Soot blower for horizontal flue of boiler

Abstract

The invention discloses a soot blowing device for a horizontal flue of a boiler, and particularly relates to the technical field of soot blowing of boilers, the soot blowing device comprises a supporting frame, an electric cylinder, an upward moving frame plate and a moving butt-joint sealing assembly; wherein the movable adjusting sealing assembly comprises a screw rod, a speed reducing motor, a sleeving block, a linkage frame plate, a sleeving block, an air blowing pipe, a soot blowing hopper, a pressurizing hose and a sealing filler strip, and further comprises a scraping cleaning assembly and a double-pressurizing assembly. The movable butt-joint sealing assembly is adopted, and the movable butt-joint sealing assembly has the advantages that a soot blowing hopper drives a sealing filler strip to extrude the opening part of the horizontal flue of the boiler, sealing butt joint can be adjusted, dust and impurities can be efficiently cleaned in a butt-joint mode, and the dust cleaning effect is greatly improved, so that the problems that sealing butt joint is difficult to adjust, and dust is difficult to clean are solved. And meanwhile, more stubborn dust exists in the flue, dust and impurities are difficult to clean, and the dust cleaning effect is poor.

Description

Technical Field

[0001] The present invention relates to the technical field of boiler soot blowing, and more particularly to a soot blowing device for a horizontal flue of a boiler. Background Art

[0002] The sootblowing device used in the horizontal flue of the boiler is mainly used when the boiler is in operation for a long time, and a large amount of dust will accumulate in the horizontal flue. If it is not cleaned in time, the accumulated dust will reduce the heat transfer efficiency of the boiler, increase the exhaust temperature, reduce the boiler efficiency, and in serious cases may even cause safety accidents such as superheater tube burst. Therefore, the sootblowing device can ensure the safe operation of the boiler by removing the dust in the horizontal flue.

[0003] After searching the existing published technical documents, the Chinese patent announcement number CN112594724A discloses an intelligent sonic soot blower device for the horizontal flue of a large power plant boiler, in which a turbo fan is installed in the upper part of the lower ash hopper, and an ash outlet is provided at the lower port of the lower ash hopper. The intelligent sonic soot blower device for the horizontal flue of a large power plant boiler has a reasonable structure, which is convenient for regular soot blowing of the horizontal flue, and the lower ash outlet and lower ash hopper are arranged on the right part of the bottom surface of the horizontal flue, which is convenient for collecting flue dust, and both soot blowing and soot collection are convenient and trouble-free. However, the technology still has the following problems.

[0004] When the sootblowing device is sootblowing the horizontal flue of the boiler, it is difficult to adjust the sealing connection due to the different positions of the flue during the sootblowing process. At the same time, there is a lot of stubborn dust inside the flue, making it difficult to clean the dust and impurities, and the dust cleaning effect is poor. Summary of the invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides the following technical solutions: a sootblowing device for a horizontal flue of a boiler, comprising a supporting frame, an electric cylinder and an upper moving frame plate, the electric cylinder being fixed to the inner wall of the supporting frame, the upper moving frame plate being fixed to the output end of the electric cylinder, and a movable docking sealing assembly being arranged inside the upper moving frame plate; the movable adjusting sealing assembly comprises a screw rotatably arranged inside the upper moving frame plate, and a reduction motor is fixedly connected to one side of the upper moving frame plate, the reduction motor is used to drive the screw to rotate, a sleeve block is threadedly connected to the outer wall of the screw, and a linkage frame plate is fixedly connected to the upper surface of the sleeve block; a sleeve block is fixedly installed at the bottom end of the linkage frame plate, and an air blowing pipe is fixedly connected to the inner wall of the sleeve block, one end of the air blowing pipe is fixedly connected to a sootblowing hopper, and the other end of the air blowing pipe is fixedly connected to a boost hose, and a sealing pad strip is bonded to one side of the sootblowing hopper; a scraping cleaning assembly is arranged on the upper surface of the linkage frame plate; a double boost assembly is installed at the bottom end of the supporting frame.

[0006] Preferably, the sleeve block is slidably connected to the upper frame plate, and the outer wall of the sleeve block and the inner wall of the upper frame plate are both smooth surfaces. The sealing strip is made of rubber material, and the inner wall of the soot blowing hopper is a smooth surface, and the air blowing pipe is connected to the soot blowing hopper.

[0007] In this technical solution, the output end of the electric cylinder drives the upward frame plate to move upward, the screw rod causes the sleeve block to move upward, the linkage frame plate drives the sleeve block to move upward, and the soot blowing bucket drives the sealing gasket strip to move upward. When the sealing gasket strip moves to the interface position of the boiler horizontal flue, the reduction motor drives the screw rod to rotate, the sleeve block drives the linkage frame plate to move left, the sleeve block drives the air blowing pipe to move left, and the soot blowing bucket drives the sealing gasket strip to squeeze at the mouth of the boiler horizontal flue.

[0008] Preferably, the scraping and cleaning assembly includes a pushing electric cylinder fixedly arranged on the upper surface of the linkage frame plate; the output end of the pushing electric cylinder is fixedly connected with a sleeve slider, and the inner wall of the sleeve slider is slidably connected with a guide column, the guide column is fixedly connected to the linkage frame plate, and the sleeve slider is slidably connected to the linkage frame plate; a push strip is fixedly installed on one side of the sleeve slider, and a push rod is fixedly installed on one end of the push strip, and a linkage rod is fixedly connected on one side of the push rod, and a shoveling knife frame is fixedly connected to one end of the linkage rod, and the linkage rod is slidably connected to the soot blowing bucket, and the pushing electric cylinder is used to push the sleeve slider to move, and the outer wall of the sleeve slider and the inner wall of the linkage frame plate are both smooth surfaces. Preferably, the vertical cross-section of the push rod is L-shaped, and the push rod and the push strip are both made of stainless steel. The outer wall of the linkage rod is a smooth surface, and the vertical cross-section of the linkage rod is circular.

[0009] In this technical solution, the electric cylinder is pushed to push the sleeve slider, and the sleeve slider slides to the right along the outer wall of the guide column. The push bar will cause the push rod to move to the right, and the push rod will drive the linkage rod to move to the right. In this way, the linkage rod drives the shoveling knife frame to shovel along the inner wall of the horizontal flue of the boiler, thereby shoveling the ash.

[0010] Preferably, the dual boost assembly comprises a boost pipe fixedly mounted on the bottom end of the support frame;

[0011] A controller is fixedly connected to one side of the boost pipe, the boost pipe is fixedly connected to the boost hose, one end of the boost pipe is fixedly connected to a boost pump, an input end of the boost pump is fixedly connected to an air intake pipe, and a support base is fixedly connected to the lower surface of the boost pump;

[0012] A boosting pipe is fixedly connected to one side of the outer wall of the boosting hose, a boosting pump is fixedly connected to one end of the boosting pipe, an infusion pipe is fixedly connected to the input end of the boosting pump, and a butt pipe is fixedly connected to the top of the infusion pipe; a support block is fixedly installed on the lower surface of the boosting pump, and the support block is fixedly connected to the support frame. The boosting pipe is connected to the boosting hose, and the inner walls of the boosting hose and the boosting pipe are both smooth surfaces. The support base is used to support the boosting pump, and the support base is made of stainless steel.

[0013] In this technical solution, the controller starts the boosting pump, the air is pressurized into the boosting pipe, and then poured into the boosting hose from the boosting pipe. At the same time, the boosting pump enables the docking pipe to pressurize the air into the pouring pipe, the boosting pipe pressurizes the air into the boosting hose, and then enters the air blowing pipe through the boosting hose, and the air blowing pipe enters the soot blowing hopper.

[0014] Technical effects and advantages of the present invention:

[0015] The present invention adopts a movable docking sealing component, the output end of the electric cylinder drives the upper frame plate to move up, the upper frame plate drives the screw to move up, the connecting block drives the linkage frame plate to move up, and the linkage frame plate drives the sleeve block to move up, the soot blowing hopper drives the sealing gasket strip to move up, the sealing gasket strip moves up to the docking position of the boiler horizontal flue, the reduction motor drives the screw to rotate, the screw drives the sleeve block to move left under the action of the thread transmission force, the linkage frame plate drives the sleeve block to move left, the sleeve block drives the air blowing pipe to move left, and the soot blowing hopper drives the sealing gasket strip to be squeezed at the mouth of the boiler horizontal flue, so that the sealing docking can be adjusted, and the dust impurities can be efficiently docked and cleaned, thereby greatly improving the dust cleaning effect.

[0016] The present invention adopts a scraping cleaning component, which pushes the electric cylinder to push the sleeve slider, and the sleeve slider drives the push bar to move right, and the sleeve slider slides right along the inner wall of the linkage frame plate, and the push bar causes the push rod to move right, and the linkage rod drives the shoveling knife frame to shovel along the inner wall of the horizontal flue of the boiler, so that a cleaning operation can be carried out on a large amount of stubborn dust inside the flue, and the cleaning effect is better.

[0017] The present invention adopts a double boosting component, and the controller starts the boosting pump, so that the air intake pipe sucks air into the boosting pump, and the air is pressurized into the boosting pipe. The boosting pump enables the docking pipe to pressurize the air into the filling pipe, and the air is pressurized into the boosting pipe through the filling pipe. The air blowing pipe enters the soot blowing hopper, and the soot blowing hopper realizes the boosted soot blowing operation on the dust inside the horizontal flue of the boiler, and the soot cleaning and blowing effect is better.

[0018] The above multiple functions interact with each other. First, the soot blowing bucket drives the sealing gasket to squeeze at the mouth of the boiler horizontal flue. Second, the linkage rod drives the shoveling knife frame to shovel along the inner wall of the boiler horizontal flue. Finally, the soot blowing bucket realizes the pressurized soot blowing operation on the dust inside the boiler horizontal flue. In summary, the sealing docking can be adjusted, and the dust impurities can be efficiently docked and cleaned, greatly improving the dust cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The figure is a schematic diagram of the overall structure of the sootblowing device for the horizontal flue of a boiler according to the present invention.

[0020] Figure 2 It is a schematic diagram of the partial structure of the connection between the electric cylinder and the support frame of the present invention.

[0021] Figure 3 It is a schematic diagram of the partial structure of the connection between the boost hose and the air blowing pipe of the present invention.

[0022] Figure 4 It is a schematic diagram of the rear structural view of the sootblowing device for the horizontal flue of a boiler according to the present invention.

[0023] Figure 5 For the present invention Figure 4 Enlarged structural diagram at A in the middle.

[0024] Figure 6 It is a schematic diagram of the partial structure of the connection between the linkage rod and the push rod of the present invention.

[0025] Figure 7 It is a schematic diagram of the partial structure of the connection between the pressure-compensating pipe and the pressure-boosting hose of the present invention.

[0026] The accompanying drawings are marked as follows: 1. Support frame; 2. Electric cylinder; 3. Upper frame plate; 4. Screw; 5. Socket block; 6. Reducer motor; 7. Linkage frame plate; 8. Socket block; 9. Air blowing pipe; 10. Booster hose; 11. Soot blowing hopper; 12. Sealing pad strip; 13. Push electric cylinder; 14. Socket slider; 15. Guide column; 16. Push strip; 17. Push rod; 18. Linkage rod; 19. Shovel knife frame; 20. Booster pipe; 21. Controller; 22. Booster pump; 23. Support base; 24. Inlet pipe; 25. Supplementary pressure pipe; 26. Supplementary pressure pump; 27. Filling pipe; 28. Butt pipe; 29. ​​Support block. DETAILED DESCRIPTION

[0027] 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.

[0028] As attached Figure 1 - Attachment Figure 7 A sootblowing device for a horizontal flue of a boiler is shown. The sootblowing device for a horizontal flue of a boiler is provided with a movable docking sealing component, a scraping cleaning component, and a double boosting component. The settings of various mechanisms and components can be adjusted for sealed docking, and efficient docking and cleaning of dust and impurities can be achieved, greatly improving the dust cleaning effect. The specific structural settings of various mechanisms and components are as follows.

[0029] In this technical solution, as shown in the attached Figure 1 - Attachment Figure 3 As shown, the electric cylinder 2 is fixed on the inner wall of the supporting frame 1, the upper frame plate 3 is fixed on the output end of the electric cylinder 2, and a movable docking sealing assembly is provided inside the upper frame plate 3; the movable adjustment sealing assembly includes a screw 4 rotatably arranged inside the upper frame plate 3, and a reduction motor 6 is fixedly connected to one side of the upper frame plate 3, and the reduction motor 6 is used to drive the screw 4 to rotate, and a socket block 5 is threadedly connected to the outer wall of the screw 4, and a linkage frame plate 7 is fixedly connected to the upper surface of the socket block 5; a socket block 8 is fixedly installed at the bottom end of the linkage frame plate 7, and an air blowing pipe 9 is fixedly connected to the inner wall of the socket block 8, one end of the air blowing pipe 9 is fixedly connected to a soot blowing hopper 11, and the other end of the air blowing pipe 9 is fixedly connected to a boost hose 10, and a sealing pad strip 12 is bonded to one side of the soot blowing hopper 11; a scraping cleaning assembly is provided on the upper surface of the linkage frame plate 7; a double boost assembly is installed at the bottom end of the supporting frame 1.

[0030] In this technical solution, as shown in the attached Figure 4 - Attachment Figure 6 As shown, the scraping and cleaning assembly includes a pushing electric cylinder 13 fixedly arranged on the upper surface of the linkage frame plate 7; the output end of the pushing electric cylinder 13 is fixedly connected with a sleeve slider 14, and the inner wall of the sleeve slider 14 is slidably connected with a guide column 15, the guide column 15 is fixedly connected to the linkage frame plate 7, and the sleeve slider 14 is slidably connected to the linkage frame plate 7; a push bar 16 is fixedly installed on one side of the sleeve slider 14, and a push rod 17 is fixedly installed on one end of the push bar 16, and a linkage rod 18 is fixedly connected to one side of the push rod 17, and a shoveling knife frame 19 is fixedly connected to one end of the linkage rod 18, and the linkage rod 18 is slidably connected to the soot blowing bucket 11.

[0031] The push cylinder 13 is used to push the sleeve slider 14 to move, and the outer wall of the sleeve slider 14 and the inner wall of the linkage frame plate 7 are both smooth surfaces. The vertical cross-section of the push rod 17 is L-shaped, and the push rod 17 and the push strip 16 are both made of stainless steel. The outer wall of the linkage rod 18 is a smooth surface, and the vertical cross-section of the linkage rod 18 is circular.

[0032] In this technical solution, as shown in the attached Figure 7 As shown, the dual boost assembly includes a boost pipe 20 fixedly installed at the bottom end of the support frame 1; a controller 21 is fixedly connected to one side of the boost pipe 20, the boost pipe 20 is fixedly connected to the boost hose 10, and one end of the boost pipe 20 is fixedly connected to a boost pump 22, the input end of the boost pump 22 is fixedly connected to an intake pipe 24, and a support base 23 is fixedly connected to the lower surface of the boost pump 22.

[0033] A pressure boosting pipe 25 is fixedly connected to one side of the outer wall of the boosting hose 10, a pressure boosting pump 26 is fixedly connected to one end of the pressure boosting pipe 25, an inlet pipe 27 is fixedly connected to the input end of the pressure boosting pump 26, and a butt joint pipe 28 is fixedly connected to the top end of the inlet pipe 27;

[0034] A support block 29 is fixedly mounted on the lower surface of the booster pump 26, and the support block 29 is fixedly connected to the support frame 1. The booster pipe 25 is connected to the booster hose 10, and the inner walls of the booster hose 10 and the booster pipe 20 are both smooth surfaces. The support base 23 is used to support the booster pump 22, and the support base 23 is made of stainless steel.

[0035] The working principle of the soot blowing device for the horizontal flue of a boiler according to the present invention is as follows:

[0036] Step 1, when moving the docking seal, the electric cylinder 2 is started through the controller 21, and the support frame 1 supports the electric cylinder 2, the output end of the electric cylinder 2 drives the upper frame plate 3 to move upward, the upper frame plate 3 drives the screw 4 to move upward, the screw 4 makes the sleeve block 5 move upward, the sleeve block 5 drives the linkage frame plate 7 to move upward, and the linkage frame plate 7 drives the sleeve block 8 to move upward, the sleeve block 8 makes the air blowing pipe 9 move upward, and the air blowing pipe 9 can drive the soot blowing hopper 11 to move upward, the soot blowing hopper 11 drives the sealing gasket strip 12 to move upward, when the sealing gasket strip 12 moves up to the horizontal flue docking position of the boiler.

[0037] The reduction motor 6 is started through the controller 21, and the reduction motor 6 drives the screw 4 to rotate, and the screw 4 drives the sleeve block 5 to move left under the action of the thread transmission force, and the sleeve block 5 drives the linkage frame plate 7 to move left, the linkage frame plate 7 drives the sleeve block 8 to move left, the sleeve block 8 drives the air blowing pipe 9 to move left, the air blowing pipe 9 makes the soot blowing hopper 11 move left, the soot blowing hopper 11 drives the sealing gasket strip 12 to be squeezed at the mouth of the boiler horizontal flue, and is connected and docked with the boiler horizontal flue through the soot blowing hopper 11.

[0038] Step 2, when scraping and cleaning, start the pushing electric cylinder 13, and the pushing electric cylinder 13 pushes the sleeve slider 14, and the sleeve slider 14 drives the push bar 16 to move right, and the sleeve slider 14 slides right along the outer wall of the guide column 15. At the same time, the sleeve slider 14 slides right along the inner wall of the linkage frame plate 7, and the push bar 16 will cause the push rod 17 to move right, and the push rod 17 drives the linkage rod 18 to move right, and the linkage rod 18 slides right along the inner wall of the soot blowing hopper 11, so that the linkage rod 18 drives the shoveling knife frame 19 to shovel along the inner wall of the horizontal flue of the boiler, thereby shoveling the ash.

[0039] Step three, during double-boost sootblowing, the booster pump 22 is supported by the support base 23, and the controller 21 starts the booster pump 22, so that the air inlet pipe 24 sucks air into the booster pump 22, the air is pressurized into the booster pipe 20, and the air is poured into the booster hose 10 by the booster pipe 20, and at the same time, the booster pump 26 enables the docking pipe 28 to pressurize the air into the filling pipe 27, and the air is pressurized into the booster pipe 25 through the filling pipe 27, and the booster pipe 25 pressurizes the air into the booster hose 10, and the air enters the air blowing pipe 9 through the booster hose 10, and the air blowing pipe 9 enters the soot blowing hopper 11, and the soot blowing hopper 11 realizes the boosted sootblowing operation on the dust inside the horizontal flue of the boiler.

[0040] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, and the model parameters of each electrical appliance are not specifically limited, and conventional equipment can be used. In this technical solution, the electrical control components not mentioned are not shown in the figure because they belong to the prior art and will not be described here.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sootblowing device for a horizontal flue of a boiler, comprising a support frame (1), an electric cylinder (2) and an upward moving frame plate (3), wherein the electric cylinder (2) is fixed to the inner wall of the support frame (1), and the upward moving frame plate (3) is fixed to the output end of the electric cylinder (2), characterized in that: A movable docking sealing assembly is provided inside the upward moving frame plate (3); The movable and adjustable sealing assembly comprises a screw (4) rotatably arranged inside an upper moving frame plate (3), and a reduction motor (6) is fixedly connected to one side of the upper moving frame plate (3), the reduction motor (6) is used to drive the screw (4) to rotate, the outer wall of the screw (4) is threadedly connected to a sleeve block (5), and the upper surface of the sleeve block (5) is fixedly connected to a linkage frame plate (7); A sleeve block (8) is fixedly mounted on the bottom end of the linkage frame plate (7), and an air blowing pipe (9) is fixedly connected to the inner wall of the sleeve block (8), one end of the air blowing pipe (9) is fixedly connected to a soot blowing hopper (11), and the other end of the air blowing pipe (9) is fixedly connected to a boost hose (10), and a sealing gasket strip (12) is bonded to one side of the soot blowing hopper (11); The upper surface of the linkage frame plate (7) is provided with a scraping and cleaning component; A double booster assembly is installed at the bottom end of the support frame (1).

2. A sootblowing device for a horizontal flue of a boiler according to claim 1, characterized in that: The sleeve block (5) is slidably connected to the upwardly movable frame plate (3), and the outer wall of the sleeve block (5) and the inner wall of the upwardly movable frame plate (3) are both smooth surfaces.

3. A sootblowing device for a horizontal flue of a boiler according to claim 1, characterized in that: The sealing gasket strip (12) is made of rubber material, and the inner wall of the soot blowing hopper (11) is a smooth surface. The air blowing pipe (9) is connected to the soot blowing hopper (11).

4. A sootblowing device for a horizontal flue of a boiler according to claim 1, characterized in that: The scraping and cleaning assembly comprises a pushing electric cylinder (13) fixedly arranged on the upper surface of the linkage frame plate (7); The output end of the pushing electric cylinder (13) is fixedly connected to a sleeve sliding block (14), and the inner wall of the sleeve sliding block (14) is slidably connected to a guide column (15), the guide column (15) is fixedly connected to the linkage frame plate (7), and the sleeve sliding block (14) is slidably connected to the linkage frame plate (7); A push bar (16) is fixedly mounted on one side of the sleeve sliding block (14), and a push rod (17) is fixedly mounted on one end of the push bar (16), a linkage rod (18) is fixedly connected to one side of the push rod (17), a shoveling knife frame (19) is fixedly connected to one end of the linkage rod (18), and the linkage rod (18) is slidably connected to the soot blowing bucket (11).

5. A sootblowing device for a horizontal flue of a boiler according to claim 4, characterized in that: The pushing electric cylinder (13) is used to push the sleeve sliding block (14) to move, and the outer wall of the sleeve sliding block (14) and the inner wall of the linkage frame plate (7) are both smooth surfaces.

6. A sootblowing device for a horizontal flue of a boiler according to claim 4, characterized in that: The vertical cross-section of the push rod (17) is L-shaped, and the push rod (17) and the push bar (16) are both made of stainless steel. The outer wall of the linkage rod (18) is a smooth surface, and the vertical cross-section of the linkage rod (18) is circular.

7. A sootblowing device for a horizontal flue of a boiler according to claim 1, characterized in that: The dual booster assembly comprises a booster pipe (20) fixedly mounted on the bottom end of the support frame (1); A controller (21) is fixedly connected to one side of the boosting pipe (20), the boosting pipe (20) is fixedly connected to the boosting hose (10), and one end of the boosting pipe (20) is fixedly connected to a boosting pump (22), an input end of the boosting pump (22) is fixedly connected to an intake pipe (24), and a support base (23) is fixedly connected to the lower surface of the boosting pump (22); A pressure compensating pipe (25) is fixedly connected to one side of the outer wall of the boosting hose (10), a pressure compensating pump (26) is fixedly connected to one end of the pressure compensating pipe (25), an inlet pipe (27) is fixedly connected to the input end of the pressure compensating pump (26), and a butt joint pipe (28) is fixedly connected to the top end of the inlet pipe (27); A support block (29) is fixedly mounted on the lower surface of the booster pump (26), and the support block (29) is fixedly connected to the support frame (1).

8. A sootblowing device for a horizontal flue of a boiler according to claim 7, characterized in that: The pressure-compensating pipe (25) is connected to the pressure-boosting hose (10), and the inner walls of the pressure-boosting hose (10) and the pressure-boosting pipe (20) are both smooth surfaces.

9. A sootblowing device for a horizontal flue of a boiler according to claim 7, characterized in that: The support base (23) is used to support the booster pump (22), and the support base (23) is made of stainless steel.

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