CN2129381Y

CN2129381Y - Dusting device for boiler of low-frequency sound wave

Info

Publication number: CN2129381Y
Application number: CN 91205142
Authority: CN
Inventors: 屠勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-04-05
Filing date: 1991-04-05
Publication date: 1993-04-07
Anticipated expiration: 2001-04-05

Abstract

The utility model relates to a dusting device for a boiler which takes air-streams as unique motive power and which modulates the air-streams into low-frequency sound waves. Two metal discs, which are overlapped, are arranged in a cylinder type metallic shell. One disk is fixed in the middle of the shell, the disk is provided with a central shaft, and the shaft is provided with the other disk which can rotate and which is taken as a modulation component. The peripheries around the central shaft of the two disks are respectively provided with three inclined holes. The interval between each hole is equal to the diameter of the hole. The air-streams are clogged to produce a pushing force after flowing into the inclined holes, and the force drives the disks on the shaft to rotate. The hole eyes of the two disks are aligned sometimes, making the air-streams flow fluently; sometimes, the hole eyes are staggered, making the air-streams be decreased or closed. Such alternatively opened and closed air-streams makes an energy exchanging cavity produce periodic pulsating low-frequency sound waves which are emitted into the flue of the boiler to stir a sound resonance to remove dust. The modulation component can also be driven to rotate by an air scoop and a windmill, and can also be driven by a round disc which is provided with a wind wheel and three hole eyes. The modulation component is provided with various types of air-stream driving mechanisms and rotation speed automatic regulating devices which can be chosen to produce required audio-frequency.

Description

Dusting device for boiler of low-frequency sound wave

The utility model relates to a kind of new technology of removing the boiler flue dust stratification with low-frequency sound wave.

The boiler ash removal technology, traditional have compressed air soot-blowing, overheating steam blowing ash and the ball that falls to impact and blast ash disposal etc., and effect is all undesirable, and the dead angle is arranged.Utilize the low frequency strong sound wave to inject boiler flue and can thoroughly remove dust stratification and the slagging scorification on all kinds of heat exchangers in the flue, Journal of Frequency Noise and Vibration Vol5 No.1 pp9-12 1986 is seen in the at first special and gloomy proposition in Wal by the Sweden rowland of this technology.They remove the boiler flue dust stratification with positive feedback low-frequency sound generator (u.s.p.43599621982), effect is excellent, and there is not the dead angle, device has a huge resonantron, all complicated by dress and control system, domestic " infrasound and low-frequency sound generator " according to the development of Xi Baike steam whistle principle (patent No.: 89200617) cancellation resonantron, but use buncher to come the lead agency rotation, increased complexity again, the purpose of this utility model is to overcome above-mentioned deficiency, provide a kind of easy to operate by adorning, with general air-flow or superheated steam is the air-flow modulation system low-frequency sound wave soot blower of unique power, sound wave is adjustable from week 20 weeks to 30 of per second, to cooperate the acoustic resonance system in the boiler flue.

The purpose of this utility model is to realize like this, in the cylindrical metal shell, closed assembly two rosettes, a dish is fixed in the middle of the housing, central shaft is arranged on the dish, on the axle dress another be rotatable disc of using of modulation air-flow, i.e. modulating part, each makes a call to three eyelets around the two rim central shafts, each span equals the diameter in hole, when the disk on the axle rotates, when two dishes are gone up eyelet and align, make air-flow unimpeded, the time and stagger, air-flow is reduced or close, the housing latter half is a suction nozzle, and first half is followed successively by the transducing chamber, the sound larynx, sound larynx supporting ring, air-flow enters from valve, by the time disk eyelet that closes when opening, be modulated near the sinusoidal pulse pneumatic, going into the transducing chamber becomes low-frequency sound wave, is radiated boiler flue through the sound larynx and evokes acoustic resonance, reaches the ash disposal purpose.For making the modulating part rotation, the eyelet of two dishes is broken into the inclined hole that crosses one another, flow into air-flow and produced thrust because of rolling over.Also can be by other air flow drive device of dress such as wind scoop on modulating part, windmill makes it rotation.The also available disk that wind wheel is housed of modulating part with three eyelets, for stabilization of speed adjustable, adorn a kind of swing arm centrifugal speed governor at the modulating part edge, arm one end is fixed but is rotatable, the other end is for leading the friction block to the center with spring, can arrange because of centrifugal force, rub with transducing chamber hypotenuse, control the modulating part rotating speed, also available magnetic slider replaces friction block, and magnetic slider leads to the center with spring, and on the soot blower shell, other adorns one and magnetic slider distance variable, in order to regulate the removable magnetic patch that the magnetic pull size is controlled rotating speed.Owing to adopt such scheme, can obtain by adorning easy to usely, the high power low-frequency sound wave ash remover of frequency adjustable further specifies it with accompanying drawing and example to the utility model below.

Accompanying drawing 1 is a soot blower master cutaway view.

Accompanying drawing 2 is the cutaway views along Figure 1A-A secant.

Accompanying drawing 3 is the partial cut views along Fig. 2 B-B secant.

Air-flow enters three inclined holes of fixed disk (2) and the corresponding inclined hole that is folded on the rotatable disk (3) is injected transducing chamber (4) from Fig. 1 vapour lock (1), because air-flow is rolled over, produce moment, be enough to make the rotatable disk rotation, it is fashionable to forward two inclined hole interface full weights to, and it is maximum that air-flow reaches, be reduced to zero then gradually, at this moment all stagger in two inclined hole interfaces, till air-flow is increased to maximum gradually from zero again subsequently, is one-period like this.So periodically air-flow enters the transducing chamber from three inclined holes and is converted into sound wave, is radiated the flue ash disposal through sound larynx (5).The audio frequency automatic control overcomes spring (7) pulling force by speed regulator swing arm (6) with centrifugal force, and friction block is flapped toward inclined-plane, transducing chamber the speed that friction limits rotating disk (3) takes place, and audio frequency is stabilized on some values.Required frequency is set to change inclined-plane and friction block distance in inclined-plane, mat sound larynx supporting ring (8) liftable transducing chamber.

Accompanying drawing 4 is another embodiment of soot blower audio frequency robot control system(RCS).Use a magnetic slider, lead to the center, adorn a removable magnetic patch on the shell in addition, regulate two magnetic patch intermediate distances and can produce the speed that different magnetic pull are set rotating disk (3) by spring.

Accompanying drawing 5 is soot blower another embodiment with the air stream drives modulating part.Be contained in modulating part inclined hole exit and produce rotary thrust with wind scoop.

Accompanying drawing 6 is soot blower another embodiment with the air stream drives modulating part.With windmill (drawing in the end) be contained in make it on the turntable shaft rotation.

Accompanying drawing 7 drives another embodiment that the disk of corresponding eyelet makes it to rotate for soot blower with the air stream drives wind wheel.

Claims

1, a kind of air-flow modulation system low-frequency sound wave boiler ash removal device, in the cylindrical metal shell, closed assembly two rosettes, one dish is fixed in the middle of the housing, central shaft is arranged on the dish, another dish of dress on the axle, rotatable, as modulating part, each makes a call to three eyelets around the two rim central shafts, each span equals the diameter in hole, the also available wind scoop of modulating part, windmill make it rotation, the also available wind wheel that is equipped with, disk with three eyelets is characterized in that: air stream drives mechanism and the rotating speed automatic regulator that can select various ways on the modulating part for use.

2, according to the described soot blower of claim 1, it is characterized in that: the eyelet of fixed disk and rolling disc breaks into the inclined hole that crosses one another for obtaining air stream drives power.

3, according to the described soot blower of claim 1, it is characterized in that: the wind scoop that air stream drives is housed on the rotary disk.

4, according to the described soot blower of claim 1, it is characterized in that: the windmill that air stream drives is housed in the rotary disk rotating shaft.

5, according to the described soot blower of claim 1, it is characterized in that: rotate the wind wheel that air stream drives is housed in the disk rotating shaft.

6, according to the described soot blower of claim 1, it is characterized in that: for the control audio frequency is equipped with the swing arm centrifugal speed governor, an end of swing arm is fixing rotatable on the modulating part, and the other end is a friction block, can contact with transducing chamber hypotenuse, and leads to the center with spring.

7, according to the described soot blower of claim 1, it is characterized in that: for the control audio frequency slip magnetic patch formula centrifugal speed governor is housed on the modulating part, magnetic slider is led to the center with spring, and on the soot blower shell, other adorns one and magnetic slider distance variable, in order to regulate the removable magnetic patch of magnetic pull size.