WO2023035562A1 - Flow meter having integrated ultrasonic sensor and meter body - Google Patents
Flow meter having integrated ultrasonic sensor and meter body Download PDFInfo
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- 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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- piezoelectric ceramic
- meter
- ultrasonic sensor
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- meter body
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- 239000000919 ceramic Substances 0.000 claims abstract description 39
- 239000002184 metal Substances 0.000 claims abstract description 30
- 238000002347 injection Methods 0.000 claims abstract description 22
- 239000007924 injection Substances 0.000 claims abstract description 22
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 description 10
- 238000004806 packaging method and process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012858 packaging process Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
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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
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- 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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- General Physics & Mathematics (AREA)
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- Transducers For Ultrasonic Waves (AREA)
Abstract
The present utility model relates to a flow meter having an integrated ultrasonic sensor and meter body, which solves the technical problems of a mechanical meter body of an existing ultrasonic flow meter being structurally complex and high in cost; the present flow meter is provided with an injection molded meter body, piezoelectric ceramic plate bodies, a box body, and a circuit board assembly; the injection molded meter body and the box body are integrally formed; the box body is provided with a pair of blind holes; the piezoelectric ceramic plate bodies are installed within the blind holes; an internal pipe of the injection molded meter body is provided with a metal insert, and the metal insert reflects ultrasonic wave signals of the piezoelectric ceramic plate bodies. The present utility model can be widely used in metering fluids.
Description
本实用新型涉及流量计量领域，特别是涉及一种超声传感器与表体一体式流量计。The utility model relates to the field of flow measurement, in particular to an integrated flowmeter of an ultrasonic sensor and a meter body.
众所周知，超声流量计是基于超声波在液体中传播的过程中声速叠加液体流速信息，电子部件识别流速信息从而计算出流量的原理。As we all know, 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.
结构方面超声流量计包含表体、超声传感器、线路板组件和盒体等主要部分，表体常见为金属材质，设置超声传感器安装孔及密封结构；超声传感器有独立的封装结构，接触计量流体的部分用防水结构；盒体起到保护线路板组件的作用，要求一定的外壳防护等级，但超声传感器的线缆要与线路板组件连接，盒体对线缆也要有一定走线孔的防护和密封设计，以上是超声流量计最基础的组成部分。In terms of structure, 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. And sealing design, the above are the most basic components of the ultrasonic flowmeter.
随着超声流量计在水务、供热等民生设施中的应用，相比机械表体成本方面，由于上述复杂的结构成为阻碍超声流量计进一步优化成本的桎梏。With the application of ultrasonic flowmeters in water, heating and other livelihood facilities, compared with the cost of mechanical meters, the above-mentioned complex structure has become a shackle that hinders further cost optimization of ultrasonic flowmeters.
发明内容Contents of the invention
本实用新型为了解决现有超声流量计机械表体结构复杂，成本高的技术问题，提供一种结构简单的超声传感器与表体一体式流量计。In order to solve the technical problems of complex structure and high cost of the mechanical meter body of the existing ultrasonic flowmeter, the utility model provides an integrated flowmeter of an ultrasonic sensor and a meter body with a simple structure.
本实用新型提供一种超声传感器与表体一体式流量计，设有注塑表体、压电陶瓷片体、盒体与线路板组件,注塑表体与盒体一体成型，盒体设有一对盲孔，盲孔内装设压电陶瓷片体，注塑表体内管设有金属嵌件，金属嵌件反射压电陶瓷片体的超声波信号。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.
优选地，压电陶瓷片体在盲孔内采用单组分环氧树脂密封。Preferably, the piezoelectric ceramic body is sealed with a single-component epoxy resin in the blind hole.
优选地，压电陶瓷片体倾斜和/或水平布置。Preferably, the piezoelectric ceramic slices are arranged obliquely and/or horizontally.
优选地，压电陶瓷片体倾斜布置时，金属嵌件水平布置。Preferably, when the piezoelectric ceramic body is arranged obliquely, the metal insert is arranged horizontally.
优选地，压电陶瓷片体水平布置时，金属嵌件设有三件，中间金属嵌件水平布置，两侧金属嵌件倾斜布置。Preferably, 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.
优选地，压电陶瓷片体倾斜和水平布置时，金属嵌件设有三件，靠近倾斜布置压电陶瓷 片体一侧金属嵌件水平布置，靠近水平布置压电陶瓷片体一侧金属嵌件倾斜布置。Preferably, when the piezoelectric ceramic body is arranged obliquely and horizontally, there are three metal inserts, 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.
本实用新型的有益效果是：The beneficial effects of the utility model are:
本实用新型表体与压电陶瓷片体之间无开孔、无密封要求，表体减少了为实现密封功能而进行的开孔加工费用，省略了密封圈、超声传感器的封装外壳与封装工序、锁定超声传感器的螺钉等连接部件；也避免了密封失效的不良后果。压电陶瓷片体是一种压电元器件，本结构将其固定在表体外部，不接触流体，完全与高压的水路隔绝，与线路板组件一起安装在盒体内，无需独立的封装。一体流量计盒体在保护线路板组件的同时保护了核心器件压电陶瓷片，降低了封装与物料成本，减少的零件数量，大大降低的超声波流量计产品的成本，节约了工时，降低了不良概率。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.
图1是本实用新型的第一种实施结构示意图；Fig. 1 is the first implementation structure schematic diagram of the present utility model;
图2是本实用新型的第二种实施结构示意图；Fig. 2 is the second implementation structure schematic diagram of the utility model;
图3是本实用新型的第三种实施结构示意图。Fig. 3 is a schematic diagram of the third embodiment of the utility model.
附图标记：1.注塑表体；2.金属嵌件；3.压电陶瓷片体；4.盒体。Reference signs: 1. Injection molded watch body; 2. Metal insert; 3. Piezoelectric ceramic sheet body; 4. Box body.
下面结合附图和实施例对本实用新型做进一步说明，以使本实用新型所属技术领域的技术人员能够容易实施本实用新型。The utility model will be further described below in conjunction with the accompanying drawings and embodiments, so that those skilled in the art to which the utility model belongs can easily implement the utility model.
实施例：Example:
如图1所示，本实施例设有注塑表体1、压电陶瓷片体3、盒体4与线路板组件，注塑表体1与盒体4一体成型，盒体4连接在注塑表体1上，用于给线路板组件提供防护，线路板组件为流量计实现超声波电子测量流速的功能。线路板组件包含液晶显示与流量计算电路等功能，流量计算电路给压电陶瓷片体3提供高频脉冲电压，通过压电效应电能变为机械能，产生超声波；超声波携带了水流的速度信息传递到另一端的压电陶瓷片体3上；压电陶瓷片体3接收的超声波机械能，通过压电效应机械能变为电能，产生电压；线路板组件与其程序通过电压，计算出流量。As shown in Figure 1, 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.
线路板组件需要在干燥、密闭的空间工作，需要仪表盒体保护，完全与高压的水路隔绝，并要与外界环境有一定要求的防护隔离。本实用新型在保护线路板组件的同时保护了核心器件 压电陶瓷片体3，降低了封装与物料成本，节约了工时，降低了不良概率。线路板组件与压电陶瓷片体3通过漆包线焊锡连接，所有焊锡焊点由于都在盒体4的封闭空间内，无需单独封装，防护。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.
盒体4靠近注塑表体1一侧的两端分别设有一个底面倾斜的盲孔，盲孔底面倾斜相对，盲孔底部装设有压电陶瓷片体3，压电陶瓷片体3使用单组分环氧树脂安装在靠近注塑表体1位置处，注塑表体1内管设有一件金属嵌件2，金属嵌件2位于两片压电陶瓷片体3中间位置，金属嵌件2起到反射传递超声波的作用。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.
注塑表体1与压电陶瓷片体3之间无开孔、无密封要求，注塑表体1减少了为实现密封功能而进行的开孔加工费用，省略了密封圈、超声传感器的封装外壳与封装工序、锁定超声传感器的螺钉等连接部件；也避免了密封失效的不良后果。压电陶瓷片体3是一种压电元器件，本结构将其固定在注塑表体1外部，不接触流体，与线路板组件一起安装在盒体4内，无需独立的封装。本实用新型通过以上结构，减少的零件数量，节约了安装工时，大大降低的超声波流量计产品的成本。There are no openings and no sealing requirements between the injection molded body 1 and the piezoelectric ceramic body 3. 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.
实施例2：如图2所示，本实施例与实施例1基本结构类似，其在盒体4靠近注塑表体1一侧的两端分别设有一个底面水平的盲孔，盲孔内安装压电陶瓷片体3；注塑表体1内管设有三件金属嵌件2，两边的金属嵌件2倾斜布置，中间金属嵌件2水平布置，构成反射传递超声波信号的通道。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.
实施例3：如图3所示，本实施例在盒体4靠近注塑表体1一侧的两端分别设有一个底面水平的盲孔和一个底面倾斜的盲孔，盲孔内分别安装压电陶瓷片体3；注塑表体1内管依次设有三件金属嵌件2，靠近倾斜底面盲孔的两件金属嵌件2水平布置，靠近平坦底面盲孔的金属嵌件2倾斜布置，构成反射传递超声波信号的通道。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.
Claims (6)
- 一种超声传感器与表体一体式流量计，其特征是，设有注塑表体、压电陶瓷片体、盒体与线路板组件,所述注塑表体与盒体一体成型，所述盒体设有一对盲孔，所述盲孔内装设所述压电陶瓷片体，所述注塑表体内管设有金属嵌件，所述金属嵌件反射所述压电陶瓷片体的超声波信号，所述压电陶瓷片体与所述线路板组件连接。An ultrasonic sensor and meter body integrated flowmeter is characterized in that it is provided with an injection molded meter body, a piezoelectric ceramic 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 A pair of blind holes are provided, and the piezoelectric ceramic sheet is installed in the blind hole, and the inner tube of the injection molding watch is provided with a metal insert, and the metal insert reflects the ultrasonic signal of the piezoelectric ceramic sheet, so The piezoelectric ceramic body is connected with the circuit board assembly.
- 根据权利要求1所述超声传感器与表体一体式流量计，其特征在于，所述压电陶瓷片体在所述盲孔内采用单组分环氧树脂密封。According to claim 1, the ultrasonic sensor and meter body integrated flowmeter is characterized in that, the piezoelectric ceramic body is sealed with a single-component epoxy resin in the blind hole.
- 根据权利要求2所述超声传感器与表体一体式流量计，其特征在于，所述压电陶瓷片体倾斜和/或水平布置。According to the ultrasonic sensor and meter body integrated flowmeter according to claim 2, it is characterized in that the piezoelectric ceramic body is arranged obliquely and/or horizontally.
- 根据权利要求3所述超声传感器与表体一体式流量计，其特征在于，所述压电陶瓷片体倾斜布置时，所述金属嵌件水平布置。According to claim 3, the ultrasonic sensor and meter body integrated flowmeter is characterized in that, when the piezoelectric ceramic body is arranged obliquely, the metal insert is arranged horizontally.
- 根据权利要求3所述超声传感器与表体一体式流量计，其特征在于，所述压电陶瓷片体水平布置时，所述金属嵌件设有三件，中间金属嵌件水平布置，两侧金属嵌件倾斜布置。According to claim 3, the ultrasonic sensor and meter body integrated flowmeter is characterized in that, 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 horizontally. The inserts are arranged obliquely.
- 根据权利要求3所述超声传感器与表体一体式流量计，其特征在于，所述压电陶瓷片体倾斜和水平布置时，所述金属嵌件设有三件，靠近倾斜布置压电陶瓷片体一侧金属嵌件水平布置，靠近水平布置压电陶瓷片体一侧金属嵌件倾斜布置。According to claim 3, the ultrasonic sensor and meter body integrated flowmeter is characterized in that, when the piezoelectric ceramic body is arranged obliquely and horizontally, the metal insert is provided with three pieces, and the piezoelectric ceramic body is arranged close to the inclined body The metal insert on one side is arranged horizontally, and the metal insert on the side close to the horizontally arranged piezoelectric ceramic body is arranged obliquely.
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| CN202122189146.3 | 2021-09-10 |
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| CN114413984A (en) * | 2022-03-31 | 2022-04-29 | 青岛鼎信通讯股份有限公司 | Ultrasonic water meter |
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- 2021-09-10 CN CN202122189146.3U patent/CN215726163U/en active Active
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| WO2008053193A1 (en) * | 2006-10-31 | 2008-05-08 | Imi Vision Limited | Ultrasonic flow-rate measurement device and system |
| WO2015000487A1 (en) * | 2013-07-02 | 2015-01-08 | Kamstrup A/S | Flow meter with unbroken liner |
| CN110487341A (en) * | 2019-07-23 | 2019-11-22 | 广东美的白色家电技术创新中心有限公司 | Ultrasonic flowmeter and its manufacturing method |
| EP3800448A1 (en) * | 2019-10-02 | 2021-04-07 | Huba Control Ag | Ultrasonic flow meter |
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