Fire detection system amplifier cabinet

Abstract

The invention discloses a fire detection system amplifier cabinet. Three layers of back plate clamps in an original coal fire detector amplifier cabinet are rearranged, and three layers of fire detector amplifier clamps are arranged into a coal pulverizer first corner fire detector, a coal pulverizer second corner fire detector and a coal pulverizer third corner fire detector which each comprise six coal fire detector amplifier clamps; and an AB oil fire detector, a CD oil fire detector and an EF oil fire detector in an oil fire detector amplifier cabinet are not changed, a fire detector back plate is added into the oil fire detector amplifier cabinet, and a coal pulverizer fourth corner fire detector is arranged on the newly added fire detector back plate. The fire detection system amplifier cabinet has the advantages that an amplifier clamp frame is added into the original oil fire detector amplifier cabinet, the fire detectors of six coal pulverizers are completely independent, the six coal pulverizers only lose the fire detector at one corner if any one clamp frame is de-energized, pulverizer shutdown cannot be caused, and the influence of fire detection system faults on the operation safety of a boiler is reduced.

Description

technical field [0001] The invention relates to an amplifier cabinet of a flame detection system. Background technique [0002] The boiler flame detection system amplifier cabinet in our factory is divided into two groups, one group is the coal fire detection amplifier cabinet, which is equipped with a coal fire detection dual-circuit power supply and 6 sets of 24 sets of coal fire detection amplifier cards; the other group is the oil fire detection amplifier cabinet Amplifier cabinet, with oil fire detection dual-circuit power supply and 3 layers of 12 groups of oil fire detection amplifier cards, all coal fire detection cards are concentrated in one amplifier cabinet, and every two mills use an amplifier power distribution base plate, six sets The flame detector of the coal mill shares two independent power sources. [0003] In the protection logic of the coal mill in our factory, the loss of the mill fire detection four take three trips, due to the above design of the fi...

AI Technical Summary

Problems solved by technology

One of the four sub-power supplies is faulty. Although the sub-power supply of the other group will automatically cut in, because the system does not monitor all the sub-power supplies, the fault of one sub-power supply cannot be found in daily maintenance, and the fire detection is still running normally. Until the two-way power supply fails, it will cause the eight amplifiers of the card rack to lose power, resulting in a power failure of the amplifier, and all eight fire detectors output no fire signal, causing the two coal mills to trip, and the power supply of the crude oil flame detector amplifier cabinet Arrange only R1, R2 card frame power branch

If there is a problem with the common power supply system of each layer of flame inspection cards, it is very easy to cause unstable combustion of the boiler and cause the unit to trip

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