A fire-resistant power cable

Abstract

The present application provides a fire-resistant power cable, including a sheath, wherein four conductors are arranged inside the sheath, and a protective mechanism is arranged inside the sheath, wherein the protective mechanism includes a cross plate, wherein the cross plate is located inside the sheath, and four vertical blocks are fixedly connected on both sides of the cross plate, wherein the four vertical blocks are arranged in groups of two, and a long rod is rotatably connected to the surface of the vertical blocks in the same group, and a plurality of storage frames are fixedly connected to the arc surface of the long rod, wherein bicarbonate particles are arranged inside the storage frame, and filter plates are installed on both sides of the storage frame. The present application can improve the fire resistance of the cable by means of the fireproof performance of the sheath through the provision of the sheath, torsion spring, storage frame, bicarbonate particles and airbag cushion, and can improve the stability of the conductor inside the cable by means of the elastic force of the torsion spring. When the cable is on fire due to high temperature, the airbag cushion ruptures, and the bicarbonate reacts with heat to release carbon dioxide and water.

Description

Technical Field

[0001] The present invention relates to the technical field of cables, and in particular to a fire-resistant power cable. Background Art

[0002] Cable refers to a conductor with an insulating layer and a protective sheath, which is composed of multiple insulated wires. They are often installed in the air or underground or underwater for telecommunications or power transmission. Fire-resistant power cables are usually cables designed to maintain their electrical performance and structural integrity under fire conditions. These cables can resist high temperatures, flames and smoke during a fire. Existing cables are usually filled with flame retardants inside the cable, but when the cable is caught fire due to high temperature, it is difficult to stop the spread of the fire.

[0003] For example: The Chinese invention patent (application number: 202310052867.0) discloses a "low-smoke, halogen-free, flame-retardant and fire-resistant power cable". Its specification discloses: The low-smoke, halogen-free, flame-retardant and fire-resistant power cables currently on the market are difficult to prevent fires caused by high temperatures inside the cables, and after filling with flame retardants, the inside of the cables is loose and has poor anti-extrusion ability, which can easily cause the outer insulation layer to rupture due to extrusion; the above application can prove the defects of the prior art.

[0004] Therefore, we have made improvements to this and proposed a fire-resistant power cable. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing existing cables are usually filled with flame retardants inside the cables, but when the cables catch fire due to high temperature, it is difficult to prevent the fire from spreading.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following fire-resistant power cable to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] A fire-resistant power cable comprises a sheath, wherein four conductors are arranged inside the sheath, and a protective mechanism is arranged inside the sheath, wherein the protective mechanism comprises a cross plate, wherein the cross plate is located inside the sheath, and four vertical blocks are fixedly connected on both sides of the cross plate, wherein the four vertical blocks are grouped in pairs, and a long rod is rotatably connected to the surface of the vertical blocks in the same group, and a plurality of storage frames are fixedly connected to the arc surface of the long rod, wherein bicarbonate particles are arranged inside the storage frame, and filter plates are installed on both sides of the storage frame, and two airbag cushions are bonded to the inner wall of the sheath, and a plurality of circular holes are opened on the end surface of the cross plate.

[0009] As a preferred technical solution of the present application, the arc surface of the long rod is sleeved with two torsion springs, and the two ends of the torsion spring are respectively fixedly connected to the vertical block and the long rod.

[0010] As a preferred technical solution of the present application, a circular tube is provided inside the sheath, the cross plate is fixedly connected to the arc surface of the circular tube, the arc surface of the conductor is covered with a waterproof cover, and the interior of the airbag cushion is filled with carbon dioxide gas.

[0011] As a preferred technical solution of the present application, a plurality of the storage frames are evenly distributed on the arc surface of the long rod, and the cross-sectional shape of the storage frames is an arc shape.

[0012] As a preferred technical solution of the present application, the arc surface of the sleeve is provided with a connecting heat dissipation mechanism, and the connecting heat dissipation mechanism includes a sealing sleeve, and the sealing sleeve is arranged on the arc surface of the sleeve, one end of the sealing sleeve is fixedly connected with a sleeve, and both sides of the sleeve are fixedly connected with a rectangular block, and the end surface of the rectangular block is provided with two sockets, and the end surface of the rectangular block is provided with a plug plate through the two sockets.

[0013] As a preferred technical solution of the present application, a plurality of protrusions are fixedly connected to one end of the sleeve, and the plurality of protrusions are evenly distributed on the end surface of the sleeve.

[0014] As a preferred technical solution of the present application, a heat sink is installed on the arc surface of the sleeve, a conduit is provided inside the circular tube, one end of the conduit is connected to a water pipe, the other end of the water pipe passes through the sleeve and the heat sink and is connected to the conduit, a plurality of heat sinks are fixedly connected to the inner wall of the circular tube, a water pump is provided inside the conduit, and one end of the water pipe is connected to the water pump.

[0015] As a preferred technical solution of the present application, the arc surface of the sleeve is provided with a supporting mechanism, and the supporting mechanism includes two fixing rods, and the two fixing rods are fixedly connected to the arc surface of the sleeve, and one end of the two fixing rods close to each other is rotatably connected to a supporting plate, and both ends of the supporting plate are rotatably connected to a rectangular frame, and the inner wall of the rectangular frame is slidably connected to a pad.

[0016] As a preferred technical solution of the present application, the cross-sectional shape of the pad is L-shaped, the end surface of the pad is fixedly connected to the vertical plate, and the side wall of the vertical plate is threadedly connected to a screw.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In the scheme of this application:

[0019] 1. The present application provides a sheath, a torsion spring, a storage frame, bicarbonate particles and an airbag cushion. With the help of the fireproof performance of the sheath, the fire resistance of the cable can be improved. With the help of the elastic force of the torsion spring, the stability of the conductor inside the cable can be improved. When the cable is on fire due to high temperature, the airbag cushion ruptures, and the bicarbonate reacts with heat to release carbon dioxide and water. With the release of carbon dioxide in the airbag cushion, the fire can be extinguished to a certain extent, thereby improving the protection capability of the cable.

[0020] 2. The present application provides a sealing sleeve, a sleeve, a jack and a plug-in board. When connecting two sections of cables, the cables can be connected by plugging the jack and the plug-in board together, which is convenient and quick. With the help of the sealing sleeve, the sealing ability of the cable connection is improved. Through the conduit, the water pipe, the heat sink and the heat sink, the heat generated by the conductor is transferred to the heat sink, which can be absorbed by the water flowing in the conduit and transferred to the external heat sink by the water pipe for heat dissipation. The internal conductor of the cable can be cooled in real time, which improves the protection ability of the cable to a certain extent.

[0021] 3. The present application sets a fixing rod, a support plate, a rectangular frame and a pad. When it is necessary to carry the cable, the fixing rod and the support plate can be rotated to adjust the angle of the support plate and flip the support plate. The internal capacity of the support plate can be adjusted by sliding the rectangular frame and the pad, and the other end of the cable can be placed on the support plate, so that the two sections of cable can be carried in sequence. After the cable is connected, when placing it, the pad can be supported on the ground by rotating the support plate. The height of the support plate can be adjusted by sliding the rectangular frame and the pad, so as to avoid the cable directly contacting the ground and being worn or immersed in water as much as possible. That is, the support plate, the rectangular frame and the pad make it easier to carry the cable and expand the capacity of the support plate when installing the cable, and support the cable and adjust the height of the cable when protecting the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the three-dimensional structure of this application;

[0023] Figure 2 For this application Figure 1 Schematic diagram of some structures;

[0024] Figure 3 For this application Figure 1 Schematic diagram of the internal structure;

[0025] Figure 4 For this application Figure 1 A schematic diagram of the front view structure of

[0026] Figure 5 This is a schematic diagram of the structure of the cross plate of this application;

[0027] Figure 6 This is a schematic diagram of the split structure of the storage frame for this application;

[0028] Figure 7 This is a schematic diagram of the cross-sectional structure of the heat dissipation box and water pipe of this application;

[0029] Figure 8 A schematic diagram of the structure of the transformation of the supporting organization for this application;

[0030] Fig. 9 This is a partial structural schematic diagram of the casing of this application;

[0031] Fig.10 This is a schematic diagram of the cross-sectional structure of the conduit and water pipe of this application.

[0032] Indicated in the figure:

[0033] 1. Sheath; 11. Conductor; 12. Waterproof cover; 2. Protective mechanism; 21. Round tube; 22. Cross plate; 23. Vertical block; 24. Long rod; 25. Storage frame; 251. Bicarbonate particles; 26. Torsion spring; 27. Filter plate; 28. Airbag cushion; 29. ​​Round hole; 3. Connect heat dissipation mechanism; 31. Sealing sleeve; 32. Casing; 33. Heat dissipation box; 34. Conduit; 35. Water pipe; 36. Heat sink; 37. Rectangular block; 38. Socket; 39. Plug plate; 310. Bump; 4. Support mechanism; 41. Fixing rod; 42. Support plate; 43. Rectangular frame; 44. Pad; 45. Vertical plate; 46. Screw. DETAILED DESCRIPTION

[0034] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0035] Specifically, please refer to Figure 1-10 , the present application provides a technical solution for a fire-resistant power cable:

[0036] Embodiment 1

[0037] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A fire-resistant power cable comprises a sheath 1, wherein the sheath 1 adopts a special polymer, such as a polymer reinforced with a mineral filler, to improve the fire resistance, wherein four conductors 11 are arranged inside the sheath 1, wherein a protective mechanism 2 is arranged inside the sheath 1, wherein the protective mechanism 2 comprises a cross plate 22, wherein the cross plate 22 is made of a heat-conducting material, wherein the cross plate 22 is located inside the sheath 1, wherein four vertical blocks 23 are fixedly connected on both sides of the cross plate 22, wherein the four vertical blocks 23 are grouped in pairs, wherein a long rod 24 is rotatably connected to the surface of the vertical blocks 23 in the same group, wherein a plurality of storage frames 25 are fixedly connected to the arc surface of the long rod 24, wherein bicarbonate particles 251 are arranged inside the storage frame 25, wherein filter plates 27 are installed on both sides of the storage frame 25, wherein two airbag cushions 28 are bonded to the inner wall of the sheath 1, wherein the interior of the airbag cushions 28 is filled with carbon dioxide gas, wherein a plurality of circular holes 29 are provided on the end surface of the cross plate 22 to ensure that the carbon dioxide gas can pass through the cross plate 22.

[0038] The bicarbonate particles 251 react when heated to release carbon dioxide and water, and with the release of carbon dioxide in the airbag cushion 28, the fire can be extinguished to a certain extent, thereby improving the protection capability of the cable.

[0039] The arc surface of the long rod 24 is sleeved with two torsion springs 26, and the two ends of the torsion spring 26 are fixedly connected to the upright block 23 and the long rod 24 respectively. The torsion spring 26 plays a role in stabilizing the conductor 11. A round tube 21 is provided inside the sheath 1, and the round tube 21 is made of heat-conducting material. The cross plate 22 is fixedly connected to the arc surface of the round tube 21. The arc surface of the conductor 11 is sleeved with a waterproof cover 12, and the waterproof cover 12 plays a role in waterproofing the conductor 11. Multiple storage frames 25 are evenly distributed on the arc surface of the long rod 24. The cross-sectional shape of the storage frame 25 is arc-shaped, which can better fit the conductor 11.

[0040] Embodiment 2

[0041] The fire-resistant power cable provided in the first embodiment is further optimized. Specifically, Figure 2 , Figure 3 , Figure 7 and Fig.10 As shown, the arc surface of the sheath 1 is provided with a connecting heat dissipation mechanism 3, and the connecting heat dissipation mechanism 3 includes a sealing sleeve 31, and the sealing sleeve 31 is sleeved on the arc surface of the sheath 1. One end of the sealing sleeve 31 is fixedly connected with a sleeve 32, and both sides of the sleeve 32 are fixedly connected with a rectangular block 37. The end surface of the rectangular block 37 is provided with two holes 38, and the end surface of the rectangular block 37 is provided with a plug plate 39 through the two plug holes 38. There are two plug rods on the plug plate 39 to cooperate with the holes 38 for stability.

[0042] One end of the sleeve 32 is fixedly connected with a plurality of protrusions 310 , and the plurality of protrusions 310 are evenly distributed on the end surface of the sleeve 32 . The protrusions 310 play a role in connecting the sleeve 32 .

[0043] A heat sink 33 is installed on the arc surface of the sleeve 32. The heat sink 33 is made of heat-conducting material. A conduit 34 is provided inside the circular tube 21. The conduit 34 is filled with cooling water. One end of the conduit 34 is connected to a water pipe 35. The other end of the water pipe 35 passes through the sleeve 32 and the heat sink 33 and is connected to the conduit 34. A plurality of heat sinks 36 are fixedly connected to the inner wall of the circular tube 21. A water pump is provided inside the conduit 34. One end of the water pipe 35 is connected to the water pump. The water pipe 35 is led out by the water pump, passes through the conduit 34 and the heat sink 33, and is arranged in an S shape inside the heat sink 33, sticks to the inner wall of the heat sink 33, and finally returns to the conduit 34. The conduit 34 is detachable.

[0044] After the heat generated by the conductor 11 is transferred to the heat sink 36, it can be absorbed by the water flowing in the conduit 34 and transferred to the external heat sink 33 for heat dissipation through the water pipe 35. The conductor 11 inside the cable can be cooled in real time, thereby improving the protection capability of the cable to a certain extent.

[0045] Embodiment 3

[0046] The fire-resistant power cable provided in the first or second embodiment is further optimized, specifically, as follows: Figure 1 , Figure 8 and Fig. 9 As shown, the arc surface of the sleeve 32 is provided with a supporting mechanism 4, and the supporting mechanism 4 includes two fixing rods 41, and the two fixing rods 41 are fixedly connected to the arc surface of the sleeve 32, and one end of the two fixing rods 41 close to each other is rotatably connected to a supporting plate 42, and the supporting plate 42 is arc-shaped, and both ends of the supporting plate 42 are rotatably connected to a rectangular frame 43, and the inner wall of the rectangular frame 43 is slidably connected to a pad 44.

[0047] The cross-section of the backing plate 44 is L-shaped. The end surface of the backing plate 44 is fixedly connected to the vertical plate 45 , and the side wall of the vertical plate 45 is threadedly connected to the screw 46 .

[0048] The support plate 42, rectangular frame 43 and pad 44 facilitate carrying of the cable and expand the capacity of the support plate 42 when installing the cable, and support the cable and adjust the height of the cable when protecting the cable.

[0049] The use process of a fire-resistant power cable provided by the present invention is as follows:

[0050] Working principle: When using, if you need to move the cable, you can first rotate the rectangular frame 43 so that the two screws 46 are located on the side close to each other, and then rotate the support plate 42 to turn the support plate 42 180 degrees. Figure 8As shown, the pad 44 is then pulled by sliding the rectangular frame 43 and the pad 44 to adjust the height of the two ends of the support plate 42. After adjusting to a suitable position, the screw 46 is screwed, and the screw 46 is driven by the thread until the screw 46 is squeezed onto the rectangular frame 43 to stabilize the pad 44. Then, another section of the cable can be placed on the support plate 42, and the two sections of the cable are just squeezed against each other to stabilize them, so as to achieve the effect of carrying two sections of the cable at one time. When connecting the cables, after the conductors 11 in the two sections of the cable are connected, the sealing sleeves 31 on the two sections of the cable can be moved to make the sleeves 32 engage with each other, and there will be two rectangular blocks 37 on both sides of the two sections of the cable, that is, the two rectangular blocks 37 on the same side will have a total of four sockets 38. The plug 39 on the same side is pulled out and plugged into the two middle sockets 38, that is, the two rectangular blocks 37 on the same side each occupy one socket 38, so as to achieve the effect of stabilizing the sleeve 32. In order to prevent the cable sheath 1 from directly contacting the ground, the support plate 42 is flipped back, and the support plate 4 2 will be arched, the pad 44 will contact the ground, and the height of the support plate 42 can be adjusted by sliding the pad 44 to play a supporting role. During the use of the cable, the conductor 11 will generate heat, which can be transferred to the heat sink 36 through the conduction of the round tube 21 and the cross plate 22. The heat sink 36 is in contact with the conduit 34, so the heat on the heat sink 36 will be taken away by the water inside the conduit 34, and transferred through the water pump and water pipe 35 inside the conduit 34, and pass through the heat sink 33. Since the heat sink 33 is made of heat-conducting material, the water pipe 35 is arranged on the inner wall of the heat sink 33, and the water in the water pipe 35 will accelerate the heat dissipation, and finally flow back into the conduit 34 to continue cooling. When the conductor 11 catches fire due to high temperature, the airbag cushion 28 will be burned first, and the carbon dioxide inside the airbag cushion 28 will pour out and rush to the fire source. In addition, the bicarbonate inside the storage frame 25 will react after being subjected to high temperature to produce carbon dioxide and water, which also plays a protective role to a certain extent.

[0051] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Obviously, the embodiments described above are only some embodiments of the present invention, rather than all embodiments. The preferred embodiments of the present invention are given in the accompanying drawings, but they do not limit the patent scope of the present invention. The present invention can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive. Although the present invention has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific embodiments, or to perform equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the specification and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present invention.

Claims

1. A fire-resistant power cable, comprising a sheath (1), wherein four conductors (11) are arranged inside the sheath (1), characterized in that: A protective mechanism (2) is provided inside the protective sleeve (1), and the protective mechanism (2) comprises a cross plate (22), the cross plate (22) is located inside the protective sleeve (1), and four vertical blocks (23) are fixedly connected to both sides of the cross plate (22), and the four vertical blocks (23) are grouped in pairs, and the surfaces of the vertical blocks (23) in the same group are rotatably connected to long rods (24), and the arc surfaces of the long rods (24) are fixedly connected to a plurality of storage frames (25), and the storage frames (25) are provided with carbonic acid inside. Hydrogen salt particles (251), filter plates (27) are installed on both sides of the storage frame (25), two airbag cushions (28) are bonded to the inner wall of the sheath (1), a plurality of circular holes (29) are opened on the end surface of the cross plate (22), a circular tube (21) is arranged inside the sheath (1), the cross plate (22) is fixedly connected to the circular arc surface of the circular tube (21), the circular arc surface of the conductor (11) is covered with a waterproof cover (12), and the interior of the airbag cushion (28) is filled with carbon dioxide gas; The arc surface of the sleeve (1) is provided with a connecting heat dissipation mechanism (3), the connecting heat dissipation mechanism (3) comprises a sealing sleeve (31), the sealing sleeve (31) is sleeved on the arc surface of the sleeve (1), one end of the sealing sleeve (31) is fixedly connected to a sleeve (32), both sides of the sleeve (32) are fixedly connected to a rectangular block (37), the end surface of the rectangular block (37) is provided with two insertion holes (38), and the end surface of the rectangular block (37) is provided with an insertion plate (39) through the two insertion holes (38); A heat sink (33) is installed on the arc surface of the sleeve (32); a conduit (34) is provided inside the circular tube (21); one end of the conduit (34) is connected to a water pipe (35); the other end of the water pipe (35) passes through the sleeve (32) and the heat sink (33) and is connected to the conduit (34); a plurality of heat sinks (36) are fixedly connected to the inner wall of the circular tube (21); a water pump is provided inside the conduit (34); and one end of the water pipe (35) is connected to the water pump; The arc surface of the sleeve (32) is provided with a support mechanism (4), and the support mechanism (4) comprises two fixing rods (41), and the two fixing rods (41) are fixedly connected to the arc surface of the sleeve (32), and one end of the two fixing rods (41) close to each other is rotatably connected to a support plate (42), and both ends of the support plate (42) are rotatably connected to a rectangular frame (43), and the inner wall of the rectangular frame (43) is slidably connected to a pad (44), and the cross-section of the pad (44) is L-shaped, and the end surface of the pad (44) is fixedly connected to a vertical plate (45), and the side wall of the vertical plate (45) is threadedly connected to a screw (46).

2. A fire-resistant power cable according to claim 1, characterized in that: The arc surface of the long rod (24) is sleeved with two torsion springs (26), and the two ends of the torsion spring (26) are respectively fixedly connected to the vertical block (23) and the long rod (24).

3. A fire-resistant power cable according to claim 1, characterized in that: The plurality of storage frames (25) are evenly distributed on the arc surface of the long rod (24), and the cross-section of the storage frames (25) is in the shape of an arc.

4. A fire-resistant power cable according to claim 1, characterized in that: One end of the sleeve (32) is fixedly connected to a plurality of protrusions (310), and the plurality of protrusions (310) are evenly distributed on the end surface of the sleeve (32).

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