Trumpet for acoustic wave sootblower

Abstract

The invention provides a trumpet for an acoustic wave sootblower, which enables acoustic waves to not only meet expected acoustical power and frequency response requirements but also avoid sudden change of acoustic impedance, enables acoustic waves to have relatively good response in medium and low frequency bands, completely meets the requirement of the acoustic wave sootblower on 50 to 300 HZ frequency, and is simple in structure, low in cost and convenient to construct. The trumpet comprises a trumpet opening, wherein the trumpet opening comprises a large end and a small end; the small end of the trumpet opening comprises a trumpet outer shell and a trumpet inner shell; a 10 mm clearance is arranged between the trumpet inner shell and the trumpet outer shell; the clearance is filled with river sand adopted as a damping and sound insulation material; a small end inlet flange is mounted at a small end inlet part of the trumpet opening; a small end outlet flange is mounted at a small end outlet part of the trumpet opening; and a large end inlet flange is mounted at a large end inlet part of the trumpet opening.

Description

technical field [0001] The invention relates to a horn, in particular to a horn for a sonic soot blower. Background technique [0002] In the prior art, boilers are widely used in various industries. During the working process of the boiler, the ash accumulation and coking of the heater and heat exchanger will affect the heat transfer efficiency of the heating surface, which will increase the boiler exhaust gas temperature and cause the thermal efficiency of the boiler to decrease. Theoretical calculation and operation experience show that the boiler exhaust gas temperature When the temperature rises by 20°C, the thermal efficiency of the boiler will drop by 1%. What is also serious is that when the ash accumulation and coking reach a certain level, it will cause corrosion of the heating surface of the boiler and unexpected shutdown of the boiler, resulting in major economic losses. For a long time, the problem of ash removal on the heating surface of the boiler has always ...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, there is still a lack of a method that enables the sound wave to achieve the expected sound power and frequency response requirements, and avoids the sudden change of the acoustic impedance, so that the sound wave has a better response in the middle and low frequency bands, which is completely in line with the sound wave soot blower. The horn used for sonic sootblowers requires a frequency of 50~300HZ and is simple in structure, low in cost and convenient in construction.

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