CN203981822U - A kind of portable supersonic detects shelf depreciation diagnostic device online - Google Patents
A kind of portable supersonic detects shelf depreciation diagnostic device online Download PDFInfo
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- CN203981822U CN203981822U CN201420219644.5U CN201420219644U CN203981822U CN 203981822 U CN203981822 U CN 203981822U CN 201420219644 U CN201420219644 U CN 201420219644U CN 203981822 U CN203981822 U CN 203981822U
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Abstract
The utility model discloses a kind of portable supersonic and detect online shelf depreciation diagnostic device, comprise independently the first ultrasonic detecting probe, independently the second ultrasonic detecting probe and independently host-processor, the first ultrasonic detecting probe carries out wide region first and detects, determine the approximate range of shelf depreciation, exchange again the second ultrasonic detecting probe for and carry out for the second time accurately range detection, each detection need to send to host-processor by the signal detecting, first after filtering, amplifying circuit carries out the removal of impurities of collection signal and the amplification of signal, again the signal after amplifying is sent to digital regulation resistance, digital regulation resistance sends to analog-to-digital conversion module conversion by signal again, finally send to central processing unit to process, signal after treatment sends to display module to show on the one hand, facilitate staff to check shelf depreciation situation, discharged by earphone through power amplifier module on the other hand.
Description
Technical field
The utility model relates to the safety detection technology field of high voltage power transmission electrical equipment, relates in particular to a kind of portable supersonic for electricity grid substation and detects online shelf depreciation diagnostic device.
Background technology
At present, in electrical network, the Insulation Problems of power equipment is the primary factor that high voltage power transmission technology must be considered always.Insulating element is the important component part in high voltage electric equipment structure, and current statistical research shows, in all power failures, insulation fault proportion is larger.
The insulating property of electrical equipment can be analyzed by shelf depreciation, evaluate.Shelf depreciation is normally a kind of occurs in the electric discharge phenomena on the more inner atomic little spaces of insulating medium dispersedly, is considered to the omen of insulation fault.In electric system, a lot of operating equipment can be because environment and manufacturing process etc. are former thereby partial discharge phenomenon occurs.Electric discharge causes two kinds of destructions to insulator arrangement: one is because electric discharge particle directly bombards insulating element, minor insulation is damaged and progressively expands, and causes insulation breakdown.Another kind is heat, the ozone of discharge generation, the chemical action of nitrogen oxide isoreactivity gas, and minor insulation is corroded, and dielectric loss increases, and finally causes thermal breakdown.At present, adopt detection, analyze this electric discharge phenomena, can provide valuable information for the integrality of insulation system.
The detection method of shelf depreciation is mainly pulse current detection method pulse current method.The method can record respectively the multiple offices such as discharge capacity, electric discharge repetition rate and average current, discharge energy and put characteristic quantity.Its ultimate principle is to detect by detecting impedance the pulse current that shelf depreciation causes, thereby obtains the information of shelf depreciation.Press the difference of test loop, pulse current method can be divided into again " directly surveying method " and " balancing method " two kinds.Straight survey method is directly measured pulse current that shelf depreciation produces in the pulse voltage that detects the response of impedance two ends; Balancing method has the multiple test loops such as Schering bridge, difference electric bridge and double bridge, is mainly the ability in order to strengthen anti-external interference.Generally speaking, pulse current method is subject to the impact of on-the-spot electromagnetic interference (EMI), partial discharge pulse's signal extraction difficulty, in the time detecting, equipment under test need to be spun off from electrical network, because the volume of equipment under test is large, quality weight, in the time departing from, need to consume a large amount of manpower and materials, therefore power supply production be produced to certain influence, and extended the maintenance of equipment cycle.
In sum, the detection of partial discharge phenomenon in electrical network is badly in need of to one pick-up unit accurately and fast, this device should meet the various demands in Daily Round Check.
Utility model content
The purpose of this utility model is to provide a kind of portable supersonic and detects online shelf depreciation diagnostic device, can detect fast and accurately online the partial discharge phenomenon of equipment under test, simple in structure, easy to operate, use flexibly, reduce maintenance sense cycle, increase work efficiency.
The technical solution adopted in the utility model is:
A kind of portable supersonic detects shelf depreciation diagnostic device online, comprise independently the first ultrasonic detecting probe, independently the second ultrasonic detecting probe and host-processor independently, the first ultrasonic detecting probe comprises the expansion spy cylinder of both ends open, one end of expanding spy cylinder is heavy caliber, the other end is small-bore, the small-caliber end that expands spy cylinder connects by precision regulating ring the connecting cylinder that straight-tube shape ultrasonic sensor front end is provided with, straight-tube shape ultrasonic sensor outer wall is provided with pushbutton switch, and the end of straight-tube shape ultrasonic sensor is provided with cable outlet, the second ultrasonic detecting probe structure is identical with the first ultrasonic detecting probe, host-processor comprises rectangular structure shell, the front of shell is provided with display window, the back side of shell is provided with jack, the end of straight-tube shape ultrasonic sensor inserts in jack, and cable exports the cable interface that the jack bottom that is connected is provided with, the lower surface of shell connects Handheld Division, is provided with battery accommodating chamber in Handheld Division, and the outside surface of Handheld Division is provided with supply hub, in shell, be provided with filtering, amplification module, filtering, the signal input part of amplification module connects the signal output part of ultrasonic detecting probe, filtering, the signal output part of amplification module connects the signal input part of digital regulation resistance, the signal output part of digital regulation resistance connects the signals collecting input end of central processing unit through analog-to-digital conversion module, the signal output part of central processing unit connects the input end of display module and power amplifier module, the output terminal frames connecting with headphone jack of power amplifier module, the control end of central processing unit connects digital regulation resistance, central processing unit power end connects battery, battery is located at battery accommodating chamber.
The small-caliber end outer wall that cylinder is visited in described expansion is provided with screw thread, on precision regulating ring inwall, coordinates and is provided with screw thread, and connecting cylinder outer wall is provided with screw thread, and precision regulating ring two ends are threaded respectively and expand small-caliber end and the connecting cylinder front end of visiting cylinder.
The described overall diameter of straight-tube shape ultrasonic sensor and the equal diameters of jack.
Described central processing unit is also connected with clock circuit and memory module.
Described precision regulating ring is provided with handle.
The detection ultrasound wave central frequency range of the first described ultrasonic detecting probe is 40KHz, and the detection ultrasound wave central frequency range of the second ultrasonic detecting probe is 100KHz.
The utility model utilizes the first ultrasonic detecting probe to carry out wide region first and detects, determine the approximate range of shelf depreciation, exchange again the second ultrasonic detecting probe for and carry out for the second time accurately range detection, each detection need to send to host-processor by the signal detecting, first after filtering, amplifying circuit carries out the removal of impurities of collection signal and the amplification of signal, again the signal after amplifying is sent to digital regulation resistance, digital regulation resistance sends to analog-to-digital conversion module conversion by signal again, finally send to central processing unit, the signal of central processing unit sends to display module to show on the one hand, facilitate staff to check shelf depreciation situation, discharged by earphone through power amplifier module on the other hand, the utility model can detect the partial discharge phenomenon of equipment under test online fast and accurately, simple in structure, easy to operate, use flexibly, reduces maintenance sense cycle, increases work efficiency.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the first ultrasonic detecting probe structural representation of the present utility model;
Fig. 3 is host-processor circuit theory diagrams of the present utility model;
Fig. 4 is that the excellent plate of the utility model embodiment 1 is put time domain waveform figure without office;
Fig. 5 is that the excellent plate of the utility model embodiment 1 has office to put time domain waveform figure;
Fig. 6 is that the excellent plate of the utility model embodiment 1 is put frequency-domain waveform figure without office;
Fig. 7 is that the excellent plate of the utility model embodiment 1 has office to put frequency-domain waveform figure;
Fig. 8 is that the large knitting needle of the utility model embodiment 1 is put time domain waveform figure without office;
Fig. 9 is that the large knitting needle of the utility model embodiment 1 has office to put time domain waveform figure;
Figure 10 is that the large knitting needle of the utility model embodiment 1 is put frequency-domain waveform figure without office;
Figure 11 is that the large knitting needle of the utility model embodiment 1 has office to put frequency-domain waveform figure;
Figure 12 is that the needle plate of the utility model embodiment 1 is put time domain waveform figure without office;
Figure 13 is that the needle plate of the utility model embodiment 1 has office to put time domain waveform figure;
Figure 14 is that the needle plate of the utility model embodiment 1 is put frequency-domain waveform figure without office;
Figure 15 is that the needle plate of the utility model embodiment 1 has office to put frequency-domain waveform figure.
Embodiment
As shown in Figure 1,2 and 3, the utility model comprises independently the first ultrasonic detecting probe, independently the second ultrasonic detecting probe and host-processor independently, and ultrasonic detecting probe can be spot-check dismounting with host-processor and be connected, and handled easily, carries.As shown in Figure 2, the first ultrasonic detecting probe comprises the expansion spy cylinder 8 of both ends open, and one end of expanding spy cylinder 8 is heavy caliber, and the other end is small-bore, and expansion is visited cylinder 8 and is horn-like, conveniently finds the ultrasonic restriction searching scope that involves, the small-caliber end 8-2 that expands spy cylinder 8 connects by precision regulating ring 9 connecting cylinder 11 that straight-tube shape ultrasonic sensor 12 front ends are provided with, the small-caliber end 8-2 outer wall that expands spy cylinder 8 is provided with screw thread, on precision regulating ring 9 inwalls, coordinate and be provided with screw thread, connecting cylinder 11 outer walls are provided with screw thread, precision regulating ring 9 two ends are threaded respectively and expand small-caliber end 8-2 and connecting cylinder 11 front ends of visiting cylinder 8, precision regulating ring 9 is provided with handle 10, regulate the size of sensing range by turning handle 10, straight-tube shape ultrasonic sensor 12 outer walls are provided with pushbutton switch 13, switch 13 is for starting ultrasonic sensor, in the time not needing to detect, cut-off switch 13, save electric weight, the end of straight-tube shape ultrasonic sensor 12 is provided with cable outlet 14, the second ultrasonic detecting probe structure is identical with the first ultrasonic detecting probe, but detect ultrasound wave centre frequency difference, the detection ultrasound wave central frequency range of the first ultrasonic detecting probe is 40KHz, the detection ultrasound wave central frequency range of the second ultrasonic detecting probe is 100KHz, the first ultrasonic detecting probe detects for wide region, and the second ultrasonic detecting probe is for accurately detecting.Host-processor comprises rectangular structure shell 1, the left side of shell 1 is provided with earphone jack 7, the front of shell 1 is provided with display window 2, the back side of shell 1 is provided with jack 3, the end of straight-tube shape ultrasonic sensor 12 inserts in jack 3, and cable outlet 14 cable interface that jack 3 bottoms are provided with that is connected, the equal diameters of the overall diameter of straight-tube shape ultrasonic sensor 12 and jack 3, the lower surface of shell 1 connects Handheld Division 4, in Handheld Division 4, be provided with battery accommodating chamber 6, the outside surface of Handheld Division 4 is provided with supply hub 5, in shell 1, be provided with filtering, amplification module, filtering, the signal input part of amplification module connects the signal output part of ultrasonic detecting probe, filtering, the signal output part of amplification module connects the signal input part of digital regulation resistance, the signal output part of digital regulation resistance connects the signals collecting input end of central processing unit through analog-to-digital conversion module, the signal output part of central processing unit connects the input end of display module and power amplifier module, the output terminal frames connecting with headphone jack 7 of power amplifier module, the control end of central processing unit connects digital regulation resistance, central processing unit power end connects battery, battery is located in battery accommodating chamber 6, central processing unit is also connected with clock circuit and memory module.
Describe principle of work of the present utility model below in detail:
A large amount of experimental studies proves that partial discharge phenomenon is all accompanied by acoustic emission phenomenon, and the various electric discharge types of analyzing and researching are found to follow the ultrasonic signal frequency that electric discharge is sent to concentrate between 20KHz ~ 40KHz and 80KHz ~ 140KHz.The utility model uses two kinds of different model ultrasonic sensors, receive respectively two kinds of ultrasonic signals in frequency range, what carry out for the first time is the measurement of wide region, the detection ultrasound wave central frequency range of the first ultrasonic detecting probe is 40KHz, first the end of the straight-tube shape ultrasonic sensor 12 of the first ultrasonic detecting probe is inserted in the jack 3 at shell 1 back side, staff takes and holds Handheld Division 4, the heavy caliber end 8-1 that expands spy cylinder 8 is carried out at line sweep electric equipment under test, not needing that equipment under test is departed to original equipment detects, scanning first, can roughly determine equipment under test on a large scale in have partial discharge phenomenon, simultaneously, the length that can be connected by hand rotation handle 10 degree of regulation regulating rings 9 and expansion spy cylinder 8 and connecting cylinder 11, thereby regulate the size of sensing range.The ultrasonic signal detecting is sent to filtering by the first ultrasonic detecting probe, amplifying circuit carries out the removal of impurities of collection signal and the amplification of signal, again the signal after amplifying is sent to digital regulation resistance, digital regulation resistance sends to analog-to-digital conversion module conversion by signal again, finally send to central processing unit to process, contrast, signal after treatment sends to display module to show on the one hand, facilitate staff to check, discharged by earphone through power amplifier module on the other hand, wide region detects complete, staff can probably judge the position of shelf depreciation.Now, the first ultrasonic detecting probe is unloaded from jack 3, again the second ultrasonic detecting probe is inserted in the jack 3 of shell 1 according to the mode that the first ultrasonic detecting probe is installed, after installing, the approximate range detecting is for the first time carried out to detailed surface sweeping, the detection ultrasound wave central frequency range of the second ultrasonic detecting probe is 100KHz, can detect accurately partial discharge position, after scanning, the information of collection is sent to filtering, amplifying circuit carries out the removal of impurities of collection signal and the amplification of signal, again the signal after amplifying is sent to digital regulation resistance, digital regulation resistance sends to analog-to-digital conversion module conversion by signal again, finally send to central processing unit to carry out the processing of time domain and frequency domain, finally determine ultrasonic frequency, send to display module to show the waveform of this ultrasonic frequency again, facilitate staff to check, discharged by earphone through power amplifier module on the other hand, in the process of central processing unit processing, need to further determine information, now, by regulating digital regulation resistance can screen the ultrasound wave of useful band, again show and discharge sound by earphone.Clock circuit and memory module record moment and the detection case of shelf depreciation, facilitate the later stage to check.The process of the central processing unit processing described in the utility model, belongs to existing mature technology in the art, does not repeat them here.It is KS-A1040H07 that the first ultrasonic detecting probe of the present utility model adopts signal, and it is DYA-100-01G that the second ultrasonic detecting probe adopts signal.
Because electric discharge is always accompanied by acoustic emission phenomenon, also different according to the acoustic emission signal of dissimilar electric discharge correspondence, from oscillogram, can judge is which parts electric discharge of equipment under test, embodiment 1, as shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, for excellent plate discharge off, the time domain that has electric discharge, frequency-domain waveform figure, Fig. 4 is for putting time domain waveform figure without office, Fig. 5 is for there being office to put time domain waveform figure, Fig. 6 is for putting frequency-domain waveform figure without office, Fig. 7 is for there being office to put frequency-domain waveform figure, can find out waveform and the amplitude while having office to put from oscillogram.Embodiment 2, as shown in Fig. 8, Fig. 9, Figure 10, Figure 11, time domain, frequency-domain waveform figure while electric discharge for large knitting needle, Fig. 8 is for putting time domain waveform figure without office, and Fig. 9 is for there being office to put time domain waveform figure, and Figure 10 is for putting frequency-domain waveform figure without office, and Figure 11 is for there being office to put frequency-domain waveform figure.Embodiment 3, as shown in Figure 12, Figure 13, Figure 14, Figure 15, time domain, frequency-domain waveform figure while electric discharge for needle plate, Figure 12 is for putting time domain waveform figure without office, and Figure 13 is for there being office to put time domain waveform figure, and Figure 14 is for putting frequency-domain waveform figure without office, and Figure 15 is for there being office to put frequency-domain waveform figure.
Claims (6)
1. a portable supersonic detects shelf depreciation diagnostic device online, it is characterized in that: comprise independently the first ultrasonic detecting probe, independently the second ultrasonic detecting probe and independently host-processor, the first ultrasonic detecting probe comprises the expansion spy cylinder of both ends open, one end of expanding spy cylinder is heavy caliber, the other end is small-bore, the small-caliber end that expands spy cylinder connects by precision regulating ring the connecting cylinder that straight-tube shape ultrasonic sensor front end is provided with, straight-tube shape ultrasonic sensor outer wall is provided with pushbutton switch, the end of straight-tube shape ultrasonic sensor is provided with cable outlet, the second ultrasonic detecting probe structure is identical with the first ultrasonic detecting probe, host-processor comprises rectangular structure shell, the left side of shell is provided with earphone jack, the front of shell is provided with display window, the back side of shell is provided with jack, the end of straight-tube shape ultrasonic sensor inserts in jack, and cable exports the cable interface that the jack bottom that is connected is provided with, the lower surface connection Handheld Division of shell, in Handheld Division, be provided with battery accommodating chamber, the outside surface of Handheld Division is provided with supply hub, in shell, be provided with filtering, amplification module, filtering, the signal input part of amplification module connects the signal output part of ultrasonic detecting probe, filtering, the signal output part of amplification module connects the signal input part of digital regulation resistance, the signal output part of digital regulation resistance connects the signals collecting input end of central processing unit through analog-to-digital conversion module, the signal output part of central processing unit connects the input end of display module and power amplifier module, the output terminal frames connecting with headphone jack of power amplifier module, the control end of central processing unit connects digital regulation resistance, central processing unit power end connects battery, battery is located at battery accommodating chamber.
2. portable supersonic according to claim 1 detects shelf depreciation diagnostic device online, it is characterized in that: the small-caliber end outer wall that cylinder is visited in described expansion is provided with screw thread, on precision regulating ring inwall, coordinate and be provided with screw thread, connecting cylinder outer wall is provided with screw thread, and precision regulating ring two ends are threaded respectively and expand small-caliber end and the connecting cylinder front end of visiting cylinder.
3. portable supersonic according to claim 2 detects shelf depreciation diagnostic device online, it is characterized in that: the described overall diameter of straight-tube shape ultrasonic sensor and the equal diameters of jack.
4. portable supersonic according to claim 3 detects shelf depreciation diagnostic device online, it is characterized in that: described central processing unit is also connected with clock circuit and memory module.
5. portable supersonic according to claim 4 detects shelf depreciation diagnostic device online, it is characterized in that: described precision regulating ring is provided with handle.
6. portable supersonic according to claim 5 detects shelf depreciation diagnostic device online, it is characterized in that: the detection ultrasound wave central frequency range of the first described ultrasonic detecting probe is 40KHz, the detection ultrasound wave central frequency range of the second ultrasonic detecting probe is 100KHz.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420219644.5U CN203981822U (en) | 2014-04-30 | 2014-04-30 | A kind of portable supersonic detects shelf depreciation diagnostic device online |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420219644.5U CN203981822U (en) | 2014-04-30 | 2014-04-30 | A kind of portable supersonic detects shelf depreciation diagnostic device online |
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| CN203981822U true CN203981822U (en) | 2014-12-03 |
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| CN201420219644.5U Expired - Fee Related CN203981822U (en) | 2014-04-30 | 2014-04-30 | A kind of portable supersonic detects shelf depreciation diagnostic device online |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926513A (en) * | 2014-04-30 | 2014-07-16 | 国网河南省电力公司商丘供电公司 | Portable ultrasonic online detection partial discharge diagnostic device |
| CN114689998A (en) * | 2022-02-22 | 2022-07-01 | 上海格鲁布科技有限公司 | Portable dial partial discharge detection device, system and method |
-
2014
- 2014-04-30 CN CN201420219644.5U patent/CN203981822U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926513A (en) * | 2014-04-30 | 2014-07-16 | 国网河南省电力公司商丘供电公司 | Portable ultrasonic online detection partial discharge diagnostic device |
| CN103926513B (en) * | 2014-04-30 | 2016-08-17 | 国家电网公司 | A kind of portable supersonic on-line checking shelf depreciation diagnostic device |
| CN114689998A (en) * | 2022-02-22 | 2022-07-01 | 上海格鲁布科技有限公司 | Portable dial partial discharge detection device, system and method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |