Wave tooth fin casting plate type air preheater
By introducing reciprocating screws and sprocket systems into the wave-tooth fin cast plate air preheater, the problem that hot flue gas is difficult to flow uniformly to multiple sets of wave-tooth fin preheating plates is solved, the heat uniformity of each preheating plate is achieved, and the air preheating quality is improved.
Patent Information
- Application Number
- CN202421640893.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-11
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-11
AI Technical Summary
In the wave-tooth fin cast plate air preheater, it is difficult for hot smoke to flow uniformly to multiple sets of wave-tooth fin preheating plates, resulting in inconsistent heat obtained by each preheating plate, affecting the preheating effect.
A wave-toothed fin cast plate air preheater is designed. By setting up a reciprocating screw and sprocket system in the air preheater box, the air outlet bucket is driven to move simultaneously, so that the hot smoke is uniformly sprayed to multiple sets of wave-toothed fin air preheating plates.
The uniform distribution of hot flue gas is achieved, ensuring that each group of wave-tooth fin air preheating plates obtains similar heat, thereby improving the air preheating quality.
Smart Images
Figure CN222783538U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of air preheaters, in particular to a corrugated fin casting plate type air preheater. Background Art
[0002] The corrugated fin cast plate air preheater benefits from the corrugated fins evenly distributed on its plate surface, which can cause the hot flue gas to strongly twist on its surface to form turbulence, thereby improving the heat exchange effect. However, since the hot gas inlet position of the corrugated fin cast plate air preheater is fixed, it is difficult to make the hot flue gas entering the corrugated fin cast plate air preheater flow evenly to the multiple groups of corrugated fin preheating plates in the frame, which makes it difficult for the multiple groups of corrugated fin preheating plates to obtain similar heat, thereby affecting the preheating effect. In view of the above situation, technical innovation is carried out on the basis of the existing air preheater. Utility Model Content
[0003] The utility model aims to provide a corrugated fin casting plate type air preheater to solve the problems raised in the above background technology.
[0004] To achieve the above purpose, the utility model provides the following technical solution: a corrugated fin casting plate type air preheater, comprising:
[0005] The air preheater box body is evenly provided with corrugated wing air preheating plates inside the air preheater box body, and the corrugated wing air preheating plates are designed to be tilted to the right, and multiple groups of the corrugated wing air preheating plates are interconnected, wherein:
[0006] An air inlet pipe is arranged on the left side of the air preheater box, and an air outlet pipe is arranged on the right side of the air preheater box. The air inlet pipe is communicated with an air inlet of the leftmost corrugated wing air preheating plate among the multiple groups of corrugated wing air preheating plates, and the air outlet pipe is communicated with an air outlet of the rightmost corrugated wing air preheating plate among the multiple groups of corrugated wing air preheating plates. A drive assembly is arranged inside the air preheater box.
[0007] Preferably, the driving assembly includes a reciprocating screw, a group of sprockets are arranged on the left side of the two groups of reciprocating screws, the outer walls of the two groups of sprockets are meshed with chains, a motor is arranged on the right side of the front reciprocating screw in the two groups of reciprocating screws, a group of reciprocating sliders are screwed on the outer walls of the two groups of reciprocating screws, and an air outlet bucket is arranged between the two groups of reciprocating sliders.
[0008] Preferably, the motor is arranged on the right side of the air preheater case, the output end of the motor passes through the right side of the air preheater case and is connected to the reciprocating screw, the left side of the reciprocating screw passes through the left side of the air preheater case and is connected to the sprocket, and the air outlet hopper is located at the top of the corrugated wing air preheating plate.
[0009] Preferably, the bottom of the air preheater box is connected to a smoke inlet pipe, the bottom of the air preheater box is connected to a smoke outlet pipe, and a high-temperature resistant gas transmission pipe is provided between the smoke inlet pipe and the gas outlet hopper.
[0010] Preferably, two groups of inspection ports are evenly opened through the front side of the air preheater housing, sealing plates are placed in the inspection ports, and fixing ears are evenly arranged on the front side of the sealing plates.
[0011] Preferably, a through hole is formed through the front side of the fixing ear, threaded holes are evenly formed on the front side of the air preheater housing, bolts are arranged in the through holes, and the bolts are threadedly connected to the threaded holes.
[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0013] In the utility model, hot flue gas enters the air outlet hopper through the flue gas inlet pipe and the high temperature resistant air delivery pipe. Through the cooperation of the sprocket and the chain, the motor can drive the two groups of reciprocating screws to rotate simultaneously, and the reciprocating slider is driven by the reciprocating screw to move back and forth left and right, thereby driving the air outlet hopper to move synchronously, so that the air outlet hopper can evenly spray the hot flue gas onto the multiple groups of corrugated wing air preheating plates, thereby ensuring that each group of corrugated wing air preheating plates can obtain similar heat, thereby ensuring the quality of air preheating;
[0014] After unscrewing the bolts, the cover plate can be removed. At this time, through the inspection port, various components in the air preheater box can be easily inspected and maintained;
[0015] The corrugated wing air preheating plate is designed to be tilted to the right, which can extend the flow time of hot flue gas in the corrugated wing air preheating plate. At the same time, the corrugated wing on its surface makes the hot flue gas produce strong torsional movement on its surface to form turbulence, thereby improving the waste heat absorption rate of the corrugated wing air preheating plate to the hot flue gas. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the structure of the corrugated fin casting plate type air preheater of the utility model;
[0017] Figure 2 It is a top cross-sectional view of the corrugated fin casting plate type air preheater of the utility model;
[0018] Figure 3 It is a front sectional view of the corrugated fin casting plate type air preheater of the utility model.
[0019] In the figure: 1. air preheater box; 11. flue gas inlet pipe; 111. corrugated wing air preheating plate; 12. flue gas outlet pipe; 13. air inlet pipe; 14. air outlet pipe; 2. sealing plate; 21. fixing ear; 22. bolt; 3. motor; 31. reciprocating screw rod; 32. sprocket; 33. chain; 34. reciprocating slider; 35. air outlet bucket; 36. high temperature resistant air transmission pipe. DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] See also Figure 1-Figure 3The corrugated fin casting plate air preheater comprises an air preheater housing 1, and corrugated fin air preheating plates 111 are evenly and fixedly arranged inside the air preheater housing 1. The corrugated fin air preheating plates 111 are designed to be tilted to the right, so as to prolong the flow time of hot flue gas in the corrugated fin air preheating plates 111, and at the same time, the corrugated fins on its surface are used to make the hot flue gas produce strong torsion on its surface to form turbulence, so as to improve the waste heat absorption rate of the corrugated fin air preheating plates 111 to the hot flue gas. Multiple groups of corrugated fin air preheating plates 111 are interconnected. An air inlet pipe 13 is arranged on the left side of the air preheater housing 1, and an air outlet pipe 14 is arranged on the right side of the air preheater housing 1. The air inlet pipe 13 is connected to the air inlet of the corrugated wing air preheating plate 111 located on the leftmost side among the multiple groups of corrugated wing air preheating plates 111, and the air outlet pipe 14 is connected to the air outlet of the corrugated wing air preheating plate 111 located on the rightmost side among the multiple groups of corrugated wing air preheating plates 111. A driving component is placed inside the air preheater box 1, and the driving component includes a reciprocating screw rod 31, a group of sprocket wheels 32 are fixedly arranged on the left side of the two groups of reciprocating screw rods 31, and the outer side walls of the two groups of sprocket wheels 32 are meshed with chains 33. A motor 3 is fixedly arranged on the right side of the front reciprocating screw rod 31 in the two groups of reciprocating screw rods 31, and a group of reciprocating sliders 34 are screwed to the outer side walls of the two groups of reciprocating screw rods 31. An air outlet hopper 35 is fixedly arranged between the two sets of reciprocating sliders 34, the motor 3 is fixedly arranged on the right side of the air preheater housing 1, the output end of the motor 3 penetrates the right side of the air preheater housing 1 and is connected to the reciprocating screw rod 31, the left side of the reciprocating screw rod 31 penetrates the left side of the air preheater housing 1 and is connected to the sprocket wheel 32, the air outlet hopper 35 is located at the top of the corrugated wing air preheating plate 111, the bottom of the air preheater housing 1 is connected to the flue gas inlet pipe 11, the bottom of the air preheater housing 1 is connected to the flue gas outlet pipe 12, the flue gas inlet pipe 11 and the air outlet hopper 35 are connected to each other with a high temperature resistant gas delivery pipe 36, the hot flue gas passes through the flue gas inlet pipe 11 and flows along the high temperature resistant gas delivery pipe 36 After entering the air outlet hopper 35, the motor 3 can drive the two groups of reciprocating screws 31 to rotate simultaneously through the cooperation of the sprocket 32 and the chain 33, and the reciprocating slider 34 is driven to move back and forth left and right through the reciprocating screw 31, thereby driving the air outlet hopper 35 to move synchronously, so that the air outlet hopper 35 can spray the hot flue gas evenly onto the multiple groups of corrugated wing air preheating plates 111, thereby ensuring that each group of corrugated wing air preheating plates 111 can obtain similar heat, thereby ensuring the air preheating quality, and the air enters the corrugated wing air preheating plate 111 through the air inlet pipe 13 for preheating, and the preheated air is discharged through the air outlet pipe 14, and the flue gas that has absorbed heat is discharged through the flue gas outlet pipe 12;
[0022] Two groups of inspection ports are evenly opened on the front side of the air preheater box 1, and a sealing plate 2 is placed in the inspection port. A sealing ring is provided on the outer wall of the sealing plate 2, and a sealing effect is achieved by the sealing ring. No further details are given here. A fixing ear 21 is evenly fixed on the front side of the sealing plate 2, and a through hole is opened on the front side of the fixing ear 21. Threaded holes are evenly opened on the front side of the air preheater box 1, and bolts 22 are rotatably set in the through holes. The bolts 22 are screwed into the threaded holes. After the bolts 22 are unscrewed, the sealing plate 2 can be removed. At this time, the various components in the air preheater box 1 can be conveniently inspected and maintained through the inspection port.
[0023] Working principle: hot flue gas passes through the flue gas inlet pipe 11 and enters the air outlet hopper 35 along the high temperature resistant air delivery pipe 36. Through the cooperation of the sprocket 32 and the chain 33, the motor 3 can drive the two sets of reciprocating screws 31 to rotate simultaneously. The reciprocating slider 34 is driven by the reciprocating screw 31 to move back and forth left and right, thereby driving the air outlet hopper 35 to move synchronously, so that the air outlet hopper 35 can spray the hot flue gas evenly onto multiple sets of corrugated wing air preheating plates 111, thereby ensuring that each set of corrugated wing air preheating plates 111 can obtain similar heat, thereby ensuring the quality of air preheating. The air enters the corrugated wing air preheating plate through the air inlet pipe 13 111 is preheated, and the preheated air is discharged through the air outlet pipe 14, and the flue gas that has absorbed heat is discharged through the flue gas outlet pipe 12. After unscrewing the bolt 22, the sealing plate 2 can be removed. At this time, through the inspection port, the various components in the air preheater box 1 can be conveniently inspected and maintained. The corrugated wing air preheating plate 111 is designed to be tilted to the right, so as to extend the flow time of hot flue gas in the corrugated wing air preheating plate 111, and at the same time, with the corrugated wing on its surface, the hot flue gas is strongly torsioned on its surface to form turbulence, thereby improving the waste heat absorption rate of the corrugated wing air preheating plate 111 to the hot flue gas.
Claims
1. The corrugated fin casting plate type air preheater is characterized by: include: An air preheater housing (1), wherein the interior of the air preheater housing (1) is evenly provided with corrugated wing air preheating plates (111), the corrugated wing air preheating plates (111) are designed to be tilted to the right, and a plurality of groups of the corrugated wing air preheating plates (111) are interconnected, wherein: An air inlet pipe (13) is arranged on the left side of the air preheater housing (1), and an air outlet pipe (14) is arranged on the right side of the air preheater housing (1). The air inlet pipe (13) is communicated with an air inlet of a leftmost corrugated wing air preheating plate (111) among the plurality of groups of corrugated wing air preheating plates (111), and the air outlet pipe (14) is communicated with an air outlet of a rightmost corrugated wing air preheating plate (111) among the plurality of groups of corrugated wing air preheating plates (111). A drive assembly is arranged inside the air preheater housing (1).
2. The corrugated fin casting plate type air preheater according to claim 1, characterized in that: The driving assembly comprises a reciprocating screw rod (31), a group of sprocket wheels (32) are arranged on the left side of the two groups of reciprocating screw rods (31), the outer side walls of the two groups of sprocket wheels (32) are meshed with chains (33), a motor (3) is arranged on the right side of the front reciprocating screw rod (31) in the two groups of reciprocating screw rods (31), a group of reciprocating sliders (34) are screwed on the outer side walls of the two groups of reciprocating screw rods (31), and an air outlet hopper (35) is arranged between the two groups of reciprocating sliders (34).
3. The corrugated fin casting plate type air preheater according to claim 2, characterized in that: The motor (3) is arranged on the right side of the air preheater housing (1); the output end of the motor (3) passes through the right side of the air preheater housing (1) and is connected to a reciprocating screw rod (31); the left side of the reciprocating screw rod (31) passes through the left side of the air preheater housing (1) and is connected to a sprocket wheel (32); and the air outlet hopper (35) is located at the top of the corrugated wing air preheating plate (111).
4. The corrugated fin casting plate type air preheater according to claim 2, characterized in that: The bottom of the air preheater housing (1) is connected to a smoke inlet pipe (11), the bottom of the air preheater housing (1) is connected to a smoke outlet pipe (12), and a high-temperature resistant gas delivery pipe (36) is provided between the smoke inlet pipe (11) and the gas outlet hopper (35).
5. The corrugated fin casting plate type air preheater according to claim 1, characterized in that: Two groups of inspection openings are evenly provided on the front side of the air preheater housing (1), a sealing plate (2) is placed in the inspection opening, and fixing ears (21) are evenly provided on the front side of the sealing plate (2).
6. The corrugated fin casting plate type air preheater according to claim 5, characterized in that: A through hole is formed through the front side of the fixing ear (21), and threaded holes are evenly formed on the front side of the air preheater housing (1). Bolts (22) are arranged in the through holes, and the bolts (22) are screwed into the threaded holes.