CN110160634A - Reactor abnormal sound measuring device and its method - Google Patents
Reactor abnormal sound measuring device and its method Download PDFInfo
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- CN110160634A CN110160634A CN201910494517.3A CN201910494517A CN110160634A CN 110160634 A CN110160634 A CN 110160634A CN 201910494517 A CN201910494517 A CN 201910494517A CN 110160634 A CN110160634 A CN 110160634A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Disclose reactor abnormal sound measuring device and its method, in device, shell includes front surface and upper surface towards reactor to be measured, the ultrasound transducer probe for the ultrasonic signal that acquisition reactor issues in real time is located at the front end of the shell with towards the reactor, the ultrasonic signal of acquisition is converted to voltage signal by the ultrasound transducer probe, the laser range sensor of acquisition reactor distance signal is located at the front end of the shell in real time, it includes the laser emission element with optical filter and the laser pick-off unit with optical filter, display unit is arranged in the upper surface, processing unit connects the ultrasound transducer probe, laser range sensor and display unit, wherein, in response to the voltage signal and the distance signal, processing unit is synchronous to be generated ultrasound intensity data and range data and is shown in the display unit.
Description
Technical field
The present invention relates to substation's dry reactor on-line monitoring technique field in distribution system, especially a kind of reactor
Abnormal sound measuring device and its method.
Background technique
Reactor is the important equipment in electric system, and it is short to play the spuious capacity current of compensation, limitation inrush phenomenon, limitation
The effects of road electric current, filtering, wave arrestment.In current electric system, the utilization rate of dry reactor is very high, but due to its knot
Structure feature, makes that it is easy to happen the failures such as shelf depreciation and insulation damages, turn-to-turn short circuit and fastener installation insecure causes
Threat, influence the stable operation of power grid.
Dry reactor is the important compensation class equipment of substation.Sound abnormal sound is the most common failure of dry reactor.It is different
Ringing may be there are two types of main cause: first is that under the action of electric power, dry reactor ontology bolt looseness, or wherein have different
Object vibration, generates abnormal sound.Second is that because dampness leads to external creeping discharge, or because insulation harm leads to internal turn-to-turn short circuit.?
While electric fault occurs, ontology is often accompanied by rapid temperature rise phenomenon, and reactor can be even burnt when serious.Due to
Dry reactor working environment is complex under normal conditions, is allowed to the probability to break down increase, and due to reactor
Manufacture threshold is lower, manufactures producer's quantity of reactor mostly and production level is irregular, and material therefor also differs larger,
It is easy to cause reactor quality problems occur.It can by being counted to the incidental fault type of reactor in practical application
, the common failure of dry reactor mainly have hot-spot, turn-to-turn insulation damage, leakage field the problems such as lead to surrounding metal structure
Part, grounded screen, high-voltage board are inscribed line terminals loss and fever, fastener support frame etc. and install the failures such as insecure.Patrol officer
The defect failure being difficult to during inspection inside the abnormal sound discovery run by reactor.
In conclusion reactor abnormal sound especially discharges, the abnormal sound of class failure characterizes equipment in the presence of bad shape electrically
Condition, by abnormal sound we can defect existing for discovering device early, handled in time, avoid the generation of accident.From dry
The method of formula reactor abnormal sound detection, it is anticipated that find Reactor Fault sign to property, handle it in advance to it, guarantee to set
Standby safe and reliable operation.
Disclosed above- mentioned information are used only for enhancing the understanding to background of the present invention in the background section, it is thus possible to
Information comprising not constituting the prior art known to a person of ordinary skill in the art.
Summary of the invention
In view of the above problems, the incipient fault threat that dry reactor is found during inspection for convenience, simultaneously
It can be avoided the electromagnetic interference at scene and meet sensitivity requirement, reactor can be detected using the method for ultrasound examination
Discharge information, the function of abnormal sound severity and measurement point location information can be obtained simultaneously on a handheld device by realizing.
The purpose of the present invention is be achieved by the following technical programs.
A kind of reactor abnormal sound measuring device includes,
Shell comprising front surface and upper surface towards reactor to be measured,
Ultrasound transducer probe, the ultrasound transducer probe for acquiring the ultrasonic signal that reactor issues in real time are located at the shell
Front end with towards the reactor, the ultrasonic signal of acquisition is converted to voltage signal by the ultrasound transducer probe,
Laser range sensor, before the laser range sensor of acquisition reactor distance signal is located at the shell in real time
End comprising the laser emission element with optical filter and the laser pick-off unit with optical filter,
Display unit is arranged in the upper surface,
Processing unit connects the ultrasound transducer probe, laser range sensor and display unit, wherein in response to
The voltage signal and the distance signal, processing unit is synchronous to be generated ultrasound intensity data and range data and is shown in institute
State display unit.
In the reactor abnormal sound measuring device, ultrasound transducer probe includes the signal of the ultrasonic signal of pretreatment acquisition
Pretreatment unit, modulus sampling unit and the central processing unit that ultrasonic signal is converted to voltage signal, the Signal Pretreatment
Unit includes amplifier.
In the reactor abnormal sound measuring device, ultrasound transducer probe acquire in real time reactor sending 30kHz~
The ultrasonic signal of 50kHz frequency range, the laser range sensor size is less than 20*22*15mm and measurement distance range is greater than 15
Rice.
In the reactor abnormal sound measuring device, the optical filter receives the laser of preset range wavelength, the display
Unit is liquid crystal display.
In the reactor abnormal sound measuring device, the shell is equipped at its both ends for hand-held handle.
In the reactor abnormal sound measuring device, the processing unit includes that sample rate is greater than 100kHz and amplification factor
The detection unit of sampling unit greater than 100 times and the envelope peak for voltage signal and passes through transformation of scale and obtain ultrasound letter
The computing unit of bugle call intensity.
In the reactor abnormal sound measuring device, simultaneously rows of openings makes the ultrasound transducer probe and swashs the front surface
Ligh-ranging sensor is towards the reactor；Ultrasound transducer probe welds the processing unit, and laser range sensor passes through letter
Number line connects processor, and display unit is connected by winding displacement with processing unit.
In the reactor abnormal sound measuring device, the rear surface of the shell is equipped with the charging interface for charging.
In the reactor abnormal sound measuring device, processing unit includes digital signal processor, specific integrated circuit
ASIC or on-site programmable gate array FPGA, processing unit include one or more read only memory ROMs, random access memory
RAM, flash memory or Electrical Erasable programmable read only memory EEPROM.
According to another aspect of the present invention, a kind of measurement method of the reactor abnormal sound measuring device includes following step
Suddenly,
The front surface of shell makes ultrasound transducer probe and laser range sensor towards electricity to be measured towards reactor to be measured
Anti- device,
Ultrasound transducer probe acquires the ultrasonic signal of reactor sending in real time and is converted to voltage signal, laser ranging sensing
Device acquires reactor distance signal in real time,
In response to the voltage signal and the distance signal, processing unit is synchronous to generate ultrasound intensity data and distance
Data, display unit Dynamically Announce current ultrasonic intensity data and range data.
Compared with prior art, the beneficial effects of the present invention are:
The distance for measuring dry reactor abnormal sound can be made to be fixed using the present invention, it is uncertain to different to exclude distance
The influence for ringing measurement, quantifies abnormal sound using decibel measurement function, carries out tracking observation to equipment, early discovering device
Potentiality failure improves the judgement to equipment bad condition, excludes human ear and sound is listened to avoid unnecessary the erroneous judgement of equipment abnormal sound
Interruption maintenance, test improve the stability of power grid and the utilization rate of equipment.Present invention is generally directed to substation's dry reactors
The ultrasonic signal that abnormal sound generates is test object, assists that it is serious abnormal sound can be obtained simultaneously on a handheld device with laser ranging
Degree and measurement point location information have the characteristics that portable degree height, strong real-time, high sensitivity.
The above description is only an overview of the technical scheme of the present invention, in order to make technological means of the invention clearer
Understand, reach the degree that those skilled in the art can be implemented in accordance with the contents of the specification, and in order to allow the present invention
Above and other objects, features and advantages can be more clearly understood, illustrated below with a specific embodiment of the invention
Explanation.
Detailed description of the invention
By reading the detailed description in hereafter preferred embodiment, various other advantages and benefits of the present invention
It will become apparent to those of ordinary skill in the art.Figure of description only for the purpose of illustrating preferred embodiments,
And it is not to be construed as limiting the invention.It should be evident that drawings discussed below is only some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.And throughout the drawings, identical component is presented with like reference characters.
In the accompanying drawings:
Fig. 1 is the ultrasonic sensor schematic diagram of reactor abnormal sound measuring device according to an embodiment of the invention；
Fig. 2 is the laser range sensor signal of reactor abnormal sound measuring device in accordance with another embodiment of the present invention
Figure；
Fig. 3 is the body diagram of reactor abnormal sound measuring device in accordance with another embodiment of the present invention；
Fig. 4 is the display unit schematic diagram of reactor abnormal sound measuring device in accordance with another embodiment of the present invention；
Fig. 5 is the step schematic diagram of measurement method according to an embodiment of the invention.
Below in conjunction with drawings and examples, the present invention will be further explained.
Specific embodiment
The specific embodiment that the present invention will be described in more detail below with reference to accompanying drawings.Although being shown in attached drawing of the invention
Specific embodiment, it being understood, however, that may be realized in various forms the present invention without that should be limited by embodiments set forth here
System.It is to be able to thoroughly understand the present invention on the contrary, providing these embodiments, and can be complete by the scope of the present invention
Be communicated to those skilled in the art.
It should be noted that having used some vocabulary in the specification and claims to censure specific components.Ability
Field technique personnel it would be appreciated that, technical staff may call the same component with different nouns.This specification and right
It is required that not in such a way that the difference of noun is as component is distinguished, but with the difference of component functionally as differentiation
Criterion."comprising" or " comprising " as mentioned throughout the specification and claims are an open language, therefore should be solved
It is interpreted into " including but not limited to ".Specification subsequent descriptions are to implement better embodiment of the invention, so the description be with
For the purpose of the rule of specification, the range that is not intended to limit the invention.Protection scope of the present invention is when the appended right of view
It is required that subject to institute's defender.
In order to facilitate understanding of embodiments of the present invention, further by taking specific embodiment as an example below in conjunction with attached drawing to be solved
Explanation is released, and each attached drawing does not constitute the restriction to the embodiment of the present invention.
In order to better understand, as Figure 1-Figure 4, a kind of reactor abnormal sound measuring device includes,
Shell comprising front surface and upper surface towards reactor to be measured,
Ultrasound transducer probe, the ultrasound transducer probe for acquiring the ultrasonic signal that reactor issues in real time are located at the shell
Front end with towards the reactor, the ultrasonic signal of acquisition is converted to voltage signal by the ultrasound transducer probe,
Laser range sensor, before the laser range sensor of acquisition reactor distance signal is located at the shell in real time
End comprising the laser emission element with optical filter and the laser pick-off unit with optical filter,
Display unit is arranged in the upper surface,
Processing unit connects the ultrasound transducer probe, laser range sensor and display unit, wherein in response to
The voltage signal and the distance signal, processing unit is synchronous to be generated ultrasound intensity data and range data and is shown in institute
State display unit.
Reactor abnormal sound measuring device of the invention is detected by the measurement means of non electrical quantity occurs part inside reactor
The ultrasonic signal generated when electric discharge, while with laser ranging auxiliary judgment discharge position；It is fixed with receipts on hand-held sandwich type element
The ultrasound transducer probe of mixer, in real time acquisition export current ultrasonic signal, while the Laser Measuring of fixed anti-natural light interference
Away from sensor, distance between equipment and measured object is acquired；Ultrasonic signal inputs together with ranging information after amplifier is handled
Processor；Treated that information shows current ultrasound intensity and measurement by the liquid crystal display that back side of shell is embedded in for processor
Point is at a distance from test equipment.The present invention is test object for the ultrasonic signal that substation's dry reactor abnormal sound generates, auxiliary
It helps with laser ranging, abnormal sound severity and measurement point location information can be obtained simultaneously on a handheld device, there is portable degree
The features such as height, strong real-time, high sensitivity.
In the preferred embodiment of the reactor abnormal sound measuring device, ultrasound transducer probe includes the super of pretreatment acquisition
Signal Pretreatment unit, modulus sampling unit and the central processing unit that ultrasonic signal is converted to voltage signal of acoustical signal, institute
Stating Signal Pretreatment unit includes amplifier.
In the preferred embodiment of the reactor abnormal sound measuring device, ultrasound transducer probe acquires reactor sending in real time
30kHz~50kHz frequency range ultrasonic signal, the laser range sensor size be less than 20*22*15mm and measurement apart from model
It encloses and is greater than 15 meters.
In the preferred embodiment of the reactor abnormal sound measuring device, the optical filter receives swashing for preset range wavelength
Light, the display unit are liquid crystal display.
In the preferred embodiment of the reactor abnormal sound measuring device, the shell is equipped at its both ends for hand-held
Handle.
In the preferred embodiment of the reactor abnormal sound measuring device, the processing unit includes that sample rate is greater than
100kHz and amplification factor are greater than 100 times of sampling unit and the detection unit of the envelope peak for voltage signal and pass through ratio
Example transformation obtains the computing unit of ultrasonic signal sound intensity degree.
In the preferred embodiment of the reactor abnormal sound measuring device, simultaneously rows of openings makes the ultrasound to the front surface
Sensing probe and laser range sensor are towards the reactor；Ultrasound transducer probe welds the processing unit, laser ranging
Sensor connects processor by signal wire, and display unit is connected by winding displacement with processing unit.
In the preferred embodiment of the reactor abnormal sound measuring device, the rear surface of the shell is equipped with for charging
Charging interface.
In the preferred embodiment of the reactor abnormal sound measuring device, processing unit include digital signal processor, specially
With integrated circuit ASIC or on-site programmable gate array FPGA, processing unit includes one or more read only memory ROMs, random
Access memory RAM, flash memory or Electrical Erasable programmable read only memory EEPROM.
In the preferred embodiment of the reactor abnormal sound measuring device, using the common shelf depreciation ultrasonic signal of correspondence
Frequency range (30kHz~50kHz), corresponding smoothly ultrasound transducer probe acquire ultrasonic signal, output for ultrasonic signal at than
The voltage signal of example.
In the preferred embodiment of the reactor abnormal sound measuring device, using (being less than 20*22*15mm) small in size, inspection
The ranging laser transmitting-receiving rangefinder good from remote (being greater than 15m), stability, Laser emission and reception position are equipped with optical filter, resist
Natural light interference performance is strong, and output is exported by serial ports.
In the preferred embodiment of the reactor abnormal sound measuring device, in shell front and rows of openings installation sensor；
Ultrasound transducer probe is welded on digiboard, and laser range sensor is connected in digital version by signal wire；Back side of shell is embedding
Enter liquid crystal display, screen is connected by winding displacement with digiboard；
In the preferred embodiment of the reactor abnormal sound measuring device, current time is shown on liquid crystal display interface
With the ultrasonic sound intensity information of inspector present position and with the range information of reactor, data show with dynamic change ability,
Real-time refresh data and current abnormal sound numerical value and distance can be shown during tour.
In the preferred embodiment of the reactor abnormal sound measuring device, reactor abnormal sound measuring device passes through non electrical quantity
The ultrasonic signal generated when shelf depreciation occurs inside measurement means detection reactor, while being discharged with laser ranging auxiliary judgment
Position；The fixed ultrasound transducer probe for having audio signal reception device on hand-held sandwich type element, acquisition exports current ultrasonic signal in real time,
The laser range sensor of anti-natural light interference fixed simultaneously, acquires distance between equipment and measured object；Ultrasonic signal is through over-sampling
After enhanced processing, the input processor together with ranging information；Processor treated liquid crystal that information is embedded in by back side of shell
Display screen shows current ultrasound intensity and measurement point at a distance from test equipment.
In the preferred embodiment of the reactor abnormal sound measuring device, the shelf depreciation ultrasonic signal of above-mentioned non electrical quantity is surveyed
The feature of amount means are as follows: use the frequency range (30kHz~50kHz) of corresponding common shelf depreciation ultrasonic signal, accordingly smoothly surpass
Sound sensing probe acquires ultrasonic signal, and output is the voltage signal proportional to ultrasonic signal.
In the preferred embodiment of the reactor abnormal sound measuring device, in shell front and rows of openings installation sensor；
Ultrasound transducer probe is welded on digiboard, and laser range sensor is connected in digital version by signal wire；Back side of shell is embedding
Enter liquid crystal display, screen is connected by winding displacement with digiboard.
In the preferred embodiment of the reactor abnormal sound measuring device, using high sampling rate (being greater than 100kHz) and stablize
The Data Acquisition Card of amplification factor (being greater than 100 times) samples ultrasonic sensor output signal；Processor passes through preposition
Detection module obtains the envelope peak of ultrasonic signal, obtains ultrasonic signal sound intensity degree by transformation of scale, while adopting to obtain Laser Measuring
Away from range information, send information to display in real time.
In the preferred embodiment of the reactor abnormal sound measuring device, current time and inspector institute are shown on interface
The ultrasonic sound intensity information and the range information with reactor, data for locating position are shown with dynamic change ability, can maked an inspection tour
Real-time refresh data and show current abnormal sound numerical value and distance in the process.
For a further understanding of the present invention, in the preferred embodiment of the reactor abnormal sound measuring device, Fig. 1 is seen, pass
Sensor is super by the dry reactor abnormal sound that Signal Pretreatment, modulus sampling, central processing unit, power management module will test
Acoustical signal is converted into electric signal；See Fig. 2, this is illustrated as laser range sensor measuring principle.Sensor is connect using voluntarily transmitting
Zlasing mode is received, is judged at a distance between measured object and sensor by the time delay for receiving signal with emitting signal.To avoid nature
Interference of the light to transducer receivers covers optical filter before transmitting/reception window of sensor so that only sensor from
The laser of the wavelength of body transmitting can pass through optical filter, guarantee the reliability of measurement data；See Fig. 3, which gives hand-held
The model schematic of formula measuring instrument.Ultrasonic sensor and laser range sensor are placed in the aperture of measuring instrument front, and the back side is embedded in liquid
Two handles are arranged in crystal display screen, end, and convenient hand-held use, there is charging interface in bottom, can charge directly to measuring instrument；See
Fig. 4, the diagram give the interface setting of liquid crystal display.The top of screen shows measuring instrument title and time and battery capacity
Information.The range information and ultrasonic measurement information of Dynamically Announce current measurement point and reactor in main interface.
As shown in figure 5, a kind of measurement method of the reactor abnormal sound measuring device includes the following steps,
The front surface of shell makes ultrasound transducer probe and laser range sensor towards electricity to be measured towards reactor to be measured
Anti- device,
Ultrasound transducer probe acquires the ultrasonic signal of reactor sending in real time and is converted to voltage signal, laser ranging sensing
Device acquires reactor distance signal in real time,
In response to the voltage signal and the distance signal, processing unit is synchronous to generate ultrasound intensity data and distance
Data, display unit Dynamically Announce current ultrasonic intensity data and range data.
Industrial applicibility
Reactor abnormal sound measuring device and its method of the present invention can be manufactured and be used in reactor detection field.
The basic principle of the application is described in conjunction with specific embodiments above, however, it is desirable to, it is noted that in this application
The advantages of referring to, advantage, effect etc. are only exemplary rather than limitation, must not believe that these advantages, advantage, effect etc. are the application
Each embodiment is prerequisite.In addition, detail disclosed above is merely to exemplary effect and the work being easy to understand
With, rather than limit, it is that must be realized using above-mentioned concrete details that above-mentioned details, which is not intended to limit the application,.
In order to which purpose of illustration and description has been presented for above description.In addition, this description is not intended to the reality of the application
It applies example and is restricted to form disclosed herein.Although already discussed above multiple exemplary aspects and embodiment, this field skill
Its certain modifications, modification, change, addition and sub-portfolio will be recognized in art personnel.
Claims (10)
1. a kind of reactor abnormal sound measuring device comprising,
Shell comprising front surface and upper surface towards reactor to be measured,
Ultrasound transducer probe, the ultrasound transducer probe for acquiring the ultrasonic signal that reactor issues in real time are located at the front end of the shell
With towards the reactor, the ultrasonic signal of acquisition is converted to voltage signal by the ultrasound transducer probe,
Laser range sensor, the laser range sensor for acquiring reactor distance signal in real time are located at the front end of the shell,
It includes the laser emission element with optical filter and laser pick-off unit with optical filter,
Display unit is arranged in the upper surface,
Processing unit connects the ultrasound transducer probe, laser range sensor and display unit, wherein in response to described
Voltage signal and the distance signal, processing unit is synchronous to be generated ultrasound intensity data and range data and is shown in described aobvious
Show unit.
2. reactor abnormal sound measuring device as described in claim 1, wherein preferred, ultrasound transducer probe includes pretreatment
Signal Pretreatment unit, modulus sampling unit and the centre that ultrasonic signal is converted to voltage signal of the ultrasonic signal of acquisition
Device is managed, the Signal Pretreatment unit includes amplifier.
3. reactor abnormal sound measuring device as described in claim 1, wherein ultrasound transducer probe acquires reactor sending in real time
30kHz~50kHz frequency range ultrasonic signal, the laser range sensor size be less than 20*22*15mm and measurement apart from model
It encloses and is greater than 15 meters.
4. reactor abnormal sound measuring device as described in claim 1, wherein the optical filter receives swashing for preset range wavelength
Light, the display unit are liquid crystal display.
5. reactor abnormal sound measuring device as described in claim 1, wherein the shell is equipped at its both ends for hand-held
Handle.
6. reactor abnormal sound measuring device as described in claim 1, wherein the processing unit includes that sample rate is greater than
100kHz and amplification factor are greater than 100 times of sampling unit and the detection unit of the envelope peak for voltage signal and pass through ratio
Example transformation obtains the computing unit of ultrasonic signal sound intensity degree.
7. reactor abnormal sound measuring device as described in claim 1, wherein simultaneously rows of openings makes the ultrasound to the front surface
Sensing probe and laser range sensor are towards the reactor；Ultrasound transducer probe welds the processing unit, laser ranging
Sensor connects processor by signal wire, and display unit is connected by winding displacement with processing unit.
8. reactor abnormal sound measuring device as described in claim 1, wherein the rear surface of the shell is equipped with for charging
Charging interface.
9. reactor abnormal sound measuring device as described in claim 1, wherein processing unit include digital signal processor, specially
With integrated circuit ASIC or on-site programmable gate array FPGA, processing unit includes one or more read only memory ROMs, random
Access memory RAM, flash memory or Electrical Erasable programmable read only memory EEPROM.
10. the measurement method of reactor abnormal sound measuring device described in a kind of any one of claim 1-9 comprising following step
Suddenly,
The front surface of shell makes ultrasound transducer probe and laser range sensor towards reactor to be measured towards reactor to be measured,
Ultrasound transducer probe acquires the ultrasonic signal of reactor sending in real time and is converted to voltage signal, and laser range sensor is real
When acquire reactor distance signal,
In response to the voltage signal and the distance signal, processing unit is synchronous to generate ultrasound intensity data and apart from number
According to display unit Dynamically Announce current ultrasonic intensity data and range data.
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| CN201910494517.3A CN110160634A (en) | 2019-06-06 | 2019-06-06 | Reactor abnormal sound measuring device and its method |
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| CN201910494517.3A CN110160634A (en) | 2019-06-06 | 2019-06-06 | Reactor abnormal sound measuring device and its method |
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| CN113589110A (en) * | 2021-06-04 | 2021-11-02 | 国网宁夏电力有限公司检修公司 | Ultrasonic signal acquisition device and method |
| CN117451160A (en) * | 2023-10-23 | 2024-01-26 | 国网宁夏电力有限公司中卫供电公司 | Vibration monitoring equipment of reactor for preventing voltage sag |
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Application publication date: 20190823 |