CN107863267A - A kind of method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum - Google Patents
A kind of method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum Download PDFInfo
- Publication number
- CN107863267A CN107863267A CN201711044087.2A CN201711044087A CN107863267A CN 107863267 A CN107863267 A CN 107863267A CN 201711044087 A CN201711044087 A CN 201711044087A CN 107863267 A CN107863267 A CN 107863267A
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- vacuum
- ultrasonic
- ultrasonic wave
- numerical value
- wave
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 9
- 239000000919 ceramic Substances 0.000 title claims abstract description 5
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 230000003068 static effect Effects 0.000 claims abstract description 4
- 230000008033 biological extinction Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 238000011160 research Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/668—Means for obtaining or monitoring the vacuum
- H01H2033/6686—Means for obtaining or monitoring the vacuum by emitting and receiving reflected sound or ultrasound signals
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention belongs to electric power Non-Destructive Testing and electric instrument technical field, and in particular to a kind of method of ultrasonic method Non-Destructive Testing vacuum tube vacuum-degree.The method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum of the present invention, comprises the following steps：(1) ultrasonic wave emission sensor is arranged on the port of the moving contact side of vacuum interrupter, and ultrasonic wave receives the port that sensor is arranged on the static contact side of vacuum interrupter；(2) measurement instruction is sent by controller, impulse generator is sent measurement pulse；(3) ultrasonic wave emission sensor sends 40KHz ultrasonic pulse, filters out harmonic wave through bandpass filter and becomes pure fundamental wave and enters vacuum interrupter；(4) receive sensor using ultrasonic wave and receive the composite wave after decay；(6) it is 1.0 × 10 in vacuum‑5It is 0 by instrument regulation to show value, that is, 1.0 × 10 during Pa‑5Pa corresponds to numerical value 212I.e. 4096, then the numerical value that instrument is shown is exactly relative to 1.0 × 10‑5Pa deviation ratio.
Description
Technical field
The invention belongs to electric power Non-Destructive Testing and electric instrument technical field, and in particular to a kind of lossless inspection of ultrasonic method
The method for surveying vacuum tube vacuum-degree.
Background technology
The vacuum of vacuum interrupter is the important technology index of power vacuum switch, when vacuum is less than 1.33X10-5
When, it is necessary to vacuum interrupter is changed, otherwise will be caused the accident.The problem of vacuum degree measurement difficulty for a long time be present, it is open
Way be to pull down vacuum interrupter, contact both ends apply voltage, judge house vacuum degree by measuring gas current.This
Kind method wastes time and energy, and measures inaccurate, often erroneous judgement.
The content of the invention
Existing present invention is generally directed to existing vacuum detecting method wastes time and energy, and measures the problem of inaccurate, carries
For a kind of method of laser method Non-Destructive Testing vacuum tube vacuum-degree.
It is of the invention to be for the technical scheme taken that solves the above problems：
A kind of method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum, comprises the following steps：
(1) ultrasonic wave emission sensor is arranged on the port of the moving contact side of vacuum interrupter, and ultrasonic wave receives sensing
Device is arranged on the port of the static contact side of vacuum interrupter；
(2) measurement instruction is sent by controller, impulse generator is sent measurement pulse, in order to penetrate vacuum pipe outer wall,
Power amplifier is added, ultrasonic wave emission sensor is sent to after power amplifier amplifies；
(3) ultrasonic wave emission sensor sends 40KHz ultrasonic pulse, and filtering out harmonic wave through bandpass filter becomes pure base
Ripple enters vacuum interrupter, and its amplitude is A0, the output voltage numerical value that now signal generator is shown is U0；
(4) a certain degree of decay is had by the ultrasonic wave of vacuum interrupter, receiving sensor using ultrasonic wave receives
To the composite wave after decay, then the ultrasonic amplitude received is A1, output voltage numerical value that now signal generator is shown
For U1；
(5) the electric signal U that we will receive1, become digital quantity X through 12 A/D converter linear process, pass through public affairs
Formula：Show value=(1-X/4096) × 100%, calculate instrument and show numerical value；
(6) it is 1.0 × 10 in vacuum through vacuum research institute experimental determination-5During Pa, it is to show value by instrument regulation
0, that is, 1.0 × 10-5Pa corresponds to numerical value 212I.e. 4096, then the numerical value that instrument is shown is exactly relative to 1.0 × 10-5Pa
Deviation ratio, i.e. show value is lower, illustrates that vacuum is better, and show value is higher, illustrates that vacuum is poorer；
(7) because supersonic generator and ultrasonic receiver are made up of same material, have：U1/U0=A1/A0,
Simultaneously because signal U1Numerical value X is changed into by A/D converter linear process, obtained by computing (1-X/4096) × 100%
Go out relative to 1.0 × 10-5Pa deviation ratio, it can be seen that, vacuum in vacuum extinction room and the deviation ratio finally calculated
With linear relationship, so as to draw the vacuum values in vacuum extinction room by deviation ratio.
The present invention uses above-mentioned technical proposal, the decay propagated in a vacuum using ultrasonic wave and the relation of vacuum, makes
The measurement for obtaining vacuum is converted into measurement of the ultrasonic wave after vacuum interrupter is decayed.
Embodiment
Embodiment 1
(1) ultrasonic wave emission sensor is arranged on the port of the moving contact side of vacuum interrupter, and ultrasonic wave receives sensing
Device is arranged on the port of the static contact side of vacuum interrupter；
(2) measurement instruction is sent by controller, impulse generator is sent measurement pulse, in order to penetrate vacuum pipe outer wall,
Power amplifier is added, ultrasonic wave emission sensor is sent to after power amplifier amplifies；
(3) ultrasonic wave emission sensor sends 40KHz ultrasonic pulse, and filtering out harmonic wave through bandpass filter becomes pure base
Ripple enters vacuum interrupter, and its amplitude is A0, the output voltage numerical value that now signal generator is shown is U0；
(4) a certain degree of decay is had by the ultrasonic wave of vacuum interrupter, receiving sensor using ultrasonic wave receives
To the composite wave after decay, then the ultrasonic amplitude received is A1, output voltage numerical value that now signal generator is shown
For U1；
(5) the electric signal U that we will receive1, become digital quantity X through 12 A/D converter processing, pass through formula：It is aobvious
Indicating value=(1-X/4096) × 100%, calculate instrument and show numerical value；
(6) it is 1.0 × 10 in vacuum through vacuum research institute experimental determination-5During Pa, it is to show value by instrument regulation
0, that is, 1.0 × 10-5Pa corresponds to numerical value 212I.e. 4096, then the numerical value that instrument is shown is exactly relative to 1.0 × 10-5Pa
Deviation ratio, i.e. show value is lower, illustrates that vacuum is better, and show value is higher, illustrates that vacuum is poorer；
(7) because supersonic generator and ultrasonic receiver are made up of same material, have：U1/U0=A1/A0,
Simultaneously because signal U1Numerical value X is changed into by A/D converter linear process, obtained by computing (1-X/4096) × 100%
Go out relative to 1.0 × 10-5Pa deviation ratio, it can be seen that, vacuum in vacuum extinction room and the deviation ratio finally calculated
With linear relationship, so as to draw the vacuum values in vacuum extinction room by deviation ratio.
Claims (1)
- A kind of 1. method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum, it is characterized in that comprising the following steps：(1) ultrasonic wave emission sensor is arranged on the port of the moving contact side of vacuum interrupter, and ultrasonic wave receives sensor peace Mounted in the port of the static contact side of vacuum interrupter；(2) measurement instruction is sent by controller, impulse generator is sent measurement pulse, in order to penetrate vacuum pipe outer wall, increase Power amplifier, is sent to ultrasonic wave emission sensor after power amplifier amplifies；(3) ultrasonic wave emission sensor sends 40KHz ultrasonic pulse, filters out harmonic wave through bandpass filter and becomes pure fundamental wave and Enter to vacuum interrupter, its amplitude is A0, the output voltage numerical value that now signal generator is shown is U0；(4) have a certain degree of decay by the ultrasonic wave of vacuum interrupter, using ultrasonic wave receive sensor receive through Composite wave after decay, the then ultrasonic amplitude received are A1, the output voltage numerical value that now signal generator is shown is U1；(5) the electric signal U that we will receive1, become digital quantity X through 12 A/D converter linear process, pass through formula：Display Value=(1-X/4096) × 100%, calculate instrument and show numerical value；(6) it is 1.0 × 10 in vacuum through vacuum research institute experimental determination-5It is 0 by instrument regulation to show value, i.e., during Pa Equivalent to 1.0 × 10-5Pa corresponds to numerical value 212I.e. 4096, then the numerical value that instrument is shown is exactly relative to 1.0 × 10-5Pa's is inclined Rate, i.e. show value are lower, illustrate that vacuum is better, and show value is higher, illustrates that vacuum is poorer；(7) because supersonic generator and ultrasonic receiver are made up of same material, have：U1/U0=A1/A0, simultaneously Due to signal U1Numerical value X is changed into by A/D converter linear process, phase is drawn by computing (1-X/4096) × 100% For 1.0 × 10-5Pa deviation ratio, it can be seen that, vacuum in vacuum extinction room and the deviation ratio finally calculated have Linear relationship, so as to draw the vacuum values in vacuum extinction room by deviation ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044087.2A CN107863267A (en) | 2017-10-31 | 2017-10-31 | A kind of method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711044087.2A CN107863267A (en) | 2017-10-31 | 2017-10-31 | A kind of method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107863267A true CN107863267A (en) | 2018-03-30 |
Family
ID=61698042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711044087.2A Pending CN107863267A (en) | 2017-10-31 | 2017-10-31 | A kind of method of ultrasonic method Non-Destructive Testing ceramic vacuum arc-chutes vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107863267A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04192234A (en) * | 1990-11-27 | 1992-07-10 | Toshiba Corp | Vacuum breaker |
| DE19526394A1 (en) * | 1995-07-19 | 1997-01-23 | Siemens Ag | Vacuum detection system for vacuum switch tube |
| CN102324337A (en) * | 2011-08-05 | 2012-01-18 | 安徽鑫龙电器股份有限公司 | Circuit breaker with vacuum degree online monitoring function and monitoring method for circuit breaker |
| CN102683102A (en) * | 2012-05-23 | 2012-09-19 | 桂林电子科技大学 | Vacuum degree on-line detection method and device for breaker and potential information capturing sensor |
| CN104037008A (en) * | 2014-04-22 | 2014-09-10 | 江苏南瑞泰事达电气有限公司 | Power vacuum switch with on-line vacuum degree monitoring function based on wireless vacuum sensors, and monitoring method of power vacuum switch |
| CN104374518A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Device and method for measuring vacuum degree inside vacuum thermal insulation panel |
| CN105719900A (en) * | 2016-04-01 | 2016-06-29 | 三峡大学 | Microwave vacuum breaker vacuum degree pre-warning device |
-
2017
- 2017-10-31 CN CN201711044087.2A patent/CN107863267A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04192234A (en) * | 1990-11-27 | 1992-07-10 | Toshiba Corp | Vacuum breaker |
| DE19526394A1 (en) * | 1995-07-19 | 1997-01-23 | Siemens Ag | Vacuum detection system for vacuum switch tube |
| CN102324337A (en) * | 2011-08-05 | 2012-01-18 | 安徽鑫龙电器股份有限公司 | Circuit breaker with vacuum degree online monitoring function and monitoring method for circuit breaker |
| CN102683102A (en) * | 2012-05-23 | 2012-09-19 | 桂林电子科技大学 | Vacuum degree on-line detection method and device for breaker and potential information capturing sensor |
| CN104374518A (en) * | 2013-08-12 | 2015-02-25 | 苏州维艾普新材料股份有限公司 | Device and method for measuring vacuum degree inside vacuum thermal insulation panel |
| CN104037008A (en) * | 2014-04-22 | 2014-09-10 | 江苏南瑞泰事达电气有限公司 | Power vacuum switch with on-line vacuum degree monitoring function based on wireless vacuum sensors, and monitoring method of power vacuum switch |
| CN105719900A (en) * | 2016-04-01 | 2016-06-29 | 三峡大学 | Microwave vacuum breaker vacuum degree pre-warning device |
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Application publication date: 20180330 |
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