CN201531891U

CN201531891U - Shock-wave boaster

Info

Publication number: CN201531891U
Application number: CN2009202543613U
Authority: CN
Inventors: 田小龙
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-11-06
Filing date: 2009-11-06
Publication date: 2010-07-21
Anticipated expiration: 2019-11-06

Abstract

The utility model discloses a shock-wave boaster. A main body of the boaster is an air storage tank (4), the bottom end of the air storage tank (4) is provided with a sealing gland (1) with a ventilation opening (11), a shock tube (5) is arranged inside the air storage tank (4), a nozzle end of the shock tube (5) extends out of the air storage tank (4), a movable valve (2) is arranged between the sealing gland (1) and an inlet of the shock tube (5) inside the air storage tank (4), and the movable valve (2) is provided with a sealing ring (21) and a unidirectional air inlet valve (3). The shock-wave boaster not only can remove dust for a heating furnace and a heat exchanger, but also can be applied to removing dust for a hearth portion of a pulverized coal furnace, has simple structure, can remove dust thoroughly and is safer and more reliable.

Description

The shock-wave ash blowing device

Technical field

The utility model relates to a kind of soot blower, particularly a kind of shock-wave ash blowing device.

Background technology

Boiler, heating furnace and the coking of heat exchanger dust stratification for a long time is a hard nut to crack always, and it is the heat transfer efficiency that influences heating surface, the one of the main reasons that causes decrease in efficiency.Owing to influenced by inferior fuel, most of stove all exists dust stratification, coking phenomenon.Flue stops up, and it is not smooth to discharge fume, and exhaust gas temperature improves, and makes the cigarette speed at local heating face place too high, and wearing and tearing increase, and makes the rear portion heating surface more be subject to the influence of " acid is revealed ", and corrosion is accelerated, and brings out the generation of security incidents such as leakage, booster easily.May cause the corrosion and unexpected shut-down of body of heater when situation is serious, cause great economic loss.Reduced the boiler unit utilization rate, reduced boiler thermal output, increased coal consumption; For addressing this problem, especially for the sticking ash of high temperature slagging scorification, oiliness, the low temperature dust stratification that hardens, using maximum ash disposal now is weak quick-fried soot blower.The weak quick-fried ash that blows utilizes gaseous fuels commonly used such as fuel gas such as acetylene, coal gas, natural gas, liquefied petroleum gas, conflagration produces certain surge pressure in the combustion chamber of particular design, and act on repeatedly on the dust stratification surface at spout place launching shock ripple on the efferent duct and strong sound wave, even than the hard black dirt, its " pine shakes " come off.Weak quick-fried soot blower can not be applied to the ash that blows at coal-powder boiler burner hearth position; Can not be arranged in the spout at the spout of flue inside high-temperature surface place when special, the high-temperature stability, high-temperature flue gas, cigarette ash that should be taken into account spout during design is to the influence to spout of the erosive wear of spout and the corrosive gas in the flue gas; Need periodic replacement acetylene; There is potential safety hazard etc.

Summary of the invention

The purpose of this utility model can be used in the position ash disposal of coal-powder boiler burner hearth again heating furnace and heat exchanger ash disposal and provide a kind of for overcoming above-mentioned weak point, and simple in structure, and ash disposal is thorough, the shock-wave ash blowing device of safety and reliability.

The technical scheme that the utility model adopted is: the main body of shock-wave ash blowing device is an air accumulator, the sealing gland that has blow vent is established in described air accumulator bottom, and portion establishes shock tube within it, shock tube spout end stretches out air accumulator, establish movement of valve in air accumulator and between sealing gland and shock tube import, this movement of valve is provided with sealing ring and breather cheek valve.

As a kind of improvement of the present utility model, on sealing gland and near air accumulator one side, establish cushion pad, accordingly, on movement of valve, also be provided with cushion pad.

As another improvement of the present utility model, establish sealing gasket in the contact site of movement of valve and shock tube.

The working media that the utility model is selected for use is compressed air or steam, does not at first exist the fuel gas pipeline leakage of gas type shock-wave ash blowing device, combustion gas burner hearth to leak potential safety hazards such as bore premature, tempering detonation, excessive gas explosion.Second is applied widely, and the energy-conservation soot blower of steam (air) shock wave can be applicable to the All Ranges that comprises high temperature superheater, is not subjected to the influence of high temperature section temperature and body of heater malleation fluctuation.Can be arranged in each position of boiler, can blow ash the heating surface of burner hearth, horizontal flue, tail vertical well.The 3rd. simplify a cover control system, empty cabinet, compressed air gas source and air accumulator, pulse shock wave generator and the pipeline of distributing of a cover compression than other soot blower system.The 4th. operating cost is low, investment is little, and operating cost is short with soot blower, duration that investment is lower than present form of ownership under the situation on year-on-year basis, and separate unit is installed and can be finished in one day, and is convenient for installation and maintenance.The 5th. fault rate is low: structure is different with the gas shock-wave ash blowing device, its inside of time spent can not produce the ponding dust stratification at ordinary times. system simplification, not having the acetylene feeder, do not have acetylene distribution igniter. control section is simplified, and reduces the link of filling acetylene gas and igniting, safety and reliability.

The lower end of the utility model shock wave generator is provided with the seal cover that has blow vent, and movement of valve is provided with breather cheek valve, and this ash disposal system configuration structure is simple, easy for installation, simple and convenient operation and maintenance.Operating cost is low, and is good in economic efficiency, and the deashing time is short, the cleaning efficiency height, and sphere of action is wide, and effect is thorough, not only can thoroughly remove loose dust stratification, also can remove high temperature slagging scorification, the sticking ash of oiliness, moderate tack dust stratification.On the boiler of cleaning, use, but its original clean level of long term maintenance.Combustion chamber draft and boiler working condition without any harmful effect, are not produced wet steam, can not destroy piping and furnace wall.Owing to be installed in outside the stove, do not take heat transfer space, operation energy consumption is little, and the operation and maintenance expense is low.Be specially adapted to the large and medium-sized boiler that line construction is tight, be easy to stifled ash.The energy-conservation ash disposal whole system of steam (air) shock wave does not have mechanical movement parts, no vulnerable part.

Description of drawings

Fig. 1 is the utility model shock-wave ash blowing device structural representation.

The specific embodiment

As shown in Figure 1, the main body of shock-wave ash blowing device is an air accumulator 4, the sealing gland 1 that has blow vent 11 is established in air accumulator 4 bottoms, and portion establishes shock tube 5 within it, shock tube 5 spout ends stretch out air accumulator 4, establish movement of valve 2 in air accumulator 4 and between sealing gland 1 and shock tube 5 imports, this movement of valve 2 is provided with sealing ring 21 and breather cheek valve 3.The utility model also is provided with cushion pad 12 on sealing gland 1 and near air accumulator 4 one sides, accordingly, also be provided with cushion pad 12 on movement of valve 1, to prevent the impact of sealing gland 1 and movement of valve 2, prolongs its service life.The utility model is established sealing gasket 22 in the contact site of movement of valve 2 and shock tube 5, promptly opens a groove on movement of valve 2, and sealing gasket 22 is positioned in the groove, and sealing pad 22 is with the opening sealing of air accumulator 4, to prevent the high pressure gas leakage in the air accumulator 4.

During ash disposal, high-pressure aerated device is with the blow vent 11 of working media by sealing gland 1, the compressed air that certain pressure is arranged is imported air accumulator 4 bottoms in the shock wave generator, pressure-air promotes movement of valve 2 to shock tube 5 motions, gases at high pressure enter air accumulator 4 by the breather cheek valve on the movement of valve 23 simultaneously, movement of valve 2 moves to when sealing shock tube 5, close high-pressure aerated device, blow vent 11 by sealing gland 1 is emitted the gases at high pressure of air accumulator 4 bottoms, move rapidly to seal cover 1 under the promotion of the gases at high pressure of movement of valve 2 in air accumulator 4, movement of valve 2 leaves shock tube 5, low-pressure gas moment contact the generation shock wave in air accumulator 4 inner high voltage gases and the shock tube 5, shock wave enters in the stove through shock tube 5 spouts, and the vibrations of generation come off the black dirt on the boiler heating surface, and are taken away by flue gas.The utility model internal pressure reduces rapidly, opens high-pressure aerated device pressure-air again and is imported again, restarts shock wave generator, thereby moves in circles work, and cycle-index will be set according to the order of severity of collecting ash of the different coals of burning.By adjustment, can control and obtain desirable shock strength the compressed air different pressures.Thereby can make the intensity of shock wave be fit to the dust stratification type that its correspondence is blown object, blow grey effect to reach the best.

Claims

1. shock-wave ash blowing device, it is characterized in that: the main body of shock-wave ash blowing device is air accumulator (4), the sealing gland (1) that has blow vent (11) is established in described air accumulator (4) bottom, and portion establishes shock tube (5) within it, shock tube (5) spout end stretches out air accumulator (4), establish movement of valve (2) in air accumulator (4) and between sealing gland (1) and shock tube (5) import, this movement of valve (2) is provided with sealing ring (21) and breather cheek valve (3).

2. shock-wave ash blowing device according to claim 1 is characterized in that, upward and near air accumulator (4) one sides is provided with cushion pad (12) at sealing gland (1), accordingly, also is provided with cushion pad (12) on movement of valve (2).

3. shock-wave ash blowing device according to claim 1 and 2 is characterized in that, establishes sealing gasket (22) in the contact site of movement of valve (2) and shock tube (5).