An online high-pressure backwashing device for boiler denitration electric heater system

Abstract

The utility model relates to the technical field of high-pressure backwashing of boiler denitration electric heaters, and discloses an online high-pressure backwashing device for a boiler denitration electric heater system, comprising an electric heater main body, a heating tube is arranged at the bottom of the electric heater main body, a synchronous swing mechanism is arranged outside the heating tube, a motor is started by the synchronous swing mechanism, a rotating rod is driven by the motor to rotate, and at the same time a moving column drives the moving rod to rotate with a connecting sleeve connection point as the central axis, and at the same time a No. 1 gear drives a No. 2 gear to rotate, and then a rotating column drives an angle adjustment rod to rotate with a connecting sleeve connection point as the axis, so that the angle adjustment rod can drive a high-pressure nozzle to swing up and down, thereby further expanding the cleaning area of ​​the high-pressure nozzle, and a proper swing angle can ensure that the gas can evenly and effectively cover the surface of the flushing part, so as to achieve the best cleaning effect, thereby reducing the blockage rate of the heater, greatly reducing the maintenance cost, and ensuring the stable operation of the boiler denitration heater.

Description

Technical Field

[0001] The utility model relates to the technical field of high-pressure backwashing of boiler denitration electric heaters, in particular to an online high-pressure backwashing device for a boiler denitration electric heater system. Background Art

[0002] During the operation of the boiler denitration heater, the hot air of the flue system contains a lot of dust and sand due to the quality of the burning coal, which in turn blocks the heat dissipation channel of the denitration heater heating tube. After high-temperature heating, it forms coke, causing local overheating and burning the heating tube, damaging the heater. Replacing the heater requires a lot of work and complicated disassembly and lifting work, and the repair of the heater is expensive. Although the inlet and outlet doors can be closed during the standby period of the denitration electric heating to reduce the intake of air and dust, an irreversible burning accident can occur in a short time during operation, so a high-pressure backwashing device is required.

[0003] In the existing technology, the high-pressure backwashing device is usually composed of a high-pressure pump, a nozzle, a pipeline, and a system. The nozzle is located in the backwashing system and is used to direct high-pressure air to the part that needs to be cleaned to ensure the cleaning effect. However, in actual use, the device directs the high-pressure air to the specified position through the high-pressure nozzle. During the flushing process, the high-pressure nozzle cannot swing and has a narrow range, which can easily lead to uneven cleaning, excessive cleaning of some areas and insufficient cleaning of other areas, thereby affecting the overall cleaning effect. Therefore, it is necessary to improve an online high-pressure backwashing device for a boiler denitrification electric heater system. Utility Model Content

[0004] The utility model aims to provide an online high-pressure backwashing device for a boiler denitration electric heater system to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online high-pressure backwashing device for a boiler denitration electric heater system, comprising an electric heater body, a heating tube is arranged at the bottom of the electric heater body, a synchronous swing mechanism is arranged outside the heating tube, and a flushing mechanism is arranged on the right side of the internal stage of the synchronous swing mechanism;

[0006] The synchronous swing mechanism includes a synchronous component and a swing component. The swing component is arranged on the top of the synchronous component to facilitate driving the high-pressure nozzle to swing up and down, thereby expanding the flushing area.

[0007] Preferably, the synchronization component includes a fixed frame, the fixed frame is fixedly connected to the outside of the heating tube, the fixed frame is fixedly connected to a motor on the right side, the motor output end is fixedly connected to a rotating rod, the end of the rotating rod away from the motor output end is rotatably connected to a connecting rod, the end of the connecting rod away from the rotating rod is rotatably connected to a movable sleeve, a movable column is movably connected to the inner side of the movable sleeve, the movable column is fixedly connected to the outside of the movable rod, the heating tube is fixedly connected to a connecting sleeve, and the movable rod is fixedly connected to the outside of the No. 1 gear, so as to further improve the flushing effect and drive the high-pressure nozzle to swing.

[0008] Preferably, one end of the moving rod away from the moving column is rotatably connected to the outside of the connecting sleeve, and the moving sleeve is slidably connected to the outside of the connecting sleeve, so as to synchronously drive the four high-pressure nozzles to swing up and down.

[0009] Preferably, the swing assembly includes a No. 2 gear, the No. 2 gear is rotatably connected to the inner side of the fixed frame, the No. 1 bevel gear is fixedly connected to the inner side of the No. 2 gear, the No. 1 bevel gear is meshed with the No. 2 bevel gear on the outside, the No. 2 bevel gear is fixedly connected to the outer side of the No. 2 bevel gear, the outer side of the rotating plate is fixedly connected to a rotating column, and the outer side of the rotating column is movably connected to an angle adjustment rod, which is convenient for driving the angle adjustment rod to rotate around the connection point of the connecting sleeve as the axis, so as to make the high-pressure nozzle swing up and down.

[0010] Preferably, the second gear is meshed with the top of the first gear, the first bevel gear is rotatably connected to the inner side of the fixed frame, and the angle adjustment rod is rotatably connected to the inner side of the connecting sleeve, so as to drive the angle adjustment rod to rotate around the connecting point of the connecting sleeve as the axis.

[0011] Preferably, the flushing mechanism includes a high-pressure nozzle, which is fixedly connected to the inner side of the angle adjustment rod, a diverter pipe is fixedly connected to the inner side of the high-pressure nozzle, an air intake pipe is fixedly connected to the top of the diverter pipe, a control valve is provided on the outside of the air intake pipe, and a dry air generator is provided at the bottom of the air intake pipe to facilitate the spraying of high-pressure gas to quickly spray out the internal ashes.

[0012] Preferably, the number of the high-pressure nozzles is twelve, and the high-pressure nozzles are evenly distributed inside the heating tube in groups of four, so as to improve the flushing effect and speed up the flushing speed.

[0013] Compared with the prior art, the utility model provides an online high-pressure backwashing device for a boiler denitration electric heater system, which has the following beneficial effects:

[0014] 1. The online high-pressure backwashing device of the boiler denitration electric heater system starts the motor through the synchronous swing mechanism, and the motor drives the rotating rod to rotate. At the same time, the moving column drives the moving rod to rotate with the connection point of the connecting sleeve as the central axis. At the same time, the No. 1 gear drives the No. 2 gear to rotate, and the rotating column drives the angle adjustment rod to rotate with the connection point of the connecting sleeve as the axis, so that it can drive the high-pressure nozzle to swing up and down, thereby further expanding the cleaning area of ​​the high-pressure nozzle, and the appropriate swing angle can ensure that the gas can evenly and effectively cover the surface of the flushing part to achieve the best cleaning effect, thereby reducing the blockage rate of the heater, greatly reducing the maintenance cost, and ensuring the stable operation of the boiler denitration heater.

[0015] 2. The online high-pressure backwashing device of the boiler denitrification electric heater system starts the dry air generator through the provided flushing mechanism, opens the control valve, and allows the compressed air to enter the interior of the air intake pipe, and then is guided from the air intake pipe to the interior of the diversion pipe, and then from the diversion pipe, the air enters the interior of the high-pressure nozzle, and is quickly sprayed out by the high-pressure nozzle, thereby quickly removing the dust and residue inside the heating tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative labor:

[0017] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the front cross-sectional view of the utility model;

[0019] Figure 3 This is a front sectional structural diagram of the synchronous swing mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the synchronization component of the utility model;

[0021] Figure 5 It is a schematic diagram of the structure of the top view of the swing assembly of the utility model;

[0022] Figure 6 This is a schematic diagram of the appearance structure of the flushing mechanism of the utility model.

[0023] In the figure: 1. Electric heater body; 2. Heating tube; 3. Synchronous swing mechanism; 4. Flushing mechanism; 31. Synchronous assembly; 32. Swing assembly; 311. Fixed frame; 312. Motor; 313. Rotating rod; 314. Connecting rod; 315. Moving sleeve; 316. Connecting sleeve; 317. Moving column; 318. Moving rod; 319. Gear No. 1; 321. Gear No. 2; 322. Bevel gear No. 1; 323. Bevel gear No. 2; 324. Rotating plate; 325. Rotating column; 326. Angle adjustment rod; 41. Dry air generator; 42. Control valve; 43. Inlet pipe; 44. Diverter pipe; 45. High-pressure nozzle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Embodiment 1:

[0027] See also Figure 1-6 The utility model provides a technical solution: an online high-pressure backwashing device for a boiler denitration electric heater system, comprising an electric heater body 1, a heating tube 2 is arranged at the bottom of the electric heater body 1, a synchronous swing mechanism 3 is arranged outside the heating tube 2, and a flushing mechanism 4 is arranged on the right side of the internal stage of the synchronous swing mechanism 3;

[0028] The synchronous swing mechanism 3 includes a synchronous component 31 and a swing component 32. The swing component 32 is arranged on the top of the synchronous component 31 to facilitate driving the high-pressure nozzle 45 to swing up and down, thereby expanding the flushing area.

[0029] Furthermore, the synchronization component 31 includes a fixed frame 311, which is fixedly connected to the outside of the heating tube 2. A motor 312 is fixedly connected to the right side of the fixed frame 311. A rotating rod 313 is fixedly connected to the output end of the motor 312. The end of the rotating rod 313 away from the output end of the motor 312 is rotatably connected to a connecting rod 314. The end of the connecting rod 314 away from the rotating rod 313 is rotatably connected to a movable sleeve 315. A movable column 317 is movably connected to the inner side of the movable sleeve 315. A movable rod 318 is fixedly connected to the outside of the movable column 317. A connecting sleeve 316 is fixedly connected to the outside of the heating tube 2. The movable rod 318 is fixedly connected to the outside of a gear 319, so as to further improve the flushing effect and drive the high-pressure nozzle 45 to swing.

[0030] Furthermore, one end of the moving rod 318 away from the moving column 317 is rotatably connected to the outside of the connecting sleeve 316, and the moving sleeve 315 is slidably connected to the outside of the connecting sleeve 316, so as to synchronously drive the four high-pressure nozzles 45 to swing up and down.

[0031] Furthermore, the swing assembly 32 includes a second gear 321, which is rotatably connected to the inner side of the fixed frame 311, a first bevel gear 322 is fixedly connected to the inner side of the second gear 321, a second bevel gear 323 is meshed with the outer side of the first bevel gear 322, a rotating plate 324 is fixedly connected to the outer side of the second bevel gear 323, a rotating column 325 is fixedly connected to the outer side of the rotating plate 324, and an angle adjustment rod 326 is movably connected to the outer side of the rotating column 325, so as to drive the angle adjustment rod 326 to rotate around the connection point of the connecting sleeve 316 as the axis, so as to make the high-pressure nozzle 45 swing up and down.

[0032] Furthermore, the second gear 321 is meshed with the top of the first gear 319, the first bevel gear 322 is rotatably connected to the inner side of the fixed frame 311, and the angle adjustment rod 326 is rotatably connected to the inner side of the connecting sleeve 316, so as to drive the angle adjustment rod 326 to rotate around the connecting point of the connecting sleeve 316 as the axis.

[0033] Embodiment 2:

[0034] See also Figure 6 In combination with the first embodiment, it is further obtained that the flushing mechanism 4 includes a high-pressure nozzle 45, the high-pressure nozzle 45 is fixedly connected to the inner side of the angle adjustment rod 326, the inner side of the high-pressure nozzle 45 is fixedly connected to a shunt pipe 44, the top of the shunt pipe 44 is fixedly connected to an air intake pipe 43, a control valve 42 is arranged outside the air intake pipe 43, and a dry air generator 41 is arranged at the bottom of the air intake pipe 43, so as to spray out high-pressure gas quickly to spray out the internal ash.

[0035] Furthermore, there are twelve high-pressure nozzles 45 , and the high-pressure nozzles 45 are evenly distributed inside the heating tube 2 in groups of four, so as to improve the flushing effect and speed up the flushing speed.

[0036] In actual operation, when the device is used, first, the flushing mechanism 4 is provided to start the dry air generator 41, open the control valve 42, and allow the compressed air to enter the air inlet pipe 43, and then be guided to the inside of the shunt pipe 44 by the air inlet pipe 43, and then the air enters the inside of the high-pressure nozzle 45 by the shunt pipe 44, and is quickly sprayed out by the high-pressure nozzle 45. In the flushing process, the synchronous swing mechanism 3 is provided to start the motor 312, and the motor 312 drives the rotating rod 313 to rotate, and then the rotating rod 313 drives the connecting rod 314 to rotate, and at the same time, the connecting rod 314 drives the moving sleeve 315 to move along the direction of the connecting sleeve 316, and drives the moving column 316 during the movement of the moving sleeve 315. 17, at the same time, the moving column 317 drives the moving rod 318 to rotate with the connection point of the connecting sleeve 316 as the central axis, so that the moving rod 318 drives the No. 1 gear 319 to rotate, and at the same time, the No. 1 gear 319 drives the No. 2 gear 321 to rotate, and then the No. 1 bevel gear 322 drives the No. 2 bevel gear 323 to rotate, and then the No. 2 bevel gear 323 drives the rotating plate 324 to rotate, so that the rotating plate 324 drives the rotating column 325 to rotate, and the rotating column 325 drives the angle adjustment rod 326 to rotate with the connection point of the connecting sleeve 316 as the axis, so that it can drive the high-pressure nozzle 45 to swing up and down, thereby further expanding the cleaning area of ​​the high-pressure nozzle 45.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. An online high-pressure backwashing device for a boiler denitration electric heater system, comprising an electric heater body (1), characterized in that: A heating tube (2) is arranged at the bottom of the electric heater body (1), a synchronous swing mechanism (3) is arranged outside the heating tube (2), and a flushing mechanism (4) is arranged on the right side of the internal stage of the synchronous swing mechanism (3); The synchronous swing mechanism (3) comprises a synchronous component (31) and a swing component (32), wherein the swing component (32) is arranged on the top of the synchronous component (31).

2. The online high-pressure backwashing device for a boiler denitration electric heater system according to claim 1 is characterized in that: The synchronization component (31) comprises a fixed frame (311), wherein the fixed frame (311) is fixedly connected to the outside of the heating tube (2), a motor (312) is fixedly connected to the right side of the fixed frame (311), a rotating rod (313) is fixedly connected to the output end of the motor (312), an end of the rotating rod (313) away from the output end of the motor (312) is rotatably connected to a connecting rod (314), an end of the connecting rod (314) away from the rotating rod (313) is rotatably connected to a moving sleeve (315), a moving column (317) is movably connected to the inside of the moving sleeve (315), a moving column (317) is fixedly connected to the outside of the moving column (317), a connecting sleeve (316) is fixedly connected to the outside of the heating tube (2), and a first gear (319) is fixedly connected to the outside of the moving rod (318).

3. The online high-pressure backwashing device for a boiler denitration electric heater system according to claim 2 is characterized in that: One end of the moving rod (318) away from the moving column (317) is rotatably connected to the outside of the connecting sleeve (316), and the moving sleeve (315) is slidably connected to the outside of the connecting sleeve (316).

4. The online high-pressure backwashing device for a boiler denitration electric heater system according to claim 2 is characterized in that: The swing assembly (32) comprises a second gear (321), the second gear (321) is rotatably connected to the inner side of the fixed frame (311), a first bevel gear (322) is fixedly connected to the inner side of the second gear (321), a second bevel gear (323) is meshed with the outer side of the first bevel gear (322), a rotating plate (324) is fixedly connected to the outer side of the second bevel gear (323), a rotating column (325) is fixedly connected to the outer side of the rotating plate (324), and an angle adjustment rod (326) is movably connected to the outer side of the rotating column (325).

5. The online high-pressure backwashing device for a boiler denitration electric heater system according to claim 4 is characterized in that: The second gear (321) is meshed with the top of the first gear (319), the first bevel gear (322) is rotatably connected to the inner side of the fixed frame (311), and the angle adjustment rod (326) is rotatably connected to the inner side of the connecting sleeve (316).

6. The online high-pressure backwashing device for a boiler denitration electric heater system according to claim 4 is characterized in that: The flushing mechanism (4) comprises a high-pressure nozzle (45), the high-pressure nozzle (45) being fixedly connected to the inner side of the angle adjustment rod (326), a shunt pipe (44) being fixedly connected to the inner side of the high-pressure nozzle (45), an air intake pipe (43) being fixedly connected to the top of the shunt pipe (44), a control valve (42) being arranged outside the air intake pipe (43), and a dry air generator (41) being arranged at the bottom of the air intake pipe (43).

7. The online high-pressure backwashing device for a boiler denitration electric heater system according to claim 6 is characterized in that: The number of the high-pressure nozzles (45) is twelve, and the high-pressure nozzles (45) are evenly distributed inside the heating tube (2) in groups of four.

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