CN204536268U - Utilize the device of gas content in ultrasound examination ventilating water pipe - Google Patents
Utilize the device of gas content in ultrasound examination ventilating water pipe Download PDFInfo
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- CN204536268U CN204536268U CN201520250219.7U CN201520250219U CN204536268U CN 204536268 U CN204536268 U CN 204536268U CN 201520250219 U CN201520250219 U CN 201520250219U CN 204536268 U CN204536268 U CN 204536268U
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- reflecting body
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- detector tube
- water pipe
- ultrasound examination
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Abstract
A kind of device utilizing gas content in ultrasound examination ventilating water pipe, be provided with detector tube, inwall place in the middle part of detector tube is provided with a reflecting body, the inwall of the detector tube relative with reflecting body is provided with transducer A, B of coordinating with reflecting body, described two transducers are that reference symmetry is arranged with reflecting body, the continuous sound wave that transducer A sends reflects through reflecting body, and transducer B is arranged on this reflected ray body crossing with detector tube.Utilize sound wave when fluid liquid is measured, the difference of air in pipeline content causes the velocity of sound and signal amplitude to change.Automatically be judged as whether having a large amount of gas to exist in water by the degree of acoustic attenuation, whether prompting user or administrative authority will be exhausted operation in time, improve the accuracy of metering.
Description
Technical field
The utility model relates to a kind of flow metering device, particularly a kind of device utilizing gas content in ultrasound examination ventilating water pipe.
Background technology
No matter domestic is at present heating tube or water supply network, and gas is arranged phenomenon not to the utmost and happened occasionally, what is more pipe design inherently existing defects (being such as arranged on above Pipeline Water plane).The prerequisite of ultrasonic fluid metering is closed full packages road, and gas is the maximum killer affecting its metering performance, occurs that metering is inaccurate or directly lose function of measuring, causes user and administrative authority's understanding to create prejudice.
Summary of the invention
The technical problems to be solved in the utility model is for the deficiencies in the prior art, proposes a kind of device utilizing gas content in ultrasound examination ventilating water pipe of accurate measurement.
The technical problems to be solved in the utility model is achieved through the following technical solutions, a kind of device utilizing gas content in ultrasound examination ventilating water pipe, be characterized in: be provided with detector tube, inwall place in the middle part of detector tube is provided with a reflecting body, the inwall of the detector tube relative with reflecting body is provided with transducer A, B of coordinating with reflecting body, described two transducers are that reference symmetry is arranged with reflecting body, the continuous sound wave that transducer A sends reflects through reflecting body, and transducer B is arranged on this reflected ray body crossing with detector tube.
The technical problems to be solved in the utility model can also be come to realize further by the following technical programs, and the continuous sound that transducer A sends incident angle on reflecting body is 40 ~ 50 °.
The technical problems to be solved in the utility model can also be come to realize further by the following technical programs, and the continuous sound that transducer A sends incident angle on reflecting body is 45 °.
The technical problems to be solved in the utility model can also be come to realize further by the following technical programs, in the middle part of detector tube, body is provided with the vertical straight hole installing reflecting body, in straight hole, be connected with reflecting body mount pad by screw thread, described reflecting body is fixed on the top of reflecting body mount pad.
The technical problems to be solved in the utility model can also be come to realize further by the following technical programs, the body of detector tube is provided with the transducer mounting hole coaxially arranged with the incident ray of transducer A and reflected ray, and described transducer A, B are screwed in transducer mounting hole by screw thread.
The utility model compared with prior art, utilizes sound wave when fluid liquid is measured, and the difference of air in pipeline content causes the velocity of sound and signal amplitude to change.Automatically be judged as whether having a large amount of gas to exist in water by the degree of acoustic attenuation, whether prompting user or administrative authority will be exhausted operation in time, improve the accuracy of metering.
Accompanying drawing explanation
Fig. 1 is structure diagram of the present utility model.
Embodiment
A kind of device utilizing gas content in ultrasound examination ventilating water pipe, be provided with detector tube 4, inwall place in the middle part of detector tube is provided with a reflecting body 3, the inwall of the detector tube relative with reflecting body is provided with transducer A, B of coordinating with reflecting body, described two transducers 1,2 with reflecting body 3 for reference symmetry arrange, the continuous sound wave that transducer A sends reflects through reflecting body, and transducer B is arranged on this reflected ray body crossing with detector tube.
The continuous sound that transducer A sends incident angle on reflecting body is 40 ~ 50 °.
The continuous sound that transducer A sends incident angle on reflecting body is 45 °.
In the middle part of detector tube, body is provided with the vertical straight hole installing reflecting body, and in straight hole, be connected with reflecting body mount pad by screw thread, described reflecting body is fixed on the top of reflecting body mount pad.
The body of detector tube is provided with the transducer mounting hole coaxially arranged with the incident ray of transducer A and reflected ray, and described transducer A, B are screwed in transducer mounting hole by screw thread.
Sound wave transmission speed in water is (1200-1400) m/s, signal amplitude 1.7V; Transmission speed is about 340m/s in atmosphere, signal amplitude 800mV.
Sound wave is when fluid liquid is measured, and the difference of air in pipeline content causes the velocity of sound and signal amplitude to change.According to this characteristic, binding time measures the high speed sampling circuit of chip (TDC-GP22), founding mathematical models:
Situation 1, under having minimum gas situation in pipeline:
Sonic transmissions speed constant (under 105mm sound channel length 65us), metering performance is unaffected, but now sound wave has decay to a certain degree, and the signal amplitude that transducer B produces simultaneously drops to 1.2V.Now, system will export in LCDs " minimum gas existence ".
Technical characteristic: when signal intensity drops to 1.2V from 1.7V, system automatic decision is that minimum gas exists, and prompting user or administrative authority are noted.
Situation 2, under having more gas station in pipeline:
Sonic transmissions speed is comparatively slow (under 105mm sound channel length 130us) obviously, and metering performance is influenced and unstable, and acoustic attenuation is obvious simultaneously, and the signal amplitude that transducer B produces drops to 0.6V.Now, system will export in LCDs " more gas existence ".
Technical characteristic: when the velocity of sound drops to 130 us, when signal intensity drops to 0.6V from 1.7V, system automatic decision is that more gas exists, and prompting user or administrative authority are exhausted operation, otherwise affect gauging of products performance.
Situation 3, under having a large amount of gas station in pipeline:
Sonic transmissions speed is comparatively slow (under 105mm sound channel length more than 180us) obviously, metering performance by very large affect and unstable, metering is inaccurate, acoustic attenuation is obvious simultaneously, and the signal amplitude that transducer B produces drops to below 0.2V.Now, system exports " a large amount of gas existence " in LCDs.
Technical characteristic: when the velocity of sound drops to 180 more than us, when signal intensity drops to 0.2V from 1.7V, system automatic decision is that a large amount of gas exists, and prompting user or administrative authority must be exhausted operation, otherwise product will lose function of measuring.
Claims (5)
1. one kind utilizes the device of gas content in ultrasound examination ventilating water pipe, it is characterized in that: be provided with detector tube, inwall place in the middle part of detector tube is provided with a reflecting body, the inwall of the detector tube relative with reflecting body is provided with transducer A, B of coordinating with reflecting body, described two transducers are that reference symmetry is arranged with reflecting body, the continuous sound wave that transducer A sends reflects through reflecting body, and transducer B is arranged on this reflected ray body crossing with detector tube.
2. the device utilizing gas content in ultrasound examination ventilating water pipe according to claim 1, is characterized in that: the continuous sound that transducer A sends incident angle on reflecting body is 40 ~ 50 °.
3. the device utilizing gas content in ultrasound examination ventilating water pipe according to claim 1, is characterized in that: the continuous sound that transducer A sends incident angle on reflecting body is 45 °.
4. the device utilizing gas content in ultrasound examination ventilating water pipe according to claim 1, it is characterized in that: in the middle part of detector tube, body is provided with the vertical straight hole installing reflecting body, in straight hole, be connected with reflecting body mount pad by screw thread, described reflecting body is fixed on the top of reflecting body mount pad.
5. the device utilizing gas content in ultrasound examination ventilating water pipe according to claim 1, it is characterized in that: on the body of detector tube, be provided with the transducer mounting hole coaxially arranged with the incident ray of transducer A and reflected ray, described transducer A, B are screwed in transducer mounting hole by screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520250219.7U CN204536268U (en) | 2015-04-23 | 2015-04-23 | Utilize the device of gas content in ultrasound examination ventilating water pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520250219.7U CN204536268U (en) | 2015-04-23 | 2015-04-23 | Utilize the device of gas content in ultrasound examination ventilating water pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204536268U true CN204536268U (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201520250219.7U Active CN204536268U (en) | 2015-04-23 | 2015-04-23 | Utilize the device of gas content in ultrasound examination ventilating water pipe |
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| CN (1) | CN204536268U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129840A1 (en) * | 2019-12-26 | 2021-07-01 | 四方光电股份有限公司 | Ultrasonic gas sensor |
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2015
- 2015-04-23 CN CN201520250219.7U patent/CN204536268U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021129840A1 (en) * | 2019-12-26 | 2021-07-01 | 四方光电股份有限公司 | Ultrasonic gas sensor |
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