Purified flue expansion joint drainage interface structure of desulfurization system

Abstract

The utility model provides a desulfurization system clean flue expansion joint drainage connector structure which comprises an expansion joint drainage port, a through hole and a linkage groove are formed in the inner end of the expansion joint drainage port, a connecting screw is arranged at the inner end of the through hole, a linkage rod is arranged at the inner end of the linkage groove, and a connecting nut is arranged at the lower end of the linkage rod. A positioning spring is arranged at the upper end of the linkage rod, an adjusting screw hole is formed in the upper end of the positioning spring, an adjusting screw rod is arranged at the inner end of the adjusting screw hole, a hexagonal groove is formed in the upper end of the adjusting screw rod, and a sealing rubber plate is arranged at the upper end of the hexagonal groove; the number of the through holes and the number of the linkage grooves are both four. By means of the design of an existing thermal generator set, a scaffold is prevented from being erected when the expansion joint leaks water, the defect that water leakage can only be treated through up-down cooperation is overcome, the maintenance workload is reduced, the service life of the expansion joint is prolonged, and normal operation of a flue gas desulfurization system is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal power generating sets, in particular to a drainage interface structure of a clean flue expansion joint of a desulfurization system. Background Art

[0002] The drain outlet used in the non-metallic expansion joint of the flue of thermal power plants is a plastic or metal funnel-shaped drain outlet. The drain outlet is connected to the non-metallic expansion joint (skin) by a pressure plate. The skin of the expansion joint is clamped between the expansion joint frame and the pressure plate and fixed by bolts. A low-level drain outlet is set on the expansion joint, and the lower edge of the low-level drain outlet is connected to the drain pipe.

[0003] In the prior art, during the use of thermal power generating sets, since the existing expansion joint drain outlet is connected by bolts, it needs to be installed in coordination with the upper and lower parts. When the expansion joint drain outlet leaks during operation, it needs to be erected for repair, which is a large project and difficult to repair. Therefore, we have made improvements to this and proposed a desulfurization system clean flue expansion joint drainage interface structure. Summary of the Invention

[0004] The purpose of the utility model is to avoid setting up scaffolding when water leakage occurs in the expansion joint in accordance with the current design of the thermal power generating set, solve the problem that the leakage defect can only be handled by coordinating the upper and lower parts, reduce the maintenance workload, extend the life of the expansion joint, and ensure the normal operation of the flue gas desulfurization system.

[0005] In order to achieve the above-mentioned purpose of the utility model, the utility model provides the following technical solutions:

[0006] A desulfurization system clean flue expansion joint drainage interface structure is provided to improve the above-mentioned problem.

[0007] The specific application is as follows:

[0008] A desulfurization system clean flue expansion joint drainage interface structure includes an expansion joint drainage outlet, the inner end of the expansion joint drainage outlet is provided with a through hole and a linkage groove, the inner end of the through hole is provided with a connecting screw, the inner end of the linkage groove is provided with a linkage rod, the lower end of the linkage rod is provided with a connecting nut, a skin is provided between the connecting nut and the expansion joint drainage outlet, the inner end of the skin is provided with a cutout and a notch, the upper end of the linkage rod is provided with a positioning spring, the upper end of the positioning spring is provided with an adjusting screw hole, the inner end of the adjusting screw hole is provided with an adjusting screw, the upper end of the adjusting screw is provided with a hexagonal groove, and the upper end of the hexagonal groove is provided with a sealing rubber plate.

[0009] As the preferred technical solution of the present application, the number of through holes and linkage grooves is set to four groups, the four groups of through holes penetrate the upper and lower outer surfaces of the expansion joint drain outlet, the four groups of linkage grooves penetrate the lower outer surface of the expansion joint drain outlet, and the upper end of the linkage groove is penetrated by the adjusting screw hole.

[0010] As a preferred technical solution of the present application, the connecting screw and the connecting nut are threadedly connected, and the skin is wrapped around the outer ends of the connecting screw and the linkage rod through cuts and notches.

[0011] As a preferred technical solution of the present application, a square opening is provided in the middle of the incision, the square opening is wrapped around the outer end of the linkage rod, and the square opening runs through the upper and lower ends of the skin.

[0012] As a preferred technical solution of the present application, the upper end of the linkage rod is fixedly connected to one end of the positioning spring, and the other end of the positioning spring is fixed to the inner surface of the upper end of the linkage groove.

[0013] As a preferred technical solution of the present application, the adjusting screw hole and the adjusting screw are threadedly connected, the upper end of the adjusting screw is in contact with the sealing rubber plate, and the sealing rubber plate seals the upper end of the adjusting screw hole.

[0014] As a preferred technical solution of the present application, the hexagonal groove is embedded in the inner surface of the upper end of the adjusting screw.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the scheme of this application:

[0017] The expansion joint drain outlet is made of 2205 stainless steel as a whole, and the connecting nut is fixed on the drain outlet funnel flange, avoiding the defect that the upper and lower parts must be coordinated for installation because the connecting nut is not fixed during installation. When the nut is fixed on the flange, it only needs to be installed from the top, reducing the difficulty of disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the skin of the desulfurization system clean flue expansion joint drainage interface structure and the expansion joint drainage port separation structure provided in this application.

[0019] Figure 2 This is a schematic diagram of the overall structure of the drainage interface structure of the clean flue expansion joint of a desulfurization system provided in this application.

[0020] Figure 3 This is a side-sectioned enlarged structural diagram of the drainage interface structure of the clean flue expansion joint of a desulfurization system provided in this application.

[0021] Figure 4 A desulfurization system clean flue expansion joint drainage interface structure provided in this application Figure 3 Schematic diagram of the enlarged structure of A in the figure.

[0022] Figure 5 A desulfurization system clean flue expansion joint drainage interface structure provided in this application Figure 3 Side sectional front view of the connecting screw.

[0023] Indicated in the figure:

[0024] 1. Expansion joint drain outlet; 2. Skin; 3. Connecting screw; 4. Connecting nut; 5. Linkage rod; 6. Linkage groove; 7. Positioning spring; 8. Notch; 9. Notch; 10. Adjusting screw; 11. Adjusting screw hole; 12. Hexagonal groove; 13. Sealing rubber sheet; 14. Through hole. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0026] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention. It should be noted that the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other unless there is a conflict.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] like Figure 1-5 As shown, this embodiment proposes a desulfurization system clean flue expansion joint drainage interface structure, including an expansion joint drainage port 1, the inner end of the expansion joint drainage port 1 is provided with a through hole 14 and a linkage groove 6, the inner end of the through hole 14 is provided with a connecting screw 3, the inner end of the linkage groove 6 is provided with a linkage rod 5, the lower end of the linkage rod 5 is provided with a connecting nut 4, a skin 2 is provided between the connecting nut 4 and the expansion joint drainage port 1, the inner end of the skin 2 is provided with a cutout 9 and a notch 8, the upper end of the linkage rod 5 is provided with a positioning spring 7, the upper end of the positioning spring 7 is provided with an adjusting screw hole 11, the inner end of the adjusting screw hole 11 is provided with an adjusting screw 10, the upper end of the adjusting screw 10 is provided with a hexagonal groove 12, and the upper end of the hexagonal groove 12 is provided with a sealing rubber plate 13.

[0029] The expansion joint drain outlet 1 is a core component used to discharge condensed water or other liquids accumulated inside the expansion joint to ensure safe and efficient operation of the equipment.

[0030] The number of through holes 14 and linkage grooves 6 is set to four groups. Four groups of through holes 14 penetrate the upper and lower outer surfaces of the expansion joint drain outlet 1, and four groups of linkage grooves 6 penetrate the lower outer surface of the expansion joint drain outlet 1. The upper end of the linkage groove 6 is penetrated by the adjusting screw hole 11.

[0031] The through hole 14 allows the connecting screw 3 to pass through and be threadedly connected to the connecting nut 4;

[0032] The linkage groove 6 guides the movement path of the linkage rod 5 to achieve accurate positioning and movement of the linkage nut.

[0033] The connecting screw 3 is threadedly connected to the connecting nut 4 , and the skin 2 is wrapped around the outer ends of the connecting screw 3 and the linkage rod 5 through the cutout 9 and the notch 8 .

[0034] The connecting screw 3 and the connecting nut 4 are connected by threads, which not only fix the position of the skin 2, but also control the movement of the linkage rod 5, thereby adjusting the tightness and position of the skin 2 to ensure good sealing.

[0035] A square opening is provided in the middle of the cutout 9 , which wraps around the outer end of the linkage rod 5 and passes through the upper and lower ends of the skin 2 .

[0036] The special design on the skin 2 - the cutouts 9, the notches 8 and the square openings - fit tightly around the expansion joint drain outlet 1 and the connection components, providing additional waterproof and dustproof protection and enhancing the sealing performance.

[0037] The upper end of the linkage rod 5 is fixedly connected to one end of the positioning spring 7 , and the other end of the positioning spring 7 is fixed to the inner surface of the upper end of the linkage groove 6 .

[0038] The positioning spring 7 provides elastic support to ensure the proper position of the connecting component; the adjusting screw 10 fine-tunes the tension of the skin 2 through the adjusting screw hole 11 to achieve the best sealing state and prevent damage caused by excessive compression.

[0039] The adjusting screw hole 11 is threadedly connected to the adjusting screw rod 10 . The upper end of the adjusting screw rod 10 is in contact with the sealing rubber plate 13 . The sealing rubber plate 13 seals the upper end of the adjusting screw hole 11 .

[0040] The hexagonal groove 12 is embedded in the inner surface of the upper end of the adjusting screw 10 .

[0041] The hexagonal slot 12 facilitates the use of tools to screw the adjusting screw 10;

[0042] The sealing rubber plate 13 is used to finally seal the top of the adjusting screw hole 11 to prevent water infiltration and corrosion, thereby maintaining structural integrity and long-term stability.

[0043] When the present application is in use: the expansion joint drain outlet 1 is made of 2205 stainless steel as a whole, and the connecting nut 4 is limited on the drain outlet funnel flange by the linkage rod 5 and the linkage groove 6, so as to avoid the defect that the nut must be installed in an upper and lower manner because the nut is not fixed during installation. When the connecting screw 3 moves downward along the connecting nut 4 thread, the position of the connecting nut 4 is first limited. Under the limitation of the linkage rod 5, the connecting nut 4 moves upward along the linkage groove 6 until the positioning spring 7 contracts and the upper end of the linkage rod 5 contacts the bottom surface of the adjusting screw 10. At this time, the position of the connecting nut 4 is fixed, and it can be well wrapped around the outer end of the skin 2 without squeezing the skin 2. The effect of excessive pressure (in this process, the distance between the adjusting screw 10 and the top of the initial linkage rod 5 is slightly smaller than the thickness of the skin 2, which helps to wrap the skin 2 between the expansion joint drain port 1 and the connecting nut 4 through the incision 9 and the notch 8, and at the same time can well position the skin 2 to prevent excessive squeezing, which causes the interface of the skin 2 to be squeezed and deformed, resulting in the interface becoming larger, thereby affecting the sealing effect. After the position of the adjusting screw 10 is fixed, the top of the adjusting screw hole 11 is sealed by the sealing rubber plate 13 to prevent rust and water leakage), continue to rotate the connecting nut 4 until the connecting nut 4 is completely penetrated and the expansion joint drain port 1 is installed stably;

[0044] Such a single-sided operation mode can better avoid the need to set up scaffolding when the expansion joint leaks, solve the problem of upper and lower coordination to deal with the leakage defect, reduce the maintenance workload, and all steps only require single-sided operation, which extends the life of the expansion joint and ensures the normal operation of the flue gas desulfurization system.

[0045] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements thereof that do not depart from the spirit and scope of the present invention are included in the scope of the claims of the present invention.

Claims

1. A desulfurization system clean flue expansion joint drainage interface structure, comprising an expansion joint drainage port (1), characterized in that: The inner end of the expansion joint drain outlet (1) is provided with a through hole (14) and a linkage groove (6), the inner end of the through hole (14) is provided with a connecting screw (3), the inner end of the linkage groove (6) is provided with a linkage rod (5), the lower end of the linkage rod (5) is provided with a connecting nut (4), a skin (2) is provided between the connecting nut (4) and the expansion joint drain outlet (1), the inner end of the skin (2) is provided with a cutout (9) and a notch (8), the upper end of the linkage rod (5) is provided with a positioning spring (7), the upper end of the positioning spring (7) is provided with an adjusting screw hole (11), the inner end of the adjusting screw hole (11) is provided with an adjusting screw (10), the upper end of the adjusting screw (10) is provided with a hexagonal groove (12), and the upper end of the hexagonal groove (12) is provided with a sealing rubber plate (13).

2. A desulfurization system clean flue expansion joint drainage interface structure according to claim 1, characterized in that: The number of the through holes (14) and the linkage grooves (6) is set to four groups. The four groups of through holes (14) penetrate the upper and lower outer surfaces of the expansion joint drain outlet (1). The four groups of linkage grooves (6) penetrate the lower outer surface of the expansion joint drain outlet (1). The upper ends of the linkage grooves (6) are penetrated by the adjusting screw holes (11).

3. A desulfurization system clean flue expansion joint drainage interface structure according to claim 2, characterized in that: The connecting screw (3) and the connecting nut (4) are threadedly connected, and the skin (2) is wrapped around the outer ends of the connecting screw (3) and the linkage rod (5) through the cutout (9) and the notch (8).

4. A desulfurization system clean flue expansion joint drainage interface structure according to claim 3, characterized in that: A square opening is provided in the middle of the cutout (9), the square opening wraps around the outer end of the linkage rod (5), and the square opening passes through the upper and lower ends of the skin (2).

5. A desulfurization system clean flue expansion joint drainage interface structure according to claim 4, characterized in that: The upper end of the linkage rod (5) is fixedly connected to one end of the positioning spring (7), and the other end of the positioning spring (7) is fixed to the inner surface of the upper end of the linkage groove (6).

6. A desulfurization system clean flue expansion joint drainage interface structure according to claim 5, characterized in that: The adjusting screw hole (11) is threadedly connected to the adjusting screw rod (10), the upper end of the adjusting screw rod (10) is in contact with the sealing rubber plate (13), and the sealing rubber plate (13) seals the upper end of the adjusting screw hole (11).

7. A desulfurization system clean flue expansion joint drainage interface structure according to claim 6, characterized in that: The hexagonal groove (12) is embedded in the inner surface of the upper end of the adjusting screw (10).

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