Scaly overlap wear plate

Abstract

The present invention relates to the field of anti-wear equipment of scaly overlapping wear plates, and in particular to a scaly overlapping wear plate. The invention aims to solve the problem that the fish scale overlapping of scaly overlapping wear plates in the prior art is not stable enough and has a low matching life. The ends of the wear plates in the scaly overlapping wear plates of the present invention are provided with overlapping areas with high and low fluctuations, and the overlapping areas between the two wear plates are engaged with each other to achieve stable overlapping, and at the same time, they are installed in an oblique upward position to form an air mass area to facilitate the smooth advancement of subsequent airflow. The advantages are: the scaly overlapping wear plates achieve stable overlapping without affecting the freedom of thermal expansion of the wear plates, while extending the matching life, reducing the difficulty of maintenance, and the welding point design of the wear plates is more reasonable.

Description

Technical Field

[0001] The invention relates to the field of scale-like overlapping anti-wear plates, in particular to a scale-like overlapping anti-wear plate. Background Art

[0002] Circulating fluidized bed combustion technology is a clean coal combustion technology highly recognized by the market. It has been widely used and developed at home and abroad for its high efficiency, low pollution, strong adaptability to coal types, and good load controllability. How to prevent the circulating fluidized bed boiler furnace water-cooled wall from wear and bursting is the key to its long-term safe and stable operation. At present, the membrane water-cooled wall is a sealed combined heating surface that welds many rolled water-cooled wall fin tubes together by spot welding. It can not only improve the air tightness of the furnace and reduce air leakage, but also better protect the furnace wall, reduce the weight of the furnace wall, and simplify the structure. These measures have played a good effect in solving the problem of wear of the circulating fluidized bed boiler water-cooled wall.

[0003] The anti-wear plate technology is to set low-carbon high-chromium high-nickel alloy plates horizontally and vertically to prevent wear, destroy the flow rate and flow direction of the particles adhering to the wall, and thus play a good anti-wear role. In the existing technology, the design of the anti-wear plate mostly promotes the guidance of materials in the circulating fluidized bed and prolongs the service life of the pipe wall.

[0004] At the current stage of technology, the improvement of wear plates mainly lies in the following points: 1. Present a smooth installation effect as much as possible to avoid the occurrence of eddy currents or turbulence; 2. Reduce the surface area of ​​the wear plates; 3. Increase the cost of raw materials, thereby improving the mechanical properties of parts. In the long-term front-line work, the applicant has proposed a variety of improvements to the wear plates in combination with actual working conditions. For example, a set of wear plates and matching processing equipment was invented, including at least two unit wear plates that are assembled together. The unit wear plates are wavy in the side view direction, the middle part is at the crest of the wave shape, and the end is at the lowest point of the trough of the wave shape. The unit wear plates are curved strips in the top view direction, and their inner side edges are consistent with the installation shape and size of the fins installed on them. The advantages are: better flow guidance effect on the fluid, and at the same time, the reasonable design of the casting processing equipment ensures its own high impact resistance and long service life.

[0005] For example, a fish-scale overlap method has been invented, in which one plate is overlapped with another, with one end lower than the other. This connection method avoids the problem of poor mechanical properties of welds between plates. However, this design still has certain defects. Specifically, under this modified overlap method, the later the plates are installed, the greater the stress they are subjected to, and the interception net formed by the entire wear-resistant plate itself has the problem of uneven stress levels. Summary of the invention

[0006] The purpose of the present invention is to solve the problem in the prior art that the scale-like overlap wear-resistant plate has insufficient fish-scale overlap stability and a short matching life.

[0007] The specific scheme of the present invention is:

[0008] A scale-like overlapping wear plate is designed, wherein the ends of the wear plates are provided with overlapping areas with undulating shapes, the overlapping areas between the two wear plates are engaged with each other to achieve stable overlapping, the overlapping areas include a high portion and a low portion, the high portion and the low portion (5) are centrally symmetrical relative to the center point of the side surface of the wear plate, a welding groove is provided in the middle of the wear plate, a through hole matching with equipment is provided on the wear plate, and the size of the through hole is proportional to more than 1.05 times the size of the matching equipment, and an inclined surface is provided on the inner side surface of the wear plate to achieve an upwardly inclined installation position relative to the installation surface, and the inclination angle α is less than 40 degrees.

[0009] In a specific implementation, the high portion and the low portion are quadrangular prisms of the same shape and size, or the high portion and the low portion are prisms of the same shape and size with rounded edges. A retention block is installed above the wear plate, and the width of the retention block accounts for 1 / 3 to 3 / 4 of the width of the wear plate.

[0010] In a specific implementation, the width of the quadrangular prism is equal to half of the width of the side surface of the anti-wear plate, and the height of the quadrangular prism is equal to half of the height of the side surface of the anti-wear plate.

[0011] In a specific implementation, the high portion may be replaced with a raised arc-shaped bump, and the corresponding low portion may be replaced with a sunken groove.

[0012] In a specific implementation, a semicircular groove is provided at the bottom of the anti-wear plate, and a triangular support is provided below the semicircular groove.

[0013] In a specific implementation, a guide plate is provided on the outer edge of the anti-wear plate, and the end of the guide plate is adjacent to the outer end of the triangular support.

[0014] In a specific implementation, two adjacent transition blocks are welded in the overlap region, each of which is welded to the anti-wear plates on both sides, and the gap between the transition blocks is smaller than the installation gap between the anti-wear plates.

[0015] In a specific implementation, the outer edge of the anti-wear plate is a bevel with an inclination angle of α. The acute angle at the bottom of the right triangle formed between the anti-wear plate and the mounting surface is β. α and β are complementary to each other. A hanging groove is provided on the edge of the anti-wear plate to hang a detection plate. A columnar lamp is installed on the top of the detection plate.

[0016] The invention also relates to a method for overlapping wear plates, using the above-mentioned scale-shaped overlapping wear plates, comprising the following steps:

[0017] (1) Horizontal positioning: At the location to be installed, manually or using the principle of parallel light, mark a horizontal line with a height between 1.2m and 2.5m, and use a marking pen to position it;

[0018] (2) Install the wear plates one by one until they are assembled into a belt-shaped wear strip: in the horizontal installation state, the high and low parts of each wear plate are staggered, and an expansion gap of 1 / 10 of the length of the wear plate is reserved. Welding is performed at the designed welding points at 1 / 3 to 1 / 4 on the left and right sides of the inner side of the wear plate; in the longitudinal installation state, the high and low parts of each wear plate are staggered, and an expansion gap of 1 / 10 of the length of the wear plate is reserved. Welding is performed at the designed welding points on both sides at 1 / 3 to 1 / 4 on the left and right sides of the inner side of the wear plate;

[0019] (3) Overlap guide plate: For horizontal installation, install the guide plate at an angle of 45 to 60 degrees downward on the outer side of the wear plate, and install a diagonal support rod between the guide plate and the installation position. In step (1), design a light column that is inclined downward and parallel to the bottom edge of the installation surface to form the horizontal line.

[0020] The beneficial effects of the present invention are:

[0021] The scale-shaped overlap wear plate realizes stable overlap without affecting the freedom of thermal expansion of the wear plate, while extending the matching life and reducing the difficulty of maintenance. The weld point design of the wear plate is more reasonable.

[0022] Various implementation methods to adapt to various working conditions;

[0023] The overlapping guide plates form a counterflow, which is equivalent to achieving reverse support to a certain extent; the transition block has low stress and early warning; the design of the detection plate uses reasonable angle design and the optical principle of parallel light of the column lamp to further ensure the horizontal installation of the anti-wear plate;

[0024] The inclined installation can form an air mass, which is convenient for the smooth advancement of the subsequent airflow, and reduces the stress on the anti-wear plate on the side. At the same time, multiple partitions are used to facilitate the stability of the overall force-bearing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a stereogram of the structure of the present invention;

[0026] Figure 2 yes Figure 1 a perspective view of the assembled wear plate in the illustrated configuration;

[0027] Figure 3 yes Figure 1 A front view of the assembled wear plate in the illustrated configuration;

[0028] Figure 4 yes Figure 1 A top view of the assembled wear plate in the illustrated configuration;

[0029] Figure 5 is a perspective view of another embodiment;

[0030] Figure 6 yes Figure 5 A three-dimensional view of the structure from another angle;

[0031] Figure 7 is a three-dimensional diagram of another embodiment of the present invention;

[0032] Figure 8 is a structural schematic diagram of yet another embodiment of the present invention;

[0033] Fig. 9 is a three-dimensional diagram of the structure of yet another embodiment of the present invention;

[0034] Fig.10 yes Fig. 9 A lateral schematic view of the structure shown;

[0035] The names of the components in the figure are: 1. Mounting surface; 2. Anti-wear plate; 3. Welding point; 4. High part 5. Low part; 6. Guide plate; 7. Support; 8. Transition block. DETAILED DESCRIPTION

[0036] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0037] Example 1

[0038] A scale-like overlapping wear plate, see Figures 1 to 10 In the design, the end of the wear plate 2 is provided with an undulating overlap area, and the overlap areas between the two wear plates 2 are engaged to achieve stable overlap. The overlap area includes a high part 4 and a low part 5, and the high part 4 and the low part 5 are centrally symmetrical with respect to the center point of the side of the wear plate 2. A welding groove is provided in the middle of the wear plate 2. The wear plate 2 is provided with a through hole that matches the equipment, and the through hole size is proportional to more than 1.05 times the size of the matching equipment. The inner side surface of the wear plate 2 is provided with an inclined surface to achieve an upward installation position relative to the installation surface 1, and the inclination angle α is less than 40 degrees. In this embodiment, the inclined installation forms a vortex, which guides the subsequent airflow and forms a smoother falling transition arc.

[0039] The high part 4 and the low part 5 are quadrangular prisms of the same shape and size, or the high part 4 and the low part 5 are prisms of the same shape and size with rounded edges. A retaining block is installed above the wear plate 2, and the width of the retaining block accounts for 1 / 3 to 3 / 4 of the width of the wear plate 2. The function of the retaining block is to form partitions on the wear plate 2. When the hot air flows through, it is guided to flow to different partitions, which is conducive to making the installed plate group bear force evenly.

[0040] The width of the quadrangular prism is equal to half of the width of the side surface of the wear-resistant plate 2 , and the height of the quadrangular prism is equal to half of the height of the side surface of the wear-resistant plate 2 .

[0041] Two adjacent transition blocks 8 are welded in the overlap area, each of which is welded to the wear plates 2 on both sides, and the gap between the transition blocks 8 is smaller than the installation gap between the wear plates 2. The function of the transition block 8 is to utilize the low mechanical property of its design. When the distance between the two plates is too close, the transition block 8 will first come into contact, and then interference will occur. For workers, when they find that there is a fallen transition block 8 on the ground, they can determine that the distance between the relevant wear plates 2 is too close, which will affect the degree of freedom.

[0042] The outer edge of the wear plate 2 is a bevel with an inclination angle of α. The acute angle of the bottom of the right triangle formed by the wear plate 2 and the mounting surface 1 is β, and α and β are complementary. A hanging groove is provided on the edge of the wear plate 2 to hang the detection plate, and a columnar lamp is installed on the top of the detection plate. The columnar lamp can use the principle of parallel light to detect whether the installation position is accurate in real time.

[0043] In the present invention, the assembled anti-wear plate 2 has both freedom and stable fixation. The freedom ensures that thermal expansion and contraction are not affected in a high temperature environment, and does not affect the mechanical properties of the product's working state. The stable fixation ensures the product's service life and working strength. As far as the applicant knows, this is the first technology to introduce appropriate freedom into the installation of the anti-wear plate 2. Further, a transition block 8 is designed to achieve early warning, that is, when there is a risk of interference between the anti-wear blocks, the transition block 8 is damaged first, which serves as a reminder.

[0044] The overlapping method of the wear plate 2 of this embodiment, using the above-mentioned scale-shaped overlapping wear plate, includes the following steps:

[0045] (1) Horizontal positioning: At the location to be installed, manually or using the principle of parallel light, mark a horizontal line with a height between 1.2m and 2.5m, and use a marking pen to position it;

[0046] (2) Install the wear plates 2 one by one until they are assembled into a belt-shaped wear strip: in the horizontal installation state, the high part 4 and the low part 5 between each wear plate 2 are staggered, and an expansion gap of 1 / 10 of the length of the wear plate 2 is reserved, and welding is performed at 1 / 3 to 1 / 4 of the inner side of the wear plate 2; in the longitudinal installation state, the high part (4 and the low part 5 between each wear plate 2 are staggered, and an expansion gap of 1 / 10 of the length of the wear plate 2 is reserved, and welding is performed at 1 / 3 to 1 / 4 of the inner side of the wear plate 2 on both sides;

[0047] (3) Overlapping guide plate 6: For lateral installation, the guide plate 6 is installed on the outer side of the wear plate 2 at an angle of 45 to 60 degrees downward, and at the same time, a diagonal support 7 is installed between the guide plate 6 and the installation position.

[0048] In this embodiment, in step (1), a light column is designed to be inclined downward and parallel to the bottom edge of the installation surface 1 to form a horizontal line. During the installation process, the staff can determine whether the installation position is deviated according to the light conditions.

[0049] Example 2

[0050] The principle of this embodiment is the same as that of the embodiment 1, except that, in the specific implementation, the high part 4 may be replaced with a raised arc-shaped bump, and the corresponding low part 5 may be provided with a concave groove. The arc surface transition is used to realize the channel for thermal expansion and deformation.

[0051] Example 3

[0052] The principle of this embodiment is the same as that of Embodiment 1, with the specific difference being that, in this embodiment, a semicircular groove is provided at the bottom of the anti-wear plate 2, and a triangular support 7 is provided below the semicircular groove.

[0053] A guide plate 6 is provided on the outer edge of the wear plate 2 , and the end of the guide plate 6 is adjacent to the outer end of the triangular support 7 .

[0054] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A scaly overlapped wear plate, characterized in that: The ends of the wear-resistant plates (2) are provided with overlapping areas with high and low undulations, and the overlapping areas between the two wear-resistant plates (2) are engaged with each other to achieve stable overlapping, and the overlapping areas include a high portion (4) and a low portion (5), and the high portion (4) and the low portion (5) are centrally symmetrical with respect to the center point of the side surface of the wear-resistant plates (2). A welding groove is provided in the middle of the wear-resistant plates (2), and a through hole matching with the equipment is provided on the wear-resistant plates (2), and the size ratio of the through hole is more than 1.05 times the size of the matching equipment. The inner side surface of the wear-resistant plates (2) is an inclined surface to achieve an upwardly inclined installation position relative to the installation surface (1) to form a vortex air mass, and the inclination angle α is less than 40 degrees. The high portion (4) and the low portion (5) are quadrangular prisms of the same shape and size. A retaining block is installed above the wear-resistant plate (2). The retaining block forms partitions on the wear-resistant plate 2. When hot air flows through, it is guided to flow to different partitions. The width of the retaining block accounts for 1 / 3 to 3 / 4 of the width of the wear-resistant plate (2). Two adjacent transition blocks (8) are welded in the overlap area, each of which is welded to the wear-resistant plate (2) on both sides. The gap between the transition blocks (8) is smaller than the installation gap between the wear-resistant plates (2). The width of the quadrangular prism is equal to half the width of the side of the wear-resistant plate (2), and the height of the quadrangular prism is equal to half the height of the side of the wear-resistant plate (2).

Images