On-line monitoring current signal acquisition device

Abstract

The utility model relates to the technical field of current signal acquisition devices, in particular to an on-line monitoring current signal acquisition device, which comprises a current signal acquisition device body, and two ends of a coil of the current signal acquisition device body are connected together through a quick disassembly and assembly component. A positioning assembly is arranged at the top of the current signal acquisition device body shell; wherein the quick assembly and disassembly assembly comprises a first connecting cylinder and a second connecting cylinder, and an inner ring of the first connecting cylinder is fixedly connected to one end of the coil in a sleeving mode. According to the utility model, the use of the rapid dismounting assembly enables the connection and disconnection of the coil to be faster, so that the coil can be taken down from the outside of the wire, and the current signal acquisition device is convenient to dismount and take down, so that the current signal acquisition device is convenient to take down for maintenance; meanwhile, through the use of the positioning assembly, the current signal acquisition device body is fixedly connected with the wire, the current signal acquisition device body is prevented from sliding, and the accuracy of current signal acquisition is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to current signal collection device technical field, specifically is a current signal collection device of on -line monitoring. BACKGROUND

[0002] In recent years, with the development of science and technology and the improvement of production level, various power electronic devices are widely applied, especially the application of dynamic nonlinear load, which causes the reactive power with transient and impact characteristics in the power system, the voltage, current waveform distortion, three-phase imbalance, low voltage and other conditions in the power grid are becoming more and more serious. The power pollution seriously affects the normal operation of the power system and the stability of the power equipment. In order to control the power quality problem of low-voltage distribution line, it is necessary to first master the specific situation of line power quality problem, including the line name of the problem, the specific problem (three-phase imbalance, low voltage or full load of a phase line) and the problem degree (slight, need attention or serious).

[0003] The current signal collection device for on-line monitoring of low-voltage current of distribution network line with application number CN201820729640.X can be directly sleeved on the conductor to be monitored. According to the principle of electromagnetic induction, the alternating current flowing in the conductor will generate an alternating magnetic field around the conductor, thereby inducing an induced voltage signal proportional to the current change in the flexible induction coil. The induced voltage signal is integrated by the integrator to generate an alternating voltage signal proportional to the primary current, and is converted into a current signal by a voltage-current converter and sent to the circuit board. The circuit board uploads the current signal to the system master station through wireless public network communication, can on-line collect the low-voltage current in the distribution network line, effectively improves the management of power quality, has the characteristics of simple operation, safety and high efficiency, etc.

[0004] But the current signal collection device is not convenient to disassemble after being sleeved on the conductor to be monitored, so that the current signal collection device is not convenient to take down for maintenance, and at the same time, the current signal collection device is easy to slide when sleeved on the conductor to be monitored, thereby affecting the accuracy of current signal collection. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of current signal collection device of on-line monitoring, make the connection and disconnection of coil more quickly, to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of current signal collection device of on-line monitoring, including current signal collection device body, the two ends of the coil of the current signal collection device body are connected together by quick disassembly and assembly component, the top of the shell of the current signal collection device body is equipped with positioning component;

[0007] The quick-assembly assembly includes: a first connecting cylinder and a second connecting cylinder. The inner ring of the first connecting cylinder is fixedly sleeved on one end of the coil, and the inner ring of the second connecting cylinder is fixedly sleeved on the other end of the coil. The outer side of the first connecting cylinder is fixedly connected to one end of a limiting block. The outer side of the second connecting cylinder has a guide groove and a slot, which are connected. The outer side of the first connecting cylinder is slidably inserted into the inner ring of the second connecting cylinder, and the limiting block is slidably connected to the groove wall of the slot.

[0008] Preferably, the outer part of the second connecting cylinder is fixedly inserted into the inner ring of the limiting ring, and the outer part of the second connecting cylinder is also slidably inserted into the inner ring of the sleeve.

[0009] Preferably, a return spring is provided between the sleeve and the limiting ring, and the inner ring of the return spring is slidably sleeved on the outside of the connecting cylinder.

[0010] Preferably, one end of the sleeve is provided with a triangular limiting plate, which is located outside the slot.

[0011] Preferably, a limiting groove is formed on the outside of the sleeve, the groove wall of the limiting groove is slidably connected to the side of the fixing block, and the bottom end of the fixing block is fixedly connected to the outside of the connecting cylinder.

[0012] Preferably, the positioning component includes: a connecting plate, the bottom of which is fixedly connected to the top of the housing, the connecting plate being rotatably connected to the outside of both ends of the bidirectional lead screw, and the end of the bidirectional lead screw being fixedly connected to one side of the knob.

[0013] Preferably, the external thread of the bidirectional lead screw is connected to the inside of the moving block, and the inside of the moving block is also slidably sleeved on the outside of the limiting rod, and the two ends of the limiting rod are fixedly connected to the outside of the connecting plate.

[0014] Preferably, the top of the movable block is fixedly connected to the bottom of the vertical plate, one side of the top of the vertical plate is fixedly connected to one side of the clamping block, and a V-shaped groove is provided on the other side of the clamping block.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The use of the quick-disassembly and assembly component of this utility model makes the connection and disconnection of the coil faster, so that the coil can be removed from the outside of the wire, making it easier to disassemble and remove the current signal acquisition device for maintenance; at the same time, the use of the positioning component ensures a fixed connection between the current signal acquisition device body and the wire, preventing the current signal acquisition device body from sliding and ensuring the accuracy of current signal acquisition.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the quick-assembly and disassembly component structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the positioning component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the working state of this utility model.

[0022] In the diagram: 1. Quick-release assembly; 11. Limiting ring; 12. Fixing block; 13. Limiting slide; 14. Triangular limiting plate; 15. Guide groove; 16. Connecting cylinder one; 17. Limiting block; 18. Connecting cylinder two; 19. Slot; 110. Sleeve; 111. Return spring; 2. Positioning assembly; 21. Clamping block; 22. Vertical plate; 23. Knob; 24. Connecting plate; 25. Moving block; 26. Limiting rod; 27. Bidirectional lead screw; 3. Coil; 4. Housing; 5. Wire. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 This utility model provides a technical solution: an online monitoring current signal acquisition device, comprising: a current signal acquisition device body, the two ends of the current signal acquisition device body coil 3 are connected together by a quick disassembly assembly 1, and a positioning assembly 2 is provided on the top of the current signal acquisition device body shell 4.

[0025] The quick-release assembly 1 includes: a first connecting cylinder 16 and a second connecting cylinder 18. The inner ring of the first connecting cylinder 16 is fixedly sleeved on one end of the coil 3, and the inner ring of the second connecting cylinder 18 is fixedly sleeved on the other end of the coil 3. The outer part of the first connecting cylinder 16 is fixedly connected to one end of the limiting block 17. The outer part of the second connecting cylinder 18 has a guide groove 15 and a retaining groove 19, which are connected. The outer part of the first connecting cylinder 16 is slidably inserted into the inner ring of the second connecting cylinder 18, and the limiting block 17 is slidably connected to the groove wall of the retaining groove 19. The outer part of the second connecting cylinder 18 is fixedly inserted into the inner ring of the limiting ring 11, and the outer part of the second connecting cylinder 18 is also slidably inserted into the inner ring of the sleeve 110. A return spring 111 is provided between the sleeve 110 and the limiting ring 11, and the inner ring of the return spring 111 is slidably sleeved on the outer part of the second connecting cylinder 18. One end of the sleeve 110 is provided with a triangular limiting plate 14, which is located outside the slot 19. A limiting groove 13 is provided on the outside of the sleeve 110. The groove wall of the limiting groove 13 is slidably connected to the side of the fixing block 12, and the bottom end of the fixing block 12 is fixedly connected to the outside of the connecting cylinder 18.

[0026] Furthermore, after the current signal acquisition device body is fixedly connected to the wire 5, the connecting cylinder 16 is inserted into the connecting cylinder 2 18 to achieve the closed loop of the coil 3, so that the coil 3 is wrapped around the outside of the wire 5. At the same time, the two ends of the coil 3 contact to form a passage. When the connecting cylinder 16 is inserted into the connecting cylinder 2 18, the limiting block 17 is inserted from the guide groove 15. When the limiting block 17 moves to the slot 19, the connecting cylinder 16 is rotated, and the connecting cylinder 16 drives the limiting block 17 to rotate. The limiting block 17 pushes the triangular limiting plate 14, so that the sleeve 110 moves towards the limiting ring 11 and compresses the return spring 111. When the limiting block 17 rotates to the bottom of the slot 19, the return spring 111 pushes the sleeve 110 and the triangular limiting plate 14 back to their original positions. In this way, the triangular limiting plate 14 blocks the limiting block 17, so that the limiting block 17 cannot move in the slot 19. Thus, the closed loop of the coil 3 is completed.

[0027] Furthermore, when it is necessary to disconnect coil 3 and remove the current signal acquisition device body for maintenance, simply push sleeve 110 towards limit ring 11. Limit ring 11 drives triangular limit plate 14 to move towards limit ring 11, so that triangular limit plate 14 cannot obstruct limit block 17. In this way, limit block 17 can disengage from connecting cylinder 18 through slot 19 and guide slot 15, thereby disconnecting coil 3 so that coil 3 can be removed from outside wire 5, making it easy to disassemble and remove the current signal acquisition device for maintenance.

[0028] The positioning component 2 includes: a connecting plate 24, the bottom of which is fixedly connected to the top of the housing 4; the connecting plate 24 is rotatably connected to the outside of both ends of the bidirectional lead screw 27; the end of the bidirectional lead screw 27 is fixedly connected to one side of the knob 23. The external thread of the bidirectional lead screw 27 is connected to the inside of the moving block 25; the inside of the moving block 25 is also slidably sleeved on the outside of the limiting rod 26; both ends of the limiting rod 26 are fixedly connected to the outside of the connecting plate 24. The top of the moving block 25 is fixedly connected to the bottom of the vertical plate 22; one side of the top of the vertical plate 22 is fixedly connected to one side of the clamping block 21; and a V-groove is provided on the other side of the clamping block 21.

[0029] Furthermore, during use, rotating the knob 23 clockwise causes the bidirectional lead screw 27 to rotate clockwise. The clockwise rotation of the bidirectional lead screw 27 drives the two sets of moving blocks 25 to move closer to each other. The two sets of moving blocks 25, in turn, drive the two sets of clamping blocks 21 to move closer to each other through the vertical plate 22. This achieves the clamping of the wire 5 by the two sets of clamping blocks 21. The V-shaped groove on the side of the clamping block 21 makes the clamping more stable. This achieves a fixed connection between the current signal acquisition device body and the wire 5, prevents the current signal acquisition device body from sliding, and ensures the accuracy of current signal acquisition.

[0030] Furthermore, the coil 3 of the current signal acquisition device can be directly placed on the conductor being detected. The alternating current flowing through the conductor will generate an alternating magnetic field around the conductor, thereby inducing an alternating voltage signal in the induction coil 3 that is proportional to the change in current. The alternating voltage signal is integrated by an integrator and then converted into a current signal by a voltage-to-current converter and sent to the circuit board. The circuit board then sends the signal to the main station server via wireless networks such as GPRS.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online monitoring current signal acquisition device, characterized in that, The current signal acquisition device body, both ends of the coil (3) are connected together through the quick disassembly and assembly component (1), and the top of the current signal acquisition device body shell (4) is provided with a positioning component (2); The quick disassembly and assembly component (1) comprises a connecting barrel one (16) and a connecting barrel two (18), the inner circle of the connecting barrel one (16) is fixedly sleeved on one end of the coil (3), the inner circle of the connecting barrel two (18) is fixedly sleeved on the other end of the coil (3), one end of the connecting barrel one (16) is fixedly connected to the limiting block (17), the outer part of the connecting barrel two (18) is provided with a guide groove (15) and a clamping groove (19), the guide groove (15) and the clamping groove (19) are communicated, the outer part of the connecting barrel one (16) is slidingly inserted into the inner circle of the connecting barrel two (18), and the limiting block (17) is slidingly connected to the groove wall of the clamping groove (19).

2. The online monitored current signal acquisition device according to claim 1, characterized in that: The outer part of the connecting barrel two (18) is fixedly inserted into the inner circle of the limiting ring (11), and the outer part of the connecting barrel two (18) is also slidingly inserted into the inner circle of the sleeve (110).

3. The online monitored current signal acquisition device according to claim 2, characterized in that: A reset spring (111) is arranged between the sleeve (110) and the limiting ring (11), and the inner circle of the reset spring (111) is slidingly sleeved on the outer part of the connecting barrel two (18).

4. The online monitored current signal acquisition device according to claim 2, characterized in that: One end of the sleeve (110) is provided with a triangular limiting plate (14), and the triangular limiting plate (14) is located outside the clamping groove (19).

5. The online monitored current signal acquisition device according to claim 2, characterized in that: The outer part of the sleeve (110) is provided with a limiting sliding groove (13), the groove wall of the limiting sliding groove (13) is slidingly connected to the side of the fixed block (12), and the bottom end of the fixed block (12) is fixedly connected to the outer part of the connecting barrel two (18).

6. The online monitored current signal acquisition device according to claim 5, characterized in that: The positioning component (2) comprises a connecting plate (24), the bottom of the connecting plate (24) is fixedly connected to the top of the shell (4), the connecting plate (24) is rotatably connected to the outer part of both ends of a bidirectional screw rod (27), and the end of the bidirectional screw rod (27) is fixedly connected to one side of a knob (23).

7. The online monitored current signal acquisition device according to claim 6, characterized in that: The outer part of the bidirectional screw rod (27) is threadedly connected to the inner part of a moving block (25), the inner part of the moving block (25) is also slidingly sleeved on the outer part of a limiting rod (26), and both ends of the limiting rod (26) are fixedly connected to the outer part of the connecting plate (24).

8. The online monitored current signal acquisition device according to claim 7, characterized in that: The top of the moving block (25) is fixedly connected to the bottom end of a vertical plate (22), one side of the top end of the vertical plate (22) is fixedly connected to one side of a clamping block (21), and the other side of the clamping block (21) is provided with a V-shaped groove.

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