CN219550545U - Anti-soot blowing system for acoustic wave soot blower - Google Patents
Anti-soot blowing system for acoustic wave soot blower Download PDFInfo
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- CN219550545U CN219550545U CN202223533504.9U CN202223533504U CN219550545U CN 219550545 U CN219550545 U CN 219550545U CN 202223533504 U CN202223533504 U CN 202223533504U CN 219550545 U CN219550545 U CN 219550545U
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- soot blower
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- acoustic wave
- control cabinet
- acoustic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Soundproofing, Sound Blocking, And Sound Damping (AREA)
Abstract
The utility model discloses a back blowing ash system for an acoustic wave soot blower, which comprises an acoustic duct and a control cabinet, wherein the acoustic duct is arranged at the front end of the acoustic wave soot blower and is in a horn shape, the control cabinet is arranged beside the acoustic wave soot blower, a gas distribution ring is arranged in the middle of the outer side of the acoustic duct, a plurality of blowing pipes are uniformly arranged on the inner side of the gas distribution ring, one end of each blowing pipe is communicated with the gas distribution ring, and the other end of each blowing pipe extends into the acoustic duct and is obliquely arranged towards the large opening end of the acoustic duct; the outer side of the gas distribution ring is connected with a gas supply main pipe, a solenoid valve is arranged on the gas supply main pipe, and the solenoid valve is in signal connection with the control cabinet. And an acoustic wave sensor is further stuck to the outer side of the sound guide pipe, and the acoustic wave sensor is in signal connection with the control cabinet. When the sound wave soot blower is used, when the detected sound wave frequency spectrum is inconsistent with the sound wave frequency spectrum generated by normal operation of the sound wave soot blower, the electromagnetic valve can be controlled to be opened through the control cabinet to purge and clean the sound guide pipe, so that the working efficiency and the automation degree of the sound wave soot blower are greatly improved.
Description
Technical Field
The utility model relates to an acoustic wave soot blower, in particular to a back-blowing system for an acoustic wave soot blower.
Background
At present, various boilers at home and abroad are subjected to online ash removal by adopting a great deal of acoustic soot blowers so as to improve the thermal efficiency of a heating surface of the boiler and reduce the emission of nitrified gas. The acoustic wave ash blower is a new ash-cleaning technology developed in the middle and late 90 s, and is characterized by that compressed air is converted into high-power acoustic wave (a pressure wave propagated in space medium (gas) in the form of dense wave) and fed into the furnace, when the deposited ash on the heated surface is repeatedly pulled and pressed by the dense wave which is alternatively changed in a certain frequency, the deposited ash can be loosened due to fatigue, and fallen down to ash hopper under the action of gravity, and can be taken away with smoke flow. In the use process of the acoustic wave soot blower, dust can accumulate and adhere to the inner wall of a horn tube at the front end of the acoustic wave soot blower, and the normal operation of the acoustic wave soot blower is seriously influenced. The sound wave soot blower can work stably and reliably, and is directly related to the thermal efficiency of the boiler and the dust content of gas emission.
Disclosure of Invention
The utility model aims to provide an anti-soot blowing system for an acoustic wave soot blower, which is used for solving the problem of soot deposition in a horn-shaped acoustic duct of the acoustic wave soot blower in use.
The utility model adopts the following technical scheme:
the back ash blowing system for the sound wave soot blower comprises a sound guide pipe and a control cabinet, wherein the sound guide pipe is arranged at the front end of the sound wave soot blower and is in a horn shape, the control cabinet is arranged beside the sound wave soot blower, a gas distribution ring is arranged in the middle of the outer side of the sound guide pipe, a plurality of purge pipes are uniformly arranged on the inner side of the gas distribution ring, one end of each purge pipe is communicated with the gas distribution ring, and the other end of each purge pipe extends into the sound guide pipe and is obliquely arranged towards the large opening end of the sound guide pipe; the outer side of the gas distribution ring is connected with a gas supply main pipe, a solenoid valve is arranged on the gas supply main pipe, and the solenoid valve is in signal connection with the control cabinet. And an acoustic wave sensor is further stuck to the outer side of the sound guide pipe, and the acoustic wave sensor is in signal connection with the control cabinet.
The control cabinet is internally provided with a PLC controller, a signal amplifier, an analog-to-digital converter and a signal comparator, the sound wave sensor is connected with the input end of the signal amplifier, the output end of the signal amplifier is connected with the input end of the analog-to-digital converter, the output end of the analog-to-digital converter is connected with the input end of the signal comparator, the output end of the signal comparator is connected with the input end of the PLC controller, and the output end of the PLC controller is connected with the electromagnetic valve.
The utility model has the following beneficial effects:
1. compressed air is injected into the sound guide pipe through the air supply main pipe, the air distribution ring and the blowing pipe, and the compressed air is utilized to forwardly rotate for blowing, so that the gas blowing pressure is increased, dust adsorbed in the sound guide pipe can be scraped off, the dust enters the boiler flue gas conveying pipeline for being discharged, the occurrence of dust accumulation in the sound guide pipe is reduced, and the normal operation of the acoustic soot blower is ensured.
2. The sound wave frequency generated by the sound wave soot blower is detected in real time by the sound wave sensor, the sound wave signal is converted into an electric signal and transmitted to the control cabinet for data analysis, and when the detected sound wave frequency spectrum is inconsistent with the sound wave frequency spectrum generated by the normal operation of the sound wave soot blower, the electromagnetic valve can be controlled to be opened by the control cabinet to purge and clean the sound guide pipe, so that the working efficiency and the automation degree of the sound wave soot blower are greatly improved.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a position profile of the purge tube of FIG. 1;
in the figure, a 1-sound guide pipe, a 2-gas distribution ring, a 3-purge pipe, a 4-gas supply main pipe, a 5-electromagnetic valve, a 6-control cabinet, a 7-sound wave sensor, an 8-PLC controller, a 9-signal amplifier, a 10-analog-to-digital converter and an 11-signal comparator are arranged.
Detailed Description
The utility model is further explained below with reference to the drawings.
As shown in fig. 1, a back blowing ash system for an acoustic wave soot blower comprises an acoustic duct 1 arranged at the front end of the acoustic wave soot blower and a control cabinet 6 arranged beside the acoustic wave soot blower, wherein a gas distribution ring 2 is arranged in the middle of the outer side of the acoustic duct 1, a plurality of blowing pipes 3 are uniformly arranged on the inner side of the gas distribution ring 2, one ends of the blowing pipes 3 are communicated with the gas distribution ring 2, the other ends of the blowing pipes extend into the acoustic duct 1 and are in sealing connection with the side wall of the acoustic duct 1, and one ends of pipe orifices of the blowing pipes 3 are obliquely arranged towards the large opening end of the acoustic duct 1; inclination angle: the included angle alpha between the axis of the purging pipe 3 and the axis of the sound guide pipe 1 is 35-45 degrees. The outside of the gas distribution ring 2 is connected with a gas supply main pipe 4 connected with an external compressed air source, a solenoid valve 5 is arranged on the gas supply main pipe 4, and the solenoid valve 5 is in signal connection with a control cabinet 6. The outside of the sound guide tube 1 is also sealed and stuck with an acoustic wave sensor 7, and the acoustic wave sensor 7 is in signal connection with the control cabinet 6.
As shown in fig. 2, the number of purge pipes 3 is 8, and the purge pipes are distributed in a convergent manner counterclockwise or clockwise along the circumferential direction of the sound tube 1. When the acoustic wave soot blower is used, air flow blows into the acoustic wave guide tube at a certain inclination angle, and is limited by the inner space, the air flow advances in a spiral shape to scrape off deposited dust attached to the inner wall of the acoustic wave guide tube 1, so that the cleaning and overhauling time of deposited dust in the acoustic wave soot blower is shortened, and the acoustic wave soot blower is ensured not to work normally.
The control cabinet 6 is internally provided with a PLC controller 8, a signal amplifier 9, an analog-to-digital converter 10 and a signal comparator 11, the sound wave sensor 7 is connected with the input end of the signal amplifier 9, the output end of the signal amplifier 9 is connected with the input end of the analog-to-digital converter 10, the output end of the analog-to-digital converter 10 is connected with the input end 11 of the signal comparator, the output end of the signal comparator 11 is connected with the input end of the PLC controller 8, and the output end of the PLC controller 8 is connected with the electromagnetic valve 5.
The working process of the utility model is as follows:
the sound wave frequency of the normal sound production of the boiler out-of-stock sound wave soot blower is 75HZ, the decibel is 147dB, the sound is low, and the sound wave frequency can be obviously changed (more or less) once the sound wave soot blower horn section deposits dust, so that the sound wave frequency change can be used for monitoring whether the sound wave soot blower horn section deposits dust. Firstly, acquiring a sound wave frequency spectrum of the sound wave soot blower during normal operation by utilizing a sound wave sensor 7 and recording the sound wave frequency spectrum in a signal comparator 11 as a set value, then acquiring sound wave signals by utilizing the sound wave sensor 7 at certain intervals when the sound wave soot blower operates, amplifying the sound wave signals by utilizing a signal amplifier 9, processing the sound wave signals into a direct current component by utilizing an analog-to-digital converter 10, and sending the direct current component into the signal comparator 11 to be compared with the set value, wherein if the signals are consistent, the PLC 8 does not act; if the signals are inconsistent, the PLC 8 turns on the control circuit of the electromagnetic valve 5 to open the electromagnetic valve 5 to purge the sound guide pipe 1 of the sound wave soot blower by using compressed air, wherein the sound wave soot blower is indicated to have accumulated dust. Meanwhile, the system can work with DCS or alarms and the like in a matched manner, and the field automation degree is improved.
In the above operation, the signal amplifier 9 selects AMP04F, the analog-to-digital converter 10 selects AD536A, and the signal comparator 11 selects LM311N. The remaining portions, not described in detail, employ equivalents of the prior art to accomplish the same function or purpose.
Claims (6)
1. The utility model provides a sound wave soot blower is with back blowing ash system which characterized in that: the sound tube type sound tube soot blower comprises a sound tube (1) and a control cabinet (6), wherein the sound tube (1) is arranged at the front end of the sound tube soot blower and is in a horn shape, the control cabinet (6) is arranged beside the sound tube soot blower, a gas distribution ring (2) is arranged in the middle of the outer side of the sound tube (1), a plurality of purging tubes (3) are uniformly arranged on the inner side of the gas distribution ring (2), one ends of the purging tubes (3) are communicated with the gas distribution ring (2), and the other ends of the purging tubes extend into the sound tube (1) and are obliquely arranged towards the large opening end of the sound tube (1); the outside of the gas distribution ring (2) is connected with a gas supply main pipe (4), a solenoid valve (5) is arranged on the gas supply main pipe (4), and the solenoid valve (5) is in signal connection with a control cabinet (6).
2. The back blowing ash system for an acoustic wave soot blower according to claim 1, wherein: an acoustic wave sensor (7) is further stuck to the outer side of the sound guide pipe (1), and the acoustic wave sensor (7) is in signal connection with the control cabinet (6).
3. The back blowing ash system for the acoustic wave soot blower according to claim 2, wherein: the control cabinet (6) is internally provided with a PLC (programmable logic controller) controller (8), a signal amplifier (9), an analog-to-digital converter (10) and a signal comparator (11), the sound wave sensor (7) is connected with the input end of the signal amplifier (9), the output end of the signal amplifier (9) is connected with the input end of the analog-to-digital converter (10), the output end of the analog-to-digital converter (10) is connected with the input end of the signal comparator (11), the output end of the signal comparator (11) is connected with the input end of the PLC controller (8), and the output end of the PLC controller (8) is connected with the electromagnetic valve (5).
4. The back blowing ash system for an acoustic wave soot blower according to claim 1, wherein: the number of the purging pipes (3) is 6-8, and the purging pipes are distributed anticlockwise or clockwise along the circumferential direction of the sound guide pipe (1).
5. The back blowing ash system for an acoustic wave soot blower according to claim 1, wherein: the included angle between the axis of the purging pipe (3) and the axis of the sound guide pipe (1) is 35-45 degrees.
6. The back blowing ash system for an acoustic wave soot blower according to claim 1, wherein: the purging pipe (3) is connected with the side wall of the sound guide pipe (1) in a sealing way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223533504.9U CN219550545U (en) | 2022-12-29 | 2022-12-29 | Anti-soot blowing system for acoustic wave soot blower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223533504.9U CN219550545U (en) | 2022-12-29 | 2022-12-29 | Anti-soot blowing system for acoustic wave soot blower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219550545U true CN219550545U (en) | 2023-08-18 |
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ID=87700540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223533504.9U Active CN219550545U (en) | 2022-12-29 | 2022-12-29 | Anti-soot blowing system for acoustic wave soot blower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219550545U (en) |
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2022
- 2022-12-29 CN CN202223533504.9U patent/CN219550545U/en active Active
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