>Product Introduction
The structure of a locomotive air horn usually consists of three parts: a base, a sounding unit and a horn. The base is used to fix the sound unit, the horn is connected with the sound unit, and the sound unit consists of two air cavities and vibrators.
>Technical Parameter
According to the conformity of standard(TB/T 3051.2-2016 “Electric Pipes and Air Horn for Locomotives and EMUS Part II: Air Horn“, the SKC improve the air horn of EMUS .
Through simulation, modal analysis method is adopted to optimize the size of vibration plate and barrel to achieve acoustic resonance at 622Hz. The simulation results show that the sound pressure level can reach 163 dB at 5 m when the excitation is 1 MPa, which is 24 dB higher than that without the vibration optimization. At 0.6 MPa, the SPL at 5 m is about 157 dB, which is about 6 dB lower than that at 1 MPa.
>Application Scenarios
1. Acoustic Soot Blowing
Acoustic soot blowing is a method to remove ash and coke on the surface of boiler heat exchanger by means of acoustic energy. Acoustic soot blowing technology includes the design, production, installation and use of acoustic microphone and controller.
a. Flute Blower
The working principle of the flute soot blower is to use the motor to drive a rotating valve, repeatedly open and close the nozzle of the airflow, so that the airflow out of the intermittent sound wave.
b. Diaphragm Soot Blower
Diaphragm sonic sootblower with compressed air as power source, the diaphragm in the generator cavity body vibration, produce certain the low-frequency, high-energy sound waves, through the amplification tube in air cleaning equipment in the resonant transmission, ACTS on the grey dust particles on the surface of the object, make its produce acoustic fatigue and spalling, achieve the goal of removing dust.
2. Acoustic Agglomeration And Whitening
At present, wet desulphurization is the main cause of white smoke plume in domestic thermal power plants. The wet smoke discharged from the chimney is mixed with the cold air in the environment. In the process of cooling, the water vapor contained in it is saturated and condensed. The condensed water droplets refract and scatter the light, making the smoke plume white or gray, which is called "wet smoke plume", commonly known as "white smoke".
