[Guess what Haichuan Equipment] It’s like a bent pipe number, the trick is at the end

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Is it similar to the principle of [water jet vacuum pump]?

Is it an intermittent purge device?

1.1 Sonic soot blowing is a boiler soot blowing technology developed in recent years. The principle is to use compressed air to impact the sound-generating device to generate sound waves of different frequencies. The sound waves enter the furnace and stir the ash particles in the flue gas, causing the ash particles to oscillate synchronously, making it difficult for the tiny ash particles to approach and settle on the heating surface. It also periodically changes the longitudinal pressure gradient in the ash accumulation boundary layer, which may cause the ash accumulation layer to be damaged and peel off the heating surface. 1.2 The sound pressure of soot blowing sound waves is generally difficult to exceed 150dB, which is only equivalent to an overpressure of 20kpa. Because the overpressure is too low and the energy is too small, the effect of boiler ash removal is not ideal. Generally, it only has a certain effect on slight dry pine ash accumulation. In most cases, it has basically no effect. It is even more ineffective against high-temperature slagging and low-temperature plate ash formation. Although the sonic soot blower has a certain anti-dust accumulation effect on dust particles below 1 μm, this requires the sonic soot blower to run continuously for a long time. In fact, the sonic soot blower only runs for about 0.5 to 1 hour per soot blowing operation, so it has no practical effect on preventing dust accumulation.

There are two types of sonic soot blowers: dual-tone dual-frequency sonic soot blowers and single-tone single-frequency sonic soot blowers. Their sounding principles are different. The dual-tone dual-frequency sonic soot blower is a high-pitched high-frequency sound wave generated by compressed air flowing through a high-pitched and high-frequency sounding whistle and a low-low-frequency sound wave formed by the reflection of a bass-low-frequency sound wave generating cover. It is coupled and superimposed to produce a dual-tone dual-band band frequency sound wave.； The single-tone single-frequency sonic soot blower uses compressed air or steam to flow through a metal diaphragm, flute, sound resonant cavity or other sound wave generating components to produce a strong sound. ； Sound waves propagate in the flue or furnace, causing the ash particles in the flue gas to vibrate synchronously. Under the repeated cumulative effects of sound wave vibration and fatigue, it is difficult for tiny ash particles to approach the ash accumulation surface, and the dust deposited on the heated surface is destroyed and peeled off, thereby achieving the purpose of ash cleaning.