CN2399610Y

CN2399610Y - Combustibility gas pulse ash blower

Info

Publication number: CN2399610Y
Application number: CN 99229911
Authority: CN
Inventors: 孟蓬强
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-11-11
Filing date: 1999-11-11
Publication date: 2000-10-04
Anticipated expiration: 2009-11-11

Abstract

The utility model discloses a fuel gas pulse soot blower, which is characterized in that a fuel gas pipeline is orderly provided with a fuel gas collecting box, a wavy board type fire arrester, a check valve and an igniter, wherein, the rear end of the igniter is successively connected with an accelerating tube connected with at least one deflagration chamber; each deflagration chamber is connected with at least one impact tube, and round steel or T-shaped steel is regularly arranged in a stagger mode in the deflagration chamber; a simple fire arrester is additionally arranged between the check valve and the igniter. The utility model has the advantages of simple structure, high safety, less maintenance and obvious on-line blowing effect.

Description

Imflammable gas gas pulse soot blower

The utility model belongs to the removing or the processing technology field of combustion products or combustion residue, relate to a kind of positions such as heating surface such as power plant boiler superheater, economizer and back-end ductwork, air preheater, electric precipitation that are applicable to and blow the device of ash, particularly a kind of imflammable gas gas pulse soot blower (F23J1/00).

Thermal power plant is because be fuel with coal, boiler heating surface and back-end ductwork are owing to reasons such as its design feature and flow of flue gas, its superficial dust of objective reality, clogging, the position that has often reaches the high dust stratification of 1-1.5 rice, cause the thermal resistance of heating surface to increase the decline of heat exchange effect, through-flow is reduced cigarette speed and accelerates the appearance of bad phenomenon such as concentrated wear, stay hidden danger to safety in production, cause the waste of certain energy simultaneously.

Steam, sound wave and air bubble ash disposal are more generally adopted in the home and abroad at present, and its effect is all undesirable, especially to the big capacity unit of high parameter.Steam blowing is that shower nozzle is installed on mechanical arm, send in the stove by transmission device and to purge, because the position temperature that has in the stove is higher, and width is all between 10-20 rice, often make the mechanical arm modification of being heated can not pull, in addition, in used steam and the villous themeda water is arranged, act in the stove and can harden by new dust stratification or the dust stratification of formation.Sonic soot blowing is to utilize sound wave to make CaO, CaCo ₃Tired and come off between the ash molecule.Because the boiler internal volume is bigger, exceeds its effective range, flyash concentration is higher in the flue gas in addition, influences the biography ripple of acoustic energy.To rotary regenerative air heater, its wave mode plate itself is closeer, is again energy-accumulating element simultaneously, makes sound energy attenuation very fast.Also have air bubble, it is to utilize the compressed-air actuated impulsive force that produces that discharges suddenly to purge, and living strength is very limited because pressure vessel and bleed pressure are limited the production, and it is not fairly obvious to blow grey effect.

Chinese patent 93224560.9 discloses a kind of Gas-pulse Ash-cleaning device, this device comprises blender and is attached thereto the efficient igniter that connects, link to each other with the combustion chamber by pipeline, back edge joint be efferent duct, whole connected mode all is to connect or welding with flange, is welded with the disturbance device in the inboard of combustion chamber, and it quickens burning, and produce stronger gas pulse, and be attended by the output of the big sound.Though this Gas-pulse Ash-cleaning device has advantages such as simple in structure, easy to operate, that equipment investment is low, but it has only an efferent duct, so ash disposal area or ash disposal scope are greatly limited, the form that is provided with of the efferent duct in this Gas-pulse Ash-cleaning device is also more single simultaneously, therefore the spout of being offered on the efferent duct is easily stopped up by the dust stratification under removing, thereby influences its dedusting effect.

The purpose of this utility model is to provide a kind of imflammable gas gas pulse soot blower, to overcome the existing in prior technology problem.

Task of the present utility model is finished in the following manner, a kind of imflammable gas gas pulse soot blower, plenum chamber is installed on the combustible gas pipeline successively, the board-like spark arrester of wave mode, non-return flap and igniter, the continued access of igniter rear end has accelerating tube, this accelerating tube links to each other with the detonation chamber, detonation is fixed with impact tube on the chamber, plenum chamber mainly plays gas storage and voltage stabilizing, the board-like spark arrester of wave mode is as the secondary back-fire relief, prevent that effectively flame from entering the combustible gas pipeline, non-return flap is just often opened, once there is buffer brake promptly closed, reduce buffer brake, its key is to have additional the skeleton symbol spark arrester between non-return flap and igniter, the skeleton symbol spark arrester is back-fire relief effectively, has impact-resistant performance simultaneously.

Above-mentioned skeleton symbol spark arrester can be made up of flange, back-fire relief chip, housing, and the back-fire relief chip preferably adopts tubular structure, offers some apertures on the tube wall of tubular body, an end closure of tubular body, and the other end of tubular body keeps open state.

Because the back-fire relief chip of this skeleton symbol spark arrester adopts tubular structure, back-fire relief area and traditional spark arrester are many greatly under same diameter, and be especially all stressed around it, so impact resistance is better, repeated multiple times is used continuously, and back-fire relief is respond well.

In order to improve functional reliability of the present utility model, described igniter preferably adopts high-energy igniter, and high-energy igniter need not to regulate, and is not afraid of dust stratification.

Accelerating tube can be selected caliber, length according to source of the gas, field condition, and accelerating tube can corresponding detonation chamber, also can corresponding a plurality of detonations chamber, also can shared one section accelerating tube after, quicken again respectively to enter to specify the detonation chamber by change-over gate.

Described detonation chamber interior preferably adopts first steel or the regular layout straggly of T-steel, guarantees that it produces the shock wave of sufficient intensity,

Impact tube can improve shock velocity once more, by certain pressure release area the heated part is directly released energy, detonation chamber can corresponding impact tube, also can a plurality of impact tubes of corresponding diverse location, this impact tube can be fixed on fire door, also can be fixed in the stove, kinetic energy, heat energy, acoustic energy effectively be discharged, to reach the purpose of the dust stratification of removing desired area by impact tube.

Below in conjunction with accompanying drawing shown in the embodiment the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the structural representation of skeleton symbol spark arrester;

With reference to Fig. 1, imflammable gas gas pulse soot blower is by plenum chamber 1, blower fan 2 is carried combustible gas and air respectively, combustible gas is mixed with air after by non-return flap 4 by wave mode spark arrester 3 back-fire reliefs, skeleton symbol spark arrester 5 arrives high-energy igniter 6 positions, ignited by high-energy igniter 6 simultaneously, quicken by accelerating tube 7, make flame combustion speed reach velocity of sound and enter detonation chamber 8 later on, the 8 pairs of flames in detonation chamber carry out disturbance makes pressure wave front and burning front produce detonation in the back synchronously, form shock wave, by impact tube 9 kinetic energy, heat energy, acoustic energy effectively discharges, to reach the dust stratification of removing desired area.

With reference to Fig. 2, skeleton symbol spark arrester 5 is made up of flange 52,53,55,56 and back-fire relief chip 51 and housing 54, combustible gas mixes after pipeline enters back-fire relief chip 51 with air, owing to offer some apertures on the tubular body wall of formation back-fire relief chip 51, so above-mentioned mist is delivered to igniter 6 respectively after housing 54 inside that enter spark arrester, through igniter 6 gas that ignites, quicken to enter detonation chamber 8 by accelerating tube 7 again, form detonation and produce shock wave.

Combustible gas is without interruption when igniting, but because the existence of skeleton symbol spark arrester 5, flame is when especially shock wave is being carried flame secretly and entered spark arrester housing 54, at first by dilatation, the back is decompression in housing 54, because aperture on the back-fire relief chip 51 and flame are in vertical state, flame at first impacts to the spark arrester afterbody under effect of inertia, after decay, enter fire-retardant core sheet 51 again, flame is cut apart the cooling back by aperture respectively on back-fire relief chip 51 flame-out, make flame can not pass through back-fire relief chip 51, thereby guaranteed equipment and personnel's safety.

The utility model is owing to have additional the skeleton symbol spark arrester between non-return flap and igniter, the skeleton symbol spark arrester is back-fire relief effectively, has impact-resistant performance simultaneously, so it is safe, maintenance capacity is little, and because the board-like spark arrester of wave mode also is installed on the combustible gas pipeline of plenum chamber front portion, so further guaranteed safety.

Because igniter has adopted high-energy igniter, so it be need not to be regulated, also is not afraid of dust stratification simultaneously.

Owing on the detonation chamber, have additional impact tube, impact tube not only can improve shock velocity once more, and can a plurality of impact tubes of corresponding diverse location, so can remove the dust stratification of desired area very easily by adjustment to described impact tube fixed position in same detonation chamber.

The utility model is simple in structure, safe and reliable, and online purging effect is obvious, has use value and application prospect widely.

Claims

1, a kind of imflammable gas gas pulse soot blower, plenum chamber, the board-like spark arrester of wave mode, non-return flap and igniter are installed on the combustible gas pipeline successively, the continued access of igniter rear end has accelerating tube, this accelerating tube links to each other with the detonation chamber, detonation is fixed with impact tube on the chamber, it is characterized in that having additional between non-return flap and igniter the skeleton symbol spark arrester.

2, the imflammable gas gas pulse soot blower of stipulating according to claim 1, it is characterized in that described skeleton symbol spark arrester is made up of flange, back-fire relief chip, housing, the back-fire relief chip adopts tubular structure, offer some apertures on the tube wall of tubular body, one end closure of tubular body, and the other end of tubular body keeps open state.

3,, it is characterized in that described igniter adopts high-energy igniter according to the imflammable gas gas pulse soot blower of claim 1 or 2 regulations.

4, according to the imflammable gas gas pulse soot blower of claim 1 or 2 regulations, it is characterized in that being connected with at least on the accelerating tube detonation chamber, described detonation chamber interior adopts first steel or the regular layout straggly of T-steel.

5, according to the imflammable gas gas pulse soot blower of claim 3 regulation, it is characterized in that being connected with at least on the accelerating tube detonation chamber, described detonation chamber interior adopts first steel or the regular layout straggly of T-steel.

6, according to the imflammable gas gas pulse soot blower of claim 4 regulation, it is characterized in that being connected with at least on the detonation chamber impact tube.

7, according to the imflammable gas gas pulse soot blower of claim 5 regulation, it is characterized in that being connected with at least on the detonation chamber impact tube.