Abrasion-impact-resistant boiler heating surface protection device

Abstract

The utility model discloses a boiler heating surface protection device resistant to abrasion impact, which comprises a protection assembly, and the protection assembly comprises an abrasion-proof tile arranged on a boiler heating surface, and a connecting steel plate a and a connecting steel plate b which are arranged on two sides of the abrasion-proof tile; bearing side plates are assembled on the two side walls of the anti-abrasion tile, and inserting grooves are formed in the side walls of the bearing side plates; inserting plates are mounted at the lower end parts of the connecting steel plate a and the connecting steel plate b, and are inserted into the inserting grooves; a splicing steel plate a is installed at the upper end of the connecting steel plate a, a splicing steel plate b is installed at the upper end of the connecting steel plate b, and the splicing steel plate a and the splicing steel plate b are arranged in an attached mode. The boiler heating surface protection device resistant to abrasion impact is reasonable in arrangement and structural design, the two sets of protection steel plates can be rapidly installed on the anti-abrasion tile, one or more sets of pipelines are protected according to site requirements, only the blowing damage condition of the anti-abrasion protection cover steel plates needs to be checked in the overhaul process, and anti-abrasion and anti-explosion inspection is greatly facilitated.

Description

Technical Field

[0001] This utility model relates to the field of boiler protection technology, specifically to a boiler heating surface protection device that is resistant to wear and impact. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy.

[0003] Currently, the heating surfaces in the sootblower area of ​​the boiler's high-temperature reheater are protected with wear-resistant tiles. However, these tiles are easily deformed and detached due to the blowing steam in the sootblower area, failing to achieve satisfactory wear and explosion-proof effects. Furthermore, the detachment of these tiles leaves exposed pipe sections, which are subject to accelerated localized wear and thinning under the action of the sootblower, affecting the normal operation of the equipment. Therefore, it is necessary to design a wear-resistant protective cover for the heating surfaces of thermal power plant boilers. Utility Model Content

[0004] The purpose of this utility model is to provide a protective device for boiler heating surfaces that resists wear and impact, in order to solve the problem mentioned in the background art that the heating surfaces of the sootblower area of ​​the high-temperature reheater of the boiler are currently protected by wear-resistant tiles. However, these tiles are easily deformed and fall off when blown by sootblowing steam in the sootblower area, thus failing to achieve satisfactory wear and explosion prevention effects. Furthermore, after the wear-resistant tiles fall off, there will be blank exposed pipe sections, which will be accelerated by the action of the sootblower to reduce local wear and thinning, affecting the normal use of the equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a boiler heating surface protection device resistant to wear and impact, comprising a protection component, wherein the protection component comprises a wear-resistant tile disposed on the boiler heating surface and a connecting steel plate a and a connecting steel plate b disposed on both sides of the wear-resistant tile;

[0006] Both sides of the wear-resistant tile are fitted with bearing side plates, and the side walls of the bearing side plates are provided with slots.

[0007] Both the lower ends of the connecting steel plate a and the connecting steel plate b are equipped with insert plates, which are inserted into slots.

[0008] The upper end of the connecting steel plate a is equipped with a splicing steel plate a, and the upper end of the connecting steel plate b is equipped with a splicing steel plate b. The splicing steel plate a and the splicing steel plate b are fitted together.

[0009] The side walls of the splicing steel plate a and splicing steel plate b are provided with three fastening holes, and fasteners are installed inside the fastening holes;

[0010] The fastener includes a fastening screw and an anti-loosening screw, and a fastening nut is screwed onto the outside of the fastening screw;

[0011] The bottom end of the fastening screw is provided with an anti-loosening groove, and the anti-loosening screw is screwed into the anti-loosening groove;

[0012] An anti-detachment sleeve is fitted onto the outside of the anti-detachment screw, and three limiting posts are installed on the outer wall of the anti-detachment sleeve, the three limiting posts being distributed in a triangle.

[0013] Each of the limiting posts has a spiral groove on its inner wall that mates with the fastening screw.

[0014] As a preferred embodiment of the wear-resistant and impact-resistant boiler heating surface protection device of this utility model, the inner wall of the anti-detachment cylinder is provided with a reverse internal thread, and the outer part of the anti-detachment screw that fits with the anti-detachment cylinder is provided with a reverse external thread, and the reverse internal thread and the reverse external thread cooperate with each other.

[0015] As a preferred embodiment of the wear-resistant and impact-resistant boiler heating surface protection device of this utility model, the outer wall of the fastening nut is provided with an annular groove, and the end of the limiting post is disposed in the annular groove.

[0016] As a preferred embodiment of the wear-resistant and impact-resistant boiler heating surface protection device of this utility model, a fixing ring is fixedly installed on the upper outer end of the fastening screw, and an annular pressure plate, a spring and an annular rubber sheet are fitted on the circumferential surface of the fastening screw.

[0017] In a preferred embodiment of this utility model, a boiler heating surface protection device for resisting wear and impact, the annular pressure plate is located on the upper side of the fixed ring, the spring is located on the upper side of the annular pressure plate, the annular rubber sheet is located on the lower side of the fixed ring, and a compression block is fixedly installed at the lower edge of the annular pressure plate.

[0018] As a preferred embodiment of the wear-resistant and impact-resistant boiler heating surface protection device of this utility model, the outer walls of both the connecting steel plate a and the connecting steel plate b are coated with a wear-resistant coating.

[0019] As a preferred embodiment of the wear-resistant and impact-resistant boiler heating surface protection device of this utility model, the insert plate and the slot are interference fit.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the design of this wear-resistant and impact-resistant boiler heating surface protection device is reasonable;

[0021] Two sets of protective steel plates can be quickly installed on the wear-resistant tiles to protect one or more sets of pipes as needed on site. During maintenance, only the wear-resistant steel plate needs to be checked for damage, which greatly facilitates wear-resistant and explosion-proof inspection. Attached Figure Description

[0022] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of part A of the present utility model;

[0024] Figure 3 This is a schematic diagram of the fastener of this utility model;

[0025] Figure 4 This is a schematic diagram of the anti-detachment cylinder of this utility model.

[0026] In the diagram: 1. Anti-wear tile; 2. Connecting steel plate a; 3. Connecting steel plate b; 4. Fastener; 5. Fastening hole; 6. Fastening screw; 7. Fastening nut; 8. Anti-loosening groove; 9. Anti-loosening cylinder; 10. Anti-loosening screw; 11. Annular groove; 12. Fixing ring; 13. Extrusion block; 14. Annular pressure plate; 15. Annular rubber sheet; 16. Spring; 17. Limiting post; 18. Spiral groove; 19. Splicing steel plate a; 20. Splicing steel plate b; 21. Insert plate; 22. Bearing side plate; 23. Slot. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-4 This utility model provides a technical solution:

[0029] In this technical solution, a boiler heating surface protection device resistant to wear and impact includes a protective component. The protective component includes an anti-wear tile 1 disposed on the boiler heating surface and connecting steel plates a2 and b3 disposed on both sides of the anti-wear tile 1. Each side wall of the anti-wear tile 1 is fitted with a bearing edge plate 22, and the side wall of the bearing edge plate 22 has a slot 23. The lower ends of both connecting steel plates a2 and b3 are fitted with insert plates 21, which are inserted into the slots 23. The upper end of connecting steel plate a2 is fitted with a splicing steel plate a19, and the upper end of connecting steel plate b3 is fitted with a splicing steel plate b20. The splicing steel plates a19 and b20... The splicing steel plate b20 is fitted together; the side walls of the splicing steel plate a19 and the splicing steel plate b20 are provided with three fastening holes 5, and fasteners 4 are installed inside the fastening holes 5; the fasteners 4 include fastening screws 6 and anti-detachment screws 10, and fastening nuts 7 are screwed to the outside of the fastening screws 6; the bottom end of the fastening screws 6 is provided with an anti-detachment groove 8, and the anti-detachment screws 10 are screwed into the anti-detachment groove 8; an anti-detachment sleeve 9 is sleeved on the outside of the anti-detachment screws 10, and three limiting posts 17 are installed on the outer wall of the anti-detachment sleeve 9, and the three limiting posts 17 are distributed in a triangle; the inner wall of each limiting post 17 is provided with a spiral groove 18 that cooperates with the fastening screws 6.

[0030] In this technical solution, connecting steel plates a2 and b3 are provided on the left side of the wear-resistant tile 1. The cross-sections of connecting steel plates a2 and b3 are triangular. The upper ends of connecting steel plates a2 and b3 are fitted together, and steel insert plates 21 are welded to their lower ends. These insert plates can be inserted into the slots 23 on both sides of the wear-resistant tile 1, thereby installing the connecting steel plates a2 and b3 onto the wear-resistant tile 1. After the splicing steel plates a19 and b20 are fitted together, they are tightened. When component 4 is installed, the fastening screw 6 and the fastening nut 7 cooperate to realize the bolt in the prior art. An anti-loosening groove 8 is provided at the bottom end of the fastening screw 6. The anti-loosening screw 10 is screwed in. Three limiting posts 17 installed on the anti-loosening cylinder 9 outside the anti-loosening screw 10 hold the fastening nut 7 in place, thereby limiting the fastening nut 7 in a circumferential manner. The spiral groove 18 on the limiting post 17 engages with the fastening screw 6, thereby limiting the anti-loosening cylinder 9 and the anti-loosening screw 10.

[0031] In some technical solutions, the inner wall of the anti-detachment cylinder 9 is provided with a reverse internal thread, and the outer part of the anti-detachment screw 10 that fits with the anti-detachment cylinder 9 is provided with a reverse external thread, and the reverse internal thread and the reverse external thread are matched.

[0032] In this technical solution, the external thread of the anti-detachment screw 10 is divided into two parts. The front part mates with the internal thread of the anti-detachment screw groove 8, and the rear part mates with the reverse internal thread of the anti-detachment cylinder 9, thereby installing the anti-detachment cylinder 9 on the outside of the anti-detachment screw 10.

[0033] In some technical solutions, the outer wall of the fastening nut 7 is provided with an annular groove 11, and the end of the limiting post 17 is set in the annular groove 11.

[0034] In this technical solution, when the anti-loosening screw 10 is screwed into the anti-loosening screw groove 8, the anti-loosening cylinder 9 will rotate accordingly. When the limiting post 17 contacts the fastening nut 7, it can rotate in the annular rotating groove 11 until it contacts the inner wall of the annular rotating groove 11, thereby holding the fastening nut 7 in place and performing axial limiting.

[0035] In some technical solutions, a retaining ring 12 is fixedly installed on the upper outer end of the fastening screw 6, and an annular pressure plate 14, a spring 16 and an annular rubber sheet 15 are fitted on the circumferential surface of the fastening screw 6.

[0036] In this technical solution, when the fastening screw 6 is rotated, the annular rubber sheet 15 slides upward due to the action of the screw hole. With further tightening, the annular rubber sheet 15 contacts the fixing ring 12. The annular rubber sheet 15 deforms due to the action of the fixing ring 12, sealing the screw hole. The spring 16 is located on the upper side of the annular pressure plate 14, causing the annular pressure plate 14 to be pressed downward due to the action of the spring 16. The compression block 13 is pressed downward due to the action of the annular pressure plate 14, causing the compression block 13 to further compress the edge of the annular rubber sheet 15, thereby improving the sealing effect. The annular pressure plate 14 is located on the upper side of the fixing ring 12, the spring 16 is located on the upper side of the annular pressure plate 14, and the annular rubber sheet 15 is located on the lower side of the fixing ring 12. The compression block 13 is fixedly installed at the lower edge of the annular pressure plate 14.

[0037] In some technical solutions, the outer walls of both connecting steel plate a2 and connecting steel plate b3 are coated with a wear-resistant coating.

[0038] In this technical solution, the wear-resistant coating is a silicon carbide coating, which has high hardness, high wear resistance and good high temperature resistance. It can effectively resist the erosion and wear of particles in the high temperature flue gas in the boiler, and can significantly improve the service life of boiler heating surfaces and other components. All components in the fasteners are coated with an alumina coating, which has the characteristics of high hardness, high temperature resistance and good chemical stability. It can form a dense protective film in the high temperature environment of the boiler, effectively resisting the erosion and scouring of high temperature flue gas. It can be used on boiler heating surfaces, furnace walls and other parts.

[0039] In some technical solutions, the insertion plate 21 and the slot 23 are interference fit.

[0040] In this technical solution, the lower ends of connecting steel plate a2 and connecting steel plate b3 are connected to the bearing side plates 22 on both sides of the wear-resistant tile 1.

[0041] Working principle: When using the anti-wear tile 1, the lower ends of the connecting steel plate a2 and the connecting steel plate b3 are connected to the bearing side plate 22, and the two splicing steel plates at the top of the connecting steel plate a2 and the connecting steel plate b3 are attached together and fixed by fasteners 4.

[0042] 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.

[0043] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A protective device for boiler heating surfaces resistant to wear and impact, comprising protective components, characterized in that, The protective assembly includes a wear-resistant tile (1) disposed on the boiler heating surface and connecting steel plates a (2) and b (3) disposed on both sides of the wear-resistant tile (1); The wear-resistant tile (1) is equipped with a bearing side plate (22) on both sides, and the bearing side plate (22) has a slot (23) on its side wall; The lower ends of the connecting steel plate a (2) and the connecting steel plate b (3) are each equipped with a plug plate (21), which is inserted into the slot (23); The upper end of the connecting steel plate a (2) is equipped with a splicing steel plate a (19), and the upper end of the connecting steel plate b (3) is equipped with a splicing steel plate b (20). The splicing steel plate a (19) and the splicing steel plate b (20) are fitted together. The side walls of the splicing steel plate a (19) and splicing steel plate b (20) are provided with three fastening holes (5), and fasteners (4) are installed inside the fastening holes (5); The fastener (4) includes a fastening screw (6) and an anti-loosening screw (10), and a fastening nut (7) is screwed onto the outside of the fastening screw (6); The bottom end of the fastening screw (6) is provided with an anti-loosening screw groove (8), and the anti-loosening screw (10) is screwed into the anti-loosening screw groove (8); The anti-detachment screw (10) is sleeved with an anti-detachment cylinder (9), and the outer wall of the anti-detachment cylinder (9) is equipped with three limiting posts (17), which are arranged in a triangular pattern. Each of the limiting posts (17) has a spiral groove (18) on its inner wall that cooperates with the fastening screw (6).

2. The wear-resistant and impact-resistant boiler heating surface protection device according to claim 1, characterized in that, The inner wall of the anti-detachment cylinder (9) is provided with a reverse internal thread, and the outer part of the anti-detachment screw (10) that fits with the anti-detachment cylinder (9) is provided with a reverse external thread, and the reverse internal thread and the reverse external thread are matched.

3. The wear-resistant and impact-resistant boiler heating surface protection device according to claim 1, characterized in that, The outer wall of the fastening nut (7) is provided with an annular groove (11), and the end of the limiting post (17) is located in the annular groove (11).

4. The wear-resistant and impact-resistant boiler heating surface protection device according to claim 1, characterized in that, A retaining ring (12) is fixedly installed on the upper outer end of the fastening screw (6), and an annular pressure plate (14), a spring (16) and an annular rubber sheet (15) are fitted on the circumferential surface of the fastening screw (6).

5. The wear- and impact-resistant boiler heating surface protection device according to claim 4, characterized in that, The annular pressure plate (14) is located on the upper side of the fixed ring (12), the spring (16) is located on the upper side of the annular pressure plate (14), the annular rubber sheet (15) is located on the lower side of the fixed ring (12), and a compression block (13) is fixedly installed at the lower edge of the annular pressure plate (14).

6. The wear-resistant and impact-resistant boiler heating surface protection device according to claim 1, characterized in that, The outer walls of both the connecting steel plate a(2) and the connecting steel plate b(3) are coated with a wear-resistant coating.

7. The wear-resistant and impact-resistant boiler heating surface protection device according to claim 1, characterized in that, The insert plate (21) and the slot (23) are interference fit.

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