Cable sheath current on-line monitoring device

Abstract

The utility model relates to the technical field of current monitoring, and discloses a cable sheath current on-line monitoring device which comprises a cable assembly and a power assembly arranged on the cable assembly, a fixing assembly is installed on the left side of the power assembly, a monitoring assembly is arranged on the left side of the fixing assembly, and a protection assembly is installed below the monitoring assembly. When data is abnormal, a rotating motor drives a transmission shaft to rotate to drive a first rotating rod and a second rotating rod to rotate relatively, at the moment, a clamping block moves in a clamping groove, an upper pressing block and a lower pressing block slide towards the center along a sliding block groove so as to apply pressure to a cable copper core, and the effect of fixing the device is achieved; and the conductive copper sheet is driven to move rightwards along the inner wall of the protective shell through the threaded meshing relationship between the threaded column and the conductive copper sheet, so that the first conductive copper column and the second conductive copper column are communicated and grounded, and the whole device is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of current monitoring, and more specifically to an online monitoring device for cable sheath current. Background Art

[0002] The cable sheath current online monitoring device is an advanced technical device used to monitor the sheath current of power cables in real time. It is designed to ensure the stable and safe operation of the power system. This device uses advanced sensor technology and data processing software to accurately monitor the ground current and sheath ring current in real time, and promptly detect potential faults and anomalies, thereby preventing possible accidents and ensuring the continuity and safety of power supply.

[0003] During the use of the current online cable sheath current monitoring device, we found some problems. First, when these devices monitor the cable current in real time, the diameter of the cable may not match the monitoring device, resulting in the device being unable to be firmly installed on the cable. This mismatch may affect the accuracy and stability of the monitoring, thereby reducing the monitoring effect; secondly, when some strong leakage conditions are detected, the existing devices may not be able to effectively handle them in the first time, which may cause the equipment inside the cable to be damaged under the action of the current. This damage will not only affect the normal operation of the cable, but may also pose a threat to the stability and safety of the entire power system. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an online monitoring device for cable sheath current to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a cable sheath current online monitoring device, comprising a cable assembly and a power assembly arranged on the cable assembly, a fixing assembly being installed on the left side of the power assembly, a monitoring assembly being arranged on the left side of the fixing assembly, and a protection assembly being installed below the monitoring assembly;

[0006] Preferably, the cable assembly comprises a cable copper core and a cable insulation layer, wherein the cable copper core is fixedly sleeved with the cable insulation layer.

[0007] Preferably, the power assembly includes a first clamping block, a first rotating rod, a second clamping block, a third clamping block, a second rotating rod, a fourth clamping block and a rotating motor, wherein the first clamping block is movably clamped to the first rotating rod, the first rotating rod away from the first clamping block is movably clamped to the second clamping block, the third clamping block is movably clamped to the second rotating rod, the second rotating rod away from the third clamping block is movably clamped to the fourth clamping block, the rotating motor is fixedly connected to the second rotating rod, the rotating motor transmission shaft passes through the second rotating rod and is fixedly connected to the first rotating rod, at this time, the first rotating rod can be driven to rotate around the axis by the rotating motor transmission shaft to make the first rotating rod and the second rotating rod rotate relative to each other.

[0008] Preferably, the fixing assembly includes an upper pressing block, a lower pressing block, a slider groove, a rubber sleeve and a fixing column, wherein the rubber sleeve is fixedly installed under the upper pressing block, and a slider groove is provided on the right side of the fixing column. The first clamping block and the third clamping block are movably clamped to the upper pressing block, and the second clamping block and the fourth clamping block are movably clamped to the lower pressing block. At this time, the first clamping block, the first rotating rod, the second clamping block and the third clamping block move in the clamping grooves provided on the upper pressing block and the lower pressing block, so that the upper pressing block and the lower pressing block slide toward the center along the slider groove, thereby exerting pressure on the cable copper core, thereby playing the role of a fixing device.

[0009] Preferably, the monitoring component includes a bonding material block, a monitoring conductor, an insulating rubber block, a signal monitor and a shielding cover, wherein the bonding material block is fixedly installed below the monitoring conductor, and the signal monitor is fixedly installed on the insulating rubber block. The bonding material block and the insulating rubber block are both arranged on the cable copper core and bonded to the cable copper core. The shielding cover is fixedly installed on the left side of the insulating rubber block and movably sleeved on the cable copper core. At this time, the monitoring conductor obtains the detection signal through the bonding material block bonded to the cable copper core and transmits it to the signal monitor. The signal monitor internally includes a data acquisition unit, a signal conversion unit, a data processing unit and a signal transmitting unit. After the signal enters the signal monitor, it is transmitted to the signal conversion unit through the data acquisition unit to convert the electrical signal into a numerical value, and then transmitted to the signal transmitting unit through the data processing unit to transmit the data to the main control machine to obtain real-time detection data.

[0010] Preferably, the signal monitor is a current sensor ACS712, and the input end of the signal monitor is connected to the port of the cable to be monitored.

[0011] Preferably, the protection component includes a protective shell, a first conductive copper column, a conductive copper sheet, a tension spring, a power motor, a threaded column, a second conductive copper column, a conductive copper ring and a grounding wire, wherein the protective shell is fixedly installed under the shielding cover, one end of the first conductive copper column and the second conductive copper column is fixedly installed in the inner cavity of the protective shell, the power motor is fixedly installed between the first conductive copper column and the second conductive copper column, the power motor transmission shaft is fixedly sleeved with the threaded column, the threaded column is threadedly sleeved with the conductive copper sheet, and a uniformly distributed tension spring is fixedly installed on the right side of the conductive copper sheet, the end of the first conductive copper column away from the protective shell is fixedly connected to the conductive copper ring, and the end of the second conductive copper column away from the protective shell is fixedly connected to the grounding wire. When the data is abnormally large, the power motor transmission shaft drives the tension spring to rotate, and through the threaded engagement relationship between the tension spring and the conductive copper sheet, the conductive copper sheet is driven to move rightward along the inner wall of the protective shell to connect the first conductive copper column and the second conductive copper column, thereby protecting the entire device.

[0012] The technical effects and advantages of this utility model are:

[0013] When the device is monitoring, the rotating motor drives the transmission shaft to rotate, driving the first rotary rod and the second rotary rod to rotate relative to each other. At this time, the clamping block moves in the clamping slot, causing the upper pressure block and the lower pressure block to slide toward the center along the slider slot, thereby exerting pressure on the cable copper core, acting as a fixing device. When the data is abnormal, the power motor rotates, and the transmission drives the threaded column to rotate. The threaded engagement relationship between the threaded column and the conductive copper sheet drives the conductive copper sheet to move to the right along the inner wall of the protective shell, connecting the first conductive copper column and the second conductive copper column, so that it is grounded, which protects the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a partial cross-sectional schematic diagram of the overall structure of the utility model.

[0016] Figure 3 It is a partial cross-sectional schematic diagram of the other side of the overall structure of the utility model.

[0017] Figure 4 For the utility model Figure 2 Schematic diagram of the structure at point A in the middle.

[0018] Figure 5 For the utility model Figure 3 Schematic diagram of the structure at point B in the middle.

[0019] The accompanying drawings are marked as follows: 1. Cable assembly; 101. Cable copper core; 102. Cable insulation layer; 2. Power assembly; 201. First clamping block; 202. First rotary rod; 203. Second clamping block; 204. Third clamping block; 205. Second rotary rod; 206. Fourth clamping block; 207. Rotating motor; 3. Fixing assembly; 301. Upper pressing block; 302. Lower pressing block; 303. Slider slot; 304. Rubber sleeve; 305 , fixing column; 4, monitoring component; 401, bonding material block; 402, monitoring conductor; 403, insulating rubber block; 404, signal monitor; 405, shielding cover; 5, protection component; 501, protective shell; 502, first conductive copper column; 503, conductive copper sheet; 504, tension spring; 505, power motor; 506, threaded column; 507, second conductive copper column; 508, conductive copper ring; 509, grounding wire. DETAILED DESCRIPTION

[0020] The following will combine the drawings in the present invention to clearly and completely describe the technical solutions in the present invention. In addition, the forms of the various structures recorded in the following embodiments are merely examples. The cable sheath current online monitoring device involved in the present invention is not limited to the various structures recorded in the following embodiments. All other implementations obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] Reference Figure 1 and Figure 2 The utility model provides an online monitoring device for cable sheath current, comprising a cable assembly 1 and a power assembly 2 arranged on the cable assembly 1, a fixing assembly 3 being installed on the left side of the power assembly 2, a monitoring assembly 4 being arranged on the left side of the fixing assembly 3, and a protection assembly 5 being installed below the monitoring assembly 4;

[0022] Reference Figure 1 and Figure 2 The cable assembly 1 includes a cable copper core 101 and a cable insulation layer 102, wherein the cable copper core 101 is fixedly sleeved with the cable insulation layer 102;

[0023] Reference Figure 2 and Figure 4, the power assembly 2 includes a first clamping block 201, a first rotating rod 202, a second clamping block 203, a third clamping block 204, a second rotating rod 205, a fourth clamping block 206 and a rotating motor 207, wherein the first clamping block 201 is movably clamped to the first rotating rod 202, one end of the first rotating rod 202 away from the first clamping block 201 is movably clamped to the second clamping block 203, the third clamping block 204 is movably clamped to the second rotating rod 205, and one end of the second rotating rod 205 away from the third clamping block 204 is movably clamped to the fourth clamping block 206, the rotating motor 207 is fixedly connected to the second rotating rod 205, and the transmission shaft of the rotating motor 207 passes through the second rotating rod 205 and is fixedly connected to the first rotating rod 202. At this time, the first rotating rod 202 can be driven to rotate around the axis by the transmission shaft of the rotating motor 207, so that the first rotating rod 202 and the second rotating rod 205 rotate relative to each other;

[0024] Reference Figure 1-3 When the cam 301 is in the unlock state, the locking cam 302 is in the unlock state, and the locking cam 303 is in the unlock state, so that the cam 301 is unlocked and the winch 301 is in the unlock state.

[0025] Reference Figure 1-3 The monitoring component 4 includes a bonding material block 401, a monitoring conductor 402, an insulating rubber block 403, a signal monitor 404 and a shielding cover 405. The signal monitor 404 is wrapped by the shielding cover 405. The bonding material block 401 is fixedly installed below the monitoring conductor 402, and the signal monitor 404 is fixedly installed on the insulating rubber block 403. The bonding material block 401 and the insulating rubber block 403 are both arranged on the cable copper core 101 and bonded to the cable copper core 101. The shielding cover 405 is fixedly installed on the left side of the insulating rubber block 403. The monitoring conductor 402 obtains the detection signal through the bonding material block 401 that is bonded to the cable copper core 101, and transmits it to the signal monitor 404. The signal monitor 404 includes a data acquisition unit, a signal conversion unit, a data processing unit and a signal transmitting unit. After the signal enters the signal monitor 404, it is transmitted to the signal conversion unit through the data acquisition unit to convert the electrical signal into a numerical value, and then transmitted to the signal transmitting unit through the data processing unit to transmit the data to the main control machine to obtain real-time detection data.

[0026] Preferably, the signal monitor 404 is a current sensor ACS712, and the input end of the signal monitor is connected to the port of the cable to be monitored. The signal monitor is a Hall current sensor, which is used to monitor the real-time state of the current after being connected to the circuit. It can monitor AC or DC and is widely used in overcurrent fault protection. It is a sensor type with a stable structure and mature technology. In the present utility model, the application of this structure is not limited to this type of sensor. The data collected is transmitted to the handheld smart terminal of the power personnel or the online fixed terminal of the substation in the form of wired electrical signals or radio signals. Through reasonable sampling, calculation and analysis of the power monitoring system, the collected data is processed in time to determine the cable status.

[0027] Reference Figure 2 and Figure 5 The protection assembly 5 includes a protection shell 501, a first conductive copper column 502, a conductive copper sheet 503, a tension spring 504, a power motor 505, a threaded column 506, a second conductive copper column 507, a conductive copper ring 508 and a grounding wire 509, wherein the protection shell 501 is fixedly installed below the shielding cover 405, one end of the first conductive copper column 502 and the second conductive copper column 507 is fixedly installed in the inner cavity of the protection shell 501, the power motor 505 is fixedly installed between the first conductive copper column 502 and the second conductive copper column 507, the drive shaft of the power motor 505 is fixedly sleeved with the threaded column 506, and the threaded column 506 is threadedly sleeved with the conductive copper sheet 5 03. A uniformly distributed tension spring 504 is fixedly installed on the right side of the conductive copper sheet 503. The end of the first conductive copper column 502 away from the protective shell 501 is fixedly connected to the conductive copper ring 508, and the end of the second conductive copper column 507 away from the protective shell 501 is fixedly connected to the grounding wire 509. When the data is abnormally large, the transmission shaft of the power motor 505 drives the tension spring 504 to rotate, and through the threaded engagement relationship between the tension spring 504 and the conductive copper sheet 503, the conductive copper sheet 503 is driven to move to the right along the inner wall of the protective shell 501 to connect the first conductive copper column 502 and the second conductive copper column 507, thereby protecting the entire device.

[0028] The working principle of the present invention is as follows: when the device is monitoring, the rotating motor 207 drives the transmission shaft to rotate and drives the first rotary rod 202 and the second rotary rod 205 to rotate relative to each other. At this time, the first clamping block 201, the first rotary rod 202, the second clamping block 203 and the third clamping block 204 move in the clamping grooves provided on the upper pressing block 301 and the lower pressing block 302, so that the upper pressing block 301 and the lower pressing block 302 slide toward the center along the slider groove 303, thereby applying pressure to the cable copper core 101, playing the role of a fixing device. After the detection starts, the monitoring conductor 402 obtains the detection signal through the bonding material block 401 that is bonded to the cable copper core 101, and transmits it to the signal monitor 404. After the signal enters the signal monitor 404, it is transmitted to the signal conversion unit through the data acquisition unit to convert the electrical signal into a numerical value, and then transmitted to the signal transmission unit through the data processing unit to transmit the data to the main control machine to obtain real-time detection data. When the converted data is abnormally large, the data processing unit determines that the data is abnormal and sends an instruction to the protection component 5. At this time, the power motor 505 drive shaft drives the threaded column 506 to rotate, and through the threaded engagement relationship between the threaded column 506 and the conductive copper sheet 503, drives the conductive copper sheet 503 to move to the right along the inner wall of the protective shell 501 to connect the first conductive copper column 502 and the second conductive copper column 507, so that it is grounded, which plays a protective role for the entire device.

[0029] Finally, a few points should be explained: First, it should be noted that in the description of this application, unless otherwise specified or limited, the terms "mounted", "connected", and "connected" should be understood in a broad sense, and can refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described objects changes, the relative positional relationship may change.

[0030] Secondly, the drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the present invention can be combined with each other.

[0031] Finally, 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 cable sheath current online monitoring device, comprising a cable assembly (1) and a power assembly (2) arranged on the cable assembly (1), characterized in that: A fixing assembly (3) is installed on the left side of the power assembly (2), a monitoring assembly (4) is provided on the left side of the fixing assembly (3), a protection assembly (5) is installed below the monitoring assembly (4), the monitoring assembly (4) comprises a shielding cover (405) and a signal monitor (404) wrapped by the shielding cover (405), the protection assembly (5) comprises a protection shell (501), a first conductive copper column (502), a conductive copper sheet (503), a tension spring (504), a power motor (505), a threaded column (506), a second conductive copper column (507), a conductive copper ring (508) and a grounding wire (509), wherein the protection shell (501) is fixedly installed below the shielding cover (405), the first conductive copper sheet (503), a conductive copper ring (508) and a grounding wire (509). One end of the copper column (502) and the second conductive copper column (507) are fixedly mounted in the inner cavity of the protective shell (501); the power motor (505) is fixedly mounted between the first conductive copper column (502) and the second conductive copper column (507); a transmission shaft of the power motor (505) is fixedly sleeved with a threaded column (506); the threaded column (506) is threadedly sleeved with a conductive copper sheet (503); a uniformly distributed tension spring (504) is fixedly mounted on the right side of the conductive copper sheet (503); an end of the first conductive copper column (502) away from the protective shell (501) is fixedly connected to a conductive copper ring (508); and an end of the second conductive copper column (507) away from the protective shell (501) is fixedly connected to a grounding wire (509).

2. The cable sheath current online monitoring device according to claim 1, characterized in that: The cable assembly (1) comprises a cable copper core (101) and a cable insulation layer (102), wherein the cable copper core (101) is fixedly sleeved on the cable insulation layer (102).

3. The cable sheath current online monitoring device according to claim 2, characterized in that: The power assembly (2) comprises a first clamping block (201), a first rotating rod (202), a second clamping block (203), a third clamping block (204) and a second rotating rod (205), wherein the first clamping block (201) is movably clamped to the first rotating rod (202), an end of the first rotating rod (202) away from the first clamping block (201) is movably clamped to the second clamping block (203), and the third clamping block (204) is movably clamped to the second rotating rod (205).

4. The cable sheath current online monitoring device according to claim 3, characterized in that: The power assembly (2) further comprises a fourth clamping block (206) and a rotating motor (207), wherein one end of the second rotating rod (205) away from the third clamping block (204) is movably clamped to the fourth clamping block (206), the rotating motor (207) is fixedly connected to the second rotating rod (205), and a transmission shaft of the rotating motor (207) passes through the second rotating rod (205) and is fixedly connected to the first rotating rod (202).

5. The cable sheath current online monitoring device according to claim 4, characterized in that: The fixing assembly (3) comprises an upper pressing block (301), a lower pressing block (302), a slider groove (303), a rubber sleeve (304) and a fixing column (305), wherein the rubber sleeve (304) is fixedly installed below the upper pressing block (301), a slider groove (303) is provided on the right side of the fixing column (305), the first clamping block (201) and the third clamping block (204) are movably clamped to the upper pressing block (301), and the second clamping block (203) and the fourth clamping block (206) are movably clamped to the lower pressing block (302).

6. The cable sheath current online monitoring device according to claim 2, characterized in that: The monitoring assembly (4) further comprises a bonding material block (401), a monitoring conductor (402), and an insulating rubber block (403), wherein the bonding material block (401) is fixedly mounted below the monitoring conductor (402), the signal monitor (404) is fixedly mounted on the insulating rubber block (403), the bonding material block (401) and the insulating rubber block (403) are both arranged on the cable copper core (101) and bonded to the cable copper core (101), and the shielding cover (405) is fixedly mounted on the left side of the insulating rubber block (403) and movably sleeved to the cable copper core (101).

7. The cable sheath current online monitoring device according to claim 1, characterized in that: The signal monitor (404) is a current sensor ACS712, and the input end of the signal monitor is connected to the port of the cable to be monitored.

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