CN111637046A - On-line nondestructive detection method for breakage of diaphragm of pneumatic diaphragm pump - Google Patents
On-line nondestructive detection method for breakage of diaphragm of pneumatic diaphragm pump Download PDFInfo
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- CN111637046A CN111637046A CN202010451587.3A CN202010451587A CN111637046A CN 111637046 A CN111637046 A CN 111637046A CN 202010451587 A CN202010451587 A CN 202010451587A CN 111637046 A CN111637046 A CN 111637046A
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- Prior art keywords
- ultrasonic
- diaphragm pump
- ultrasonic wave
- pneumatic diaphragm
- output pipeline
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B43/00—Machines, pumps, or pumping installations having flexible working members
- F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
- F04B43/06—Pumps having fluid drive
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The invention relates to the field of detection, and particularly discloses an online nondestructive detection method for pneumatic diaphragm pump diaphragm damage, which comprises the following steps: the method comprises the following steps: starting the pneumatic diaphragm pump; step two: transmitting an ultrasonic wave beam by an ultrasonic transmitter at one side of an output pipeline of the pneumatic diaphragm pump; step three: receiving an ultrasonic wave beam through an ultrasonic wave receiver, and detecting the intensity or the penetration time of the ultrasonic wave; step four: the detected intensity or penetration time is compared to a set value. The method is based on the characteristic that the output pipeline has a large amount of bubbles after the diaphragm of the pneumatic diaphragm pump is damaged, realizes the nondestructive online detection of the performance of the diaphragm of the pneumatic diaphragm pump based on the principle that the attenuation degree of ultrasonic waves in air is far greater than that of liquid, does not stop the machine, does not disassemble the pump and damage the pipe, is easy to be attached to the existing pumping system, and has the characteristics of simple structure, stability, reliability and high sensitivity.
Description
Technical Field
The invention relates to the field of detection, in particular to an online nondestructive detection method for breakage of a pneumatic diaphragm pump diaphragm.
Background
Various liquid medicines are generally used in the manufacturing process of the printed circuit board, and a large number of pneumatic diaphragm pumps are used in the scenes of storage, transfer and addition of the liquid medicines. The pneumatic diaphragm pump is usually made of plastic, has strong corrosion resistance, has the advantages of large output pressure, no need of a power supply, simple control, convenient maintenance, self-absorption capability and the like, and is difficult to replace by other pumps.
The core component of an air operated diaphragm pump is the diaphragm. When the membrane is aged and damaged, air leakage begins, the flow rate and the pressure are reduced although the liquid medicine can be pumped, and air bubbles in the pipeline are increased sharply, and the effective components or the performance of the liquid medicine can be influenced by the air bubbles. The working state of the air pump almost depends on the aging degree of the diaphragm, if the deterioration of the state of the diaphragm can be detected in time, the aged diaphragm is replaced in time, the effect of preventive maintenance in advance is achieved, the fault shutdown can be greatly reduced, and the reliability of a pumping system is further improved.
Disclosure of Invention
The invention aims to provide an on-line nondestructive testing method for the breakage of a pneumatic diaphragm pump diaphragm, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an on-line nondestructive detection method for breakage of a diaphragm of a pneumatic diaphragm pump comprises the following steps:
the method comprises the following steps: starting the pneumatic diaphragm pump;
step two: transmitting an ultrasonic wave beam by an ultrasonic transmitter at one side of an output pipeline of the pneumatic diaphragm pump;
step three: receiving an ultrasonic wave beam through an ultrasonic wave receiver, and detecting the intensity or the penetration time of the ultrasonic wave;
step four: the detected intensity or penetration time is compared to a set value.
Further: the ultrasonic transmitter and the ultrasonic receiver are positioned on two sides of the output pipeline.
Further: the ultrasonic wave beam transmitted by the ultrasonic transmitter is an ultrasonic wave penetrating beam vertical to the output pipeline, the ultrasonic transmitter transmits the ultrasonic wave penetrating beam on one side of the output pipeline of the pneumatic diaphragm pump, the ultrasonic receiver is used for detecting the intensity or the penetrating time of the ultrasonic wave on the opposite side of the output pipeline of the pneumatic diaphragm pump, the detected intensity or the penetrating time is compared with a set value, and then whether the diaphragm leaks air is judged nondestructively and online.
Further: the ultrasonic wave beam transmitted by the ultrasonic transmitter is an ultrasonic wave penetrating beam inclined with the output pipeline, the ultrasonic wave penetrating beam transmitted by the ultrasonic transmitter can reach the ultrasonic receiver, the central direction of the ultrasonic wave penetrating beam is inclined with the direction of the output pipeline and forms a certain included angle with the ultrasonic wave penetrating beam, and the included angle is 90 degrees +/-89 degrees and is not parallel to the flow direction of the pipeline.
Further: the ultrasonic transmitter and the ultrasonic receiver are positioned on the same side of the output pipeline, the ultrasonic wave beam transmitted by the ultrasonic transmitter is an ultrasonic penetrating beam inclined to the output pipeline, and the ultrasonic receiver receives an ultrasonic reflected beam reflected by the output pipeline; the ultrasonic wave transmitted by the ultrasonic transmitter forms an ultrasonic wave reflected beam after being reflected, and finally reaches the ultrasonic receiver, the central directions of the ultrasonic wave transmitted beam and the ultrasonic wave reflected beam are inclined with the direction of the output pipeline and form a certain included angle with the output pipeline, and the included angle is 90 degrees +/-89 degrees and is not parallel to the flow direction of the pipeline.
Further: the ultrasonic wave beam emitted by the ultrasonic transmitter is modulated by one or more modes of sweep frequency, pulse, amplitude variation and constancy.
Further: the ultrasonic transmitter and the ultrasonic receiver are started synchronously during working, and the penetration time of the ultrasonic waves in the output pipeline is calculated.
Compared with the prior art, the invention has the beneficial effects that: the method is based on the characteristic that the output pipeline has a large amount of bubbles after the diaphragm of the pneumatic diaphragm pump is damaged, realizes the nondestructive online detection of the performance of the diaphragm of the pneumatic diaphragm pump based on the principle that the attenuation degree of ultrasonic waves in air is far greater than that of liquid, does not stop the machine, does not disassemble the pump and damage the pipe, is easy to be attached to the existing pumping system, and has the characteristics of simple structure, stability, reliability and high sensitivity.
Drawings
FIG. 1 is a schematic structural diagram of an on-line nondestructive detection method for breakage of a diaphragm of a pneumatic diaphragm pump;
FIG. 2 is a schematic structural view of embodiment 1;
FIG. 3 is a schematic structural view of example 2;
FIG. 4 is a schematic structural view of embodiment 3;
in the figure: 1-pneumatic diaphragm pump, 2-output pipeline, 3-ultrasonic transmitter, 4-ultrasonic penetrating beam, 5-ultrasonic receiver and 6-ultrasonic reflecting beam.
Detailed Description
Example 1
Referring to fig. 1 and fig. 2, in an embodiment of the present invention, an online nondestructive detection method for detecting a breakage of a diaphragm of a pneumatic diaphragm pump includes the following steps:
the method comprises the following steps: starting the pneumatic diaphragm pump 1;
step two: transmitting an ultrasonic penetrating beam 4 perpendicular to the output pipe 2 at one side of the output pipe 2 of the pneumatic diaphragm pump 1 by an ultrasonic transmitter 3;
step three: receiving an ultrasonic penetrating beam 4 through an ultrasonic receiver 5 at the opposite side of an output pipeline 2 of the pneumatic diaphragm pump 1, and detecting the intensity or the penetrating time of the ultrasonic;
step four: the detected intensity or penetration time is compared to a set value.
The ultrasonic transmitter 3 and the ultrasonic receiver 5 are installed on two opposite sides of the output pipeline 2, an ultrasonic penetrating beam 4 emitted by the ultrasonic transmitter 3 can reach the ultrasonic receiver 5, and the center direction of the ultrasonic penetrating beam 4 is perpendicular to the direction of the output pipeline 2.
During the use, at first start pneumatic diaphragm pump 1, then let ultrasonic emitter 3 at one side transmission ultrasonic wave penetrating beam 4 of pneumatic diaphragm pump 1's output pipeline 2, use ultrasonic receiver 5 to detect ultrasonic wave intensity or penetration time at pneumatic diaphragm pump 1's output pipeline 2's contralateral, compare intensity or penetration time that detect with the setting value, and then whether harmless, online judgement is leaked gas to the diaphragm.
In the detection process, the ultrasonic wave beam emitted by the ultrasonic transmitter 3 is modulated by one or more modes of frequency sweep, pulse, amplitude variation and constancy; the ultrasonic wave transmitter 3 sends out an ultrasonic wave beam, and the intensity of the ultrasonic wave is detected by the ultrasonic wave receiver 5; the ultrasonic transmitter 3 and the ultrasonic receiver 5 are started synchronously in work, and the penetration time of the ultrasonic waves in the output pipeline 2 is calculated.
Example 2
Referring to fig. 1 and fig. 3, in an embodiment of the present invention, an online nondestructive detection method for detecting a breakage of a diaphragm of a pneumatic diaphragm pump includes the following steps:
the method comprises the following steps: starting the pneumatic diaphragm pump 1;
step two: emitting an ultrasonic penetrating beam 4 inclined to the output pipe 2 by an ultrasonic emitter 3 at one side of the output pipe 2 of the pneumatic diaphragm pump 1;
step three: receiving an ultrasonic penetrating beam 4 through an ultrasonic receiver 5 at the opposite side of an output pipeline 2 of the pneumatic diaphragm pump 1, and detecting the intensity or the penetrating time of the ultrasonic;
step four: the detected intensity or penetration time is compared to a set value.
Wherein, ultrasonic transmitter 3 and ultrasonic receiver 5 are installed in the relative both sides of output pipeline 2, and the ultrasonic wave that ultrasonic transmitter 3 sent pierces through beam 4 and can reach ultrasonic receiver 5, and the central direction that this ultrasonic wave pierces through beam 4 inclines with output pipeline 2's direction, and rather than forming certain contained angle, and its contained angle is 90 ° +/-89 °, and is not parallel with the pipeline flow direction.
In the detection process, the ultrasonic wave beam emitted by the ultrasonic transmitter 3 is modulated by one or more modes of frequency sweep, pulse, amplitude variation and constancy; the ultrasonic wave transmitter 3 sends out an ultrasonic wave beam, and the intensity of the ultrasonic wave is detected by the ultrasonic wave receiver 5; the ultrasonic transmitter 3 and the ultrasonic receiver 5 are started synchronously in work, and the penetration time of the ultrasonic waves in the output pipeline 2 is calculated.
Example 3
Referring to fig. 1 and 4, in an embodiment of the present invention, an online nondestructive testing method for detecting a breakage of a diaphragm of a pneumatic diaphragm pump includes the following steps:
the method comprises the following steps: starting the pneumatic diaphragm pump 1;
step two: emitting an ultrasonic penetrating beam 4 inclined to the output pipe 2 by an ultrasonic emitter 3 at one side of the output pipe 2 of the pneumatic diaphragm pump 1;
step three: receiving an ultrasonic reflection beam 6 through an ultrasonic receiver 5 at the same side of an output pipeline 2 of the pneumatic diaphragm pump 1, and detecting the intensity or the penetration time of the ultrasonic reflection beam 6;
step four: the detected intensity or penetration time is compared to a set value.
Wherein, ultrasonic transmitter 3 and ultrasonic receiver 5 are installed in same one side of output pipeline 2, and the ultrasonic wave that ultrasonic transmitter 3 sent pierces through beam 4, forms ultrasonic reflection beam 6 after reflecting, finally can reach ultrasonic receiver 5, and the central direction that this ultrasonic wave pierces through beam 4 and ultrasonic reflection beam 6 inclines with output pipeline 2's direction, and it becomes certain contained angle with it, and its contained angle is 90 ° ± 89 °, and does not flow to parallel with the pipeline.
In the detection process, the ultrasonic wave beam emitted by the ultrasonic transmitter 3 is modulated by one or more modes of frequency sweep, pulse, amplitude variation and constancy; the ultrasonic wave transmitter 3 sends out an ultrasonic wave beam, and the intensity of the ultrasonic wave is detected by the ultrasonic wave receiver 5; the ultrasonic transmitter 3 and the ultrasonic receiver 5 are started synchronously in work, and the penetration time of the ultrasonic waves in the output pipeline 2 is calculated.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. An on-line nondestructive detection method for breakage of a diaphragm of a pneumatic diaphragm pump comprises the following steps:
the method comprises the following steps: starting the pneumatic diaphragm pump;
step two: transmitting an ultrasonic wave beam by an ultrasonic transmitter at one side of an output pipeline of the pneumatic diaphragm pump;
step three: receiving an ultrasonic wave beam through an ultrasonic wave receiver, and detecting the intensity or the penetration time of the ultrasonic wave;
step four: the detected intensity or penetration time is compared to a set value.
2. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 1, characterized in that: the ultrasonic transmitter and the ultrasonic receiver are positioned on two sides of the output pipeline.
3. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 2, characterized in that: the ultrasonic wave beam emitted by the ultrasonic wave emitter is an ultrasonic penetrating beam vertical to the output pipeline.
4. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 2, characterized in that: the ultrasonic wave beam emitted by the ultrasonic wave emitter is an ultrasonic penetrating beam inclined with the output pipeline.
5. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 1, characterized in that: the ultrasonic transmitter and the ultrasonic receiver are positioned on the same side of the output pipeline, the ultrasonic wave beam transmitted by the ultrasonic transmitter is an ultrasonic penetrating beam inclined to the output pipeline, and the ultrasonic receiver receives an ultrasonic reflected beam reflected by the output pipeline.
6. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 4 or 5, characterized in that: the inclination angle between the central direction of the ultrasonic penetrating beam and the output pipeline is 90 +/-89 degrees.
7. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 1, characterized in that: the ultrasonic wave beam emitted by the ultrasonic transmitter is modulated by one or more modes of sweep frequency, pulse, amplitude variation and constancy.
8. The method for the on-line nondestructive detection of the breakage of the diaphragm of the pneumatic diaphragm pump according to claim 1, characterized in that: the ultrasonic transmitter and the ultrasonic receiver are started synchronously during working, and the penetration time of the ultrasonic waves in the output pipeline is calculated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010451587.3A CN111637046A (en) | 2020-05-25 | 2020-05-25 | On-line nondestructive detection method for breakage of diaphragm of pneumatic diaphragm pump |
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| CN202010451587.3A CN111637046A (en) | 2020-05-25 | 2020-05-25 | On-line nondestructive detection method for breakage of diaphragm of pneumatic diaphragm pump |
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| CN202010451587.3A Pending CN111637046A (en) | 2020-05-25 | 2020-05-25 | On-line nondestructive detection method for breakage of diaphragm of pneumatic diaphragm pump |
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| JP2002236111A (en) * | 2001-02-09 | 2002-08-23 | Masahiro Nishikawa | Bubble detecting method and device for liquid pump |
| JP2003165487A (en) * | 2001-11-30 | 2003-06-10 | Sumitomo Heavy Ind Ltd | Method of testing performance of cargo pump for tanker |
| CN1898488A (en) * | 2003-12-02 | 2007-01-17 | 万纳工程公司 | Pump diaphragm rupture detection |
| JP2007155458A (en) * | 2005-12-02 | 2007-06-21 | Hitachi Ltd | Filtration film breakage detector, film filtration device, and filtration film breakage detection method |
| CN104533777A (en) * | 2014-12-30 | 2015-04-22 | 米顿罗工业设备（上海）有限公司 | Metallic diaphragm breakage detection structure |
| CN105222833A (en) * | 2015-10-26 | 2016-01-06 | 上海理工大学 | The measuring method of Air Bubble Size, number and movement velocity in biphase gas and liquid flow |
| WO2016025303A1 (en) * | 2014-08-12 | 2016-02-18 | Covidien Lp | Peristaltic pump with flow control system having downstream ultrasound occlusion and air bubble sensor |
| CN205679366U (en) * | 2016-06-15 | 2016-11-09 | 上海越驰贸易有限公司 | A kind of pneumatic diaphragm pump diaphragm breakage detection device |
| CN108661891A (en) * | 2018-05-09 | 2018-10-16 | 浙江工业大学 | A kind of low cost metering diaphragm pump diaphragm breakage leakage detection method |
| JP6503131B1 (en) * | 2018-12-12 | 2019-04-17 | 株式会社クボタ | Film defect inspection method and film defect inspection apparatus |
| CN210461006U (en) * | 2019-09-20 | 2020-05-05 | 无锡沈辉科技有限公司 | Pneumatic diaphragm pump for liquid conveying |
-
2020
- 2020-05-25 CN CN202010451587.3A patent/CN111637046A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0732501A1 (en) * | 1995-03-16 | 1996-09-18 | W.L. GORE & ASSOCIATES, INC. | A pre-failure sensing diagram |
| JP2002236111A (en) * | 2001-02-09 | 2002-08-23 | Masahiro Nishikawa | Bubble detecting method and device for liquid pump |
| JP2003165487A (en) * | 2001-11-30 | 2003-06-10 | Sumitomo Heavy Ind Ltd | Method of testing performance of cargo pump for tanker |
| CN1898488A (en) * | 2003-12-02 | 2007-01-17 | 万纳工程公司 | Pump diaphragm rupture detection |
| JP2007155458A (en) * | 2005-12-02 | 2007-06-21 | Hitachi Ltd | Filtration film breakage detector, film filtration device, and filtration film breakage detection method |
| WO2016025303A1 (en) * | 2014-08-12 | 2016-02-18 | Covidien Lp | Peristaltic pump with flow control system having downstream ultrasound occlusion and air bubble sensor |
| CN104533777A (en) * | 2014-12-30 | 2015-04-22 | 米顿罗工业设备（上海）有限公司 | Metallic diaphragm breakage detection structure |
| CN105222833A (en) * | 2015-10-26 | 2016-01-06 | 上海理工大学 | The measuring method of Air Bubble Size, number and movement velocity in biphase gas and liquid flow |
| CN205679366U (en) * | 2016-06-15 | 2016-11-09 | 上海越驰贸易有限公司 | A kind of pneumatic diaphragm pump diaphragm breakage detection device |
| CN108661891A (en) * | 2018-05-09 | 2018-10-16 | 浙江工业大学 | A kind of low cost metering diaphragm pump diaphragm breakage leakage detection method |
| JP6503131B1 (en) * | 2018-12-12 | 2019-04-17 | 株式会社クボタ | Film defect inspection method and film defect inspection apparatus |
| CN210461006U (en) * | 2019-09-20 | 2020-05-05 | 无锡沈辉科技有限公司 | Pneumatic diaphragm pump for liquid conveying |
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Application publication date: 20200908 |