Boiler rotary valve expansion joint
By moving the skin installation position outward in the boiler rotary valve expansion joint and combining it with fasteners and reinforcing ribs, the problem of skin damage due to high temperature was solved, thus improving the durability and safety of the skin.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHAOXING QINGNENG ENVIRONMENTAL PROTECTION CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-04-24
AI Technical Summary
The skin of the boiler rotary valve expansion joint is easily damaged due to its proximity to the discharge port and high temperature, resulting in an unsafe working environment and difficult maintenance.
A boiler rotary valve expansion joint structure was designed. By moving the installation position of the skin outward and using a combination of fasteners and reinforcing ribs, the working temperature of the skin is reduced, and ash and slag are guided into the mounting base below through a guide frame to avoid ash and slag accumulation.
It effectively reduces the operating temperature of the skin, extends its service life, improves safety, and reduces maintenance workload, achieving a dual improvement in safety and economy.
Smart Images
Figure CN224162258U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of expansion joint technology, and more specifically, to a boiler rotary valve expansion joint. Background Technology
[0002] The expansion joint installed on the boiler's rotary valve has its skin positioned near the discharge port. The ash and slag discharged from the discharge port are at high temperatures, resulting in a high operating temperature for the skin and making it prone to damage. During the boiler's operating cycle, the expansion joint skin may develop holes, cracks, or other degrees of damage. High-temperature ash and slag spray out from the damaged areas, severely impacting the working environment and posing a threat to the personal safety of maintenance and cleaning personnel. Utility Model Content
[0003] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a boiler rotary valve expansion joint.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] This utility model discloses a boiler rotary valve expansion joint, including two mounting seats. Each mounting seat includes a mounting plate and an extension plate connected to the mounting plate. The extension plates of the two mounting seats are arranged close to each other, and a skin is provided between the two mounting seats. The end of the skin is installed on the outer periphery of the extension plate by a fastener. A guide frame is provided on the side of the extension plate away from the mounting plate, and part of the guide frame of the upper mounting seat extends into the guide frame of the lower mounting seat.
[0006] Furthermore, a fixing plate is provided on the upper part of the extension plate, the fixing plate is provided along the outer periphery of the extension plate, the end of the skin is located between the fixing member and the fixing plate, and the fixing member is connected to the fixing plate by fixing bolts.
[0007] Furthermore, the fastener includes two fixing frames, the shape of which is set according to the outer periphery of the fixing plate.
[0008] Furthermore, the ends of the two fixed frames are positioned opposite each other, with a gap between the ends of the two fixed frames.
[0009] Furthermore, a connecting plate is connected between the mounting plate and the extension plate. The upper end of the connecting plate is connected to the inner side of the lower part of the mounting plate, and the lower end of the connecting plate is connected to the inner side of the upper part of the extension plate. Several reinforcing ribs are connected to the outer periphery of the connecting plate. The upper end of the reinforcing ribs is connected to the lower part of the mounting plate, and the lower end of the reinforcing ribs is connected to the upper part of the extension plate.
[0010] Furthermore, the mounting plate has several mounting holes for connecting to the equipment.
[0011] Furthermore, the fixed frame is externally connected to angle irons, and a screw rod passes between the two opposing angle irons. The part of the screw rod that passes through the angle iron is threaded with a nut.
[0012] Furthermore, the end of the skin is positioned to bypass the end of the fixing plate, and the fixing bolts pass through the portion of the skin that bypasses the fixing plate.
[0013] The beneficial effects of this utility model are: the installation position of the skin is moved outward, thereby reducing the working temperature, making it less prone to damage due to high temperature, and extending its service life. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of a structure of the boiler rotary valve expansion joint in this embodiment;
[0015] Figure 2 This is a top view of the boiler rotary valve expansion joint in this embodiment;
[0016] Figure 3 This is a cross-sectional view of the boiler rotary valve expansion joint in this embodiment;
[0017] Figure 4 This is another cross-sectional view of the boiler rotary valve expansion joint in this embodiment;
[0018] Figure 5 for Figure 4 Enlarged diagram of point A in the middle.
[0019] Reference numerals: 1. Mounting base; 2. Skin; 3. Fixing frame; 4. Fixing bolt; 5. Mounting plate; 6. Extension plate; 7. Connecting plate; 8. Fixing plate; 9. Mounting hole; 10. Reinforcing rib; 11. Angle iron; 12. Screw; 13. Nut; 14. Pressure block; 15. Guide frame. Detailed Implementation
[0020] 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.
[0021] like Figures 1-3As shown, a boiler rotary valve expansion joint includes two mounting seats 1. Each mounting seat 1 includes a mounting plate 5 and an extension plate 6 connected to the mounting plate 5. The outer periphery of the extension plate 6 is 8-12 cm away from the outer periphery of the mounting plate 5. The extension plates 6 of the two mounting seats 1 are positioned relatively close to each other. A skin 2 is provided between the two mounting seats 1. The end of the skin 2 is fixed to the outer periphery of the extension plate 6 by a fixing frame 3. The skin 2 is installed on the outer periphery of the extension plate 6, which moves its installation position outward, thereby increasing the distance between the skin 2 and the ash slag, thus reducing the working temperature of the skin 2, solving the problem of easy damage to the skin 2, extending the service life of the skin 2, reducing the workload of maintenance workers, and achieving a dual improvement in safety and economy.
[0022] A guide frame 15 is installed on the inner side of the extension plate 6. The guide frames 15 of the upper and lower mounting seats 1 are of different sizes. Part of the guide frame 15 of the upper mounting seat 1 can extend into the guide frame 15 of the lower mounting seat 1. The two cooperate to guide the ash and slag directly from the upper mounting seat 1 into the lower mounting seat 1, preventing the ash and slag from remaining between the two mounting seats 1. A gap is left between the two guide frames 15 so that they can slide relative to each other as the mounting seats 1 move. At the same time, the gap between the two guide frames 15 should be as small as possible to prevent ash and slag from passing through the gap.
[0023] A fixing plate 8 is provided on the upper part of the extension plate 6. The fixing plate 8 is arranged along the outer periphery of the extension plate 6. The end of the skin 2 is located between the fixing member and the fixing plate 8. The fixing member is connected to the fixing plate 8 by fixing bolts 4. The fixing bolts 4 are set through the skin 2. The end of the skin 2 is clamped by the fixing member and the fixing plate 8, thereby fixing the skin 2 between the two mounting seats 1.
[0024] The fastener includes two fixing frames 3, which are divided into two parts for easy installation and disassembly. The shape of the fixing frame 3 is set according to the outer periphery of the fixing plate 8, so that the fixing frame 3 can better fit the fixing plate 8 to clamp the skin 2, while avoiding gaps between the skin 2 and the fixing plate 8, thereby maintaining a good seal.
[0025] The ends of the two fixed frames 3 are arranged opposite each other, with a gap between the ends of the two fixed frames 3 to prevent the ends of the fixed frames 3 from hitting each other and being damaged when they deform.
[0026] A connecting plate 7 connects the mounting plate 5 and the extension plate 6. The upper end of the connecting plate 7 is connected to the inner side of the lower part of the mounting plate 5, and the lower end of the connecting plate 7 is connected to the inner side of the upper part of the extension plate 6. Several reinforcing ribs 10 are connected to the outer periphery of the connecting plate 7. The upper end of the reinforcing ribs 10 is connected to the lower part of the mounting plate 5, and the lower end of the reinforcing ribs 10 is connected to the upper part of the extension plate 6. The reinforcing ribs 10 are used to strengthen the structural rigidity.
[0027] The mounting plate 5 has several mounting holes 9 for connecting to the equipment.
[0028] like Figure 4 , Figure 5 As shown, in another embodiment, the fixing frame 3 is externally connected to an angle iron 11, and a screw 12 passes between two opposing angle irons 11. The portion of the screw 12 that passes through the angle iron 11 is threadedly connected to a nut 13. The nut 13 can abut against the angle iron 11, thereby achieving a limit and preventing the skin 2 from being pulled off due to excessive distance between the two mounting seats 1.
[0029] One screw 12 is provided on each of the four sides, thereby protecting the skin 2 at all four sides.
[0030] The four corners of the extension plate 6 are rounded. Correspondingly, the corners of the fixing plate 8 and the fixing frame 3 are also rounded according to the extension plate 6 to protect the staff and prevent them from being injured by sharp corners.
[0031] like Figure 5 As shown, in another embodiment, the end of the skin 2 is arranged to bypass the end of the fixing plate 8, and the fixing bolt 4 passes through the two layers to fix the end of the skin 2, which increases the fixing strength, better prevents the upper end of the skin 2 from slipping between the fixing frame 3 and the fixing plate 8, and also increases the sealing performance.
[0032] A pressure block 14 is connected to the upper end of the fixed frame 3. The pressure block 14 presses down on the part of the skin 2 that passes around the upper end of the fixed plate 8. The fixing bolt 4 is set through the pressure block 14. The pressure block 14 can further increase the firmness of the fixation of the end of the skin 2.
[0033] 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 boiler rotary valve expansion joint, characterized in that, It includes two mounting bases (1), each mounting base (1) including a mounting plate (5) and an extension plate (6) connected to the mounting plate (5). The extension plates (6) of the two mounting bases (1) are arranged close to each other, and a skin (2) is provided between the two mounting bases (1). The end of the skin (2) is installed on the outer periphery of the extension plate (6) by a fastener. A guide frame (15) is provided on the side of the extension plate (6) away from the mounting plate (5). A portion of the guide frame (15) of the upper mounting base (1) extends into the guide frame (15) of the lower mounting base (1).
2. The boiler rotary valve expansion joint according to claim 1, characterized in that, A fixing plate (8) is provided on the upper part of the extension plate (6). The fixing plate (8) is arranged along the outer periphery of the extension plate (6). The end of the skin (2) is located between the fixing member and the fixing plate (8). The fixing member is connected to the fixing plate (8) by fixing bolts (4).
3. A boiler rotary valve expansion joint according to claim 1 or 2, characterized in that, The fastener includes two fixing frames (3), the shape of which is set according to the outer periphery of the fixing plate (8).
4. The boiler rotary valve expansion joint according to claim 3, characterized in that, The ends of the two fixed frames (3) are set opposite each other, and a gap is left between the ends of the two fixed frames (3).
5. The boiler rotary valve expansion joint according to claim 1, characterized in that, A connecting plate (7) is connected between the mounting plate (5) and the extension plate (6). The upper end of the connecting plate (7) is connected to the inner side of the lower part of the mounting plate (5), and the lower end of the connecting plate (7) is connected to the inner side of the upper part of the extension plate (6). Several reinforcing ribs (10) are connected to the outer periphery of the connecting plate (7). The upper end of the reinforcing ribs (10) is connected to the lower part of the mounting plate (5), and the lower end of the reinforcing ribs (10) is connected to the upper part of the extension plate (6).
6. A boiler rotary valve expansion joint according to claim 1 or 5, characterized in that, The mounting plate (5) has several mounting holes (9).
7. The boiler rotary valve expansion joint according to claim 3, characterized in that, Angle iron (11) is connected to the outside of the fixed frame (3). A screw (12) is inserted between the two opposite angle irons (11). A nut (13) is threaded through the part of the screw (12) that passes through the angle iron (11).
8. The boiler rotary valve expansion joint according to claim 1, characterized in that, The end of the skin (2) is disposed around the end of the fixing plate (8).