Power supply device for underground Ethernet

Abstract

The invention relates to a power supply device, in particular to a power supply device for an underground Ethernet, which comprises an anti-explosion switch and a network terminal. The anti-explosion switch and the network terminal are connected through a signal transmission wire. The anti-explosion switch comprises an intrinsic safe power, a network switch and a power source / data interface connected to the intrinsic safe power and the network switch. The network terminal comprises a second power source / data interface connected to a network device and a network isolation device which comprises a first network isolator connected to the network switch and arranged in the anti-explosion switch and a second network isolator connected to the network device and arranged in the network terminal, wherein the first network isolator filters and amplifies a signal output by the network switch and the second network isolator filters and amplifies a signal input to the network device. The invention simplifies the system structure, promotes the safety factor of power supply for the underground Ethernet, greatly reduces underground site wiring and simplifies the maintenance.

Description

technical field [0001] The invention relates to power supply equipment, in particular to a downhole Ethernet power supply equipment. Background technique [0002] More than 95% of my country's coal mines are mined underground. Poor coal storage conditions, deep mining depth, gas, coal dust, floods, fires, rock bursts, and geothermal heat have plagued the healthy development of the coal industry. The coal industry has always been one of my country's industrial and mining enterprises. high-risk industries. With the development of industrial Ethernet, more and more network devices are applied to the field of industrial control, and the number of network terminals gradually increases. The power supply of the equipment has gradually attracted people's attention, especially in coal mines. It is even more difficult, if the power input into the downhole is not intrinsically safe, it will pose a threat to the safety of the downhole. The existing underground network power supply and ...

AI Technical Summary

Problems solved by technology

With the development of industrial Ethernet, more and more network devices are applied to the field of industrial control, and the number of network terminals gradually increases. The power supply of the equipment has gradually attracted people's attention, especially in coal mines. It is even more difficult. If the power input into the downhole is not intrinsically safe, it will pose a threat to the safety of the downhole.

The existing underground network power supply and network signal are transmitted to the network terminal separately, so the wiring of the system is complicated, it is inconvenient to maintain, and it also increases the risk factor of underground work

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