CN214038396U - U-shaped edge-covering wear-resistant ceramic for guide vane - Google Patents

Abstract

The utility model belongs to the technical field of wear-resistant ceramics, and aims to provide a U-shaped edge-wrapped wear-resistant ceramic for guide vanes, which comprises a ceramic body, wherein the ceramic body is in a U-shaped structure and is internally provided with a U-shaped groove hole; the bottom of the ceramic body is provided with a conical structure, and the bottom surface of the conical structure is provided with an arc chamfer; the conical structure is connected with a side arc surface, and the side arc surface is connected with an inclined surface; the inclined plane is connected with the end surface of the opening. The utility model has the characteristics of be difficult for droing after inlaying, the wearability is good, long service life etc, but wide application in fine coal dense and thin separator's guide vane inside lining.

Description

U-shaped edge-covering wear-resistant ceramic for guide vane

Technical Field

The utility model belongs to the technical field of wear-resisting pottery, specifically speaking is a wear-resisting pottery of borduring of U type for guide vane.

Background

The pulverized coal separator is an important device of a power station boiler, and has the function of separating the air and powder mixture into different concentrations and feeding the mixture into a chamber for combustion, and the inner wall of the pulverized coal separator is easily worn under the working conditions of high-speed scouring and abrasion for a long time.

At present, the inner wall of the existing pulverized coal shade separator adopts a wear-resistant ceramic lining, so that the service life of the existing pulverized coal shade separator can be effectively prolonged. However, at the parts with complex structures, such as guide vanes, air door adjusting plates, side surfaces of gate plates and the like, after the wear-resistant ceramic lining with the conventional structure is attached, the problems of easy falling, unsatisfactory scouring resistance effect and the like occur, and the service life of the whole pulverized coal dense-dilute separator is seriously influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome not enough among the prior art, provide a wear-resisting pottery of borduring of U type for guide vane, have after inlaying difficult drop, characteristics such as the wearability is good, long service life, but wide application in the guide vane inside lining of fine coal dense-dilute separator, improve guide vane's life.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a U-shaped edge-wrapped wear-resistant ceramic for guide vanes comprises a ceramic body, wherein the ceramic body is of a U-shaped structure, and a U-shaped groove hole is formed in the ceramic body; the bottom of the ceramic body is provided with a conical structure, and the bottom surface of the conical structure is provided with an arc chamfer; the conical structure is connected with a side arc surface, and the side arc surface is connected with an inclined surface; the inclined plane is connected with the end surface of the opening.

As an improvement, the ceramic body is of a non-uniform thickness structure, the thickness of the ceramic body is gradually increased from the opening to the bottom surface, and the minimum thickness is 2 mm.

As an improvement, an inner arc chamfer is arranged at the top end of the inner part of the U-shaped groove hole, and the inner arc chamfer is R1.0-R2.5mm.

As an improvement, the arc chamfer is R2.0-R4.5mm.

As an improvement, the opening end surface is in an L-shaped structure and is symmetrically distributed.

As an improvement, the included angle of the inclined plane is 3-10 degrees.

As an improvement, the ceramic body is one of 95 alumina ceramics, ZTA ceramics or silicon carbide ceramics.

As an improvement, the ceramic body is formed by hot-pressing injection molding and firing at a high temperature of more than 1600 ℃.

The utility model has the advantages that: a U-shaped edge-covering wear-resistant ceramic for guide vanes has the characteristics of difficult shedding after being embedded, good wear resistance, long service life and the like, improves the airflow scouring resistance by adopting a U-shaped edge-covering structure, avoids the problem of easy shedding caused by scouring, and simultaneously has a U-shaped slotted hole in the interior, so that the embedding is firmer, and the bonding strength of a wear-resistant ceramic lining and the guide vanes is further improved; in addition, the U-shaped edge-wrapped wear-resistant ceramic adopts one of 95 alumina ceramic, ZTA ceramic or silicon carbide ceramic, a hot-pressing injection molding process is adopted, the uniform size and the smooth surface of the product are ensured, and the prepared ceramic has high density and good wear resistance after being fired at a high temperature of more than 1600 ℃.

Drawings

Fig. 1 is a schematic structural view of the U-shaped edge-wrapping wear-resistant ceramic for guide vanes of the present invention.

In the figure: 1. a ceramic body; 2. a U-shaped slot; 3. a tapered structure; 4. chamfering with an arc; 5. a side circular arc surface; 6. a bevel; 7. an open end face; 8. and chamfering the inner arc.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and embodiments: as shown in fig. 1, the U-shaped edge-wrapped wear-resistant ceramic for guide vanes of the present invention comprises a ceramic body 1, wherein the ceramic body 1 is in a U-shaped structure, and a U-shaped groove hole 2 is arranged inside the ceramic body 1; the bottom of the ceramic body 1 is provided with a conical structure 3, the bottom surface of the conical structure 3 is provided with an arc chamfer 4, and the arc chamfer 4 is R2.0-R4.5mm, preferably R2.5mm; the conical structure 3 is connected with a side arc surface 5, the side arc surface 5 is connected with an inclined surface 6, and the inclined surface 6 is connected with an opening end surface 7.

Further, ceramic body 1 is the structure of not uniform thickness, and thickness from the opening part to the bottom surface crescent, and the minimum department of thickness is 2mm to guarantee that ceramic body has higher intensity.

Further, an inner arc chamfer 8 is arranged at the top end inside the U-shaped slot hole 2, and the inner arc chamfer 8 is R1.0-R2.5mm, preferably R1.5mm.

Furthermore, the opening end face 7 is in an L-shaped structure and is symmetrically distributed, so that the bonding strength with the guide vane is improved.

Further, the included angle of the inclined plane 6 is 3-10 degrees, and preferably 3-5 degrees.

Furthermore, the ceramic body is made of one of 95 alumina ceramics, ZTA ceramics or silicon carbide ceramics, and the wear resistance of the ceramic body is better than that of the traditional ceramics; meanwhile, a hot-pressing injection molding process is adopted, the cost is lower, the product appearance is more uniform and smooth, and finally the U-shaped edge-wrapped wear-resistant ceramic is formed by firing at a high temperature of more than 1600 ℃, so that the U-shaped edge-wrapped wear-resistant ceramic has good compactness, high strength, excellent wear resistance and corrosion resistance, and is suitable for high-wear and high-temperature use environments similar to guide vanes.

Finally, it should be noted that the above-mentioned embodiments illustrate only specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the invention should be considered as within the scope of the invention.

Claims (8)

1. A U-shaped edge-wrapped wear-resistant ceramic for guide vanes comprises a ceramic body (1), and is characterized in that the ceramic body (1) is of a U-shaped structure, and a U-shaped groove hole (2) is formed in the ceramic body; the bottom of the ceramic body (1) is provided with a conical structure (3), and the bottom surface of the conical structure (3) is provided with an arc chamfer (4); the conical structure (3) is connected with a side arc surface (5), and the side arc surface (5) is connected with an inclined surface (6); the inclined plane (6) is connected with the opening end surface (7).

2. The U-shaped wrapped wear-resistant ceramic for the guide vane according to claim 1, wherein the ceramic body (1) is of a non-uniform thickness structure, the thickness of the ceramic body gradually increases from the opening to the bottom surface, and the minimum thickness is 2 mm.

3. The U-shaped edge-wrapped wear-resistant ceramic for the guide vane according to claim 1, wherein the top end of the inside of the U-shaped slotted hole (2) is provided with an inner arc chamfer (8), and the inner arc chamfer (8) is R1.0-R2.5mm.

4. The U-shaped edge-wrapped wear-resistant ceramic for the guide vane according to claim 1, wherein the arc chamfer (4) is R2.0-R4.5mm.

5. The U-shaped edge-wrapped wear-resistant ceramic for guide vanes according to claim 1, wherein the opening end faces (7) are in an L-shaped structure and are symmetrically distributed.

6. The U-shaped edge-wrapped wear-resistant ceramic for guide vanes according to claim 1, wherein the included angle of the inclined surface (6) is 3-10 °.

7. The U-shaped tipping wear-resistant ceramic for guide vanes according to claim 1, characterized in that the ceramic body (1) is one of 95 alumina porcelain, ZTA ceramic or silicon carbide ceramic.

8. The U-shaped edge-wrapped wear-resistant ceramic for the guide vane according to claim 7, wherein the ceramic body (1) is formed by hot-press injection molding and high-temperature firing at a temperature of more than 1600 ℃.

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