CN206321285U - The ultrasonic water meter that a kind of high precision low pressure is damaged - Google Patents
The ultrasonic water meter that a kind of high precision low pressure is damaged Download PDFInfo
- Publication number
- CN206321285U CN206321285U CN201621472775.XU CN201621472775U CN206321285U CN 206321285 U CN206321285 U CN 206321285U CN 201621472775 U CN201621472775 U CN 201621472775U CN 206321285 U CN206321285 U CN 206321285U
- Authority
- CN
- China
- Prior art keywords
- transducer
- water meter
- installation
- pipe body
- grid
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 238000009434 installation Methods 0.000 claims abstract description 76
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims description 16
- 238000012545 processing Methods 0.000 claims description 6
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 5
- 238000013480 data collection Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 2
- 230000006641 stabilisation Effects 0.000 abstract 3
- 238000011105 stabilization Methods 0.000 abstract 3
- 238000011144 upstream manufacturing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Measuring Volume Flow (AREA)
Abstract
本实用新型提供一种高精度低压损的超声波水表，包括换能器安装管体，换能器，端盖、主板模块、表盖和稳流栅；换能器安装管体的两端带有喇叭形缩颈；换能器安装管体入水口处设有稳流栅，稳流栅的稳流片沿所述喇叭形缩颈的内径圆周均布，所述喇叭形缩颈的最大内径为水表的公称直径。本实用新型的换能器安装管体采用了缩颈设计，并在流体入口处设置有稳流栅，缩颈后的水表降低了流体通过直径，稳流栅的稳流片能够引导流体流向，使流体流速提高，流动更加规律，便于超声波水表测量。
The utility model provides an ultrasonic water meter with high precision and low pressure loss, which includes a transducer installation pipe body, a transducer, an end cover, a main board module, a table cover and a steady flow grid; the two ends of the transducer installation pipe body have Trumpet-shaped constriction; the water inlet of the transducer installation pipe body is provided with a stabilizing grid, and the stabilizing plates of the stabilizing grid are evenly distributed along the inner diameter circumference of the horn-shaped necking, and the maximum inner diameter of the horn-shaped necking is The nominal diameter of the water meter. The transducer installation pipe body of the utility model adopts a necking design, and a flow stabilization grid is arranged at the fluid inlet. The water meter after the necking reduces the diameter of the fluid passing, and the flow stabilization sheet of the flow stabilization grid can guide the fluid flow direction. The fluid flow rate is increased, the flow is more regular, and it is convenient for ultrasonic water meter measurement.
Description
技术领域technical field
本实用新型涉及一种超声波水表，特别是一种提高精度的超声波水表。The utility model relates to an ultrasonic water meter, in particular to an ultrasonic water meter with improved precision.
背景技术Background technique
目前机械式水表是通过水带动叶轮的旋转，联动齿轮旋转计量水量。压力损失较大。超声波水表是通过检测超声波声束在同等距离时，由于水的顺流和逆流使传播速度产生的变化而产生的时差，分析处理得出水的流速从而进一步计算出水的流量的一种新式水表。内部无活动部件无阻流元件，无压力损失。水在管体内的流动稳定性低，对超声波束的传播易产生干扰，影响测量。At present, the mechanical water meter uses water to drive the rotation of the impeller, and the linkage gear rotates to measure the water volume. The pressure loss is large. Ultrasonic water meter is a new type of water meter that can further calculate the flow rate of water by detecting the time difference caused by the change of propagation velocity caused by the forward and backward flow of water when the ultrasonic sound beam is at the same distance, and analyzing and processing the flow velocity of water. There are no moving parts inside, no flow blocking elements, and no pressure loss. The flow stability of water in the tube body is low, and it is easy to interfere with the propagation of the ultrasonic beam and affect the measurement.
发明内容Contents of the invention
本实用新型为了解决以上问题，提供一种高精度低压损的超声波水表，使超声波水表在压力损失为最低等级△p10，并提高测量精度。In order to solve the above problems, the utility model provides an ultrasonic water meter with high precision and low pressure loss, so that the pressure loss of the ultrasonic water meter is the lowest level △p10, and the measurement accuracy is improved.
本实用新型解决关键技术问题的技术方案是：一种高精度低压损的超声波水表，包括换能器安装管体，换能器，端盖、主板模块、表盖和稳流栅；The technical solution of the utility model to solve the key technical problems is: a high-precision low-pressure-loss ultrasonic water meter, including a transducer installation tube, a transducer, an end cover, a main board module, a meter cover and a steady flow grid;
所述换能器安装管体的中部垂直地设有主板安装仓，所述换能器安装管体的两端带有喇叭形缩颈；The middle part of the transducer installation pipe body is vertically provided with a mainboard installation chamber, and both ends of the transducer installation pipe body are provided with horn-shaped constrictions;
所述换能器安装管体的内部与其轴线相交、斜向对称地设有2对换能器的安装台，所述换能器安装台上设有安装孔，所述换能器通过螺纹压垫和O型圈密封固定在安装孔内，所述安装孔的最外端由所述端盖密封；The interior of the transducer installation pipe body intersects with its axis, and two pairs of transducer installation platforms are arranged obliquely and symmetrically. The transducer installation platforms are provided with installation holes, and the transducers are pressed by threads. The gasket and the O-ring are sealed and fixed in the mounting hole, and the outermost end of the mounting hole is sealed by the end cover;
所述换能器安装台上设有穿线孔连通到主板安装仓，换能器信号线通过穿线孔接入主板安装仓；所述主板安装仓为由底壳、表盖形成的密封空间，所述表盖密封固定在所述底壳上端，内部设有主板模块，用于数据的采集和运算处理；The transducer installation platform is provided with a threading hole connected to the mainboard installation compartment, and the transducer signal line is connected to the mainboard installation compartment through the threading hole; the mainboard installation compartment is a sealed space formed by a bottom case and a cover, so The meter cover is sealed and fixed on the upper end of the bottom case, and a motherboard module is arranged inside for data collection and calculation processing;
所述换能器安装管体的入水口处设有稳流栅，稳流栅具有6—8片稳流片，稳流片的纵向的截面为流线型，稳流片沿所述喇叭形缩颈的内径圆周均布。The water inlet of the transducer installation pipe body is provided with a stabilizing grid, and the stabilizing grid has 6-8 stabilizing plates, the longitudinal section of the stabilizing plates is streamlined, and the stabilizing plates are necked along the horn shape The inner diameter of the circumference is evenly distributed.
进一步地，所述换能器安装管体的材质为球磨铸铁，长度为国家标准长度。Further, the material of the transducer installation pipe body is ductile iron, and the length is the national standard length.
进一步地，所述主板安装仓为由底壳、表盖形成的密封空间，所述表盖密封固定在所述底壳上端；所述底壳内自下而上依次设置电池、主板模块和缓冲平垫，所述底壳内还设有与所述主板模块相适应的密封台，所述密封台上设有密封平垫。Further, the main board installation compartment is a sealed space formed by a bottom case and a watch cover, and the watch cover is sealed and fixed on the upper end of the bottom case; a battery, a main board module and a buffer are sequentially arranged in the bottom case from bottom to top. A flat gasket, a sealing platform suitable for the motherboard module is also provided in the bottom case, and a sealing flat gasket is arranged on the sealing platform.
进一步地，所述稳流栅的内端距换能器信号发射面的距离为25—40mm，更进一步优选为30mm；Further, the distance between the inner end of the current stabilizing grid and the signal transmitting surface of the transducer is 25-40mm, more preferably 30mm;
进一步地，所述喇叭形缩颈的最大内径为水表的公称直径，最小内径/最大内径=0.75—0.85，比值进一步优选为0.8。Further, the maximum inner diameter of the trumpet-shaped constriction is the nominal diameter of the water meter, the minimum inner diameter/maximum inner diameter=0.75-0.85, and the ratio is more preferably 0.8.
本实用新型工作时：正视超声波水表，水流从超声波水表的左侧流入，与换能器安装管体上标注的箭头方向相同，两对换能器分别位于水流的上游和下游，当水流动时，上游的换能器发出超声波，被下游换能器接收到后，下游换能器发出超声波，被上游换能器接收，由于上游换能器发射超声波是顺流方向，下游换能器发射超声波是逆流方向，水的流动使超声波传播时间发生微小变化，传播时间的变化正比于液体的流速，零流量时，两对传感器相互发射和接收声波所需的时间完全相同，液体流动时，逆流方向的声波传输时间大于顺流方向的声波传输时间。When the utility model is working: when facing the ultrasonic water meter, the water flows in from the left side of the ultrasonic water meter, which is in the same direction as the arrow marked on the transducer installation pipe body, and the two pairs of transducers are respectively located upstream and downstream of the water flow. , the upstream transducer emits ultrasonic waves, and after being received by the downstream transducer, the downstream transducer emits ultrasonic waves, which are received by the upstream transducer. Since the upstream transducer emits ultrasonic waves in the downstream direction, the downstream transducer emits ultrasonic waves It is the countercurrent direction. The flow of water makes the propagation time of the ultrasonic wave slightly change. The change of the propagation time is proportional to the flow velocity of the liquid. When the flow rate is zero, the time required for the two pairs of sensors to transmit and receive sound waves is exactly the same. When the liquid flows, the countercurrent direction The sound wave transit time in the flow direction is longer than the sound wave transit time in the downstream direction.
有益效果：由于换能器安装管体采用了缩颈的设计方案，缩颈后的水表降低了流体通过时的直径，并在流体入口处设置有稳流栅，稳流栅中的稳流片能够引导流体流向，使流体流速提高，流动更加规律，便于超声波水表测量；并且缩小了内径的水表，与直通管体的水表相比，水在管体中的雷诺系数降低，雷诺数较小时，粘滞力对流场的影响大于惯性，流场中流速的扰动会因粘滞力而衰减，流体流动稳定，更利于超声波水表的测量。Beneficial effects: Since the transducer installation pipe body adopts a necking design scheme, the water meter after the necking reduces the diameter when the fluid passes through, and a stabilizing grid is arranged at the fluid inlet, and the stabilizing plate in the stabilizing grid It can guide the flow direction of the fluid, increase the fluid flow rate, and make the flow more regular, which is convenient for ultrasonic water meter measurement; and the water meter with reduced inner diameter, compared with the water meter straight through the pipe body, the Reynolds coefficient of water in the pipe body is reduced. When the Reynolds number is small, The influence of viscous force on the flow field is greater than that of inertia. The disturbance of the flow velocity in the flow field will be attenuated by the viscous force, and the fluid flow is stable, which is more conducive to the measurement of ultrasonic water meters.
附图说明Description of drawings
图1是本实用新型的整体示意图；Fig. 1 is the overall schematic diagram of the utility model;
图2是本实用新型的整体剖视图；Fig. 2 is the overall sectional view of the utility model;
图3是本实用新型的又一剖视图；Fig. 3 is another sectional view of the utility model;
图4 是本实用新型主板安装仓结构示意图；Fig. 4 is a schematic diagram of the structure of the main board installation compartment of the present invention;
其中，1、换能器安装管体；2、表盖；3、稳流栅；4、电池；5、主板模块；6、换能器；7、端盖；8、密封平垫；9缓冲平垫。Among them, 1. Transducer installation tube body; 2. Table cover; 3. Steady flow grid; 4. Battery; 5. Main board module; 6. Transducer; 7. End cover; 8. Sealing flat gasket; Flat pad.
具体实施方式detailed description
实施例1Example 1
一种高精度低压损的超声波水表，包括换能器安装管体1，换能器6，端盖7、主板模块5、表盖2和稳流栅3；An ultrasonic water meter with high precision and low pressure loss, comprising a transducer installation pipe body 1, a transducer 6, an end cover 7, a main board module 5, a meter cover 2 and a flow grid 3;
所述换能器安装管体1的中部垂直地设有主板安装仓，所述换能器安装管体1的两端带有喇叭形缩颈；The middle part of the transducer installation pipe body 1 is vertically provided with a main board installation chamber, and the two ends of the transducer installation pipe body 1 have horn-shaped constrictions;
所述换能器安装管体1的内部与其轴线相交、斜向对称地设有2对换能器的安装台，所述换能器安装台上设有安装孔，所述换能器6通过螺纹压垫和O型圈密封固定在安装孔内，所述安装孔的最外端由所述端盖7密封；The interior of the transducer installation tube body 1 intersects with its axis, and two pairs of transducer installation platforms are arranged obliquely symmetrically. The transducer installation platform is provided with installation holes, and the transducer 6 passes through The threaded pressure pad and the O-ring are sealed and fixed in the mounting hole, and the outermost end of the mounting hole is sealed by the end cover 7;
所述换能器安装台上设有穿线孔连通到主板安装仓，换能器信号线通过穿线孔接入主板安装仓；所述主板安装仓为由底壳、表盖形成的密封空间，所述表盖2密封固定在所述底壳上端，内部设有主板模块5，用于数据的采集和运算处理；The transducer installation platform is provided with a threading hole connected to the mainboard installation compartment, and the transducer signal line is connected to the mainboard installation compartment through the threading hole; the mainboard installation compartment is a sealed space formed by a bottom case and a cover, so The meter cover 2 is sealed and fixed on the upper end of the bottom case, and a motherboard module 5 is arranged inside for data collection and calculation processing;
所述换能器安装管体的入水口处设有稳流栅，稳流栅3具有6片稳流片，稳流片的纵向的截面为流线型，稳流片沿所述喇叭形缩颈内径圆周均布。The water inlet of the transducer installation pipe body is provided with a stabilizing grid, and the stabilizing grid 3 has 6 stabilizing plates. Evenly distributed around the circumference.
所述换能器安装管体1的材质为球磨铸铁，长度为200mm。The transducer mounting pipe body 1 is made of ductile cast iron and has a length of 200 mm.
所述主板安装仓为由底壳、表盖2形成的密封空间，所述表盖2密封固定在所述底壳上端；所述底壳内自下而上依次设置电池、主板模块5和缓冲平垫9，所述底壳内还设有与所述主板模块5相适应的密封台，所述密封台上设有密封平垫8。The main board installation compartment is a sealed space formed by a bottom case and a watch cover 2, and the watch cover 2 is sealed and fixed on the upper end of the bottom case; a battery, a main board module 5 and a buffer are sequentially arranged in the bottom case from bottom to top. A flat gasket 9, a sealing platform compatible with the mainboard module 5 is also provided in the bottom case, and a sealing flat gasket 8 is arranged on the sealing platform.
所述稳流栅3的内端距换能器信号发射面的距离为25mm；The distance between the inner end of the stabilizing grid 3 and the signal transmitting surface of the transducer is 25mm;
所述喇叭形缩颈的最大内径为水表的公称直径，最小内径/最大内径=0.75。The maximum inner diameter of the trumpet-shaped constriction is the nominal diameter of the water meter, and the minimum inner diameter/maximum inner diameter=0.75.
实施例2Example 2
一种高精度低压损的超声波水表，包括换能器安装管体1，换能器6，端盖7、主板模块5、表盖2和稳流栅3；An ultrasonic water meter with high precision and low pressure loss, comprising a transducer installation pipe body 1, a transducer 6, an end cover 7, a main board module 5, a meter cover 2 and a flow grid 3;
所述换能器安装管体1的中部垂直地设有主板安装仓，所述换能器安装管体1的两端带有喇叭形缩颈；The middle part of the transducer installation pipe body 1 is vertically provided with a main board installation chamber, and the two ends of the transducer installation pipe body 1 have horn-shaped constrictions;
所述换能器安装管体1的内部与其轴线相交、斜向对称地设有2对换能器的安装台，所述换能器安装台上设有安装孔，所述换能器6通过螺纹压垫和O型圈密封固定在安装孔内，所述安装孔的最外端由所述端盖7密封；The interior of the transducer installation tube body 1 intersects with its axis, and two pairs of transducer installation platforms are arranged obliquely symmetrically. The transducer installation platform is provided with installation holes, and the transducer 6 passes through The threaded pressure pad and the O-ring are sealed and fixed in the mounting hole, and the outermost end of the mounting hole is sealed by the end cover 7;
所述换能器安装台上设有穿线孔连通到主板安装仓，换能器信号线通过穿线孔接入主板安装仓；所述主板安装仓为由底壳、表盖形成的密封空间，所述表盖2密封固定在所述底壳上端，内部设有主板模块5，用于数据的采集和运算处理；The transducer installation platform is provided with a threading hole connected to the mainboard installation compartment, and the transducer signal line is connected to the mainboard installation compartment through the threading hole; the mainboard installation compartment is a sealed space formed by a bottom case and a cover, so The meter cover 2 is sealed and fixed on the upper end of the bottom case, and a motherboard module 5 is arranged inside for data collection and calculation processing;
所述换能器安装管体的入水口处设有稳流栅，稳流栅3具有8片稳流片，稳流片的纵向的截面为流线型，稳流片沿所述喇叭形缩颈内径圆周均布。The water inlet of the transducer installation pipe body is provided with a stabilizing grid, and the stabilizing grid 3 has 8 stabilizing plates. Evenly distributed around the circumference.
所述换能器安装管体1的材质为球磨铸铁，长度为500mm。The transducer mounting pipe body 1 is made of ductile cast iron and has a length of 500mm.
所述主板安装仓为由底壳、表盖2形成的密封空间，所述表盖2密封固定在所述底壳上端；所述底壳内自下而上依次设置电池、主板模块5和缓冲平垫9，所述底壳内还设有与所述主板模块5相适应的密封台，所述密封台上设有密封平垫8。The main board installation compartment is a sealed space formed by a bottom case and a watch cover 2, and the watch cover 2 is sealed and fixed on the upper end of the bottom case; a battery, a main board module 5 and a buffer are sequentially arranged in the bottom case from bottom to top. A flat gasket 9, a sealing platform compatible with the mainboard module 5 is also provided in the bottom case, and a sealing flat gasket 8 is arranged on the sealing platform.
所述稳流栅3的内端距换能器信号发射面的距离为40mm；The distance between the inner end of the stabilizing grid 3 and the signal transmitting surface of the transducer is 40mm;
所述喇叭形缩颈的最大内径为水表的公称直径，最小内径/最大内径=0.85。The maximum inner diameter of the trumpet-shaped constriction is the nominal diameter of the water meter, and the minimum inner diameter/maximum inner diameter=0.85.
实施例2Example 2
一种高精度低压损的超声波水表，包括换能器安装管体1，换能器6，端盖7、主板模块5、表盖2和稳流栅3；An ultrasonic water meter with high precision and low pressure loss, comprising a transducer installation pipe body 1, a transducer 6, an end cover 7, a main board module 5, a meter cover 2 and a flow grid 3;
所述换能器安装管体1的中部垂直地设有主板安装仓，所述换能器安装管体1的两端带有喇叭形缩颈；The middle part of the transducer installation pipe body 1 is vertically provided with a main board installation chamber, and the two ends of the transducer installation pipe body 1 have horn-shaped constrictions;
所述换能器安装管体1的内部与其轴线相交、斜向对称地设有2对换能器的安装台，所述换能器安装台上设有安装孔，所述换能器6通过螺纹压垫和O型圈密封固定在安装孔内，所述安装孔的最外端由所述端盖7密封；The interior of the transducer installation tube body 1 intersects with its axis, and two pairs of transducer installation platforms are arranged obliquely symmetrically. The transducer installation platform is provided with installation holes, and the transducer 6 passes through The threaded pressure pad and the O-ring are sealed and fixed in the mounting hole, and the outermost end of the mounting hole is sealed by the end cover 7;
所述换能器安装台上设有穿线孔连通到主板安装仓，换能器信号线通过穿线孔接入主板安装仓；所述主板安装仓为由底壳、表盖形成的密封空间，所述表盖2密封固定在所述底壳上端，内部设有主板模块5，用于数据的采集和运算处理；The transducer installation platform is provided with a threading hole connected to the mainboard installation compartment, and the transducer signal line is connected to the mainboard installation compartment through the threading hole; the mainboard installation compartment is a sealed space formed by a bottom case and a cover, so The meter cover 2 is sealed and fixed on the upper end of the bottom case, and a motherboard module 5 is arranged inside for data collection and calculation processing;
所述换能器安装管体的入水口处设有稳流栅，稳流栅3具有8片稳流片，稳流片的纵向的截面为流线型，稳流片沿所述喇叭形缩颈内径圆周均布。The water inlet of the transducer installation pipe body is provided with a stabilizing grid, and the stabilizing grid 3 has 8 stabilizing plates. Evenly distributed around the circumference.
所述换能器安装管体1的材质为球磨铸铁，长度为300mm。The transducer mounting pipe body 1 is made of ductile cast iron and has a length of 300 mm.
所述主板安装仓为由底壳、表盖2形成的密封空间，所述表盖2密封固定在所述底壳上端；所述底壳内自下而上依次设置电池、主板模块5和缓冲平垫，所述底壳内还设有与所述主板模块5相适应的密封台，所述密封台上设有密封平垫。The main board installation compartment is a sealed space formed by a bottom case and a watch cover 2, and the watch cover 2 is sealed and fixed on the upper end of the bottom case; a battery, a main board module 5 and a buffer are sequentially arranged in the bottom case from bottom to top. A flat gasket, a sealing platform suitable for the main board module 5 is also provided in the bottom case, and a sealing flat gasket is arranged on the sealing platform.
所述稳流栅3的内端距换能器信号发射面的距离为30mm；The distance between the inner end of the stabilizing grid 3 and the signal transmitting surface of the transducer is 30mm;
所述喇叭形缩颈的最大内径为水表的公称直径，最小内径/最大内径= 0.8。The maximum inner diameter of the trumpet-shaped constriction is the nominal diameter of the water meter, and the minimum internal diameter/maximum internal diameter = 0.8.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621472775.XU CN206321285U (en) | 2016-12-30 | 2016-12-30 | The ultrasonic water meter that a kind of high precision low pressure is damaged |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621472775.XU CN206321285U (en) | 2016-12-30 | 2016-12-30 | The ultrasonic water meter that a kind of high precision low pressure is damaged |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206321285U true CN206321285U (en) | 2017-07-11 |
Family
ID=59260518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621472775.XU Expired - Fee Related CN206321285U (en) | 2016-12-30 | 2016-12-30 | The ultrasonic water meter that a kind of high precision low pressure is damaged |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206321285U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702181A (en) * | 2019-11-13 | 2020-01-17 | 怀化建南电子科技有限公司 | Waterproof resistance to compression type ultrasonic water meter |
-
2016
- 2016-12-30 CN CN201621472775.XU patent/CN206321285U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110702181A (en) * | 2019-11-13 | 2020-01-17 | 怀化建南电子科技有限公司 | Waterproof resistance to compression type ultrasonic water meter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101576399B (en) | Flow sensor of ultrasonic water meter and heat meter | |
| SU753367A3 (en) | Device for measuring volumetric flow rate in cylindrical pipe-line | |
| AU2016359473B2 (en) | Flow measurement insert | |
| CN105157771B (en) | A kind of transit-time ultrasonic flow measuring method and device | |
| CN206930321U (en) | Non-full pipe ultrasonic flowmeter | |
| WO2018068764A1 (en) | Large-diameter ultrasonic flow meter | |
| CN103383275B (en) | Square-wave runner ultrasonic water gauge | |
| CN206321285U (en) | The ultrasonic water meter that a kind of high precision low pressure is damaged | |
| CN109324208A (en) | An integrated analyzer for vapor-liquid two-phase flow density, mass flow and phase holdup based on ultrasonic sound velocity method | |
| CN203657862U (en) | Flow dividing main body of Coriolis mass flow meter | |
| CN202614634U (en) | Absorption tower slurry density measuring device | |
| CN209745338U (en) | Measuring tube for ultrasonic water meter | |
| CN204405124U (en) | A kind of ultrasonic wave gas flowmeter | |
| RU2351900C2 (en) | Rate-of-flow indicator of liquid mediums in pipelines | |
| CN202024839U (en) | Sensor of ultrasonic heat meter | |
| CN206321282U (en) | A kind of parallel Eight-channel ultrasonic flowmeter sensor | |
| WO2023197457A1 (en) | Small-flow ultrasonic water meter | |
| CN204085597U (en) | A kind of Pitot bar mass flowmeter | |
| CN203489926U (en) | Ultrasonic flow meter | |
| CN206387461U (en) | A kind of Ultrasonic water meter shell with unilateral double check valve (DCV) structure | |
| CN104280076A (en) | A High Precision Large Diameter Vortex Flowmeter | |
| CN218469945U (en) | Double-channel reducing ultrasonic water meter shell with sound channel of 45 degrees | |
| CN203287061U (en) | Ultrasonic flowmeter | |
| CN206990022U (en) | A kind of new necking down ultrasonic water meter shell | |
| CN203837759U (en) | Coriolis mass flowmeter sensor and its flow divider device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 |