Rapid powder transferring device for adjacent furnace of power station boiler and using method thereof

Abstract

The invention discloses a rapid powder transferring device for an adjacent furnace of a power station boiler and a using method thereof, and belongs to the technical field of thermal power generation.The rapid powder transferring device comprises a first furnace powder bin, a second furnace powder bin and a pair of powder pumping branch pipes, and a plurality of lower powder outlet pipes which are uniformly distributed communicate between the first furnace powder bin as well as the second furnace powder bin and the pair of powder pumping branch pipes; arc-shaped through holes are formed in the right ends of the lower powder outlet pipes, movable sealing plates are inserted in the lower powder outlet pipes, and the movable sealing plates comprise plugging parts and sealing parts; the plugging parts and the sealing parts are integrally formed, the plugging parts are matched with the lower powder outlet pipes, the sealing parts are matched with the arc-shaped through holes, synchronous frames are arranged on the lower sides of the first furnace powder bin and the second furnace powder bin, and a pair of coaxial connecting rods are fixedly connected between the plurality of movable sealing plates and the inner walls of the synchronous frames; and thus, communication and blocking of the powder pumping branch pipes and the lower powder outlet pipes can be rapidly realized, the timefor mounting and dismounting a plugging blind plate is saved, and the powder transferring efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of thermal power generation, and more specifically, relates to a rapid powder transfer device for an adjacent furnace of a power plant boiler. Background technique [0002] When the boiler is out of operation due to an accident, outage for peak regulation, or shutdown for maintenance, there is still a large amount of pulverized coal accumulated in the pulverized coal bunker, ranging from dozens of tons to hundreds of tons. , due to the oxidation of air, heat is slowly emitted, and the heat dissipation conditions in the relatively closed pulverized coal bin are not good, and the released heat promotes the acceleration of oxidation. Coal powder has a large surface area and a particle diameter of 20-50 microns with good fluidity. When the concentration in the air reaches 0.3-0.6 kg / m3, the coal powder explosion will occur as soon as it encounters a spark. Related safety work The regulations stipulate that: whe...

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Problems solved by technology

[0003] Conventional methods of cleaning the pulverized coal accumulated in the pulverized coal bin of the intermediate storage type pulverization system are mostly manual pulverization, hydraulic transportation to the ash yard or mechanical transfer. Install a powder delivery pipeline from the 10M layer of the powder feeder working face to the 0M layer at the powder outlet pipe of the powder feeder in the warehouse to build a new coal powder delivery channel for the pulverized coal silo, and start the corresponding The powder feeding machine works, with the help of the height difference between the pulverized coal bin and the ground, under the action of gravity, the pulverized coal in the pulverized coal bunker is transported to the 0M layer ditch through the newly installed powder delivery pipeline, and then enters the ash under the gully flushing water System, discharged to the ash yard, or manual transfer of pulverized coal at the 0M layer, to complete a process of manual cleaning and discharging of pulverized coal bins, two powder feeding machines take turns to work, it takes about a week, the process of this method is cumbersome and labor-intensive The efficiency is low, it is extremely easy to cause environmental pollution, and the non-renewable resource raw coal is discarded and wasted, which increases the power consumption rate of the plant, the heating coal consumption and the water consumption per unit of product. More importantly, the safety is extremely poor. The Chinese patent publication number is CN204665327U Disclosed is "A Power Plant Boiler Adjacent Furnace Powder Transfer Device", which belongs to the technical field of thermal power generation. The power plant boiler adjacent furnace powder transfer device includes a first powder pumping mechanism connected to the bottom of the first furnace powder bin; The powder mechanism is connected with the first powder pumping mechanism; the powder conveying main pipe is provided with a manual contact door; one side of the manual contact door is connected with the first powder pumping mechanism, and one end of the powder conveying main pipe is connected with The first fine powder separator is connected, and the other end is connected with the second fine powder separator; the second powder pumping mechanism is connected with the bottom of the second furnace powder bin; the second powder delivery mechanism is connected with the second powder feeding mechanism at one end. The second powder pumping mechanism is connected, and the other end is connected to the other side of the manual contact door

[0004] The above-mentioned invention of the power station boiler adjacent furnace powder transfer device solves the problems of manual cleaning and discharge of the accumulated powder spontaneous combustion and explosion, serious environmental pollution, and energy medium loss and waste. It saves energy and ensures the safe, economical and stable operation of the unit. There is a plugging blind plate at the joint of the hose, which is used to close the pipeline. When the powder is turned, it is necessary to remove the plugging blind plate one by one, and then connect with the powder outlet pipes of the first furnace powder bin and the second furnace powder bin. After the connection, powder transfer is completed, it needs to be disconnected and separated to reinstall the blocking blind plate, which is time-consuming and labor-intensive, which is easy to waste a lot of manpower and material resources, and reduces the efficiency of powder transfer

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