Boiler heating surface tube bundle anti-abrasion tile mounting method utilizing bidirectional compression

Abstract

The invention discloses a method for installing a boiler heating surface tube bundle anti-abrasion tile through two-way pressing. Due to the fact that the pitch of the tube rows is small, many inconvenience influences are brought to installation of anti-abrasion tiles, due to the fact that the pitch of the tube rows is too small, workers cannot install the anti-abrasion tiles on the fourth-layer tube bundle and the fifth-layer tube bundle, only the mode of cutting off positioning blocks and enlarging the pitch of the tube rows through chain blocks can be adopted, and therefore the workload is greatly increased. The method comprises the following steps that firstly, an anti-abrasion tile and two steel bars are welded, after welding, the steel bars are held by hands, the anti-abrasion tile is placed on a fifth tube bundle, and a rotating clamping rod at the lower end is located between the fifth tube bundle and a fourth tube bundle after rotating; after rotation is completed, the rotating clamping rod at the lower end is pressed on the anti-abrasion tile of the fifth tube bundle, the threaded sleeve continues to be rotated, the position of the rotating clamping rod at the upper end is adjusted so that the rotating clamping rod can abut against the lower portion of the first tube bundle, in this way, the anti-abrasion tile on the fifth tube bundle can be compacted, and then a steel bar and the anti-abrasion tile on the first tube bundle are welded. The device is used for assisting the installation of the anti-abrasion tile of the boiler heating surface tube bundle.

Description

Technical Field

[0001] This invention relates to a method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping. Background Technology

[0002] Currently, due to changes in the quality of coal fed into power plants, a large amount of ash adheres to the heating surface tubes, affecting heat absorption, especially at the tail end of the heating surface. The tail end heating surfaces mostly use steam purging technology, which causes some damage to the tubes. A common method to avoid steam purging is to install wear-resistant tiles. For transversely arranged tubes such as economizers and low-temperature superheaters, wear-resistant tiles are installed on the first, second, and third layers of tubes at the factory. However, the small tube pitch makes the installation of these tiles difficult. Because the pitch is too small, personnel cannot install wear-resistant tiles on the fourth and fifth layers; instead, they have to cut the positioning blocks and use a chain hoist to increase the tube pitch, significantly increasing the workload. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems and provide a method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping.

[0004] The above objectives are achieved through the following technical solutions: A method for installing anti-wear tiles on boiler heating surface tube banks using bidirectional clamping, the method comprising the following steps: (1) First, weld the anti-wear tile to two steel bars. After welding, hold the steel bars and place the anti-wear tile on the fifth tube bundle. Then hold one of the rotating rods. The rotating rod is rotatably connected to the support frame. Rotate the rotating rod to make the rotating clamp rotate. At this time, the device can be placed between two adjacent tube bundles. (2) After insertion, position the lower rotating clamp rod between the fifth tube bundle and the fourth tube bundle, then rotate the screw sleeve to adjust the position of the upper rotating clamp rod, and after adjustment, position it between the first tube bundle and the second tube bundle. (3) After the adjustment is completed, rotate the rotating rod to make the upper and lower rotating clamps rotate. After the upper rotating clamp rotates, it is between the first tube bundle and the second tube bundle, and after the lower rotating clamp rotates, it is between the fifth tube bundle and the fourth tube bundle. (4) After the rotation is completed, press the lower rotating clamp rod onto the anti-wear tile of the fifth tube bundle, continue to rotate the screw sleeve, adjust the position of the upper rotating clamp rod so that it is pressed against the bottom of the first tube bundle, so that the anti-wear tile on the fifth tube bundle can be compacted, and then weld the steel bar to the anti-wear tile on the first tube bundle. (5) After welding is completed, rotate the screw sleeve so that its limiting clamping plate moves the upper rotating clamping rod downward, so that it is released from the pressed state. Then rotate the rotating rod so that its rotating clamping rod rotates between the two adjacent tube bundles and remove the device.

[0005] The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping involves a support frame rotatably connected to two rotating rods. The upper and lower ends of the two rotating rods are respectively connected to rotating clamping rods for clamping the anti-wear tiles. The upper part of the fixing screw of the support frame is connected to an adjusting seat for adjusting the position of the upper rotating clamping rod.

[0006] The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional compression includes a support frame comprising two supports arranged vertically, which are fixedly connected by a fixing screw.

[0007] The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping includes a rotating clamp rod comprising a clamp plate connected to each rotating rod, and two clamp plates being connected by a connecting rod.

[0008] The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping includes an adjusting seat comprising a limiting clamp, the middle part of which is connected to a threaded sleeve via a bearing, and the threaded sleeve being threadedly connected to a fixing screw. Beneficial effects

[0009] 1. This invention can compact the wear-resistant tiles that need to be installed onto the fifth tube bundle, and then weld them at the connection between the reinforcing bars and the first row of tube bundles. After completion, the wear-resistant tiles with two reinforcing bars are placed on the fourth tube bundle from the other side. After adjusting the device, the wear-resistant tiles on the fourth tube bundle are compacted onto the fourth tube bundle. After compaction, they are sequentially welded onto the wear-resistant tiles of the first, second, and third tube bundles that can be touched by the welding rod, thus realizing the installation and compaction of the wear-resistant tiles.

[0010] 2. The present invention can adjust the distance between the two rotating clamps to facilitate the compaction of the wear-resistant tiles at different positions, thereby improving the installation efficiency. Attached Figure Description

[0011] Appendix Figure 1 This is a perspective view of the present invention; Appendix Figure 2 This is the front view of the present invention; Appendix Figure 3 This is a side view of the present invention; Appendix Figure 4 This is a top view of the present invention; Appendix Figure 5 This is a schematic diagram of the adjustment seat; Appendix Figure 6 This is a schematic diagram of the structure after the rotating clamp rod has rotated; Appendix Figure 7 This is a structural diagram of the fifth tube bundle when the wear-resistant tiles are installed; Appendix Figure 8This is a structural diagram of the fourth tube bundle when the wear-resistant tiles are installed; In the diagram: 1. Upper connecting rod; 2. Upper clamping plate; 3. Square rod segment; 4. Fixing screw; 5. Round rod segment; 6. Lower clamping plate; 7. Support; 8. Lower connecting rod; 9. Sliding rod; 10. Screw sleeve; 11. Limiting clamping plate; 12. Rotating rod; 13. Fifth tube bundle; 14. Reinforcing bar; 15. Anti-wear tile; 16. Rotating clamping rod; 17. Support frame; 18. Adjusting seat; 19. Fourth tube bundle. Detailed Implementation

[0012] Reference Figures 1-5 A method for installing anti-wear tiles on boiler heating surface tube banks using bidirectional clamping, characterized by the following steps: (1) First, weld the anti-wear tile to two steel bars. After welding, hold the steel bars and place the anti-wear tile on the fifth tube bundle. Then hold one of the rotating rods. The rotating rod is rotatably connected to the support frame. Rotate the rotating rod to make the rotating clamp rotate. At this time, the device can be placed between two adjacent tube bundles. (2) After insertion, position the lower rotating clamp rod between the fifth tube bundle and the fourth tube bundle, then rotate the screw sleeve to adjust the position of the upper rotating clamp rod, and after adjustment, position it between the first tube bundle and the second tube bundle. (3) After the adjustment is completed, rotate the rotating rod to make the upper and lower rotating clamps rotate. After the upper rotating clamp rotates, it is between the first tube bundle and the second tube bundle, and after the lower rotating clamp rotates, it is between the fifth tube bundle and the fourth tube bundle. (4) After the rotation is completed, press the lower rotating clamp rod onto the anti-wear tile of the fifth tube bundle, continue to rotate the screw sleeve, adjust the position of the upper rotating clamp rod so that it is pressed against the bottom of the first tube bundle, so that the anti-wear tile on the fifth tube bundle can be compacted, and then weld the steel bar to the anti-wear tile on the first tube bundle. (5) After welding is completed, rotate the screw sleeve so that its limiting clamping plate moves the upper rotating clamping rod downward, so that it is released from the pressed state. Then rotate the rotating rod so that its rotating clamping rod rotates between the two adjacent tube bundles and remove the device.

[0013] A method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping, comprising a support frame 17, on which two rotating rods 12 are rotatably connected; The support frame includes two supports 7 arranged vertically, and the two supports are fixedly connected by a fixing screw. The rotating rod includes a round rod segment 5 located on the lower side and a square rod segment 3 located on the upper side, and the support is rotatably connected to the rotating rod; The upper and lower ends of the two rotating rods are respectively connected to rotating clamping rods 16 for pressing the anti-wear tile 15; There are two rotating clamping rods, which are connected to the upper and lower ends of the rotating rod respectively. The rotating clamping rod at the lower end includes two lower clamping plates 6. Each rotating rod has a lower clamping plate fixed at its bottom, and the two lower clamping plates are connected by a lower connecting rod 8. The rotating clamp at the upper end includes two upper clamping plates 2. Each rotating rod has an upper clamping plate slidably connected to its top. The upper clamping plates have square holes that mate with the square rod section of the rotating rod. The two upper clamping plates are connected by an upper connecting rod 1. The upper part of the fixing screw 4 of the support frame is connected to an adjustment seat 18 for adjusting the position of the upper rotating clamp rod.

[0014] The adjusting seat includes a limiting clamp 11, which clamps the upper clamp at both ends. The middle part of the limiting clamp is connected to the screw sleeve 10 through a bearing. The screw sleeve is threadedly connected to the fixing screw. Two sliding rods 9 are fixed at the bottom of the limiting clamp. The bottom of the sliding rods passes through the round hole on the support and slides. Working principle: When using it, refer to... Figures 6-8First, weld the anti-wear tile 15 to two steel bars 14. After welding, hold the steel bars and place the anti-wear tile on the fifth tube bundle 13. Then, hold one of the rotating rods and rotate it to rotate the clamping rod. At this time, the device can be placed between two adjacent tube bundles. After placement, the lower rotating clamping rod should be positioned between the fifth and fourth tube bundles 19. Then, rotate the screw sleeve to adjust the position of the upper rotating clamping rod. After adjustment, it should be positioned between the first and second tube bundles. After adjustment, rotate the rotating rod to rotate the upper and lower rotating clamping rods. After the upper rotating clamping rod rotates, it should be positioned between the first and second tube bundles, and after the lower rotating clamping rod rotates, it should be positioned between the fifth and fourth tube bundles. After rotation, press the lower rotating clamping rod onto the anti-wear tile of the fifth tube bundle. Continue to rotate the screw sleeve to adjust the position of the upper rotating clamping rod, so that it is pressed tightly against the bottom of the first tube bundle. This can compact the anti-wear tile on the fifth tube bundle. Then, weld the steel bar to the anti-wear tile on the first tube bundle. After welding, rotate the screw sleeve to limit... The positioning clamp moves the upper rotating clamp rod downwards, releasing it from its compressed state. Then, the rotating rod is rotated so that the rotating clamp rod is positioned between two adjacent tube bundles. The device is then removed, and from the other side, the wear-resistant tile with two welded steel bars is placed on the fourth tube bundle 19. The device is then inserted, positioning its lower rotating clamp rod between the fourth and third tube bundles. The screw sleeve is rotated, and the limiting clamp moves the upper rotating clamp rod to adjust its position, positioning it between the first and second tube bundles. Then, the rotating rod is rotated so that the upper... After the rotating clamp at the end rotates, it is positioned between the first and second tube bundles. After the rotating clamp at the lower end rotates, it is positioned between the fourth and third tube bundles. Press the lower rotating clamp onto the wear-resistant tile of the fourth tube bundle. Rotate the screw sleeve to adjust the position of the upper rotating clamp so that it is firmly pressed against the bottom of the first tube bundle and stops. At this time, the device presses the wear-resistant tile on the fourth tube bundle firmly onto the fourth tube bundle. After pressing, it is sequentially welded onto the wear-resistant tiles of the first, second, and third tube bundles that can be touched by the welding rod, thus realizing the installation and compaction of the wear-resistant tile.

Claims

1. A method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping, characterized in that: The method includes the following steps: (1) First, weld the anti-wear tile to two steel bars. After welding, hold the steel bars and place the anti-wear tile on the fifth tube bundle. Then hold one of the rotating rods. The rotating rod is rotatably connected to the support frame. Rotate the rotating rod to make the rotating clamp rotate. At this time, the device can be placed between two adjacent tube bundles. (2) After insertion, position the lower rotating clamp rod between the fifth tube bundle and the fourth tube bundle, then rotate the screw sleeve to adjust the position of the upper rotating clamp rod, and after adjustment, position it between the first tube bundle and the second tube bundle. (3) After the adjustment is completed, rotate the rotating rod to make the upper and lower rotating clamps rotate. After the upper rotating clamp rotates, it is between the first tube bundle and the second tube bundle, and after the lower rotating clamp rotates, it is between the fifth tube bundle and the fourth tube bundle. (4) After the rotation is completed, press the lower rotating clamp rod onto the anti-wear tile of the fifth tube bundle, continue to rotate the screw sleeve, adjust the position of the upper rotating clamp rod so that it is pressed against the bottom of the first tube bundle, so that the anti-wear tile on the fifth tube bundle can be compacted, and then weld the steel bar to the anti-wear tile on the first tube bundle. (5) After welding is completed, rotate the screw sleeve so that its limiting clamping plate moves the upper rotating clamping rod downward, so that it is released from the pressed state. Then rotate the rotating rod so that its rotating clamping rod rotates between the two adjacent tube bundles and remove the device.

2. The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping as described in claim 1, characterized in that: The support frame is rotatably connected to two rotating rods. The upper and lower ends of the two rotating rods are respectively connected to rotating clamping rods for pressing the anti-wear tiles. The upper part of the fixing screw of the support frame is connected to an adjusting seat for adjusting the position of the upper rotating clamping rod.

3. The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping as described in claim 2, characterized in that: The support frame includes two supports arranged vertically, and the two supports are fixedly connected by a fixing screw.

4. The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping as described in claim 3, characterized in that: The rotating clamping rod includes a clamping plate connected to each rotating rod, and the two clamping plates are connected by a connecting rod.

5. The method for installing anti-wear tiles on boiler heating surface tubes using bidirectional clamping as described in claim 4, characterized in that: The adjusting seat includes a limiting clamp plate, the middle part of which is connected to a threaded sleeve via a bearing, and the threaded sleeve is threadedly connected to the fixing screw.

Images