The system structure of fly ash system is divided into three main systems: fly ash transportation, fly ash collection and discharge: fly ash conveying system is divided into air compressor system, electric dust ash bucket fluidization system, pneumatic ash conveying pipeline system, acceptable The four sets of pipelines of the main control command select the switching valve; the fly ash collection system includes six sections of the economizer, the air preheater, and the electric dedusting area, and a total of 48 ash ash tank pumps and three fly ash storage ash silos that can be used separately. The ash storage instrument air compressor system, the ash storage fluidization system, the bag dust removal control system; the fly ash discharge system is divided into a discharge fluidization system, a fly ash discharge ventilation system and a discharge flow control system. It adopts high positive pressure single pipeline and branch ash conveying mode, with flexible optional ash conveying and silo pump off-line mode, and each branch ash ash pump pumping material cap valve control, which can carry out whole row and single warehouse pump Ashes work. The reasonable selection of continuous and intermittent control mode of the whole system not only ensures the reliable ash conveying from the start of the unit to the continuous operation of full load, but also enables the control system to have selective work and pause, ensuring the reasonable output of the fly ash system. And to avoid the system to do a lot of useless work under low load, improve the system work efficiency and extend the life of the system equipment. At the initial stage of the fly ash system commissioning, the equipment system and wiring principle were reviewed. The design wiring was found to be inconsistent with the actual equipment. After communicating with the foreign experts, the wiring was modified. After the system and principle are familiar, the whole system equipment and circuit inspection work and the charging and software recovery of the fly ash system and the initial adjustment of the system are carried out. During the system control function check process, it was found that the control functions of some systems did not match the function descriptions provided by the manufacturer. After analyzing and researching the corresponding equipment description and system working conditions, the fly ash system control software was modified. A buffer is a part of the buffers-and-chain coupling system used on the railway systems of many countries, among them most of those in Europe, for attaching railway vehicles to one another. Rail Buffer,Train Buffer Stop,Sliding Type Rail Buffer,Hydraulic Sliding Type Rail Buffer Shenyang Lubang Railway Maintenance Machinery Co.,Ltd. , https://www.srmfrailwayequip.com
Fitted at the ends of the vehicle frames, one at each corner, the buffers are projecting, shock-absorbing pads which, when vehicles are coupled, are brought into contact with those on the next vehicle. The draw chain used between each pair of vehicles includes a screw which is tightened after coupling to shorten the chain and keep the buffers pressed together. Such is known as a 'screw coupling'.