Wear-resistant elbow joint

Abstract

The utility model discloses a wear-resistant elbow joint, which is used for conveying solid particles and comprises an elbow, the elbow consists of a bent part, a horizontal part and a vertical part, the horizontal part and the vertical part are integrally connected to two ends of the bent part, a grid plate is connected onto the inner wall of the bent part, the surface of the grid plate, which is in contact with the inner wall of the bent part, is a smooth surface, and the surface of the grid plate, which is in contact with a catalyst, is a grid surface. According to the utility model, the problem that the pipe wall at the solid particle transportation bending part is damaged is well solved.

Description

Technical Field

[0001] The utility model relates to petrochemical production, and more specifically to a wear-resistant elbow joint. Background Art

[0002] In the solid catalyst delivery system in the petrochemical production field, the wind speed is as high as 12m / s-16m / s. When the airflow carries the sharp-angled catalyst particles through the turning point of the elbow, it will scrape the outer wall of the elbow, which has a great destructive effect on the elbow. Once the pipe wall is damaged, a large number of high-speed catalyst particles will be sprayed out, posing a huge threat to the surrounding staff.

[0003] In order to provide partial protection for the bends, an additional cover plate is used. However, this method has a short service life, is prone to air leakage, and is not convenient to install. Utility Model Content

[0004] In view of the above problems, the utility model provides a wear-resistant elbow pipe joint, which solves the problem of pipe wall damage at the bend during solid particle transportation.

[0005] A wear-resistant elbow joint is used to transport solid particles, including an elbow, which consists of a bending portion and a horizontal portion and a vertical portion integrally connected at both ends of the bending portion. A mesh plate is connected to the inner wall of the bending portion, and the surface of the mesh plate in contact with the inner wall of the bending portion is a smooth surface, and the surface in contact with a catalyst is a mesh surface.

[0006] Optionally, the other end of the horizontal portion is connected to a first Venturi suction pipe, and the vertical portion is connected to a second Venturi suction pipe.

[0007] Optionally, the waist-to-diameter ratio of the first Venturi suction tube is 0.6-0.7, and the waist-to-diameter ratio of the second Venturi suction tube is 0.6-0.7.

[0008] Optionally, the grid groove size of the grid surface is 5mmx5mm*10mm~10mmx10mm*15mm.

[0009] Optionally, the grid plate is made of wear-resistant rubber.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The wear-resistant elbow pipe joint provided by the utility model solves the problem of pipe wall damage at a bending position during solid particle transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 This is a schematic diagram of the overall structure of the wear-resistant elbow pipe joint of the utility model;

[0014] Figure 2 It is a schematic diagram of an unfolded top view of the grid plate of the utility model.

[0015] Explanation of the reference numerals: 1. bent pipe, 2. bent portion, 3. horizontal portion, 4. vertical portion, 5. grid plate, 6. grid surface, 7. grid groove, 8. first venturi suction pipe, 9. second venturi suction pipe, 10. connecting flange. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0017] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, "multiple" means two or more, unless otherwise precisely and specifically specified.

[0018] The terms "first", "second", "third", "fourth", etc. (if any) in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] The following specific embodiments are used to describe the technical solution of the utility model in detail. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0021] Example 1

[0022] Please refer to Figure 1-Figure 2 , Figure 1 This is a schematic diagram of the overall structure of the wear-resistant elbow pipe joint provided by the utility model. Figure 2 It is a schematic diagram of a top view of the grid plate of the utility model.

[0023] A wear-resistant elbow joint comprises an elbow 1, wherein the elbow 1 consists of a bending portion 2 and a horizontal portion 3 and a vertical portion 4 integrally connected at both ends of the bending portion 2. A mesh plate 5 is connected to the inner wall of the bending portion 2, and the surface of the mesh plate 5 in contact with the inner wall of the bending portion 2 is a smooth surface, and the surface in contact with the catalyst is a mesh surface 6.

[0024] By connecting the mesh plate 5 to the inner wall of the bend 2, when the catalyst passes through the bend 2, the object impacted by the catalyst is not the inner wall of the bend 2, but the catalyst accumulated on the mesh plate 5 (of course, at the beginning, the catalyst will automatically fill the mesh plate 5, so it is the catalyst that is impacted, and the inner wall of the bend 2 is not impacted.

[0025] Those skilled in the art should understand that the mesh plate 5 can be connected to the inner wall of the bending portion 2 by a fixed connection or a detachable connection. The fixed connection can be welding or other fixed connection methods. The detachable connection can be a screw and nut connection or other detachable connection methods. No special limitation is made here, as long as the mesh plate 5 can be connected to the inner wall of the bending portion 2.

[0026] In one or more specific embodiments of the present invention, the size of the grid groove 7 of the grid surface 6 is 5mmx5mm*10mm~10mmx10mm*15mm, and a better wear-resistant effect can be achieved within this range.

[0027] In one or more specific embodiments of the present invention, the mesh plate 5 is made of wear-resistant rubber, which can reduce the overall weight of the entire elbow joint.

[0028] Example 2

[0029] Although the wear-resistant elbow joint of Example 1 is wear-resistant, the fixed catalyst is easily blocked at the bend. After the grid plate is installed, the catalyst running channel becomes smaller at the bend than before the installation, and the possibility of blockage is greater.

[0030] Please refer again Figure 1-Figure 2 A wear-resistant elbow joint comprises an elbow 1, which consists of a bending portion 2 and a horizontal portion 3 and a vertical portion 4 integrally connected at both ends of the bending portion 2. A mesh plate 5 is connected to the inner wall of the bending portion 2. The surface of the mesh plate 5 in contact with the inner wall of the bending portion 2 is a smooth surface, and the surface in contact with the catalyst is a mesh surface 6. The other end of the horizontal portion 3 is connected to a first Venturi suction pipe 8, and the vertical portion 4 is connected to a second Venturi suction pipe 9.

[0031] By connecting the mesh plate 5 to the inner wall of the bend 2, when the catalyst passes through the bend 2, the object impacted by the catalyst is not the inner wall of the bend 2, but the catalyst accumulated on the mesh plate 5 (of course, at the beginning, the catalyst will automatically fill the mesh plate 5, so it is the catalyst that is impacted, and the inner wall of the bend 2 is not impacted; suction is performed through the first venturi suction pipe 8 and the second venturi suction pipe 9 to promote the movement of catalyst particles and prevent blockage.

[0032] Those skilled in the art should understand that the mesh plate 5 can be connected to the inner wall of the bending portion 2 by a fixed connection or a detachable connection. The fixed connection can be welding or other fixed connection methods. The detachable connection can be a screw and nut connection or other detachable connection methods. No special limitation is made here, as long as the mesh plate 5 can be connected to the inner wall of the bending portion 2.

[0033] In one or more specific embodiments of the present invention, the size of the grid groove 7 of the grid surface 6 is 5mmx5mm*10mm~10mmx10mm*15mm, and a better wear-resistant effect can be achieved within this range.

[0034] In one or more specific embodiments of the present invention, the mesh plate 5 is made of wear-resistant rubber, which can reduce the overall weight of the entire elbow joint.

[0035] It should be understood by those skilled in the art that the first venturi suction pipe 8 and the second venturi suction pipe 9 can be connected to the bent pipe 1 through a connecting flange 10, or other connection methods can be used. No special limitation is made here, and those skilled in the art can choose according to their needs, as long as they are connected as one to work normally.

[0036] In one or more specific embodiments of the present invention, the waist-to-diameter ratio of the first Venturi suction pipe 8 is 0.6-0.7, and the waist-to-diameter ratio of the second Venturi suction pipe 9 is 0.6-0.7. Within this range, the suction phenomenon can be smoothly generated, promoting the transportation of catalyst particles.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A wear-resistant elbow pipe joint for conveying solid particles, comprising an elbow pipe (1), wherein the elbow pipe (1) comprises a bending portion (2) and a horizontal portion (3) and a vertical portion (4) integrally connected at both ends of the bending portion (2), characterized in that: A mesh plate (5) is connected to the inner wall of the bent portion (2); the surface of the mesh plate (5) in contact with the inner wall of the bent portion (2) is a smooth surface, and the surface in contact with the catalyst is a mesh surface (6).

2. The wear-resistant elbow pipe joint according to claim 1, characterized in that: The other end of the horizontal portion (3) is connected to a first Venturi suction pipe (8), and the vertical portion (4) is connected to a second Venturi suction pipe (9).

3. The wear-resistant elbow pipe joint according to claim 2, characterized in that: The waist-to-diameter ratio of the first Venturi suction tube (8) is 0.6-0.7, and the waist-to-diameter ratio of the second Venturi suction tube (9) is 0.6-0.

7.

4. The wear-resistant elbow pipe joint according to any one of claims 1 to 3, characterized in that: The size of the grid grooves (7) of the grid surface (6) is 5mmx5mm*10mm to 10mmx10mm*15mm.

5. The wear-resistant elbow pipe joint according to claim 1, characterized in that: The grid plate (5) is made of wear-resistant rubber.

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