Modular power plant boiler water wall

Abstract

The utility model relates to a modularization power station boiler water cooling wall belongs to power station boiler water cooling wall construction technical field. Including upper layer water cooling wall monomer and lower layer water cooling wall monomer, the bottom end of lower layer furnace wall water cooling wall pipe is integrally provided with second extension pipe, the upper end of second extension pipe is connected with the bottom end welding of first extension pipe, the outside of first extension pipe and second extension pipe is coated with reinforcing structure, the both ends of reinforcing structure are fixed with front side connecting piece and rear side connecting piece respectively. The utility model has the advantages of following: first extension pipe and second extension pipe weld after, can through reinforcing structure, can effectively reinforce the reinforcement to the junction, and through front side connecting piece, rear side connecting piece fixes reinforcing structure, through the cooperation of above-mentioned subassembly, fixes and spacing upper layer water cooling wall monomer and lower layer water cooling wall monomer, improves the stability after modularization power station boiler water cooling wall assembly, avoids the loosening, is favorable to long -term use.

Description

Technical Field

[0001] This utility model relates to a modular water-cooled wall for power plant boilers, belonging to the field of construction technology for water-cooled walls of power plant boilers. Background Technology

[0002] The heating surfaces arranged on the inner wall of the furnace that are primarily cooled by water are called water-cooled walls. Water-cooled walls are the main heating component of the boiler, consisting of several rows of steel pipes distributed around the perimeter of the boiler furnace. Their interior is filled with flowing water or steam, while they receive heat from the flames in the furnace. They primarily absorb the radiant heat from the high-temperature combustion products within the furnace.

[0003] Reference Figure 5 Existing modular power plant boiler water-cooled walls, including upper and lower water-cooled wall units, have a first extension pipe integrally installed at the bottom end of the upper furnace wall water-cooled wall tubes, and a second extension pipe integrally installed at the bottom end of the lower furnace wall water-cooled wall tubes. The upper end of the second extension pipe is welded to the bottom end of the first extension pipe. Current technology is not comprehensive and has the following drawbacks: 1. The weld joint between the second and first extension pipes has low strength, insufficient support capacity, and poor structural stability. 2. Currently, most reinforcement methods involve thickening the weld joint through re-welding. For already assembled modular power plant boiler water-cooled wall units, this additional reinforcement not only increases production costs but also makes disassembly and maintenance of the welded material inconvenient.

[0004] To solve one of the above problems, a modular water-cooled wall for power plant boilers is urgently needed. Utility Model Content

[0005] Based on the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to effectively reinforce the connection through the reinforcement structure, and fix the reinforcement structure through the front and rear connecting parts. Through the synergistic effect of the above components, the stability of the modular power plant boiler water-cooled wall after assembly is improved, which is conducive to long-term use. Therefore, a modular power plant boiler water-cooled wall is provided.

[0006] The modular power plant boiler water-cooled wall of this utility model includes an upper water-cooled wall unit and a lower water-cooled wall unit. The upper water-cooled wall unit comprises multiple sets of adjacent upper furnace wall water-cooled wall tubes, with furnace wall water-cooled wall fins A positioned between adjacent upper furnace wall water-cooled wall tubes. A first extension tube is integrally provided at the bottom end of each upper furnace wall water-cooled wall tube. The lower water-cooled wall unit comprises multiple sets of adjacent lower furnace wall water-cooled wall tubes, with furnace wall water-cooled wall fins B positioned between adjacent lower furnace wall water-cooled wall tubes. A second extension tube is integrally provided at the bottom end of each lower furnace wall water-cooled wall tube. The upper end of the second extension tube is welded to the bottom end of the first extension tube. A reinforcing structure covers the outer sides of both the first and second extension tubes, and front and rear connecting parts are fixed to the two ends of the reinforcing structure, respectively.

[0007] After the first and second extension tubes are welded, the connection can be effectively reinforced by the reinforcement structure. The reinforcement structure is fixed by the front and rear connectors. Through the synergistic effect of the above components, the upper and lower water-cooled wall units are fixed and limited, which improves the stability of the modular power plant boiler water-cooled wall assembly, avoids loosening, and is conducive to long-term use.

[0008] In any of the above embodiments, it is preferred that the furnace wall water-cooled wall fin A is welded to the upper furnace wall water-cooled wall tube, and the furnace wall water-cooled wall fin B is welded to the lower furnace wall water-cooled wall tube.

[0009] In any of the above embodiments, it is preferred that the upper and lower ends of the front connecting member are fixedly connected to the furnace wall water-cooled wall fins A and B, respectively, and the upper and lower ends of the rear connecting member are fixedly connected to the furnace wall water-cooled wall fins A and B, respectively. Each component can be individually processed and assembled; the fixed installation simplifies the assembly process, and the simple structure reduces complex processing requirements and lowers manufacturing costs.

[0010] In any of the above embodiments, preferably, the front connecting member includes a vertical segment A, the upper and lower ends of the vertical segment A are bent to form a horizontal segment A and a horizontal segment B, respectively, the top end of the horizontal segment A is bent to form a vertical fixing plate A, and the bottom end of the horizontal segment B is bent to form a vertical fixing plate B; the rear connecting member includes a vertical segment B, the upper and lower ends of the vertical segment B are bent to form a horizontal segment C and a horizontal segment D, the top end of the horizontal segment C is bent to form a vertical fixing plate C, and the bottom end of the horizontal segment D is bent to form a vertical fixing plate D.

[0011] In any of the above embodiments, it is preferred to further include an upper fixing stud and a lower fixing stud. One end of the upper fixing stud is welded to the vertical fixing plate C, and the other end passes through the furnace wall water-cooled wall fin A and the vertical fixing plate A in sequence, and is threaded to the nut A, connecting the vertical fixing plate C, the furnace wall water-cooled wall fin A, and the vertical fixing plate A together. One end of the lower fixing stud is connected to the vertical fixing plate D, and the other end of the vertical fixing plate D passes through the furnace wall water-cooled wall fin B and the vertical fixing plate B in sequence, and is threaded to the nut B, connecting the vertical fixing plate D, the furnace wall water-cooled wall fin B, and the vertical fixing plate B together.

[0012] Each component can be processed and assembled individually. The through-type installation of the stud simplifies the assembly process, and the simple structure reduces complex processing requirements and lowers manufacturing costs.

[0013] In any of the above embodiments, it is preferred that the reinforcing structure includes a first clamping plate and a second clamping plate arranged opposite to each other. A pipe groove A is formed on the inner end face of the first clamping plate, and a pipe groove B is formed on the inner end face of the second clamping plate. The corresponding pipe groove A and the cooperating pipe groove B form a clamping hole for clamping the first extension pipe and the second extension pipe. One end of the column fixing stud is welded to the vertical section B, and the other end passes through the second clamping plate, the first clamping plate, and the vertical section A in sequence and is threaded to the nut C. The first clamping plate is clamped in the clamping area enclosed by the vertical section A, the horizontal section A, and the horizontal section B, and the second clamping plate is clamped in the clamping area enclosed by the vertical section B, the horizontal section C, and the horizontal section D.

[0014] In any of the above embodiments, it is preferred that the corresponding location where the clamping hole is welded to the first extension tube and the second extension tube has a clearance hole, the inner diameter of which is larger than the inner diameter of the clamping hole.

[0015] In any of the above embodiments, it is preferred that the front and rear connecting parts are formed by bending metal plates, the first and second clamping plates are made of refractory bricks or metal plates, and the pipe grooves A and B are evenly distributed along the length directions of the first and second clamping plates, respectively. The materials are simple and readily available, reducing manufacturing costs.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The modular power plant boiler water-cooled wall of this utility model, after the first extension tube and the second extension tube are welded, can effectively reinforce the connection through the reinforcement structure. The reinforcement structure is fixed by the front and rear connecting parts. Through the synergistic effect of the above components, the upper and lower water-cooled wall units are fixed and limited, which improves the stability of the modular power plant boiler water-cooled wall after assembly, avoids loosening, and is conducive to long-term use.

[0017] The modular power plant boiler water-cooled wall of this utility model includes upper fixed studs and lower fixed studs. Each component can be processed and assembled separately. The through-type installation of the studs simplifies the assembly process, and the simple structure reduces complex processing requirements and lowers manufacturing costs.

[0018] The modular power plant boiler water-cooled wall described in this utility model has a simple principle. The reinforcement structure can significantly strengthen and improve the strength of the boiler water-cooled wall connection without changing the existing boiler water-cooled wall, ensuring the normal use function of the boiler water-cooled wall product and improving product quality. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of section AA; Figure 3 This is a cross-sectional view of the clamping hole; Figure 4 This is a diagram showing the assembly of the first and second clamping plates. Figure 5 This is a connection diagram for the water-cooled wall of an existing modular power plant boiler.

[0021] In the diagram: 1. Furnace wall water-cooled wall fin A; 2. Upper furnace wall water-cooled wall tube; 3. First extension tube; 4. Furnace wall water-cooled wall fin B; 5. Lower furnace wall water-cooled wall tube; 6. Second extension tube; 7. Front connector; 7.1. Vertical section A; 7.2. Horizontal section A; 7.3. Horizontal section B; 7.4. Vertical fixing plate A; 7.5. Vertical fixing plate B; 8. Rear connector; 8.1. Vertical section B; 8.2. Horizontal section C; 8.3. Horizontal section D; 8.4. Vertical fixing plate C; 8.5. Vertical fixing plate D; 9. Upper fixing stud; 10. Nut A; 11. Lower fixing stud; 12. Nut B; 13. First clamping plate; 14. Second clamping plate; 15. Tube groove A; 16. Tube groove B; 17. Column fixing stud; 18. Nut C. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0023] Example 1, as Figure 1-2 As shown, the modular power plant boiler water-cooled wall includes an upper water-cooled wall unit and a lower water-cooled wall unit. The upper water-cooled wall unit includes multiple sets of adjacent upper furnace wall water-cooled wall tubes 2. Furnace wall water-cooled wall fins A1 are arranged between adjacent upper furnace wall water-cooled wall tubes 2. A first extension tube 3 is integrally provided at the bottom end of the upper furnace wall water-cooled wall tube 2. The lower water-cooled wall unit includes multiple sets of adjacent lower furnace wall water-cooled wall tubes 5. Furnace wall water-cooled wall fins B4 are arranged between adjacent lower furnace wall water-cooled wall tubes 5. A second extension tube 6 is integrally provided at the bottom end of the lower furnace wall water-cooled wall tube 5. The upper end of the second extension tube 6 is welded to the bottom end of the first extension tube 3. The outer sides of the first extension tube 3 and the second extension tube 6 are covered with a reinforcing structure. A front connector 7 and a rear connector 8 are respectively fixed at both ends of the reinforcing structure.

[0024] After the first extension tube 3 and the second extension tube 6 are welded, the connection can be effectively reinforced by the reinforcement structure. The reinforcement structure is fixed by the front connector 7 and the rear connector 8. Through the synergistic effect of the above components, the upper water-cooled wall unit and the lower water-cooled wall unit are fixed and limited, which improves the stability of the modular power plant boiler water-cooled wall after assembly, avoids loosening, and is conducive to long-term use.

[0025] Example 2, as Figure 1-2 As shown, the modular power plant boiler water-cooled wall includes an upper water-cooled wall unit and a lower water-cooled wall unit. The upper water-cooled wall unit includes multiple sets of adjacent upper furnace wall water-cooled wall tubes 2. Furnace wall water-cooled wall fins A1 are arranged between adjacent upper furnace wall water-cooled wall tubes 2. A first extension tube 3 is integrally provided at the bottom end of the upper furnace wall water-cooled wall tube 2. The lower water-cooled wall unit includes multiple sets of adjacent lower furnace wall water-cooled wall tubes 5. Furnace wall water-cooled wall fins B4 are arranged between adjacent lower furnace wall water-cooled wall tubes 5. A second extension tube 6 is integrally provided at the bottom end of the lower furnace wall water-cooled wall tube 5. The upper end of the second extension tube 6 is welded to the bottom end of the first extension tube 3. The outer sides of the first extension tube 3 and the second extension tube 6 are covered with a reinforcing structure. A front connector 7 and a rear connector 8 are respectively fixed at both ends of the reinforcing structure.

[0026] Furthermore, the furnace wall water-cooled wall fins A1 are welded to the upper furnace wall water-cooled wall tubes 2, and the furnace wall water-cooled wall fins B4 are welded to the lower furnace wall water-cooled wall tubes 5.

[0027] Furthermore, the upper and lower ends of the front connecting member 7 are fixedly connected to the furnace wall water-cooled wall fins A1 and B4, respectively, and the upper and lower ends of the rear connecting member 8 are fixedly connected to the furnace wall water-cooled wall fins A1 and B4, respectively. Each component can be individually processed and assembled; the fixed installation simplifies the assembly process, and the simple structure reduces complex processing requirements and lowers manufacturing costs.

[0028] Further, the front connecting member 7 includes a vertical segment A7.1, the upper and lower ends of the vertical segment A7.1 are bent to form horizontal segments A7.2 and B7.3 respectively, the top end of the horizontal segment A7.2 is bent to form a vertical fixing plate A7.4, and the bottom end of the horizontal segment B7.3 is bent to form a vertical fixing plate B7.5; the rear connecting member 8 includes a vertical segment B8.1, the upper and lower ends of the vertical segment B8.1 are bent to form horizontal segments C8.2 and D8.3 respectively, the top end of the horizontal segment C8.2 is bent to form a vertical fixing plate C8.4, and the bottom end of the horizontal segment D8.3 is bent to form a vertical fixing plate D8.5.

[0029] Furthermore, it also includes an upper fixing stud 9 and a lower fixing stud 11. One end of the upper fixing stud 9 is welded to the vertical fixing plate C8.4, and the other end passes through the furnace wall water-cooled wall fin A1 and the vertical fixing plate A7.4 in sequence, and is threaded to the nut A10, connecting the vertical fixing plate C8.4, the furnace wall water-cooled wall fin A1, and the vertical fixing plate A7.4 together. One end of the lower fixing stud 11 is connected to the vertical fixing plate D8.5, and the other end of the vertical fixing plate D8.5 passes through the furnace wall water-cooled wall fin B4 and the vertical fixing plate B7.5 in sequence, and is threaded to the nut B12, connecting the vertical fixing plate D8.5, the furnace wall water-cooled wall fin B4, and the vertical fixing plate B7.5 together.

[0030] Each component can be processed and assembled individually. The through-type installation of the stud simplifies the assembly process, and the simple structure reduces complex processing requirements and lowers manufacturing costs.

[0031] Furthermore, referring to Figure 3 and Figure 4The reinforcing structure includes a first clamping plate 13 and a second clamping plate 14 arranged opposite to each other. The inner end face of the first clamping plate 13 is provided with a pipe groove A15, and the inner end face of the second clamping plate 14 is provided with a pipe groove B16. The corresponding pipe groove A15 and the matching pipe groove B16 form a clamping hole for clamping the first extension pipe 3 and the second extension pipe 6. One end of the column fixing stud 17 is welded to the vertical section B8.1, and the other end passes through the second clamping plate 14, the first clamping plate 13, and the vertical section A7.1 in sequence and is threaded to the nut C18. The first clamping plate 13 is engaged in the engagement area enclosed by the vertical section A7.1, the horizontal section A7.2, and the horizontal section B7.3, and the second clamping plate 14 is engaged in the engagement area enclosed by the vertical section B8.1, the horizontal section C8.2, and the horizontal section D8.3.

[0032] Furthermore, at the corresponding locations where the clamping hole is welded to the first extension tube 3 and the second extension tube 6, there is a clearance hole, the inner diameter of which is larger than the inner diameter of the clamping hole.

[0033] Furthermore, the front connector 7 and the rear connector 8 are formed by bending metal plates, the first clamping plate 13 and the second clamping plate 14 are made of refractory bricks, and the pipe grooves A15 and B16 are evenly distributed along the length directions of the first clamping plate 13 and the second clamping plate 14, respectively. The materials are simple and readily available, reducing manufacturing costs.

[0034] The modular power plant boiler water-cooled wall of this utility model, after the first extension tube and the second extension tube are welded, can effectively reinforce the connection through the reinforcement structure. The reinforcement structure is fixed by the front and rear connecting parts. Through the synergistic effect of the above components, the upper and lower water-cooled wall units are fixed and limited, which improves the stability of the modular power plant boiler water-cooled wall after assembly, avoids loosening, and is conducive to long-term use.

[0035] The modular power plant boiler water-cooled wall of this utility model includes upper fixed studs and lower fixed studs. Each component can be processed and assembled separately. The through-type installation of the studs simplifies the assembly process, and the simple structure reduces complex processing requirements and lowers manufacturing costs.

[0036] The modular power plant boiler water-cooled wall described in this utility model has a simple principle. The reinforcement structure can significantly strengthen and improve the strength of the boiler water-cooled wall connection without changing the existing boiler water-cooled wall, ensuring the normal use function of the boiler water-cooled wall product and improving product quality.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0038] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A modular water-cooled wall for a power plant boiler, comprising an upper water-cooled wall unit and a lower water-cooled wall unit, characterized in that: The upper water-cooled wall unit includes multiple sets of adjacent upper furnace wall water-cooled wall tubes, with furnace wall water-cooled wall fins A arranged between adjacent upper furnace wall water-cooled wall tubes. A first extension tube is integrally provided at the bottom end of each upper furnace wall water-cooled wall tube. The lower water-cooled wall unit includes multiple sets of adjacent lower furnace wall water-cooled wall tubes, with furnace wall water-cooled wall fins B arranged between adjacent lower furnace wall water-cooled wall tubes. A second extension tube is integrally provided at the bottom end of each lower furnace wall water-cooled wall tube. The upper end of the second extension tube is welded to the bottom end of the first extension tube. The outer sides of the first and second extension tubes are covered with a reinforcing structure. A front connector and a rear connector are respectively fixed at both ends of the reinforcing structure.

2. The modular power plant boiler water-cooled wall according to claim 1, characterized in that, The furnace wall water-cooled wall fin A is welded to the upper furnace wall water-cooled wall tube, and the furnace wall water-cooled wall fin B is welded to the lower furnace wall water-cooled wall tube.

3. The modular power plant boiler water-cooled wall according to claim 1 or 2, characterized in that, The upper and lower ends of the front connector are fixedly connected to the furnace wall water-cooled wall fin A and the furnace wall water-cooled wall fin B, respectively, and the upper and lower ends of the rear connector are fixedly connected to the furnace wall water-cooled wall fin A and the furnace wall water-cooled wall fin B, respectively.

4. The modular power plant boiler water-cooled wall according to claim 3, characterized in that, The front connector includes a vertical section A, the upper and lower ends of which are bent to form a horizontal section A and a horizontal section B, respectively. The top end of the horizontal section A is bent to form a vertical fixing plate A, and the bottom end of the horizontal section B is bent to form a vertical fixing plate B. The rear connector includes a vertical section B, the upper and lower ends of which are bent to form a horizontal section C and a horizontal section D, respectively. The top end of the horizontal section C is bent to form a vertical fixing plate C, and the bottom end of the horizontal section D is bent to form a vertical fixing plate D.

5. The modular power plant boiler water-cooled wall according to claim 4, characterized in that, It also includes an upper fixing stud and a lower fixing stud. One end of the upper fixing stud is welded to the vertical fixing plate C, and the other end passes through the furnace wall water-cooled wall fin A and the vertical fixing plate A in sequence and is threaded to the nut A, connecting the vertical fixing plate C, the furnace wall water-cooled wall fin A, and the vertical fixing plate A together. One end of the lower fixing stud is connected to the vertical fixing plate D, and the other end of the vertical fixing plate D passes through the furnace wall water-cooled wall fin B and the vertical fixing plate B in sequence and is threaded to the nut B, connecting the vertical fixing plate D, the furnace wall water-cooled wall fin B, and the vertical fixing plate B together.

6. The modular power plant boiler water-cooled wall according to claim 5, characterized in that, The reinforcing structure includes a first clamping plate and a second clamping plate arranged opposite to each other. A pipe groove A is formed on the inner end face of the first clamping plate, and a pipe groove B is formed on the inner end face of the second clamping plate. Corresponding pipe grooves A and matching pipe grooves B form a clamping hole for clamping the first extension pipe and the second extension pipe. One end of the column fixing stud is welded to the vertical section B, and the other end passes through the second clamping plate, the first clamping plate, and the vertical section A in sequence and is threaded to the nut C. The first clamping plate is clamped in the clamping area enclosed by the vertical section A, the horizontal section A, and the horizontal section B, and the second clamping plate is clamped in the clamping area enclosed by the vertical section B, the horizontal section C, and the horizontal section D.

7. The modular power plant boiler water-cooled wall according to claim 6, characterized in that, The front and rear connectors are made of bent metal plates.

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