A swing-type sootblower applied to a radiation pass of a boiler

Abstract

The utility model provides a kind of swing type soot blower applied to boiler radiation passage, belong to boiler soot blowing technical field.Swing type soot blower includes soot blower body, travelling mechanism, drive motor, soot blower gun barrel and swing mechanism;Travelling mechanism is movably installed in soot blower body along first direction, drive motor is installed in travelling mechanism, the inlet end of soot blower gun barrel is used to connect steam pipeline, soot blower gun barrel includes steam outlet in its circumferential wall, at least two steam outlets are distributed along the radial of soot blower gun barrel;Soot blower gun barrel is installed in travelling mechanism by swing mechanism, soot blower gun barrel is limitedly cooperated with travelling mechanism in first direction, the output shaft of drive motor is connected with swing mechanism, to drive soot blower gun barrel reciprocating rotation around its axis, and the rotation angle of soot blower gun barrel is not greater than 180 degrees.The utility model reciprocating rotation soot blower gun barrel in certain angle, improve soot blowing effect to target area, while reduce steam waste.

Description

Technical Field

[0001] This utility model belongs to the field of boiler soot blowing technology, specifically relating to a swing-type soot blower applied to the radiant channel of a boiler. Background Technology

[0002] Currently, short telescopic steam sootblowers are mostly used for cleaning the radiant channels of waste heat boilers. However, this method can only clean the side walls and water-cooled walls of the radiant channels, and cannot clean the front and rear water-cooled walls. Long telescopic steam sootblowers are used in a few cases. These long telescopic steam sootblowers are generally designed for 360-degree rotating soot blowing, with the sootblower nozzle rotating as it moves forward. Although the cleaning range is wide, some water-cooled wall surfaces cannot be effectively cleaned, affecting heat transfer and thus boiler performance. Furthermore, 360-degree soot blowing is not necessary in the radiant channels, and long telescopic steam sootblowers result in steam waste. Utility Model Content

[0003] The purpose of this application is to provide a swing-type soot blower for use in boiler radiant channels, thereby solving the aforementioned technical problems existing in the prior art.

[0004] This application is implemented as follows: This application provides an oscillating sootblower for use in a boiler radiant channel, comprising a sootblower body, a traveling mechanism, a drive motor, a sootblower barrel, and an oscillating mechanism. The traveling mechanism is movably mounted on the sootblower body in a first direction, the drive motor is mounted on the traveling mechanism, the inlet end of the sootblower barrel is used to connect to a steam pipe, the sootblower barrel includes a steam outlet located on its peripheral sidewall, and at least two steam outlets are radially distributed along the sootblower barrel; the sootblower barrel is mounted on the traveling mechanism via the oscillating mechanism, the sootblower barrel is limited and engaged with the traveling mechanism in the first direction, the output shaft of the drive motor is connected to the oscillating mechanism to drive the sootblower barrel to reciprocate around its axis, and the rotation angle of the sootblower barrel is not greater than 180 degrees.

[0005] The technical solution provided in this application can achieve the following beneficial effects: In this application, a swing mechanism is used to connect the sootblower tube to the traveling mechanism. The traveling mechanism can move relative to the sootblower body in a first direction, thereby adjusting the overall position of the sootblower tube. Furthermore, the drive motor can drive the sootblower tube to rotate through the swing mechanism, thereby adjusting the orientation of the steam outlet on the sootblower tube and changing the blowing direction of the steam outlet. The overall adjustment method is convenient. The rotation of the sootblower tube is also restricted to reciprocating rotation within a certain angle. The sootblower tube repeatedly blows the corresponding area within a certain angle, which can improve the blowing effect. At the same time, aligning the steam outlet with the area to be cleaned can prevent the sootblower tube from blowing into areas that do not need to be cleaned, thereby improving the steam utilization efficiency and reducing steam waste. In addition, at least two steam outlets are distributed radially along the sootblower tube, allowing the sootblower tube to blow both the front and rear water-cooled walls simultaneously, thereby improving the blowing efficiency. Attached Figure Description

[0006] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0007] Figure 1 This is a schematic diagram of the overall structure of the oscillating soot blower provided in some embodiments of this application; Figure 2 This is a schematic diagram illustrating the use of the oscillating soot blower provided in some embodiments of this application; Figure 3 This is a schematic diagram of the overall structure of the swing mechanism provided in some embodiments of this application; Figure 4 This is a schematic diagram of the use of the swing mechanism provided in some embodiments of this application.

[0008] In the diagram: 100-Sootblower body, 200-Walking mechanism, 300-Drive motor, 400-Sootblower barrel, 410-Steam outlet, 420-Sootblower nozzle, 500-Swing mechanism, 510-First connector, 520-Connecting rod, 530-Second connector, 540-Base, 550-First rotating shaft, 600-Steam pipe, 700-Sootblower lifting valve, 810-Front wall water-cooled wall, 820-Rear wall water-cooled wall. Detailed Implementation

[0009] The following description provides many different embodiments or examples for implementing various features of the present invention. The elements and arrangements described in the specific examples below are only for concise expression of the present invention and are merely examples, not intended to limit the present invention.

[0010] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0011] This application provides a swing-type soot blower for use in a boiler radiant channel, which can be referred to... Figure 1 and Figure 2 As shown, the swing-type sootblower includes a sootblower body 100, a walking mechanism 200, a drive motor 300, a sootblower barrel 400, and a swing mechanism 500.

[0012] The traveling mechanism 200 is movably mounted on the sootblower body 100 along the first direction, and the traveling mechanism 200 can move on the sootblower body 100 along the first direction. The sootblower body 100 is the basic structure of the swing sootblower, and all other components are directly or indirectly mounted on the sootblower body 100.

[0013] The drive motor 300 is mounted on the traveling mechanism 200, and the drive motor 300 can move synchronously with the traveling mechanism 200. The inlet end of the sootblower barrel 400 is used to connect to the steam pipe 600, and the steam input direction of the steam pipe 600 can be referenced. Figure 1 and Figure 2 As indicated by the dashed arrow, the sootblower barrel 400 includes a steam outlet 410 located on its peripheral sidewall. Purging steam is supplied to the sootblower barrel 400 via a steam pipe 600 and output through the steam outlet 410. By controlling the position of the sootblower barrel 400, the steam outlet 410 can be aimed at the area to be purged, thus supplying steam into the sootblower barrel 400 to purge the target area. Furthermore, at least two steam outlets 410 are radially distributed along the sootblower barrel 400.

[0014] The sootblower barrel 400 is mounted on the traveling mechanism 200 via a swing mechanism 500. The sootblower barrel 400 is limited and engaged with the traveling mechanism 200 in a first direction, so that the sootblower barrel 400 can move synchronously when the traveling mechanism 200 moves in the first direction. The output shaft of the drive motor 300 is connected to the swing mechanism 500 to drive the sootblower barrel 400 to reciprocate around its axis, and the rotation angle of the sootblower barrel 400 is not greater than 180 degrees.

[0015] The sootblower barrel 400 can move synchronously with the traveling mechanism 200, facilitating adjustment of its position within the radiation channel. For specific usage of the sootblower, please refer to... Figure 1 and Figure 2 As shown, generally only the sootblower barrel 400 is inserted into the radiation channel. The position of the sootblower barrel 400 is adjusted by adjusting the position of the traveling mechanism 200, thereby ensuring that the sootblower barrel 400 can blow soot throughout the entire radiation channel. The moving direction of the traveling mechanism 200, i.e., the first direction, is generally the same as the extension direction of the radiation channel, which facilitates the adjustment of the overall position of the sootblower barrel 400.

[0016] Through the cooperation of the drive motor 300 and the swing mechanism 500, after the drive motor 300 is started, the sootblower barrel 400 can reciprocate around its own axis. (See reference...) Figure 4 As shown, the dashed arrow indicates the rotation direction of the sootblower barrel 400. After the sootblower barrel 400 rotates, the position and orientation of the steam outlet 410 located on its peripheral wall also change, thereby altering the purging range of the steam outlet 410. The overall adjustment method is convenient. Since the sootblower barrel 400 rotates reciprocally, it is restricted to a certain angle. Therefore, the sootblower barrel 400 can purge the corresponding area within a certain angle, increasing the purging time and thus improving the purging effect. This ensures the heat exchange effect of the water-cooled wall and improves boiler efficiency. In actual use, aligning the steam outlet 410 with the area to be purged, i.e., the front water-cooled wall 810 or the rear water-cooled wall 820, restricts the direction of the steam outlet 410 within a certain range, accurately purging the target area and avoiding purging areas that do not need cleaning. This improves steam utilization efficiency, avoids steam waste, reduces steam consumption, and increases project revenue.

[0017] In addition, in the embodiments provided in this application, there are at least two steam outlets 410, and at least two steam outlets 410 are radially distributed along the sootblower tube 400. The sootblower tube 400 is extended into the radiation channel, and its position is adjusted so that both the front water-cooled wall 810 and the rear water-cooled wall 820 correspond to at least one steam outlet 410. The sootblower tube 400 can simultaneously blow through both the front water-cooled wall 810 and the rear water-cooled wall 820, improving blowing efficiency.

[0018] The walking mechanism 200 can be an existing linear drive mechanism, such as a mechanical screw, hydraulic and pneumatic, electromagnetic direct drive, gear rack and pinion synchronous belt, etc. This application does not impose specific restrictions on the specific structure of the walking mechanism 200.

[0019] Swing mechanism 500 can be referenced Figure 3 The swing mechanism 500 includes a first connecting member 510, a connecting rod 520, a second connecting member 530, and a base 540. One end of the first connecting member 510 is connected to the output shaft of the drive motor 300, and the other end is rotatably connected to the connecting rod 520. The end of the connecting rod 520 away from the first connecting member 510 is rotatably connected to the second connecting member 530. The second connecting member 530 is fixedly connected to the sootblower barrel 400. The base 540 is rotatably sleeved on the outside of the sootblower barrel 400 and is fixed to the traveling mechanism 200. The length of the first connecting member 510 is less than the length of the connecting rod 520, and the second connecting member 530 can swing back and forth around the axis of the sootblower barrel 400 under the drive of the drive motor 300.

[0020] One end of the swing mechanism 500 is connected to the walking mechanism 200 via a drive motor 300, and the other end is connected to the walking mechanism 200 via a base 540. After the drive motor 300 is started, the first connecting member 510 rotates around the output shaft, which in turn drives the connecting rod 520 to move back and forth. The connecting rod 520 then drives the second connecting member 530 to swing. Meanwhile, since the base 540 restricts the position of the sootblower barrel 400, the sootblower barrel 400 reciprocates around its axis as the second connecting member 530 swings.

[0021] In the soot blower provided in this application embodiment, the soot blowing speed of the soot blower can be adjusted by adjusting the walking speed of the walking mechanism 200. Figure 2 In the diagram, the red line represents the blowing trajectory of one steam outlet 410 during the forward movement of the sootblower nozzle, the green line represents the blowing trajectory of the other steam outlet 410 during the forward movement of the sootblower nozzle, the blue line represents the blowing trajectory of one steam outlet 410 during the backward movement of the sootblower nozzle, and the purple line represents the blowing trajectory of the other steam outlet 410 during the backward movement of the sootblower nozzle. By controlling the blowing trajectory of the steam outlet 410, the front water-cooled wall 810 and the rear water-cooled wall 820 that need to be blown are covered as much as possible.

[0022] The rotation angle of the sootblower barrel 400 can also be adjusted by adjusting the size of the swing mechanism 500, thereby adjusting the sootblowing angle to match different furnace sizes. This eliminates the need to customize the sootblower according to different sizes, increases the sootblower production speed, and reduces the sootblower procurement cost.

[0023] In some embodiments, multiple connection points can be provided on the connecting rod 520 and the second connecting member 530. By changing the connection position of the connecting rod 520 and the second connecting member 530, the size of the swing mechanism 500 can be adjusted, thereby adjusting the soot blowing angle. In other embodiments, the connecting rod 520 can be made detachable, and multiple connecting rods 520 of different sizes can be configured simultaneously. The connecting rod 520 of the corresponding size can be selected and installed according to the requirements to adjust the soot blowing angle.

[0024] In some preferred embodiments, the first connecting member 510 can be a rod-shaped structure, with one end fixedly connected to the output shaft and the other end rotatably connected to the connecting rod 520. In other preferred embodiments, the first connecting member 510 can also be a block-shaped structure, as can be referred to... Figure 3 and Figure 4 As shown, one side surface of the first connecting member 510 is fixed to the output shaft of the drive motor 300, and the other side surface is rotatably connected to the connecting rod 520 via the first rotating shaft 550, with the axis of the first rotating shaft 550 offset from the axis of the output shaft. Designing the first connecting member 510 as a block structure facilitates force transmission, making it easier for the drive motor 300 to ultimately drive the sootblower barrel 400 to rotate. Furthermore, the block-shaped first connecting member 510 has high structural strength, making it less prone to breakage during use and effectively extending the service life of the sootblower.

[0025] In some preferred embodiments, two bases 540 are provided, located on either side of the second connector 530. Both bases 540 are rotatably fitted around the sootblower barrel 400 and are fixed to the traveling mechanism 200. The two bases 540 improve the constraint on the position of the sootblower barrel 400 and also correct its orientation, preventing installation misalignment. Specifically, the bases 540 are typically detachably fixed to the traveling mechanism 200 using bolts. In some preferred embodiments, a rubber ring can be placed between the base 540 and the sootblower barrel 400 to reduce direct friction. The bases 540 are detachable, allowing for replacement of worn rubber rings and preventing structural damage to the sootblower barrel 400 caused by friction between them.

[0026] In some preferred embodiments, the width of the second connector 530 gradually increases along the direction from the connecting rod 520 to the sootblower barrel 400. This increases the structural strength of the second connector 530, making the connection between the second connector 530 and the sootblower barrel 400 more secure. At the same time, the wider end of the second connector 530 facilitates the passage of the sootblower barrel 400 through the second connector 530.

[0027] For reference Figure 1 As shown, a sootblower nozzle 420 is provided at the end of the sootblower barrel 400 away from the steam pipe 600, and a steam outlet 410 is located on the peripheral sidewall of the sootblower nozzle 420. Multiple sootblower nozzles 420 of different specifications can be provided, with the steam outlet 410 located at the nozzle. The size and / or number of steam outlets 410 of each nozzle 420 may vary. In actual use, the corresponding specification of sootblower nozzle 420 is assembled according to the actual sootblowing requirements.

[0028] The end face of the sootblower nozzle 420 is an arc-shaped structure, and the center of the arc-shaped structure is located on the side of the end face of the sootblower nozzle 420 near the steam outlet 410. That is, the end face of the sootblower nozzle 420 bulges outward. The arc-shaped end face helps to disperse the impact force of the steam, making the impact force distribution more uniform. It can also reduce stress concentration and flow-induced vibration, and improve the structural strength and durability of the sootblower nozzle 420.

[0029] In some embodiments, a sootblower lifting valve 700 is also connected between the inlet end of the sootblower gun barrel 400 and the steam pipe 600. The sootblower lifting valve 700 is used to increase the steam pressure, raising the steam pressure entering the sootblower gun barrel 400 to a suitable purging pressure, ensuring that the steam has sufficient pressure to purge to the water-cooled wall surface.

[0030] The length direction of the sootblower barrel 400 is set parallel to the first direction, which makes it easier to adjust the position of the sootblower barrel 400 in the radiation channel, so that the distance between the steam outlet 410 and the front wall and the rear wall can always be kept stable, thereby stabilizing the sootblowing effect of the sootblower barrel 400.

[0031] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0032] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A swing-type soot blower applied to a boiler radiant channel, characterized in that, It includes a soot blower body (100), a walking mechanism (200), a drive motor (300), a soot blower barrel (400), and a swing mechanism (500). The walking mechanism (200) is movably mounted on the sootblower body (100) along a first direction, the drive motor (300) is mounted on the walking mechanism (200), the inlet end of the sootblower barrel (400) is used to connect to the steam pipe (600), the sootblower barrel (400) includes a steam outlet (410) located on its peripheral sidewall, and at least two of the steam outlets (410) are radially distributed along the sootblower barrel (400); The soot blower barrel (400) is mounted on the walking mechanism (200) via the swing mechanism (500). The soot blower barrel (400) is in a limiting engagement with the walking mechanism (200) in a first direction. The output shaft of the drive motor (300) is connected to the swing mechanism (500) to drive the soot blower barrel (400) to reciprocate around its axis. The rotation angle of the soot blower barrel (400) is not greater than 180 degrees.

2. The swing-type soot blower applied to a boiler radiant channel according to claim 1, characterized in that, The swing mechanism (500) includes a first connector (510), a connecting rod (520), a second connector (530), and a base (540). One end of the first connector (510) is connected to the output shaft of the drive motor (300), and the other end is rotatably connected to the connecting rod (520). The end of the connecting rod (520) away from the first connector (510) is rotatably connected to the second connector (530). The second connector (530) is fixedly connected to the soot blower barrel (400). The base (540) is rotatably sleeved on the outside of the soot blower barrel (400) and is fixed to the walking mechanism (200). The length of the first connector (510) is less than the length of the connecting rod (520). The second connector (530) can swing back and forth around the axis of the soot blower barrel (400) under the drive of the drive motor (300).

3. A swing-type soot blower applied to a boiler radiant channel according to claim 2, characterized in that, The first connector (510) is a block structure. One side surface of the first connector (510) is fixed to the output shaft of the drive motor (300), and the other side surface is rotatably connected to the connecting rod (520) through the first rotating shaft (550). The axis of the first rotating shaft (550) is offset from the axis of the output shaft.

4. A swing-type soot blower applied to a boiler radiant channel according to claim 2, characterized in that, There are two bases (540), and the two bases (540) are located on both sides of the second connector (530).

5. A swing-type soot blower applied to a boiler radiant channel according to claim 2, characterized in that, The base (540) is detachably fixed to the walking mechanism (200) by bolts.

6. A swing-type soot blower applied to a boiler radiant channel according to claim 2, characterized in that, Along the direction from the connecting rod (520) to the soot blower barrel (400), the width of the second connector (530) gradually increases.

7. A swing-type soot blower applied to a boiler radiant channel according to claim 1, characterized in that, The sootblower nozzle (420) is provided at the end of the sootblower barrel (400) away from the steam pipe (600), and the steam outlet (410) is located on the peripheral sidewall of the sootblower nozzle (420).

8. A swing-type soot blower applied to a boiler radiant channel according to claim 7, characterized in that, The end face of the soot blower nozzle (420) is an arc-shaped structure, and the center of the arc-shaped structure is located on the side of the end face of the soot blower nozzle (420) close to the steam outlet (410).

9. A swing-type soot blower applied to a boiler radiant channel according to claim 1, characterized in that, A soot blower lifting valve (700) is also connected between the inlet end of the soot blower barrel (400) and the steam pipe (600), and the soot blower lifting valve (700) is used to increase the steam pressure.

10. A swing-type soot blower applied to a boiler radiant channel according to claim 1, characterized in that, The length direction of the sootblower barrel (400) is parallel to the first direction.

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