CN214541660U - Temperature-resistant high-voltage cable - Google Patents
Temperature-resistant high-voltage cable Download PDFInfo
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- CN214541660U CN214541660U CN202120534613.9U CN202120534613U CN214541660U CN 214541660 U CN214541660 U CN 214541660U CN 202120534613 U CN202120534613 U CN 202120534613U CN 214541660 U CN214541660 U CN 214541660U
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Abstract
The utility model discloses a temperature resistant type high tension cable relates to high tension cable technical field. The utility model discloses a plurality of high-voltage electricity core and a plurality of heat conduction silicone grease insulation board, one side fixed connection and tie point of each other of a plurality of heat conduction silicone grease insulation boards are located cable cross section's center department, and high-voltage electricity core is located the contained angle between the double-phase adjacent heat conduction silicone grease insulation board. The utility model discloses an install heat conduction silicone grease insulation board additional in heat conduction silicone grease insulating layer inboard, make high tension cable have better heat-sinking capability, the temperature of metal electricity core has been reduced to a certain extent, and then the resistance of metal electricity core has been reduced, and then the loss of electric power has been reduced, install the cooling flame retardant coating additional in proper order through the outside at heat conduction silicone grease insulating layer, interior fire-resistant heat insulation layer, heat-insulating armor fire-blocking layer of cooling and fire-retardant oversheath, make high tension cable have better fire behavior, strive for more rescue time when taking place the condition of a fire for high tension cable.
Description
Technical Field
The utility model belongs to the technical field of high tension cable, especially, relate to a temperature resistant type high tension cable.
Background
The high voltage cable is a kind of power cable, which is used for transmitting power between 1kv and 1000kv, and is widely used for power transmission and distribution. The electric core of the high-voltage cable mainly comprises an aluminum core and a copper core, and due to the excellent conductivity of a copper conductor, more and more projects adopt the copper core power cable as a main road of a power supply system, while the application of the aluminum core power cable is less, and particularly in a higher-voltage power system, the more the copper core power cable is selected.
Since the power cable needs to pass through building facilities and areas with relatively dense population, and the power cable in the areas is more susceptible to power accidents due to the influence of complex natural factors, the power cable needs to have reliable fireproof function in order to prevent the power accidents from causing fire disasters or causing secondary accidents under the condition of being damaged by fire disasters. Although high-voltage cables with fireproof function are available at present, the fireproof capacity is still unsatisfactory. In the power transmission process, the battery core can generate heat to cause the temperature of the battery core to rise, and the resistance of the battery core can be increased after the temperature of the battery core rises, so that the waste of power can be caused.
Disclosure of Invention
An object of the utility model is to provide a temperature resistant type high tension cable, through installing heat conduction silicone grease insulation board additional in heat conduction silicone grease insulating layer inboard, make high tension cable have better heat-sinking capability, the temperature of metal electricity core has been reduced to a certain extent, and then the resistance of metal electricity core has been reduced, and then the loss of electric power has been reduced, install the cooling flame retardant coating additional in proper order through the outside at heat conduction silicone grease insulating layer, interior fire-resistant heat insulation layer, heat-insulating armor fire blocking layer and fire-retardant oversheath of cooling, make high tension cable have better fire-proof capability, strive for more rescue time when taking place the condition of a fire for high tension cable, the problem that exists among the above-mentioned prior art has been solved.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
a temperature-resistant high-voltage cable comprises a plurality of high-voltage battery cells and a plurality of heat-conducting silicone grease insulation plates, wherein one sides of the heat-conducting silicone grease insulation plates are fixedly connected with each other, a connecting point is positioned in the center of the cross section of the cable, and the high-voltage battery cells are positioned in an included angle between two adjacent heat-conducting silicone grease insulation plates;
high-voltage electricity core includes metal electric core, there is the inner cladding in week side cladding behind many metal electric core transposition, the week side wraparound of inner cladding has fire-resistant insulation layer and surrounding layer, all side claddings of high-voltage electricity core and heat conduction silicone grease insulation board have heat conduction silicone grease insulation layer, the inboard at heat conduction silicone grease insulation layer is hugged closely to one side of heat conduction silicone grease insulation board, it has the fire-retardant filler rope of steamed nothing to fill between high-voltage electricity core and the heat conduction silicone grease insulation layer, all side claddings of heat conduction silicone grease insulation layer have the cooling flame retardant coating, all side claddings of at the cooling flame retardant coating have interior fire-resistant insulation layer, all side claddings of including fire-resistant insulation layer have the thermal-insulated armor of cooling and keep off the fire layer, all side claddings of the thermal-retardant oversheath in the thermal-insulated armor of cooling.
Optionally, the metal battery core is made of metal copper.
Optionally, the temperature-reducing fireproof layer is filled with a first inorganic compound, and the critical temperature range of the first inorganic compound for decomposing, releasing water and reducing the temperature is 150 ℃ to 250 ℃.
Optionally, the cooling fireproof layer is an aluminum hydroxide inorganic compound layer.
Optionally, the temperature-reducing heat-insulating armor fire barrier layer is filled with a second inorganic compound, and the critical temperature range of decomposition, water release and temperature reduction of the second inorganic compound is 300 ℃ to 400 ℃.
Optionally, the flame-retardant outer sheath is of an extruded structure made of polyolefin materials.
The embodiment of the utility model has the following beneficial effect:
the utility model discloses an embodiment is through installing heat conduction silicone grease insulation board additional in heat conduction silicone grease insulating layer inboard, make high tension cable have better heat-sinking capability, the temperature of metal electricity core has been reduced to a certain extent, and then the resistance of metal electricity core has been reduced, and then the loss of electric power has been reduced, install the cooling flame retardant coating additional in proper order through the outside at heat conduction silicone grease insulating layer, interior fire-resistant heat insulation layer, heat-insulating armor fire-blocking layer of cooling and fire-retardant oversheath, make high tension cable have better fire behavior, strive for more rescue time when taking place the condition of a fire for high tension cable.
Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic cross-sectional structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic diagram of a high voltage electrical core structure according to an embodiment of the present invention.
Wherein the figures include the following reference numerals:
high-voltage electric core 1, metal electric core 101, inner cladding 102, fire-resistant insulating layer 103, surrounding layer 104, heat conduction silicone grease insulation board 2, heat conduction silicone grease insulating layer 3, the fire-retardant filler rope 4 of halogen-free, cooling flame retardant coating 5, interior fire-resistant heat insulation layer 6, cooling thermal-insulated armor fire blocking layer 7, fire-retardant oversheath 8.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
Referring to fig. 1-3, in the present embodiment, a temperature-resistant high-voltage cable is provided, including: the high-voltage battery comprises a plurality of high-voltage battery cores 1 and a plurality of heat-conducting silicone grease insulation plates 2, wherein one sides of the heat-conducting silicone grease insulation plates 2 are fixedly connected with each other, a connecting point is positioned in the center of the cross section of a cable, and the high-voltage battery cores 1 are positioned in an included angle between two adjacent heat-conducting silicone grease insulation plates 2;
high-voltage electric core 1 includes metal electric core 101, many metal electric core 101 transposition back have inner cladding 102 in week side cladding, the week side wraparound of inner cladding 102 has fire-resistant insulation layer 103 and surrounding layer 104, high-voltage electric core 1 and 2 week side claddings of heat conduction silicone grease insulation board have heat conduction silicone grease insulation layer 3, one side of heat conduction silicone grease insulation board 2 is hugged closely in the inboard of heat conduction silicone grease insulation layer 3, it has halogen-free fire-retardant filling rope 4 to fill between high-voltage electric core 1 and the heat conduction silicone grease insulation layer 3, 3 week side claddings of heat conduction silicone grease insulation layer have cooling flame retardant coating 5, week side at cooling flame retardant coating 5 has interior fire-resistant insulation layer 6 around the package, week side cladding of including fire-resistant insulation layer 6 has heat insulation armor fender fire layer 7, week side cladding at heat insulation armor fire-retardant oversheath 8 of cooling.
The application of one aspect of the embodiment is as follows: when the device is used, because the heat-conducting silicone grease has good heat-conducting property and is an insulating material, the heat conductive silicone grease insulation plate 2 can conduct heat generated from the metal cell 101 to the outside, further reducing the temperature of the metal electric core 101 and greatly reducing the voltage breakdown between the electric cores due to the insulating property of the heat-conducting silicone grease insulating board 2, the heat-conducting silicone grease insulating board 2 can conduct the heat to the heat-conducting silicone grease insulating layer 3, the heat is shared by the heat-conducting silicone grease insulating layer 3 and conducted to the outside, the cooling fireproof layer 5, the inner fireproof heat-insulating layer 6, the cooling heat-insulating armor fire barrier layer 7 and the flame-retardant outer sheath 8 have good fireproof and heat-insulating effects, a large amount of rescue time can be strived for the rescue when the conflagration breaks out to cooling thermal-insulated armor keeps off fire layer 7 and fire-retardant oversheath 8 can the significantly reduced cable by external mechanical strength damage.
Through installing heat conduction silicone grease insulation board 2 additional in heat conduction silicone grease insulating layer 3 inboards, make high tension cable have better heat-sinking capability, the temperature of metal electricity core 101 has been reduced to a certain extent, and then the resistance of metal electricity core 101 has been reduced, and then the loss of electric power has been reduced, install cooling flame retardant coating 5 additional in proper order through the outside at heat conduction silicone grease insulating layer 3, interior fire-resistant heat insulation layer 6, heat-insulating armor fire-blocking layer 7 of cooling and fire-retardant oversheath 8, make high tension cable have better fire-proof capability, strive for more rescue time when taking place the condition of a fire for high tension cable.
The metal battery cell 101 of this embodiment is made of copper.
The cooling and fire-proof layer 5 of the present embodiment is filled with a first inorganic compound, and the critical temperature range of the first inorganic compound for decomposing, releasing water and cooling is 150 ℃ to 250 ℃.
The cooling fireproof layer 5 of this embodiment is an aluminum hydroxide inorganic compound layer.
The temperature-reducing heat-insulating armor fire barrier layer 7 of the present embodiment is filled with a second inorganic compound, and the critical temperature range of decomposition, water release and temperature reduction of the second inorganic compound is 300 ℃ to 400 ℃.
The flame-retardant outer sheath 8 of the embodiment adopts an extruded structure made of polyolefin materials.
A preparation process of a temperature-resistant high-voltage cable comprises the following steps:
s01, a single high-voltage battery cell 1 is manufactured, a metal battery cell 101 is arranged inside the high-voltage battery cell 1, and an inner cladding 102, a fire-resistant insulating layer 103 and an outer cladding 104 are coated on the periphery of the metal battery cell 101 from inside to outside;
s02, placing a plurality of high-voltage battery cells 1 in an included angle formed by a heat-conducting silicone grease insulation board 2, then filling a halogen-free flame-retardant filling rope 4 in a gap formed by the high-voltage battery cells 2 and the heat-conducting silicone grease insulation board 2, and simultaneously wrapping a heat-conducting silicone grease insulation layer 6 on the peripheral side of the high-voltage battery cells 1 and the heat-conducting silicone grease insulation board 2;
s03, coating an aluminum hydroxide inorganic compound on the peripheral side of the heat-conducting silicone grease insulating layer 6 by adopting an extrusion process to form a cooling fireproof layer 5;
s04, wrapping an inorganic flame-retardant tape around the cooling fireproof layer 5 by adopting a wrapping process to form an inner fireproof heat-insulating layer 6;
s05, interlocking armor is firstly made, then extrusion and filling are adopted, interlocking armor is carried out outside the inner fire-resistant heat-insulating layer 6, and the inner fire-resistant heat-insulating layer 6 and the interlocking armor are filled with a magnesium hydroxide inorganic compound to form a cooling heat-insulating armor fire-blocking layer 7;
s06, extruding and forming the flame-retardant outer sheath 8 outside the temperature-reducing heat-insulating armored fire-blocking layer 7 by adopting an extrusion forming process.
In S01 of the present embodiment, the following steps are respectively included:
firstly, preparing a formed metal battery cell 1;
and secondly, sequentially forming an inner cladding 102, a refractory insulating layer 103 and an outer cladding 104 of the metal electric core 101 from inside to outside on the peripheral side of the metal electric core 101 by using a three-layer co-extrusion process.
The inner cladding 102 of this embodiment comprises the following raw materials in parts by weight: 50-65 parts of methyl vinyl silicone rubber, 23-38 parts of hydrogenated styrene, 10-17 parts of terpene resin, 6-15 parts of polyvinylidene chloride, 4-10 parts of 3-hexyl substituted polythiophene, 2-6 parts of chlorinated polyethylene, 3-8 parts of nickel oxide, 0.6-4 parts of praseodymium oxide, 1.2-3 parts of carbon quantum dots, 2-5 parts of fumed silica, 2-5 parts of diethanethiol, 1-6 parts of asphalt-based carbon fiber, 3-7 parts of itaconic acid, 4-9 parts of calcium ricinoleate, 3-9 parts of gamma-mercaptopropyltriethoxysilane, 2-6 parts of triallyl isocyanurate, 1-4 parts of ethylene-octene copolymer, 3-8 parts of benzoin dimethyl ether, 2-7 parts of calcium hydroxide, 3-6 parts of trioctyl trimellitate, 0.2-1.5 parts of lead tetraoxide. The inner cladding 102 made of the above materials has excellent temperature-resistant insulating performance, and can reduce the situations that the inner cladding 102 is melted and the cable is broken down.
The outer cladding 104 of this embodiment comprises the following raw materials in parts by weight: 20-25 parts of ethylene propylene diene monomer, 10-18 parts of antioxidant, 15-25 parts of high-pressure polyethylene, 10-15 parts of nano-alumina, 2-8 parts of polyethylene, 10-15 parts of polyvinyl chloride, 5-8 parts of silicon, 8-10 parts of white carbon black, 4-10 parts of chlorinated paraffin and 15-18 parts of thickener. The outer covering 104 made of the above materials has good flexibility and ductility, and can reduce the abrasion of the cable and reduce the fracture of the outer covering 104 caused by the bending of the cable.
The above embodiments may be combined with each other.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Claims (6)
1. A temperature-resistant high-voltage cable, comprising: the high-voltage battery comprises a plurality of high-voltage battery cells (1) and a plurality of heat-conducting silicone grease insulation plates (2), wherein one sides of the heat-conducting silicone grease insulation plates (2) are fixedly connected with each other, a connection point is positioned in the center of the cross section of a cable, and the high-voltage battery cells (1) are positioned in an included angle between two adjacent heat-conducting silicone grease insulation plates (2);
the high-voltage battery cell (1) comprises metal battery cells (101), an inner cladding (102) is wrapped on the periphery of the stranded metal battery cells (101), a fire-resistant insulating layer (103) and an outer cladding (104) are wrapped on the periphery of the inner cladding (102), a heat-conducting silicone grease insulating layer (3) is wrapped on the periphery of the high-voltage battery cell (1) and the heat-conducting silicone grease insulating plate (2), one side of the heat-conducting silicone grease insulating plate (2) is tightly attached to the inner side of the heat-conducting silicone grease insulating layer (3), a halogen-free flame-retardant filling rope (4) is filled between the high-voltage battery cell (1) and the heat-conducting silicone grease insulating layer (3), a cooling fireproof layer (5) is wrapped on the periphery of the heat-conducting silicone grease insulating layer (3), an inner fireproof heat insulating layer (6) is wound around the periphery of the cooling fireproof layer (5), a temperature-reducing heat-insulating armor fire-blocking layer (7) is coated on the periphery of the inner fire-resistant heat-insulating layer (6), the fire-retardant outer sheath (8) is coated on the periphery of the temperature-reducing heat-insulating armor fire-blocking layer (7).
2. A temperature-resistant high-voltage cable according to claim 1, wherein the metal core (101) is made of copper.
3. A temperature-resistant high-voltage cable according to claim 1, wherein the temperature-reducing flame-retardant layer (5) is filled with a first inorganic compound.
4. A temperature-resistant high-voltage cable according to claim 3, wherein the temperature-reducing fire-retardant layer (5) is an aluminum hydroxide inorganic compound layer.
5. A temperature-resistant high-voltage cable according to claim 1, wherein the temperature-reducing and heat-insulating armor fire-blocking layer (7) is filled with a second inorganic compound.
6. A temperature-resistant high-voltage cable according to claim 1, wherein the flame-retardant outer sheath (8) is of extruded polyolefin material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120534613.9U CN214541660U (en) | 2021-03-15 | 2021-03-15 | Temperature-resistant high-voltage cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120534613.9U CN214541660U (en) | 2021-03-15 | 2021-03-15 | Temperature-resistant high-voltage cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214541660U true CN214541660U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120534613.9U Active CN214541660U (en) | 2021-03-15 | 2021-03-15 | Temperature-resistant high-voltage cable |
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| Country | Link |
|---|---|
| CN (1) | CN214541660U (en) |
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2021
- 2021-03-15 CN CN202120534613.9U patent/CN214541660U/en active Active
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