CN1427248A - Sound wave sensor - Google Patents
Sound wave sensor Download PDFInfo
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- CN1427248A CN1427248A CN 01144399 CN01144399A CN1427248A CN 1427248 A CN1427248 A CN 1427248A CN 01144399 CN01144399 CN 01144399 CN 01144399 A CN01144399 A CN 01144399A CN 1427248 A CN1427248 A CN 1427248A
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Abstract
A sound wave sensor is composed of casing, base fixed to casing, sensing element fixed to the base, plate electrode fixed to the sensing element, another sensing element fixed to plate electrode, mass block fixed to another sensing element, electrode fixed to the mass block, and preamplifier connected to plate electrode. Said sensing elements are made of piezoelectric material. It can be used for anti-theft alarm purpose of oil (or gas) delivering pipeline or detecting its leakge.
Description
Technical field
The present invention relates to the sonic sensor of the measurement of a kind of sound wave of fields of measurement or infrasonic wave.
Background technology
On the oil transportation of each elephant of China, gas transmission line stolen, to steal the gas crime serious, annual all have a large amount of oil, gas stolen, the oil plant that leaks outside after pipeline is destroyed is unfeelingly swallowing up large stretch of farmland, has caused national wealth massive losses and severe environmental pollution, and the explosive fire accident accident constantly takes place.Though there is conservation regulation in country to oil transportation, tracheae line; specialized agency has been set up in each oil field, and tissue protects line team, and the equipment such as traffic, communication that is equipped with protects line incessantly and take precautions against every day; but owing to oil transportation, the residing region of tracheae line complexity, people's air defense and conventional detection means are difficult to play effect.
So far be used to measure the leakage of long distance oil pipeline, antitheft detection technique is used to such an extent that the most general method is the pressure flow detection method, by the detection to pipe laying pressure at two ends, flow, through the accumulation of convection current amount after a while, differentiates whether leakage is arranged.This kind method only flow loss greater than 30 liters/minute situation under, just can reflect.And crime does not have effect at all for guard against theft oil.Leakage to gas transmission line simultaneously can not detect.
The ADEMCO company of the U.S. produces flush type sensing net cable detection system, it is by being sleeved on the outer wire netting of oil transportation steel pipe as sensor, constant signal in addition, when steel pipe rupture and leakage or artificial destruction sensing net cable, constant signal changes, output alarm signal, the installation of this kind equipment, maintenance workload is big, and the sensing net cable recovery technique difficulty after destroyed is big, the cost height of equipment.
Above-mentioned monitoring device, though user's monitoring leakage problem can be provided, sensitivity is not high, also finds also to have some shortcomings in its structure when reality is used, and fails to reach best result of use.This shows that above-mentioned existing pressure flow detection method still has many defectives, and the assistant officer waits to be improved.
Because the defective that above-mentioned existing pressure flow detection method exists, the design people is actively studied innovation, through constantly studying, designing based on abundant practical experience and professional knowledge, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the inventionTechnical problem underlying to be solved by this invention is, overcomes the defective that existing pressure flow detection method exists, and a kind of sonic sensor of new structure is provided, and makes its input that is used for anti-theft prewarning system, can play the effect of anti-theft early-warning.Can also be used for simultaneously leakage and far field acoustic signal detection to pipeline.
The present invention solves its technical problem underlying and realizes by the following technical solutions.A kind of sonic sensor according to the present invention's proposition, it mainly comprises, casing, base, sensor, battery lead plate, sensor, mass, electrode, prime amplifier, wherein: casing and base are affixed, and sensor is fixed on the base, and battery lead plate is fixed on the sensor, affixed sensor on the battery lead plate, affixed mass on the sensor is equipped with electrode on mass, battery lead plate is connected with prime amplifier.
The present invention solves its technical matters and can also adopt following technical measures further to realize.
Aforesaid sonic sensor, the connected mode of wherein said sensor, battery lead plate, sensor, mass bonds together mutually, is fixed with screw then.
Aforesaid sonic sensor, the sensor that wherein said sensor is made by piezoelectric.
Aforesaid sonic sensor, wherein said prime amplifier is installed in the outside of casing, is connected with the cable of drawing in the casing.
Aforesaid sonic sensor, wherein said prime amplifier is installed in the casing, is connected with battery lead plate, and the other end of prime amplifier is connected with cable in the casing.
Aforesaid sonic sensor, wherein said electrode is fixed on the mass with screw, and casing is provided with the hole, and cable passes from this hole.
Aforesaid sonic sensor, wherein said mass are that metal material is made, and base also is that metal material is made.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, sonic sensor of the present invention is that the mutual collision between object is sounded, and forms sound wave, sound wave not only can be propagated in air, and can in liquid and solid, propagate, when sound wave was propagated in steel pipe, its velocity of propagation was up to more than the per second 5000m.When on oil transportation, gas steel pipe, removing protective seam artificially, weld valve, in the commit a crime courses such as punching, the sonic sensor that the sound wave of generation is installed on the outer wall of steel pipe receives, and by sound-electricity conversion, electric signal output is realized the anti-theft early-warning function.Can also be used for simultaneously leakage and far field acoustic signal detection to pipeline.
In sum, sonic sensor of the present invention, it is in limited field, technical development space, no matter structurally or bigger improvement all arranged on the function, and have large improvement technically, and produced handy and practical effect, and have the effect of enhancement really, thereby being suitable for practicality more, really is a new and innovative, progressive, practical new design.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Description of drawings
Fig. 1 is the structural representation of first embodiment of sonic sensor of the present invention.
Fig. 2 is the structural representation of second embodiment of sonic sensor of the present invention.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to the sonic sensor that foundation the present invention proposes, its embodiment, structure, feature and effect thereof, describe in detail as after.
As everyone knows, the mutual collision between object can produce vibration, sounds, and forms sound wave, and sound wave not only can be propagated in air, and can propagate in liquid and solid, and when sound wave was propagated in steel pipe, its velocity of propagation was up to more than the per second 5000m.When on oil transportation, gas steel pipe, removing protective seam artificially, weld valve, in the commit a crime courses such as punching, the sonic sensor that the sound wave of generation is installed on the outer wall of steel pipe receives, and by sound-electricity conversion, electric signal output is realized the anti-theft early-warning function.
See also shown in Figure 1, first embodiment of sonic sensor of the present invention, it mainly comprises, casing 1, base 2, sensor 3, battery lead plate 4, sensor 5, mass 6, electrode 7, prime amplifier 8, wherein:
Casing 1 is affixed with base 2, and sensor 3 is fixed on the base 2, and battery lead plate 4 is fixed on the sensor 3, affixed sensor 5 on the battery lead plate 4, and affixed mass 6 on the sensor 5, mass 6 is made for metal material, and base 2 is also made for metal material.Electrode 7 is installed on mass 6, these electrode 7 usefulness screws 72 are fixed on the mass 6, and casing 1 is provided with hole 11, and a cable 41 is installed on the battery lead plate 4, another cable 71 is installed on the electrode 7, and the hole 11 that cable 41,71 is provided with by casing 1 passes with prime amplifier 8 and is connected.Sensor of the present invention 3,5 is a kind of sensor of being made by piezoelectric of acoustic-electric conversion.
The connected mode of the sensor 3 of present embodiment, battery lead plate 4, sensor 5, mass 6 be bond together mutually and fixed with screw.
See also shown in Figure 2, second embodiment for sonic sensor of the present invention, it mainly comprises, casing 1 ', base 2 ', sensor 3 ', battery lead plate 4 ', sensor 5 ', mass 6 ', electrode 7 ', prime amplifier 8 ', sealing shroud 9 ', wherein:
Casing 1 ' with base 2 ' affixed, prime amplifier 8 ' be fixed in base 2 ' on, sensor 3 ' be fixed in base 2 ' on, battery lead plate 4 ' be fixed in sensor 3 ' on, battery lead plate 4 ' last affixed sensor 5 ', battery lead plate 4 ' by lead and prime amplifier 8 ' be connected, sensor 5 ' last affixed mass 6 ', mass 6 ' on be equipped with electrode 7 ', this electrode 7 ' with screw 72 ' be fixed in mass 6 ' on, casing 1 ' be provided with hole 11 ', battery lead plate 4 ' on be equipped with a cable 41 ', prime amplifier 8 ' on be equipped with another cable 81 ', cable 41 ', 81 ' hole 11 by casing 1 ' be provided with ' pass output current signal.Casing 1 ' peripheral closely coat be provided with sealing shroud 9 ', base 2 ' the bottom surface be provided with threaded hole 21 ', can be connected with steel pipe or other foreign object.
The sensor 3 of present embodiment ', battery lead plate 4 ', sensor 5 ', mass 6 ' connected mode bond together mutually, and fixed with screw.
The 3rd embodiment of sonic sensor of the present invention, it is to be provided with hole in the bottom surface of base 2, and the place is equiped with magnet steel at hole, and this magnet steel can interconnect with steel pipe or other foreign object.Other structure is identical so do not repeat them here with embodiment one or embodiment two.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (7)
1, a kind of sonic sensor is characterized in that it mainly comprises, casing (1), base (2), sensor (3), battery lead plate (4), sensor (5), mass (6), electrode (7), prime amplifier (8), wherein:
Casing (1) is affixed with base (2), sensor (3) is fixed on the base (2), battery lead plate (4) is fixed on the sensor (3), battery lead plate (4) is gone up affixed sensor (5), sensor (5) is gone up affixed mass (6), electrode (7) is installed on mass (6), and battery lead plate (4) is connected with prime amplifier (8).
2, sonic sensor according to claim 1 is characterized in that the connected mode of described sensor (3), battery lead plate (4), sensor (5), mass (6) bonds together mutually, is fixed with screw then.
3, sonic sensor according to claim 1 is characterized in that the sensor that described sensor (3), (5) are made by piezoelectric.
4, sonic sensor according to claim 1 is characterized in that described prime amplifier (8) is installed in the outside of casing (1), is connected with the cable of drawing in the casing (41), (71).
5, sonic sensor according to claim 1 is characterized in that described prime amplifier (8 ') is installed in the casing (1 '), is connected with battery lead plate (4 '), and the other end of prime amplifier (8 ') is connected with cable (41 ') in the casing.
6, sonic sensor according to claim 1 is characterized in that described electrode (7) is fixed on the mass (6) with screw, and casing (1) is provided with hole (11), and cable (41), (71) pass from this hole (11).
7, sonic sensor according to claim 1 is characterized in that described mass (6) makes for metal material, and base (2) also is that metal material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144399 CN1223829C (en) | 2001-12-18 | 2001-12-18 | Sound wave sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144399 CN1223829C (en) | 2001-12-18 | 2001-12-18 | Sound wave sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1427248A true CN1427248A (en) | 2003-07-02 |
| CN1223829C CN1223829C (en) | 2005-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144399 Expired - Fee Related CN1223829C (en) | 2001-12-18 | 2001-12-18 | Sound wave sensor |
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| Country | Link |
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| CN (1) | CN1223829C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394099C (en) * | 2006-05-29 | 2008-06-11 | 重庆灵鉴检测仪器有限公司 | Pipeline leakage signal sensing device |
| WO2009064152A1 (en) * | 2007-11-16 | 2009-05-22 | Pegasus Control, S.A. De Cv. | Device for detecting fluid discharges |
| CN105122021A (en) * | 2013-02-14 | 2015-12-02 | 罗杰·赫里 | Acoustic sensor |
| CN105202373A (en) * | 2015-09-09 | 2015-12-30 | 北京科创三思科技发展有限公司 | Acoustic detection sensor for urban gas pipe network |
| CN105299475A (en) * | 2015-09-09 | 2016-02-03 | 北京科创三思科技发展有限公司 | Urban gas pipe network phased array sensor |
| CN105627106A (en) * | 2015-12-30 | 2016-06-01 | 中国石油天然气股份有限公司 | Infrasound sensor for gas pipeline leakage detection |
-
2001
- 2001-12-18 CN CN 01144399 patent/CN1223829C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100394099C (en) * | 2006-05-29 | 2008-06-11 | 重庆灵鉴检测仪器有限公司 | Pipeline leakage signal sensing device |
| WO2009064152A1 (en) * | 2007-11-16 | 2009-05-22 | Pegasus Control, S.A. De Cv. | Device for detecting fluid discharges |
| CN105122021A (en) * | 2013-02-14 | 2015-12-02 | 罗杰·赫里 | Acoustic sensor |
| CN105122021B (en) * | 2013-02-14 | 2018-04-24 | 索菲·伊丽莎白·克拉克 | Acoustic sensor |
| CN105202373A (en) * | 2015-09-09 | 2015-12-30 | 北京科创三思科技发展有限公司 | Acoustic detection sensor for urban gas pipe network |
| CN105299475A (en) * | 2015-09-09 | 2016-02-03 | 北京科创三思科技发展有限公司 | Urban gas pipe network phased array sensor |
| CN105627106A (en) * | 2015-12-30 | 2016-06-01 | 中国石油天然气股份有限公司 | Infrasound sensor for gas pipeline leakage detection |
| CN105627106B (en) * | 2015-12-30 | 2018-07-13 | 中国石油天然气股份有限公司 | Infrasound sensor for gas pipeline leakage detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1223829C (en) | 2005-10-19 |
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Granted publication date: 20051019 Termination date: 20101218 |