CN201772899U - Ultrasonic flowmeter tube section - Google Patents
Ultrasonic flowmeter tube section Download PDFInfo
- Publication number
- CN201772899U CN201772899U CN2010202667623U CN201020266762U CN201772899U CN 201772899 U CN201772899 U CN 201772899U CN 2010202667623 U CN2010202667623 U CN 2010202667623U CN 201020266762 U CN201020266762 U CN 201020266762U CN 201772899 U CN201772899 U CN 201772899U
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- piezoelectric ceramic
- cavity
- inner cavity
- ceramic chip
- internal layer
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Abstract
The utility model discloses an ultrasonic flowmeter tube section, which comprises an outer tube and an inner cavity. A piezoelectric ceramic chip is mounted in the inner cavity and particularly packaged in the cavity via resin materials, the inner cavity holding the piezoelectric ceramic chip is arranged on a center line of fluid, and the outer tube is integrated with the inner cavity. The piezoelectric ceramic chip is directly packaged in the cavity through resin materials, so that the piezoelectric ceramic chip can be fixed and protected, and scaling caused by a metal sheet bonded protection structure can be avoided. The piezoelectric ceramic chip transmits and receives ultrasonic wave at the center line of a medium channel, so that measurement can be more accurate. The outer tube and the inner cavity are integrated, thereby reducing impact and shock onto the cavity and the chip inside the cavity due to over-speed fluid and leading measurement result to be more accurate.
Description
Technical field
The utility model relates to ultrasonic flow meter, specifically is a kind of ultrasonic flow meter pipeline section.
Background technology
Pipeline section type ultrasonic flow instrument is to be principle with " time difference method ", measures the instrument of fluid flow in the pipe.At present, ultrasonic flow meter is of a great variety on the market, but all exists not enough in the use.For example, π type structural table shape complexity is so the flow field complex shape can cause the MEDIA FLOW instability in the measured straight length; And the flow resistance coefficient of table body increases; Mechanical processing difficulty is also big.(surface of piezoelectric ceramic wafer is parallel to the center line of medium channel to reflective structure table body, adorn two catoptrons in the medium channel) simple with respect to π type structural table shape, difficulty of processing is little, that but anti-medium impacts catoptron in medium channel is indifferent, and the catoptron of metal is exigent resistive connection dirt ability in aqueous medium.In addition, the packaged type of piezoelectric ceramic wafer mostly adopts the mode of bonded metal sheet, there are two shortcomings in this protection mode: 1, the tackifier cracking can make and form vacuum layer or air layer between piezoelectric ceramic wafer and the sheet metal, is hyperacoustic poor conductor.2, sheet metal fouling easily in water, the dirt of being tied can hinder hyperacoustic conducting equally.
The utility model content
In order to overcome above-mentioned defective, the purpose of this utility model provides the high ultrasonic flow meter pipeline section of a kind of measuring accuracy.
The technical solution of the utility model is: the ultrasonic flow meter pipeline section, comprise outer body and internal layer cavity, and in the described internal layer cavity piezoelectric ceramic wafer is housed, described piezoelectric ceramic wafer is encapsulated in the cavity by resin material.
The described internal layer cavity of piezoelectric ceramic wafer that is equipped with is on the center line of fluid.
Described outer body and internal layer cavity are integrative-structures.
The beneficial effects of the utility model are: adopt resin material directly piezoelectric ceramic wafer to be encapsulated in the cavity, fixedly piezoelectric ceramic wafer can play protective action again, can also avoid " the bonded metal sheet " scale problems brought of this safeguard structure.And piezoelectric ceramic wafer transmits and receives ultrasound wave in the centerline of medium channel, can make measurement more accurate; The integrative-structure of outer body and internal layer cavity has also reduced because too fast impact and the vibrations that cavity and internal wafer thereof are brought of fluid velocity, thereby makes measurement result more accurate.
Description of drawings
Fig. 1 ultrasonic flow meter pipeline section front view
The cut-open view of Fig. 2 Figure 1A-A direction
Fig. 3 ultrasonic flow meter pipeline section work synoptic diagram
Among the figure: 1, outer body 2, internal layer cavity 3, piezoelectric ceramic wafer
Embodiment
Below in conjunction with specific embodiment the utility model is further explained explanation.
As depicted in figs. 1 and 2, the ultrasonic flow meter pipeline section comprises outer body 1 and internal layer cavity 2, in the described internal layer cavity 2 piezoelectric ceramic wafer 3 is housed, and described piezoelectric ceramic wafer is encapsulated in the cavity by resin material.The internal layer cavity 2 that piezoelectric ceramic wafer 3 is housed is on the center line of fluid.Outer body 1 and internal layer cavity 2 are integrative-structures.The lead-in wire that is connected on the piezoelectric ceramic wafer 3 passes internal layer cavity 2 and outer body 1, is connected on the testing tool then.
Fig. 3 is a ultrasonic flow meter pipeline section work synoptic diagram, and two ultrasonic flow meter pipeline sections are arranged among the figure, and one as water inlet pipe, and one as rising pipe, middlely connects by a connecting pipe 4.
The above; it only is the preferable embodiment of the utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. the ultrasonic flow meter pipeline section comprises outer body and internal layer cavity, it is characterized in that: in the described internal layer cavity piezoelectric ceramic wafer is housed, described piezoelectric ceramic wafer is encapsulated in the cavity by resin material.
2. ultrasonic flow meter pipeline section according to claim 1 is characterized in that: the described internal layer cavity of piezoelectric ceramic wafer that is equipped with is on the center line of fluid.
3. ultrasonic flow meter pipeline section according to claim 1 and 2 is characterized in that: described outer body and internal layer cavity are integrative-structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202667623U CN201772899U (en) | 2010-07-19 | 2010-07-19 | Ultrasonic flowmeter tube section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202667623U CN201772899U (en) | 2010-07-19 | 2010-07-19 | Ultrasonic flowmeter tube section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772899U true CN201772899U (en) | 2011-03-23 |
Family
ID=43752747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202667623U Expired - Fee Related CN201772899U (en) | 2010-07-19 | 2010-07-19 | Ultrasonic flowmeter tube section |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201772899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916526A (en) * | 2019-03-11 | 2019-06-21 | 西北工业大学 | A kind of the back pin configuration and preparation method of the extraction of the ito thin film thermocouple electric signal on turbo blade |
-
2010
- 2010-07-19 CN CN2010202667623U patent/CN201772899U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109916526A (en) * | 2019-03-11 | 2019-06-21 | 西北工业大学 | A kind of the back pin configuration and preparation method of the extraction of the ito thin film thermocouple electric signal on turbo blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110323 Termination date: 20160719 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |