High-efficiency desulfurization and soot blower for thermal power plant boiler

Abstract

The application provides a high-efficiency desulfurization and soot blower for a thermal power plant boiler, which comprises a wall box, a gas supply pipe connected to one end of the wall box, an inner gas supply pipe connected to an output end of the gas supply pipe, a walking mechanism arranged outside the inner gas supply pipe, and a soot blowing mechanism connected to an output end of the walking mechanism; the walking mechanism comprises a walking box slidably connected to the wall box, a bearing box mounted to a bottom end of the walking box, and a rotating assembly arranged on one side of the walking box; the soot blowing mechanism comprises a soot blowing gun pipe rotatably connected to a bottom end of the bearing box and arranged outside the inner gas supply pipe, and a heat preservation assembly arranged outside the inner gas supply pipe and connected to the soot blowing gun pipe; the soot blowing gun pipe can be sealed when rotating and continuously extending into the boiler, and the inner gas supply pipe can be continuously exposed and heat preserved, so that the soot blowing effect of the soot blower is improved.

Description

Technical Field

[0001] This invention relates to the technical field of boiler soot blowers, specifically to a high-efficiency desulfurization soot blower for thermal power plant boilers. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. Soot blowers are often used in boilers of thermal power plants to clean the heating surfaces of the furnace tube bundles.

[0003] According to the explosion-proof telescopic sootblower provided in patent application CN201610038777.6, the boiler includes a main beam. The front end of the main beam is fixed to the wall box, and the rear end is fixed by a rear support. A traveling box is movable along the length of the main beam. A horizontal shaft is rotatably installed at the rear end of the main beam. The horizontal shaft is driven to rotate by a power device, which is fixedly installed at the rear end of the main beam. A traveling drive mechanism that drives the traveling box to perform reciprocating linear motion is connected to the horizontal shaft. A hollow rotating main shaft is rotatably installed inside the traveling box. A hollow sootblowing gun tube is fixedly connected to the front end of the rotating main shaft. The front end of the sootblowing gun tube is closed and equipped with a nozzle. A rotating drive mechanism that drives the rotating main shaft to rotate is installed inside the traveling box. A steam transmission inner pipe is fixedly installed on the main beam. The rear end of the steam transmission inner pipe is connected to the steam source through a valve. The front end of the steam transmission inner pipe passes through the rotating main shaft and is inserted into the sootblowing gun tube. The motor does not need to move with the traveling box, thereby avoiding sparks caused by cable damage or breakage.

[0004] The aforementioned soot blower eliminates the need for the motor to move with the traveling box, thus avoiding sparks caused by cable damage or breakage. Traditional soot blowers struggle to seal the rotating soot blowing gun tube that continuously extends into the boiler, as well as to insulate the constantly exposed gas delivery pipe, thereby affecting the soot blowing effect. Summary of the Invention

[0005] This invention provides a high-efficiency desulfurization soot blower for boilers in thermal power plants to solve the technical problems mentioned in the background section.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows:

[0007] A high-efficiency desulfurization soot blower for a thermal power plant boiler includes a wall box, one end of which is connected to an air supply pipe, the output end of which is connected to an inner air supply pipe, a traveling mechanism is sleeved on the outside of the inner air supply pipe, and the output end of the traveling mechanism is connected to a soot blowing mechanism.

[0008] The walking mechanism includes a walking box slidably connected to the wall box, a bearing box installed at the bottom of the walking box, and a rotating assembly located on one side of the walking box;

[0009] The soot blowing mechanism includes a soot blowing gun tube rotatably connected to the bottom end of the bearing housing and sleeved outside the inner air supply pipe, and a heat insulation component sleeved outside the inner air supply pipe and connected to the soot blowing gun tube.

[0010] The heat insulation assembly includes an accordion-style heat insulation cover fitted over the outside of the soot blowing gun barrel, an air inlet plate connected to one end of the accordion-style heat insulation cover, and a sealing component connected to the other end of the accordion-style heat insulation cover. The sealing component is connected to the soot blowing gun barrel.

[0011] Furthermore, the rotating assembly includes a motor mounted on one side surface of the traveling box, a first sprocket connected to the outer surface of the output shaft of the motor, and a second sprocket sleeved on the outer surface of the soot blowing gun tube. The first sprocket and the second sprocket are connected by a chain. In this invention, when the chain drives the second sprocket to rotate, the second sprocket drives the soot blowing gun tube to rotate, so as to expand the spray range of the nozzle on the soot blowing gun tube when it is inserted into the boiler.

[0012] Furthermore, the sealing component includes a return air plate installed at one end of the bellows-type heat insulation cover, a first bearing rotatably connected to the end of the return air plate away from the bellows-type heat insulation cover, a second bearing connected to one end of the soot blowing gun tube that passes through the bearing housing, and a rotating air supply pipe inserted inside the first bearing and sleeved outside the second bearing. In this invention, the high-temperature steam leaking from the tail of the soot blowing gun tube is transported to the return air plate through the rotating air supply pipe.

[0013] Furthermore, the sealing component also includes a first partition plate installed at both ends inside the return gas plate, a first groove provided at one end of the two first partition plates that are far apart from each other, and a first rubber cap installed on one side surface of the first partition plates that are far apart from each other. The groove of the first groove is provided with a plurality of first vent holes. In this invention, the high-temperature steam in the rotating gas pipe pushes open the first rubber cap, so that the steam passes through the first vent hole and enters the return gas plate. Similarly, the excess high-temperature steam in the bellows-type heat preservation cover pushes open the first rubber cap, so that the steam passes through the first vent hole and enters the return gas plate.

[0014] Furthermore, the heat preservation component also includes a return air component connected to the air outlet end of the sealing component. The return air component includes a vent valve installed on the outer surface of the rotating air supply pipe. In this invention, when there is too much high-temperature steam in the return air plate, the high-temperature steam pushes open the vent valve and flows out.

[0015] Furthermore, the air inlet end of the vent valve is connected to a bend pipe, which extends through the first partition plate and into the return air plate. In this invention, the axis of the bend pipe near the first partition plate coincides with the first partition plate, so that when the rotating air supply pipe drives the vent valve to rotate, the high-temperature steam can smoothly enter the vent valve through the bend pipe by rotating on the first partition plate.

[0016] Furthermore, the return gas component also includes a return gas pipe connected to the outlet end of the vent valve. The end of the return gas pipe away from the vent valve is connected to the rotating gas delivery pipe. In this invention, the high-temperature steam that opens the vent valve passes through the return gas pipe and enters the rotating gas delivery pipe, where it counteracts the steam leaking from the rotating gas delivery pipe to form an air curtain, thereby achieving a sealing effect on the rotating gas delivery pipe.

[0017] Furthermore, a first one-way valve is connected to the end of the rotating gas supply pipe away from the vent valve. The outlet end of the first one-way valve is connected to the rotating gas supply pipe, and the inlet end is connected to the return gas pipe. In this invention, the return gas pipe restricts the flow direction of the high-temperature steam flowing out through the first one-way valve.

[0018] Furthermore, a second air supply pipe is connected to the top of the air intake plate, and a second one-way valve is connected to the end of the second air supply pipe away from the air intake plate. The second one-way valve is installed at the top of the inner air supply pipe. In this invention, a portion of the high-temperature steam transported in the inner air supply pipe enters the second air supply pipe through the second one-way valve, and the steam enters the air intake plate through the second air supply pipe.

[0019] Furthermore, a second partition plate is installed inside the air intake plate. The second partition plate has a second groove on the side surface away from the bellows-type heat insulation cover. A second vent hole is provided in the groove of the second groove. A second rubber cap is connected to the end of the second groove away from the bellows-type heat insulation cover. In this invention, the high-temperature steam entering the air intake plate pushes open the second rubber cap, so that the steam enters the bellows-type heat insulation cover through the second vent hole, thereby replenishing the bellows-type heat insulation cover with high-temperature steam for heat preservation.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] Firstly, in this invention, the blowing gun barrel causes the bellows-type insulation cover to extend, so that the bellows-type insulation cover gradually covers the exposed gas supply pipe. During this process, some of the high-temperature steam transported in the gas supply pipe enters the second gas delivery pipe through the second one-way valve, and the steam enters the air inlet plate through the second air delivery pipe. The high-temperature steam entering the air inlet plate pushes open the second rubber cover, so that the steam enters the bellows-type insulation cover through the second vent hole, replenishing the bellows-type insulation cover with high-temperature steam for insulation.

[0022] Secondly, during the rotation and insertion of the sootblowing gun tube into the boiler, the rotating gas supply pipe transports the high-temperature steam leaking from the tail of the sootblowing gun tube to the return gas plate. At the same time, the excess high-temperature steam in the bellows-type heat insulation cover, the high-temperature steam that opens the vent valve, passes through the return gas pipe and enters the rotating gas supply pipe, where it counteracts the steam leaking from the rotating gas supply pipe to form an air curtain, thereby achieving a sealing effect on the rotating gas supply pipe.

[0023] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the wall box, walking mechanism, and soot blowing mechanism of the present invention;

[0026] Figure 3 This is a schematic diagram of the walking mechanism and the soot blowing mechanism of the present invention;

[0027] Figure 4 for Figure 3 Enlarged view of the structure of area A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the sealing component and the return air component of the present invention;

[0029] Figure 6 This is a top view of the present invention;

[0030] Figure 7 This is an exploded view of the thermal insulation component of the present invention;

[0031] Figure 8 This is a schematic diagram of the intake disc of the present invention.

[0032] In the diagram: 10. Wall box; 20. Air supply pipe; 30. Traveling mechanism; 31. Traveling box; 32. Bearing box; 33. Rotating assembly; 331. Motor; 332. First sprocket; 333. Second sprocket; 40. Soot blowing mechanism; 41. Soot blowing gun barrel; 42. Insulation assembly; 421. Bellows-style insulation cover; 422. Air inlet plate; 4221. Second air supply pipe; 4222. Second one-way valve; 4223. Second vent; 4224. Second rubber cap; 4225. 4226. Second partition plate; 423. Second groove; 423. Sealing component; 4231. First bearing; 4232. Second bearing; 4233. Rotating air supply pipe; 4234. Air return plate; 4235. First groove; 4236. First vent hole; 4237. First partition plate; 4238. First rubber cap; 424. Air return component; 4241. Air release valve; 4242. Bend; 4243. Air return pipe; 4244. First one-way valve; 50. Inner air supply pipe. Detailed Implementation

[0033] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0034] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0036] For an example, please refer to the appendix. Figure 1-8 A high-efficiency desulfurization soot blower for a thermal power plant boiler includes a wall box 10, one end of which is connected to an air supply pipe 20, the output end of which is connected to an inner air supply pipe 50, a traveling mechanism 30 is sleeved on the outside of the inner air supply pipe 50, and the output end of the traveling mechanism 30 is connected to a soot blowing mechanism 40.

[0037] The walking mechanism 30 includes a walking box 31 slidably connected to the wall box 10, a bearing box 32 installed at the bottom of the walking box 31, and a rotating assembly 33 disposed on one side of the walking box 31.

[0038] The soot blowing mechanism 40 includes a soot blowing gun tube 41 that is rotatably connected to the bottom end of the bearing housing 32 and sleeved on the outside of the air supply inner pipe 50, and a heat preservation component 42 that is sleeved on the outside of the air supply inner pipe 50 and connected to the soot blowing gun tube 41.

[0039] The heat insulation component 42 includes an accordion-style heat insulation cover 421 sleeved on the outside of the soot blowing gun tube 41, an air inlet plate 422 connected to one end of the accordion-style heat insulation cover 421, and a sealing component 423 connected to the other end of the accordion-style heat insulation cover 421. The sealing component 423 is connected to the soot blowing gun tube 41.

[0040] For details, please refer to the appendix. Figure 2 and 3 The rotating assembly 33 includes a motor 331 mounted on one side surface of the traveling box 31, a first sprocket 332 connected to the outer surface of the output shaft of the motor 331, and a second sprocket 333 sleeved on the outer surface of the soot blowing gun barrel 41. The first sprocket 332 and the second sprocket 333 are connected by a chain.

[0041] It should be noted that in this embodiment, when the motor 331 drives the first sprocket 332 connected to its output shaft to rotate, since the first sprocket 332 and the second sprocket 333 on the outer surface of the soot blowing gun tube 41 are connected by a chain, when the chain drives the second sprocket 333 to run, the second sprocket 333 drives the soot blowing gun tube 41 to rotate, so that the spraying range of the nozzle on the soot blowing gun tube 41 is expanded when the soot blowing gun tube 41 is inserted into the boiler.

[0042] For details, please refer to the appendix. Figure 3 and 7 The sealing component 423 includes a return air plate 4234 installed at one end of the bellows-type heat insulation cover 421, a first bearing 4231 rotatably connected to the end of the return air plate 4234 away from the bellows-type heat insulation cover 421, a second bearing 4232 connected to one end of the soot blowing gun tube 41 that passes through the bearing housing 32, and a rotating air supply pipe 4233 inserted inside the first bearing 4231 and sleeved on the outside of the second bearing 4232 at the other end;

[0043] The sealing component 423 further includes a first partition plate 4237 installed at both ends inside the return air plate 4234, a first groove 4235 provided at one end of the two first partition plates 4237 that are far apart from each other, and a first rubber cap 4238 installed on one side surface of the first partition plates 4237 that are far apart from each other. The groove of the first groove 4235 is provided with a plurality of first vent holes 4236.

[0044] It should be noted that, in this embodiment, when the soot blowing gun tube 41 rotates, the soot blowing gun tube 41 and the rotating air supply tube 4233 are connected by a first bearing 4231. The rotation of the first bearing 4231 prevents damage to the rotating air supply tube 4233 caused by the soot blowing gun tube 41 rotating. Similarly, the rotating air supply tube 4233 and the return air plate 4234 are connected by a second bearing 4232. This prevents the return air plate 4234 from being damaged by rotating with the rotating air supply tube 4233. The rotating air supply tube 4233 also delivers the high-temperature steam leaking from the tail of the soot blowing gun tube 41 to the return air plate 4234.

[0045] Furthermore, the high-temperature steam in the rotating gas pipe 4233 pushes open the first rubber cover 4238, allowing the steam to pass through the first vent hole 4236 and enter the return gas plate 4234. Similarly, the excess high-temperature steam in the accordion-style heat preservation cover 421 pushes open the first rubber cover 4238, allowing the steam to pass through the first vent hole 4236 and enter the return gas plate 4234.

[0046] For details, please refer to the appendix. Figure 5 and 7 The heat preservation component 42 further includes a return air component 424 connected to the air outlet end of the sealing component 423, and the return air component 424 includes a vent valve 4241 installed on the outer surface of the rotating air supply pipe 4233.

[0047] The air inlet end of the vent valve 4241 is connected to a bend 4242, which extends through the first partition plate 4237 and into the interior of the return plate 4234.

[0048] The return air component 424 further includes a return air pipe 4243 connected to the air outlet end of the vent valve 4241, and one end of the return air pipe 4243 away from the vent valve 4241 is connected to the rotating air supply pipe 4233.

[0049] The end of the rotating gas supply pipe 4233 away from the vent valve 4241 is connected to a first one-way valve 4244. The outlet end of the first one-way valve 4244 is connected to the rotating gas supply pipe 4233, and the inlet end is connected to the return gas pipe 4243.

[0050] It should be noted that in this embodiment, when there is too much high-temperature steam in the return air plate 4234, the high-temperature steam will open the vent valve 4241 and flow out.

[0051] Furthermore, the axis of one end of the bend 4242 near the first partition plate 4237 coincides with the first partition plate 4237, so that when the rotating gas pipe 4233 drives the vent valve 4241 to rotate, the high-temperature steam can smoothly enter the vent valve 4241 through the rotation of the bend 4242 on the first partition plate 4237.

[0052] Furthermore, the high-temperature steam that opens the vent valve 4241 passes through the return pipe 4243 and enters the rotating gas delivery pipe 4233, where it counteracts the steam leaking from the rotating gas delivery pipe 4233, forming an air curtain and achieving a sealing effect on the rotating gas delivery pipe 4233.

[0053] Furthermore, the return gas pipe 4243 restricts the flow direction of the high-temperature steam flowing out of it through the first one-way valve 4244.

[0054] For details, please refer to the appendix. Figure 3 and8 The top end of the air intake plate 422 is connected to a second air supply pipe 4221, and the end of the second air supply pipe 4221 away from the air intake plate 422 is connected to a second one-way valve 4222. The second one-way valve 4222 is installed at the top end of the air supply inner pipe 50.

[0055] The air intake plate 422 is equipped with a second partition plate 4225. The second partition plate 4225 has a second groove 4226 on the side surface away from the bellows-type heat insulation cover 421. The groove of the second groove 4226 has a second vent hole 4223. The end of the second groove 4226 away from the bellows-type heat insulation cover 421 is connected to a second rubber cap 4224.

[0056] It should be noted that, in this embodiment, a portion of the high-temperature steam transported in the inner gas pipe 50 enters the second gas delivery pipe 4221 through the second one-way valve 4222, and the steam enters the air intake plate 422 through the second gas delivery pipe 4221.

[0057] Furthermore, the high-temperature steam entering the air intake plate 422 pushes open the second rubber cover 4224, allowing the steam to enter the bellows-type heat preservation cover 421 through the second vent 4223, replenishing the bellows-type heat preservation cover 421 with high-temperature steam for heat preservation.

[0058] The specific operation method of this invention is as follows:

[0059] The movement of the traveling box 31 inside the wall box 10 drives the soot blowing gun tube 41 to gradually extend into the boiler. When the motor 331 drives the first sprocket 332 connected to its output shaft to rotate, the first sprocket 332 and the second sprocket 333 on the outer surface of the soot blowing gun tube 41 are connected by a chain. When the chain drives the second sprocket 333 to rotate, the second sprocket 333 drives the soot blowing gun tube 41 to rotate. Gas is supplied to the gas supply pipe 20 and the gas supply pipe 50 is supplied to the soot blowing gun tube 41, so that high-pressure steam can be used to blow soot into the boiler through the soot blowing gun tube 41, which gradually extends into the boiler and rotates continuously.

[0060] During the process of the soot blowing gun 41 rotating and extending into the boiler, the soot blowing gun 41 drives the bellows-type insulation cover 421 to extend, so that the bellows-type insulation cover 421 gradually covers the exposed gas transmission inner pipe 50. During this process, part of the high-temperature steam transported in the gas transmission inner pipe 50 enters the second gas supply pipe 4221 through the second one-way valve 4222, and the steam enters the air inlet plate 422 through the second air supply pipe 4221. The high-temperature steam entering the air inlet plate 422 pushes open the second rubber cover 4224, so that the steam enters the bellows-type insulation cover 421 through the second vent 4223, and replenishes the bellows-type insulation cover 421 with high-temperature steam for insulation.

[0061] During the rotation and insertion of the sootblowing nozzle 41 into the boiler, the rotating gas supply pipe 4233 delivers the high-temperature steam leaking from the tail of the sootblowing nozzle 41 to the return gas plate 4234. At the same time, the excess high-temperature steam in the bellows-type insulation cover 421, which opens the vent valve 4241, enters the rotating gas supply pipe 4233 through the return gas pipe 4243, and counteracts the steam leaking from the rotating gas supply pipe 4233 to form an air curtain, thereby achieving a sealing effect on the rotating gas supply pipe 4233. A pressure relief valve is installed on the rotating gas supply pipe 4233 so that the excess steam in the rotating gas supply pipe 4233 can be discharged through the pressure relief valve to the hose and flow back through the hose to the inner gas supply pipe 50.

[0062] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A high-efficiency desulfurization soot blower for a thermal power plant boiler, comprising a wall box (10), characterized in that, One end of the wall box (10) is connected to an air supply pipe (20), the output end of the air supply pipe (20) is connected to an inner air supply pipe (50), a walking mechanism (30) is sleeved on the outside of the inner air supply pipe (50), and a soot blowing mechanism (40) is connected to the output end of the walking mechanism (30). The walking mechanism (30) includes a walking box (31) slidably connected to the wall box (10), a bearing box (32) installed at the bottom of the walking box (31), and a rotating assembly (33) located on one side of the walking box (31). The soot blowing mechanism (40) includes a soot blowing gun tube (41) rotatably connected to the bottom end of the bearing housing (32) and sleeved outside the air supply inner pipe (50), and a heat insulation component (42) sleeved outside the air supply inner pipe (50) and connected to the soot blowing gun tube (41). The heat insulation component (42) includes an accordion-style heat insulation cover (421) sleeved on the outside of the soot blowing gun tube (41), an air inlet plate (422) connected to one end of the accordion-style heat insulation cover (421), and a sealing component (423) connected to the other end of the accordion-style heat insulation cover (421). The sealing component (423) is connected to the soot blowing gun tube (41). The sealing component (423) includes a return air plate (4234) installed at one end of the bellows-type heat insulation cover (421), a first bearing (4231) rotatably connected to the end of the return air plate (4234) away from the bellows-type heat insulation cover (421), a second bearing (4232) connected to one end of the soot blowing gun tube (41) that passes through the bearing housing (32), and a rotating air supply pipe (4233) inserted inside the first bearing (4231) and sleeved on the outside of the second bearing (4232) at the other end. The sealing component (423) further includes a first partition plate (4237) installed at both ends inside the return air plate (4234), a first groove (4235) provided at one end of the two first partition plates (4237) that are far apart from each other, and a first rubber cap (4238) installed on one side surface of the first partition plates (4237) that are far apart from each other. The groove of the first groove (4235) is provided with a plurality of first vent holes (4236). The heat insulation component (42) also includes a return air component (424) connected to the air outlet end of the sealing component (423), and the return air component (424) includes a vent valve (4241) installed on the outer surface of the rotating air supply pipe (4233). The return air component (424) further includes a return air pipe (4243) connected to the outlet end of the vent valve (4241), and the end of the return air pipe (4243) away from the vent valve (4241) is connected to the rotating air supply pipe (4233). The end of the rotating gas supply pipe (4233) away from the vent valve (4241) is connected to a first one-way valve (4244). The outlet end of the first one-way valve (4244) is connected to the rotating gas supply pipe (4233), and the inlet end is connected to the return gas pipe (4243). The air intake plate (422) is equipped with a second partition plate (4225). The second partition plate (4225) has a second groove (4226) on the side surface away from the bellows-type heat insulation cover (421). The groove (4226) has a second vent hole (4223) inside. The end of the second groove (4226) away from the bellows-type heat insulation cover (421) is connected to a second rubber cap (4224).

2. The high-efficiency desulfurization soot blower for a thermal power plant boiler according to claim 1, characterized in that, The rotating assembly (33) includes a motor (331) mounted on one side surface of the traveling box (31), a first sprocket (332) connected to the outer surface of the output shaft of the motor (331), and a second sprocket (333) sleeved on the outer surface of the soot blowing gun tube (41). The first sprocket (332) and the second sprocket (333) are connected by a chain.

3. The high-efficiency desulfurization soot blower for a thermal power plant boiler according to claim 1, characterized in that, The air inlet of the vent valve (4241) is connected to a bend (4242), which extends through the first partition plate (4237) into the interior of the return plate (4234).

4. The high-efficiency desulfurization soot blower for a thermal power plant boiler according to claim 1, characterized in that, The top end of the air intake plate (422) is connected to a second air supply pipe (4221), and the end of the second air supply pipe (4221) away from the air intake plate (422) is connected to a second one-way valve (4222). The second one-way valve (4222) is installed at the top end of the air supply inner pipe (50).

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