A fiber grating sensor quick plug-in connector assembly convenient for maintenance and replacement

Abstract

The utility model discloses a kind of fiber grating sensor quick plug-in connector assembly convenient to overhaul and replace, including mounting block, the side of mounting block is equipped with slot;Plug-in connector, plug-in connector can be inserted into slot;Fixed ring, fixed ring is used to fixedly install in the outside of fiber grating sensor, and with plug-in connector fixed connection;First locking member and second locking member are arranged in the inside of plug-in connector, first locking member includes fixedly installed in the guide rail of plug-in connector inside, slidingly installed in the sliding plate between guide rail, and fixedly installed in the locking block of sliding plate side, second locking member includes fixedly installed in the guide block and restriction block of plug-in connector inside, movable block connected with plug-in connector by spring, and with movable block fixed connection locking rod. Through a set of external operating element, the two sets of independent locking members in inside are synchronously controlled, realize firm locking with mounting block and quick separation.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic sensing technology, specifically to a quick-plug connector assembly for fiber optic grating sensors that is easy to inspect and replace. Background Technology

[0002] Fiber Bragg grating (FBG) sensors are widely used in complex environments such as structural health monitoring, oil and gas well monitoring, and boiler heating surface monitoring due to their advantages such as resistance to electromagnetic interference, corrosion resistance, and ease of forming sensor networks. In these applications, sensors need to operate stably for extended periods, but there is also a need for them to be damaged or periodically calibrated. Currently, many FBG sensors are fixed to monitoring points by direct bonding or welding, such as the scheme disclosed in Chinese patent CN202023094956.2. While this fixing method provides a secure connection, disassembly is extremely difficult once the sensor malfunctions, often requiring damage to the original structure and even the sensor leads. This results in high repair costs and long repair times, hindering the rapid replacement and reuse of the sensors.

[0003] Therefore, there is an urgent need in this field for a fiber Bragg grating sensor connection solution that can both ensure connection reliability and enable rapid plugging and unplugging and replacement. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a quick-plug connector assembly for fiber Bragg grating sensors that is easy to inspect and replace. Through an external operating component, two sets of independent locking components inside are synchronously controlled to achieve a firm lock and quick separation from the mounting block.

[0005] According to the technical solution provided by the embodiments of this utility model, a quick-connect connector assembly for a fiber Bragg grating sensor that is easy to inspect and replace includes a mounting block with a slot on its side; a plug-in connector that can be inserted into the slot; a retaining ring for fixing it to the outside of the fiber Bragg grating sensor and for fixing it to the plug-in connector; and a first locking member and a second locking member disposed inside the plug-in connector. The first locking member includes a guide rail fixedly installed inside the plug-in connector, a sliding plate slidably installed between the guide rails, and a component fixedly installed on the sliding plate. The side locking block, the second locking member includes a guide block and a limiting block fixedly installed inside the plug-in connector, a movable block connected to the plug-in connector by a spring, and a locking rod fixedly connected to the movable block; the operating member is disposed outside the plug-in connector, the operating member includes a connecting seat fixedly connected to the outside of the plug-in connector, a screw fixedly connected between the connecting seat and the plug-in connector, an operating screw sleeve screwed to the outside of the screw, an H-shaped bracket slidably sleeved on the outside of the screw, and a first drive rod and a second drive rod fixedly connected to the H-shaped bracket.

[0006] In this invention, the mounting block has mounting holes on its side, and the plug-in connector has an internal cavity.

[0007] In this invention, the side of the plug-in connector is provided with a first opening for the locking block to pass through, the interior of the mounting block is provided with a first slot adapted to the locking block, and the end of the locking block passes through the first opening and extends into the first slot.

[0008] In this invention, the end of the sliding plate is a T-shaped head, and the inside of the guide rail is provided with a first sliding groove that is adapted to the T-shaped head, and the T-shaped head is embedded in the first sliding groove.

[0009] In this invention, the locking rod slides in contact with the guide block, and the guide block has a second sliding groove adapted to the locking rod inside, through which the locking rod passes.

[0010] In this invention, the side of the plug-in connector is provided with a second opening for the locking rod to pass through, and the interior of the mounting block is provided with a second slot adapted to the locking rod. The end of the locking rod passes through the second opening and extends into the second slot.

[0011] In this utility model, the side of the H-shaped frame is provided with a through hole for the screw to pass through, the operating screw sleeve is located inside the H-shaped frame, the inner wall of the connecting seat is provided with a third sliding groove adapted to the H-shaped frame, and the end of the H-shaped frame is embedded in the third sliding groove.

[0012] In this invention, the side of the plug-in connector is provided with a third opening for the first drive rod to pass through, and the side of the plug-in connector is provided with a fourth opening for the second drive rod to pass through, and the second drive rod abuts against the movable block.

[0013] In this invention, there is a gap between the first drive rod and the guide rail, a docking post is fixedly installed inside the first drive rod, and a guide groove adapted to the docking post is provided on the side of the sliding plate, with the end of the docking post extending into the guide groove.

[0014] In this invention, the guide groove is an inclined structure, which allows the axial movement of the first drive rod to be converted into the linear movement of the sliding plate through the cooperation between the docking post and the guide groove.

[0015] In summary, the beneficial effects of this utility model are as follows: 1. Double locking for reliable connection: Through the combined action of the first and second locking mechanisms, mechanical interlocking is achieved from different directions, ensuring the reliability and stability of the connection; 2. One-button operation, quick plugging and unplugging: By rotating a single operating screw, two drive rods can be driven simultaneously, thereby simultaneously releasing or activating the double lock, realizing the quick operation of "one turn to release, one turn to lock", which greatly improves the efficiency of maintenance and replacement. 3. Compact structure and wide applicability: All locking and operating components are integrated into the plug-in connector and its surroundings, resulting in a compact overall structure that does not occupy too much space and can adapt to various narrow or complex installation environments. Attached Figure Description

[0016] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure at the connection point between the present invention and the fiber optic grating sensor; Figure 2 This is a side view of the connection between the mounting block, plug-in connector, first locking element, second locking element, operating element, and docking post of this utility model. Figure 3 This is a top view of the sliding plate of this utility model. Figure 4 This is a schematic diagram of the present invention in the unlocked state.

[0017] The following are the labeling elements in the diagram: 1. Mounting block; 2. Plug-in connector; 3. Retaining ring; 4. Guide rail; 5. Sliding plate; 6. Locking block; 7. Guide block; 8. Limiting block; 9. Spring; 10. Movable block; 11. Locking rod; 12. Connecting seat; 13. Screw; 14. Operating screw sleeve; 15. H-frame; 16. First drive rod; 17. Second drive rod; 18. Docking post; 19. Fiber optic grating sensor. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0019] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0020] Please refer to Figures 1 to 3 A quick-connect connector assembly for a fiber Bragg grating sensor, facilitating maintenance and replacement, includes a mounting block 1 with a slot on its side; a quick-connect connector 2, which can be inserted into the slot; a retaining ring 3, which is used to fix the fiber Bragg grating sensor 19 to the outside and is fixedly connected to the quick-connect connector 2; a first locking member and a second locking member are disposed inside the quick-connect connector 2. The first locking member includes a guide rail 4 fixedly installed inside the quick-connect connector 2, a sliding plate 5 slidably installed between the guide rails 4, and a locking block 6 fixedly installed on the side of the sliding plate 5. The second locking member includes a locking block 6 fixedly installed on the quick-connect connector. The head 2 contains a guide block 7 and a limiting block 8. The limiting block 8 is used to limit the movement stroke of the movable block 10. The movable block 10 is connected to the plug-in connector 2 via a spring 9, and a locking rod 11 is fixedly connected to the movable block 10. The operating component is located outside the plug-in connector 2. The operating component includes a connecting seat 12 fixedly connected to the outside of the plug-in connector 2, a screw 13 fixedly connected between the connecting seat 12 and the plug-in connector 2, an operating screw sleeve 14 screwed to the outside of the screw 13, an H-shaped frame 15 slidably sleeved on the outside of the screw 13, and a first drive rod 16 and a second drive rod 17 fixedly connected to the H-shaped frame 15.

[0021] like Figure 1 and Figure 2As shown, the mounting block 1 has a mounting hole (not shown in the figure) on its side, and the plug-in connector 2 has an internal cavity. The plug-in connector 2 has a first opening on its side for the locking block 6 to pass through, which facilitates the passage of the locking block 6. The mounting block 1 has a first slot that is adapted to the locking block 6, and the end of the locking block 6 passes through the first opening and extends into the first slot.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown, the end of the sliding plate 5 is a T-shaped head. The guide rail 4 has a first groove that matches the T-shaped head. The T-shaped head is embedded in the first groove, allowing the sliding plate 5 to slide stably up and down along the guide rail 4. The locking rod 11 slides in contact with the guide block 7. The guide block 7 has a second groove that matches the locking rod 11. The locking rod 11 passes through the second groove to ensure the straightness of its movement trajectory.

[0023] like Figure 1 and Figure 2 As shown, the plug-in connector 2 has a second opening on its side for the locking rod 11 to pass through, facilitating the passage of the locking rod 11. The mounting block 1 has a second slot inside that matches the locking rod 11, and the end of the locking rod 11 passes through the second opening and extends into the second slot. The H-shaped bracket 15 has a through hole on its side for the screw 13 to pass through. The operating screw sleeve 14 is located inside the H-shaped bracket 15. The inner wall of the connecting seat 12 has a third sliding groove that matches the H-shaped bracket 15. The end of the H-shaped bracket 15 is embedded in the third sliding groove, thereby restricting its rotation and allowing it to only translate axially along the screw 13.

[0024] like Figure 1 and Figure 2 As shown, the plug-in connector 2 has a third opening on its side for the passage of the first drive rod 16, facilitating the passage of the first drive rod 16. The plug-in connector 2 also has a fourth opening on its side for the passage of the second drive rod 17, facilitating the passage of the second drive rod 17. The second drive rod 17 abuts against the movable block 10. A gap exists between the first drive rod 16 and the guide rail 4. A mating post 18 is fixedly installed inside the first drive rod 16. The sliding plate 5 has a guide groove on its side that matches the mating post 18. The guide groove is inclined, and the end of the mating post 18 extends into the guide groove, allowing the axial movement of the first drive rod 16 to be converted into linear movement of the sliding plate 5 through the cooperation of the mating post 18 and the guide groove.

[0025] Working process: First, use bolts to install the mounting block 1 on the monitoring point. Insert the fiber optic grating sensor 19 with the plug-in connector 2 into the slot of the mounting block 1. Then, rotate the operating sleeve 14 clockwise. Since the operating sleeve 14 is threadedly connected to the screw 13, and the H-shaped frame 15 is restricted to translation within the third sliding groove of the connecting seat 12, the rotation operation will drive the H-shaped frame 15, along with the first drive rod 16 and the second drive rod 17, to move towards the plug-in connector 2. The first drive rod 16 pushes inward, and its end docking post 18 slides in the inclined guide groove of the sliding plate 5. Due to the inclined design of the guide groove, the horizontal movement of the docking post 18 is converted into the vertical downward movement of the sliding plate 5. The sliding plate 5 slides down along the guide rail 4, pushing the locking block 6 on it through the first opening, and finally firmly locking into the first slot of the mounting block 1. Almost simultaneously, upon completion of the first locking, the second drive rod 17 pushes inward, directly pressing against the movable block 10 and compressing the spring 9. The movement of the movable block 10 causes the locking rod 11 to slide along the second groove of the guide block 7, allowing it to pass through the second opening and engage in the second slot of the mounting block 1, thus completing the second locking and ensuring the reliability and stability of the connection. When the sensor needs repair or replacement due to a malfunction, simply rotate the operating sleeve 14 counterclockwise to drive the H-shaped bracket 15 to move outward, causing the first drive rod 16 to move outward. Through the transmission of the docking post 18 and the guide groove, the sliding plate 5 is moved upward, the locking block 6 exits from the first slot, and the second drive rod 17 moves outward, releasing the pressure on the movable block 10. The compressed spring 9 quickly resets, pushing the movable block 10 and the locking rod 11 back to their original positions. The locking rod 11 exits from the second locking groove, and both locking mechanisms are released (as shown). Figure 4 As shown in the figure, the plug-in connector 2, along with the sensor, can be easily pulled out of the mounting block 1, realizing a quick operation of "loosening with one turn and locking with one turn", which greatly improves the efficiency of maintenance and replacement.

[0026] The above description is merely a preferred embodiment of this utility model and an explanation of the technical principles and solutions employed. Furthermore, the scope of this invention is not limited to the specific combinations of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this utility model.

Claims

1. A quick-plug connector assembly for fiber Bragg grating sensors that is easy to inspect and replace, characterized in that: Includes a mounting block (1), the side of which is provided with a slot; A plug-in connector (2) is inserted into the slot. Fixing ring (3), the fixing ring (3) is used to fix the outer side of the fiber optic grating sensor (19) and is fixedly connected to the plug-in connector (2); The first locking member and the second locking member are disposed inside the plug-in connector (2). The first locking member includes a guide rail (4) fixedly installed inside the plug-in connector (2), a sliding plate (5) slidably installed between the guide rails (4), and a locking block (6) fixedly installed on the side of the sliding plate (5). The second locking member includes a guide block (7) and a limiting block (8) fixedly installed inside the plug-in connector (2), a movable block (10) connected to the plug-in connector (2) by a spring (9), and a locking rod (11) fixedly connected to the movable block (10). An operating component is disposed outside the plug-in connector (2). The operating component includes a connecting seat (12) fixedly connected to the outside of the plug-in connector (2), a screw (13) fixedly connected between the connecting seat (12) and the plug-in connector (2), an operating sleeve (14) screwed to the outside of the screw (13), an H-shaped frame (15) slidably sleeved on the outside of the screw (13), and a first drive rod (16) and a second drive rod (17) fixedly connected to the H-shaped frame (15).

2. The quick-plug connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The mounting block (1) has mounting holes on its side, and the plug-in connector (2) has an internal cavity.

3. The quick-connect connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The plug-in connector (2) has a first opening on its side for the locking block (6) to pass through. The mounting block (1) has a first slot inside that is adapted to the locking block (6). The end of the locking block (6) passes through the first opening and extends into the first slot.

4. The quick-connect connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The end of the sliding plate (5) is a T-shaped head, and the inside of the guide rail (4) is provided with a first groove that is adapted to the T-shaped head, and the T-shaped head is embedded in the first groove.

5. The quick-connect connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The locking rod (11) slides in contact with the guide block (7). The guide block (7) has a second groove inside that is adapted to the locking rod (11). The locking rod (11) passes through the second groove.

6. The quick-plug connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The plug-in connector (2) has a second opening on its side for the locking rod (11) to pass through. The mounting block (1) has a second slot inside that is adapted to the locking rod (11). The end of the locking rod (11) passes through the second opening and extends into the second slot.

7. The quick-connect connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The side of the H-shaped frame (15) is provided with a through hole for the screw (13) to pass through. The operating screw sleeve (14) is located inside the H-shaped frame (15). The inner wall of the connecting seat (12) is provided with a third sliding groove that is adapted to the H-shaped frame (15). The end of the H-shaped frame (15) is embedded in the third sliding groove.

8. The quick-plug connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: The plug-in connector (2) has a third opening on its side for the first drive rod (16) to pass through, and a fourth opening on its side for the second drive rod (17) to pass through. The second drive rod (17) abuts against the movable block (10).

9. The quick-connect connector assembly for a fiber Bragg grating sensor, which is easy to inspect and replace, as described in claim 1, is characterized in that: There is a gap between the first drive rod (16) and the guide rail (4). A docking post (18) is fixedly installed inside the first drive rod (16). The sliding plate (5) has a guide groove on its side that is adapted to the docking post (18). The end of the docking post (18) extends into the guide groove.

10. A quick-plug connector assembly for a fiber Bragg grating sensor, facilitating maintenance and replacement, as described in claim 9, characterized in that: The guide groove is an inclined structure, which allows the axial movement of the first drive rod (16) to be converted into the linear movement of the sliding plate (5) through the cooperation of the docking post (18) and the guide groove.

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