Three-phase common-box GIL monitoring and positioning device based on optical fiber sensing technology

Abstract

The invention discloses a three-phase common-box GIL monitoring and positioning device based on an optical fiber sensing technology, and belongs to the technical field of optical fiber sensing. The three-phase common-box GIL monitoring and positioning device based on the optical fiber sensing technology comprises a sound wave wire clamp, a monitoring module and an optical fiber unit, the sound wave wire clamp comprises a pipe clamp body and a screw knob, a threaded connecting shaft is arranged between the pipe clamp body and the screw knob, and the threaded connecting shaft and the pipe clamp body are arranged to be of an integrated structure. In order to solve the problems that an optical fiber in a power transmission line as a high-speed and stable transmission medium may be fractured under the action of external force or other reasons, but line rejection cannot be accurately and effectively positioned due to the traditional three-phase common box, a sound wave wire clamp can collect signal strength and frequency at a node in a sound wave detection mode, and the signal strength and the frequency of the node are acquired. And then integration processing is carried out through the monitoring module, so that the optical fiber line fault in the common box can be rapidly positioned in this way.

Description

Technical Field

[0001] The present invention relates to the technical field of optical fiber sensing, and in particular to a three-phase common-box GIL monitoring and positioning device based on optical fiber sensing technology. Background Art

[0002] GIL refers to a power transmission line composed of a rigid metal enclosure, an insulating gas filled inside, and a bellows compensator with thermal expansion and contraction displacement compensation. Because it is suitable for long-distance power transmission, it has been increasingly widely used. In the GIL power transmission line, three-phase common-box means that the three-phase conductors of GIL are enclosed in a grounded enclosure, and the three-phase conductors are arranged in a triangle inside the housing;

[0003] In the existing power transmission lines, as a high-speed and stable transmission medium, optical fibers may break due to external forces or other reasons. However, the traditional three-phase common-box makes the line complex and unable to accurately and effectively locate. Summary of the Invention

[0004] The purpose of the present invention is to provide a three-phase common-box GIL monitoring and positioning device based on optical fiber sensing technology. The acoustic wire clamp can collect the signal intensity and frequency at the node by acoustic detection, and then through the monitoring module for integration and processing, and obtain the detection result. In this way, the optical fiber line fault inside the common box can be quickly located, and the problems in the prior art can be solved.

[0005] To achieve the above object, the present invention provides the following technical solution: A three-phase common-box GIL monitoring and positioning device based on optical fiber sensing technology, including an acoustic wire clamp, a monitoring module and an optical fiber unit. The acoustic wire clamp includes a pipe clamp body and a screw knob. A threaded shaft is arranged between the pipe clamp body and the screw knob. Among them, the threaded shaft and the pipe clamp body are set as an integral structure. The screw knob is rotationally connected to the threaded shaft through an internal thread. One end of the screw knob is provided with a wiring group, and the wiring group extends into the pipe clamp body. Among them, the acoustic wire clamp is electrically connected to the monitoring module through the wiring group. Two or more acoustic wire clamps are used for node detection operations. The acoustic wire clamp is clamped on the outer surface of the optical fiber. A certain distance needs to be maintained between adjacent acoustic wire clamps, and the distance can be reduced or increased with multiple detections. Then, all the acoustic wire clamps are connected to the handheld monitoring module through the wiring group for use. Subsequently, electrical signals are transmitted through the transceiver devices at both ends of the optical fiber. During the process, the acoustic wire clamp can collect the signal intensity and frequency at the node by acoustic detection, and then through the monitoring module for integration and processing, and obtain the detection result. In this way, the optical fiber line fault inside the common box can be quickly located.

[0006] Further, the input end of the optical fiber unit is connected to the signal generating end, and the output end of the optical fiber unit is connected to the signal receiving end, wherein the acoustic wire clamp is fixed on the surface of the optical fiber unit;

[0007] The signal generating end is used to emit a detection signal and transmit it through the optical fiber unit, and the frequency of the detection signal can be adjusted and set;

[0008] The signal receiving end is used to receive the signal data inside the optical fiber unit, and then record the time data in combination with the sending time of the signal generating end and its own receiving time.

[0009] Further, the monitoring module interacts with the feedback unit, wherein the monitoring module is used to receive the detected acoustic wave feedback duration of the acoustic wire clamp, analyze the data, and then upload the analysis result to the feedback unit;

[0010] The feedback unit is used to receive the analysis information and take corresponding countermeasures according to the analysis result.

[0011] Further, the monitoring module includes measuring point A and measuring point B, wherein measuring point A is the measuring point data between the optical fiber unit and the signal generating end, and measuring point B is the measuring point data between the optical fiber unit and the signal receiving end.

[0012] Further, the specific positions of measuring point A and measuring point B are set as follows:

[0013] Retrieve the optical fiber length value;

[0014] Compare the optical fiber length value with a preset optical fiber length reference value to obtain a length ratio;

[0015] Extract the detection signal frequency of the signal generating end;

[0016] Use the length ratio in combination with the detection signal frequency of the signal generating end to set the set distance between measuring point A and the optical fiber unit;

[0017] Among them, the set distance between measuring point A and the optical fiber unit is obtained through the following formula:

[0018]

[0019] Among them, L A represents the set distance between measuring point A and the optical fiber unit; B represents the length ratio; L z represents the optical fiber length value; f represents the detection signal frequency of the signal generating end; f c represents the preset detection signal frequency reference value;

[0020] Use the set distance between measuring point A and the optical fiber unit to set the distance between measuring point B and the optical fiber unit.

[0021] Further, the distance between the measurement point B and the optical fiber unit is set by using the set distance between the measurement point A and the optical fiber unit, including:

[0022] Extracting the set distance between the measurement point A and the optical fiber unit;

[0023] Retrieving the attenuation coefficient corresponding to the signal transmission in the optical fiber unit;

[0024] Using the attenuation coefficient in combination with the set distance between the measurement point A and the optical fiber unit to set the distance between the measurement point B and the optical fiber unit;

[0025] Among them, the distance between the measurement point B and the optical fiber unit is obtained through the following formula:

[0026]

[0027] Among them, L B represents the distance between the measurement point B and the optical fiber unit; L A represents the set distance between the measurement point A and the optical fiber unit; λ represents the attenuation coefficient corresponding to the signal transmission in the optical fiber unit; Q y represents the maximum signal attenuation amount allowed at the measurement point B.

[0028] Further, the measurement point A and the measurement point B respectively include signal intensity, instantaneous point measurement, and fluctuation frequency; the monitoring module first judges the signal intensity of the measurement point A. If the signal intensity of the measurement point A is less than the starting intensity, the judgment is triggered. If the signal intensity of the measurement point A is equal to the starting intensity, the signal intensity of the measurement point B is judged. If the intensity is less than the signal intensity at the measurement point A, the judgment is triggered;

[0029] The signal intensity is used to judge whether there is a break in the optical fiber line;

[0030] The instantaneous point measurement is used to detect the signal passing time at the two measurement points, and the signal propagation efficiency can be judged;

[0031] The fluctuation frequency is used to analyze the signal transmission quality of the optical fiber.

[0032] Further, one end of the pipe clamp body is provided with a clamping groove, and four groups of clamping rods are arranged inside the clamping groove. Among them, one end of the clamping rod is provided with a damping sleeve wheel, and the damping sleeve wheel is rotatably connected to the clamping rod. The other end of the clamping rod is provided with an integrally formed locking cone head. The line is fixed between the damping sleeve wheels grouped in pairs up and down. In this way, when adjusting the position and spacing later, the acoustic wave line clamp can be directly slid. The design of the damping sleeve wheel will not cause damage to the optical fiber, effectively avoiding the situation of optical fiber breakage during the detection process.

[0033] Further, a limiting bushing is arranged inside the pipe clamp body. The limiting bushing is connected to the pipe clamp body through a clamping groove. A guiding groove is arranged on the outer surface of the limiting bushing. The clamping rod is slidably connected to the limiting bushing through the guiding groove. A signal converter is arranged at one end of the limiting bushing. A processing module is arranged inside the signal converter. Wherein, the signal converter is electrically connected to the wiring harness group.

[0034] Further, a limiting groove is arranged on the outer side of the signal converter. The locking cone head is located inside the limiting groove. A retracting groove is arranged inside the screw knob. The retracting groove is arranged in a conical structure. A rubber sleeve is arranged at one end of the processing module. A guiding sleeve is arranged at one end of the rubber sleeve. Wherein, the guiding sleeve is connected to the rubber sleeve through a clamping groove. After the optical fiber is clamped and fixed by the clamping rod, the screw knob can be rotated to adjust the tightness between the clamping rods. When the screw knob is rotated clockwise, the retracting groove moves inwards and contacts the locking cone head at the tail of the clamping rod. By squeezing the locking cone head through the retracting groove, the distance between the clamping rods can be reduced, thereby completing the clamping operation of the optical fiber and avoiding the loosening of the wire clamp during the detection process.

[0035] Further, a ball bearing groove is arranged on the end face of the guiding sleeve. Glass balls are arranged inside the ball bearing groove. Wherein, the glass balls are rotatably connected to the guiding sleeve through the ball bearing groove. The guiding sleeve extends between the clamping rods. When the optical fiber line is fixed inside the clamping groove, the glass balls at the front end of the guiding sleeve can be attached to the surface of the optical fiber.

[0036] Further, a transceiver conduit is arranged inside the guiding sleeve. The transceiver conduit extends to the inner side of the glass ball. The transceiver conduit is electrically connected to the processing module. The processing module is electrically connected to the signal converter. During detection, the acoustic signal is sent out through the transceiver conduit by the signal converter and the processing module. The acoustic wave sent out by the transceiver conduit acts on the optical fiber. When there is an electrical signal transmission inside the optical fiber, after the electrical signal contacts the acoustic signal, the acoustic signal is transmitted back. By receiving the transmitted-back signal through the transceiver conduit, the intensity of the electrical signal inside the optical fiber can be obtained. Combining with timing, the transmission rate of the signal can be calculated.

[0037] Compared with the prior art, the beneficial effects of the present invention are:

[0038] 1. In the present invention, two or more than two acoustic wire clamps are used for node detection operations. The acoustic wire clamps are clamped on the outer surface of the optical fiber, and a certain distance needs to be maintained between adjacent acoustic wire clamps. The distance can be reduced or increased during multiple detections. Then, all the acoustic wire clamps are connected to a handheld monitoring module through a patch cord group for use. Subsequently, electrical signals are transmitted through the transceiver devices at both ends of the optical fiber. During the process, the acoustic wire clamps can collect the signal intensity and frequency at the node through acoustic detection, and then the monitoring module integrates and processes them to obtain the detection result. In this way, the faults of the optical fiber line inside the common box can be quickly located.

[0039] 2. In the present invention, measuring point A and measuring point B respectively include signal intensity, instantaneous point measurement, and fluctuation frequency. The monitoring module first judges the signal intensity of measuring point A. If the signal intensity of measuring point A is less than the starting intensity, the judgment is triggered. At this time, it can be concluded that there is a break problem in the optical fiber line between measuring point A and the signal generating end 6. Move measuring point A to continue monitoring until the intensity of measuring point A is normal. When the signal intensity of measuring point A is equal to the starting intensity, then judge the signal intensity of measuring point B. If the intensity is less than the signal intensity at measuring point A, the judgment is triggered. At this time, it means that there is a break in the optical fiber between the two measuring points. After the intensity of measuring point B is equal to the intensity of measuring point A, then move measuring point B and continue monitoring until the break point is found.

[0040] 3. In the present invention, when the optical fiber line is fixed inside the clamping groove, the glass ball at the front end of the guide sleeve can fit on the surface of the optical fiber. During detection, the acoustic signal is sent out through the transceiver conduit by the signal converter and the processing module. The acoustic wave emitted by the transceiver conduit acts on the optical fiber. When there is an electrical signal transmission inside the optical fiber, after the electrical signal contacts the acoustic signal, the acoustic signal is transmitted back, and the intensity of the electrical signal inside the optical fiber can be obtained by receiving the transmitted-back signal through the transceiver conduit. Combining with timing, the transmission rate of the signal can be calculated. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is the overall front view of the present invention;

[0042] Figure 2 is the overall side view of the present invention;

[0043] Figure 3 is the schematic cross-sectional structure diagram of the acoustic wire clamp of the present invention;

[0044] Figure 4 is Figure 3 the enlarged structure diagram at A of

[0045] Figure 5 is the schematic structure diagram of the screw knob of the present invention;

[0046] Figure 6 is the schematic structure diagram of the clamping rod of the present invention;

[0047] Figure 7 Schematic diagram of the positioning and monitoring framework of the present invention;

[0048] Figure 8 Schematic diagram of the judgment process of the present invention.

[0049] In the figure: 1. Acoustic wave wire clamp; 2. Tap connection group; 3. Monitoring module; 4. Signal receiving end; 5. Optical fiber unit; 6. Signal generating end; 7. Feedback unit; 101. Clamp body; 102. Screw knob; 103. Clamping rod; 104. Limit bushing; 1011. Threaded connecting shaft; 1012. Clamping groove; 1021. Retracted groove; 1031. Damping sleeve wheel; 1032. Locking cone head; 1041. Guide groove; 201. Signal converter; 202. Processing module; 203. Guide sleeve; 204. Transceiving conduit; 2011. Limit groove; 2012. Rubber sleeve; 2031. Glass ball; 2032. Ball shaft groove. Specific implementation manners

[0050] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0051] In order to solve the problem that the optical fiber in the transmission line, as a high-speed and stable transmission medium, may break due to external force or other reasons, but the traditional three-phase common box makes the line complex and unable to accurately and effectively locate; please refer to Figures 1-8 , the following technical solutions are provided in this embodiment:

[0052] A three-phase coaxial GIL monitoring and positioning device based on optical fiber sensing technology, including an acoustic wave clamp 1, a monitoring module 3 and an optical fiber unit 5. The acoustic wave clamp 1 includes a pipe clamp body 101 and a screw knob 102. A threaded connecting shaft 1011 is arranged between the pipe clamp body 101 and the screw knob 102. Among them, the threaded connecting shaft 1011 and the pipe clamp body 101 are set as an integral structure, and the screw knob 102 is rotationally connected to the threaded connecting shaft 1011 through an internal thread. One end of the screw knob 102 is provided with a wiring group 2, and the wiring group 2 extends into the interior of the pipe clamp body 101. Among them, the acoustic wave clamp 1 is electrically connected to the monitoring module 3 through the wiring group 2. During detection, two or more acoustic wave clamps 1 can be used for node detection operations. The acoustic wave clamps 1 are clamped on the outer surface of the optical fiber, and a certain distance needs to be maintained between adjacent acoustic wave clamps 1. The distance can be reduced or increased with multiple detections. Then, all the acoustic wave clamps 1 are connected to the handheld monitoring module 3 through the wiring group 2 for use. Subsequently, electrical signals are transmitted through the transceiver devices at both ends of the optical fiber. During the process, the acoustic wave clamps 1 can collect the signal intensity and frequency at the node through acoustic wave detection. Then, it is integrated and processed by the monitoring module 3, and the detection result is obtained. In this way, the optical fiber line fault inside the coaxial box can be quickly located;

[0053] The input end of the optical fiber unit 5 is connected to the signal generating end 6, and the output end of the optical fiber unit 5 is connected to the signal receiving end 4. Among them, the acoustic wave clamp 1 is fixed on the surface of the optical fiber unit 5;

[0054] The signal generating end 6 is used to send detection signals and transmit them through the optical fiber unit 5, and the frequency of the detection signals can be adjusted and set;

[0055] The signal receiving end 4 is used to receive the signal data inside the optical fiber unit 5, and record the time data in combination with the sending time of the signal generating end 6 and its own receiving time;

[0056] The monitoring module 3 interacts with the feedback unit 7. Among them, the monitoring module 3 is used to receive the detected acoustic wave feedback duration of the acoustic wave clamp 1, judge the data, and then upload the judgment result to the feedback unit 7;

[0057] The feedback unit 7 is used to receive the judgment information and take corresponding countermeasures according to the judgment result;

[0058] The monitoring module 3 includes measuring point A and measuring point B. Among them, measuring point A is the measuring point data between the optical fiber unit 5 and the signal generating end 6, and measuring point B is the measuring point data between the optical fiber unit 5 and the signal receiving end 4;

[0059] Specifically, the specific position setting process of measuring point A and measuring point B is as follows:

[0060] Retrieve the optical fiber length value;

[0061] Compare the optical fiber length value with a preset optical fiber length reference value to obtain a length ratio;

[0062] Extract the detection signal frequency of the signal generating end;

[0063] Use the length ratio in combination with the detection signal frequency of the signal generating end to set the set distance between measuring point A and the optical fiber unit;

[0064] Wherein, the set distance between measuring point A and the optical fiber unit is obtained through the following formula:

[0065]

[0066] Wherein, L A represents the set distance between measuring point A and the optical fiber unit; B represents the length ratio; L z represents the optical fiber length value; f represents the detection signal frequency of the signal generating end; f c represents the preset detection signal frequency reference value;

[0067] Use the set distance between measuring point A and the optical fiber unit to set the distance between measuring point B and the optical fiber unit.

[0068] The technical effect of the above technical solution is as follows: By comparing the optical fiber length value with the preset reference value to obtain a length ratio, and combining the detection signal frequency of the signal generating end, the set distance between measuring point A and the optical fiber unit is accurately calculated using the formula. This calculation method based on multiple parameters can fully consider the influence of factors such as optical fiber length and signal frequency on the measurement. Compared with randomly setting the measuring point position, it greatly improves the accuracy and precision of setting the position of measuring point A. Accurately setting the position of measuring point A can more accurately obtain relevant information about the signal transmitted in the optical fiber, such as the intensity and propagation time of the optical signal. Because the accuracy of the position of measuring point A directly affects the measurement accuracy of the optical fiber characteristics, an accurate measuring point position can reduce the measurement deviation caused by position errors, thereby improving the accuracy and reliability of the entire measurement system. Using the set distance between measuring point A and the optical fiber unit to set the distance between measuring point B and the optical fiber unit makes the position settings of measuring point A and measuring point B relevant and consistent. This associated setting can ensure that when measuring or monitoring the optical fiber, the two measuring points can cooperate with each other to jointly complete the measurement of specific parameters of the optical fiber or the comprehensive evaluation of the optical fiber state, further improving the accuracy and reliability of the measurement. For example, parameters such as the propagation speed of light in the optical fiber can be more accurately calculated through the distance between the two points and the signal transmission time.

[0069] Specifically, using the set distance between measuring point A and the optical fiber unit to set the distance between measuring point B and the optical fiber unit includes:

[0070] Extract the set distance between the measurement point A and the optical fiber unit;

[0071] Retrieve the attenuation coefficient corresponding to the signal transmission in the optical fiber unit;

[0072] Set the distance between the measurement point B and the optical fiber unit by using the attenuation coefficient in combination with the set distance between the measurement point A and the optical fiber unit;

[0073] Among them, the distance between the measurement point B and the optical fiber unit is obtained through the following formula:

[0074]

[0075] Among them, L B represents the distance between the measurement point B and the optical fiber unit; L A represents the set distance between the measurement point A and the optical fiber unit; λ represents the attenuation coefficient corresponding to the signal transmission in the optical fiber unit; Q y represents the maximum signal attenuation amount allowed for the measurement point B.

[0076] The technical effects of the above technical solution are as follows: By extracting the set distance between measurement point A and the optical fiber unit and setting the position of measurement point B based on this, the positions of the two measurement points are set to be interrelated and logical. This can ensure that during the measurement process, the data obtained based on the two measurement points is coherent and consistent, which helps to more accurately analyze the transmission characteristics of the signal in the optical fiber, avoid measurement errors caused by unreasonable setting of the measurement point positions, and thus improve the measurement accuracy. At the same time, the attenuation coefficient corresponding to the signal transmission in the optical fiber unit is retrieved, and the distance between measurement point B and the optical fiber unit is calculated in combination with the position of measurement point A. The influence of signal attenuation during transmission on the measurement is fully considered. Since the signal attenuation degree is different at different positions, determining the position of measurement point B according to the attenuation coefficient and the allowed maximum signal attenuation can ensure that the signal received at measurement point B is within an appropriate intensity range, enabling the measurement device to accurately obtain the signal data and further improving the measurement accuracy and reliability. On the other hand, setting the position of measurement point B according to the allowed maximum signal attenuation of measurement point B in the above formula can effectively control the attenuation degree of the signal when it is transmitted to measurement point B. Ensure that the signal intensity is not lower than a certain threshold, avoid the situation that the measurement device cannot accurately detect or make misjudgments due to too weak signal, and thus guarantee the signal quality during the measurement process, providing a reliable basis for subsequent analysis and judgment based on the signal data. Since different optical fibers may have different attenuation coefficients, this technical solution can flexibly adjust the position of measurement point B according to the actual optical fiber attenuation coefficient. For optical fibers with a larger attenuation coefficient, appropriately shorten the distance between measurement point B and the optical fiber unit to ensure signal quality; for optical fibers with a smaller attenuation coefficient, the distance can be appropriately increased. This adaptability can better meet the measurement requirements of different optical fibers and improve the compatibility and applicability of the system to different optical fibers. At the same time, reasonably setting the position of measurement point B makes the measurement point layout of the entire measurement system more scientific and reasonable. Based on accurate measurement point positions and good signal quality, the measurement system can operate stably, reducing the possibility of system failures and data anomalies caused by unreasonable measurement point positions or signal problems, thereby enhancing the reliability and stability of the system and improving the overall performance of the system. By accurately setting the position of measurement point B and ensuring signal quality, the obtained data can more truly reflect the signal transmission situation in the optical fiber. These effective data are of great value for analyzing the performance of the optical fiber, monitoring the state of the optical fiber, and conducting related scientific research and engineering applications, enhancing the effectiveness and practicality of the data.

[0077] Measurement point A and measurement point B respectively include signal strength, instantaneous point measurement, and fluctuation frequency. The monitoring module 3 first judges the signal strength of measurement point A. If the signal strength of measurement point A is less than the starting strength, the judgment is triggered. At this time, it can be concluded that there is a break problem in the optical fiber line between measurement point A and the signal generating end 6. Move measurement point A to continue monitoring until the strength of measurement point A is normal. When the signal strength of measurement point A is equal to the starting strength, then judge the signal strength of measurement point B. If the strength is less than the signal strength at measurement point A, the judgment is triggered. At this time, it means that there is a break in the optical fiber between the two measurement points. After the strength of measurement point B is equal to the strength of measurement point A, then move measurement point B and continue monitoring until the break point is found;

[0078] The signal strength is used to judge whether there is a break in the optical fiber line;

[0079] The instantaneous point measurement is used to detect the signal passing time between two measurement points, and can judge the signal propagation efficiency;

[0080] The fluctuation frequency is used to analyze the signal transmission quality of the optical fiber;

[0081] One end of the pipe clip body 101 is provided with a clamping groove 1012, and four groups of clamping rods 103 are arranged inside the clamping groove 1012. Among them, one end of the clamping rod 103 is provided with a damping sleeve wheel 1031, and the damping sleeve wheel 1031 is rotatably connected to the clamping rod 103. The optical fiber line is clamped into the front end of the clamping groove 1012, and the line is fixed between the damping sleeve wheels 1031 grouped in pairs up and down. In this way, when adjusting the position and spacing later, the acoustic wave wire clip 1 can be directly slid. The design of the damping sleeve wheel 1031 will not cause damage to the optical fiber, effectively avoiding the situation that the optical fiber breaks during the detection process. The other end of the clamping rod 103 is provided with an integrally formed locking cone head 1032. Inside the pipe clip body 101, there is a limit bushing 104. The limit bushing 104 is connected to the pipe clip body 101 through a card slot. A guide groove 1041 is arranged on the outer surface of the limit bushing 104. The clamping rod 103 is slidably connected to the limit bushing 104 through the guide groove 1041. One end of the limit bushing 104 is provided with a signal converter 201. Inside the signal converter 201, there is a processing module 202. Among them, the signal converter 201 is electrically connected to the wiring harness group 2. A limit groove 2011 is arranged on the outside of the signal converter 201. The locking cone head 1032 is located inside the limit groove 2011. An inwardly retracted groove 1021 is arranged inside the knob 102. The inwardly retracted groove 1021 is arranged in a conical structure. After the optical fiber is clamped and fixed by the clamping rod 103, the knob 102 can be rotated to adjust the tightness between the clamping rods 103. When the knob 102 is rotated clockwise, the inwardly retracted groove 1021 moves inward and contacts the locking cone head 1032 at the tail of the clamping rod 103. By squeezing the locking cone head 1032 through the inwardly retracted groove 1021, the distance between the clamping rods 103 can be reduced, thereby completing the clamping operation of the optical fiber and avoiding the situation that the wire clip loosens during the detection process. One end of the processing module 202 is provided with a rubber sleeve 2012, and one end of the rubber sleeve 2012 is provided with a guide sleeve 203. Among them, the guide sleeve 203 is connected to the rubber sleeve 2012 through a card slot. A ball bearing groove 2032 is arranged on the end face of the guide sleeve 203. Inside the ball bearing groove 2032, there is a glass ball 2031. Among them, the glass ball 2031 is rotatably connected to the guide sleeve 203 through the ball bearing groove 2032. The guide sleeve 203 extends between the clamping rods 103. A transceiver conduit 204 is arranged inside the guide sleeve 203. The transceiver conduit 204 extends to the inside of the glass ball 2031. The transceiver conduit 204 is electrically connected to the processing module 202, and the processing module 202 is electrically connected to the signal converter 201. When the optical fiber line is fixed inside the clamping groove 1012, the glass ball 2031 at the front end of the guide sleeve 203 can fit on the surface of the optical fiber. During detection, the acoustic wave signal is sent out through the transceiver conduit 204 by the signal converter 201 and the processing module 202. The acoustic wave sent out by the transceiver conduit 204 acts on the optical fiber. When there is an electrical signal transmission inside the optical fiber, after the electrical signal contacts the acoustic wave signal, the acoustic wave signal is returned.By receiving the feedback signal through the transceiver conduit 204, the intensity of the electrical signal inside the optical fiber can be obtained, and the signal transmission rate can be calculated in cooperation with timing.

[0082] Working principle: Use two or more acoustic wire clips 1 to perform node detection operations. Clamp the acoustic wire clips 1 on the outer surface of the optical fiber. A certain distance needs to be maintained between adjacent acoustic wire clips 1, and the distance can be reduced or increased during multiple detections. Then, connect all the acoustic wire clips 1 to the handheld monitoring module 3 through the patch cord group 2 for use. Subsequently, electrical signals are transmitted through the transceiver devices at both ends of the optical fiber. During the process, the acoustic wire clips 1 can collect the signal intensity and frequency at the nodes through acoustic detection. When detecting, the acoustic signal is sent out through the transceiver conduit 204 by the signal converter 201 and the processing module 202. The acoustic wave emitted by the transceiver conduit 204 acts on the optical fiber. When there is an electrical signal transmission inside the optical fiber, after the electrical signal contacts the acoustic signal, the acoustic signal is feedback-transmitted. By receiving the feedback signal through the transceiver conduit 204, the intensity of the electrical signal inside the optical fiber can be obtained, and the signal transmission rate can be calculated in cooperation with timing. Then, it is integrated and processed by the monitoring module 3 to obtain the detection result. In this way, the optical fiber line faults inside the common box can be quickly located.

[0083] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0084] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention.

Claims

1. A three-phase GIL monitoring and positioning device based on optical fiber sensing technology, characterized in that: The invention comprises an acoustic wave clamp (1), a monitoring module (3) and an optical fiber unit (5), wherein the acoustic wave clamp (1) comprises a pipe clamp body (101) and a screw button (102), a threaded shaft (1011) is arranged between the pipe clamp body (101) and the screw button (102), the screw button (102) and the threaded shaft (1011) are rotatably connected via an internal thread, a tapping wire group (2) is arranged at one end of the screw button (102), the tapping wire group (2) extends into the interior of the pipe clamp body (101), and the acoustic wave clamp (1) is electrically connected to the monitoring module (3) via the tapping wire group (2); the input end of the optical fiber unit (5) is connected to a signal generating end (6), and the output end of the optical fiber unit (5) is connected to a signal receiving end (4), wherein the acoustic wave clamp (1) is fixed to the surface of the optical fiber unit (5); The monitoring module (3) comprises a measuring point A and a measuring point B, wherein the measuring point A is the measuring point data between the optical fiber unit (5) and the signal generating end (6), and the measuring point B is the measuring point data between the optical fiber unit (5) and the signal receiving end (4).

2. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 2 is characterized in that: The monitoring module (3) interacts with the feedback unit (7), wherein the monitoring module (3) is used to receive the acoustic wave feedback duration detected by the acoustic wave clamp (1), analyze the data, and then upload the analysis result to the feedback unit (7); The feedback unit (7) is used to receive the analysis information and make corresponding response steps according to the analysis results; The signal generating end (6) is used to send out a detection signal and transmit it through the optical fiber unit (5), and the detection signal frequency can be adjusted and set; The signal receiving end (4) is used to receive signal data inside the optical fiber unit (5), and then record time data in conjunction with the sending time of the signal generating end (6) and its own receiving time.

3. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 1 is characterized in that: The specific location setting process of measuring point A and measuring point B is as follows: Retrieve the value of optical fiber length; Comparing the optical fiber length value with a preset optical fiber length reference value to obtain a length ratio; Extracting the detection signal frequency of the signal generating end (6); The distance between the measuring point A and the optical fiber unit (5) is set by using the length ratio in combination with the detection signal frequency of the signal generating end (6); The distance between the measuring point B and the optical fiber unit (5) is set using the set distance between the measuring point A and the optical fiber unit (5).

4. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 5 is characterized by: The distance between the measuring point B and the optical fiber unit (5) is set by using the set distance between the measuring point A and the optical fiber unit (5), comprising: Extracting the setting distance between the measuring point A and the optical fiber unit (5); Retrieving the attenuation coefficient corresponding to the signal transmitted in the optical fiber unit (5); The distance between the measuring point B and the optical fiber unit (5) is set using the attenuation coefficient in combination with the set distance between the measuring point A and the optical fiber unit (5).

5. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 4 is characterized in that: The measuring point A and the measuring point B respectively include signal strength, instantaneous point measurement and fluctuation frequency; the monitoring module (3) first determines the signal strength of the measuring point A, and triggers the judgment if the signal strength of the measuring point A is less than the starting strength; if the signal strength of the measuring point A is equal to the starting strength, the signal strength of the measuring point B is determined, and if the strength is less than the signal strength at the measuring point A, the judgment is triggered; Signal strength is used to determine whether there is a break in the optical fiber line; Instantaneous point measurement is used to detect the signal passing time between two measurement points and determine the signal propagation efficiency; The fluctuation frequency is used to analyze the signal transmission quality of optical fiber.

6. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 1 is characterized in that: A clamping groove (1012) is provided at one end of the pipe clamp body (101), and four groups of clamping rods (103) are provided inside the clamping groove (1012), wherein a damping sleeve (1031) is provided at one end of the clamping rod (103), and the damping sleeve (1031) is rotatably connected to the clamping rod (103), and an integrally formed locking cone head (1032) is provided at the other end of the clamping rod (103).

7. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 6 is characterized in that: A limiting sleeve (104) is arranged inside the tube clamp body (101), the limiting sleeve (104) is connected to the tube clamp body (101) via a slot, a guide groove (1041) is arranged on the outer surface of the limiting sleeve (104), the clamp rod (103) is slidably connected to the limiting sleeve (104) via the guide groove (1041), a signal converter (201) is arranged at one end of the limiting sleeve (104), a processing module (202) is arranged inside the signal converter (201), and the signal converter (201) is electrically connected to the tapping wiring assembly (2).

8. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 7 is characterized in that: A limiting groove (2011) is arranged on the outer side of the signal converter (201), the locking cone head (1032) is located inside the limiting groove (2011), an inner shrinkage groove (1021) is arranged inside the screw button (102), the inner shrinkage groove (1021) is arranged as a conical structure, a rubber sleeve (2012) is arranged at one end of the processing module (202), and a guide sleeve (203) is arranged at one end of the rubber sleeve (2012), wherein the guide sleeve (203) is connected to the rubber sleeve (2012) via a slot.

9. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 8 is characterized in that: The end surface of the guide sleeve (203) is provided with a ball shaft groove (2032), and a glass ball (2031) is provided inside the ball shaft groove (2032), wherein the glass ball (2031) is rotatably connected to the guide sleeve (203) through the ball shaft groove (2032), and the guide sleeve (203) extends between the clamping rods (103).

10. The three-phase common box GIL monitoring and positioning device based on optical fiber sensing technology according to claim 9 is characterized in that: A transceiver conduit (204) is disposed inside the guide sleeve (203), and the transceiver conduit (204) extends to the inner side of the glass ball (2031). The transceiver conduit (204) is electrically connected to the processing module (202), and the processing module (202) is electrically connected to the signal converter (201).

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