CN104654323A - Sonic ash remover capable of realizing airflow cutting based on cam movement - Google Patents
Sonic ash remover capable of realizing airflow cutting based on cam movement Download PDFInfo
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- CN104654323A CN104654323A CN201510011945.8A CN201510011945A CN104654323A CN 104654323 A CN104654323 A CN 104654323A CN 201510011945 A CN201510011945 A CN 201510011945A CN 104654323 A CN104654323 A CN 104654323A
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Abstract
The invention discloses a sonic ash remover capable of realizing airflow cutting based on cam movement. The sonic ash remover comprises a mechanical case and an air chamber, wherein the air chamber is a sound production device of the ash remover; a loudspeaker is connected to one side of an air outlet outside the air chamber, and high-pressure air from an air compressor is connected to one side of an air inlet; the air inlet is communicated with the air outlet through an air passage; a cam is arranged in the mechanical case, and is driven by a driving device to rotate; a guide wheel tangential to the outer circle of the cam is further arranged in the mechanical case, and is connected with a connecting rod through an elastic device; the other end of the connecting rod is connected with a covering piece which reciprocally moves up and down under the action of the connecting rod; high-pressure airflow in the air passage flows out from the outlet side of the air chamber at high speed in a pulsing manner to form sonic waves.
Description
Technical field
The invention discloses a kind of sound wave ash remover realizing air-flow cutting based on camming movement.
Background technology
Along with China's sustain economic develops fast, society's power consumption is also in the increase constantly continued, the boiler main of China's domestic thermal power plant will using coal as combustion section, and various boiler plant is in running, a large amount of small soot particles can be produced because of burning of coal, these minute dust each heat exchanger surface in burner hearth and flue can be gathered, grow up, thus form the phenomenon such as dust deposit in furnace and slagging scorification.And the steam coal of China is of poor quality, dust burdening and sulfur content are all higher, general boilers of power plants coal coal is changeable again, the heat exchange of simultaneously firing burning of coal and flue gas and medium is again a kind of extremely complicated physical and chemical process, this process can be subject to fuel characteristic, heated face structure, the impact of temperature levels and pneumatic condition furnace, thus large degree increased the weight of the fouling phenomenon of boiler heating surface, thermal power station's boiler and the safety and economic operation of other various Industrial Boiler fouling of heating surface slagging scorification to unit have significant impact, light then increase boiler thermal resistance and affect heat-transfer effect, heavy then cause the equipment breakdowns such as booster, impact is normal produces.Often periodically the dust stratification of heating surface, slagging scorification are purged, therefore seem very important.In order to farthest avoid the generation of above-mentioned phenomenon, we can adopt various soot blower to carry out ash disposal to boiler usually, and soot blower is as the indispensable important auxiliary equipment of boiler, and its working condition will directly affect security and the economy of boiler.The soot blower of current domestic employing mainly contains following several:
1, tradition ' touching ' formula soot blower, comprising: high steam ash disposal, high-pressure hydraulic ash disposal, vibration ash disposal.The carrier that this soot blower exports energy is " jet materials " such as steam, air, water, the momentum of this " jet material " is relied on directly to impact the lime-ash on water-cooling wall of power boiler, superheater, reheater, back-end surfaces surface, functionally there are some restriction or defects in the deashing device of tradition " touching " formula, efficiency of actual is lower, even if minority energy user, also be only used in the local surfaces of heat exchanger, overall efficiency is difficult to realize.
2, novel ' involving ' formula soot blower, mainly refers to sound wave ash remover.The carrier that this kind of soot blower exports energy is that " sound wave " utilizes sound field energy to remove the Slag and accumulating ash on boiler heat-exchanger surface, and active force is " interchange " amount.The sound wave ash remover of current domestic use is specifically divided into again ' resonant cavity whistle ', ' resonant plate whistle ', ' siren formula ' according to the difference of generator architecture.' resonant cavity whistle ' and ' resonant plate whistle ' two kinds of whistle formula structure luminous efficiencies are not high, and the stream pressure required for resonant plate whistle is relatively high, and require very strict to the materials and process of diaphragm, the frequency of generation, once determining, just can not change.' siren formula ' sonic generator, has a series of advantages such as occurrence frequency continuously adjustabe, sound pressure level is high, diffraction effect is good, and various infrasonic sounds domestic at present, low-frequency sound wave or title pulse sound ash remover of boiler are all this type substantially.But this soot blower is still faced with many problems, such as, ash when ' selecting flute formula ' acoustic wave ash ejector is in the working clearance in boiler furnace through loudspeaker pour in down a chimney enter blow afloat in make the stifled ash of the modulation rotating disk of acoustic wave ash ejector serious, thus cause the chamber locular wall of chopper wheel and generator to rub seriously, the motor finally causing driving chopper wheel to rotate due to moment excessive and can not start, and then motor damage.Serious threat is brought to the safety and stability of the controlling organization of whole soot blower.
Summary of the invention
The object of the invention is to according to the deficiencies in the prior art, a kind of sound wave ash remover realizing air-flow cutting based on camming movement is provided.
The technical solution used in the present invention is as follows:
A kind of sound wave ash remover realizing air-flow cutting based on camming movement, comprise a mechanical box and an air chamber, air chamber is the sound-producing device of soot blower, side, gas outlet access amplifier outside air chamber, air inlet side fetches the gases at high pressure from air compressor, and be connected by a gas passage between air inlet and gas outlet, in described mechanical box, cam is installed, described cam rotates under the driving of drive unit, and be provided with a directive wheel tangent with cam cylindrical, described directive wheel is connected with a connecting rod by an elastic device, and the other end of connecting rod is connected with shielding plate, described shielding plate is located in air chamber passage, shielding plate pumps under the effect of connecting rod, high pressure draught in gas passage is under the effect of shielding plate, flow out at a high speed from air chamber outlet side in pulsed, form sound wave.
Described drive unit comprises a motor, and described motor is driven by shaft coupling and drags bearing and rotate mutually, described dragging bearing and the inner circle of cam tangent, cam rotates to drag bearing for axle center under the drive of motor.
Described is provided with a circular ball valve in the junction of amplifier and air chamber gas outlet, mainly in order to prevent when soot blower be in run in interval time dust pour in down a chimney and enter air chamber.
Described shielding plate is circular, and its diameter is slightly larger than the diameter of gas passage.
Described air inlet side is also provided with an air cleaner, connects air inlet of air chamber side and the gas pipeline from air compressor, the moisture mainly in filtering gases at high pressure.
Described air chamber and mechanical box are kept apart by dividing plate in the middle of integral type hermetically-sealed construction, described dividing plate leave a circular hole so that connecting rod enters air chamber by mechanical box, circular hole place seal good seal,
A nozzle is all installed in the air inlet of described air chamber and gas outlet.
Described elastic device is spring, and described spring is fixed on leads between driving wheel support and connecting rod rack, thus guarantees that connecting rod can return range minimum point from range peak in time.
Described driving wheel support of leading is connected with the central shaft of directive wheel.
Mechanical box plays protection and dustproof effect; motor is the power set of whole generator; drive shaft coupling; shaft coupling and then band moving cam rotate; lead that driving wheel cylindrical is tangent with cam all the time plays a part mechanical conductive, lead driving wheel simultaneously and move reciprocatingly by leading the driving wheel support drivening rod that to be connected with connecting rod.Lead the connection of driving wheel support and lead driving wheel and connecting rod.
Connecting rod plays connection function and movement conduction effect, and connecting rod one termination leads the circular shielding plate of driving wheel support one termination.
Mechanical box shields; cam, lead driving wheel, lead some frame for movements such as driving wheel support, connecting rod and be all sealed in mechanical box; air chamber is the sound-producing device of soot blower, and side, the gas outlet access amplifier outside air chamber, air inlet side fetches the gases at high pressure from air compressor.
Circular ball valve is arranged on the junction of amplifier and air chamber gas outlet, mainly enters air chamber to prevent the dust when soot blower is in operation interval from pouring in down a chimney.
Circular shielding plate is connected on connecting rod, moves reciprocatingly under the drive of connecting rod in air chamber, thus interruption cutting enters by air inlet the gases at high pressure got rid of by gas outlet, and the interval of cutting steam and speed can be determined by the periphery curve of motor speed and cam.
Operation principle of the present invention is as follows:
Utilize compressed air, air chamber is sprayed into by air inlet of air chamber side nozzle, the circular shielding plate moved reciprocatingly by being driven by frame for movement a series of in mechanical box by the high velocity air of nozzle spirt in air chamber cuts off, therefore high pressure draught flows out from air chamber outlet side nozzle at high speeds in pulsed, form sound wave, the time waveform of its pulse just determines the distribution of acoustic wave energy on fundamental frequency and each order harmonic frequencies.By amplifier, sound wave is imported in burner hearth, due to the comprehensive propagation of sound wave and the high speed periodic swinging of air particle, make the black dirt on stove inner tubal wall depart from heat-exchange surface, or fall because of gravity or be in suspended state, take away with flue gas stream.
Sound wave ash remover of the present invention produces the mechanism of sound wave is in simple terms exactly by the modulation to air flow rate, the DC energy carried by high pressure draught changes the AC energy of sound wave into, and the time waveform of gained sound wave just determines the distribution of energy on fundamental frequency and each order harmonic frequencies.Generally in order to by the concentration of energy of sound wave at comparatively effective fundamental frequency, wish that waveform is better close to sine wave.
The invention has the beneficial effects as follows:
Structure is simple, cost is low, phonation efficiency is high, operating frequency is high and controlled, and motor drag structure is separated with vocal structure, and the globe valve being arranged on amplifier afterbody when soot blower quits work cuts out, prevent the dust from flue, and then prevent dust from entering air chamber, cause the damage of the frame for movements such as motor, substantially increase the service life of device.The frequency of cutting air can be realized by the curve model adjusting cam and then the sound wave frequency sent is modulated.And this plant running and maintenance cost low.
Accompanying drawing explanation
Fig. 1 is the top view of whole soot blower device,
Fig. 2 (a), Fig. 2 (b) are the structure in mechanical box.
In figure, 1 amplifier, 2 globe valves, 3 gas outlets, 4 circular shielding plates, 5 air chambers, 6 air inlets, 7 nozzles of air supply, 8 air cleaners, 9 mechanical boxes, 10 shaft joints, 11 threephase asynchronous machines, 12 drag bearing, 13 guide holes, 14 connecting rods, 15 fixed supports, 16 springs, 17 lead driving wheel, 18 cams, and 19 lead driving wheel support, 20 lead driving wheel bearing, 21 gas passages, 22 dividing plates.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings below.
A kind of sound wave ash remover realizing air-flow cutting based on camming movement, comprise a mechanical box 9 and an air chamber 5, air chamber 5 is the sound-producing device of soot blower, side, gas outlet 3 access amplifier 1 outside air chamber 5, air inlet 6 side fetches the gases at high pressure from air compressor, and be connected by a gas passage 21 between air inlet 6 and gas outlet 3, in described mechanical box 9, cam 18 is installed, described cam 18 rotates under the driving of drive unit, and with cam 18 cylindrical tangent be provided with a directive wheel 17, described directive wheel 17 is connected with a connecting rod 14 by a spring 16, and the other end of connecting rod 14 is connected with circular shielding plate 4, described shielding plate 4 pumps under the effect of connecting rod 14, high pressure draught in gas passage 21 is that pulsed flows out at a high speed from air chamber 5 outlet side, form sound wave.
Described drive unit comprises a threephase asynchronous machine 11, threephase asynchronous machine 11 is driven by a shaft coupling 10 and drags the rotation of bearing 12 phase, described dragging bearing 12 is tangent with the inner circle of cam 18, cam 18 under the drive of threephase asynchronous machine 11 to drag bearing 12 for axle center rotation.
Described an orange being installed, 2 at amplifier 1 and the junction of air chamber 5 gas outlet 3, mainly entering air chamber to prevent the dust when soot blower is in operation interval from pouring in down a chimney.
Described circular shielding plate, its diameter is slightly larger than the diameter of gas passage.
Described air inlet side is also provided with an air cleaner, connects air inlet of air chamber side and the gas pipeline from air compressor, the moisture mainly in filtering gases at high pressure.
Described air chamber and mechanical box 9 are kept apart by dividing plate 22 in the middle of integral type hermetically-sealed construction, described dividing plate 22 leave a circular hole so that connecting rod enters air chamber 5 by mechanical box 9, circular hole place seal good seal.
A nozzle 7 is all installed in the air inlet 6 of described air chamber 5 and gas outlet 3.
Threephase asynchronous machine 11 is the power set of whole generator, drive shaft coupling 10, shaft coupling 10 and then band moving cam 18 rotate, lead driving wheel 17 cylindrical and play a part mechanical conductive with cam 18 is tangent all the time, lead driving wheel 17 simultaneously and move reciprocatingly by leading driving wheel support 19 drivening rod 14 that to be connected with connecting rod 14.Lead driving wheel support 19 connection and lead driving wheel 17 and connecting rod 14.
Connecting rod 14 plays connection function and movement conduction effect, and connecting rod 14 1 termination leads the circular shielding plate 4 of driving wheel support 19, termination.
Mechanical box 9 shields; cam, lead driving wheel, lead some frame for movements such as driving wheel support, connecting rod and be all sealed in mechanical box 9; air chamber is the sound-producing device of soot blower, and side, the gas outlet access amplifier 1 outside air chamber 5, air inlet side fetches the gases at high pressure from air compressor.
Circular ball valve is arranged on the junction of amplifier 1 and air chamber 5 gas outlet, mainly enters air chamber 5 to prevent the dust when soot blower is in operation interval from pouring in down a chimney.
Circular shielding plate 4 is connected on connecting rod 14, move reciprocatingly in air chamber 5 under the drive of connecting rod 14, thus interruption cutting enters by air inlet the gases at high pressure got rid of by gas outlet, the interval of cutting steam and speed can be determined by the periphery curve of motor speed and cam.
Concrete method of work is as follows:
As shown in Fig. 1-Fig. 2 (a), Fig. 2 (b), motor 11 drags shaft coupling 10, and then drive dragging bearing 12 to rotate, such cam 18 will to drag bearing 12 for axle center rotation under the drive of motor, lead driving wheel 17 circumscribed with cam 18 two-wheeled, under the rotation of cam 18, lead the excircle of driving wheel 17 along cam 18 to lead driving wheel bearing 20 for center of circle rotation; Because the center of rotation 12 of cam 18 is not or not the center of circle of cam 18, also move reciprocatingly up and down while moving in a circle along cam 18 so lead driving wheel 17; Namely, the peak that driving wheel 20 is in whole reciprocating motion range is led when cam 18 moves to when its center of circle is in and drags directly over bearing 12, along with the position of leading driving wheel 17 that is rotated further of cam 18 moves down gradually, when cam 18 moves to its center of circle when dragging immediately below bearing 12, lead the minimum point that driving wheel 17 is in whole reciprocating motion range.
Lead driving wheel 17 drivening rod about 14 while constantly moving reciprocatingly to move reciprocatingly, circular shielding plate 4 is fixed on the top of connecting rod 14.Connecting rod rack 15 is fixed on the inwall of mechanical box 9, connecting rod rack 15 leaves connecting rod guide hole 13, its diameter is slightly larger than the tangent plane diameter of connecting rod 14, and spring 16 is fixed on leads between driving wheel support 19 and connecting rod rack 15, thus guarantees that connecting rod 14 can return range minimum point from range peak in time.
Circular shielding plate 4 linearly moves reciprocatingly under the drive of connecting rod 14 in the middle of air inlet of air chamber 7 with air chamber gas outlet 3, when circular shielding plate 4 is in same straight line with air inlet of air chamber 7 and air chamber gas outlet 3, the air-flow flowed out at a high speed by air inlet of air chamber 7 just cuts off by circular shielding plate 4, when circular shielding plate 4 is in above or below air inlet of air chamber 7 and gas outlet 3, the gas of high speed circulation recovers again circulation.Therefore along with circular shielding plate 4 constantly moves back and forth, high pressure draught is that pulsed exports the outflow at a high speed of 3 side nozzles from air chamber, forms sound wave.Just be in immediately below air inlet of air chamber 7 and gas outlet 3 intermediate gaps 21 when leading circular shielding plate 4 when driving wheel 17 is in the minimum point of whole reciprocating motion range, just be in directly over air inlet of air chamber 7 and gas outlet 3 intermediate gaps 21 when leading circular shielding plate 4 when driving wheel 17 is in the peak of whole reciprocating motion range, thus realize once moving back and forth cutting twice gas.When soot blower quits work, globe valve 2 is in closure state and enters soot blower inside to prevent the dust in boiler.Air chamber 5 and mechanical box 9 adopt integral structure to avoid gas to leak outside, separate with dust seal dividing plate 22 between air chamber 5 and mechanical box 9 and achieve acoustical generator and mechanical part is separated, the hermetic oil seal with lubrication is adopted to encapsulate between connecting rod guide hole 13 simultaneously on dividing plate 22 and connecting rod 14, in order to avoid dust blocking connecting rod, ensure that the sufficient lubrication between connecting rod 14 and connecting rod guide hole 13, and farthest avoid gas to be revealed in mechanical box 9 by air chamber.Air cleaner 8 filters out the moisture in gases at high pressure, is that the gas entered in air chamber keeps dry as far as possible.Nozzle of air supply 7 can make the flow velocity of the gases at high pressure entering air chamber 5 greatly increase thus reach better sounding effect.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. one kind realizes the sound wave ash remover of air-flow cutting based on camming movement, it is characterized in that: comprise a mechanical box and an air chamber, air chamber is the sound-producing device of soot blower, side, gas outlet access amplifier outside air chamber, air inlet side fetches the gases at high pressure from air compressor, and be connected by a gas passage between air inlet and gas outlet, in described mechanical box, cam is installed, described cam rotates under the driving of drive unit, and be provided with a directive wheel tangent with cam cylindrical, described directive wheel is connected with a connecting rod by an elastic device, and the other end of connecting rod is connected with shielding plate, described shielding plate is located in air chamber passage, shielding plate pumps under the effect of connecting rod, high pressure draught in gas passage is under the effect of shielding plate, flow out at a high speed from air chamber outlet side in pulsed, form sound wave.
2. as claimed in claim 1 a kind of based on camming movement realize air-flow cutting sound wave ash remover, it is characterized in that: described drive unit comprises a motor, described motor drives dragging bearing to rotate mutually by a shaft coupling, described dragging bearing and the inner circle of cam tangent, cam rotates to drag bearing for axle center under the drive of motor.
3. a kind of sound wave ash remover realizing air-flow cutting based on camming movement as claimed in claim 1, is characterized in that: the described junction in amplifier and air chamber gas outlet be provided with one prevent soot blower to be in when running in interval dust pours in down a chimney the circular ball valve entering air chamber.
4. a kind of sound wave ash remover realizing air-flow cutting based on camming movement as claimed in claim 1, is characterized in that: described shielding plate is for circular, and its diameter is slightly larger than the diameter of gas passage.
5. a kind of sound wave ash remover realizing air-flow cutting based on camming movement as claimed in claim 1, is characterized in that: described air inlet side is also provided with an air cleaner, connects air inlet of air chamber side and the gas pipeline from air compressor.
6. as claimed in claim 1 a kind of based on camming movement realize air-flow cutting sound wave ash remover, it is characterized in that: described air chamber and mechanical box are kept apart by dividing plate in the middle of integral type hermetically-sealed construction, described dividing plate leaves a circular hole so that connecting rod enters air chamber by mechanical box, circular hole place seal good seal.
7. as claimed in claim 1 a kind of based on camming movement realize air-flow cutting sound wave ash remover, it is characterized in that: a nozzle is all installed in the air inlet of described air chamber and gas outlet.
8. as claimed in claim 1 a kind of based on camming movement realize air-flow cutting sound wave ash remover, it is characterized in that: on the inwall of mechanical box, fix a connecting rod rack, connecting rod rack leaves connecting rod guide hole, its diameter is slightly larger than the tangent plane diameter of connecting rod, and connecting rod is connected with elastic device through connecting rod rack.
9. as claimed in claim 1 a kind of based on camming movement realize air-flow cutting sound wave ash remover, it is characterized in that: described elastic device is spring, described spring is fixed on leads between driving wheel support and connecting rod rack, thus guarantees that connecting rod can return range minimum point from range peak in time.
10. as claimed in claim 1 a kind of based on camming movement realize air-flow cutting sound wave ash remover, it is characterized in that: described driving wheel support of leading is connected with the central shaft of directive wheel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510011945.8A CN104654323B (en) | 2015-01-09 | 2015-01-09 | Sonic ash remover capable of realizing airflow cutting based on cam movement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510011945.8A CN104654323B (en) | 2015-01-09 | 2015-01-09 | Sonic ash remover capable of realizing airflow cutting based on cam movement |
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| CN104654323A true CN104654323A (en) | 2015-05-27 |
| CN104654323B CN104654323B (en) | 2017-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510011945.8A Expired - Fee Related CN104654323B (en) | 2015-01-09 | 2015-01-09 | Sonic ash remover capable of realizing airflow cutting based on cam movement |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081448A (en) * | 2019-05-20 | 2019-08-02 | 天津国电津能滨海热电有限公司 | Boiler furnace intelligent sootblowing |
| CN113653621A (en) * | 2021-08-12 | 2021-11-16 | 安徽斯的得电力工程有限公司 | Impact air pump for coking of incinerator |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138251Y (en) * | 1992-09-29 | 1993-07-14 | 东北工学院 | High sound intensity ash removing and coke cleaning apparatus |
| CN2248294Y (en) * | 1996-02-02 | 1997-02-26 | 李新民 | Link rod type low-frequency sonic deashing device |
| CN1928434A (en) * | 2006-09-22 | 2007-03-14 | 聂道静 | Rotary valve type sonic blowing ash device |
| US20100275857A1 (en) * | 2007-09-04 | 2010-11-04 | Clyde Bergemann Gmbh | Device for cleaning a boiler of a combustor, and method for the operation thereof |
| CN203605245U (en) * | 2013-12-20 | 2014-05-21 | 北京德融恒通环境科技有限公司 | Dustproof plug sound wave efficient ash separator dust remover |
-
2015
- 2015-01-09 CN CN201510011945.8A patent/CN104654323B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2138251Y (en) * | 1992-09-29 | 1993-07-14 | 东北工学院 | High sound intensity ash removing and coke cleaning apparatus |
| CN2248294Y (en) * | 1996-02-02 | 1997-02-26 | 李新民 | Link rod type low-frequency sonic deashing device |
| CN1928434A (en) * | 2006-09-22 | 2007-03-14 | 聂道静 | Rotary valve type sonic blowing ash device |
| US20100275857A1 (en) * | 2007-09-04 | 2010-11-04 | Clyde Bergemann Gmbh | Device for cleaning a boiler of a combustor, and method for the operation thereof |
| CN203605245U (en) * | 2013-12-20 | 2014-05-21 | 北京德融恒通环境科技有限公司 | Dustproof plug sound wave efficient ash separator dust remover |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110081448A (en) * | 2019-05-20 | 2019-08-02 | 天津国电津能滨海热电有限公司 | Boiler furnace intelligent sootblowing |
| CN113653621A (en) * | 2021-08-12 | 2021-11-16 | 安徽斯的得电力工程有限公司 | Impact air pump for coking of incinerator |
| CN113653621B (en) * | 2021-08-12 | 2023-02-17 | 安徽斯的得电力工程有限公司 | Impact air pump for coking of incinerator |
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| CN104654323B (en) | 2017-01-25 |
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