A transmission line fault locating device

Abstract

The present invention relates to the technical field of transmission line fault detection, and specifically relates to a transmission line fault locating device, which is composed of a transmitter, a receiver, a head-end grounding wire, a terminal grounding wire and a probe. The head-end grounding wire is connected to the head end of the transmission line to be detected, and the terminal grounding wire is connected to the terminal end of the transmission line to be detected. The probe comprises a U-shaped frame and tapered rods fixed at both ends of the U-shaped frame. The device is mainly used for troubleshooting and repairing faulty lines. The device is connected to the head end and the terminal end of the transmission line to be detected through the head-end grounding wire and the terminal grounding wire, sends a rated pulse signal through the transmitter, and then collects the signal of the terminal grounding wire through the receiver. By comparing the signals at the head end and the terminal end, it can be fed back whether there is a fault in the line to be detected. By continuously retracting the access points of the head-end grounding wire and the terminal grounding wire relative to the transmission line, the accurate fault location can be found.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission line fault detection, and in particular to a power transmission line fault locating device. Background Art

[0002] Transmission line fault detector is an important tool for maintaining various cables because power transmission depends on the normal operation of cable lines. It adopts multiple fault detection methods, applies the most advanced electronic technology achievements of the time, uses computers and special electronic technology, and combines the successful experience of long-term development of cable testers to launch a new generation of intelligent, full-featured high-tech products.

[0003] Transmission lines are long, widely distributed, and located in complex terrain. Faults are more likely to occur in harsh climates and environments. Furthermore, insulation damage caused by these faults often leaves no visible traces, making them difficult to locate. Therefore, a transmission line fault locator is used to locate the fault point.

[0004] Current transmission line fault locators typically use a transmitter to apply an electrical signal to the faulty line and a receiver to sense the current (the receiver is similar to a current transformer). Applying an electrical signal between two phase lines detects short circuits or insulation failures, while applying an electrical signal between a phase line and the ground detects ground faults. If no current is detected after applying the electrical signal, the circuit is open.

[0005] During outdoor transmission line inspections, the busbar to be tested must be grounded. This is typically done by inserting a probe into the ground at the inspection location. However, due to the dry and relatively hard ground at the inspection location, the tapered rod on the probe is difficult to penetrate, reducing the grounding effectiveness of the busbar and ultimately affecting the detection accuracy of the transmission line fault locator. Summary of the Invention

[0006] The present invention aims at solving the technical problems existing in the prior art and provides a transmission line fault location device to solve the problems raised in the background art.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a transmission line fault locating device, consisting of a transmitter, a receiver, a head-end grounding wire, a terminal grounding wire and a probe rod, the head-end grounding wire is connected to the head end of the transmission line to be detected, the terminal grounding wire is connected to the terminal of the transmission line to be detected, the transmitter is configured with a synchronous pulse generator to send a pulse signal to the head-end grounding wire, the receiver is configured with a receiving airport magnetic sensor to receive the pulse signal transmitted by the terminal grounding wire, the head-end grounding wire and the terminal grounding wire are both grounded through a probe rod, the probe rod includes a U-shaped frame and a conical rod fixed at both ends of the U-shaped frame, and both ends of the U-shaped frame are provided with wetting components to facilitate the insertion of the probe rod into the ground with low humidity for detection and measurement.

[0008] The beneficial effects of the present invention are as follows: the transmission line fault locating device is connected to the head end and the end of the transmission line to be detected through the head end grounding wire and the end grounding wire, a rated pulse signal is generated by the transmitter, and then the signal of the end grounding line is collected by the receiver. By comparing the signals at the head end and the end end, it can be fed back whether there is a fault in the line to be detected; by continuously retracting the access point of the head end grounding wire and the end grounding wire relative to the transmission line, the accurate fault location can be found.

[0009] The transmission line fault locating device detects and locates transmission line faults using a transmission line fault detector. By means of a lubrication component and a push component, the water stored in the water storage pipe is transported toward the ground through a delivery pipe. The water at the delivery point on the delivery pipe moistens the ground at the insertion location, facilitating the insertion of the tapered rod on the probe into the ground, thereby ensuring that the ground wire is accurately grounded.

[0010] The transmission line fault locating device uses a transmission line fault detector to detect and locate the transmission line fault. After the conical rod on the probe rod is pulled out from the ground, during the pulling-out process, the annular plate no longer contacts the ground. At this time, the annular plate is pushed back to its original position by the springs on each slide rod. During the resetting process of the annular plate, the annular rubber cleaning plate inside the annular plate cleans the clay and impurities on the surface of the conical rod after use, thereby facilitating the subsequent operation and use of the transmission line fault detection.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] Furthermore, the wetting component includes a mounting plate fixed to one end of the U-shaped frame, a water storage pipe is fixed on the mounting plate, the lower end of the water storage pipe is slidably connected to a piston rod, a delivery pipe is connected to the piston rod, and pushing components for pushing the piston rod are provided at both ends of the U-shaped frame.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that, by pushing the assembly, the piston rod is pushed toward the inside of the water storage pipe to slide. In the process of the piston rod moving toward the inside of the water storage pipe, due to the blocking of the upper end of the water storage pipe by the cover plate and the setting of the conduction direction of the one-way valve, the water stored in the water storage pipe is transported toward the ground through the delivery pipe, and the land at the insertion position on the ground is moistened by the water at the delivery point on the delivery pipe, which facilitates the insertion of the tapered rod on the probe rod into the ground.

[0014] Furthermore, the pushing assembly includes two symmetrically arranged fixed plates fixed on one end of the U-shaped frame, and the two fixed plates are slidably connected with sliding rods. An annular plate is fixed at one end of the two sliding rods, and the annular plate is concentrically arranged with the conical rod and located at the lower end of the conical rod.

[0015] Furthermore, two L-shaped plates are fixed to the lower end of the piston rod, and the two L-shaped plates are respectively fixed to one end of the two sliding rods.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the two tapered rods are pushed toward the ground by holding the U-shaped frame, so that the two tapered rods are inserted into the inside of the ground. During the process of the tapered rods being inserted into the ground, the annular plate is abutted against the ground and one end of the U-shaped frame moves toward the annular plate as the tapered rods are inserted. During the process of one end of the U-shaped frame moving toward the annular plate, the two sliding rods are pushed to slide on the two fixed plates respectively. During the sliding process of the sliding rods, the piston rod is pushed to slide toward the inside of the water storage pipe through the action of the sliding rods and the L-shaped plate.

[0017] Furthermore, a spring is sleeved on the side walls of the two sliding rods, and two ends of the spring are respectively connected to the fixed plate and the annular plate.

[0018] The beneficial effect of adopting the above further solution is that the spring can facilitate the annular plate to be pushed back to its original position after inspection and verification.

[0019] Furthermore, the upper end of the water storage pipe is threadedly connected to a cover plate for sealing the inside of the water storage pipe.

[0020] The beneficial effect of adopting the above further solution is that the upper end of the water storage pipe can be easily sealed by the cover plate, and water can be easily supplied to the inside of the water storage pipe by removing the cover plate from the water storage pipe.

[0021] Furthermore, a one-way valve is installed on the water storage pipe to facilitate the reset of the piston rod, and the conducting direction of the one-way valve is from the outside of the water storage pipe to the inside of the water storage pipe.

[0022] The beneficial effect of adopting the above further solution is that, by setting the conduction direction of the one-way valve, it is convenient to draw external gas into the interior of the water storage pipe during the resetting process of the piston rod, thereby maintaining normal air pressure inside the water storage pipe.

[0023] Furthermore, an annular rubber cleaning plate for cleaning the surface of the tapered rod is fixed on the inside of the annular plate.

[0024] The beneficial effect of adopting the above-mentioned further scheme is that after the transmission line fault is detected and located by the transmission line fault detector, the conical rod on the probe rod is pulled out from the ground. During the pulling-out process, the annular plate no longer contacts the ground. At this time, the annular plate is pushed to reset by the springs on each sliding rod. During the resetting process of the annular plate, the clay and impurities on the surface of the conical rod after use are cleaned by the annular rubber cleaning plate inside the annular plate, thereby facilitating the subsequent operation and use of the transmission line fault detector.

[0025] Furthermore, a support rod is fixed on the U-shaped frame to facilitate stable operation of the U-shaped frame.

[0026] The beneficial effect of adopting the above further solution is that the use strength of the U-shaped frame is improved through the supporting effect of the support rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is a system diagram of the present invention;

[0028] Figure 2 This is a schematic diagram of the overall appearance structure of the present invention;

[0029] Figure 3 This is a schematic structural diagram of the wetting component and the pushing component of the present invention;

[0030] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0031] Figure 5 for Figure 3 Enlarged view of point B in the middle.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 1. U-shaped frame; 2. Conical rod; 301. Mounting plate; 302. Water storage pipe; 303. Piston rod; 304. Delivery pipe; 401. Fixing plate; 402. Sliding rod; 403. Annular plate; 404. L-shaped plate; 5. Spring; 6. Annular rubber cleaning plate; 7. Cover plate; 8. One-way valve; 9. Support rod. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] Transmission lines are important facilities to ensure power transmission. Once a line fails, it will cause power interruption. If the fault cannot be detected and eliminated in time, it will cause great economic losses and adverse social impacts. Therefore, fault testers are important tools for maintaining the operation of various lines.

[0036] In the process of detecting and locating transmission line faults using a transmission line fault detector, it is necessary to insert a probe rod into the ground inside the pre-buried transmission line. However, the ground at the detection location is often very dry and not deep, making it difficult for the tapered rod on the probe rod to be inserted into the ground, which brings certain inconveniences to the detection and positioning of transmission line faults. In response to this, the inventors have proposed a transmission line fault locating device to solve the above problem.

[0037] The present invention provides the following preferred embodiments

[0038] Example 1: Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, a transmission line fault locating device consists of a transmitter, a receiver, a head-end grounding wire, a terminal grounding wire and a probe rod. The head-end grounding wire is connected to the head end of the transmission line to be detected, and the terminal grounding wire is connected to the terminal of the transmission line to be detected. The transmitter is equipped with a synchronous pulse generator to send a pulse signal to the head-end grounding wire, and the receiver is equipped with a receiving airport magnetic sensor to receive the pulse signal transmitted by the terminal grounding wire. The head-end grounding wire and the terminal grounding wire are both grounded through a probe rod. The probe rod includes a U-shaped frame 1 and a tapered rod 2 fixed at both ends of the U-shaped frame 1. The tapered rod 2 is used to connect the head-end grounding wire or the terminal grounding wire to complete the grounding; a wetting component is provided on both ends of the U-shaped frame 1 to facilitate the insertion of the probe rod into the ground with low humidity for detection and measurement.

[0039] In this embodiment, Figure 1 and Figure 2 The diagram shows that, through the pushing assembly, the piston rod 303 is pushed toward the inside of the water storage pipe 302 to slide. In the process of the piston rod 303 moving toward the inside of the water storage pipe 302, due to the blocking of the upper end of the water storage pipe 302 by the cover plate 7 and the setting of the conducting direction of the one-way valve 8, the water stored in the water storage pipe 302 is transported toward the ground through the delivery pipe 304. The water at the delivery point on the delivery pipe 304 moistens the ground at the insertion position, making it easier for the tapered rod 2 on the probe rod to be inserted into the ground. The wetting assembly includes a mounting plate 301 fixed to one end of the U-shaped frame 1, and a water storage pipe 302 is fixed on the mounting plate 301. Water is set inside the water storage pipe 302. The lower end of the water storage pipe 302 is slidably connected to the piston rod 303. The delivery pipe 304 is connected to the piston rod 303. Pushing components for the piston rod 303 to push are provided at both ends of the U-shaped frame 1.

[0040] It should be noted that when a pulse signal of rated frequency is emitted through the transmitter, the transmitter can establish a communication connection with a remote server through an external communication module so that the remote staff can process and analyze the data in a timely manner. After the receiver receives the pulse signal, the receiver can also establish a communication connection with the remote server through an external communication module. The staff can compare the transmitter and receiver data through the data processing terminal to further investigate the fault of the transmission line.

[0041] Example 2: This example differs from the above examples in that Figure 4 and Figure 5 As shown, the U-shaped frame 1 is held and the two tapered rods 2 are pushed toward the ground, so that the two tapered rods 2 are inserted into the inside of the ground. During the process of the tapered rods 2 being inserted into the ground, the annular plate 403 is abutted against the ground and as the tapered rods 2 are inserted, one end of the U-shaped frame 1 moves toward the annular plate 403. During the process of one end of the U-shaped frame 1 moving toward the annular plate 403, the two sliding rods 402 are pushed to slide on the two fixed plates 401 respectively. During the sliding process of the sliding rods 402, the sliding rods 402 and the L-shaped plate 404 are pressed against each other. The function is to push the piston rod 303 to slide toward the inside of the water storage pipe 302. The pushing component includes two symmetrically arranged fixed plates 401 fixed on one end of the U-shaped frame 1. The two fixed plates 401 are slidably connected with sliding rods 402. One end of the two sliding rods 402 is fixed with an annular plate 403. The annular plate 403 is concentrically arranged with the tapered rod 2 and is located at the lower end of the tapered rod 2. Two L-shaped plates 404 are fixed to the lower end of the piston rod 303. The two L-shaped plates 404 are respectively fixed to one end of the two sliding rods 402.

[0042] In this embodiment, Figure 4 and Figure 5 As shown, the spring 5 is used to facilitate the reset of the annular plate 403 after inspection and calibration. The side walls of the two slide bars 402 are sleeved with a spring 5, and the two ends of the spring 5 are respectively connected to the fixed plate 401 and the annular plate 403.

[0043] In this embodiment, Figure 4 and Figure 5 As shown, the cover plate 7 is used to seal the upper end of the water storage pipe 302. The cover plate 7 is removed from the water storage pipe 302 to facilitate water supply to the inside of the water storage pipe 302. The upper end of the water storage pipe 302 is threadedly connected to the cover plate 7 for sealing the inside of the water storage pipe 302.

[0044] In this embodiment, Figure 4 and Figure 5As shown, by setting the conduction direction of the one-way valve 8, it is convenient to draw external gas into the water storage pipe 302 during the resetting process of the piston rod 303, so as to maintain normal air pressure inside the water storage pipe 302. A one-way valve 8 is installed on the water storage pipe 302 to facilitate the resetting of the piston rod 303. The conduction direction of the one-way valve 8 is from the outside of the water storage pipe 302 to the inside of the water storage pipe 302.

[0045] In this embodiment, Figure 4 and Figure 5 As shown, after the transmission line fault is detected and located by the transmission line fault detector, the conical rod 2 on the probe is pulled out from the ground. During the pulling-out process, the annular plate 403 is no longer in contact with the ground. At this time, the springs 5 ​​on each sliding rod 402 push the annular plate 403 to reset. During the resetting process of the annular plate 403, the clay and impurities on the surface of the conical rod 2 after use are cleaned by the annular rubber cleaning plate 6 inside the annular plate 403, so as to facilitate the subsequent operation and use of the transmission line fault detector. An annular rubber cleaning plate 6 for cleaning the surface of the conical rod 2 is fixed on the inside of the annular plate 403.

[0046] In this embodiment, Figure 2 and Figure 3 As shown, the support function of the support rod 9 improves the use strength of the U-shaped frame 1, and the support rod 9 is fixed on the U-shaped frame 1 to facilitate the stable operation of the U-shaped frame 1.

[0047] The specific working process of the present invention is as follows: in the process of detecting and locating the fault of the transmission line by using the transmission line fault detector, the handheld U-shaped frame 1 pushes the two conical rods 2 toward the ground, so that the two conical rods 2 are inserted into the inside of the ground. During the process of the conical rods 2 being inserted into the ground, the annular plate 403 is abutted against the ground and as the conical rods 2 are inserted, one end of the U-shaped frame 1 moves toward the annular plate 403.

[0048] As one end of the U-shaped frame 1 moves toward the annular plate 403, the two sliding rods 402 are pushed to slide on the two fixed plates 401 respectively. During the sliding of the sliding rod 402, the piston rod 303 is pushed to slide toward the inside of the water pipe 302 through the action of the sliding rod 402 and the L-shaped plate 404. During the movement of the piston rod 303 toward the inside of the water pipe 302, due to the blocking of the upper end of the water pipe 302 by the cover plate 7 and the setting of the conduction direction of the one-way valve 8, the water stored in the water pipe 302 is transported toward the ground through the delivery pipe 304. The water at the delivery point on the delivery pipe 304 moistens the land at the insertion position, making it easier for the tapered rod 2 on the probe to be inserted into the ground, ensuring that the grounding line is accurately grounded, and ensuring the accuracy of detecting and locating transmission line faults during transmission line fault detection.

[0049] During the detection process, the head-end grounding wire and the end-end grounding wire are connected to the head and end of the transmission line to be detected. The rated pulse signal is generated through the transmitter, and then the signal of the end grounding line is collected through the receiver. By comparing the signals at the head and end, it can be fed back whether there is a fault in the line to be detected; by continuously retracting the access point of the head-end grounding wire and the end grounding wire relative to the transmission line, the exact fault location can be found.

[0050] After the fault of the transmission line is detected and located by the transmission line fault detector, the tapered rod 2 on the probe is pulled out from the ground. During the pulling-out process, the annular plate 403 no longer contacts the ground. At this time, the springs 5 ​​on each sliding rod 402 push the annular plate 403 to reset. During the reset process of the annular plate 403, the clay and impurities on the surface of the tapered rod 2 after use are cleaned by the annular rubber cleaning plate 6 inside the annular plate 403, so as to facilitate the subsequent operation and use of the transmission line fault detection.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A transmission line fault location device, comprising a detection component and a grounding component, characterized in that: The detection component is connected to the grounding component via a wire, and the grounding component is provided with a wetting component; the wetting component comprises a mounting plate (301) fixed to one end of the U-shaped frame (1), a water storage pipe (302) is fixed on the mounting plate (301), a piston rod (303) is slidably connected to the lower end of the water storage pipe (302), a delivery pipe (304) is connected to the piston rod (303), and a pushing component for being pushed by the piston rod (303) is provided at both ends of the U-shaped frame (1); the pushing component comprises two symmetrically arranged fixing plates (401) fixed to one end of the U-shaped frame (1), a sliding rod (402) is slidably connected to the two fixing plates (401), an annular plate (403) is fixed to one end of the two sliding rods (402), and the annular plate (403) is concentrically arranged with the conical rod (2) and located at the lower end of the conical rod (2).

2. A transmission line fault location device according to claim 1, characterized in that: The detection component is mainly composed of a transmitter and a receiver, and the grounding component is mainly composed of a head-end grounding wire, a terminal grounding wire and a probe rod; the head-end grounding wire is connected to the head end of the transmission line to be detected, and the terminal grounding wire is connected to the terminal end of the transmission line to be detected. The transmitter is equipped with a synchronous pulse generator to send a pulse signal to the head-end grounding wire, and the receiver is equipped with a receiving airport magnetic sensor to receive the pulse signal transmitted by the terminal grounding wire. The head-end grounding wire and the terminal grounding wire are both grounded through a probe rod, and the probe rod includes a U-shaped frame (1) and a tapered rod (2) fixed at both ends of the U-shaped frame (1). Both ends of the U-shaped frame (1) are provided with a wetting component for facilitating the insertion of the probe rod into the ground with low humidity for detection and measurement.

3. The power transmission line fault location device according to claim 2, characterized in that: Two L-shaped plates (404) are fixed to the lower end of the piston rod (303), and the two L-shaped plates (404) are respectively fixed to one end of the two sliding rods (402).

4. The power transmission line fault location device according to claim 3, characterized in that: A spring (5) is sleeved on the side walls of the two sliding rods (402), and two ends of the spring (5) are respectively connected to the fixed plate (401) and the annular plate (403).

5. The power transmission line fault location device according to claim 4, characterized in that: The upper end of the water storage pipe (302) is threadedly connected to a cover plate (7) for sealing the interior of the water storage pipe (302).

6. The power transmission line fault location device according to claim 5, characterized in that: A one-way valve (8) is installed on the water storage pipe (302) to facilitate the reset of the piston rod (303), and the conducting direction of the one-way valve (8) is from the outside of the water storage pipe (302) to the inside of the water storage pipe (302).

7. The power transmission line fault location device according to claim 6, characterized in that: An annular rubber cleaning plate (6) for cleaning the surface of the tapered rod (2) is fixed on the inside of the annular plate (403).

8. The power transmission line fault location device according to any one of claims 1 to 7, characterized in that: A support rod (9) is fixed on the U-shaped frame (1) to facilitate stable operation of the U-shaped frame (1).

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