CN102564071A

CN102564071A - Circulating cooling water low-temperature exhaust heat drying bed for large-scale power station

Info

Publication number: CN102564071A
Application number: CN2011104050097A
Authority: CN
Inventors: 张咸民; 张伟杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-30
Filing date: 2011-11-30
Publication date: 2012-07-11
Anticipated expiration: 2031-11-30
Also published as: CN102564071B

Abstract

The invention relates to a circulating cooling water low-temperature exhaust heat drying bed for a large-scale power station, belonging to the technical field of auxiliary machines mated with a boiler. The circulating cooling water low-temperature exhaust heat drying bed is characterized in that discarded hot circulating cooling water low-temperature exhaust heat of the power station is applied to a large-scale drying device by using an annular self-unloading device. The cost of drying materials is saved, and the requirement of recycling circulating water by reducing the temperature of the circulating water can be achieved through a drying process. A drying device manufacturing enterprise is free of a development mode of depending on the introduction of foreign technologies and mutual imitation among enterprises, the manufacture of the drying device is promoted to trend to energy saving, environment protection, automatic control and upsizing, and the competitiveness is enhanced for seizing international and domestic markets. Meanwhile, efficient utilization of circulating water exhaust heat of the power station is enabled to be more practical, standardized and scaled. The significance is achieved for reducing power generation cost and increasing economic benefit and social benefit.

Description

Large-scale power station recirculated cooling water low temperature exhaust heat drying bed

One, technical field

The present invention relates to large-scale power station recirculated cooling water low temperature exhaust heat drying bed, belong to boiler complete auxiliaries technical field.

Two, background technology

At present power station cold junction heat loss is serious, and its loss amount has surpassed the heat that steam turbine is used for work done.Because the work that generator does not stop, what recirculated water did not then stop throws aside waste heat in environment, has caused energy waste and significantly environment heat affecting naturally.Temperature at discharging condensate is unlikely to violate the rules in order to make according to external some power plant of relevant report, does not stint to employ and only sits the marine site of just hesitating go back to of once flowing in the cooling tower, and its purpose only is for warm water discharge is raise the several years less.It is thus clear that abandoning heat, circulating cooling water of power plant become thorny problem in the power construction environmental protection.Have only through other approach to be used to expect part or all of recovery, Da Daore machine integrated heat efficiency reduces coal consumption and realizes the zero thermal pollution to environment.

Three, summary of the invention

The object of the invention is to solve above-mentioned existing problems, is thermal source with recirculated cooling water and boiler blowdown water low temperature exhaust heat, is applied to drying equipment to annular " dumping device " technology.Reach the effect that reduces cooling water temperature simultaneously in the dried material process.And realize simultaneously environment zero thermal pollution reducing drying cost.It is characterized in that: drying bed mainly contains framework, annular material bed and circulation three parts and forms.Frame part comprises framework vertical rod 1; Framework is support 25 vertically; Framework is support 15 laterally; Framework transverse beam 8; The monomer frame of forming is combined into whole ring-like framework with connecting plate 14 then.Circulating water pipe group 24 is down carried on framework transverse beam 8 tops; Two ends and framework vertical rod 1 are joined, and are provided with driven support roller 7 and driving wheel 13, and it is end to end with discharge zone 19 that feeding device 26 is established in the framework top.Establish the cold wind import before the backwater tube sheet header 20, material bed part comprises; Connect material bed supporting leg 11 by material bed crossbeam 4 two ends; A material supporting leg upper end is vertically supportted 18 with the material bed and is connected, and the lower end connects annular disk 9, vertically supports on 18 all apart from distribution axle bed 12; The trip shaft 3 of Turnover bunker 5 both sides is located in the axle bed supporting; Push rod 2 is located at both sides, hopper 5 rear portion respectively, and following termination movable pulley 10 is with excessive bridge 27 looping dumping devices.Recirculating cooling water system is then by the water inlet 23 taps tube sheet header 21 of intaking up and down; Top box is communicated with plumage shape pipe group 16, and nowel is communicated with plumage shape pipe group 24, is used to logical backwater tube sheet header 20.Be communicated with cooling system through water return outlet 22 respectively.

Four, description of drawings:

Fig. 1 floor plan sketch map

Connect floor map between Fig. 2 hopper

Fig. 3 structure schematic cross section

Fig. 4 structure vertical section sketch map

Sketch map in the action of Fig. 5 dumping device is former

1 framework vertical rod; 2 push rods; 3 trip shafts; 4 material bed crossbeams; 5 Turnover bunkers; 6 leakproof flaps; 7 driven support rollers; 8 cruciform bracings; 9 annular disks; 10 movable pulleies, 11 material bed supporting legs; 12 axle beds; 13 active support rollers; 14 connecting plates; 15 frameworks laterally support; On the 16 plumage shape pipe groups; 17 round disk rakes; 18 material beds vertically support; 19 boiler water blow-down pipes; 20 backwater tube sheet headers; 21 water inlet tube sheet headers; 22 water return outlets; 23 water inlets; Under the 24 plumage shape pipe groups; 25 frameworks vertically support; 26 feeding devices; 27 excessive bridges; 28 discharge zones; 29 cold wind imports; 30 evaporation blast pipes.31 cold wind flow to.

Five, the specific embodiment

Do further to explain with regard to the concrete operation principle tool of large-scale recirculated cooling water low temperature exhaust heat drying bed below in conjunction with accompanying drawing.Cooling residual heat water is by water inlet 23, and two groups of tube sheet headers 21 are shunted in each plumage shape pipe of pipe group 16 and pipe group 24 about the warp respectively, in flowing, dispel the heat in bed through plumage shape fin.The material that is dried is sent into hopper 5 by feeding device; Material bed operating direction flows to identical with remaining hot water; Material then absorbs the heat that is distributed by fin on the way, and dish broken rake 17 in garden can be used for the anti-curing fragmentation of mud class sticky material, can play common material and stir stirring and add the effect that speed is not stayed the dead angle; Do not take and can hang, hopper 5 can be changed by the actual drying material.Cold wind is indoor by import 29 incorgruous entering beds; From bottom to top become convection current with the evaporation blast pipe is emerging; Accelerate the dry evaporation rate of plumage shape pipe heat radiation also the promotion simultaneously material; Along with the heat absorption evaporative drying process recirculated cooling water waste heat of material is reduced, otherwise the decline material that Sui waste heat supply temperature reaches and has also reached drying purpose.Dry material gets into discharging zone 28 o'clock, and movable pulley begins to contact with excessive bridge 27, and the dumping device unloading promptly begins.Empty hopper gets into material containing below the feeding device again after resetting again, go round and begin again.Summer, natural temperature was higher than cooling when temperature required, and air inlet will add cold wind equipment to guarantee unit cold junction needs.

Claims

1. large-scale power station recirculated cooling water low temperature exhaust heat drying bed of the present invention is characterised in that: by the framework vertical rod; Framework laterally supports; Framework is support and cruciform bracing compositing monomer frame vertically, is combined into framework integral body with connecting plate then, and is provided with driven support roller or driving wheel in the crossbeam both sides.Crossbeam carries plumage shape pipe group, and support roller carries the material bed, and the material bed comprises material bed supporting leg; The vertically support of material bed; The laterally support of material bed; Material bed crossbeam and Turnover bunker; Axle bed, trip shaft is established in the Turnover bunker both sides; The both sides, rear portion are provided with push rod, and movable pulley is established in the push rod lower end; The Turnover bunker upper back leakage flap of setting up defences, be used to prevent between hopper hasty and careless leakage material and not shadow when discharging, overturn circulation; Connect into water tube sheet header by water inlet, two groups connect to backwater tube sheet couplet pipe about the plumage shape pipe component, are connected with the circulation cooling backwater through delivery port; Plumage shape pipe was organized 24 belows before the cold wind air inlet was located at backwater tube sheet header; Form convection current with the evaporation blast pipe that is located at reinforced position, framework top, help to accelerate the heat release rate of plumage shape pipe group and accelerate the material heat absorption, disc harrow is located in the square bearer; Be used to stir material and prevent the sticky material caking; Increase the suitable industry of drying bed, feed arrangement is located at the drying bed framework upper, forms end to end with discharge zone 28.

2. it is characterized in that according to the said large-scale power station recirculated cooling water of claim 1 waste heat drying bed: by Turnover bunker, trip shaft, axle bed, push rod, movable pulley and excessive bridge " dumping device " that form.

3. the characteristic according to the said large-scale power station recirculated cooling water of claim 1 waste heat drying bed also is to be provided with round disk rake and convection current cold wind evaporation air outlet duct system.