High-chromium-nickel-molybdenum alloy composite reducer pipeline for desulfurization system

Abstract

The utility model relates to the technical field of large-and-small-head pipelines, and discloses a high-chromium-nickel-molybdenum alloy composite large-and-small-head pipeline for a desulfurization system, which comprises a pipeline body, a large-head pipe flange is annularly arranged on the outer wall of one end of the pipeline body with a larger pipe diameter, and an FRP (Fiber Reinforced Plastic) lining matched with the pipe diameter is paved on the inner wall of the pipeline body. The outer wall of the end, away from the large-head pipe flange, of the pipeline body is connected with a connecting ring with the surface covered with threads, the pipeline body is connected with a small-head filter pipe through the connecting ring, and a sealing ring is annularly arranged at the joint of the connecting ring and the small-head filter pipe. The high-chromium-nickel-molybdenum alloy composite large-small-head pipeline for the desulfurization system is provided with the filter plate which is used for filtering and removing impurities from sulfur-containing or desulfurized gas conveyed in the desulfurization system, and through the structure, convenient to disassemble and assemble, of the small-head filter pipe, a worker can conveniently clean impurity particles and the like which are filtered and intercepted, the pipeline body is prevented from being blocked, and the service life of the pipeline is prolonged. And the durability of the pipeline body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reducer and reducer pipes, in particular to a high-chromium nickel-molybdenum alloy composite reducer and reducer pipe for a desulfurization system. Background Art

[0002] Reducers, also known as pipe reducers, are a type of chemical pipe fitting used to connect two pipes of different diameters. The appearance of the reducer and the reducer are generally different, depending on their position and function in the piping system. The connection methods of reducers include welding and threading, and are widely used in various industrial fields, including chemicals, petroleum, natural gas, pharmaceuticals, and food.

[0003] The reducer and reducer pipes used in conventional desulfurization systems are straight-through structures, which are directly connected to the desulfurization system through flanges for transporting substances. Since the gas transported in the desulfurization system usually contains more impurity particles, these impurity particles accumulate in the reducer and reducer pipes, which can easily cause pipe blockage and is not conducive to the long-term use of the reducer and reducer pipes. For this reason, we propose a high-chromium, nickel-molybdenum alloy composite reducer and reducer pipe for the desulfurization system. Utility Model Content

[0004] The utility model aims to provide a high-chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the utility model provides the following technical solution: a high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system, comprising:

[0006] A pipe body, wherein the outer wall of one end of the pipe body having a larger pipe diameter is provided with a large-head pipe flange, the inner wall of the pipe body is paved with an FRP lining of matching pipe diameter, the outer wall of the pipe body at one end away from the large-head pipe flange is connected with a connecting ring with a surface covered with threads, the pipe body is connected with a small-head filter tube via the connecting ring, a sealing ring is provided at the connection between the connecting ring and the small-head filter tube, a connecting internal thread is provided on the inner surface of the connection between the small-head filter tube and the connecting ring, a small-head pipe flange is fixed to the end of the small-head filter tube away from the connecting ring, and a filter plate is fixed to the inner surface of the middle part of the small-head filter tube.

[0007] Furthermore, filter holes are provided on both side outer walls of the filter plate, and filter meshes are laid on the surfaces of the filter holes.

[0008] Furthermore, the pipe body and the small-end filter tube are both made of high-chromium-nickel-molybdenum alloy, and the FRP lining matches the outer dimensions of the pipe body.

[0009] Furthermore, the small-end filter tube is threadedly connected to the pipeline body through the connecting internal thread and the connecting ring, and the small-end filter tube forms a sealing structure with the pipeline body through the connecting ring and the sealing ring, and the central axis position of the small-end filter tube coincides with that of the pipeline body.

[0010] Furthermore, the small-end filter tube is connected to the pipeline body through the filter plate, and the large-end tube flange and the small-end tube flange are parallel to each other.

[0011] Furthermore, the filter holes are evenly distributed at equal distances along the outer walls on both sides of the filter plate, and the filter screens are symmetrically arranged with respect to the central axis of the filter holes.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The desulfurization system uses a high-chromium, nickel-molybdenum alloy composite large and small head pipe equipped with a filter plate, which is used to filter and remove impurities from the sulfur-containing or desulfurized gas transported in the desulfurization system. The small head filter tube has a structure that is easy to disassemble and assemble, so that the staff can easily clean the impurity particles intercepted by the filter, prevent the pipeline body from being blocked, and improve the durability of the pipeline body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the main structure of the utility model in the combined state;

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the pipeline body of the utility model;

[0016] Figure 3 It is a partial cross-sectional enlarged structural schematic diagram of the filter tube of the utility model.

[0017] In the figure: 1. Pipe body; 2. Big head pipe flange; 3. FRP lining; 4. Connecting ring; 5. Small head filter tube; 6. Sealing ring; 7. Connecting internal thread; 8. Small head pipe flange; 9. Filter plate; 10. Filter hole; 11. Filter screen. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] The utility model provides a high chromium nickel-molybdenum alloy composite pipe with large and small heads for a desulfurization system through improvement. Figure 1-Figure 2, comprising: a pipeline body 1, a large-head pipe flange 2 is arranged around the outer wall of one end of the pipeline body 1 having a larger diameter, an FRP lining 3 with a matching pipe diameter is laid on the inner wall of the pipeline body 1, and the FRP lining 3 matches the outer dimensions of the pipeline body 1, the arranged FRP lining 3 has high corrosion resistance, and the integrated molding makes the FRP lining 3 compact in structure and occupies a small space, so that the FRP lining 3 reduces the influence of the pipe diameter of the pipeline body 1, so that the inner wall of the pipeline body 1 has good corrosion resistance and wear resistance; the outer wall of the pipeline body 1 away from the large-head pipe flange 2 is connected with a connecting ring 4 with a surface covered with threads, the pipeline body 1 is connected with a small-head filter tube 5 through the connecting ring 4, and the small-head filter tube 5 coincides with the central axis of the pipeline body 1, the materials of the pipeline body 1 and the small-head filter tube 5 are both made of high-chromium-nickel-molybdenum alloy, the pipeline body 1 and the small-head filter tube 5 made of high-chromium-nickel-molybdenum alloy have high wear resistance and corrosion resistance, so that the pipeline body 1 can operate stably in the working environment of sulfur-containing steam or other corrosive substances in the desulfurization system; A sealing ring 6 is provided at the connection between the connecting ring 4 and the small-head filter tube 5, and the small-head filter tube 5 forms a sealing structure with the pipeline body 1 through the connecting ring 4 and the sealing ring 6. A connecting internal thread 7 is provided on the inner surface of the connection between the small-head filter tube 5 and the connecting ring 4. The small-head filter tube 5 forms a threaded connection with the pipeline body 1 through the connecting internal thread 7 and the connecting ring 4. A small-head pipe flange 8 is fixed to the end of the small-head filter tube 5 away from the connecting ring 4, and the large-head pipe flange 2 and the small-head pipe flange 8 are flush with each other. The large-head pipe flange 2 and the small-head pipe flange 8 are used to install and connect the large and small-head pipes in the desulfurization system; a filter plate 9 with a porous structure is fixed on the inner surface of the middle part of the small-head filter tube 5, and the small-head filter tube 5 forms a communication connection with the pipeline body 1 through the filter plate 9. The filter plate 9 is used to filter and remove impurities from the sulfur-containing or desulfurized gas transported in the desulfurization system, and the structure of the small-head filter tube 5 is easy to disassemble and assemble, so that the staff can easily clean the impurity particles intercepted by the filtration, prevent the pipeline body 1 from being blocked, and improve the durability of the pipeline body 1.

[0020] See also Figure 1 and Figure 3 A high-chromium-nickel-molybdenum alloy composite large and small head pipe for a desulfurization system includes: filter holes 10 are opened on the outer walls of both sides of the filter plate 9, and the filter holes 10 are evenly distributed along the outer walls of both sides of the filter plate 9. Filter screens 11 are laid on the surfaces of the filter holes 10, and the filter screens 11 are symmetrically arranged about the central axis of the filter holes 10. The filter holes 10 and the filter screens 11 are used to enhance the filtering effect of the filter plate 9, filter and intercept impurity particles entrained during the discharge of gas or liquid in the desulfurization system, and facilitate the repeated use of the small head filter tube 5 after cleaning and filtration.

[0021] Working principle: For this type of desulfurization system using high chromium nickel-molybdenum alloy composite large and small head pipes, the staff first connects the small head filter tube 5 to the pipe body 1 of the large and small head pipe through the connecting internal thread 7 and the connecting ring 4. The connection between the small head filter tube 5 and the pipe body 1 is sealed by a sealing ring 6, which can effectively prevent the substances transmitted in the pipeline from leaking from the connection. Then, the large and small head pipes are connected and installed in the pipeline of the desulfurization system through the large head pipe flange 2 and the small head pipe flange 8. The pipe body 1 and the small head filter tube 5 installed subsequently are made of high chromium nickel-molybdenum alloy, which makes the outer wall of the pipe have a relatively good performance in the desulfurization system. The high wear and corrosion resistance, combined with the FRP lining 3 laid on the inner wall, prevents the inner wall of the pipeline from being corroded when transporting corrosive substances for a long time, and maintains good structural integrity. Finally, the impurity particles contained in the substances transported by the pipeline body 1 and the small-head filter tube 5 can be filtered and intercepted by the filter plate 9, and the filter plate 9 can effectively filter the impurities at both ends of the filter plate 9 through the filter holes 10 and the filter screen 11 to prevent the desulfurization system pipeline from being blocked. After using it for a period of time, the staff can easily disassemble and assemble the small-head filter tube 5 for cleaning and impurity removal operations, which is convenient for the recycling of the small-head filter tube 5.

[0022] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system, characterized in that: include: A pipe body (1), wherein a large-end pipe flange (2) is provided on the outer wall of one end of the pipe body (1) with a larger pipe diameter, an FRP lining (3) with a matching pipe diameter is laid on the inner wall of the pipe body (1), a connecting ring (4) with a surface covered with threads is connected to the outer wall of the end of the pipe body (1) away from the large-end pipe flange (2), the pipe body (1) is connected to a small-end filter tube (5) through the connecting ring (4), a sealing ring (6) is provided at the connection between the connecting ring (4) and the small-end filter tube (5), a connecting internal thread (7) is provided on the inner surface of the connection between the small-end filter tube (5) and the connecting ring (4), a small-end pipe flange (8) is fixed to the end of the small-end filter tube (5) away from the connecting ring (4), and a filter plate (9) is fixed to the inner surface of the middle part of the small-end filter tube (5).

2. The high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system according to claim 1, characterized in that: The outer walls of both sides of the filter plate (9) are provided with filter holes (10), and the surfaces of the filter holes (10) are paved with filter screens (11).

3. The high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system according to claim 1, characterized in that: The materials of the pipeline body (1) and the small-end filter tube (5) are both high-chromium-nickel-molybdenum alloy, and the outer dimensions of the FRP lining (3) match those of the pipeline body (1).

4. The high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system according to claim 1, characterized in that: The small-end filter tube (5) is threadedly connected to the pipeline body (1) by connecting the internal thread (7) and the connecting ring (4), and the small-end filter tube (5) forms a sealing structure with the pipeline body (1) by connecting the connecting ring (4) and the sealing ring (6), and the central axis of the small-end filter tube (5) coincides with that of the pipeline body (1).

5. The high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system according to claim 1, characterized in that: The small-end filter tube (5) is connected to the pipeline body (1) via a filter plate (9), and the large-end tube flange (2) and the small-end tube flange (8) are parallel to each other.

6. The high chromium nickel-molybdenum alloy composite reducer pipe for a desulfurization system according to claim 2, characterized in that: The filter holes (10) are evenly distributed at equal distances along the outer walls of both sides of the filter plate (9), and the filter screens (11) are symmetrically arranged about the central axis of the filter holes (10).

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