CN218974498U

CN218974498U - Switch cabinet discharge monitoring mechanism

Info

Publication number: CN218974498U
Application number: CN202222856806.3U
Authority: CN
Inventors: 沈海荣; 张波; 许新科; 王状; 贾岳斌
Original assignee: Jiangsu Great Electric Power Technology Co ltd
Current assignee: Jiangsu Great Electric Power Technology Co ltd
Priority date: 2022-10-28
Filing date: 2022-10-28
Publication date: 2023-05-05
Anticipated expiration: 2032-10-28

Abstract

The utility model discloses a switch cabinet discharge monitoring mechanism, which belongs to the technical field of switch cabinet detection and comprises the following components: the lifting sliding groove is fixedly formed in the outer wall of the opposite side of the mounting plate, an adjusting screw rod and a limiting sliding rod are respectively arranged in the lifting sliding groove and close to the front side and the rear side, lifting sliding blocks are sleeved on the outer wall of the adjusting screw rod through threads, a first ultrasonic sensor is fixedly arranged on the outer wall of each lifting sliding block, two mounting plates are fixedly connected with transverse plates on the upper end faces, gear grooves are fixedly formed in the inner ends of the two sides of each transverse plate, connecting shafts are fixedly connected between the upper inner wall and the lower inner wall of each gear groove in a rotating mode, driven bevel gears are fixedly sleeved on the outer wall of each connecting shaft, and limiting sliding grooves are fixedly formed in the inner ends of the middle parts of the transverse plates. From this, the device can detect a plurality of different positions of cubical switchboard, and detection efficiency is high, convenient operation has the practicality.

Description

Switch cabinet discharge monitoring mechanism

Technical Field

The utility model relates to a switch cabinet discharge monitoring mechanism, in particular to a switch cabinet discharge monitoring mechanism, and belongs to the technical field of switch cabinet detection.

Background

Practices in recent years show that partial discharge is a main cause of insulation degradation of a switch cabinet and finally insulation accidents. Insulation faults are often accompanied by the generation of partial discharges. The partial discharge is the discharge which occurs between the electrodes but does not penetrate the electrodes, and is characterized in that the phenomenon of repeated breakdown and extinction occurs under the action of high electric field intensity due to the weakness in the insulation of equipment or the defect in the production process, and the partial discharge is represented by the breakdown of gas in the insulation, the partial breakdown of solid or liquid medium in a small range, the partial breakdown discharge caused by the concentration of field intensity at the edge and sharp corner part of the metal surface, and the like. The energy of this discharge is small, so its short-term presence does not affect the insulation strength of the electrical device. However, if the insulation of the electrical equipment is continuously subjected to partial discharge under the operating voltage, the weak discharge will generate cumulative effect, so that the dielectric property of the insulation is gradually deteriorated and the partial defect is enlarged, and finally the whole insulation breakdown is caused. Partial discharge is thus a potential hazard for switchgear.

The prior publication number is: CN108333485a discloses a switchgear partial discharge monitoring system comprising: the system comprises a plurality of field detection modules, a monitoring center module and a plurality of remote terminals, wherein the field detection modules comprise an ultrasonic measurement unit, a transient-state ground electric wave measurement unit, a microprocessor and a field data server, the ultrasonic measurement unit, the transient-state ground electric wave measurement unit and the field data server are connected with the microprocessor, the monitoring center module comprises a database server and a WEB server, the database server is connected with the WEB server, the database server is in communication connection with the field data server, and the WEB server is in communication connection with the plurality of remote terminals. According to the utility model, the partial discharge detection of the switch cabinet is realized by the principle of ultrasonic and transient ground electric wave, and the measuring unit is arranged in the switch cabinet, so that the sensor is little in external interference, the abnormal condition in the switch cabinet can be truly reflected, and the unified management of monitoring display, analysis and early warning and equipment is realized, so that the problems can be found and treated by staff in time.

The applicant finds that all the switch cabinets on the market at present are integrally arranged, the number of switch cabinets is large, a plurality of positions of the switch cabinets need to be detected during detection, and energy and time costs are wasted manually.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a switch cabinet discharge monitoring mechanism which can realize multidirectional automatic detection and solve the problems of larger volume and low manual detection efficiency of the switch cabinet in the prior art.

In order to solve the problems, the following technical scheme is provided:

the utility model provides a cubical switchboard discharge monitoring mechanism, includes two mounting panels, two all fixedly set up the lift spout on the outer wall of the opposite one side of mounting panel, two be close to front and back side in the lift spout respectively and be provided with accommodate screw and spacing slide bar, the screw thread has cup jointed on the accommodate screw outer wall and has gone up the slider, fixedly set up ultrasonic sensor No. one on the lift slider outer wall, two mounting panel up end fixedly connected with diaphragm, the gear groove has all been fixedly set up to diaphragm both sides inner, two all rotate between the upper and lower inner wall of gear groove and be connected with the connecting axle, two all fixedly cup joint driven bevel gear on the connecting axle outer wall, spacing spout has been seted up to diaphragm middle part inner fixedly, rotate between spacing spout both sides inner wall and be connected with the drive shaft, the drive shaft both ends are run through two gear grooves respectively and fixedly connected with initiative bevel gear;

the intelligent automatic temperature and humidity monitoring device is characterized in that a driving motor is fixedly connected to the upper end of the transverse plate, a driving gear is fixedly connected to the output end of the driving motor, a second ultrasonic sensor is fixedly connected to the lower end face of the transverse plate, a protection box is fixedly arranged on the outer wall of one side of the mounting plate, a storage battery, a measuring host, a motor controller, a memory card, an AE sensor, a preamplifier and a temperature and humidity monitoring module are respectively fixedly arranged in the protection box, an antenna is fixedly arranged on the outer wall of one side of the protection box, and two self-locking pulleys are respectively and rotatably arranged at the lower end of the mounting plate.

Further, the adjusting screw rod is rotationally connected between the upper inner wall and the lower inner wall of the lifting chute, and the limiting slide rod is fixedly connected between the upper inner wall and the lower inner wall of the lifting chute.

Further, the other end of the lifting sliding block is sleeved on the outer wall of the limiting sliding rod in a sliding manner.

Further, the two driving bevel gears are respectively meshed with the two driven bevel gears.

Further, a driven gear is fixedly sleeved on the outer wall of the driving shaft, and the driven gear is meshed with the driving gear.

Further, the antenna adopts a 4G or Bluetooth mode for communication.

Further, the storage battery, the motor controller, the memory card, the AE sensor, the preamplifier and the temperature and humidity monitoring module are electrically connected with the measuring host.

Compared with the prior art, the utility model has the beneficial effects that: the device is convenient for the device to move by arranging the self-locking pulley, so that the detection in the front-back direction and the top end direction can be carried out on a plurality of switch cabinets which are arranged in a row, the trouble is saved, and the operation is easy;

compared with the prior art, the utility model has the beneficial effects that: the device drives the driving gear through setting up driving motor, further drives driven gear and rotates, further drives the drive shaft and rotates, further drives two initiative bevel gears and rotates, further drives two driven bevel gears and rotates, further drives two connecting axles and rotates, finally realizes driving the lift slider through adjusting screw rotation and reciprocates, further drives ultrasonic sensor and detects the different positions of cubical switchboard, detects more comprehensively.

Specific embodiments of the utility model are disclosed in detail below with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not limited in scope thereby. The embodiments of the utility model include many variations, modifications and equivalents within the spirit and scope of the appended claims.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the main structure of a preferred embodiment of a switchgear discharge monitoring mechanism according to the present utility model;

FIG. 2 is a schematic elevational view in cross-section of a preferred embodiment of a switchgear discharge monitoring mechanism in accordance with the present utility model;

FIG. 3 is a schematic view of the internal structure of a protective case of a preferred embodiment of a switchgear discharge monitoring mechanism according to the present utility model;

fig. 4 is a side view of a mounting plate of a preferred embodiment of a switchgear discharge monitoring mechanism in accordance with the present utility model.

In the figure: 1. a mounting plate; 2. lifting sliding grooves; 3. adjusting a screw rod; 4. a limit slide bar; 5. a lifting slide block; 6. a first ultrasonic sensor; 7. a cross plate; 8. a gear groove; 9. a connecting shaft; 10. a driven bevel gear; 11. limiting sliding grooves; 12. a drive shaft; 13. a drive bevel gear; 14. a driven gear; 15. a driving motor; 16. a drive gear; 17. self-locking pulleys; 18. a protection box; 19. a storage battery; 20. a measuring host; 21. a motor controller; 22. a memory card; 23. an AE sensor; 24. a pre-amplifier; 25. a temperature and humidity monitoring module; 26. an antenna; 27. and a second ultrasonic sensor.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-4, the switch cabinet discharge monitoring mechanism provided by the embodiment comprises two mounting plates 1, lifting sliding grooves 2 are fixedly formed in the outer walls of opposite sides of the two mounting plates 1, an adjusting screw 3 and a limiting sliding rod 4 are respectively arranged in the two lifting sliding grooves 2 and close to the front side and the rear side, lifting sliding blocks 5 are sleeved on the outer walls of the adjusting screw 3 in a threaded manner, a first ultrasonic sensor 6 is fixedly arranged on the outer walls of the lifting sliding blocks 5, upper end faces of the two mounting plates 1 are fixedly connected with transverse plates 7, gear grooves 8 are fixedly formed in the inner ends of two sides of the transverse plates 7, connecting shafts 9 are fixedly connected between the upper inner wall and the lower inner wall of the two gear grooves 8 in a rotating manner, driven bevel gears 10 are fixedly sleeved on the outer walls of the two connecting shafts 9, limiting sliding grooves 11 are fixedly formed in the inner ends of the middle of the transverse plates 7, driving shafts 12 are rotatably connected between the inner walls of two sides of the limiting sliding grooves 11, and two ends of the driving shafts 12 penetrate through the two gear grooves 8 respectively and are fixedly connected with driving bevel gears 13.

The upper end fixedly connected with driving motor 15 of diaphragm 7, driving motor 15 output fixedly connected with drive gear 16, terminal surface fixedly connected with ultrasonic sensor No. two 27 under the diaphragm 7, fixedly provided with protection box 18 on the outer wall of mounting panel 1 one side, fixedly provided with battery 19 respectively in the protection box 18, measuring host 20, motor controller 21, memory card 22, AE sensor 23, preamplifier 24 and humiture monitoring module 25, humiture monitoring module 25 is used for detecting air temperature humidity, battery 19 adopts the lithium cell to make, fixedly provided with antenna 26 on the outer wall of protection box 18 one side, two mounting panel 1 lower extreme all rotate and are provided with auto-lock pulley 17.

The first ultrasonic sensor 6 and the second ultrasonic sensor 27 mainly perform an ultrasonic signal acquisition function, convert the acquired ultrasonic signal into a voltage signal, and in the selection of the sensors, the operating frequency band and the sensitivity are two most important indexes. Although partial discharge and acoustic wave signals generated by the partial discharge have certain randomness, the frequency distribution range of detected signals does not change greatly. The sensor must therefore be large in band, not aliased, and small in geometry Yu Shengbo wavelength. The center frequency of the sensor is usually 40KHz, and the passband is 3KHz. The sensitivity was 65dbMIN. In addition, the signal input of the built-in ultrasonic sensor or the built-out ultrasonic sensor is distinguished and selected through a voltage comparator.

Preferably, the adjusting screw rod 3 is rotatably connected between the upper inner wall and the lower inner wall of the lifting chute 2, and the limiting slide rod 4 is fixedly connected between the upper inner wall and the lower inner wall of the lifting chute 2.

Preferably, the other end of the lifting slide block 5 is sleeved on the outer wall of the limit slide rod 4 in a sliding manner.

Preferably, the two drive bevel gears 13 are respectively engaged with the two driven bevel gears 10.

Preferably, the driven gear 14 is fixedly sleeved on the outer wall of the driving shaft 12, and the driven gear 14 is meshed with the driving gear 16.

Preferably, the antenna 26 communicates using a 4G or Bluetooth mode, and the antenna 26 is a special military line.

Preferably, the storage battery 19, the motor controller 21, the memory card 22, the AE sensor 23, the preamplifier 24 and the temperature and humidity monitoring module 25 are all electrically connected with the measurement host 20, and ultrasonic signals generated by partial discharge are converted into electrical signals through the AE sensor 23 and transmitted to the measurement host 20, so that the partial discharge level in the electrical equipment is represented through quantitative and positioning measurement.

Because the signal received by the sensor is too weak to directly enter the signal processing circuit, a pre-amplifying circuit is added behind the sensor. According to the characteristics of the collected ultrasonic voltage signals and the processing requirements of a subsequent processing circuit, a pre-amplifying circuit is required to adopt a high-precision low-noise audio operational amplifier, and the signals can be lifted to more than mV level.

The application principle and the application flow of the utility model are as follows:

when the device is used, the device is pushed to a detection position by utilizing the self-locking pulley 17, the two ultrasonic sensors 6 are respectively positioned on the front side and the rear side of the switch cabinet, the second ultrasonic sensor 27 is positioned at the upper end of the switch cabinet and then is used for measurement, meanwhile, the driving gear 16 is driven according to the driving motor 15 to further drive the driven gear 14 to rotate, the driving shaft 12 is further driven to rotate, the two driving bevel gears 13 are further driven to rotate, the two driven bevel gears 10 are further driven to rotate, the two connecting shafts 9 are further driven to rotate, the adjusting screw 4 is further driven to rotate, the lifting slide block 5 is controlled to move up and down, the ultrasonic sensors 6 are further driven to detect different positions of the switch cabinet, and convenience and trouble are saved.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to specific circumstances.

While the utility model has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this utility model will occur to those skilled in the art in light of the spirit and principles of this utility model, and such modifications and alterations are also within the scope of this utility model.

Claims

1. The utility model provides a cubical switchboard discharge monitoring mechanism, its characterized in that includes two mounting panel (1), two all fix on the opposite one side outer wall of mounting panel (1) and seted up lift spout (2), two be close to front and back side in lift spout (2) respectively and be provided with accommodate spindle (3) and spacing slide bar (4), screw thread has cup jointed lift slider (5) on accommodate spindle (3) outer wall, fixedly provided with ultrasonic sensor (6) No. on lift slider (5) outer wall, two mounting panel (1) up end fixedly connected with diaphragm (7), gear groove (8) have all been seted up to diaphragm (7) both sides inner all fixedly, two all rotate between the inner wall about gear groove (8) be connected with connecting axle (9), two all fixedly cup joint driven bevel gear (10) on connecting axle (9) outer wall, spacing spout (11) have been seted up to the middle part inner of diaphragm (7), rotate between spacing spout (11) both sides inner wall and be connected with drive shaft (12), drive bevel gear (13) are connected with respectively to two gear grooves (8) are run through to drive bevel gear (12);

the utility model discloses a self-locking device for the automobile, including diaphragm (7), mounting panel (1), protection box (18), battery (19), measurement host computer (20), motor controller (21), memory card (22), AE sensor (23), preamplifier (24) and humiture monitoring module (25), fixed antenna (26) being provided with on the outer wall of protection box (18) one side, two on the outer wall of mounting panel (1) lower extreme all rotate and be provided with auto-lock pulley (17), diaphragm (7) upper end fixedly connected with driving motor (15), driving motor (15) output fixedly connected with driving gear (16), terminal surface fixedly connected with ultrasonic sensor (27) No. two under diaphragm (7), fixedly provided with battery (19), measurement host computer (20), motor controller (21), memory card (22), AE sensor (23), preamplifier (24) and humiture monitoring module (25) on the outer wall of protection box (18) one side.

2. The switch cabinet discharge monitoring mechanism according to claim 1, wherein the adjusting screw rod (3) is rotatably connected between the upper inner wall and the lower inner wall of the lifting chute (2), and the limit sliding rod (4) is fixedly connected between the upper inner wall and the lower inner wall of the lifting chute (2).

3. The switch cabinet discharge monitoring mechanism according to claim 1, wherein the other end of the lifting sliding block (5) is in sliding sleeve connection with the outer wall of the limit sliding rod (4).

4. A switchgear discharge monitoring mechanism according to claim 1, characterized in that two drive bevel gears (13) are respectively engaged with two driven bevel gears (10).

5. A switch cabinet discharge monitoring mechanism according to claim 1, wherein a driven gear (14) is fixedly sleeved on the outer wall of the driving shaft (12), and the driven gear (14) is meshed with the driving gear (16).

6. A switchgear discharge monitoring mechanism according to claim 1, characterized in that the antenna (26) communicates in 4G or bluetooth.

7. The switch cabinet discharge monitoring mechanism according to claim 1, wherein the storage battery (19), the motor controller (21), the memory card (22), the AE sensor (23), the preamplifier (24) and the temperature and humidity monitoring module (25) are electrically connected with the measurement host (20).