Acoustic wave soot blower with temperature measurement function

Abstract

The application discloses a sound wave soot blower with temperature measurement function, which comprises an end body arranged on a base, a diaphragm fixedly arranged in the end body, a sound transmission pipe arranged on one side of the end body, and a sealing ring arranged between the diaphragm and one end of the sound transmission pipe, wherein the diaphragm is abutted against the one end of the sound transmission pipe through the sealing ring, the other end of the sound transmission pipe is provided with a loudspeaker, the sealing ring is arranged to slide along the elastic deformation direction of the diaphragm at the one end of the sound transmission pipe, and the sound wave soot blower further comprises a pressure detection mechanism and a first driving mechanism, wherein the pressure detection mechanism is used for detecting the change of the interaction force between the diaphragm and the sealing ring, and the first driving mechanism is used for controlling the movement of the sealing ring based on the detection signal of the pressure detection mechanism.

Description

Technical Field

[0001] This invention relates to the technical field of dust removal in power plant boilers, specifically to an acoustic soot blower with temperature measurement function. Background Technology

[0002] As is well known, power plants generate electricity by burning coal in boilers. During the process of coal combustion producing flue gas, dust is produced. During the operation of the boiler, the surface of its heating surfaces—water-cooled walls, superheaters, economizers, preheaters, and flues—accumulates dust and slag, which has long been a difficult problem to solve in production.

[0003] In the existing technology, most boilers are equipped with steam soot blowers, compressed air soot blowers, steel ball soot blowers, and sonic soot blowers. Among them, the sonic soot blower uses compressed air to drive the sonic soot blower diaphragm, which emits high-intensity, low-frequency sound waves, causing the dust to resonate and be in a free state. These dust particles are removed from the surface of the equipment by airflow and gravity and are carried away.

[0004] For example, a sonic soot blower, with announcement number CN1255224C and announcement date May 10, 2006, includes a sonic generating device and a disc-shaped base. The base has an annular air inlet groove, and the side wall of the base has an air inlet hole communicating with the air inlet groove. A diaphragm support device protruding upwards is located in the center of the bottom of the air inlet groove. The support device has a sound transmission chamber formed by a conical channel communicating with the first air inlet groove. The diaphragm fits snugly against the side wall of the groove and is placed on the diaphragm support device. A pressure cap is connected to the end face of the base via fasteners. The annular flange end of the pressure cap presses the diaphragm against the support device. The diaphragm separates the air chamber, the sound transmission chamber, and the air inlet groove. Compressed gas is input through the air inlet hole. Under the action of the compressed gas and the pressure cap, the diaphragm on the support ring continuously undergoes elastic deformation, generating soot blowing sound waves. It has no moving parts, a simple structure, is easy to operate, and provides reliable sound generation; it is suitable for use in various types of soot blowing applications.

[0005] The diaphragm is made of metal, and its installation is generally done using fixed connections. The diaphragm can only achieve the desired dust-blowing effect by vibrating within the required vibration amplitude range. During repeated vibration, metal fatigue will occur, causing the diaphragm to undergo plastic deformation. After plastic deformation, the sealing effect between the diaphragm and the sound transmission chamber deteriorates, and compressed gas can directly enter the sound transmission chamber. Consequently, the force exerted by the compressed gas on the diaphragm will inevitably decrease, preventing the diaphragm from vibrating within the required vibration amplitude range, and thus reducing the desired dust-blowing effect.

[0006] The shortcoming of the existing technology is that one of the reasons why the staff replaces the diaphragm is based on the soot blowing effect. That is, when the sealing effect between the diaphragm and the sound transmission chamber is reduced, the soot blowing effect will inevitably be reduced. If the sealing effect between the diaphragm and the sound transmission chamber can still be maintained at the required standard, the diaphragm can continue to be used. Replacing the diaphragm too early will undoubtedly reduce the service life of the diaphragm. Summary of the Invention

[0007] The purpose of this invention is to provide an acoustic soot blower with temperature measurement function, thereby solving the technical problems in related technologies.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] An acoustic soot blower with temperature measurement function includes an end body mounted on a base, a diaphragm fixedly connected inside the end body, a sound transmission tube provided on one side of the end body, the diaphragm abutting against one end of the sound transmission tube via a sealing ring when not vibrating, a horn provided at the other end of the sound transmission tube, and the sealing ring slidingly disposed at one end of the sound transmission tube along the elastic deformation direction of the diaphragm, and further includes:

[0010] A pressure testing mechanism used to detect changes in the interaction force between the diaphragm and the sealing ring;

[0011] The first drive mechanism controls the movement of the sealing ring based on the detection signal from the pressure detection mechanism.

[0012] As described above, an annular groove is provided on one end face of the sound transmission tube, and the sealing ring is slidably disposed in the axial direction of the annular groove.

[0013] The pressure detection mechanism described above includes a contact that contacts the diaphragm, a transmission section that transmits power to the first driving mechanism, and a detection section that detects the pressure exerted on the contact by the diaphragm. The contact and the transmission section are connected through the detection section.

[0014] As described above, the contact moves the sealing ring via a connecting rod.

[0015] As described above, the transmission section drives the sealing ring to move through a stroke amplification mechanism.

[0016] The aforementioned stroke amplification mechanism includes a plurality of first swing arms and a plurality of second swing arms arranged circumferentially within the end body. The plurality of first swing arms and the plurality of second swing arms correspond one-to-one, and both the first swing arms and the second swing arms are connected to the end body by rotation. The rotation point of the second swing arm and the end body can be adjusted in the length direction of the second swing arm. When the transmission section moves, it drives the first swing arms to swing, and the first swing arms drive the second swing arms to swing so as to bring the sealing ring close to the diaphragm.

[0017] As described above, a set of pressure rings is provided on each side of the diaphragm in the end body. The number of pressure rings in each set is several and their radial dimensions increase sequentially. The pressure rings of the same size in the two sets correspond to each other in the axial direction. It also includes a second driving mechanism. When the pressure detection mechanism detects that the pressure between the contact and the diaphragm decreases, the second driving mechanism drives the two corresponding pressure rings in the axial direction to move closer to each other to restrict the diaphragm according to the order of the radial dimensions of the pressure rings from large to small.

[0018] As described above, multiple support seats are arranged circumferentially in parallel within the end body. Each support seat is slidably connected to the end body in the radial direction, and a first elastic element is connected between each support seat and the end body in the sliding direction. When the transmission section is driven by the first driving mechanism to move towards the diaphragm, each support seat gradually approaches the sound tube under the elastic force of the first elastic element connected to it. The second driving mechanism includes a driving source disposed on one of the support seats. The output end of the driving source is fixedly connected to a lead screw, and two moving blocks with opposite rotation directions are screwed onto the lead screw. A slide rod is fixedly connected to each of the other support seats, and two moving blocks are slidably disposed on the slide rod. A transmission ring is slidably disposed on each side of the diaphragm in the end body. The transmission ring is connected to each moving block at the corresponding position through a telescopic rod, and a push rod is installed on each moving block.

[0019] As described above, the support seat restricts the pressure rings of decreasing size in the radial direction in sequence, and during the movement of the support seat toward the sound tube, the restriction is released on each pressure ring in the order of decreasing size.

[0020] As described above, the end of the push rod away from the moving block includes a support and a pusher. While the pusher pushes the pressure ring to move, the support lifts it from the inner wall of the pressure ring.

[0021] The beneficial effects of this invention are as follows: by setting a pressure detection mechanism, the change in the interaction force between the diaphragm and the sealing ring can be monitored in real time. After the diaphragm undergoes multiple elastic deformations, metal fatigue occurs, and the sealing effect between it and one end of the sound tube will inevitably deteriorate. Then, the sealing ring is driven by the first driving mechanism to adhere to the diaphragm in the direction of the elastic deformation of the diaphragm to maintain the normal interaction force, that is, to maintain the required sealing effect. The diaphragm can still be used for a period of time, thereby extending the service life of the diaphragm. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an acoustic soot blower with temperature measurement function provided in one embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the overall axial cross-sectional structure of the diaphragm of an acoustic soot blower with temperature measurement function provided in one embodiment of the present invention when the diaphragm has not undergone elastic deformation;

[0025] Figure 3 This is a schematic diagram of the overall axial cross-sectional structure of the diaphragm of an acoustic soot blower with temperature measurement function in one embodiment of the present invention when the diaphragm undergoes elastic deformation;

[0026] Figure 4 This is a schematic diagram of the overall axial cross-sectional structure of an acoustic soot blower with temperature measurement function provided in another embodiment of the present invention;

[0027] Figure 5 This is a schematic diagram of the overall axial cross-sectional structure of an acoustic soot blower with temperature measurement function provided in another embodiment of the present invention;

[0028] Figure 6 for Figure 5 A magnified structural diagram at point A in the diagram.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. End body; 10. Diaphragm; 11. Sound tube; 12. Sealing ring; 13. Horn; 14. Left end cover; 15. Right end cover; 16. Air intake chamber; 17. Breathing chamber; 18. Sound transmission chamber; 19. Annular groove; 20. Contact; 21. Transmission section; 22. Detection section; 23. Connecting rod; 24. First swing rod; 25. Second swing rod; 26. Pressure ring; 27. Support seat; 28. Drive source; 29. ​​Lead screw; 30. Slide rod; 31. Moving block; 32. Transmission ring; 33. Telescopic rod; 34. Push rod; 340. Support part; 341. Push part; 35. Transmission rod; 36. Extrusion block; 37. Locking rod; 38. Locking hole; 39. First wedge surface; 40. Second wedge surface. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1 To be continued Figure 6 The present invention will now be described in further detail.

[0032] In all embodiments of the present invention, for the sake of convenience of description and not for the sake of limitation of claims, the side of the diaphragm 10 that is axially oriented toward the horn 13 is referred to as the left side and the other side as the right side.

[0033] See Figures 1 to 3 In one embodiment of the present invention, an acoustic soot blower with temperature measurement function is provided, including an end body 1 disposed on a base, a diaphragm 10 fixedly connected inside the end body 1, a sound transmission tube 11 provided on one side of the end body 1, the diaphragm 10 abutting against one end of the sound transmission tube 11 through a sealing ring 12 when not vibrating, a horn 13 provided at the other end of the sound transmission tube 11, and the sealing ring 12 slidingly disposed at one end of the sound transmission tube 11 along the elastic deformation direction of the diaphragm 10, and further including: a pressure detection mechanism for detecting the change in the interaction force between the diaphragm 10 and the sealing ring 12; and a first driving mechanism for controlling the movement of the sealing ring 12 based on the detection signal of the pressure detection mechanism.

[0034] Specifically, end body 1 is divided into a left end cover 14 and a right end cover 15. The left end cover 14 and the right end cover 15 are fixed together by bolts, and when the left end cover 14 and the right end cover 15 are connected, they together press and fix the edge of the diaphragm 10. The sound tube 11 is connected to the left end cover 14. The left side of the diaphragm 10 abuts against one end of the sound tube 11 and is sealed by the sealing ring 12. In this way, the diaphragm 10 divides the internal cavity of the left end cover 14, the internal cavity of the right end cover 15, and the internal cavity of the sound tube 11 into an air intake chamber 16, a breathing chamber 17 (connected to the outside to maintain air pressure balance), and a sound transmission chamber 18, respectively. That is, when compressed air enters the air intake chamber 16, it compresses the diaphragm 10, and the diaphragm 10 undergoes elastic deformation toward the breathing chamber 17. The air intake chamber 16 is connected to the sound transmission chamber 18, and the compressed gas... As the pressure on the diaphragm 10 decreases, the diaphragm 10, under its own elastic force, again comes into contact with the end of the sound transmission tube 11 where the sealing ring 12 is located, separating the air intake chamber 16 from the sound transmission chamber 18. Since the compressed air continuously enters the air intake chamber 16, the compressed air will squeeze the diaphragm 10 again, and the diaphragm 10 will undergo elastic deformation toward the breathing chamber 17. The air intake chamber 16 and the sound transmission chamber 18 will then be connected, and the pressure of the compressed gas on the diaphragm 10 will decrease again. The diaphragm 10 will reset under its own elastic force. As the compressed gas continues to enter the air intake chamber 16, the diaphragm 10 will repeatedly deform and rebound, thus generating vibration that converts the compressed air into sound waves. The sound waves pass through the sound transmission chamber 18, enter the horn 13, are amplified, and then enter the furnace for soot blowing.

[0035] After repeated deformation and rebound of the diaphragm 10, metal fatigue is inevitable. This results in plastic deformation of the diaphragm 10, meaning it cannot return to its original state on the left and right sides and vertical plane after rebound. Consequently, the sealing effect between the diaphragm 10 and the sealing ring 12 will decrease, allowing a small amount of compressed gas to pass through the air intake chamber 16 and the sound transmission chamber 18. The force exerted on the diaphragm 10 by the compressed gas entering the air intake chamber 16 will decrease initially, leading to a smaller deformation amplitude and reduced vibration intensity. This is detrimental to the cleaning of ash accumulation in the furnace. Therefore, in this embodiment, a pressure detection mechanism, such as a pressure sensor, is provided to intermittently or continuously detect changes in the interaction force between the sealing ring 12 and the diaphragm 10. That is, after the diaphragm 10 deforms and rebounds, it will inevitably exert a smaller force on the diaphragm 10. A certain pressure is applied to the sealing ring 12 to achieve the required sealing effect. When the diaphragm 10 experiences metal fatigue and deforms and rebounds, it cannot return to its initial position to provide the required force to the sealing ring 12. The pressure detection mechanism will detect the change in the interaction force between the two and transmit the signal to the first drive mechanism. The first drive mechanism will then drive the sealing ring 12 to move closer to the left side of the diaphragm 10 (the first drive mechanism can provide linear motion force for the movement of the sealing ring 12, such as an electric push rod 34, a cylinder, etc., which is existing technology and will not be described in detail) until the interaction force between the diaphragm 10 and the sealing ring 12 returns to the required value. After the sealing effect is normal, the force applied to the diaphragm 10 by the compressed gas remains unchanged, and the diaphragm 10 can still continue to generate the sound wave energy required for blowing soot by the drive of compressed air.

[0036] In this embodiment, by setting a pressure detection mechanism, the change in the interaction force between the diaphragm 10 and the sealing ring 12 can be monitored in real time. After the diaphragm 10 undergoes multiple elastic deformations, metal fatigue will occur, and the sealing effect between it and one end of the sound tube 11 will inevitably deteriorate. Then, the sealing ring 12 is driven by the first driving mechanism to press against the diaphragm 10 in the direction of elastic deformation to maintain normal interaction force, that is, to maintain the required sealing effect. The diaphragm 10 can still be used for a period of time, thereby extending the service life of the diaphragm 10.

[0037] In addition, this embodiment also includes a temperature sensor for detecting temperature changes inside the furnace. This is existing technology and will not be described in detail.

[0038] Preferably, an annular groove 19 is formed on one end face of the sound transmission tube 11, and the sealing ring 12 is slidably disposed in the axial direction of the annular groove 19. Specifically, the sealing ring 12 is connected to one end of the sound transmission tube 11 in the following ways: the sealing ring 12 is sleeved on the outer wall of the sound transmission tube 11, the sound transmission tube 11 is sleeved on the outer wall of the sealing ring 12, and the sealing ring 12 provided in this embodiment is equivalent to being embedded in the end of the sound transmission tube 11. The sealing ring 12 is sleeved on the outer wall of the sound transmission tube 11 or the sound transmission tube 11 is sleeved on the outer wall of the sealing ring 12. The contact surface between the sound transmission tube 11 and the sealing ring 12 is relatively simple, while the connection method between the sealing ring 12 and the sound transmission tube 11 in this embodiment can achieve multi-sided contact, so that the sealing effect between the two is better.

[0039] Preferably, the pressure detection mechanism includes a contact 20 that contacts the diaphragm 10, a transmission section 21 that transmits power to the first driving mechanism, and a detection section 22 that detects the pressure exerted on the contact 20 by the diaphragm 10, wherein a pressure sensor is provided on the detection section 22 for pressure detection. The contact 20 and the transmission section 21 are connected through the detection section 22.

[0040] Specifically, the contact 20 and the sealing ring 12 are made of the same material. When in contact with the diaphragm 10, and since the contact 20 is annular, there is also an interaction force between the two when the diaphragm 10 rebounds and contacts the contact 20. The transmission section 21 is also annular, meaning that the first drive mechanism can drive the transmission section 21 to slide along the axial direction of the diaphragm 10 within the end body 1. The transmission section 21 drives the contact 20 to move through the detection section 22. When the diaphragm 10 applies force to the contact 20, the contact 20 transmits this force to the detection section 22, which can then detect the contact. The diaphragm 10 applies a change in force to the contact 20. This is equivalent to determining the change in the interaction force between the sealing ring 12 and the diaphragm 10 by detecting the change in the interaction force between the contact 20 and the diaphragm 10. These two forces are not equal, but they are proportional. Therefore, the sealing ring 12 can still be driven based on its changing trend. When the first driving mechanism drives the transmission section 21 to move in order to adjust the interaction force between the contact 20 and the diaphragm 10, it can also drive the sealing ring 12 to move in order to adjust the interaction force between the sealing ring 12 and the diaphragm 10.

[0041] Preferably, the contact 20 drives the sealing ring 12 to move via a connecting rod 23; specifically, the movement of the contact 20 can drive the sealing ring 12 to move synchronously via the connecting rod 23, so that the sealing ring 12 can passively adhere to the diaphragm 10 to adjust the sealing effect between it and the diaphragm 10.

[0042] See Figures 4 to 6In another embodiment of the present invention, the transmission section 21 drives the sealing ring 12 to move through a stroke amplification mechanism. Specifically, the contact 20 and the sealing ring 12 are set separately, and the contact 20 is preferably not set inside the sound transmission tube 11, otherwise it will affect the transmission of sound waves. Thus, the radial dimension of the contact 20 must be greater than the radial dimension of the sealing ring 12. Then the contact 20 is closer to the edge of the diaphragm 10. After the diaphragm 10 undergoes plastic deformation, the closer it is to the center, the farther the axial distance from the sealing ring 12 is. Therefore, when adjusting the sealing effect between the sealing ring 12 and the diaphragm 10, the moving distance of the sealing ring 12 must be greater than the moving distance of the contact 20. Therefore, in this embodiment, the contact 20 drives the sealing ring 12 to move together through a stroke amplification mechanism, so that after the interaction force between the contact 20 and the diaphragm 10 is adjusted to the required range, the interaction force between the sealing ring 12 and the diaphragm 10 can also be adjusted to the required range.

[0043] Preferably, the stroke amplification mechanism includes a plurality of first swing rods 24 and a plurality of second swing rods 25 arranged circumferentially within the end body 1. The plurality of first swing rods 24 and the plurality of second swing rods 25 correspond one-to-one, and both the first swing rods 24 and the second swing rods 25 are rotatably connected to the end body 1. The rotation point of the second swing rod 25 and the end body 1 can be adjusted in the length direction of the second swing rod 25. When the transmission section 21 moves, it drives the first swing rods 24 to swing, and the first swing rods 24 drive the second swing rods 25 to swing so as to bring the sealing ring 12 close to the diaphragm 10.

[0044] Specifically, because the contact 20 and the sealing ring 12 move in the same direction, during the stroke of the contact 20 near the left side of the diaphragm 10 (i.e., the contact 20 moves to the right), the transmission section 21 can push one end of the first rocker arm 24 to swing to the right, and the other end of the first rocker arm 24 will swing to the left. The other end of the first rocker arm 24 will drive one end of the second rocker arm 25 to swing to the right together, and the other end of the second rocker arm 25 will swing to the left. In this way, the other end of the second rocker arm 25 can push the sealing ring 12 to move to the right. When the rotation point between the second rocker arm 25 and the end body 1 can be adjusted, if the rotation point is closer to the first rocker arm 24, the arc length of the swing at one end of the second rocker arm 25 will be shorter, and the arc length of the swing at the other end will necessarily be longer than the arc length of the swing at one end, thereby amplifying the stroke. The position of the rotation point between the second rocker arm 25 and the end body 1 can be set according to the actual situation.

[0045] Furthermore, a set of pressure rings 26 is provided on each side of the diaphragm 10 within the end body 1. The number of pressure rings 26 in each set is several, and their radial dimensions increase sequentially. The pressure rings 26 of the same size in the two sets correspond to each other in the axial direction. It also includes a second driving mechanism. When the pressure detection mechanism detects that the pressure between the contact 20 and the diaphragm 10 decreases, the second driving mechanism sequentially drives the two corresponding pressure rings 26 in the axial direction to move closer to each other to restrict the diaphragm 10, according to the order of the radial dimensions of the pressure rings 26 from large to small.

[0046] Specifically, when the diaphragm 10 experiences metal fatigue, the junction between its connection point and the non-connection point with the end body 1 is the most severely fatigued area. If only the interaction force between the sealing ring 12 and the contact point of the diaphragm 10 is adjusted, the diaphragm 10 will continue to deform and rebound, and the most severely fatigued area will still be the junction between its connection point and the non-connection point with the end body 1, directly leading to the breakage of the diaphragm 10. Therefore, in this embodiment, while adjusting the interaction force between the sealing ring 12 and the diaphragm 10, the second drive mechanism drives the two corresponding pressure rings 26 in the axial direction to move closer to each other and press the junction between the connection point and the non-connection point of the diaphragm 10 with the end body 1. Afterwards, when the diaphragm 10 deforms and rebounds, the junction between its connection point and the non-connection point with the end body 1 will change to the junction between its connection point and the non-connection point with the pressure ring 26, avoiding the situation where the diaphragm 10 breaks due to excessive fatigue at the same location.

[0047] In sonic soot blowing, the vibration intensity of the sound waves will obviously vary within a certain range. As long as the sound waves generated by the vibration of the diaphragm 10 can clean the dust deposited in the furnace and achieve the expected cleaning effect, the diaphragm 10 can continue to be used. Therefore, the pressure ring 26 is set in various ways according to the radial dimension. As the plastic deformation of the diaphragm 10 increases, the pressure ring 26 also presses the junction of the part connected to and the part not connected to the diaphragm 10 in order from large to small size. For ease of description, the pressure ring 26 is divided into the first layer, the second layer, the third layer and so on in order from large to small radial dimension. When the pressure ring 26 is not in use, the first layer pressure ring 26 is fitted on the outer wall of the second layer pressure ring 26, the second layer pressure ring 26 is fitted on the outer wall of the third layer pressure ring 26 and so on.

[0048] When the first layer pressing ring 26 presses the diaphragm 10, it is driven by the second driving mechanism to move and stick to the surface of the diaphragm 10. During the vibration of the diaphragm 10, the second driving mechanism also restricts the position of the first layer pressing ring 26. When the second layer pressing ring 26 needs to be replaced, the second driving mechanism removes the restriction on the first layer pressing ring 26 and brings the first layer pressing ring 26 back to its initial position. Then, when the second driving mechanism drives the second layer pressing ring 26 to push close to the diaphragm 10 and stick to the diaphragm 10, it also brings the first layer pressing ring 26 back to continue pressing the diaphragm 10. When the diaphragm 10 vibrates, the second driving mechanism simultaneously restricts the first layer pressing ring 26 and the second layer pressing ring 26. This process is repeated for each layer pressing ring 26 that needs to press the diaphragm 10.

[0049] Furthermore, multiple support seats 27 are arranged circumferentially inside the end body 1. Each support seat 27 is slidably connected to the end body 1 in the radial direction, and each support seat 27 is connected to the end body 1 in the sliding direction by a first elastic element. When the transmission section 21 is driven by the first driving mechanism to move towards the diaphragm 10, each support seat 27 gradually approaches the sound transmission tube 11 under the elastic force of the first elastic element connected to it. The second driving mechanism includes a driving source 28 disposed on one of the support seats 27. The output end of the driving source 28 is fixedly connected to a lead screw 29. Two moving blocks 31 with opposite rotation directions are screwed onto the lead screw 29. A slide rod 30 is fixedly connected to each of the other support seats 27. Two moving blocks 31 are slidably disposed on the slide rod 30. A transmission ring 32 is slidably disposed on each side of the diaphragm 10 in the axial direction. The transmission ring 32 is connected to each moving block 31 at the corresponding position through a telescopic rod 33, and a push rod 34 is installed on each moving block 31.

[0050] Specifically, when the pressure rings 26 of different layers press the diaphragm 10, the component that needs to be moved by the second drive mechanism to move the pressure rings 26 gradually approaches the sound tube 11 radially. That is, when the diaphragm 10 undergoes plastic deformation and the sealing effect between it and the sealing ring 12 deteriorates, the first drive component pushes the transmission section 21 closer to the left side of the diaphragm 10. Then, the transmission section 21 drives the sealing ring 12 to adhere tightly to the left side of the diaphragm 10 through the stroke amplification mechanism. At this time, the movement of the transmission section 21 partially relieves the restriction on the support seat 27, allowing the support seat 27 to approach the sound tube 11 radially by a certain distance under the elastic force of the first elastic element connected to it. That is, the transmission section 21 is provided with a first inclined surface, and each support seat 27 is provided with a second inclined surface. The first inclined surface and the second inclined surface abut against each other. The transmission section 21 restricts the support seat 27 from being subjected to the first elastic force. When the transmission section 21 moves to the right, driven by the elastic force of the elastic element, the second inclined surface and the first inclined surface will separate. Then, driven by the first elastic element, the second inclined surface moves radially and abuts against the first inclined surface again. As the transmission section 21 gradually approaches the left side of the diaphragm 10, the support seat 27 will also gradually approach the sound tube 11. The movement of one of the support seats 27 will drive the drive source 28 connected to it to move synchronously. The movement of the other support seat 27 will drive the slide rod 30 connected to it to move synchronously. Thus, the moving block 31 set on the screw and the moving block 31 set on the slide rod 30 will both move. The telescopic rod 33 connected between the moving block 31 and the transmission ring 32 will extend. The push rod 34 set on the moving block 31 will move from the first layer ring 26 to the last layer ring 26.

[0051] When the drive source 28 drives the lead screw 29 to rotate, the two moving blocks 31 on the lead screw 29 move closer to each other. The two moving blocks 31 will drive the two transmission rings 32 to move closer to each other through their respective connected telescopic rods 33. The two transmission rings 32 will then drive the two moving blocks 31 on each slide rod 30 to move closer to each other through their respective connected telescopic rods 33. That is, the two moving blocks 31 on the same lead screw 29 or the same slide rod 30 move closer to each other, which will drive the two push rods 34 connected to them to move closer to each other and push the two pressure rings 26 at the corresponding left and right positions to move closer to each other to press the diaphragm 10.

[0052] Furthermore, the support base 27 restricts the pressure rings 26 in descending order of size in the radial direction. During the movement of the support base 27 toward the sound tube 11, the restriction on each pressure ring 26 is released in descending order of size.

[0053] Specifically, when the pressure ring 26 is not in use, the first pressure ring 26 is fitted onto the outer wall of the second pressure ring 26, the second pressure ring 26 is fitted onto the outer wall of the third pressure ring 26, and so on. Therefore, there is friction between the pressure rings 26. When the first pressure ring 26 is pushed to move axially, the second pressure ring 26 may be moved along with it. When the second pressure ring 26 loses the support of the outer wall of the third pressure ring 26, it will fall off its original horizontal position under the action of gravity. After that, it will be difficult for the push rod 34 to push it to the diaphragm 10. Therefore, in this embodiment, when the distance between the support base 27 and the sound tube 11 is equal to or greater than the radial thickness of each pressure ring 26, the push rod 34 can push away the upper pressure ring 26. The lower pressure ring 26 will not move with the upper pressure ring 26 even if it is subjected to friction. This can avoid the above situation.

[0054] The plastic deformation caused by metal fatigue in diaphragm 10 changes gradually. Prematurely applying pressure ring 26 to the junction between diaphragm 10 and end body 1 or the junction between the previous and non-junction points of pressure ring 26 will not maximize the utilization of diaphragm 10. This is because prematurely applying pressure ring 26 to diaphragm 10 will inevitably press down on areas of diaphragm 10 near the center of the junction where no obvious plastic deformation has yet occurred. Therefore, the constraint imposed by support seat 27 on each pressure ring 26 allows for smaller plastic deformation of diaphragm 10, i.e., sealing ring 1. When the diaphragm 10 is pressed tightly, the movement distance is small and insufficient to press the diaphragm 10 with the pressure ring 26. The pressure ring 26 is limited by the support seat 27. Only when the radial movement distance of the support seat 27 is equal to or greater than the radial thickness of each pressure ring 26, the distance that the sealing ring 12 moves from the initial position is also relatively large. At this time, the fatigue at the junction of the diaphragm 10 and the end body 1 or the upper pressure ring 26 and the non-connection point will be more serious. At this time, the pressure ring 26 needs to be pushed to the diaphragm 10 to press the diaphragm 10.

[0055] Preferably, the end of the push rod 34 away from the moving block 31 includes a support portion 340 and a push portion 341. While the push portion 341 pushes the pressure ring 26 to move, the support portion 340 lifts up from the inner wall of the pressure ring 26. Specifically, as mentioned above, when the next layer of pressure ring 26 needs to press the diaphragm 10, the push rod 34 needs to be reset to bring the previous layer back, and then push the upper and lower layers together to press the diaphragm 10. Otherwise, the upper layer of pressure ring 26 will move down under its own gravity, affecting the pressing of the diaphragm 10 by the next layer. Therefore, in this embodiment, the push rod 34 is divided into a support portion 340 and a push portion 341. While the push portion 341 pushes the pressure ring 26 to move, the support portion 340 lifts up from the inner wall of the pressure ring 26. In this way, during the back-and-forth movement of the pressure ring 26, it can basically remain at the same horizontal position as the initial position, thereby successfully pressing the diaphragm 10.

[0056] Firstly, each time the next layer of pressure ring 26 needs to press the diaphragm 10, the previous layer of pressure ring 26 has to go back and forth again. Secondly, each time the diaphragm 10 loses the pressure of the pressure ring 26, the areas where it was originally severely plastically deformed will become plastically deformed again without restraint. This makes the overall plastic deformation of the diaphragm 10 more severe, and the distance that the sealing ring 12 moves becomes longer. After the diaphragm 10 is pressed down by the pressure ring 26 again, part of its plastic deformation will return and exert a large compressive force on the sealing ring 12. Therefore, the sealing ring 12 has to retreat a certain distance. Otherwise, the interaction force between the sealing ring 12 and the diaphragm 10 will be too large, and the compressed gas will not be able to drive the diaphragm 10 to vibrate. In summary, this has an adverse effect on the pressing of the diaphragm 10 and the adjustment of the interaction force between the sealing ring 12 and the diaphragm 10.

[0057] In this embodiment, a locking mechanism is provided on the end body 1. After each lamination ring 26 presses the diaphragm 10, the locking mechanism can lock the lamination ring 26. After that, the movement of the second drive mechanism will not affect the lamination ring 26 pressing the diaphragm 10, which can also solve the above-mentioned problems.

[0058] The locking mechanism includes multiple transmission rods 35 arranged circumferentially upwards on each layer of pressure ring 26. One end of each transmission rod 35 is fixedly connected to the pressure ring 26, and the other end is provided with a pressing block 36 through sliding friction. Each pressing block 36 corresponds to a push rod 34. When the push rod 34 moves towards the diaphragm 10, it contacts the pressing block 36, pushing and supporting it. The push rod 34 also pushes the transmission rod 35 through the pressing block 36. When the transmission rod 35 moves the pressure ring 26, due to the friction between the pressing block 36 and the transmission rod 35, there is no relative movement between them. When the pressure ring 26 contacts the diaphragm 10, the pressure ring... When the movement of 26 is restricted, the push rod 34 continues to push the pressing block 36, overcoming friction, and the pressing block 36 will move relative to the transmission rod 35. Multiple pairs of locking rods 37 are arranged circumferentially at the connection between the left end cover 14 and the right end cover 15. Each pair of locking rods 37 consists of two rods, respectively located on the left end cover 14 and the right end cover 15. The locking rods 37 slide radially, and are slidably connected to the left end cover 14 and the right end cover 15 via a second elastic element. Multiple locking holes 38 are arranged circumferentially on the pressure ring 26, with each locking rod 37 corresponding to one of the multiple push rods 34. 8 corresponds one-to-one with multiple locking rods 37. When the pressing block 36 is pushed by the push rod 34 and moves relative to the transmission rod 35, the pressing block 36 will press the locking rod 37 radially into the locking hole 38 on the pressure ring 26. In this way, the position of the pressure ring 26 is restricted, and the position of the locking rod 37 is restricted by the pressing block 36, thereby achieving the purpose of locking the position of the pressure ring 26 after pressing the diaphragm 10. The pressing block 36 is provided with a first wedge surface 39, and the locking rod 37 is provided with a second wedge surface 40. When the first wedge surface 39 presses the second wedge surface 40, the locking rod 37 is inserted into the locking hole 38 radially. When the first wedge surface 39 and the second wedge surface 40 are misaligned, the pressing block 36... The locking rod 37 abuts against the axially parallel surface (adjacent to the first wedge surface 39) and the axially parallel surface (adjacent to the second wedge surface 40) of the locking rod 37. Thus, the locking rod 37 will not reset under the rebound force of the second elastic element. When the next layer of pressure ring 26 needs to press the diaphragm 10, the first wedge surface 39 on the corresponding pressing block 36 of the pressure ring 26 will press the corresponding second wedge surface 40, thereby pushing the locking rod 37 further radially. Thus, the locking rod 37 can continue to be inserted into the locking hole 38 on the previous layer of pressure ring 26 or into the locking hole 38 on the next layer of pressure ring 26, thereby locking the pressure ring 26 of each layer of pressing diaphragm 10.

[0059] In all embodiments of the present invention, whether it is the radial movement of the lead screw or the radial movement of the slide bar 30, both are sealed with the end body 1 by dynamic sealing to prevent the air intake chamber 16 from communicating with the breathing chamber 17. Dynamic sealing is existing technology and will not be described in detail.

[0060] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A sonic soot blower with temperature measurement function, comprising an end body mounted on a base, a diaphragm fixedly connected inside the end body, a sound transmission tube provided on one side of the end body, the diaphragm abutting against one end of the sound transmission tube via a sealing ring when not vibrating, and a horn provided at the other end of the sound transmission tube, characterized in that, The sealing ring is slidably disposed at one end of the sound transmission tube along the elastic deformation direction of the diaphragm, and further includes: A pressure testing mechanism used to detect changes in the interaction force between the diaphragm and the sealing ring; The first drive mechanism controls the movement of the sealing ring based on the detection signal from the pressure detection mechanism; It is also equipped with a temperature sensor, which is used to detect temperature changes inside the furnace. The pressure detection mechanism includes a contact that contacts the diaphragm, a transmission section that transmits power to the first driving mechanism, and a detection section that detects the pressure exerted on the contact by the diaphragm. The contact and the transmission section are connected through the detection section. The contact moves the sealing ring via a connecting rod.

2. The acoustic soot blower with temperature measurement function according to claim 1, characterized in that, An annular groove is provided on one end face of the sound transmission tube, and the sealing ring is slidably disposed in the axial direction of the annular groove.

3. The acoustic soot blower with temperature measurement function according to claim 1, characterized in that, The transmission section drives the sealing ring to move via a stroke amplification mechanism.

4. The acoustic soot blower with temperature measurement function according to claim 3, characterized in that, The stroke amplification mechanism includes a plurality of first swing arms and a plurality of second swing arms arranged circumferentially within the end body. The plurality of first swing arms and the plurality of second swing arms correspond one-to-one, and both the first swing arms and the second swing arms are connected to the end body by rotation. The rotation point of the second swing arm and the end body can be adjusted in the length direction of the second swing arm. When the transmission section moves, it drives the first swing arms to swing, and the first swing arms drive the second swing arms to swing so as to bring the sealing ring close to the diaphragm.

5. The acoustic soot blower with temperature measurement function according to claim 2, characterized in that, The end body is provided with a set of pressure rings on each side of the diaphragm along the axial direction. Each set of pressure rings has a number of rings and their radial dimensions increase sequentially. The rings of the same size in the two sets of pressure rings are axially opposite each other. The system also includes a second driving mechanism. When the pressure detection mechanism detects that the pressure between the contact and the diaphragm has decreased, the second driving mechanism sequentially drives the two corresponding pressure rings along the axial direction to move closer to each other to restrict the diaphragm, according to the order of the radial dimensions of the pressure rings from large to small.

6. The acoustic soot blower with temperature measurement function according to claim 5, characterized in that, Multiple support seats are arranged circumferentially in parallel within the end body. Each support seat is slidably connected to the end body in the radial direction, and a first elastic element is connected between each support seat and the end body in the sliding direction. When the transmission section is driven by the first driving mechanism to move towards the diaphragm, each support seat gradually approaches the sound tube under the elastic force of the first elastic element connected to it. The second driving mechanism includes a driving source disposed on one of the support seats. The output end of the driving source is fixedly connected to a lead screw, and two moving blocks with opposite rotation directions are screwed onto the lead screw. A slide rod is fixedly connected to each of the other support seats, and two moving blocks are slidably disposed on the slide rod. A transmission ring is slidably disposed on each side of the diaphragm in the end body. The transmission ring is connected to each moving block at the corresponding position through a telescopic rod, and a push rod is installed on each moving block.

7. The acoustic soot blower with temperature measurement function according to claim 6, characterized in that, The support seat restricts the pressure rings of decreasing size in a radial direction. During the movement of the support seat toward the sound tube, the restriction is released on each pressure ring in a decreasing order of size.

8. The acoustic soot blower with temperature measurement function according to claim 6, characterized in that, The end of the push rod away from the moving block includes a support and a pusher. The support lifts the pressure ring from the inner wall of the pressure ring while the pusher pushes the pressure ring to move.

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