Anti-coking structure of flue gas passage

Abstract

The utility model provides a kind of dust blocking structure of flue gas passage, it is related to flue gas treatment technical field, comprising: support frame;The upper end of support frame is fixed with bottom box, bottom box's lower end is welded with bottom hopper, the left and right ends of bottom hopper are all equipped with vibration motor by bolt mounting, the right end of bottom hopper is connected with smoke inlet pipe, the inside fixed plate of smoke inlet pipe is equipped with two groups of linear bearings by bolt mounting, two groups of linear bearings are all equipped with movable knock stick;In the utility model, eccentric wheel, cooperation plate and knock stick component installed on the fixed plate in smoke inlet pipe, under the drive of No. 1 motor and gearbox, eccentric wheel continues to rotate and drives cooperation plate to push and pull frame, and then make knock stick high-frequency knock the inner wall of smoke inlet pipe, effectively shake off adhered dust, prevent dust from accumulating in initial section of smoke inlet pipe, ensure that flue gas can smoothly enter subsequent flue, maintain good air intake effect, improve the air supply stability required for boiler combustion.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, and in particular to an anti-clogging structure for flue gas channels. Background Technology

[0002] In today's energy supply system, thermal power plants, as a crucial link in electricity production, bear the heavy responsibility of ensuring stable electricity supply to society. The boiler, its core equipment, is like the "heart" of the thermal power plant, continuously converting the chemical energy of fuel into heat energy, which then drives the steam turbine to generate electricity. The continuous, efficient, and stable operation of the boiler directly determines whether the thermal power plant can reliably transmit electricity to the grid to meet the electricity needs of industrial and agricultural production and residential life. However, in actual operating scenarios, the flue gas passage in the boiler system has become a "weak link" prone to many problems, frequently encountering ash blockage issues. Therefore, an anti-ash blockage structure for the flue gas passage needs to be designed.

[0003] Traditional thermal power plant boiler flue gas passages lack effective anti-clogging designs, allowing dust to easily adhere and accumulate inside the passages after prolonged operation. Frequent manual cleaning is not only labor-intensive and inefficient, but also presents numerous inconveniences and safety hazards during boiler operation, failing to meet the demands of modern thermal power plants for efficient, stable, and safe operation. Utility Model Content

[0004] This disclosure relates to an anti-clogging structure for flue gas channels, in order to solve the technical problems mentioned in the background art.

[0005] In a first aspect, this disclosure provides an anti-clogging structure for a flue gas passage, specifically including: a support frame;

[0006] The upper end of the support frame is fixed with a base box, and the upper end of the base box is bolted to a top box. The lower end of the base box is welded with a bottom hopper. Vibration motors are bolted to both the left and right ends of the bottom hopper. A solenoid valve is bolted to the lower end of the bottom hopper. The lower end of the solenoid valve is provided with two sets of arc-shaped through slots. A ash storage bucket is installed at the lower end of the solenoid valve. Two sets of protruding structures are fixed on the ash storage bucket. The two sets of protruding structures are rotatably snapped into the two sets of arc-shaped through slots at the lower end of the solenoid valve. The right end of the bottom hopper is connected to a smoke inlet pipe. A fixing plate is fixed inside the smoke inlet pipe. Two sets of linear bearings are bolted to the fixing plate. Movable striking rods are installed on both sets of linear bearings. A frame is fixed between the two sets of striking rods. An eccentric wheel is installed on the fixing plate through bearings. A mating plate is connected to the eccentric wheel through a pin shaft. The mating plate moves inside the frame. A gearbox is bolted to the smoke inlet pipe. A No. 1 motor is bolted to the gearbox. The output shaft of the gearbox is connected to the rotating shaft of the eccentric wheel.

[0007] In at least some embodiments,

[0008] The bottom box is equipped with a partition plate installed inside by bolts. The partition plate has a rectangular array of 36 filter cartridges. Two sets of brackets are installed on the bottom box by bolts. Gas tanks are installed on the two sets of brackets by U-bolts. The gas tanks are connected to external high-pressure gas.

[0009] In at least some embodiments,

[0010] The upper end of the gas tank is connected to six sets of control valves, and the inside of the top box is fixed with six sets of backflush pipes. The bottom of the backflush pipes is provided with air outlets, and the front ends of the six sets of backflush pipes are respectively connected to the six sets of control valves.

[0011] In at least some embodiments,

[0012] Four sets of bearing seats are bolted to the inner walls of the left and right ends of the base box. A spiral roller rotates on the bearing seat. The spiral roller is provided with a spiral reciprocating groove. Two sets of rails are fixed on the bearing seat. Lifting seats slide on the rails.

[0013] In at least some embodiments,

[0014] The lifting seat has a movable contact wheel that moves within the helical reciprocating groove on the helical roller. The upper ends of the four sets of helical rollers are all fixed with bevel gears. The base box is equipped with four sets of No. 2 motors by bolts, and the output shafts of the four sets of No. 2 motors are all fixed with bevel gears.

[0015] In at least some embodiments,

[0016] The bevel gears on the output shafts of the four sets of No. 2 motors mesh with the bevel gears at the upper ends of the four sets of spiral rollers. A No. 1 cleaning plate is bolted to the rear side of the two sets of landing seats near the rear end of the bottom box and the front side of the two sets of landing seats near the front end of the bottom box. The two sets of No. 1 cleaning plates contact the inner walls of the rear end and front end of the bottom box, respectively. A No. 2 cleaning plate is bolted to the left side of the two sets of landing seats near the left end of the bottom box and the right side of the two sets of landing seats near the right end of the bottom box. The two sets of No. 2 cleaning plates contact the inner walls of the left and right ends of the bottom box, respectively.

[0017] In at least some embodiments,

[0018] The left side of the top box is connected to a smoke outlet pipe by bolts, and eight sets of locking screws are hinged on the top box. A top cover is installed at the top of the top box, and eight sets of locking plates are welded on the top cover. The locking plates are provided with U-shaped grooves, and the locking screws are located in the U-shaped grooves on the locking plates. Nuts are threaded onto the locking screws.

[0019] This utility model provides an anti-clogging structure for flue gas passages, which has the following beneficial effects:

[0020] In this invention, the eccentric wheel, mating plate, and striking rod assembly installed on the fixed plate inside the flue are driven by a No. 1 motor and a gearbox. The eccentric wheel rotates continuously, causing the mating plate to push and pull the frame, thereby causing the striking rod to strike the inner wall of the flue at high frequency. This effectively shakes off the attached dust, prevents dust from accumulating in the initial section of the flue, ensures that the flue gas can smoothly enter the subsequent flue, maintains a good air intake effect, and improves the stability of the air supply required for boiler combustion.

[0021] Furthermore, in this invention, the numerous filter cartridges on the partition can perform preliminary fine filtration of flue gas, intercepting most dust particles. When dust accumulates on the surface of the filter cartridges and needs to be cleaned, the external high-pressure gas connected to the gas tank is precisely introduced into the backflush pipe through the control valve. The high-pressure gas is blown out from the air outlet at the bottom of the backflush pipe, performing reverse sweeping on the filter cartridges, instantly removing the dust from the surface of the filter cartridges, restoring their good filtration performance, extending the service life of the filter cartridges, and reducing equipment maintenance costs.

[0022] Furthermore, in this invention, the dynamic cleaning system composed of the spiral roller, lifting seat, and cleaning plate inside the bottom box is highly effective. Driven by the No. 2 motor, the spiral roller rotates, causing the lifting seat to move up and down along the rail. This causes the No. 1 and No. 2 cleaning plates installed on the lifting seat to reciprocate against the front and rear inner walls and left and right inner walls of the bottom box, respectively. This thoroughly scrapes off the dust deposited in every corner of the bottom box, preventing secondary accumulation of dust inside the bottom box and keeping the inside of the bottom box clean at all times, thus providing a solid guarantee for the smooth flow of flue gas. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0024] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0025] In the attached diagram:

[0026] Figure 1 A schematic diagram of the overall structure of this application is shown;

[0027] Figure 2 A structural schematic diagram of the partition portion of this application is shown;

[0028] Figure 3 This application shows Figure 1 A magnified structural diagram of part A in the middle;

[0029] Figure 4 A schematic diagram of the backflush tube portion of this application is shown;

[0030] Figure 5A structural schematic diagram of the bottom box portion of this application is shown;

[0031] Figure 6 This application shows Figure 5 A magnified structural diagram of part B in the middle section;

[0032] Figure 7 A schematic diagram of the structure of the hopper portion of this application is shown;

[0033] Figure 8 This application shows Figure 7 A magnified structural diagram of section C;

[0034] Figure 9 A schematic diagram of the structure of the smoke inlet pipe section of this application is shown;

[0035] Figure 10 This application shows Figure 9 A magnified structural diagram of part D in the middle.

[0036] List of reference numerals

[0037] 1. Support frame; 11. Base box; 111. Partition plate; 112. Filter cartridge; 113. Bracket; 114. Gas tank; 115. Control valve; 116. No. 2 motor; 117. Bearing seat; 1171. Spiral roller; 1172. Rail rod; 1173. Lifting seat; 118. No. 2 cleaning plate; 119. No. 1 cleaning plate; 12. Top box; 121. Locking screw; 122. Backflush pipe; 123. Smoke outlet pipe; 13. Top cover; 131. Locking plate; 14. Bottom hopper; 141. Vibrating motor; 142. Solenoid valve; 143. Ash storage bin;

[0038] 2. Smoke inlet pipe; 21. Fixing plate; 211. Linear bearing; 212. Striking rod; 213. Frame; 22. Eccentric wheel; 221. Mating plate; 23. Gearbox; 231. No. 1 motor. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0040] Example 1: Please refer to Figures 1 to 10 :

[0041] This utility model proposes an anti-clogging structure for flue gas passages, including: a support frame 1;

[0042] A base box 11 is fixed to the upper end of the support frame 1. A top box 12 is bolted to the upper end of the base box 11. A hopper 14 is welded to the lower end of the base box 11. Vibration motors 141 are bolted to both the left and right ends of the hopper 14. A solenoid valve 142 is bolted to the lower end of the hopper 14. Two sets of arc-shaped through grooves are provided at the lower end of the solenoid valve 142. A ash storage bin 143 is installed at the lower end of the solenoid valve 142. Two sets of protruding structures are fixed on the ash storage bin 143. The two sets of protruding structures are respectively rotated and snapped into the two sets of arc-shaped through grooves at the lower end of the solenoid valve 142. A smoke inlet pipe 2 is connected to the right end of the hopper 14. A fixed plate 21 is fixed inside the pipe 2. Two sets of linear bearings 211 are bolted to the fixed plate 21. Movable striking rods 212 are mounted on both sets of linear bearings 211. A frame 213 is fixed between the two sets of striking rods 212. An eccentric wheel 22 is mounted on the fixed plate 21 via bearings. A mating plate 221 is connected to the eccentric wheel 22 via a pin. The mating plate 221 moves inside the frame 213. A gearbox 23 is bolted to the smoke inlet pipe 2. A first motor 231 is bolted to the gearbox 23. The output shaft of the gearbox 23 is connected to the rotating shaft of the eccentric wheel 22.

[0043] In this embodiment of the disclosure,

[0044] Inside the base box 11, a partition 111 is bolted on. The partition 111 has a rectangular array of 36 filter cartridges 112. Two sets of brackets 113 are bolted to the base box 11. Gas tanks 114 are mounted on the two sets of brackets 113 via U-bolts. The gas tanks 114 are connected to external high-pressure gas. Six control valves 115 are connected to the upper end of the gas tanks 114. Inside the top box 12, six backflush pipes 122 are fixed. Each backflush pipe 122 has an air outlet at its bottom. The front ends of the six backflush pipes 122 are connected to the six control valves 115 respectively. Its function is as follows: when a large amount of flue gas enters, the rectangular array of filter cylinders 112 can cover a large area of ​​the flue gas flow section due to its layout, effectively intercepting dust particles in the flue gas and performing preliminary filtration of the flue gas. The six sets of backflush pipes 122 inside the top box 12 and the bottom air outlet, together with the control valve 115, form a backflush cleaning system. After the control valve 115 is opened, high-pressure gas rushes along the pipe to the backflush pipe 122 and is ejected at high speed from the bottom air outlet, impacting the surface of the filter cylinder 112, peeling off the attached dust, and restoring its air permeability and filtration performance.

[0045] Example 2, based on Example 1,

[0046] Four sets of bearing seats 117 are bolted to the inner walls of both ends of the base box 11. A spiral roller 1171 rotates on each bearing seat 117, and the spiral roller 1171 has a spiral reciprocating groove. Two sets of rail rods 1172 are fixed to the bearing seats 117, and lifting seats 1173 slide on the rail rods 1172. Contact wheels move on the lifting seats 1173, and these contact wheels move within the spiral reciprocating grooves on the spiral rollers 1171. Bevel gears are fixed to the upper ends of each of the four sets of spiral rollers 1171. Four sets of secondary motors 116 are bolted to the base box 11. Bevel gears are fixed to the output shafts of each of the four sets of secondary motors 116. The bevel gears on the output shafts of the four sets of secondary motors 116 mesh with the bevel gears at the upper ends of the four sets of spiral rollers 1171. The rear sides of the two sets of lifting seats 1173 near the rear end of the base box 11 and the front sides of the base box 11 are also connected to these motors. Two sets of lifting seats 1173 at the end are each bolted with a first cleaning plate 119. The two sets of first cleaning plates 119 contact the inner walls of the rear and front ends of the bottom box 11, respectively. Two sets of second cleaning plates 118 are bolted to the left side of the two sets of lifting seats 1173 near the left end of the bottom box 11 and the right side of the two sets of lifting seats 1173 near the right end of the bottom box 11. The two sets of second cleaning plates 118 contact the inner walls of the left and right ends of the bottom box 11, respectively. Their function is to run four sets of second motors 116 to rotate four sets of spiral rollers 1171, so that the lifting seats 1173 move up and down. During the reciprocating sliding process of the lifting seats 1173, the first cleaning plate 119 can scrape off the dust deposited on the front and rear inner walls of the bottom box 11, and the second cleaning plate 118 can clean the dust on the inner walls of the left and right ends of the bottom box 11, thereby effectively preventing dust from accumulating in the corners inside the bottom box 11.

[0047] Example 3, based on Examples 1 and 2,

[0048] The left side of the top box 12 is connected to the smoke outlet pipe 123 by bolts, and eight sets of locking screws 121 are hinged on the top box 12. The top cover 13 is installed at the top end of the top box 12, and eight sets of locking plates 131 are welded on the top cover 13. The locking plates 131 are provided with U-shaped grooves, and the locking screws 121 are located in the U-shaped grooves on the locking plates 131. Nuts are threaded onto the locking screws 121. The function is that when it is necessary to inspect, maintain or clean the inside of the equipment, simply loosen the nuts, and the top cover 13 can be easily opened through the hinged structure, making the operation convenient and efficient.

[0049] The working principle of this embodiment is as follows: When the flue gas enters from the flue pipe 2, firstly, the eccentric wheel 22 on the fixed plate 21 inside the flue pipe 2 rotates continuously under the drive of the No. 1 motor 231 through the gearbox 23. When the eccentric wheel 22 rotates, it drives the mating plate 221 to move inside the frame 213 by means of the pin shaft, thereby pushing and pulling the frame 213, so that the striking rod 212 installed on the two sets of linear bearings 211 strikes the inner wall of the flue pipe 2 at high frequency. This high-frequency vibration can shake off the dust that initially adheres to the inner wall of the flue pipe 2 in the flue gas, preventing the dust from accumulating in the initial section of the flue pipe 2.

[0050] Flue gas flows into the bottom chamber 11, where 36 sets of filter cartridges 112 on the baffle 111 perform preliminary fine filtration of the flue gas. A large number of dust particles are intercepted on the surface of the filter cartridges 112. At the same time, if the surface of the filter cartridges 112 needs to be cleaned, the external high-pressure gas connected to the gas tank 114 is precisely introduced into the backflush pipe 122 in the top chamber 12 under the control of the control valve 115. The high-pressure gas is blown out from the air outlet at the bottom of the backflush pipe 122 to backflush the filter cartridges 112, instantly removing the dust from the surface of the filter cartridges 112 and restoring their good filtration performance, ensuring continuous and efficient filtration of the flue gas.

[0051] The four sets of No. 2 motors 116 are started. The bevel gears on their output shafts drive the bevel gears at the upper end of the spiral rollers 1171 to rotate, causing the spiral rollers 1171 to rotate. The spiral reciprocating grooves on the spiral rollers 1171 cause the lifting seat 1173 to slide back and forth along the rail 1172. The No. 1 cleaning plate 119 and the No. 2 cleaning plate 118 installed on the lifting seat 1173 move back and forth against the front and rear inner walls and the left and right inner walls of the bottom box 11, respectively, to thoroughly scrape off the dust deposited in the corners of the inner wall of the bottom box 11, prevent the dust from accumulating again, keep the internal passage of the bottom box 11 unobstructed, and ensure the smooth flow of flue gas. Finally, the purified flue gas is discharged in an orderly manner through the smoke outlet pipe 123 connected by bolts on the left side.

[0052] The right end of the hopper 14 is connected to the smoke inlet pipe 2, which collects the dust in the flue gas. The vibration motors 141 at its left and right ends are turned on periodically. Through high-frequency vibration, the dust adhering to the inner wall of the hopper 14 is quickly removed to prevent dust from accumulating. When ash needs to be discharged, the solenoid valve 142 is opened. Under the action of gravity and vibration, the dust falls through the arc-shaped channel at the lower end of the solenoid valve 142 into the ash storage bucket 143 installed with a rotating buckle, which is convenient for subsequent quick cleaning.

[0053] The following points should be noted in this article:

[0054] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0055] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0056] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A structure for preventing ash blockage in a flue gas passage, comprising: Support frame (1); characterized in that, The upper end of the support frame (1) is fixed with a bottom box (11), and the upper end of the bottom box (11) is bolted with a top box (12). The lower end of the bottom box (11) is welded with a bottom hopper (14). Vibration motors (141) are bolted to both the left and right ends of the bottom hopper (14). A solenoid valve (142) is bolted to the lower end of the bottom hopper (14). The lower end of the solenoid valve (142) is provided with two sets of arc-shaped through grooves. A ash storage bucket (143) is installed at the lower end of the solenoid valve (142). Two sets of protruding structures are fixed on the ash storage bucket (143). The two sets of protruding structures are respectively rotated and snapped into the two sets of arc-shaped through grooves at the lower end of the solenoid valve (142). The right end of the bottom hopper (14) is connected to a smoke inlet pipe (2). 2) is internally fixed with a fixed plate (21). Two sets of linear bearings (211) are installed on the fixed plate (21) by bolts. Each set of linear bearings (211) is equipped with a movable striking rod (212). A frame (213) is fixed between the two sets of striking rods (212). An eccentric wheel (22) is installed on the fixed plate (21) by bearings. A mating plate (221) is connected to the eccentric wheel (22) by a pin. The mating plate (221) moves inside the frame (213). A gearbox (23) is installed on the smoke inlet pipe (2) by bolts. A first motor (231) is installed on the gearbox (23) by bolts. The output shaft of the gearbox (23) is connected to the rotating shaft of the eccentric wheel (22).

2. The anti-clogging structure for a flue gas passage according to claim 1, characterized in that, The bottom box (11) is fitted with a partition (111) by bolts. The partition (111) has a rectangular array of 36 filter cartridges (112). The bottom box (11) is fitted with two sets of brackets (113) by bolts. The two sets of brackets (113) are fitted with gas tanks (114) by U-bolts. The gas tanks (114) are connected to the external high-pressure gas.

3. The anti-clogging structure for a flue gas passage according to claim 2, characterized in that, The upper end of the gas tank (114) is connected to six sets of control valves (115), and the inside of the top box (12) is fixed with six sets of backflush pipes (122). The bottom of the backflush pipes (122) is provided with air outlets, and the front ends of the six sets of backflush pipes (122) are respectively connected to the six sets of control valves (115).

4. The anti-clogging structure for a flue gas passage according to claim 2, characterized in that, Four sets of bearing seats (117) are bolted to the inner walls of the left and right ends of the base box (11). A spiral roller (1171) rotates on the bearing seat (117). The spiral roller (1171) is provided with a spiral reciprocating groove. Two sets of rail rods (1172) are fixed on the bearing seat (117). A lifting seat (1173) slides on the rail rod (1172).

5. The anti-clogging structure for a flue gas passage according to claim 4, characterized in that, The lifting seat (1173) has a movable contact wheel, which moves in the helical reciprocating groove on the helical roller (1171). The upper ends of the four sets of helical rollers (1171) are all fixed with bevel gears. The base box (11) is equipped with four sets of No. 2 motors (116) by bolts. The output shafts of the four sets of No. 2 motors (116) are all fixed with bevel gears.

6. The anti-clogging structure for a flue gas passage according to claim 5, characterized in that, The bevel gears on the output shafts of the four sets of No. 2 motors (116) mesh with the bevel gears on the upper ends of the four sets of spiral rollers (1171). A No. 1 cleaning plate (119) is bolted to the rear side of the two sets of landing seats (1173) near the rear end of the bottom box (11) and the front side of the two sets of landing seats (1173) near the front end of the bottom box (11). The two sets of No. 1 cleaning plates (119) contact the inner walls of the rear end and front end of the bottom box (11) respectively. A No. 2 cleaning plate (118) is bolted to the left side of the two sets of landing seats (1173) near the left end of the bottom box (11) and the right side of the two sets of landing seats (1173) near the right end of the bottom box (11). The two sets of No. 2 cleaning plates (118) contact the inner walls of the left and right ends of the bottom box (11) respectively.

7. The anti-clogging structure for a flue gas passage according to claim 1, characterized in that, The left side of the top box (12) is connected to the smoke outlet pipe (123) by bolts, and eight sets of locking screws (121) are hinged on the top box (12). The top cover (13) is installed on the upper end of the top box (12), and eight sets of locking plates (131) are welded on the top cover (13). The locking plates (131) are provided with U-shaped grooves, and the locking screws (121) are located in the U-shaped grooves on the locking plates (131). Nuts are threaded onto the locking screws (121).

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