Manufacturing method of full-closed arrester

A production method and a closed technology, applied in the direction of resistors, resistance manufacturing, electrical components, etc., can solve the problems of electrical performance that cannot meet the design requirements, short creepage distance, poor sealing, etc., and achieve insulation performance degradation and creepage distance. Increase and solve the effect of high requirements

Inactive Publication Date: 2013-04-24
ZHENJIANG JUNENG ELECTRICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the silicone rubber used on the high-temperature cable is cured, while the silicone rubber used in the arrester body is uncured, and the two are difficult to integrate. In some existing technologies, high-temperature cables and silicone rubber are used for secondary sealing. However, the sealing performance is poor, the creepage distance is short, and the electrical performance cannot meet the design requirements.

Method used

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  • Manufacturing method of full-closed arrester
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In the present embodiment, the core body is a zinc oxide core body of a high-energy resistance sheet, such as figure 1 As shown, it includes a high-temperature cable 1, a silicone rubber jacket 2, a core 3 and a lower electrode 4, wherein: the high-temperature cable 1 is set on the top of the core 3, the lower electrode 4 is set on the bottom of the core 3, and the silicone rubber The jacket 2 covers the core 3 and the high-temperature cable 1, the high-temperature cable 1 serves as the upper electrode of the core 3, and the lower electrode 4 is fixed on the switch cabinet by bolts.

[0023] (1) Put the core body 3 into an oven to preheat at 100°C for 2 hours;

[0024] (2) Weld the high-temperature cable 1 to the top of the preheated core 3, and then put the core 3 into a mold filled with silicone rubber melt, so that the silicone rubber will connect the core 3 and the core 3 to the high temperature. The cable 1 connection is completely covered and molded according to ...

Embodiment 2

[0033] The product that present embodiment makes is the lightning rod of 24KV, and present embodiment comprises the following steps:

[0034] (1) Put the core body 3 into an oven to preheat at 120°C for 2 hours;

[0035] (2) Weld the high-temperature cable 1 to the top of the preheated core 3, and then put the core 3 into a mold filled with silicone rubber melt, so that the silicone rubber will connect the core 3 and the core 3 to the high temperature. The connection of the cable 1 is completely covered, and molded according to the process: the mold of this embodiment includes a mold cavity 5, an upper positioning pin 6, a lower positioning pin 7, a limiting block 8 and a positioning block 9; wherein: the upper positioning pin 6 and The lower positioning pin 7 is arranged on the top of the mold cavity 5, the limit block 8 is arranged on the bottom of the mold cavity 5, the positioning block 9 is connected with the limit block 8, and the temperature control device 10 is arrange...

Embodiment 3

[0044] The product that present embodiment makes is the lightning rod of 35KV, and present embodiment comprises the following steps:

[0045] (1) Put the core body 3 into an oven to preheat at 150°C for 2 hours;

[0046] (2) Weld the high-temperature cable 1 to the top of the preheated core 3, and then put the core 3 into a mold filled with silicone rubber melt, so that the silicone rubber will connect the core 3 and the core 3 to the high temperature. The connection of the cable 1 is completely covered, and molded according to the process: the mold of this embodiment includes a mold cavity 5, an upper positioning pin 6, a lower positioning pin 7, a limiting block 8 and a positioning block 9; wherein: the upper positioning pin 6 and The lower positioning pin 7 is arranged on the top of the mold cavity 5, the limit block 8 is arranged on the bottom of the mold cavity 5, the positioning block 9 is connected with the limit block 8, and the temperature control device 10 is arrange...

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Abstract

The invention discloses a manufacturing method of a full-closed arrester. The method comprises the following steps: taking a core into an oven and preheating at 100-150 DEG C for 1-3 hours; welding a high-temperature wire cable on the top of the preheated core, then taking the core into a mould filled with silicon rubber melt, and ensuring the core and the joint of the core and the high-temperature wire cable through silicon rubber to be completely covered; when the mould temperature is 170-200 DEG C and the pressure is 3-5 MPa, carrying out compression molding on the core with the high-temperature wire cable; performing pressure maintaining, solidifying and demoulding; and taking the demoulded product into the oven for vulcanization. The manufacturing method provided by the invention hasthe advantages that the height of the manufactured arrester is reduced by at least 30% compared with the prior art, and the effective creepage distance exceeds more than 50% of the normalized value; and the length of the high-temperature wire cable can be selected according to needs, and the requirements of the volume of the arrester on the height of a switch cubicle cable chamber can be solved.

Description

technical field [0001] The invention relates to a manufacturing method of a lightning arrester, in particular to a manufacturing method of a fully enclosed lightning arrester. Background technique [0002] Surge arrester is a device that can absorb overvoltage energy and limit the magnitude of overvoltage. When the overvoltage occurs, the voltage between the two terminals of the arrester does not exceed the specified value, so that the electrical equipment is protected from overvoltage damage; after the overvoltage acts, the system can quickly return to normal state. [0003] At present, the top and bottom ends of the arrester in the 10KV to 35KV system are connected to the switchgear by bolts. In order to meet the design requirements, the volume is often large, the insulation margin is small, and the space requirements for the cable room of the switch cabinet are relatively high. [0004] In addition, the silicone rubber used on the high-temperature cable is cured, while ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01C17/00
Inventor 张贝希
Owner ZHENJIANG JUNENG ELECTRICAL
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