CN107894299A - A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree - Google Patents
A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree Download PDFInfo
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- CN107894299A CN107894299A CN201711048701.2A CN201711048701A CN107894299A CN 107894299 A CN107894299 A CN 107894299A CN 201711048701 A CN201711048701 A CN 201711048701A CN 107894299 A CN107894299 A CN 107894299A
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- vacuum
- ultrasonic wave
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- 238000009659 non-destructive testing Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000000527 sonication Methods 0.000 title claims abstract description 9
- 238000005259 measurement Methods 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000008033 biological extinction Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L21/00—Vacuum gauges
- G01L21/08—Vacuum gauges by measuring variations in the transmission of acoustic waves through the medium, the pressure of which is to be measured
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- General Physics & Mathematics (AREA)
- 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 sonication times difference Non-Destructive Testing vacuum tube vacuum-degree.A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree of the present invention, comprises the following steps：(1) ultrasonic wave transmitting probe is placed on to the top of vacuum tube, ultrasonic wave receiving transducer is placed on the lower section of vacuum tube；(2) when measurement starts, measurement instruction is sent by controller first, impulse generator is sent measurement pulse, ultrasonic wave transmitting probe is sent to after power amplifier amplifies；(3) ultrasonic wave produces decay when by vacuum tube, and its attenuation degree is relevant with the vacuum in vacuum tube；(4) ultrasonic wave receiving transducer amplifies the ultrasonic wave received by power amplifier, the signal level of suitable controller is selected through comparator again, controller calculates the vacuum in vacuum tube according to the time difference for sending pulse and reception pulse, and shows.
Description
Technical field
The invention belongs to electric power Non-Destructive Testing and electric instrument technical field, and in particular to a kind of sonication times are poor
The method of Non-Destructive Testing 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 6.6 × 10-2
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 is bothersome laborious, and measures inaccuracy, often judges by accident.
The content of the invention
Dismounting trouble be present present invention is generally directed to the detection method of existing vacuum tube vacuum-degree, waste time and energy and measure
As a result a kind of the problem of inaccurate, there is provided method of sonication times difference 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 sonication times difference Non-Destructive Testing vacuum tube vacuum-degree, comprises the following steps：
(1) ultrasonic wave transmitting probe is placed on to the top of vacuum tube, ultrasonic wave receiving transducer is placed on the lower section of vacuum tube；
(2) when measurement starts, measurement instruction is sent by controller first, impulse generator is sent measurement pulse, passed through
Ultrasonic wave transmitting probe is sent to after power amplifier amplification；
(3) ultrasonic wave produces decay when by vacuum tube, and its attenuation degree is relevant with the vacuum in vacuum tube, when
When vacuum is good in vacuum tube, ultrasonic wave cannot pass through vacuum layer, and ultrasonic wave receiving transducer can not receive excusing from death ripple；Work as vacuum
Vacuum decay in pipe, ultrasonic wave its spread speed when by vacuum tube change, and passage time is the function of vacuum, very
Reciprocal of duty cycle is lower, and ultrasonic wave elapsed time is longer, otherwise shorter, crosses measurement ultrasonic wave and determines vacuum by the time of vacuum tube
Vacuum in arc-chutes；
(4) ultrasonic wave receiving transducer amplifies the ultrasonic wave received by power amplifier, then selects through comparator suitable
The signal level of hop controller, controller calculate the vacuum in vacuum tube according to the time difference for sending pulse and reception pulse
Degree, and show；
(5) due to the change of environment temperature, make the measurement accuracy of instrument reduce, therefore add environment temperature detection, instrument
According to the height corrected Calculation result of environment temperature.
The ultrasonic wave that the present invention is sent by ultrasonic wave transmitting probe penetrates the ceramic outer wall above vacuum interrupter, because
Ultrasonic wave is mechanical wave, is needed by medium during propagation, and spread speed is relevant with temperature with the medium at place, the present invention by with
Put environment temperature detection and carry out corrected Calculation result, so the spread speed of ultrasonic wave is just only relevant with vacuum height.Surely
When reciprocal of duty cycle declines, illustrate with the presence of gas medium, now ultrasonic wave can just be propagated in vacuum tube, because each in vacuum tube
Vacuum is different, therefore, the time difference of ultrasonic wave is received with regard to different, by measuring this time difference, it is possible to reflection indirectly
Vacuum in vacuum tube.
Embodiment
A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree, comprises the following steps：
(1) ultrasonic wave transmitting probe is placed on to the top of vacuum tube, ultrasonic wave receiving transducer is placed on the lower section of vacuum tube；
(2) when measurement starts, measurement instruction is sent by controller first, impulse generator is sent measurement pulse, passed through
Ultrasonic wave transmitting probe is sent to after power amplifier amplification；
(3) ultrasonic wave produces decay when by vacuum tube, and its attenuation degree is relevant with the vacuum in vacuum tube, when
When vacuum is good in vacuum tube, ultrasonic wave cannot pass through vacuum layer, and ultrasonic wave receiving transducer can not receive excusing from death ripple；Work as vacuum
Vacuum decay in pipe, ultrasonic wave its spread speed when by vacuum tube change, and passage time is the function of vacuum, very
Reciprocal of duty cycle is lower, and ultrasonic wave elapsed time is longer, otherwise shorter, crosses measurement ultrasonic wave and determines vacuum by the time of vacuum tube
Vacuum in arc-chutes；
(4) ultrasonic wave receiving transducer amplifies the ultrasonic wave received by power amplifier, then selects through comparator suitable
The signal level of hop controller, controller calculate the vacuum in vacuum tube according to the time difference for sending pulse and reception pulse
Degree, and show；
(5) due to the change of environment temperature, make the measurement accuracy of instrument reduce, therefore add environment temperature detection, instrument
According to the height corrected Calculation result of environment temperature.
Claims (1)
1. a kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree, comprises the following steps：
(1) ultrasonic wave transmitting probe is placed on to the top of vacuum tube, ultrasonic wave receiving transducer is placed on the lower section of vacuum tube；
(2) when measurement starts, measurement instruction is sent by controller first, impulse generator is sent measurement pulse, through overpower
Ultrasonic wave transmitting probe is sent to after amplifier amplification；
(3) ultrasonic wave produces decay, its attenuation degree is relevant with the vacuum in vacuum tube, works as vacuum when by vacuum tube
When vacuum is good in pipe, ultrasonic wave cannot pass through vacuum layer, and ultrasonic wave receiving transducer can not receive excusing from death ripple；When in vacuum tube
Vacuum decay, ultrasonic wave its spread speed when by vacuum tube change, and passage time is the function of vacuum, vacuum
Lower, ultrasonic wave elapsed time is longer, otherwise shorter, crosses measurement ultrasonic wave and determines vacuum extinction by the time of vacuum tube
Indoor vacuum；
(4) ultrasonic wave receiving transducer amplifies the ultrasonic wave received by power amplifier, then selects suitable control through comparator
The signal level of device processed, controller calculate the vacuum in vacuum tube according to the time difference for sending pulse and reception pulse, and
Show；
(5) due to the change of environment temperature, make the measurement accuracy of instrument reduce, thus add environment temperature detection, instrument according to
The height corrected Calculation result of environment temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048701.2A CN107894299A (en) | 2017-10-31 | 2017-10-31 | A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711048701.2A CN107894299A (en) | 2017-10-31 | 2017-10-31 | A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107894299A true CN107894299A (en) | 2018-04-10 |
Family
ID=61803730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711048701.2A Pending CN107894299A (en) | 2017-10-31 | 2017-10-31 | A kind of method of sonication times difference Non-Destructive Testing vacuum tube vacuum-degree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107894299A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082692A (en) * | 2020-08-05 | 2020-12-15 | 国网浙江省电力有限公司嘉兴供电公司 | Vacuum degree real-time monitoring device for vacuum pumping operation |
| CN114964614A (en) * | 2022-07-28 | 2022-08-30 | 成都睿宝电子科技有限公司 | Ultrasonic vacuum measurement gauge pipe |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19526394A1 (en) * | 1995-07-19 | 1997-01-23 | Siemens Ag | Vacuum detection system for vacuum switch tube |
| CN1298101A (en) * | 2000-12-29 | 2001-06-06 | 武汉大学 | Ultrasonic vacuum degree detection method and detector for vacuum breaker |
| CN104568302A (en) * | 2013-10-12 | 2015-04-29 | 徐建宁 | Ultrasonic vacuum detecting tube |
| CN204346980U (en) * | 2014-12-30 | 2015-05-20 | 江苏久创电气科技有限公司 | A kind of detector for SF6 gas concentration on-line monitoring |
| 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 CN201711048701.2A patent/CN107894299A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19526394A1 (en) * | 1995-07-19 | 1997-01-23 | Siemens Ag | Vacuum detection system for vacuum switch tube |
| CN1298101A (en) * | 2000-12-29 | 2001-06-06 | 武汉大学 | Ultrasonic vacuum degree detection method and detector for vacuum breaker |
| CN104568302A (en) * | 2013-10-12 | 2015-04-29 | 徐建宁 | Ultrasonic vacuum detecting tube |
| CN204346980U (en) * | 2014-12-30 | 2015-05-20 | 江苏久创电气科技有限公司 | A kind of detector for SF6 gas concentration on-line monitoring |
| CN105719900A (en) * | 2016-04-01 | 2016-06-29 | 三峡大学 | Microwave vacuum breaker vacuum degree pre-warning device |
Non-Patent Citations (1)
| Title |
|---|
| 万志平: "《单片机应用技术》", 30 June 2015, 浙江大学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082692A (en) * | 2020-08-05 | 2020-12-15 | 国网浙江省电力有限公司嘉兴供电公司 | Vacuum degree real-time monitoring device for vacuum pumping operation |
| CN114964614A (en) * | 2022-07-28 | 2022-08-30 | 成都睿宝电子科技有限公司 | Ultrasonic vacuum measurement gauge pipe |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180410 |