CN201285058Y

CN201285058Y - Rotating excitation type sound generator

Info

Publication number: CN201285058Y
Application number: CNU2008201905720U
Authority: CN
Inventors: 聂道静
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-08-27
Filing date: 2008-08-27
Publication date: 2009-08-05
Anticipated expiration: 2018-08-27

Abstract

A rotary shock excitation type sound wave generator belongs to ashing equipment and mainly comprises a case, a rotary wheel, a resonant cavity, a throat pipe, a cavity resonator, a spring and quality shock excitation system and a horn. An air inlet pipe (5) is communicated with the resonant cavity (4); the throat pipe (8) is communicated with the resonant cavity (4) and the cavity resonator (13); and two ends of the resonant cavity (4) are provided with airtight seal rings (6). In the rotary shock excitation type sound wave generator, high pressure air flow enters the resonant cavity from the air inlet pipe and forms pressure pulse under the modulation of the rotary wheel in rotating at high speed, pressure pulse entered from the throat pipe is consistent with the vibration frequency of the spring and quality shock excitation system, resonance is generated and enhanced and then enters the horn to generate resonance with the horn to form high-strength sound wave sent to a boiler. The structure of the generator is different from the structure of the prior sound wave soot blower, and the problem that the prior sound wave soot blower has low power and high fault rate is solved. When running under severe condition of the boiler, the rotary shock excitation type sound wave generator cannot generate the fault such as abrasion, jamming, and the like, and has long service life and favorable soot blowing effect.

Description

Rotation excitation type sonic generator

Technical field

The utility model relates to a kind of soot blower, particularly a kind of rotation excitation type sonic generator that adopts ultrasonic power to finish boiler, waste-heat oven and heating furnace deashing.

Background technology

Various boilers, waste-heat oven and heating furnace be in when operation, dust stratification to some extent all on heat-transfer surface.Because thermal conductivity ratio steel much smaller of ash, can influence the heat exchange efficiency of boiler as untimely removing, go back the security of operation of entail dangers to boiler when dust stratification is serious.Traditional deashing is to utilize steam soot blowing, and the dust stratification face is directly purged.This to blow grey effect bad, and the exchange hot side has wearing and tearing, blows ash and has the dead angle.And existing ultrasonic wave soot blower power is little, the difficult problem that fault rate is higher, as the siren formula enter inside as impurity such as oil, water, ash, slags, very easily bite can not rotate it at a high speed; The diaphragm of diaphragm type very easily damages under the high frequency judder, and service life is short; Whistle formula and resonance cavate need whole the insertion in the stove, thus very easily burn out, and also frequency is high too, belongs to the ultrasonic whistle.

Summary of the invention

The purpose of this utility model provides a kind of with in the high-intensity sound wave importing stove, form the sound field of high sound pressure level at furnace inner space, acoustic pressure heat exchanging area ash alternately draws (negative pressure), presses (malleation), dust stratification fatigue is come off, take away with flue gas stream, it is effective to blow ash, and the exchange hot side does not have wearing and tearing, does not have the rotation excitation type sonic generator that blows grey dead angle.

The purpose of this utility model is achieved in that a kind of rotation excitation type sonic generator, comprise shell, end cap is equipped with at the two ends of shell, air inlet pipe and trunnion are housed on the opening of shell, air inlet pipe and resonant cavity UNICOM, trunnion and resonant cavity resonant cavity UNICOM, airtight circle is equipped with at the resonant cavity two ends, and bearing also is housed in the shell, runner is installed on the bearing, on the axle of runner belt pulley is housed, the circumference of runner is provided with a plurality of flutings, and the elastic oscillating system of being made up of spring and mass is housed in the resonator, spring is located by supporting seat, its other end withstands slide bar and moves up and down, and an end of slide bar is equipped with mass, and conduit and resonator and loudspeaker link.Described fluting is positive groove or skewed slot.

Rotation excitation type sonic generator provided by the utility model, high pressure draught enters resonant cavity from air inlet pipe, under the runner modulation of rotation at a high speed, form pressure pulse, consistent from the pressure pulse that trunnion enters with the vibration frequency of spring and quality, produce resonance, strengthened, enter in the loudspeaker, empathizing with loudspeaker forms the high strength sound wave and sends in the stove again.The structure of this soot blower is different from existing acoustic wave ash ejector structure fully, as siren formula, diaphragm type, whistle formula with and the cavate that shakes, it is little to have solved existing acoustic wave ash ejector power, the difficult problem that fault rate is high.Under the adverse circumstances of boiler, move, can not wear and tear, faults such as bite, long service life has and well blows grey effect.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

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

Fig. 2 is Figure 1A-A cutaway view.

The specific embodiment

The utility model adopts following structure: a kind of rotation excitation type sonic generator, comprise shell 1, end cap 3 is equipped with at the two ends of shell 1, air inlet pipe 5 and trunnion 8 are housed on the opening of shell 1, air inlet pipe 5 and resonant cavity 4 UNICOMs, trunnion 8 and resonant cavity 4 resonant cavity 13 UNICOMs, airtight circle 6 is equipped with at resonant cavity 4 two ends, bearing 17 also is housed in the shell 1, runner 2 is installed on the bearing 17, on the axle of runner 2 belt pulley 7 is housed, the circumference of runner 2 is provided with a plurality of flutings 14, and the elastic oscillating system of being made up of spring 9 and mass 10 is housed in the resonator 13, spring 9 is by supporting seat 11 location, its other end withstands slide bar 12 and moves up and down, and an end of slide bar 12 is equipped with mass 10, and conduit 15 links with resonator 13 and loudspeaker 16.Described fluting 14 is positive groove or skewed slot.

The operation principle of this device is as follows: its course of work is that high pressure draught enters in the resonant cavity 4 from air inlet pipe 5, the airtight circle 6 at resonant cavity 4 two ends can guarantee the rate of pressurization of resonant cavity, belt pulley 2 drives runner 2 high speed rotating, and runner 2 is provided with fluting 14, under runner 2 modulation of rotation at a high speed, gas responance in the excitation resonance chamber 4, and the formation pressure pulse, pulse frequency is with rotation speed change, pressure pulse enters resonator 13 by trunnion 8, when the intrinsic frequency of pulse frequency and the vibrational system of chamber inner spring 9 and 10 compositions of quality is consistent, pressure pulse is excited and strengthens.The pressure pulse that is reinforced enters loudspeaker 16 by conduit 15, when the frequency of a certain intrinsic frequency of gas column in the loudspeaker 16 and pressure pulse is consistent, then vibes and forms sound wave, goes out to the horn mouth external radiation.When horn mouth was contained on the furnace wall and aims in the stove, just the high strength sound wave is sent into and blown grey operation in the stove, after testing, this device can convert high pressure draught to〉sound wave of 150dB.

Claims

1, a kind of rotation excitation type sonic generator, comprise shell (1), end cap (3) is equipped with at the two ends of shell (1), air inlet pipe (5) and trunnion (8) are housed on the opening of shell (1), it is characterized in that: air inlet pipe (5) and resonant cavity (4) UNICOM, trunnion (8) and resonant cavity (4) resonant cavity (13) UNICOM, airtight circle (6) is equipped with at resonant cavity (4) two ends, bearing (17) also is housed in the shell (1), runner (2) is installed on the bearing (17), on the axle of runner (2) belt pulley (7) is housed, the circumference of runner (2) is provided with a plurality of flutings (14), the elastic oscillating system of being made up of spring (9) and mass (10) is housed in the resonator (13), spring (9) is located by supporting seat (11), its other end withstands slide bar (12) and moves up and down, and an end of slide bar (12) is equipped with mass (10), and conduit (15) links with resonator (13) and loudspeaker (16).

2, rotation excitation type sonic generator according to claim 1 is characterized in that: described fluting (14) is positive groove or skewed slot.