A boiler waste heat recovery device

Abstract

The utility model relates to a waste heat recovery technical field especially a boiler waste heat recovery device, including heat exchange furnace and setting up in the heat exchange furnace one side's air exchange subassembly, the air exchange subassembly passes through fixed assembly with heat exchange furnace fixed, the upside of air exchange subassembly is provided with the adjusting assembly for adjusting the pressure intensity of air exchange subassembly and is positioned to the positioning assembly for adjusting assembly, the utility model discloses through air exchange subassembly to can realize automatic pressure relief when in stove pressure overrun, effectively prevent the security risk caused by the overhigh air pressure, and simultaneously is equipped with adjusting assembly, can according to actual working condition flexible adjustment exhaust pressure threshold value, ensure that the system can keep the best operating state under different working environment.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery technology, and in particular to a boiler waste heat recovery device. Background Technology

[0002] Boiler waste heat recovery devices are highly efficient and energy-saving equipment primarily used to recover and reuse the heat energy from high-temperature flue gas, steam, or other waste heat emitted by boilers. They transfer waste heat to boiler feedwater, combustion air, or other working fluids through heat exchangers such as economizers, air preheaters, and heat pipes. This preheating of feedwater, heating of air, and generation of low-pressure steam or hot water significantly improves energy efficiency and reduces fuel consumption and operating costs.

[0003] As disclosed in Chinese Patent Publication No. CN222864981U, a boiler waste heat recovery device includes a main tank. The main tank has a heat exchange chamber on its inner side. Baffles are installed on both the upper and lower sides of the heat exchange chamber. The outer sides of both sets of baffles are fixedly connected to the inner side of the main tank. Multiple sets of through holes are correspondingly provided on both sets of baffles. Heat exchange tubes are fixedly installed between the multiple sets of corresponding upper and lower through holes. A water inlet pipe is connected through one side of the heat exchange chamber, and a water outlet pipe is connected through the other side. This utility model, through the cooperation of the air inlet and the main tank, can realize the introduction of waste heat generated by the boiler into the main tank. Most existing boiler waste heat recovery devices generate a certain amount of water vapor during operation when heating the feedwater. However, most current waste heat recovery devices have low efficiency in processing water vapor. If the accumulated water vapor cannot be discharged in time, it will occupy internal space and affect heat exchange efficiency. However, continuous discharge will cause heat loss, resulting in low utilization. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned shortcomings in the existing technology by proposing a boiler waste heat recovery device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: Design a boiler waste heat recovery device, including a heat exchange furnace and a ventilation component disposed on one side of the heat exchange furnace. The ventilation component is fixed to the heat exchange furnace by a fixing component. An adjustment component for adjusting the pressure intensity of the ventilation component and a positioning component for positioning the adjustment component are provided on the upper side of the ventilation component. The fixing component includes a connecting ring, a connecting hole is provided on one side of the heat exchange furnace, the connecting ring is threaded to the connecting hole, a stop ring is formed on the inner circumferential surface of the connecting ring, and a sealing element is provided on the end face of the stop ring; The ventilation assembly includes a circular tube formed and connected above the connecting ring, and a ventilation block slidably connected to the circular tube. A plurality of ventilation grooves are provided at the connection between the circular tube and the connecting ring, and the ventilation block abuts against the sealing element. The adjustment assembly includes a baffle head formed on the upper side of the circular tube and a rod that passes through and is slidably connected to the baffle head. One end of the rod is fixedly connected to the ventilation block, and a knob is rotatably connected to the end face of the baffle head. The adjustment assembly also includes a pipe connected to the knob by a thread. A limit tube is formed on the upper side of the stop head. The pipe is slidably connected to the limit tube. A spring is slidably connected inside the pipe. A pipe cap is threaded to the upper end of the pipe. The two ends of the spring abut against the pipe cap and the rod, respectively.

[0006] Furthermore, the positioning component includes a gear ring fixedly connected to the lower side of the knob, and a support plate fixedly connected to the stop head. A pull rod is threaded through and slidably connected to the end face of the support plate. One end of the pull rod is engaged with the gear ring, and the other end of the pull rod is fixedly connected to the support plate with a tension spring.

[0007] The boiler waste heat recovery device proposed in this utility model has the following advantages: This utility model can automatically release pressure when the pressure inside the furnace exceeds the limit through the air exchange component, effectively preventing safety hazards caused by excessive gas pressure. At the same time, it is equipped with an adjustment component, which can flexibly adjust the exhaust pressure threshold according to the actual working conditions, ensuring that the device can maintain the best operating state under different working environments. Attached Figure Description

[0008] Figure 1 This is a perspective view of the present utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a partial structural breakdown diagram of the present invention; Figure 4 For the present utility model Figure 3 Enlarged structural diagram of area A. In the diagram: 1. Heat exchanger furnace; 11. Connecting hole; 2. Ventilation assembly; 21. Circular tube; 22. Ventilation block; 23. Ventilation trough; 3. Fixing assembly; 31. Connecting ring; 32. Stop ring; 33. Seal; 4. Adjusting assembly; 41. Stop head; 42. Rod; 43. Knob; 44. Pipe fitting; 45. Limiting tube; 46. Spring; 47. Pipe cover; 5. Positioning assembly; 51. Gear ring; 52. Support plate; 53. Pull rod; 54. Tension spring. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0010] Reference Figure 1-4 A boiler waste heat recovery device includes a heat exchange furnace 1 and an air exchange component 2 disposed on one side of the heat exchange furnace 1. The air exchange component 2 is fixed to the heat exchange furnace 1 by a fixing component 3. An adjusting component 4 for adjusting the pressure intensity of the air exchange component 2 and a positioning component 5 for positioning the adjusting component 4 are disposed on the upper side of the air exchange component 2. The heat exchange furnace 1 is prior art and will not be described in detail here. It should be noted that the fixing component 3 includes a connecting ring 31, and a connecting hole 11 is provided on one side of the heat exchange furnace 1. The connecting ring 31 is threadedly connected to the connecting hole 11. A stop ring 32 is formed on the inner circumferential surface of the connecting ring 31, and a sealing element 33 is provided on the end face of the stop ring 32. The sealing element 33 is a sealing ring or other sealing material. Furthermore, the ventilation assembly 2 includes a circular tube 21 formed and connected above the connecting ring 31, and a ventilation block 22 slidably connected to the circular tube 21. The connection between the circular tube 21 and the connecting ring 31 is provided with a plurality of ventilation grooves 23. The ventilation block 22 abuts against the sealing element 33 and is fixed to the heat exchange furnace 1 by the connecting ring 31 through a threaded connection. Then, the ventilation block 22 abuts against the sealing element 33 to seal the inside of the heat exchange furnace 1. When the pressure inside the heat exchange furnace 1 is too high, the gas will push the ventilation block 22 up and the excess gas can be discharged through the ventilation grooves 23. In this embodiment, the adjustment component 4 includes a baffle head 41 formed on the upper side of the circular tube 21, and a rod 42 that passes through and is slidably connected to the baffle head 41. One end of the rod 42 is fixedly connected to the air exchange block 22, and a knob 43 is rotatably connected to the end face of the baffle head 41.

[0011] The adjusting assembly 4 further includes a pipe 44 threadedly connected to the knob 43. A limiting tube 45 is formed on the upper side of the stop head 41. The pipe 44 is slidably connected to the limiting tube 45. A spring 46 is slidably connected inside the pipe 44. A pipe cap 47 is threadedly connected to the upper end of the pipe 44. The two ends of the spring 46 respectively abut against the pipe cap 47 and the rod 42. The pipe 44 and the limiting tube 45 are slidably connected and circumferentially locked by a sliding block and a sliding groove. Rotating the knob 43 moves the pipe 44 up and down. The rod 42 cannot change position because the lower air vent 22 abuts against the stop ring 32. Therefore, when the pipe 44 moves, the distance between the pipe cap 47 and the rod 42 changes, thus changing the pressure on the spring 46, thereby changing the force required to push up the air vent 22. The pipe cap 47 seals the upper side of the pipe 44.

[0012] Based on the above embodiments, the positioning component 5 includes a gear ring 51 fixedly connected to the lower side of the knob 43, and a support plate 52 fixedly connected to the stop head 41. A pull rod 53 is passed through and slidably connected to the end face of the support plate 52. One end of the pull rod 53 is engaged with the gear ring 51, and the other end of the pull rod 53 is fixedly connected to the support plate 52 with a tension spring 54. When the pressure needs to be adjusted, it is only necessary to pull the pull rod 53 to rotate the knob 43 and change it. After the change is completed, the pull rod 53 is released, and the pull rod 53 is reset by the tension spring 54 to engage with the gear ring 51 for positioning.

[0013] Working method: During operation, the ventilation component 2 is fixed to the heat exchange furnace 1 by the fixing component 3. Then, according to the site requirements, the positioning component 5 is opened and the knob 43 is rotated to change the thrust required to open the ventilation block 22. After the change is completed, the positioning component 5 is released. Then, the boiler is connected to the heat exchange furnace 1 so that the waste heat is connected to the heat exchange furnace 1, and water is injected into the heat exchange furnace 1 to preheat the water with waste heat.

[0014] 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 boiler waste heat recovery device, comprising a heat exchange furnace (1) and an air exchange assembly (2) disposed on one side of the heat exchange furnace (1), characterized in that: The ventilation assembly (2) is fixed to the heat exchange furnace (1) by a fixing assembly (3). The upper side of the ventilation assembly (2) is provided with an adjustment assembly (4) for adjusting the pressure intensity of the ventilation assembly (2) and a positioning assembly (5) for positioning the adjustment assembly (4). The fixing component (3) includes a connecting ring (31), and a connecting hole (11) is provided on one side of the heat exchange furnace (1). The connecting ring (31) is threadedly connected to the connecting hole (11). A stop ring (32) is formed on the inner circumferential surface of the connecting ring (31), and a sealing element (33) is provided on the end face of the stop ring (32). The ventilation assembly (2) includes a circular tube (21) formed and connected above the connecting ring (31) and a ventilation block (22) slidably connected to the circular tube (21). A plurality of ventilation grooves (23) are provided at the connection between the circular tube (21) and the connecting ring (31). The ventilation block (22) abuts against the sealing element (33). The adjustment component (4) includes a baffle head (41) formed on the upper side of the round tube (21) and a rod (42) that passes through and slides through the baffle head (41). One end of the rod (42) is fixedly connected to the air exchange block (22), and a knob (43) is rotatably connected to the end face of the baffle head (41). The adjustment assembly (4) also includes a pipe (44) threadedly connected to the knob (43), a limiting tube (45) is formed on the upper side of the stop head (41), the pipe (44) is slidably connected to the limiting tube (45), a spring (46) is slidably connected inside the pipe (44), a pipe cap (47) is threadedly connected to the upper end of the pipe (44), and the two ends of the spring (46) abut against the pipe cap (47) and the rod (42) respectively.

2. The boiler waste heat recovery device according to claim 1, characterized in that: The positioning component (5) includes a gear ring (51) fixedly connected to the lower side of the knob (43) and a support plate (52) fixedly connected to the stop head (41). A pull rod (53) is inserted through and slidably connected to the end face of the support plate (52). One end of the pull rod (53) is engaged with the gear ring (51), and the other end of the pull rod (53) is fixedly connected to the support plate (52) with a tension spring (54).

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