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A lightning protection device and dual-flow technology, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc. Insufficient and other problems, to achieve the effect of fast charge and discharge, high breakdown field, and low voltage threshold
Pending Publication Date: 2022-06-21
扬州华铁机电集团有限公司
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[0004] Although the performance of the lightning protection and grounding device mentioned above is better, it is found that its energy conversion ef
Method used
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[0054] Example 1
[0055] The preparation method of the lightning protection device comprises the following steps:
[0056] (1) Preparation of conductive medium
[0057] In terms of mass percentage, the conductive medium includes the following components: 12% of zinc oxide-graphene composite material, 36% of manganese oxide, 24% of graphite, 10% of sodium dioxide, and 18% of carbon nanoparticles.
[0058] (2) Preparation of negative electrode materials
[0059] S1. Add 0.25 g of acetylene black to 20 mL of 3M nitric acid solution, stir and soak for 3 hours; filter and dry the solution containing acetylene black;
[0060] S2, dissolve 10g ferric nitrate nonahydrate in 20mL aqueous solution, and mix with the acetylene black obtained in step S1;
[0061] S3, after 3h ball milling method is adopted for the ferric nitrate / acetylene black mixture, freeze-drying;
[0062] S4. Place the dried mixture in a tube furnace, heat treatment at 500°C (heating rate of 5°C / min) for 3h in a ...
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[0074] Example 2
[0075] Others are the same as in Example 1. In terms of mass percentage, the conductive medium includes the following components: 12% of zinc oxide-graphene composite material, 18% of manganese oxide, 42% of graphite, 10% of sodium dioxide, and 18% of carbon nanoparticles.
Example Embodiment
[0076] Example 3
[0077] Others are the same as in Example 1. In terms of mass percentage, the conductive medium includes the following components: 26% of zinc oxide-graphene composite material, 24% of manganese oxide, 24% of graphite, 6% of sodium dioxide, and 20% of carbon nanoparticles.
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Abstract
The invention discloses a double-flow-direction lightning protection device which sequentially comprises a shell (1), a negative electrode film (4), a conductive medium layer (3), a positive electrode film (5) and an inner core (2) from outside to inside, the negative electrode film (4) is prepared on the inner wall of the shell (1), the positive electrode film (5) is prepared on the outer wall of the inner core (2), the negative electrode film (4) is a nano-iron negative electrode film, and the conductive medium layer (3) is a nano-iron negative electrode film. And the positive electrode film (5) is a nano-nickel positive electrode film. A special structure is utilized, the conductive medium layer has the characteristics of wide band gap, high breakdown field, high heat conductivity, electron saturation rate and the like, a charging and discharging voltage clamping technology of an iron-nickel battery system is utilized, and a current zero-crossing automatic cut-off discharging circuit exists in a circuit by utilizing the opposite characteristics of charging and discharging currents, so that rapid charging and discharging can be realized; and the voltage is prevented from exceeding the allowable bearing range of the electric equipment due to over-high voltage, so that the possibility that the equipment is damaged by reverse current is prevented from being blocked.
Description
technical field [0001] The invention relates to the technical field of lightning protection in many industries such as national defense engineering, rail transit, airport, petroleum, chemical industry, mining, electric power, construction, communication signal, radio and television, meteorology, etc. In particular, it relates to a dual-flow lightning protection device. Background technique [0002] Lightning is generated in nature. When lightning discharge occurs, the lightning electromagnetic pulse caused by it has the characteristics of large current and overvoltage; it has a great impact on station power supply, communication transmission and related signals and network equipment, causing huge The loss directly threatens people's normal production safety. [0003] The Chinese Patent Application Publication No. CN 104966912 A discloses a variable energy combined lightning protection grounding device. The variable energy combined lightning protection grounding device is co...
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