A high-temperature reheater reverse U-bend device

Abstract

The utility model discloses a high temperature reheater inverted U type bending device, including fixed crosspiece, the top fixed mounting of fixed crosspiece has the first spring, the number of first spring is four. The utility model discloses a plurality of groups of arc support and arc gland are adopted to the same pipe body is fixed together and is clamped, has improved the fixed reliability of pipe body significantly, has reduced the risk of falling in the operation process because of vibration or loosening effectively, simultaneously, with the elastic support structure that second spring, baffle, support rod, arc support and arc gland constitute, can realize independent support to the plurality of pipe body on the bearing horizontal plate, when the expansion of some pipe body because of heat, can drive the support rod and baffle compression second spring of corresponding position, thereby effectively relieving the local stress concentration that causes in bearing horizontal plate because of the uneven heating of each pipe body, avoids the deformation or rupture of bearing horizontal plate because of uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature reheater technology, specifically to an inverted U-shaped bend device for a high-temperature reheater. Background Technology

[0002] In thermal power generation and industrial boilers, the high-temperature reheater is the core heat exchange equipment in the boiler system. Its operating status directly affects the boiler's thermal efficiency and operational safety. The inverted U-shaped bend device of the high-temperature reheater, as a key structural component, plays an important role in guiding the flow of high-temperature medium and adapting to the thermal expansion and deformation of the system. Its working environment is extremely harsh, requiring it to withstand the scouring of high-temperature flue gas, the high temperature and high pressure of the medium, and frequent thermal expansion and contraction cycles for a long time. To ensure the installation stability and structural reliability of the inverted U-shaped bend device, it is usually suspended and fixed by U-shaped bend hanging components. However, in actual operation, due to multiple factors such as the degradation of material properties under high temperature environment, the additional stress caused by the difference in thermal expansion, and the vibration and impact generated by the flow of medium, the U-shaped bend hanging plate is very prone to cracking due to stress, causing structural deformation or even falling off, which in turn has an adverse impact on the safe operation of the boiler. Utility Model Content

[0003] The purpose of this invention is to provide a U-shaped bend device for a high-temperature reheater, which can effectively prevent the hanging components from deforming and breaking due to stress, and ensure that the boiler can operate stably and safely.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature reheater inverted U-shaped bend device, comprising a fixed crossbeam, four first springs fixedly installed on the top of the fixed crossbeam, a top plate fixedly installed between the tops of the four first springs, three columns fixedly installed at the bottom of the top plate, a bearing crossbeam fixedly installed between the bottoms of the three columns, two second springs fixedly installed on both sides of the bearing crossbeam, a baffle plate fixedly installed on the surface of the second spring away from the bearing crossbeam, a support rod fixedly connected between the middle ends of the two baffle plates, arc-shaped supports fixedly connected to both ends of the front surface of the support rod, an arc-shaped pressure cap fixedly installed on the front surface of the arc-shaped support, and a tube body clamped between the surfaces of the four arc-shaped supports and the surfaces of the arc-shaped pressure caps.

[0005] As a preferred embodiment, both ends of the back of the arc-shaped support are fixedly connected to reinforcing rods, and the surface of the reinforcing rods is fixedly connected to the surface of the support rod.

[0006] As a preferred embodiment, the back of the fixed crossbar is provided with mounting holes, and reinforcing blocks are fixedly connected to both sides of the fixed crossbar.

[0007] As a preferred embodiment, the surface of the fixed crossbeam is provided with a first through hole, and the number of the first through holes is three, with the surface of the column movably intersecting the surface of the first through hole.

[0008] As a preferred embodiment, the surface of the bearing plate is provided with a second through hole, and the number of the second through holes is eight, and the surface of the support rod is movably inserted through the surface of the second through hole.

[0009] As a preferred embodiment, the outer surface of the tube is coated with a metal-ceramic coating.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] This invention significantly improves the reliability of pipe fixing by using multiple sets of arc-shaped supports and arc-shaped caps to clamp and fix the same pipe body together, effectively reducing the risk of it falling off due to vibration or loosening during operation. At the same time, with the help of the elastic support structure composed of the second spring, baffle, support rod, arc-shaped support and arc-shaped cap, multiple sets of pipe bodies on the bearing plate can be independently supported. When a pipe body expands due to heat, it can drive the support rod and baffle at the corresponding position to compress the second spring, thereby effectively relieving the local stress concentration caused by uneven heating of each pipe body on the bearing plate, and avoiding deformation or cracking of the bearing plate due to uneven force. In addition, when multiple pipe bodies expand due to heat at the same time, they will push the bearing plate upward as a whole, which will then be transmitted to the top plate through the column and stretch the first spring, effectively absorbing the thermal expansion displacement of the entire system, significantly reducing the overload stress borne by the fixed crossbeam, preventing deformation or damage, and thus fundamentally ensuring the long-term stability of pipe body installation and the safe and reliable operation of the boiler. Attached Figure Description

[0012] Figure 1 This is a perspective view of the present utility model;

[0013] Figure 2 This is a schematic diagram of the rear structure of the present invention;

[0014] Figure 3 This is a schematic diagram of the fixed crossbeam structure of this utility model;

[0015] Figure 4 This is a partial structural diagram of the load-bearing horizontal plate of this utility model.

[0016] In the diagram: 1. Fixed crossbeam; 2. Bearing crossbeam; 3. Arc-shaped pressure cap; 4. Tube body; 5. Column; 6. Top plate; 7. First spring; 8. Support rod; 9. Reinforcing block; 10. Mounting hole; 11. First through hole; 12. Second through hole; 13. Baffle plate; 14. Second spring; 15. Arc-shaped support; 16. Reinforcing rod. Detailed Implementation

[0017] 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.

[0018] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0019] The components in this application, such as the fixed crossbeam 1, the load-bearing crossbeam 2, the arc-shaped pressure cap 3, the tube body 4, the column 5, the top plate 6, the first spring 7, the support rod 8, the reinforcing block 9, the mounting hole 10, the first through hole 11, the second through hole 12, the baffle 13, the second spring 14, the arc-shaped support 15, and the reinforcing rod 16, are all general standard parts or parts known to those skilled in the art. Their structure and principle are common knowledge and can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0020] Example 1:

[0021] Please see Figures 1-4 As shown, this utility model provides a high-temperature reheater inverted U-shaped bend device, including a fixed crossbeam 1. Four first springs 7 are fixedly installed on the top of the fixed crossbeam 1. A top plate 6 is fixedly installed between the tops of the four first springs 7. Three columns 5 are fixedly installed at the bottom of the top plate 6. A bearing crossbeam 2 is fixedly installed between the bottoms of the three columns 5. Second springs 14 are fixedly installed on both sides of the bearing crossbeam 2. A baffle 13 is fixedly installed on the surface of the second spring 14 and on the side away from the bearing crossbeam 2. A support rod 8 is fixedly connected between the middle ends of the two baffles 13. Arc-shaped supports 15 are fixedly connected to both ends of the front surface of the support rod 8. Arc-shaped pressure caps 3 are fixedly installed on the front surface of the arc-shaped supports 15. A tube body 4 is clamped between the surface of the four arc-shaped supports 15 and the surface of the arc-shaped pressure caps 3.

[0022] In this technical solution, by using multiple sets of arc-shaped supports 15 and arc-shaped caps 3 to jointly clamp and fix the same pipe body 4, the fixing reliability of the pipe body 4 is significantly improved, effectively reducing the risk of it falling off due to vibration or loosening during operation. Simultaneously, the elastic support structure formed by the second spring 14, baffle 13, support rod 8, arc-shaped supports 15, and arc-shaped caps 3 can independently support multiple sets of pipe bodies 4 on the bearing plate 2. When a pipe body 4 expands due to heat, it can drive the corresponding support rod 8 and baffle 13 to compress the second spring 14, thereby... This effectively alleviates localized stress concentration on the bearing plate 2 caused by uneven heating of the various tubes 4, preventing deformation or cracking of the bearing plate 2 due to uneven stress. Furthermore, when multiple tubes 4 are heated and expand simultaneously, their combined action will push the bearing plate 2 upward as a whole, which will then be transmitted to the top plate 6 through the column 5 and stretch the first spring 7. This effectively absorbs the overall thermal expansion displacement of the system, significantly reducing the overload stress borne by the fixed crossbeam 1 and preventing deformation or damage. This fundamentally ensures the long-term stability of the tube installation and the safe and reliable operation of the boiler.

[0023] It should be noted that both the first spring 7 and the second spring 14 are made of cobalt-based high-performance alloys, which have high high-temperature strength, outstanding corrosion resistance and creep resistance.

[0024] Example 2:

[0025] Based on Embodiment 1, this utility model is as follows: Figures 1-4 As shown, the arc-shaped support 15 has two ends of the back fixedly connected with reinforcing rods 16. The surface of the reinforcing rods 16 is fixedly connected to the surface of the support rods 8. The back of the fixed crossbeam 1 has mounting holes 10. The two sides of the fixed crossbeam 1 are fixedly connected with reinforcing blocks 9. The surface of the fixed crossbeam 1 has three first through holes 11. The surface of the column 5 is movably inserted through the surface of the first through holes 11. The surface of the bearing crossbeam 2 has eight second through holes 12. The surface of the support rods 8 is movably inserted through the surface of the second through holes 12. The outer surface of the tube body 4 is coated with a metal ceramic coating.

[0026] In this technical solution, the reinforcement rod 16 effectively improves the connection strength between the arc-shaped support 15 and the support rod 8. The mounting hole 10 facilitates the installation and fixing of the fixed crossbeam 1. The reinforcement block 9 strengthens both sides of the fixed crossbeam 1. The first through hole 11 accommodates and guides the column 5, preventing it from shifting during movement. The second through hole 12 accommodates and guides the support rod 8, preventing it from shifting during movement. The metal-ceramic coating provides excellent wear resistance and high-temperature corrosion protection on the surface of the pipe body 4, extending its service life.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A U-shaped bending device for a high-temperature reheater, comprising a fixed crossbeam (1), characterized in that: The top of the fixed crossbeam (1) is fixedly installed with a first spring (7), and there are four first springs (7). A top plate (6) is fixedly installed between the tops of the four first springs (7). A column (5) is fixedly installed at the bottom of the top plate (6), and there are three columns (5). A bearing crossbeam (2) is fixedly installed between the bottoms of the three columns (5). A second spring (14) is fixedly installed on both sides of the bearing crossbeam (2). A baffle (13) is fixedly installed on the surface of the second spring (14) and on the side away from the bearing crossbeam (2). A support rod (8) is fixedly connected between the middle ends of the two baffles (13). An arc-shaped support (15) is fixedly connected to both ends of the front surface of the support rod (8). An arc-shaped pressure cap (3) is fixedly installed on the front surface of the arc-shaped support (15). A tube body (4) is clamped between the surface of the four arc-shaped supports (15) and the surface of the arc-shaped pressure cap (3).

2. The high-temperature reheater inverted U-shaped bend device according to claim 1, characterized in that: Both ends of the back of the arc-shaped support (15) are fixedly connected to reinforcing rods (16), and the surface of the reinforcing rods (16) is fixedly connected to the surface of the support rod (8).

3. The inverted U-shaped bend device for a high-temperature reheater according to claim 1, characterized in that: The fixed crossbar (1) has a mounting hole (10) on its back side, and reinforcing blocks (9) are fixedly connected to both sides of the fixed crossbar (1).

4. The inverted U-shaped bend device for a high-temperature reheater according to claim 1, characterized in that: The surface of the fixed crossbar (1) is provided with a first through hole (11), and there are three first through holes (11). The surface of the column (5) is movably inserted through the surface of the first through hole (11).

5. The inverted U-shaped bend device for a high-temperature reheater according to claim 1, characterized in that: The surface of the bearing plate (2) is provided with a second through hole (12), and there are eight second through holes (12). The surface of the support rod (8) is movably inserted through the surface of the second through hole (12).

6. The high-temperature reheater inverted U-shaped bend device according to claim 1, characterized in that: The outer surface of the tube (4) is coated with a metal ceramic coating.

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