A combustion excitation device for W-type flame boiler

Abstract

The invention belongs to the technical field of efficient and clean combustion of boilers, and particularly relates to a combustion excitation device for a W-type flame boiler, comprising a W-type boiler body and a sound wave excitation mechanism; the sound wave excitation mechanism is installed on the furnace wall of the W-type boiler body, and comprises a sound wave injection component and a horn adjustment component; the sound outlet of the sound wave generator is connected with a sound waveguide, and the pipe mouth of the sound waveguide is connected with an expansion horn with an adjustable horn mouth through an elastic connecting ring, and the horn mouth of the expansion horn is sealed and connected to the furnace wall of the W-type boiler body through an elastic sealing ring; the horn adjustment component is arranged on the outer ring surface of the horn mouth of the expansion horn, and is used for adjusting the size and angle of the horn mouth of the expansion horn; the invention can adjust the propagation direction and coverage of the sound wave inside the boiler by adjusting the size and angle of the horn mouth of the expansion horn, so as to further achieve the best combustion excitation effect.

Description

Technical Field

[0001] The invention belongs to the technical field of efficient and clean combustion of boilers, and in particular relates to a combustion excitation device for a W-type flame boiler. Background Art

[0002] W-type flame boiler uses anthracite, and there are generally problems such as poor fire and unstable combustion during operation. A large amount of ash is easily generated during the combustion process, resulting in incomplete combustion of coal powder particles in the main combustion zone of the boiler, high combustible content of fly ash, and poor combustion conditions. It was originally planned that the coal powder should be burned out in the main combustion zone, but due to incomplete combustion, a part of the coal powder particles will still be burning in the burning zone, which reduces the heat transfer efficiency between the heat exchange tube bundle on the furnace wall and the heat flow, and is accompanied by a decrease in the evaporation volume of the boiler, an increase in the exhaust temperature and flue gas resistance, and an increase in the consumption of coal in the furnace, resulting in huge energy waste.

[0003] Because the existing W-type flame boilers, when promoting combustion by sound wave excitation, mostly fix the sound wave amplifier to the wall of the furnace in a fixed manner, and cannot adjust the size and angle of the trumpet mouth of the trumpet-shaped amplifier, therefore, the only way to increase the effect of the sound wave on stimulating combustion in the flame boiler is to adjust the intensity of the emitted sound waves and / or the number of combustion-supporting mechanisms that are opened.

[0004] Obviously, this method not only requires frequent adjustment of the working frequency of the sound wave generator, but also requires the installation of multiple sets of combustion stimulating mechanisms on the furnace wall of the flame boiler. Obviously, this method will inevitably increase the production cost of the W-type flame furnace, and it is also difficult to fully promote the combustion of the pulverized coal burning in the W-type flame boiler. Summary of the invention

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0006] The present invention is a combustion excitation device for a W-shaped flame boiler, comprising a W-shaped boiler body and a sound wave excitation mechanism;

[0007] The acoustic wave excitation mechanism is installed on the furnace wall of the W-shaped boiler body, and includes an acoustic wave injection component and a horn adjustment component;

[0008] The sound wave injection assembly comprises a sound wave generator, a sound waveguide, an elastic connecting ring, an expansion horn and an elastic sealing ring; the sound outlet of the sound wave generator is connected to the sound waveguide, and the pipe mouth of the sound waveguide is connected to an adjustable expansion horn through an elastic connecting ring, and the horn mouth of the expansion horn is sealed and connected to the furnace wall of the W-shaped boiler body through an elastic sealing ring;

[0009] The speaker adjustment component is arranged on the outer ring surface of the bell mouth of the expansion speaker, and is used to adjust the size and angle of the bell mouth of the expansion speaker.

[0010] Furthermore, the expansion horn includes an arc plate and an elastic cavity plate, and a plurality of the arc plates and a plurality of elastic cavity plates are interconnected to form a horn-shaped expansion horn. The interior of the elastic connecting ring is a cavity structure, and is connected with an air inlet pipe and an air outlet pipe. The elastic connecting ring of the cavity structure is connected with the plurality of elastic cavity plates through connecting air holes, and an electromagnetic valve body is arranged in each connecting air hole.

[0011] Furthermore, the horn adjustment assembly includes a supporting outer ring, a fixed sleeve, a hydraulic cylinder and a connecting long block. The supporting outer ring is arranged at the outer ring surface of the bell mouth of the expansion horn, and a plurality of fixed sleeves are installed in a circular array on the supporting outer ring. A hydraulic cylinder is horizontally fixedly installed in each of the fixed sleeves. A connecting long block is fixed on the end face of the piston rod of each of the hydraulic cylinders, and the side surface of each of the connecting long blocks is correspondingly connected to each of the arc plates.

[0012] Furthermore, the speaker adjustment assembly also includes a T-shaped slider, a metal block and an electromagnetic strip. The inner side surface of the horizontally arranged long connecting block is provided with a T-shaped groove in a square shape along its length. A T-shaped slider is slidably arranged in the T-shaped groove, and the horizontal block of the T-shaped slider is connected to the outer side surface of the arc plate. A metal block is insulated and installed at the side wall surface where the T-shaped slider and the T-shaped groove are in contact with each other. An electromagnetic strip is insulated and installed on the long groove wall of the T-shaped groove, and the electromagnetic strip is insulated and in contact with the metal block.

[0013] Furthermore, the speaker adjustment assembly also includes a positioning plug and a sliding plug, the inner side surface of the connecting long block is symmetrically provided with positioning slots on both sides of the T-shaped slide groove, and the two ends of the electromagnetic strip extend into the positioning slots, the symmetrical positioning plugs are insulated and installed on the arc plates on both sides of the T-shaped slide, and the symmetrical positioning plugs are respectively inserted into the symmetrical positioning slots, and the ends of the symmetrical positioning plugs are in contact with the extended electromagnetic strips, and the horizontal block of the T-shaped slide is provided with a plug-in cavity, and a sliding plug made of metal is slidably inserted in the plug-in cavity, the sliding block is insulated and fixed on the arc plates between the symmetrical positioning plugs, and an electromagnetic block is insulated and installed on the cavity wall of the plug-in cavity, and the electromagnetic block is in contact with the sliding block.

[0014] Furthermore, a protective cylinder is fixed to the side of the sound wave generator, and the mouth of the protective cylinder extends to the outer ring surface of the supporting outer ring. A mounting flange is provided at the mouth of the protective cylinder, and the mounting flange is connected to the furnace wall of the W-shaped boiler body. A notch groove is opened on the protective cylinder, and the cylinder body of the hydraulic cylinder is inserted into the notch groove.

[0015] Furthermore, the notch groove is opened along the length direction of the protective tube toward the direction of the sound wave generator, a push hydraulic cylinder is fixed to the bottom of the notch groove, a sleeve guide slider is fixed on the cylinder body of the hydraulic cylinder, and the guide slider is slidably arranged in the notch groove, the side surface of the guide slider is connected to the piston rod of the push hydraulic cylinder, and the supporting outer ring is slidably arranged in the protective tube.

[0016] Furthermore, the supporting outer ring is arranged in sections and includes an arc-shaped guide bar, a connecting strip and a T-shaped electromagnetic block. Both ends of the arc-shaped guide bar are provided with T-shaped slots, and the slot wall of the T-shaped slot is insulated with a metal layer. The T-shaped slot is opened through in the direction of the sound wave generator, and is sealed in the back direction. A connecting strip is provided between two adjacent arc-shaped guide bars, and a fixing sleeve is installed on the connecting strip. Both ends of the connecting strip are insulated with T-shaped electromagnetic blocks, and the T-shaped electromagnetic block is slidably inserted into the T-shaped slot.

[0017] The present invention has the following beneficial effects:

[0018] 1. The present invention installs the bell mouth of the adjustable expansion horn on the furnace wall through an elastic sealing ring, and then cooperates with the horn adjustment component. The piston rods of multiple circular arrays of hydraulic cylinders are connected to multiple arc plates through multiple connecting long blocks. Therefore, the extension and contraction of the piston rod of the hydraulic cylinder will drive the multiple arc plates to approach or move away from each other, and at this time, the multiple elastic cavity plates will be compressed or stretched, so that the size of the bell mouth installed on the furnace wall can be adjusted. Then, by adjusting the size of the bell mouth, the operating frequency of the system can be tuned to make it more suitable for specific application requirements, thereby promoting the mixing of fuel particles and air or stabilizing the flame shape.

[0019] 2. Since the connecting long block is slidably connected to the arc plate through a T-shaped slider, one piston rod of the symmetrical hydraulic cylinder extends and the other piston rod is retracted, which can drive the bell mouth of the expansion horn to tilt toward the direction of the hydraulic cylinder that retracts the piston rod, and the cooperation of the two symmetrical connecting long blocks and the T-shaped slider in other directions can play a role in sliding limit for the angle-adjusted expansion horn, preventing the expansion horn from swinging randomly when the angle is adjusted, which affects the subsequent normal size adjustment of the bell mouth of the expansion horn, and then the expansion horn after the angle adjustment can inject sound waves into a specific area of ​​the furnace body, which can not only further adjust the propagation direction and coverage of the sound waves inside the boiler, thereby further achieving the best combustion excitation effect, but also solve the problem of local combustion of coal powder inside the furnace.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0022] Figure 1 This is a front view of the excitation device disclosed in the present invention after installation;

[0023] Figure 2 It is a structural schematic diagram of the excitation device disclosed in the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the protective tube disclosed in the present invention;

[0025] Figure 4 It is a diagram of the matching structure of the speaker adjustment assembly and the amplifier speaker disclosed in the present invention;

[0026] Figure 5 It is a schematic diagram of the structure of the supporting outer ring disclosed in the present invention;

[0027] Figure 6 It is a cross-sectional view of the connecting long block disclosed in the present invention.

[0028] In the figure: 1. W-shaped boiler body;

[0029] 2. Acoustic wave excitation mechanism;

[0030] 3. Sound wave injection assembly; 31. Sound wave generator; 32. Sound waveguide; 33. Elastic connecting ring; 34. Expansion horn; 341. Arc plate; 342. Elastic cavity plate; 35. Elastic sealing ring; 36. Air inlet pipe; 37. Air outlet pipe;

[0031] 4. Speaker adjustment assembly; 41. Support outer ring; 411. Arc guide bar; 412. Connecting strip; 413. T-type electromagnetic block; 414. T-type slot; 42. Fixed sleeve; 43. Hydraulic cylinder; 44. Connecting long block; 441. T-type slide; 442. Positioning slot; 45. T-type slide block; 451. Insertion cavity; 46. Metal block; 47. Electromagnetic strip; 48. Positioning plug block; 49. Sliding plug block;

[0032] 5. Protective tube; 51. Mounting flange; 52. Notch groove;

[0033] 6. Push hydraulic cylinder;

[0034] 7. Guide slider. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] See also Figure 1-Figure 6 As shown, the present invention is a combustion excitation device for a W-shaped flame boiler, comprising a W-shaped boiler body 1 and an acoustic wave excitation mechanism 2;

[0038] The acoustic wave excitation mechanism 2 is installed on the furnace wall of the W-shaped boiler body 1, and includes an acoustic wave injection component 3 and a horn adjustment component 4;

[0039] The sound wave injection assembly 3 includes a sound wave generator 31, a sound waveguide 32, an elastic connecting ring 33, an expansion horn 34 and an elastic sealing ring 35; the sound outlet of the sound wave generator 31 is connected to the sound waveguide 32, and the pipe mouth of the sound waveguide 32 is connected to an adjustable expansion horn 34 through the elastic connecting ring 33, and the horn mouth of the expansion horn 34 is sealed and connected to the furnace wall of the W-shaped boiler body 1 through the elastic sealing ring 35;

[0040] The speaker adjustment component 4 is disposed on the outer ring surface of the bell mouth of the expansion speaker 34, and is used to adjust the size and angle of the bell mouth of the expansion speaker 34;

[0041] Specifically, the present invention sets the trumpet mouth of the expansion horn 34 of the sound wave injection component 3 to be adjustable in size, and is installed on the wall of the furnace through an elastic sealing ring 35 that is resistant to high temperature and coated with high temperature resistant material on the surface, so that the sound waves generated by the sound wave generator 31 will be injected into the W-shaped boiler body 1 through the sound waveguide 32 and the expansion horn 34 to oscillate repeatedly, so that it can stimulate the full combustion of the coal powder introduced into the furnace body; and the sound wave temperature measuring device installed on the wall of the furnace monitors and collects the temperature field data in the furnace in real time, and then feeds back the data to the control center, so as to judge the quality of the furnace combustion under the sound wave excitation, and then control the horn adjustment component 4 to work, so that it can adjust the size of the trumpet mouth of the adjustable expansion horn 34. Because trumpet mouths of different sizes will affect the generation frequency and resonance frequency of the sound waves, by adjusting the size of the trumpet mouth, the operating frequency of the system can be tuned to make it more suitable for specific application requirements. , thereby promoting the mixing of fuel particles and air or stabilizing the flame form; at the same time, the design of the bell mouth directly affects the distribution pattern of sound waves in the furnace. A larger bell mouth can make the sound waves cover a wider area, while a smaller bell mouth may produce a more concentrated sound wave beam. Therefore, the control center can adjust the size of the bell mouth through the speaker adjustment component 4 according to the specific layout and combustion requirements inside the boiler, which will help form an ideal sound field distribution. At the same time, the speaker adjustment component 4 can also adjust the angle of the bell mouth of the expansion speaker 34, thereby adjusting the propagation direction and coverage of the sound waves inside the boiler, so as to further achieve the best combustion excitation effect. The bell mouth of the expansion speaker 34 is elastically connected to the furnace wall through an elastic sealing ring 35 made of high-temperature resistant elastic material and coated with a high-temperature resistant coating, so that it will not interfere with the normal size and angle adjustment of the bell mouth of the expansion speaker 34 on the furnace.

[0042] In this embodiment, the expansion speaker 34 includes an arc plate 331 and an elastic cavity plate 342. A plurality of the arc plates 331 and a plurality of the elastic cavity plates 342 are connected to each other to form a horn-shaped expansion speaker 34. The elastic connecting ring 33 has a cavity structure inside and is connected with an air inlet pipe 36 and an air outlet pipe 37. The elastic connecting ring 33 of the cavity structure is connected with the plurality of elastic cavity plates 342 through connecting air holes, and a solenoid valve body is provided in each connecting air hole.

[0043] Specifically, the trumpet-shaped expansion loudspeaker 34 formed by connecting a plurality of arc-shaped plates 331 and elastic cavity plates 342 to each other enables the loudspeaker adjustment component 4 to accurately and quickly adjust the size of the trumpet mouth of the expansion loudspeaker 34, and the tail of the expansion loudspeaker 34 is elastically connected to the sound waveguide 32 through an elastic connecting ring 33, which not only facilitates the size adjustment of the trumpet mouth of the expansion loudspeaker 34, but also facilitates the swing of the expansion loudspeaker 34 on the sound waveguide 32, thereby facilitating the adjustment of the trumpet mouth of the expansion loudspeaker 34 on the furnace wall. The angle can be adjusted to adjust the diffusion range and diffusion angle of the sound waves injected into the furnace by the expansion horn 34, so that the sound waves injected into the furnace body can improve the mixing of fuel particles and air or the effect of stabilizing the flame shape; and when it is necessary to adjust the size of the bell mouth of the expansion horn 34, at this time, the external air pump is controlled to extract the gas inside the elastic connecting ring 33 and the elastic cavity plate 342 of the cavity structure through the outlet pipe 37, so that the horn adjustment component 4 can quickly and stably adjust the size of the bell mouth, and the bell mouth size adjustment After the adjustment is completed, other gas of a certain pressure is filled into the elastic connecting ring 33 and the elastic cavity plate 342 through the air inlet pipe 36, so that the elastic cavity plate 342 and the elastic connecting ring 33 can be connected to the arc plate 331 in a rigid state, thereby improving the stability and efficiency of the sound wave injection of the expansion speaker 34; and when it is necessary to adjust the angle of the bell mouth of the expansion speaker 34, the electromagnetic valve body in the connecting air hole can be closed at this time, so that the air outlet pipe 37 can only discharge the gas in the elastic connecting ring 33 of the cavity structure, so that the sound waveguide The tube 32 and the expansion horn 34 are in a soft connection state, which makes it easy for the horn adjustment component 4 to adjust the angle of the expansion horn 34. Since the elastic cavity plate 342 is in a rigid state at this time, the expansion horn 34 that is adjusted in angle will not be deformed, thereby not affecting the normal injection of sound waves by the expansion horn 34 after the angle adjustment. The elastic cavity plate 342 and the elastic connecting ring 33 are also made of high-temperature resistant elastic materials and are provided with a high-temperature resistant coating on the surface, so that they will not affect the high combustion temperature in the furnace body and cause safety hazards.

[0044] In this embodiment, the horn adjustment assembly 4 includes a supporting outer ring 41, a fixed sleeve 42, a hydraulic cylinder 43 and a connecting long block 44. The supporting outer ring 41 is arranged at the outer ring surface of the bell mouth of the expansion horn 34, and a plurality of fixed sleeves 42 are installed in a circumferential array on the supporting outer ring 41. A hydraulic cylinder 43 is horizontally fixedly installed in each of the fixed sleeves 42. A connecting long block 44 is fixed to the end surface of the piston rod of each of the hydraulic cylinders 43. The side surface of each of the connecting long blocks 44 is correspondingly connected to each of the arc plates 331.

[0045] Specifically, when it is necessary to reduce and adjust the bell mouth of the expansion horn 34, the gas in the elastic cavity plate 342 and the elastic connecting ring 33 is extracted to soften it, and then the piston rods of the hydraulic cylinders 43 in at least four fixed sleeves 42 of the circular array are controlled to extend, and the supporting outer ring 41 can support and fix the multiple hydraulic cylinders 43, and then the multiple connecting long blocks 44 will push the corresponding multiple arc plates 331 to shrink closer to each other, and at this time, the elastic cavity plate 342 in the softened state will be compressed, so that the bell mouth of the expansion horn 34 surrounded by the multiple arc plates 331 and the multiple elastic cavity plates 342 will be shrunk. A small adjustment is made, and then gas is filled into the elastic cavity plate 342, so that the expansion horn 34 with a reduced bell mouth can generate a more concentrated sound wave beam injected into the furnace to efficiently stimulate the combustion of coal powder; and the piston rods of the multiple hydraulic cylinders 43 are retracted, and at this time the multiple connecting long blocks 44 will drive the multiple arc plates 331 to expand outward synchronously, and at this time the multiple elastic cavity plates 342 in the softened state will be in a stretched state, which is convenient for increasing the bell mouth of the expansion horn 34, so that the larger bell mouth can make the sound waves cover a wider area, thereby further improving the injection of sound waves into the furnace to efficiently stimulate the combustion of coal powder.

[0046] In this embodiment, the speaker adjustment assembly 4 further includes a T-shaped slider 45, a metal block 46 and an electromagnetic strip 47. A T-shaped slot 441 is provided in a square shape along the length of the inner side surface of the horizontally arranged connecting long block 44. The T-shaped slider 45 is slidably arranged in the T-shaped slot 441, and the horizontal block of the T-shaped slider 45 is connected to the outer side surface of the arc plate 331. A metal block 46 is insulated and installed at the side wall surface where the T-shaped slider 45 and the T-shaped slot 441 are in contact with each other. An electromagnetic strip 47 is insulated and installed on the long slot wall of the T-shaped slot 441, and the electromagnetic strip 47 is insulated and installed, and the metal block 46 is in sliding contact with the metal block 46.

[0047] Specifically, when it is necessary to adjust the angle of the expansion horn 34 so that the horn mouth can be oriented toward the inside of the furnace at different angles, for example, when the horn mouth needs to be swung upward toward the top of the main combustion zone, it is necessary to control the electromagnetic strips 47 insulated and installed inside the front and rear connecting long blocks 44 to be de-energized, so that they are separated from the metal block 46 adsorbed and fixed to the end face of the T-shaped slider 45, so that the T-shaped sliders 45 on the outer side faces of the two front and rear symmetrical arc plates 331 can slide freely in the T-shaped slide grooves 441, while the T-shaped sliders 45 on the outer side faces of the two upper and lower symmetrical arc plates 331 are in an adsorbed connection state with the connecting long block 44, and then the piston rod of the hydraulic cylinder 43 located below is controlled to extend, and the piston rod of the hydraulic cylinder 43 located above is retracted, while the left and right arc plates 331 are slidably connected with the connecting long block 44 through the T-shaped slider 45, so that the horn mouth of the expansion horn 34 will swing upward on the furnace wall toward the top of the main combustion zone. When the angle adjustment of the expansion horn 34 is completed, the left and right T-shaped sliders 4 5 will be fixedly connected to the connecting long block 44 through the magnetic adsorption of the metal block 46 and the electromagnetic strip 47, so that the piston rods of the four hydraulic cylinders 43 can continue to stably and safely support the expansion horn 34 after the angle adjustment, so that the expansion horn 34 after the angle adjustment can inject sound waves into a specific area in the furnace body, thereby solving the problem of local combustion of coal powder in the furnace; and because the disconnected T-shaped slider 45 is slidably arranged in the T-shaped slide groove 441 provided in the connecting long block 44, therefore, without affecting the normal connection between the connecting long block 44 and the arc plate 331, it can also play a role in sliding limit for the swinging expansion horn 34, preventing the expansion horn 34 from swinging randomly when the angle is adjusted, thereby affecting the subsequent normal size adjustment of the bell mouth of the expansion horn 34, and because the angle adjustment of the expansion horn 34 is performed when the expansion horn 34 is in a rigid state, it will not interfere with the size of the bell mouth of the expansion horn 34.

[0048] In this embodiment, the speaker adjustment component 4 also includes a positioning plug 48 and a sliding plug 49. The inner side surface of the connecting long block 44 is located on both sides of the T-shaped slide groove 441 and symmetrically opens a positioning slot 442. The two ends of the electromagnetic strip 47 extend into the positioning slot 442. The symmetrical positioning plugs 48 are insulated and installed on the arc plates 331 on both sides of the T-shaped slide 45, and the symmetrical positioning plugs 48 are respectively inserted into the symmetrical positioning slots 442, and the ends of the symmetrical positioning plugs 48 are in contact with the extended electromagnetic strip 47. The horizontal block of the T-shaped slide 45 is provided with an insertion cavity 451, and a sliding plug 49 made of metal is slidably inserted in the insertion cavity 451. The sliding plug 49 is insulated and fixed on the arc plate 331 between the symmetrical positioning plugs 48. An electromagnetic block is insulated and installed on the cavity wall of the insertion cavity 451, and the electromagnetic block is in contact with the sliding plug 49.

[0049] Specifically, in order to make the piston rods of the plurality of hydraulic cylinders 43 extend or retract synchronously, the plurality of arc plates 331 can be synchronously and safely retracted outward or expanded inward. Therefore, when it is necessary to adjust the bell mouth of the expansion horn 34, the piston rods of the plurality of hydraulic cylinders 43 are sequentially controlled to extend so that they push the connecting long block 44 to slide toward the side of the arc plate 331. At this time, the sliding plug block 49 will be continuously inserted into the plug-in cavity 451, and the positioning plug blocks 48 on both sides of the sliding plug block 49 will be aligned and inserted into the positioning slot 442. Then, the electromagnetic strip 47 is energized with a magnetic adsorption force to adsorb and fix the T-shaped slider 45 and the two inserted positioning plug blocks 48, and the electromagnetic block will adsorb and fix the sliding plug block 49, thereby increasing the connection area and connection stability between the connecting long block 44 and the arc plate 331, so that when the piston rods of the plurality of hydraulic cylinders 43 are extended or retracted, they can drive the plurality of arc plates 331 to move. The plate 331 contracts and expands synchronously, and the stability and firmness of the adjusted expansion speaker 34 will not be affected because the connecting long block 44 and the arc plate 331 are only connected at a point through the sliding plug block 49; and when the swing angle of the expansion speaker 34 needs to be adjusted, the electromagnetic strip 47 in the corresponding connecting long block 44 is first controlled to be de-energized to lose the adsorption and fixation of the metal block 46 of the T-shaped slider 45, and the electromagnetic block is de-energized to disengage the adsorption and fixation of the sliding plug block 49, and then the piston rod of the hydraulic cylinder 43 is slowly retracted to make the positioning plug block 48 disengage from the positioning slot 442. Since the length of the sliding plug block 49 is greater than the length of the positioning plug block 48, the sliding plug block 49 is still located in the plug-in cavity 451 and has not disengaged, so that the arc plate 331 is only slidably connected to the connecting long block 44 through the cooperation of the sliding plug block 49 and the T-shaped slider 45, and therefore, it will not interfere with the normal and safe adjustment of the swing angle of the expansion speaker 34.

[0050] In this embodiment, a protective tube 5 is fixed to the side of the acoustic wave generator 31, and the tube mouth of the protective tube 5 extends to the outer ring surface of the supporting outer ring 41. A mounting flange 51 is provided at the tube mouth of the protective tube 5, and the mounting flange 51 is connected to the furnace wall of the W-shaped boiler body 1. A notch groove 52 is opened on the protective tube 5, and the cylinder body of the hydraulic oil cylinder 43 is inserted into the notch groove 52;

[0051] Specifically, the design of the protective tube 5 can protect the sound waveguide 32, the expansion horn 34 and the horn adjustment assembly 4, and prevent external factors from interfering with the horn adjustment assembly 4; and the protective tube 5 can be fixedly installed on the furnace wall of the W-shaped boiler body 1 through the mounting flange 51, and will not affect the swing angle of the expansion horn 34 and the normal adjustment of the size of the horn mouth. The notch groove 52 can avoid the cylinder body of the extended hydraulic cylinder 43 without causing installation interference.

[0052] In this embodiment, the notch groove 52 is opened along the length direction of the protective tube 5 toward the direction of the sound wave generator 31, a push hydraulic cylinder 6 is fixed to the bottom of the notch groove 52, a sleeve guide slider 7 is fixed to the cylinder body of the hydraulic oil cylinder 43, and the guide slider 7 is slidably set in the notch groove 52, the side of the guide slider 7 is connected to the piston rod of the push hydraulic cylinder 6, and the support outer ring 41 is slidably set in the protective tube 5;

[0053] Specifically, when it is necessary to clean the coal powder and other impurities adhered to the inner wall of the expansion horn 34 that has been used for a long time, it is necessary to control the piston rods of the multiple hydraulic cylinders 43 to be retracted when the boiler body is not working and in a safe environment, first make the positioning plug 48 disengage and pull out from the positioning slot 442, and then control the electromagnetic strip 47 to adsorb and fix the T-shaped slider 45, and then continue to retract the piston rod, so that the sliding plug 49 will be disengaged and pulled out from the insertion cavity 451, and then the connecting long block 44 will be disconnected from the arc plate 331, and then control the piston rods of the multiple push hydraulic cylinders 6 in the multiple notch grooves 52 to be retracted. The guide slider 7 will drive the cylinder bodies of multiple hydraulic cylinders 43 to slide in the notch groove 52. At this time, the supporting outer ring 41 will drive the multiple connecting long blocks 44 to slide in the direction of the bell mouth away from the expansion horn 34, and then control the piston rods of the multiple hydraulic cylinders 43 to extend and retract reciprocally, and then the multiple connecting long blocks 44 forming a circular ring will knock and vibrate the expansion horn 34, and at the same time cooperate with the sound waves generated by the sound wave generator 31, so as to knock and clean the coal powder or burning impurities adhered to the inner wall of the expansion horn 34, and the cleaning personnel do not need to remove the expansion horn 34 from the furnace wall, and can quickly clean it.

[0054] In this embodiment, the supporting outer ring 41 is arranged in sections and includes an arc-shaped guide bar 411, a connecting strip 412 and a T-shaped electromagnetic block 413. Both ends of the arc-shaped guide bar 411 are provided with T-shaped slots 414, and a metal layer is insulated on the slot wall of the T-shaped slot 414. The T-shaped slot 414 is opened through in the direction of the sound wave generator 31, and the back direction thereof is sealed. A connecting strip 412 is arranged between two adjacent arc-shaped guide bars 411, and a fixing sleeve 42 is installed on the connecting strip 412. Both ends of the connecting strip 412 are insulated and provided with T-shaped electromagnetic blocks 413, and the T-shaped electromagnetic blocks 413 are slidably inserted into the T-shaped slots 414.

[0055] Specifically, in order to facilitate the rapid discharge of the cleaned coal powder or other impurities from the expansion horn 34, the bell mouth of the expansion horn 34 can be driven to swing downward, and at this time, the piston rod of the hydraulic cylinder 43 located below is in a stationary state, fixedly supporting the expansion horn 34 swinging downward, and then the T-shaped electromagnetic blocks 413 at both ends of the connecting strip 412 corresponding to the lower hydraulic cylinder 43 are controlled to be powered off, so that it is disconnected from the arc-shaped guide strips 411 on both sides, and then the piston rods of the push hydraulic cylinders 6 corresponding to the other three hydraulic cylinders 43 are controlled to be retracted, so that the other three hydraulic cylinders 43 can drive the disconnected connecting long blocks 44 to slide to other parts of the expansion horn 34, and then multiple connecting long blocks 44 frequently knock and vibrate the horn body of the expansion horn 34, so that the adhered coal powder can be vibrated and fall to the inner bottom of the inclined expansion horn 34, and at the same time, the piston rod of the push hydraulic cylinder 6 can be reciprocated. And retract, so that it can drive multiple connecting long blocks 44 to knock and vibrate different positions of the expansion horn 34, thereby improving the cleaning effect of impurities such as coal powder adhered to the inner wall of the expansion horn 34; when the cleaned coal powder and other impurities fall and gather at the bottom of the inclined expansion horn 34, the connecting long blocks 44 in the other three directions can be controlled to connect with the three arc plates 331, and the connecting long blocks 44 located at the bottom can be disconnected from the connection with the arc plate 331 below, and because they can slide freely along the length direction of the expansion horn 34, the connecting long blocks 44 at the bottom can knock and vibrate the arc plate 331 below, and at this time, the elastic cavity plates 342 on both sides of the arc plate 331 below can be controlled to be in a softened state, and the arc plate 331 below will shake when it is subjected to the vibration and knocking force, so that the impurities such as coal powder gathered at the bottom of the expansion horn 34 tilted downward can be quickly removed and cleaned.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0057] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A combustion excitation device for a W-type flame boiler, characterized in that: It comprises a W-shaped boiler body (1) and an acoustic wave excitation mechanism (2); The sound wave excitation mechanism (2) is installed on the furnace wall surface of the W-shaped boiler body (1), and comprises a sound wave injection component (3) and a horn adjustment component (4); The sound wave injection assembly (3) comprises a sound wave generator (31), a sound waveguide (32), an elastic connecting ring (33), an amplifying horn (34) and an elastic sealing ring (35); the sound outlet of the sound wave generator (31) is connected to the sound waveguide (32), and the pipe mouth of the sound waveguide (32) is connected to an adjustable amplifying horn (34) via the elastic connecting ring (33); the horn mouth of the amplifying horn (34) is sealed and connected to the furnace wall surface of the W-shaped boiler body (1) via the elastic sealing ring (35); The speaker adjustment component (4) is arranged on the outer ring surface of the bell mouth of the expansion speaker (34) and is used to adjust the size and angle of the bell mouth of the expansion speaker (34); The expansion horn (34) comprises an arc-shaped plate (341) and an elastic cavity plate (342); a plurality of the arc-shaped plates (341) and a plurality of the elastic cavity plates (342) are interconnected to form a horn-shaped expansion horn (34); the elastic connecting ring (33) has a cavity structure inside and is connected to an air inlet pipe (36) and an air outlet pipe (37); the elastic connecting ring (33) of the cavity structure is connected to the plurality of elastic cavity plates (342) via connecting air holes, and a solenoid valve body is provided in each connecting air hole; The horn adjustment assembly (4) comprises a supporting outer ring (41), a fixing sleeve (42), a hydraulic cylinder (43) and a connecting long block (44); the supporting outer ring (41) is arranged at the outer ring surface of the bell mouth of the expansion horn (34); a plurality of fixing sleeves (42) are installed in a circular array on the supporting outer ring (41); a hydraulic cylinder (43) is fixedly installed horizontally in each fixing sleeve (42); a connecting long block (44) is fixed to the end surface of the piston rod of each hydraulic cylinder (43); and a side surface of each connecting long block (44) is correspondingly connected to each of the arc-shaped plates (341); The speaker adjustment assembly (4) further comprises a T-shaped slider (45), a metal block (46) and an electromagnetic strip (47); the inner side surface of the horizontally arranged long connecting block (44) is provided with a T-shaped slot (441) in a square shape along its length; the T-shaped slider (45) is slidably arranged in the T-shaped slot (441); the horizontal block of the T-shaped slider (45) is connected to the outer side surface of the arc plate (341); the metal block (46) is insulated and installed at the side wall surface where the T-shaped slider (45) and the T-shaped slot (441) are in contact with each other; the electromagnetic strip (47) is insulated and installed on the long slot wall of the T-shaped slot (441); and the electromagnetic strip (47) is in sliding contact with the metal block (46); The speaker adjustment assembly (4) further comprises a positioning plug (48) and a sliding plug (49), the inner side surface of the connecting long block (44) is symmetrically provided with positioning slots (442) on both sides of the T-shaped slide groove (441), the two ends of the electromagnetic strip (47) extend into the positioning slots (442), the symmetrical positioning plugs (48) are insulated and mounted on the arc plates (341) on both sides of the T-shaped slide (45), and the symmetrical positioning plugs (48) are respectively inserted into the symmetrical positioning slots (442). ), and the ends of the symmetrical positioning plugs (48) are in contact with the extended electromagnetic strip (47), the horizontal block of the T-shaped slider (45) is provided with an insertion cavity (451), and a sliding plug (49) made of a metal material is slidably inserted in the insertion cavity (451), the sliding plug (49) is insulated and fixed on the arc plate (341) between the symmetrical positioning plugs (48), and an electromagnetic block is insulated and installed on the cavity wall of the insertion cavity (451), and the electromagnetic block is in contact with the sliding plug (49).

2. A combustion excitation device for a W-type flame boiler according to claim 1, characterized in that: A protective tube (5) is fixed to the side of the acoustic wave generator (31), and the tube mouth of the protective tube (5) extends to the outer ring surface of the supporting outer ring (41). A mounting flange (51) is provided at the tube mouth of the protective tube (5), and the mounting flange (51) is connected to the furnace wall surface of the W-shaped boiler body (1). A notch groove (52) is provided on the protective tube (5), and the cylinder body of the hydraulic oil cylinder (43) is inserted into the notch groove (52).

3. A combustion excitation device for a W-type flame boiler according to claim 2, characterized in that: The notch groove (52) is opened along the length direction of the protective tube (5) in the direction of the sound wave generator (31); a push hydraulic cylinder (6) is fixed to the bottom of the notch groove (52); a sleeve guide slider (7) is fixed to the cylinder body of the hydraulic oil cylinder (43); the guide slider (7) is slidably arranged in the notch groove (52); a side surface of the guide slider (7) is connected to the piston rod of the push hydraulic cylinder (6); and the support outer ring (41) is slidably arranged in the protective tube (5).

4. A combustion excitation device for a W-type flame boiler according to claim 3, characterized in that: The supporting outer ring (41) is arranged in sections and comprises an arc-shaped guide bar (411), a connecting strip (412) and a T-shaped electromagnetic block (413). Both ends of the arc-shaped guide bar (411) are provided with a T-shaped slot (414), and a metal layer is insulated on the slot wall of the T-shaped slot (414). The T-shaped slot (414) is opened through in the direction of the sound wave generator (31), and is sealed in the back direction. A connecting strip (412) is arranged between two adjacent arc-shaped guide bars (411), and a fixing sleeve (42) is installed on the connecting strip (412). Both ends of the connecting strip (412) are insulated and provided with T-shaped electromagnetic blocks (413), and the T-shaped electromagnetic blocks (413) are slidably inserted into the T-shaped slot (414).

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