A multifunctional distribution network line loss detection device

Abstract

The present invention discloses a multifunctional distribution network line loss detection device, which relates to the technical field of power detection, and includes a multifunctional detection device body. A voltage transformer is arranged near the top of the inner wall of the multifunctional detection device body. For this multifunctional distribution network line loss detection device, when it is necessary to use the multifunctional distribution network line loss detection device to measure the variable electricity of a cable, first install the multifunctional detection device body at the node where the main line intersects with multiple important branch lines, and then move the clamping tools to the connections between each cable and the wiring head body and the external cable respectively, and clamp the cables to respectively detect whether the wiring between multiple external cable UI wiring head bodies is accurate, so as to prevent the occurrence of cable wiring errors, and solve the problem in the prior art that the distribution network line loss detection device is prone to wiring errors, resulting in the inability to determine the fault location.

Description

Technical Field

[0001] The present invention relates to the technical field of power detection, and particularly to a multifunctional distribution network line loss detection device. Background Technique

[0002] A multifunctional distribution network line loss detection device is a device used to monitor and evaluate the power loss in a distribution network. This device helps power companies identify the location and degree of line loss in the distribution network by real-time monitoring of electrical variables, voltage, and other relevant parameters. Line loss refers to the power loss caused by the resistance of the wire, poor contact, and transformer loss during the power transmission process. In a modern intelligent power system, the line loss detection device is an important part of achieving efficient management.

[0003] Currently, when a multifunctional distribution network line loss detection device measures the variable electricity quantity of a cable, it is mostly installed at the node where the main line intersects with an important branch line, so as to master the line loss situation of each line and facilitate problem positioning. During the connection process between the distribution network line loss detection device and multiple cables, since there are many cables connected to the detection device, and most existing distribution network line loss detection devices do not have a device for identifying and detecting different cable joints, it is easy for staff to make wiring mistakes during the connection process between the cable and the detection device, which may further lead to signal chaos. When a cable fails at a certain place, the multifunctional distribution network line loss detection device is likely to read incorrect data, resulting in the real-time monitoring data of the multifunctional distribution network line loss detection device not matching the actual situation and being unable to accurately judge the location of the fault.

[0004] Therefore, we propose a multifunctional distribution network line loss detection device to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of the present invention is to provide a multifunctional distribution network line loss detection device to solve the problem that the distribution network line loss detection device is prone to wiring mistakes, resulting in the inability to judge the location of the fault as mentioned in the above background technique.

[0006] To achieve the above object, the present invention provides the following technical solution: A multifunctional distribution network line loss detection device, including a multifunctional detection device body. A voltage transformer is provided at a position close to the top of the inner wall of the multifunctional detection device body, and a current transformer is provided at a position close to the top of the inner wall of the multifunctional detection device body. A plurality of terminal block bodies are provided at a position close to the center of the outer surface of the multifunctional detection device body. A clamping detection component is provided at a position close to the bottom of the outer surface of the multifunctional detection device body. A positioning component is provided on the outer surface of the clamping detection component. The positioning component includes a mounting plate and a lifting block. A chute is opened at a position close to the center of the top of the mounting plate. Support blocks are fixedly installed at positions close to both side edges of the top of the mounting plate by screws. The clamping detection component includes two tooth rows. Clamping blocks are fixedly connected to one ends of the two tooth rows. A generator body for detecting whether the contact of the line loss detection device and the cable joint is correctly connected is provided at a position close to the top of the outer surface of the lifting block. A clamping tool for connecting the generator body and the cable is provided at the output end of the generator body through a wire.

[0007] Preferably, a first forward and reverse motor is fixedly installed on the outer surface of one of the support blocks by screws. A ball screw is fixedly connected to the output end of the first forward and reverse motor. A sliding frame is fixedly connected to the outer surface of the ball screw. A second forward and reverse motor is fixedly connected to the top of the sliding frame by screws. A threaded rod is fixedly connected to the output end of the second forward and reverse motor.

[0008] Preferably, the outer surface of the threaded rod is threadedly connected to the inner wall of the lifting block. An input shaft is fixed to the bottom end of the threaded rod. A speed reducer is provided at the bottom end of the input shaft. The output end of the speed reducer is fixedly connected to an output shaft.

[0009] Preferably, a driving gear is fixedly installed at the bottom end of the output shaft. Fixed rods are fixedly installed at positions close to both side edges of the outer surface of the lifting block. Driven gears are rotatably sleeved on the outer surfaces of the two fixed rods close to the bottom ends.

[0010] Preferably, the outer surface of the mounting plate is fixedly connected to the outer surface of the multifunctional detection device body by screws. The two ends of the ball screw respectively penetrate through the outside of the two support blocks movably. The two ends of the threaded rod respectively penetrate through the opposite outside of the sliding frame movably.

[0011] Preferably, the outer surface of the sliding frame is slidably connected to the inside of the chute. The outer surface of the lifting block is slidably connected to the inner wall of the sliding frame. The outer surface of the speed reducer is fixedly connected to the inner wall of the lifting block through an auxiliary plate. The outer surfaces of the two driven gears are both meshed with the outer surface of the driving gear.

[0012] Preferably, the outer surfaces of the two driven gears are respectively meshed and connected with the outer surfaces of the two tooth rows, the outer surfaces of the two tooth rows are respectively slidably connected with the opposite inner walls of the lifting block, and the opposite inner walls of the lifting block are both provided with rolling balls.

[0013] Preferably, the outer surfaces of the two rolling balls are respectively slid with the inner walls of the two tooth rows, the outer surface of the clamping tool is fixedly connected with the outer surface of the lifting block through screws, and the clamping tool is arranged between the outer surfaces of the two clamping blocks.

[0014] Preferably, a fixing component for fixing the cable is arranged at the outer surface of the multi-functional detection device body near the bottom. The fixing component includes a pressure-resistant plate. The outer surface of the pressure-resistant plate is fixedly connected with the outer surface of the multi-functional detection device body through a plurality of screws. A plurality of bearing blocks are fixed on the top of the pressure-resistant plate, and springs are arranged on the outer surfaces of the plurality of bearing blocks.

[0015] Preferably, a positioning block for clamping the cable is arranged at one end of each of the plurality of springs. One ends of the plurality of springs are respectively fixedly connected with the outer surfaces of the plurality of bearing blocks, and the other ends of the plurality of springs are respectively fixedly connected with the outer surfaces of the plurality of positioning blocks.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. When it is necessary to use the multi-functional distribution network line loss detection device to measure the variable power of the cable, first install the multi-functional detection device body at the node where the main line intersects with multiple important branch lines, and then move the clamping tools to the connection points of each cable with the wiring head body and the external cable respectively, and clamp the cables to respectively detect whether the wiring between the multiple external cables and the wiring head body is accurate, preventing the occurrence of cable wiring errors, and solving the problem in the prior art that the distribution network line loss detection device is prone to wiring errors and cannot judge the fault location.

[0018] 2. During the connection process of the multiple external cables and the wiring head body, in order to prevent the cable connection from loosening and resulting in inaccurate cable line loss detection, before the multiple external cables are respectively inserted into the inside of the wiring head body, first insert them between the two positioning blocks corresponding to the wiring head body. When the cable is inserted into the inside of the wiring head body, the two positioning blocks can squeeze and fix the cable, ensuring the stability of the cable connection, and thus further improving the accuracy of the multi-functional detection device body when detecting the cable line loss.

[0019] 3. After all the external cables in the main body of the multifunctional detection device are connected, first start the voltage transformer and current transformer. The current transformer can monitor the change of current in real time. When the current changes, the line loss detection device can analyze the impact of the current change on the line loss by combining the data of the voltage transformer. The real-time current monitoring data provided by the current transformer helps to timely understand the dynamic change of the line loss, so as to better manage the operation and loss of the distribution network. Through the cooperation of the voltage transformer and the current transformer, the accurate measurement of the power of the distribution network is realized. Description of the Drawings

[0020] Figure 1 Front perspective view of a multifunctional distribution network line loss detection device of the present invention;

[0021] Figure 2 Partial perspective view of the multifunctional detection device main body of a multifunctional distribution network line loss detection device of the present invention;

[0022] Figure 3 Partial perspective view of the positioning component of a multifunctional distribution network line loss detection device of the present invention;

[0023] Figure 4 Expanded partial perspective view of the sliding frame structure of a multifunctional distribution network line loss detection device of the present invention;

[0024] Figure 5 Partial perspective view of the lifting block of a multifunctional distribution network line loss detection device of the present invention;

[0025] Figure 6 For the present invention Figure 5 Enlarged view at A in;

[0026] Figure 7 Partial perspective view of the clamping and detection component of a multifunctional distribution network line loss detection device of the present invention;

[0027] Figure 8 Partial perspective view of the fixing component of a multifunctional distribution network line loss detection device of the present invention.

[0028] In the figure:

[0029] 1. Multifunctional detection device body; 2. Voltage transformer; 3. Current transformer; 4. Positioning component; 401. Mounting plate; 402. Chute; 403. Support block; 404. First forward and reverse motor; 405. Ball screw; 406. Sliding frame; 407. Second forward and reverse motor; 408. Threaded rod; 409. Lifting block; 410. Input shaft; 411. Reducer; 412. Output shaft; 413. Driving gear; 414. Fixed rod; 415. Driven gear; 5. Clamping and detection component; 501. Tooth row; 502. Ball; 503. Clamping block; 504. Generator body; 505. Clamping tool; 6. Terminal block body; 7. Fixing component; 701. Compression plate; 702. Bearing block; 703. Spring; 704. Positioning block. Detailed implementation manners

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figure 1-8, the present invention provides a technical solution: a multifunctional distribution network line loss detection device, including a multifunctional detection device body 1. A voltage transformer 2 is provided at a position close to the top inside the multifunctional detection device body 1, and a current transformer 3 is provided at a position close to the top inside the multifunctional detection device body 1. A plurality of terminal block bodies 6 are provided at a position close to the center on the outer surface of the multifunctional detection device body 1. A clamping detection assembly 5 is provided at a position close to the bottom on the outer surface of the multifunctional detection device body 1. A positioning assembly 4 is provided on the outer surface of the clamping detection assembly 5. The positioning assembly 4 includes a mounting plate 401 and a lifting block 409. A chute 402 is opened at a position close to the center on the top of the mounting plate 401. Support blocks 403 are fixedly installed on the top of the mounting plate 401 close to both side edges through screws. A first forward and reverse motor 404 is fixedly installed on the outer surface of one of the support blocks 403 through screws. The output end of the first forward and reverse motor 404 is fixedly connected to a ball screw 405. The clamping detection assembly 5 includes two tooth rows 501. Clamping blocks 503 are fixedly connected to one ends of the two tooth rows 501 respectively. A generator body 504 for detecting whether the contact of the line loss detection device and the cable joint is correctly connected is provided at a position close to the top on the outer surface of the lifting block 409. A clamping tool 505 for connecting the generator body 504 and the cable is provided at the output end of the generator body 504 through a wire. A sliding frame 406 is fixedly connected to the outer surface of the ball screw 405. A second forward and reverse motor 407 is fixedly connected to the top of the sliding frame 406 through screws. The output end of the second forward and reverse motor 407 is fixedly connected to a threaded rod 408. The outer surface of the threaded rod 408 is threadedly connected to the inner wall of the lifting block 409. The bottom end of the threaded rod 408 is fixed with an input shaft 410. A speed reducer 411 is provided at the bottom end of the input shaft 410. The output end of the speed reducer 411 is fixedly connected to an output shaft 412. A driving gear 413 is fixedly installed at the bottom end of the output shaft 412. Fixed rods 414 are fixedly installed at positions close to both side edges on the outer surface of the lifting block 409. Driven gears 415 are rotatably sleeved on the outer surfaces of the two fixed rods 414 close to the bottom ends respectively. The outer surface of the mounting plate 401 is fixedly connected to the outer surface of the multifunctional detection device body 1 through screws. The two ends of the ball screw 405 respectively penetrate through the outside of the two support blocks 403 movably. The two ends of the threaded rod 408 respectively penetrate through the opposite outside of the sliding frame 406 movably. The outer surface of the sliding frame 406 is slidably connected to the inside of the chute 402. The outer surface of the lifting block 409 is slidably connected to the inner wall of the sliding frame 406. The outer surface of the speed reducer 411 is fixedly connected to the inner wall of the lifting block 409 through an auxiliary plate. The outer surfaces of the two driven gears 415 are both meshed with the outer surface of the driving gear 413.

[0032] In this embodiment, when it is necessary to use the multi-functional distribution network line loss detection device to measure the variable electricity quantity of the cable, first install the multi-functional detection device body 1 at the node where the main line intersects with multiple important branch lines. Then, connect one end of multiple external cables to the multiple terminal block bodies 6, and ensure that each cable corresponds to each terminal block body 6 one by one, so that the multi-functional detection device body 1 can accurately measure the line loss conditions of multiple cables simultaneously. During the connection of the cable and the terminal block body 6, to prevent incorrect connection between multiple cables and multiple terminal block bodies 6, when one cable is connected to one terminal block body 6, first start the first forward and reverse motor 404 to drive the ball screw 405 to rotate. Among them, the ball screw 405 consists of a screw rod, a nut, balls, and a reverse device. The screw rod is a slender shaft with a helical groove, and the thread on its surface is precision machined with high precision requirements. The nut is a component that cooperates with the screw rod and also has a corresponding helical groove inside to accommodate the balls. The balls are the key transmission elements in the ball screw 405 and are spherical. They are located between the helical grooves of the screw rod and the nut and play a role in reducing friction. The reverse device is mainly used to guide the balls to circulate and roll between the screw rod and the nut. When the screw rod rotates, due to the helical grooves between the screw rod and the nut and the presence of the balls, the balls will roll in the helical grooves. When the screw rod rotates clockwise, the balls will be pushed by the helical groove of the screw rod and roll into the helical groove of the nut along the helical groove. Because of the rolling of the balls, the nut will produce a linear motion relative to the screw rod. This motion mode converts the rotational motion of the screw rod into the linear motion of the nut, and then drives the sliding frame 405 to move along the ball screw 406. The movement of the sliding frame 406 drives the clamping tool 505 to move directly above the connection between the cable and the terminal block body 6, that is, the precise movement of the positioning component 4 is realized.

[0033] As Figures 2-8 shown, a first forward and reverse motor 404 is fixed to the outer surface of one of the support blocks 403 by screws. The output end of the first forward and reverse motor 404 is fixedly connected to a ball screw 405. The outer surface of the ball screw 405 is fixedly connected to a sliding frame 406. The top of the sliding frame 406 is fixedly connected to a second forward and reverse motor 407 by screws. The output end of the second forward and reverse motor 407 is fixedly connected to a threaded rod 408. The outer surface of the threaded rod 408 is threadedly connected to the inner wall of the lifting block 409. The bottom end of the threaded rod 408 is fixed with an input shaft 410. A speed reducer 411 is arranged at the bottom end of the input shaft 410. The output end of the speed reducer 411 is fixedly connected to an output shaft 412. A driving gear 413 is fixedly installed at the bottom end of the output shaft 412. Fixed rods 414 are fixedly installed on the outer surface of the lifting block 409 near both side edges. Driven gears 415 are rotatably sleeved on the outer surfaces of the two fixed rods 414 near the bottom ends.

[0034] In this embodiment, when the clamping tool 505 moves directly above the connection between the cable and the terminal block body 6, the second forward and reverse motor 407 is started to drive the threaded rod 408 to rotate, and then drive the lifting block 409 to move downward. Among them, as Figure 3 shown, the rectangular groove formed on the surface of the sliding frame 406 limits the sliding frame 406, enabling it to move vertically downward only along the direction of the threaded rod 408. The movement of the lifting block 409 drives the clamping tool 505 to move downward to the surface of the external cable. In addition, the rotation of the threaded rod 408 also drives the input shaft 410 to rotate. After the rotation speed of the input shaft 410 is adjusted by the speed reducer 411 to match the opening and closing speed of the clamping tool 505, it is output through the output shaft 412. The rotation of the output shaft 412 drives the driving gear 413 to rotate, and then drives the two driven gears 415 to rotate, so that the two tooth rows 501 slide along the inner wall of the lifting block 409 respectively. Among them, combined with Figure 3 and Figure 7 shown, in order to further improve the sliding speed of the two tooth rows 501 along the inner wall of the lifting block 409, through the arrangement of two rolling balls 502, the two tooth rows 501 move more smoothly during the movement, thereby further improving the sliding rate of the two clamping blocks 503, so that the two clamping blocks 503 rotate away from each other, and thus separate from the outer surfaces of the upper part of the opened clamping tool 505 that face away from each other. Among them, as Figure 7 shown, the clamping tool 505 is composed of two inclined clamping teeth, a lever and a spiral elastic device, which is a mature existing technology and will not be introduced in detail here. Under the action of the lever principle, the lower part of the clamping tool 505 rotates towards each other, so that the bottom of the clamping tool 505 slowly closes during the downward movement. When the clamping tool 505 is completely closed, the two clamping parts at the bottom of the clamping tool 505 just completely clamp the cable, thus indirectly realizing the connection between the cable and the generator body 504. At this time, the generator body 504 can be started. When the generator body 504 generates a high-frequency detection signal, the signal can be accurately transmitted to the cable joint part through the clamping tool 505. In this way, the signal can smoothly enter the cable system, so as to detect whether the cable joint connection is correct, the transmission characteristics of the signal in the cable, etc. When the detection of whether the cable wiring is correct is completed, the second forward and reverse motor 407 is started again to drive the threaded rod 408 to rotate in the reverse direction, and then drive the lifting block 409 to move vertically upward, so that the two clamping blocks 503 move towards each other, so that the clamping tool 505 opens, separates from the external cable and moves upward at the same time until it completely separates from the outer surface of the cable body. Through the action of the clamping detection component 5, it is possible to respectively detect whether the wiring between multiple external cable UI terminal block bodies 6 is accurate, prevent the occurrence of cable wiring errors, and solve the problem in the prior art that the power distribution network line loss detection device is prone to wiring errors, resulting in the inability to determine the fault location.

[0035] As Figure 2 , Figure 4 and Figure 7 shown, a fixing component 7 for fixing a cable is provided at a position close to the bottom on the outer surface of the multifunctional detection device body 1. The fixing component 7 includes a pressure-resistant plate 701. The outer surface of the pressure-resistant plate 701 is fixedly connected to the outer surface of the multifunctional detection device body 1 through a plurality of screws. A plurality of bearing blocks 702 are fixed to the top of the pressure-resistant plate 701. Springs 703 are provided on the outer surfaces of the plurality of bearing blocks 702. Positioning blocks 704 for clamping the cable are provided at one ends of the plurality of springs 703. One ends of the plurality of springs 703 are respectively fixedly connected to the outer surfaces of the plurality of bearing blocks 702, and the other ends of the plurality of springs 703 are respectively fixedly connected to the outer surfaces of the plurality of positioning blocks 704. The outer surfaces of the two rolling balls 502 slide along the inner walls of the two tooth rows 501 respectively. The outer surface of the clamping tool 505 is fixedly connected to the outer surface of the lifting block 409 through screws. The clamping tool 505 is arranged between the outer surfaces of the two clamping blocks 503.

[0036] In this embodiment, during the connection of a plurality of external cables to the terminal block body 6, in order to prevent the cable connection from becoming loose, resulting in inaccurate detection of cable line loss, before the plurality of external cables are respectively inserted into the inside of the terminal block body 6, they are first inserted between two positioning blocks 704 corresponding to the terminal block body 6. Among them, as Figure 8 shown, the cross-section of the positioning block 704 is arc-shaped, and each pair of corresponding positioning blocks 704 forms an outward-opening "eight" shape. When the cable is inserted between the outer surfaces of the two positioning blocks 704, the two positioning blocks 704 are respectively moved to one side of the springs 703 connected to them under the extrusion of the cable, so that the two springs 703 are both compressed and shortened. Then, the two springs 703 rebound under the action of their own elastic forces, thereby extruding the cable. When the cable is inserted into the inside of the terminal block body 6, the two positioning blocks 704 can squeeze and fix the cable, ensuring the stability of the cable connection, and further improving the accuracy of the multifunctional detection device body 1 when detecting cable line loss. Combining Figure 3 and Figure 7 shown, in order to further improve the sliding speed of the two tooth rows 501 along the inner wall of the lifting block 409, through the arrangement of the two rolling balls 502, the two tooth rows 501 are made to move more smoothly during the movement, thereby further improving the sliding rate of the two clamping blocks 503.

[0037] As Figure 1As shown in the figure, a multifunctional distribution network line loss detection device includes a multifunctional detection device body 1. A voltage transformer 2 is provided near the top of the inner wall of the multifunctional detection device body 1, and a current transformer 3 is provided near the top of the inner wall of the multifunctional detection device body 1. A plurality of terminal block bodies 6 are provided near the center of the outer surface of the multifunctional detection device body 1. A clamping detection assembly 5 is provided near the bottom of the outer surface of the multifunctional detection device body 1. It is characterized in that a positioning assembly 4 is provided on the outer surface of the clamping detection assembly 5. The positioning assembly 4 includes a mounting plate 401 and a lifting block 409. A chute 402 is opened near the center of the top of the mounting plate 401. Support blocks 403 are fixedly installed on both sides of the top of the mounting plate 401 by screws. The clamping detection assembly 5 includes two tooth rows 501. One end of each of the two tooth rows 501 is fixedly connected to a clamping block 503. A generator body 504 for detecting whether the contact of the line loss detection device and the cable joint is correctly connected is provided near the top of the outer surface of the lifting block 409. A clamping tool 505 for connecting the generator body 504 and the cable is provided at the output end of the generator body 504 through a wire.

[0038] In this embodiment, when all the external cables in the multifunctional detection device body 1 are wired, when it is necessary to detect the line loss of the cable, first start the voltage transformer 2 to convert the high voltage in the distribution network into low voltage in proportion. In this way, the measurement module in the multifunctional detection device body 1 can easily and accurately measure the converted low voltage. Since the voltage in the distribution network is not constant and will fluctuate due to various factors such as load changes and power grid faults, the voltage transformer 2 can monitor the voltage change in real time. When the voltage fluctuates, the multifunctional detection device body 1 can analyze the impact of the voltage fluctuation on the line loss, so as to better evaluate the operating conditions and line loss characteristics of the cable. In the detection of the line loss of the distribution network cable, the primary function of the current transformer 3 is to collect the current signal in the cable. The current in the distribution network cable varies due to factors such as load and is relatively large. It is not realistic to directly measure these large currents. However, the current transformer 3 can convert the large current on the primary side into a small current on the secondary side in proportion. The current transformer 3 can monitor the current change in real time. When the current changes, the line loss detection device can combine the data of the voltage transformer 2 to analyze the impact of the current change on the line loss. Through the real-time current monitoring data provided by the current transformer 3, it is helpful to timely understand the dynamic change of the line loss and evaluate the line loss characteristics of the cable under different load conditions, so as to better manage the operation and loss of the distribution network. Through the mutual cooperation of the voltage transformer 2 and the current transformer 3, the accurate measurement of the power of the distribution network is realized.

[0039] Usage method and working principle of this device: When it is necessary to use the multi-functional distribution network line loss detection device to measure the variable electricity quantity of the cable, first install the multi-functional detection device body 1 at the node where the main line intersects with multiple important branch lines. Among them, during the connection of multiple external cables to the terminal block body 6, in order to prevent the cable connection from becoming loose, resulting in inaccurate cable line loss detection, before each of the multiple external cables is inserted into the interior of the terminal block body 6, first insert it between the two positioning blocks 704 corresponding to the terminal block body 6. When the cable is inserted between the outer surfaces of the two positioning blocks 704, the two positioning blocks 704 are respectively pushed towards the side of the spring 703 connected to them by the extrusion of the cable, causing the two springs 703 to be compressed and shortened. Then, the two springs 703 rebound under the action of their own elastic force, thereby squeezing the cable. When the cable is inserted into the interior of the terminal block body 6, the two positioning blocks 704 can squeeze and fix the cable, ensuring the stability of the cable connection. Then, connect one end of multiple external cables to multiple terminal block bodies 6, and ensure that each cable corresponds to each terminal block body 6 one by one, so that the multi-functional detection device body 1 can accurately measure the line loss conditions of multiple cables simultaneously. During the connection of the cable to the terminal block body 6, in order to prevent incorrect connection between multiple cables and multiple terminal block bodies 6, when one cable is connected to one terminal block body 6, first start the first forward and reverse motor 404 to drive the ball screw 405 to rotate, and then drive the sliding frame 405 to move along the ball screw 406. The movement of the sliding frame 406 drives the clamping tool 505 to move directly above the connection between the cable and the terminal block body 6, that is, the precise movement of the positioning component 4 is realized. When the clamping tool 505 moves directly above the connection between the cable and the terminal block body 6, start the second forward and reverse motor 407 to drive the threaded rod 408 to rotate, and then drive the lifting block 409 to move downward. Among them, as Figure 3 shown, the rectangular groove opened on the surface of the sliding frame 406 plays a role in limiting the sliding frame 406, so that it can only move vertically downward along the direction of the threaded rod 408. The movement of the lifting block 409 drives the clamping tool 505 to move downward to the surface of the external cable. In addition, the rotation of the threaded rod 408 also drives the input shaft 410 to rotate. After the rotation speed of the input shaft 410 is adjusted to match the opening and closing speed of the clamping tool 505 through the speed reducer 411, it is output through the output shaft 412. The rotation of the output shaft 412 drives the driving gear 413 to rotate, and then drives the two driven gears 415 to rotate, and further enables the two tooth rows 501 to slide along the inner wall of the lifting block 409 respectively. Combining Figure 3 and Figure 7As shown, in order to further improve the sliding speed of the two tooth rows 501 along the inner wall of the lifting block 409, the arrangement of the two rolling balls 502 makes the two tooth rows 501 move more smoothly during the movement, so that the two clamping blocks 503 rotate away from each other, and thus separate from the opposite outer surfaces of the upper part of the opened clamping tool 505. Under the action of the lever principle, the lower part of the clamping tool 505 rotates towards each other, and then the bottom of the clamping tool 505 slowly closes during the downward movement. When the clamping tool 505 is completely closed, the two clamping parts at the bottom of the clamping tool 505 just completely clamp the cable, thus indirectly realizing the connection between the cable and the generator body 504. At this time, the generator body 504 can be started. When the generator body 504 generates a high-frequency detection signal, the signal can be accurately transmitted to the cable joint part through the clamping tool 505. In this way, the signal can smoothly enter the cable system, so as to detect whether the cable joint connection is correct, the transmission characteristics of the signal in the cable, etc. After the detection of whether the cable wiring is correct is completed, the second forward and reverse motor 407 is started again to drive the threaded rod 408 to rotate in the reverse direction, and then drive the lifting block 409 to move vertically upward, so that the two clamping blocks 503 move towards each other, so that the clamping tool 505 opens, separates from the external cable and moves upward until it completely separates from the outer surface of the cable body. When all the external cables in the multi-functional detection device body 1 are wired, when it is necessary to detect the line loss of the cable, first start the voltage transformer 2 to convert the high voltage in the distribution network into low voltage in proportion. In this way, the measurement module in the multi-functional detection device body 1 can easily and accurately measure the converted low voltage. Since the voltage in the distribution network is not constant and will fluctuate due to various factors such as load changes and power grid faults, the voltage transformer 2 can monitor the voltage change in real time. When the voltage fluctuates, the multi-functional detection device body 1 can analyze the impact of the voltage fluctuation on the line loss, so as to better evaluate the operation status and line loss characteristics of the cable. In the detection of the line loss of the distribution network cable, the primary function of the current transformer 3 is to collect the current signal in the cable. The current magnitude in the distribution network cable is different due to factors such as load and is relatively large. It is not realistic to directly measure these large currents, while the current transformer 3 can convert the large current on the primary side into a small current on the secondary side in proportion. The current transformer 3 can monitor the current change in real time. When the current changes, the line loss detection device can analyze the impact of the current change on the line loss in combination with the data of the voltage transformer 2. Through the real-time current monitoring data provided by the current transformer 3, it is helpful to timely understand the dynamic change of the line loss and evaluate the line loss characteristics of the cable under different load conditions, so as to better manage the operation and loss of the distribution network.

[0040] The wiring diagrams of the multifunctional detection device body 1, voltage transformer 2, current transformer 3, first forward and reverse motor 404, second forward and reverse motor 407, generator body 504, and wiring head body 6 in the present invention belong to the common general knowledge in the art. Their working principles are already known technologies, and their models are selected according to actual use. Therefore, the control methods and wiring arrangements of the multifunctional detection device body 1, voltage transformer 2, current transformer 3, first forward and reverse motor 404, second forward and reverse motor 407, generator body 504, and wiring head body 6 will not be explained in detail anymore.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A multifunctional distribution network line loss detection device, comprising a multifunctional detection device body (1). A voltage transformer (2) is arranged near the top of the inner wall of the multifunctional detection device body (1), and a current transformer (3) is arranged near the top of the inner wall of the multifunctional detection device body (1). A plurality of terminal block bodies (6) are arranged near the center of the outer surface of the multifunctional detection device body (1), and a clamping detection assembly (5) is arranged near the bottom of the outer surface of the multifunctional detection device body (1). It is characterized in that, A positioning component (4) is arranged on the outer surface of the clamping detection component (5). The positioning component (4) includes a mounting plate (401) and a lifting block (409). A sliding groove (402) is formed at the top of the mounting plate (401) near the center. Support blocks (403) are fixedly installed on the top of the mounting plate (401) near both side edges by screws: The clamping detection component (5) includes two tooth rows (501). Clamping blocks (503) are fixedly connected to one ends of the two tooth rows (501). A generator body (504) for detecting whether the contact between the line loss detection device and the cable joint is correctly connected is arranged on the outer surface of the lifting block (409) near the top. A clamping tool (505) for connecting the generator body (504) and the cable is arranged at the output end of the generator body (504) through a wire.

2. The multifunctional distribution network line loss detection device according to claim 1, wherein: A first forward and reverse motor (404) is fixedly installed on the outer surface of one of the support blocks (403) by screws. A ball screw (405) is fixedly connected to the output end of the first forward and reverse motor (404). A sliding frame (406) is fixedly connected to the outer surface of the ball screw (405). A second forward and reverse motor (407) is fixedly connected to the top of the sliding frame (406) by screws. A threaded rod (408) is fixedly connected to the output end of the second forward and reverse motor (407).

3. The multifunctional distribution network line loss detection device according to claim 2, wherein: The outer surface of the threaded rod (408) is threadedly connected to the inner wall of the lifting block (409). An input shaft (410) is fixed to the bottom end of the threaded rod (408). A speed reducer (411) is arranged at the bottom end of the input shaft (410). An output shaft (412) is fixedly connected to the output end of the speed reducer (411).

4. The multifunctional distribution network line loss detection device according to claim 3, wherein: A driving gear (413) is fixedly installed at the bottom end of the output shaft (412). Fixed rods (414) are fixedly installed on the outer surface of the lifting block (409) near both side edges. Driven gears (415) are rotatably sleeved on the outer surfaces of the two fixed rods (414) near the bottom ends.

5. The multifunctional distribution network line loss detection device according to claim 4, characterized in that: The outer surface of the mounting plate (401) is fixedly connected to the outer surface of the multifunctional detection device body (1) by screws. The two ends of the ball screw (405) respectively penetrate through the outside of the two support blocks (403) movably. The two ends of the threaded rod (408) respectively penetrate through the opposite outsides of the sliding frame (406) movably.

6. The multifunctional distribution network line loss detection device according to claim 5, wherein: The outer surface of the sliding frame (406) is slidably connected to the inside of the sliding groove (402). The outer surface of the lifting block (409) is slidably connected to the inner wall of the sliding frame (406). The outer surface of the speed reducer (411) is fixedly connected to the inner wall of the lifting block (409) through an auxiliary plate. The outer surfaces of the two driven gears (415) are both meshed with the outer surface of the driving gear (413).

7. The multifunctional distribution network line loss detection device according to claim 6, characterized in that: The outer surfaces of the two driven gears (415) are respectively meshed and connected with the outer surfaces of the two tooth rows (501). The outer surfaces of the two tooth rows (501) are respectively slidably connected with the opposite inner walls of the lifting block (409). Rolling balls (502) are arranged on the opposite inner walls of the lifting block (409).

8. The multifunctional distribution network line loss detection device according to claim 7, characterized in that: The outer surfaces of the two rolling balls (502) are respectively slid with the inner walls of the two tooth rows (501). The outer surface of the clamping tool (505) is fixedly connected with the outer surface of the lifting block (409) by screws. The clamping tool (505) is arranged between the outer surfaces of the two clamping blocks (503).

9. The multifunctional distribution network line loss detection device according to claim 8, characterized in that: A fixing component (7) for fixing a cable is arranged at a position close to the bottom on the outer surface of the multi-functional detection device body (1). The fixing component (7) includes a pressure-resistant plate (701). The outer surface of the pressure-resistant plate (701) is fixedly connected with the outer surface of the multi-functional detection device body (1) by a plurality of screws. A plurality of bearing blocks (702) are fixed on the top of the pressure-resistant plate (701). Springs (703) are arranged on the outer surfaces of the plurality of bearing blocks (702).

10. The multifunctional distribution network line loss detection device according to claim 9, characterized in that: One end of each of the plurality of springs (703) is provided with a positioning block (704) for clamping the cable. One end of each of the plurality of springs (703) is respectively fixedly connected with the outer surface of one of the plurality of bearing blocks (702). The other end of each of the plurality of springs (703) is respectively fixedly connected with the outer surface of one of the plurality of positioning blocks (704).

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