CN2869805Y - Supersonic-wave sensor external sleeve pipe - Google Patents
Supersonic-wave sensor external sleeve pipe Download PDFInfo
- Publication number
- CN2869805Y CN2869805Y CN 200620006392 CN200620006392U CN2869805Y CN 2869805 Y CN2869805 Y CN 2869805Y CN 200620006392 CN200620006392 CN 200620006392 CN 200620006392 U CN200620006392 U CN 200620006392U CN 2869805 Y CN2869805 Y CN 2869805Y
- Authority
- CN
- China
- Prior art keywords
- ultrasonic sensor
- outer tube
- ultrasonic
- outer sleeve
- sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
An outer sleeve of the ultrasonic sensors. The inside of the midsection of the outer sleeve takes the shape of the lateral surface of the ultrasonic sensor in a parallel and interval manner, and is fitted over the outer side of the ultrasonic sensor. The inner surface of the outer sleeve midsection is in parallel with and spaced from the ultrasonic sensor lateral surface. The forepart of the outer sleeve exceeding the ultrasonic sensor emitting surface takes the shape of horns. The second half of the outer sleeve is provided with a mouthpiece that is connected with the ultrasonic sensor. The ultrasonic material level device having the outer sleeve structure above is capable of meeting the operating requirement in the case of a long connection tube in the container. In addition, the outer sleeve is simple in structure, easy to be manufactured, and convenient to be installed.
Description
Technical field
The utility model relates to a kind of range finding ultrasonic sensor structure, belongs to supersonic wave level sensor and supporting parts thereof.
Technical background
Ultrasonic material level meter is to utilize the acoustic reflection principle to measure the interior liquid level of various containers or the instrument of solid material level.Generally be made of ultrasonic sensor and electronic unit, ultrasonic sensor and electronic unit can be designed to integral type or split type composition mode.The ultrasonic sensor liquid level in tested container or charge level emission ultrasound wave and receive reflection echo under the control of electronic unit.
Usually advanced ultrasonic material level meter electronic unit adopts the method for automated power control to launch ultrasound wave, promptly along with the measured object position from the near to the remote, the ultrasonic waves transmitted energy increases gradually, this is because distance is far away more, more macro-energy is sent more, could guarantee that echo is reflected, for electronic unit detects, and in-plant the time, can make the ultrasonic energy that sends smaller, electronic unit also can detect, but for tested liquid level and charge level, they are always not smooth, so even distance near the time, the ultrasound wave that sends also must have certain intensity.Adopt the method for automatic gain control to discern for the reflection echo electronic unit, promptly along with the measured object position from the near to the remote, enlargement factor to echoed signal increases gradually, distance is near more, reflection echo is strong more, needed enlargement factor is just little, and the enlargement factor to in-plant spurious echo is also little simultaneously, makes spurious echo be difficult for being detected.
When tested container was closed container, ultrasonic material level meter was installed on the flange port of container, as shown in Figure 1 usually.This mounting means requires the adapter between ring flange and the container very short usually, assurance ultrasonic sensor fore-end will be stretched in taking over, its reason is if ultrasonic sensor integral body is positioned at when taking over, the ultrasound beamformer that sensor emission goes out produces stronger reflection between can and taking over, spurious signal appears, take over long more, thin more, spurious signal is strong more, even adopt automated power control and automatic gain control, because spurious signal is strong excessively, also can be detected, thereby the detection of interference normal signal makes the level meter cisco unity malfunction by electronic unit.
Ultrasonic sensor is normally cylindrical, and inside is piezoelectric transducer, is encapsulated by the cylindrical plastic shell, and piezoelectric transducer sees through the sensor housing front end and outwards launches ultrasound wave, and receives reflection echo, produces electric signal.Because sensor outer housing front end and side are structure as a whole, therefore when working sensor, its side also has faint relatively ultrasound wave and outwards sends.When ultrasonic sensor integral body is positioned at the container adapter, if the faint ultrasound wave that sensors sides is sent is reflected by nozzle inner wall, and its stroke is greater than sensor remained shock life period, and this reflected signal will be detected so, becomes undesired signal.Simultaneously, the ultrasound beamformer that sensor front end is outwards sent has certain spread angle, when if sensor integral body is positioned at the container adapter, ultrasound beamformer can and be taken over circular edge and have an effect with the adapter medial surface, produce stronger reflection echo, by sensor is received, and then detected, become undesired signal by electronic unit.
Normal conditions are, the length that the flange on the closed container is taken over is general all greater than the length of ultrasonic sensor.Want to satisfy the installation requirement of ultrasonic material level meter, just must transform, and this transformation is normally very difficult, do not allow container is transformed under a lot of situations the adapter on the container.
The utility model content
The utility model is exactly will solve ultrasonic material level meter in the prior art to take over when longer the side and take over the problem that circular edge reflects interference wave at container, a kind of ultrasonic sensor outer tube has been proposed, adopt this outer tube can make ultrasonic material level meter satisfy adapter on the container request for utilization when longer, can reduce ultrasonic beam greatly and take between volume reflection, make the degree that this volume reflection can be attenuated to can not become undesired signal.
The outer tube of the utility model ultrasonic sensor, it is characterized in that: the outer tube stage casing inboard for the shape of ultrasonic sensor lateral surface parallel interval, be enclosed within the outside of ultrasonic sensor, outer tube stage casing medial surface and ultrasonic sensor lateral surface are parallel to each other and leave at interval, the leading portion that outer tube exceeds the ultrasonic sensor surface of emission is horn-like, is provided with the interface that is connected with ultrasonic sensor at the latter half of outer tube.
As shown in Figure 2, outer tube 2 is enclosed within the outside of ultrasonic sensor 1, outer tube stage casing medial surface and ultrasonic sensor lateral surface are parallel to each other and leave at interval, its relative spacing preferably is not more than 1.5 millimeters, if it is bigger at interval, sound absorption, sound insulating material should be added, as sponge, foamed plastic film at interval.
Outer tube exceeds the ultrasonic sensor surface of emission foremost, and the bore of the leading portion of outer tube (promptly beginning forward this part from the ultrasonic sensor surface of emission) becomes greatly gradually, is toroidal, and medial surface can be tapered plane or arc surface.This a part of length of the leading portion of outer tube is more preferably greater than 10 millimeters, the shortest line on the outer tube leading portion hydraucone medial surface from the peak to the minimum point and the angle of sensor emission face are preferably in 105 degree between 125 degree, that is to say that the shortest line from the peak to the minimum point is preferably in 55 degree between 75 degree with the relative acute angle of sensor emission face on its medial surface.The postmedian of outer tube fixes by the shell of screw thread or mode such as bonding and sensor.
When the interval of outer tube stage casing medial surface and ultrasonic sensor lateral surface hour, the faint ultrasound wave that the ultrasonic sensor lateral surface sends can repeatedly reflect most energy and be attenuated fast in this little interval, and the time that these most reflected energies exist is sent remained shock time behind the ultrasound wave less than sensor, and Sheng Xia reflected energy is not owing to very faintly just can become undesired signal afterwards.When the interval of outer tube stage casing medial surface and ultrasonic sensor lateral surface was big, owing to add sound absorption, sound insulating material at interval, the faint ultrasound wave that the ultrasonic sensor lateral surface sends can not become undesired signal yet.
Because the leading portion inboard of outer tube is a toroidal, the ultrasound beamformer angle that ultrasonic sensor is sent forward narrows down, acoustic wave energy can be propagated to the direction perpendicular to the surface of emission as far as possible, in the time of in this ultrasonic sensor with outer sleeve structure is installed on the container adapter, can reduce the volume reflection between ultrasonic beam and the adapter greatly, make this volume reflection to be attenuated to and to be become undesired signal by the detected degree of electronic unit.
Ultrasonic material level meter with above-mentioned outer sleeve structure can satisfy adapter on the container request for utilization when longer, under the ultrasonic emitting energy condition identical with the echo enlargement factor, can make when being reduced to encased pipe not by the volume reflection that take over to produce below 10%, can not be detected by electronic unit.This outer sleeve structure is simple simultaneously, makes easily, and is easy for installation.Its structure combines compactness with ultrasonic sensor, and whole ultrasonic sensor profile and the change in size that has an outer tube is less, need not change the mounting condition on the container, is beneficial to installation.
Description of drawings
Fig. 1 is the mounting means of existing ultrasonic material level meter on closed container.
Fig. 2 is the constitutional diagram of outer tube of the present utility model and ultrasonic sensor.
Fig. 3 is the constitutional diagram of the utility model specific embodiment outer tube and ultrasonic sensor.
Embodiment
Preferred embodiment below in conjunction with a description of drawings indefiniteness of the present utility model.
As shown in Figure 3, ultrasonic sensor is cylindrical, sensor housing 4 by piezoelectric transducer 3 and encapsulation piezoelectric transducer constitutes, piezoelectric transducer is made of piezoelectric crystal and front and back electrode, piezoelectric transducer 3 external diameters are 38 millimeters, thick 30 millimeters, the front end external diameter of sensor housing 4 is 52 millimeters, and housing 4 length are 100 millimeters.In the outside of housing 4 is outer tube 5, and outer tube 5 is cylindrical, and its external diameter is 58 millimeters, and length is 100 millimeters.Outer tube 5 stage casing medial surfaces and housing 4 lateral surfaces are parallel to each other and leave at interval, and its relative spacing is 1 millimeter.Outer tube 5 rear portions adopt engage thread and housing 4 to be connected and fixed.Outer tube 5 front portions are 18 millimeters from this a part of height that housing 4 front end faces begin forward, and its bore becomes greatly gradually, and internal diameter size is from 48 millimeters 58 millimeters of increasing to top, and the medial surface of outer tube 5 leading portions is a tapered plane.For keeping attractive in appearance, improve structural compactness, do not weaken simultaneously sensor emission again and receive hyperacoustic ability, the outer tube leading portion be horn-like and the stage casing cylindricality between a closing in is arranged, the closing in plane of structure cooperates with ultrasonic sensor surface of emission outer shroud side edge, can add rubber or plastic washer between the two and isolate.Housing 4 is plastics with the material of outer tube 5, as Polyvinylchloride, polypropylene etc.The ultrasonic sensor inner space is filled by acoustic absorbant sponge 7.The lateral surface rear portion of ultrasonic sensor housing 4 is for installing screw thread 6, is used for the installing and fixing of whole ultrasonic wave sensor, and the top screw thread that screw thread 6 is installed is used for fixing outer tube 5.
Claims (3)
1. ultrasonic sensor outer tube, it is characterized in that: the outer tube stage casing inboard for the shape of ultrasonic sensor lateral surface parallel interval, be enclosed within the outside of ultrasonic sensor, outer tube stage casing medial surface and ultrasonic sensor lateral surface are parallel to each other and leave at interval, the leading portion that outer tube exceeds the ultrasonic sensor surface of emission is horn-like, is provided with the interface that is connected with ultrasonic sensor at the latter half of outer tube.
2. as the said ultrasonic sensor outer tube of claim 1, it is characterized in that: outer tube is a closing between trumpet-shaped leading portion and the stage casing, the outer tube leading portion that exceeds the ultrasonic sensor surface of emission becomes greatly gradually from this a part of bore that the ultrasonic sensor surface of emission begins forward, and medial surface is tapered plane or arc surface.
3. as the said ultrasonic sensor outer tube of claim 1, it is characterized in that: the shortest line on the outer tube leading portion hydraucone medial surface from the peak to the minimum point and the angle of sensor emission face are between 105 degree are spent to 125.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006392 CN2869805Y (en) | 2006-02-27 | 2006-02-27 | Supersonic-wave sensor external sleeve pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620006392 CN2869805Y (en) | 2006-02-27 | 2006-02-27 | Supersonic-wave sensor external sleeve pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2869805Y true CN2869805Y (en) | 2007-02-14 |
Family
ID=37724745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620006392 Expired - Fee Related CN2869805Y (en) | 2006-02-27 | 2006-02-27 | Supersonic-wave sensor external sleeve pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2869805Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029843B (en) * | 2006-02-27 | 2012-05-30 | 董志伟 | Anti-intrusion ultrasonic sensor |
-
2006
- 2006-02-27 CN CN 200620006392 patent/CN2869805Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029843B (en) * | 2006-02-27 | 2012-05-30 | 董志伟 | Anti-intrusion ultrasonic sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3050631C (en) | Ultrasonic level sensor with reflector | |
| US20190368915A1 (en) | Ultrasonic level sensor with sound trap | |
| CN2869805Y (en) | Supersonic-wave sensor external sleeve pipe | |
| CN114718709A (en) | Control method for output signal of automobile urea quality sensor | |
| CN114111927B (en) | High-frequency ultrasonic sensor suitable for gas flow detection | |
| CN201748957U (en) | Closed ultrasonic material-level sensor | |
| CN114111928A (en) | High-frequency ultrasonic sensor suitable for gas flow detection | |
| RU182146U1 (en) | WASTE BIN CONTAINER | |
| RU2445748C1 (en) | Piezoelectric transducer | |
| CN101029843B (en) | Anti-intrusion ultrasonic sensor | |
| CN2511982Y (en) | Probe for miniature ultrasonic sensor | |
| CN2490560Y (en) | Outer ultrasonic liquid level switch probe | |
| CN201060029Y (en) | Supersonic transducer with double sensors | |
| CN111896063A (en) | Ultrasonic water meter with intelligent switch function | |
| CN2599530Y (en) | Special-purpose tubulation for ultrasonic heat flowmeter changer | |
| CN2681098Y (en) | Ultrasonic probe | |
| CN105181069A (en) | Inside-container liquid volume measuring method and device based on acoustic detection | |
| CN205079828U (en) | Liquid volume measuring device based on sound wave detects | |
| CN110779986A (en) | Be applied to two probes of urea quality sensor | |
| CN212513173U (en) | Ultrasonic water meter with intelligent switch function | |
| Zhang et al. | Research of ultrasonic distance measurement system based on DSP | |
| CN220367419U (en) | Ultrasonic sensor | |
| CN114235112B (en) | Flow field monitoring device applied to ultrasonic water meter | |
| US20210116289A1 (en) | Arrangement and Method for Determining a Minimum Filling Level of a Fluid in a Fluid Container | |
| RU90554U1 (en) | PRIMARY MEASURING TRANSMITTER OF SOUND SPEED SENSOR IN LIQUID |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070214 Termination date: 20140227 |