A long distance line fault location system

Abstract

The present invention discloses a long-distance line fault location system, comprising: a motion detection network, the motion detection network comprising a plurality of motion detection units, the plurality of motion detection units being electrically connected in sequence through transmission wires, the transmission wires being connected to the line to be detected; a data monitoring unit being electrically connected to the motion detection network, and used to collect data information of the motion detection network, and thereby determine the fault position of the line; the motion detection unit comprising: a conductive positioning frame, adjacent conductive positioning frames being electrically connected through transmission wires, adjacent transmission wires being slidably arranged on the conductive positioning frame, adjacent transmission wires being electrically connected through the conductive positioning frame, when a fault occurs in the line to be detected, the transmission wires are driven to slide on the conductive positioning frame, and the motion detection unit where the conductive positioning frame is located is electrically disconnected from the data monitoring unit. The present invention realizes long-distance fault location by constructing a monitoring network consisting of motion detection units and data monitoring units.

Description

Technical Field

[0001] The present invention relates to the technical field of fault location, and in particular to a long-distance line fault location system. Background Art

[0002] In production and life, long-distance lines mainly include railways, highways, water pipes, natural gas pipelines, etc. As the mileage of the lines increases rapidly, the cost and difficulty of their operation, maintenance and safety inspection also increase. There are problems with timeliness and reliability in completely relying on manual inspection of the operation of long-distance lines. Taking railways and highways as an example, due to the complex operating environment and long mileage of these lines, the precise location of the failure caused by sudden events such as mudslides is often not discovered in time, resulting in significant losses and injuries. Therefore, the precise positioning of line faults plays a very important role in industrial production.

[0003] When a long-distance line fails, such as a rupture of an underground water pipe or natural gas pipeline, or a collapse of a railway or highway, it is necessary to locate the fault location quickly and accurately at low cost. Traditional manual detection is only suitable for short-distance monitoring and is time-consuming and labor-intensive. Nowadays, the distance required for transportation is increasing, so a system that can accurately locate line faults has become one of the urgent needs in this field. Summary of the invention

[0004] The embodiment of the present invention provides a long-distance line fault location system to solve the problem in the prior art that manual detection is only applicable to short-distance monitoring and is time-consuming and labor-intensive.

[0005] On the one hand, an embodiment of the present invention provides a long-distance line fault location system, including:

[0006] A motion detection network, comprising a plurality of motion detection units, wherein the plurality of motion detection units are electrically connected in sequence via transmission wires, and the transmission wires are connected to a line to be detected;

[0007] A data monitoring unit is electrically connected to one end of the motion detection network and is used to collect data information of the motion detection network and determine the fault location of the line according to the data information;

[0008] The motion detection unit includes:

[0009] Conductive positioning frame, two adjacent conductive positioning frames are electrically connected through a transmission wire, one end of the two adjacent transmission wires are slidably set on the conductive positioning frame, and the two adjacent transmission wires are electrically connected through the conductive positioning frame. When a fault occurs in the line to be detected and drives the transmission wire to slide on the conductive positioning frame, the motion detection unit where the conductive positioning frame is located disconnects the electrical connection with the data monitoring unit.

[0010] A long-distance line fault location system in the present invention has the following advantages:

[0011] The present invention realizes long-distance fault location by constructing a monitoring network composed of motion detection units and data monitoring units. It has a certain degree of independence and has little impact on the application scenario itself. The positioning accuracy can be conveniently adjusted according to specific requirements with low cost and low technical requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 A schematic diagram of an equivalent circuit of a long-distance line fault location system provided by an embodiment of the present invention;

[0014] Figure 2 A schematic diagram of the structure of a motion detection unit provided by an embodiment of the present invention;

[0015] Figure 3 A schematic diagram of the structure of a data monitoring unit provided in an embodiment of the present invention;

[0016] Figure 4 A schematic diagram of a partial structure of a motion detection unit provided in an embodiment of the present invention;

[0017] Figure 5 A schematic diagram of the structure of a conductive positioning frame provided by an embodiment of the present invention;

[0018] Figure 6 A schematic diagram of the structure of a co-location buckle ring provided in an embodiment of the present invention;

[0019] Figure 7 A schematic diagram of the connection structure of the upper transmission wire provided in an embodiment of the present invention;

[0020] Figure 8 A schematic diagram of the connection structure of the lower transmission line provided in an embodiment of the present invention.

[0021] Explanation of the accompanying drawings: 100-motion detection network, 110-motion detection unit, 111-upper connecting wire, 112-conductive positioning frame, 1120-vertical detection rod, 1121-horizontal detection rod, 1122-vertical insulating ring, 1123-vertical resistance wire, 1124-horizontal insulating ring, 1125-horizontal resistance wire, 113-upper transmission buckle, 114-lower connecting wire, 115-lower transmission buckle, 116-load resistor, 121-co-position buckle, 122-co-position weight plate, 200-data monitoring unit, 210-power supply, 220-information acquisition device, 300-transmission wire, 310-upper transmission wire, 320-lower transmission wire. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Figure 1-8 A schematic diagram of the structure of a long-distance line fault location system provided by an embodiment of the present invention. An embodiment of the present invention provides a long-distance line fault location system, including:

[0024] The motion detection network 100 includes a plurality of motion detection units 110, wherein the plurality of motion detection units 110 are electrically connected in sequence via a transmission wire 300, and the transmission wire 300 is connected to a line to be detected;

[0025] The data monitoring unit 200 is electrically connected to one end of the motion detection network 100 and is used to collect data information of the motion detection network 100 and determine the fault location of the line according to the data information;

[0026] The motion detection unit 110 includes:

[0027] Conductive positioning frame 112, two adjacent conductive positioning frames 112 are electrically connected through a transmission wire 300, one end of the two adjacent transmission wires 300 are slidably set on the conductive positioning frame 112, and the two adjacent transmission wires 300 are electrically connected through the conductive positioning frame 112. When a fault occurs in the line to be detected and drives the transmission wire 300 to slide on the conductive positioning frame 112, the motion detection unit 110 where the conductive positioning frame 112 is located is disconnected from the data monitoring unit 200.

[0028] Exemplarily, the motion detection network 100 and the data monitoring unit 200 form a closed loop. When a certain motion detection unit 110 in the motion detection network 100 moves under the influence of the line to be detected, the two adjacent transmission wires 300 connected to the conductive positioning frame 112 in the motion detection unit 110 are disconnected, so that the motion detection unit 110 and the other motion detection units 110 thereafter, that is, the side away from the data monitoring unit 200, are disconnected from the motion detection network 100. The data monitoring unit 200 can collect data information of the remaining motion detection units 100, and then determine the location of the disconnected motion detection unit 110, that is, the location where the line to be detected has a fault.

[0029] In an embodiment of the present invention, a plurality of connection points can be set between the line to be detected and the transmission line 300 according to design requirements, for example, a connection point is set at an interval of 100m, and motion detection units 110 are set near some of the connection points, for example, a motion detection unit 110 is set at an interval of 500m. Then, the positioning accuracy of the entire fault location system is 500m. When the data monitoring unit 200 determines the location of the fault according to the data information, the specific fault location is within 500m of the fault location determined by the data monitoring unit 200. At this time, manual troubleshooting can be performed to determine the specific fault location.

[0030] In a possible embodiment, the data monitoring unit 200 includes: a power supply 210, which is electrically connected to one end of the motion detection network 100, and the power supply 210 is used to supply power to the motion detection network 100; an information collection device 220, which is electrically connected to the output end of the power supply 210, and the information collection device 220 is used to collect current information of the motion detection network 100, and determine the location of the disconnected motion detection unit 110 based on the collected current information.

[0031] Exemplarily, the power supply 210 is a DC power supply, which provides 24V, 16A DC power to the motion detection network 100. When any motion detection unit 110 in the motion detection network 100 is disconnected, the remaining motion detection units 110 in the motion detection network 100 close to the power supply 210 still form a loop with the power supply 210, so the information collection device 220 can still collect corresponding data information normally.

[0032] In the embodiment of the present invention, the data information collected by the information collection device 220 is the loop current. After collecting the loop current, the information collection device 220 determines the current resistance value of the motion detection network 100 according to the voltage output by the power supply 210. Specifically, the resistance value can be determined according to Ohm's law R=U / I. Since the motion detection network 100 is composed of a plurality of motion detection units 110 of the same structure, and the resistance value of each motion detection unit 110 is also the same, a motion detection unit 110 can be regarded as a resistor with a resistance value of R1, and the entire motion detection network 100 is a resistor network formed by connecting a plurality of resistors R1 in parallel, such as Figure 1 When one of the resistors R1 is disconnected, the resistor R1 near the power source 210 still forms a loop, and the total resistance R of the corresponding loop can be determined by collecting the loop current. 总 = R1 / n, where n represents the number of resistors R1 in the resistor network connected to the power supply 210. After determining the value of n, the position of the disconnected motion detection unit 110 in the motion detection network 100 can be determined. For example, if the positioning accuracy of the entire fault location system is 500m, the distance between the disconnected motion detection unit 110 and the data monitoring unit 200 is 500×n.

[0033] In a possible embodiment, the transmission wire 300 includes an upper transmission wire 310 and a lower transmission wire 320, and the upper transmission wire 310 and the lower transmission wire 320 are electrically connected to a load resistor 116 between the ends connected to each conductive positioning frame 112; the upper transmission wire 310 and the lower transmission wire 320 are both slidably connected to the conductive positioning frame 112.

[0034] Exemplarily, the power source 210 has two output terminals, namely, a positive terminal and a negative terminal, and the upper transmission wire 310 and the lower transmission wire 320 are respectively connected to the two output terminals of the power source 210. The upper transmission wire 310 and the lower transmission wire 320 are respectively divided into a plurality of upper transmission sections and a plurality of lower transmission sections with positioning accuracy as the division degree, and the plurality of upper transmission sections are sequentially connected through the same number of conductive positioning frames 112, and the plurality of lower transmission sections are also sequentially connected through the same number of conductive positioning frames 112. Two adjacent upper transmission sections or lower transmission sections are each connected to a conductive positioning frame 112, and an electrical connection is generated through the conductive positioning frame 112, but the two adjacent upper transmission sections or lower transmission sections are insulated from each other, so that even if they come into contact, they will not be electrically connected, and can only be electrically conductive through the conductive positioning frame 112.

[0035] In an embodiment of the present invention, the load resistor 116 serves as a conducting loop and generally adopts a resistance of megohm level. Other components in the system, such as the transmission line 300, the conductive positioning frame 112, etc., also adopt the largest possible resistance value or equivalent resistance value to adapt to the scenario of long-distance fault location.

[0036] In a possible embodiment, the conductive positioning frame 112 includes a vertical detection rod 1120 and a horizontal detection rod 1121 , the upper transmission wire 310 is vertically slidably connected to the vertical detection rod 1120 , and the lower transmission wire 320 is horizontally slidably connected to the horizontal detection rod 1121 .

[0037] Exemplarily, the number of vertical detection rod 1120 and horizontal detection rod 1121 is one, one end of vertical detection rod 1120 and horizontal detection rod 1121 are connected together, and the other end is connected together through horizontal rod and vertical rod to form a frame structure, and upper transmission wire 310 and lower transmission wire 320 are respectively slidably connected to the vertical detection rod 1120 and horizontal detection rod 1121 of the frame structure, so that the upper transmission wire 310 can slide vertically on the vertical detection rod 1120, and the lower transmission wire 320 can slide horizontally on the horizontal detection rod 1121, and since the upper transmission wire 310 and the lower transmission wire 320 are both connected to the line to be detected, the upper transmission wire 310 can be used to detect the movement of the line in the vertical direction, and the lower transmission wire 320 can be used to detect the sliding of the line in the horizontal direction. Once the line to be detected fails, no matter which direction the line moves, it can be detected by the transmission wire 300.

[0038] In a possible embodiment, the vertical detection rod 1120 includes a vertical conductive rod and a vertical insulating ring 1122, and the vertical insulating ring 1122 is set at the end of the vertical conductive rod. When the upper transmission wire 310 slides onto the vertical insulating ring 1122, the electrical connection between the two adjacent upper transmission wires 310 is disconnected; the horizontal detection rod 1121 includes a horizontal conductive rod and a horizontal insulating ring 1124, and the horizontal insulating ring 1124 is set at the end of the horizontal conductive rod. When the lower transmission wire 320 slides onto the horizontal insulating ring 1124, the electrical connection between the two adjacent lower transmission wires 320 is disconnected.

[0039] Exemplarily, the vertical conductive rod and the horizontal conductive rod are both made of metal material, so when the upper transmission wire 310 contacts the vertical conductive rod, an electrical connection can be formed, and when the lower transmission wire 320 contacts the horizontal conductive rod, an electrical connection can also be formed. When one or both of the two adjacent upper transmission wires 310 connected to the vertical detection rod 1120 slide onto the vertical insulating ring 1122, the electrical connection between the two upper transmission wires 310 is cut off by the vertical insulating ring 1122, causing the motion detection unit 110 and subsequent motion detection units 110 to be disconnected from the data monitoring unit 200. Similarly, the activity process of the lower transmission wire 320 on the horizontal detection rod 1121 is the same, which will not be described in detail here.

[0040] In an embodiment of the present invention, the number of vertical insulating rings 1122 and horizontal insulating rings 1124 are both two. The two vertical insulating rings 1122 are respectively arranged at the two ends of the vertical conductive rod, and the two horizontal insulating rings 1124 are respectively arranged at the two ends of the horizontal conductive rod. Therefore, no matter whether the upper transmission wire 310 moves upward or downward, and the lower transmission wire 320 moves to the left or right, it can play a role in motion detection.

[0041] In a possible embodiment, the vertical detection rod 1120 also includes a vertical resistance wire 1123, which is arranged at the end of the vertical insulating ring 1122. When the upper transmission wire 310 slides onto the vertical resistance wire 1123, the vertical resistance wire 1123 melts, and the electrical connection between the two adjacent upper transmission wires 310 is disconnected; the horizontal detection rod 1121 also includes a horizontal resistance wire 1125, which is arranged at the end of the horizontal insulating ring 1124. When the lower transmission wire 320 slides onto the horizontal resistance wire 1125, the horizontal resistance wire 1125 melts, and the electrical connection between the two adjacent lower transmission wires 320 is disconnected.

[0042] Exemplarily, the vertical resistance wire 1123 and the horizontal resistance wire 1125 are both made of metal materials with low melting points, such as aluminum antimony alloys. When one or both of the two adjacent upper transmission wires 310 connected to the vertical detection rod 1120 slide onto the vertical resistance wire 1123, the two upper transmission wires 310 are electrically connected through the vertical resistance wire 1123, and heat begins to be generated after the vertical resistance wire 1123 is energized. Since the vertical resistance wire 1123 has a low melting point, it is easy to be melted due to overheating. When the vertical resistance wire 1123 is melted, the electrical connection between the two upper transmission wires 310 is cut off, causing the motion detection unit 110 and the subsequent motion detection units 110 to be disconnected from the data monitoring unit 200. Similarly, the activity process of the lower transmission wire 320 on the horizontal detection rod 1121 is the same, which will not be described in detail here.

[0043] In an embodiment of the present invention, the number of vertical resistance wires 1123 and horizontal resistance wires 1125 are both two. The two vertical resistance wires 1123 are respectively arranged at the ends of two vertical insulating rings 1122, and the two horizontal resistance wires 1125 are respectively arranged at the ends of two horizontal insulating rings 1124. Therefore, no matter whether the upper transmission wire 310 moves upward or downward, and the lower transmission wire 320 moves left or right, it can play a role in motion detection.

[0044] After the motion detection network 100 is formed, an insulating layer made of insulating paint can be coated on the outside of all components except the moving parts to form an insulating packaging cavity to ensure the stability and safety of the circuit and the surrounding environment.

[0045] In a possible embodiment, one of the two adjacent upper transmission lines 310 is slidably connected to the conductive positioning frame 112 via the upper connecting wire 111; one of the two adjacent lower transmission lines 320 is slidably connected to the conductive positioning frame 112 via the lower connecting wire 114.

[0046] Exemplarily, the upper connecting wire 111 and the lower connecting wire 114 are both soft conductors, so that when the upper transmission wire 310 connected to the upper connecting wire 111 moves relative to the adjacent upper transmission wire 310, the upper transmission wire 310 can still be normally connected to the conductive positioning frame 112. At the same time, when the lower transmission wire 320 connected to the lower connecting wire 114 moves relative to the adjacent lower transmission wire 320, the lower transmission wire 320 can still be normally connected to the conductive positioning frame 112.

[0047] In an embodiment of the present invention, the upper transmission wire 310 is electrically connected to an upper connection wire 111, and the lower transmission wire 320 is electrically connected to two lower connection wires 114. The ends of the upper transmission wire 310 and the lower transmission wire 320 on the rear side of the conductive positioning frame 112 are respectively provided with an upper transmission buckle 113 and a lower transmission buckle 115, and the upper transmission buckle 113 and the lower transmission buckle 115 are respectively slidably connected to the vertical detection rod 1120 and the horizontal detection rod 1121. The upper connection wire 111 slidably connected to the vertical detection rod 1120 is located above the upper transmission buckle 113, and the upper connection wire 111 and the upper transmission buckle 113 are in contact with each other but insulated from each other. The two lower connection wires 114 slidably connected to the horizontal detection rod 1121 are respectively located on the left and right sides of the lower transmission buckle 115, and the lower connection wire 114 and the lower transmission buckle 115 are in contact with each other but insulated from each other.

[0048] In a possible embodiment, a plurality of co-location buckle rings 121 are disposed on both the upper transmission wire 310 and the lower transmission wire 320 , and the co-location buckle rings 121 are used to connect to the line to be detected.

[0049] Exemplarily, the same-position buckle ring 121 can be fixedly connected to the circuit to be detected by welding. When the same-position buckle ring 121 is connected to the circuit, a connection point is formed.

[0050] In the embodiment of the present invention, a plurality of iso-weight plates 122 are further arranged below the upper transmission wire 310 and the lower transmission wire 320. The number of iso-weight plates 122 on the upper transmission wire 310 is the same as the number of iso-weight plates 122 on the lower transmission wire 320, and the positions correspond one to one up and down. The number of iso-weight plates 122 on the upper transmission wire 310 is the same as the number of the conductive positioning frame 112. Each iso-weight plate 122 on the upper transmission wire 310 and the lower transmission wire 320 is located at a position close to the conductive positioning frame 112 at the rear side of the conductive positioning frame 112. One end of the iso-weight plate 122 is fixedly connected to the line to be detected, and the other end is placed below the upper transmission wire 310 and the lower transmission wire 320. Under the connection of the iso-weight plates 122, the movement of the line to be detected can be more accurately transmitted to the upper transmission wire 310 and the lower transmission wire 320.

[0051] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0052] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A long distance line fault location system, characterized in that: include: A motion detection network (100) comprises a plurality of motion detection units (110), wherein the plurality of motion detection units (110) are electrically connected in sequence via a transmission wire (300), wherein the transmission wire (300) is used to connect to a line to be detected; A data monitoring unit (200) is electrically connected to one end of the motion detection network (100) and is used to collect data information of the motion detection network (100) and determine a fault position of the line according to the data information; The motion detection unit (110) comprises: A conductive positioning frame (112), two adjacent conductive positioning frames (112) are electrically connected via a transmission wire (300), one end of the two adjacent transmission wires (300) are both slidably arranged on the conductive positioning frame (112), and the two adjacent transmission wires (300) are electrically connected via the conductive positioning frame (112); when a fault occurs in a line to be detected and drives the transmission wire (300) to slide on the conductive positioning frame (112), the motion detection unit (110) where the conductive positioning frame (112) is located is disconnected from the electrical connection with the data monitoring unit (200).

2. A long distance line fault location system according to claim 1, characterized in that: The data monitoring unit (200) comprises: A power supply (210) is electrically connected to one end of the motion detection network (100), and the power supply (210) is used to supply power to the motion detection network (100); An information collection device (220) is electrically connected to the output end of the power supply (210), and the information collection device (220) is used to collect current information of the motion detection network (100), and determine the location of the disconnected motion detection unit (110) based on the collected current information.

3. A long distance line fault location system according to claim 2, characterized in that: The information collection device (220) determines the resistance of the connection portion between the motion detection network (100) and the data monitoring unit (200) based on the voltage output by the power supply (210) and the collected current information, and determines the location of the disconnected motion detection unit (110) based on the obtained resistance.

4. A long distance line fault location system according to claim 1, characterized in that: The transmission wire (300) comprises an upper transmission wire (310) and a lower transmission wire (320), and a load resistor (116) is electrically connected between the ends of the upper transmission wire (310) and the lower transmission wire (320) connected to each of the conductive positioning frames (112); The upper transmission wire (310) and the lower transmission wire (320) are both slidably connected to the conductive positioning frame (112).

5. A long distance line fault location system according to claim 4, characterized in that: The conductive positioning frame (112) comprises a vertical detection rod (1120) and a horizontal detection rod (1121), the upper transmission wire (310) is vertically slidably connected to the vertical detection rod (1120), and the lower transmission wire (320) is horizontally slidably connected to the horizontal detection rod (1121).

6. A long distance line fault location system according to claim 5, characterized in that: The vertical detection rod (1120) comprises a vertical conductive rod and a vertical insulating ring (1122), wherein the vertical insulating ring (1122) is arranged at the end of the vertical conductive rod, and when the upper transmission wire (310) slides onto the vertical insulating ring (1122), the electrical connection between two adjacent upper transmission wires (310) is disconnected; The horizontal detection rod (1121) comprises a horizontal conductive rod and a horizontal insulating ring (1124), wherein the horizontal insulating ring (1124) is arranged at the end of the horizontal conductive rod, and when the lower transmission wires (320) slide onto the horizontal insulating ring (1124), the electrical connection between two adjacent lower transmission wires (320) is disconnected.

7. A long distance line fault location system according to claim 6, characterized in that: The vertical detection rod (1120) further comprises a vertical resistance wire (1123), wherein the vertical resistance wire (1123) is arranged at the end of the vertical insulating ring (1122), and when the upper transmission wire (310) slides onto the vertical resistance wire (1123), the vertical resistance wire (1123) is fused, and the electrical connection between two adjacent upper transmission wires (310) is disconnected; The horizontal detection rod (1121) further comprises a horizontal resistance wire (1125), which is arranged at the end of the horizontal insulating ring (1124); when the lower transmission wire (320) slides onto the horizontal resistance wire (1125), the horizontal resistance wire (1125) is fused, and the electrical connection between two adjacent lower transmission wires (320) is disconnected.

8. A long distance line fault location system according to claim 5, characterized in that: The vertical detection rod (1120) and the horizontal detection rod (1121) are connected together to form a frame structure.

9. A long distance line fault location system according to claim 4, characterized in that: One of the two adjacent upper transmission lines (310) is slidably connected to the conductive positioning frame (112) via an upper connecting wire (111); One of the two adjacent lower transmission lines (320) is slidably connected to the conductive positioning frame (112) via a lower connecting wire (114).

10. A long distance line fault location system according to claim 4, characterized in that: A plurality of co-location buckle rings (121) are provided on both the upper transmission wire (310) and the lower transmission wire (320), and the co-location buckle rings (121) are used to connect to the line to be detected.

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