Flue gas waste heat recovery device

Abstract

The utility model discloses a flue gas waste heat recovery device. According to the technical scheme, the flue gas heat exchanger comprises a flue gas pipeline and a heat exchanger body arranged on the flue gas pipeline, the heat exchanger body comprises a plurality of sets of fixed parts and movable parts, the fixed parts are arranged on the outer side of the upper end of the flue gas pipeline, connecting pipes are arranged on the fixed parts, and through holes are formed in the flue gas pipeline. The connecting pipe penetrates through the through hole and is located in the flue gas pipeline, the movable part is located in the flue gas pipeline and connected with the connecting pipe, sliding rails are arranged on the flue gas pipeline, the sliding rails are located on the two sides of the movable part, abutting blocks are arranged on the two sides of the movable part and located on the upper sides of the sliding rails, and the abutting blocks are located on the upper sides of the sliding rails. According to the flue gas cleaning device, the movable part can be cleaned after being taken out, cleaning is more thorough, and the cleaning period can be prolonged. The movable part is cleaned outside without environmental limitation, and the cleaning efficiency is high. And the shutdown time of the incinerator is shortened, and the garbage treatment speed is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of waste incineration technology, and more specifically to a flue gas waste heat recovery device. Background Technology

[0002] With the development of incineration power generation technology, more and more waste is being collected and incinerated. The heat generated from incineration is used for power generation through waste heat recovery, achieving the secondary utilization of resources. Current waste heat recovery devices are installed inside the flue gas ducts of the incinerator. Through heat exchange, the heat from the flue gas heats the water in the heat exchange pipes, and then the steam is used to generate electricity. Existing heat exchangers consist of several sets, sequentially arranged inside the flue gas ducts, with the pipes of these sets interconnected to achieve a higher heat exchange rate and improve energy utilization. However, the surface of the heat exchangers closer to the incinerator is more easily adhered to by flue gas and dust, requiring a shorter cleaning cycle, while the surface of the heat exchangers farther from the incinerator requires a longer cleaning cycle. This difference in cleaning cycles complicates the cleaning process of the waste heat recovery device, requiring frequent entry of personnel into the flue gas ducts for cleaning, resulting in low efficiency and inconvenience. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a flue gas waste heat recovery device to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flue gas waste heat recovery device, comprising a flue gas duct and a heat exchanger disposed on the flue gas duct. The heat exchanger includes several sets of fixed parts and movable parts. The fixed parts are disposed on the outer side of the upper end of the flue gas duct, and a connecting pipe is provided on the fixed parts. The flue gas duct has a through hole, and the connecting pipe passes through the through hole and is located inside the flue gas duct. The movable parts are located inside the flue gas duct and are connected to the connecting pipe. The flue gas duct has a slide rail, which is located on both sides of the movable parts. Abutment blocks are provided on both sides of the movable parts, and the abutment blocks are located on the upper side of the slide rail. The flue gas duct has an inlet and an outlet, and both the inlet and the outlet are provided with openable and closable baffles. The inlet is located close to the incinerator, and the outlet is located away from the incinerator. The heat exchanger is located between the inlet and the outlet.

[0005] As a further improvement of this utility model, the flue gas duct is provided with a disassembly hole on the side of the through hole, and the disassembly hole is provided with an openable and closable sealing plate.

[0006] As a further improvement of this utility model, the movable part is provided with an extraction hole.

[0007] As a further improvement of this utility model, a movable block is provided on the lower side of the abutting block, a lifting hole is provided on the abutting block, a lifting rod is provided on the movable block, the lifting rod is slidably connected in the lifting hole, and a spring is provided between the abutting block and the movable block.

[0008] As a further improvement of this utility model, the lower end of the movable block is provided with a roller.

[0009] The advantages of this invention are that removing the movable part allows for more thorough cleaning and extends the cleaning cycle. Cleaning the movable part externally is not limited by environmental conditions and is highly efficient. Furthermore, it shortens the incinerator's downtime, ensuring faster waste processing. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0011] Figure 2 This is a partial structural diagram of the fixed part, the moving part, and the flue gas duct;

[0012] Figure 3 A structural schematic diagram of the flue gas duct, moving parts, and slide rails;

[0013] Figure 4 for Figure 3 A magnified structural diagram of part A in the middle.

[0014] Markings: 1. Flue gas duct; 11. Through hole; 2. Heat exchanger; 3. Fixed part; 31. Connecting pipe; 4. Movable part; 40. Extraction hole; 41. Abutting block; 411. Lifting hole; 42. Movable block; 421. Lifting rod; 43. Spring; 44. Roller; 5. Slide rail; 61. Inlet; 62. Outlet; 63. Baffle; 7. Disassembly hole; 71. Sealing plate. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0016] Reference Figure 1 one Figure 4As shown, a flue gas waste heat recovery device according to this embodiment includes a flue gas duct 1 and a heat exchanger 2 installed on the flue gas duct 1. The heat exchanger 2 includes several sets of fixed parts 3 and movable parts 4. The fixed parts 3 are located on the outer side of the upper end of the flue gas duct 1 and are provided with connecting pipes 31. The flue gas duct 1 is provided with through holes 11. The connecting pipes 31 pass through the through holes 11 and are located inside the flue gas duct 1. The movable parts 4 are located inside the flue gas duct 1 and are connected to the connecting pipes 31. The flue gas duct 1 is provided with slide rails 5, which are located on both sides of the movable parts 4. The movable parts 4 are provided with abutment blocks 41 on both sides and are located on the upper side of the slide rails 5. The flue gas duct 1 is provided with an inlet 61 and an outlet 62. Both the inlet 61 and the outlet 62 are provided with openable and closable baffles 63. The outlet 62 is located close to the incinerator, and the inlet 61 is located away from the incinerator. The heat exchanger 2 is located between the inlet 61 and the outlet 62.

[0017] Through the above technical solution, after the flue gas waste heat recovery device has been in use for a certain period of time, the flue gas can be introduced into the flue gas duct 1 by opening the inlet 61 and outlet 62. The connecting pipes 31 and movable parts 4 of each group can then be separated. After separation, the movable parts 4 descend, and the contact block 41 is positioned on the slide rail 5. Then, the positions of the movable parts 4 are moved sequentially, and the N movable parts 4 closest to the incinerator are removed from the outlet 62 (N≥1). The same number of clean movable parts 4 are then placed in the inlet 61. The positions of each movable part 4 are then moved, and they are fixedly connected to the corresponding connecting pipes 31. Cleaning the movable parts 4 after removal is more thorough and extends the cleaning cycle. Cleaning the movable parts 4 externally is not subject to environmental restrictions and has high cleaning efficiency. Furthermore, it shortens the incinerator's downtime and ensures faster waste processing.

[0018] Specifically, a fixed part 3 has two connecting pipes 31, which are the water inlet pipe and the water outlet pipe.

[0019] As an improved embodiment, the flue gas duct 1 is provided with a disassembly hole 7 on the side of the through hole 11, and the disassembly hole 7 is provided with an openable and closable sealing plate 71.

[0020] The above technical solution, by providing the disassembly hole 7, allows employees to operate from outside the flue gas duct 1 without entering it, thus reducing the harm of flue gas to their health. Furthermore, multiple employees can disassemble different sets of fixed parts 3 and movable parts 4 separately, improving the replacement efficiency of the movable parts 4, shortening incinerator downtime, and increasing waste treatment efficiency.

[0021] As one specific embodiment of the improvement, the movable part 4 is provided with an extraction hole 40.

[0022] Through the above technical solution, the extraction hole 40 is used to connect to external hook-like equipment, so as to put in and take out the flue gas pipe 1, making the operation more convenient.

[0023] Specifically, there are two extraction holes 40, which are respectively located on both sides of the movable part 4, making the movable part 4 more stable during the process of inserting and removing the flue gas pipe 1 and avoiding bumps.

[0024] As an improved specific implementation, the lower side of the abutment block 41 is provided with a movable block 42, the abutment block 41 is provided with a lifting hole 411, the movable block 42 is provided with a lifting rod 421, the lifting rod 421 is slidably connected in the lifting hole 411, and a spring 43 is provided between the abutment block 41 and the movable block 42.

[0025] Through the above technical solution, during the separation of the movable part 4 and the fixed part 3, the movable part 4 continuously descends. During this process, the movable block 42 first contacts the slide rail 5 and then remains at that height. The movable part 4 and the contact block 41 continue to descend and compress the spring 43 until the movable part 4 separates from the fixed part 3. At this time, the movable part 4 can be pushed to slide on the slide rail 5 and move to the next position.

[0026] Specifically, the lifting rod 421 and the lifting hole 411 limit the position of the contact block 41 and the movable block 42, ensuring stability during use. Furthermore, the lifting rod 421 encloses the spring 43, improving the stability of the spring 43's position. It should be noted that when the movable part 4 and the fixed part 3 are separated, the spring 43 is compressed, thus supporting the movable part 4; when the movable part 4 and the fixed part 3 are fixed, the spring 43 returns to its original position, supporting the movable part 4, making operation more convenient.

[0027] As one specific embodiment of the improvement, the lower end of the movable block 42 is provided with a roller 44.

[0028] With the above technical solution, after the movable part 4 is separated from the fixed part 3, the roller 44 abuts against the slide rail 5, so that the resistance of the movable part 4 is small during the movement of the slide rail 5, and the movement of the movable part 4 is easier and more convenient.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A flue gas waste heat recovery device, comprising a flue gas duct (1) and a heat exchanger (2) disposed on the flue gas duct (1), characterized in that: The heat exchanger (2) includes several sets of fixed parts (3) and movable parts (4). The fixed parts (3) are located on the outer side of the upper end of the flue gas duct (1). The fixed parts (3) are provided with connecting pipes (31). The flue gas duct (1) is provided with through holes (11). The connecting pipes (31) pass through the through holes (11) and are located inside the flue gas duct (1). The movable parts (4) are located inside the flue gas duct (1) and are connected to the connecting pipes (31). The flue gas duct (1) is provided with slide rails (5). The slide rail (5) is located on both sides of the movable part (4). The movable part (4) is provided with abutment blocks (41) on both sides. The abutment blocks (41) are located on the upper side of the slide rail (5). The flue gas pipe (1) is provided with an inlet (61) and an outlet (62). Both the inlet (61) and the outlet (62) are provided with openable baffles (63). The outlet (62) is located close to the incinerator, and the inlet (61) is located away from the incinerator. The heat exchanger (2) is located between the inlet (61) and the outlet (62).

2. The flue gas waste heat recovery device according to claim 1, characterized in that: The flue gas duct (1) has a disassembly hole (7) on the side of the through hole (11), and the disassembly hole (7) is provided with an openable and closable sealing plate (71).

3. The flue gas waste heat recovery device according to claim 1 or 2, characterized in that: The movable part (4) is provided with an extraction hole (40).

4. The flue gas waste heat recovery device according to claim 1 or 2, characterized in that: The contact block (41) has a movable block (42) on its lower side. The contact block (41) has a lifting hole (411) and the movable block (42) has a lifting rod (421). The lifting rod (421) is slidably connected in the lifting hole (411). A spring (43) is provided between the contact block (41) and the movable block (42).

5. The flue gas waste heat recovery device according to claim 4, characterized in that: The lower end of the movable block (42) is provided with a roller (44).

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