Wear-resistant and high-temperature-resistant elbow

Abstract

The utility model discloses a wear-resistant and high-temperature-resistant elbow which comprises an elbow body, a gas flow channel penetrating through the other end of the elbow body from one end of the elbow body is arranged in the elbow body, a bent section is arranged in the middle of the elbow body, the bent section is defined by an outer arc-shaped area and an inner arc-shaped area, and gas flowing into the gas flow channel impacts the outer arc-shaped area and then flows out. An inner flitch plate is fixed to the inner surface of the outer arc-shaped area, the outline of the inner flitch plate is matched with the shape of the inner surface of the outer arc-shaped area, the inner flitch plate is matched with the inner surface of the outer arc-shaped area in an attached mode, a wear-resistant layer is arranged on the face, facing the gas flow channel, of the inner flitch plate, and a high-temperature-resistant layer is attached to the outer surface of the elbow body. The abrasion resistance of the inner surface of the outer arc-shaped area with the weakest abrasion resistance of the elbow can be effectively improved, and the service life of the abrasion-resistant and high-temperature-resistant elbow is greatly prolonged.

Description

Technical Field

[0001] This utility model belongs to the technical field of elbow structures, and particularly relates to a wear-resistant and high-temperature resistant elbow. Background Technology

[0002] In modern industry, pipeline systems are an indispensable component of production and transportation processes, widely used in industries such as chemical, power, metallurgy, and mining. These pipeline systems often face challenges from fluid abrasion and temperature variations during the transport of liquids, gases, and solid particles, especially at pipe bends where the fluid flow direction changes rapidly, leading to drastic fluctuations in fluid velocity and pressure. The turbulence and eddies generated by these changes cause the fluid's kinetic energy to exert a greater impact force on the pipe's inner wall, thus accelerating wear. The following factors are the main causes of pipeline wear:

[0003] Flow velocity: High-velocity fluids exert a great impact on the inner wall of the pipe, especially in the bend area, where friction and impact interact, causing significant wear.

[0004] Solid particles: Many flowing media contain solid particles (such as soil, coal ash, etc.). These particles, driven by the fluid, cause friction and erosion on the inner wall of the pipe, leading to increased wear.

[0005] Temperature: In high-temperature environments, the physical properties of some materials will change, affecting their wear resistance and even causing the materials to soften, increasing the risk of wear.

[0006] To address these issues, wear-resistant and high-temperature resistant elbows have emerged. These elbows utilize highly wear-resistant and high-temperature-resistant materials, such as alloy steel, ceramics, and polymer composites, which possess excellent wear resistance and high-temperature stability. For example, nickel-based alloys (such as Inconel) and ceramic coatings are used to withstand extreme temperature conditions while reducing wear.

[0007] Wear-resistant and high-temperature resistant elbows not only solve the problem of wear at pipe bends but also extend equipment lifespan. This means businesses can significantly reduce maintenance and replacement costs due to wear, lower operational risks, and ensure smooth fluid transport while reducing flow resistance, thereby improving transport efficiency. Efficient piping systems not only improve productivity but also meet the demands for efficient logistics.

[0008] In practical use, it has been found that even when wear-resistant materials are used to make wear-resistant and high-temperature resistant elbows, the bending section of the elbow, especially the outer arc-shaped area of ​​the bending section, suffers significant wear as the service time increases, which may affect the normal use of the elbow. Therefore, this utility model has made technical improvements to address the technical problem of significant wear in the outer arc-shaped area of ​​the bending section of the wear-resistant and high-temperature resistant elbow. Utility Model Content

[0009] The technical problem to be solved by this utility model is to provide a wear-resistant and high-temperature resistant elbow in response to the above-mentioned shortcomings of the existing elbow.

[0010] To achieve the above-mentioned technical objectives, the technical solution adopted by this utility model is as follows:

[0011] A wear-resistant and high-temperature resistant elbow includes an elbow body with a gas flow channel extending from one end to the other. The elbow body has a bending section in the middle, which is formed by an outer arc-shaped area and an inner arc-shaped area. Gas flowing into the gas flow channel impacts the outer arc-shaped area and then flows out. An inner plate is fixed on the inner surface of the outer arc-shaped area. The outline of the inner plate is adapted to the shape of the inner surface of the outer arc-shaped area. The inner plate fits snugly against the inner surface of the outer arc-shaped area. A wear-resistant layer is provided on the side of the inner plate facing the gas flow channel. A high-temperature resistant layer is attached to the outer surface of the elbow body.

[0012] To optimize the above technical solution, the specific measures also include:

[0013] The aforementioned elbow body includes a front horizontal section, a bending section, and a rear vertical section connected in sequence. A front flange is fixed to the front end of the front horizontal section, and a rear flange is fixed to the lower end of the rear vertical section.

[0014] Both the front and rear flanges mentioned above are provided with several threaded holes, which are arranged in equal arcs around the axis of the corresponding flange.

[0015] The outer arc-shaped area and the inner arc-shaped area are integrally formed. A slide rail is provided at the connection between the outer arc-shaped area and the inner arc-shaped area. The slide rail extends from the front end of the bending section to the rear end of the bending section. The left and right ends of the inner plate are inserted into the slide rail and can slide back and forth along the slide rail.

[0016] The rear end of the slide rail is closed. When the rear end of the inner plate slides to the rear end of the slide rail, the rear end of the slide rail blocks the inner plate from moving further backward, thereby positioning the inner plate in the slide rail. At this time, the inner plate fits perfectly with the inner surface of the outer arc-shaped area.

[0017] The entire inner panel described above is made of wear-resistant material, which may be an alloy, ceramic, or polyurethane.

[0018] The aforementioned high-temperature resistant layer is a polytetrafluoroethylene coating, a polyimide coating, or a silicone resin coating.

[0019] The aforementioned high-temperature resistant layer covers the outer surfaces of the front horizontal section, the bending section, and the rear vertical section, while the front flange and the rear flange do not have a high-temperature resistant layer.

[0020] The aforementioned front horizontal section, bent section, and rear vertical section are made of nickel-based alloy material.

[0021] The aforementioned front flange is fixedly connected to the front horizontal section by welding, and the rear flange is fixedly connected to the rear vertical section by welding. Both the front and rear flanges are made of stainless steel.

[0022] The beneficial effects of this utility model are:

[0023] 1. This utility model has an inner plate fixed on the inner surface of the outer arc-shaped area of ​​the wear-resistant and high-temperature resistant elbow, thereby increasing the thickness of the inner surface of the outer arc-shaped area of ​​the elbow. Moreover, the inner plate is provided with a wear-resistant layer, which can effectively improve the wear resistance of the inner surface of the outer arc-shaped area, which is the weakest in terms of wear resistance, and greatly improve the service life of the wear-resistant and high-temperature resistant elbow.

[0024] 2. This utility model further includes a slide rail at the connection between the outer arc-shaped area and the inner arc-shaped area, with the rear end of the slide rail closed. The inner plate is inserted from the front end of the elbow, slides along the slide rail to the target position of the bending section, and is then stopped and positioned by the rear end of the slide rail. By setting the slide rail, the inner plate can be removed. After one or two years of use, the wear-resistant and high-temperature resistant elbow can be maintained by sliding the inner plate out along the slide rail in the opposite direction and replacing it with a new inner plate, thereby further extending the service life of the wear-resistant and high-temperature resistant elbow and reducing the operating cost of the elbow. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a wear-resistant and high-temperature resistant elbow according to this utility model;

[0026] Figure 2 This is a schematic diagram of the internal structure of a wear-resistant and high-temperature resistant elbow without an inner lining plate.

[0027] Figure 3 This is a schematic diagram of the internal structure of a wear-resistant and high-temperature resistant elbow with an inner lining plate inserted.

[0028] Figure 4 yes Figure 3 The left view;

[0029] Figure 5 yes Figure 3 A bottom view;

[0030] Figure 6 This is a structural diagram of the inner panel;

[0031] Figure 7 yes Figure 6 The left view.

[0032] The attached diagram is labeled as follows: elbow body 1, bending section 11, outer arc-shaped area 11a, inner arc-shaped area 11b, front horizontal section 12, rear vertical section 13, front flange 14, rear flange 15, gas flow channel 2, inner lining plate 3, high temperature resistant layer 4, and slide rail 5. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the application is described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. All other embodiments obtained by those skilled in the art based on the embodiments provided in this application without inventive effort are within the scope of protection of this application.

[0034] Obviously, the accompanying drawings described below are merely some examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without any inventive effort. Furthermore, it is understood that although the efforts made in this development process may be complex and lengthy, for those skilled in the art related to the content disclosed in this application, any changes to design, manufacturing, or production based on the technical content disclosed in this application are merely conventional technical means and should not be construed as insufficient disclosure of the content of this application.

[0035] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments without conflict.

[0036] Unless otherwise defined, the technical or scientific terms used in this application shall have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms “a,” “an,” “an,” “the,” and similar words used in this application do not indicate quantity limitation and may indicate singular or plural. The terms “comprising,” “including,” “having,” and any variations thereof used in this application are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or device that includes a series of steps or units (elements) is not limited to the listed steps or units, but may also include steps or units not listed, or may include other steps or units inherent to these processes, methods, products, or devices. The terms “connected,” “linked,” “coupled,” and similar words used in this application are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The terms “multiple” / “several” used in this application refer to two or more. “And / or” describes the relationship between related objects, indicating that three relationships may exist; for example, “A and / or B” can indicate: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following objects are in an "or" relationship. The terms "first," "second," and "third" used in this application are merely to distinguish similar objects and do not represent a specific ordering of the objects.

[0037] like Figures 1-7 As shown, the wear-resistant and high-temperature resistant elbow of this utility model mainly includes a bending section 11, a front horizontal section 12, a rear vertical section 13, a front flange 14, a rear flange 15, an inner plate 3, a high-temperature resistant layer 4, and a slide rail 5.

[0038] The angle between the front horizontal segment 12 and the rear vertical segment 13 is 90°. Figures 1-3 It can be seen that the front horizontal section 12 is horizontal, and the rear vertical section 13 is vertical. The rear end of the front horizontal section 12 and the upper end of the rear vertical section 13 are connected by a bending section 11. The elbow body 1 has a gas flow channel 2, and the gas flows from one end of the gas flow channel 2 to the other end. The bending section 11 is formed by the outer arc-shaped area 11a and the inner arc-shaped area 11b. Figure 2 It can be seen that when the gas turns in the gas flow channel 2, the impact area is the inner surface of the outer arc-shaped region 11a. The particles carried in the airflow will rub against the inner surface of the outer arc-shaped region 11a, which will result in the wear degree of the inner surface of the outer arc-shaped region 11a being significantly higher than that of other regions.

[0039] This utility model provides a slide rail 5 at the connection between the outer arc-shaped region 11a and the inner arc-shaped region 11b. The slide rail 5 extends from the front end of the bent section 11 to the rear end of the bent section 11. The front end of the slide rail 5 is an open end, and the rear end is a closed end. Figure 4 and Figure 5 The comparison shows thatFigure 4 Because the front end of slide rail 5 is open, the inner panel 3 can be seen. Figure 5 The rear end of the middle slide rail 5 is closed, so the inner plate 3 is not visible. The inner plate 3 is semi-circular, and its outline conforms to the shape of the inner surface of the outer arc-shaped area 11a. When installing the inner plate 3, insert it from the front horizontal section 12, and the left and right ends are respectively inserted into the two side slide rails 5. The slide rails 5 can both guide the inner plate 3 to continue to be inserted and prevent the inner plate 3 from rotating. After the end of the inner plate 3 is inserted into the rear end of the slide rail 5, it is blocked by the rear end of the slide rail 5, and the inner plate 3 is in place, as shown in the figure. Figure 3 As shown, at this time, the inner plate 3 is fitted and matched with the inner surface of the outer arc-shaped area 11a, and is used as the wear-resistant layer on the inner surface of the outer arc-shaped area 11a.

[0040] The elbow body 1 is fixed to a front flange 14 at its front end and a rear flange 15 at its lower end. Both the front flange 14 and the rear flange 15 are provided with threaded holes, which are used to connect the elbow body 1 to the pipeline.

[0041] The outer surface of the elbow body 1 is also covered with a high-temperature resistant layer to prevent the temperature inside the elbow body 1 from being conducted to the outer surface of the elbow body 1. This can prevent heat loss from the gas and also prevent the elbow body 1 from causing injury due to high temperature.

[0042] The inner lining plate 3 is made of alloy, ceramic, or polyurethane. The high-temperature resistant layer 4 is made of polytetrafluoroethylene coating, polyimide coating, or silicone resin coating, which can be selected according to actual needs.

[0043] When the inner plate 3 needs to be replaced after a period of use, simply remove the elbow body 1, slide the inner plate 3 out from the front end of the elbow body 1, and then replace it with a new inner plate 3.

[0044] The above are merely preferred embodiments of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are within its protection scope. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should be considered within its protection scope.

Claims

1. A wear-resistant and high-temperature resistant elbow, comprising an elbow body (1), wherein a gas flow channel (2) is provided inside the elbow body (1) extending from one end to the other, and the elbow body (1) has a bending section (11) in the middle, the bending section (11) being formed by an outer arc-shaped area (11a) and an inner arc-shaped area (11b), wherein gas flowing into the gas flow channel (2) impacts the outer arc-shaped area (11a) and flows out, characterized in that: An inner plate (3) is fixed on the inner surface of the outer arc-shaped area (11a). The outline of the inner plate (3) is adapted to the shape of the inner surface of the outer arc-shaped area (11a). The inner plate (3) fits into the inner surface of the outer arc-shaped area (11a). A wear-resistant layer is provided on the side of the inner plate (3) facing the gas flow channel (2). A high-temperature resistant layer (4) is attached to the outer surface of the elbow body (1).

2. The wear-resistant and high-temperature resistant elbow according to claim 1, characterized in that: The elbow body (1) includes a front horizontal section (12), a bending section (11) and a rear vertical section (13) connected in sequence. The front end of the front horizontal section (12) is fixed with a front flange (14), and the lower end of the rear vertical section (13) is fixed with a rear flange (15).

3. The wear-resistant and high-temperature resistant elbow according to claim 2, characterized in that: Both the front flange (14) and the rear flange (15) are provided with a number of threaded holes, which are arranged in equal arc around the axis of the corresponding flange.

4. The wear-resistant and high-temperature resistant elbow according to claim 3, characterized in that: The outer arc-shaped area (11a) and the inner arc-shaped area (11b) are integrally formed. A slide rail (5) is provided at the connection between the outer arc-shaped area (11a) and the inner arc-shaped area (11b). The slide rail (5) extends from the front end of the bent section (11) to the rear end of the bent section (11). The left and right ends of the inner plate (3) are inserted into the slide rail (5) and can slide back and forth along the slide rail (5).

5. The wear-resistant and high-temperature resistant elbow according to claim 4, characterized in that: The rear end of the slide rail (5) is closed. When the rear end of the inner plate (3) slides to the rear end of the slide rail (5), the rear end of the slide rail (5) blocks the inner plate (3) from moving further backward, thereby positioning the inner plate (3) in the slide rail (5). At this time, the inner plate (3) fits and cooperates with the inner surface of the outer arc-shaped area (11a).

6. The wear-resistant and high-temperature resistant elbow according to claim 1, characterized in that: The entire inner panel (3) is made of wear-resistant material, which is an alloy, ceramic or polyurethane.

7. The wear-resistant and high-temperature resistant elbow according to claim 1, characterized in that: The high-temperature resistant layer (4) is a polytetrafluoroethylene coating, a polyimide coating, or a silicone resin coating.

8. The wear-resistant and high-temperature resistant elbow according to claim 2, characterized in that: The high-temperature resistant layer (4) wraps the outer surfaces of the front horizontal section (12), the bent section (11) and the rear vertical section (13), while the front flange (14) and the rear flange (15) are not provided with the high-temperature resistant layer (4).

9. The wear-resistant and high-temperature resistant elbow according to claim 1, characterized in that: The front horizontal section (12), the bent section (11) and the rear vertical section (13) are made of nickel-based alloy material.

10. The wear-resistant and high-temperature resistant elbow according to claim 1, characterized in that: The front flange (14) is fixedly connected to the front horizontal section (12) by welding, and the rear flange (15) is fixedly connected to the rear vertical section (13) by welding. The front flange (14) and the rear flange (15) are made of stainless steel.

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