Waste heat boiler header

Abstract

The invention discloses a waste heat boiler header which comprises a flue gas channel defined by first side walls and second side walls, the two first side walls are oppositely arranged, a plurality of heat exchange pipes are arranged between the two first side walls, the two second side walls are oppositely arranged, each heat exchange pipe comprises a side pipe adjacent to the corresponding second side wall, and the side pipes are arranged between the two second side walls. The side pipe is provided with a first smoke baffle, and the first smoke baffle and the second side wall are arranged in a spaced mode. And the vibration assembly is used for applying vibration force to the first smoke barrier. The waste heat boiler header is reasonable in design, the smoke baffle is arranged in a vibration mode, and particles attached to the surface of the smoke baffle are vibrated off.

Description

Technical Field

[0001] The present invention relates to the technical field of flue gas waste heat recovery, and in particular to a waste heat boiler header. Background Art

[0002] Flue gas is the main way for general energy-consuming equipment to waste energy. With the continuous development of energy-saving work, people use some equipment to recover flue gas waste heat to achieve the purpose of energy conservation and emission reduction. Flue gas waste heat recovery equipment mainly converts the heat carried by flue gas into usable heat through some kind of heat exchange method.

[0003] A common heat conversion method is to absorb the heat of high-temperature flue gas through the heat exchange tubes in the header to heat the water in the heat exchange tubes, thereby reducing the exhaust temperature of the flue gas, saving energy, and improving efficiency. It is widely used in industrial production processes.

[0004] To prevent the formation of flue gas corridors in the waste heat boiler header (where flue gas passes directly and rapidly between the heat exchange tubes and the side walls of the header, reducing the utilization rate of the flue gas heat and causing the flue gas to escape quickly), smoke baffles are usually welded to the outermost heat exchange tubes to block the rising flue gas. Because the high temperature of the flue gas causes thermal expansion of the smoke baffle, a residual gap is provided between the smoke baffle and the side wall to prevent the smoke baffle from squeezing the side wall. Since the flue gas contains particles, there is a phenomenon that particles adhere to the smoke shield, so that the remaining gap is filled with particles. When the smoke shield is heated again, it will squeeze the side wall, causing the side wall and heat exchange tube to be subjected to radial force, causing the heat exchange tube to be misaligned or even fall off.

[0005] Therefore, it is necessary to improve the waste heat boiler header in the prior art. Summary of the Invention

[0006] The purpose of the present invention is to overcome the defects in the prior art and provide a waste heat boiler header, wherein the smoke baffle can vibrate to shake off particles attached to the surface of the smoke baffle.

[0007] In order to achieve the above-mentioned technical effects, the technical solution of the present invention is: a waste heat boiler header, comprising a flue gas channel enclosed by a first side wall and a second side wall, the two first side walls being arranged opposite to each other, and a plurality of heat exchange tubes being arranged between them, the two second side walls being arranged opposite to each other, the heat exchange tubes comprising side tubes adjacent to the second side walls, the side tubes being provided with a first smoke baffle, and the first smoke baffle being spaced apart from the second side wall; and also comprising a vibration component for applying vibration force to the first smoke baffle.

[0008] According to one embodiment of the present invention, the side tube is fixedly provided with a mounting plate, and several mounting plates are provided along the axial direction of the side tube. The first smoke baffle is rotatably connected to the mounting plate, and the vibration assembly is provided between the mounting plate and the first smoke baffle.

[0009] According to one embodiment of the present invention, the mounting plate is fixedly provided with a spring seat, and the vibration assembly includes a compression spring arranged between the first smoke shield and the spring seat, the two ends of the compression spring are respectively fixedly connected to the first smoke shield and the spring seat, and the elastic direction of the compression spring is arranged to be inclined downward.

[0010] According to one embodiment of the present invention, the first smoke deflector is fixedly provided with a rotating shaft, the rotating shaft is spaced apart from the first smoke deflector, and the rotating shaft passes through the mounting plate.

[0011] According to one embodiment of the present invention, a second smoke shield is fixedly provided on the inner wall of the second side wall, and a second smoke shield is provided above each of the first smoke shields, and the projections of the first smoke shield and the second smoke shield on the horizontal plane are provided with an overlapping portion.

[0012] According to one embodiment of the present invention, the second smoke shield is provided with an impact portion for impacting the first smoke shield.

[0013] According to one embodiment of the present invention, when the compression spring is in a natural state, the first smoke baffle is arranged horizontally.

[0014] According to one embodiment of the present invention, the second smoke baffle is provided with a smoke guiding arc surface, which is used to guide the smoke at the edge of the smoke channel to the inside thereof; a reinforcing rib is fixedly provided between the second smoke baffle and the second side wall.

[0015] According to one embodiment of the present invention, the second smoke shield is provided with a plurality of ventilation holes, and the ventilation holes of two upper and lower adjacent second smoke shields are staggered.

[0016] According to one embodiment of the present invention, the first smoke shield is provided with a first curved surface that matches the second smoke shield.

[0017] The advantages and beneficial effects of the present invention are as follows: the waste heat boiler header structure of the present invention is reasonably designed, and the vibration of the first smoke baffle is achieved by arranging a vibration component on the first smoke baffle, so that the particles attached to the surface of the first smoke baffle are shaken off, thereby avoiding the residual gap between the first smoke baffle and the second side wall being blocked by particles, causing the first smoke baffle to squeeze the side tube when it expands due to heat; the design of the second smoke baffle not only avoids the formation of a smoke corridor due to the residual gap, but also plays the role of a collision plate. The first smoke baffle hits the second smoke baffle, which can cause the particles attached to the surface of the first smoke baffle to fall off. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of an embodiment of a waste heat boiler header of the present invention; Figure 2 yes Figure 1 Explosion diagram of Figure 3 yes Figure 1 sectional view of Figure 4 is a structural diagram of the connection between the first smoke baffle and the mounting base; Figure 5 is a schematic diagram of a state in which the first smoke deflector and the second smoke deflector collide with each other; Figure 6 yes Figure 3 A magnified schematic diagram of point A in the middle; Figure 7 is a cross-sectional view of another embodiment of a waste heat boiler header of the present invention; Figure 8 2 is a schematic structural diagram of the second smoke baffle; Figure 9 yes Figure 8 sectional view of In the figure: 1. first side wall; 2. second side wall; 3. heat exchange tube; 31. side tube; 4. first smoke deflector; 41. rotating shaft; 42. first arc surface; 5. mounting plate; 51. spring seat; 6. compression spring; 7. second smoke deflector; 71. impact part; 72. smoke guide arc surface; 73. reinforcing rib; 74. vent. DETAILED DESCRIPTION

[0019] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0020] In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "back," "left," "right," "horizontal," "vertical," "top," and "outer" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations of the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Example

[0021] like Figure 1-7 As shown, the waste heat boiler header of the embodiment includes a flue gas channel enclosed by a first side wall 1 and a second side wall 2. The two first side walls 1 are arranged opposite to each other, and a plurality of heat exchange tubes 3 are arranged between them. The two second side walls 2 are arranged opposite to each other, and the heat exchange tubes 3 include side tubes 31 adjacent to the second side walls 2. The side tubes 31 are provided with a first smoke baffle 4, and the first smoke baffle 4 is spaced apart from the second side wall 2; and a vibration component for applying vibration force to the first smoke baffle 4 is also included.

[0022] This design avoids structural damage caused by particle accumulation: vibration is used to make attached particles fall off, preventing particles from clogging the gap, thereby preventing the first smoke baffle from squeezing the second side wall and side tube when it expands due to heat, reducing the risk of structural deformation, dislocation or even falling off.

[0023] The core function of the first smoke baffle is to prevent the smoke from flowing quickly through the gap between the side tube and the second side wall, forcing more smoke to contact the heat exchange tube and improve the heat exchange effect.

[0024] If particles accumulate on the surface of the first smoke deflector, it can affect its smoke-blocking function and even indirectly cause abnormal smoke flow paths. The vibration component can maintain the normal smoke-blocking function of the first smoke deflector by clearing particles, ensuring sufficient heat exchange between the heat exchange tubes and the smoke, and stabilizing the waste heat recovery efficiency.

[0025] Extending equipment life: Particle accumulation can not only cause structural compression but also lead to localized wear and corrosion of smoke baffles and heat exchange tubes due to long-term adhesion. Vibrating components promptly remove particles, reducing this type of wear and tear, indirectly extending the life of the header and reducing maintenance and replacement costs.

[0026] According to one embodiment of the present invention, the side tube 31 is fixedly provided with a mounting plate 5, and several mounting plates 5 are provided along the axial direction of the side tube 31. The first smoke baffle 4 is rotatably connected to the mounting plate 5, and the vibration component is provided between the mounting plate 5 and the first smoke baffle 4.

[0027] This design ensures the stability of the vibration component: the vibration component is arranged between the mounting plate and the first smoke shield. This layout allows the force of the vibration component (such as the compression spring) to act directly on the first smoke shield, ensuring efficient transmission of the vibration force, so that the first smoke shield obtains sufficient vibration amplitude and effectively shakes off the particles attached to the surface.

[0028] The mounting plate provides a stable mounting base for the vibration component, ensuring the continuity of the vibration function.

[0029] The mounting plate is fixed on the side tube, which not only utilizes the structural stability of the side tube, but also distributes the weight of the smoke baffle and the vibration component to the side tube, avoiding excessive load-bearing of the local structure.

[0030] According to one embodiment of the present invention, the mounting plate 5 is fixedly provided with a spring seat 51, and the vibration assembly includes a compression spring 6 arranged between the first smoke baffle 4 and the spring seat 51, and the two ends of the compression spring 6 are respectively fixedly connected to the first smoke baffle 4 and the spring seat 51, and the elastic direction of the compression spring 6 is arranged to be inclined downward.

[0031] This design utilizes passive vibration caused by flue gas impact, resulting in a simple structure that avoids the need for a vibration motor. It also efficiently transmits vibration force, enhancing the cleaning effect. The compression spring's ends are fixedly connected to the first smoke deflector and the spring seat, respectively, applying elastic force directly to the first smoke deflector, ensuring lossless transmission of vibration force. When flue gas flows, equipment operation generates slight vibrations, or the first smoke deflector is subjected to force, the compression spring elastically deforms and resets, driving the first smoke deflector to swing back and forth, effectively shaking off particles adhering to the surface.

[0032] Adapting structural stability and extending component life: The spring seat is fixed to the mounting plate, providing a stable force fulcrum for the compression spring, preventing the compression spring from deflecting or loosening due to unstable installation during long-term elastic deformation, and ensuring the long-term and effective operation of the vibration component.

[0033] Compatible with the overall functional design and improved operational reliability: This setting does not occupy the main space of the flue gas channel, will not hinder the flow of flue gas, and ensures that the heat exchange tubes can absorb the flue gas heat normally.

[0034] According to one embodiment of the present invention, the first smoke deflector 4 is fixedly provided with a rotating shaft 41 . The rotating shaft 41 is spaced apart from the first smoke deflector 4 , and the rotating shaft 41 passes through the mounting plate 5 .

[0035] This design enables flexible vibration of the first smoke deflector: a rotating shaft is inserted into the mounting plate, creating a stable rotational connection between the first smoke deflector and the mounting plate via the rotating shaft, providing a reliable fulcrum for the first smoke deflector's vibration. When the compression spring applies force to the first smoke deflector, it rotates flexibly around the rotating shaft, generating a reciprocating oscillating vibration, effectively shaking off particles adhering to the surface.

[0036] According to one embodiment of the present invention, a second smoke baffle 7 is fixedly provided on the inner wall of the second side wall 2, and a second smoke baffle 7 is provided above each of the first smoke baffles 4, and the projections of the first smoke baffles 4 and the second smoke baffles 7 on the horizontal plane are provided with an overlapping portion.

[0037] This design avoids the formation of smoke corridors and improves heat exchange efficiency: there is a gap between the first smoke baffle and the second side wall (reserved space for thermal expansion). If the gap is not blocked, it can easily become a "corridor" for rapid smoke circulation, causing the smoke to escape before it has fully exchanged heat with the heat exchange tubes.

[0038] The second smoke baffle is arranged above the first smoke baffle, and the projections of the two on the horizontal plane have an overlapping part. The second smoke baffle can fill the gap between the first smoke baffle and the second side wall by blocking, blocking the path for the smoke to flow quickly through the gap, forcing the smoke to flow more through the heat exchange tube area, ensuring sufficient heat exchange between the heat exchange tube and the smoke, and improving the waste heat recovery efficiency.

[0039] Provide collaborative support for dust cleaning and enhance the particle removal effect: Combined with the characteristics of the first smoke baffle in the overall design that can vibrate through the vibration component, the position of the second smoke baffle provides a reasonable space coordination for the vibration of the first smoke baffle.

[0040] The design of the projected overlapping portion enables the first smoke shield to more easily form a positional association with the second smoke shield during vibration, providing a basis for the collision cleaning action of the two, and further assisting in shaking off particles on the surface of the first smoke shield.

[0041] According to one embodiment of the present invention, the second smoke shield 7 is provided with an impact portion 71 for impacting the first smoke shield 4 .

[0042] This design enhances particle removal and improves cleaning efficiency: The impact portion provides a clear impact target for the first smoke deflector. When the first smoke deflector swings under the action of a vibrating component (such as a compression spring), it regularly strikes the impact portion of the second smoke deflector. The impact force generated by this collision is transmitted through the first smoke deflector to its surface, shaking off stubborn particles that would be difficult to dislodge through simple vibration.

[0043] The setting of the impact part makes the vibration of the first smoke deflector more targeted: the reaction force generated after the impact will further drive the first smoke deflector to swing in the opposite direction, enhance its vibration amplitude and frequency, and form a continuous reciprocating motion.

[0044] According to one embodiment of the present invention, when the compression spring 6 is in a natural state, the first smoke baffle 4 is arranged horizontally.

[0045] This design ensures effective smoke shielding and prevents smoke corridors: The horizontal first smoke shield maximizes coverage of the gap between it and the second sidewall, structurally blocking the path for rapid smoke flow between the side tubes and the second sidewall. This complete initial shielding effectively prevents the formation of smoke corridors, ensuring that smoke flows preferentially through the heat exchange tube area, ensuring sufficient heat exchange between the heat exchange tubes and the smoke, and maintaining waste heat recovery efficiency.

[0046] like Figure 7-9 As shown, in another specific embodiment, the second smoke baffle 7 is provided with a smoke guiding arc surface 72, and the smoke guiding arc surface 72 is used to guide the smoke at the edge of the smoke channel to the inside thereof; a reinforcing rib 73 is fixedly provided between the second smoke baffle 7 and the second side wall 2.

[0047] If the flue gas at the edge of the flue gas channel flows directly along the edge, it is easy to avoid the area with dense heat exchange tubes, resulting in the problem of being discharged without sufficient heat exchange.

[0048] The smoke guiding arc surface 72 has a guiding effect on the edge smoke through its arc structure, and uses the smooth transition characteristics of the arc surface to push the smoke originally flowing along the edge into the inside of the smoke channel, forcing more smoke to contact the heat exchange tube, increasing the contact area and time of heat exchange, thereby improving the waste heat recovery efficiency.

[0049] The design of the reinforcing ribs 73 enhances the deformation resistance of the second smoke deflector 7: the second smoke deflector 7 is exposed to high-temperature smoke for a long time and must withstand the impact pressure of the smoke. If it relies solely on its connection with the second side wall 2, it may deform due to long-term stress or temperature changes.

[0050] The reinforcing rib 73 is fixed between the second smoke baffle 7 and the second side wall 2, which is equivalent to adding a supporting frame between the two. It can disperse the smoke impact force and thermal stress on the smoke baffle, avoid deformation of the smoke baffle due to uneven force or high-temperature expansion, and ensure the stability of its smoke blocking and diversion functions.

[0051] Distribute the stress on the connection points to protect the second side wall 2: If the connection between the second smoke baffle 7 and the second side wall 2 bears the weight of the smoke baffle and the impact of smoke for a long time, the connection may become loose or cracked due to excessive local stress.

[0052] The reinforcing ribs 73 disperse the force of the smoke shield to a larger area of ​​the second side wall 2 by increasing the contact area and support points, reducing the load-bearing pressure of the local structure, avoiding damage to the connection points, and indirectly extending the service life of the second side wall and the smoke shield.

[0053] According to one embodiment of the present invention, the second smoke shield 7 is provided with a plurality of ventilation holes 74 , and the ventilation holes 74 of two upper and lower adjacent second smoke shields 7 are staggered.

[0054] Avoid local smoke congestion and reduce flow resistance: If the second smoke baffle is completely closed, the smoke will easily form local vortexes or congestion near it, increasing the overall smoke flow resistance.

[0055] The vents allow some smoke to pass through, thus diverting and reducing pressure. The staggered arrangement prevents the upper and lower vents from forming a straight path. After passing through the lower vents, smoke must then flow a distance around them before passing through the upper vents. This achieves diversion without weakening the smoke baffle's forced flow control.

[0056] Reduce the accumulation of particles on the surface of the smoke damper: If the particles in the smoke directly hit the closed surface of the smoke damper, they are likely to adhere and accumulate due to hard impact; the vents allow some particles to pass through with the smoke, reducing the amount of particles directly attached to the surface of the smoke damper.

[0057] According to one embodiment of the present invention, the first smoke deflector 4 is provided with a first arc surface 42 that matches the second smoke deflector 7 .

[0058] Such a design can optimize smoke guidance and reduce flow resistance: the first arc surface 42 and the second smoke baffle 7 can form a smooth transition structure, avoiding smoke vortex or stagnation area caused by abrupt structures such as right angles and sharp corners between the two.

[0059] When the flue gas flows through the smoke baffle area, the arc surface can guide the flue gas to flow more smoothly to the heat exchange tube area, reducing local resistance loss, ensuring that the flue gas can fully contact the heat exchange tube, and avoiding the decrease in flue gas flow or increase in energy consumption due to excessive resistance.

[0060] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A waste heat boiler header, characterized in that: The invention relates to a smoke passage formed by a first side wall (1) and a second side wall (2), wherein the two first side walls (1) are arranged opposite to each other and a plurality of heat exchange tubes (3) are arranged between the two second side walls (2), and the two second side walls (2) are arranged opposite to each other, wherein the heat exchange tubes (3) include side tubes (31) adjacent to the second side walls (2), and the side tubes (31) are provided with first smoke baffles (4), and the first smoke baffles (4) are arranged at intervals from the second side walls (2); and further comprises a vibration component for applying a vibration force to the first smoke baffles (4).

2. The waste heat boiler header according to claim 1, characterized in that: The side tube (31) is fixedly provided with a mounting plate (5), and a plurality of the mounting plates (5) are provided along the axis direction of the side tube (31). The first smoke baffle (4) is rotatably connected to the mounting plate (5), and the vibration component is provided between the mounting plate (5) and the first smoke baffle (4).

3. The waste heat boiler header according to claim 2, characterized in that: The mounting plate (5) is fixedly provided with a spring seat (51), and the vibration assembly comprises a compression spring (6) arranged between the first smoke baffle (4) and the spring seat (51), the two ends of the compression spring (6) being fixedly connected to the first smoke baffle (4) and the spring seat (51), respectively, and the elastic direction of the compression spring (6) being arranged to be inclined downward.

4. The waste heat boiler header according to claim 2, characterized in that: The first smoke deflector (4) is fixedly provided with a rotating shaft (41), the rotating shaft (41) and the first smoke deflector (4) are spaced apart, and the rotating shaft (41) is passed through the mounting plate (5).

5. The waste heat boiler header according to claim 3, characterized in that: A second smoke baffle (7) is fixedly provided on the inner wall of the second side wall (2), and the second smoke baffle (7) is provided above each of the first smoke baffles (4), and the projections of the first smoke baffles (4) and the second smoke baffles (7) on the horizontal plane are provided with an overlapping portion.

6. The waste heat boiler header according to claim 5, characterized in that: The second smoke baffle (7) is provided with an impact portion (71) for the first smoke baffle (4) to impact.

7. The waste heat boiler header according to claim 3, characterized in that: When the compression spring (6) is in a natural state, the first smoke baffle (4) is arranged horizontally.

8. The waste heat boiler header according to claim 5, characterized in that: The second smoke baffle (7) is provided with a smoke guiding arc surface (72), and the smoke guiding arc surface (72) is used to guide smoke at the edge of the smoke channel toward the inside thereof; and a reinforcing rib (73) is fixedly provided between the second smoke baffle (7) and the second side wall (2).

9. The waste heat boiler header according to claim 8, characterized in that: The second smoke baffle (7) is provided with a plurality of ventilation holes (74), and the ventilation holes (74) of two upper and lower adjacent second smoke baffles (7) are staggered.

10. The waste heat boiler header according to claim 8, characterized in that: The first smoke baffle (4) is provided with a first curved surface (42) that matches the second smoke baffle (7).

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