Wear-resistant pipeline for coal pulverizing system of power plant

Abstract

The utility model discloses a wear-resistant pipeline for a power plant coal pulverizing system, and relates to the technical field of pipe fittings. The pipeline comprises a pipeline body, a silk screen arranged on the inner wall of the pipeline body, a fixing device used for fixing the silk screen on the inner wall of the pipeline body, and a wear-resistant coating laid on the silk screen. The fixing device is a fixing rod, the middle of the fixing rod is inserted into the silk screen in a penetrating mode, and the two ends of the fixing rod are fixedly connected with the pipeline body. By the adoption of the technical scheme, the anti-abrasion coating has the advantages of being good in anti-abrasion effect, firm in coating, not prone to falling off and simple in structure. And the method can also be applied to other scenes requiring wear resistance in the pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe fittings, in particular to a wear-resistant pipeline used in a powder making system of a power plant. Background Art

[0002] Since the coal ash content in power plant boilers is high, and the pulverizing system is high in fineness due to the high temperature and high velocity air scouring, it is a common phenomenon that the pulverizing system pipeline wears out. After a long period of wear, the pulverizing pipeline will wear out and leak. Once the pulverizing system pipeline breaks, it will affect the operation of the pulverizing system and the safe and reliable operation of the unit.

[0003] In the prior art, the process technology for laying anti-wear coating on the pipeline of the pulverizing system is mainly to lay the anti-wear coating directly after cleaning the inner wall of the pipeline. Laying the anti-wear coating can effectively reduce the scouring of the pipeline by coal powder and extend the service life of the pipeline. However, the coating is not firmly bonded to the pipeline and is easy to fall off, affecting the anti-wear effect. Moreover, this process is only applicable to the horizontal section of the pipeline. The coating solidifies for a long time, and the anti-wear coating is difficult to combine with the pipeline, resulting in the anti-wear coating being easily peeled off under the scouring of coal powder during operation. Utility Model Content

[0004] The utility model aims to provide a wear-resistant pipeline for a power plant pulverizing system in view of the defects and shortcomings of the prior art, which has the advantages of good anti-wear effect, firm coating and simple structure.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a wear-resistant pipeline for a powder making system of a power plant, comprising:

[0006] A pipeline body, a wire mesh arranged on the inner wall of the pipeline body, a fixing device for fixing the wire mesh on the inner wall of the pipeline body, and a wear-resistant coating laid on the wire mesh.

[0007] The utility model is further arranged that the fixing device is a fixing rod, the middle portion of the fixing rod is inserted into the wire mesh, and the two ends of the fixing rod are fixedly connected to the pipeline body.

[0008] The utility model is further arranged that two ends of the fixing rod are welded and fixed on the inner wall of the pipe body.

[0009] The utility model is further provided that a fixing tie is provided between the fixing rod and the wire mesh.

[0010] The utility model is further arranged that the fixing rod is arranged as a round steel with a diameter of 4-8 cm.

[0011] The utility model is further configured that the wire mesh is a common metal wire mesh or a stainless steel metal wire mesh.

[0012] The utility model is further arranged that the grids on the silk screen are square grids or oblique grids.

[0013] The utility model is further arranged that the grids on the silk screen are squares, and the side length of the squares is 0.3cm-0.6cm.

[0014] After adopting the above technical solution, the beneficial effects of the utility model are:

[0015] 1. In the utility model, the wear-resistant pipeline used in the pulverizing system of a power plant includes: a pipeline body, a wire mesh, a fixing device and a wear-resistant coating. The wire mesh is arranged on the inner wall of the pipeline body and fixed by the fixing device, so that the wire mesh can be stably and well fixed on the inner wall of the pipeline body, and the wear-resistant coating is applied on the surface of the wire mesh to achieve a good anti-wear effect on the inner wall of the pipeline, reduce the direct scouring of the inner wall of the pipeline by coal powder, and extend the service life of the pipeline.

[0016] 2. In the present invention, the setting of the wire mesh enhances the bonding between the wear-resistant coating and the inner wall of the pipe, so that the wear-resistant coating can be firmly laid on the inner wall of the pipe, and the wear-resistant coating is prevented from accidentally falling off during laying and working, thereby failing to achieve the anti-wear effect. Moreover, when applied to a pipe arranged in a vertical direction, due to the good bonding between the wear-resistant coating and the inner wall of the pipe, the wear-resistant coating is not easily fallen off due to the effect of gravity during the laying process of the wear-resistant coating, which affects the manufacturing difficulty and manufacturing cost of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the utility model from another viewing angle.

[0020] Explanation of the reference numerals: 1. Pipe body; 2. Wire mesh; 3. Fixing rod; 4. Wear-resistant coating. DETAILED DESCRIPTION

[0021] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0023] This embodiment relates to a wear-resistant pipe for a power plant pulverizing system, such as Figure 1-2 As shown, it includes: a pipe body 1, a wire mesh 2, a fixing device and a wear-resistant coating 4.

[0024] Among them, the wire mesh 2 is arranged on the inner wall of the pipe body 1 and is fixed by a fixing device, so that the wire mesh 2 can be stably and well fixed on the inner wall of the pipe body 1, and the wear-resistant coating 4 is applied on the surface of the wire mesh 2 to achieve a good anti-wear effect on the inner wall of the pipe, reduce the direct erosion of the coal powder on the inner wall of the pipe, and extend the service life of the pipe.

[0025] Due to the setting of the wire mesh 2, the bonding between the wear-resistant coating 4 and the inner wall of the pipeline is enhanced, so that the wear-resistant coating 4 can be firmly laid on the inner wall of the pipeline, and the wear-resistant coating 4 is prevented from accidentally falling off during the laying and working process and failing to play the anti-wear effect. Moreover, when applied to a pipeline arranged in a vertical direction, due to the good bonding between the wear-resistant coating 4 and the inner wall of the pipeline, the wear-resistant coating 4 is not easily fallen off due to the effect of gravity during the laying process of the wear-resistant coating 4, which affects the manufacturing difficulty and manufacturing cost of the pipeline.

[0026] In this embodiment, the fixing device is set as a fixing rod 3, the middle part of the fixing rod 3 is inserted on the wire mesh 2 to achieve connection with the wire mesh 2, and the two ends of the fixing rod 3 are fixedly connected to the pipeline body 1 to fix the wire mesh 2 on the inner wall of the pipeline body 1, so that the wire mesh 2 can be well fitted to the inner wall of the pipeline body 1, so as to facilitate the laying of the wear-resistant coating 4 and achieve a good combination of the wear-resistant coating 4 and the pipeline body 1. The fixing rod 3 can be provided with multiple groups as needed, distributed in multiple areas on the wire mesh 2, so that each part of the wire mesh 2 can be well fixed on the inner wall of the pipeline body 1. As a preferred solution, the fixing rod 3 is a round steel with a diameter of 6 cm, the middle part of the round steel passes through the square of the inserted wire mesh 2, and the two ends are welded on the inner wall of the pipeline body 1 to achieve a good fixation of the wire mesh 2. The pipeline will have a certain vibration during operation, and the fixing rod 3 is relatively stable, with a low risk of failure, which can avoid the situation where the wire mesh 2 loosens due to pipeline vibration and causes the wear-resistant coating 4 to fall off. Of course, in other embodiments, fixing rods 3 of other materials or sizes may be selected according to actual needs, and other fixing devices may be used to fix the wire mesh 2, such as mounting buckles.

[0027] In this embodiment, a fixing tie is further provided between the fixing rod 3 and the wire mesh 2, which can simply and quickly fix the fixing rod 3 and the wire mesh 2, further improving the fixing effect of the wire mesh 2, so that the wire mesh 2 can better fit the inner wall of the pipe body 1, thereby improving the bonding between the wear-resistant coating 4 and the pipe body 1 and ensuring the wear-resistant effect.

[0028] As a preferred solution, the wire mesh 2 is set to be a common metal wire mesh 2 or a stainless steel metal wire mesh 2. The size of the wire mesh 2 can be freely selected according to actual needs.

[0029] In this embodiment, the mesh on the screen 2 is a square grid with a side length of 0.4 cm to achieve a good fixing effect on the wear-resistant coating 4. Of course, in other embodiments, screens 2 with other grid shapes, such as oblique grids, etc., can also be selected, and screens 2 with appropriate grid sizes can be selected according to actual needs.

[0030] The above is only used to illustrate the technical solution of the utility model rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the utility model by ordinary technicians in this field should be included in the scope of the claims of the utility model as long as they do not depart from the spirit and scope of the technical solution of the utility model.

Claims

1. A wear-resistant pipe for a power plant pulverizing system, characterized in that: include: A pipe body (1), a wire mesh (2) arranged on the inner wall of the pipe body (1), a fixing device for fixing the wire mesh (2) on the inner wall of the pipe body (1), and a wear-resistant coating (4) applied on the wire mesh (2).

2. The wear-resistant pipeline for a power plant powder making system according to claim 1 is characterized in that: The fixing device is a fixing rod (3), the middle part of the fixing rod (3) is inserted into the wire mesh (2), and the two ends are fixedly connected to the pipeline body (1).

3. The wear-resistant pipeline for a power plant powder making system according to claim 2 is characterized in that: Both ends of the fixing rod (3) are welded and fixed on the inner wall of the pipe body (1).

4. The wear-resistant pipeline for a power plant powder making system according to claim 2 is characterized in that: A fixing tie is also provided between the fixing rod (3) and the wire mesh (2).

5. The wear-resistant pipeline for a power plant powder making system according to claim 2 is characterized in that: The fixing rod (3) is configured as a round steel bar with a diameter of 4-8 cm.

6. The wear-resistant pipeline for a power plant pulverizing system according to claim 1, characterized in that: The wire mesh (2) is a common metal wire mesh (2) or a stainless steel metal wire mesh (2).

7. The wear-resistant pipeline for a power plant pulverizing system according to claim 1 is characterized in that: The grids on the silk screen (2) are square grids or oblique grids.

8. The wear-resistant pipeline for a power plant pulverizing system according to claim 7, characterized in that: The grids on the silk screen (2) are squares, and the side length of the squares is 0.3 cm-0.6 cm.

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