CN2230436Y

CN2230436Y - High-efficiency supersonic dust-blowing device

Info

Publication number: CN2230436Y
Application number: CN 95210902
Authority: CN
Inventors: 钟高琦
Original assignee: Institute of Acoustics CAS
Current assignee: Institute of Acoustics CAS
Priority date: 1995-05-15
Filing date: 1995-05-15
Publication date: 1996-07-03
Anticipated expiration: 2005-05-15

Abstract

The utility model relates to a high-efficiency supersonic dust-blowing device which belongs to acoustic dust-blowing devices which are used in an industrial furnace. The utility model comprises a T-shaped pipe, a U-shaped ring which is sheathed on the T-shaped pipe, and an outer casing outside the U-shaped ring. A locking ring is used for fixing the U-shaped ring and the outer casing on the T-shaped pipe. When air flow passes through an air inlet and is jetted from a nozzle, hartmann oscillator type sound radiation is generated in a resonant cavity. With a secondary resonant cavity, the utility model causes sound wave to generate composite resonance and amplify power. The match towards air radiation is improved because of a ring-shaped horn, so that the efficiency is enhanced. The utility model has the advantages of high efficiency and simple process.

Description

The efficient ultrasonic soot blower

The utility model belongs to mechanical field, especially for the soot blower of industrial furnace and chemical plant installations.

Utilize acoustic method to remove the dust stratification constructional device of stove at present, in test and application.The effect of sonic soot blowing depends primarily on the energy of sound field, and produces bigger acoustic energy as how less airflow kinetic energy, just becomes the major technology key.It is exactly a kind of that the scheme of utilizing airflow kinetic energy to produce acoustic energy in the prior art has Chinese patent " sound dedusting soot blower ", it mainly is made up of supercharging deflection cone, ticker, reflection cavity, spout and resonant cavity, it is to utilize compressed air or steam to be power, excite a plurality of gas whistle, make the gas whistle produce high sound intensity sound wave and air-flow with certain frequency.The major defect of above method and existing technical scheme is that efficient is not high enough, reach to have and blow the needed throughput of grey effect and atmospheric pressure reaches greatly, so that do not have economic benefit, and lose practical value, have again be exactly it be the scheme that constitutes by a plurality of gas whistle, processing is got up also inconvenient.

The purpose of this utility model is to overcome above-mentioned shortcoming, provides a kind of and just can produce required acoustic energy with less flowed energy, and reaching has the efficient ultrasonic soot blower that blows grey effect preferably.

The technical solution adopted in the utility model is that including with acoustic irradiation principal direction is the revolving body formula nozzle and the revolving body formula resonator of rotating shaft, has formed a continuous Hartmann oscillator display, becomes the synthetic whistle, gas responance chamber of a power.The secondary resonance chamber that also has the revolving body formula forms the acoustical power amplifying device of multiple resonance, also comprises the oviduct of a revolving body, forms oviduct impedance conversion and improves matching state to the air radiation sound wave, improves radiation efficiency.The flowed energy that the utility model is imported, it is synthetic that the acoustical generator of process revolving body carries out acoustical power, resonator through revolving body carries out power amplification again, matched horn through revolving body improves to air radiation efficient again, three kinds of results that the major technique measure is comprehensive, improve the efficient of flowed energy conversion acoustic energy, be used as sonic soot blowing, become the efficient ultrasonic soot blower.

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

The utility model is described in further detail below in conjunction with accompanying drawing.

Of the present utility model being characterised in that, it comprises a center T shape pipe 4, pipe position at T shape pipe 4 is with a concentric U-loop 9, making has a nozzle 3 between T shape pipe 4 and the U-loop 9, also be with a concentric shell 11 in the pipe position of T shape pipe 4, the back of U-loop 9, fixing in the back of shell 11 with retaining ring 6.Said center T shape pipe 4 be a hollow, is equipped with the hole 7 for the usefulness of ventilating on the tube wall of the first half of T shape pipe.T shape pipe 4 is an annular with the nozzle 3 that U-loop 9 forms.Have the resonator 2 of an annular on the top of shell 11, a secondary resonator 10 is arranged between shell 11 and the U-loop 9, the degree of depth of secondary resonator 10 is integral multiples of resonator 2 degree of depth.Make the horn mouth 1 of 1 annular in the upper end of the upper end of shell 11 and T shape pipe.

The course of work of the present utility model is, the air-flow of source of the gas is added by air inlet pipe 5, and through air inlet hole 7 enter the buffering air chamber 8, the air-flow of buffering air chamber is sprayed by nozzle 3 warp-wises of annular solid equably, and the acoustic radiation that produces the Hartmann oscillator formula at the resonator place relative with it, wherein a part of sound wave is after producing multiple resonance through secondary resonator 10, in the lump by horn mouth 1 to external radiation, become one and carry out power amplification, again through having improved the ultrasonic wave soot blower of the annular horn mouth 1 of matching state to air radiation by ring resonator.

The utility model compared with prior art has, the phonation efficiency height, and processing and fabricating is simple With economical and practical advantage.

Claims

1, a kind of efficient ultrasonic soot blower, it is characterized in that, it comprises a center T shape pipe 4, pipe position at T shape pipe 4 is with a concentric U-loop 9, make T shape pipe 4 nozzle 3 be arranged with U-loop 9, also be with a concentric shell 11 in the pipe position of T shape pipe 4, the back of U-loop 9, fixing in the back of shell 11 with retaining ring 6.

By the described efficient ultrasonic soot blower of claim 1, it is characterized in that 2, T shape pipe 4 is a hollow, on the tube wall for ventilation usefulness of the first half, be equipped with hole 7.

By the described efficient ultrasonic soot blower of claim 1, it is characterized in that 3, T shape pipe 4 is an annular with the nozzle that U-loop 9 forms.

4, by the described efficient ultrasonic soot blower of claim 1, it is characterized in that, have the resonator 2 of an annular on the top of shell 11, a secondary resonator 10 is arranged between shell 11 and the U-loop 9, the degree of depth of secondary resonator 10 is integral multiples of resonator 2 degree of depth.

5, by the described efficient ultrasonic soot blower of claim 1, it is characterized in that an annular horn mouth 1 is made in the upper end of the upper end of shell 11 and T shape pipe.