Mechanical structure of elastic damping support for heat pipe bundle of waste heat boiler

Abstract

This invention provides an elastic vibration-damping support structure for heat pipe bundles in a waste heat boiler. It includes a mounting base with connecting frames installed at both ends of the top of the mounting base. A ring is provided at the top of the connecting frames to wrap and fix the heat pipe bundle. Arc-shaped connecting seats are symmetrically installed on both sides of the outer wall of the ring. Several U-shaped grooves are spaced apart along the outer wall of the connecting seats. Several spaced-apart screws are provided between two connecting seats, with the ends of the screws placed within the U-shaped grooves. Two locking nuts are threaded to both ends of the screws, positioned on either side of the connecting seat. This invention, by using screws and U-shaped grooves in conjunction with locking nuts to securely connect the connecting seats between the two rings, effectively enhances the structural stability of the heat pipe bundle at the flange connection, prevents tube bundle vibration and flange bolt loosening caused by flue gas flow impact, and improves the overall reliability and sealing of the connection.

Description

Technical Field

[0001] This utility model relates to the field of waste heat boiler technology, and more specifically, to an elastic shock-absorbing support mechanical structure for heat pipe bundles in a waste heat boiler. Background Technology

[0002] Waste heat boilers, as the name suggests, are boilers that utilize the residual heat from waste gas, waste materials, or waste liquids in various industrial processes, as well as the heat generated from the combustion of combustible substances, to heat water to a certain temperature. Oil-fired boilers, gas-fired boilers, and coal-fired boilers with waste heat recovery and utilization functions in the smoke box and flue are also called waste heat boilers. Waste heat boilers can produce hot water or steam through waste heat recovery to supply other processes.

[0003] The waste heat boiler is divided into six circulation loops, each consisting of downcomers and risers. Feedwater from each flue section is introduced from the boiler drum through the downcomers into the lower headers of each flue, and then into the respective heating surfaces. After passing through the heating surfaces, the water generates steam, which enters the inlet header and is then introduced into the boiler drum through the risers. All flues are connected by flanges.

[0004] In waste heat boilers, heat pipe bundles are the core component for recovering high-temperature flue gas. For ease of installation, heat pipe bundles are typically assembled from multiple pipes connected by flanges. Although lifting or supporting components are installed on each pipe section for fixation, the long joints can still cause instability during installation due to the impact of flue gas flow. This is especially true at the joints between pipe sections, where stress is only supported by bolts on the flanges. The impact of flowing flue gas can easily cause these bolts to loosen, affecting the connection between pipes. Therefore, we propose an elastic shock-absorbing support mechanical structure for waste heat boiler heat pipe bundles to address these issues. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides a solution that overcomes or at least partially solves the above technical problems.

[0006] This utility model provides an elastic shock-absorbing support mechanical structure for a waste heat boiler heat pipe bundle, including a mounting base, connecting frames installed at both ends of the top of the mounting base, and a ring for wrapping and fixing the heat pipe bundle provided at the top of the connecting frame.

[0007] A curved connecting seat is symmetrically installed on both sides of the outer wall of the ring. Several U-shaped grooves are opened along the outer wall of the connecting seat. Several screws are arranged at intervals between the two connecting seats. The ends of the screws are placed in the U-shaped grooves. Two locking nuts are threaded to both ends of the screws, and the two locking nuts are arranged on both sides of the connecting seat.

[0008] In a preferred embodiment, elastic washers are provided on both sides of the locking nut near the connecting seat, and the washers are fitted onto the screw.

[0009] In a preferred embodiment, arc-shaped cut surfaces are provided on both sides of the port of the U-shaped groove.

[0010] In a preferred embodiment, the connecting frame includes a support base, which is fixed to the end of the mounting base. A cylindrical cavity is provided at both ends of the top of the support base, and a support rod is placed inside the cylindrical cavity. The top of the support rod is fixed to a ring, and multiple through holes are provided on the support rod along the length of the support rod. A first locking bolt is provided on the top of the support base, and the first locking bolt corresponds to the through holes.

[0011] In a preferred embodiment, the ring includes a first arc-shaped seat and a second arc-shaped seat that are coaxially corresponding. The outer wall of the first arc-shaped seat is fixed to the end of the support rod, and both the end of the first arc-shaped seat and the end of the second arc-shaped seat are equipped with fixing ears. The two corresponding fixing ears are fixed together by a second locking bolt. In addition, the connecting seat is fixed on the outer wall of the corresponding first arc-shaped seat and the outer wall of the second arc-shaped seat.

[0012] In a preferred embodiment, a first arc plate is coaxially provided on the inner side of the first arc seat, and a plurality of first compression springs are provided between the first arc plate and the first arc seat at intervals. One end of the first compression spring is fixed on the first arc plate, and the other end of the first compression spring is fixed on the first arc seat.

[0013] A second arc-shaped plate is coaxially provided on the inner side of the second arc-shaped seat. A plurality of second compression springs are arranged at intervals between the second arc-shaped plate and the second arc-shaped seat. One end of the second compression spring is fixed on the second arc-shaped plate, and the other end of the second compression spring is fixed on the second arc-shaped seat.

[0014] In a preferred embodiment, heat-insulating elastic rubber sheets are installed on the inner side of both the first arc-shaped plate and the inner side of the second arc-shaped plate.

[0015] The targeted solution provided by this utility model has the following beneficial effects:

[0016] 1. This utility model uses a screw and a U-shaped groove to fasten the connecting seat between the two ring sleeves with a locking nut, which effectively enhances the structural stability of the heat pipe bundle at the flange connection, prevents the tube bundle from vibrating and the flange bolts from loosening due to the impact of flue gas flow, and improves the reliability and sealing of the overall connection.

[0017] 2. The ring of this utility model adopts a split design, consisting of a first arc-shaped seat and a second arc-shaped seat connected to a second locking bolt via a fixing lug, which facilitates quick on-site installation and disassembly; the support rod and the support seat are connected by a through hole and a first locking bolt to adjust the height, adapting to different installation positions and tube bundle height requirements, thus improving the structural applicability.

[0018] 3. This utility model sets multiple sets of compression springs between the first arc plate, the second arc plate and the arc seat to form an elastic support structure, which can provide effective buffering when the heat pipe bundle vibrates, reduce the impact of vibration on the structure and extend the service life of the equipment. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is an overall perspective view provided by an embodiment of the present utility model;

[0021] Figure 2 Structural diagram provided for embodiments of this utility model Figure 1 ;

[0022] Figure 3 Structural diagram provided for embodiments of this utility model Figure 2 ;

[0023] Figure 4 A side view provided for an embodiment of this utility model.

[0024] In the diagram: 1. Mounting base; 2. Support base; 3. Cylindrical cavity; 4. Support rod; 5. Through hole; 6. First locking bolt; 7. First arc-shaped seat; 8. Second arc-shaped seat; 9. First arc-shaped plate; 10. First compression spring; 11. Second arc-shaped plate; 12. Second compression spring; 13. Fixing ear; 14. Second locking bolt; 15. Connecting seat; 16. U-shaped groove; 17. Arc-shaped section; 18. Screw; 19. Locking nut; 20. Washer. Detailed Implementation

[0025] 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 some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example

[0027] Referring to the figure, this utility model provides a technical solution: an elastic shock-absorbing support mechanical structure for a waste heat boiler heat pipe bundle, including a mounting base 1. In actual use, mounting holes are provided at the corners of the mounting base 1 so that fixing bolts can be passed through the mounting holes to mount the mounting base 1 to the base surface to be fixed.

[0028] Connecting brackets are installed at both ends of the top of mounting base 1, and a heat pipe bundle (such as...) is provided on the top of the connecting brackets. Figure 1 The two rings (pointed to by the middle arrow A) are used to wrap and fix the heat pipe bundles. They are placed on both sides of the flange connecting the two heat pipe bundles. In actual use, the installation position of the mounting base 1 can be selected according to the installation height of the heat pipe bundles. The mounting base 1 can be installed on the ground or on the top beam or wall of the factory.

[0029] Among them, such as Figure 1 and 2 As shown, the connecting frame includes a support base 2, which is fixed to the end of the mounting base 1. A cylindrical cavity 3 is provided at both ends of the top of the support base 2. A support rod 4 is installed inside the cylindrical cavity 3. The top of the support rod 4 is fixed to the ring. Multiple through holes 5 are provided on the support rod 4 along the length direction of the support rod 4. A first locking bolt 6 is provided on the top of the support base 2. The first locking bolt 6 corresponds to the through holes 5. That is, the distance between the mounting base 1 and the heat pipe bundle is adjustable to improve the adaptability of the support mechanical structure.

[0030] A symmetrical arc-shaped connecting seat 15 is installed on both sides of the outer wall of the ring sleeve. Several U-shaped grooves 16 are arranged at intervals along the outer wall of the connecting seat 15. Several screws 18 are arranged at intervals between two connecting seats 15. The ends of the screws 18 are placed in the U-shaped grooves 16. Two locking nuts 19 are threaded to both ends of the screws 18. The two locking nuts 19 are arranged on both sides of the connecting seat 15. After the ring sleeve is placed on the heat pipe bundle for installation, the screws 18 can be removed and the ends of the screws 18 can be placed in the U-shaped grooves 16 on the two ring sleeves respectively. At this time, the locking nut 19 on the screw 18 will be placed on the side of the connecting seat 15. Then, the locking nut 19 can be tightened to make it fit tightly against the side of the connecting seat 15, thereby securing the screw 18 to the connecting seat 15. This provides support and stability for the heat pipe bundle, especially for the flange position connecting two heat pipe bundles, which reinforces the connection and prevents the flow of flue gas in the heat pipe bundle from causing misalignment between adjacent heat pipe bundles, which could lead to loosening of the bolts on the flange, affecting the connection and sealing strength between the heat pipe bundles.

[0031] Specifically, the U-shaped groove 16 is provided through the outer wall of the connecting seat 15, which allows the screw 18 to be directly inserted into the U-shaped groove 16 from the opening of the U-shaped groove 16, improving the ease of installation of the screw 18, and also making it convenient to place the locking nut 17 on both sides of the connecting seat 15 to tighten the screw 18.

[0032] To improve the tightness of the locking bolt 19 to the screw 18 within the U-shaped groove 16, elastic washers 20 are provided on both sides of the locking nut 19 near the connecting seat 15. The washers 20 are fitted onto the screw 18. As the locking nut 19 moves closer to the connecting seat 15, the washers 20 are squeezed by the locking nut 19, thereby generating an elastic force that reacts to the locking nut 19. This causes the threads of the locking nut 19 to abut against the threads of the screw 18, thus improving the fastening effect of the locking nut 19 on the screw 18.

[0033] Furthermore, such as Figure 3 As shown, arc-shaped cut surfaces 17 are provided on both sides of the port of the U-shaped groove 16 to increase the opening size at the port of the U-shaped groove 16, so that the screw 18 can be placed in the U-shaped groove 16 more easily during installation.

[0034] It should be noted that, as Figure 2 and Figure 4As shown, the ring includes a first arc-shaped seat 7 and a second arc-shaped seat 8 coaxially corresponding to each other. The outer wall of the first arc-shaped seat 7 is fixed to the end of the support rod 4, and both the end of the first arc-shaped seat 7 and the end of the second arc-shaped seat 8 are equipped with fixing ears 13. The two corresponding fixing ears 13 are fixed together by a second locking bolt 14. In addition, the connecting seat 15 is fixed on the outer wall of the corresponding first arc-shaped seat 7 and the outer wall of the second arc-shaped seat 8. That is, during installation, the first arc-shaped seat 7 can be placed on one side of the heat pipe bundle, and then the second arc-shaped seat 8 can be placed on the other side of the heat pipe bundle. Finally, the second locking bolt 14 is used to complete the connection and fixation between the two arc-shaped seats, which improves the convenience of installing the ring on the heat pipe bundle.

[0035] When the arc-shaped seat abuts against the outer wall of the heat pipe bundle, a first arc-shaped plate 9 is coaxially provided on the inner side of the first arc-shaped seat 7. Multiple first compression springs 10 are spaced apart between the first arc-shaped plate 9 and the first arc-shaped seat 7. One end of each first compression spring 10 is fixed to the first arc-shaped plate 9, and the other end is fixed to the first arc-shaped seat 7. A second arc-shaped plate 11 is coaxially provided on the inner side of the second arc-shaped seat 8. Multiple second compression springs 12 are spaced apart between the second arc-shaped plate 11 and the second arc-shaped seat 8. One end of the compression spring 12 is fixed to the second arc-shaped plate 11, and the other end of the second compression spring 12 is fixed to the second arc-shaped seat 8. As the bolts between the arc-shaped seats are tightened, the arc-shaped plate will be fixed tightly against the outer wall of the heat pipe bundle. At this time, the compression spring will also deform as the arc-shaped seat moves toward the heat pipe bundle, which not only ensures the fixing effect of the arc-shaped plate on the heat pipe bundle, but also plays a buffering and shock-absorbing role when the heat pipe bundle vibrates, further improving the fixing effect of the support mechanical structure on the heat pipe bundle.

[0036] It should be noted that heat-insulating elastic rubber plates are installed on the inner side of the first arc plate 9 and the inner side of the second arc plate 11 to reduce the outward transfer of heat after the arc plate comes into contact with the heat pipe bundle.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mechanical structure for elastic shock-absorbing support of a heat-pipe bundle of a waste-heat boiler, comprising a mounting seat (1), characterized in that: A connecting bracket is installed at both ends of the top of the mounting base (1), and a ring is provided at the top of the connecting bracket to wrap and fix the heat pipe bundle. Arc-shaped connecting seats (15) are symmetrically installed on both sides of the outer wall of the ring. Several U-shaped grooves (16) are opened along the outer wall of the connecting seat (15). Several screws (18) are arranged at intervals between the two connecting seats (15). The ends of the screws (18) are placed in the U-shaped grooves (16). Two locking nuts (19) are threaded to both ends of the screws (18). The two locking nuts (19) are arranged on both sides of the connecting seat (15).

2. A mechanical structure for elastic damping support of a heat pipe bundle of a waste heat boiler according to claim 1, characterized in that: On both sides of the locking nut (19) near the connecting seat (15), there are elastic washers (20), which are fitted onto the screw (18).

3. A mechanical structure for elastic damping support of a heat pipe bundle of a waste heat boiler according to claim 1, characterized in that: Arc-shaped cut surfaces (17) are provided on both sides of the port of the U-shaped groove (16).

4. A mechanical structure for elastic damping support of a heat pipe bundle of a waste heat boiler according to claim 1, characterized in that: The connecting frame includes a support base (2), which is fixed to the end of the mounting base (1). A cylindrical cavity (3) is provided at both ends of the top of the support base (2). A support rod (4) is built into the cylindrical cavity (3). The top of the support rod (4) is fixed to the ring. Multiple through holes (5) are provided on the support rod (4) along the length direction of the support rod (4). A first locking bolt (6) is provided on the top of the support base (2). The first locking bolt (6) corresponds to the through hole (5).

5. A mechanical structure for elastic damping support of a heat pipe bundle of a waste heat boiler according to claim 4, characterized in that: The ring includes a first arc-shaped seat (7) and a second arc-shaped seat (8) that are coaxially corresponding. The outer wall of the first arc-shaped seat (7) is fixed to the end of the support rod (4), and the ends of the first arc-shaped seat (7) and the second arc-shaped seat (8) are both equipped with fixing ears (13). The two corresponding fixing ears (13) are fixed together by a second locking bolt (14). In addition, the connecting seat (15) is fixed on the outer wall of the corresponding first arc-shaped seat (7) and the outer wall of the second arc-shaped seat (8).

6. A mechanical structure for elastic damping support of a heat pipe bundle of a waste heat boiler according to claim 5, characterized in that: A first arc plate (9) is coaxially provided on the inner side of the first arc plate (7). A plurality of first compression springs (10) are arranged at intervals between the first arc plate (9) and the first arc plate (7). One end of the first compression spring (10) is fixed on the first arc plate (9), and the other end of the first compression spring (10) is fixed on the first arc plate (7). A second arc plate (11) is coaxially provided on the inner side of the second arc seat (8). A plurality of second compression springs (12) are arranged at intervals between the second arc plate (11) and the second arc seat (8). One end of the second compression spring (12) is fixed on the second arc plate (11), and the other end of the second compression spring (12) is fixed on the second arc seat (8).

7. A mechanical structure for elastic damping support of a heat pipe bundle of a waste heat boiler according to claim 6, characterized in that: Heat-insulating elastic rubber sheets are installed on the inner side of the first arc plate (9) and the inner side of the second arc plate (11).

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