Anti-blocking and soot-blowing device for boiler

Abstract

The utility model discloses a prevent boiler with anti -blocking soot blowing device, including harrow type soot blowing mechanism, harrow type soot blowing mechanism includes the connecting pipe for and outside gas supply equipment connection, and the end of connecting pipe is provided with the valve, and the other side fixed connection of valve has the extension pipe, and the other side fixed connection of extension pipe has the connecting frame, and the outside fixed connection of connecting frame is used for adjusting the adjusting mechanism of jet height, and the both sides of connecting frame are installed respectively and are used for detecting the detection clamping mechanism of dust thickness, and detection clamping mechanism includes the ultrasonic detector of installing in the both sides of connecting frame, can real -time accurate measurement dust thickness in boiler through ultrasonic detector, and will data transmission give the controller of control valve, and the controller controls air pump, and the output of air pump passes through connecting rod and push rod etc. component, and the jet height of adjusting the spray head, when dust is thicker, and the spray head moves down, and enhances soot blowing strength, when dust is thinner, and the spray head moves up, and prevent the wind power too big damage pipeline.

Description

Technical Field

[0001] This utility model relates to the field of boiler soot blowing technology, specifically an anti-clogging soot blowing device for boilers. Background Technology

[0002] During operation, coal-fired boilers accumulate ash on their heating surfaces and flue gas ducts, leading to low energy conversion rates, preventing them from operating under optimal conditions, and resulting in inefficient energy utilization and reduced energy efficiency. The energy efficiency of a boiler system directly determines its power generation and heating efficiency. Improving the coal combustion efficiency of a boiler system not only saves coal consumption but also greatly contributes to environmental protection. Using anti-clogging ash-blowing devices for coal-fired boilers can effectively clean the flue gas ducts, thereby improving energy conversion efficiency.

[0003] Traditional soot blowing equipment typically operates according to a pre-set, fixed program. The jet height is essentially fixed after installation and commissioning, making it difficult to flexibly adjust according to the actual ash accumulation inside the boiler. On the one hand, when some areas of the boiler have severe ash accumulation, a fixed jet height cannot effectively remove the ash, causing it to continue to accumulate, affecting the boiler's heat exchange efficiency, increasing energy consumption, and reducing the overall operating performance of the boiler. On the other hand, in areas with less ash accumulation, an excessively low jet height not only wastes energy but may also cause unnecessary erosion and wear on the pipe walls inside the boiler, shortening the pipe's service life, increasing equipment maintenance costs, and creating safety hazards.

[0004] Therefore, this utility model provides a boiler anti-clogging soot blowing device to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a boiler anti-clogging soot blowing device, which solves the aforementioned problems.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a boiler anti-clogging soot blowing device, including a rake-type soot blowing mechanism, wherein the rake-type soot blowing mechanism includes a connecting pipe for connecting to an external gas supply device, a valve is provided at the end of the connecting pipe, an extension pipe is fixedly connected to the other side of the valve, and a connecting frame is fixedly connected to the other side of the extension pipe;

[0007] A control valve with a controller is fixedly connected to the top of the connecting pipe, and the air inlet of the control valve is connected to the connecting pipe.

[0008] An adjustment mechanism for adjusting the jet height is fixedly connected to the outside of the connecting frame. The adjustment mechanism includes a sleeve fixedly connected to the bottom of the connecting frame, and a nozzle is slidably connected inside the sleeve.

[0009] The adjustment mechanism also includes an air pump fixedly connected to the outside of the connecting frame. A connecting rod is fixedly connected to the output end of the air pump, and a push rod is fixedly connected to the other side of the connecting rod. The push rod is fixedly connected to the nozzle. The air inlet at the input end of the air pump is connected to the air outlet of the control valve through an air pipe.

[0010] The connecting frame is equipped with a detection clamping mechanism for detecting dust thickness on both sides. The detection clamping mechanism includes an ultrasonic detector installed on both sides of the connecting frame. The ultrasonic detector is connected to the controller on the control valve.

[0011] Preferably, the connecting frame has a ventilation opening, and the side of the ventilation opening closest to the ultrasonic detector is flush with the surface of the ultrasonic detector.

[0012] Preferably, a limiting groove is formed inside the sleeve, and a limiting block is fixedly connected to the top of the nozzle, with the limiting block being slidably limited and connected inside the limiting groove.

[0013] Preferably, the connecting frame has mounting slots at both ends, and the ultrasonic detector is fixedly connected to the inner side of the connecting frame near the ultrasonic detector, and the ultrasonic detector is inserted into both ends of the connecting frame through the mounting rod.

[0014] Preferably, each end of the connecting frame is fixedly connected to two symmetrically arranged clamping rods, the distance between the two clamping rods is the same as the width of the ultrasonic detector, and the ultrasonic detector is arranged between the two clamping rods.

[0015] Preferably, the mounting groove has an internal groove, and an annular airbag is fixedly connected inside the internal groove. The two clamping grooves have clamping grooves on opposite sides, and clamping airbags are fixedly connected inside the clamping grooves. The clamping airbags and the annular airbags are connected by a connecting pipe. Both the clamping airbags and the annular airbags are filled with damping fluid. Beneficial effects

[0016] This utility model provides an anti-clogging soot blowing device for boilers. Compared with the prior art, it has the following advantages:

[0017] (1) The boiler uses an anti-clogging soot blowing device. Through an ultrasonic detector, it can accurately measure the thickness of dust inside the boiler in real time and transmit the data to the controller of the control valve. The controller controls the air pump. The output end of the air pump adjusts the jet height of the nozzle through components such as connecting rods and push rods. When the dust is thick, the nozzle moves down to increase the soot blowing force; when the dust is thin, the nozzle moves up to prevent the wind force from damaging the pipeline.

[0018] (2) The anti-clogging soot blowing device for the boiler uses a mounting groove, clamping rod, and annular airbag and clamping airbag on the connecting frame. The annular airbag in the mounting groove and the clamping airbag in the clamping groove are connected by a connecting pipe. The damping fluid inside can effectively buffer the vibration generated by the operation of the equipment, and achieve the effect of stable fixation and effective protection of the ultrasonic detector. At the same time, the ventilation port on the connecting frame can discharge the internal gas and clean the dust attached to the ultrasonic detector, so as to avoid it from being interfered with by dust, thereby ensuring the accuracy of measurement and the stability of the equipment. Attached Figure Description

[0019] Figure 1 This is a perspective view of the external structure of this utility model;

[0020] Figure 2 This is a perspective view of the external structure of this utility model from another angle;

[0021] Figure 3 This is an exploded view of the detection clamping mechanism of this utility model;

[0022] Figure 4 This is a partial sectional view of the connecting frame of this utility model;

[0023] Figure 5 This is a partial cross-sectional view of the sleeve and connecting frame of this utility model;

[0024] Figure 6 This is the utility model Figure 3 Enlarged view of point A in the middle;

[0025] Figure 7 This is the utility model Figure 4 Enlarged view of section B in the middle.

[0026] In the diagram: 1. Rake-type soot blowing mechanism; 11. Connecting pipe; 12. Valve; 13. Extension pipe; 14. Connecting frame; 15. Ventilation port; 16. Mounting slot; 2. Detector clamping mechanism; 21. Ultrasonic detector; 22. Mounting rod; 23. Clamping rod; 24. Clamping slot; 25. Clamping airbag; 26. Connecting pipe; 27. Annular airbag; 3. Adjustment mechanism; 31. Air pump; 32. Connecting rod; 33. Push rod; 34. Sleeve; 35. Limiting slot; 36. Nozzle; 37. Limiting block; 38. Air pipe; 4. Control valve. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0028] Please see Figures 1-7 A boiler anti-clogging soot blowing device includes a rake-type soot blowing mechanism 1. The rake-type soot blowing mechanism 1 includes a connecting pipe 11 for connecting to an external gas supply device. A valve 12 is provided at the end of the connecting pipe 11. An extension pipe 13 is fixedly connected to the other side of the valve 12. A connecting frame 14 is fixedly connected to the other side of the extension pipe 13.

[0029] A control valve 4 with a controller is fixedly connected to the top of the connecting pipe 11, and the air inlet of the control valve 4 is connected to the connecting pipe 11.

[0030] An adjustment mechanism 3 for adjusting the jet height is fixedly connected to the outside of the connecting frame 14. The adjustment mechanism 3 includes a sleeve 34 fixedly connected to the bottom of the connecting frame 14, and a nozzle 36 is slidably connected inside the sleeve 34.

[0031] The adjustment mechanism 3 also includes an air pump 31 fixedly connected to the outside of the connecting frame 14. The output end of the air pump 31 is fixedly connected to a connecting rod 32, and the other side of the connecting rod 32 is fixedly connected to a push rod 33. The push rod 33 is fixedly connected to the nozzle 36. The air inlet at the input end of the air pump 31 is connected to the air outlet of the control valve 4 through an air pipe 38. A limiting groove 35 is opened inside the sleeve 34. A limiting block 37 is fixedly connected to the top of the nozzle 36. The limiting block 37 is slidably limited and connected inside the limiting groove 35. Mounting grooves 16 are opened at both ends of the connecting frame 14. An ultrasonic detector 21 is fixedly connected to an mounting rod 22 near the inner side of the connecting frame 14. The ultrasonic detector 21 is inserted into both ends of the connecting frame 14 through the mounting rod 22.

[0032] The connecting frame 14 is equipped with a detection clamping mechanism 2 for detecting the thickness of dust on both sides. The detection clamping mechanism 2 includes an ultrasonic detector 21 installed on both sides of the connecting frame 14. The ultrasonic detector 21 is connected to the controller signal on the control valve 4.

[0033] Place the device at the location on the boiler that needs cleaning, connect the external gas supply equipment, and open valve 12. At this time, the high-pressure gas generated by the external gas supply equipment can be ejected through connecting pipe 11, valve 12, extension pipe 13, connecting frame 14, sleeve 34, and nozzle 36, preparing for soot blowing. Start the ultrasonic detector 21, which emits ultrasonic waves into the boiler. When the ultrasonic waves encounter dust during propagation, they are reflected back. The detector receives the reflected waves and calculates the distance to the dust based on the time difference between transmission and reception and the speed of ultrasonic wave propagation in air, thus determining the dust thickness. Afterward, the detection signal is transmitted in real time to the controller on control valve 4.

[0034] The controller of control valve 4 receives and processes the signal from ultrasonic detector 21. When it is determined that the dust is thick, the controller controls control valve 4 to perform the air intake step, allowing air pump 31 to intake. After air pump 31 starts, its output end drives push rod 33 to move through connecting rod 32. Push rod 33 pushes nozzle 36 to slide inside sleeve 34. Since a limiting groove 35 is opened inside sleeve 34, the limiting block 37 at the top of nozzle 36 slides and limits within the limiting groove 35, ensuring stable lifting and lowering of nozzle 36, thereby realizing the adjustment of air jet height and enabling nozzle 36 to better align with the dust accumulation position.

[0035] After adjusting the jet height of nozzle 36, high-pressure gas is ejected from nozzle 36 to clean the ash accumulated inside the boiler. During the cleaning process, ultrasonic detector 21 continuously monitors the dust thickness and feeds the data back to control valve 4. Control valve 4 continuously adjusts the air intake of air pump 31 based on real-time data, dynamically adjusting the jet height of nozzle 36 to ensure the soot blowing effect. When the dust is thick, nozzle 36 moves downward to clean the thicker dust, while when the dust is thin, nozzle 36 moves upward to avoid excessive airflow that could cause erosion and wear on the pipe walls inside the boiler.

[0036] The ultrasonic detector 21 uses the BJ21 series ultrasonic thickness gauge, with a measurement range of 0.8mm to 600mm, and has high-precision thickness measurement capabilities; the control valve 4 uses the Rexroth 4WRAB6W series; the corresponding model is selected according to the actual use of the equipment. Example

[0037] Please see Figures 1-7This embodiment provides a technical solution based on embodiment one: a vent 15 is provided on the connecting frame 14, the side of the vent 15 near the ultrasonic detector 21 is flush with the surface of the ultrasonic detector 21, two symmetrically arranged clamping rods 23 are fixedly connected to both ends of the connecting frame 14, the distance between the two clamping rods 23 is the same as the width of the ultrasonic detector 21, and the ultrasonic detector 21 is arranged between the two clamping rods 23. An internal groove is provided inside the mounting groove 16, and an annular airbag 27 is fixedly connected inside the internal groove. A clamping groove 24 is provided on the opposite side of the two clamping grooves 24, and a clamping airbag 25 is fixedly connected inside the clamping groove 24. The clamping airbag 25 and the annular airbag 27 are connected through a connecting pipe 26, and the clamping airbag 25 and the annular airbag 27 are filled with damping fluid.

[0038] The mounting slots 16 at both ends of the connecting frame 14, together with the mounting rods 22 of the ultrasonic detector 21 and the symmetrically arranged clamping rods 23, jointly fix the ultrasonic detector 21. The annular airbag 27 inside the mounting slot 16 and the clamping airbag 25 inside the clamping slot 24 are connected by a connecting pipe 26 and filled with damping fluid, which can buffer the vibration of the equipment during operation. At the same time, when the clamping airbag 25 or the annular airbag 27 is squeezed, the damping fluid inside can be transferred to each other through the connecting pipe 26, thereby effectively preventing the ultrasonic detector 21 from vibrating, improving the accuracy of measurement and the stability of the equipment. The ventilation port 15 opened on the connecting frame 14 allows the gas inside the connecting frame 14 to be discharged from the ventilation port 15, thereby cleaning the dust attached to the ultrasonic detector 21, preventing the ultrasonic detector 21 from being interfered with by dust, and improving the accuracy of dust thickness detection.

[0039] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0040] Working principle:

[0041] Preparation for soot blowing: Place the device at the location of the boiler to be cleaned, connect the external gas supply equipment, open valve 12, and high-pressure gas is sprayed out through connecting pipe 11, valve 12, extension pipe 13, connecting frame 14, sleeve 34 and nozzle 36 to prepare for soot blowing.

[0042] Detecting dust thickness: The ultrasonic detector 21 is activated. The ultrasonic waves emitted by the detector are reflected by the dust. The detector calculates the distance to the dust based on the time difference between the emission and reception of the reflected waves and the speed of ultrasonic wave propagation in the air, and obtains the dust thickness. The detection signal is then transmitted to the controller of the control valve 4 in real time.

[0043] Adjusting the blowing height: After receiving the signal, the controller of the control valve 4 determines that the dust is thick. It controls the control valve 4 to allow the air pump 31 to enter. The air pump 31 starts and drives the push rod 33 through the connecting rod 32, pushing the nozzle 36 to slide in the sleeve 34. The limit block 37 is limited in the limit groove 35 to ensure that the nozzle 36 rises and falls stably and is aligned with the dust accumulation position.

[0044] Soot blowing operation: After adjusting the jet height of nozzle 36, high-pressure gas is sprayed out to clean the soot. During cleaning, ultrasonic detector 21 continuously monitors the dust thickness and feeds it back to control valve 4. Control valve 4 adjusts the air intake of air pump 31 accordingly and dynamically adjusts the jet height of nozzle 36 to ensure the soot blowing effect and avoid erosion and wear on the boiler pipe wall.

[0045] Equipment Fixing and Protection: The ultrasonic detector 21 is fixed by the mounting slots 16, mounting rods 22 and clamping rods 23 at both ends of the connecting frame 14. The annular airbag 27 in the mounting slot 16 and the clamping airbag 25 in the clamping slot 24 are connected by the connecting pipe 26 and filled with damping fluid to buffer vibration, prevent the ultrasonic detector 21 from vibrating, improve measurement accuracy and equipment stability. The vent 15 on the connecting frame 14 discharges internal gas, cleans the dust on the ultrasonic detector 21, and improves detection accuracy.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A boiler anti-clogging soot blowing device, characterized in that: The device includes a rake-type soot blowing mechanism (1), which includes a connecting pipe (11) for connecting to an external air supply device. A valve (12) is provided at the end of the connecting pipe (11), and an extension pipe (13) is fixedly connected to the other side of the valve (12). A connecting frame (14) is fixedly connected to the other side of the extension pipe (13). The top of the connecting pipe (11) is fixedly connected to a control valve (4) with a controller, and the air inlet of the control valve (4) is connected to the connecting pipe (11). An adjustment mechanism (3) for adjusting the jet height is fixedly connected to the outside of the connecting frame (14). The adjustment mechanism (3) includes a sleeve (34) fixedly connected to the bottom of the connecting frame (14). A nozzle (36) is slidably connected inside the sleeve (34). The adjustment mechanism (3) also includes an air pump (31) fixedly connected to the outside of the connecting frame (14). The output end of the air pump (31) is fixedly connected to a connecting rod (32). The other side of the connecting rod (32) is fixedly connected to a push rod (33). The push rod (33) is fixedly connected to the nozzle (36). The air inlet at the input end of the air pump (31) is connected to the air outlet of the control valve (4) through an air pipe (38). The connecting frame (14) is equipped with a detection clamping mechanism (2) for detecting the thickness of dust on both sides. The detection clamping mechanism (2) includes an ultrasonic detector (21) installed on both sides of the connecting frame (14). The ultrasonic detector (21) is connected to the controller signal on the control valve (4).

2. The anti-clogging soot blowing device for boilers according to claim 1, characterized in that: The connecting frame (14) has a ventilation opening (15), and the side of the ventilation opening (15) near the ultrasonic detector (21) is flush with the surface of the ultrasonic detector (21).

3. The anti-clogging soot blowing device for boilers according to claim 1, characterized in that: The sleeve (34) has a limiting groove (35) inside, and the top of the nozzle (36) is fixedly connected to a limiting block (37), which is slidably limited inside the limiting groove (35).

4. The anti-clogging soot blowing device for boilers according to claim 1, characterized in that: The connecting frame (14) has mounting slots (16) at both ends. The ultrasonic detector (21) is fixedly connected to the inner side of the connecting frame (14) with a mounting rod (22). The ultrasonic detector (21) is inserted into both ends of the connecting frame (14) through the mounting rod (22).

5. A boiler anti-clogging soot blowing device according to claim 4, characterized in that: The connecting frame (14) has two symmetrically arranged clamping rods (23) fixedly connected to both ends. The distance between the two clamping rods (23) is the same as the width of the ultrasonic detector (21), and the ultrasonic detector (21) is arranged between the two clamping rods (23).

6. A boiler anti-clogging soot blowing device according to claim 5, characterized in that: The mounting groove (16) has an internal groove, and an annular airbag (27) is fixedly connected inside the internal groove. A clamping groove (24) is provided on the opposite side of the two clamping rods (23). A clamping airbag (25) is fixedly connected inside the clamping groove (24). The clamping airbag (25) and the annular airbag (27) are connected by a connecting pipe (26). The clamping airbag (25) and the annular airbag (27) are both filled with damping fluid.

Images