CN-224233323-U - Ceramic insulating support and power cable connecting device

Abstract

The utility model relates to a ceramic insulation support and a power cable connecting device, wherein the ceramic insulation support comprises a first ceramic insulation module and a second ceramic insulation module, the first ceramic insulation module is provided with a plurality of containing grooves for containing cable wiring terminals, the second ceramic insulation module is provided with a plurality of containing grooves for containing the cable wiring terminals, the first ceramic insulation module is connected with the second ceramic insulation module, and the containing grooves of the first ceramic insulation module are communicated with the containing grooves of the second ceramic insulation module to form a containing cavity for containing the cable wiring terminals. The long-term temperature resistance of the ceramic matrix material can reach more than 2000 ℃, the far superplastic (about 120-200 ℃) keeps the structural integrity, does not soften or decompose in a cable flame combustion (950-1000 ℃ and 3 h) test, ensures that reliable insulation and mechanical support can be maintained under extremely high temperature or fire environment, and greatly improves the power supply safety of a power supply system.

Inventors

• LIU GUOLEI

Assignees

• 广东优卡电气科技有限公司

Dates

Publication Date

20260512

Application Date

20250604

Priority Date

20250515

Claims (10)

1. 1. The ceramic insulation support comprises a first ceramic insulation module and a second ceramic insulation module, and is characterized in that the first ceramic insulation module is provided with a plurality of containing grooves for containing cable wiring terminals, and the second ceramic insulation module is provided with a plurality of containing grooves for containing the cable wiring terminals; The first ceramic insulation module is connected with the second ceramic insulation module, and the accommodating groove of the first ceramic insulation module is communicated with the accommodating groove of the second ceramic insulation module to form an accommodating cavity for accommodating the cable wiring terminal.
2. 2. The ceramic insulating support according to claim 1, wherein the first ceramic insulating module is provided with a clamping rib and a clamping groove, the second ceramic insulating module is provided with a clamping rib and a clamping groove, the clamping rib of the first ceramic insulating module is inserted into the clamping groove of the second ceramic insulating module, and the clamping rib of the second ceramic insulating module is inserted into the clamping groove of the first ceramic insulating module, so that the first ceramic insulating module and the second ceramic insulating module are integrally connected.
3. 3. The ceramic insulating support according to claim 2, wherein the clamping ribs are arranged on the periphery of the accommodating groove of the corresponding portion of the first ceramic insulating module, the clamping grooves are arranged on the periphery of the accommodating groove of the corresponding portion of the first ceramic insulating module, the clamping ribs are arranged on the periphery of the accommodating groove of the corresponding portion of the second ceramic insulating module, and the clamping grooves are arranged on the periphery of the accommodating groove of the corresponding portion of the second ceramic insulating module.
4. 4. The ceramic insulating support according to claim 1, wherein the accommodating groove is provided with a blocking rib for preventing loosening of the cable connection terminal.
5. 5. The ceramic insulating support according to claim 4, wherein the rib is arranged at one side opening of the accommodating groove, an opening for communicating with an accommodating groove of another ceramic insulating module is arranged at the other side opening of the accommodating groove, and the rib is arranged at the top of the accommodating groove.
6. 6. The ceramic insulating support according to claim 1, wherein the first ceramic insulating module is provided with 5 accommodating grooves, and the second ceramic insulating module is provided with 5 accommodating grooves.
7. 7. The ceramic insulating support according to claim 1, further comprising a bolt and a nut, wherein the first ceramic insulating module and the second ceramic insulating module are respectively provided with a through hole which is convenient for the bolt to pass through, and the bolt sequentially passes through the through hole of the first ceramic insulating module and the through hole connecting nut of the second ceramic insulating module to realize the locking of the first ceramic insulating module and the second ceramic insulating module.
8. 8. A power cable connecting device adopting the ceramic insulating support according to any one of claims 1-7, which is characterized by comprising a cable connecting terminal and a high-temperature-resistant shell, wherein the cable connecting terminal is clamped in a containing cavity of the ceramic insulating support, the ceramic insulating support is arranged in the high-temperature-resistant shell, and the high-temperature-resistant shell is provided with a main cable inlet and a branch cable outlet.
9. 9. The power cable connection device according to claim 8, wherein the high temperature resistant housing comprises an upper housing and a lower housing, the upper housing is a metal upper housing, the lower housing is a metal lower housing, and the upper housing and the lower housing are connected to form the high temperature resistant housing.
10. 10. The power cable connection device according to claim 8, wherein the cable connection terminal comprises a base integrally formed by high-strength conductive metal material which is not easy to deform under stress, a conductive metal slide plate and a wire pressing metal plate which are made of the high-conductivity metal material; The base is provided with a cable core accommodating channel, and is provided with an opening communicated with the cable core accommodating channel; The conductive metal sliding plate is provided with an upper arc-shaped opening and a lower arc-shaped opening, the conductive metal sliding plate is movably arranged in the cable core accommodating channel, and a lower clamping cavity for clamping the cable core is formed between the lower arc-shaped opening and the bottom wall of the cable core accommodating channel; The wire pressing metal plate is provided with a wire pressing part with adjustable height, the wire pressing metal plate is arranged on the base in a detachable mode to seal the opening, the wire pressing part faces the upper arc-shaped opening, and an upper clamping cavity for clamping the cable core is formed between the wire pressing part and the upper arc-shaped opening in a surrounding mode.

Description

Ceramic insulating support and power cable connecting device Technical Field The utility model relates to a ceramic insulating bracket and a power cable connecting device. Background Along with the continuous expansion of the scale of the power system and the continuous improvement of the cable laying density, the power cable connecting device is used as a key node for electric energy transmission between the main cable and the branch cable, and the safety and the reliability of the power cable connecting device are directly related to the stable operation of the whole power equipment and the safety of personnel and property. However, the power cable connection device in the prior art has the following disadvantages: The insulation support and the shell of the existing power cable connecting device are made of engineering plastics or glass fiber reinforced plastics, and can only meet the electrical insulation requirement of normal power supply at normal temperature, but cannot meet the power supply requirement of fire fighting fire, or the thermal deformation temperature is usually 120-200 ℃ under the condition of local overload heating, and is far lower than the fire-resistant standard of 3 h power supply at the temperature of 950-1 000 ℃ in the fire fighting fire. Once the bracket or the shell is softened or burnt, insulation failure is extremely easy to cause interphase short circuit and grounding fault, and even electric fire accidents are caused. Disclosure of utility model The first object of the utility model is to provide a ceramic insulating support which can meet the electrical insulation requirement and has excellent high temperature resistance. A second object of the present utility model is to provide a power cable connection device that satisfies electrical insulation requirements and has excellent high temperature resistance. The first object of the present utility model is achieved by: The ceramic insulation support comprises a first ceramic insulation module and a second ceramic insulation module, wherein the first ceramic insulation module is provided with a plurality of accommodating grooves for accommodating cable wiring terminals, and the second ceramic insulation module is provided with a plurality of accommodating grooves for accommodating the cable wiring terminals; The first ceramic insulation module is connected with the second ceramic insulation module, and the accommodating groove of the first ceramic insulation module is communicated with the accommodating groove of the second ceramic insulation module to form an accommodating cavity for accommodating the cable wiring terminal. The long-term temperature resistance of the ceramic matrix material can reach more than 2000 ℃, the far superplastic (about 120-200 ℃) keeps the structural integrity, does not soften or decompose in a cable flame combustion (950-1000 ℃ and 3 h) test, ensures that reliable insulation and mechanical support can be maintained under extremely high temperature or fire environment, and greatly improves the power supply safety of a power supply system. The ceramic material has high inherent dielectric strength, large volume resistivity, no halogen, no carbonization product, no conductive channel even in high temperature or humid environment, stable insulation between the cable terminals and the shell, and reduced electrical insulation breakdown and electrical short circuit risks. The first ceramic insulating module and the second ceramic insulating module are identical in structure, are mirror images or identical in type and are produced by the same set of die, so that the die cost is reduced, the structure is identical, and the installation is simple. When the ceramic insulating support is produced and installed, the first ceramic insulating module and the second ceramic insulating module are connected to form the ceramic insulating support, so that labor cost and error rate are reduced. Under multiple severe working conditions such as high temperature, fire and humidity, the mechanical strength and the insulation performance can still be maintained, hidden dangers such as inflammability, thermal deformation, aging cracking and the like of the plastic bracket are eliminated, and the electrical fault and fire risk are reduced from the source. The first object of the utility model can also be solved by the following technical measures: Further, the first ceramic insulation module is provided with a clamping rib and a clamping groove, the second ceramic insulation module is provided with a clamping rib and a clamping groove, the clamping rib of the first ceramic insulation module is inserted into the clamping groove of the second ceramic insulation module, and the clamping rib of the second ceramic insulation module is inserted into the clamping groove of the first ceramic insulation module, so that the first ceramic insulation module and the second ceramic insulation module are integrally connected. During instal