Special-shaped anti-wear plate and supporting processing equipment

Abstract

The present invention relates to the field of anti-wear plate equipment inside boilers, in particular to a special-shaped anti-wear plate and a supporting processing equipment. It aims to provide an anti-wear plate with better flow guiding effect. The present invention includes at least two unit anti-wear plates that are joined together. Taking the fluid falling direction as the top view direction, the unit anti-wear plate is wavy in the front view direction, with the middle part at the peak of the wave shape and the end part at the lowest point of the wave valley of the wave shape. The unit anti-wear plate is a curved long strip in the top view direction, and the inner side thereof is consistent with the installation form and dimension of the fins installed thereon. The advantages are as follows: it has a better flow guiding effect on the fluid. At the same time, the reasonable design of the casting processing equipment ensures its high mechanical properties of anti-impact and long service life.

Description

Technical Field

[0001] The present invention relates to the field of anti-wear plate equipment inside boilers, in particular to a special-shaped anti-wear plate and a supporting processing equipment. Background Art

[0002] Circulating fluidized bed combustion technology is a clean coal combustion technology highly recognized by the market. With its advantages of high efficiency, low pollution, strong adaptability to coal types, and good controllability of load regulation, it has been widely applied and developed at home and abroad. And how to prevent the water-cooled wall of the circulating fluidized bed boiler from wearing and bursting pipes is the key to its long-term safe and stable operation. At present, the membrane water-cooled wall is to weld many rolled water-cooled wall fin tubes together by spot welding to form a sealed combined heating surface, which can not only improve the airtightness of the furnace, reduce air leakage, but also better protect the furnace wall, reduce the weight of the furnace wall and simplify the structure. These measures have achieved good results in solving the problem of water-cooled wall wear of circulating fluidized bed boilers.

[0003] The anti-wear technology of the anti-wear plate is to prevent wear by horizontally and vertically arranging low-carbon high-chromium high-nickel alloy plates, which destroys the flow velocity and flow direction of the particles near the wall, thus playing a good anti-wear role. In the prior art, the design of the anti-wear plate mostly promotes the guiding of materials in the circulating fluidized bed and prolongs the service life of the pipe wall.

[0004] In the current technology, the improvement of the anti-wear plate mainly lies in the following points: 1. Try to present a smooth installation effect to avoid the occurrence of eddy current or turbulent flow; 2. Reduce the surface area of the anti-wear plate; 3. Increase the cost of raw materials to improve the mechanical properties of parts.

[0005] However, in the prior art, there are still the following deficiencies. Specifically, the staff believes that: 1. It is difficult to handle the spacing between anti-wear plates, and turbulent flow or eddy current often occurs in the gaps, affecting the service life of the anti-wear plate and the overall efficiency; 2. During the installation process, the positioning is difficult, the requirements for the experience level of workers are high, and the labor cost is high; 3. Most are cast and processed, and the stress level at the edges of the processed products is low, and they are prone to damage. Summary of the Invention

[0006] The purpose of the present invention is to solve the problems of short product life, high labor cost, and poor mechanical properties of finished products existing in the prior art.

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

[0008] Design a special-shaped wear-resistant plate, which includes at least two unit wear-resistant plates that are joined together. Taking the fluid falling direction as the top view direction, the unit wear-resistant plate is wavy in the front view direction, with the middle part at the peak of the wave and the end part at the lowest point of the wave valley of the wave. The unit wear-resistant plate is in the shape of a curved long strip in the top view direction, and the inner side edge thereof is consistent with the installation form and dimension of the fins installed thereon. The two ends of the unit wear-resistant plate are provided with bevels for lapping, and the upper surface is coated with a wear-resistant coating greater than 2 mm.

[0009] In a specific implementation, the angle between the line connecting the peak and the valley of the wave in the installed state and the horizontal plane is α, and the value of α is consistent with the friction angle of the fluid.

[0010] In a specific implementation, the bevel angle of the bevel is 45 degrees.

[0011] In a specific implementation, the outer edge of the wear-resistant plate is replaced with a straight edge, and an extension plate is lapped on the outer edge.

[0012] In a specific implementation, a lapping buckle is provided between the extension plate and the wear-resistant plate, and the edge of the extension plate is horizontal or inclined downward.

[0013] In a specific implementation, the extension plate is wavy in the side view direction and matches the wear-resistant plate, and a plurality of diversion grooves are provided in the top view direction along the fluid falling direction.

[0014] In a specific implementation, a card hole for obliquely installing the bottom support rod for supporting the bottom of the wear-resistant plate is provided at the bottom of the wear-resistant plate.

[0015] In a specific implementation, the width of the long strip is between 3 and 6 cm.

[0016] Also involved is a wear-resistant plate processing device for processing the special-shaped wear-resistant plate as described above, which includes an upper template and a lower template. At least a pair of casting cavities arranged oppositely are formed between the upper template and the lower template. The shape of the casting cavity is consistent with the outer contour of the unit wear-resistant part. The pouring channel inlet is arranged above the peak, and at the same time, the casting cavity forms an inclination angle of 30-45 degrees with the horizontal direction.

[0017] In the paired casting cavities, each unilateral casting cavity is connected, and a branch pouring channel is provided at the top. The branch pouring channels are connected in parallel to the end of the main pouring channel.

[0018] The beneficial effects of the present invention are as follows:

[0019] The wavy design on the side realizes further diversion of the fluid. When the fluid passes through the wear-resistant plate, it is also guided in a wavy shape during the falling process, forming a fall along the wear-resistant plate and expanding the direction of fluid flow;

[0020] Meanwhile, the setting of the wave crest and wave trough positions ensures that in the direction of fluid fall, the first to be impacted is the wave crest, which is the place farthest from the gap between the wear-resistant plates. Therefore, this design plays a role in reducing the impact and protecting the stable force-bearing of the equipment;

[0021] The lap of the bevel further reduces the size of the gap between the two wear-resistant plates and further forms a relatively smooth transition.

[0022] On the one hand, the wear-resistant coating serves to improve the wear resistance of the main working surface. On the other hand, it can provide instructions to the construction workers, indicating which side is facing up and avoiding rework caused by reverse installation;

[0023] The design of the extension plate can, on the one hand, improve the bearing capacity of the plate itself, and on the other hand, promote the diversion of the fluid. Description of the Drawings

[0024] Figure 1 is the perspective view of the unit wear-resistant plate in the present invention;

[0025] Figure 2 is the perspective view of the assembled state of the unit wear-resistant plate in the present invention;

[0026] Figure 3 is Figure 2 the front view of the structure shown;

[0027] Figure 4 is Figure 2 the top view of the structure shown;

[0028] Figure 5 is Figure 2 the left view of the structure shown;

[0029] Figure 6 is Figure 2 the right view of the structure shown;

[0030] Figure 7 is the perspective view of the assembled structure of another embodiment;

[0031] Figure 8 is the perspective view of the lower die and the formed product in the processing equipment;

[0032] Figure 9 is Figure 8 the front view of the structure shown;

[0033] Figure 10 is Figure 8 the top view of the structure shown

[0034] Names of each component in the figure: 1. Unit wear-resistant plate; 2. Wave crest; 3. Wave trough; 4. Fin fitting hole; 5. Inclined plane; 6. Extension plate; 7. Flow guide groove; 8. Lower template; 9. Main runner; 10. Lapping buckle. Detailed implementation mode

[0035] The preferred embodiments of the present invention will be described below with reference to 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.

[0036] Embodiment 1

[0037] A special-shaped wear-resistant plate, see Figures 1 to 7 , the design includes at least two unit wear-resistant plates 1 that are joined together. Taking the fluid falling direction as the top view direction, the unit wear-resistant plate 1 is wavy in the front view direction, the middle part is at the wave crest 2 of the wave shape, and the end part is at the lowest point of the wave trough 3 of the wave shape. The unit wear-resistant plate 1 is a curved long strip in the front view direction, and the installation form and dimension of its inner side edge are consistent with those of the fins installed thereon. The two side ends of the unit wear-resistant plate 1 are provided with inclined planes 5 for lapping, and the upper surface is coated with a wear-resistant coating of more than 2 mm. During the assembly process, the positions of the wave troughs overlap each other. When the fluid flows through the wave crest and then moves towards the wave trough, the overall fluidity is improved. At the same time, when the fluid contacts the wear-resistant plate, it first contacts the wave crest position, where it arches and has high strength, which improves the stability of the equipment laterally. Through simple structural changes, this design realizes the deformation and beneficial improvement of the fluid flow channel in the art for the first time.

[0038] In this embodiment, the angle between the connection line between the wave crest 2 and the wave trough 3 in the installed state and the horizontal plane is α, and the value of α is consistent with the friction angle of the fluid. The purpose of this design is to promote the flow between the fluid and the wear-resistant plate and further prevent the accumulation of materials.

[0039] The inclined angle of the inclined plane 5 is 45 degrees. During the working process, seamless lapping can be achieved, further reducing the impact of the fluid on the wave trough.

[0040] Embodiment 2

[0041] The principle of this embodiment is the same as that of Embodiment 1. The specific difference is that the outer edge of the wear-resistant plate is replaced with a straight edge, and an extension plate 6 is lapped on the outer edge. The design of replacing the curved edge with a right-angle edge mainly aims to reduce the installation difficulty between the wear-resistant plate and the extension plate, facilitate installation, and at the same time, further achieve a smooth transition of the joint surface, prevent the fluid from depositing at the joint surface, and extend the service life of the equipment. The lapping form can be a mother-daughter buckle type lapping, or a matching convex platform and concave surface, as long as a similar Figure 7 smooth lapping effect can be obtained.

[0042] There is a lapping buckle 10 between the extension plate 6 and the wear-resistant plate, and the edge of the extension plate 6 is horizontal or inclined downward.

[0043] The extension plate 6 is wavy in the side view direction to match the wear-resistant plate, and there are a plurality of diversion grooves 7 along the fluid falling direction in the top view direction. The presence of the extension plate and the diversion grooves is beneficial to the flow of the fluid.

[0044] There are card holes at the bottom of the wear-resistant plate for obliquely installing the bottom support rods. This design is equivalent to installing a support at the bottom of the wear-resistant plate, further improving the stability of the support of the wear-resistant plate.

[0045] The strip shape has a width between 3 and 6 centimeters.

[0046] A wear-resistant plate processing device for processing the special-shaped wear-resistant plate as described above, see Figures 8 to 10 , including an upper template and a lower template 8. At least a pair of pouring cavities are formed between the upper template and the lower template 8. The shape of the pouring cavity is consistent with the outer contour of the unit wear-resistant plate 1. The inlet of the pouring channel 9 is arranged above the wave crest 2, and at the same time, the pouring cavity is inclined at an angle of 30-45 degrees with the horizontal direction.

[0047] In the paired pouring cavities, the pouring cavities on each single side are connected to each other, and a branch pouring channel is provided at the top. The branch pouring channels are connected in parallel to the end of the main pouring channel 9. The design of the processing device, on the one hand, realizes the forming pouring of the wear-resistant plate, and on the other hand, the design of the gate pouring channel is reasonable. From the wave crest to the wave trough, during the forming process, the mechanical properties of the wave crest are better, which is convenient for the force during use. The wave trough is below the forming cavity, which is convenient for the forming material to move towards it, improving the mechanical properties at the corners. At the same time, processing in pairs maintains the mechanical properties of the side maintenance mold stable.

[0048] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, 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 special-shaped anti-wear plate, characterized in that: It includes at least two unit anti-wear plates (1) that are joined together. Taking the fluid falling direction as the top view direction, the unit anti-wear plate (1) is wavy in the front view direction, with the middle part at the wave crest (2) of the wave shape, and the end part at the lowest point of the wave trough (3) of the wave shape. The unit anti-wear plate (1) is a curved long strip in the top view direction, and its inner side edge is consistent with the installation geometric dimensions of the fins installed on it. The two end parts of the unit anti-wear plate (1) are provided with overlapping inclined surfaces (5), and the upper surface is coated with a wear-resistant coating greater than 2 mm.

2. The special-shaped anti-wear plate according to claim 1, characterized in that: The angle between the connection line between the wave crest (2) and the wave trough (3) of the wave shape in the installed state and the horizontal plane is α, and the value of α is consistent with the friction angle of the fluid.

3. The special-shaped anti-wear plate according to claim 1, characterized in that: The inclined angle of the inclined surface (5) is 45 degrees.

4. The special-shaped anti-wear plate according to claim 1, characterized in that: The outer edge of the anti-wear plate is replaced with a straight edge, and an extension plate (6) is overlapped on the outer edge.

5. The special-shaped anti-wear plate according to claim 4, characterized in that: A overlapping buckle (10) is provided between the extension plate (6) and the anti-wear plate, and the edge of the extension plate (6) is horizontal or inclined downward.

6. The special-shaped anti-wear plate according to claim 5, characterized in that: The extension plate (6) is wavy in the side view direction to match the anti-wear plate, and a plurality of diversion grooves (7) are provided along the fluid falling direction in the top view direction.

7. The special-shaped anti-wear plate according to claim 1, characterized in that: A clamping hole for obliquely installing the bottom support rod is provided at the bottom of the anti-wear plate.

8. The special-shaped anti-wear plate according to claim 1, characterized in that: The width of the long strip is between 3 and 6 cm.

9. An anti-wear plate processing device for processing the special-shaped anti-wear plate according to claim 1, characterized in that: It includes an upper template and a lower template (8). At least a pair of pouring cavities are formed between the upper template and the lower template (8). The shape of the pouring cavity is consistent with the outer contour of the unit anti-wear plate (1). The inlet of the pouring channel (9) is arranged above the wave crest (2), and at the same time, the pouring cavity forms an inclination angle of 30 - 45 degrees with the horizontal direction.

10. The anti-wear plate processing device according to claim 9, characterized in that: In the paired pouring cavities, the pouring cavities on each single side are connected to each other, and a branch pouring channel is provided at the top. The branch pouring channels are connected in parallel to the end of the main pouring channel (9).

Images