Signal collector of buried cable

Abstract

The invention provides a buried cable signal collector which comprises a shell, an induction coil, a mainboard, a central processing unit, a spring antenna, a stainless steel cover plate and a lithium battery, after the shell is integrally buried in soil, a buried cable penetrates through the induction coil, when current flows through the buried cable, the induction coil can generate induction current, and when the current flows through the buried cable, the induction current is transmitted to the mainboard. After the central processing unit processes the induction current, the induction current can be sent out in a message form through the spring antenna, so that a nearby detection site can receive data signals to carry out fault positioning analysis, and as the signal acquisition can be directly carried out on the buried cable, the link of searching the position of the buried cable can be omitted, and the fault detection efficiency is improved. And the current generated by the induction coil can be converted into electric energy under the action of the mainboard and the central processing unit, the electric energy charges the lithium battery, the lithium battery can supply power to electric appliances in the shell, and the endurance of the whole signal collector is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of electric power equipment, and in particular to a signal collector for an underground cable. Background Art

[0002] With the continuous advancement of the power system, the requirements for the safety and stability of the power system are becoming higher and higher. The laying range of the distribution network is getting larger and larger, and the failure rate is also increasing year by year. In particular, the larger the laying range of some underground concealed engineering networks, the more difficult it is to find the fault point. Once a fault occurs, it takes a lot of time to explore and inspect. Since the buried position of the buried cable is unknown, before the fault point needs to be located, it is often necessary to locate the buried cable, and then use a non-contact signal collector to collect data above the buried cable, and then perform fault analysis based on the collected data signal. However, the depth of the buried cable is different, and the soil will affect the transmission of the signal, and it cannot be guaranteed that the accurate cable signal can be collected. At the same time, since the position of the buried cable is unknown, it takes a lot of time to determine the position and path of the buried cable, resulting in low efficiency in fault analysis and positioning. Summary of the invention

[0003] In view of this, the present invention proposes a signal collector for an underground cable, which can be buried underground together with the underground cable, so as to conveniently collect the signal of the buried cable and transmit it to the outside, so as to facilitate rapid fault location and analysis.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A signal collector for an underground cable comprises a shell, an induction coil, a mainboard, a central processing unit, a spring antenna, a stainless steel cover plate and a lithium battery. The induction coil is arranged on one side of the shell for the underground cable to pass through. The mainboard is installed in the shell. The central processing unit, the spring antenna and the lithium battery are installed on the mainboard. The stainless steel cover plate is installed on a side of the shell away from the induction coil. One end of the spring antenna is in contact with the stainless steel cover plate. The central processing unit is electrically connected to the induction coil, the spring antenna and the lithium battery respectively.

[0006] Preferably, it also includes a ground-level heat sink, which is installed on the mainboard and has one side in contact with the stainless steel cover plate.

[0007] Preferably, the interior of the housing is cast and sealed by insulating resin, and the ground-level heat sink and the spring antenna are in contact with the stainless steel cover through the insulating resin.

[0008] Preferably, it also includes a self-inspection mechanism, which includes a storage box, a mobile trolley, a reset roller, a self-inspection wire, a spring wire, a plug-in male end, a first electric push rod, a plug-in female end, a storage box, a connecting wire and an electric control switch, the storage box and the storage box are respectively arranged on both sides of the shell, the outer wall of the storage box and the outer wall of the shell are provided with a track, the track extends to one side of the induction coil, the mobile trolley is arranged on the track, the storage box and the mobile trolley are provided with a through hole on the opposite outer walls, the reset roller is arranged in the storage box, the self-inspection wire is wound in the reset roller, one end of the self-inspection wire passes through the through hole and extends into the mobile trolley, The plug-in male end is located in the moving trolley, the spring wire connects the plug-in male end and the end of the self-test wire, the first electric push rod is arranged in the moving trolley, and its output shaft is connected to the outer wall of the plug-in male end, the plug-in female end is arranged in the storage box, and a through hole is arranged on the outer wall of the storage box opposite to the moving trolley, and the connection line of the through hole passes through the inside of the induction coil, the plug-in male end and the plug-in female end are located on the inner side of the through hole, the connecting wire connects the lithium battery with the self-test wire and the lithium battery with the plug-in female end, the electric control switch is arranged on the connecting wire, and the central processing unit is electrically connected to the moving trolley, the first electric push rod and the electric control switch respectively.

[0009] Preferably, the self-checking mechanism further comprises a one-way diaphragm, and the one-way diaphragm is arranged in the passage hole.

[0010] Preferably, the self-inspection mechanism further comprises a mounting bracket, and the reset roller is arranged on the mounting bracket.

[0011] Preferably, the self-inspection mechanism also includes a rotating motor and an auger. The rotating motor is arranged on the outer wall of the moving vehicle and is located on the upper and lower sides of the through hole. The rotating motor is connected to the end of the auger, and the central processing unit is electrically connected to the rotating motor.

[0012] Preferably, the self-inspection mechanism further comprises a second electric push rod, which is arranged on the outer wall of the moving trolley, and whose output shaft is connected to the housing of the rotating motor, and the central processing unit is electrically connected to the second electric push rod.

[0013] Preferably, the self-inspection mechanism further comprises a lifting plate, the output shaft of the second electric push rod is connected to one side of the lifting plate, and the rotary motor is arranged on a side of the lifting plate away from the second electric push rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] A signal collector for an underground cable of the present invention is buried in the soil together with the underground cable, wherein the underground cable passes through an induction coil. When current flows through the buried cable, the induction coil generates an induced current, which is processed by a boost, rectifier and charging circuit to supply energy to a potassium battery to ensure sufficient battery life. At the same time, the induced current and fault signal generated by the induction coil are processed by a central processing unit and then transmitted to the outside through a spring antenna, so that a nearby detection site can receive the signal for fault location analysis. Since there is no need to find the position of the buried cable, a lot of time can be saved and the efficiency of fault location analysis can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of a signal collector for an underground cable of the present invention;

[0018] Figure 2 It is a schematic diagram of the connection structure between the self-test mechanism and the housing of a signal collector for an underground cable of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a storage box of a signal collector for an underground cable of the present invention;

[0020] Figure 4 A schematic diagram of a storage box for a signal collector of an underground cable according to the present invention

[0021] In the figure, 1. shell; 2. induction coil; 3. main board; 4. central processing unit; 5. spring antenna; 6. stainless steel cover; 7. lithium battery; 8. ground-level heat sink; 9. storage box; 10. moving trolley; 11. reset roller; 12. self-test wire; 13. spring wire; 14. plug-in male end; 15. first electric push rod; 16. plug-in female end; 17. storage box; 18. connecting wire; 19. electric switch; 20. track; 21. through hole; 22. through hole; 23. one-way diaphragm; 24. mounting bracket; 25. rotating motor; 26. auger; 27. second electric push rod; 28. lifting plate. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 4 The present invention provides a signal collector for an underground cable, comprising a housing 1, an induction coil 2, a mainboard 3, a central processing unit 4, a spring antenna 5, a stainless steel cover plate 6 and a lithium battery 7. The induction coil 2 is arranged on one side of the housing 1 for passing the underground cable. The mainboard 3 is installed in the housing 1. The central processing unit 4, the spring antenna 5 and the lithium battery 7 are installed on the mainboard 3. The stainless steel cover plate 6 is installed on the side of the housing 1 away from the induction coil 2. One end of the spring antenna 5 is in contact with the stainless steel cover plate 6. The central processing unit 4 is electrically connected to the induction coil 2, the spring antenna 5 and the lithium battery 7 respectively.

[0024] A signal collector for an underground cable of the present invention is buried in the soil and collects signals from the underground cable, wherein the underground cable passes through an induction coil 2 and collects signals from the underground cable. When current passes through the buried cable, the induction coil 2 can generate an induced current, and the generated induced current will be transmitted to a central processing unit 4. Under the processing of a mainboard 3 and a central processing unit 4, the induced current can be sent outwardly through a spring antenna 5 in the form of a message. Since the spring antenna 5 is in contact with a stainless steel cover plate 6, the signal can be transmitted outwardly through the stainless steel cover plate 6. A monitoring station located nearby can receive the data signal and perform fault location analysis on the buried cable. Since there is no need to find the position and direction of the buried cable, the signal can be quickly acquired, thereby improving the efficiency and accuracy of the fault location analysis.

[0025] A lithium battery 7 is arranged in the housing 1, and the lithium battery 7 is used to provide power to the mainboard 3, the central processing unit 4 and the spring antenna 5. When the induction coil 2 generates an induced current, the power can be transmitted to the lithium battery 7 for charging after being processed by the internal circuits of the central processing unit 4 and the mainboard 3, so that the lithium battery 7 can power the electrical components in the housing 1 for a long time.

[0026] Preferably, a ground-level heat sink 8 is further included, and the ground-level heat sink 8 is installed on the main board 3 , and one side of the ground-level heat sink 8 is in contact with the stainless steel cover plate 6 .

[0027] After the ground-level heat sink 8 changes contact with the stainless steel, the heat inside the mainboard 3 and the housing 1 can be transferred to the stainless steel cover 6 and then transferred outwards, thereby preventing heat from accumulating in the housing 1 and causing damage to electrical components.

[0028] Preferably, the interior of the housing 1 is cast and sealed by insulating resin, and the ground-level heat sink 8 and the spring antenna 5 are in contact with the stainless steel cover plate 6 through the insulating resin.

[0029] The insulating resin can seal the components inside the housing 1 to prevent moisture in the soil and insects from entering the housing 1 .

[0030] Preferably, it also includes a self-inspection mechanism, which includes a storage box 9, a moving trolley 10, a reset roller 11, a self-inspection wire 12, a spring wire 13, a plug-in male end 14, a first electric push rod 15, a plug-in female end 16, a storage box 17, a connecting wire 18 and an electric control switch 19, wherein the storage box 17 and the storage box 9 are respectively arranged on both sides of the shell 1, and the outer wall of the storage box 9 and the outer wall of the shell 1 are provided with a track 20, and the track 20 extends to one side of the induction coil 2, the moving trolley 10 is arranged on the track 20, and the storage box 9 and the moving trolley 10 are provided with a through hole 21 on the opposite outer walls, the reset roller 11 is arranged in the storage box 9, the self-inspection wire 12 is wound in the reset roller 11, and one end thereof passes through the through hole 21 and extends into the moving trolley 10, The plug-in male end 14 is located in the moving cart 10, the spring wire 13 connects the plug-in male end 14 and the end of the self-test wire 12, the first electric push rod 15 is arranged in the moving cart 10, and its output shaft is connected to the outer wall of the plug-in male end 14, the plug-in female end 16 is arranged in the storage box 17, and the storage box 17 is provided with a through hole 22 on the outer wall opposite to the moving cart 10, and the connection line of the through hole 22 passes through the inside of the induction coil 2, the plug-in male end 14 and the plug-in female end 16 are located on the inner side of the through hole 22, the connecting wire 18 connects the lithium battery 7 with the self-test wire 12 and the lithium battery 7 with the plug-in female end 16, the electric control switch 19 is arranged on the connecting wire 18, and the central processor 4 is electrically connected to the moving cart 10, the first electric push rod 15 and the electric control switch 19 respectively.

[0031] During long-term use, some components in the signal collector may be damaged. In order to ensure the normal signal collection, a self-test mechanism is set on the shell 1, wherein a storage box 9 and a storage box 17 are set on both sides of the shell 1, and the induction coil 2 is located between the storage box 9 and the storage box 17. A movable moving trolley 10 is set on one side of the storage box 9, and a self-test wire 12 wound on a reset roller 11 is set in the storage box 9. The end of the self-test wire 12 extends to the outside of the storage box 9 and is moved from the moving trolley 11. 0 extends into the interior, the end of the self-test wire 12 inside the moving trolley 10 is connected to the plug-in male end 14 through the spring wire 13, and the output shaft of the first electric push rod 15 is connected to the plug-in male end 14. Driven by the first electric push rod 15, the plug-in male end 14 can pass through the through hole 22 to the outside of the moving trolley 10, and when the moving trolley 10 moves along the storage box 9 and the track 20 on the housing 1, the self-test wire 12 will be pulled out of the storage box 9, and when the moving trolley 10 moves to the induction coil 2 After one side, the movement can be stopped. At this time, the first electric push rod 15 pushes the plug-in male end 14 out of the through hole 22, and makes the plug-in male end 14 extend into the storage box 17 through the through hole 22 of the storage box 17. The plug-in male end 14 will be connected to the plug-in female end 16. At this time, the self-test wire 12 will pass through the induction coil 2. After the connection is completed, the central processing unit 4 can control the electric control switch 19 to turn on, so that the electric energy of the lithium battery 7 can be transmitted to the self-test wire 12. When current passes through the self-test wire 12, if the induction coil 2 is normal, an induced current will be generated and transmitted to the central processing unit 4. After processing, the central processing unit 4 and the main board 3 can send the signal outward in the form of a message through the spring antenna 5. If a component in one of the links is damaged, the nearby monitoring station will not receive the message signal, so the self-test of the entire signal collector can be realized. When the component is damaged, the buried cable can be located in time, and the signal collector can be repaired and replaced to avoid the inability to collect signals when a fault occurs to realize fault location analysis.

[0032] Preferably, the self-checking mechanism further includes a one-way diaphragm 23 , and the one-way diaphragm 23 is arranged in the through hole 22 .

[0033] The one-way diaphragm 23 is used to seal the passage hole 22, and only allows the male end 14 to push the one-way diaphragm 23 to pass out of the moving cart 10 or extend into the storage box 17, so as to prevent soil and the like from entering the moving cart 10 and the storage box 17.

[0034] Preferably, the self-checking mechanism further includes a mounting bracket 24 , and the reset roller 11 is disposed on the mounting bracket 24 .

[0035] The mounting bracket 24 is used to install the reset roller 11, and a torsion spring (not shown in the figure) is also provided on the reset roller 11. When the self-inspection is completed, the moving trolley 10 will move back, and under the action of the torsion spring, the reset roller 11 can rotate and reset, thereby winding the self-inspection wire 12 thereon for recovery.

[0036] Preferably, the self-inspection mechanism also includes a rotating motor 25 and an auger 26. The rotating motor 25 is arranged on the outer wall of the moving vehicle 10 and is located on the upper and lower sides of the through hole 22. The rotating motor 25 is connected to the end of the auger 26, and the central processor 4 is electrically connected to the rotating motor 25.

[0037] During the movement of the mobile cart 10, the rotating motor 25 can drive the auger 26 to rotate, and the auger 26 can excavate the soil on the way forward to prevent the soil from blocking the movement of the mobile cart 10, thereby ensuring that the mobile cart 10 can move smoothly to the side of the induction coil 2. At the same time, the auger 26 can also excavate the soil near the buried cable in the induction coil 2, so that the male end 14 can pass through the inside of the induction coil 2 and extend into the storage box 17.

[0038] Preferably, the self-inspection mechanism also includes a second electric push rod 27, which is arranged on the outer wall of the moving cart 10, and its output shaft is connected to the housing of the rotating motor 25, the central processor 4 is electrically connected to the second electric push rod 27, and the self-inspection mechanism also includes a lifting plate 28, the output shaft of the second electric push rod 27 is connected to one side of the lifting plate 28, and the rotating motor 25 is arranged on the side of the lifting plate 28 away from the second electric push rod 27.

[0039] The second electric push rod 27 is mainly used to adjust the height of the rotating motor 25. After the rotating motor 25 is driven by the lifting plate 28 to adjust the height, the auger 26 can be moved to different positions to facilitate excavation of soil at different positions and facilitate the movement of the mobile vehicle 10.

[0040] 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 principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A signal collector for an underground cable, characterized in that: It includes a shell, an induction coil, a mainboard, a central processing unit, a spring antenna, a stainless steel cover plate and a lithium battery. The induction coil is arranged on one side of the shell for the underground cable to pass through. The mainboard is installed in the shell. The central processing unit, the spring antenna and the lithium battery are installed on the mainboard. The stainless steel cover plate is installed on the side of the shell away from the induction coil. One end of the spring antenna is in contact with the stainless steel cover plate. The central processing unit is electrically connected to the induction coil, the spring antenna and the lithium battery respectively.

2. The signal collector of an underground cable according to claim 1, characterized in that: It also includes a ground-level heat sink, which is installed on the mainboard and has one side in contact with the stainless steel cover plate.

3. The signal collector of an underground cable according to claim 2, characterized in that: The interior of the shell is cast and sealed by insulating resin, and the ground-level heat sink and the spring antenna pass through the insulating resin and contact the stainless steel cover plate.

4. The signal collector of an underground cable according to claim 1, characterized in that: It also includes a self-inspection mechanism, which includes a storage box, a mobile trolley, a reset roller, a self-inspection wire, a spring wire, a plug-in male end, a first electric push rod, a plug-in female end, a storage box, a connecting wire and an electric control switch. The storage box and the storage box are respectively arranged on both sides of the shell, and the outer wall of the storage box and the outer wall of the shell are provided with a track, and the track extends to one side of the induction coil. The mobile trolley is arranged on the track, and the storage box and the mobile trolley are provided with a through hole on the opposite outer walls. The reset roller is arranged in the storage box, and the self-inspection wire is wound in the reset roller, and one end of the self-inspection wire passes through the through hole and extends into the mobile trolley. The male end is located in the moving trolley, the spring wire connects the plug-in male end and the end of the self-test wire, the first electric push rod is arranged in the moving trolley, and its output shaft is connected to the outer wall of the plug-in male end, the plug-in female end is arranged in the storage box, and a through hole is arranged on the outer wall of the storage box opposite to the moving trolley, and the connection line of the through hole passes through the inside of the induction coil, the plug-in male end and the plug-in female end are located on the inner side of the through hole, the connecting wire connects the lithium battery with the self-test wire and the lithium battery with the plug-in female end, the electric control switch is arranged on the connecting wire, and the central processing unit is electrically connected to the moving trolley, the first electric push rod and the electric control switch respectively.

5. The signal collector of an underground cable according to claim 4, characterized in that: The self-checking mechanism further comprises a one-way diaphragm, and the one-way diaphragm is arranged in the passage hole.

6. The signal collector of an underground cable according to claim 4, characterized in that: The self-checking mechanism further comprises a mounting bracket, and the reset roller is arranged on the mounting bracket.

7. The signal collector of an underground cable according to claim 4, characterized in that: The self-inspection mechanism also includes a rotating motor and an auger. The rotating motor is arranged on the outer wall of the moving trolley and is located at the upper and lower sides of the passage hole. The rotating motor is connected to the end of the auger, and the central processing unit is electrically connected to the rotating motor.

8. The signal collector of an underground cable according to claim 7, characterized in that: The self-checking mechanism also includes a second electric push rod, which is arranged on the outer wall of the moving trolley, and the output shaft of the second electric push rod is connected to the housing of the rotating motor, and the central processing unit is electrically connected to the second electric push rod.

9. The signal collector of an underground cable according to claim 8, characterized in that: The self-inspection mechanism further comprises a lifting plate, the output shaft of the second electric push rod is connected to one side of the lifting plate, and the rotary motor is arranged on a side of the lifting plate away from the second electric push rod.

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