CN101290133A

CN101290133A - Multi-jet spray pulse conduit pipe

Info

Publication number: CN101290133A
Application number: CNA2008101124595A
Authority: CN
Inventors: 曹义国
Original assignee: BEIJING GAOZHAN SCIENCE AND TECHNOLOGY Co Ltd
Current assignee: BEIJING GAOZHAN SCIENCE AND TECHNOLOGY Co Ltd
Priority date: 2008-05-23
Filing date: 2008-05-23
Publication date: 2008-10-22

Abstract

The invention belongs to the thermal explosion pulse sootblowing technical field, and in particular relates to a multi-nozzle pulse conduit of a thermal explosion pulse sootblower, mainly comprising the multi-nozzle pulse conduit with an upward tail end connected with an elbow in 90 degrees, wherein, an end enclosure or a concentric reducer is connected under the elbow, and an ash discharging port is arranged on the bottom of the end enclosure or on the nethermost part of the concentric reducer. The multi-nozzle pulse conduit has the advantages that the multi-nozzle pulse conduit of the thermal explosion pulse sootblower provides a proposal with extreme high security under the circumstance that the nozzles are upward, well protects a heating surface to which the nozzles face, and greatly improves the application security of the thermal explosion pulse sootblower.

Description

A kind of multi-jet spray pulse conduit pipe

Technical field

The invention belongs to the heat explosion pulse ash-blowing technical field, be specifically related to a kind of multi-jet spray pulse conduit pipe of heat exploding pulse sootblower.

Background technology

Heat exploding pulse sootblower is called for short pulse soot blower, have another name called the shock-wave ash blowing device, the shock wave soot blower, weak quick-fried soot blower, blast wave blower, the detonation wave soot blower, pinking pulse soot blower etc., invent by the people of the former Soviet Union the earliest, imported China in 1988 into, develop by " gas big gun ", its basic principle of blowing ash is: the gaseous mixture that makes fuel and oxidant gas with impulse generator that flue is communicated with in light a fire and explode, utilize " the alternation punching press is inhaled and drawn effect " of the compression shock ripple of blast generation, " the purging effect " of " physics effect of micro-explosion " and high-speed pulse jet blown down the various dust stratifications on boiler heating surface and the flue wall, has vibration simultaneously concurrently, three kinds of deashing effects of sound wave and high temperature pyrolysis.Impulse generator claims shock wave generator, surge generator, blast wave generator, detonation wave generator, blast jar, Impulsive tank etc. again; Impulse generator can directly be communicated with flue, also can be communicated with flue by pulse conduit, and pulse conduit claims transmitting tube, jet pipe etc. again.Because belonging to dry type blows ash, and blow that grey intensity height, no dead angle, sphere of action are big, good energy-conserving effect, equipment dependability height, to blow grey expense cheap, has impayable superiority with traditional steam soot blowing ratio, not only be used for heated surface at the end of boiler at large and replaced traditional steam soot blowing, and begin to be used to blow down industrial furnace interior dust stratification and slagging scorification, even also attempted being used for other occasions such as auxiliary deashing of electrostatic precipitator.

Some application scenario at heat exploding pulse sootblower, need to adopt to have a row's spout and a spout multi-jet spray pulse conduit pipe up on the periphery along its length, for example just need to adopt such pulse conduit for the revolution air preheater of large-sized boiler blows grey impulse generator.The subject matter that existing this class pulse conduit in use exists is:

1. the fly ash powder that falls from the pulse conduit top falls into from spout up and forms dry and soft dust stratification in the jet pipe, the pulsing jet that can produce with exploding when pulse soot blower blows grey operation is to the heating surface high velocity jet, heating surface is caused strong erosive wear, in the course of time very easily damage heating surface, even bring out security incidents such as " boosters ";

2. fall into from spout and in the pulse conduit fly ash powder arranged not only, sometimes refractory material chip that also has the coking fragment, falls on harden black dirt fragment, the furnace wall etc., the pulsing jet high velocity jet that these fragment chips also can produce with blast when pulse soot blower blows grey operation is come out, just as old-typed weapons eject " rifle sand ", the safety of heating surface and flue is constituted a serious threat.

Summary of the invention

The objective of the invention is to: a kind of multi-jet spray pulse conduit pipe is provided, and this pulse conduit can be avoided the above-mentioned deficiency of prior art.

The solution of the present invention is: a kind of multi-jet spray pulse conduit pipe, mainly comprise catheter body, have row spout up at the length direction of the periphery upper edge of catheter body catheter body, be connected with down 90 degree elbows at the end of catheter body, at the end of this elbow:

(1) or be connected with concave upright end socket, have in the bottom of end socket and let out ash mouthful, establishing this actual internal area of letting out ash mouthful and be on A, the spout body all, the actual internal area sum of spouts is B, then 80mm ²≤ A≤25%B;

(2) or be connected with little catotropic concentric reducer, the below of concentric reducer has lets out ash mouthful, establishes this actual internal area of letting out ash mouthful and be on A, the spout body all that the actual internal area sum of spouts is B, then≤and A≤25%B.

Test shows: the end of catheter body be connected with 90 the degree elbows and bottom let out the ash mouthful sectional area more than or equal to 80mm ²The overwhelming majority that falls into fly ash powder in the catheter body and various fragment chips from spout can both blow in the terminal elbow by air blast, and because the effect of gravity and explosion vibration is finally discharged from tapping bottom, spray at a high speed, heating surface is caused erosive wear and constitutes security threat thereby avoid being driven from spout by air blast.Because perforate sectional area bottom is smaller or equal to 25%B and be in least significant end, the pressure release effect of this perforate is also not obvious to the influence of blowing grey effect.

Positive part of the present invention is: for the multi-jet spray pulse conduit pipe of heat exploding pulse sootblower provides a kind of security high scheme under spout situation up; protected well spout towards heating surface, greatly improved the application security of heat exploding pulse sootblower.

In order more to help falling into the flying dust in the catheter body and the discharge of various fragment chips, diameter can also be arranged below each spout on the catheter body more than or equal to the aperture of 10mmm smaller or equal to 25mm.

Description of drawings

Below in conjunction with accompanying drawing, the present invention is provided further instruction by specific embodiment.

Accompanying drawing 1 is that the master of the embodiment of the invention 1 looks cutaway view;

Accompanying drawing 2 is vertical views of the embodiment of the invention 1;

Accompanying drawing 3 is that the master of the embodiment of the invention 2 looks cutaway view;

Accompanying drawing 4 is vertical views of the embodiment of the invention 2.

Among the figure: 1. pulse conduit body, 2.90 degree elbows, 3. end socket, 4. concentric reducer is 5. let out ash mouthful, 6. spout, 7. aperture.

The specific embodiment

Embodiment 1

As accompanying drawing 1 to shown in the accompanying drawing 2, the top of pulse conduit 1 has row's spout 6 vertically, under each spout 6, the aperture 7 that to have a diameter accordingly be φ 15mm, end in pulse conduit 1 is welded with footpath elbow 2, is welded with ellipse head 3 in the lower end of elbow 2, has in the bottom of ellipse head 3 to let out ash mouth 5, the external diameter of pulse conduit 1 is φ 219mm, and all total actual internal area of spout is 7000mm ², the diameter of letting out ash mouth 5 is φ 30mm.

Embodiment 2

To shown in the accompanying drawing 4, present embodiment is substantially the same manner as Example 1 as accompanying drawing 3, difference be elbow 2 lower end welding be concentric reducer 4, all total actual internal area of spouts is 10000mm ², the diameter of letting out ash mouth 5 is φ 50mm, each spout below does not have corresponding aperture.

Claims

1. multi-jet spray pulse conduit pipe, mainly comprise catheter body (1), length direction in the periphery upper edge of catheter body (1) catheter body has row spout (6) up, it is characterized in that: be connected with down 90 degree elbows (2), end in this elbow (2) at the end of catheter body (1):

(1) or be connected with concave upright end socket (3), have in the bottom of end socket (3) and let out ash mouthful (5), establishing this actual internal area of letting out ash mouthful (5) and be the actual internal area sum that A, spout body (1) go up whole spouts (6) is B, then 80mm ²≤ A≤25%B;

(2) or be connected with little catotropic concentric reducer (4), the below of concentric reducer (4) has lets out ash mouthful (5), if this actual internal area of letting out ash mouthful (5) is that the actual internal area sum of A, the last whole spouts (6) of spout body (1) is B, then≤A≤25%B.

2. multi-jet spray pulse conduit pipe according to claim 1 is characterized in that: also have diameter more than or equal to the aperture of 10mmm smaller or equal to 25mm in the below of each spout (6).