Cable partial discharge on-line monitoring device

Abstract

The utility model discloses a cable partial discharge on-line monitoring device, which is characterized by comprising a monitoring device body, the monitoring device comprises an annular measuring part and a positioning part matched with the measuring part, the positioning part is close to and contacted with the end face of the measuring part, the measuring part is fixedly connected with the positioning part, and the measuring part is fixedly connected with the positioning part. The measuring part comprises an arc-shaped strip-shaped movable seat and a fixed seat matched with the movable seat, the movable seat is movably connected with one end of the fixed seat, the movable seat and the fixed seat are provided with a fixing device, the fixing device is far away from the movably connected end, and the fixed seat is provided with a wiring port. According to the utility model, the positioning part is used for fixing the device and the movable measuring part is used for monitoring the electric wire, so that the measuring part and the positioning part of the device are mutually independent and do not interfere with each other, and when any one of the measuring part and the positioning part fails, the device can continuously work as usual only by replacing a fault part, thereby being very convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to discharge monitoring equipment technical field more specifically, it relates to a kind of cable partial discharge on-line monitoring device. BACKGROUND

[0002] At present, cable partial discharge on-line monitoring device is a kind of equipment for real-time monitoring partial discharge phenomenon in cable line, based on the principle that partial discharge can produce high-frequency pulse current, by installing high-frequency current sensor in cable line, coupling out the pulse current signal generated by partial discharge, and then analyzing the characteristics and parameters of signal, such as discharge amplitude, frequency, phase, etc., to judge the situation of partial discharge.

[0003] At present, the Chinese patent with publication number CN202420252090.2 discloses a kind of power cable partial discharge on-line monitoring device, including monitoring device ontology, the monitoring device ontology includes fixed seat and movable seat, the side of fixed seat and movable seat is opened with slot, the movable mounting of protruding block is carried out in the inside of slot, the arc-shaped column is fixed on the protruding block, the inside of fixed seat and movable seat is opened with arc-shaped slot, the arc-shaped column is movably installed in the inside of arc-shaped slot, the arc-shaped plate is movably installed in the inside of fixed seat and movable seat, the side of arc-shaped plate is fixed with bearing seat, the fixed bolt is installed on bearing seat, the fixed bolt is rotatably installed on fixed seat and movable seat respectively.

[0004] But there are still some defects in the prior art, the connecting component is easy to expose, the structure is relatively complex and easy to damage, and the whole must be replaced when the connection is damaged, which is relatively inconvenient. INVENTION CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model provides a kind of cable partial discharge on-line monitoring device.

[0006] To achieve the above object, the utility model provides the following technical scheme: including monitoring device ontology, the monitoring device includes annular measuring part, and the positioning part is adapted to measuring part, the positioning part is close to and contacts measuring part end face, the measuring part is fixedly connected with positioning part, the measuring part includes arc-shaped long strip movable seat, and the fixed seat is adapted to movable seat, the movable seat is movably connected with one end of fixed seat, the movable seat and fixed seat are provided with fixing device the fixed device is away from the end of movable connection, the fixed seat is provided with terminal.

[0007] The utility model is further provided as follows: the positioning part is provided with positioning protrusion, the positioning protrusion is close to the inner ring of positioning part, the positioning protrusion is provided with positioning hole A, the positioning hole A is provided with the positioning screw of adaptation.

[0008] The present invention is further configured such that: the number of positioning holes A is four, which are evenly distributed on the side of the positioning protrusion.

[0009] The present invention is further configured such that the locating screw has an insulating rubber sleeve at its end.

[0010] The present invention is further configured such that: the positioning protrusion is provided with a corresponding movable sleeve, the inner ring and outer ring of the positioning protrusion are both provided with a plurality of evenly distributed snap-fit ​​grooves, the sleeve is provided with snaps corresponding to the snap-fit ​​grooves, the sleeve is provided with screw openings corresponding to the positioning screws, and the screw openings are provided with rubber pads and rubber blocks.

[0011] The present invention is further configured such that: the positioning part is provided with a plurality of positioning holes B, and the measuring part is provided with a plurality of threaded holes corresponding to the positioning holes B.

[0012] The present invention is further configured such that: the fixing device includes a movable fixing buckle and a fixing slot, the movable fixing buckle is close to the fixing base, and the fixing slot is close to the movable base.

[0013] In summary, this utility model has the following beneficial effects: By setting a positioning part to fix the utility model and a movable measuring part to monitor the wire, the measuring and positioning components are independent and do not interfere with each other. If either fails, only the faulty component needs to be replaced to continue normal operation, which is very convenient. The fixing device allows the utility model to be opened and closed simply by moving the movable fixing buckle, making it very convenient to use. The evenly distributed positioning screws ensure that the utility model can be reliably and stably installed on the wire simply by adjusting the position of the screws, making operation simple and reliable. Attached Figure Description

[0014] Fig. 1 This is a schematic diagram of the structure of this embodiment;

[0015] Fig. 2 This is a schematic diagram of an exploded structure in this embodiment;

[0016] Fig. 3 This is a schematic diagram of the monitoring device body in the open state in this embodiment;

[0017] Reference numerals: 1. Monitoring device body; 2. Measuring part; 21. Movable seat; 22. Fixed seat; 221. Wiring port; 23. Threaded hole; 3. Positioning part; 31. Positioning protrusion; 311. Positioning hole A; 32. Positioning screw; 321. Insulating sleeve; 33. Positioning hole B; 34. Clip groove; 4. Fixing device; 41. Movable fixing buckle; 42. Fixing slot; 5. Movable sleeve; 51. Screw opening; 52. Rubber pad; 53. Rubber block. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] This embodiment discloses an online monitoring device for partial discharge of cables, such as... Figs. 1 to 3 As shown, the device includes a monitoring device body 1, which includes an annular measuring part 2 and a positioning part 3 adapted to the measuring part 2. The positioning part 3 is close to and in contact with the end face of the measuring part 2. The measuring part 2 and the positioning part 3 are fixedly connected. The positioning part 3 and the measuring part 2 do not affect each other and are more modular. When either the positioning part 3 or the measuring part 2 fails, only the faulty part needs to be replaced to continue normal operation. The measuring part 2 includes an arc-shaped elongated movable seat 21 and a fixed seat 22 adapted to the movable seat 21. The movable seat 21 and the fixed seat 22 are movably connected at one end. The connection method is a hinge connection. The movable seat 21 and the fixed seat 22 are provided with a fixing device 4. The fixing device 4 is away from the movable connection end. The movable seat 21 and the fixed part form a movable clamp shape with a single-sided opening, which is simple and convenient to use. The fixed seat 22 is provided with a wiring port 221, which is used to export the measurement data of this utility model.

[0020] Further improvements include a positioning protrusion 31 near the inner ring of the positioning part 3, and a positioning hole A311 with a corresponding positioning screw 32. The positioning screw 32 passes through the positioning hole A311, and by rotating the screw, the threaded end of the screw 32 presses against the cable, allowing the device to be easily fixed to the cable using the friction between the threaded end of the screw 32 and the cable.

[0021] Further improvements include four positioning holes A311, evenly distributed on the side of the positioning protrusion 31. The uniform preload of the four screws distributes the load, reducing local deformation and stress on the cable insulation during installation, thus increasing cable lifespan. It also resists complex external forces such as vibration and torque, preventing single-point overload failure when the cable sways.

[0022] Further improvements include an insulating sleeve 321 at the end of the positioning screw 32. The insulating sleeve 321 generates continuous pressure through elastic deformation, increasing the friction between the screw and the connector, thus preventing screw loosening due to vibration or impact. It also reduces direct contact and friction between the screw's metal end and the cable insulation material, preventing scratches or wear and improving cable lifespan. Furthermore, the insulating sleeve 321 provides pre-pressure, assisting in quick screw positioning and reducing the need for fine-tuning during installation, making it very convenient.

[0023] Further improvement, the positioning protrusion 31 is provided with a corresponding movable sheath 5, the interactive sheath 5 is provided with can be as monitoring device body 1 simple open and close, the positioning protrusion 31 inner ring and outer ring are provided with a plurality of buckle grooves 34, the movable sheath 5 is provided with buckle groove 34 corresponding buckle, the movable sheath 5 is provided with positioning screw 32 corresponding screw opening 51, the screw opening 51 is provided with rubber pad 52 and rubber block 53.The screw opening 51 of the movable sheath 5 is matched with the thread of the positioning screw 32, which can assist in fixing the positioning screw 32 and improve the stability of the utility model;The rubber pad 52 and rubber block 53 are used for waterproofing, reducing the penetration of external environmental moisture into the threaded connection at the interface, and preventing the positioning rod screw 32 from rusting and being difficult to disassemble.

[0024] Further improvement, the positioning part 3 is provided with a plurality of positioning holes B33, and the measuring part 2 is provided with a plurality of threaded holes 23 corresponding to the positioning holes B33.The positioning holes B33 and the threaded holes 23 are matched with screws, so that the positioning part 3 and the measuring part 2 are fixedly and reliably connected together.When the positioning part 3 and the measuring part 2 are any failure, only need to loosen the screw to replace the faulty parts, so that the maintenance can be completed.

[0025] Further improvement, the fixing device 4 includes movable fixing buckle 41 and fixed clamping groove 42, the movable fixing buckle 41 is close to the fixed seat 22, the movable fixing buckle 41 includes a fixed plate and a linkage tab, the fixed clamping groove 42 is close to the movable seat 21, and the fixed clamping groove 42 is used for cooperating with the movable fixing buckle 41 to fix the movable seat 21 and the fixed seat 22, and the utility model is fixed by cooperating the fixed plate with the fixed clamping groove 42 and using the linkage tab to tighten the fixed plate.

[0026] The working principle of the utility model

[0027] When the utility model is used, the movable fixing buckle 41 is actuated to loosen the fixing device 4, so that the movable seat 21 and the fixed seat 22 are opened, the utility model is close to the cable to be installed and measured, so that the cable enters the utility model from the opening of the fixing device 4, the inner ring of the measuring part 2 is close to the cable, the movable seat 21 and the fixed seat 22 are in contact and closed and the fixing device 4 is fixed, the positioning screw 32 is rotated, the positioning screw 32 can press the cable tightly, the movable sheath 5 is opened and installed to the fixed protrusion 3, and the utility model can be stably and reliably fixed on the cable.

[0028] When the utility model fails, the movable fixing buckle 41 can be actuated to loosen the fixing device 4 simply, so that the utility model can be disassembled simply, when the positioning part 3 and the measuring part 2 are any failure, only need to replace the failed parts, so that the maintenance can be completed and the utility model can be used again.

[0029] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the design concept of the present application shall be included in the protection scope of the present application.

Claims

1. A cable partial discharge on-line monitoring device comprising a monitoring device body (1), characterised in that: The monitoring device includes a ring-shaped measuring part (2), a positioning part (3) adapted to the measuring part (2), the positioning part (3) is close to and contacts the end face of the measuring part (2), the measuring part (2) is fixedly connected with the positioning part (3), the measuring part (2) includes an arc-shaped long movable seat (21) and a fixed seat (22) adapted to the movable seat (21), the movable seat (21) is movably connected with one end of the fixed seat (22), the movable seat (21) and the fixed seat (22) are provided with a fixing device (4), the fixing device (4) is away from the movably connected end, and the fixed seat (22) is provided with a wiring port (221).

2. The partial discharge on-line monitoring device for power cable according to claim 1, characterized in that: The positioning part (3) is provided with a positioning protrusion (31), the positioning protrusion (31) is close to the inner ring of the positioning part (3), the positioning protrusion (31) is provided with a positioning hole A (311), and the positioning hole A (311) is provided with a positioning screw (32) adapted thereto.

3. The partial discharge on-line monitoring device for power cable according to claim 2, characterized in that: The number of the positioning hole A (311) is four, which are uniformly distributed on the side surface of the positioning protrusion (31).

4. The partial discharge on-line monitoring device for power cable according to claim 2, characterized in that: The tail of the positioning screw (32) is provided with an insulating rubber sleeve (321).

5. The partial discharge on-line monitoring device for power cable according to claim 2, characterized in that: The positioning protrusion (31) is provided with a movable sleeve (5) adapted thereto, the inner ring and the outer ring of the positioning protrusion (31) are both provided with a plurality of buckle grooves (34), the movable sleeve (5) is provided with a buckle adapted to the buckle groove (34), the movable sleeve (5) is provided with a screw opening (51) adapted to the positioning screw (32), and the screw opening (51) is provided with a rubber pad (52) and a rubber block (53).

6. The partial discharge on-line monitoring device for power cable according to claim 1, characterized in that: The positioning part (3) is provided with a plurality of positioning holes B (33), and the measuring part (2) is provided with a plurality of threaded holes (23) adapted to the positioning holes B (33).

7. The partial discharge on-line monitoring device of a cable according to claim 1, characterized in that: The fixing device (4) includes a movable fixing buckle (41) and a fixed buckle groove (42), the movable fixing buckle (41) is close to the fixed seat (22), and the fixed buckle groove (42) is close to the movable seat (21).

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