Fly ash conveying pipeline

Abstract

The application discloses a fly ash conveying pipeline, which comprises a pipe body, a corrosion-resistant layer attached to the inner wall of the pipe body, and a plurality of metal wire meshes arranged on the inner wall of the pipe body, wherein each metal wire mesh covers the corrosion-resistant layer, and adjacent metal wire meshes are connected through elastic expansion joints. The application can protect the corrosion-resistant layer in the pipe, and prolong the service life of the corrosion-resistant layer in the fly ash conveying pipeline.

Description

Technical Field

[0001] This invention relates to the field of fly ash pipelines, specifically a fly ash conveying pipeline. Background Technology

[0002] Currently, fly ash is generally conveyed pneumatically, using pressurized gas to pressurize it and transport it through pipelines. Because fly ash is corrosive, a corrosion-resistant layer needs to be attached to the inner wall of the pipeline. Some existing technologies use ceramic sheets as this layer. However, in actual use, the fly ash entering the pipeline has a certain impact force, which can cause the corrosion-resistant layer to impact and abrade, leading to cracking and peeling. Summary of the Invention

[0003] This invention provides a fly ash conveying pipeline to solve the problem of easy peeling of the corrosion-resistant layer in existing fly ash conveying pipelines.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A fly ash conveying pipeline includes a pipe body with a corrosion-resistant layer attached to the inner wall of the pipe body. The inner wall of the pipe body is also provided with multiple sections of metal wire mesh, which are distributed axially within the pipe body. Each section of metal wire mesh covers the corrosion-resistant layer, and adjacent metal wire meshes are connected by a telescopic elastic element.

[0006] Furthermore, end rings are installed in the two ends of the tube body, and metal wire meshes near the two ends are fixed to the end rings of the corresponding ends.

[0007] Furthermore, end rings are installed in the two ends of the tube body, and a metal wire mesh near one end is fixed to the corresponding end ring. A drive rod is connected to the metal wire mesh near the other end. The drive rod slides through the corresponding end ring. A drive mechanism is also installed in the end ring through which the drive rod passes, and the drive mechanism is connected to the drive rod.

[0008] Furthermore, the telescopic elastic element is a spring.

[0009] Furthermore, the corrosion-resistant layer is a chromium compound layer.

[0010] Furthermore, the metal wire mesh is hot-dip galvanized steel wire mesh.

[0011] In this invention, multiple sections of wire mesh are installed inside the pipe to cover and support the corrosion-resistant layer, preventing it from detaching. Adjacent wire mesh sections are connected by elastic expansion joints. When fly ash with a certain impact force impacts the inner wall of the pipe, the wire mesh is first subjected to stress, causing each section to vibrate elastically. This vibration serves two purposes: firstly, it forms a barrier during movement, minimizing the impact of fly ash on the corrosion-resistant layer; secondly, it allows fly ash that has already reached the corrosion-resistant layer to be removed through the vibration of the wire mesh, preventing its accumulation and thus protecting the corrosion-resistant layer.

[0012] Compared with existing technologies, the present invention can protect the corrosion-resistant layer inside the pipe and improve the service life of the corrosion-resistant layer in fly ash conveying pipelines. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the structure of an embodiment of the present invention. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] like Figure 1 As shown, this embodiment discloses a fly ash conveying pipeline, including a pipe body 1, with a corrosion-resistant layer 2 attached to the inner wall of the pipe body 1. In this embodiment, a chromium compound is used as the corrosion-resistant layer 2, which has good corrosion resistance.

[0016] End rings 3 are coaxially fixedly installed in the two ends of the pipe body 1. Several metal wire meshes 4 are provided between the two end rings 3. Each metal wire mesh 4 is distributed axially inside the pipe body 1. Each metal wire mesh 4 is made of hot-dip galvanized steel wire. Each metal wire mesh 4 covers the corrosion-resistant layer of the inner wall of the pipe body 1 at the corresponding position. The corrosion-resistant layer 2 is supported by each metal wire mesh 4.

[0017] Several elastic elements are connected between the end faces of adjacent wire meshes 4. These elastic elements can be made of elastic plastic, springs, etc. In this embodiment, springs are used as an example. The springs 5 ​​between adjacent wire meshes 4 are evenly distributed in the circumferential direction, thereby forming a structure in which each wire mesh 4 can elastically vibrate axially through the springs 5.

[0018] In each of the metal wire meshes 4, the first metal wire mesh corresponding to the front end of the pipe body 1 is fixed to the end ring 3 of the front end of the pipe body 1, and the last metal wire mesh corresponding to the rear end of the pipe body 1 is fixed to the end ring of the rear end of the pipe body 1. When the fly ash with impact force impacts the inner wall of the pipe body 1, it will generate an impact force on the metal wire mesh 4, causing the metal wire mesh 4 to vibrate axially. When the metal wire mesh 4 vibrates axially, it forms a barrier to prevent most of the fly ash from impacting the corrosion-resistant layer 2 of the inner wall of the pipe body 1. A small portion of the fly ash that passes through the metal wire mesh and reaches the corrosion-resistant layer 2 will be scraped off by the axially vibrating metal wire mesh 4.

[0019] In this embodiment, the last metal wire mesh corresponding to the rear end of the pipe body 1 can also be connected to the end ring of the rear end of the pipe body through several driving rods. Specifically, at least one driving rod 6 is fixedly connected to the end face of the last metal wire mesh. The driving rod 6 passes through the end ring of the rear end of the pipe body and slides relative to the end ring of the rear end of the pipe body. A linear push rod motor 7 is installed on the end face of the end ring of the rear end of the pipe body as a driving mechanism. The output shaft of the linear push rod motor 7 is connected to the driving rod 6. The linear push rod motor 7 causes the driving rod 6 to move linearly in the back and forth direction. In the above manner, a driving force can be actively applied to each metal wire mesh to make each metal wire mesh vibrate axially.

[0020] The embodiments described herein are merely preferred embodiments of the invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the invention without departing from the design concept of the invention should fall within the protection scope of the invention. The technical content for which protection is sought in this invention has been fully described in the claims.

Claims

1. A fly ash conveying pipeline, comprising a pipe body, wherein the inner wall of the pipe body is coated with a corrosion-resistant layer, characterized in that, The inner wall of the pipe is also provided with multiple sections of metal wire mesh, which are distributed along the axial direction inside the pipe. Each section of metal wire mesh covers the corrosion-resistant layer, and adjacent metal wire meshes are connected by a telescopic elastic element. End rings are installed in the two ends of the tube body; a metal wire mesh near one of the tube openings is fixed to the corresponding end ring, and a drive rod is connected to the metal wire mesh near the other tube opening. The drive rod slides through the corresponding end ring, and a drive mechanism is also installed in the end ring through which the drive rod passes. The drive mechanism is connected to the drive rod.

2. The fly ash conveying pipeline according to claim 1, characterized in that, The elastic element is a spring.

3. The fly ash conveying pipeline according to claim 1, characterized in that, The corrosion-resistant layer is a chromium compound layer.

4. A fly ash conveying pipeline according to claim 1, characterized in that, The metal wire mesh is hot-dip galvanized steel wire mesh.

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