Self-protection type fireproof cable

Abstract

The utility model discloses a self-protection type fireproof cable which comprises a cable outer sleeve, a cable inner core arranged inside the cable outer sleeve, a filling sleeve and a self-protection core, the filling sleeve and the self-protection core are embedded between the cable outer sleeve and the cable inner core, and the self-protection core comprises a core sleeve and a flow guide cabinet fixedly connected to one side of the core sleeve. The utility model specifically relates to the technical field of self-protection protection cables. By arranging the core sleeve filled with the 1211 fire extinguishing material for fire extinguishing, on one hand, the core sleeve is heated to expand when the core sleeve is baked after the cable is on fire, and after the sealing ring is grilled and exploded, the 1211 fire extinguishing material in the core sleeve can penetrate through the sealing ring and flow into the inner core ring along the explosion opening and the flow guide cabinet to extinguish fire; the device not only can extinguish fire by itself under the condition that external force is not applied when a fire occurs, but also can control the fire in time by treading the cable to extrude and burst the sealing ring under the conditions that the flame temperature is not high, the fire is emergency and the burst critical point of the sealing ring is not reached, and the timely loss stopping performance is good.

Description

Technical Field

[0001] The utility model relates to the technical field of self-protective protective cables, in particular to a self-protective fireproof cable. Background Art

[0002] A cable is a collection of wires used to transmit power or telecommunication signals. It consists of one or more electrical conductors (usually metal), surrounded by insulating material and protected by an outer protective layer;

[0003] The patent with application number CN202011475591.X discloses a self-protection fireproof cable. When an open flame appears in the cable and the temperature rises suddenly, the cross-shaped heat-conducting column will evenly conduct the sensed temperature to the synthetic wax partition layer. The synthetic wax partition layer softens and falls off after being heated. The ammonium bicarbonate reactant and the acetic acid reaction liquid on both sides of the synthetic wax partition layer come into contact and react. The reaction produces a large amount of carbon dioxide. At this time, the internal pressure of the fireproof support sphere increases, and the sealing plug located above the liquid surface is pushed out from the inside of the through hole. At this time, the carbon dioxide is quickly ejected to isolate oxygen, which has the advantage of extinguishing the open flame of the cable in a short time. However, the patent cannot intervene in time and actively extinguish the open flame when there is an open flame but the flame temperature is not high, the temperature transmission is not timely, and it has not been sensed but there is an open flame. It can often be handled only after the loss increases, and the function of stopping the loss in time is poor. Based on this, a self-protection fireproof cable is proposed. Utility Model Content

[0004] In order to overcome the above defects of the prior art, the utility model provides a self-protection fireproof cable to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a self-protective fireproof cable, comprising a cable jacket, a cable core arranged inside the cable jacket, and a filling sleeve and a self-protective core embedded between the cable jacket and the cable core, the self-protective core comprising a core sleeve and a flow guide cabinet fixedly connected to one side of the core sleeve, an inner core ring for accommodating the cable core, a core sleeve ring for accommodating the core sleeve, and a flow guide cabinet groove of the flow guide cabinet are provided inside the filling sleeve, the inner core ring, the core sleeve ring and the flow guide cabinet groove are connected to each other to form a connected chamber, the interior of the core sleeve is filled with 1211 fire extinguishing material used for fire extinguishing, a thin-walled and easily squeezed sealing ring is provided on one side of the core sleeve, and an extrudable pressing groove is provided on the other side, a bursting port accommodated in the flow guide cabinet is provided on one side of the core sleeve, and the bursting port Aligned with the sealing ring, the opening of the diversion cabinet faces the inside of the inner core ring; by providing a core sleeve filled with 1211 fire extinguishing material used for fire extinguishing, on the one hand, after the cable catches fire, the core sleeve will be baked to expand due to heat, and the sealing ring will be roasted and burst. The 1211 fire extinguishing material in the core sleeve will penetrate the sealing ring and flow into the inner core ring along the bursting port and the diversion cabinet to extinguish the fire; on the other hand, when the pressing groove is compressed to a limited degree, it will cause the 1211 fire extinguishing material to break through the sealing ring and also enter the inner core ring to extinguish the fire, so that the device can not only extinguish the fire by itself without applying external force when the fire occurs, but also can control the fire in time by stepping on the cable to squeeze and burst the sealing ring when the flame temperature is not high, the fire is urgent and the critical point of the sealing ring burst has not been reached.

[0006] As a further solution of the utility model: a pressing mechanism is arranged inside the pressing groove, and the pressing mechanism includes a pressing arc plate, a sliding column, a movable plate and a fixed plate, the fixed plate is fixedly connected to the pressing groove, the sliding column is movably connected to the fixed plate, one end of the sliding column is fixedly connected to the movable plate, the other end of the sliding column is fixedly connected to the pressing arc plate, and the movable plate is movably connected to the pressing groove; by pressing the pressing arc plate, the pressing arc plate can drive the sliding column, and the sliding column can drive the movable plate to squeeze the pressing groove, so that the pressure in the core sleeve changes and causes the 1211 fire extinguishing material to pass through the burst sealing ring and enter the core ring for fire extinguishing.

[0007] As a further solution of the utility model: the end of the pressing arc plate away from the sliding column is set to an arc surface with the same curvature as the core ring; the pressing arc plate and the core ring with the same curvature can avoid the friction displacement between the pressing arc plate and the core ring causing the pressing mechanism to malfunction.

[0008] As a further solution of the utility model: 1211 fire extinguishing material includes 80-90% of difluoromonochloromonobromomethane and 10-20% of dry powder.

[0009] As a further solution of the utility model: multiple groups of bursting ports are provided and all are located inside the flow guide cabinet.

[0010] As a further solution of the utility model: the core sleeve and the flow guide cabinet are made of silica gel throughout.

[0011] As a further solution of the utility model: the pressing mechanism is made of acrylic material throughout.

[0012] Technical effects and advantages of the utility model:

[0013] 1. By providing a core sleeve filled with 1211 fire extinguishing material for fire extinguishing, on the one hand, after the cable catches fire, the core sleeve will be heated and expanded by baking, and the sealing ring will be roasted and burst. After that, the 1211 fire extinguishing material in the core sleeve will penetrate the sealing ring and flow into the inner core ring along the bursting port and the diversion cabinet to extinguish the fire. On the other hand, when the pressing groove is pressed to a limited degree, the 1211 fire extinguishing material will break through the sealing ring and enter the inner core ring to extinguish the fire. This makes the device not only able to extinguish the fire by itself without applying external force when the fire occurs, but also can control the fire in time by stepping on the cable to squeeze and burst the sealing ring when the flame temperature is not high, the fire is urgent and the critical point of the sealing ring burst has not been reached, and the timely stop loss performance is good;

[0014] 2. By pressing the arc pressing plate, the arc pressing plate can drive the sliding column, and the sliding column can drive the moving plate to squeeze the pressing groove, so that the pressure in the core sleeve changes and causes the 1211 fire extinguishing material to pass through the burst sealing ring and enter the core ring for fire extinguishing;

[0015] 3. The pressing arc plate and the core ring having the same curvature can avoid the friction displacement between the pressing arc plate and the core ring, which may cause the pressing mechanism to malfunction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a self-protection fireproof cable of the utility model;

[0017] Figure 2 This is a schematic diagram of the assembly of a filling sleeve and a self-protection core in a self-protection fireproof cable of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of a filling sleeve in a self-protective fireproof cable of the utility model;

[0019] Figure 4 This is a structural schematic diagram of a self-protective fireproof cable core sleeve and a flow guide cabinet of the utility model;

[0020] Figure 5 This is a cross-sectional view of a self-protective fireproof cable core sleeve of the utility model;

[0021] Figure 6 This utility model is a self-protection fireproof cable Figure 4 Enlarged view of point A in the middle.

[0022] Figure numerals: 1. cable jacket; 2. cable inner core; 3. filling sleeve; 31. inner core ring; 32. core sleeve ring; 33. guide cabinet groove; 4. self-protection core; 5. core sleeve; 51. bursting port; 52. pressing groove; 53. sealing ring; 6. guide cabinet; 7. pressing mechanism; 71. pressing arc plate; 72. sliding column; 73. moving plate; 74. fixed plate. 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] Refer to the instruction manual Figure 1-6 The utility model provides a self-protective fireproof cable, comprising a cable jacket 1, a cable core 2 arranged inside the cable jacket 1, a filling sleeve 3 and a self-protective core 4 embedded between the cable jacket 1 and the cable core 2, the self-protective core 4 comprising a core sleeve 5 and a flow guide cabinet 6 fixedly connected to one side of the core sleeve 5, an inner core ring 31 for accommodating the cable core 2, a core sleeve ring 32 for accommodating the core sleeve 5 and a flow guide cabinet groove 33 of the flow guide cabinet 6 are provided inside the filling sleeve 3, the inner core ring 31, the core sleeve ring 32 and the flow guide cabinet groove 33 are connected to each other to form a communicating chamber, the interior of the core sleeve 5 is filled with 1211 fire extinguishing material used for fire extinguishing, a thin-walled and easily squeezed sealing ring 53 is provided on one side of the core sleeve 5, and an extrudable pressing groove 52 is provided on the other side, a bursting port 51 accommodated in the flow guide cabinet 6 is provided on one side of the core sleeve 5, and the bursting port 51 is connected to the sealing ring 53. The sealing ring 53 is aligned, and the opening of the guide cabinet 6 faces the inside of the inner core ring 31; by providing a core sleeve 5 filled with 1211 fire extinguishing material used for fire extinguishing, on the one hand, after the cable catches fire, baking the core sleeve 5 will cause the core sleeve 5 to expand due to heat, and after the sealing ring 53 is roasted and burst, the 1211 fire extinguishing material in the core sleeve 5 will penetrate the sealing ring 53 and flow into the inner core ring 31 along the bursting port 51 and the guide cabinet 6 to extinguish the fire; on the other hand, when the pressing groove 52 is pressurized to a limited degree, it will cause the 1211 fire extinguishing material to break through the sealing ring 53 and also enter the inner core ring 31 to extinguish the fire, so that the device can not only extinguish the fire by itself without applying external force when the fire occurs, but also can control the fire in time by stepping on the cable to squeeze and burst the sealing ring 53 when the flame temperature is not high, the fire is urgent and the critical point of the sealing ring 53 has not been reached.

[0025] As a further solution of the utility model: a pressing mechanism 7 is arranged inside the pressing groove 52, and the pressing mechanism 7 includes a pressing arc plate 71, a sliding column 72, a movable plate 73 and a fixed plate 74, the fixed plate 74 is fixedly connected to the pressing groove 52, the sliding column 72 is movably connected to the fixed plate 74, one end of the sliding column 72 is fixedly connected to the movable plate 73, the other end of the sliding column 72 is fixedly connected to the pressing arc plate 71, and the movable plate 73 is movably connected to the pressing groove 52; by pressing the pressing arc plate 71, the pressing arc plate 71 can drive the sliding column 72, and the sliding column 72 can drive the movable plate 73 to squeeze the pressing groove 52, so that the pressure in the core sleeve 5 changes and causes 1211 fire extinguishing materials to pass through the burst sealing ring 53 and be input into the core ring 31 for fire extinguishing.

[0026] As a further solution of the utility model: the end of the pressing arc plate 71 away from the sliding column 72 is set to an arc surface with the same curvature as the core ring 32; the pressing arc plate 71 and the core ring 32 with the same curvature can avoid the friction displacement between the pressing arc plate 71 and the core ring 32 causing the pressing mechanism 7 to malfunction.

[0027] As a further solution of the utility model: 1211 fire extinguishing material includes 80-90% of difluoromonochloromonobromomethane and 10-20% of dry powder.

[0028] As a further solution of the present invention, multiple groups of bursting ports 51 are provided and all are located inside the flow guide cabinet 6 .

[0029] As a further solution of the utility model: the core sleeve 5 and the flow guide cabinet 6 are made of silica gel throughout.

[0030] As a further solution of the present invention: the pressing mechanism 7 is made of acrylic material throughout.

[0031] Working principle: by providing a core sleeve 5 filled with 1211 fire extinguishing material for fire extinguishing, on the one hand, after the cable catches fire, the core sleeve 5 is baked to expand due to heat, and the sealing ring 53 is roasted and burst. After that, the 1211 fire extinguishing material in the core sleeve 5 will penetrate the sealing ring 53 and flow into the inner core ring 31 along the bursting port 51 and the diversion cabinet 6 to extinguish the fire. On the other hand, when the pressing groove 52 is pressed to a limited degree, the 1211 fire extinguishing material will break through the sealing ring 53 and also enter the inner core ring 31 to extinguish the fire, so that the device can not only extinguish the fire by itself without applying external force when the fire occurs, but also control the fire in time by stepping on the cable to squeeze and burst the sealing ring 53 when the flame temperature is not high, the fire is urgent and the critical point of the sealing ring 53 has not been reached;

[0032] By pressing the arc pressing plate 71, the arc pressing plate 71 drives the sliding column 72, and the sliding column 72 drives the moving plate 73 to squeeze the pressing groove 52, so that the pressure in the core sleeve 5 changes and causes the 1211 fire extinguishing material to pass through the burst sealing ring 53 and enter the core ring 31 to extinguish the fire;

[0033] The pressing arc plate 71 and the core ring 32 having the same curvature can avoid the situation where the pressing mechanism 7 is erroneously activated due to frictional displacement between the pressing arc plate 71 and the core ring 32 .

[0034] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A self-protective fireproof cable, comprising a cable jacket (1), a cable core (2) arranged inside the cable jacket (1), and a filling sleeve (3) and a self-protective core (4) embedded between the cable jacket (1) and the cable core (2), characterized in that: The self-protective core (4) comprises a core sleeve (5) and a flow guide cabinet (6) fixedly connected to one side of the core sleeve (5); the filling sleeve (3) is provided with an inner core ring (31) for accommodating the cable inner core (2), a core sleeve ring (32) for accommodating the core sleeve (5), and a flow guide cabinet groove (33) of the flow guide cabinet (6); the inner core ring (31), the core sleeve ring (32) and the flow guide cabinet groove (33) are connected to each other to form a connected chamber; the interior of the core sleeve (5) is filled with 1211 fire extinguishing material for fire extinguishing; a thin-walled and easily squeezed sealing ring (53) is provided on one side of the core sleeve (5), and an extrudable pressing groove (52) is provided on the other side; a bursting port (51) accommodated in the flow guide cabinet (6) is provided on one side of the core sleeve (5), and the bursting port (51) is aligned with the sealing ring (53); the opening of the flow guide cabinet (6) faces the interior of the inner core ring (31).

2. A self-protecting fireproof cable according to claim 1, characterized in that: A pressing mechanism (7) is arranged inside the pressing groove (52), and the pressing mechanism (7) comprises a pressing arc plate (71), a sliding column (72), a movable plate (73) and a fixed plate (74); the fixed plate (74) is fixedly connected to the pressing groove (52); the sliding column (72) is movably connected to the fixed plate (74); one end of the sliding column (72) is fixedly connected to the movable plate (73); the other end of the sliding column (72) is fixedly connected to the pressing arc plate (71); and the movable plate (73) is movably connected to the pressing groove (52).

3. A self-protecting fireproof cable according to claim 2, characterized in that: One end of the pressing arc plate (71) away from the sliding column (72) is arranged as an arc surface having the same curvature as the core ring (32).

4. A self-protecting fireproof cable according to claim 3, characterized in that: The explosion openings (51) are provided in multiple groups and are all located inside the flow guide cabinet (6).

5. A self-protecting fireproof cable according to claim 4, characterized in that: The core sleeve (5) and the flow guide cabinet (6) are made entirely of silica gel.

6. A self-protecting fireproof cable according to claim 5, characterized in that: The pressing mechanism (7) is made entirely of acrylic material.

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