Optical fiber penetrating device and optical fiber sensing temperature measuring equipment

Abstract

The utility model discloses an optical fiber penetrating device, which comprises a penetrating device main body, an optical fiber penetrating hole and a counterbore communicated with the optical fiber penetrating hole are formed on the penetrating device main body, and a connecting part is formed at the end part of the penetrating device main body; the insertion core is inserted into the counterbore, and the insertion core is provided with an insertion core through hole communicated with the optical fiber through hole; the built-in optical fiber is arranged in the insertion core through hole and the optical fiber through hole in a penetrating manner; and the connection part is connected with the single-head adapter, the single-head adapter is provided with a joint part, and the joint part is configured to be connected with a switching optical fiber so that the built-in optical fiber can be in butt joint with the switching optical fiber. The utility model also discloses an optical fiber sensing temperature measuring device based on the optical fiber penetrating device. The through device is simple in main body structure and low in cost, the insertion core is not easy to break, the through hole of the insertion core is low in processing difficulty, field installation, debugging and maintenance are facilitated, the guide sleeve is adopted, and the insertion core butt joint coaxiality error is low.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to an optical fiber through-hole and an optical fiber temperature sensing device. Background Art

[0002] The large amount of heat generated by the internal loss of the transformer will cause the oil temperature in the transformer to be too high, which may cause the transformer to fail. Therefore, it is necessary to monitor the internal temperature of the transformer in real time to detect temperature abnormalities early to reduce or avoid the occurrence of failures.

[0003] Fiber optic temperature sensing equipment has been widely used in the internal temperature monitoring of oil-immersed transformers. Different from traditional thermal analog detection and indirect calculation, fiber optic temperature sensing equipment has the advantages of high detection accuracy, fast response, stability and reliability. Generally speaking, the structural components of fiber optic temperature sensing equipment mainly include: fiber optic temperature measuring probes arranged on the transformer windings, through-disks installed on the side walls of the transformer, through-disks installed on the through-disks, and fiber optic temperature demodulators located outside the transformer. Among them, the through-disk is the core part of the fiber optic temperature sensing equipment, which is used to achieve optical connectivity between the fiber optic temperature measuring probe and the fiber optic temperature demodulator while ensuring the sealing of the oil-immersed transformer.

[0004] Chinese utility model patent CN209525022U discloses an optical fiber through-hole, which has at least the following problems: a thin and long ferrule is inserted through the main body of the optical fiber through-hole, and the ferrule is long, which makes installation difficult and easy to break; especially when the length of the main body of the optical fiber through-hole is too long, the matching ferrule is too long, which makes it easier to break; at the same time, the narrow inner hole of the through-hole main body for inserting the ferrule is difficult to manufacture, and the production cost is high. Utility Model Content

[0005] In view of this, the present invention mainly focuses on the through-hole components of the optical fiber sensing temperature measuring device, and needs to overcome at least one of the above-mentioned defects in the prior art.

[0006] The utility model provides an optical fiber through-device, comprising:

[0007] A through-hole body is provided with an optical fiber through-hole and a countersunk hole connected to the optical fiber through-hole, and a connecting portion is formed at the end of the through-hole body;

[0008] A ferrule, wherein the countersunk hole is provided with the ferrule, and the ferrule has a ferrule through hole connected to the optical fiber through hole;

[0009] A built-in optical fiber is inserted into the ferrule through hole and the optical fiber through hole;

[0010] A single-head adapter, the connecting part is connected with the single-head adapter, the single-head adapter has a connection head, and the connection head is configured to be connected with an adapter optical fiber so that the built-in optical fiber is butted with the adapter optical fiber.

[0011] An optical fiber penetrator disclosed by the utility model can be connected with a connecting part through a single-head adapter. The penetrator main body is directly provided with an optical fiber through hole for the built-in optical fiber to pass through, and has a simple structure and low cost; the ferrule only needs to be installed in the counterbore, and then the built-in optical fiber passes through the ferrule through hole and the optical fiber through hole, which can effectively shorten the length of the ferrule, the ferrule is not easy to break, and is convenient for on-site installation, debugging and maintenance; the ferrule adopts a conventional length, the ferrule is short, and the processing difficulty of the ferrule through hole is low.

[0012] In some embodiments, the optical fiber penetrator further includes a guide sleeve which is sleeved on the single-head adapter. One end of the guide sleeve is inserted with the ferrule, and the ferrule is in transitional fit or interference fit with the guide sleeve. The other end of the guide sleeve is configured to be inserted into the adapter optical fiber. The guiding is beneficial to the accurate butt joint between the adapter optical fiber and the built-in optical fiber in the ferrule.

[0013] In some embodiments, the optical fiber penetrator further includes a shrinkage sleeve which is fixed on the single-head adapter. The ferrule passes through the shrinkage sleeve and is in interference fit with the shrinkage sleeve. One end face of the guide sleeve contacts with the internal structure of the single-head adapter, and the other end face contacts with the shrinkage sleeve.

[0014] In some embodiments, the connecting part is provided with an external thread, and the single-head adapter is provided with an internal thread, and the connecting part is threadedly connected with the single-head adapter; or,

[0015] The connecting part is provided with an internal thread, and the single-head adapter is provided with an external thread, and the connecting part is threadedly connected with the single-head adapter.

[0016] In some embodiments, the penetrator main body is configured to be sleeved on a through-disk, and the penetrator main body has an anti-rotation part which is configured to be in anti-rotation cooperation with the through-disk. More specifically, the outer ring of the penetrator main body can be a milled flat structure which is matched with the through-disk hole to prevent rotation.

[0017] In some embodiments, the connection head is one of an ST connector, an SC connector, an FC connector, and an LC connector; and / or,

[0018] The optical fiber penetrator further includes a sealing filler which is filled between the ferrule and the counterbore and / or the sealing filler is filled between the built-in optical fiber and the optical fiber through hole. More specifically, the material of the sealing filler can be a low-melting-point glass material or a sealant material.

[0019] In some embodiments, the ferrule includes a ferrule tail and a ferrule head, and the ferrule tail is installed in the countersunk hole;

[0020] wherein, the end face of the built-in optical fiber is flush with the end face of the ferrule head; and / or, the ferrule through hole includes a reduced-diameter hole section penetrating through the ferrule tail, and the aperture of the reduced-diameter hole section decreases in the direction from the ferrule tail towards the ferrule head; and / or, the edge of the ferrule head is chamfered to form a chamfered portion.

[0021] In some embodiments, the penetrator body further includes an intermediate portion and a limiting convex portion. The intermediate portion is located between the two connecting portions, and the limiting convex portion is disposed around the outer periphery of the intermediate portion. The optical fiber penetrator further includes:

[0022] a nut configured to be threadedly connected to the intermediate portion;

[0023] a sealing ring disposed at one end of the limiting convex portion facing the nut.

[0024] In some embodiments, there are two countersunk holes and two single-head adapters. The two countersunk holes are in one-to-one communication with the two ends of the optical fiber perforation. The connecting portions are respectively formed at both ends of the penetrator body, and each single-head adapter is respectively connected to each connecting portion in a one-to-one manner; and / or, the built-in optical fiber is a bare fiber.

[0025] An embodiment of the present invention further provides an optical fiber sensing temperature measurement device, including the optical fiber penetrator described in any of the above embodiments.

[0026] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become obvious and easy to understand from the following description of the embodiments in conjunction with the drawings, wherein:

[0028] Figure 1 is a cross-sectional view of an optical fiber penetrator in an embodiment of the present invention;

[0029] Figure 2 is a cross-sectional view of the installation of a penetrator and a penetration disc in an embodiment of the present invention;

[0030] Figure 3 is an exploded view of the penetrator in an embodiment of the present invention;

[0031] Figure 4 is a cross-sectional view of the ferrule in an embodiment of the present invention.

[0032] Among them, 1. Penetrator main body, 11. Connecting part, 111. Optical fiber through hole, 112. Countersunk hole, 12. Intermediate part, 13. Limiting convex part, 2. Penetrating disc, 21. Ferrule through hole, 211. Reduced diameter hole section, 3. Built-in optical fiber, 4. Ferrule, 41. Ferrule tail, 42. Ferrule head, 5. Sealing ring, 6. Single-head adapter, 7. Guide sleeve, 8. Expansion sleeve. Specific embodiments

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "horizontal", "vertical", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "coupling", "communicating", "connecting", "linking", "matching" should be understood in a broad sense. For example, it can be a fixed connection, an integral connection, or a detachable connection; it can be the communication inside two elements; it can be directly connected or indirectly connected through an intermediate medium; "matching" can be the matching of surface to surface, or the matching of point to surface or line to surface, and also includes the matching of hole and shaft. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0036] The optical fiber penetrator provided by the embodiments of the present invention will be described below with reference to the drawings, where Figure 1 is a schematic cross-sectional view of an optical fiber penetrator in an embodiment of the present invention; Figure 2 is a schematic cross-sectional view of the installation of a penetrator and a penetrating disc in an embodiment of the present invention; Figure 3 is an exploded view of the penetrator in an embodiment of the present invention; Figure 4 is a schematic cross-sectional view of the ferrule in an embodiment of the present invention.

[0037] As Figures 1 to 4As shown, according to an embodiment of the present utility model, the optical fiber penetrator includes a penetrator main body 1, an internal optical fiber 3, a ferrule 4, and a single-head adapter 6. The penetrator main body 1 is provided with an optical fiber through hole 111 and a counterbore 112 communicating with the optical fiber through hole 111. A connecting portion 11 is formed at the end of the penetrator main body 1; the counterbore 112 is inserted with the ferrule 4, and the ferrule 4 has a ferrule through hole 21 communicating with the optical fiber through hole 111; the internal optical fiber 3 is disposed in the ferrule through hole 21 and the optical fiber through hole 111; the connecting portion 11 is connected with the single-head adapter 6, and the single-head adapter 6 has a connection head configured to be connected with a transition optical fiber (not shown in the figure) so that the internal optical fiber 3 is docked with the transition optical fiber. Among them, the transition optical fiber belongs to an existing structure and will not be elaborated here.

[0038] Its advantages are that the single-head adapter 6 can be connected to the connecting portion 11, and the penetrator main body 1 directly opens the optical fiber through hole 111 for the internal optical fiber 3 to pass through. The structure of the penetrator main body 1 is simple and the cost is low; the ferrule 4 only needs to be installed in the counterbore 112, and then the internal optical fiber 3 passes through the ferrule through hole 21 and the optical fiber through hole 111, which can effectively shorten the length of the ferrule 4, the ferrule 4 is not easily broken, and it is convenient for on-site installation, debugging and maintenance; the ferrule 4 adopts a conventional length, the optical fiber penetrator has strong adaptability, and the ferrule 4 is short, and the processing difficulty of the ferrule through hole 21 is low.

[0039] In addition, according to the embodiment of the present utility model, the internal optical fiber 3 is a bare fiber, which has a small volume and a simple structure.

[0040] According to an embodiment of the present utility model, there are two counterbores 112 and two single-head adapters 1. The two counterbores 112 are in one-to-one communication with both ends of the optical fiber through hole 111. Connecting portions 11 are respectively formed at both ends of the penetrator main body 1, and each single-head adapter 1 is respectively connected to each connecting portion 11 in one-to-one correspondence. Furthermore, in the scenario where the penetration disc 2 is used, the optical fiber penetrator can be fixed on the penetration disc 2 first, and then the two ends of the optical fiber penetrator are respectively connected to the corresponding transition optical fibers, which can facilitate the installation operation of the optical fiber penetrator and avoid the inconvenience of operation when connecting the transition optical fiber to the optical fiber penetrator first and then fixing the optical fiber penetrator on the penetration disc 2 and the problem of possible damage to the transition optical fiber.

[0041] According to some embodiments of the present utility model, the optical fiber penetrator further includes a guiding sleeve 7. The guiding sleeve 7 is disposed through the single-head adapter 6. One end of the guiding sleeve 7 is inserted with the ferrule 4, and the ferrule 4 is in transitional fit or interference fit with the guiding sleeve 7. The other end of the guiding sleeve 7 is configured to be inserted into the transition optical fiber. The guiding sleeve 7 is beneficial to guiding the ferrule 4 to be more accurately and reliably docked with the transition optical fiber.

[0042] In some embodiments, refer to Figure 1 and Figure 3, the optical fiber penetrator further includes a tensioning sleeve 8, the tensioning sleeve 8 is fixed to the single-head adapter 6, and the ferrule 4 passes through the tensioning sleeve 8 and is in interference fit with the tensioning sleeve 8. More specifically, one end of the guiding sleeve 7 contacts the internal structure of the single-head adapter 6, and the other end of the guiding sleeve 7 contacts the tensioning sleeve 8. The internal structure of the single-head adapter 6 can be the stepped surface of a stepped hole, and thus the guiding sleeve 7 can be limited and fixed, making it not easy for the guiding sleeve 7 to fall off.

[0043] According to some embodiments of the present invention, referring to Figures 1 - 3 , the connecting portion 11 is provided with an external thread, the single-head adapter 6 is provided with an internal thread, and the connecting portion 11 is threadedly coupled to the single-head adapter 6. The connecting portion 11 is a convex cylindrical structure provided with an external thread, and the structure is simple.

[0044] According to some other embodiments of the present invention, the connecting portion 11 is provided with an internal thread, the single-head adapter 6 is provided with an external thread, and the connecting portion 11 is threadedly coupled to the single-head adapter 6. In the embodiments of the present application, it is preferably adopted that the connecting portion 11 is a convex cylindrical structure provided with an external thread.

[0045] According to some embodiments of the present invention, the connecting portion 11 is other fastening couplings, such as rotary snap couplings, plug-and-play couplings, etc. The threaded connection method is preferably adopted.

[0046] In actual design, the connecting portions 11 at both ends of the penetrator body 1 can be designed with external threads or internal threads or other fastening methods, such as snap rotary couplings, convenient plug-and-play couplings and other fastening methods, and the position of the countersunk hole 112 can be designed with corresponding adaptive adjustments.

[0047] According to some embodiments of the present invention, the connector head is one of an ST connector, an SC connector, an FC connector, and an LC connector.

[0048] According to some embodiments of the present invention, the optical fiber penetrator further includes a sealing filler, and the sealing filler is filled between the ferrule 4 and the countersunk hole 112 and / or the sealing filler is filled between the built-in optical fiber 3 and the optical fiber through hole 111 to further improve the sealing performance. More specifically, the material of the sealing filler can be a low-melting-point glass material or a sealant material. A sealing filler made of a low-melting-point glass material is preferably adopted.

[0049] According to the embodiments of the present invention, referring to Figures 1 - 4 , the ferrule 4 includes a ferrule tail 41 and a ferrule head 42, and the ferrule tail 41 is installed in the countersunk hole 112; wherein, the end face of the built-in optical fiber 3 is flush with the end face of the ferrule head 42, and a flush end face is formed to facilitate the butt joint with the end face of the adapter optical fiber. The butt joint means the butting of being directly opposite to each other, so as to better realize optical transmission between the core in the built-in optical fiber 3 and the core in the adapter optical fiber.

[0050] According to an embodiment of the present invention, referring to Figures 1 - 4 , the ferrule 4 includes a ferrule tail portion 41 and a ferrule head portion 42. The ferrule tail portion 41 is installed in the countersunk hole 112; the ferrule through hole 21 includes a reduced-diameter hole section 211 passing through the ferrule tail portion 41, and the aperture of the reduced-diameter hole section 211 decreases in the direction from the ferrule tail portion 41 towards the ferrule head portion 42. The design of the reduced-diameter hole section 211 facilitates the insertion and assembly of the built-in optical fiber 3 during the processing.

[0051] Specifically, referring to Figure 4 , the ferrule 4 includes a ferrule tail portion 41 with a flared opening and a ferrule head portion 42 without a flared opening. The maximum diameter of the flared opening is greater than the outer diameter of the built-in optical fiber 3. The ferrule tail portion 41 is installed in the countersunk hole 112 at the end of the penetrator body 1. The end face of the built-in optical fiber 3 is flush with the end face of the ferrule head portion 42, where "greater than" can be selected to be more than 3 times the diameter.

[0052] In addition, according to an embodiment of the present invention, referring to Figures 1 - 4 , the ferrule 4 includes a ferrule tail portion 41 and a ferrule head portion 42. The ferrule tail portion 41 is installed in the countersunk hole 112; the edge of the ferrule head portion 42 is chamfered to form a chamfered portion.

[0053] According to some embodiments of the present invention, referring to Figures 1 - 3 , the penetrator body 1 further includes an intermediate portion 12 and a limiting convex portion 13. The intermediate portion 12 is located between the two connecting portions 11. The limiting convex portion 13 is annularly arranged on the outer periphery of the intermediate portion 12. The optical fiber penetrator further includes a nut (not shown in the figure), and the nut is configured to be threadedly connected to the intermediate portion 12; a sealing ring 5 is arranged at one end of the limiting convex portion 13 facing the nut. When installed on the penetration plate 2, the limiting convex portion 13 is in close contact and cooperation with one side end face of the penetration plate 2 through the sealing ring 5; the nut abuts against the other side end face of the penetration plate 2, thereby fastening the penetrator body 1 on the penetration plate 2.

[0054] According to some embodiments of the present invention, referring to Figures 1 - 3 , the penetrator body 1 is configured to pass through the penetration plate 2, and the penetrator body 1 has an anti-rotation portion 11, and the anti-rotation portion 11 is configured to be in anti-rotation cooperation with the penetration plate 2. Specifically, the outer ring of the penetrator body 1 may have a milled flat structure that cooperates with the penetration plate hole of the penetration plate 2. Or the shape of the penetration plate hole includes other non-rotating body shapes, and the penetrator body 1 has a portion that is anti-rotationally adapted to the corresponding portion of the penetration plate hole. In the scenario with a nut, it is more convenient to twist and tighten the nut.

[0055] According to an embodiment of the present invention, referring to Figures 1 - 4, the optical penetrator includes a penetrator body 1, a sealing ring 5, a ferrule 4, a single-head adapter 6, a guide sleeve 7, a tightening sleeve 8, and an internal optical fiber 3; the outer circle of the penetrator body 1 is milled flat and machined in a matching manner with the penetrator hole of the penetrator disk 2 that cooperates with the penetrator, preventing the optical fiber penetrator from rotating during the process of installing the penetrator on the penetrator disk 2 and facilitating installation; a small hole is provided on the axis of the penetrator body 1 to facilitate the penetration of the internal optical fiber 3. External threads are provided at both ends of the penetrator body 1, and counterbore holes 112 are respectively provided on the end faces of the external threads. The diameter of the counterbore holes 112 is slightly smaller than or equal to the diameter of the ferrule 4, and the counterbore holes 112 cooperate with the ferrule 4; an inner hole is provided on the axis of the ferrule 4, and the diameter of the inner hole is slightly larger than the outer diameter of the internal optical fiber 3. One end face of the ferrule 4 has a flared opening. The end with the flared opening is called the ferrule tail 41, and the other end without the flared opening is called the ferrule head 42; the maximum diameter of the flared opening is larger than the outer diameter of the internal optical fiber 3, and the internal optical fiber 3 can be conveniently inserted into the ferrule through-hole 21 from the flared opening; the two ferrule tails 41 are respectively installed in the counterbore holes 112 at both ends of the penetrator body 1, and the end faces of both ends of the internal optical fiber 3 are flush with the end faces of the ferrule heads 42. The sealing ring 5 is arranged at one end of the limit convex part 13 facing the connection nut of the penetrator body 1, which is beneficial for the limit convex part 13 to be in sealing cooperation with the end face of the penetrator disk 2 through the sealing ring 5. The connection head of the single-head adapter 6 can be set as a standard ST female connection head for realizing the cooperation with a standard ST male connection head. Among them, the transfer optical fiber can have a standard ST male connection head, and the standard ST male connection head can have the ferrule 4 in this embodiment, which will not be elaborated here. The other end of the single-head adapter 6 is provided with an internal thread, which cooperates with the external threads at both ends of the penetrator body 1. A guide sleeve 7 is installed inside the single-head adapter 6. The inner diameter of the guide sleeve 7 is slightly smaller than or equal to the outer diameter of the ferrule 4. The guide sleeve 7 is used to dock the ferrule 4 of the standard ST male connection head of the transfer optical fiber with the ferrules 4 installed at both ends of the penetrator body 1, ensuring that the coaxiality error of the docking of the two ferrules 4 is relatively low. One end of the guide sleeve 7 contacts the internal structure of the single-head adapter 6, and the other end of the guide sleeve 7 contacts the tightening sleeve 8. The tightening sleeve 8 can prevent the guide sleeve 7 from slipping out of the single-head adapter 6.

[0056] In addition, the embodiment of the present invention also provides an optical fiber sensing temperature measurement device based on the optical fiber penetrator (not shown in the figure). The optical fiber sensing temperature measurement device includes the optical fiber penetrator provided in the above embodiment.

[0057] In some embodiments, the optical fiber sensing temperature measurement device may include an optical fiber temperature measurement probe arranged in the transformer winding, an optical fiber temperature demodulator located outside the transformer, a transition optical fiber, etc.; in an application scenario with a through-disk, the through-disk is installed on the side wall of the transformer, the optical fiber penetrator is inserted through the through-disk, and the optical fiber temperature demodulator and the optical fiber penetrator can be connected through a transition optical fiber; the optical fiber penetrator and the optical fiber temperature measurement probe can be connected through a transition optical fiber, or the transition optical fiber of the optical fiber temperature measurement probe can be directly connected to the optical fiber penetrator, and the details will not be elaborated here.

[0058] Any reference to "one embodiment", "embodiment", "illustrative embodiment", etc. means that the specific components, structures or features described in connection with the embodiment are included in at least one embodiment of the present invention. Such illustrative expressions in various places in this specification do not necessarily refer to the same embodiment. Moreover, when describing specific components, structures or features in connection with any embodiment, it is claimed that implementing such components, structures or features in combination with other embodiments falls within the scope of those skilled in the art.

[0059] Although the specific embodiments of the present invention have been described in detail with reference to multiple illustrative embodiments of the present invention, it must be understood that those skilled in the art can design various other improvements and embodiments, and these improvements and embodiments will fall within the spirit and scope of the principles of the present invention. Specifically, within the scope of the foregoing disclosure, drawings and claims, reasonable variations and improvements can be made in the arrangement of components and / or sub-combinations of layouts without departing from the spirit of the present invention. In addition to variations and improvements in components and / or layouts, the scope is defined by the appended claims and their equivalents.

Claims

1. An optical fiber penetrator, characterized in that, include: A through-hole body is provided with an optical fiber through-hole and a countersunk hole connected to the optical fiber through-hole, and a connecting portion is formed at the end of the through-hole body; A ferrule, wherein the countersunk hole is provided with the ferrule, and the ferrule has a ferrule through hole connected to the optical fiber through hole; A built-in optical fiber is inserted into the ferrule through hole and the optical fiber through hole; A single-end adapter, the coupling portion is connected to the single-end adapter, the single-end adapter has a connector portion, and the connector portion is configured to be connected to a switching optical fiber so that the built-in optical fiber is connected to the switching optical fiber.

2. The optical fiber penetrator according to claim 1, wherein The optical fiber penetration device also includes: A guide sleeve is inserted into the single-end adapter, one end of the guide sleeve is inserted with the ferrule, the ferrule and the guide sleeve are transitionally fitted or interference fit, and the other end of the guide sleeve is configured to be inserted with the switching optical fiber.

3. The optical fiber penetrator according to claim 2, wherein, The optical fiber penetration device also includes: The expansion sleeve is fixed to the single-end adapter, and the insert passes through the expansion sleeve and is interference-fitted with the expansion sleeve.

4. The optical fiber feedthrough according to claim 1, characterized in that: The connecting portion is provided with an external thread, the single-end adapter is provided with an internal thread, and the connecting portion is threadedly connected to the single-end adapter; or, The connecting part is provided with an internal thread, the single-end adapter is provided with an external thread, and the connecting part is threadedly connected with the single-end adapter.

5. The optical fiber feedthrough according to claim 1, characterized in that: The through-device body is configured to be penetrated on a through-disk, and the through-device body has an anti-rotation portion, and the anti-rotation portion is configured to cooperate with the through-disk in an anti-rotation manner.

6. The optical fiber penetrator according to claim 1, wherein, The connector is one of an ST connector, an SC connector, an FC connector, and an LC connector; and / or, The optical fiber through-hole further comprises a sealing filler, wherein the sealing filler is filled between the ferrule and the countersunk hole and / or the sealing filler is filled between the built-in optical fiber and the optical fiber through-hole.

7. The optical fiber penetrator according to claim 1, characterized in that, The ferrule comprises a ferrule tail portion and a ferrule head portion, and the ferrule tail portion is installed in the countersunk hole; Among them, the end face of the built-in optical fiber is flush with the end face of the core head; and / or the core through hole includes a reduced diameter hole section penetrating the core tail, and the aperture of the reduced diameter hole section decreases in the direction from the core tail to the core head; and / or the edge of the core head is chamfered to form a chamfered portion.

8. The optical fiber penetrator according to claim 1, characterized in that, The fiber penetration device body further includes a middle portion and a limiting convex portion, wherein the middle portion is located between the two connecting portions, and the limiting convex portion is arranged around the outer circumference of the middle portion. The fiber penetration device further includes: a nut configured to be threadedly connected to the intermediate portion; A sealing ring is arranged at one end of the limiting protrusion facing the nut.

9. The optical fiber penetrator according to any one of claims 1-8, characterized in that, There are two countersunk holes and two single-end adapters, the two countersunk holes are connected one-to-one with the two ends of the optical fiber perforation, the two ends of the through-hole body are respectively formed with the connecting parts, and each single-end adapter is respectively connected one-to-one with each connecting part; and / or the built-in optical fiber is a bare fiber.

10. An optical fiber sensing temperature measurement device, characterized in that, An optical fiber through-hole comprising the optical fiber through-hole according to any one of claims 1 to 9.

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