CN201203132Y

CN201203132Y - Novel initiating apparatus of gas pulse soot blower

Info

Publication number: CN201203132Y
Application number: CNU2008200099426U
Authority: CN
Inventors: 于瑞凯
Original assignee: HARBIN RUIER ENERGY SOURCE TECHNOLOGY Co Ltd
Current assignee: HARBIN RUIER ENERGY SOURCE TECHNOLOGY Co Ltd
Priority date: 2008-04-17
Filing date: 2008-04-17
Publication date: 2009-03-04
Anticipated expiration: 2018-04-17

Abstract

Disclosed is a novel initiating mechanism of fuel gas pulse soot blower, comprising integrated mixed igniting chamber and pulse generators. A gas mixer is provided with an air inlet and a fuel gas inlet; the two inlets are respectively provided with an air control valve and a fuel gas control valve; the rear section of the mixed igniting chamber is provided with a plurality of abreast arranged branch chambers that are separated from each other; each branch chamber is provided with a mixed gas outlet port; and each mixed gas outlet port is connected with a pulse generator. The utility model has the advantage that the novel initiating mechanism can connect more generators to reduce the number of initiating mechanism such that the once investment cost can be saved by more than one half. Since the generators are separated from each other and do not interfere with each other, the novel initiating mechanism solves the typical problems that the initiating mechanism cannot uniformly supply gas to all the connected generators and jet nozzles of the generators are easy to be blocked by soot.

Description

The novel initiating device of fuel gas pulse ash blower device

Technical field

The utility model relates to a kind of novel initiating device that is used for the fuel gas pulse ash blower device, is mainly used in to produce the high-voltage pulse air-flow to remove the dust stratification of boiler back end ductwork internal heating surface.

Background technology

The operation principle of fuel gas pulse ash blower system is that a certain amount of fuel gas and air after the abundant blending, are entered impulse generator along pipeline in predetermined ratio in blender, forms high turbulent flow therein.Subsequently, the initiator combustible gas that ignites, flame imports the impulse generator turbulent flow combustible gas that ignites along the gaseous mixture pipeline into high speed and forms detonation, gas sharply raises in extremely short time internal pressure and temperature, expand rapidly, forming strong compressional wave is deflagration wave, under the enforce compression of the modulating action of impulse generator and pulse spout, the deflagration wave of strengthening is propagated forward towards spout along the pulse with certain energy and direction, and at the unexpected cross section formation shock wave of expanding of spout outlet, directly act on the heating surface surface, remove the dust stratification of heating surface.

Core component as the impulse soot blowing system, generally be provided with gas mixer, igniting surge chamber, by-pass valve control and elements such as back-fire relief, check and igniting in the conventional pulse initiating device, be mainly used in air mixture and air, it is sent into pipeline and impulse generator, and cause detonation in the moment of regulation.

Shown in Figure 1 is the structure of existing a kind of typical pulse initiating device, and this typical pulse initiating device has only a gaseous mixture output interface (gaseous mixture pipeline 5), can only connect 1～3 impulse generator 6 usually.And the impulse generator 6 of all connections must also can only be imported gaseous mixture and detonation simultaneously simultaneously.Because the direct UNICOM of the spout boiler flue of impulse generator 6, and the flue gas pressures difference of diverse location in the stove, make the environmental pressure difference of the spout outlet of each impulse generator 6, because the spout outlet pressure is inconsistent, when making the soot blower operation, the gas quantity inequality that enters each impulse generator 6, even may not have or have only the combustion gas of minute quantity to enter certain impulse generator 6, cause the impulse generator 6 detonation intensity differences on same road, grey effect is blown in influence.Be connected by gaseous mixture pipeline 5 owing to each impulse generator 6 simultaneously, spout outlet pressure difference can make flue gas pass through impulse generator 6 and gaseous mixture pipeline 5 counterdiffusion mutually, bring flying dust into spout, the inside and outside temperature difference of flue makes the moisture content condensation in spout in the flue gas separate out again simultaneously, mix that with ash ash is bonded in the spout, cause spout to stop up impulse generator 6 is lost and blow the ash effect.

Summary of the invention

The purpose of this utility model just provides a kind of novel initiating device that is used for the fuel gas pulse ash blower device, with solve that prior art exists owing to inconsistent influence of each impulse generator spout outlet pressure blown grey effect; And owing to each impulse generator is connected by the gaseous mixture pipeline, spout outlet pressure difference can make flue gas spread mutually by impulse generator and gaseous mixture pipeline, bring flying dust into spout, the inside and outside temperature difference of flue makes the moisture content condensation in spout in the flue gas separate out again simultaneously, mix that with ash ash is bonded in the spout, cause spout to stop up impulse generator is lost the problem of blowing the ash effect.

The technical solution of the utility model is: comprise the gas mixer that is linked in sequence, igniting surge chamber and impulse generator, be provided with air and fuel gas inlet at gas mixer, on these two inlets, air shut-off valve door and gas control valve door are housed respectively, it is characterized in that: described gas mixer and igniting surge chamber are located in the same housing, constitute incorporate mixed firing chamber, back segment in this mixed firing chamber is provided with the sub-chamber arranged side by side of a plurality of mutual isolation, respectively be provided with a gaseous mixture output interface in each this sub-chamber, each this gaseous mixture output interface all connects an impulse generator.

Inlet in described each sub-chamber is equipped with a unidirectional air guide element, outlet in described each sub-chamber is equipped with a restricting element, respectively be connected one road air pipe line between the air-flow control end of the restricting element in the air intake of described mixed firing chamber and each sub-chamber, on each this road air pipe line, respectively be connected with control damper.

The utility model has the advantages that: can connect more generators, thereby can reduce the quantity of initiating device, the disposable input cost of equipment can be saved over half.Because each generator is isolated mutually, mutually noninterfere, fundamentally solved the problem that typical initiating device can not evenly be supplied with gaseous mixture and the stifled ash of generator spout to the generator that is connected.Because the design of annular seal space can make soot blower system adjust the flow direction of gaseous mixture as required flexibly, make all generators to work independently simultaneously, also can move simultaneously by multiple spot, thereby grey effect is blown in saving operating cost and raising.

Description of drawings

Fig. 1 is the general structure schematic diagram of prior art;

Fig. 2 is a general structure schematic diagram of the present utility model.

Description of reference numerals:

1. gas control valve assembly, 2. air shut-off valve assembly, 3. blender, 4. igniting surge chamber, 5. gaseous mixture pipeline, 6. impulse generator, 7. incorporate mixing point firearm, 8. unidirectional air guide element, 9. restricting element, 10. air pipe line, 11. control dampers.

The specific embodiment

Referring to Fig. 1, the utility model comprises incorporate mixing point firearm 7 and impulse generator 6, integrated blender of the prior art and two parts of igniting surge chamber in the same housing of mixing point firearm 7, input at mixing point firearm 7 is provided with air intake and fuel gas inlet, on these two inlets air shut-off valve door 2 and gas control valve door 1 is housed respectively.Back segment in this mixed firing chamber 7 is provided with the sub-chamber arranged side by side of a plurality of mutual isolation, respectively is provided with a gaseous mixture output interface in each this sub-chamber, and each this gaseous mixture output interface all connects an impulse generator 6 by a gaseous mixture pipeline 5.

Inlet in described each sub-chamber is equipped with a unidirectional air guide element 8, outlet in described each sub-chamber is equipped with a restricting element 9, respectively be connected one road air pipe line 10 between the air-flow control end of the restricting element 9 in the air intake of described mixed firing chamber 7 and each sub-chamber, on each this road air pipe line 10, respectively be connected with control valve 11.Can adjust the amount of restriction of restricting element 9 by control damper 11, thereby change the duty that pressure in each sub-chamber is controlled unidirectional air guide element 8, play the effect of sealing and isolated gaseous mixture.

Claims

1, a kind of novel initiating device that is used for the fuel gas pulse ash blower device, comprise the gas mixer that is linked in sequence, igniting surge chamber and impulse generator, be provided with air intake and fuel gas inlet at gas mixer, on these two inlets, air shut-off valve door and gas control valve door are housed respectively, it is characterized in that: described gas mixer and igniting surge chamber are located in the same housing, constitute incorporate mixed firing chamber, back segment in this mixed firing chamber is provided with the sub-chamber arranged side by side of a plurality of mutual isolation, respectively be provided with a gaseous mixture output interface in each this sub-chamber, each this gaseous mixture output interface all connects an impulse generator.

2, the novel initiating device that is used for the fuel gas pulse ash blower device according to claim 1, it is characterized in that: the inlet in described each sub-chamber is equipped with a unidirectional air guide element, outlet in described each sub-chamber is equipped with a restricting element, respectively be connected one road air pipe line between the air-flow control end of the restricting element in the air intake of described mixed firing chamber and each sub-chamber, on each this road air pipe line, respectively be connected with control damper.