Quick switching blind channel short pipe

Abstract

The utility model discloses a quick switching's blind pass short pipe belongs to pipeline plugging technical field, including short pipe body, first duplex blind plate flange, second duplex blind plate flange, first flange and second flange, first duplex blind plate flange and second duplex blind plate flange fixed connection in the both ends of short pipe body respectively, constitute a rigid whole, the rigid whole rotatablely supported between first flange and second flange through first duplex blind plate flange and second duplex blind plate flange, first duplex blind plate flange and second duplex blind plate flange all have a blind plate portion and a through -hole portion, the through -hole portion of short pipe body's lumen is linked together with both ends, the utility model discloses have the advantage that the fresh -keeping effect of cabinet is improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing technology, specifically a quick-switching blind-through short pipe. Background Technology

[0002] In complex industrial pipeline systems (such as chemical plants, oil tankers, and pharmaceutical factories), it is often necessary to switch between different processes, isolate equipment for maintenance, or prevent different media from mixing when not in operation. In particular, in the cargo tank cleaning systems and inert gas systems of oil tankers and chemical tankers, reliable isolation and rapid connection of pipelines are key links to ensure operational safety and efficiency.

[0003] Typically, blind-connected pipelines require a blind-break function at the location where a pair of standard flanges are installed in series. Between these two standard flanges, a dedicated double blind flange is clamped. By rotating the double blind flange, its blind flange or through-hole portion can be aligned with the pipeline, thereby achieving the switch between blind-break and connected states.

[0004] However, the addition of an extra pair of flanges in the pipeline to hold the double blind flange results in a large number of standard parts such as flanges, bolts, and gaskets being used, requiring a large number of flanges, which not only increases the procurement cost but also increases the total weight of the pipeline system.

[0005] Based on this, the present invention designs a fast-switching blind-through short pipe to solve the above problems. Utility Model Content

[0006] To achieve the above objectives, this utility model provides the following technical solution: It includes a short pipe body, a first double blind flange, a second double blind flange, a first flange, and a second flange. The first double blind flange and the second double blind flange are respectively fixedly connected to both ends of the short pipe body, forming a rigid whole. The rigid whole is rotatably supported between the first and second flanges via the first and second double blind flanges. Each of the first and second double blind flanges has a blind flange portion and a through hole portion. The lumen of the short pipe body communicates with the through holes at both ends.

[0007] By adopting the above technical solution, the structure is integrated into the short pipe body. Compared with the traditional double flange clamp blind plate design, at least one flange and its matching bolts are saved, reducing material costs and total equipment weight. The traditionally loose components are integrated into a whole blind pipe component, avoiding the risk of small parts being lost on site, and facilitating warehousing, transportation and installation management.

[0008] Preferably, the first double blind flange and the second double blind flange are fixed to the short pipe body by welding.

[0009] By adopting the above technical solution, welding ensures the strength and sealing of the connection, avoiding the risk of loosening and leakage that may occur with threaded connections.

[0010] Preferably, a connecting hole is provided between the blind plate portion and the through hole portion, and a connecting column is rotatably disposed in the connecting hole, with the other end of the connecting column rotatably connected to the first flange and the second flange.

[0011] By adopting the above technical solution, the connecting column and connecting hole form a simple yet robust hinge mechanism, enabling the double blind flange to rotate smoothly and accurately, making the alignment operation more effortless.

[0012] Preferably, the end of the connecting column is provided with an anti-detachment block.

[0013] By adopting the above technical solution, it is ensured that the double blind flange will not accidentally fall off the short pipe body under vibration or operating environment, eliminating the hidden danger of component falling and improving the overall safety and reliability of the equipment.

[0014] Preferably, it also includes a positioning mechanism, which includes a first positioning hole disposed on the first flange and the second flange, and a second positioning hole disposed on the blind plate portion and the through hole portion respectively, and a fastening screw is inserted into the first positioning hole and the corresponding second positioning hole.

[0015] By adopting the above technical solution, after rotating to the correct position, the double blind flange can be firmly locked in the required working state by tightening the fastening screws. Tightening the screws can provide sufficient flange face clamping force, thereby ensuring the sealing between the blind flange or through hole and the pipe flange.

[0016] In summary, this application has the following beneficial technical effects: by integrating the structure onto the short pipe body, compared with the traditional double flange clamp blind plate design, at least one flange and its matching bolts are saved, reducing material costs and total equipment weight. It integrates multiple traditionally loose components into a whole blind-through short pipe component, avoiding the risk of small parts being lost on site, and facilitating warehousing, transportation and installation management. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this embodiment; Figure 2This is a schematic diagram of the blind break structure in this embodiment; Figure 3 for Figure 2 A magnified structural diagram of A in the diagram.

[0019] The attached diagram lists the components represented by each number as follows: 1. Short pipe body; 2. First double blind flange; 3. First flange; 4. Second double blind flange; 5. Second flange; 6. Fixing screw; 7. Second positioning hole; 8. Connecting column; 9. Connecting hole; 10. Anti-detachment block; 11. First positioning hole; 12. Blind flange section; 13. Through hole section. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0022] A quick-switching blind-through short pipe includes a short pipe body 1, a first double blind flange 2, a second double blind flange 4, a first flange 3, and a second flange 5. The short pipe body 1 is a section of tubular body. The first double blind flange 2 and the second double blind flange 4 are respectively welded to both ends of the short pipe body 1 to form a rigid whole. The rigid whole is rotatably supported between the first flange 3 and the second flange 5 by the first double blind flange 2 and the second double blind flange 4. The first double blind flange 2 and the second double blind flange 4 each have a blind plate portion 12 and a through hole portion 13. The lumen of the short pipe body 1 is connected to the through hole portions 13 at both ends.

[0023] In use, when it is necessary to open the pipeline, rotate the core component so that the through hole 13 of the first double blind flange 2 structure is aligned with the orifice of the first flange 3, and at the same time, the through hole 13 of the second double blind flange 4 structure is also aligned with the orifice of the second flange 5. At this time, fluid can pass through the entire short pipe body 1. When it is necessary to disconnect the pipeline, rotate the core component so that the blind flange 12 of the first double blind flange 2 structure is aligned with the orifice of the first flange 3, and at the same time, the blind flange 12 of the second double blind flange 4 structure is aligned with the orifice of the second flange 5. At this time, the pipeline can be simultaneously blindly disconnected at both ends. Weld the double blind flange to the pipeline to form a single pipeline. In this way, each blind-opening pipeline can save a flange, which not only reduces weight but also reduces installation time, thereby reducing labor costs.

[0024] A connecting hole 9 is provided between the blind flange part 12 and the through hole part 13. The connecting hole 9 is located at the geometric center of the first double blind flange 2. A connecting column 8 is rotatably provided in the connecting hole 9. The other end of the connecting column 8 is rotatably connected to the first flange 3 and the second flange 5. An anti-detachment block 10 is provided at the end of the connecting column 8. When switching the state of the short pipe body 1, the entire first double blind flange 2 and the second double blind flange 4 rotate along the connecting column 8, so that the double blind flange can be rotated smoothly and accurately to the target position.

[0025] The positioning mechanism includes a first positioning hole 11 provided on the first flange 3 and the second flange 5, and a second positioning hole 7 provided on the blind plate portion 12 and the through hole portion 13 respectively. The fastening screws are inserted into the first positioning hole 11 and the corresponding second positioning hole 7. When the operator rotates the rigid rotating component to the working position of conduction or blind disconnection, it can reliably lock it together with the fixed first flange 3 and the second flange 5 to prevent the rotating component from shifting due to vibration or accidental contact, thereby ensuring the stability of the pipeline status and the reliability of the seal.

[0026] The implementation principle of this embodiment is as follows: If the current pipeline is in a blind-break state, the operator first uses a tool to loosen and remove the fastening screws passing through the corresponding positioning holes of the blind flange portion 12 on the first flange 3 and the second flange 5. Then, the operator holds and rotates the rigid rotating assembly, rotating the assembly approximately 180 degrees. During this process, the entire assembly rotates smoothly on the flanges through the connecting posts 8 at both ends. When the rotation is in place, the operator can confirm by touch or observation of the hole alignment that the through holes 13 on the first double blind flange 2 and the second double blind flange 4 are aligned with the passage openings of the first flange 3 and the second flange 5, respectively. At the same time, the second positioning hole 7 on the through hole portion 13 is also automatically aligned with the corresponding first positioning hole 11 on the flange. The fastening screws are inserted into the aligned second positioning hole 7 and first positioning hole 11 and tightened clockwise with a tool. At this time, the rigid rotating assembly is firmly locked, the pipeline is in a conductive state, and fluid can pass smoothly.

[0027] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fast-switching blind-through short pipe, characterized in that: The system includes a short pipe body (1), a first double blind flange (2), a second double blind flange (4), a first flange (3), and a second flange (5). The first double blind flange (2) and the second double blind flange (4) are respectively fixedly connected to the two ends of the short pipe body (1) to form a rigid whole. The rigid whole is rotatably supported between the first flange (3) and the second flange (5) by the first double blind flange (2) and the second double blind flange (4). The first double blind flange (2) and the second double blind flange (4) each have a blind flange portion (12) and a through hole portion (13). The lumen of the short pipe body (1) is connected to the through hole portions (13) at both ends.

2. The fast-switching blind-through short pipe according to claim 1, characterized in that: The first double blind flange (2) and the second double blind flange (4) are fixed together with the short pipe body (1) by welding.

3. The fast-switching blind-through short pipe according to claim 2, characterized in that: A connecting hole (9) is provided between the blind plate part (12) and the through hole part (13). A connecting column (8) is rotatably provided in the connecting hole (9). The other end of the connecting column (8) is rotatably connected to the first flange (3) and the second flange (5).

4. A fast-switching blind-through short pipe according to claim 3, characterized in that: An anti-detachment block (10) is provided at the end of the connecting column (8).

5. A fast-switching blind-through short pipe according to claim 1, characterized in that: It also includes a positioning mechanism, which includes a first positioning hole (11) disposed on the first flange (3) and the second flange (5), and a second positioning hole (7) disposed on the blind plate portion (12) and the through hole portion (13) respectively, and is inserted into the first positioning hole (11) and the corresponding second positioning hole (7) by fastening screws.

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