (4). The piston (3) is set in the sensing cylinder (4). One end of the connecting rod (5) is connected to the piston (3), and the other end extends out from the opening of the sensing cylinder (4) and is connected to the conductive block (6). The conductive block (6) is connected to the ends of the two sections of wire (1).

2. The fire-resistant electrical wire according to claim 1, characterized in that, The center of the conductive block (6) is directly opposite the end face of the two wires (1). The end face of the wires (1) is provided with an opening, the top of the opening is chamfered, and the lower end of the conductive block (6) is chamfered on both sides.

3. The fire-resistant electrical wire according to claim 1, characterized in that, The end of the conductor (1) is bent, the bent sections of the two conductors (1) are arranged opposite each other, the conductive block (6) is located in the middle of the two conductors (1), and the lower end of the conductive block (6) is chamfered on both sides.

4. The fire-resistant electrical wire according to claim 1, characterized in that, The induction cylinder (4) is a single-layer cylindrical shape. Two wires (1) are inserted from the bottom of the induction cylinder (4) and pass through the piston (3), and finally extend out from the opening of the induction cylinder (4).

5. A fire-resistant electrical wire according to claim 1, characterized in that, The induction cylinder (4) has two layers, an inner and an outer layer. The wire (1) is located in the cavity between the inner and outer layers of the induction cylinder (4), and the piston (3) is located in the cavity inside the induction cylinder (4).

6. A fire-resistant electrical wire according to claim 1, characterized in that, The fireproof wire also includes a safety box (7), and the induction tube (4) is fixed inside the safety box (7).

Images