Assembly type boiler damping guide device

Abstract

The invention discloses an assembly type boiler damping guide device which is used for connecting a rigid beam and a framework beam and comprises a beam connector, connecting rods and an energy dissipation section, the energy dissipation section comprises an outer sleeve, an inner sleeve, a friction plate and a spring, and the outer end of the outer sleeve and the outer end of the inner sleeve are detachably connected with the second ends of the two connecting rods correspondingly; the inner end of the inner sleeve is inserted into the outer sleeve and connected with the outer sleeve in a sliding mode, the friction plate is arranged between the outer sleeve and the inner sleeve and used for providing damping force for sliding of the inner sleeve relative to the outer sleeve, and the two ends of the spring are connected with the outer sleeve and the inner sleeve respectively. By arranging the outer sleeve, the inner sleeve and a built-in spring-friction plate composite damping structure, kinetic energy generated by operation of the boiler can be effectively absorbed, the fatigue damage degree of connecting parts is reduced, and then the service life of equipment is prolonged. And meanwhile, modularization of the guide device is achieved, and replacement is convenient.

Description

Technical Field

[0001] This invention relates to the field of prefabricated boiler technology, and more specifically to a damping guide device for prefabricated boilers. Background Technology

[0002] As a core piece of equipment in modern industrial production and energy systems, the safe, stable, and efficient operation of boilers is of paramount importance. In the boiler structural system, key components such as membrane water-cooled walls are reinforced with numerous rigid beams to withstand the complex operating conditions of high temperature and high pressure within the furnace. The connection between the rigid beams and the steel structure is typically achieved using guiding devices. These devices not only effectively transfer loads such as earthquakes and wind to the steel structure but also ensure that the rigid beams can freely expand and contract in a predetermined direction after being heated, while effectively restraining their lateral displacement to prevent excessive vibration and deformation during operation.

[0003] Currently, traditional rigid beam guide devices for boilers mostly employ structural steel, sliding plates, or simple rollers. While these structures theoretically allow for bidirectional (or unidirectional) sliding, they reveal numerous inherent drawbacks in practical applications:

[0004] Lack of effective damping and buffering mechanisms: When the boiler starts up or stops or the load changes, the rigid beam will experience frequent start-stop and reciprocating motions. Traditional guide devices, lacking damping and buffering mechanisms, cannot effectively absorb the kinetic energy generated by these movements, resulting in the impact force being directly transmitted to the steel structure, generating noise, and accelerating fatigue damage to connecting components, thus affecting the service life of the equipment.

[0005] Installation and commissioning are complex and require stringent precision: traditional guide devices are typically integrally welded or rigidly connected structures, and their installation positions and gaps need to be precisely adjusted on-site. Given the large size of the boiler structure and limited installation space, ensuring uniform gaps between all guide devices and the rails is extremely difficult. Insufficient installation precision will directly exacerbate the aforementioned wear and jamming problems.

[0006] Inconvenient maintenance and replacement: Once the guide device is worn or damaged, the traditional welded or integral structure often needs to be cut, ground and re-welded, which is a lot of work, time-consuming and costly, seriously affecting the normal maintenance cycle of the boiler. Summary of the Invention

[0007] The purpose of this invention is to provide a prefabricated boiler damping and guiding device to solve the problems mentioned in the background art.

[0008] To solve the above-mentioned technical problems, the present invention provides a prefabricated boiler damping and guiding device for connecting a rigid beam and a frame beam. It includes beam joints, connecting rods, and an energy-dissipating section. There are two beam joints and two connecting rods. The first ends of the two beam joints are fixedly connected to the rigid beam and the frame beam, respectively. The first ends of the two connecting rods are pinned to the second ends of the corresponding beam joints. The energy-dissipating section is disposed between the two connecting rods and includes an outer sleeve, an inner sleeve, a friction plate, and a spring. The outer ends of the outer sleeve and the inner sleeve are detachably connected to the second ends of the two connecting rods, respectively. The inner end of the inner sleeve is inserted into the outer sleeve and slidably connected to it. The friction plate is disposed between the outer sleeve and the inner sleeve to provide damping force for the sliding of the inner sleeve relative to the outer sleeve. The two ends of the spring are connected to the outer sleeve and the inner sleeve, respectively.

[0009] Furthermore, the beam joint includes a clamping plate and a pin, the clamping plate being fixedly connected to the rigid beam or the frame beam, and the rigid beam or the frame beam being connected to the corresponding connecting rod via the pin.

[0010] Furthermore, the beam joint also includes stiffening ribs, the two ends of which are fixedly connected to the clamping plate and the corresponding rigid beam or the frame beam, respectively.

[0011] Furthermore, one end of the energy-consuming section is provided with a steel section, which is detachably connected to the energy-consuming section and the corresponding connecting rod.

[0012] Furthermore, the two connecting rods, the energy-consuming section, and the steel section are all connected by a first high-strength bolt.

[0013] Furthermore, end plates are fixedly installed at the second ends of the two connecting rods, at both ends of the energy-consuming section, and at both ends of the steel profile, and adjacent end plates are connected by the first high-strength bolts.

[0014] Furthermore, the outer sleeve has two symmetrically arranged and longitudinally penetrating mounting grooves, and the friction plate is an arc-shaped friction plate, which is detachably connected to the outer sleeve.

[0015] Furthermore, there are two arc-shaped friction plates, with both ends passing through the two mounting grooves and located outside the outer sleeve. The two ends of the two arc-shaped friction plates are connected by second high-strength bolts. The middle part of the arc-shaped friction plate is located inside the outer sleeve.

[0016] Furthermore, it also includes a fixed buckle and a movable buckle. The fixed buckle is sleeved on the outer sleeve and fixedly connected to the outer sleeve, and the movable buckle is sleeved on the outer sleeve and engages with the inner wall of the mounting groove.

[0017] The beneficial effects of this invention are as follows: By setting up an outer sleeve, an inner sleeve, and a built-in spring-friction plate composite damping structure, this invention can effectively absorb the kinetic energy generated by boiler operation, reduce the fatigue damage of connecting components, and thus extend the service life of the equipment. Simultaneously, the detachable connection of the energy-consuming section realizes the modularity of this composite damping structure, avoiding welding operations in confined spaces at high altitudes. This composite damping structure is easy to replace after damage; after bearing loads, only the energy-consuming section needs to be replaced to restore normal operation, without the need for cutting, grinding, or re-welding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of an embodiment of the present invention.

[0019] Figure 2 This is a top view of the structure according to an embodiment of the present invention.

[0020] Figure 3 This is a schematic diagram of the unfolded outer sleeve structure according to an embodiment of the present invention.

[0021] Figure 4 a, Figure 4 b are top and front views of the movable buckle in an embodiment of the present invention, respectively.

[0022] Figure 5 a, Figure 5 b are schematic diagrams of the arc-shaped friction plate in the embodiment of the present invention, showing its top and front views respectively.

[0023] The components include: 1. Rigid beam; 2. Frame beam; 3. Beam joint; 4. Connecting rod; 5. Energy dissipation section; 6. Structural steel; 7. First high-strength bolt; 8. End plate;

[0024] 31. Clamping plate; 32. Stiffening rib; 33. Pin; 51. Arc-shaped friction plate; 52. Spring; 53. Outer sleeve; 54. Inner sleeve; 55. Fixed buckle; 56. Movable buckle. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely one embodiment of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0027] In the following description, references to "an embodiment," "an embodiment," "an example," "example," etc., indicate that the described embodiment or example may include a particular feature, structure, characteristic, property, element, or limitation, but not every embodiment or example necessarily includes that particular feature, structure, characteristic, property, element, or limitation. Furthermore, the repeated use of the phrase "an embodiment according to this application," while possibly referring to the same embodiment, does not necessarily refer to the same embodiment.

[0028] like Figure 1-5 As shown, this invention discloses a prefabricated boiler damping and guiding device for connecting a rigid beam 1 and a frame beam 2. It includes beam joints 3, connecting rods 4, and an energy-dissipating section 5. There are two beam joints 3 and two connecting rods 4. The first ends of the two beam joints 3 are fixedly connected to the rigid beam 1 and the frame beam 2, respectively. The first ends of the two connecting rods 4 are pinned to the second ends of the corresponding beam joints 3. The energy-dissipating section 5 is disposed between the two connecting rods 4. The energy-dissipating section 5 includes an outer sleeve 53, an inner sleeve 54, a friction plate, and a spring 52. The outer ends of the outer sleeve 53 and the inner sleeve 54 are detachably connected to the second ends of the two connecting rods 4, respectively. The inner end of the inner sleeve 54 is inserted into the outer sleeve 53 and slidably connected to it. The friction plate is disposed between the outer sleeve 53 and the inner sleeve 54 to provide damping force for the sliding of the inner sleeve 54 relative to the outer sleeve 53. The spring 52 is disposed between the outer sleeve 53 and the inner sleeve 54. In this embodiment, when installing the outer sleeve 53 and the inner sleeve 54, the spring 52 is directly placed inside the outer sleeve 53, and the two ends of the spring 52 are in contact with the outer sleeve 53 and the inner sleeve 54 respectively.

[0029] When the boiler is subjected to horizontal forces such as wind loads and seismic loads, the force is transmitted from the rigid beam 1 through the first beam joint 3. Through the pin-connected rotating joint, the force is converted into tensile or compressive force along the axis of the connecting rod 4. The force is then transmitted through the connecting rod 4 to the outer sleeve 53 or inner sleeve 54 of the energy-dissipating section 5. Subsequently, the force is transmitted through the overall structure of the energy-dissipating section 5 to the connecting rod 4 and beam joint 3 on the other side, and finally reliably transmitted to the frame beam 2 and the entire boiler steel structure, ensuring reliable load transfer.

[0030] Since both beam joints (3 points) are pin-connected, the connecting rod 4 can undergo slight angular deflection, automatically compensating for misalignment caused by installation errors or deformation, and avoiding harmful bending moments. The axial movement of the connecting rod 4 is ultimately converted into the axial sliding of the inner sleeve 54 relative to the outer sleeve 53, ensuring that the rigid beam 1 can only freely extend and retract in the direction set by the device (i.e., the axial direction of the inner sleeve 54), while its displacement in other directions is strictly restricted, achieving a precise "guiding" function. The relative sliding between the inner sleeve 54 and the outer sleeve 53 compresses or stretches the spring 52. The spring 52 absorbs and temporarily stores a portion of the kinetic energy through its own elastic deformation, playing a role in initial buffering and smoothing the impact force.

[0031] The friction plate, positioned between the outer sleeve 53 and the inner sleeve 54, forms a tight contact with the inner sleeve 54 under preload. When the inner sleeve 54 slides, a significant sliding friction force is generated between the friction plate and the inner sleeve 54. This friction force continuously performs work, directly converting mechanical kinetic energy into heat energy, which is then dissipated into the environment, thus consuming a large amount of vibration energy.

[0032] The combination of "spring 52 buffer" and "friction energy dissipation" forms a highly efficient composite damping system. Spring 52 reduces the peak impact value, while the friction plate provides continuous and stable energy dissipation, together significantly reducing harmful vibration and impact energy.

[0033] This invention, through the design of an outer sleeve 53, an inner sleeve 54, and a built-in spring 52-friction plate composite damping structure, effectively absorbs the kinetic energy generated during boiler operation, reduces fatigue damage to connecting components, and thus extends the service life of the equipment. Simultaneously, the detachable connection of the energy-consuming section 5 achieves modularity of the composite damping structure, avoiding welding operations in confined spaces at high altitudes. This composite damping structure is easy to replace after damage; after bearing loads, only the energy-consuming section 5 needs to be replaced to restore normal operation, without the need for cutting, grinding, or re-welding.

[0034] In one embodiment, the beam joint 3 includes a clamping plate 31 and a pin 33. The clamping plate 31 is fixedly connected to the rigid beam 1 or the frame beam 2, and the rigid beam 1 or the frame beam 2 is connected to the corresponding connecting rod 4 via the pin 33. In this embodiment, the clamping plate 31 is welded to the rigid beam 1 or the frame beam 2 to introduce or export force from the main structure. The pin 33 passes through a hole on the clamping plate 31 and a hole at the end of the connecting rod 4 to connect the two.

[0035] The clamping plate 31 can be pre-welded to the rigid beam 1 or frame beam 2 at the factory or on the ground. During on-site installation, the worker only needs to lift the entire damping guide device with the connecting rod 4, align the hole at the end of the connecting rod 4 with the hole on the clamping plate 31, insert the pin 33, and fix it. This process requires almost no precision measurement or adjustment, making it extremely friendly for working at heights. Even if there is a slight misalignment, the pin 33 can be inserted with a slight tilt, and the subsequent hinge function will automatically compensate for this misalignment.

[0036] In one embodiment, the beam joint 3 further includes stiffening ribs 32, with both ends of the stiffening ribs 32 fixedly connected to the clamping plate 31 and the corresponding rigid beam 1 or frame beam 2, respectively. In this embodiment, the two ends of the stiffening ribs 32 are welded to the clamping plate 31 and the corresponding rigid beam 1 or frame beam 2, forming a triangular stable support between the clamping plate 31 and the main structure. This distributes the concentrated force at the pin 33 more evenly and directly to the web or flange of the rigid beam 1 or frame beam 2 through the inclined surface of the stiffening ribs 32, greatly improving the bending stiffness and shear strength at the root of the clamping plate 31.

[0037] In one embodiment, a steel section 6 is provided at one end of the energy-consuming section 5, and the steel section 6 is detachably connected to both the energy-consuming section 5 and the corresponding connecting rod 4. The steel section 6 (usually an I-beam, H-beam, or channel steel) has a high section modulus and is an excellent bending and compressive strength component. Placing it between the energy-consuming section 5 and a connecting rod 4 ensures that all reaction forces of the energy-consuming section 5 can be effectively and stably transmitted through the steel section 6, preventing additional vibration or deformation due to insufficient support stiffness and guaranteeing stable damping performance. Furthermore, its length can be precisely cut during manufacturing according to different boiler heights or installation spacings. This allows the entire guiding device to flexibly adapt to different span requirements between the rigid beam 1 and the frame beam 2 by selecting steel sections 6 of different lengths, without changing the design of core modules such as the energy-consuming section 5 and the connecting rod 4, greatly expanding the device's versatility.

[0038] In one embodiment, the two connecting rods 4, the energy-dissipating section 5, and the steel section 6 are all connected by a first high-strength bolt 7. During on-site installation, workers only need to align the bolt holes, insert, and tighten the first high-strength bolt 7 to complete the assembly.

[0039] In one embodiment, end plates 8 are fixedly installed at the second ends of the two connecting rods 4, both ends of the energy-consuming section 5, and both ends of the steel section 6, with adjacent end plates 8 connected by first high-strength bolts 7. In this embodiment, six end plates 8, all of which are steel plates, are provided and welded to the second ends of the two connecting rods 4, both ends of the energy-consuming section 5, and both ends of the steel section 6, respectively. When replacing the energy-consuming section 5 and the steel section 6, as long as the interface of its end plate 8 is consistent with the existing one, the old module can be directly replaced, greatly simplifying the design, manufacturing, storage, and installation process.

[0040] In one embodiment, the outer sleeve 53 has two symmetrically arranged and longitudinally extending mounting slots. The friction plate is an arc-shaped friction plate 51, which is detachably connected to the outer sleeve 53. When the arc-shaped friction plate 51 wears to its limit, it is not necessary to replace the entire expensive energy-consuming section 5 or the outer sleeve 53. Simply disconnecting the arc-shaped friction plate 51 from the outer sleeve 53 allows the old arc-shaped friction plate 51 to be pulled out of the mounting slot and replaced with a new one.

[0041] In one embodiment, there are two arc-shaped friction plates 51. The two ends of each arc-shaped friction plate 51 pass through two mounting slots and are located outside the outer sleeve 53. The two ends of the two arc-shaped friction plates 51 are connected by second high-strength bolts. The middle portion of each arc-shaped friction plate 51 is located inside the outer sleeve 53.

[0042] The main body of the arc-shaped friction plate 51 is C-shaped, with its outer middle conforming to the interior of the outer sleeve 53, and its inner middle gripping the inner sleeve 54. Both ends extend beyond the outer sleeve 53. The two ends of the arc-shaped friction plates 51 are connected by a second high-strength bolt. When the second high-strength bolt is tightened, the extended ends of the two arc-shaped friction plates 51 are pulled closer, thereby generating a large radial clamping force on the inner sleeve 54 located inside. The operator can change the clamping force by adjusting the torque of the second high-strength bolt, thus linearly and precisely adjusting the magnitude of the generated damping force. Furthermore, the two friction plates are externally connected by the second high-strength bolt, forming a complete annular constraint structure. Even if the inner sleeve 54 is subjected to a large impact, this structure remains stable and is not easily disintegrated.

[0043] In one embodiment, the system further includes a fixed buckle 55 and a movable buckle 56. The fixed buckle 55 is sleeved on and fixedly connected to the outer sleeve 53, while the movable buckle 56 is sleeved on the outer sleeve 53 and engages with the inner wall of the mounting groove. In this embodiment, the fixed buckle 55 is welded to the outer sleeve 53, providing an immovable and robust load-bearing fulcrum. The movable buckle 56 is annular, with symmetrical protrusions inside the annulus, and a corresponding groove on the mounting groove of the outer sleeve 53. After the arc-shaped friction piece 51 is in place, the movable buckle 56 is sleeved onto the outer sleeve 53 from the outside. The protrusions on the inner side of the movable buckle 56 engage in the groove, preventing any possible path for the arc-shaped friction piece 51 to loosen outward along the mounting groove.

[0044] Embodiments of the present invention include a beam joint 3, a connecting rod 4, an energy-dissipating section 5, a structural steel 6, a first high-strength bolt 7, a second high-strength bolt, and an end plate 8. The beam joint 3 consists of a clamping plate 31, stiffening ribs 32, and pins 33. The clamping plate 31 and stiffening ribs 32 are directly welded to the rigid beam 1 or the frame beam. Six end plates 8 are provided, all of which are steel plates, and are respectively welded to the second ends of the two connecting rods 4, the two ends of the energy dissipation section 5, and the two ends of the steel section 6. Adjacent end plates 8 are connected by the first high-strength bolts 7. The energy dissipation section 5 includes an arc-shaped friction plate 51, a spring 52, an outer sleeve 53, an inner sleeve 54, a fixed buckle 55, and a movable buckle 56. The outer ends of the outer sleeve 53 and the inner sleeve 54 are respectively welded to the corresponding end plates 8. The spring 52 is placed between the outer sleeve 53 and the inner sleeve 54. The fixed buckle 55 is sleeved on the outer sleeve 53 and welded to the outer sleeve 53. The two arc-shaped friction plates 51 pass through the reserved installation groove of the outer sleeve 53 and are pre-tightened by the second high-strength bolts on both sides. After the arc-shaped friction plate 51 is installed in place, the movable buckle 56 is passed through the reserved slot of the outer sleeve 53 and fixed to the outer sleeve 53. The two ends of the steel section 6 are welded to the corresponding end plates 8, and connected to the energy-consuming section 5 and the beam joint 3 respectively by the first high-strength bolts 7. This guide device uses a bolted connection method to achieve modular structure, avoiding welding operations in confined spaces at high altitudes. Furthermore, this guide device is easy to replace after damage; after bearing load, only the damping module needs to be replaced to restore normal operation, without the need for cutting, grinding, or re-welding. At the same time, the damping buffer mechanism of this guide device can effectively absorb the kinetic energy generated by the boiler operation, reducing the fatigue damage of connecting parts and thus extending the service life of the equipment.

[0045] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A damping and guiding device for a prefabricated boiler, used to connect a rigid beam and a frame beam, characterized in that: The system includes beam joints, connecting rods, and energy-dissipating sections. There are two beam joints and two connecting rods. The first ends of the two beam joints are fixedly connected to the rigid beam and the frame beam, respectively. The first ends of the two connecting rods are pinned to the second ends of the corresponding beam joints. The energy-dissipating section is located between the two connecting rods and includes an outer sleeve, an inner sleeve, a friction plate, and a spring. The outer ends of the outer sleeve and the inner sleeve are detachably connected to the second ends of the two connecting rods, respectively. The inner end of the inner sleeve is inserted into the outer sleeve and slidably connected to it. The friction plate is located between the outer sleeve and the inner sleeve to provide damping force for the sliding of the inner sleeve relative to the outer sleeve. The spring is located between the outer sleeve and the inner sleeve.

2. The assembled boiler damping and guiding device according to claim 1, characterized in that: The beam joint includes a clamping plate and a pin. The clamping plate is fixedly connected to the rigid beam or the frame beam. The rigid beam or the frame beam is connected to the corresponding connecting rod through the pin.

3. The assembled boiler damping and guiding device according to claim 2, characterized in that: The beam joint also includes stiffening ribs, the two ends of which are fixedly connected to the clamping plate and the corresponding rigid beam or the frame beam, respectively.

4. The assembled boiler damping and guiding device according to claim 1, characterized in that: One end of the energy-consuming section is provided with a steel section, which is detachably connected to the energy-consuming section and the corresponding connecting rod.

5. The assembled boiler damping and guiding device according to claim 4, characterized in that: The two connecting rods, the energy-consuming section, and the steel section are all connected by a first high-strength bolt.

6. The prefabricated boiler damping and guiding device according to claim 5, characterized in that: End plates are fixedly installed at the second ends of the two connecting rods, at both ends of the energy dissipation section, and at both ends of the steel profile. Adjacent end plates are connected by the first high-strength bolt.

7. The assembled boiler damping and guiding device according to claim 1, characterized in that: The outer sleeve has two symmetrically arranged and longitudinally penetrating mounting slots. The friction plate is an arc-shaped friction plate, which is detachably connected to the outer sleeve.

8. The assembled boiler damping guide device according to claim 7, characterized in that: The number of arc-shaped friction plates is two, with both ends of each arc-shaped friction plate passing through the two mounting grooves and located outside the outer sleeve. The two ends of the two arc-shaped friction plates are connected by second high-strength bolts. The middle part of each arc-shaped friction plate is located inside the outer sleeve.

9. A prefabricated boiler damping and guiding device according to claim 7, characterized in that: It also includes a fixed buckle and a movable buckle. The fixed buckle is sleeved on the outer sleeve and fixedly connected to the outer sleeve. The movable buckle is sleeved on the outer sleeve and engages with the inner wall of the mounting groove.

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