CN220289758U - Novel ultrasonic wave partial discharge detection device - Google Patents
Novel ultrasonic wave partial discharge detection device Download PDFInfo
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- CN220289758U CN220289758U CN202320309546.XU CN202320309546U CN220289758U CN 220289758 U CN220289758 U CN 220289758U CN 202320309546 U CN202320309546 U CN 202320309546U CN 220289758 U CN220289758 U CN 220289758U
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Abstract
The utility model provides a novel ultrasonic partial discharge detection device, which comprises an instrument body and an external probe, wherein the instrument body comprises a holding shell, a main control PCB and a power supply, wherein the main control PCB and the power supply are arranged in the shell, the power supply supplies power to the main control PCB, a connector, a first sensor, a front-stage amplifying circuit, a signal selection circuit, a frequency-reducing circuit, a power amplifying circuit, an audio acquisition circuit, a secondary amplifying circuit, an analog-to-digital conversion circuit, a noise-reducing filter circuit and a main control CPU are arranged on the main control PCB, the connector and the first sensor are electrically connected with the front-stage amplifying circuit, the front-stage amplifying circuit is electrically connected with the signal selection circuit, one output channel of the signal selection circuit is electrically connected with the frequency-reducing circuit, the power amplifying circuit and the audio acquisition circuit in sequence, and the other output channel of the signal selection circuit is electrically connected with the secondary amplifying circuit, the noise-reducing filter circuit and the analog-to-digital conversion circuit in sequence.
Description
Technical Field
The utility model relates to the technical field of partial discharge detection, in particular to a novel ultrasonic partial discharge detection device.
Background
At present, ultrasonic detection is mostly used for partial discharge detection of a ring main unit, but the basic principle of the ultrasonic detection method for partial discharge is that the intensity of partial discharge is indirectly detected through the sound pressure change of an ultrasonic signal, and the greatest advantage of the ultrasonic detection method is that the ultrasonic detection method is free from electromagnetic interference of space. But the sound wave can generate phenomena such as reflection and absorption among media in the propagation process, and the sound wave signals can be attenuated to different degrees. Therefore, the method has obvious defects that the transmission of sound waves is influenced due to the complex internal structure of the ring main unit, and the sound energy is weakened, so that the detection sensitivity of an ultrasonic detection method is not high. In addition, the traditional ultrasonic partial discharge measuring device has the defects of different appearance, large volume, heavy weight and inconvenient carrying.
Disclosure of Invention
The utility model aims to provide a novel ultrasonic partial discharge detection device for solving the problems in the background technology.
The utility model is realized by the following technical scheme: the utility model provides a novel ultrasonic wave partial discharge detection device, includes instrument body and external probe, the instrument body is including holding the shell and setting is in inside master control PCB board, the power of shell, the power does master control PCB board power supply, be equipped with connector, first sensor, preceding amplifier circuit, signal selection circuit, down-conversion circuit, power amplifier circuit, audio acquisition circuit, secondary amplifier circuit, analog-to-digital conversion circuit, noise reduction filter circuit and main control CPU on the master control PCB board, connector, first sensor all with preceding amplifier circuit electrical property links to each other, preceding amplifier circuit with signal selection circuit electrical property links to each other, an output channel of signal selection circuit with down-conversion circuit, power amplifier circuit, audio acquisition circuit electrical property link to each other in proper order, another output channel of signal selection circuit with secondary amplifier circuit, noise reduction filter circuit, analog-to-digital conversion circuit link to each other in proper order, the connector with external probe links to each other.
Optionally, the holding shell is provided with a liquid crystal display, a key and an LED lamp, and the liquid crystal display, the key and the LED lamp are in signal connection with the main control CPU.
Optionally, the first sensor includes one or more of a capacitive coupling sensor, a UHF antenna, and a partial discharge collector.
Optionally, the external probe comprises an ultrasonic probe.
Optionally, a bluetooth module is further disposed in the holding shell, and the bluetooth module is connected with the main control COU signal.
Optionally, a TF card storage unit is further disposed in the holding shell, and the TF card storage unit is connected to the master control COU signal.
Compared with the prior art, the utility model has the following beneficial effects:
according to the novel ultrasonic partial discharge detection device, ultrasonic signals generated in the partial discharge process of the ring main unit are collected through the external probe, meanwhile, partial discharge signals of the ring main unit are collected through the first sensor, the collected partial discharge signals and the ultrasonic signals are amplified through the front-stage amplifying circuit, the amplified signals are selectively transmitted through the signal selecting circuit, the ultrasonic signals are sequentially processed through the frequency reducing circuit, the power amplifying circuit and the audio acquisition circuit, the partial discharge signals are sequentially processed through the secondary amplifying circuit, the noise reduction filter circuit and the analog-to-digital conversion circuit, the processed ultrasonic signals and the partial discharge signals are preprocessed through the main control CPU, whether the partial discharge of the ring main unit occurs is judged according to the preprocessing result, in conclusion, the accuracy of detection signals is guaranteed through the detection of the partial discharge signals through the detection technology of various sensors, and meanwhile, the usability of the signals is enhanced, and the detection accuracy is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only preferred embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is an overall schematic diagram of a novel ultrasonic partial discharge detection device provided by the utility model;
FIG. 2 is an explosion schematic diagram of a novel ultrasonic partial discharge detection device provided by the utility model;
fig. 3 is a schematic diagram of circuit connection provided by the present utility model.
In the figure, a holding shell, a main control PCB (printed circuit board), a power supply 3, an external probe 4, a connector 5, a first sensor 6, a pre-stage amplifying circuit 7, a signal selecting circuit 8, a frequency reducing circuit 9, a power amplifying circuit 10, an audio acquisition circuit 11, a secondary amplifying circuit 12, an analog-to-digital conversion circuit 13, a noise reduction filter circuit 14, a main control CPU15, a liquid crystal display 16, a key 17, an LED lamp 18, a Bluetooth module 19 and a TF card storage unit 20.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, exemplary embodiments according to the present utility model will be described in detail with reference to the accompanying drawings. It should be apparent that the described embodiments are only some embodiments of the present utility model and not all embodiments of the present utility model, and it should be understood that the present utility model is not limited by the example embodiments described herein. Based on the embodiments of the utility model described in the present application, all other embodiments that a person skilled in the art would have without inventive effort shall fall within the scope of the utility model.
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.
It should be understood that the present utility model may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes any and all combinations of the associated listed items.
In order to provide a thorough understanding of the present utility model, detailed structures will be presented in the following description in order to illustrate the technical solutions presented by the present utility model. Alternative embodiments of the utility model are described in detail below, however, the utility model may have other implementations in addition to these detailed descriptions.
Referring to fig. 1 to 3, a novel ultrasonic partial discharge detection device comprises an instrument body and an external probe 4, wherein the instrument body comprises a holding shell 1 and a main control PCB 2 and a power supply 3 which are arranged in the shell, the power supply 3 is used for supplying power to the main control PCB 2, a connector 5, a first sensor 6, a front-stage amplification circuit 7, a signal selection circuit 8, a frequency reduction circuit 9, a power amplification circuit 10, an audio acquisition circuit 11, a secondary amplification circuit 12, an analog-to-digital conversion circuit 13, a noise reduction filter circuit 14 and a main control CPU15 are arranged on the main control PCB 2, the connector 5 and the first sensor 6 are electrically connected with the front-stage amplification circuit 7, one output channel of the signal selection circuit 8 is electrically connected with the frequency reduction circuit 9, the power amplification circuit 10 and the audio acquisition circuit 11 in sequence, and the other output channel of the signal selection circuit 8 is electrically connected with the secondary amplification circuit 12, the noise reduction filter circuit 14 and the noise reduction filter circuit 13 in sequence, and the connector 5 is electrically connected with the external probe 4.
The utility model discloses a novel ultrasonic partial discharge detection device, which is used for detecting the intensity of partial discharge of a ring main unit by receiving and processing signals through a sensor, wherein an external probe 4 is connected with a connector 5 in specific use, ultrasonic signals generated in the partial discharge process of the ring main unit are collected through the external probe 4, meanwhile, the partial discharge signals of the ring main unit are collected through a first sensor 6, the collected partial discharge signals and the ultrasonic signals are amplified through a pre-amplification circuit 7, the amplified signals are selectively transmitted through a signal selection circuit 8, the ultrasonic signals are processed through a frequency reduction circuit 9, a power amplification circuit 10 and an audio acquisition circuit 11 in sequence, the partial discharge signals are processed through a secondary amplification circuit 12, a noise reduction filter circuit 14 and an analog-digital conversion circuit 13 in sequence, the processed ultrasonic signals and the partial discharge signals are preprocessed through a main control CPU15, and whether the partial discharge of the ring main unit occurs is judged according to the preprocessing result.
Specifically, the holding shell 1 is provided with a liquid crystal display 16, a key 17 and an LED lamp 18, the liquid crystal display 16, the key 17 and the LED lamp 18 are connected with the main control CPU15 through signals, the key 17 is used for inputting instructions to the main control CPU15, and the liquid crystal display 16 is used for displaying partial discharge results of the ring main unit.
Further, in some embodiments, the main control CPU15 uses an STM32F407ZGT6 chip to preprocess the processed ultrasonic signal and the partial discharge signal, and determines whether the partial discharge of the ring main unit occurs according to the preprocessing result.
Specifically, the first sensor 6 includes one or more of a capacitive coupling sensor, a UHF antenna, and a partial discharge collector.
Specifically, the external probe 4 includes an ultrasonic probe.
Specifically, a bluetooth module 19 is further disposed in the holding housing 1, and the bluetooth module 19 is connected with the main control COU signal.
Specifically, a TF card storage unit 20 is further disposed in the holding shell 1, and the TF card storage unit 20 is connected to the master control COU signal.
The utility model adopts the detection technology of combining ultrasonic wave and temporary ground wave, and receives and processes signals through the sensor, thereby detecting the intensity of partial discharge of the ring main unit, improving the detection sensitivity of an ultrasonic detection method, secondly, the product designs a handle with larger size to increase the holding hand feeling, accords with the ergonomic design, and the instrument shell adopts ABS+PC engineering plastics, has the characteristics of better high hardness, high toughness, high heat resistance and the like, designs the anti-falling structure of the side surface of the instrument, increases the thickness of the product, and ensures the anti-falling performance of equipment.
The instrument of the product selects a high-definition color screen as an instrument display interface, can clearly and visually display a measured value and a connection state, and can be externally connected with an ultrasonic probe, a wave collector and other external sensor accessories for more ultrasonic field test requirements, and the connector 5 is used for fast self-locking interface forms, so that the device is convenient to connect and insert and can prevent falling.
It should be noted that the electrical components of the connector 5, the first sensor 6, the front stage amplifying circuit 7, the signal selecting circuit 8, the down-converting circuit 9, the power amplifying circuit 10, the audio collecting circuit 11, the secondary amplifying circuit 12, the analog-to-digital converting circuit 13, the noise reduction filtering circuit 14, the main control CPU15 and the like used in the present utility model are all products in the prior art, and those skilled in the art select, install and complete the debugging operation of the circuit according to the use requirement, so as to ensure that each electrical component can work normally, and the components are all general standard components or components known to those skilled in the art, and the structures and principles thereof are all known by the skilled in the art through technical manuals or through routine experimental methods, so that the applicant does not make any specific limitation here.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the utility model.
Claims (6)
1. The utility model provides a novel ultrasonic wave partial discharge detection device, its characterized in that, including instrument body and external probe, the instrument body is including holding the shell and setting is in inside main control PCB board, the power of shell, the power does main control PCB board supplies power, be equipped with connector, first sensor, preceding amplifier circuit, signal selection circuit, down conversion circuit, power amplifier circuit, audio acquisition circuit, secondary amplifier circuit, analog-to-digital conversion circuit, noise reduction filter circuit and main control CPU on the main control PCB board, connector, first sensor all with preceding amplifier circuit electrical property links to each other, preceding amplifier circuit with signal selection circuit electrical property links to each other, an output channel of signal selection circuit with down conversion circuit, power amplifier circuit, audio acquisition circuit electrical property in proper order links to each other, another output channel of signal selection circuit and secondary amplifier circuit, noise reduction filter circuit, analog-to-digital conversion circuit link to each other in proper order, the connector with external probe links to each other.
2. The novel ultrasonic partial discharge detection device according to claim 1, wherein the holding shell is provided with a liquid crystal display, a key and an LED lamp, and the liquid crystal display, the key and the LED lamp are in signal connection with the main control CPU.
3. The novel ultrasonic partial discharge detection device according to claim 1, wherein the first sensor comprises one or more of a capacitive coupling sensor, a UHF antenna, and a partial discharge collector.
4. The novel ultrasonic partial discharge detection device according to claim 1, wherein the external probe comprises an ultrasonic probe.
5. The novel ultrasonic partial discharge detection device according to claim 1, wherein a Bluetooth module is further arranged in the holding shell, and the Bluetooth module is in signal connection with the main control CPU.
6. The novel ultrasonic partial discharge detection device according to claim 1, wherein a TF card storage unit is further arranged in the holding shell, and the TF card storage unit is in signal connection with the main control CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320309546.XU CN220289758U (en) | 2023-02-24 | 2023-02-24 | Novel ultrasonic wave partial discharge detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320309546.XU CN220289758U (en) | 2023-02-24 | 2023-02-24 | Novel ultrasonic wave partial discharge detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220289758U true CN220289758U (en) | 2024-01-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320309546.XU Active CN220289758U (en) | 2023-02-24 | 2023-02-24 | Novel ultrasonic wave partial discharge detection device |
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| Country | Link |
|---|---|
| CN (1) | CN220289758U (en) |
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2023
- 2023-02-24 CN CN202320309546.XU patent/CN220289758U/en active Active
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