WO2021147190A1 - Tube section structure of ultrasonic flowmeter - Google Patents

Tube section structure of ultrasonic flowmeter Download PDF

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Publication number
WO2021147190A1
WO2021147190A1 PCT/CN2020/085469 CN2020085469W WO2021147190A1 WO 2021147190 A1 WO2021147190 A1 WO 2021147190A1 CN 2020085469 W CN2020085469 W CN 2020085469W WO 2021147190 A1 WO2021147190 A1 WO 2021147190A1
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WO
WIPO (PCT)
Prior art keywords
pipe section
inner pipe
ultrasonic flowmeter
tube section
outer tube
Prior art date
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PCT/CN2020/085469
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French (fr)
Chinese (zh)
Inventor
方欣
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青岛海威茨仪表有限公司
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Publication of WO2021147190A1 publication Critical patent/WO2021147190A1/en

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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
    • 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
    • G01F15/18—Supports or connecting means for meters

Definitions

  • the utility model specifically relates to the pipe section structure of an ultrasonic flowmeter.
  • Both ends of the threaded joint of the existing ultrasonic flowmeter pipe section structure are formed with external threads.
  • it is fixed by the external thread and the internal thread of the outer pipe section, which is troublesome to install and may loosen Security risks. It is more expensive to process threaded joints separately.
  • the required length of threaded joints is usually close to 30mm, which causes the position of the transducer assembly in the tube to be moved and fixed to the middle of the tube. The distance between the two transducer components is reduced, thereby reducing the turndown ratio of the ultrasonic flowmeter (the turndown ratio of the ultrasonic flowmeter is proportional to the projection distance of the distance between the transducer components in the water flow direction).
  • the utility model aims to solve the above-mentioned problems and provides an ultrasonic flowmeter pipe section structure in the form of an integral outer tube.
  • it can also increase two The distance in the tube between the transducer components can effectively increase the turndown ratio of the ultrasonic flowmeter.
  • the pipe section structure of the ultrasonic flowmeter includes: an outer pipe section, the outer pipe section is a hollow pipe body, the outer pipe section external threads are formed on both sides of the outer pipe section, the inner pipe section is penetrated inside the outer pipe section, and the inner pipe section Both ends are respectively provided with pressing rings, which are inserted into the outer pipe section and connected with the outer pipe section to compress and fix the inner pipe section.
  • the inner pipe section includes a first inner pipe section and a second inner pipe section.
  • the two ends of the first inner pipe section are respectively provided with a second inner pipe section.
  • the first inner pipe section is connected with the second inner pipe section.
  • the ring compresses the first inner pipe section and the second inner pipe section to fix the positions of the first inner pipe section and the second inner pipe section relative to the outer pipe section.
  • a mounting seat is arranged inside the second inner pipe section, a transducer assembly is installed inside the mounting seat, the mounting seat is fixedly connected to the mounting cover, and the mounting seat is between the inner wall of the second inner pipe section and the mounting seat.
  • a bracket is provided, one end of the bracket is fixedly connected with the mounting seat, and the other end is fixedly connected with the inner wall of the second inner pipe section.
  • the bracket, the mounting seat and the second inner pipe section are integrally injection molded.
  • first inner pipe section and the second inner pipe section are threadedly connected, a second step is formed at both ends of the first inner pipe section, and the second inner pipe section is in contact with the second step.
  • the first inner pipe section is in contact with the second inner pipe section, a second step is formed at both ends of the first inner pipe section, the second step forms a finite groove, and the second inner pipe section forms a finite position.
  • the second inner pipe section is formed with a first annular inclined surface
  • the pressure ring is formed with a second annular inclined surface
  • the first annular inclined surface is matched with the second annular inclined surface and is in contact with the second annular inclined surface.
  • a cavity is formed between the two inner pipe sections and the pressure ring, a sealing ring is arranged in the cavity, and the compression amount of the sealing ring is determined by the positioning between the pressure ring and the outer pipe section.
  • the second inner pipe section is formed with a second step, and the pressure ring is in contact with the second step.
  • the pressure ring is threadedly connected with the outer pipe section.
  • a first step is formed on both sides of the outer pipe section, and the pressure ring is formed with a first protrusion, and the first step is in contact with the first protrusion and restricts the axial movement of the pressure ring.
  • a lead-out groove is formed in the middle of the outer side of the first inner pipe section, and two sides of the first inner pipe section are respectively formed with coiled wire grooves, and the coiled wire groove is connected with the lead-out groove.
  • the utility model has the following advantages: the utility model does not require a separate threaded joint to be connected to the main body of the pipe, and its external thread is directly processed and formed on the outer pipe section at one time. In addition to overcoming the possibility of the threaded connection between the threaded joint and the outer pipe section during application installation In addition to the potential safety hazards of loosening, it can also reduce the processing cost and increase the installation distance between the transducer components, providing an economical, fast, and large-scale ultrasonic flowmeter base meter structure.
  • Figure 1 The front sectional view of the structure of the first embodiment of the utility model
  • Figure 2 A schematic diagram of the partial enlarged structure of the utility model at A;
  • Figure 3 The structure diagram of the inner pipe section and pressure ring of the present invention
  • Figure 4 The front sectional view of the structure of the second embodiment of the utility model
  • Figure 5 The partial enlarged schematic diagram of the utility model at B.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or an optional connection.
  • the pipe section structure of the ultrasonic flowmeter of this embodiment includes: an outer pipe section 1.
  • the outer pipe section 1 is a hollow pipe body, and the outer pipe section external threads are respectively formed on both sides of the outer pipe section 1. 11.
  • the outer pipe section 1 is equipped with an inner pipe section, and two ends of the inner pipe section are respectively provided with compression rings 4, and the compression ring 4 is inserted into the outer pipe section 1 and connected with the outer pipe section 1 to compress and fix the inner pipe section.
  • the outer pipe section 1 is made of metal, and the inner pipe section is made of plastic.
  • the outer pipe section 1 is threadedly connected with a pipe (such as a water pipe) through the outer thread 11 of the outer pipe section.
  • the inner pipe section includes a first inner pipe section 2 and a second inner pipe section 3.
  • Two ends of the first inner pipe section 2 are respectively provided with a second inner pipe section 3, the first inner pipe section 2 and the second inner pipe section 3 is connected, the pressing rings 4 at both ends compress the first inner pipe section 2 and the second inner pipe section 3 to fix the position of the first inner pipe section 2 and the second inner pipe section 3 relative to the outer pipe section 1.
  • a mounting seat 32 is provided inside the second inner pipe section 3, a transducer assembly is installed inside the mounting seat 32, the mounting seat 32 is fixedly connected to the mounting cover 33, and the mounting seat 32 is connected to the second
  • a bracket 31 is arranged between the inner walls of the inner pipe section 3, one end of the bracket 31 is fixedly connected to the mounting seat 32, and the other end is fixedly connected to the inner wall of the second inner pipe section 3.
  • a sealing ring is arranged between the mounting seat 32 and the mounting cover 33 to seal the transducer assembly between them, preventing the transducer assembly from directly contacting the fluid.
  • part or all of the transducer assembly is located inside the pressure ring 4.
  • the transducer assembly is an assembly that includes all the components required by the transducer, such as transducer ceramic chips and circuit boards.
  • the first inner pipe section 2 and the second inner pipe section 3 are threadedly connected, and two ends of the first inner pipe section 2 are respectively formed with a second step 21, and the second inner pipe section 3 is in contact with the second step 21.
  • the second step 21 acts as a limiter, restricting the second inner pipe section 3 to continue to screw in the direction of the second step 21.
  • a step is formed at the end of the second inner pipe section 3, and a sealing ring is arranged between this step and the second step 21.
  • the second step 21 restricts the axial movement of the second inner pipe section 3 to avoid excessive compression of the sealing ring.
  • the sealing ring can be compressed appropriately to avoid excessive pressure or excessive pressure.
  • the second inner pipe section 3 is formed with a first annular inclined surface 35
  • the pressure ring 4 is formed with a second annular inclined surface 44
  • the first annular inclined surface 35 is adapted to the second annular inclined surface 44 and is matched with the second annular inclined surface 44.
  • the two annular slopes 44 are in contact.
  • a sealing ring is provided on the step at the bottom of the second annular inclined surface 44. When the first annular inclined surface 35 contacts the second annular inclined surface 44, the sealing ring is in a normal compression amount.
  • the first annular inclined surface 35 and the second annular inclined surface 44 play an axial limiting function.
  • the pressure ring 4 is threadedly connected with the outer pipe section 1 (the outer thread of the pressure ring 4 and the inner thread that the outer pipe section 1 is adapted to are not shown in the figure).
  • first steps 13 are formed on both sides of the outer pipe section 1, and the pressing ring 4 is formed with a first protrusion 41, and the first step 13 is in contact with the first protrusion 41 and restricts the axis of the pressing ring 4 To movement.
  • a lead-out groove 24 is formed in the middle of the outer side of the first inner pipe section 2, and two sides of the first inner pipe section 2 are respectively formed with coiled wire grooves 23, and the coiled wire groove 23 is communicated with the lead-out groove 24.
  • a channel 311 is formed inside the bracket 31, and the lead wire of the transducer assembly in the mounting seat 32 passes through the channel 311, and then passes through the wire slot 23 to the lead slot 24. If the lead wire in the lead-out groove 24 is too long at this time, lay the lead wire through the lead-out groove 24 to the coiled wire groove 23 on the other side and fold the lead wire back into the lead-out groove 24. Length in slot 24. Finally, the lead wire enters the watch body 7 from the connection hole 11 of the outer pipe section 1 and is connected to the circuit board in the watch body 7.
  • the pressure ring 4 on one side is fixed to the outer pipe section 1 through a threaded connection. Align the lead groove 24 with the connecting hole 12 so that it is on the same plane, insert the inner pipe section as a whole into the outer pipe section 1, and the outer wall of the inner pipe section is in contact with the inner wall of the outer pipe section 1. When the first annular inclined surface 35 is in contact with the second annular inclined surface 44, the lead-out groove 24 is located below the connecting hole 12, and the lead of the transducer assembly is pulled into the lead-out groove 24. Then another pressure ring 4 is threadedly connected to the outer pipe section 1, and the pressure ring 4 applies axial pressure to the inner pipe section. The relative rotation between the second inner pipe section 3 and the pressure ring 4 is restricted by the frictional force of the end surface. Use a tool such as a hook to extend into the connecting hole 11 to hook the lead of the transducer assembly from the lead slot 24.
  • the pressure ring 4 may not be screwed and fixed with the outer pipe section 1, and the pressure ring 4 may be welded and fixed with the outer pipe section 1.
  • the pipe section structure of the ultrasonic flowmeter of this embodiment includes: an outer pipe section 1.
  • the outer pipe section 1 is a hollow pipe body, and the outer pipe section external threads are respectively formed on both sides of the outer pipe section 1. 11.
  • the outer pipe section 1 is equipped with an inner pipe section, and two ends of the inner pipe section are respectively provided with compression rings 4, and the compression ring 4 is inserted into the outer pipe section 1 and connected with the outer pipe section 1 to compress and fix the inner pipe section.
  • the outer pipe section 1 is made of metal, and the inner pipe section is made of plastic.
  • the outer pipe section 1 is threadedly connected with a pipe (such as a water pipe) through the outer thread 11 of the outer pipe section.
  • the inner pipe section includes a first inner pipe section 2 and a second inner pipe section 3.
  • Two ends of the first inner pipe section 2 are respectively provided with a second inner pipe section 3, the first inner pipe section 2 and the second inner pipe section 3 is connected, the pressing rings 4 at both ends compress the first inner pipe section 2 and the second inner pipe section 3 to fix the position of the first inner pipe section 2 and the second inner pipe section 3 relative to the outer pipe section 1.
  • a mounting seat 32 is provided inside the second inner pipe section 3, a transducer assembly is installed inside the mounting seat 32, the mounting seat 32 is fixedly connected to the mounting cover 33, and the mounting seat 32 is connected to the second
  • a bracket 31 is arranged between the inner walls of the inner pipe section 3, one end of the bracket 31 is fixedly connected to the mounting seat 32, and the other end is fixedly connected to the inner wall of the second inner pipe section 3.
  • a sealing ring is arranged between the mounting seat 32 and the mounting cover 33 to seal the transducer assembly between them, preventing the transducer assembly from directly contacting the fluid.
  • part or all of the transducer assembly is located inside the pressure ring 4.
  • the transducer assembly is an assembly that includes all the components required by the transducer, such as transducer ceramic chips and circuit boards.
  • the first inner pipe section 2 is in contact with the second inner pipe section 3, that is, the second inner pipe section 3 is in contact with the second step 21, and the two ends of the first inner pipe section 2 are respectively formed with second steps 21, the
  • the second step 21 forms a limiting groove 22,
  • the second inner tube section 3 forms a limiting protrusion 37, and the limiting protrusion 37 is inserted into the limiting groove 22 to limit the rotation of the second inner tube section 3 relative to the first inner tube section 2 .
  • a sealing ring is arranged between the first inner pipe section 2 and the second inner pipe section 3.
  • the second inner pipe section 3 is formed with a second step 34, and the pressure ring 4 is in contact with the second step 34.
  • a sealing ring is arranged between the second inner pipe section 3 and the pressure ring 4.
  • the pressure ring 4 is threadedly connected with the outer pipe section 1.
  • first steps 13 are formed on both sides of the outer pipe section 1, and the pressing ring 4 is formed with a first protrusion 41, and the first step 13 is in contact with the first protrusion 41 and restricts the axis of the pressing ring 4 To movement.
  • a lead-out groove 24 is formed in the middle of the outer side of the first inner pipe section 2, and two sides of the first inner pipe section 2 are respectively formed with coiled wire grooves 23, and the coiled wire groove 23 is communicated with the lead-out groove 24.
  • a channel 311 is formed inside the bracket 31, and the lead wire of the transducer assembly in the mounting seat 32 passes through the channel 311, passes through the wire slot 23 and then reaches the lead slot 24. If the lead wire in the lead-out groove 24 is too long at this time, lay the lead wire through the lead-out groove 24 to the coiled wire groove 23 on the other side and fold the lead wire back into the lead-out groove 24. Length in slot 24. Finally, the lead wire enters the watch body 7 from the connection hole 11 of the outer pipe section 1 and is connected to the circuit board in the watch body 7.
  • the pressure ring 4 on one side is fixed to the outer pipe section 1 through a threaded connection. Align the lead groove 24 with the connecting hole 12 so that it is on the same plane, insert the inner pipe section as a whole into the outer pipe section 1, and the outer wall of the inner pipe section is in contact with the inner wall of the outer pipe section 1. When the first annular inclined surface 35 is in contact with the second annular inclined surface 44, the lead-out groove 24 is located below the connecting hole 12, and the lead of the transducer assembly is pulled into the lead-out groove 24. Then another pressure ring 4 is threadedly connected to the outer pipe section 1, and the pressure ring 4 applies axial pressure to the inner pipe section. The relative rotation between the second inner pipe section 3 and the pressure ring 4 is restricted by the frictional force of the end surface. Use a tool such as a hook to extend into the connecting hole 11 to hook the lead of the transducer assembly from the lead slot 24.
  • the pressing ring 4 may not be screwed and fixed with the outer pipe section 1, and the pressing ring 4 may be fixed with the outer pipe section 1 by laser welding.
  • the present utility model is described above by way of examples, but the present utility model is not limited to the above-mentioned specific embodiments, and any changes or modifications made based on the utility model belong to the scope of protection claimed by the present utility model.

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  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measuring Volume Flow (AREA)

Abstract

Disclosed is a tube section structure of an ultrasonic flowmeter, with the tube section structure comprising an outer tube section (1), wherein the outer tube section (1) is of a hollow tube body; two sides of the outer tube section (1) are respectively provided with an outer tube section external thread (11); inner tube sections (2, 3) are mounted inside the outer tube section (1) in a penetrating manner; two ends of the inner tube sections (2, 3) are respectively provided with a pressing ring (4); and the pressing rings (4) are inserted into the outer tube section (1) and are connected to the outer tube section (1) for pressing and fixing the inner tube sections (2, 3). There is no need to provide an independent threaded connector to be connected to a tube main body, and external threads are directly formed on the outer tube section (1) by means of one-step machining, such that, in addition to overcoming the hidden danger of looseness of the threaded connection of the threaded connector and the outer tube section (1) during application and installation, the present invention can also reduce the machining costs and increase the installation distance between transducer assemblies, thereby providing a base meter structure of an ultrasonic flowmeter which is economic and rapid and has a large range ratio.

Description

超声波流量计管段结构Ultrasonic flow meter pipe section structure 技术领域Technical field
本实用新型具体涉及超声波流量计管段结构。The utility model specifically relates to the pipe section structure of an ultrasonic flowmeter.
背景技术Background technique
现有的超声波流量计管段结构的螺纹接头两端均形成有外螺纹如专利授权公告号CN 208223575 U所述，其通过外螺纹与外管段的内螺纹进行固定，安装麻烦，会有可能松动的安全隐患。单独加工螺纹接头成本较高，更为重要的是，以DN20为例，螺纹接头所需要的长度通常近30mm，这就造成管内换能器组件的位置只能向管中间移动及固定，这样，缩小了两换能器组件之间的间距，从而，减小了超声波流量计的量程比(超声波流量计的量程比与换能器组件之间距离在水流方向的投影距离成正比)。Both ends of the threaded joint of the existing ultrasonic flowmeter pipe section structure are formed with external threads. As described in Patent Authorization Announcement No. CN 208223575 U, it is fixed by the external thread and the internal thread of the outer pipe section, which is troublesome to install and may loosen Security risks. It is more expensive to process threaded joints separately. More importantly, taking DN20 as an example, the required length of threaded joints is usually close to 30mm, which causes the position of the transducer assembly in the tube to be moved and fixed to the middle of the tube. The distance between the two transducer components is reduced, thereby reducing the turndown ratio of the ultrasonic flowmeter (the turndown ratio of the ultrasonic flowmeter is proportional to the projection distance of the distance between the transducer components in the water flow direction).
实用新型内容Utility model content
本实用新型旨在解决上述问题，提供了一种整体外管形式的超声波流量计管段结构，除了解决设备在应用安装时螺纹接头成本高、有可能松动的安全隐患外，还能增大两个换能器组件之间在管内的距离，能有效增大超声波流量计的量程比。The utility model aims to solve the above-mentioned problems and provides an ultrasonic flowmeter pipe section structure in the form of an integral outer tube. In addition to solving the safety hazards of high cost and possible loosening of threaded joints during application and installation of the equipment, it can also increase two The distance in the tube between the transducer components can effectively increase the turndown ratio of the ultrasonic flowmeter.
超声波流量计管段结构，包括：外管段，所述外管段为中空管体，所述外管段两侧分别形成有外管段外螺纹，所述外管段内部穿装有内管段，所述内管段两端分别设置有压环，所述压环***外管段中与外管段连接将内管段压紧固定。The pipe section structure of the ultrasonic flowmeter includes: an outer pipe section, the outer pipe section is a hollow pipe body, the outer pipe section external threads are formed on both sides of the outer pipe section, the inner pipe section is penetrated inside the outer pipe section, and the inner pipe section Both ends are respectively provided with pressing rings, which are inserted into the outer pipe section and connected with the outer pipe section to compress and fix the inner pipe section.
优选的，所述内管段包括第一内管段和第二内管段，所述第一内管段 两端分别设置有第二内管段，所述第一内管段与第二内管段连接，两端的压环将第一内管段和第二内管段压紧使第一内管段和第二内管段相对外管段位置固定。Preferably, the inner pipe section includes a first inner pipe section and a second inner pipe section. The two ends of the first inner pipe section are respectively provided with a second inner pipe section. The first inner pipe section is connected with the second inner pipe section. The ring compresses the first inner pipe section and the second inner pipe section to fix the positions of the first inner pipe section and the second inner pipe section relative to the outer pipe section.
优选的，所述第二内管段内部设置有安装座，所述安装座内部安装有换能器组件，所述安装座与安装盖固定连接，所述安装座与第二内管段的内壁之间设置有支架，所述支架一端与安装座固定连接，另一端与第二内管段的内壁固定连接。优选的，所述支架、安装座及第二内管段为一体注塑成型。Preferably, a mounting seat is arranged inside the second inner pipe section, a transducer assembly is installed inside the mounting seat, the mounting seat is fixedly connected to the mounting cover, and the mounting seat is between the inner wall of the second inner pipe section and the mounting seat. A bracket is provided, one end of the bracket is fixedly connected with the mounting seat, and the other end is fixedly connected with the inner wall of the second inner pipe section. Preferably, the bracket, the mounting seat and the second inner pipe section are integrally injection molded.
优选的，所述第一内管段和第二内管段螺纹连接，所述第一内管段两端分别形成有第二台阶，所述第二内管段与第二台阶接触。Preferably, the first inner pipe section and the second inner pipe section are threadedly connected, a second step is formed at both ends of the first inner pipe section, and the second inner pipe section is in contact with the second step.
优选的，所述第一内管段和第二内管段接触，所述第一内管段两端分别形成有第二台阶，所述第二台阶形成有限位槽，所述第二内管段形成有限位凸起，所述限位凸起***限位槽中限制第二内管段相对第一内管段转动。Preferably, the first inner pipe section is in contact with the second inner pipe section, a second step is formed at both ends of the first inner pipe section, the second step forms a finite groove, and the second inner pipe section forms a finite position. A protrusion, where the limiting protrusion is inserted into the limiting groove to limit the rotation of the second inner tube section relative to the first inner tube section.
优选的，所述第二内管段形成有第一环形斜面，所述压环形成有第二环形斜面，所述第一环形斜面与第二环形斜面相适配并与第二环形斜面接触，第二内管段和压环之间形成空腔，空腔中设置有密封圈，密封圈的压缩量由压环与外管段之间的定位确定。Preferably, the second inner pipe section is formed with a first annular inclined surface, the pressure ring is formed with a second annular inclined surface, the first annular inclined surface is matched with the second annular inclined surface and is in contact with the second annular inclined surface. A cavity is formed between the two inner pipe sections and the pressure ring, a sealing ring is arranged in the cavity, and the compression amount of the sealing ring is determined by the positioning between the pressure ring and the outer pipe section.
优选的，所述第二内管段形成有第二台阶，所述压环与第二台阶接触。Preferably, the second inner pipe section is formed with a second step, and the pressure ring is in contact with the second step.
优选的，所述压环与外管段螺纹连接。Preferably, the pressure ring is threadedly connected with the outer pipe section.
优选的，所述外管段两侧形成有第一台阶，所述压环形成有第一凸起，所述第一台阶与第一凸起接触并限制压环的轴向运动。Preferably, a first step is formed on both sides of the outer pipe section, and the pressure ring is formed with a first protrusion, and the first step is in contact with the first protrusion and restricts the axial movement of the pressure ring.
优选的，所述第一内管段外侧中间形成有引出槽，所述第一内管段两 侧分别形成有盘线槽，所述盘线槽与引出槽相连通。Preferably, a lead-out groove is formed in the middle of the outer side of the first inner pipe section, and two sides of the first inner pipe section are respectively formed with coiled wire grooves, and the coiled wire groove is connected with the lead-out groove.
本实用新型具有如下优点：本实用新型不需要单独的螺纹接头与管主体连接，其外螺纹直接在外管段上一次性加工成型，除了克服了螺纹接头与外管段螺纹连接在应用安装时有可能会松动的安全隐患外，还能够降低加工成本及增大换能器组件之间的安装距离，提供了一种经济、快捷和具有较大量程比的超声波流量计基表结构。The utility model has the following advantages: the utility model does not require a separate threaded joint to be connected to the main body of the pipe, and its external thread is directly processed and formed on the outer pipe section at one time. In addition to overcoming the possibility of the threaded connection between the threaded joint and the outer pipe section during application installation In addition to the potential safety hazards of loosening, it can also reduce the processing cost and increase the installation distance between the transducer components, providing an economical, fast, and large-scale ultrasonic flowmeter base meter structure.
附图说明Description of the drawings
为了更清楚地说明本实用新型实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍。显而易见地，下面描述中的附图仅仅是本实用新型的一种实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据提供的附图引伸获得其它的实施附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only an embodiment of the present utility model. For those of ordinary skill in the art, without creative work, other implementations can be derived from the provided drawings. Attached.
图1：本实用新型实施例1的主视剖视结构示意图；Figure 1: The front sectional view of the structure of the first embodiment of the utility model;
图2：本实用新型在A处的局部放大结构示意图；Figure 2: A schematic diagram of the partial enlarged structure of the utility model at A;
图3：本实用新型内管段和压环的结构示意图；Figure 3: The structure diagram of the inner pipe section and pressure ring of the present invention;
图4：本实用新型实施例2的主视剖视结构示意图；Figure 4: The front sectional view of the structure of the second embodiment of the utility model;
图5：本实用新型在B处的局部放大结构示意图。Figure 5: The partial enlarged schematic diagram of the utility model at B.
具体实施方式Detailed ways
下面结合附图和实例对本实用新型作进一步说明：Hereinafter, the utility model will be further explained in conjunction with the drawings and examples:
下面详细描述本实用新型的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本实用新型，而不能理解为对本实用新型的限制。The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present utility model, and cannot be understood as a limitation to the present utility model.
在本实用新型的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本实用新型中的具体含义。In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection or an optional connection. Disassembly connection, or integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meaning of the above-mentioned terms in the present utility model can be understood under specific circumstances.
实施例1Example 1
如图1到图3所示，本实施例的超声波流量计管段结构，包括：外管段1，所述外管段1为中空管体，所述外管段1两侧分别形成有外管段外螺纹11，所述外管段1内部穿装有内管段，所述内管段两端分别设置有压环4，所述压环4***外管段1中与外管段1连接将内管段压紧固定。外管段1为金属，内管段为塑料。外管段1通过外管段外螺纹11与管道(如水管)螺纹连接。As shown in Figures 1 to 3, the pipe section structure of the ultrasonic flowmeter of this embodiment includes: an outer pipe section 1. The outer pipe section 1 is a hollow pipe body, and the outer pipe section external threads are respectively formed on both sides of the outer pipe section 1. 11. The outer pipe section 1 is equipped with an inner pipe section, and two ends of the inner pipe section are respectively provided with compression rings 4, and the compression ring 4 is inserted into the outer pipe section 1 and connected with the outer pipe section 1 to compress and fix the inner pipe section. The outer pipe section 1 is made of metal, and the inner pipe section is made of plastic. The outer pipe section 1 is threadedly connected with a pipe (such as a water pipe) through the outer thread 11 of the outer pipe section.
优选的，所述内管段包括第一内管段2和第二内管段3，所述第一内管段2两端分别设置有第二内管段3，所述第一内管段2与第二内管段3连接，两端的压环4将第一内管段2和第二内管段3压紧使第一内管段2和第二内管段3相对外管段1位置固定。Preferably, the inner pipe section includes a first inner pipe section 2 and a second inner pipe section 3. Two ends of the first inner pipe section 2 are respectively provided with a second inner pipe section 3, the first inner pipe section 2 and the second inner pipe section 3 is connected, the pressing rings 4 at both ends compress the first inner pipe section 2 and the second inner pipe section 3 to fix the position of the first inner pipe section 2 and the second inner pipe section 3 relative to the outer pipe section 1.
优选的，所述第二内管段3内部设置有安装座32，所述安装座32内部安装有换能器组件，所述安装座32与安装盖33固定连接，所述安装座32与第二内管段3的内壁之间设置有支架31，所述支架31一端与安装座32固定连接，另一端与第二内管段3的内壁固定连接。安装座32和安装盖33之间设置有密封圈将换能器组件密封在二者之间，防止换能器组件与流体直接接触。优选的，换能器组件部分或全部位于压环4内部。换能器组件为包括换能器陶瓷片和电路板等所有换能器所需部件的组件。Preferably, a mounting seat 32 is provided inside the second inner pipe section 3, a transducer assembly is installed inside the mounting seat 32, the mounting seat 32 is fixedly connected to the mounting cover 33, and the mounting seat 32 is connected to the second A bracket 31 is arranged between the inner walls of the inner pipe section 3, one end of the bracket 31 is fixedly connected to the mounting seat 32, and the other end is fixedly connected to the inner wall of the second inner pipe section 3. A sealing ring is arranged between the mounting seat 32 and the mounting cover 33 to seal the transducer assembly between them, preventing the transducer assembly from directly contacting the fluid. Preferably, part or all of the transducer assembly is located inside the pressure ring 4. The transducer assembly is an assembly that includes all the components required by the transducer, such as transducer ceramic chips and circuit boards.
优选的，所述第一内管段2和第二内管段3螺纹连接，所述第一内管段2两端分别形成有第二台阶21，所述第二内管段3与第二台阶21接触。第二台阶21起到限位作用，限制第二内管段3继续向第二台阶21方向旋进。第二内管段3的端部形成有台阶，此台阶和第二台阶21之间设置有密封圈，第二台阶21限制第二内管段3的轴向运动避免了过度压缩密封圈，只要第二内管段3与第二台阶21接触就可以给密封圈合适的压缩量，避免压力过大或过小。Preferably, the first inner pipe section 2 and the second inner pipe section 3 are threadedly connected, and two ends of the first inner pipe section 2 are respectively formed with a second step 21, and the second inner pipe section 3 is in contact with the second step 21. The second step 21 acts as a limiter, restricting the second inner pipe section 3 to continue to screw in the direction of the second step 21. A step is formed at the end of the second inner pipe section 3, and a sealing ring is arranged between this step and the second step 21. The second step 21 restricts the axial movement of the second inner pipe section 3 to avoid excessive compression of the sealing ring. When the inner pipe section 3 contacts the second step 21, the sealing ring can be compressed appropriately to avoid excessive pressure or excessive pressure.
优选的，所述第二内管段3形成有第一环形斜面35，所述压环4形成有第二环形斜面44，所述第一环形斜面35与第二环形斜面44相适配并与第二环形斜面44接触。第二环形斜面44底部的台阶上设置有密封圈，第一环形斜面35与第二环形斜面44接触时，密封圈处于正常压缩量。第一环形斜面35与第二环形斜面44起到轴向限位作用。Preferably, the second inner pipe section 3 is formed with a first annular inclined surface 35, the pressure ring 4 is formed with a second annular inclined surface 44, and the first annular inclined surface 35 is adapted to the second annular inclined surface 44 and is matched with the second annular inclined surface 44. The two annular slopes 44 are in contact. A sealing ring is provided on the step at the bottom of the second annular inclined surface 44. When the first annular inclined surface 35 contacts the second annular inclined surface 44, the sealing ring is in a normal compression amount. The first annular inclined surface 35 and the second annular inclined surface 44 play an axial limiting function.
优选的，所述压环4与外管段1螺纹连接(压环4的外螺纹和外管段1与其适配的内螺纹在图中未示出)。Preferably, the pressure ring 4 is threadedly connected with the outer pipe section 1 (the outer thread of the pressure ring 4 and the inner thread that the outer pipe section 1 is adapted to are not shown in the figure).
优选的，所述外管段1两侧形成有第一台阶13，所述压环4形成有第一凸起41，所述第一台阶13与第一凸起41接触并限制压环4的轴向运动。Preferably, first steps 13 are formed on both sides of the outer pipe section 1, and the pressing ring 4 is formed with a first protrusion 41, and the first step 13 is in contact with the first protrusion 41 and restricts the axis of the pressing ring 4 To movement.
优选的，所述第一内管段2外侧中间形成有引出槽24，所述第一内管段2两侧分别形成有盘线槽23，所述盘线槽23与引出槽24相连通。支架31内部形成有通道311，安装座32内的换能器组件的引线经过通道311，经盘线槽23后到引出槽24。如果此时在引出槽24内的引线过长，将引线穿过引出槽24到另一侧的盘线槽23铺设一定距离后将引线折返回到引出槽24中，通过盘线降低引线在引出槽24中的长度。最后引线从外管段1的连接孔11进入表体7与表体7内的电路板连接。Preferably, a lead-out groove 24 is formed in the middle of the outer side of the first inner pipe section 2, and two sides of the first inner pipe section 2 are respectively formed with coiled wire grooves 23, and the coiled wire groove 23 is communicated with the lead-out groove 24. A channel 311 is formed inside the bracket 31, and the lead wire of the transducer assembly in the mounting seat 32 passes through the channel 311, and then passes through the wire slot 23 to the lead slot 24. If the lead wire in the lead-out groove 24 is too long at this time, lay the lead wire through the lead-out groove 24 to the coiled wire groove 23 on the other side and fold the lead wire back into the lead-out groove 24. Length in slot 24. Finally, the lead wire enters the watch body 7 from the connection hole 11 of the outer pipe section 1 and is connected to the circuit board in the watch body 7.
工作原理：working principle:
安装时，首先将两侧的第二内管段3与第一内管段2螺纹连接，将第二内管段3旋转至第二台阶21接触。此时，第一内管段2和第二内管段3的位置固定。When installing, firstly connect the second inner pipe section 3 on both sides with the first inner pipe section 2 by screwing, and rotate the second inner pipe section 3 until the second step 21 is in contact. At this time, the positions of the first inner pipe section 2 and the second inner pipe section 3 are fixed.
将一侧的压环4通过螺纹连接与外管段1固定。将引出槽24对准连接孔12，使其位于同一平面，将内管段整体***外管段1中，内管段外壁与外管段1内壁接触。当第一环形斜面35与第二环形斜面44接触时，引出槽24位于连接孔12下方，将换能器组件的引线拉到引出槽24中。然后将另一个压环4与外管段1螺纹连接，压环4对内管段施加轴向的压力。第二内管段3和压环4之间通过端面的摩擦力限制其相对转动。使用钩子等工具伸入连接孔11将换能器组件的引线从引出槽24勾出。The pressure ring 4 on one side is fixed to the outer pipe section 1 through a threaded connection. Align the lead groove 24 with the connecting hole 12 so that it is on the same plane, insert the inner pipe section as a whole into the outer pipe section 1, and the outer wall of the inner pipe section is in contact with the inner wall of the outer pipe section 1. When the first annular inclined surface 35 is in contact with the second annular inclined surface 44, the lead-out groove 24 is located below the connecting hole 12, and the lead of the transducer assembly is pulled into the lead-out groove 24. Then another pressure ring 4 is threadedly connected to the outer pipe section 1, and the pressure ring 4 applies axial pressure to the inner pipe section. The relative rotation between the second inner pipe section 3 and the pressure ring 4 is restricted by the frictional force of the end surface. Use a tool such as a hook to extend into the connecting hole 11 to hook the lead of the transducer assembly from the lead slot 24.
安装时，也可以选择先将内管段整体***外管段1后再螺纹连接两侧的压环4。During installation, you can also choose to first insert the inner pipe section as a whole into the outer pipe section 1, and then threadedly connect the pressure rings 4 on both sides.
压环4也可以不与外管段1螺纹连接固定，压环4可以与外管段1焊接固定。The pressure ring 4 may not be screwed and fixed with the outer pipe section 1, and the pressure ring 4 may be welded and fixed with the outer pipe section 1.
实施例2Example 2
如图3到图5所示，本实施例的超声波流量计管段结构，包括：外管段1，所述外管段1为中空管体，所述外管段1两侧分别形成有外管段外螺纹11，所述外管段1内部穿装有内管段，所述内管段两端分别设置有压环4，所述压环4***外管段1中与外管段1连接将内管段压紧固定。外管段1为金属，内管段为塑料。外管段1通过外管段外螺纹11与管道(如水管)螺纹连接。As shown in Figures 3 to 5, the pipe section structure of the ultrasonic flowmeter of this embodiment includes: an outer pipe section 1. The outer pipe section 1 is a hollow pipe body, and the outer pipe section external threads are respectively formed on both sides of the outer pipe section 1. 11. The outer pipe section 1 is equipped with an inner pipe section, and two ends of the inner pipe section are respectively provided with compression rings 4, and the compression ring 4 is inserted into the outer pipe section 1 and connected with the outer pipe section 1 to compress and fix the inner pipe section. The outer pipe section 1 is made of metal, and the inner pipe section is made of plastic. The outer pipe section 1 is threadedly connected with a pipe (such as a water pipe) through the outer thread 11 of the outer pipe section.
优选的，所述内管段包括第一内管段2和第二内管段3，所述第一内管 段2两端分别设置有第二内管段3，所述第一内管段2与第二内管段3连接，两端的压环4将第一内管段2和第二内管段3压紧使第一内管段2和第二内管段3相对外管段1位置固定。Preferably, the inner pipe section includes a first inner pipe section 2 and a second inner pipe section 3. Two ends of the first inner pipe section 2 are respectively provided with a second inner pipe section 3, the first inner pipe section 2 and the second inner pipe section 3 is connected, the pressing rings 4 at both ends compress the first inner pipe section 2 and the second inner pipe section 3 to fix the position of the first inner pipe section 2 and the second inner pipe section 3 relative to the outer pipe section 1.
优选的，所述第二内管段3内部设置有安装座32，所述安装座32内部安装有换能器组件，所述安装座32与安装盖33固定连接，所述安装座32与第二内管段3的内壁之间设置有支架31，所述支架31一端与安装座32固定连接，另一端与第二内管段3的内壁固定连接。安装座32和安装盖33之间设置有密封圈将换能器组件密封在二者之间，防止换能器组件与流体直接接触。优选的，换能器组件部分或全部位于压环4内部。换能器组件为包括换能器陶瓷片和电路板等所有换能器所需部件的组件。Preferably, a mounting seat 32 is provided inside the second inner pipe section 3, a transducer assembly is installed inside the mounting seat 32, the mounting seat 32 is fixedly connected to the mounting cover 33, and the mounting seat 32 is connected to the second A bracket 31 is arranged between the inner walls of the inner pipe section 3, one end of the bracket 31 is fixedly connected to the mounting seat 32, and the other end is fixedly connected to the inner wall of the second inner pipe section 3. A sealing ring is arranged between the mounting seat 32 and the mounting cover 33 to seal the transducer assembly between them, preventing the transducer assembly from directly contacting the fluid. Preferably, part or all of the transducer assembly is located inside the pressure ring 4. The transducer assembly is an assembly that includes all the components required by the transducer, such as transducer ceramic chips and circuit boards.
优选的，所述第一内管段2和第二内管段3接触，即第二内管段3与第二台阶21接触，所述第一内管段2两端分别形成有第二台阶21，所述第二台阶21形成有限位槽22，所述第二内管段3形成有限位凸起37，所述限位凸起37***限位槽22中限制第二内管段3相对第一内管段2转动。第一内管段2和第二内管段3之间设置有密封圈。Preferably, the first inner pipe section 2 is in contact with the second inner pipe section 3, that is, the second inner pipe section 3 is in contact with the second step 21, and the two ends of the first inner pipe section 2 are respectively formed with second steps 21, the The second step 21 forms a limiting groove 22, the second inner tube section 3 forms a limiting protrusion 37, and the limiting protrusion 37 is inserted into the limiting groove 22 to limit the rotation of the second inner tube section 3 relative to the first inner tube section 2 . A sealing ring is arranged between the first inner pipe section 2 and the second inner pipe section 3.
优选的，所述第二内管段3形成有第二台阶34，所述压环4与第二台阶34接触。第二内管段3和压环4之间设置有密封圈。Preferably, the second inner pipe section 3 is formed with a second step 34, and the pressure ring 4 is in contact with the second step 34. A sealing ring is arranged between the second inner pipe section 3 and the pressure ring 4.
优选的，所述压环4与外管段1螺纹连接。Preferably, the pressure ring 4 is threadedly connected with the outer pipe section 1.
优选的，所述外管段1两侧形成有第一台阶13，所述压环4形成有第一凸起41，所述第一台阶13与第一凸起41接触并限制压环4的轴向运动。Preferably, first steps 13 are formed on both sides of the outer pipe section 1, and the pressing ring 4 is formed with a first protrusion 41, and the first step 13 is in contact with the first protrusion 41 and restricts the axis of the pressing ring 4 To movement.
优选的，所述第一内管段2外侧中间形成有引出槽24，所述第一内管段2两侧分别形成有盘线槽23，所述盘线槽23与引出槽24相连通。支架31内部形成有通道311，安装座32内的换能器组件的引线经过通道311， 经盘线槽23后到引出槽24。如果此时在引出槽24内的引线过长，将引线穿过引出槽24到另一侧的盘线槽23铺设一定距离后将引线折返回到引出槽24中，通过盘线降低引线在引出槽24中的长度。最后引线从外管段1的连接孔11进入表体7与表体7内的电路板连接。Preferably, a lead-out groove 24 is formed in the middle of the outer side of the first inner pipe section 2, and two sides of the first inner pipe section 2 are respectively formed with coiled wire grooves 23, and the coiled wire groove 23 is communicated with the lead-out groove 24. A channel 311 is formed inside the bracket 31, and the lead wire of the transducer assembly in the mounting seat 32 passes through the channel 311, passes through the wire slot 23 and then reaches the lead slot 24. If the lead wire in the lead-out groove 24 is too long at this time, lay the lead wire through the lead-out groove 24 to the coiled wire groove 23 on the other side and fold the lead wire back into the lead-out groove 24. Length in slot 24. Finally, the lead wire enters the watch body 7 from the connection hole 11 of the outer pipe section 1 and is connected to the circuit board in the watch body 7.
工作原理：working principle:
安装时，首先将两侧的第二内管段3与第一内管段2连接，将限位凸起37***限位槽22中。When installing, firstly connect the second inner pipe section 3 on both sides with the first inner pipe section 2, and insert the limiting protrusion 37 into the limiting groove 22.
将一侧的压环4通过螺纹连接与外管段1固定。将引出槽24对准连接孔12，使其位于同一平面，将内管段整体***外管段1中，内管段外壁与外管段1内壁接触。当第一环形斜面35与第二环形斜面44接触时，引出槽24位于连接孔12下方，将换能器组件的引线拉到引出槽24中。然后将另一个压环4与外管段1螺纹连接，压环4对内管段施加轴向的压力。第二内管段3和压环4之间通过端面的摩擦力限制其相对转动。使用钩子等工具伸入连接孔11将换能器组件的引线从引出槽24勾出。The pressure ring 4 on one side is fixed to the outer pipe section 1 through a threaded connection. Align the lead groove 24 with the connecting hole 12 so that it is on the same plane, insert the inner pipe section as a whole into the outer pipe section 1, and the outer wall of the inner pipe section is in contact with the inner wall of the outer pipe section 1. When the first annular inclined surface 35 is in contact with the second annular inclined surface 44, the lead-out groove 24 is located below the connecting hole 12, and the lead of the transducer assembly is pulled into the lead-out groove 24. Then another pressure ring 4 is threadedly connected to the outer pipe section 1, and the pressure ring 4 applies axial pressure to the inner pipe section. The relative rotation between the second inner pipe section 3 and the pressure ring 4 is restricted by the frictional force of the end surface. Use a tool such as a hook to extend into the connecting hole 11 to hook the lead of the transducer assembly from the lead slot 24.
安装时，也可以选择先将内管段整体***外管段1后再螺纹连接两侧的压环4。During installation, you can also choose to first insert the inner pipe section as a whole into the outer pipe section 1, and then threadedly connect the pressure rings 4 on both sides.
压环4也可以不与外管段1螺纹连接固定，压环4可以与外管段1激光焊接固定。The pressing ring 4 may not be screwed and fixed with the outer pipe section 1, and the pressing ring 4 may be fixed with the outer pipe section 1 by laser welding.
上面以举例方式对本实用新型进行了说明，但本实用新型不限于上述具体实施例，凡基于本实用新型所做的任何改动或变型均属于本实用新型要求保护的范围。The present utility model is described above by way of examples, but the present utility model is not limited to the above-mentioned specific embodiments, and any changes or modifications made based on the utility model belong to the scope of protection claimed by the present utility model.

Claims (10)

  1. 超声波流量计管段结构，其特征在于，包括：外管段(1)，所述外管段(1)为中空管体，所述外管段(1)两侧分别形成有外管段外螺纹(11)，所述外管段(1)内部穿装有内管段，所述内管段两端分别设置有压环(4)，所述压环(4)***外管段(1)中与外管段(1)连接将内管段压紧固定。The pipe section structure of the ultrasonic flowmeter is characterized by comprising: an outer pipe section (1), the outer pipe section (1) is a hollow pipe body, and the outer pipe section external threads (11) are respectively formed on both sides of the outer pipe section (1) , The outer pipe section (1) is fitted with an inner pipe section, and two ends of the inner pipe section are respectively provided with pressure rings (4), and the pressure ring (4) is inserted into the outer pipe section (1) and the outer pipe section (1). The connection compresses and fixes the inner pipe section.
  2. 如权利要求1所述的超声波流量计管段结构，其特征在于：所述内管段包括第一内管段(2)和第二内管段(3)，所述第一内管段(2)两端分别设置有第二内管段(3)，所述第一内管段(2)与第二内管段(3)连接，两端的压环(4)将第一内管段(2)和第二内管段(3)压紧使第一内管段(2)和第二内管段(3)相对外管段(1)位置固定。The ultrasonic flowmeter pipe section structure of claim 1, wherein the inner pipe section includes a first inner pipe section (2) and a second inner pipe section (3), and both ends of the first inner pipe section (2) are respectively A second inner pipe section (3) is provided. The first inner pipe section (2) is connected to the second inner pipe section (3). The pressure rings (4) at both ends connect the first inner pipe section (2) and the second inner pipe section ( 3) Compressing makes the first inner pipe section (2) and the second inner pipe section (3) fixed relative to the outer pipe section (1).
  3. 如权利要求2所述的超声波流量计管段结构，其特征在于：所述第二内管段(3)内部设置有安装座(32)，所述安装座(32)内部安装有换能器组件，所述安装座(32)与安装盖(33)固定连接，所述安装座(32)与第二内管段(3)的内壁之间设置有支架(31)，所述支架(31)一端与安装座(32)固定连接，另一端与第二内管段(3)的内壁固定连接。The ultrasonic flowmeter pipe section structure of claim 2, wherein the second inner pipe section (3) is provided with a mounting seat (32) inside, and a transducer assembly is installed inside the mounting seat (32), The mounting seat (32) is fixedly connected to the mounting cover (33), a bracket (31) is provided between the mounting seat (32) and the inner wall of the second inner pipe section (3), and one end of the bracket (31) is connected to The mounting seat (32) is fixedly connected, and the other end is fixedly connected with the inner wall of the second inner pipe section (3).
  4. 如权利要求2所述的超声波流量计管段结构，其特征在于：所述第一内管段(2)和第二内管段(3)螺纹连接，所述第一内管段(2)两端分别形成有第二台阶(21)，所述第二内管段(3)与第二台阶(21)接触。The ultrasonic flowmeter pipe section structure according to claim 2, characterized in that: the first inner pipe section (2) and the second inner pipe section (3) are threadedly connected, and both ends of the first inner pipe section (2) are respectively formed There is a second step (21), and the second inner pipe section (3) is in contact with the second step (21).
  5. 如权利要求2所述的超声波流量计管段结构，其特征在于：所述第一内管段(2)和第二内管段(3)接触，所述第一内管段(2)两端分别形成有第二台阶(21)，所述第二台阶(21)形成有限位槽(22)，所述第二内管段(3)形成有限位凸起(37)，所述限位凸起(37)***限位槽(22)中限制第二内管段(3)相对第一内管段(2)转动。The ultrasonic flowmeter pipe section structure according to claim 2, characterized in that: the first inner pipe section (2) and the second inner pipe section (3) are in contact, and both ends of the first inner pipe section (2) are respectively formed with The second step (21), the second step (21) forms a limiting groove (22), the second inner tube section (3) forms a limiting protrusion (37), and the limiting protrusion (37) The second inner pipe section (3) is inserted into the limiting groove (22) to restrict the rotation of the second inner pipe section (3) relative to the first inner pipe section (2).
  6. 如权利要求2所述的超声波流量计管段结构，其特征在于：所述第二 内管段(3)形成有第一环形斜面(35)，所述压环(4)形成有第二环形斜面(44)，所述第一环形斜面(35)与第二环形斜面(44)相适配并与第二环形斜面(44)接触。The ultrasonic flowmeter pipe section structure according to claim 2, characterized in that: the second inner pipe section (3) is formed with a first annular inclined surface (35), and the pressure ring (4) is formed with a second annular inclined surface ( 44), the first annular inclined surface (35) is matched with the second annular inclined surface (44) and is in contact with the second annular inclined surface (44).
  7. 如权利要求2所述的超声波流量计管段结构，其特征在于：所述第二内管段(3)形成有第二台阶(34)，所述压环(4)与第二台阶(34)接触。The ultrasonic flowmeter pipe section structure according to claim 2, characterized in that: the second inner pipe section (3) is formed with a second step (34), and the pressure ring (4) is in contact with the second step (34) .
  8. 如权利要求1所述的超声波流量计管段结构，其特征在于：所述压环(4)与外管段(1)螺纹连接。The pipe section structure of the ultrasonic flowmeter according to claim 1, wherein the pressure ring (4) is threadedly connected with the outer pipe section (1).
  9. 如权利要求8所述的超声波流量计管段结构，其特征在于：所述外管段(1)两侧形成有第一台阶(13)，所述压环(4)形成有第一凸起(41)，所述第一台阶(13)与第一凸起(41)接触并限制压环(4)的轴向运动。The ultrasonic flowmeter pipe section structure according to claim 8, characterized in that: a first step (13) is formed on both sides of the outer pipe section (1), and the pressure ring (4) is formed with a first protrusion (41). ), the first step (13) is in contact with the first protrusion (41) and restricts the axial movement of the pressure ring (4).
  10. 如权利要求2所述的超声波流量计管段结构，其特征在于：所述第一内管段(2)外侧中间形成有引出槽(24)，所述第一内管段(2)两侧分别形成有盘线槽(23)，所述盘线槽(23)与引出槽(24)相连通。The ultrasonic flowmeter pipe section structure according to claim 2, characterized in that: a lead groove (24) is formed in the middle of the outer side of the first inner pipe section (2), and both sides of the first inner pipe section (2) are respectively formed with A coiled wire groove (23), the coiled wire groove (23) is communicated with the lead groove (24).
PCT/CN2020/085469 2020-01-21 2020-04-18 Tube section structure of ultrasonic flowmeter WO2021147190A1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226405A1 (en) * 2002-06-06 2003-12-11 Bell Joel David Flow meter
CN204228217U (en) * 2014-12-15 2015-03-25 姜跃炜 Ultrasonic flow rate measuring pipeline section
CN106595785A (en) * 2017-01-23 2017-04-26 青岛海威茨仪表有限公司 Opposite type small-bore ultrasonic flowmeter
CN106768097A (en) * 2016-12-28 2017-05-31 河北大学 A kind of inside and outside tubular type gas flowmeter and flow rate testing methods
CN207832285U (en) * 2017-12-25 2018-09-07 上海新奥新能源技术有限公司 A kind of adaptive pipeline section and flowmeter verification device
CN208223575U (en) * 2018-05-21 2018-12-11 青岛海威茨仪表有限公司 A kind of ultrasonic flow meter with small aperture pipe segment structure that straight pipe type is easily installed

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030226405A1 (en) * 2002-06-06 2003-12-11 Bell Joel David Flow meter
CN204228217U (en) * 2014-12-15 2015-03-25 姜跃炜 Ultrasonic flow rate measuring pipeline section
CN106768097A (en) * 2016-12-28 2017-05-31 河北大学 A kind of inside and outside tubular type gas flowmeter and flow rate testing methods
CN106595785A (en) * 2017-01-23 2017-04-26 青岛海威茨仪表有限公司 Opposite type small-bore ultrasonic flowmeter
CN207832285U (en) * 2017-12-25 2018-09-07 上海新奥新能源技术有限公司 A kind of adaptive pipeline section and flowmeter verification device
CN208223575U (en) * 2018-05-21 2018-12-11 青岛海威茨仪表有限公司 A kind of ultrasonic flow meter with small aperture pipe segment structure that straight pipe type is easily installed

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