Optical fiber airtight flange and sealing assembly for optical fiber airtight flange

Abstract

The application provides a kind of optical fiber airtight flange and sealing assembly for optical fiber airtight flange, wherein the optical fiber airtight flange includes flange body and sealing assembly.The connector body has a through hole for the optical fiber lens assembly to pass through, and the through hole is a first tapered opening at both ends near the connector body.The annular wedge is embedded in the first tapered opening, and the annular wedge has a first tapered surface corresponding to the first tapered opening and a second tapered opening.The sealing ring is embedded in the second tapered opening and is movable relative to the annular wedge, and the sealing ring has a second tapered surface corresponding to the second tapered opening.The protective cover is sleeved to the outer circumferential surface of the connector body, and the sealing ring and the annular wedge are fixed in the space enclosed by the connector, and the outer wall of the protective cover abuts to the hole wall of the mounting hole.When the optical fiber lens assembly passes through the through hole, the inner wall of the sealing ring tightly abuts to the outer wall of the optical fiber lens assembly.The optical fiber airtight flange provided by the application has a simple structure, is easy to assemble, and can be bidirectionally sealed.

Description

Technical Field

[0001] This invention relates to the field of airtight devices, and more particularly to an optical fiber airtight flange and a sealing assembly for the optical fiber airtight flange. Background Technology

[0002] GIS (Gas Insulated Switchgear), also known as sulfur hexafluoride enclosed switchgear, is an electrical device used in high-voltage power systems. It uses sulfur hexafluoride (SF6) gas as the insulating and arc-extinguishing medium. A GIS integrates all equipment in a substation except for transformers, including circuit breakers, disconnectors, grounding switches, voltage transformers, current transformers, surge arresters, busbars, cable terminals, and bushings, into a unified whole through optimized design. The equipment is directly or indirectly sealed within cavities formed by metal pipes and bushings, making any switches, lines, and terminals invisible from the outside.

[0003] Fiber optic lens assemblies are used to monitor equipment within the airtight GIS (Gas Separately Containerized System) cavities. During GIS operation, leaks of SF6 gas due to sealing issues can cause internal discharges and substation power outages, resulting in significant economic losses for both the substation and the company. Therefore, when using fiber optic lens assemblies to monitor the interior of GIS gas tanks, leak prevention is crucial. Fiber optic lens assemblies are typically installed using fiber optic airtight flanges.

[0004] In the process of realizing this invention, the inventors discovered at least the following problems in the prior art:

[0005] Existing fiber optic hermetic flange designs and assembly methods are complex and costly. Furthermore, their resistance to positive and negative pressure is poor.

[0006] Therefore, there is a need for a fiber optic hermetic flange and a sealing assembly for the fiber optic hermetic flange to at least partially solve the above-mentioned technical problems. Summary of the Invention

[0007] This invention provides an optical fiber hermetic flange and a sealing assembly for the optical fiber hermetic flange. The structure is simple, the assembly is convenient, and it can provide bidirectional sealing, ensuring resistance to positive and negative pressure.

[0008] In a first aspect, the present invention provides an optical fiber hermetic flange, the optical fiber hermetic flange comprising:

[0009] A flange body having a horizontal through mounting hole at its center;

[0010] A sealing assembly fixed to the mounting hole, the sealing assembly comprising:

[0011] A connector, comprising a connector body, the connector body being constructed as a cylindrical shell and having a through hole along the axial direction through which an optical fiber lens assembly can pass, the through hole being constructed as a first conical opening at the left and right ends near the connector body, the first conical opening having a gradually decreasing diameter from the outside to the inside;

[0012] An annular wedge is embedded within the first conical opening. The annular wedge has a first conical surface corresponding to the first conical opening and a second conical opening located on the opposite side of the first conical surface. The diameter of the second conical opening gradually decreases from the outside to the inside.

[0013] A sealing ring is embedded in the second conical opening and is movable relative to the annular wedge along the radial direction of the connector body. The end of the sealing ring near the annular wedge has a second conical surface corresponding to the second conical opening.

[0014] A protective cover is fitted onto the outer circumferential surface of the connector body and fixes the sealing ring and the annular wedge within the space enclosed by the connector. The protective cover has a through hole corresponding to the perforation. The outer wall of the protective cover abuts against the wall of the mounting hole.

[0015] When the fiber optic lens assembly passes through the perforation, the inner wall of the sealing ring is tightly attached to the outer wall of the fiber optic lens assembly to achieve a seal.

[0016] The fiber optic airtight flange according to the present invention includes a flange body and a sealing assembly. The sealing assembly is formed by the cooperation of a connector, an annular wedge, a sealing ring, and a protective cover, with few components and a very simple structure. The connector, annular wedge, sealing ring, and protective cover can be assembled through a detachable, interlocking connection, making installation very flexible and convenient. Furthermore, under normal conditions (or when there is no pressure difference or the pressure difference is zero on both sides of the sealing ring), the sealing rings on both sides can provide bidirectional sealing by being tightly against the fiber optic lens assembly. When a pressure difference exists on either side of the sealing ring, the corresponding sealing ring will move slightly inward along the radial direction of the connector body under the action of the pressure difference, thus fitting more tightly against the outer wall of the fiber optic lens assembly. The greater the pressure difference, the tighter the fit and the better the airtightness. Therefore, when the fiber optic lens assembly is installed in a GIS via the fiber optic airtight flange of the present invention, a seal can be achieved regardless of which pressure is greater (i.e., a pressure difference exists on both sides of the sealing ring).

[0017] Optionally, the protective cover is threaded to the outer peripheral surface of the connector body, and the inner wall of the protective cover and the outer peripheral surface of the connector body are provided with corresponding threaded connection structures.

[0018] Optionally, the outer peripheral surface of the connector body is further provided with a protrusion that protrudes radially outward, the protrusion being located between the two protective covers and abutting against the wall of the mounting hole.

[0019] Based on the technical solution of this embodiment, when the sealing assembly is fixed in the mounting hole by the outer walls of the protective covers on both sides abutting against the hole wall, the sealing assembly may vibrate when the fiber optic airtight flange is working due to the mutual restriction and support on both sides. Over time, this will inevitably lead to adverse effects such as poor sealing performance. Therefore, a protrusion is provided on the outer circumferential surface of the connector body, and an additional point that can provide mutual restriction and support is added. In particular, it is located between the two protective covers, which solves the problem of vibration of the sealing assembly.

[0020] Optionally, the protrusion is constructed as a convex-shaped block structure, smaller at the top and larger at the bottom. And / or the protrusion and the connector body are an integral structure.

[0021] Based on the technical solution of this embodiment, the protruding block adopts a convex-shaped block structure that is smaller at the top and larger at the bottom. Due to the special stepped structure on both sides, compared with the easily conceivable square, trapezoidal, and semi-circular shapes, it has been verified by experiments to have a better effect on reducing vibration.

[0022] Optionally, when the sealing assembly is fixed to the mounting hole, a portion of the sealing assembly is located inside the mounting hole, and another portion of the sealing assembly extends to the outside of the mounting hole.

[0023] Optionally, the flange body has flange fixing holes spaced circumferentially along its edge for bolts to pass through.

[0024] Optionally, the left end face of the flange body is provided with an annular sealing groove for placing a sealing ring and / or the right end face of the flange body is provided with an annular sealing groove for placing a sealing ring.

[0025] Optionally, the sealing ring is an E-type rubber ring.

[0026] Secondly, the present invention also provides a sealing assembly for an optical fiber hermetic flange, the sealing assembly comprising:

[0027] A connector, comprising a connector body, the connector body being constructed as a cylindrical shell and having a through hole along the axial direction through which an optical fiber lens assembly can pass, the through hole being constructed as a first conical opening at the left and right ends near the connector body, the first conical opening having a gradually decreasing diameter from the outside to the inside;

[0028] An annular wedge is embedded within the first conical opening. The annular wedge has a first conical surface corresponding to the first conical opening and a second conical opening located on the opposite side of the first conical surface. The diameter of the second conical opening gradually decreases from the outside to the inside.

[0029] A sealing ring, which is embedded in the second conical opening, and the end of the sealing ring near the annular wedge has a second conical surface corresponding to the second conical opening;

[0030] A protective cover is fitted onto the outer circumferential surface of the connector body and fixes the sealing ring and the annular wedge within the space enclosed by the connector. The protective cover has a through hole corresponding to the perforation.

[0031] When the fiber optic lens assembly passes through the perforation, the inner wall of the sealing ring is tightly attached to the outer wall of the fiber optic lens assembly to achieve a seal.

[0032] The fiber optic airtight flange according to the present invention includes a flange body and a sealing assembly. The sealing assembly is formed by the cooperation of a connector, annular wedge, sealing ring, and protective cover, resulting in a small number of parts and a very simple structure. The connector, annular wedge, sealing ring, and protective cover can be assembled through a detachable, nested connection, making installation very flexible and convenient. Furthermore, under normal circumstances, the sealing rings on both sides are in close contact with the fiber optic lens assembly to achieve bidirectional sealing.

[0033] Optionally, the outer circumferential surface of the connector body further has a radially outwardly projecting protrusion between the two protective covers, the protrusion being at the same height as the protective cover. And / or the sealing ring is movable relative to the annular wedge in the radial direction of the connector body.

[0034] Additional advantages, objects, and features of the invention will be set forth in part in the description which follows, and will also become apparent in part to those skilled in the art upon studying the description, or may be learned by practice of the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures specifically pointed out in the description and drawings.

[0035] Those skilled in the art will understand that the objectives and advantages achievable with the present invention are not limited to those specifically described above, and that the above and other objectives achievable with the present invention will become clearer from the following detailed description. Attached Figure Description

[0036] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, are not intended to limit the scope of the invention. The components in the drawings are not drawn to scale but are merely illustrative of the principles of the invention. For ease of illustration and description of certain parts of the invention, corresponding portions in the drawings may be enlarged, i.e., may appear larger relative to other components in an exemplary device actually manufactured according to the invention. In the drawings:

[0037] Figure 1 This is a cross-sectional view of an optical fiber hermetic flange according to an embodiment of the present invention;

[0038] Figure 2 for Figure 1 A schematic diagram of the sealing components;

[0039] Figure 3 This is a schematic diagram of the flange body in an embodiment of the fiber optic hermetic flange of the present invention; and

[0040] Figure 4 This is a schematic diagram of a sealing assembly for an optical fiber hermetic flange in operation according to an embodiment of the present invention.

[0041] Explanation of reference numerals in the attached figures:

[0042] 10. Fiber optic lens assembly;

[0043] 100. Fiber optic airtight flange;

[0044] 110. Flange body; 111. Mounting hole; 112. Flange fixing hole; 113. Annular sealing groove;

[0045] 120. Sealing assembly;

[0046] 130. Connector; 131. Connector body; 132. Through hole; 133. First conical opening; 134. Protrusion; 135. Protruding ring;

[0047] 140. Ring wedge; 141. First conical surface; 142. Second conical opening;

[0048] 150. Sealing ring; 151. Second conical surface;

[0049] 160. Protective cover; 161. Through hole;

[0050] 200. Sealing assembly;

[0051] 210. Connector; 211. Connector body; 212. Through hole; 213. First conical opening; 214. Protrusion;

[0052] 220. Ring wedge; 221. First conical surface; 222. Second conical opening;

[0053] 230. Sealing ring; 231. Second conical surface;

[0054] 240. Protective cover; 241. Through hole. Detailed Implementation

[0055] The objects and functions of the present invention, as well as the methods for achieving these objects and functions, will be clarified by referring to exemplary embodiments. However, the present invention is not limited to the exemplary embodiments disclosed below; it can be implemented in various forms. The purpose of this specification is merely to help those skilled in the art to comprehensively understand the specific details of the invention.

[0056] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or combinations thereof.

[0057] The ordinal numbers such as "first" and "second" used in this invention are merely identifiers and do not have any other meaning, such as a specific order. Moreover, for example, the term "first component" does not imply the existence of "second component," and the term "second component" does not imply the existence of "first component."

[0058] It should be noted that the terms “up,” “down,” “front,” “back,” “left,” “right,” “inner,” “outer,” and similar expressions used in this article are for illustrative purposes only and are not intended to be limiting.

[0059] In a first aspect, the present invention provides a fiber optic airtight flange 100. The fiber optic airtight flange 100 can be applied, for example, in the field of airtight devices, such as in the installation of fiber optic lens assemblies in GIS, and can achieve bidirectional sealing of the fiber optic lens assembly.

[0060] Generally, a fiber optic lens assembly includes an objective lens group, a fiber optic image bundle, and an eyepiece group. In the fiber optic hermetic flange 100 of the present invention, the sealing component 120 (described below) actually passes through the fiber optic image bundle of the fiber optic lens assembly.

[0061] First, the fiber optic airtight flange 100 in this embodiment, used for fiber optic lens assembly installation, is merely an example and is not intended to be limiting. The fiber optic airtight flange 100 of this embodiment can also be used in other devices with wire harness or tubular structures, achieving bidirectional sealing in the same way.

[0062] In a preferred embodiment, refer to Figure 1 , Figure 2 As shown, where Figure 1 This is a cross-sectional view of an optical fiber airtight flange 100 according to an embodiment of the present invention. Figure 2 for Figure 1 A schematic diagram of the sealing assembly 120 is shown. The fiber optic hermetic flange 100 includes a flange body 110 and a sealing assembly 120. The flange body 110 is used to fix the sealing assembly 120 and to install the entire fiber optic hermetic flange 100 in the GIS. The flange body 110 can adopt a real flange structure, i.e., a flange disc or flange. The flange body 110 in the illustration has a structure with one side being flat and the other side protruding, which is not a limitation. Other structures can also be used, such as a plate-type flat-welded flange. The sealing assembly 120 has a through-hole 132 for the fiber optic lens assembly to pass through, which can achieve bidirectional sealing.

[0063] In the illustrated embodiment, such as Figure 1 , Figure 2 As shown, the flange body 110 has a horizontally penetrating mounting hole 111 at its center. The mounting hole 111 can be a single-diameter mounting hole or a multi-diameter mounting hole 111. Additionally, as shown... Figure 3 As shown, flange body 110 has flange fixing holes 112 spaced circumferentially along its edge for bolts to pass through. Flange body 110 can be connected to other equipment (such as GIS) by bolt fastening through flange fixing holes 112.

[0064] The sealing assembly 120 is fixed in the mounting hole 111. The method of fixing the sealing assembly 120 is not limited; for example, it can be fixed by internal clamping or spot welding. The sealing assembly 120 may include a connector 130, an annular wedge 140, a sealing ring 150, and a protective cover 160.

[0065] Specifically, connector 130 includes a connector 130 body. The connector 130 body has a cylindrical shell structure and is generally elongated. The connector 130 body has a through-hole 132 along the axial direction (i.e., the horizontal direction shown in the figure) for the fiber optic lens assembly to pass through. The through-hole 132 is designed with tapered openings at both ends near the connector 130 body. To distinguish it from the second tapered opening 142 described below, it is named the first tapered opening 133. The first tapered opening 133 has a flared shape similar to a trumpet. The diameter of the first tapered opening 133 gradually decreases from the outside to the inside. Figure 2 For example, the diameter of the first conical opening 133 on the left gradually decreases from left to right. The diameter of the first conical opening 133 on the right gradually decreases from right to left.

[0066] An annular wedge 140 is fitted within a first conical opening 133. The annular wedge 140 has a conical surface corresponding to the first conical opening 133. To distinguish it from the second conical surface 151 described below, it is named the first conical surface 141. That is, when the annular wedge 140 is fitted within the first conical opening 133, the first conical surface 141 fits into the first conical opening 133. The annular wedge 140 has a second conical opening 142 on the opposite side of the first conical surface 141. The diameter of the second conical opening 142 gradually decreases from the outside to the inside.

[0067] The sealing ring 150 is embedded within the second conical opening 142 and is movable radially relative to the annular wedge 140 along the body of the connector 130. The sealing ring 150 has a second conical surface 151 corresponding to the second conical opening 142 at one end near the annular wedge 140. That is, when the sealing ring 150 is embedded within the second conical opening 142, the second conical surface 151 fits into the second conical opening 142. The second conical surface 151 can be a conical surface with a single inclination angle or a continuous conical surface structure with multiple inclination angles. The sealing ring 150 can be an E-type rubber ring to enhance airtightness.

[0068] The protective cover 160 is fitted onto the outer circumferential surface of the connector 130 body. For example, it can be fitted using a snap-fit ​​or screw-fit method, the specific method being unrestricted. When a screw-fit method is used, the inner wall of the protective cover 160 and the outer circumferential surface of the connector 130 body are provided with corresponding threaded connection structures. For example, corresponding internal and external threads are provided. The screw-fit method also allows for flexible fine-tuning of the position of the sealing ring 150, ensuring it fits snugly against fiber optic image bundles of various diameters. Specifically, the internal thread of the inner wall of the protective cover 160 can directly connect with the external thread of the outer circumferential surface of the connector 130 body. Alternatively, the connector 130 body can have a protruding ring 135 on its outer circumferential surface, with external threads on the ring 135, and the internal thread of the inner wall of the protective cover 160 connects with the external thread of the ring 135. The protective cover 160, fitted onto the outer circumferential surface of the connector 130 body, fixes the sealing ring 150 and the annular wedge 140 within the space enclosed by the protective cover 160 and the connector 130. At this point, the outer wall of the fiber optic lens assembly (fiber optic image bundle) passing through the perforation 132 is tightly fitted against the inner wall of the sealing ring 150 to achieve a seal. It is understood that the protective cover 160 has a through hole 161 corresponding to the perforation 132 to allow the fiber optic image bundle to pass through. To ensure that the inner wall of the sealing ring 150 is tightly fitted against the outer wall of the fiber optic image bundle during the assembly of the fiber optic hermetic flange 100, the diameter of the through hole 161 of the protective cover 160 can be larger than the diameter of the fiber optic image bundle, allowing observation through the through hole 161. The outer wall of the protective cover 160 abuts against the wall of the mounting hole 111, thereby fixing the sealing assembly 120 by embedding it into the mounting hole 111, resulting in easier disassembly and replacement.

[0069] Furthermore, the sealing ring 150 is movable relative to the annular wedge 140 in the radial direction of the connector 130 body. Normally, when the fiber optic lens assembly is installed in the GIS via the fiber optic airtight flange 100 of this invention, the fiber optic image bundle of the fiber optic lens assembly can achieve bidirectional sealing due to the sealing component 120. In reality, the internal and external pressures of the GIS equipment may not be consistent. When the internal and external pressures of the GIS equipment are inconsistent, when the fiber optic image bundle passes through the perforation 132 in the connector 130, a certain gap exists, resulting in a pressure difference between the left and right sides of the sealing ring 150. For example, when the internal pressure of the GIS equipment is greater than the external pressure, the left sealing ring 150 will be squeezed to the right under the pressure difference, and will move a small distance inward along the radial direction of the connector 130 body, closely adhering to the left annular wedge 140, thereby more tightly fitting against the outer wall of the fiber optic lens assembly. When the internal pressure of the GIS equipment is lower than the external pressure, the right-side sealing ring 150 will be squeezed to the left under the pressure difference, and will move slightly inward along the radial direction of the connector 130 body, tightly adhering to the right-side annular wedge 140, thus fitting more tightly against the outer wall of the fiber optic lens assembly. The greater the pressure difference, the tighter the fit and the better the airtightness. Therefore, when the fiber optic lens assembly is installed in the GIS through the fiber optic airtight flange 100 of this invention, a seal can be achieved regardless of which pressure is greater (i.e., a pressure difference exists on both sides of the sealing ring 150). When the pressure difference disappears, the sealing ring 150 can return to its original position due to its own rebound characteristics.

[0070] When assembling the fiber optic airtight flange 100, the connector 130 can be placed vertically, and the annular wedge 140, sealing ring 150, and protective cover 160 on one side can be installed sequentially. Then, the same steps are followed to install the annular wedge 140, sealing ring 150, and protective cover 160 on the other side. The assembled sealing assembly 120 is then fitted into the mounting hole 111 of the flange body 110, completing the assembly of the entire fiber optic airtight flange 100. This process is simple and quick. When the sealing assembly 120 is fixed in the mounting hole 111, a portion of the sealing assembly 120 can be located inside the mounting hole 111, while another portion extends outside the mounting hole 111. To allow adjustment of the protective cover 160 as needed (e.g., by screwing the protective cover 160 in or out along the outer circumference of the connector 130), a larger diameter mounting hole 111 can be provided on the corresponding side of the flange body 110 for easier operation.

[0071] The fiber optic airtight flange 100 according to the present invention includes a flange body 110 and a sealing assembly 120. The sealing assembly 120 is formed by the interaction of a connector 130, an annular wedge 140, a sealing ring 150, and a protective cover 160, resulting in a small number of parts and a very simple structure. The connector 130, annular wedge 140, sealing ring 150, and protective cover 160 can be assembled using a detachable, nested connection, making assembly very flexible and convenient. Furthermore, bidirectional sealing is achieved through the sealing rings 150 on both sides.

[0072] Following the previous text, when the sealing assembly 120 is fixed in the mounting hole 111 by abutting against the outer walls of the protective covers 160 on both sides, the sealing assembly 120 may vibrate during operation of the fiber optic airtight flange 100 due to the mutual restraint and support from both sides. Over time, this may inevitably lead to a decrease in sealing performance or even damage to the assembly. Therefore, a radially outward protrusion 134 can also be provided on the outer circumferential surface of the connector 130 body. The protrusion 134 is located between the two protective covers 160 and abuts against the wall of the mounting hole 111. For example, the protrusion 134 can be located in the exact middle of the two protective covers 160. The protrusion 134 can be an annular protrusion 134 structure surrounding the outer circumferential surface of the connector 130 body, or one or more spaced-apart protrusion 134 structures. By providing a protrusion 134 on the outer circumferential surface of the connector 130 body, an additional point of mutual restraint and support can be added to the sealing assembly 120. This point, specifically located between the two protective covers 160, solves the problem of vibration in the sealing assembly 120. Furthermore, the protrusion 134 and the connector 130 body can be an integral structure to improve strength. Preferably, the protrusion 134 is a convex-shaped block structure, smaller at the top and larger at the bottom. Due to the special stepped structure on both sides, it provides good vibration damping.

[0073] Continue to refer to Figure 1 According to the fiber optic airtight flange 100 of the present invention, in order to achieve a good sealing effect when connected to external equipment such as GIS, an annular sealing groove 113 for placing a sealing ring is provided on the left end face of the flange body 110. An annular sealing groove 113 for placing a sealing ring is also provided on the right end face of the flange body 110. The left and right end faces of the flange body 110 can each be provided with an appropriate number of annular sealing grooves 113 according to actual needs. For example, two annular sealing grooves 113 with unequal radii can be provided on the left end face of the flange body 110, and one annular sealing groove 113 can be provided on the right end face of the flange body 110. Figure 1 The embodiments shown are merely examples and are not intended to be limiting.

[0074] In summary, the fiber optic airtight flange 100 according to the present invention has a small number of components and a very simple structure, which can reduce production costs. The components can be assembled using a detachable connection method involving embedding and sleeve, making assembly highly efficient and convenient. Furthermore, the fiber optic airtight flange 100 achieves bidirectional sealing through the sealing rings 150 on both sides of the sealing assembly 120, ensuring resistance to both positive and negative pressures. Simultaneously, the connector 130 of the sealing assembly 120 also has a centrally located protrusion 134, which solves the problem of vibration in the sealing assembly 120 during operation of the fiber optic airtight flange 100.

[0075] Secondly, the present invention also provides a sealing assembly 200 for an optical fiber hermetic flange, which can be used to bidirectionally seal an optical fiber lens assembly 10 passing through the sealing assembly 200.

[0076] refer to Figure 4 Specifically, the sealing assembly 200 may include a connector 210, an annular wedge 220, a sealing ring 230, and a protective cover 240.

[0077] The connector 210 includes a connector 210 body. The connector 210 body is a cylindrical shell and has a through hole 212 along the axial direction through which the fiber optic lens assembly 10 can pass. The through hole 212 is constructed as a first conical opening 213 at its left and right ends near the connector 210 body. The diameter of the first conical opening 213 gradually decreases from the outside to the inside. An annular wedge 220 is embedded in the first conical opening 213. The annular wedge 220 has a first conical surface 221 corresponding to the first conical opening 213 and a second conical opening 222 located on the opposite side of the first conical surface 221. The diameter of the second conical opening 222 gradually decreases from the outside to the inside. A sealing ring 230 is embedded in the second conical opening 222. The end of the sealing ring 230 near the annular wedge 220 has a second conical surface 231 corresponding to the second conical opening 222. The protective cover 240 is fitted onto the outer circumferential surface of the connector 210 body, fixing the sealing ring 230 and the annular wedge 220 within the space enclosed by the protective cover 240 and the connector 210. The protective cover 240 has a through hole 241 corresponding to the through hole 212. When the fiber optic lens assembly passes through the through hole 212, the inner wall of the sealing ring 230 is tightly pressed against the outer wall of the fiber optic lens assembly to achieve a seal.

[0078] Furthermore, the outer circumferential surface of the connector 210 body has a radially outwardly projecting protrusion 214 located between the two protective covers 240. The protrusion 214 and the protective cover 240 are at the same height. In addition, the sealing ring 230 is movable relative to the annular wedge 220 in the radial direction of the connector 210 body.

[0079] The effects and other features of the sealing component 200 in this embodiment will not be described further, as it is the same as the sealing component in the fiber optic airtight flange in the above technical solution, and has all the corresponding features and effects.

[0080] Other embodiments of the invention will be readily conceived and understood by those skilled in the art in conjunction with the description and practice of the invention disclosed herein. The descriptions and embodiments are to be considered exemplary only, and the true scope and spirit of the invention are defined by the claims.

Claims

1. A fiber optic hermetic flange, characterized in that, The fiber optic hermetic flange includes: A flange body having a horizontal through mounting hole at its center; A sealing assembly fixed to the mounting hole, the sealing assembly comprising: A connector, comprising a connector body, the connector body being constructed as a cylindrical shell and having a through hole along the axial direction for the fiber optic lens assembly to pass through, the through hole being constructed as a first conical opening at the left and right ends near the connector body, the first conical opening having a gradually decreasing diameter from the outside to the inside; An annular wedge is embedded within the first conical opening. The annular wedge has a first conical surface corresponding to the first conical opening and a second conical opening located on the opposite side of the first conical surface. The diameter of the second conical opening gradually decreases from the outside to the inside. A sealing ring is embedded in the second conical opening and is movable relative to the annular wedge along the radial direction of the connector body. The end of the sealing ring near the annular wedge has a second conical surface corresponding to the second conical opening. A protective cover is fitted onto the outer circumferential surface of the connector body and fixes the sealing ring and the annular wedge within the space enclosed by the connector. The protective cover has a through hole corresponding to the perforation. The outer wall of the protective cover abuts against the wall of the mounting hole. When the fiber optic lens assembly passes through the perforation, the inner wall of the sealing ring is tightly attached to the outer wall of the fiber optic lens assembly to achieve a seal.

2. The fiber optic hermetic flange according to claim 1, characterized in that, The protective cover is threaded to the outer peripheral surface of the connector body, and the inner wall of the protective cover and the outer peripheral surface of the connector body are provided with corresponding threaded connection structures.

3. The fiber optic hermetic flange according to claim 2, characterized in that, The outer peripheral surface of the connector body is also provided with a protrusion that protrudes radially outward, the protrusion being located between the two protective covers and abutting against the wall of the mounting hole.

4. The fiber optic hermetic flange according to claim 3, characterized in that, The protrusion is constructed as a convex-shaped block structure, smaller at the top and larger at the bottom; and / or The protrusion and the connector body are an integral structure.

5. The fiber optic hermetic flange according to claim 4, characterized in that, When the sealing assembly is fixed to the mounting hole, a portion of the sealing assembly is located inside the mounting hole, and another portion of the sealing assembly extends to the outside of the mounting hole.

6. The fiber optic hermetic flange according to claim 1, characterized in that, The flange body has flange fixing holes spaced circumferentially along its edge for bolts to pass through.

7. The fiber optic hermetic flange according to claim 6, characterized in that, The left end face of the flange body is provided with an annular sealing groove for placing a sealing ring and / or the right end face of the flange body is provided with an annular sealing groove for placing a sealing ring.

8. The fiber optic hermetic flange according to claim 1, characterized in that, The sealing ring is an E-type rubber ring.

9. A sealing assembly for an optical fiber hermetic flange, characterized in that, The sealing assembly includes: A connector, comprising a connector body, the connector body being constructed as a cylindrical shell and having a through hole along the axial direction through which an optical fiber lens assembly can pass, the through hole being constructed as a first conical opening at the left and right ends near the connector body, the first conical opening having a gradually decreasing diameter from the outside to the inside; An annular wedge is embedded within the first conical opening. The annular wedge has a first conical surface corresponding to the first conical opening and a second conical opening located on the opposite side of the first conical surface. The diameter of the second conical opening gradually decreases from the outside to the inside. A sealing ring is embedded in the second conical opening, and the end of the sealing ring near the annular wedge has a second conical surface corresponding to the second conical opening; the sealing ring is movable relative to the annular wedge in the radial direction of the connector body; A protective cover is fitted onto the outer circumferential surface of the connector body and fixes the sealing ring and the annular wedge within the space enclosed by the connector. The protective cover has a through hole corresponding to the perforation. When the fiber optic lens assembly passes through the perforation, the inner wall of the sealing ring is tightly attached to the outer wall of the fiber optic lens assembly to achieve a seal.

10. The sealing assembly according to claim 9, characterized in that, The outer peripheral surface of the connector body also has a radially outward protrusion between the two protective covers, and the protrusion and the protective cover have the same height.

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