Sealing structure of desulfurization chimney expansion joint

Abstract

The utility model belongs to heavy anti -corrosion technical field, and disclose desulfurization chimney expansion joint sealing structure, including fixed ring one, the outside fixed connection board of fixed ring one, the inside fixed nut of connection board, the inside screw of nut is equipped with screw rod, the upper end surface fixed of screw rod is equipped with handle, through screw rod, nut, handle, rotates handle and can accurately adjust the lifting height of screw rod, and when adjusting downward can push sealing element closely and fit the chimney wall of expansion joint both sides, form even and controllable sealing pressure, avoid the clearance leakage caused by the insufficient sealing pressure, or the damage of sealing element caused by excessive pressure.

Description

Technical Field

[0001] This utility model belongs to the field of heavy-duty anti-corrosion technology, specifically the sealing structure of expansion joints in desulfurization chimneys. Background Technology

[0002] A corrosion protection system for expansion joints of a steel inner cylinder chimney after wet desulfurization, disclosed in Publication No. CN202371736U, is characterized by comprising an inner corrosion protection system and an outer corrosion protection system for the steel inner cylinder. The inner corrosion protection system consists of a base coating layer, an adhesive layer, and an elastic organic sealing layer arranged sequentially from the inner cylinder inwards. The elastic organic sealing layer is fixed to the inner cylinder at both ends by metal strips and facing brick layers. The outer corrosion protection system consists of an organic sealing layer and a heat-resistant sealing layer arranged sequentially from the inner cylinder outwards. An adhesive layer covers the upper sides of the organic sealing layer and the heat-resistant sealing layer. The elastic organic sealing layer is arranged in an arc shape at the chimney expansion joint. The metal strip is fixed to the inner cylinder by titanium bolts, and the facing brick layer covers the metal strip and titanium bolts. Silicone adhesive is filled between the elastic organic sealing layer, the metal strip, and the facing brick layer.

[0003] If the aforementioned anti-corrosion system for the expansion joint of a steel inner cylinder chimney after wet desulfurization malfunctions during use, its complex structure and high altitude make detection and repair difficult, requiring specialized high-altitude work equipment and technicians, resulting in high maintenance costs. Furthermore, the maintenance process may affect the normal operation of the chimney.

[0004] Therefore, a sealing structure for the expansion joints of desulfurization chimneys is proposed to address the above problems. Utility Model Content

[0005] To address the problems mentioned in the background section, this utility model provides a sealing structure for expansion joints in desulfurization chimneys, which has the advantages of convenient installation and low cost.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for expansion joints in desulfurization chimneys, comprising a fixing ring, a connecting plate fixedly disposed on the outer side of the fixing ring, a nut fixedly disposed inside the connecting plate, a screw threaded inside the nut, and a rotating handle fixedly disposed on the upper end face of the screw thread. Through the screw thread and the nut, the structure has an adjustable characteristic. By rotating the rotating handle to change the position of the screw thread, it can adapt to expansion joints of desulfurization chimneys of different sizes or degrees of expansion and contraction, thereby enhancing the versatility and adaptability of the sealing structure.

[0007] Preferably, a rotating shaft is fixedly provided on the lower end face of the lead screw, and a connecting block is fixedly provided on the lower end face of the rotating shaft.

[0008] By adopting the above technical solution, the lead screw and the connecting block can rotate relative to each other through the rotating shaft. When the lead screw rotates, the connecting block will not rotate with it, thus avoiding interference or instability that may occur due to the rotation of the connecting block during the adjustment process, and ensuring the stability and reliability of the structure.

[0009] Preferably, a second fixing ring is fixedly provided at the right end of the connecting block, and an expansion groove is provided inside the first fixing ring.

[0010] By adopting the above technical solution, the expansion groove provides space for the sliding of the subsequent connecting ring, enabling relative expansion and contraction between the first fixed ring and the second fixed ring to adapt to the expansion and contraction changes of the chimney expansion joint, thereby enhancing the sealing structure's adaptability to expansion joint deformation.

[0011] Preferably, a connecting ring is slidably provided inside the telescopic groove, and a fixing groove is provided inside the fixing ring.

[0012] By adopting the above technical solution, the fixing groove provides space for the subsequent installation of other components, laying the foundation for further improving the function of the sealing structure.

[0013] Preferably, the fixing groove has a threaded hole inside, and a threaded rod is spirally arranged inside the threaded hole.

[0014] By adopting the above technical solution, a reliable fixing method is provided for fixing other components through the threaded rod, which can firmly install the relevant components in the fixing groove, ensuring the integrity and stability of the structure.

[0015] Preferably, a fixing bracket is fixedly provided on the outer side of the threaded rod, and the fixing bracket is fitted into the fixing groove.

[0016] By adopting the above technical solution, the fixing frame serves to support and fix components such as the sealing ring in a suitable position.

[0017] Preferably, a sealing ring is fixedly provided on the inner side of the fixing frame, and the threaded rod passes through the sealing ring. A sealing sleeve is fixedly provided on the lower end face of the fixing frame, and the sealing sleeve is made of elastic material.

[0018] By adopting the above technical solution, the sealing sleeve can better adapt to the deformation of the expansion joint, fill the gap of the expansion joint, and further enhance the sealing effect.

[0019] Preferably, a waterproof layer is fixedly provided on the outer side of the sealing sleeve, and the waterproof layer is a polyurethane waterproof coating.

[0020] By adopting the above technical solution and using polyurethane waterproof coating, it is possible to effectively prevent moisture from penetrating into the interior of the sealing structure, protect the sealing structure from water erosion, extend the service life of the sealing structure, and improve the reliability and stability of the entire desulfurization chimney expansion joint sealing structure.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses a lead screw, nut, and handle. Rotating the handle allows for precise adjustment of the lead screw's lifting height. When adjusted downwards, it pushes the sealing element to tightly fit against the chimney walls on both sides of the expansion joint, forming a uniform and controllable sealing pressure. This avoids gap leakage due to insufficient sealing pressure or damage to the sealing element due to excessive pressure.

[0022] 2. This utility model can effectively prevent the leakage of flue gas, water vapor, etc. from the gap between the threaded rod and the fixed frame through the sealing ring, thereby improving the sealing performance. The fixed frame can play a supporting and fixing role, fixing the sealing ring and other components in a suitable position. The connecting ring can play a buffering and connecting role when the chimney expansion joint expands and contracts, making the connection between the first fixed ring and the second fixed ring more flexible and stable. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the installation structure of the fixing bracket of this utility model; Figure 3 This is a schematic diagram of the installation structure of the threaded hole of this utility model; Figure 4 This is a schematic diagram of the installation structure of the telescopic groove of this utility model.

[0024] In the diagram: 1. Fixing ring one; 2. Nut; 3. Handle; 4. Shaft; 5. Connecting block; 6. Fixing ring two; 7. Fixing bracket; 8. Sealing ring; 9. Threaded rod; 10. Sealing sleeve; 11. Fixing groove; 12. Threaded hole; 13. Connecting ring; 14. Expansion groove; 15. Connecting plate; 16. Waterproof layer; 17. Lead screw. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] The following describes an embodiment of this utility model based on its overall structure.

[0027] like Figures 1 to 4 As shown, this utility model provides a sealing structure for the expansion joint of a desulfurization chimney, including a fixing ring 1. A connecting plate 15 is fixedly mounted on the outer side of the fixing ring 1. A nut 2 is fixedly mounted inside the connecting plate 15. A screw rod 17 is spirally mounted inside the nut 2. A handle 3 is fixedly mounted on the upper end face of the screw rod 17. By rotating the handle 3 through the screw rod 17, the nut 2, and the handle 3, the lifting height of the screw rod 17 can be precisely adjusted. When adjusted downwards, it can push the sealing element to tightly fit against the chimney wall on both sides of the expansion joint, forming a uniform and controllable sealing pressure, avoiding gap leakage due to insufficient sealing pressure or damage to the sealing element due to excessive pressure.

[0028] In this embodiment, a rotating shaft 4 is fixedly provided on the lower end face of the lead screw 17, and a connecting block 5 is fixedly provided on the lower end face of the rotating shaft 4. Through the rotating shaft 4, the lead screw 17 and the connecting block 5 can rotate relative to each other. When the lead screw 17 rotates, the connecting block 5 will not rotate with it, thus avoiding interference or instability that may occur due to the rotation of the connecting block 5 during the adjustment process, and ensuring the stability and reliability of the structure.

[0029] A second fixing ring 6 is fixedly provided at the right end of the connecting block 5. An expansion groove 14 is provided inside the first fixing ring 1. The expansion groove 14 provides space for the sliding of the subsequent connecting ring 13, so that the first fixing ring 1 and the second fixing ring 6 can achieve relative expansion and contraction to adapt to the expansion and contraction of the chimney expansion joint and enhance the sealing structure's adaptability to the deformation of the expansion joint.

[0030] The expansion groove 14 has a connecting ring 13 that slides inside, and the fixing ring 1 has a fixing groove 11 inside. The fixing groove 11 provides space for the subsequent installation of other components and lays the foundation for further improving the function of the sealing structure.

[0031] The fixing groove 11 has a threaded hole 12 inside, and a threaded rod 9 is spirally provided inside the threaded hole 12. The threaded rod 9 provides a reliable fixing method for fixing other components, which can firmly install the relevant components in the fixing groove 11, ensuring the integrity and stability of the structure.

[0032] A fixing bracket 7 is fixedly provided on the outer side of the threaded rod 9, and the fixing bracket 7 is fitted into the fixing groove 11. The fixing bracket 7 serves to support and fix the sealing ring 8 and other components in a suitable position.

[0033] A sealing ring 8 is fixedly provided on the inner side of the fixing frame 7, and the threaded rod 9 passes through the sealing ring 8. A sealing sleeve 10 is fixedly provided on the lower end face of the fixing frame 7. The sealing sleeve 10 is made of elastic material. Through the sealing sleeve 10, it can better adapt to the deformation of the expansion joint, fill the gap of the expansion joint, and further enhance the sealing effect.

[0034] A waterproof layer 16 is fixedly provided on the outside of the sealing sleeve 10. The waterproof layer 16 is a polyurethane waterproof coating. The polyurethane waterproof coating can effectively prevent water from penetrating into the interior of the sealing structure, protect the sealing structure from water erosion, extend the service life of the sealing structure, and improve the reliability and stability of the entire desulfurization chimney expansion joint sealing structure.

[0035] Working principle and process of desulfurization chimney expansion joint sealing structure: Before installation, ensure the connection between the fixing ring 1 and the desulfurization chimney is secure. Firmly fix the connecting plate 15 to the outside of the fixing ring 1. Then, install the nut 2 inside the connecting plate 15 to prepare for the subsequent installation of the screw rod 17. By rotating the handle 3, the screw rod 17 will rotate spirally within the nut 2. Since the lower end of the screw rod 17 is fixed with the shaft 4 and the connecting block 5, and the right end of the connecting block 5 is fixed with the fixing ring 6, the rotation of the screw rod 17 will cause the fixing ring 6 to move up and down. This allows the position of the fixing ring 6 to be adjusted according to the actual situation of the expansion joint, so that it adapts to the changes in the expansion joint along with the fixing ring 1. Slide the connecting ring 13 into the expansion groove 14 to provide initial connection and support for subsequent sealing work. Then, place the fixing bracket 7 into... In the fixing groove 11, the fixing bracket 7 is fitted into the fixing groove 11, and the threaded rod 9 is screwed into the threaded hole 12. As the threaded rod 9 rotates, the fixing bracket 7 is firmly fixed in the fixing ring 1. The sealing ring 8 fixed inside the fixing bracket 7 and the sealing sleeve 10 fixed at the lower end face begin to perform the sealing function. The sealing ring 8 performs the initial sealing of the expansion joint, while the sealing sleeve 10, because it is made of elastic material, can better adapt to the slight deformation of the expansion joint, further enhancing the sealing effect. The waterproof layer 16 on the outside of the sealing sleeve 10 is made of polyurethane waterproof coating, which can effectively prevent water penetration, protect the expansion joint sealing structure from water erosion, extend its service life, and ensure the long-term stable operation of the desulfurization chimney expansion joint sealing structure, thus playing the role of the desulfurization chimney expansion joint sealing structure.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for expansion joints of desulfurization chimneys, comprising a fixing ring (1), characterized in that: A connecting plate (15) is fixedly provided on the outer side of the fixing ring (1), a nut (2) is fixedly provided inside the connecting plate (15), a screw rod (17) is spirally provided inside the nut (2), and a rotating handle (3) is fixedly provided on the upper end face of the screw rod (17).

2. The sealing structure for expansion joints of desulfurization chimneys according to claim 1, characterized in that: The lower end face of the lead screw (17) is fixedly provided with a rotating shaft (4), and the lower end face of the rotating shaft (4) is fixedly provided with a connecting block (5).

3. The sealing structure for expansion joints of desulfurization chimneys according to claim 2, characterized in that: The right end of the connecting block (5) is fixedly provided with a second fixing ring (6), and the inside of the first fixing ring (1) is provided with a telescopic groove (14).

4. The sealing structure for expansion joints of desulfurization chimneys according to claim 3, characterized in that: The telescopic groove (14) is provided with a connecting ring (13) inside, and the fixed ring (1) is provided with a fixed groove (11) inside.

5. The sealing structure for expansion joints of desulfurization chimneys according to claim 4, characterized in that: The fixed groove (11) has a threaded hole (12) inside, and a threaded rod (9) is spirally provided inside the threaded hole (12).

6. The sealing structure for expansion joints of desulfurization chimneys according to claim 5, characterized in that: The threaded rod (9) is fixedly provided with a fixing bracket (7) on the outside, and the fixing bracket (7) is fitted into the fixing groove (11).

7. The sealing structure for expansion joints of desulfurization chimneys according to claim 6, characterized in that: A sealing ring (8) is fixedly provided on the inner side of the fixing frame (7), and the threaded rod (9) and the sealing ring (8) are connected through each other. A sealing sleeve (10) is fixedly provided on the lower end face of the fixing frame (7), and the sealing sleeve (10) is made of elastic material.

8. The sealing structure for expansion joints of desulfurization chimneys according to claim 7, characterized in that: A waterproof layer (16) is fixedly provided on the outside of the sealing sleeve (10), and the waterproof layer (16) is a polyurethane waterproof coating.

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