CN102778261A - Ultrasonic flow sensor - Google Patents

Ultrasonic flow sensor Download PDF

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Publication number
CN102778261A
CN102778261A CN2011101184352A CN201110118435A CN102778261A CN 102778261 A CN102778261 A CN 102778261A CN 2011101184352 A CN2011101184352 A CN 2011101184352A CN 201110118435 A CN201110118435 A CN 201110118435A CN 102778261 A CN102778261 A CN 102778261A
Authority
CN
China
Prior art keywords
sensor
bearing
ultrasonic flow
load
transducing sheet
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.)
Pending
Application number
CN2011101184352A
Other languages
Chinese (zh)
Inventor
张曙光
李健
李天文
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
GUANGZHOU PANYU AODIWEI ELECTRONIC CO Ltd
Original Assignee
GUANGZHOU PANYU AODIWEI ELECTRONIC CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GUANGZHOU PANYU AODIWEI ELECTRONIC CO Ltd filed Critical GUANGZHOU PANYU AODIWEI ELECTRONIC CO Ltd
Priority to CN2011101184352A priority Critical patent/CN102778261A/en
Publication of CN102778261A publication Critical patent/CN102778261A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an ultrasonic flow sensor and belongs to the field of sensors. The ultrasonic flow sensor comprises a casing, a PCB (Printed Circuit Board), a sensor transducer film and a connecting wire, wherein a sealing ring is arranged in the casing; the sensor transducer film is arranged in the casing; the connecting wire is connected with the PCB and the sensor transducer film; a waterproof sealant is used for carrying out transduction sealing on the sensor; the surface of the sensor transducer film is coated with a glass body antiscale layer; a bearing fastening solenoid coil is arranged in the casing; and a protrusion is arranged at the middle of the bearing fastening solenoid coil and can be contacted with the bottom of the sensor transducer film. According to the ultrasonic flow sensor disclosed by the invention, the scaling can be effectively prevented and the pressure resistance of products is improved.

Description

Ultrasonic flow sensor
 
Technical field
Ultrasonic flow sensor of the present invention belongs to sensor field.
Background technology
Plesoelectric ultrasonic flow sensor is the core component of at present international ultrasonic flow meter, is by the outer signal line, casting glue, PCB wiring board; Shell, O-ring seal, sensor transducing sheet; Waterproof gasket cement, connecting line, splicing ear is formed; Outer signal line connection PCB wiring board and splicing ear are provided with O-ring seal in the enclosure, and sensor transducing sheet is installed in the enclosure; Connecting line connection PCB wiring board and sensor transducing sheet, waterproof gasket cement seals through casting glue the sealing of sensor transducing with the PCB wiring board.Ultrasonic flow sensor is in the process of using; Have two factors can influence the performance of sensor: the one, under long-term situation about using; The ultrasonic sensor transducing sheet surface meeting scaling of shell influences the emission and the reception of ultrasonic signal, thereby the overall performance of sensor is descended.The 2nd, because manifold pressure is bigger, the radial crackle in center can occurs under the condition that the sensor transducing sheet of ultrasonic flow sensor supports on the edge of, thereby cause the global failure of sensor.
Summary of the invention
The objective of the invention is to avoid the weak point of prior art, and a kind of sensor transducing sheet surface scale of can effectively avoiding is provided, improve the resistance to pressure of product, the ultrasonic flow sensor that increases the service life.
The objective of the invention is to reach through following measure, ultrasonic flow sensor comprises shell, the PCB wiring board; Sensor transducing sheet, connecting line is formed, and O-ring seal is installed in the enclosure; Sensor transducing sheet is installed in the enclosure, and shell is open, and sensor transducing sheet directly contacts with extraneous; Connecting line connection PCB wiring board and sensor transducing sheet, waterproof gasket cement is with the sealing of sensor transducing, at sensor transducing sheet surface-coated vitreum antiscale layer.Sensor transducing sheet directly contacts with the interior liquid of pipeline, has avoided the influence of scale problems to sensor performance at sensor transducing sheet surface-coated vitreum antiscale layer.
The present invention installs the fastening bung flange of load-bearing in the enclosure; There is convexity at the fastening bung flange of load-bearing middle part; Convexity can with sensor transducing sheet pig; Sensor transducing sheet is played a supporting role, and form certain prestress that supports to the top, thus the destruction of avoiding sensor transducing sheet to cause because of the influence of the fluid pressure in the pipeline.
The fastening bung flange of load-bearing of the present invention is provided with screw thread, and the present invention is provided with screw thread in the enclosure, and the fastening bung flange of load-bearing is installed in the enclosure through screw thread.
The present invention is provided with sealing gasket on the fastening bung flange of load-bearing.
The present invention is good antiscale property effectively, improves the resistance to pressure of product.
Description of drawings
Accompanying drawing 1 is a structural representation of the present invention.
Accompanying drawing 2 is B portion enlarged diagrams of accompanying drawing 1.
Accompanying drawing 3 is load-bearing fastening screw coil structures synoptic diagram of the present invention.
The A-A schematic cross-section of the accompanying drawing 3 of accompanying drawing 4.
Accompanying drawing 5 is C-C schematic cross-sections of accompanying drawing 3.
Embodiment
Below in conjunction with accompanying drawing the present invention is described further.
Among the figure: outer signal line 1, casting glue 2, PCB wiring board 3, the fastening bung flange 4 of load-bearing, shell 5, O-ring seal 6, sensor transducing sheet 7, antiscale layer 8, waterproof gasket cement 9, connecting line 10, splicing ear 11, sealing gasket 12, convexity 13, screw thread 14.
Shown in accompanying drawing 1, accompanying drawing 2, ultrasonic flow sensor of the present invention comprises outer signal line 1, casting glue 2, PCB wiring board 3; The fastening bung flange 4 of load-bearing, shell 5, O-ring seal 6, sensor transducing sheet 7; Antiscale layer 8, waterproof gasket cement 9, connecting line 10, splicing ear 11, sealing gasket 12 are formed; Outer signal line 1 connection PCB wiring board 3 and splicing ear 11, connecting line 10 connection PCB wiring boards 3 and sensor transducing sheet 7 are provided with O-ring seal 6 in shell 5, and sensor transducing sheet 7 is installed in the shell 5; O-ring seal 6 is being supported sensor transducing sheet 7, at sensor transducing sheet surface-coated vitreum antiscale layer 8, is provided with screw thread in the enclosure; The fastening bung flange 4 of load-bearing is provided with screw thread, and the fastening bung flange 4 of load-bearing is installed in the enclosure through screw thread, on the fastening bung flange of load-bearing, sealing gasket 12 is set; The fastening bung flange of load-bearing cooperates with sensor transducing sheet through sealing gasket, in the middle part of the fastening bung flange of load-bearing convexity is arranged, convexity can with sensor transducing sheet pig; Sensor transducing sheet is played a supporting role, and form certain prestress that supports to the top, thus the destruction of avoiding sensor transducing sheet to cause because of the influence of the fluid pressure in the pipeline.On sensor transducing sheet, O-ring seal 6 is arranged, below sensor transducing sheet, have sealing gasket supporting sensor transducing sheet, waterproof gasket cement 9 seals through casting glue 27 sealings of sensor transducing with PCB wiring board 3.
Shown in accompanying drawing 3, accompanying drawing 4, accompanying drawing 5; The fastening bung flange of load-bearing of the present invention is provided with screw thread 14, and there is convexity 13 at the fastening bung flange of load-bearing middle part, and the fastening bung flange of load-bearing is installed in the enclosure through screw thread; Convexity can with sensor transducing sheet pig; Sensor transducing sheet is played a supporting role, and form certain prestress that supports to the top, thus the destruction of avoiding sensor transducing sheet to cause because of the influence of the fluid pressure in the pipeline.

Claims (3)

1. a ultrasonic flow sensor comprises shell, the PCB wiring board; Sensor transducing sheet, connecting line is formed, and O-ring seal is installed in the enclosure; Sensor transducing sheet is installed in the enclosure, connecting line connection PCB wiring board and sensor transducing sheet, and waterproof gasket cement seals the sensor transducing; It is characterized in that at sensor transducing sheet surface-coated vitreum antiscale layer the fastening bung flange of load-bearing being installed in the enclosure, there is convexity at the fastening bung flange of load-bearing middle part.
2. ultrasonic flow sensor according to claim 1 is characterized in that the fastening bung flange of load-bearing is provided with screw thread, is provided with screw thread in the enclosure, and the fastening bung flange of load-bearing is installed in the enclosure through screw thread.
3. ultrasonic flow sensor according to claim 1 is characterized in that on the fastening bung flange of load-bearing, sealing gasket being set.
CN2011101184352A 2011-05-09 2011-05-09 Ultrasonic flow sensor Pending CN102778261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011101184352A CN102778261A (en) 2011-05-09 2011-05-09 Ultrasonic flow sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011101184352A CN102778261A (en) 2011-05-09 2011-05-09 Ultrasonic flow sensor

Publications (1)

Publication Number Publication Date
CN102778261A true CN102778261A (en) 2012-11-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011101184352A Pending CN102778261A (en) 2011-05-09 2011-05-09 Ultrasonic flow sensor

Country Status (1)

Country Link
CN (1) CN102778261A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103868626A (en) * 2012-12-18 2014-06-18 杭州三花研究院有限公司 Transducer and heat meter
CN103868629A (en) * 2012-12-18 2014-06-18 杭州三花研究院有限公司 Ultrasonic heat meter
CN103868625A (en) * 2012-12-18 2014-06-18 杭州三花研究院有限公司 Ultrasonic heat meter

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2102505U (en) * 1991-07-15 1992-04-22 何荣新 Heat measuring type rapid response optical radiation detector
CN1234587A (en) * 1998-05-05 1999-11-10 唐圣严 Explosion-proof lighting-prtection insulator of electric overhead ground wire
CN2768023Y (en) * 2005-01-10 2006-03-29 骆澜涛 Ultrasonic sensor probe capable of direct outward luminescence
CN2796747Y (en) * 2005-05-26 2006-07-19 深圳市普罗惠仁医学科技有限公司 Spherical crown type concave ball surface ultrasonic transducer
CN201184802Y (en) * 2008-03-10 2009-01-21 韩德寿 Ultrasonic flux transducer
CN201251460Y (en) * 2008-08-25 2009-06-03 上海维思仪器仪表有限公司 Ultrasonic transducer adopting insulated sealing glass connecting terminal
CN101680791A (en) * 2007-05-10 2010-03-24 丹尼尔度量和控制公司 Systems and methods of a transducer having a plastic matching layer
CN101718566A (en) * 2008-07-15 2010-06-02 克洛纳有限公司 Ultrasound converter
CN101776469A (en) * 2009-01-09 2010-07-14 上海一诺仪表有限公司 Three-tooth helical flow meter
CN201611266U (en) * 2010-03-16 2010-10-20 山东力创科技有限公司 Ultrasonic transducer of heat meter
CN201680866U (en) * 2010-05-28 2010-12-22 江苏迈拓智能仪表有限公司 Reflection transducer assembly of ultrasound flow meter and heat meter
CN201811764U (en) * 2010-10-14 2011-04-27 重庆市伟岸测器制造股份有限公司 Anti-scaling ultrasonic flow sensor
CN202092693U (en) * 2011-05-09 2011-12-28 广州市番禺区奥迪威电子有限公司 Pressure-resistant type ultrasonic flow sensor

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2102505U (en) * 1991-07-15 1992-04-22 何荣新 Heat measuring type rapid response optical radiation detector
CN1234587A (en) * 1998-05-05 1999-11-10 唐圣严 Explosion-proof lighting-prtection insulator of electric overhead ground wire
CN2768023Y (en) * 2005-01-10 2006-03-29 骆澜涛 Ultrasonic sensor probe capable of direct outward luminescence
CN2796747Y (en) * 2005-05-26 2006-07-19 深圳市普罗惠仁医学科技有限公司 Spherical crown type concave ball surface ultrasonic transducer
CN101680791A (en) * 2007-05-10 2010-03-24 丹尼尔度量和控制公司 Systems and methods of a transducer having a plastic matching layer
CN201184802Y (en) * 2008-03-10 2009-01-21 韩德寿 Ultrasonic flux transducer
CN101718566A (en) * 2008-07-15 2010-06-02 克洛纳有限公司 Ultrasound converter
CN201251460Y (en) * 2008-08-25 2009-06-03 上海维思仪器仪表有限公司 Ultrasonic transducer adopting insulated sealing glass connecting terminal
CN101776469A (en) * 2009-01-09 2010-07-14 上海一诺仪表有限公司 Three-tooth helical flow meter
CN201611266U (en) * 2010-03-16 2010-10-20 山东力创科技有限公司 Ultrasonic transducer of heat meter
CN201680866U (en) * 2010-05-28 2010-12-22 江苏迈拓智能仪表有限公司 Reflection transducer assembly of ultrasound flow meter and heat meter
CN201811764U (en) * 2010-10-14 2011-04-27 重庆市伟岸测器制造股份有限公司 Anti-scaling ultrasonic flow sensor
CN202092693U (en) * 2011-05-09 2011-12-28 广州市番禺区奥迪威电子有限公司 Pressure-resistant type ultrasonic flow sensor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103868626A (en) * 2012-12-18 2014-06-18 杭州三花研究院有限公司 Transducer and heat meter
CN103868629A (en) * 2012-12-18 2014-06-18 杭州三花研究院有限公司 Ultrasonic heat meter
CN103868625A (en) * 2012-12-18 2014-06-18 杭州三花研究院有限公司 Ultrasonic heat meter
CN103868626B (en) * 2012-12-18 2017-07-11 杭州三花研究院有限公司 A kind of transducer and calorimeter

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Application publication date: 20121114

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