Novel optical fiber mutual inductor
By introducing friction resistance and clamping frame structure between the connecting disk and the rotating disk into the optical fiber transformer, the problem of cable deviation in high wind environments is solved, the accuracy and stability of cable measurement are achieved, and the reliability of current detection is ensured.
Patent Information
- Application Number
- CN202510827672.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-20
- Publication Date
- 2025-08-12
AI Technical Summary
Existing fiber optic transformers have cable shaking in high wind environments that lead to offset, affecting measurement accuracy, and cannot effectively prevent cable bending or stretching, resulting in inaccurate monitoring results.
A new fiber optic transformer was designed to increase the difficulty of positioning the cable at the housing through the friction resistance between the connecting disk and the rotating disk and the clamping frame structure, and use the pressure sensor to feedback the cable offset information to ensure measurement accuracy; the connecting rod structure ensures that the cable moves horizontally when it is tensioned, reducing the influence of tension; the second clamping block and the first clamping block cooperate with the straightening cable to maintain the stable cable shape.
It improves the accuracy of the cable measurement results, reduces the probability of the cable being pulled out, ensures the accuracy of the cable state judgment and the stability of current detection, and reduces the impact of the external environment on the measurement.
Smart Images
Figure CN120468482A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of mutual inductors, and in particular to a novel optical fiber mutual inductor. Background Art
[0002] In modern power systems, accurate measurement of current and voltage is crucial to ensuring the stable operation of the power system. The working principle of existing fiber optic mutual inductors is based on the optical effect to convert current or voltage into measurable optical signal changes. Fiber optic mutual inductors are mainly divided into two categories: fiber optic current mutual inductors and fiber optic voltage mutual inductors.
[0003] When existing mutual inductors detect cables, they simply pass the cables through the middle hole of the mutual inductor. However, some cables need to be installed at high altitudes. Once there is a strong wind outside, the cables will shake, causing a relative offset between the cables and the mutual inductor. The offset will cause the cables to bend or stretch, resulting in changes in the optical path monitored by the optical fiber mutual inductor, thereby affecting the stability of the phase or polarization state, and thus affecting the accuracy of the monitoring results. This will also cause the mutual inductor to detect and feedback incorrect current and voltage parameters, affecting personnel's judgment of the optical cable status. Summary of the Invention
[0004] In order to overcome the shortcomings pointed out in the above background technology, the present invention provides a novel optical fiber mutual inductor.
[0005] The technical implementation scheme of the present invention is: a new type of optical fiber mutual inductor, including: A housing, wherein a signal collector is installed on the housing, the housing is provided with symmetrically distributed connecting disks, the connecting disks are rotatably connected to rotating disks, a first elastic member is fixedly connected between the rotating disk and the adjacent connecting disk, the rotating disk is provided with circumferentially distributed first limiting grooves, the connecting disk is provided with circumferentially distributed first straight grooves, the first straight grooves of the connecting disk and the adjacent first limiting grooves are slidably connected to a first clamping frame; There are two arc-shaped racks, which are respectively fixed to the adjacent rotating disks. The shell is slidably connected to two straight racks that are respectively engaged with the adjacent arc-shaped racks. The straight racks are fixed with a fixed block. The shell is slidably connected with a sliding block. The shell is installed with two pressure sensors. The sliding block is used to squeeze the adjacent pressure sensors. The sliding block is threadedly connected with a connecting piece, and the connecting piece is used to connect the adjacent fixed block and the adjacent sliding block.
[0006] More preferably, the connecting disk and the opposite side of the adjacent rotating disk are both provided with friction surfaces for increasing the friction resistance when the rotating disk rotates.
[0007] More preferably, it further comprises: The first clamping blocks have the same number as the first clamping frames and are respectively fixed to adjacent first clamping frames.
[0008] More preferably, it further comprises: The connecting rod is fixed between the symmetrically distributed connecting plates and is slidably connected to the shell.
[0009] More preferably, it further comprises: The number of the second clamping frames is the same as that of the first clamping frames, the connecting disk is provided with circumferentially distributed second straight grooves, the second clamping frames are slidably connected to adjacent second straight grooves of the adjacent connecting disks, the rotating disk is provided with circumferentially distributed second limiting grooves, the first limiting grooves and the second limiting grooves on the same rotating disk are alternately distributed, the second clamping frames slide in adjacent second limiting grooves, the second clamping frames and the first clamping frames on the same connecting disk are alternately distributed, the second clamping frames are slidably connected to a second clamping block, and a second elastic member is fixed between the second clamping block and the adjacent second clamping frame.
[0010] More preferably, it further comprises: There are two retaining rings, which are respectively fixed to two sides of the shell, and the second clamping block is in contact with the adjacent retaining rings.
[0011] More preferably, a friction surface is provided on the side of the first clamping block facing the axis of the connecting disk and the side of the second clamping block facing the axis of the connecting disk.
[0012] More preferably, the length of the second clamping block is greater than that of the first clamping block, and there is a distance between the first clamping block and the retaining ring.
[0013] More preferably, a third elastic member is fixedly connected between the connecting disk and the shell, and the elastic coefficient of the third elastic member between the connecting disk and the shell is smaller than the elastic coefficient of the first elastic member between the rotating disk and the connecting disk.
[0014] More preferably, it further comprises: The shielding covers are provided with two symmetrically distributed ones and are respectively fixed between the adjacent connecting plates and the shell. The shielding covers are made of elastic material.
[0015] Compared with the existing technology, the present invention has the following advantages: 1. The present invention positions the cable through the first clamping block and then utilizes the relative rotation resistance between the connecting disk and the rotating disk to increase the difficulty of the cable deflecting near the housing, thereby improving the accuracy of the cable measurement results. When the cable deflects, the signal collector feedback indicates that the current parameter is abnormal due to the cable deviation, prompting personnel that the current abnormality is not caused by the cable itself, thereby ensuring the accuracy of personnel's judgment of the optical cable status; 2. The symmetrically distributed connection plates are moved synchronously by connecting rods. When the cable is subjected to tension, the cable is clamped by the first clamping block and the second clamping block, and the cable can move horizontally when under tension. This prevents the cable from deflecting in the housing hole, thereby reducing the impact of tension on the cable. This reduces the probability of cable breakage and ensures the stability of the detection parameters of this structure. 3. Through the relative displacement between the second clamping block and the first clamping block, the cable at the shell is straightened so that the cable entering the shell hole always remains straightened to ensure the stability of the cable shape, thereby improving the current stability of the section of the cable located in the shell hole, and ensuring the accuracy of this structure in detecting the current of the optical cable. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the rotating disk of the present invention; Figure 3 It is a three-dimensional structural cross-sectional view of the housing, connecting disk and rotating disk of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the connecting piece of the present invention; Figure 5 This is a sectional view of the three-dimensional structure of the shielding cover of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the retaining ring of the present invention.
[0017] The components in the accompanying drawings are marked as follows: 1. Shell, 2. Connecting plate, 3. Rotating plate, 301. First limiting groove, 302. Second limiting groove, 4. First clamping frame, 5. Arc-shaped rack, 6. Straight rack, 7. Fixed block, 8. Sliding block, 9. Pressure sensor, 10. Connecting piece, 11. First clamping block, 12. Connecting rod, 13. Second clamping frame, 1301. Second clamping block, 14. Retaining ring, 15. Shielding cover. DETAILED DESCRIPTION
[0018] The present invention will be further described below with reference to the accompanying drawings and examples.
[0019] A new type of optical fiber mutual inductor, such as Figures 1-4As shown, it includes: a shell 1, a sensing unit not shown in the figure (such as an optical sensor head for detecting current or an electro-optical crystal sensing unit for monitoring voltage) is arranged in the shell 1, a hole for the cable to pass through is arranged in the middle of the shell 1, the shell 1 is installed with a signal collector not shown in the figure, the shell 1 is provided with connecting disks 2 distributed symmetrically on the left and right, the connecting disks 2 are rotatably connected to the rotating disk 3, the connecting disks 2 and the opposite sides of the adjacent rotating disks 3 are provided with friction surfaces for increasing the friction resistance when the rotating disk 3 rotates, a first elastic member is fixed between the rotating disk 3 and the adjacent connecting disks 2, wherein the first elastic member between the rotating disk 3 and the adjacent connecting disks 2 is a tension spring, the rotating disk 3 is provided with a circumferentially distributed first limiting groove 301, the connecting disk 2 is provided with a circumferentially distributed first straight groove, the first straight groove of the connecting disk 2 and the adjacent first limiting groove 301 are slidably connected to a first clamping frame 4, the axis of the first straight groove is perpendicular to the axis of the shell 1, and the first limiting groove 301 is an arc groove. Figure 1 The right view is the reference of the rotation direction. When the rotating disk 3 rotates clockwise, the first limiting groove 301 squeezes the first clamping frame 4, so that the first clamping frame 4 moves in the direction away from the axis of the rotating disk 3. The first elastic member between the rotating disk 3 and the adjacent connecting disk 2 is stretched and stored. When the rotating disk 3 rotates counterclockwise, the first limiting groove 301 squeezes the first clamping frame 4, so that the first clamping frame 4 moves in the direction close to the axis of the rotating disk 3; the arc-shaped rack 5 has two, which are respectively fixed to the adjacent rotating disks 3. The housing 1 is slidably connected to two straight racks 6 that are respectively engaged with the adjacent arc-shaped racks 5. The straight racks 6 are fixed with a fixed block 7. The housing 1 The sliding connection is provided with a sliding block 8 that fits with the adjacent fixed block 7. Two pressure sensors 9 are installed on the housing 1. The pressure sensor 9 is electrically connected to the signal collector. The sliding block 8 is used to squeeze the adjacent pressure sensor 9. The sliding block 8 is threadedly connected with a connector 10. The connector 10 is a threaded fastener (i.e., a bolt and nut). The connector 10 is used to connect the adjacent fixed block 7 and the adjacent sliding block 8. When the connector 10 is not tightened, the connector 10 is slidingly connected to the fixed block 7. After the bolts and nuts of the connector 10 are tightened, the connector 10 presses the fixed block 7 and the sliding block 8, and the fixed block 7 and the connector 10 can no longer slide relative to each other.
[0020] like Figure 2 and Figure 5 As shown, it also includes: first clamping blocks 11, the number of which is the same as that of the first clamping frames 4, and which are respectively fixed to the adjacent first clamping frames 4, and the size of the right part of the first clamping block 11 gradually decreases from close to the adjacent rotating disk 3 to far away. Taking the first clamping block 11 on the upper right side as an example, the lower side surface of the right part of the first clamping block 11 on the right side gradually bends upward from left to right. When the cable shakes, the lower side surface of the first clamping block 11 fits the cable to reduce the friction force on the cable when it is clamped.
[0021] The specific working principle is as follows: Before using the present structure, the operator twists the connecting piece 10 to loosen the connecting piece 10 so that the fixing block 7 and the connecting piece 10 can slide relative to each other.
[0022] When the structure is used to measure the current or voltage of the cable, the operator first installs the housing 1 at the designated location, and then rotates the rotating disk 3 clockwise (to Figure 1 The right view is the reference for the rotation direction), the first elastic member between the rotating disk 3 and the connecting disk 2 is stretched, and the first limiting groove 301 squeezes the first clamping frame 4, so that the first clamping frame 4 moves in the direction away from the axis of the rotating disk 3, and all the first clamping frames 4 are spread out to the surroundings. The operator passes the cable into the hole in the middle of the shell 1, and then the operator loosens the rotating disk 3. The first elastic member between the rotating disk 3 and the connecting disk 2 is reset, so that the rotating disk 3 rotates counterclockwise and resets. The first limiting groove 301 squeezes the first clamping frame 4, so that the first clamping frame 4 moves in the direction close to the axis of the rotating disk 3, and the first clamping frame 4 drives the first clamping block 11 to move. The first clamping block 11 clamps the cable, and there is friction resistance between the connecting disk 2 and the rotating disk 3 to reduce the probability of the cable being deviated by the external environment during use (the deviation will cause the cable to bend or stretch, resulting in a change in the optical path of the cable, thereby affecting the stability of the phase or polarization state, and thus affecting the accuracy of the detection result), ensuring the accuracy of the cable current detection of this structure.
[0023] Before using this structure, when the rotating disk 3 rotates, the rotating disk 3 drives the arcuate rack 5 to rotate, the arcuate rack 5 drives the spur rack 6 to move, and the spur rack 6 drives the fixed block 7 to move. However, at this time, the fixed block 7 and the connecting member 10 can slide relative to each other, so the fixed block 7 cannot drive the sliding block 8 to move through the connecting member 10.
[0024] After the first clamping block 11 clamps the cable, the operator tightens the connecting piece 10 , and the connecting piece 10 presses the fixed block 7 and the sliding block 8 , so that the fixed block 7 and the connecting piece 10 can no longer slide relative to each other.
[0025] The first clamping block 11 clamps the cable, and in the process of using this structure, if the external strong wind causes the cable to shake, or the cable shakes due to being touched by mistake, the cable shakes and squeezes the first clamping block 11, so that the first clamping block 11 moves and drives the first clamping frame 4 to move. If the first clamping frame 4 wants to move, it needs to push the first limiting groove 301 (so that the movement of the first clamping frame 4 needs to overcome the resistance generated by the rotation of the rotating disk 3, and increase the force required for relative rotation between the connecting disk 2 and the rotating disk 3), and make the rotating disk 3 rotate. When the rotating disk 3 rotates, the first elastic member between the rotating disk 3 and the adjacent connecting disk 2 is stretched (the first elastic member between the rotating disk 3 and the adjacent connecting disk 2 is stretched). The extension needs to overcome its own elastic force, further increasing the force required for relative rotation between the connecting disk 2 and the rotating disk 3). The rotating disk 3 drives the arc rack 5 to rotate, the arc rack 5 drives the straight rack 6 to move, the straight rack 6 drives the fixed block 7 to move, and the fixed block 7 drives the sliding block 8 to move through the connecting piece 10. The sliding block 8 moves and squeezes the pressure sensor 9. The pressure sensor 9 is pressurized and transmits an electrical signal to the signal collector, so that the signal collector receives the information that the cable is shaking and transmits the information to the operator, so that the operator can intuitively judge which are the erroneous parameters caused by the shaking of the cable, and remind the personnel that the current of the cable itself is not abnormal, thereby ensuring the accuracy of the personnel's judgment on the status of the optical cable.
[0026] When there is no wind in the external environment, the cable no longer shakes, and the first elastic member between the rotating disk 3 and the adjacent connecting disk 2 is reset, so that the rotating disk 3 rotates and resets, and the rotating disk 3 squeezes the first clamping frame 4 through the first limiting groove 301 to reset, and the first clamping frame 4 drives the first clamping block 11 to reset, and the first clamping block 11 clamps the cable again. In the process of resetting the rotating disk 3, the arc-shaped rack 5 drives the straight rack 6 to reset, and the straight rack 6 drives the connecting member 10 to reset through the fixed block 7, and the connecting member 10 drives the sliding block 8 to reset, and the pressure sensor 9 is no longer under pressure.
[0027] When the operator needs to stop using the structure or needs to overhaul the structure, the operator disassembles and overhauls the device to facilitate the next use.
[0028] like Figure 1 and Figure 3 As shown, it also includes: a connecting rod 12, which is fixed between the symmetrically distributed connecting disks 2 and is slidably connected to the housing 1, so that when one connecting disk 2 moves horizontally, the connecting rod 12 drives the other connecting disk 2 to move synchronously.
[0029] like Figure 3 and 6As shown, it also includes: a second clamping frame 13, the number of which is the same as that of the first clamping frame 4, the connecting disk 2 is provided with a circumferentially distributed second straight groove, the second clamping frame 13 is slidably connected to the adjacent second straight groove of the adjacent connecting disk 2, the axis of the second straight groove is perpendicular to the axis of the shell 1, the rotating disk 3 is provided with a circumferentially distributed second limiting groove 302, the first limiting groove 301 and the second limiting groove 302 on the same rotating disk 3 are alternately distributed, the second clamping frame 13 slides in the adjacent second limiting groove 302, the second clamping frame 13 and the first clamping frame 4 on the same connecting disk 2 are alternately distributed, the second clamping frame 13 is slidably connected to the second clamping block 1301, with the second clamping block 1301 on the upper right side. Taking the tightening block 1301 as an example, the lower side surface of the right part of the second clamping block 1301 on the upper right side gradually bends upward from left to right. When the cable shakes, the lower side surface of the second clamping block 1301 fits the cable to reduce the friction force when the cable is clamped. A second elastic member is fixed between the second clamping block 1301 and the adjacent second clamping frame 13. The second elastic member between the second clamping block 1301 and the adjacent second clamping frame 13 is a compression spring. Friction surfaces are provided at the position of the first clamping block 11 facing the axis of the connecting disk 2 and the position of the second clamping block 1301 facing the axis of the connecting disk 2 to increase the friction force between the cable and the first clamping block 11 and the second clamping block 1301.
[0030] like Figure 5 and Figure 6 As shown, it also includes: a retaining ring 14, which has two and is respectively fixed to the left and right sides of the shell 1, and the second clamping block 1301 is fitted with the adjacent retaining ring 14 to prevent the second clamping block 1301 from moving between the shell 1 and the cable. The length of the second clamping block 1301 is greater than the length of the first clamping block 11, and there is a distance between the first clamping block 11 and the retaining ring 14. The first clamping block 11 cannot move between the shell 1 and the cable. A third elastic member is fixed between the connecting disk 2 and the shell 1, wherein the third elastic member between the connecting disk 2 and the shell 1 is a spring, and the third elastic member between the connecting disk 2 and the shell 1 is sleeved on the connecting rod 12, and the elastic coefficient of the third elastic member between the connecting disk 2 and the shell 1 is smaller than the elastic coefficient of the first elastic member between the rotating disk 3 and the connecting disk 2.
[0031] like Figure 3 and Figure 5 As shown, it also includes: two shielding covers 15, which are symmetrically distributed on the left and right and are respectively fixed between adjacent connecting plates 2 and the shell 1, and are used to shield the part of the cable close to the shell 1. The shielding covers 15 are made of elastic material.
[0032] The specific working principle is as follows: During the use of this structure, when the cable is affected by external tension (such as the cable shaking in strong winds), the cable moves horizontally relative to the housing 1, and the cable drives the rotating disk 3 to move horizontally through the first clamping block 11 and the second clamping block 1301. The rotating disk 3 drives the connecting disk 2 to move, and the third elastic member between the connecting disk 2 and the housing 1 is deformed. The connecting disk 2 squeezes the shielding cover 15 during the movement, and the shielding cover 15 is deformed (the shielding cover 15 shields the part of the cable close to the housing 1 to reduce the amount of external rainwater or dust adhering to the cable close to the housing 1, thereby reducing the influence of rainwater and dust on the stability of the cable current. Thus ensuring the stability of the cable detection results), taking the movement of the cable to the right as an example, during the movement of the right connecting disk 2, the right connecting disk 2 drives the left connecting disk 2 to move to the left through the connecting rod 12, and the third elastic member between the left connecting disk 2 and the shell 1 is compressed, and the third elastic member between the right connecting disk 2 and the shell 1 is stretched, which ensures that the cable is clamped by the first clamping block 11 and the second clamping block 1301, and also ensures that the cable can move horizontally when pulled, so that the cable does not deviate in the hole of the shell 1, thereby reducing the influence of the tension on the cable, thereby reducing the probability of the cable being broken and ensuring the stability of the detection parameters of this structure.
[0033] During the movement of the connecting disk 2, taking the movement of the cable to the right as an example, the cable drives the first clamping block 11 on the left to move to the right, and the second clamping block 1301 on the left is blocked by the retaining ring 14 and cannot move to the right, so that the second clamping block 1301 on the left and the first clamping block 11 on the left are relatively displaced, and the cable drives the first clamping block 11 on the left to move to the right, and the second clamping block 1301 on the left cannot move (that is, the second clamping block 1301 moves to the left relative to the first clamping block 11 on the left and the cable), and the second elastic member between the second clamping block 1301 on the left and the adjacent second clamping frame 13 is compressed, straightening the cable on the left side of the shell 1, so that the cable entering the hole of the shell 1 always remains in a straightened state, so as to ensure the stability of the cable shape, thereby improving the current stability of the section of the cable located in the hole of the shell 1, and improving the accuracy of the current detection of the optical cable by this structure.
[0034] When the cable moves to the right, the cable drives the first clamping block 11 on the right and the second clamping block 1301 on the right to move to the right, so that the right rotating disk 3 and the right connecting disk 2 move to the right, and the third elastic member between the right connecting disk 2 and the shell 1 is stretched. When the cable stops shaking and is no longer affected by the tension, if the cable moves and resets, the third elastic member between the left connecting disk 2 and the shell 1 rebounds and resets, so that the left connecting disk 2 drives the left rotating disk 3 to reset, and the left rotating disk 3 drives the left first clamping block 11 to reset, the first clamping block 11 and the cable are reset synchronously, and the second elastic member between the left second clamping block 1301 and the adjacent second clamping frame 13 is reset. At the same time, the cable drives the first clamping block 11 on the right and the second clamping block 1301 on the right to move and reset, so that the right rotating disk 3 and the right connecting disk 2 move and reset, and the third elastic member between the right connecting disk 2 and the shell 1 is reset.
[0035] During the shaking of the cable, since the elastic coefficient of the third elastic member between the connecting disk 2 and the shell 1 is smaller than the elastic coefficient of the first elastic member between the rotating disk 3 and the connecting disk 2, the third elastic member between the connecting disk 2 and the shell 1 is deformed first, that is, the two connecting disks 2 preferentially drive the cable to move horizontally, and the second clamping block 1301 and the first clamping block 11 are relatively displaced according to the above steps, and the cable is straightened first until the cable displacement amplitude is too large and the cable clamping point is offset. Only then will the first elastic member between the rotating disk 3 and the connecting disk 2 be deformed to reduce the probability of the cable being offset in the hole of the shell 1, thereby improving the efficiency of the cable monitoring structure by this structure.
[0036] In summary, the invention includes but is not limited to the above embodiments. Any equivalent replacement or partial improvement made under the spirit and principle of the present invention shall be deemed to be within the scope of protection of the present invention.
Claims
1. A new type of optical fiber mutual inductor, characterized in that: Includes: A housing (1), wherein a signal collector is installed on the housing (1), the housing (1) is provided with symmetrically distributed connecting disks (2), the connecting disks (2) are rotatably connected to rotating disks (3), a first elastic member is fixedly connected between the rotating disks (3) and the adjacent connecting disks (2), the rotating disks (3) are provided with circumferentially distributed first limiting grooves (301), the connecting disks (2) are provided with circumferentially distributed first straight grooves, and the first straight grooves of the connecting disks (2) and the adjacent first limiting grooves (301) are slidably connected to a first clamping frame (4); There are two arc-shaped racks (5), which are respectively fixed to the adjacent rotating disks (3); the housing (1) is slidably connected to two straight racks (6) respectively meshing with the adjacent arc-shaped racks (5); the straight racks (6) are fixed to a fixed block (7); the housing (1) is slidably connected to a sliding block (8); the housing (1) is installed with two pressure sensors (9); the sliding block (8) is used to squeeze the adjacent pressure sensor (9); the sliding block (8) is threadedly connected to a connecting piece (10); the connecting piece (10) is used to connect the adjacent fixed block (7) and the adjacent sliding block (8).
2. A novel optical fiber mutual inductor according to claim 1, characterized in that: The connecting disk (2) and the adjacent rotating disk (3) are both provided with friction surfaces on the opposite sides thereof, for increasing the frictional resistance of the rotating disk (3) when the rotating disk (3) rotates.
3. A novel optical fiber mutual inductor according to claim 1, characterized in that: Also included are: The number of the first clamping blocks (11) is the same as that of the first clamping frames (4), and they are respectively fixed to adjacent first clamping frames (4).
4. A novel optical fiber mutual inductor according to claim 1, characterized in that: Also included are: The connecting rod (12) is fixed between the symmetrically distributed connecting plates (2) and is slidably connected to the housing (1).
5. A novel optical fiber mutual inductor according to claim 4, characterized in that: Also included are: The number of the second clamping frames (13) is the same as that of the first clamping frames (4), the connecting disk (2) is provided with circumferentially distributed second straight grooves, the second clamping frames (13) are slidably connected in adjacent second straight grooves of adjacent connecting disks (2), the rotating disk (3) is provided with circumferentially distributed second limiting grooves (302), the first limiting grooves (301) and the second limiting grooves (302) on the same rotating disk (3) are alternately distributed, the second clamping frames (13) slide in adjacent second limiting grooves (302), the second clamping frames (13) and the first clamping frames (4) on the same connecting disk (2) are alternately distributed, the second clamping frames (13) are slidably connected with second clamping blocks (1301), and a second elastic member is fixed between the second clamping blocks (1301) and the adjacent second clamping frames (13).
6. A novel optical fiber mutual inductor according to claim 5, characterized in that: Also included are: There are two retaining rings (14), which are respectively fixed to two sides of the housing (1), and the second clamping block (1301) is fitted with the adjacent retaining rings (14).
7. A novel optical fiber mutual inductor according to claim 6, characterized in that: A friction surface is provided on the side of the first clamping block (11) facing the axis of the connecting disk (2) and on the side of the second clamping block (1301) facing the axis of the connecting disk (2).
8. A novel optical fiber mutual inductor according to claim 7, characterized in that: The length of the second clamping block (1301) is greater than the length of the first clamping block (11), and there is a distance between the first clamping block (11) and the retaining ring (14).
9. A novel optical fiber mutual inductor according to claim 8, characterized in that: A third elastic member is fixedly connected between the connecting disk (2) and the shell (1), and the elastic coefficient of the third elastic member between the connecting disk (2) and the shell (1) is smaller than the elastic coefficient of the first elastic member between the rotating disk (3) and the connecting disk (2).
10. A novel optical fiber mutual inductor according to claim 9, characterized in that: Also included are: The shielding covers (15) have two symmetrically distributed ones and are respectively fixed between the adjacent connecting plates (2) and the housing (1); the shielding covers (15) are made of elastic material.