Optical fiber protection kit for an internal pressure acquisition station

Abstract

The utility model relates to optical fiber detection equipment technical field, especially optical fiber protection kit of inner pressure collection platform, the utility model discloses a bottom fixed interface, clamping groove, deposit mouth, detection flow channel, joint suite, linear flow channel, open mouth and protection cover, clamping groove is opened in bottom fixed interface top, deposit mouth is opened in the inner wall of clamping groove, and detection flow channel is penetrated in the bottom of bottom fixed interface, and joint suite is located in bottom fixed interface top, and the outer edge of joint suite is matched with the inner diameter of clamping groove, and linear flow channel is penetrated in the center axis of joint suite, and open mouth is opened in the bottom of linear flow channel, and the bottom of protection cover is placed in deposit mouth, and protection cover is the conical shape of upper narrow and lower wide, and protection cover is made of elastic plastic material, and joint suite is compressed and tight protection kit through open mouth, and the inner wall of sealed flow channel is close to the outer surface of optical fiber, forms pressure buffer area, when the container generates high pressure, and protection cover can carry out pressure buffering, and it is convenient for the data acquisition of optical fiber under various pressures.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber testing equipment technology, and in particular to an optical fiber protection kit for an internal pressure acquisition station. Background Technology

[0002] An optical fiber internal pressure testing platform is an experimental device used to test and study the performance of optical fibers under varying internal pressure. It is commonly used in fields such as optical fiber communication, sensors, and materials science to evaluate the transmission characteristics, mechanical properties, and pressure resistance of optical fibers under pressure. Its main functions include simulating different environmental conditions, testing the response of optical fibers to changes in internal pressure, and measuring changes in signal attenuation and transmission rate under different internal pressures. It also involves analyzing the strain characteristics of optical fibers under pressure changes to understand their mechanical toughness. Furthermore, it studies the mechanical behavior of different types of optical fibers under internal pressure, aiding in the development of higher-performance optical fibers. Finally, it develops pressure-change-based optical fiber sensors, which are widely used in structural health monitoring, industrial inspection, and other fields, providing data support for the further application and development of optical fiber technology.

[0003] However, existing equipment often encounters the following problems during use:

[0004] Traditional internal pressure fiber optic data acquisition stations measure the internal pressure of optical fibers by connecting a thin optical fiber through an interface and lowering it into a high-pressure container to apply pressure. However, due to the high rigidity of the existing interface (such as metal sleeves), stress concentration is easily caused. When measuring thin optical fibers with a diameter of less than 5mm, high internal pressure can easily crush and break the fiber, thus terminating the data measurement experiment. Utility Model Content

[0005] The main objective of this invention is to provide a fiber optic protection kit for an internal pressure acquisition station. This effectively solves the problem mentioned in the background art: existing traditional internal pressure fiber optic data acquisition stations, when measuring the internal pressure data of optical fibers, involve connecting thin optical fibers through an interface and placing them into a high-pressure container to apply pressure. However, due to the high rigidity of existing interfaces (such as metal sleeves), stress concentration easily occurs. When measuring thin optical fibers with a diameter less than 5mm, high internal pressure can easily cause the fiber to break, thus terminating the data measurement experiment. The conical protective sleeve designed in this invention has its bottom end embedded in the placement opening of the bottom fixing interface. Its extension coincides with the bearing opening of the detection channel, and the snap-fit ​​kit is tightened by pressure through the open opening, ensuring that the inner wall of the sealed channel is tightly against the outer surface of the optical fiber, forming a pressure buffer area. The silicone rubber material of the conical protective sleeve undergoes nonlinear deformation under high pressure, with the narrow end being pressurized first and the pressure transmitted to the wide end. The pressure is then transmitted from the conical side surface to the shape-fitting open opening, thus forming a pressure gradient buffer, making the pressurized part an integral part of the interface, effectively preventing brittle fracture.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A fiber optic protection kit for an internal pressure acquisition station includes:

[0008] Bottom fixed interface;

[0009] The card slot is located above the bottom fixing interface, and the opening of the card slot extends to the outer wall of the bottom fixing interface.

[0010] A placement opening is provided on the inner wall of the slot;

[0011] A detection channel extends through the bottom end of the bottom fixing interface and is connected to the placement port;

[0012] A snap-fit ​​kit, located above the bottom fixing interface, wherein the outer edge of the snap-fit ​​kit matches the inner diameter of the slot;

[0013] A straight flow channel, which extends through the central axis of the snap-fit ​​assembly.

[0014] An opening is provided at the bottom end of the straight flow channel and is connected to the straight flow channel.

[0015] A protective cover, the bottom of which is placed in the placement opening, the protective cover being a cone shape that is narrower at the top and wider at the bottom, and the protective cover being made of elastic plastic material.

[0016] Also includes:

[0017] A sealed flow channel is provided inside the protective sleeve, which passes through its central axis, and the inner diameter of the sealed flow channel is 5mm.

[0018] An extension port is provided at the bottom end of the central shaft of the sealed flow channel;

[0019] An outer nut, threaded onto the outer surface of the snap-fit ​​assembly, is used to lock the snap-fit ​​assembly to the bottom fixing interface;

[0020] The bearing port is located at the top of the detection channel and coincides with the extension port.

[0021] The protective sleeve has a taper ratio of 1:2 and is made of silicone rubber.

[0022] The inner diameter of the straight flow channel of the snap-fit ​​kit is three times the outer diameter of the optical fiber, and the cross-section of the opening is trapezoidal.

[0023] The inner wall of the placement opening of the bottom fixing interface is provided with an annular groove, and the outer wall of the bottom end of the conical protective sleeve is provided with a corresponding flange. Axial positioning is achieved by the engagement of the flange and the groove.

[0024] The inner surface of the opening corresponds to and fits into the outer surface of the protective sleeve.

[0025] Compared with existing technologies, the beneficial effects of this utility model are as follows: The bottom end of the conical protective sleeve designed in this utility model is embedded in the placement port of the bottom fixing interface, and its extension port coincides with the bearing port of the detection flow channel. Furthermore, the snap-fit ​​kit tightens the protective kit by applying pressure through the open end, ensuring that the inner wall of the sealed flow channel is tightly attached to the outer surface of the optical fiber, forming a pressure buffer area. The silicone rubber material of the conical protective sleeve undergoes nonlinear deformation under high pressure, with the narrow end being pressurized first and the pressure transmitted to the wide end. This pressure is then transmitted from the conical side surface to the shape-fitting open end, thus forming a pressure gradient buffer, making the pressurized part a unified interface, effectively preventing brittle fracture. Attached Figure Description

[0026] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0027] Figure 1 This is a schematic diagram of the partial explosion structure of this utility model.

[0028] Figure 2 This is a schematic diagram of the overall shape of the present utility model.

[0029] Figure 3 This is a schematic diagram of the protective sleeve of this utility model.

[0030] The following are the labels in the diagram: 1. Bottom fixing interface; 2. Slot; 3. Placement port; 4. Detection channel; 5. Snap-fit ​​kit; 6. Straight channel; 7. Opening; 8. Protective sleeve; 9. Sealed channel; 10. Extension port; 11. Outer nut; 12. Bearing port. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] like Figure 1-3 As shown, this utility model provides an optical fiber protection kit for an internal pressure acquisition station. The optical fiber protection kit for the internal pressure acquisition station includes a bottom fixing interface 1, a slot 2, a placement port 3, a detection flow channel 4, a snap-fit ​​kit 5, a straight flow channel 6, an opening 7, and a protective sleeve 8.

[0034] As the base of the entire kit, the bottom fixing interface 1 is mechanically fixed to the outer surface of the high-pressure vessel by welding or bolts to ensure structural stability; the slot 2 is used to precisely position and snap the kit 5 to prevent installation misalignment. The slot 2 is opened above the bottom fixing interface 1, and the opening of the slot 2 extends to the outer wall of the bottom fixing interface 1; the placement port 3 is opened on the inner wall of the slot 2; the placement port 3 is used to accommodate the bottom end of the protective sleeve 8, and the annular groove fits into the flange of the protective sleeve 8 to achieve axial limiting and prevent the protective sleeve 8 from being pushed out under high pressure; the detection channel 4 runs through the bottom end of the bottom fixing interface 1 and is connected to the placement port 3;

[0035] Preferably, the snap-fit ​​kit 5 is located above the bottom fixing interface 1. The snap-fit ​​kit 5 includes a straight flow channel 6 and an opening 7. The straight flow channel 6 passes through the central axis of the snap-fit ​​kit 5, and the opening 7 is opened at the bottom end of the straight flow channel 6. The opening 7 is connected to the straight flow channel 6, and the outer edge of the snap-fit ​​kit 5 matches the inner diameter of the slot 2. The inner diameter of the straight flow channel 6 of the snap-fit ​​kit 5 is 3 times the outer diameter of the optical fiber, and the cross-section of the opening 7 is trapezoidal. The inner diameter of the straight flow channel 6 is 3 times the outer diameter of the optical fiber, providing ample space for cable threading and reducing installation difficulty. The trapezoidal opening 7 fits against the outer surface of the protective sleeve 8, guiding the protective sleeve 8 to shrink evenly.

[0036] In this embodiment, the bottom end of the protective sleeve 8 is placed in the placement opening 3. The protective sleeve 8 is a cone shape, narrower at the top and wider at the bottom, and is made of elastic plastic material. The taper ratio of the protective sleeve 8 is 1:2, and its material is silicone rubber. The inner surface of the opening 7 corresponds to and fits the outer surface of the protective sleeve 8. The cone shape with a taper ratio of 1:2, combined with the elasticity of silicone rubber, forms a gradient pressure buffer layer, dispersing local high pressure to a larger contact area. According to Pascal's law of hydrostatics, pressure is uniformly transmitted in an elastic medium. The cone structure reduces the unit pressure by expanding the force-bearing area, as shown by the formula: (P = F / A). The silicone rubber material of the cone-shaped protective sleeve 8 undergoes nonlinear deformation under high pressure, with the top of the narrow end being compressed first and the pressure being transmitted to the bottom of the wide end. As the cross-sectional area gradually increases, the unit area pressure decreases exponentially, thus forming a pressure gradient buffer. The hyperelastic behavior of silicone rubber can absorb deformation energy and prevent brittle fracture.

[0037] Preferably, the protective sleeve 8 forms an adaptive dynamic seal between the snap-fit ​​kit 5 and the bottom fixing interface 1 through radial contraction guided by conical geometry and the superelastic deformation of silicone rubber. Its core value lies in transforming the "rigid confrontation" of traditional seals into "elastic cooperation," which not only ensures the reliability of the seal under extreme pressure but also avoids damage to the optical fiber due to excessive compression.

[0038] The inner wall of the placement opening 3 of the bottom fixing interface 1 is provided with an annular groove, and the outer wall of the bottom end of the conical protective sleeve 8 is provided with a corresponding flange. Axial positioning is achieved by the engagement of the flange and the groove. A sealing flow channel 9 is opened inside the protective sleeve 8, passing through its central axis. The inner diameter of the sealing flow channel 9 is 5mm. The bottom end of the central axis of the sealing flow channel 9 is provided with an extension port 10. The outer nut 11 is threaded to the outer surface of the snap-fit ​​kit 5 to lock the snap-fit ​​kit 5 and the bottom fixing interface 1. The design of the sealing flow channel 9 allows the optical fiber to maintain a good seal with the outside world when passing through the protective sleeve 8, preventing gas or liquid from seeping in under high pressure and affecting the normal operation of the acquisition device. The extension port 10 coincides with the bearing port 12 of the detection flow channel 4 to ensure the continuous effectiveness of the sealing area. The bearing port 12 is opened at the top of the detection flow channel 4, and the bearing port 12 coincides with the extension port 10.

[0039] It should be noted that, in use, the fiber optic protection kit for the internal pressure acquisition station designed in this utility model involves installing the bottom fixing interface 1 on the outer surface of the high-pressure container, inserting the fiber optic cable to be tested into the straight flow channel 6 of the snap-fit ​​kit 5, and after the insertion end of the fiber optic cable has completely passed through the opening 7, aligning the sleeve interface of the conical protective sleeve 8 (narrower at the top and wider at the bottom) with the insertion end of the fiber optic cable, allowing the fiber optic cable to slowly pass through the 5mm diameter sealed flow channel 9. Then, insert the bottom end of the conical protective sleeve 8 into the placement opening 3 of the bottom fixing interface 1, ensuring that the bottom end of the protective sleeve 8 fits snugly against the inner diameter of the placement opening 3. The extension port 10 at the bottom of the protective sleeve 8 will coincide with the bearing port 12 of the detection channel 4. At this point, the optical fiber is lowered, allowing its insertion end to completely penetrate the detection channel 4 through the bearing port 12 and enter the high-pressure container. Finally, the snap-fit ​​kit 5 is lowered, ensuring its bottom outer diameter is fully inserted into the slot 2 of the bottom fixing interface 1. Under the pressure of the fitted opening 7, the plastic protective sleeve 8 gradually tightens from top to bottom until the inner wall of the sealed channel 9 is tightly against the outer surface of the optical fiber. Then, the outer nut is tightened, and the snap-fit ​​kit 5 is completely fixed to the bottom fixing interface 1. Once the internal pressure optical fiber acquisition stage begins to apply pressure, the conical structure of the protective sleeve 8 can form a buffer zone at the point where the optical fiber contacts the high-pressure environment. Through the action of the protective sleeve 8, pressure is dispersed from the surface of the optical fiber to a wider area, reducing localized stress on the optical fiber and thus reducing the risk of breakage. Furthermore, under external force, it can provide better support and buffering for the optical fiber, reducing fiber movement or breakage caused by vibration or external forces.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A fiber optic protection kit for an internal pressure acquisition station, characterized in that, include: Bottom fixing interface (1); The slot (2) is located above the bottom fixing interface (1), and the opening of the slot (2) extends to the outer wall of the bottom fixing interface (1). Placement opening (3), the placement opening (3) is opened on the inner wall of the card slot (2); The detection channel (4) extends through the bottom end of the bottom fixing interface (1) and is connected to the placement port (3); A snap-fit ​​kit (5) is located above the bottom fixing interface (1), and the outer edge of the snap-fit ​​kit (5) matches the inner diameter of the slot (2); A straight flow channel (6) extends through the central axis of the snap-fit ​​assembly (5). An opening (7) is provided at the bottom end of the straight flow channel (6) and is connected to the straight flow channel (6); The protective sleeve (8) is placed at the bottom of the placement opening (3). The protective sleeve (8) is a cone shape that is narrow at the top and wide at the bottom. The protective sleeve (8) is made of elastic plastic material.

2. The fiber optic protection kit for an internal pressure acquisition station according to claim 1, characterized in that, Also includes: A sealing flow channel (9) is provided inside the protective sleeve (8) and passes through its central axis. The inner diameter of the sealing flow channel (9) is 5 mm. Extension port (10), the extension port (10) is provided at the bottom of the central shaft of the sealing flow channel (9); The outer nut (11) is threaded onto the outer surface of the snap-fit ​​kit (5) and is used to lock the snap-fit ​​kit (5) and the bottom fixing interface (1); The bearing port (12) is located at the top of the detection channel (4) and coincides with the extension port (10).

3. The fiber optic protection kit for an internal pressure acquisition station according to claim 1, characterized in that, The protective sleeve (8) has a taper ratio of 1:2 and is made of silicone rubber.

4. The fiber optic protection kit for an internal pressure acquisition station according to claim 1, characterized in that, The inner diameter of the straight flow channel (6) of the snap-fit ​​kit (5) is three times the outer diameter of the optical fiber, and the cross-section of the opening (7) is trapezoidal.

5. The fiber optic protection kit for an internal pressure acquisition station according to claim 1, characterized in that, The inner wall of the placement opening (3) of the bottom fixing interface (1) is provided with an annular groove, and the outer wall of the bottom end of the conical protective sleeve (8) is provided with a corresponding flange. Axial positioning is achieved by the fitting of the flange and the groove.

6. The fiber optic protection kit for an internal pressure acquisition station according to claim 1, characterized in that, The inner surface of the opening (7) is in contact with the outer surface of the protective sleeve (8).

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