Modularized connecting pipe lining check ring structure

Abstract

A modularized connecting pipe lining check ring structure mainly relates to the field of petrochemical engineering and comprises an opening connecting pipe installed on a cylinder body, a lining check ring is arranged on the left side of the opening connecting pipe located in the cylinder body, and the opening connecting pipe between the lining check ring and the cylinder body is wrapped with ceramic fiber paper. A lining module is arranged on the outer wall face, close to the ceramic fiber paper, of the lining check ring and completely covers the outer wall face of the lining check ring, and a plurality of fasteners are further arranged in the lining check ring. By means of the structure, no gap is generated between the lining check ring and the barrel lining, and the problem that the lining check ring cannot be tightly attached to the barrel lining after being pre-bent is solved.

Description

Technical Field

[0001] This utility model relates to the petrochemical field, and mainly to a modular nozzle lining retaining ring structure. Background Technology

[0002] The structure of the open-end nozzle lining retainer in a normal lined equipment includes an open-end nozzle mounted on the cylinder, followed by hand-applying or pouring the cylinder lining along the inner wall of the cylinder, but not completely covering the open-end nozzle. Ceramic fiber paper is then wrapped around the outer wall surface of the cylinder lining that contacts the open-end nozzle. Finally, a lining retainer is welded onto the open-end nozzle to ensure a tight fit with the cylinder lining. The purpose of the post-welded lining retainer is to address the possibility of tiny gaps between the lining and the outer metal wall of the nozzle, into which high-speed catalyst particles may penetrate and erode the metal shell of the nozzle. Installing the lining retainer tightens the lining, seals the gaps, and reduces the risk of penetration. The post-welded lining retainer also serves to address the issue of lining cracks caused by thermal stress, vibration, or airflow erosion at the nozzle due to changes in catalyst flow. Installing the lining retainer mechanically tightens the lining, enhances the stability of the lining and nozzle edge structure, and prevents peeling.

[0003] However, in reality, when the lining retaining ring is pre-bent and welded to the nozzle, it does not achieve the requirement of a tight fit with the cylinder lining. This results in a certain gap between the cylinder lining and the lining retaining ring (e.g., Figure 1 , Figure 2 As shown in the figure, the erosion of catalyst particles with high flow rates in the gaps is more severe, and may even hollow out the lining layer of the outer wall of the pipe. Summary of the Invention

[0004] To address the aforementioned technical problems, the purpose of this utility model is to propose a modular nozzle lining retaining ring structure.

[0005] The purpose of this utility model is achieved by the following technical solution. A modular nozzle lining retainer structure according to this utility model includes an open nozzle mounted on a cylinder. A retainer retainer is provided on the side of the open nozzle located inside the cylinder away from the inner wall of the cylinder. Ceramic fiber paper is wrapped around the nozzle between the retainer retainer and the cylinder. A lining module is provided on the outer wall surface of the retainer retainer near the ceramic fiber paper. The lining module completely covers the outer wall surface of the retainer retainer. Multiple fasteners are also provided inside the retainer retainer.

[0006] Furthermore, the lining module has a stepped structure and the size of the lining module decreases along the direction away from the lining retaining ring.

[0007] Furthermore, the fastener is an anchor pin connected to the outer wall surface of the lining retaining ring.

[0008] Based on the foregoing technical solution, this utility model has the following beneficial effects:

[0009] (1) The structure of the nozzle lining retainer ring ensures that there is no gap between the lining retainer ring and the cylinder lining, which solves the problem that the lining retainer ring cannot be tightly fitted to the cylinder lining when it is installed after pre-bending in the prior art. This avoids the problem that high-velocity catalyst particles may scour the gap between the lining retainer ring and the cylinder lining, or even hollow out the lining layer of the outer wall of the open nozzle.

[0010] (2) The junction edge between the lining module and the cylinder lining in the pipe lining retaining ring structure can be smoothly transitioned, which is convenient for maintenance.

[0011] (3) The lining module in the pipe lining retaining ring structure is designed as a stepped structure. This structure makes the connection between the lining module and the cylinder lining more secure, and the design of this structure can extend the heat dissipation path and avoid heat loss inside the cylinder.

[0012] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the existing nozzle lining retaining ring structure.

[0014] Figure 2 yes Figure 1 Enlarged view of section I in the middle.

[0015] Figure 3 This is a schematic diagram of a modular nozzle liner retaining ring structure according to this utility model.

[0016] [Attached image labels]

[0017] 1. Cylinder body, 2. Opening nozzle, 3. Lining retaining ring, 4. Ceramic fiber paper, 5. Anchor nail, 6. Lining, 7. Lining module, 8. Cylinder body lining. Detailed Implementation

[0018] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings:

[0019] Please see Figure 3 ,exist Figure 1The existing pipe lining retainer structure shown includes an open pipe 2 installed on the cylinder 1, and a retainer 3 located on the left side of the pipe inside the cylinder. This utility model provides a modular pipe lining retainer structure. When installing the retainer 3 on the open pipe 2, the positioning dimensions of the retainer 3 are determined by laying out according to the cylinder lining thickness, and the retainer 3 is welded onto the open pipe according to the positioning dimensions. It also includes wrapping ceramic fiber paper 4 around the open pipe portion between the retainer 3 and the inner wall of the cylinder 1. Then, multiple fasteners are provided on the outer wall surface of the retainer 3 near the ceramic fiber paper 4. In this embodiment, anchoring nails 5 are welded to the outer wall surface of the retainer 3, and lining 6 is hand-applied or cast around the anchoring nails 5, so that the lining module 7 formed by hand-applied or cast lining 6 completely covers the retainer lining. The lining module 7 has a stepped structure, which extends the heat dissipation path and avoids heat loss inside the cylinder. Heat dissipation; furthermore, the size of the lining module decreases in the direction away from the lining retainer ring, specifically: the lining module portion near the lining retainer ring 3 is a large diameter section, and the lining module portion away from the lining retainer ring is a small diameter section, and the large diameter section completely covers the outer wall surface of the lining retainer ring 3; the opening pipe, lining retainer ring, anchor nail, lining module, and ceramic fiber paper are prefabricated into an integral structure, and after it is installed on the cylinder, the cylinder lining 8 is hand-applied or poured along the inner wall of the cylinder (in this embodiment, the lining 6 and the cylinder lining 8 are made of the same material), so that the inner ring surface of the cast cylinder lining fits against the outer wall surface of the lining retainer ring; the junction of the large diameter section and the small diameter section of the lining module 7 with the formed cylinder lining 8 is a toothed connection, making the connection between the cylinder lining 8 and the lining module 7 more secure; at the same time, the junction of the cylinder lining and the lining module can be polished to a smooth transition, which is convenient for repair.

[0020] In other embodiments of this utility model, other types of fasteners may be used instead of anchor nails.

[0021] In other embodiments of this utility model, the lining module can also be hand-painted or cast into other shapes such as stepped or conical.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the design and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A modular spool liner retainer ring structure, characterized by: It includes an open pipe (2) installed on the cylinder (1), and a lining retainer (3) is provided on the side of the open pipe located inside the cylinder away from the inner wall of the cylinder. Ceramic fiber paper (4) is wrapped around the open pipe between the lining retainer and the cylinder. A lining module (7) is provided on the outer wall surface of the lining retainer (3) near the ceramic fiber paper (4). The lining module completely covers the outer wall surface of the lining retainer. Multiple fasteners are also provided inside the lining retainer.

2. A modular spool liner retainer ring structure as defined in claim 1 wherein: The lining module (7) has a stepped structure and the size of the lining module decreases in the direction away from the lining retaining ring (3).

3. The modular nozzle liner retaining ring structure according to claim 1, characterized in that: The fastener is an anchor bolt (5) connected to the outer wall of the lining retaining ring.

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