Air preheater with protection effect

Abstract

The utility model discloses a kind of air preheater with protective effect, including shell, shell exterior mounting fixed plate, the fixed plate exterior fixedly connected fixed sleeve, the fixed sleeve inside insertion limiting rod, the limiting rod bottom fixedly connected limiting block, the limiting block bottom weld spring, the spring other end fixedly connected fixed plate, the limiting rod passes through limiting hole inside, the limiting hole is set up in flange plate outside.This kind of air preheater with protective effect, by installing fixed plate outside shell, and fixedly connected fixed sleeve outside fixed plate, insertion limiting rod inside fixed sleeve, then fixedly connected limiting block in limiting rod bottom, limiting block bottom weld spring, so when docking if strength is too big can play protective effect to flange plate, to avoid damage, affect fastening effect, and flange hole is conveniently aligned when flange plate is installed, not easy to dislocation, time-saving and labor-saving when staff operates.

Description

Technical Field

[0001] This utility model belongs to the field of air preheater technology, and in particular relates to an air preheater with protective effect. Background Technology

[0002] An air preheater is a heat exchange surface in the boiler tail flue that preheats the air entering the boiler to a certain temperature through internal heat dissipation fins. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption.

[0003] Currently available air preheaters with protective features have the following problems when in use:

[0004] 1. When traditional air preheaters are used, they are fixed with flanges when connected to the flue gas pipe. Since air preheaters are often large, excessive force during connection can easily damage the flanges, affecting the fastening effect. In addition, the flange holes are prone to misalignment during flange connection and installation, which is time-consuming and laborious for operators.

[0005] 2. In most air preheaters, the cold and hot air pipes are used to transport and circulate hot air. However, the existing sealing structure at the connection points of the cold and hot air pipes is relatively simple, resulting in low sealing efficiency and affecting the efficiency of hot air transport. Utility Model Content

[0006] The purpose of this invention is to provide an air preheater with protective effects to solve the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the specific technical solution of this utility model is as follows: An air preheater with protective effect includes a housing, a fixing plate installed on the outside of the housing, a fixing sleeve fixedly connected to the outside of the fixing plate, a limiting rod inserted inside the fixing sleeve, a limiting block fixedly connected to the bottom of the limiting rod, a spring welded to the bottom of the limiting block, a fixing plate fixedly connected to the other end of the spring, the limiting rod passing through the inside of a limiting hole, the limiting hole being opened outside a flange, a limiting ring fixedly connected to the surface of the limiting rod, and a flange hole being opened outside the flange.

[0008] Preferably, the outer side of the housing is connected to a connecting block via a rotating shaft. The connecting block is fixedly connected to the side of the sealing ring. There are two sealing rings. A fixing block is installed on the outer side of the sealing ring. A bolt passes through the inside of the fixing block. A sealing gasket is installed on the surface of the sealing ring and fits against the surface of the mounting ring.

[0009] Preferably, two mounting rings are installed on the outside of the housing. A hot air pipe is fixedly connected to the outside of each mounting ring, and a cold air pipe is fixedly connected to the outside of each mounting ring.

[0010] Preferably, a smoke inlet pipe is installed on the outside of the housing, a flange is installed on the outside of the smoke inlet pipe, and a smoke exhaust pipe is installed on the outside of the housing, with a flange installed on the outside of the smoke exhaust pipe.

[0011] Preferably, a mounting bracket is installed on the outside of the housing, and a connecting rod is fixedly connected to the side of the mounting bracket.

[0012] Preferably, a support foot is installed at the bottom of the fixing frame, and a gasket is fixedly connected to the bottom of the support foot.

[0013] The air preheater with protective effect according to this utility model has the following advantages:

[0014] 1. This protective air preheater is constructed by installing a fixing plate on the outside of the casing, fixing a fixing sleeve to the outside of the fixing plate, inserting a limiting rod inside the fixing sleeve, fixing a limiting block to the bottom of the limiting rod, welding a spring to the bottom of the limiting block, and fixing the other end of the spring to the fixing plate. The limiting rod passes through a limiting hole located outside the flange. A limiting ring is then fixedly connected to the surface of the limiting rod, and a flange hole is located outside the flange. Thus, during air preheater installation, the limiting rod can be aligned with the limiting hole on the opposite flange to achieve the desired protective effect. When the flange is impacted during the connection, the limiting hole of the opposite flange can be used to impact the limiting ring, causing the limiting block at the bottom of the limiting rod to slide inside the fixed sleeve and compress the spring. This buffers the impact force and prevents damage to the flange structure, thus protecting the flange. The limiting rod and limiting hole structure can be used to align the flange hole to prevent misalignment during installation. In this way, if the force is too great during the connection, the flange can be protected from damage and the fastening effect will not be affected. Furthermore, the flange hole is easy to align and is not prone to misalignment during flange installation, saving time and effort for the operator.

[0015] 2. This protective air preheater connects to a connecting block via a rotating shaft outside the casing. The connecting block is fixedly connected to the side of a sealing ring. Two sealing rings are provided. A fixing block is then installed outside the sealing rings, with bolts penetrating its interior. A sealing gasket is then installed on the surface of the sealing rings, fitting snugly against the ring surface. When the air preheater is supplying hot gas, the connecting block's rotating shaft flips the sealing rings, and the fixing block and bolts secure the two sealing rings, ensuring the sealing gasket is tightly fitted against the outside of the ring. This further enhances the sealing effect at the connection between the hot and cold gas pipes. This adds an extra layer of sealing to the connection between the hot and cold gas pipes, resulting in a high sealing effect without affecting the normal hot gas supply efficiency. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the mounting ring structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the sealing ring structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the fixing block structure of this utility model;

[0021] Figure 5 This is a schematic diagram of the limiting hole structure of this utility model;

[0022] Figure 6 This is a schematic diagram of the limiting rod structure of this utility model;

[0023] Figure 7 This is a schematic diagram of the spring structure of this utility model.

[0024] The markings in the diagram are as follows: 1. Shell; 2. Fixing frame; 3. Exhaust pipe; 4. Hot air pipe; 5. Inlet pipe; 6. Cold air pipe; 7. Mounting ring; 8. Connecting rod; 9. Support foot; 10. Gasket; 11. Sealing ring; 12. Connecting block; 13. Sealing gasket; 14. Fixing block; 15. Bolt; 16. Fixing plate; 17. Flange; 18. Flange hole; 19. Limiting hole; 20. Limiting rod; 21. Limiting ring; 22. Fixing sleeve; 23. Spring; 24. Limiting block. Detailed Implementation

[0025] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0026] In the description of the embodiments of this utility model, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0029] The following disclosure provides many different implementations or examples for different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0030] To better understand the purpose, structure, and function of this utility model, the following detailed description of an air preheater with protective effect, in conjunction with the accompanying drawings, is provided.

[0031] like Figures 1-7As shown, this utility model discloses an air preheater with protective function, comprising a housing 1, an external mounting plate 16, a fixed sleeve 22 fixedly connected to the external mounting plate 16, a limiting rod 20 inserted inside the fixed sleeve 22, a limiting block 24 fixedly connected to the bottom of the limiting rod 20, a spring 23 welded to the bottom of the limiting block 24, and the other end of the spring 23 fixedly connected to the mounting plate 16. The limiting rod 20 passes through the inside of a limiting hole 19, which is located outside a flange 17. A limiting ring 21 is fixedly connected to the surface of the limiting rod 20. A flange hole 18 is located outside the flange 17. Thus, when installing the air preheater, the limiting rod 20 can be aligned with the limiting hole 19 on the opposite flange 17. The limiting rod 20 is positioned so that when the flange 17 is impacted, the limiting hole 19 on the opposite flange 17 can impact the limiting ring 21, causing the limiting block 24 at the bottom of the limiting rod 20 to slide inside the fixed sleeve 22 and compress the spring 23. This buffers the impact force and prevents damage to the flange 17 structure, thus protecting the flange 17. The limiting rod 20 and the limiting hole 19 can be aligned with the flange hole 18 to prevent misalignment of the flange hole 18 during installation. In this way, if the force is too great during the connection, the flange 17 can be protected from damage and affect the fastening effect. Furthermore, the flange hole 18 is easy to align and not easily misaligned when installing the flange 17, saving time and effort for the operator.

[0032] The outer shell 1 is connected to the connecting block 12 via a rotating shaft. The connecting block 12 is fixedly connected to the side of the sealing ring 11. There are two sealing rings 11. A fixing block 14 is installed on the outside of the sealing ring 11. A bolt 15 passes through the inside of the fixing block 14. A sealing gasket 13 is installed on the surface of the sealing ring 11. The sealing gasket 13 fits against the surface of the mounting ring 7. When the air preheater is transporting hot gas, the sealing ring 11 is flipped by the rotating shaft of the connecting block 12, and the two sealing rings 11 are fixed by the fixing block 14 and the bolt 15. This makes the sealing gasket 13 fit tightly against the outside of the mounting ring 7, thereby further enhancing the sealing effect at the connection between the hot gas pipe 4 and the cold gas pipe 6. This adds an extra layer of sealing structure to the connection between the cold gas pipe 6 and the hot gas pipe 4. The sealing effect is high and will not affect the normal transport efficiency of hot gas.

[0033] Two mounting rings 7 are installed on the outside of the housing 1. The hot air pipe 4 and the cold air pipe 6 are fixedly connected to the outside of the mounting ring 7. The structure of the cold air pipe 6 and the hot air pipe 4 effectively delivers hot air.

[0034] A smoke inlet pipe 5 is installed on the outside of the housing 1, and a flange 17 is installed on the outside of the smoke inlet pipe 5. A smoke exhaust pipe 3 is installed on the outside of the housing 1, and a flange 17 is installed on the outside of the smoke exhaust pipe 3. Through the structure of the smoke inlet pipe 5 and the smoke exhaust pipe 3, the smoke inlet and smoke exhaust effects are effectively achieved.

[0035] A fixing bracket 2 is installed on the outside of the housing 1. A connecting rod 8 is fixedly connected to the side of the fixing bracket 2. The fixing bracket 2 and the connecting rod 8 effectively reinforce the housing 1.

[0036] The bottom of the fixed frame 2 is equipped with support feet 9, and the bottom of the support feet 9 is fixedly connected to the pads 10. Through the structure of the support feet 9 and the pads 10, the friction with the ground is increased, which effectively improves the stability of the shell 1 structure.

[0037] The working principle of this protective air preheater is as follows: First, a fixing plate 16 is installed outside the housing 1, and a fixing sleeve 22 is fixedly connected to the outside of the fixing plate 16. A limiting rod 20 is inserted inside the fixing sleeve 22. Next, a limiting block 24 is fixedly connected to the bottom of the limiting rod 20. A spring 23 is welded to the bottom of the limiting block 24, and the other end of the spring 23 is fixedly connected to the fixing plate 16. The limiting rod 20 passes through the limiting hole 19, which is located outside the flange 17. Then, the limiting rod 20... A fixed limiting ring 21 is attached to the surface, and a flange hole 18 is opened on the outside of the flange 17. This allows the limiting rod 20 to align with the limiting hole 19 on the opposite flange 17 during air preheater installation. In the event of a docking impact, the limiting hole 19 on the opposite flange 17 impacts the limiting ring 21, causing the bottom limiting block 24 of the limiting rod 20 to slide inside the fixed sleeve 22 and compress the spring 23. This buffers the impact docking force, preventing damage to the flange 17 structure and providing protection for the flange 17. Furthermore, the limiting rod 20 and the limiting ring 21 can be used to... Hole 19 is aligned with flange hole 18 to prevent misalignment of flange hole 18 during installation. This protects flange 17 from damage if excessive force is applied during connection, preventing compromise on the fastening effect. Furthermore, flange hole 18 is easily aligned during flange 17 installation, reducing the risk of misalignment and saving time and effort for operators. Secondly, a connecting block 12 can be connected to the outside of housing 1 via a rotating shaft, and the connecting block 12 is fixedly connected to the side of sealing ring 11. Two sealing rings 11 are provided. Then, a fixing block 14 is installed outside the sealing ring 11, with a through-bolt inside the fixing block 14. Bolt 15, and then install sealing gasket 13 on the surface of sealing ring 11. Sealing gasket 13 fits against the surface of mounting ring 7. When the air preheater is transporting hot gas, the sealing ring 11 is flipped by the shaft of connecting block 12, and the two sealing rings 11 are fixed by fixing block 14 and bolt 15, so that sealing gasket 13 fits tightly against the outside of mounting ring 7. This further enhances the sealing effect at the installation connection between hot gas pipe 4 and cold gas pipe 6. In this way, an additional sealing structure can be added to the installation connection between cold gas pipe 6 and hot gas pipe 4. Its sealing effect is high and will not affect the normal transport efficiency of hot gas.

[0038] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An air preheater with protective function, comprising a housing (1), characterized in that: A fixing plate (16) is installed on the outside of the housing (1). A fixing sleeve (22) is fixedly connected to the outside of the fixing plate (16). A limiting rod (20) is inserted inside the fixing sleeve (22). A limiting block (24) is fixedly connected to the bottom of the limiting rod (20). A spring (23) is welded to the bottom of the limiting block (24). The other end of the spring (23) is fixedly connected to the fixing plate (16). The limiting rod (20) passes through the inside of the limiting hole (19). The limiting hole (19) is opened outside the flange (17). A limiting ring (21) is fixedly connected to the surface of the limiting rod (20). A flange hole (18) is opened outside the flange (17).

2. The air preheater with protective effect according to claim 1, characterized in that: The outer side of the housing (1) is connected to the connecting block (12) via a rotating shaft. The connecting block (12) is fixedly connected to the side of the sealing ring (11). There are two sealing rings (11). A fixing block (14) is installed on the outside of the sealing ring (11). A bolt (15) passes through the inside of the fixing block (14). A sealing gasket (13) is installed on the surface of the sealing ring (11). The sealing gasket (13) fits against the surface of the mounting ring (7).

3. The air preheater with protective effect according to claim 1, characterized in that: The housing (1) is externally mounted with an installation ring (7), and there are two installation rings (7). The installation ring (7) is externally fixedly connected to a hot air pipe (4) and an externally fixedly connected to a cold air pipe (6).

4. The air preheater with protective effect according to claim 1, characterized in that: A smoke inlet pipe (5) is installed on the outside of the housing (1), and a flange (17) is installed on the outside of the smoke inlet pipe (5). A smoke exhaust pipe (3) is installed on the outside of the housing (1), and a flange (17) is installed on the outside of the smoke exhaust pipe (3).

5. The air preheater with protective effect according to claim 1, characterized in that: The housing (1) is externally mounted with a fixing bracket (2), and the fixing bracket (2) is fixedly connected to a connecting rod (8) on its side.

6. The air preheater with protective effect according to claim 5, characterized in that: The bottom of the fixed frame (2) is equipped with a support foot (9), and the bottom of the support foot (9) is fixedly connected with a gasket (10).

Images