CN210270052U

CN210270052U - Electrified ultrasonic partial discharge detection device for GIS equipment

Info

Publication number: CN210270052U
Application number: CN201920825798.1U
Authority: CN
Inventors: 艾峤; 杨宇豪; 李浩然; 李伯伟; 李泉; 胡伟; 胡煜; 张远航; 马涛; 杨熠鑫
Original assignee: Yinchuan Power Supply Co Of State Grid Ningxia Electric Power Co ltd
Current assignee: Yinchuan Power Supply Co Of State Grid Ningxia Electric Power Co ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2020-04-07
Anticipated expiration: 2029-06-03

Abstract

The utility model provides a GIS equipment electrified supersound partial discharge detection device, including ultrasonic detector, treater, bracing piece, the bracing piece is a stock, sets up the connecting seat at the tip of bracing piece, and the one end and the bracing piece of connecting seat are connected, and ultrasonic detector is connected to the other end, and the detection face of ultrasonic detector's probe is towards the equipment setting of waiting to examine of outside, the treater sets up on the bracing piece lateral wall, and ultrasonic detector is connected with the treater, treater and outside display terminal wireless connection, the utility model discloses a long and thin bracing piece is close to the equipment implementation with ultrasonic detector and is detected, has replaced artifical climbing to detect, increases substantially this measuring work efficiency, adopts the AD620 chip realization signal of optimizing the improvement to go miscellaneous, the amplification function, not only low price, and simple to use, relevant circuit is simple.

Description

Electrified ultrasonic partial discharge detection device for GIS equipment

Technical Field

The utility model relates to a GIS equipment live detection technical field especially relates to a GIS equipment live ultrasonic partial discharge detection device.

Background

For the safe and stable operation of guaranteeing GIS equipment, need regularly to carry out electrified detection work to GIS equipment, electrified detection work volume increases day by day in recent years, there is the defect in the design of current electrified supersound office discharge tester, there is the problem that sensor test line length is shorter, do not have the eminence and measure appurtenance, supersound office discharge measuring point position is generally high in the GIS transformer substation, need personnel to climb the back and just can measure, be difficult to direct measurement, not only the operation is complicated, personnel have the risk of ascending a height and falling, electrocute moreover.

SUMMERY OF THE UTILITY MODEL

There is a need to provide a charged ultrasonic partial discharge detection device for GIS equipment.

The utility model provides a GIS equipment electrified supersound partial discharge detection device, includes ultrasonic detector, treater, bracing piece, the bracing piece is a stock, sets up the connecting seat at the tip of bracing piece, and the one end and the bracing piece of connecting seat are connected, and ultrasonic detector is connected to the other end, and the equipment setting is waited to examine towards outside in the detection of ultrasonic detector's probe, the treater sets up on the bracing piece lateral wall, and ultrasonic detector is connected with the treater, treater and outside display terminal wireless connection.

Preferably, the connecting seat includes installation section, linkage segment, chucking spare, the installation section is open-top's hollow casing, the internal diameter of hollow casing is greater than the external diameter of ultrasonic detector's probe, still sets up the annular on the outer wall that the casing is close to the oral area, still sets up the opening on casing oral area lateral wall, chucking spare is the elastic component, the elastic component block is in the annular, the linkage segment sets up in the bottom of installation section, the upper end and the installation section fixed connection of linkage segment, the tip swing joint of lower extreme and bracing piece.

Preferably, the connecting section comprises a body, a pin shaft, a locking nut, a connecting block and a screw rod, an embedded sinking groove is formed in the body, the upper end of the connecting block is inserted into the embedded sinking groove, the upper end of the screw rod is fixedly connected with the connecting block, the lower end of the screw rod is in threaded connection with the supporting rod, a transverse through hole for the pin shaft to be inserted is formed in the body and the connecting block, and the nut is connected with the pin shaft.

Preferably, the processor comprises an amplifier, the amplifier is an integrated chip, and a high-pass filter is respectively configured at the input end of the second pin and the input end of the third pin of the amplifier, and the high-pass filter is composed of a coupling capacitor and a grounding resistor.

Preferably, a seventh pin of the amplifier is used for being connected with an external positive power supply, a fourth pin of the amplifier is used for being connected with an external negative power supply, the seventh pin and the fourth pin are respectively connected with a ceramic capacitor and a tantalum capacitor, an adjusting resistor is connected in series between the first pin and the eighth pin, the sixth pin serves as an output terminal, and the fifth pin serves as a ground terminal.

Preferably, the processor is located in proximity to the ultrasonic detector.

Preferably, the processor is detachably connected with the support rod.

Preferably, the length of the support bar is adjustable.

The beneficial effects of the utility model reside in that:

1. the ultrasonic detector is close to the equipment to implement detection by adopting the slender supporting rod, so that manual climbing detection is replaced, and the working efficiency of the measurement is greatly improved.

2. The optimized and improved AD620 chip is adopted to realize the functions of removing impurities and amplifying signals, so that the cost is low, the use is simple, and related circuits are simple.

3. In the process of transmitting ultrasonic signals, sound wave vibration signals need to be converted into electric signals, so that an acoustic-electric signal conversion module is added, and smooth signal transmission is guaranteed.

4. The device has the characteristics of light weight, small size and strong portability, and is very suitable for being carried by live-line detection workers.

5. The instrument has simple power supply mode and strong anti-interference capability. The power supply adopts a USB interface for power supply, and can complete the power supply of the instrument only by connecting with a USB interface of a charger or a mobile phone charger.

Drawings

Fig. 1 is a schematic diagram of a charged ultrasonic partial discharge detection device of a GIS device.

Fig. 2 is a schematic view of the connecting seat.

Fig. 3 is a schematic front view of the connecting seat.

Fig. 4 is a left side view of the connecting seat.

Fig. 5 is a schematic view of mounting an ultrasonic detector.

Fig. 6 is a partially enlarged view of the internal structure at a in fig. 1.

FIG. 7 is a block diagram of a processor.

Fig. 8 is a circuit diagram of an amplifier.

Fig. 9 is a view showing a state of use of the present apparatus.

In the figure: the ultrasonic testing device comprises an ultrasonic detector 10, a processor 20, an acquisition unit 21, a processing unit 22, an amplifier 221, an acoustoelectric conversion unit 222, an output unit 23, a support rod 30, a connecting seat 40, a mounting section 41, a ring groove 411, a notch 412, a connecting section 42, a body 421, a pin shaft 422, a locking nut 423, a connecting block 424, a screw 425, a clamping piece 43, a display terminal 100 and an external device to be tested 200.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1-9, the embodiment of the utility model provides a GIS equipment electrified supersound partial discharge detection device, including ultrasonic detector 10, treater 20, bracing piece 30 is a stock, sets up connecting seat 40 at the tip of bracing piece 30, and the one end and the bracing piece 30 of connecting seat 40 are connected, and ultrasonic detector 10 is connected to the other end, and the detection face of the probe of ultrasonic detector 10 is towards the outside and is waited to examine equipment 200 setting, treater 20 sets up on bracing piece 30 lateral wall, and ultrasonic detector 10 is connected with treater 20 to with the acoustic information transmission who detects to treater 20, treater 20 and outside display terminal 100 wireless connection. The display terminal 100 may be a mobile phone, for example.

In the scheme, the processor can adopt an amplifier, the amplifier is used for amplifying the ultrasonic signals, and then the ultrasonic signals are output to the display terminal. Therefore, the amplifier and the ultrasonic detector 10 may be connected by a signal line, and the amplifier and the display terminal 100 may be connected by a signal line, or may be connected wirelessly, so that the signal input and output functions may be satisfied.

Further, connecting seat 40 includes installation section 41, linkage segment 42, chucking spare 43, installation section 41 is open-top's hollow casing, hollow casing's internal diameter is greater than the external diameter of ultrasonic detector 10's probe to supply the probe to insert casing internally mounted, still set up annular 411 on the outer wall that the casing is close to the oral area, still set up opening 412 on the casing oral area lateral wall, chucking spare 43 is the elastic component, the elastic component block is in the annular 411, linkage segment 42 sets up in the bottom of installation section 41, the upper end and the installation section 41 fixed connection of linkage segment 42, the tip swing joint of lower extreme and bracing piece 30.

After the probe is inserted into the mouth of the mounting section 41, in order to avoid the damage of rigid contact to the probe, the mounting section 41 is made of resin material, the width of the mouth can be adjusted by the arrangement of the notch 412, and after the probe is inserted, the mouth and the probe are clamped tightly by the opening and closing elastic piece.

Further, the connecting section 42 includes a body 421, a pin 422, a lock nut 423, a connecting block 424, a screw rod 425, an embedded sinking groove is further formed in the body 421, the upper end of the connecting block 424 is inserted into the embedded sinking groove, the upper end of the screw rod 425 is fixedly connected with the connecting block 424, the lower end of the screw rod 425 is in threaded connection with the supporting rod 30, transverse through holes for inserting the pin 422 are further formed in the body 421 and the connecting block 424, and the nut is connected with the pin 422.

Further, the processor 20 includes an acquisition unit 21, a processing unit 22, and an output unit 23, which are connected in sequence, the acquisition unit 21 is further connected to the ultrasonic detector 10 to receive the acoustic signal detected by the ultrasonic detector 10 and provide the acoustic signal to the processing unit 22, the processing unit 22 includes an amplifier 221 to amplify the received acoustic signal and provide the acoustic signal to the output unit 23, and the output unit 23 is further connected to the external display terminal 100 in a wireless manner.

Further, the amplifier 221 is an integrated and optimized AD620 chip, and a high-pass filter is respectively configured at the input end of the second pin and the input end of the third pin of the amplifier 221, where the high-pass filter is composed of a coupling capacitor and a ground resistor. So as to achieve the purpose of reducing low-frequency interference signals in the environment. For example, the coupling capacitor is selected to be 0.1 muF, and the ground resistor is selected to be 100k Ω.

Further, a seventh pin of the amplifier 221 is used for being connected to an external positive power supply, a fourth pin is used for being connected to an external negative power supply, the seventh pin and the fourth pin are further connected to a ceramic capacitor and a tantalum capacitor, respectively, an adjustment resistor is connected in series between the first pin and the eighth pin, the sixth pin serves as an output terminal, and the fifth pin serves as a ground terminal.

Further, in order to prevent noise from being coupled into the amplifier 221, a chip-packaged ceramic capacitor and a chip-packaged tantalum capacitor are connected to ground for each power supply pin, that is, the ceramic capacitor and the tantalum capacitor are connected to the seventh pin and the fourth pin, respectively, and a magnetic bead is connected in series to decouple the power supply.

The variable resistors connected to the pins 1 and 8 of the chip are gain adjusting resistors, and an accurate potentiometer with adjustable resistance value can be selected in the circuit design.

Further, the processor 20 further includes an acoustic-electric conversion unit 222 for converting the acoustic wave signal into an electric signal that can be recognized by the terminal, and the acoustic-electric conversion unit 222 is connected between the sixth pin of the amplifier 221 and the output unit 23.

For example, the acquisition unit 21, the output unit 23, and the acousto-electric conversion unit 222 can be implemented by integrating an fbs programmable controller and a daytronic signal conditioner on a chip.

Further, the processor 20 is disposed proximate to the ultrasonic detector 10.

In the 2018210172239 patent of the prior art, although an elongated support rod 30 is used to detect the proximity of a probe to a device, in this device, the signal of an ultrasonic probe extends from the device along a lead (5) to an amplifier 221 (6), the amplifier 221 (6) is close to an anti-slip sleeve, that is, close to the hand of an operator, in order to meet the length requirement of the support rod 30, the length of the lead (5) is made very long, because the ultrasonic signal itself has the technical problem that the ultrasonic signal is seriously attenuated due to external reasons such as reflection and absorption, when reaching the amplifier 221 (6), the amplifier 221 (6) receives a very weak signal, even if the original low-frequency interference signal exceeds the required sound signal acquired by the probe, even if the amplifier 221 (6) is used to amplify, the interference signal and the original signal can only be amplified together, the generated noise and noise are very large.

Therefore, in the scheme, in order to maintain the maximum integrity and definition transmission of the ultrasonic acquisition signal, the signal line of the ultrasonic detector 10 is not changed or shortened, the processor 20 is arranged close to the probe, the processor 20 is connected with the terminal through wireless transmission, and the problems of serious attenuation and serious low-frequency interference caused by overlong signal line are avoided as the wireless transmission range is large, the distance is long, the interference is small and attenuation is weakened.

Further, the processor 20 is detachably connected with the support rod 30. The housing of the disposer 20 is adhesively secured to the support rod 30, for example, by an adhesive layer.

Further, the length of the support bar 30 is adjustable.

For example, the support rod 30 may be formed by a plurality of segments that are connected in a butt joint manner, and two adjacent segments may be connected by a screw thread. The support rod 30 is made of an insulating material, such as epoxy resin.

The processor 20 further includes a charging unit, which is connected to the USB interface.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a GIS equipment electrified supersound partial discharge detection device which characterized in that: including ultrasonic detector, treater, bracing piece, the bracing piece is a stock, sets up the connecting seat at the tip of bracing piece, and the one end and the bracing piece of connecting seat are connected, and ultrasonic detector is connected to the other end, and the detection face of ultrasonic detector's probe is towards the equipment setting of waiting to examine of outside, the treater sets up on the bracing piece lateral wall, and ultrasonic detector is connected with the treater, treater and outside display terminal wireless connection.

2. The charged ultrasonic partial discharge detection device of the GIS equipment of claim 1, wherein: the connecting seat includes installation section, linkage segment, chucking spare, the installation section is open-top's hollow casing, the internal diameter of hollow casing is greater than the external diameter of ultrasonic detector's probe, still sets up the annular on the outer wall that the casing is close to the oral area, still sets up the opening on casing oral area lateral wall, chucking spare is the elastic component, the elastic component block is in the annular, the linkage segment sets up in the bottom of installation section, the upper end and the installation section fixed connection of linkage segment, the tip swing joint of lower extreme and bracing piece.

3. The charged ultrasonic partial discharge detection device of the GIS equipment of claim 2, wherein: the connecting section comprises a body, a pin shaft, a locking nut, a connecting block and a screw rod, an embedded sinking groove is formed in the body, the upper end of the connecting block is inserted into the embedded sinking groove, the upper end of the screw rod is fixedly connected with the connecting block, the lower end of the screw rod is in threaded connection with a supporting rod, transverse through holes for the pin shaft to be inserted are formed in the body and the connecting block, and the nut is connected with the pin shaft.

4. The charged ultrasonic partial discharge detection device of the GIS equipment of claim 1, wherein: the processor comprises an amplifier which is an integrated chip, and a high-pass filter is respectively configured at the input end of a second pin and the input end of a third pin of the amplifier, wherein the high-pass filter consists of a coupling capacitor and a grounding resistor.

5. The charged ultrasonic partial discharge detection device of the GIS device according to claim 4, characterized in that: the seventh pin of the amplifier is used for being connected with an external positive power supply, the fourth pin of the amplifier is used for being connected with an external negative power supply, the seventh pin and the fourth pin are respectively connected with a ceramic capacitor and a tantalum capacitor, a regulating resistor is connected between the first pin and the eighth pin in series, the sixth pin serves as an output terminal, and the fifth pin serves as a grounding terminal.

6. The charged ultrasonic partial discharge detection device of the GIS equipment of claim 1, wherein: the processor is disposed proximate to the ultrasonic detector.

7. The charged ultrasonic partial discharge detection device of the GIS equipment of claim 1, wherein: the processor is detachably connected with the supporting rod.

8. The charged ultrasonic partial discharge detection device of the GIS equipment of claim 1, wherein: the length of the supporting rod is adjustable.