Protective shell for flange piece

Abstract

The utility model provides a protective shell for a flange piece, which comprises an upper protective main body, side lugs are respectively arranged at two ends of the upper protective main body and two ends of a lower protective main body, and four fasteners sequentially penetrate through the side lugs to be matched with nuts to connect the upper protective main body and the lower protective main body together. Inner sealing liners are slidably mounted in the upper protective main body and the lower protective main body, catching grooves are formed in the outer surfaces of the inner sealing liners, and a sealing cover is mounted at the observation window of the upper protective main body; the inner sealing lining can rotate around the axis of the flange by 90 degrees in an arc mode, the sealing position can be dynamically adjusted, and the sealing device is adaptive to complex environments; the butt joint of the upper and lower protection bodies is perpendicular to the contact end face of the inner sealing liner, and the sealing performance is enhanced. The observation window and the drainage through hole meet the monitoring and drainage requirements, and the applicability is improved.

Description

Technical Field

[0001] This utility model belongs to the field of flange protection technology, and in particular relates to a protective shell for flange components. Background Technology

[0002] In industrial piping systems, flange connections, as crucial interfaces for piping components, are frequently exposed to complex environments such as corrosion, dust, and moisture, leading to sealing failures or structural damage. Therefore, protective enclosures are necessary to protect the flanges. Existing flange protective enclosures generally suffer from the following technical problems: First, most enclosures employ fixed sealing structures, making it difficult to adapt to the sealing requirements of flanges at different installation angles. Especially when adjusting the sealing position, the entire enclosure often needs to be disassembled, which is cumbersome and inefficient. Second, the design of the joint between the sealing components and the main structure of traditional enclosures is often unreasonable, easily creating sealing blind spots that allow external contaminants to seep in or internal media to leak. Third, existing protective enclosures lack visual monitoring structures and drainage functions, making it impossible to observe the flange status in real time, and water accumulation inside the enclosure can exacerbate flange corrosion.

[0003] Therefore, it is essential to invent a protective shell for flange components. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a protective shell for flange components, including an upper protective body, a lower protective body, side ears, fasteners, an inner sealing liner, a snap groove, an observation window, and a sealing cover. The upper and lower protective bodies are respectively provided with side ears at both ends. Four fasteners pass through the side ears in sequence and are connected together by nuts. The inner sealing liner is slidably installed inside both the upper and lower protective bodies. The outer surface of the inner sealing liner is provided with a snap groove. A sealing cover is installed at the observation window of the upper protective body.

[0005] Preferably, an observation window is provided through the top of the upper protective body, and a sealing cover is fixed to the observation window by screws. The sealing cover is an arc-shaped structure made of transparent material.

[0006] Preferably, the inner sealing liner that is slidably installed inside the upper and lower protective bodies is a semi-circular inner liner structure made of transparent material, and the end faces of the two inner sealing liners are in close contact.

[0007] Preferably, the inner sealing liner is capable of rotating in a 90-degree arc around the flange axis within the accommodating space formed by the upper and lower protective bodies, and the butt joint of the upper and lower protective bodies is perpendicular to the contact end faces of the two inner sealing liners.

[0008] Preferably, a plurality of drainage holes are provided through the lower protective body directly below it, and the drainage holes are located at the contact end faces of the two inner sealing linings.

[0009] Preferably, each inner sealing liner has a plurality of buckle grooves evenly spaced on its outer surface, and one side of each buckle groove is marked with a direction indicator.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] This utility model features an inner sealing liner with a semi-circular structure capable of rotating 90 degrees around the flange axis. This allows for dynamic adjustment of the sealing position based on the flange installation angle, enabling angle adaptation of the sealing liner without disassembling the protective body. This solves the problem of traditional fixed sealing structures being unable to adapt to complex installation environments. Furthermore, the upper and lower protective bodies are connected by side lugs and fasteners, which, combined with the arc-shaped movement trajectory of the inner sealing liner, allows for rapid opening and closing of the protective shell, significantly improving installation and maintenance efficiency.

[0012] The butt joint of the upper and lower protective bodies of this invention is perpendicular to the contact surface of the inner sealing liner, forming an orthogonal sealing structure. This effectively avoids the sealing dead angles that are easily generated by traditional parallel joints, enhancing the overall sealing performance of the protective shell. The inner sealing liner is made of transparent material with tight end-face contact, maintaining a continuous seal during rotation. This effectively isolates external corrosive media and prevents media leakage at the flange connection.

[0013] The observation window of the upper protective body of this utility model is equipped with an arc-shaped closed cover made of transparent material, allowing for direct inspection of the flange sealing surface condition and the presence of leaks without disassembling the protective shell, thus meeting the real-time monitoring needs of industrial sites. The drainage hole at the bottom of the lower protective body is located on the contact end face under the inner sealing liner, which can promptly drain water accumulated inside the upper and lower protective bodies, avoiding flange corrosion caused by liquid retention and improving the applicability of the protective shell in humid or water-prone environments. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the cross-sectional structure of the present invention when they are installed together.

[0016] Figure 3 This is a schematic diagram of the structure of the present invention without the sealing cover installed.

[0017] In the picture:

[0018] Upper protective body 1, lower protective body 2, side ears 3, fasteners 4, inner sealing liner 5, buckle groove 6, observation window 7, sealing cover 8. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for 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 the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0021] As attached Figure 1 To be continued Figure 3 As shown:

[0022] This utility model provides a protective shell for flange components, comprising an upper protective body 1, a lower protective body 2, side ears 3, fasteners 4, an inner sealing liner 5, a snap groove 6, an observation window 7, and a sealing cover 8. The upper protective body 1 and the lower protective body 2 are respectively provided with side ears 3 at both ends. Four fasteners 4 pass through the side ears 3 in sequence and are connected together with nuts. The inner sealing liner 5 is slidably installed inside the upper protective body 1 and the lower protective body 2. The outer surface of the inner sealing liner 5 is provided with a snap groove 6. The sealing cover 8 is installed at the observation window 7 of the upper protective body 1.

[0023] Furthermore, a rectangular observation window 7 is provided through the center of the upper protective body 1, the size of which is adapted to the visualization requirements of the flange connection area. The edge of the observation window 7 is provided with an inwardly turned annular mounting flange, which is fixedly connected to the arc-shaped sealing cover 8 by countersunk screws. The sealing cover 8 is made of transparent polycarbonate (PC) material, and its curvature matches the outer contour curvature of the upper protective body 1, allowing it to fit tightly against the observation window 7 and form a smooth transition surface. An annular silicone sealing ring is provided between the sealing cover 8 and the upper protective body 1. The sealing ring is embedded in the groove of the mounting flange and is tightened with screws to achieve a dustproof and waterproof seal, ensuring that operators can clearly observe the condition of the flange sealing surface through the sealing cover 8 while preventing external impurities from entering the protective shell.

[0024] Furthermore, both the upper protective body 1 and the lower protective body 2 are equipped with arc-shaped sliding guide rails on their inner walls. These guide rails extend circumferentially around the flange and are concentric with the flange axis. Both inner sealing liners 5 are semi-circular structures with radii matching the flange's outer diameter, injection molded from transparent polypropylene (PP) material. Their outer surface sliding ridges engage with the guide rails, allowing the inner sealing liners 5 to slide freely within the protective body circumferentially. When the two inner sealing liners 5 are joined, their end faces fit tightly together to form a sealing surface, ensuring a complete circumferential seal around the flange. The transparent inner sealing liners 5 allow for observation of the flange bolts and gaskets, and also possess acid and alkali corrosion resistance.

[0025] Furthermore, the sliding ridge of the inner sealing liner 5 and its cooperation with the guide rail define its movement trajectory. The inner sealing liner 5 can rotate in an arc within a 90° range around the flange axis, with the rotation center coinciding with the geometric center of the flange. The butt joint between the upper protective body 1 and the lower protective body 2 is perpendicular to the contact end faces of the two inner sealing liners 5. That is, the butt joint is set along the flange axial direction, while the contact end faces are set along the flange radial direction, forming an orthogonal sealing structure and avoiding sealing blind spots.

[0026] Furthermore, the lower protective body 2 has evenly distributed drainage holes in the central area at its bottom. These holes are positioned directly opposite the lower contact surfaces of the two inner sealing liners 5 and are below the lowest edge of the inner sealing liners 5, forming a natural drainage slope. When water accumulates inside the protective shell due to condensation or external seepage, the liquid can converge through the gap between the inner sealing liners 5 and the protective shell to the drainage holes below, and then be discharged to the outside, preventing corrosion of the flange bottom bolts and sealing surfaces by the accumulated water.

[0027] Furthermore, rectangular grooves 6 are equidistantly arranged on the outer surface of each inner sealing liner 5 along the circumference. One side of the groove 6 is laser-etched with a directional mark, which is an arrow pattern and marked with angle scales such as 0°, 45°, and 90°. The arrow points to the rotation direction of the inner sealing liner 5, which makes it easy for operators to quickly adjust the position of the inner sealing liner 5 by observing the mark, so as to ensure that its contact end face is perpendicular to the butt joint.

[0028] The working principle is as follows: First, the protective shell is assembled into a complete shell surrounding the flange by the side lugs 3 and fasteners 4, forming a basic protective space.

[0029] Next, remove the screws securing the arc-shaped sealing cover 8. The operator's fingers pass through the observation window 7 and engage the locking groove 6 of the inner sealing liner 5 inside the upper protective body 1. This causes the inner sealing liner 5 to rotate in an arc around the flange axis, which in turn causes the inner sealing liner 5 inside the lower protective body 2 to rotate in an arc as well. The operator can determine the specific rotation position of the inner sealing liner 5 based on the direction markings. The rotation continues until it reaches a 90° arc along the flange axis. At this point, the joint between the upper and lower protective bodies and the contact surface of the inner sealing liner remain perpendicular, forming an orthogonal sealing structure and eliminating the sealing blind spot at the joint. Then, the sealing cover 8 is reinstalled, and the observation window 7 is closed.

[0030] Meanwhile, the observation window 7 of the upper protective body 1 enables visual monitoring through the transparent sealing cover 8. Operators can observe the flange sealing surface and bolt status through the sealing cover 8 without disassembling the protective shell. The silicone sealing ring ensures the sealing of the monitoring area.

[0031] In addition, when water accumulates inside the upper and lower protective bodies, the liquid flows along the gap between the inner sealing liner 5 and the protective shell to the drain hole at the bottom of the lower protective body 2, and is discharged using the natural drainage slope to prevent water accumulation from corroding the flange components.

[0032] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A protective housing for flange components, characterized in that, The device includes an upper protective body (1), a lower protective body (2), side ears (3), fasteners (4), an inner sealing liner (5), a groove (6), an observation window (7), and a sealing cover (8). The upper protective body (1) and the lower protective body (2) are respectively provided with side ears (3) at both ends. The four fasteners (4) pass through the side ears (3) in sequence and are connected together with nuts. The upper protective body (1) and the lower protective body (2) are slidably installed with inner sealing liners (5) inside both the upper protective body (1) and the lower protective body (2). The outer surface of the inner sealing liner (5) is provided with a groove (6). The sealing cover (8) is installed at the observation window (7) of the upper protective body (1).

2. A protective housing for flange components as described in claim 1, characterized in that: An observation window (7) is provided directly above the upper protective body (1). The observation window (7) is fixed with a sealing cover (8) by screws. The sealing cover (8) is an arc-shaped structure made of transparent material.

3. A protective housing for flange components as described in claim 2, characterized in that: The inner sealing liner (5) that is slidably installed inside the upper protective body (1) and the lower protective body (2) is a semi-circular inner liner structure made of transparent material, and the end faces of the two inner sealing liners (5) are in close contact.

4. A protective housing for flanges as described in claim 3, characterized in that: The inner sealing liner (5) can rotate in a 90-degree arc around the flange axis within the accommodating space formed by the upper protective body (1) and the lower protective body (2), and the butt joint of the upper protective body (1) and the lower protective body (2) is perpendicular to the contact end face of the two inner sealing liners (5).

5. A protective housing for flanges as described in claim 4, characterized in that: Several drainage holes are provided directly below the lower protective body (2), and the drainage holes are located at the contact end faces of the two inner sealing liners (5).

6. A protective housing for a flange as described in claim 5, characterized in that: Each inner sealing liner (5) has several grooves (6) evenly spaced on its outer surface, and each groove (6) has a directional marking on one side.

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