An automatic soot blowing control system for boilers in thermal power plants

Abstract

The invention relates to the technical field of sootblowing of boilers in power plants, and in particular to an automatic sootblowing control system for boilers in thermal power plants. In order to solve the problem that the sootblowing effect of water-cooling tubes and water-cooling walls is poor due to the adhesion of dust in the prior art, which reduces the sootblowing effect, the invention starts a motor to allow a slider to reciprocate and knock against the outer wall of the boiler, so as to shake off the dust on the surface of the water-cooling wall. The dust on the surface of the water-cooling tube will be preliminarily cleaned due to the blowing of the sootblowing tube, and then the reciprocating threaded rod is started to rotate and move a connecting component and a surface cleaning component. The edge cleaning component will reciprocate the right edge cleaning plate and the left edge cleaning plate due to the rolling of the roller, so as to clean the dust at the bend of the water-cooling tube. When gas is ejected from the sootblowing tube, the connecting component sleeved on the outer surface of the sootblowing tube will allow the gas to drive an impeller scraper to clean the surface and the vertical surface of the water-cooling wall at the same time, thereby improving the dust cleaning effect inside the boiler body.

Description

Technical Field

[0001] The invention relates to the technical field of soot blowing of boilers in power plants, and in particular to an automatic soot blowing control system for boilers in thermal power plants. Background Art

[0002] Boiler sootblowing in a power plant refers to the process of spraying steam, compressed air or other media onto the water-cooled walls, superheaters, reheaters and economizers in the boiler through sootblowers to remove the ash accumulated on the heating surfaces, thereby improving the heat transfer efficiency of the heating surfaces, maintaining the heat exchange performance and steam parameters of the boiler, and ensuring the safe, efficient and stable operation of the boiler.

[0003] In the Chinese patent application number CN202322635780.4, a boiler soot blower is disclosed, comprising: an air pipe, the air pipe is used to connect a compressed gas source; an outer sleeve, the outer sleeve is sealingly sleeved on the air pipe, and the outer sleeve can move along the axial direction of the air pipe, the outer sleeve is provided with a first air channel to communicate with the air pipe; a soot blowing nozzle, the soot blowing nozzle is rotatably mounted on the outer sleeve through a mounting shaft, and the soot blowing nozzle is provided with a second air channel to communicate with the first air channel, the axis of the mounting shaft is perpendicular to the axis of the outer sleeve; and a driving device, the driving device is transmission-connected with the soot blowing nozzle to drive the soot blowing nozzle to rotate around a rotation axis, the rotation axis is parallel to the axis of the mounting shaft, and the soot blowing nozzle is rotated in the direction of movement of the outer sleeve, so that the soot blowing nozzle is in a first working state, so that the soot accumulated on the superheater inside the boiler can be cleaned, thereby improving the cleaning efficiency of the boiler soot blower.

[0004] In the operation of the above patent, when the soot blowing operation is performed on the boiler, due to the long-term operation of the boiler, the water-cooled wall and water-cooled pipe areas are filled with dust. Since the dust stays in one place for a long time, part of the dust is adsorbed and adheres to the surface of the equipment, resulting in poor soot blowing effect, which reduces the soot blowing effect.

[0005] Therefore, we proposed an automatic sootblowing control system for boilers in thermal power plants. Summary of the invention

[0006] The purpose of the present invention is to provide an automatic soot blowing control system for a thermal power plant boiler, which solves the problem in the background technology that the soot blowing effect of water cooling pipes and water cooling walls is poor due to the adhesion of dust, resulting in reduced soot blowing effect.

[0007] To achieve the above object, the present invention provides the following technical solution: an automatic sootblowing control system for a boiler in a thermal power plant, wherein a first support plate and a second support plate are fixedly installed on one side of a boiler body, a water-cooled wall and a water-cooled pipe are fixedly installed on the inner wall of the boiler body, a short-rod sootblower is fixedly installed on the upper surface of the second support plate, a short sootblower is provided with a short sootblowing pipe inside the short-rod sootblower, a knocking assembly for knocking the water-cooled wall is fixedly installed on one end of the short-rod sootblower, and the knocking assembly is sleeved on the outer surface of the short sootblowing pipe;

[0008] A long-rod sootblower is fixedly installed on the upper surface of the first support plate, a long sootblower is arranged inside the long-rod sootblower, a reciprocating threaded rod is arranged on the inner wall of the boiler body, a connecting component for conveying gas is sleeved on the outer surface of the long sootblower, surface cleaning components for cleaning the upper and lower surfaces of the water-cooling pipe are fixedly installed at both ends of the connecting component, an edge cleaning component for cleaning both sides of the bending part of the water-cooling pipe is movably arranged inside the surface cleaning component, and a scraping component for scraping off both sides of the vertical part of the water-cooling pipe is fixedly installed inside the surface cleaning component;

[0009] The knocking assembly includes an outer shell fixedly installed on one side of the short rod soot blower, arc grooves and slide grooves are opened on the outer surface of the outer shell, and multiple groups of slide grooves are provided. A motor is fixedly installed on one side of the knocking assembly, a rotating shaft is provided at the output end of the motor, a small gear is fixedly installed at one end of the rotating shaft, a sleeve is provided inside the outer shell, a large gear is sleeved on the outer surface of the sleeve, the large gear is meshed with the small gear, an inclined ring and a slider are fixedly installed on the outer surface of the sleeve, the slider is slidably connected to the sleeve, a groove is opened at the bottom of the slider, the groove is slidably connected to the inclined ring, a knocking plate is fixedly installed on the top of the inclined ring, and the knocking plate is slidably connected to the slide groove.

[0010] Furthermore, the connecting component includes a connecting plate sleeved on the outer surface of the long sootblowing pipe, a pipe opening and an air cavity opened inside the connecting plate, the pipe opening is adapted to the long sootblowing pipe, and guide plates A are fixedly installed on the top and bottom of the air cavity, an air outlet is penetrated through the upper surface of the connecting component, the air outlet penetrates the guide plate A, circular grooves are opened on both sides of the connecting component, a plate groove is opened on the top of the circular groove, and a triangular groove is opened on the inner wall of the plate groove.

[0011] Furthermore, the surface cleaning component includes a top plate fixedly installed at both ends of the connecting component, a rod hole opened on one side of the top plate and an L-groove opened on the lower surface of the top plate, the L-groove is connected to the air outlet, a left wide groove and a right wide groove are opened on the lower surface of the top plate, two groups of left wide grooves and right wide grooves are arranged, an edge cleaning component is movably arranged inside the left wide groove, an impeller is rotatably connected to the inner wall at the other end of the L-groove, and the impeller and the water cooling pipe are on the same vertical line, and a horizontal groove is opened on the inner wall of the right wide groove.

[0012] Furthermore, a sliding rod is fixedly installed inside the rod hole, and the sliding rod is slidably connected to the reciprocating thread provided on the surface of the reciprocating threaded rod. A driving motor is fixedly installed on the outer wall of the boiler body, and the output end of the driving motor is connected to one end of the reciprocating threaded rod.

[0013] Furthermore, a blade is fixedly installed inside the impeller, a connecting rod is fixedly installed at one end of the blade, a guide plate B is fixedly installed on the upper surface of the connecting rod, a surface cleaning plate is fixedly installed on the lower surface of the connecting rod, and a carbon fiber brush A is arranged on the lower surface of the surface cleaning plate.

[0014] Furthermore, the edge cleaning assembly includes a right edge cleaning plate movably arranged inside the left wide groove, an inner groove opened on one side of the right edge cleaning plate, teeth fixedly installed on the top and bottom of the inner groove, a round rod movably arranged inside the surface cleaning assembly, a roller fixedly installed on the outer surface of the round rod, the outer surface of the roller fits with the surface of the water cooling pipe, a half gear sleeved on the outer surface of the round rod, the half gear meshes with the teeth, a carbon fiber brush B is fixedly installed on one side of the right edge cleaning plate, a short plate is fixedly installed on one side of the right edge cleaning plate, a left edge cleaning plate is fixedly installed on one side of the short plate, a carbon fiber brush B is also fixedly installed on one side of the left edge cleaning plate, the edge cleaning assembly is slidably connected to the right wide groove, and the left edge cleaning plate is slidably connected to the horizontal groove.

[0015] Furthermore, a horizontal plate is fixedly installed on the other side of the right edge cleaning plate, and the horizontal plate is slidably connected to the horizontal groove.

[0016] Furthermore, the scraper assembly includes a telescopic rod fixedly installed inside the surface cleaning assembly, a hole groove opened inside the telescopic rod, an air intake pipe fixedly installed on the outer surface of the telescopic rod, and a scraper fixedly installed at one end of the telescopic rod, a compression spring fixedly installed on the upper surface of the scraper, the other end of the compression spring fixedly installed on the top of the telescopic rod, a long plate is slidably arranged inside the plate groove, and one side of the scraper is in contact with the vertical part of the water cooling pipe.

[0017] Furthermore, a connecting hole and a rectangular groove are provided on one side of the long plate, an L-tube is provided on the other side of the long plate, one end of the connecting hole is connected with the air outlet, the connecting hole is adapted to the air inlet pipe, a cross bar is fixedly installed on the inner wall of the rectangular groove, a flip plate A is sleeved on the outer surface of the cross bar, a cross bar is also sleeved on the other end of the flip plate A, the flip plate A is located inside the triangular groove, a surface flip plate B is movably sleeved on the outer surface of the other end of the long plate, a cross bar is movably provided inside the flip plate B, and the flip plate B is located inside the circular groove.

[0018] Furthermore, there are multiple groups of water-cooling tubes and water-cooled walls, the connecting components are located directly between each group of water-cooling tubes, the surface cleaning components are located on the upper and lower surfaces of the water-cooling tubes, the short sootblowing pipe inside the short-rod sootblower is located between each group of water-cooled walls, and lifting valves are fixedly installed on the upper surfaces of the long-rod sootblower and the short-rod sootblower. An air supply pipe is arranged inside the lifting valve, and the air supply pipe is respectively connected to the sootblowing pipe and the short sootblowing pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention proposes an automatic sootblowing control system for a boiler in a thermal power plant. When sootblowing is required for the boiler, the driving motor is started to rotate the reciprocating threaded rod, thereby driving the surface cleaning component and the connecting component to move. As the surface cleaning component moves, the roller rolls on the surface of the water-cooling pipe, causing the half gear to rotate continuously, driving the right edge cleaning plate to reciprocate. When the right edge cleaning plate reciprocates, the carbon fiber brush B on one side of the right edge cleaning plate and the left edge cleaning plate will clean the bending part of the water-cooling pipe. As the driving motor is started, the gas will enter the lifting valve from the sootblowing mother pipe, and then enter the inside of the long sootblowing pipe, and finally be discharged from the air holes on the surface of the long sootblowing pipe. At this time, as the long sootblowing pipe rotates, the long sootblowing pipe will give priority to blowing most of the dust into the lifting valve. Cleaning is carried out. As the gas enters the air cavity through the long sootblowing pipe, the gas will enter the L-groove through the air outlet, thereby driving the impeller to rotate and clean the surface of the water-cooling pipe, and a part of the gas inside the air outlet will enter the hole groove inside the telescopic rod through the L-tube, allowing the telescopic rod to extend and drive the scraper down to scrape off the dust on the vertical surface of the water-cooling pipe. Finally, when the load of the boiler is less than 50%, it is only necessary to adjust the air intake speed of the lifting valve to increase the speed at which the gas enters the sootblowing pipe and the short rod sootblower. The knocking of the knocking component can further speed up the dust cleaning speed. At this point, the cleaning effect of the dust inside the boiler body is improved by cleaning the knocking component and the connecting component, the surface cleaning component, the edge cleaning component and the scraping component. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of the automatic soot blowing control system for a thermal power plant boiler according to the present invention;

[0022] Figure 2 It is a schematic diagram of the overall partial cross-sectional structure of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the first support plate and the second support plate of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0024] Figure 4 It is a cross-sectional structural schematic diagram of the connection components and the surface cleaning components of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0025] Figure 5 It is a schematic diagram of a short-rod sootblower of an automatic sootblowing control system for a thermal power plant boiler of the present invention;

[0026] Figure 6 It is a schematic diagram of the exploded cross-sectional structure of the knocking assembly of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0027] Figure 7 This is a schematic cross-sectional view of the connection plate of the automatic soot blowing control system for a thermal power plant boiler according to the present invention;

[0028] Figure 8 It is a schematic diagram of the exploded cross-sectional structure of the surface cleaning component of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of the edge cleaning assembly and the impeller of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0030] Fig.10 It is a partial cross-sectional structural schematic diagram of the telescopic rod of the automatic soot blowing control system for a thermal power plant boiler of the present invention;

[0031] Fig.11 It is a partial cross-sectional structural schematic diagram of a long plate of an automatic soot blowing control system for a thermal power plant boiler according to the present invention.

[0032] In the figure: 1, boiler body; 11, water-cooled wall; 12, water-cooled pipe; 2, first support plate; 21, long rod soot blower; 22, long soot blowing pipe; 23, connecting assembly; 231, connecting plate; 232, pipe mouth; 233, air cavity; 234, guide plate A; 235, air outlet; 236, circular groove; 237, plate groove; 238, triangular groove; 24, surface cleaning assembly; 241, top plate; 24 2. Rod hole; 243. L groove; 244. Left wide groove; 245. Right wide groove; 246. Impeller; 2461. Blade; 2462. Connecting rod; 2463. Guide plate B; 2464. Surface cleaning plate; 2465. Carbon fiber brush A; 247. Horizontal groove; 25. Edge cleaning assembly; 251. Right edge cleaning plate; 252. Inner groove; 253. Tooth; 254. Round rod; 25 5. Roller; 256. Half gear; 257. Horizontal plate; 258. Carbon fiber brush B; 2581. Short plate; 259. Left edge cleaning plate; 26. Scraping assembly; 261. Telescopic rod; 262. Inlet pipe; 263. Scraper; 264. Long plate; 2641. Connecting hole; 2642. L tube; 2643. Rectangular groove; 2644. Crossbar; 2645. Flip plate A; 2646 , flip plate B; 27, reciprocating threaded rod; 3, second support plate; 31, short rod soot blower; 32, knocking assembly; 321, shell; 3211, arc groove; 3212, slide groove; 322, motor; 3221, rotating shaft; 3222, small gear; 3223, sleeve; 3224, large gear; 3225, tilting ring; 3226, slider; 3227, knocking plate; 3228, groove. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In order to solve the technical problem of how to improve the soot blowing effect, such as Figure 1-Figure 11 As shown, the following preferred technical solutions are provided:

[0035] An automatic sootblowing control system for a boiler in a thermal power plant, wherein a first support plate 2 and a second support plate 3 are fixedly mounted on one side of a boiler body 1, a water-cooled wall 11 and a water-cooled pipe 12 are fixedly mounted on the inner wall of the boiler body 1, a short-rod sootblower 31 is fixedly mounted on the upper surface of the second support plate 3, a short sootblower 31 is provided with a short sootblowing pipe inside, a knocking assembly 32 for knocking the water-cooled wall 11 is fixedly mounted on one end of the short-rod sootblower 31, and the knocking assembly 32 is sleeved on the outer surface of the short sootblowing pipe;

[0036] A long-rod sootblower 21 is fixedly installed on the upper surface of the first support plate 2, a long sootblower 22 is arranged inside the long-rod sootblower 21, a reciprocating threaded rod 27 is arranged on the inner wall of the boiler body 1, a connecting component 23 for conveying gas is sleeved on the outer surface of the long sootblower 22, surface cleaning components 24 for cleaning the upper and lower surfaces of the water-cooling pipe 12 are fixedly installed at both ends of the connecting component 23, an edge cleaning component 25 for cleaning both sides of the bending part of the water-cooling pipe 12 is movably arranged inside the surface cleaning component 24, and a scraping component 26 for scraping off both sides of the vertical part of the water-cooling pipe 12 is fixedly installed inside the surface cleaning component 24;

[0037] The knocking assembly 32 includes a housing 321 fixedly mounted on one side of the short rod soot blower 31, an arc groove 3211 and a slide groove 3212 are provided on the outer surface of the housing 321, and the slide groove 3212 is provided with multiple groups. A motor 322 is fixedly mounted on one side of the knocking assembly 32, a rotating shaft 3221 is provided at the output end of the motor 322, a small gear 3222 is fixedly mounted at one end of the rotating shaft 3221, a sleeve shell 3223 is provided inside the housing 321, and a large gear 3224 is sleeved on the outer surface of the sleeve shell 3223, and the large gear 3224 is sleeved on the outer surface of the large gear 3224. 224 meshes with the pinion 3222, the outer surface of the housing 3223 is fixedly mounted with a tilting ring 3225 and a slider 3226, the slider 3226 is slidably connected to the housing 3223, a groove 3228 is provided at the bottom of the slider 3226, the groove 3228 is slidably connected to the tilting ring 3225, a knocking plate 3227 is fixedly mounted on the top of the tilting ring 3225, the knocking plate 3227 is slidably linked to the slide groove 3212, and the pinion 3222 is rotated with the housing 3223 by starting the motor 322 , and the casing 3223 will rotate with the tilting ring 3225. Since the slider 3226 is slidably connected with the tilting ring 3225 and the casing 3223, and the tilting ring 3225 is in an inclined state, when the tilting ring 3225 starts to rotate, the slider 3226 will reciprocate along the tilting ring 3225, thereby knocking the outer wall of the boiler body 1, thereby vibrating the outer surface of the water-cooled wall 11, and the soot blowing of the short rod soot blower 31 can further clean the dust on the water-cooled pipe 12, and the water-cooled pipe 12 The long soot blowing pipe 22 will be used for soot blowing first, while the upper and lower surfaces of the water-cooling tube 12 will be cleaned by the surface cleaning component 24, the dust at the bend of the water-cooling tube 12 will be cleaned by the edge cleaning component 25, and finally the dust at the vertical part of the water-cooling tube 12 will be scraped and cleaned by the soot scraping component 26. At this point, the dust cleaning effect inside the boiler body 1 is improved by cleaning the knocking component 32 and the connecting component 23, the surface cleaning component 24, the edge cleaning component 25 and the soot scraping component 26.

[0038] The connecting component 23 includes a connecting plate 231 sleeved on the outer surface of the long soot blowing pipe 22, a pipe opening 232 and an air cavity 233 provided inside the connecting plate 231, the pipe opening 232 is adapted to the long soot blowing pipe 22, and a guide plate A234 is fixedly installed on the top and bottom of the air cavity 233, an air outlet 235 is penetrated through the upper surface of the connecting component 23, and the air outlet 235 penetrates the guide plate A234, circular grooves 236 are provided on both sides of the connecting component 23, and a plate groove 237 is provided on the top of the circular groove 236. A triangular groove 238 is provided on the inner wall of the plate groove 237, and the connecting component 23 can be moved on the outer surface of the long soot blowing pipe 22 through the pipe mouth 232, and the air blown out of the long soot blowing pipe 22 can enter the air outlet 235 through the air cavity 233, and finally be ejected from the surface cleaning component 24. When the long soot blowing pipe 22 ejects air, the guide plate A234 can further accelerate the speed of the airflow entering the air outlet 235, and finally blow soot onto the surface of the water-cooling pipe 12 through the surface cleaning component 24.

[0039] The surface cleaning component 24 includes a top plate 241 fixedly installed at both ends of the connecting component 23, a rod hole 242 opened on one side of the top plate 241 and an L-groove 243 opened on the lower surface of the top plate 241, the L-groove 243 is connected to the air outlet 235, and a left wide groove 244 and a right wide groove 245 are opened on the lower surface of the top plate 241. The left wide groove 244 and the right wide groove 245 are provided in two groups, and an edge cleaning component 25 is movably arranged inside the left wide groove 244. The inner wall of the other end of the L-groove 243 is rotatably connected to an impeller 246, and the impeller 246 and the water-cooling pipe 12 are on the same vertical line. The inner wall of the right wide groove 245 is provided with a horizontal groove 247. Through the L-groove 243, the gas inside the air outlet 235 can drive the impeller 246 while also blowing dust off the surface of the water-cooling pipe 12.

[0040] A sliding rod is fixedly installed inside the rod hole 242, and the sliding rod is slidably connected to the reciprocating threaded rod 27 on the surface. A driving motor is fixedly installed on the outer wall of the boiler body 1, and the output end of the driving motor is connected to one end of the reciprocating threaded rod 27. The reciprocating threaded rod 27 can be rotated by the driving motor, and the sliding rod inside the rod hole 242 and the reciprocating thread on the surface of the reciprocating threaded rod 27 can drive the surface cleaning assembly 24 to move when the reciprocating threaded rod 27 rotates, thereby cleaning the water-cooling pipes 12 on a line.

[0041] A blade 2461 is fixedly installed inside the impeller 246, a connecting rod 2462 is fixedly installed at one end of the blade 2461, a guide plate B2463 is fixedly installed on the upper surface of the connecting rod 2462, a surface cleaning plate 2464 is fixedly installed on the lower surface of the connecting rod 2462, and a carbon fiber brush A2465 is provided on the lower surface of the surface cleaning plate 2464. When the airflow passes through the inside of the impeller 246 through the L groove 243, since the blade 2461 is inclined, the airflow passing through the impeller 246 will drive the connecting rod 2462 to rotate, allowing the connecting rod 2462 to carry the surface cleaning plate 2464 and the carbon fiber brush A2465 to clean the surface of the water cooling pipe 12.

[0042] The edge cleaning assembly 25 includes a right edge cleaning plate 251 movably arranged inside the left wide groove 244, an inner groove 252 opened on one side of the right edge cleaning plate 251, teeth 253 fixedly installed on the top and bottom of the inner groove 252, a round rod 254 movably arranged inside the surface cleaning assembly 24, a roller 255 fixedly installed on the outer surface of the round rod 254, the outer surface of the roller 255 is in contact with the surface of the water cooling tube 12, a half gear 256 sleeved on the outer surface of the round rod 254, the half gear 256 is meshed with the teeth 253, a carbon fiber brush B258 is fixedly installed on one side of the right edge cleaning plate 251, and a short plate is fixedly installed on one side of the right edge cleaning plate 251 2581, a left edge cleaning plate 259 is fixedly installed on one side of the short plate 2581, and a carbon fiber brush B258 is also fixedly installed on one side of the left edge cleaning plate 259. The edge cleaning component 25 is slidably connected to the right wide groove 245, and the left edge cleaning plate 259 is slidably connected to the horizontal groove 247. The rotation of the roller 255 can make the half gear 256 engage with the top and bottom teeth 253 respectively, so that the right edge cleaning plate 251 can move back and forth, allowing the carbon fiber brush B258 to reciprocate and clean both sides of the bend of the water-cooling pipe 12. Through the high temperature resistance of the carbon fiber brush B258 itself, cleaning work can also be performed when the boiler body 1 is burning.

[0043] A horizontal plate 257 is fixedly installed on the other side of the right edge cleaning plate 251, and the horizontal plate 257 is slidably connected to the horizontal groove 247. Through the horizontal plate 257 and the horizontal groove 247, the edge cleaning assembly 25 and the carbon fiber brush B258 of the left edge cleaning plate 259 can always fit in the bend of the water cooling pipe 12.

[0044] The scraper assembly 26 includes a telescopic rod 261 fixedly installed inside the surface cleaning assembly 24, a hole groove opened inside the telescopic rod 261, an air inlet pipe 262 fixedly installed on the outer surface of the telescopic rod 261, and a scraper 263 fixedly installed at one end of the telescopic rod 261, a compression spring is fixedly installed on the upper surface of the scraper 263, and the other end of the compression spring is fixedly installed on the top of the telescopic rod 261, a long plate 264 is slidably arranged inside the plate groove 237, one side of the scraper 263 is in contact with the vertical part of the water-cooling pipe 12, and after the gas enters the hole groove through the air inlet pipe 262, the telescopic rod 261 can bend the scraper 263 to descend, thereby scraping off the dust at the vertical part of the water-cooling pipe 12, and then the scraper 263 can be reset by the compression spring to prepare for the next scraping.

[0045] A connecting hole 2641 and a rectangular groove 2643 are provided on one side of the long plate 264, and an L tube 2642 is provided on the other side of the long plate 264. One end of the connecting hole 2641 is connected to the air outlet 235, and the connecting hole 2641 is adapted to the air inlet pipe 262. A cross bar 2644 is fixedly installed on the inner wall of the rectangular groove 2643, and a flip plate A2645 is sleeved on the outer surface of the cross bar 2644. The other end of the flip plate A2645 is also sleeved on the cross bar 2644. The flip plate A2645 is located inside the triangular groove 238, and the outer surface of the other end of the long plate 264 is sleeved. A surface flip plate B2646 is provided, and a cross bar 2644 is movably provided inside the flip plate B2646. The flip plate B2646 is located inside the circular groove 236. The connecting hole 2641 can be connected with the L tube 2642 through the flip plate A2645, so that the gas can enter the empty groove, thereby extending the telescopic rod 261 and lowering the scraper 263. The connecting hole 2641 and the L tube 2642 can be dislocated through the surface cleaning plate 2464, thereby cutting off the gas from entering the empty groove and allowing the compression spring to restore the telescopic rod 261.

[0046] There are multiple groups of water-cooling pipes 12 and water-cooling walls 11, and the connecting components 23 are located directly between each group of water-cooling pipes 12. The surface cleaning components 24 are located on the upper and lower surfaces of the water-cooling pipes 12. The short soot blowing pipe inside the short-rod soot blower 31 is located between each group of water-cooling walls 11. Lift valves are fixedly installed on the upper surfaces of the long-rod soot blower 21 and the short-rod soot blower 31. An air supply pipe is arranged inside the lift valve, and the air supply pipe is respectively connected with the soot blowing pipe 22 and the short soot blowing pipe. The surfaces of the two groups of water-cooling pipes 12 can be cleaned at the same time through the surface cleaning components 24, and the vertical surfaces of the two groups of water-cooling pipes 12 can also be cleaned at the same time through the soot scraping components 26. Finally, the size of the lift valve opening can be adjusted according to the working status of the boiler.

[0047] Specifically, when the boiler needs to use the short-rod soot blower 31 at a load of 25%-50%, it is only necessary to increase the opening of the lifting valve, and then the gas will enter the lifting valve through the soot blowing mother pipe, and then the gas will enter the short soot blowing pipe inside the short-rod soot blower 31 through the lifting valve. After the gas enters the interior of the lifting valve, the driving motor of the short-rod soot blower 31 is started, and the short soot blower is rotated to enter the interior of the boiler body 1, and the short soot blowing pipe will blow away the dust on the surface of the water-cooled wall 11. When the short soot blowing pipe is blowing soot, the motor 322 is started to rotate the shaft 3221 with the pinion 3222, so that the casing 3223 rotates with the tilting ring 3225. Since the tilting ring 3225 is in a tilted state, when the tilting ring 3225 rotates When the boiler body 1 is rotated, the slider 3226 located on the outer surface of the inclined ring 3225 will move back and forth, thereby causing the knocking plate 3227 to continuously knock on the outer wall of the boiler body 1, so that the dust on the surface of the water-cooled wall 11 falls off due to the vibration. When the long soot blowing pipe 22 is needed, the lifting valve inside the long rod soot blower 21 is opened to allow gas to enter the long soot blowing pipe 22. When the lifting valve inside the long rod soot blower 21 is opened, the driving motor of the reciprocating threaded rod 27 and the driving motor inside the long rod soot blower 21 are started, so that the long soot blowing pipe 22 and the reciprocating threaded rod 27 rotate at the same time. As the long soot blowing pipe 22 rotates, the sliding rod inside the rod hole 242 will move along the threaded groove opened on the surface of the reciprocating threaded rod 27, causing the connecting component 23 and the surface cleaning component 24 to move. Move slowly. When the gas enters the long soot blowing pipe 22 and is finally sprayed out, the dust on the surface of the water-cooling pipe 12 will be preliminarily cleaned. When the gas enters the long soot blowing pipe 22, a part of the gas in the long soot blowing pipe 22 will enter the air cavity 233, and then enter the air outlet 235 and the L groove 243 through the air cavity 233 and the guide plate A234. The impeller 246 at one end of the L groove 243 will drive the blade 2461 to rotate due to the output of the air flow, and the rotation of the blade 2461 will drive the entire impeller 246 to rotate. Since the connecting component 23 can contain the air holes of the two long soot blowing pipes 22, the air cavity 233 is always in an inflated state. When the long plate 264 starts to rotate, the lower surface of the surface cleaning plate 2464 The carbon fiber brush A2465 will clean the dust remaining on the surface of the water-cooling pipe 12. When the surface cleaning component 24 starts to move, the roller 255 inside the surface cleaning component 24 will contact the surface of the water-cooling pipe 12 and roll, so that the half gear 256 will mesh with the teeth 253 inside the inner groove 252 in turn, thereby driving the right edge cleaning plate 251 to reciprocate. As the right edge cleaning plate 251 reciprocates, the left edge cleaning plate 259 will also reciprocate because it is fixedly connected to the short plate 2581, and the short plate 2581 is fixedly connected to the left edge cleaning plate 259, so that the carbon fiber brush B258 can further clean the dust at the bend of the water-cooling pipe 12. When the gas enters the inside of the gas outlet 235,Part of the gas inside the gas outlet 235 will enter the L tube 2642, and directly enter the hole groove inside the telescopic rod 261 through the connecting hole 2641. When the gas enters the hole groove, the gas brings the scraper 263 down, so that the compression spring inside the hole groove stretches, and the scraper 263 further cleans the dust on the vertical surface of the water cooling tube 12. When the telescopic rod 261 continues to extend, the scraper 263 will contact the flip plate B2646, causing the flip plate B2646 to flip, thereby pushing up the long plate 264, so that the connecting hole 2641 and the L tube 2642 are misaligned. At this time, the air inlet pipe 262 will be located in the rectangular At the slot 2643, as the long plate 264 moves, the gas will not enter the telescopic rod 261, and the compression spring will be reset, allowing the gas inside the hole slot to be discharged into the rectangular slot 2643 through the air inlet pipe 262. When the compression spring begins to reset, the scraper 263 will also reset with the compression spring. At the same time as the scraper 263 resets, the vertical surface of the water-cooling pipe 12 can be cleaned again. So far, the cleaning of the knocking component 32 and the connecting component 23, the surface cleaning component 24, the edge cleaning component 25 and the scraping component 26 improves the dust cleaning effect inside the boiler body 1.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic soot blowing control system for a boiler in a thermal power plant, characterized in that: A first support plate (2) and a second support plate (3) are fixedly mounted on one side of the boiler body (1); a water-cooled wall (11) and a water-cooled pipe (12) are fixedly mounted on the inner wall of the boiler body (1); a short-rod soot blower (31) is fixedly mounted on the upper surface of the second support plate (3); a short soot blowing pipe is arranged inside the short-rod soot blower (31); a knocking assembly (32) for knocking the water-cooled wall (11) is fixedly mounted on one end of the short-rod soot blower (31); and the knocking assembly (32) is sleeved on the outer surface of the short soot blowing pipe; A long rod soot blower (21) is fixedly mounted on the upper surface of the first support plate (2), a long soot blowing pipe (22) is arranged inside the long rod soot blower (21), a reciprocating threaded rod (27) is arranged on the inner wall of the boiler body (1), a connecting component (23) for conveying gas is sleeved on the outer surface of the long soot blowing pipe (22), both ends of the connecting component (23) are fixedly mounted with surface cleaning components (24) for cleaning the upper surface and the lower surface of the water cooling pipe (12), an edge cleaning component (25) for cleaning both sides of the bending part of the water cooling pipe (12) is movably arranged inside the surface cleaning component (24), and a scraping component (26) for scraping both sides of the vertical part of the water cooling pipe (12) is fixedly mounted inside the surface cleaning component (24); The knocking assembly (32) comprises a shell (321) fixedly mounted on one side of the short rod soot blower (31), an arc groove (3211) and a slide groove (3212) provided on the outer surface of the shell (321), and a plurality of slide grooves (3212) are provided. A motor (322) is fixedly mounted on one side of the knocking assembly (32), a rotating shaft (3221) is provided at the output end of the motor (322), a pinion (3222) is fixedly mounted at one end of the rotating shaft (3221), a sleeve (3223) is provided inside the shell (321), and a sleeve (3223) is provided on the outer surface of the sleeve (3223) A large gear (3224) is provided, the large gear (3224) is meshed with a small gear (3222), a tilting ring (3225) and a slider (3226) are fixedly installed on the outer surface of the casing (3223), the slider (3226) is slidably connected to the casing (3223), a groove (3228) is provided at the bottom of the slider (3226), the groove (3228) is slidably connected to the tilting ring (3225), a knocking plate (3227) is fixedly installed on the top of the tilting ring (3225), and the knocking plate (3227) is slidably connected to the slide groove (3212).

2. The automatic soot blowing control system for a thermal power plant boiler according to claim 1, characterized in that: The connecting component (23) comprises a connecting plate (231) sleeved on the outer surface of the long soot blowing pipe (22), a pipe opening (232) and an air cavity (233) provided inside the connecting plate (231), the pipe opening (232) being adapted to the long soot blowing pipe (22), a guide plate A (234) being fixedly installed at the top and bottom of the air cavity (233), an air outlet (235) penetrating the upper surface of the connecting component (23), the air outlet (235) penetrating the guide plate A (234), circular grooves (236) being provided on both sides of the connecting component (23), a plate groove (237) being provided at the top of the circular groove (236), and a triangular groove (238) being provided on the inner wall of the plate groove (237).

3. The automatic soot blowing control system for a thermal power plant boiler according to claim 2, characterized in that: The surface cleaning component (24) comprises a top plate (241) fixedly mounted at both ends of the connecting component (23), a rod hole (242) provided on one side of the top plate (241) and an L-groove (243) provided on the lower surface of the top plate (241); the L-groove (243) is connected to the air outlet (235); a left wide groove (244) and a right wide groove (245) are provided on the lower surface of the top plate (241); two groups of the left wide groove (244) and the right wide groove (245) are provided; an edge cleaning component (25) is movably provided inside the left wide groove (244); an impeller (246) is rotatably connected to the inner wall of the other end of the L-groove (243); the impeller (246) and the water cooling pipe (12) are on the same vertical line; and a horizontal groove (247) is provided on the inner wall of the right wide groove (245).

4. The automatic soot blowing control system for a thermal power plant boiler as claimed in claim 3, characterized in that: A sliding rod is fixedly installed inside the rod hole (242), and the sliding rod is slidably connected to the reciprocating thread provided on the surface of the reciprocating threaded rod (27). A driving motor is fixedly installed on the outer wall of the boiler body (1), and the output end of the driving motor is connected to one end of the reciprocating threaded rod (27).

5. The automatic soot blowing control system for a thermal power plant boiler as claimed in claim 3, characterized in that: The impeller (246) has a blade (2461) fixedly mounted inside, a connecting rod (2462) fixedly mounted at one end of the blade (2461), a guide plate B (2463) fixedly mounted on the upper surface of the connecting rod (2462), a surface cleaning plate (2464) fixedly mounted on the lower surface of the connecting rod (2462), and a carbon fiber brush A (2465) disposed on the lower surface of the surface cleaning plate (2464).

6. The automatic soot blowing control system for a thermal power plant boiler as claimed in claim 3, characterized in that: The edge cleaning assembly (25) comprises a right edge cleaning plate (251) movably arranged inside the left wide groove (244), an inner groove (252) provided on one side of the right edge cleaning plate (251), teeth (253) fixedly installed at the top and bottom of the inner groove (252), a round rod (254) movably arranged inside the surface cleaning assembly (24), a roller (255) fixedly installed on the outer surface of the round rod (254), the outer surface of the roller (255) being in contact with the surface of the water cooling tube (12), and a half gear (255) sleeved on the outer surface of the round rod (254). 6), the half gear (256) is meshed with the tooth (253), a carbon fiber brush B (258) is fixedly installed on one side of the right edge cleaning plate (251), a short plate (2581) is fixedly installed on one side of the right edge cleaning plate (251), a left edge cleaning plate (259) is fixedly installed on one side of the short plate (2581), and a carbon fiber brush B (258) is also fixedly installed on one side of the left edge cleaning plate (259), the edge cleaning assembly (25) is slidably connected to the right wide groove (245), and the left edge cleaning plate (259) is slidably connected to the horizontal groove (247).

7. The automatic soot blowing control system for a thermal power plant boiler according to claim 6, characterized in that: A horizontal plate (257) is fixedly mounted on the other side of the right edge cleaning plate (251), and the horizontal plate (257) is slidably connected to the horizontal groove (247).

8. The automatic soot blowing control system for a thermal power plant boiler as claimed in claim 3, characterized in that: The scraper assembly (26) comprises a telescopic rod (261) fixedly mounted inside the surface cleaning assembly (24), a hole groove provided inside the telescopic rod (261), an air inlet pipe (262) fixedly mounted on the outer surface of the telescopic rod (261), and a scraper (263) fixedly mounted on one end of the telescopic rod (261), a compression spring fixedly mounted on the upper surface of the scraper (263), the other end of the compression spring fixedly mounted on the top of the telescopic rod (261), a long plate (264) slidably arranged inside the plate groove (237), and one side of the scraper (263) is in contact with the vertical portion of the water cooling tube (12).

9. The automatic soot blowing control system for a thermal power plant boiler according to claim 8, characterized in that: A connecting hole (2641) and a rectangular groove (2643) are provided on one side of the long plate (264), and an L tube (2642) is provided on the other side of the long plate (264). One end of the connecting hole (2641) is connected to the air outlet (235), and the connecting hole (2641) is adapted to the air inlet pipe (262). A cross bar (2644) is fixedly installed on the inner wall of the rectangular groove (2643), and a flip plate A (2645) is sleeved on the outer surface of the cross bar (2644). The other end of the flip plate A (2645) is also sleeved on the cross bar (2644), and the flip plate A (2645) is located inside the triangular groove (238). A surface flip plate B (2646) is movably sleeved on the outer surface of the other end of the long plate (264), and a cross bar (2644) is movably provided inside the flip plate B (2646), and the flip plate B (2646) is located inside the circular groove (236).

10. The automatic soot blowing control system for a thermal power plant boiler according to claim 1, characterized in that: The water-cooling tubes (12) and the water-cooling walls (11) are provided with a plurality of groups, the connecting components (23) are located between each group of water-cooling tubes (12), the surface cleaning components (24) are located on the upper and lower surfaces of the water-cooling tubes (12), the short soot blowing pipes inside the short-rod soot blowers (31) are located between each group of water-cooling walls (11), the upper surfaces of the long-rod soot blowers (21) and the short-rod soot blowers (31) are fixedly mounted with lifting valves, the lifting valves are provided with air supply pipes inside, and the air supply pipes are respectively connected with the long soot blowing pipes (22) and the short soot blowing pipes.

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