Device for preventing tube bundle of high-temperature reheater from shaking

Abstract

The utility model discloses a device for preventing a tube bundle of a high-temperature reheater from shaking, which belongs to the field of high-temperature reheaters and comprises a rectangular upper support plate and a rectangular lower support plate which are oppositely arranged in parallel, the upper support plate and the lower support plate are fixedly connected through two adjusting rods, and clamping pieces are arranged on the long edges of the upper support plate and the lower support plate and deviate from reheater tubes. One end of each adjusting rod is rotationally connected with the upper end face of the lower supporting plate, the two adjusting rods are installed on the short edge of the lower supporting plate, adjusting holes are formed in the positions, corresponding to the adjusting rods, of the upper supporting plate, and the free ends of the adjusting rods penetrate through the adjusting holes and are connected with the upper supporting plate through connecting pieces; the upper supporting plate and the lower supporting plate are provided with a plurality of mounting bases at equal intervals corresponding to the outermost side pipe of the reheater pipe row, and fixing pieces are fixedly connected to the side faces of the mounting bases. After installation is completed, the arrangement mode or the structure of the tube bundle cannot be affected, normal functions of the tube bundle can be guaranteed, front-back displacement of the tube bundle is effectively limited, and the problem of shaking of the tube bundle is fundamentally solved.

Description

Technical Field

[0001] This utility model belongs to the field of high-temperature reheaters, specifically relating to a device for preventing the tube bank of a high-temperature reheater from swaying. Background Technology

[0002] High-temperature reheaters are important heat exchange equipment in power plant boilers. They absorb the waste heat generated by combustion through convection heat transfer, further increasing the temperature of the medium inside the tubes and increasing the medium's work capacity, thereby improving system thermal efficiency, reducing fuel consumption, and lowering production costs.

[0003] Currently, due to a leak in the high-temperature reheater, the reheater is being inspected. The leak location has not been thinned by other leak points, and there is no obvious oxide scale or corrosion on the surface. It exhibits relatively obvious brittle cracking characteristics. Upon further inspection, it was found that there are obvious mechanical scratches, abrasions, and pits on the tube surface along the crack direction. The cause of these defects is that there was an installation deviation when the high-temperature reheater was installed through the roof superheater. This resulted in the need to cut the roof superheater fins when the high-temperature reheater passed through the roof superheater. Due to the residue of the cut fins, and the fact that some fins have sharp corners, the expansion and shaking of the tube bank during unit start-up, shutdown, and operation caused mechanical wear and scratches on the high-temperature reheater.

[0004] In existing high-temperature reheaters, the tubes are connected by sliding clamps, and there are no tube-panel fixing devices between the tube panels. During operation, the tube panels sway due to external flue gas scouring and internal steam disturbance, leading to deformation. In severe cases, this can cause the high-temperature reheater tubes to rub against the roof tubes. If not detected in time, this can easily lead to tube rupture accidents, forcing the unit to shut down. Therefore, there is an urgent need for a device to prevent the swaying of the high-temperature reheater tubes in power plant boilers. To solve this major hidden danger, technicians installed a device to prevent the swaying of the high-temperature reheater tubes on the leeward side of the high-temperature reheater. After adding this device, the swaying of the high-temperature reheater tubes is avoided, the rubbing against the roof tubes is reduced, and the damage to the heating surface caused by the swaying of the high-temperature reheater tubes is eliminated.

[0005] Existing technologies disclose several patents regarding devices to prevent swaying of high-temperature reheater tube banks. Among them, utility model patent CN208170361U discloses a support and hanger device suitable for boiler high-temperature reheaters. This patent includes a vertical support pipe clamp and multiple horizontal support plates. The support pipe clamp is connected to the high-temperature reheater tube bank without welding. The support pipe clamp has evenly spaced holes along its height to serve as mounting holes for the support plates. Each support plate is inserted into the gap between adjacent tubes in the high-temperature reheater tube bank and abuts against the tube above it to support the weight of the tube above it. This device provides reasonable force distribution and is effective in eliminating stress concentration. However, the connection method between the support plates and the support lugs is not stable and reliable enough. Utility Model Content

[0006] To overcome the problems of existing pipe-pile fixing devices being complex in structure, costly in manufacturing and installation, and affecting the arrangement or structure of the pipe pile after installation, failing to effectively limit the forward and backward displacement of the pipe pile, and unable to completely prevent pipe pile swaying, this utility model provides a device to prevent swaying of high-temperature reheater pipe piles. The device includes a rectangular upper support plate and a lower support plate arranged relatively parallel to each other. The upper and lower support plates are fixedly connected by two adjusting rods. Several supporting members are provided on the long edges of the upper and lower support plates away from the reheater tubes. One end of each adjusting rod is rotatably connected to the upper surface of the lower support plate, and the two adjusting rods are respectively installed on the short edge of the lower support plate. Adjusting holes are provided on the upper support plate corresponding to the adjusting rods. The free end of each adjusting rod passes through the adjusting hole and is connected to the upper support plate through a connector. Several mounting seats are equidistantly provided on the upper and lower support plates corresponding to the outermost tubes of the reheater pipe pile, and fixing members are fixedly connected to the sides of each mounting seat.

[0007] By using clamping components on the outer sides of the upper and lower support plates, the device installed on the reheater tube bank can be reinforced to improve its stability and ensure its stability and reliability. At the same time, the connections between the adjusting rod and the telescopic rod and the upper and lower support plates are all rotatable. In use, tilting the adjusting rod and the telescopic rod in the same direction causes the fixing components on the upper and lower support plates to be misaligned and fix the reheater tube bank, making the device more firmly fixed to the reheater tube bank.

[0008] Furthermore, the supporting component includes several connecting rods and U-shaped fixing clips fixed to both ends of the connecting rods. The connecting rods are fixedly connected to the outer side of the closed end of the U-shaped fixing clips. The opening height of the U-shaped fixing clips matches the thickness of the corresponding upper support plate or lower support plate, and the two U-shaped fixing clips are arranged in parallel.

[0009] Through the above technical solution, clamping rods that can be used to fix the upper and lower support plates are set on the same side of the upper support plate and the lower support plate opposite to the outermost tube of the reheater tube bank. The clamping rods of the upper and lower support plates are reinforced by connecting rods and U-shaped fixing clips at both ends, thereby increasing their rigidity.

[0010] Furthermore, the connector includes a fixed shaft mounted inside the adjustment hole, the fixed shaft being rotatably connected to the inner wall of the adjustment hole, a connecting block being sleeved in the middle of the fixed shaft, and a through hole being vertically opened in the middle of the connecting block corresponding to the adjustment rod, the adjustment rod passing through the through hole and connecting to the upper support plate.

[0011] Through the above technical solution, a fixed shaft is installed on the inner wall of the adjusting hole, a connecting block is sleeved in the middle of the fixed shaft, and a through hole is vertically opened in the connecting block. The through hole passes through the fixed shaft, and the adjusting rod passes through the through hole and is threadedly connected to it. This allows for adjustment of the distance between the upper support plate and the lower support plate, and adjustment of the degree of misalignment between the upper and lower support plates.

[0012] Furthermore, several telescopic rods are provided in the middle of the opposite sides of the upper support plate and the lower support plate, and both ends of the telescopic rods are fixedly connected to the upper support plate and the lower support plate respectively through rotating blocks.

[0013] The above technical solution increases the rigidity of the device by installing telescopic rods on the upper and lower support plates. A rotating block is connected to the connecting section of the telescopic rod, and the rotating block is fixedly connected to the upper or lower support plate, which facilitates the misalignment and fixation of the upper and lower support plates.

[0014] Furthermore, the rotating block includes a base plate that is fixedly connected to the upper support plate or the lower support plate respectively. Two fixed seats are symmetrically arranged on the side of the base plate away from the upper support plate or the lower support plate. A rotating rod is mounted on the fixed seat. Both ends of the rotating rod are rotatably connected to the fixed seat. Both ends of the telescopic rod are correspondingly sleeved on the middle part of the rotating rod.

[0015] Furthermore, the fixing component includes a first clamping plate and a second clamping plate. The opposite sides of the first clamping plate and the second clamping plate are corresponding arc grooves. The outer middle part of the arc groove of the first clamping plate is fixedly connected to the mounting base. Both ends of the second clamping plate are fixedly connected to the first clamping plate by fixing bolts.

[0016] Furthermore, both the second clamping plate and the first clamping plate have fixing plates extending outward from their two free ends. Each fixing plate has a threaded hole that matches the fixing bolt.

[0017] Furthermore, the connecting rod includes a sleeve and an inner rod. The sleeve is fitted onto the outside of the inner rod, and the outside of the sleeve is provided with several fixing screw holes. An adjusting screw is provided to match the fixing screw holes and abuts against the inner rod.

[0018] Furthermore, the adjusting rod is threadedly connected to the through hole, and a limit nut is provided at the free end of the adjusting rod near the upper support plate.

[0019] Furthermore, the maximum length of the telescopic rod is less than the width of the three reheater tubes.

[0020] Through the above technical solution, alloy materials can be used in the production of this device, giving it good high-temperature resistance and making it suitable for the working environment of high-temperature reheaters.

[0021] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0022] (1) This fixing device is simple and effective. After installation, it will not affect the arrangement or structure of the pipe bank. It can ensure the normal function of the pipe bank and effectively limit the front and rear displacement of the pipe bank, thus fundamentally avoiding the problem of pipe bank shaking.

[0023] (2) Adding this device can prevent the high-temperature reheater tube bank from shaking, reduce the friction between the high-temperature reheater tube bank and the ceiling, and eliminate the serious safety hazard of damage to the heated surface caused by the shaking of the high-temperature reheater tube bank.

[0024] (3) The fixed device has a relatively simple structure, is easy to install and effective. After installation, it will not affect the arrangement or structure of the tube bank and can ensure the normal function of the tube bank. After adding this device, the shaking of the high-temperature reheater tube bank can be avoided, eliminating the serious safety hazard of damage to the heating surface caused by the shaking of the high-temperature reheater tube bank. After installation, the collision and friction of the high-temperature reheater tube bank through the ceiling can be reduced, eliminating the serious safety hazard of damage to the heating surface caused by the shaking of the tube bank and improving the operating safety of the boiler. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a device for preventing the swaying of tube banks in a high-temperature reheater according to this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a device for preventing the swaying of tube banks in a high-temperature reheater according to this utility model from another angle.

[0028] In the diagram, 1. Upper support plate; 2. Lower support plate; 3. Adjusting rod; 4. Holding component; 5. Adjusting hole; 6. Connecting component; 7. Mounting base; 8. Fixing component; 9. U-shaped fixing clip; 10. Fixed shaft; 11. Connecting block; 12. Telescopic rod; 13. Rotating block; 14. Base plate; 15. Fixed base; 16. Rotating rod; 17. First clamping plate; 18. Second clamping plate; 19. Sleeve; 20. Inner rod; 21. Adjusting screw; 22. Limiting nut. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0030] This embodiment employs clamping components on the outer sides of the upper and lower support plates. This can be used to reinforce the device mounted on the reheater tube bank, improving its stability and ensuring its reliability. It allows for staggered fixing of the reheater tube bank by the fasteners on the upper and lower support plates, resulting in a more secure fixation of the device to the reheater tube bank. Specific implementation details are as follows:

[0031] like Figure 1-2 As shown, a device for preventing the swaying of high-temperature reheater tube bank includes a rectangular upper support plate 1 and a lower support plate 2 arranged relatively parallel to each other. The upper support plate 1 and the lower support plate 2 are fixedly connected by two adjusting rods 3. Several supporting members 4 are provided at the long edge of the upper support plate 1 and the lower support plate 2 away from the reheater tubes. One end of the adjusting rod 3 is rotatably connected to the upper end face of the lower support plate 2, and the two adjusting rods 3 are respectively installed at the short edge of the lower support plate 2. The upper support plate 1 is provided with adjusting holes 5 corresponding to the adjusting rods 3. The free end of the adjusting rod 3 passes through the adjusting hole 5 and is connected to the upper support plate 1 through a connector 6. Several mounting seats 7 are provided at equal intervals on the upper support plate 1 and the lower support plate 2 corresponding to the outermost tubes of the reheater tube bank. Fixing members 8 are fixedly connected to the sides of the mounting seats 7.

[0032] Here, clamping components are installed on the outer sides of the upper support plate 1 and the lower support plate 2 to reinforce the device installed on the reheater tube bank, improve the stability of the device, and ensure the stability and reliability of the device. At the same time, the connections between the adjusting rod 3 and the telescopic rod 12 and the upper support plate 1 and the lower support plate 2 are all set to be rotatable. In use, the adjusting rod 3 and the telescopic rod 12 are tilted in the same direction to make the fixing components 8 on the upper support plate 1 and the lower support plate 2 misaligned and fix the reheater tube bank, so that the device is more firmly fixed to the reheater tube bank.

[0033] In a preferred embodiment, the support member 4 includes several connecting rods and U-shaped fixing clips 9 fixed to both ends of the connecting rods. The connecting rods are fixedly connected to the outer side of the closed end of the U-shaped fixing clips 9. The opening height of the U-shaped fixing clips 9 matches the thickness of the corresponding upper support plate 1 or lower support plate 2, and the two U-shaped fixing clips 9 are arranged in parallel.

[0034] Here, clamping rods for fixing the upper support plate 1 and the lower support plate 2 are provided on the same side as the outermost tube of the reheater tube bank. The clamping rods of the upper support plate 1 and the lower support plate 2 are reinforced by connecting rods and U-shaped fixing clips 9 at both ends to increase their rigidity.

[0035] In a preferred embodiment, the connector 6 includes a fixed shaft 10 mounted inside the adjustment hole 5. The fixed shaft 10 is rotatably connected to the inner wall of the adjustment hole 5. A connecting block 11 is sleeved in the middle of the fixed shaft 10. A through hole is vertically opened in the middle of the connecting block 11 corresponding to the adjustment rod 3. The adjustment rod 3 is connected to the upper support plate 1 through the through hole.

[0036] Here, a fixed shaft 10 is mounted on the inner wall of the adjusting hole 5, a connecting block 11 is sleeved in the middle of the fixed shaft 10, and a through hole is vertically opened in the connecting block 11. The through hole passes through the fixed shaft 10, and the adjusting rod 3 passes through the through hole and is threadedly connected to it, so as to adjust the distance between the upper support plate 1 and the lower support plate 2 and adjust the degree of misalignment between the upper and lower support plates.

[0037] In a preferred embodiment, several telescopic rods 12 are provided in the middle of the opposite sides of the upper support plate 1 and the lower support plate 2. Both ends of the telescopic rods 12 are fixedly connected to the upper support plate 1 and the lower support plate 2 respectively through rotating blocks 13.

[0038] Here, the installation of telescopic rods 12 on the upper support plate 1 and the lower support plate 2 can increase the rigidity of the device. A rotating block 13 is connected to the end of the telescopic rod 12, and the rotating block 13 is fixedly connected to the upper support plate 1 or the lower support plate 2, which facilitates the misalignment and fixation of the upper support plate 1 and the lower support plate 2.

[0039] Here, the connection between the adjusting rod 3 and the lower support plate 2 is also made through the rotating block 13.

[0040] In a preferred embodiment, the rotating block 13 includes a base plate 14 that is fixedly connected to the upper support plate 1 or the lower support plate 2 respectively. Two fixed seats 15 are symmetrically arranged on the side of the base plate 14 away from the upper support plate 1 or the lower support plate 2. A rotating rod 16 is mounted on the fixed seat 15. Both ends of the rotating rod 16 are rotatably connected to the fixed seat 15. Both ends of the telescopic rod 12 are correspondingly sleeved on the middle part of the rotating rod 16.

[0041] In a preferred embodiment, the fastener 8 includes a first clamping plate 17 and a second clamping plate 18. The opposite sides of the first clamping plate 17 and the second clamping plate 18 are corresponding arc grooves. The outer middle part of the arc groove of the first clamping plate 17 is fixedly connected to the mounting base 7. The two ends of the second clamping plate 18 are fixedly connected to the first clamping plate 17 by fixing bolts.

[0042] In a preferred embodiment, both the second clamping plate 18 and the first clamping plate 17 have fixing plates extending outward from their two free ends. Each fixing plate has a threaded hole that matches the fixing bolt.

[0043] In a preferred embodiment, the connecting rod includes a sleeve 19 and an inner rod 20. The sleeve 19 is sleeved on the outside of the inner rod 20, and a plurality of fixing screw holes are provided on the outside of the sleeve 19. An adjusting screw 21 is provided in the matching fixing screw holes to abut against the inner rod 20.

[0044] Here, the sleeve 19, the inner rod 20, and the free end are all fixedly connected to the U-shaped fixing clip 9.

[0045] In a preferred embodiment, the adjusting rod 3 is threadedly connected to the through hole, and a limit nut 22 is provided at the free end of the adjusting rod 3 near the upper support plate 1.

[0046] In a preferred embodiment, the maximum length of the telescopic rod 12 is less than the width of the three reheater tubes.

[0047] Here, the high-temperature reheater tube bank swaying device can be made of alloy material during production, giving it good high-temperature resistance and making it suitable for the working environment of the high-temperature reheater.

[0048] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preventing swaying of tube banks in a high-temperature reheater, characterized in that, The system includes a rectangular upper support plate (1) and a lower support plate (2) arranged in parallel. The upper support plate (1) and the lower support plate (2) are fixedly connected by two adjusting rods (3). Several supporting members (4) are provided on the long side edges of the upper support plate (1) and the lower support plate (2) away from the reheater tubes. One end of the adjusting rod (3) is rotatably connected to the upper end face of the lower support plate (2), and the two adjusting rods (3) are respectively installed on the short side edge of the lower support plate (2). An adjusting hole (5) is opened on the upper support plate (1) corresponding to the adjusting rod (3). The free end of the adjusting rod (3) passes through the adjusting hole (5) and is connected to the upper support plate (1) through a connector (6). Several mounting seats (7) are provided on the upper support plate (1) and the lower support plate (2) at equal intervals corresponding to the outermost tube of the reheater tube bank. Fixing members (8) are fixedly connected to the sides of the mounting seats (7).

2. The device for preventing swaying of high-temperature reheater tube banks according to claim 1, characterized in that, The supporting component (4) includes several connecting rods and U-shaped fixing clips (9) fixed at both ends of the connecting rods. The connecting rods are fixedly connected to the outer side of the closed end of the U-shaped fixing clips (9). The opening height of the U-shaped fixing clips (9) matches the thickness of the corresponding upper support plate (1) or lower support plate (2), and the two U-shaped fixing clips (9) are arranged in parallel.

3. The device for preventing swaying of the tube bank in a high-temperature reheater according to claim 1, characterized in that, The connector (6) includes a fixed shaft (10) mounted inside the adjustment hole (5). The fixed shaft (10) is rotatably connected to the inner wall of the adjustment hole (5). A connecting block (11) is sleeved in the middle of the fixed shaft (10). A through hole is vertically opened in the middle of the connecting block (11) corresponding to the adjustment rod (3). The adjustment rod (3) passes through the through hole and is connected to the upper support plate (1).

4. The device for preventing swaying of high-temperature reheater tube banks according to claim 1, characterized in that, Several telescopic rods (12) are provided on the middle of the opposite sides of the upper support plate (1) and the lower support plate (2). Both ends of the telescopic rods (12) are fixedly connected to the upper support plate (1) and the lower support plate (2) respectively through rotating blocks (13).

5. A device for preventing swaying of high-temperature reheater tube banks according to claim 4, characterized in that, The rotating block (13) includes a base plate (14) that is fixedly connected to the upper support plate (1) or the lower support plate (2) respectively. Two fixed seats (15) are symmetrically arranged on the side of the base plate (14) away from the upper support plate (1) or the lower support plate (2). A rotating rod (16) is mounted on the fixed seat (15). Both ends of the rotating rod (16) are rotatably connected to the fixed seat (15). Both ends of the telescopic rod (12) are correspondingly sleeved on the middle part of the rotating rod (16).

6. A device for preventing swaying of high-temperature reheater tube banks according to claim 2, characterized in that, The fastener (8) includes a first clamping plate (17) and a second clamping plate (18). The opposite sides of the first clamping plate (17) and the second clamping plate (18) are corresponding arc grooves. The outer middle part of the arc groove of the first clamping plate (17) is fixedly connected to the mounting base (7). Both ends of the second clamping plate (18) are fixedly connected to the first clamping plate (17) by fixing bolts.

7. A device for preventing swaying of high-temperature reheater tube banks according to claim 6, characterized in that, Both the second clamping plate (18) and the first clamping plate (17) have fixing plates extending outward from their two free ends. Each fixing plate has a threaded hole that matches the fixing bolt.

8. A device for preventing swaying of high-temperature reheater tube banks according to claim 2, characterized in that, The connecting rod includes a sleeve (19) and an inner rod (20). The sleeve (19) is sleeved on the outside of the inner rod (20), and a plurality of fixing screw holes are provided on the outside of the sleeve (19). An adjusting screw (21) is provided to match the fixing screw holes and abut against the inner rod (20).

9. A device for preventing swaying of high-temperature reheater tube banks according to claim 3, characterized in that, The adjusting rod (3) is threadedly connected to the through hole, and a limiting nut (22) is provided on the free end of the adjusting rod (3) near the upper support plate (1).

10. A device for preventing swaying of high-temperature reheater tube banks according to claim 4, characterized in that, The maximum length of the telescopic rod (12) is less than the width of the three reheater tubes.

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