Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Lightning protection device, grounding electrode and lightning surge voltage reduction method

A technology of lightning protection device and grounding electrode, which is applied in the direction of emergency protection circuit device, circuit device, emergency protection circuit device, etc. for limiting overcurrent/overvoltage, and can solve the problem of residents or animals feeling dangerous by electric shock, touching voltage or stepping To avoid problems such as increased voltage, to achieve the effects of reducing lightning disasters, suppressing potential rise, and reducing grounding impedance

Active Publication Date: 2011-12-21
NIPPON STEEL CORP
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] If the potential rise of the ground electrode due to lightning surge current increases, the touch voltage or step voltage will increase, and there is a danger of electric shock to nearby residents or animals.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Lightning protection device, grounding electrode and lightning surge voltage reduction method
  • Lightning protection device, grounding electrode and lightning surge voltage reduction method
  • Lightning protection device, grounding electrode and lightning surge voltage reduction method

Examples

Experimental program
Comparison scheme
Effect test

no. 2 Embodiment approach

[0075] According to the second embodiment of the present invention, the lightning protection device 1 is attached to existing equipment such as the signal 40, so compared with the case where the lightning protection device 1 is separately provided, the necessary strength and supporting structure can be reduced. Design constraints, etc., make it easy to miniaturize and simplify, and it is possible to reduce the equipment cost and equipment space of the lightning protection device 1. The second embodiment of the present invention has the same effect as the first embodiment.

[0076] As the third embodiment of the present invention, such as Image 6 As shown, the present invention can also be applied to structural columns with lightning protection functions. Image 6 It is a vertical cross-sectional view of the structural pillar 60 according to the embodiment of the present invention. Figure 7 Yes Image 6 Enlarged section view of Y-Y direction.

[0077] Such as Image 6 As shown, th...

Embodiment

[0124] Generally, the main frequency component of the lightning surge current is regarded as 10KHz~1MHz. By applying a general transmission formula, the lightning protection device 1 and the ground electrode 101 involved in the embodiment of the present invention are estimated, thereby using the sine wave constant current method. Analysis to verify its effectiveness.

[0125] As mentioned above, the lightning protection device 1 and the ground electrode 101 are regarded as Figure 4 , 12 The shown equivalent circuit of the lossy line, therefore, below, the known general formula is used for estimation. Furthermore, in the equivalent circuit of the lossy line, when the resistance R and the conductance G are set to 0, it corresponds to the equivalent circuit of the lossless line.

[0126] Generally, such as Figure 18 As shown, the coaxial cable 95 with the outer diameter of the inner conductor 91 being a and the inner diameter of the outer conductor 91 being b, in the state where the...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A lightning protection device (1) for causing a lightning surge current caused by a lightning strike (7) to flow to the ground side is composed of: a steel pipe (3); a conductor (4) coaxially arranged in the steel pipe (3); Conductive filler (10) between (3) and conductor (4). Thus, the lightning surge current flowing through the lightning arrester (1) is shunted, and its low-frequency component flows through the conductor (4), and its high-frequency component flows through the steel pipe (3) and filler (10) outside the conductor (4). ).

Description

Technical field [0001] The present invention relates to a lightning protection device, a ground electrode, and a method for reducing lightning surge voltage that prevent lightning disasters by flowing a lightning surge current caused by a lightning strike to a ground side. Background technique [0002] When a high-output lightning surge current flows to buildings, signals and other equipment, or trees, etc., they will be destroyed. In recent years, electronic devices that cannot withstand electric shocks have also increased, and lightning disasters have become a very big threat. In order to prevent such lightning disasters, conductors (usually called lightning rods, including lightning rods or lightning conductors, etc.) are used to secure a path for the lightning surge current caused by lightning to flow to the ground side in advance. [0003] However, the lightning surge current contains alternating currents of various frequencies. When the lightning surge current caused by a li...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H05F3/04H02G13/00H02H9/06
Inventor 宫川隆中村光一堀部勋夫
Owner NIPPON STEEL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com