A high temperature resistant cable

Abstract

The present invention belongs to the technical field of protecting electrical components from damage caused by external factors, and discloses a high temperature resistant cable, including a main core, a wrapping layer, a shielding layer and a sheath arranged in sequence from the inside to the outside, the main core is wrapped with a conductor and an insulating layer in sequence, a plurality of main cores are arranged, and they are twisted into a cable, a first heat dissipation layer is also included outside the insulating layer, and a second heat dissipation layer is arranged between the wrapping layer and the shielding layer; the sheath is a high temperature resistant sheath; and the main core is also wrapped with a supporting structure. The present invention solves the problem that the current cable has poor high temperature resistance and cannot meet the actual needs under high temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of protecting electrical components from damage caused by external factors, and in particular relates to a high temperature resistant cable. Background Art

[0002] Cables are made of one or more mutually insulated conductors and an outer insulating protective layer. They transmit electricity or information from one place to another. They are usually rope-like cables made of several or several groups of conductors (at least two in each group). Each group of conductors is insulated from each other and often twisted around a center. The entire outer layer is covered with a highly insulating covering. The cable has the characteristics of being powered inside and insulated outside.

[0003] With the development of science and technology, people have more and more demands on cables, and the use environment of cables is also increasing. In some special environments, the working temperature is high, so the cables need to have high high temperature resistance. The covering layer of cables on the market is basically made of flame-retardant polyolefin, EPDM and other low-smoke halogen-free materials, but the temperature resistance level of such materials is not high and cannot meet the actual use needs. Summary of the invention

[0004] The present invention is intended to provide a high temperature resistant cable to solve the problem that the current cables have poor high temperature resistance and cannot meet the actual needs under high temperature.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a high-temperature resistant cable, comprising a main core, a wrapping layer, a shielding layer and a sheath arranged in sequence from the inside to the outside, the main core is wrapped with a conductor and an insulating layer in sequence, a plurality of main cores are arranged and twisted into a cable, a first heat dissipation layer is also included outside the insulating layer, and a second heat dissipation layer is arranged between the wrapping layer and the shielding layer; the sheath is a high-temperature resistant sheath; and a supporting structure is also wrapped outside the main core.

[0006] In the above technical solution, multiple main cores are provided to improve the strength and increase the service life of the cable in a high temperature environment. The first heat dissipation layer and the second heat dissipation layer are provided to dissipate heat for the cable, so that it can be used in a higher temperature environment and improve the high temperature resistance of the cable. The high temperature resistance of the cable can be further improved by setting the sheath as a high temperature resistant sheath. Wrapping the supporting structure outside the main core can protect the main core, reduce the probability of cable damage, and increase the service life.

[0007] In a preferred embodiment of the present invention, the support structure includes a flexible frame wrapped around the main line core, the frame is rectangular, a filling layer is filled between the frame and the main line core, and a heat sink is arranged between the frame and the wrapping layer.

[0008] In a preferred embodiment of the present invention, a plurality of mounting grooves are circumferentially arranged on the outer periphery of the wrapping layer, the mounting grooves are extended axially along the wrapping layer, heat dissipation pipes are arranged in the mounting grooves, the ends of the heat dissipation pipes are sealed, and the heat dissipation pipes are filled with coolant.

[0009] In a preferred embodiment of the present invention, a plurality of reinforcement grooves are provided on the inner wall of the cladding layer along the circumferential direction, and reinforcement cores are arranged in the reinforcement grooves.

[0010] In a preferred embodiment of the present invention, a reinforcement wire layer is further wound outside the wrapping layer.

[0011] In another preferred embodiment of the present invention, the reinforcing wire layer is a flexible coil.

[0012] In another preferred embodiment of the present invention, a plurality of flow channels are arranged in the sheath, and the flow channels are communicated with the outside.

[0013] In another preferred embodiment of the present invention, the sheath is provided with a plurality of through holes connected to the flow channel in the middle, the sheath is also wrapped with a flow controller, the flow controller is provided with a plurality of ports connected to the through holes, and the flow controller is also provided with an exhaust fan.

[0014] In another preferred embodiment of the present invention, a driving member is also fixed on the circulation device, and the driving member includes a movable plug, a slide plate is slidably connected to the movable plug, an elastic member is also provided between the slide plate and the movable plug, a push rod is hinged on the slide plate, the push rod is hinged to the switch of the exhaust fan, and the movable plug is filled with an inert gas that can expand when heated.

[0015] In another preferred embodiment of the present invention, the switch of the exhaust fan can be adjusted.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a longitudinal cross-sectional view of an embodiment of the present application.

[0019] Figure 2 It is a schematic diagram of the structure of an embodiment of the present application.

[0020] Figure 3 It is a schematic diagram of the structure of the movable plug in the embodiment of the present application.

[0021] The figure marks in the drawings of the specification include: main line core 1, wrapping layer 2, second heat dissipation layer 3, shielding layer 4, sheath 5, conductor 6, insulation layer 7, first heat dissipation layer 8, frame 9, filling layer 10, heat dissipation block 11, heat dissipation pipe 12, reinforcement core 13, reinforcement line layer 14, flow channel 15, circulation device 16, through hole 17, port 18, exhaust fan 19, movable plug 20, slide plate 21, push rod 22. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it is to be understood that the terms “longitudinal”, “lateral”, “vertical”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a mechanical connection or an electrical connection, or it can be the internal connection between two components. It can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to the specific circumstances.

[0025] The present invention provides a high temperature resistant cable, such as Figure 1 As shown, in a preferred embodiment of the present invention, it includes a main core 1, a wrapping layer 2, a second heat dissipation layer 3, a shielding layer 4 and a sheath 5 arranged in sequence from the inside to the outside, and the sheath 5 is a high temperature resistant sheath 5. There are multiple main cores 1, and the multiple main cores 1 are twisted into a cable, which is wrapped with a conductor 6, an insulating layer 7 and a first heat dissipation layer 8 in sequence.

[0026] The main core 1 of the twisted cable is also wrapped with a support structure, and the gap between the support structure and the main core 1 is filled with a filling layer 10. The support structure wraps a flexible frame 9 wrapped outside the main core 1, the frame 9 is rectangular, and a heat sink 11 is arranged between the frame 9 and the wrapping layer 2.

[0027] A plurality of mounting grooves are evenly arranged along the circumference of the outer circumference of the wrapping layer 2, and the specific number of the mounting grooves is selected according to actual needs, and the mounting grooves are extended along the circumference of the wrapping layer 2. A heat dissipation pipe 12 is arranged in the mounting groove, and both ends of the heat dissipation pipe 12 are sealed, and the heat dissipation pipe 12 is filled with a coolant, so that when the cable is heated during operation and use, the temperature can be reduced, thereby improving the high temperature resistance of the cable.

[0028] A plurality of reinforcement grooves are arranged along the circumferential direction on the inner wall of the wrapping layer 2, and a reinforcement core 13 is arranged in the reinforcement groove, so that the strength of the whole cable can be increased and the service life of the cable can be improved. A flexible coil is also wound around the wrapping layer 2 to form a reinforcement wire layer 14, which further improves the strength of the whole cable and tightly fixes the heat dissipation pipe 12.

[0029] A plurality of flow channels 15 are arranged circumferentially in the sheath 5, and the specific number in this embodiment is selected according to actual needs. Both ends of the flow channel 15 are connected to the outside, and the flow channel 15 extends along the axial direction of the sheath 5. A plurality of through holes 17 are also arranged in the middle of the sheath 5 along the circumferential direction, which are respectively connected to the flow channels 15.

[0030] Combination Figure 2 As shown, the sheath 5 is also wrapped with a flow device 16, which is annular and wrapped outside the through hole 17. The inner circle of the flow device 16 is provided with a plurality of ports 18 respectively connected with the plurality of through holes 17, and the flow device 16 is also provided with an exhaust fan 19. When the exhaust fan 19 is started, it can exhaust air through the ports 18 and the through holes 17, so as to realize the flow of gas in the flow channel 15. The exhaust fan 19 is provided with a switch, and the switch can adjust the gear of the exhaust fan 19.

[0031] A driving member is also fixed on the circulation device 16. Figure 3 As shown, the driving member wraps around the movable plug 20 fixed on the circulation device 16, and one end of the movable plug 20 is open and the other end is sealed. A slide plate 21 is slidably connected inside the movable plug 20, and an elastic member is welded between the slide plate 21 and the sealed end of the movable plug 20. In this embodiment, the elastic member is a compression spring, and the specific model is selected according to actual needs. A push rod 22 is hinged on the side of the slide plate 21 close to the opening of the movable plug 20, and the end of the push rod 22 away from the slide plate 21 is hinged to the exhaust fan 19, so the exhaust fan 19 can be turned on and adjusted by driving the switch to move by the push rod 22. Inert gas is injected between the sealed end and the slide plate 21 in the movable plug 20. According to the characteristics of thermal expansion and contraction of the inert gas, and in conjunction with the resetting of the elastic member, the reciprocating movement of the slide plate 21 can be achieved.

[0032] When preparing the high-temperature cable provided in this embodiment, the first step is to wrap the conductor 6 and the insulating layer 7 in sequence outside the main core 1, and the insulating layer 7 is formed by extrusion. The second step is to extrude the first heat dissipation layer 8 outside the insulating layer 7. The third step is to twist multiple main cores 1 into a cable. The fourth step is to paste the filling layer 10 outside the main core 1 twisted into a cable, and the outer shape of the filling layer 10 is consistent with the inner shape of the frame 9. The fifth step is to insert the main core 1 pasted with the filling layer 10 into the frame 9. The sixth step is to paste the heat dissipation block 11 outside the frame 9 and form it into a cylindrical shape. The sixth step is to arrange the reinforcing core 13 outside the heat dissipation pipe 12. The seventh step is to extrude the outer heat dissipation pipe 12 to form the wrapping layer 2. Due to the setting of the heat dissipation pipe 12, a reinforcing groove is formed on the inner side of the wrapping layer 2, and the extrusion molding equipment is set so that multiple installation grooves can be formed on the outer wall of the wrapping layer 2. The eighth step is to arrange the heat dissipation pipe 12 filled with coolant in the installation groove. In the ninth step, the coil is wound around the wrapping layer 2 to form a reinforcing wire layer 14. In the tenth step, the shielding layer 4 is extruded outside the reinforcing wire layer 14. Finally, a sheath 5 is provided outside the shielding layer 4.

[0033] The specific usage process is as follows:

[0034] When in use, the cable is installed at the position where it is needed. By setting the first heat dissipation layer 8 outside the main core 1, heat can be dissipated during the use of the cable, thereby reducing the damage of the main core 1 caused by high temperature. The support structure is set outside the main core 1 to strengthen and support the structure of the entire cable, thereby improving the strength of the entire cable and improving the strength of the cable; and the support structure uses a flexible frame 9, which can realize the folding and curling of the cable, facilitating the installation and use of the cable.

[0035] A filling layer 10 is provided between the frame 9 and the main core 1, and the filling layer 10 uses a heat sink 11, so that there is no gap between the frame 9 and the main core 1, thereby forming a stable structure to avoid falling off during use. At the same time, since the heat sink 11 is used as the filling layer 10, the heat dissipation effect can be further improved.

[0036] The reinforcing core 13 is arranged on the inner wall of the wrapping layer 2, and the heat dissipation tube 12 is arranged on the outer side, so that the structure of the wrapping layer 2 can be more stable and stronger, thereby improving the strength of the entire cable and extending the service life. In addition, the coolant in the heat dissipation tube 12 can improve the heat dissipation effect. The reinforcing wire layer 14 is formed by winding the coil outside the wrapping layer 2, so that the heat dissipation tube 12 can be closely attached to the wrapping layer 2 and improve the strength of the cable.

[0037] The high temperature resistant sheath 5 is arranged on the outermost side of the cable, which can improve the high temperature resistance of the entire cable. When used in a high temperature annular state, according to the principle of thermal barrier and contraction, the inert gas in the movable plug 20 will expand, so that the slide plate 21 will slide, thereby driving the push rod 22 to push the switch of the exhaust fan 19 to move, so that the exhaust fan 19 can be operated. When the exhaust fan 19 is in operation, it will exhaust air through the port 18, the through hole 17 and the flow channel 15 of the circulator 16, so that gas will enter from the end of the flow channel 15 and flow in the flow channel 15, thereby cooling the sheath 5.

[0038] In summary, the present invention can enable the cable to be used at high temperatures by arranging the structure of the cable. At the same time, the first heat dissipation layer 8, the second heat dissipation layer 3, the heat dissipation block 11, and the cooling liquid in the heat dissipation pipe 12 are used to reduce the temperature, which can reduce the damage to the main core 1 during operation and improve the service life of the entire cable. In addition, the support structure, the wrapping layer 2 structure, and the reinforcing wire layer 14 can make the strength of the cable higher, so the service life of the cable is longer. Therefore, the high temperature resistant cable provided by the present invention can be used at high temperatures and has high strength, which can extend the service life of the cable.

[0039] In the description of this specification, the description with reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0040] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high temperature resistant cable, comprising a main core, a wrapping layer, a shielding layer and a sheath arranged in sequence from the inside to the outside, wherein the main core is wrapped with a conductor and an insulating layer in sequence, characterized in that: There are multiple main line cores, which are twisted into a cable. The insulation layer includes a first heat dissipation layer, and a second heat dissipation layer is provided between the wrapping layer and the shielding layer. The sheath is a high temperature resistant sheath. The main line core is also wrapped with a support structure. The supporting structure includes a flexible frame wrapped outside the main line core, the frame is rectangular, a filling layer is filled between the frame and the main line core, and a heat dissipation block is arranged between the frame and the wrapping layer; A plurality of mounting grooves are arranged along the circumferential direction on the outer circumference of the wrapping layer, and the mounting grooves are extended along the axial direction of the wrapping layer. Heat dissipation pipes are arranged in the mounting grooves, and the ends of the heat dissipation pipes are sealed, and the heat dissipation pipes are filled with coolant; A plurality of flow channels are arranged in the sheath, and the flow channels are connected to the outside; a plurality of through holes are arranged on the sheath, which are connected to the flow channels in the middle; a flow device is also wrapped on the sheath, and a plurality of ports connected to the through holes are arranged on the flow device; and an exhaust fan is also arranged on the flow device; A driving member is also fixed on the circulation device, and the driving member includes a movable plug, a slide plate is slidably connected inside the movable plug, an elastic member is also provided between the slide plate and the movable plug, a push rod is hinged on the slide plate, the push rod is hinged to the switch of the exhaust fan, and the movable plug is filled with inert gas that can expand when heated.

2. A high temperature resistant cable according to claim 1, characterized in that: A plurality of reinforcement grooves are arranged on the inner wall of the wrapping layer along the circumferential direction, and reinforcement cores are arranged in the reinforcement grooves.

3. A high temperature resistant cable according to claim 2, characterized in that: A reinforcement wire layer is also wound outside the sheath.

4. A high temperature resistant cable according to claim 3, characterized in that: The reinforcing wire layer is a flexible coil.

5. A high temperature resistant cable according to claim 4, characterized in that: The switch of the exhaust fan can be adjusted.

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