A plug-tightening T-ring sealing device

Abstract

This invention provides a plug-tightening T-ring sealing device, relating to the technical field of plug sealing equipment. The plug-tightening T-ring sealing device includes a pipe box plate with a screw hole. A plug is screwed into the screw hole. It also includes a first protrusion and a T-ring. The first protrusion, protruding towards the screw hole, is located on the pipe box plate near the screw hole. The plug is inserted into the pipe box plate from the outside through the screw hole, and the T-ring is placed between the first protrusion and the plug. As the pressure inside the pipe box increases, the medium inside the pipe box transmits the pressure to the outer surface of the T-ring near the center of the screw hole, generating a radial pressure perpendicular to the axis of the screw hole. This compresses the T-ring, plug, and first protrusion, thereby increasing the sealing strength between the plug and the pipe box plate. The higher the pressure inside the pipe box, the greater the sealing strength, preventing leakage.

Description

Technical Field

[0001] This invention relates to the field of thread plug sealing equipment technology, and in particular to a thread plug compression type T-ring sealing device. Background Technology

[0002] In air coolers used in industries such as petroleum, chemical, metallurgy, and power, threaded plug sealing is crucial for the sealing of the tube box. Conventional threaded plug sealing involves connecting the plug through a threaded hole on the tube box plate, with a gasket fitting snugly against the plate for a seal.

[0003] However, because the plug is subjected to pressure perpendicular to its end face inside the container, it generates an axial outward force, which reduces the pressure exerted by the plug on the gasket. This reduces the tightness of the sealing surface, leading to a decrease in sealing ability and causing leakage.

[0004] Therefore, the aforementioned technical issues still need to be addressed. Summary of the Invention

[0005] The purpose of this invention is to provide a plug-tightening T-ring sealing device to improve the sealing strength between the plug and the pipe box plate, and the greater the pressure inside the pipe box, the greater the sealing strength, thus avoiding leakage.

[0006] To address the aforementioned technical problems, the embodiments of the present invention provide the following technical solutions:

[0007] The first aspect of this invention provides a plug-tightening T-ring sealing device, comprising a pipe box plate, wherein a screw hole is provided on the pipe box plate, and a plug is screwed into the screw hole, and further comprising:

[0008] The first protrusion is provided on the tube box plate near the screw hole and protrudes toward the screw hole side;

[0009] A T-shaped ring is disposed between the first protrusion and the plug, and is simultaneously connected to the first protrusion, the tube box plate, and the plug;

[0010] The T-ring also covers the edge of the first protrusion near the center side of the screw hole.

[0011] Furthermore, the first protrusion includes:

[0012] The first protrusion is connected to the tube box plate;

[0013] The first sealing surface is located on the first protrusion near the center side of the screw hole;

[0014] The second sealing surface is located on the first protrusion near the plug side.

[0015] Furthermore, a second protrusion is provided on the outer periphery of the end of the plug near the second sealing surface side, and the second protrusion protrudes toward the second sealing surface side.

[0016] Furthermore, the second protrusion includes:

[0017] Second protrusion;

[0018] The third sealing surface is located on the second protrusion near the side of the second sealing surface and is connected to the T-ring;

[0019] The fourth sealing surface is located on the second protrusion near the center side of the screw hole and is connected to the T-ring;

[0020] The T-ring also covers the fourth sealing surface.

[0021] Furthermore, a compression cap is provided between the T-ring, the tube box plate, and the plug.

[0022] Furthermore, the clamping cap includes:

[0023] The first clamping part is connected to the end of the plug near the second sealing surface;

[0024] The second clamping part is located at the end of the first clamping part and is connected to the first clamping part, and is also connected to the T-ring and the tube box plate.

[0025] Furthermore, the second clamping part includes:

[0026] Clamping parts;

[0027] The first pressing surface is located on the pressing member near the side of the second sealing surface;

[0028] The second clamping surface is located on the clamping member on the side closest to the center of the screw hole.

[0029] Furthermore, the T-ring includes:

[0030] The first ring is simultaneously connected to the second sealing surface, the tube box plate, and the first pressing surface;

[0031] The second ring is perpendicular to the first ring and is connected to both the first sealing surface and the second pressing surface.

[0032] Further, the first ring component includes:

[0033] First ring section;

[0034] The first annular surface is disposed on the first annular portion located on the side of the second sealing surface and is connected to the second sealing surface;

[0035] The second annular surface is disposed on the first annular portion located on the side of the pipe box plate and is connected to the pipe box plate;

[0036] The third annular surface is disposed on the first annular portion located on the side of the first pressing surface and is connected to the first pressing surface.

[0037] Furthermore, the second ring component includes:

[0038] The second ring is perpendicularly connected to the first ring.

[0039] The fourth annular surface is disposed on the second annular portion located on the side of the second pressing surface and is connected to the second pressing surface;

[0040] The fifth annular surface is disposed on the second annular portion located near the plug side;

[0041] The sixth annular surface is disposed on the second annular portion located near the center side of the screw hole and is parallel to the second annular surface;

[0042] The seventh annular surface is disposed on the second annular portion located away from the plug side;

[0043] The eighth annular surface is disposed on the second annular portion located near the first sealing surface and is connected to the first sealing surface.

[0044] Compared to existing technologies, the plug-tightening T-ring sealing device provided in the first aspect of this invention features a first protrusion on a pipe box plate near the screw hole, protruding towards the screw hole. The plug is inserted into the pipe box plate from the outside through the screw hole, and a T-ring is placed between the first protrusion and the plug. As the pressure inside the pipe box increases, the medium inside the pipe box transmits the pressure to the outer surface of the T-ring near the center of the screw hole, generating a radial pressure perpendicular to the axial direction of the screw hole. This compresses the T-ring, plug, and first protrusion, thereby increasing the sealing strength between the plug and the pipe box plate. Furthermore, the greater the pressure inside the pipe box, the greater the sealing strength, preventing leakage. Attached Figure Description

[0045] The above and other objects, features, and advantages of exemplary embodiments of the present invention will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of the invention are illustrated by way of example and not limitation, with the same or corresponding reference numerals denoteing the same or corresponding parts, wherein:

[0046] Figure 1A schematic cross-sectional view of a plug-type T-ring sealing device is shown.

[0047] Figure 2 A schematic cross-sectional view of the first protrusion is shown;

[0048] Figure 3 A schematic cross-sectional view of the second protrusion is shown.

[0049] Figure 4 A schematic cross-sectional view of the T-ring is shown.

[0050] Figure 5 A schematic cross-sectional view of another type of screw plug compression T-ring sealing device is shown;

[0051] Figure 6 A schematic cross-sectional view of the compression cap is shown;

[0052] Explanation of icon numbers:

[0053] 1. Pipe box plate;

[0054] 2. Screw hole;

[0055] 3. Plug; 31. Second protrusion; 311. Second protrusion; 312. Third sealing surface; 313. Fourth sealing surface;

[0056] 4. First protrusion; 41. First protrusion; 411. First sealing surface; 412. Second sealing surface;

[0057] 5. T-shaped ring; 51. First ring portion; 511. First ring surface; 512. Second ring surface; 513. Third ring surface; 52. Second ring portion; 521. Fourth ring surface; 522. Fifth ring surface; 523. Sixth ring surface; 524. Seventh ring surface; 525. Eighth ring surface;

[0058] 6. Pressing cover; 61. First pressing part; 62. Second pressing part; 621. First pressing surface; 622. Second pressing surface. Detailed Implementation

[0059] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Unless otherwise specified, the techniques used in the embodiments are conventional means well known to those skilled in the art.

[0060] It should be noted that, unless otherwise stated, the technical or scientific terms used in this invention should be understood in their ordinary sense by those skilled in the art. In this document, relational terms such as “first” and “second” are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms “connected,” “linked,” etc., should be interpreted broadly, for example, referring to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium. The terms “comprising,” “including,” or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase “comprising…” does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0061] This invention provides a sealing device for a plug 3-type compression T-ring 5, such as... Figure 1 As shown, the plug-type T-ring 5 sealing device includes a pipe box plate 1, a screw hole 2 on the pipe box plate 1, a plug 3 screwed into the screw hole 2, a first protrusion 4, and a T-ring 5. The first protrusion 4 is located on the pipe box plate 1 near the screw hole 2 and protrudes towards the screw hole 2. The T-ring 5 is located between the first protrusion 4 and the plug 3, and is connected to both the first protrusion 4, the pipe box plate 1, and the plug 3. The T-ring 5 also covers the edge of the first protrusion 4 near the center of the screw hole 2.

[0062] In this embodiment, a first protrusion 4 protruding towards the screw hole 2 is provided on the pipe box plate 1 near the screw hole 2. The plug 3 is inserted into the pipe box plate 1 from the outside through the screw hole 2. A T-ring 5 is placed between the first protrusion 4 and the plug 3. As the pressure inside the pipe box increases, the medium inside the pipe box transmits the pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axis of the screw hole 2. This causes the T-ring 5 to be pressed tightly against the plug 3 and the first protrusion 4, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box. Furthermore, the greater the pressure inside the pipe box, the greater the sealing strength, preventing leakage.

[0063] In a specific embodiment, such as Figure 2As shown, the first protrusion 4 includes a first protrusion 41, a first sealing surface 411, and a second sealing surface 412. The first protrusion 41 is connected to the pipe box plate 1. The first sealing surface 411 is located on the first protrusion 41 near the center side of the screw hole 2. The second sealing surface 412 is located on the first protrusion 41 near the plug 3.

[0064] In this embodiment, the first sealing surface 411 and the second sealing surface 412 on the first protrusion 41 are simultaneously connected to the T-ring 5. As the pressure inside the pipe box increases, the medium inside the pipe box transmits the pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axial direction of the screw hole 2. This causes the T-ring 5 to be pressed and compacted with the first sealing surface 411 and the second sealing surface 412, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0065] For example, the included angle between the first sealing surface 411 and the second sealing surface 412 is 210° to 270°.

[0066] For example, depending on the application, the first sealing surface 411 may be perpendicular to the second sealing surface 412.

[0067] Furthermore, the first sealing surface 411 forms a process hole for the flow of medium within the supply box, thereby allowing the medium to transmit pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axial direction of the screw hole 2.

[0068] In a specific embodiment, such as Figure 3 As shown, a second protrusion 31 is provided on the outer periphery of the end of the plug 3 near the second sealing surface 412, and the second protrusion 31 protrudes toward the second sealing surface 412.

[0069] In this embodiment, the second protrusion 31 protruding towards the second sealing surface 412 facilitates connection with the T-ring 5. As the pressure inside the pipe box increases, the medium inside the pipe box transmits the pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axial direction of the screw hole 2. This compresses and compacts the T-ring 5 with the second protrusion 31, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0070] In a specific embodiment, such as Figure 3As shown, the second protrusion 31 includes a second protrusion 311, a third sealing surface 312, and a fourth sealing surface 313. The third sealing surface 312 is located on the second protrusion 311 near the side of the second sealing surface 312 and is connected to the T-ring 5. The fourth sealing surface 313 is located on the second protrusion 311 near the center side of the screw hole 2 and is connected to the T-ring 5. The T-ring 5 also covers the fourth sealing surface 313.

[0071] In this embodiment, the third sealing surface 312 and the fourth sealing surface 313 on the second protrusion 311 are simultaneously connected to the T-ring 5, and the T-ring 5 also covers the edge of the fourth sealing surface 313. As the pressure inside the pipe box increases, the medium inside the pipe box transmits the pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axial direction of the screw hole 2. This ensures that the T-ring 5 is pressed and compacted against both the third sealing surface 312 and the fourth sealing surface 313, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0072] Furthermore, the third sealing surface 312 is connected to the third annular surface 513 on the T-ring 5, and the fourth sealing surface 313 is connected to the fourth annular surface 521 on the T-ring 5, so that the third sealing surface 312 and the third annular surface 513 are both pressed and compacted, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0073] For example, the included angle between the third annular surface 513 and the fourth annular surface 521 is 90°, and the included angle between the first pressing surface 621 and the second pressing surface 622 is also 90°.

[0074] For example, depending on the application, the included angle between the third annular surface 513 and the fourth annular surface 521 may be 1° to 30°, and the included angle between the first pressing surface 621 and the second pressing surface 622 may also be 1° to 30°, and the included angle between the first pressing surface 621 and the second pressing surface 622 may be the same as the included angle between the third annular surface 513 and the fourth annular surface 521.

[0075] In a specific embodiment, such as Figure 5 As shown, a clamping cap 6 is also provided between the T-ring 5, the pipe box plate 1, and the plug 3.

[0076] In this embodiment, when the plug 3 does not have the second protrusion 31, a clamping cap 6 is provided between the T-ring 5, the pipe box plate 1, and the plug 3. On one hand, the clamping cap 6 connects with the T-ring 5, improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box. On the other hand, to achieve a sealing effect between the plug 3 and the pipe box plate 1, the plugs 3 in the prior art are all made of expensive rare metals, while the clamping cap 6 occupies part of the area of ​​the plug 3 within the target-sized screw hole 2, thereby reducing the volume of the plug 3. This significantly reduces the production and usage costs of the plug 3 while improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0077] In a specific embodiment, such as Figure 6 As shown, the clamping cover 6 includes a first clamping part 61 and a second clamping part 62. The first clamping part 61 is connected to the end of the plug 3 near the second sealing surface 412. The second clamping part 62 is located at the end of the first clamping part 61 and is connected to the first clamping part 61, and is also connected to the T-ring 5 and the pipe box plate 1.

[0078] In this embodiment, the first clamping part 61 is connected to the plug 3, and the second clamping part 62 is connected to the pipe box plate 1, thus isolating the plug 3 from the inside of the pipe box between the first clamping part 61 and the second clamping part 62. The T-ring 5 is directly connected to the second clamping part 62, the pipe box plate 1, and the first sealing surface 411. The medium inside the pipe box transmits pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axial direction of the screw hole 2. This ensures that the T-ring 5 is tightly clamped and compacted with the second clamping part 62, the pipe box plate 1, and the first sealing surface 411, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0079] In a specific embodiment, such as Figure 6 As shown, the second clamping part 62 includes a clamping member, a first clamping surface 621, and a second clamping surface 622. The first clamping surface 621 is located on the clamping member near the side of the second sealing surface 412. The second clamping surface 622 is located on the clamping member near the center side of the screw hole 2.

[0080] In this embodiment, the first pressing surface 621 and the second pressing surface 622 are simultaneously connected to the T-ring 5. The medium inside the box transmits pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, generating a radial pressure perpendicular to the axial direction of the screw hole 2. This ensures that the T-ring 5 is pressed and compacted with both the first pressing surface 621 and the second pressing surface 622, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0081] In a specific embodiment, such as Figure 4As shown, the T-ring 5 includes a first ring and a second ring. The first ring is connected to the second sealing surface 412, the pipe box plate 1, and the first pressing surface 621. The second ring is perpendicular to the first ring and is connected to both the first sealing surface 411 and the second pressing surface 622.

[0082] In this embodiment, the first ring and the second ring are connected, and the first ring is simultaneously connected to the second sealing surface 412, the pipe box plate 1, and the first pressing surface 621. The second ring is simultaneously connected to the first sealing surface 411 and the second pressing surface 622. Therefore, when the medium in the pipe box transmits pressure to the outer surface of the T-ring 5 near the center side of the screw hole 2, a radial pressure perpendicular to the axial direction of the screw hole 2 is generated, so that the first ring is pressed and compacted between the first pressing surface 621, the pipe box plate 1, and the second sealing surface 412, and between the second ring and the second pressing surface 622 and the first sealing surface 411, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0083] In a specific embodiment, such as Figure 4 As shown, the first ring component includes a first ring portion 51, a first ring surface 511, a second ring surface 512, and a third ring surface 513. The first ring surface 511 is disposed on the first ring portion 51 located on the side of the second sealing surface 412 and is connected to the second sealing surface 412. The second ring surface 512 is disposed on the first ring portion 51 located on the side of the pipe box plate 1 and is connected to the pipe box plate 1. The third ring surface 513 is disposed on the first ring portion 51 located on the side of the first pressing surface 621 and is connected to the first pressing surface 621.

[0084] In this embodiment, the first annular surface 511 is connected to the second sealing surface 412, the second annular surface 512 is connected to the pipe box plate 1, and the third annular surface 513 is connected to the first pressing surface 621, so that the first annular part, the second pressing part 62, the pipe box plate 1, and the first protrusion 4 are all pressed and compacted, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0085] In a specific embodiment, such as Figure 4As shown, the second ring component includes a second ring portion 52, a fourth ring surface 521, a fifth ring surface 522, a sixth ring surface 523, a seventh ring surface 524, and an eighth ring surface 525. The second ring portion 52 is perpendicularly connected to the first ring portion 51. The fourth ring surface 521 is disposed on the second ring portion 52 located on the side of the second pressing surface 622 and is connected to the second pressing surface 622. The fifth ring surface 522 is disposed on the second ring portion 52 located near the plug 3. The sixth ring surface 523 is disposed on the second ring portion 52 located near the center of the screw hole 2 and is parallel to the second ring surface 512. The seventh ring surface 524 is disposed on the second ring portion 52 located away from the plug 3. The eighth ring surface 525 is disposed on the second ring portion 52 located near the first sealing surface 411 and is connected to the first sealing surface 411.

[0086] In this embodiment, the fourth annular surface 521 is connected to the second pressing surface 622, the eighth annular surface 525 is connected to the first sealing surface 411, and the sixth annular surface 523 is in direct contact with the medium inside the pipe box, so that the second ring is pressed and compacted with the second pressing part 62 and the first protrusion 4, thereby improving the sealing strength between the plug 3 and the pipe box plate 1 on the pipe box.

[0087] In this invention, a preliminary seal is achieved by inserting a plug into the pipe box plate through a screw hole. A secondary seal is achieved when the first annular surface is connected to the second sealing surface, the second annular surface is connected to the pipe box plate, the third annular surface is connected to the first pressing surface, the fourth annular surface is connected to the second pressing surface, and the eighth annular surface is connected to the first sealing surface.

[0088] In this invention, to further improve sealing performance, reduce the machining accuracy requirements of each sealing surface, each ring surface, and each pressing surface, and to avoid seizing, the surface of the T-ring is sequentially coated with a silver coating and a MoS2 coating. Furthermore, this isolates the medium from the threads on the plug and the threads on the pipe box plate, preventing leakage caused by corrosion of the plug and the threads on the pipe box plate, while also preventing the plug from becoming difficult to disassemble due to rust.

[0089] This invention avoids the direct application of internal pressure from the pressure vessel to the plug end face and gasket, thus reducing the pressure between the plug and gasket. Furthermore, it addresses the problem of fatigue and loosening caused by cyclic stress resulting from pressure and temperature changes within the pressure vessel, leading to leakage in existing plug-gasket sealing structures. Therefore, the technical solution of this invention is completely different from the prior art where the sealing pressure originates from the threaded tightening force of the plug.

[0090] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A plug-tightening T-ring sealing device, comprising a pipe box plate, wherein the pipe box plate is provided with a screw hole, and a plug is spirally connected in the screw hole, characterized in that, Also includes: The first protrusion is provided on the tube box plate near the screw hole and protrudes toward the screw hole side; A T-shaped ring is disposed between the first protrusion and the plug, and is simultaneously connected to the first protrusion, the tube box plate, and the plug; wherein, the T-shaped ring also covers the edge of the first protrusion near the center side of the screw hole; the surface of the T-shaped ring is sequentially coated with a silver coating and a MoS2 coating. The first protrusion includes: The first protrusion is connected to the tube box plate; The first sealing surface is located on the first protrusion near the center side of the screw hole; The second sealing surface is located on the first protrusion near the plug side; A clamping cap is also provided between the T-ring, the tube box plate, and the plug; The clamping cap includes: The first clamping part is connected to the end of the plug near the second sealing surface; The second clamping part is located at the end of the first clamping part and is connected to the first clamping part, and is also connected to the T-ring and the tube box plate; The second clamping part includes: Clamping parts; The first pressing surface is located on the pressing member near the side of the second sealing surface; The second clamping surface is located on the clamping member on the side closest to the center of the screw hole.

2. The plug-type T-ring sealing device according to claim 1, characterized in that, The T-ring includes: The first ring is simultaneously connected to the second sealing surface, the tube box plate, and the first pressing surface; The second ring is perpendicular to the first ring and is connected to both the first sealing surface and the second pressing surface.

3. The plug-type T-ring sealing device according to claim 2, characterized in that, The first ring component includes: First ring section; The first annular surface is disposed on the first annular portion located on the side of the second sealing surface and is connected to the second sealing surface; The second annular surface is disposed on the first annular portion located on the side of the pipe box plate and is connected to the pipe box plate; The third annular surface is disposed on the first annular portion located on the side of the first pressing surface and is connected to the first pressing surface.

4. The plug-type T-ring sealing device according to claim 3, characterized in that, The second ring component includes: The second ring is perpendicularly connected to the first ring. The fourth annular surface is disposed on the second annular portion located on the side of the second pressing surface and is connected to the second pressing surface; The fifth annular surface is disposed on the second annular portion located near the plug side; The sixth annular surface is disposed on the second annular portion located near the center side of the screw hole and is parallel to the second annular surface; The seventh annular surface is disposed on the second annular portion located away from the plug side; The eighth annular surface is disposed on the second annular portion located near the first sealing surface and is connected to the first sealing surface.

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