WO2023035562A1 - Débitmètre avec capteur ultrasonique intégré et corps du débitmètre - Google Patents

Débitmètre avec capteur ultrasonique intégré et corps du débitmètre Download PDF

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Publication number
WO2023035562A1
WO2023035562A1 PCT/CN2022/079121 CN2022079121W WO2023035562A1 WO 2023035562 A1 WO2023035562 A1 WO 2023035562A1 CN 2022079121 W CN2022079121 W CN 2022079121W WO 2023035562 A1 WO2023035562 A1 WO 2023035562A1
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WO
WIPO (PCT)
Prior art keywords
piezoelectric ceramic
meter
ultrasonic sensor
metal insert
meter body
Prior art date
Application number
PCT/CN2022/079121
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English (en)
Chinese (zh)
Inventor
姜晓峰
邢燕燕
左林
Original Assignee
威海市天罡仪表股份有限公司
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Application filed by 威海市天罡仪表股份有限公司 filed Critical 威海市天罡仪表股份有限公司
Publication of WO2023035562A1 publication Critical patent/WO2023035562A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/667—Arrangements of transducers for ultrasonic flowmeters; Circuits for operating ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/14—Casings, e.g. of special material

Definitions

  • the utility model relates to the field of flow measurement, in particular to an integrated flowmeter of an ultrasonic sensor and a meter body.
  • the ultrasonic flowmeter is based on the principle that the sound velocity superimposes the liquid flow velocity information in the process of ultrasonic waves propagating in the liquid, and the electronic components recognize the flow velocity information to calculate the flow rate.
  • an ultrasonic flowmeter includes main parts such as a meter body, an ultrasonic sensor, a circuit board assembly, and a box body.
  • the meter body is usually made of metal, and the ultrasonic sensor installation hole and sealing structure are set; Some parts use waterproof structure; the box body plays the role of protecting the circuit board components, which requires a certain protection level of the shell, but the cable of the ultrasonic sensor must be connected with the circuit board component, and the box body must also have a certain amount of protection for the cables.
  • sealing design the above are the most basic components of the ultrasonic flowmeter.
  • the utility model provides an integrated flowmeter of an ultrasonic sensor and a meter body with a simple structure.
  • the utility model provides an ultrasonic sensor and meter body integrated flowmeter, which is provided with an injection molded meter body, a piezoelectric ceramic sheet body, a box body and a circuit board assembly, the injection molded meter body and the box body are integrally formed, and the box body is provided with a pair of blind
  • the piezoelectric ceramic sheet is installed in the blind hole, and the inner tube of the injection molded watch is provided with a metal insert, which reflects the ultrasonic signal of the piezoelectric ceramic sheet.
  • the piezoelectric ceramic body is sealed with a single-component epoxy resin in the blind hole.
  • the piezoelectric ceramic slices are arranged obliquely and/or horizontally.
  • the metal insert is arranged horizontally.
  • the piezoelectric ceramic body when the piezoelectric ceramic body is arranged horizontally, there are three metal inserts, the middle metal insert is arranged horizontally, and the metal inserts on both sides are arranged obliquely.
  • the metal insert on the side close to the inclined piezoelectric ceramic body is arranged horizontally, and the metal insert on the side close to the horizontal piezoelectric ceramic body is arranged Inclined arrangement.
  • the utility model has no opening and no sealing requirements between the watch body and the piezoelectric ceramic body, the watch body reduces the cost of opening processing for realizing the sealing function, and omits the sealing ring, the packaging shell of the ultrasonic sensor and the packaging process , Lock the connecting parts such as the screws of the ultrasonic sensor; also avoid the adverse consequences of sealing failure.
  • the piezoelectric ceramic chip is a piezoelectric component. This structure fixes it outside the meter body, does not touch the fluid, and is completely isolated from the high-pressure waterway. It is installed in the box together with the circuit board assembly without independent packaging.
  • the integrated flowmeter box protects the core device piezoelectric ceramic sheet while protecting the circuit board components, which reduces the cost of packaging and materials, reduces the number of parts, greatly reduces the cost of ultrasonic flowmeter products, saves man-hours, and reduces defects. probability.
  • Fig. 1 is the first implementation structure schematic diagram of the present utility model
  • Fig. 2 is the second implementation structure schematic diagram of the utility model
  • Fig. 3 is a schematic diagram of the third embodiment of the utility model.
  • this embodiment is provided with an injection molded watch body 1, a piezoelectric ceramic body 3, a box body 4 and a circuit board assembly, the injection molded watch body 1 and the box body 4 are integrally formed, and the box body 4 is connected to the injection molded watch body 1, it is used to provide protection for the circuit board assembly, and the circuit board assembly realizes the function of ultrasonic electronic measurement of flow velocity for the flowmeter.
  • the circuit board assembly includes functions such as liquid crystal display and flow calculation circuit.
  • the flow calculation circuit provides high-frequency pulse voltage to the piezoelectric ceramic body 3, and the electric energy is transformed into mechanical energy through the piezoelectric effect to generate ultrasonic waves; the ultrasonic waves carry the speed information of the water flow to the On the piezoelectric ceramic chip 3 at the other end; the ultrasonic mechanical energy received by the piezoelectric ceramic chip 3 is transformed into electrical energy through the piezoelectric effect to generate voltage; the circuit board component and its program pass the voltage to calculate the flow rate.
  • the circuit board assembly needs to work in a dry and confined space, and needs to be protected by the instrument box, completely isolated from the high-pressure waterway, and must have certain requirements for protection and isolation from the external environment.
  • the utility model protects the core device piezoelectric ceramic body 3 while protecting the circuit board assembly, reduces packaging and material costs, saves man-hours, and reduces the probability of failure.
  • the circuit board assembly and the piezoelectric ceramic body 3 are connected by enameled wire soldering, and since all soldering points are in the closed space of the box body 4, there is no need for separate packaging and protection.
  • the two ends of the box body 4 close to the side of the injection molded watch body 1 are respectively provided with a blind hole with an inclined bottom surface.
  • the bottom surfaces of the blind holes are inclined to face each other.
  • the component epoxy resin is installed near the injection molded body 1, and the inner tube of the injection molded body 1 is provided with a metal insert 2, and the metal insert 2 is located in the middle of the two piezoelectric ceramic sheets 3, and the metal insert 2 starts To reflect the role of transmitting ultrasonic waves.
  • the injection molded body 1 reduces the cost of opening processing for realizing the sealing function, and omits the sealing ring, the packaging shell of the ultrasonic sensor and the The packaging process, the screw for locking the ultrasonic sensor and other connecting parts; also avoids the adverse consequences of sealing failure.
  • Piezoelectric ceramic chip 3 is a piezoelectric component. This structure fixes it outside the injection molded body 1 without contact with fluid. It is installed in the box body 4 together with the circuit board assembly without independent packaging. Through the above structure, the utility model reduces the number of parts, saves installation man-hours, and greatly reduces the cost of ultrasonic flowmeter products.
  • Embodiment 2 As shown in Figure 2, the basic structure of this embodiment is similar to that of Embodiment 1. A blind hole with a horizontal bottom surface is respectively provided at the two ends of the box body 4 near the side of the injection molded watch body 1, and a blind hole is installed in the blind hole. Piezoelectric ceramic sheet body 3; three metal inserts 2 are provided in the inner tube of the injection molded body 1, the metal inserts 2 on both sides are arranged obliquely, and the middle metal insert 2 is arranged horizontally, forming a channel for reflecting and transmitting ultrasonic signals.
  • Embodiment 3 As shown in Figure 3, in this embodiment, a blind hole with a horizontal bottom surface and a blind hole with an inclined bottom surface are respectively provided at both ends of the box body 4 near the side of the injection molded watch body 1, and pressure Electric ceramic sheet body 3; three metal inserts 2 are arranged in the inner tube of injection molded body 1 in turn, two metal inserts 2 near the blind holes on the inclined bottom are arranged horizontally, and metal inserts 2 near the blind holes on the flat bottom are arranged obliquely, forming The reflection transmits the channel of the ultrasonic signal.

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  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Transducers For Ultrasonic Waves (AREA)

Abstract

L'invention concerne un débitmètre comprenant un capteur ultrasonique et un corps de débitmètre intégrés, résolvant les problèmes techniques d'un corps de débitmètre mécanique d'un débitmètre ultrasonique existant étant structurellement complexe et d'un coût élevé ; le présent débitmètre est pourvu d'un corps de débitmètre moulé par injection, de corps de plaque en céramique piézoélectrique, d'un corps de boîte et d'un ensemble de carte de circuit imprimé ; le corps de débitmètre moulé par injection et le corps de boîte sont formés intégralement ; le corps de boîte est pourvu d'une paire de trous borgnes ; les corps de plaque en céramique piézoélectrique sont installés dans les trous borgnes ; un tuyau interne du corps de débitmètre moulé par injection est pourvu d'un insert métallique, et l'insert métallique réfléchit les signaux d'ondes ultrasoniques des corps de plaque en céramique piézoélectrique. Le présent modèle d'utilité peut être largement utilisé dans le dosage de fluides.
PCT/CN2022/079121 2021-09-10 2022-03-03 Débitmètre avec capteur ultrasonique intégré et corps du débitmètre WO2023035562A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202122189146.3 2021-09-10
CN202122189146.3U CN215726163U (zh) 2021-09-10 2021-09-10 一种超声传感器与表体一体式流量计

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WO2023035562A1 true WO2023035562A1 (fr) 2023-03-16

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PCT/CN2022/079121 WO2023035562A1 (fr) 2021-09-10 2022-03-03 Débitmètre avec capteur ultrasonique intégré et corps du débitmètre

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CN (1) CN215726163U (fr)
WO (1) WO2023035562A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN215726163U (zh) * 2021-09-10 2022-02-01 威海市天罡仪表股份有限公司 一种超声传感器与表体一体式流量计
CN114413984A (zh) * 2022-03-31 2022-04-29 青岛鼎信通讯股份有限公司 超声波水表

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053193A1 (fr) * 2006-10-31 2008-05-08 Imi Vision Limited Dispositif et système de mesure de débit d'écoulement à ultrasons
WO2015000487A1 (fr) * 2013-07-02 2015-01-08 Kamstrup A/S Débitmètre à revêtement continu
CN110487341A (zh) * 2019-07-23 2019-11-22 广东美的白色家电技术创新中心有限公司 超声波流量计及其制造方法
CN211678637U (zh) * 2020-01-10 2020-10-16 青岛海威茨仪表有限公司 用于有内衬的超声波流量计的换能器
EP3800448A1 (fr) * 2019-10-02 2021-04-07 Huba Control Ag Débitmètre ultrasonique
CN215726163U (zh) * 2021-09-10 2022-02-01 威海市天罡仪表股份有限公司 一种超声传感器与表体一体式流量计

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008053193A1 (fr) * 2006-10-31 2008-05-08 Imi Vision Limited Dispositif et système de mesure de débit d'écoulement à ultrasons
WO2015000487A1 (fr) * 2013-07-02 2015-01-08 Kamstrup A/S Débitmètre à revêtement continu
CN110487341A (zh) * 2019-07-23 2019-11-22 广东美的白色家电技术创新中心有限公司 超声波流量计及其制造方法
EP3800448A1 (fr) * 2019-10-02 2021-04-07 Huba Control Ag Débitmètre ultrasonique
CN211678637U (zh) * 2020-01-10 2020-10-16 青岛海威茨仪表有限公司 用于有内衬的超声波流量计的换能器
CN215726163U (zh) * 2021-09-10 2022-02-01 威海市天罡仪表股份有限公司 一种超声传感器与表体一体式流量计

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