A power plant boiler water wall tube group rapid centering installation device

Abstract

The utility model discloses a kind of power plant boiler water-cooled wall pipe group quick centering installation device, it is related to boiler installation technical field, to solve the technical problem of current water-cooled wall pipe inconvenient to find centering installation point during installation and thus inconvenient efficiency installation, including positioning structure, the positioning structure includes connecting cylinder, several switching wheels are evenly installed in the adjusting ring, the inside of the adjusting plate is located on adjusting ring and is equipped with limit piece.The utility model has the advantages that water-cooled wall pipe is fixed by the connecting cylinder of bottom, water-cooled wall pipe is moved by adjusting ring connection top, and the adjusting plate in adjusting ring and other structures are positioned quickly to the water-cooled wall pipe moving, after adjusting plate rotates in place, compensation plate fills the gap between two adjacent adjusting plates, ensure that positioning column connects adjusting ring, so that adjusting ring and connecting cylinder have gap, and the two water-cooled wall pipe spot welding fixed can be realized centering installation.

Description

Technical Field

[0001] This utility model relates to the field of boiler installation technology, and more specifically, to a quick centering and installation device for water-cooled wall tube assemblies in power plant boilers. Background Technology

[0002] Water-cooled wall tube assemblies are the main heat-receiving part of power plant boilers. Plain tube water-cooled wall tube assemblies are composed of a row of seamless steel tubes, with a simple structure. The tightness of their arrangement is measured by the ratio of the tube spacing to the outer diameter of the tube body. Their main function is to absorb the radiant heat of the high-temperature combustion products in the furnace, so that the water or steam inside the tubes is heated and evaporated, converting thermal energy into the internal energy of the working fluid. They play a key role in the energy conversion process of the boiler. At the same time, they are also the basic components in the boiler water circulation loop, in which the working fluid moves upward. Together with downcomers and other components, they form a water circulation system to ensure the normal flow of the working fluid and heat transfer in the boiler.

[0003] In boilers, multiple water-cooled wall tubes are connected in parallel to form water-cooled wall tube assemblies. These assemblies are then connected in series according to the boiler size to accommodate different boiler sizes. Currently, one installation method is hoisting. The tube assemblies to be installed are vertically hoisted, and the pipes between adjacent assemblies are connected by welding. This method makes it difficult to find the alignment point between the pipes of two assemblies. The pipes are easily affected by the machine during hoisting, making it difficult to ensure pipe stability during welding, which can easily lead to welding misalignment. Therefore, we propose a rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the needs of reality, and provide a quick centering and installation device for water-cooled wall tube assemblies in power plant boilers, so as to solve the technical problem that it is not easy to find the centering and installation point during the current installation of water-cooled wall tubes, thus making it inconvenient to install efficiently.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a quick centering and installation device for water-cooled wall tube assemblies in power plant boilers, comprising a positioning structure, wherein the positioning structure includes a connecting cylinder, an adjusting ring is installed on the top of the connecting cylinder, a plurality of transfer wheels are evenly installed inside the adjusting ring, an adjusting plate is installed on the outer wall of the transfer wheels, and a compensation plate is installed at the end of the adjusting plate away from the transfer wheels. The plurality of transfer wheels rotate to cooperate with the adjusting plate and the compensation plate to close and form an annular connecting part, the connecting part being located at the center of the adjusting ring, a bracket is installed at the bottom of the positioning structure, the bottom diameter of the connecting cylinder is the same as the diameter of the connecting part and is in a vertically corresponding state, and a limiting component is installed on the inner side of the adjusting plate on the adjusting ring.

[0006] Preferably, the adapter wheel is equipped with a sprocket one for connecting the chain to drive the adapter wheel to rotate, and the limiting member is connected with a sprocket two for connecting the chain to drive the limiting member to rotate. The sprocket one and sprocket two rotate in opposite directions when the chain is connected to rotate. The adjusting ring is also equipped with a motor for driving the chain to rotate, and the output end of the motor cooperates with the chain through a sprocket.

[0007] Preferably, the adjusting plate is a plate with an overall arc-shaped concave structure. The outer side of the adjusting plate away from the adapter wheel has an arc-shaped groove of one-third circle size. The inner side of the adjusting plate has a groove for installing the limiting member at the position corresponding to the limiting member.

[0008] Preferably, a torsion spring for extending and resetting the compensation plate is installed between the compensation plate and the adjustment plate. When the adjustment plate is closed, the moving end of the limiting member is in contact with the compensation plate, and the arc-shaped notch at the moving end of the compensation plate corresponds to the shape of the fixed end.

[0009] Preferably, the connecting cylinder is a tapered cylindrical structure with an overall diameter that gradually increases from bottom to top. The bottom of the connecting cylinder is threaded to the support. The connecting cylinder is composed of two vertically symmetrical semi-circular arc plates inserted together. A positioning post is installed between the top of the connecting cylinder and the adjusting ring.

[0010] Preferably, the bracket includes edge sealing frames installed on both sides and several extension frames installed in the middle. The edge sealing frames and extension frames are each composed of two symmetrical frame bodies inserted together, and adjacent extension frames are inserted and fixed together.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model, through the design of a positioning structure, connects a fixed water-cooled wall tube via a connecting cylinder at the bottom, and a movable water-cooled wall tube via an adjusting ring at the top. The movable water-cooled wall tube is quickly positioned and centered using adjusting plates and other structures inside the adjusting ring. The rotating of a transfer wheel drives the adjusting plate to rotate inwards. Simultaneously, the synchronous rotation of several transfer wheels causes the adjusting plate to rotate, while the compensating plate is released and rotates. After the adjusting plate reaches its position, the compensating plate fills the gap between adjacent adjusting plates, ultimately forming a complete annular connection, thus fixing the position of the movable water-cooled wall tube. Then, the adjusting ring is lifted upwards, ensuring that the positioning post connects to the adjusting ring while leaving a gap between the adjusting ring and the connecting cylinder. The upper and lower water-cooled wall tubes are then spot-welded to achieve centered installation, solving the technical problem of inefficient installation due to the difficulty in finding the centering point during current water-cooled wall tube installation.

[0013] 2. This utility model also improves the overall length of the adjustment plate by designing an arc-shaped structure. At the same time, an arc-shaped groove is provided at the moving port for fixing adjacent adapter wheels, thereby increasing the overall length of the adjustment plate. This facilitates the installation of small-diameter water-cooled wall tubes. In addition, the compensation plate connected with a torsion spring can compensate for the gap between two adjacent adjustment plates, thereby forming a relatively integral connection part. The arc-shaped structure effectively increases the length of the adjustment plate and realizes the relatively ring structure formed after the compensation plate is installed. This allows for better fit with the water-cooled wall tubes, achieving the purpose of centering and fixing, and facilitating subsequent installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0015] Figure 2 This is a schematic diagram of the positioning structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the adjusting ring structure of this utility model;

[0017] Figure 4 This is a schematic diagram of the adjustment plate connection structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the bracket installation structure of this utility model;

[0019] Figure 6 This is a schematic diagram of the sprocket mounting structure of this utility model.

[0020] The following are the labels in the diagram: 100, bracket; 110, edge banding frame; 120, extension frame; 200, positioning structure; 210, connecting cylinder; 211, positioning post; 220, adjusting ring; 221, adjusting plate; 222, adapter wheel; 223, compensation plate; 224, limiting component; 225, connecting part; 226, arc groove; 230, sprocket one; 231, sprocket two; 232, motor. Detailed Implementation

[0021] like Figures 1 to 6As shown, this utility model relates to a rapid centering and installation device for water-cooled wall tube assemblies in power plant boilers, comprising a positioning structure 200. The positioning structure 200 includes a connecting cylinder 210, an adjusting ring 220 installed on the top of the connecting cylinder 210, a plurality of transition wheels 222 evenly installed inside the adjusting ring 220, an adjusting plate 221 installed on the outer wall of the transition wheels 222, and a compensation plate 223 installed at the end of the adjusting plate 221 away from the transition wheels 222. The plurality of transition wheels 222 rotate in coordination with the adjusting plate 221 and the compensation plate 223 to close and form an annular connecting part 225. The connecting part 225 is located at the center of the adjusting ring 220. A bracket 100 is installed at the bottom of the positioning structure 200. The bottom diameter of the connecting cylinder 210 is the same as the diameter of the connecting part 225 and is in a vertically corresponding state. A limiting member 224 is installed on the inner side of the adjusting plate 221 on the adjusting ring 220.

[0022] This utility model designs a positioning structure 200, which connects a fixed water-cooled wall tube to a connecting cylinder 210 at the bottom and a movable water-cooled wall tube to a moving water-cooled wall tube at the top via an adjusting ring 220. The moving water-cooled wall tube is quickly positioned and centered using structures such as adjusting plates 221 inside the adjusting ring 220. The rotating adapter wheels 222 drive the adjusting plates 221 to rotate inwards. Simultaneously, the rotating adapter wheels 222 and adjusting plates 221 rotate, causing the compensating plate 223 to rotate under pressure. After the adjusting plates 221 are in position, the compensating plate 223 fills the gap between adjacent adjusting plates 221, ultimately forming a complete annular connecting part 225, thus fixing the position of the moving water-cooled wall tube. Then, the adjusting ring 220 is lifted upwards, ensuring that the positioning post 211 connects to the adjusting ring 220 while leaving a gap between the adjusting ring 220 and the connecting cylinder 210. The upper and lower water-cooled wall tubes are then spot-welded to achieve centered installation, solving the technical problem of inefficient installation of water-cooled wall tubes due to the difficulty in finding the centering point.

[0023] This utility model also improves the overall length of the adjusting plate 221 by designing an arc-shaped structure. At the same time, an arc-shaped groove 226 is provided at the moving port for fixing the adjacent adapter wheel 222. This increases the overall length of the adjusting plate 221, which facilitates the installation of small-diameter water-cooled wall tubes. In addition, the compensation plate 223 connected with a torsion spring can compensate for the gap between two adjacent adjusting plates 221, thereby forming a relatively integral connecting part 225. The arc-shaped structure effectively increases the length of the adjusting plate 221 and realizes the relatively ring structure formed after the compensation plate 223 is installed. This allows for better fit with the water-cooled wall tube, achieving the purpose of centering and fixing, and facilitating subsequent installation.

[0024] Specifically, the adapter wheel 222 is equipped with a sprocket 230 for connecting the chain and driving the adapter wheel 222 to rotate. The limiting member 224 is connected with a sprocket 231 for connecting the chain and driving the limiting member 224 to rotate. The sprocket 230 and sprocket 231 rotate in opposite directions when the chain is connected to rotate. The adjusting ring 220 is also equipped with a motor 232 for driving the chain to rotate. The output end of the motor 232 cooperates with the chain through a sprocket. The sprocket installed on the adjusting ring 220 outputs power through the motor 232. The rotation of the output end drives the chain to move, and the connected chain drives the first sprocket 230 to rotate while simultaneously driving the second sprocket 231 to rotate in the opposite direction. This makes the first sprocket 230 and the second sprocket 231 rotate in opposite directions. With the cooperation of the connecting wheel 222 and the limiting member 224 respectively, when the connecting wheel 222 rotates and extends, the limiting member 224 moves outward to release the compensation plate 223. This allows the compensation plate 223 to be positioned in the retracted state, reducing the possibility of damage caused by the water-cooled wall tube contacting the adjusting ring 220 when it enters the position.

[0025] Furthermore, the adjusting plate 221 is an integrally arc-shaped concave plate. The outer side of the adjusting plate 221 away from the adapter wheel 222 has an arc-shaped groove 226 of one-third circle size. The inner side of the adjusting plate 221 has a groove for installing the limiting member 224 at a position corresponding to the limiting member 224. The arc-shaped adjusting plate 221 can be evenly arranged around the adjusting ring 220. At the same time, the arc-shaped groove 226 is opened at its moving end to facilitate the installation of the adapter wheel 222 connected to the adjacent adjusting plate 221, thereby increasing the moving radius of the adjusting plate 221. This can effectively limit the position of the moving water-cooled wall tube and improve the centering efficiency of the water-cooled wall tube.

[0026] It is worth noting that a torsion spring for the compensation plate 223 to extend and reset is installed between the compensation plate 223 and the adjusting plate 221. When the adjusting plate 221 is closed, the moving end of the limiting member 224 is in contact with the compensation plate 223. The arc-shaped notch at the port of the moving end of the compensation plate 223 corresponds to the shape of the port of its fixed end. The installation of the torsion spring ensures that the compensation plate 223 can extend when the limiting member 224 does not inhibit it. With the help of the adjusting plate 221, the gap between adjacent adjusting plates 221 can be compensated, improving the integrity of the connection part 225 and facilitating the stability and accuracy of the centering installation of the water-cooled wall tube.

[0027] It is worth mentioning that the connecting cylinder 210 is a tapered cylindrical structure with its overall diameter gradually increasing from bottom to top. The bottom of the connecting cylinder 210 is threadedly connected to the bracket 100. The connecting cylinder 210 is composed of two vertically symmetrical semi-circular arc plates inserted together. A positioning post 211 is installed between the top of the connecting cylinder 210 and the adjusting ring 220. The tapered cylindrical structure and symmetrical structure not only facilitate the insertion of the movable water-cooled wall tubes, but also facilitate the timely disassembly of the bracket 100 and the connecting cylinder 210 after the two water-cooled wall tubes have been aligned and installed. Furthermore, the positioning post 211 allows the adjusting ring 220 to be lifted a certain distance, and the movable water-cooled wall tube and the fixed water-cooled wall tube can be simply spot-welded through the gap between the adjusting ring 220 and the connecting cylinder 210 before disassembly. This facilitates the subsequent installation and fixing of other water-cooled wall tubes and improves the alignment and installation efficiency.

[0028] It is worth noting that the bracket 100 includes edge sealing frames 110 installed on both sides and several extension frames 120 installed in the middle. Each edge sealing frame 110 and extension frame 120 is composed of two symmetrical frame bodies inserted together, and adjacent extension frames 120 are fixed together. The bracket 100 adopts a splicing installation method, which facilitates installation and disassembly from the water-cooled wall tubes and facilitates the subsequent installation of other water-cooled wall tubes. At the same time, the extension frame 120 can realize the installation and alignment operation of multiple sets of water-cooled wall tubes, thereby increasing the installation range of the equipment.

[0029] Working Principle: This embodiment provides a quick alignment and installation device for water-cooled wall tube assemblies in power plant boilers. In use, the number of extension brackets 120 on the support 100 is selected based on the number of water-cooled wall tubes on the assembly. The edge-sealing bracket 110 and extension bracket 120 are then connected and fixed onto the water-cooled wall tubes. Next, the connecting cylinder 210 is attached to the water-cooled wall tube above the support 100. The connecting cylinder 210 is then rotated to connect its bottom to the support 100, ensuring that the port of the water-cooled wall tube fixed at the bottom is higher than the top of the connecting cylinder 210. Finally, the adjusting ring 220 is installed and fixed by inserting it through the positioning post 211. It is not necessary to insert it to the bottom; a gap is left between the adjusting ring 220 and the connecting cylinder 210 to allow the movable water-cooled wall tube to be aligned. The water-cooled wall tube is inserted into the adjusting ring 220. The output end of the motor 232 rotates, driving the chain to move. This causes the adapter wheel 222 to rotate, driving the adjusting plate 221 to rotate. At the same time, the limiting member 224 moves backward to release the compensation plate 223. After the compensation plate 223 is ejected by the torsion spring, the adjusting plate 221 finally rotates into place. Several compensation plates 223 cooperate with the adjusting plate 221 to form an annular connecting part 225. At this time, the moving water-cooled wall tube is located in the connecting part 225, corresponding to the fixed water-cooled wall tube at the bottom. Then, the height of the moving water-cooled wall tube is adjusted to fit with the fixed water-cooled wall tube and spot welded to fix it. Then, the bracket 100 and the connecting cylinder 210 are removed. The adjusting ring 220 is moved upward to the position of the next water-cooled wall tube that needs to be aligned and installed, or it can be removed.

[0030] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers, characterized in that, The system includes a positioning structure (200), which includes a connecting cylinder (210). An adjusting ring (220) is installed on the top of the connecting cylinder (210). Several transition wheels (222) are evenly installed inside the adjusting ring (220). An adjusting plate (221) is installed on the outer wall of the transition wheel (222). A compensation plate (223) is installed at the end of the adjusting plate (221) away from the transition wheel (222). The several transition wheels (222) rotate to cooperate with the adjusting plate (221) and the compensation plate (223) to close and form an annular connecting part (225). The connecting part (225) is located at the center of the adjusting ring (220). A bracket (100) is installed at the bottom of the positioning structure (200). The bottom diameter of the connecting cylinder (210) is the same as the diameter of the connecting part (225) and they are in an upper and lower corresponding state. A limit member (224) is installed on the inner side of the adjusting plate (221) on the adjusting ring (220).

2. The rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers according to claim 1, characterized in that, The adapter wheel (222) is equipped with a sprocket (230) for connecting the chain to drive the adapter wheel (222) to rotate. The limiting member (224) is connected with a sprocket (231) for connecting the chain to drive the limiting member (224) to rotate. The sprocket (230) and sprocket (231) rotate in opposite directions when the chain is connected to rotate. The adjusting ring (220) is also equipped with a motor (232) for driving the chain to rotate. The output end of the motor (232) is connected to the chain through the sprocket.

3. The rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers according to claim 1, characterized in that, The adjusting plate (221) is a plate with an overall arc-shaped concave structure. The outer side of the adjusting plate (221) away from the adapter wheel (222) has an arc-shaped groove (226) with a size of one-third circle. The inner side of the adjusting plate (221) has a groove for installing the limiting member (224) at the corresponding position.

4. The rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers according to claim 3, characterized in that, A torsion spring for resetting the extension of the compensation plate (223) is installed between the compensation plate (223) and the adjustment plate (221). When the adjustment plate (221) is closed, the moving end of the limiting member (224) is in contact with the compensation plate (223). The arc-shaped notch at the port of the moving end of the compensation plate (223) corresponds to the shape of the port of its fixed end.

5. The rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers according to claim 1, characterized in that, The connecting cylinder (210) is a conical cylindrical structure with an overall diameter that gradually increases from bottom to top. The bottom of the connecting cylinder (210) is threadedly connected to the bracket (100). The connecting cylinder (210) is composed of two vertically symmetrical semi-circular arc plates inserted together. A positioning post (211) is installed between the top of the connecting cylinder (210) and the adjusting ring (220).

6. A rapid alignment and installation device for water-cooled wall tube assemblies in power plant boilers according to claim 5, characterized in that, The bracket (100) includes edge sealing frames (110) installed on both sides and several extension frames (120) installed in the middle. The edge sealing frames (110) and extension frames (120) are each composed of two symmetrical frame bodies inserted together, and adjacent extension frames (120) are inserted and fixed together.

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