Fin for water cooling wall of thermal power plant
By setting guide grooves and coloring components on the water-cooled wall fins of thermal power plants, the problem of difficult detection of cracks under thermal stress in the fins has been solved, achieving the effect of early detection of cracks and prevention of leakage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-04-07
AI Technical Summary
The fins used in the water-cooled walls of existing thermal power plants are prone to cracking under thermal stress, and these cracks are difficult to detect in time, leading to leakage incidents.
A guide groove is made on the fin body, and the extension direction of the guide groove is consistent with that of the water cooling pipe. A coloring component is provided to facilitate the detection of cracks. The location of the crack is identified by coloring the guide groove with a coloring head.
By combining the guide groove and the coloring component, the location of cracks can be detected in advance, preventing leakage incidents and improving detection efficiency and safety.
Smart Images
Figure CN224094510U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of thermal power generation technology, specifically to a fin for a water-cooled wall in a thermal power plant. Background Technology
[0002] During the operation of thermal power units, the fins of the water-cooled wall mainly serve as furnace seals. In addition to welding stress, the main source of stress on the fins is the thermal stress caused by the thermal expansion of the metal. When the fins are located in the water-cooled wall relief tube area such as the soot blower and burner, the cooling effect of the medium inside the water-cooled wall is poor due to the wider fin width. This results in the thermal stress of the fins in the relief tube area being significantly higher than in other locations. When the thermal stress and welding stress are superimposed on the heat-affected zone, cracks are easily formed and propagated, eventually leading to leakage.
[0003] Meanwhile, the wide fins of this type are usually located on the outside of the furnace where sealing boxes or other shielding components are installed. On the inside of the furnace, due to their deformation and bending structure, the weld seams are difficult to inspect. Therefore, when cracks appear, they cannot be effectively detected, leading to subsequent leakage incidents and causing unnecessary economic losses.
[0004] Therefore, a structure is urgently needed to solve at least one of the above problems. Utility Model Content
[0005] The purpose of this utility model embodiment is to provide a fin for water-cooled walls in thermal power plants, which solves the problem in the prior art that it is difficult to determine the location of cracks formed on the fins under the influence of thermal stress.
[0006] To achieve the above objectives, this utility model provides a fin for a water-cooled wall in a thermal power plant, used to connect two adjacent water-cooled pipes. The fin for the water-cooled wall in a thermal power plant includes:
[0007] Fin body;
[0008] A guide groove is formed on the fin body, and the extending direction of the guide groove is consistent with the extending direction of the water cooling pipe;
[0009] The coloring assembly includes a coloring head that adsorbs pigment; the coloring assembly is detachably mounted on the fin body, and the coloring head is movable on the fin body along the extension direction of the guide groove to color the guide groove.
[0010] Specifically, the guide groove is a U-shaped groove.
[0011] Specifically, the guide groove is located in the middle of the fin body.
[0012] Specifically, the coloring assembly further includes: a coloring seat and a connecting rod;
[0013] One end of the connecting rod is connected to the coloring base, and the other end is connected to the coloring head;
[0014] The coloring seat is detachably connected to the fin body by adsorption. The coloring seat can move on the fin body and drive the coloring head to move along the extension direction of the guide groove on the fin body.
[0015] Specifically, the coloring assembly further includes: a connecting seat, which is movably mounted on the connecting rod and can move along the extension direction of the connecting rod; the coloring head is connected to the connecting rod through the connecting seat.
[0016] Specifically, the connector has a slot, and the coloring head has a buckle that matches the slot. The buckle of the coloring head is connected to the slot of the connector by a snap-fit mechanism.
[0017] Specifically, the coloring component further includes a limiting rod disposed on the connecting seat to limit the position of the connecting seat on the connecting rod.
[0018] Specifically, the coloring base has a pigment receiving groove for storing pigment.
[0019] Specifically, a sealing cover is provided at the opening of the pigment receiving groove. The sealing cover can be opened and closed for adding fuel and sealing the pigment for storage.
[0020] The fins for water-cooled walls in thermal power plants provided by this utility model have guide grooves on the fin body. The extension direction of the guide grooves is consistent with the extension direction of the water-cooling pipes connected to the fin body. The guide grooves on the fin body make the location of the guide grooves the weakest point. When the fin body is affected by thermal stress, cracks will preferentially tear at the guide grooves. In this way, the location of cracks on the fin body can be controlled in advance through the guide grooves, making it convenient for staff to quickly detect cracks and avoid subsequent leakage incidents caused by cracks. In order to clearly determine the location of the guide grooves on the fin body, a coloring component is provided. The coloring head of the coloring component colors the guide grooves, making the guide grooves more clearly visible on the fin body. This solves the problem in the prior art that it is difficult to determine the location of cracks formed on the fins under thermal stress in water-cooled wall fins.
[0021] Other features and advantages of this utility model embodiment will be described in detail in the following detailed description section. Attached Figure Description
[0022] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:
[0023] Figure 1 This is a schematic diagram of the structure of the fins for water-cooled walls in thermal power plants provided in this embodiment of the utility model;
[0024] Figure 2 This is a top view of the fin body in the water-cooled wall fin of a thermal power plant provided in an embodiment of this utility model;
[0025] Figure 3 This is a schematic diagram showing the connection between the fin body and two adjacent water-cooling pipes in the fins used in the water-cooled wall of a thermal power plant, provided in an embodiment of this utility model.
[0026] Explanation of reference numerals in the attached figures
[0027] 1-Fin body; 2-Guide groove; 3-Coloring component; 4-Water cooling pipe; 31-Coloring head; 32-Coloring seat; 33-Connecting rod; 34-Connecting seat; 35-Limiting rod. Detailed Implementation
[0028] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.
[0029] Figure 1 This is a schematic diagram of the structure of fins used in water-cooled walls of thermal power plants; Figure 2 This is a top view of the fin body in the water-cooled wall fins of a thermal power plant; Figure 3 This is a schematic diagram showing the connection between the fin body and two adjacent water-cooling pipes in the finned walls of a thermal power plant. (Example:) Figures 1-3 As shown, this utility model provides fins for water-cooled walls in thermal power plants, used to connect two adjacent water-cooled pipes 4. The fins for water-cooled walls in thermal power plants include:
[0030] Fin body 1;
[0031] A guide groove 2 is formed on the fin body 1, and the extending direction of the guide groove 2 is consistent with the extending direction of the water cooling pipe 4.
[0032] The coloring component 3 includes a coloring head 31, which adsorbs pigment; the coloring component 3 is detachably mounted on the fin body 1, and the coloring head 31 can move along the extension direction of the guide groove 2 on the fin body 1 to color the guide groove 2.
[0033] The fins for water-cooled walls in thermal power plants provided by this utility model connect fin bodies 1 between two adjacent water-cooling pipes 4. The fin bodies 1 are prone to cracking due to thermal stress, and these cracks are usually small and difficult for workers to detect. To facilitate the detection of these cracks caused by thermal stress, guide grooves 2 are provided on the fin bodies 1. The extension direction of the guide grooves 2 is consistent with the extension direction of the water-cooling pipes 4. The weakest point on the fin body 1 is where the guide grooves 2 are located. Thus, cracks formed by thermal stress on the fin body 1 will preferentially tear through the guide grooves 2, causing the cracks to concentrate in the guide grooves 2. This allows staff to quickly identify cracks on the fin body 1. To facilitate clear observation of whether cracks have formed at the guide groove 2, a coloring component 3 is detachably installed on the fin body 1. The coloring head 31 of the coloring component 3 adsorbs pigment. When the coloring head 31 moves along the extension direction of the guide groove 2, it can color the guide groove 2, thereby facilitating accurate determination of the position of the guide groove 2 on the fin body 1. This makes it easier for staff to find cracks at the location of the guide groove 2. The fin for water-cooled walls of thermal power plants provided by this utility model solves the problem in the prior art that it is difficult to determine the location of cracks formed on the fin under the influence of thermal stress.
[0034] like Figure 2 As shown, the guide groove 2 is a U-shaped groove. The width of the guide groove 2 is a first width, and the depth of the guide groove 2 is a first depth. The guide groove 2 is a U-shaped groove. To avoid the guide groove 2 being too large and affecting the strength of the fin body 1, the width of the guide groove 2 is usually between 0.05mm and 0.3mm, and the depth of the guide groove 2 is between 0.05mm and 0.3mm. The guide groove 2 is located in the middle of the fin body 1.
[0035] To facilitate observation of cracks formed on the fin body 1 under thermal stress, the guide groove 2 is set in the middle of the fin body 1. In this way, the guide groove 2 is not blocked by the water cooling pipes 4 on both sides, making it convenient to observe the cracks formed at the guide groove 2.
[0036] In order to color the guide groove 2 through the coloring head 31, the coloring assembly 3 further includes: a coloring seat 32 and a connecting rod 33;
[0037] One end of the connecting rod 33 is connected to the coloring seat 32, and the other end is connected to the coloring head 31;
[0038] The coloring seat 32 is detachably connected to the fin body 1 by adsorption. The coloring seat 32 can move on the fin body 1 and drive the coloring head 31 to move on the fin body 1 along the extension direction of the guide groove 2.
[0039] The coloring component 3 further includes a connecting seat 34, which is movably mounted on the connecting rod 33 and can move along the extension direction of the connecting rod 33. The coloring head 31 is connected to the connecting rod 33 through the connecting seat 34.
[0040] The coloring component 3 further includes a limiting rod 35, which is disposed on the connecting seat 34 and is used to limit the position of the connecting seat 34 on the connecting rod 33.
[0041] The connecting seat 34 has a slot, and the coloring head 31 has a buckle that matches the slot. The buckle of the coloring head 31 and the slot of the connecting seat 34 are connected by a snap-fit.
[0042] To facilitate the detachable connection between the coloring component 3 and the fin body 1, the coloring seat 32 of the coloring component 3 is made of magnetic material. Under magnetic force, the coloring seat 32 can be attracted to the fin body 1, thus facilitating disassembly. One end of the connecting rod 33 is connected to the coloring seat 32, and the other end is movably connected to the connecting seat 34. The connecting seat 34 has a sliding hole, allowing it to slide on the connecting rod 33. Sliding the connecting seat 34 on the connecting rod 33 causes the coloring head 31 to move synchronously on the connecting rod 33. To facilitate the application of pigment by the coloring head 31 within the guide groove 2, a limiting rod 35 restricts the position of the connecting seat 34 on the connecting rod 33 during pigment application. Figure 1 As shown, a limiting hole is formed on the connecting seat 34 to fit the limiting rod 35. The limiting hole communicates with the sliding hole. The limiting end of the limiting rod 35 is movably disposed in the limiting hole and can move along the extension direction of the limiting hole. By moving the limiting end of the limiting rod 35 in the extension direction of the limiting hole, the limiting end of the limiting rod 35 can abut against or move away from the connecting rod 33. When the limiting end of the limiting rod 35 abuts against the connecting rod 33, it can restrict the movement of the connecting seat 34 on the connecting rod 33, thereby determining the position of the connecting seat 34 on the connecting rod 33. When the limiting end of the limiting rod 35 moves away from the connecting rod 33, the connecting seat 34 can move freely on the connecting rod 33. The rod 33 moves on the fin body 1. Specifically, the limiting hole is a threaded hole, and the limiting end of the limiting rod 35 is provided with an external thread that fits into the threaded hole. The limiting end of the limiting rod 35 is screwed into the limiting hole. The limiting end of the limiting rod 35 can rotate in the limiting hole and move along the extension direction of the limiting hole. The coloring head 31 and the connecting seat 34 are easily connected by a snap-fit structure. The connection between the coloring head 31 and the connecting seat 34 can be completed by inserting the snap-fit into the slot. When the coloring seat 32 moves on the fin body 1, it drives the connecting rod 33, the connecting seat 34 and the coloring head 31 to move synchronously on the fin body 1, which facilitates the coloring head 31 to color in the guide groove 2.
[0043] To facilitate the application of pigment by the coloring head 31, the coloring base 32 has a pigment-containing groove for storing pigment. A sealing cover is provided at the opening of the pigment-containing groove; the sealing cover can be opened and closed and can be used for adding pigment and sealing the pigment storage. Pigment is stored in the pigment-containing groove. When the coloring head 31 needs to be replenished, the sealing cover is opened to allow the coloring head 31 to apply pigment from the pigment-containing groove, and then the sealing cover is closed again to prevent pigment from spilling out.
[0044] The fins for water-cooled walls in thermal power plants provided by this utility model have guide grooves on the fin body. The extension direction of the guide grooves is consistent with the extension direction of the water-cooling pipes connected to the fin body. The guide grooves on the fin body make the location of the guide grooves the weakest point. When the fin body is affected by thermal stress, cracks will preferentially tear at the guide grooves. In this way, the location of cracks on the fin body can be controlled in advance through the guide grooves, making it convenient for staff to quickly detect cracks and avoid subsequent leakage incidents caused by cracks. In order to clearly determine the location of the guide grooves on the fin body, a coloring component is provided. The coloring head of the coloring component colors the guide grooves, making the guide grooves more clearly visible on the fin body. This solves the problem in the prior art that it is difficult to determine the location of cracks formed on the fins under thermal stress in water-cooled wall fins.
[0045] The optional embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present utility model, various simple modifications can be made to the technical solutions of the present utility model, and these simple modifications all fall within the protection scope of the present utility model.
[0046] It should also be noted that the various specific technical features described in the above embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the various possible combinations will not be described separately in this embodiment.
[0047] Furthermore, various different implementation methods of this utility model can be arbitrarily combined, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.
Claims
1. A fin for a water-cooled wall in a thermal power plant, used to connect two adjacent water-cooled pipes (4), characterized in that, The fins for water-cooled walls in thermal power plants include: Fin body (1); A guide groove (2) is formed on the fin body (1), and the extension direction of the guide groove (2) is consistent with the extension direction of the water cooling pipe (4); The coloring component (3) includes a coloring head (31) which adsorbs pigment; the coloring component (3) is detachably mounted on the fin body (1), and the coloring head (31) can move along the extension direction of the guide groove (2) on the fin body (1) to color the guide groove (2).
2. The fins for water-cooled walls in thermal power plants according to claim 1, characterized in that, The guide groove (2) is a U-shaped groove.
3. The fins for water-cooled walls in thermal power plants according to claim 1, characterized in that, The guide groove (2) is located in the middle of the fin body (1).
4. The fins for water-cooled walls in thermal power plants according to claim 1, characterized in that, The coloring component (3) further includes: a coloring seat (32) and a connecting rod (33); One end of the connecting rod (33) is connected to the coloring seat (32), and the other end is connected to the coloring head (31); The coloring seat (32) is detachably connected to the fin body (1) by adsorption. The coloring seat (32) can move on the fin body (1) and drive the coloring head (31) to move on the fin body (1) along the extension direction of the guide groove (2).
5. The fins for water-cooled walls in thermal power plants according to claim 4, characterized in that, The coloring component (3) further includes: a connecting seat (34), which is movably disposed on the connecting rod (33) and can move along the extension direction of the connecting rod (33), and the coloring head (31) is connected to the connecting rod (33) through the connecting seat (34).
6. The fins for water-cooled walls in thermal power plants according to claim 5, characterized in that, The coloring component (3) further includes a limiting rod (35), which is disposed on the connecting seat (34) and is used to limit the position of the connecting seat (34) on the connecting rod (33).
7. The fins for water-cooled walls in thermal power plants according to claim 5, characterized in that, The connecting seat (34) has a slot, and the coloring head (31) has a buckle that matches the slot. The buckle of the coloring head (31) and the slot of the connecting seat (34) are connected by a snap-fit method.
8. The fins for water-cooled walls in thermal power plants according to claim 4, characterized in that, The color base (32) is made of magnetic material.
9. The fins for water-cooled walls in thermal power plants according to claim 4, characterized in that, The coloring seat (32) has a pigment receiving groove for storing pigment.
10. The fins for water-cooled walls in thermal power plants according to claim 9, characterized in that, A sealing cover is provided at the opening of the pigment holding groove. The sealing cover can be opened and closed for adding pigment and for sealing and storing pigment.