SCR sootblowing lance device

Abstract

The utility model relates to the technical field of soot blowing nozzle, a SCR soot blowing nozzle device, including main pipe, the fixed mounting of connecting pipe is installed on the main pipe, the fixed mounting of branch pipe is installed on the connecting pipe, the fixed mounting of spray head is installed on the branch pipe, still include: the moving assembly of making branch pipe move before and after, the lower part mounting of main pipe has the fixed frame, the top fixed mounting of fixed frame has the slide rod, the moving assembly installs on the slide rod, the cleaning assembly of cleaning the dust on the slide rod, install on moving assembly, still install transmission assembly that transmission cleaning assembly on moving assembly, the utility model discloses the rotation of the connecting sleeve and the brush of cleaning assembly is driven by the airflow impact fan blade spouted by the air outlet pipe, realizes the automatic cleaning to the slide rod, does not need the additional complex power source, both reduced manufacturing cost and maintenance difficulty, and can remove the dust and impurity on the slide rod in time, avoid the influence mobile assembly and the movement of branch pipe, guarantee the stable operation of device.

Description

Technical Field

[0001] This utility model relates to the field of soot blowing nozzle technology, specifically to an SCR soot blowing nozzle device. Background Technology

[0002] The process of removing nitrogen oxides from combustion flue gas is of great importance in preventing environmental pollution. As the core material of SCR denitrification technology, the catalyst becomes the direct factor restricting the catalytic reaction. However, when flue gas containing high concentrations and high viscosity dust passes through the catalyst, it is very easy to agglomerate on its surface, forming bridges and blockages, which leads to catalyst poisoning and greatly reduces denitrification efficiency. In order to prevent ash accumulation on the catalyst layer and improve denitrification efficiency, a soot blowing device needs to be installed above each catalyst layer.

[0003] During operation, dust and other impurities easily accumulate on the slide rod. Traditional devices lack an effective cleaning mechanism. As the dust accumulates, the friction between the slide rod and the moving components increases further, which may even cause the moving components to jam and become unable to move normally, seriously affecting the reliability and stability of the device. In order to solve the problem of dust accumulation on the slide rod, traditional devices usually require regular manual cleaning and maintenance. This not only increases the workload and cost of maintenance, but may also cause device failure due to untimely or incomplete cleaning, affecting the normal operation of the unit. Utility Model Content

[0004] The purpose of this invention is to provide an SCR soot blowing nozzle device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an SCR soot blowing nozzle device, comprising a main pipe, a connecting pipe fixedly installed on the main pipe, a branch pipe fixedly installed on the connecting pipe, and a nozzle fixedly installed on the branch pipe, and further comprising: A movable component that moves the branch pipe back and forth, wherein a fixed frame is installed at the lower part of the main pipe, a slide rod is fixedly installed at the top of the fixed frame, and the movable component is installed on the slide rod; A cleaning component that removes dust from the slide bar is installed on the movable component, and a transmission component that drives the cleaning component is also installed on the movable component.

[0006] Preferably, the branch pipes are provided in at least three groups and are evenly installed on the main pipe.

[0007] Preferably, the movable component includes a mounting bracket fixedly mounted on the branch pipe, on which rollers are rotatably mounted, and the rollers roll on a slide bar.

[0008] Preferably, the cleaning component includes a fixed base fixedly mounted on a mounting bracket, a connecting sleeve rotatably mounted on the fixed base, and brush bristles fixedly mounted on the inner ring of the connecting sleeve.

[0009] Preferably, the transmission assembly includes an air outlet pipe fixedly installed on the branch pipe, and a fan blade is fixedly installed on the outer ring of the connecting sleeve.

[0010] Preferably, a number of reinforcing rods are fixedly installed on the fixing frame.

[0011] Preferably, both the connecting sleeve and the fixing seat have through grooves inside and do not contact the branch pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention utilizes the airflow ejected from the exhaust pipe to impact the fan blades, thereby rotating the connecting sleeve and brush bristles of the cleaning component. This achieves automatic cleaning of the slide rod without the need for an additional complex power source, reducing manufacturing costs and maintenance difficulty. It also promptly removes dust and impurities from the slide rod, preventing them from affecting the movement of the moving components and branch pipes, and ensuring stable operation of the device. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the connection structure between the main pipe and the branch pipe of this utility model; Figure 3 This is a schematic diagram of the structure of the mobile component of this utility model; Figure 4 This is a schematic diagram of the connecting sleeve structure of this utility model; Figure 5 This is a schematic diagram of the cleaning component structure of this utility model.

[0014] In the diagram: 1. Main pipe; 2. Connecting pipe; 3. Branch pipe; 4. Nozzle; 5. Moving component; 51. Mounting bracket; 52. Roller; 6. Fixing bracket; 7. Slide bar; 8. Cleaning component; 81. Fixing base; 82. Connecting sleeve; 83. Brush bristles; 9. Transmission component; 91. Air outlet pipe; 92. Fan blade; 10. Reinforcing rod. Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] Please see Figure 1-5As shown, an SCR soot blowing nozzle device includes a main pipe 1, a connecting pipe 2 fixedly installed on the main pipe 1, a steam soot blower connected to the connecting pipe 2, a branch pipe 3 fixedly installed on the connecting pipe 2, and a nozzle 4 fixedly installed on the branch pipe 3. Steam is transported to the inside of the branch pipe 3 through the main pipe 1 and the connecting pipe 2, and then sprayed out through the nozzle 4 to perform soot blowing treatment on the catalyst of the coal-fired unit. It also includes a moving component 5 for moving the branch pipe 3 back and forth. A fixed frame 6 is installed at the lower part of the main pipe 1, and a slide rod 7 is fixedly installed at the top of the fixed frame 6. The moving component 5 is installed on the slide rod 7. The moving component 5 moves the branch pipe 3 and the main pipe 1 back and forth on the slide rod 7 to adjust the soot blowing position. A cleaning component 8 for cleaning the dust off the slide rod 7 is installed on the moving component 5. The moving component 5 is also equipped with a transmission component 9 for driving the cleaning component 8. The transmission component 9 drives the cleaning component 8 to rotate, cleaning the dust and other impurities attached to the slide rod 7 and preventing the dust on the slide rod 7 from affecting the movement of the moving component 5.

[0017] It should be noted that: the connecting pipe 2 is connected to an external steam soot blower. Steam enters the main pipe 1 through it, then flows to the branch pipe 3, and finally sprays out from the nozzle 4 to blow soot from the catalyst of the coal-fired unit. The cleaning component 8 is installed on the moving component 5, and the transmission component 9 is also located on the moving component 5 and can drive the cleaning component 8 to rotate. It is used to clean the dust and impurities on the slide bar 7 and ensure the normal movement of the moving component 5.

[0018] The branch pipes 3 are arranged in at least three sets and evenly distributed on the main pipe 1. The moving component 5 includes a mounting frame 51 fixedly mounted on the branch pipes 3. Rollers 52 are rotatably mounted on the mounting frame 51 and roll on the slide bar 7. The branch pipes 3 are arranged in at least three sets and evenly distributed on the main pipe 1. This layout can effectively increase the soot blowing range and improve the soot removal efficiency. The mounting frame 51 of the moving component 5 is fixedly mounted on the branch pipes 3, so that the position of the mounting frame 51 can be determined. The rollers 52 are rotatably mounted on the mounting frame 51. When the device needs to move, the rollers 52 roll on the pre-set slide bar 7. The rolling friction force drives the entire device to move along the direction of the slide bar 7. The rolling friction force is smaller, so the device experiences less resistance during movement, making the movement smoother, reducing shaking and swaying during movement, and improving the accuracy and quality of work.

[0019] The cleaning component 8 includes a fixed base 81 fixedly mounted on the mounting bracket 51, a connecting sleeve 82 rotatably mounted on the fixed base 81, and brush bristles 83 fixedly mounted on the inner ring of the connecting sleeve 82; both the connecting sleeve 82 and the fixed base 81 have through grooves inside and do not contact the branch pipe 3; the transmission component 9 includes an air outlet pipe 91 fixedly mounted on the branch pipe 3, and a fan blade 92 fixedly mounted on the outer ring of the connecting sleeve 82; the air outlet pipe 91 of the transmission component 9 is fixedly mounted on the branch pipe 3, and when airflow is ejected from the air outlet pipe 91, due to the fixed outer ring of the connecting sleeve 82... The fan blade 92 is fixedly installed. When the high-speed airflow impacts the fan blade 92, according to the principle of force interaction, the fan blade 92 will be subjected to a force, which will drive the connecting sleeve 82 to rotate on the fixed seat 81. The rotation of the connecting sleeve 82 will cause the bristles 83 on its inner ring to rotate as well, thereby achieving the cleaning treatment of the outer side of the slide rod 7. The airflow ejected from the air outlet 91 impacts the fan blade 92 to drive the connecting sleeve 82 and the bristles 83 to rotate. No additional complex power source is required, which reduces manufacturing costs and maintenance difficulty, while improving the reliability and stability of the device.

[0020] Several sets of reinforcing rods 10 are fixedly installed on the fixed frame 6 to improve the stability and firmness of the fixed frame 6 during operation.

[0021] Working principle: This SCR soot blowing nozzle device uses the main pipe 1 as the main conveying channel. A steam soot blower is connected to the connecting pipe 2. Steam enters the main pipe 1 through the connecting pipe 2 and is then distributed into at least three sets of evenly distributed branch pipes 3 fixedly installed on the main pipe 1. Each set of branch pipes 3 is equipped with nozzles 4. Steam is ejected through the nozzles 4 at a certain pressure and direction to perform soot blowing on the catalytic converter of the coal-fired unit. When it is necessary to adjust the soot blowing position, the main pipe 1 is pushed by an external transmission device. The main pipe 1 pushes the roller 52 to roll on the slide bar 7, utilizing the friction of the roller 52... The friction force drives the entire device to move back and forth along the slide rod 7. While the branch pipe 3 is blowing away soot, when the airflow is ejected from the air outlet pipe 91, the fan blade 92 is fixedly installed on the outer ring of the connecting sleeve 82. The high-speed airflow impacts the fan blade 92. According to the principle of interaction of forces, the fan blade 92 will be subjected to a force, which will drive the connecting sleeve 82 to rotate on the fixed seat 81. The rotation of the connecting sleeve 82 will cause the bristles 83 on its inner ring to rotate as well, thereby achieving the cleaning treatment of the outer side of the slide rod 7 and preventing the dust on the slide rod 7 from affecting the movement of the moving component 5 and the branch pipe 3.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any indirect modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An SCR soot blowing nozzle device, comprising a main pipe (1), a connecting pipe (2) fixedly installed on the main pipe (1), a branch pipe (3) fixedly installed on the connecting pipe (2), and a nozzle (4) fixedly installed on the branch pipe (3), characterized in that, Also includes: The moving component (5) moves the branch pipe (3) back and forth. A fixed frame (6) is installed at the lower part of the main pipe (1). A slide rod (7) is fixedly installed on the top of the fixed frame (6). The moving component (5) is installed on the slide rod (7). The cleaning component (8) that cleans the dust off the slide bar (7) is installed on the moving component (5), and the moving component (5) is also equipped with the transmission component (9) of the transmission cleaning component (8).

2. The SCR soot blowing nozzle device according to claim 1, characterized in that: The branch pipe (3) is provided in no fewer than three sets and is evenly installed on the main pipe (1).

3. The SCR soot blowing nozzle device according to claim 1, characterized in that: The movable component (5) includes a mounting bracket (51) fixedly mounted on the branch pipe (3), on which a roller (52) is rotatably mounted, and the roller (52) rolls on the slide bar (7).

4. The SCR soot blowing nozzle device according to claim 3, characterized in that: The cleaning component (8) includes a fixed base (81) fixedly mounted on a mounting bracket (51), a connecting sleeve (82) rotatably mounted on the fixed base (81), and bristles (83) fixedly mounted on the inner ring of the connecting sleeve (82).

5. The SCR soot blowing nozzle device according to claim 4, characterized in that: The transmission assembly (9) includes an air outlet pipe (91) fixedly installed on the branch pipe (3), and a fan blade (92) is fixedly installed on the outer ring of the connecting sleeve (82).

6. The SCR soot blowing nozzle device according to claim 1, characterized in that: Several sets of reinforcing rods (10) are fixedly installed on the fixing frame (6).

7. The SCR soot blowing nozzle device according to claim 4, characterized in that: Both the connecting sleeve (82) and the fixing seat (81) have through grooves inside and do not contact the branch pipe (3).

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