A boiler burner duct installation and positioning device

Abstract

This utility model discloses a boiler burner duct installation and positioning device, which includes an annular guide rail. A slider is provided on the inner ring of the guide rail, moving circumferentially. An adjusting block is connected to the slider by bolts. The inner surface of the adjusting block is arc-shaped, and the center line of the arc surface of the adjusting block is collinear with the center line of the guide rail. Advantages: Compared with existing manual installation methods relying on calipers and other tools, which involve repeated adjustments, this utility model allows for precise positioning of the duct with only one person operating the adjusting block. Even in confined spaces, the positioning task can be completed quickly and efficiently, saving time and effort.

Description

Technical Field

[0001] This utility model relates to the field of power plant boiler burner maintenance technology, and in particular to a boiler burner duct installation and positioning device. Background Technology

[0002] To meet the demands of a high-quality electricity market, coal-fired power plants must ensure the long-term safe and stable operation of their units. Therefore, the quality of the boiler burners is crucial. However, burners require very infrequent maintenance, necessitating controllable quality for each maintenance. Strict control over the maintenance and installation schedule, quality, and installation precision is essential to guarantee long-term stable operation.

[0003] If the boiler burner shell and air duct are not installed correctly, the air duct axis will be offset, which will lead to incomplete combustion of the air-coal mixture, imbalance of the air-coal ratio and deviation of the burner angle. This will cause a large amount of coking at the burner nozzle, resulting in blockage and unstable boiler combustion, thus posing a safety hazard.

[0004] In the past, the installation and fixing of the air duct inside the burner casing relied on the installer's experience and some auxiliary measuring tools for positioning and fixing, such as calipers and standard blocks. However, human error is significant, the tools are simple but lack precision, and the efficiency is low. Furthermore, the limited space inside the burner casing makes calipers difficult to use and adjust. For these reasons, improper installation on the first attempt leads to repeated adjustments, which is time-consuming, labor-intensive, inefficient, and of questionable quality. Utility Model Content

[0005] The purpose of this utility model is to provide a boiler burner duct installation and positioning device that helps ensure efficient and reliable burner duct installation.

[0006] This utility model is implemented by the following technical solution: a boiler burner duct installation and positioning device, which includes an annular guide rail, a slider that moves circumferentially along the inner ring of the guide rail, an adjusting block that is connected to the slider by bolts, the inner surface of the adjusting block being an arc surface, and the center line of the arc surface of the adjusting block being collinear with the center line of the guide rail.

[0007] Furthermore, the guide rail includes two annular components of the same size, and annular grooves are coaxially formed on the end faces of the two annular components. The inner sidewall edge of the annular groove adjacent to the inner ring of the annular component is lower than the outer sidewall edge; the outer sidewall edges of the two annular components are fitted and fixed together.

[0008] Furthermore, the slider has an arc-shaped "I"-shaped structure, with one of the horizontal portions of the slider placed within the two annular grooves, and the vertical portion of the slider placed between the inner sidewall edges of the two annular grooves; the center line of the arc surface of the other horizontal portion of the slider is collinear with the center line of the annular component.

[0009] Furthermore, the outer surface of the adjusting block is fitted with the arc surface of the slider, and a through groove is provided on the inner surface of the adjusting block.

[0010] Furthermore, the thickness H of the adjusting block is 30 mm to 100 mm.

[0011] The advantages of this utility model are: compared with the existing manual installation that relies on tools such as calipers and repeated adjustments, when using this utility model to fine-tune and position the air duct, only one person needs to operate the adjustment block to achieve accurate positioning. Even in a confined space, the positioning task can be completed quickly and efficiently, saving time and effort. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments 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.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] Figure 2 for Figure 1 AA sectional view.

[0015] Figure 3 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 4 This is a schematic diagram of the usage state of this utility model.

[0017] Figure 5 for Figure 4 The left view.

[0018] The components in the attached diagram are labeled as follows: guide rail 1, annular part 1.1, annular groove 1.11, inner wall edge 1.111, outer wall edge 1.112, slider 2, transverse part 2.1, longitudinal part 2.2, adjusting block 3, through groove 3.1, burner housing 4, air duct 5, sling 6. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] like Figures 1 to 3 As shown, this embodiment provides a boiler burner duct installation and positioning device, which includes an annular guide rail 1. The guide rail 1 includes two annular parts 1.1 of the same size. Annular grooves 1.11 are coaxially formed on the end faces of the two annular parts 1.1. The inner sidewall edge 1.111 of the annular groove 1.11 adjacent to the inner ring of the annular part 1.1 is lower than the outer sidewall edge 1.112. The outer sidewall edges 1.112 of the two annular parts 1.1 are fitted and fixed together.

[0022] A slider 2 is provided on the inner ring of the guide rail 1, moving circumferentially. The slider 2 has an arc-shaped "I"-shaped structure. One of the transverse portions 2.1 of the slider 2 is placed in the two annular grooves 1.11, and the longitudinal portion 2.2 of the slider 2 is placed between the inner sidewall edges 1.111 of the two annular grooves 1.11. The center line of the arc surface of the other transverse portion 2.1 of the slider 2 is collinear with the center line of the annular component 1.1. The slider 2 can move in a circle along the annular groove 1.11 of the guide rail 1.

[0023] The slider 2 is connected to the adjusting block 3 by bolts. The inner side of the adjusting block 3 has a through groove 3.1 to accommodate the bolt, which facilitates the connection between the bolt and the slider 2 and also facilitates disassembly and assembly. The thickness H of the adjusting block 3 is 30 mm, 40 mm or 60 mm, and the appropriate thickness of the adjusting block 3 is selected according to the diameter of the air duct 5. The outer side of the adjusting block 3 fits against the arc surface of the slider 2, and the inner side of the adjusting block 3 is an arc surface. The center line of the arc surface of the adjusting block 3 is collinear with the center line of the guide rail 1 to ensure installation accuracy. The slider 2 is manually operated to drive the adjusting block 3 to move in a circular motion along the guide rail 1.

[0024] Installation and usage process: as follows Figure 4 and Figure 5 As shown, firstly, a set of positioning devices is installed at both ends inside the burner housing 4. The outer ring of the guide rail 1 is tightly fitted with the inner wall of the burner housing 4, and it is necessary to ensure that the guide rail 1 and the burner housing 4 are coaxial. Then, the air duct 5 is inserted into the burner housing 4. Using the lifting straps 6 and chains, the air duct 5 is lifted to the predetermined position by the lifting equipment. Then, the slider 2 and the adjusting block 3 are manually held and rotated around the guide rail 1. During the rotation, the position of the air duct 5 is finely adjusted until the inner surface of the adjusting block 3 is in contact with the outer wall of the air duct 5 and can rotate a full circle around the circumference, ensuring that the air duct 5 and the burner housing 4 are coaxial and accurately positioned. The air duct 5 is then welded and fixed to the burner housing 4 using connectors. Finally, the burner is installed on the furnace body for use.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A boiler burner windbox mounting positioning device, characterized by, It includes an annular guide rail, and a slider is provided on the inner ring of the guide rail that moves circumferentially. The slider is connected to an adjusting block by bolts. The inner surface of the adjusting block is an arc surface, and the center line of the arc surface of the adjusting block is collinear with the center line of the guide rail.

2. A boiler burner windbox mounting positioning device according to claim 1, wherein, The guide rail includes two ring-shaped parts of the same size. An annular groove is coaxially formed on the end face of the two ring-shaped parts. The inner sidewall edge of the annular groove adjacent to the inner ring of the ring-shaped part is lower than the outer sidewall edge. The outer wall edges of the two annular components are fitted and fixed together.

3. A boiler burner windbox mounting positioning device according to claim 2, wherein, The slider has an arc-shaped "I"-shaped structure, with one of its horizontal portions placed inside the two annular grooves and the vertical portion placed between the inner sidewall edges of the two annular grooves. The center line of the arc surface of another lateral portion of the slider is collinear with the center line of the annular component.

4. A boiler burner windbox mounting positioning apparatus as defined in claim 3, wherein, The outer surface of the adjusting block is in contact with the arc surface of the slider, and a through groove is provided on the inner surface of the adjusting block.

5. A boiler burner windbox mounting positioning apparatus as defined in claim 4, wherein, The thickness H of the adjusting block is 30 mm to 100 mm.

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