Anti-abrasion backpack type slag cooler slag inlet pipe

Abstract

The utility model relates to the technical field of slag coolers, in particular to an anti-abrasion backpack type slag inlet pipe of a slag cooler, which comprises a pipe body with a corner for changing the flowing direction of ash and slag. The shell is located on the outer side of the pipe body, welded to the corner bottom of the pipe body, matched with the corner bottom in shape and internally provided with a filling space distributed in the axis direction of the pipe body; and the filling space is filled with the wear-resistant and fire-resistant pouring material. The bottom of the corner of the pipe body is thickened through the shell and the wear-resistant refractory castable, so that the service life of the slag inlet pipe is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of cold slag machine technology, and in particular to a wear-resistant backpack-type cold slag machine inlet pipe. Background Technology

[0002] As a boiler auxiliary machine, the function of the ash cooler is to cool the ash and slag produced after combustion in the boiler. The ash and slag exchange heat with cooling water through the ash cooler, and the circulating cooling water carries away most of the heat from the ash and slag, thus achieving cooling.

[0003] The section of pipe from the inlet of the slag cooler to the inside of the cylinder is called the "slag inlet pipe." Because the bends in the slag inlet pipe are constantly subjected to the scouring of hot slag, the wear rate is relatively fast. Once the slag inlet pipe is worn through, hot slag will overflow into the slag inlet box, causing the equipment to catch fire and emit ash. In severe cases, this can seriously affect the safe and stable operation of the equipment and increase maintenance costs. Utility Model Content

[0004] In view of the shortcomings of the related technologies, this utility model provides a wear-resistant backpack-type slag inlet pipe for a cold slag machine. The bottom of the pipe corner is thickened by the shell and wear-resistant refractory castable to extend the service life of the slag inlet pipe.

[0005] This utility model provides a wear-resistant backpack-style slag inlet pipe for a cold slag machine, comprising:

[0006] The pipe body has corners that change the direction of ash and slag flow.

[0007] The shell, located on the outside of the tube, is welded to the bottom of the corner of the tube and matches the shape of the bottom of the corner. It has filling spaces distributed along the axis of the tube.

[0008] Wear-resistant and refractory castable, filling the space completely.

[0009] In some embodiments, the housing includes side plates and two end plates. The two end plates are located at both ends of the side plates, and the side plates and the two end plates form a space for accommodating abrasion-resistant refractory castable, with the corner portions of the pipe body located within this space and in direct contact with the abrasion-resistant refractory castable. The side plates and the two end plates are integrally formed or welded.

[0010] In some embodiments, the slag inlet pipe further includes: gripping nails, multiple of which are welded to the inside of the side plate.

[0011] In some embodiments, the catches are welded to the inside of the side plate in groups, with multiple catches in each group. The ends of all catches in the same group that are closest to the side plate are grouped together, while the ends of all catches in the same group that are furthest from the side plate are spread out in any of the following shapes: V-shape, fan shape, or umbrella shape.

[0012] In some embodiments, the pins are arranged in a matrix on the side plate in groups.

[0013] In some embodiments, the ends of all the clamps in the same group that are away from the side plate spread out in a V-shape. The plane containing all the clamps in the same group is perpendicular to the tube axis. The ends of all the clamps that are away from the side plate are bent upwards.

[0014] In some embodiments, the catch pin is U-shaped, and the weld between the catch pin and the side plate is linear.

[0015] In some embodiments, the side plate has an arc-shaped cross-section.

[0016] In some embodiments, the wear-resistant and refractory castable is corundum castable.

[0017] In some embodiments, the housing is a 310S stainless steel housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. The shell and wear-resistant refractory castable can be thickened at the bottom of the pipe corners to extend the service life of the slag inlet pipe.

[0020] 2. The clamping nails can help improve the connection strength between the side plate and the wear-resistant refractory castable, further extending the service life of the slag inlet pipe. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the slag inlet pipe of this utility model;

[0023] Figure 2 for Figure 1 A schematic diagram of the cross-section at point A.

[0024] In the diagram: 1. Pipe body; 21. Side plate; 22. End plate; 3. Wear-resistant and refractory castable; 4. Cling nail. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figure 1-2 As shown, in an embodiment of the wear-resistant backpack-type slag cooler inlet pipe of this utility model, the wear-resistant backpack-type slag cooler inlet pipe includes at least:

[0030] Pipe body 1 has a corner that changes the direction of ash and slag flow.

[0031] The shell is located on the outside of the tube 1 and is welded to the bottom of the corner of the tube 1. It matches the shape of the bottom of the corner and has filling spaces distributed along the axis of the tube 1 inside.

[0032] Wear-resistant and refractory castable 3, filling the space completely.

[0033] Wear-resistant and refractory castable 3 includes, but is not limited to, corundum castable, mullite castable, high alumina castable and silicon carbide castable.

[0034] The shell and wear-resistant refractory castable 3 are used to thicken the wall thickness at the bottom of the corner of the pipe body 1. After the high-temperature ash slag enters the pipe body 1, it impacts the pipe wall at the corner. After the pipe wall is worn through by the ash slag, the wear-resistant refractory castable 3 and the shell will replace the original pipe wall to extend the service life of the slag inlet pipe.

[0035] In some embodiments, the housing includes a side plate 21 and two end plates 22. The two end plates 22 are located at both ends of the side plate 21, and the side plate 21 and the two end plates 22 form a space for accommodating the wear-resistant refractory castable 3. The corner portion of the pipe body 1 is located in this space and is in direct contact with the wear-resistant refractory castable 3. The side plate 21 and the two end plates 22 are integrally formed or welded.

[0036] Furthermore, the cross-sectional shape of the side plate 21 includes, but is not limited to, concave, arc, and V-shaped.

[0037] Furthermore, the side plate 21 has an arc or V-shaped cross-section, and the thickest part of the filling space is where the impact of ash and slag on the slag inlet pipe is strongest.

[0038] In some embodiments, the side plate 21 has an arc-shaped cross-section to improve stress uniformity at various points on the side plate 21 and increase the lifespan of the side plate 21.

[0039] In some embodiments, the slag inlet pipe further includes: grab studs 4, multiple of which are welded to the inner side of the side plate 21. The grab studs 4 are used to help improve the connection strength between the side plate 21 and the wear-resistant refractory castable 3, reduce the tendency of the wear-resistant refractory castable 3 to deposit downwards and detach from the shell, and further extend the service life of the slag inlet pipe.

[0040] In some embodiments, the catch studs 4 are welded to the inner side of the side plate 21 in groups, with multiple catch studs 4 in each group. The ends of all catch studs 4 in the same group that are close to the side plate 21 are grouped together, while the ends of all catch studs 4 in the same group that are away from the side plate 21 are spread out in any of the following forms: V-shape, fan shape, or umbrella shape, so as to reinforce and fix more wear-resistant and refractory castable 3 to the side plate 21 within a limited filling space.

[0041] In some embodiments, the pins 4 are distributed in a matrix on the side plate 21 in groups, for example, multiple rows of pins 4 are distributed along the length of the filling space, with multiple groups of pins 4 in each row.

[0042] In some embodiments, the ends of all the catch studs 4 in the same group that are away from the side plate 21 are spread out in a V-shape. The plane containing all the catch studs 4 in the same group is perpendicular to the axis of the pipe body 1. The ends of all the catch studs 4 that are away from the side plate 21 are bent upward to further improve the connection strength between the wear-resistant refractory castable 3 and the side plate 21.

[0043] In some embodiments, the grab pin 4 is U-shaped, and the weld between the grab pin 4 and the side plate 21 is linear, so as to extend the weld length between the grab pin 4 and the side plate 21 and strengthen the connection strength between the grab pin 4 and the side plate 21.

[0044] In some embodiments, the wear-resistant and refractory castable 3 is corundum castable.

[0045] In some embodiments, the housing is a 310S stainless steel housing.

[0046] Through the description of several embodiments of the wear-resistant backpack-type slag inlet pipe of the present invention, it can be seen that the embodiments of the wear-resistant backpack-type slag inlet pipe of the present invention have at least one or more of the following advantages:

[0047] 1. The shell and wear-resistant refractory castable 3 can thicken the bottom of the corner of the pipe body 1 to extend the service life of the slag inlet pipe.

[0048] 2. The catch nail 4 can help improve the connection strength between the side plate 21 and the wear-resistant refractory castable 3, and further extend the service life of the slag inlet pipe.

[0049] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A wear-resistant backpack-type slag inlet pipe for a cold slag machine, characterized in that, include: The pipe body has corners that change the direction of ash and slag flow; The shell, located on the outside of the tube body, is welded to the bottom of the corner of the tube body and matches the shape of the bottom of the corner. It has filling spaces distributed along the axis of the tube body inside. Wear-resistant and refractory castable, filling the space completely.

2. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 1, characterized in that, The shell includes a side plate and two end plates; the two end plates are located at both ends of the side plate, and the side plate and the two end plates form a space for accommodating wear-resistant refractory castable. The corner part of the pipe is located in this space and is in direct contact with the wear-resistant refractory castable; the side plate and the two end plates are integrally formed or welded.

3. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 2, characterized in that, Also includes: Multiple nails are welded to the inside of the side plate.

4. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 3, characterized in that, The catch pins are welded to the inside of the side plate in groups, with multiple catch pins in each group; the ends of all catch pins in the same group that are closest to the side plate are concentrated together, and the ends of all catch pins in the same group that are furthest from the side plate are spread out in any one of the following forms: V-shape, fan shape, or umbrella shape.

5. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 4, characterized in that, The pins are arranged in a matrix on the side plate in groups.

6. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 4, characterized in that, All the clamps in the same group have their ends away from the side plate spread out in a V-shape; the plane on which all the clamps in the same group are located is perpendicular to the axis of the tube; and the ends of all the clamps away from the side plate are bent upwards.

7. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 6, characterized in that, The catch pins are U-shaped, and the weld between the catch pins and the side plates is linear.

8. The wear-resistant backpack-type slag inlet pipe for a cold slag machine according to claim 2, characterized in that, The side plate has an arc-shaped cross-section.

9. A wear-resistant backpack-type slag inlet pipe for a cold slag machine according to any one of claims 1-8, characterized in that, The wear-resistant and refractory castable is made of corundum.

10. A wear-resistant backpack-type slag inlet pipe for a cold slag machine according to any one of claims 1-8, characterized in that, The casing is made of 310S stainless steel.

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