WO2021147189A1 - Ultrasonic flowmeter pipe segment structure having welded threaded joint - Google Patents

Ultrasonic flowmeter pipe segment structure having welded threaded joint Download PDF

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Publication number
WO2021147189A1
WO2021147189A1 PCT/CN2020/085464 CN2020085464W WO2021147189A1 WO 2021147189 A1 WO2021147189 A1 WO 2021147189A1 CN 2020085464 W CN2020085464 W CN 2020085464W WO 2021147189 A1 WO2021147189 A1 WO 2021147189A1
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WO
WIPO (PCT)
Prior art keywords
pipe section
inner pipe
ultrasonic flowmeter
threaded joint
threaded joints
Prior art date
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PCT/CN2020/085464
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French (fr)
Chinese (zh)
Inventor
方欣
Original Assignee
青岛海威茨仪表有限公司
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Publication of WO2021147189A1 publication Critical patent/WO2021147189A1/en

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/08—Casing joints
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/12—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling
    • E21B47/14—Means for transmitting measuring-signals or control signals from the well to the surface, or from the surface to the well, e.g. for logging while drilling using acoustic waves
    • 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 a pipe section structure of an ultrasonic flowmeter with a welded threaded joint.
  • Both ends of the threaded joint of the pipe section structure of the existing through-beam ultrasonic flowmeter are formed with external threads.
  • the external thread and the internal thread Thread glue needs to be applied between them, which is troublesome to install.
  • the outer pipe section In order to process the internal thread, the outer pipe section must reach a sufficient thickness, which causes the outer pipe section to use more materials and waste resources.
  • the required length of the threaded joint 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, thus reducing the gap between the two transducer assemblies. Therefore, the turndown ratio of the ultrasonic flowmeter is reduced (the turndown ratio of the ultrasonic flowmeter is proportional to the projection distance of the distance between the transducer components in the direction of the water flow).
  • the utility model aims to solve the above problems and provides an ultrasonic flowmeter pipe section structure with welded threaded joints.
  • the threaded joints may loosen during installation of the equipment, it can also increase two transducers.
  • the distance in the tube between the components of the device can effectively increase the turndown ratio of the ultrasonic flowmeter.
  • the pipe section structure of an ultrasonic flowmeter with a welded threaded joint includes an outer pipe section and a threaded joint.
  • the outer pipe section is a hollow pipe body. Both sides of the outer pipe section are fixedly connected to the threaded joints.
  • the outer side of the threaded joint is formed with an outer pipe. Thread.
  • the outer pipe section is fitted with an inner pipe section
  • the inner pipe section includes a first inner pipe section and a second inner pipe section
  • two inner pipe sections are respectively provided at both ends of the first inner pipe section
  • the first inner pipe section The pipe section is butted with the second inner pipe section, and the threaded joints at both ends compress 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 mounting seat, the bracket and the second inner pipe section are integrally injection molded.
  • part or all of the transducer assembly is located inside the threaded joint.
  • one end of the threaded joint is formed with a welding protection platform and a first step
  • the second inner pipe section is formed with a first protrusion
  • the welding protection platform is an annular boss
  • the welding protection platform is inserted into the outer pipe section and Between the second inner pipe sections, the welding protection platform is in contact with the first protrusion, and the end surface of the outer pipe section is in contact with the first step and is fixed by welding.
  • 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 second step is formed with a first groove
  • the end surface of the second inner pipe section is formed with a second protrusion
  • the second protrusion is inserted into the first groove
  • the threaded joint is formed with a first ring groove
  • the second inner pipe section is formed with a first ring boss
  • the first ring boss is inserted into the first ring groove
  • the first ring boss and
  • a sealing ring is arranged between the first ring grooves.
  • 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 communicated with the lead-out groove.
  • the material of the first inner pipe section and the second inner pipe section is high temperature resistant plastic.
  • the utility model has the following advantages: only one end of the threaded joint is formed with an external thread, and the threaded joint is fixed to the outer pipe section by laser welding. There is no need to screw threads for installation and no thread glue is required.
  • the installation process is simple and convenient; the outer pipe section does not need to be processed inside.
  • Thread the outer pipe section can be made of thin-walled plate rolled pipe welded stainless steel pipe. The thin thickness requires less material and low processing cost, which solves the problem of wasting resources in the existing pipe section structure; increases the gap between the two transducer components in the pipe The distance can effectively increase the range ratio of the ultrasonic flowmeter.
  • Figure 1 The front sectional view of the structure 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 threaded joint of the present invention.
  • connection should be understood in a broad sense.
  • it can be a fixed connection or an optional connection.
  • the ultrasonic flowmeter pipe section structure with welded threaded joints of this embodiment includes: an outer pipe section 1 and a threaded joint 4.
  • the outer pipe section 1 is a hollow pipe body, and the outer pipe section 1 The two sides are respectively fixedly connected with the threaded joint 4, and the outer side of the threaded joint 4 is formed with an external thread.
  • the threaded joint 4 and the outer pipe section 1 are both metal, and the threaded joint 4 and the outer pipe section 1 are fixed by laser welding.
  • the threaded joint 4 is connected with the pipeline through its external thread.
  • the outer pipe section 1 is fitted with an inner pipe section
  • the inner pipe section includes a first inner pipe section 2 and a second inner pipe section 3
  • the first inner pipe section 2 is provided with a second inner pipe section 3 at both ends, respectively
  • the first inner pipe section 2 is connected to the second inner pipe section 3, and the threaded joints 4 at both ends compress the first inner pipe section 2 and the second inner pipe section 3 so that the first inner pipe section 2 and the second inner pipe section 3 are opposite to the outer pipe section 1.
  • the location is fixed.
  • the outer wall of the inner pipe section is in contact with the inner wall of 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.
  • the mounting seat, the bracket and the second inner pipe section are integrally molded by injection molding.
  • the space between the mounting seat 32 and the mounting cover 33 is a closed space and a sealing ring is arranged between the two to seal the transducer assembly between the two to prevent direct contact between the transducer assembly and the fluid.
  • the transducer assembly is an assembly that includes all the components required by the transducer, such as transducer ceramic chips and circuit boards.
  • part or all of the transducer assembly is located inside the threaded joint 4.
  • the mounting seat 32 protrudes out of the inside of the second inner pipe section 3 and enters the inside of the threaded joint 4, so that the distance between the two transducer components in the outer pipe section 1 is as close as possible to the pipe length of the outer pipe section 1. Increasing the distance between the transducer components can improve the accuracy of the flowmeter.
  • one end of the threaded joint 4 is formed with a welding protection platform 41 and a first step 42
  • the second inner pipe section 3 is formed with a first protrusion 36
  • the welding protection platform 41 is an annular boss
  • the welding The protection stand 41 is inserted between the outer pipe section 1 and the second inner pipe section 3, the welding protection stand 41 is in contact with the first protrusion 36, and the end surface of the outer pipe section 1 is in contact with the first step 42 and is fixed by welding.
  • the plurality of first protrusions 36 are arranged along the circumference of the center of the second inner pipe section 3, and their function is equivalent to an integral step, which cooperates with the welding protection platform 41 to play a positioning role.
  • the use of multiple first protrusions 36 can save material.
  • the welding protection table 41 shields the second inner pipe section 3 so that the second inner pipe section 3 made of plastic will not be directly exposed under the welding point during welding. In this way, the second inner pipe section 3 made of plastic is shielded by a circle of welding protection platform 41, so that the temperature of the second inner pipe section 3 will be lower during welding, and the high temperature deformation of the second inner pipe section 3 is prevented.
  • a second step 21 is formed at both ends of the first inner pipe section 2, and the second inner pipe section 3 is in contact with the second step 21.
  • the second step 21 is formed with a first groove 22, the end surface of the second inner pipe section 3 is formed with a second protrusion 35, and the second protrusion 35 is inserted into the first groove 22.
  • the threaded joint 4 is formed with a first annular groove 43
  • the second inner pipe section 3 is formed with a first annular boss 37
  • the first annular boss 36 is inserted into the first annular groove 43.
  • a sealing ring is provided between the first annular boss 37 and the first annular groove 43.
  • 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 grooves 23, and the coiled grooves 23 and the lead-out grooves 24 are communicated with each other.
  • a channel 311 is formed inside the bracket 31. The lead wire of the transducer assembly in the mounting seat 32 passes through the channel 311, then passes through the channel between the two first protrusions 36, and finally passes through the wire slot 23 to the lead slot 24.
  • 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 other side of the wire slot 23, then fold the lead wire back into the lead-out slot 24, and lower the lead wire in the lead-out slot.
  • the length of the groove 24, and finally the lead wire enters the meter body 7 from the connection hole 11 of the outer tube section 1 to connect to the circuit board in the meter body 7.
  • the material of the first inner pipe section 2 and the second inner pipe section 3 is high temperature resistant plastic.
  • the temperature of the lower part of laser welding is about 100°C, and the deformation temperature of the high-temperature resistant plastic is 150°C. The first inner pipe section 2 and the second inner pipe section 3 will not be deformed at high temperature.
  • the threaded joint 4 is an externally threaded stainless steel structure metal head, which can be processed separately and conveniently with a small machine tool;
  • the outer pipe section 1 is a thin-walled plate coiled pipe welded stainless steel pipe, which is low in price.
  • the first step 42 of the other threaded joint 4 is in contact with the end surface of the outer pipe section 1, and the threaded joint 4 applies axial pressure to the inner pipe section.
  • the second threaded joint 4 is fixed to the outer pipe section 1 by laser welding.
  • the relative rotation between the second inner pipe section 3 and the threaded joint 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-out slot 24.
  • 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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  • Life Sciences & Earth Sciences (AREA)
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Abstract

An ultrasonic flowmeter pipe segment structure having a welded threaded joint, comprising an outer pipe segment (1) and a threaded joint (4). The outer pipe segment is a hollow pipe body; the two sides of the outer pipe segment are separately and fixedly connected to the threaded joint; outer threads are formed on the outer side of the threaded joint. The threaded joint is fixed with the outer pipe segment by means of laser welding, threads and thread glue are not needed for connection, and a mounting process is simple and convenient. Inner threads are not needed to be machined on the outer pipe segment, and therefore, the outer pipe segment may be a thin-walled plate reel pipe welding seam stainless steel pipe, and the machining cost is low; moreover, this structure further can increase a mounting distance between transducer components, and provides an economical and rapid solution of an ultrasonic flowmeter base meter with a large measurement range ratio.

Description

具有焊接螺纹接头的超声波流量计管段结构Ultrasonic flow meter pipe section structure with welded threaded joint 技术领域Technical field
本实用新型具体涉及具有焊接螺纹接头的超声波流量计管段结构。The utility model specifically relates to a pipe section structure of an ultrasonic flowmeter with a welded threaded joint.
背景技术Background technique
现有的对射式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，外螺纹和内螺纹之间还需要涂抹螺纹胶，安装麻烦。外管段为了加工内螺纹必须达到足够的厚度，这造成了外管段使用材料较多，浪费资源。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 pipe section structure of the existing through-beam ultrasonic flowmeter are formed with external threads. As described in the patent authorization announcement number CN 208223575 U, it is fixed by the external thread and the internal thread of the external pipe section. The external thread and the internal thread Thread glue needs to be applied between them, which is troublesome to install. In order to process the internal thread, the outer pipe section must reach a sufficient thickness, which causes the outer pipe section to use more materials and waste resources. More importantly, taking DN20 as an example, the required length of the threaded joint 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, thus reducing the gap between the two transducer assemblies. Therefore, the turndown ratio of the ultrasonic flowmeter is reduced (the turndown ratio of the ultrasonic flowmeter is proportional to the projection distance of the distance between the transducer components in the direction of the water flow).
实用新型内容Utility model content
本实用新型旨在解决上述问题，提供了一种具有焊接螺纹接头的超声波流量计管段结构，它除了解决设备在应用安装时螺纹接头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 problems and provides an ultrasonic flowmeter pipe section structure with welded threaded joints. In addition to solving the safety hazard that the threaded joints may loosen during installation of the equipment, it can also increase two transducers. The distance in the tube between the components of the device can effectively increase the turndown ratio of the ultrasonic flowmeter.
具有焊接螺纹接头的超声波流量计管段结构，包括：外管段和螺纹接头，所述外管段为中空管体，所述外管段两侧分别与螺纹接头固接，所述螺纹接头外侧形成有外螺纹。The pipe section structure of an ultrasonic flowmeter with a welded threaded joint includes an outer pipe section and a threaded joint. The outer pipe section is a hollow pipe body. Both sides of the outer pipe section are fixedly connected to the threaded joints. The outer side of the threaded joint is formed with an outer pipe. Thread.
优选的，所述外管段内部穿装有内管段，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 管段与第二内管段对接，两端的螺纹接头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 outer pipe section is fitted with an inner pipe section, the inner pipe section includes a first inner pipe section and a second inner pipe section, two inner pipe sections are respectively provided at both ends of the first inner pipe section, and the first inner pipe section The pipe section is butted with the second inner pipe section, and the threaded joints at both ends compress 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，所述安装座、支架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 mounting seat, the bracket and the second inner pipe section are integrally injection molded.
优选的，换能器组件部分或全部位于螺纹接头内部。Preferably, part or all of the transducer assembly is located inside the threaded joint.
优选的，所述螺纹接头一端形成有焊接保护台和第一台阶，所述第二内管段形成有第一凸起，所述焊接保护台为环形凸台，所述焊接保护台***外管段和第二内管段之间，所述焊接保护台与第一凸起接触，所述外管段的端面与第一台阶接触并通过焊接固定。Preferably, one end of the threaded joint is formed with a welding protection platform and a first step, the second inner pipe section is formed with a first protrusion, the welding protection platform is an annular boss, and the welding protection platform is inserted into the outer pipe section and Between the second inner pipe sections, the welding protection platform is in contact with the first protrusion, and the end surface of the outer pipe section is in contact with the first step and is fixed by welding.
优选的，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, 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，所述第二台阶形成有第一凹槽，所述第二内管段端面形成有第二凸起，所述第二凸起***到第一凹槽中。Preferably, the second step is formed with a first groove, the end surface of the second inner pipe section is formed with a second protrusion, and the second protrusion is inserted into the first groove.
优选的，所述螺纹接头形成有第一环槽，所述第二内管段形成有第一环形凸台，所述第一环形凸台***第一环槽中，所述第一环形凸台和第一环槽之间设置有密封圈。Preferably, the threaded joint is formed with a first ring groove, the second inner pipe section is formed with a first ring boss, the first ring boss is inserted into the first ring groove, the first ring boss and A sealing ring is arranged between the first ring grooves.
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 communicated with the lead-out groove.
优选的，所述第一内管段和第二内管段的材质为耐高温塑料。Preferably, the material of the first inner pipe section and the second inner pipe section is high temperature resistant plastic.
本实用新型具有如下优点：螺纹接头只有一端形成有外螺纹，螺纹接 头通过激光焊接与外管段固定，不需要拧螺纹进行安装也不需要使用螺纹胶，安装过程简单方便；外管段不需要加工内螺纹，外管段可以采用薄壁板材卷管焊缝不锈钢管，厚度薄需要材料少，加工成本低，解决了现有管段结构浪费资源的问题；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 has the following advantages: only one end of the threaded joint is formed with an external thread, and the threaded joint is fixed to the outer pipe section by laser welding. There is no need to screw threads for installation and no thread glue is required. The installation process is simple and convenient; the outer pipe section does not need to be processed inside. Thread, the outer pipe section can be made of thin-walled plate rolled pipe welded stainless steel pipe. The thin thickness requires less material and low processing cost, which solves the problem of wasting resources in the existing pipe section structure; increases the gap between the two transducer components in the pipe The distance can effectively increase the range ratio of the ultrasonic flowmeter.
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：本实用新型的主视剖视结构示意图；Figure 1: The front sectional view of the structure 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螺纹接头的结构示意图。Figure 3: The structure diagram of the inner pipe section and threaded joint of the present invention.
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，本实施例的具有焊接螺纹接头的超声波流量计管段结构，包括：外管段1和螺纹接头4，所述外管段1为中空管体，所述外管段1两侧分别与螺纹接头4固接，所述螺纹接头4外侧形成有外螺纹。螺纹接头4与外管段1均为金属，螺纹接头4与外管段1采用激光焊接进行固定。螺纹接头4通过其外螺纹与管道连接。As shown in Figures 1 to 3, the ultrasonic flowmeter pipe section structure with welded threaded joints of this embodiment includes: an outer pipe section 1 and a threaded joint 4. The outer pipe section 1 is a hollow pipe body, and the outer pipe section 1 The two sides are respectively fixedly connected with the threaded joint 4, and the outer side of the threaded joint 4 is formed with an external thread. The threaded joint 4 and the outer pipe section 1 are both metal, and the threaded joint 4 and the outer pipe section 1 are fixed by laser welding. The threaded joint 4 is connected with the pipeline through its external thread.
优选的，所述外管段1内部穿装有内管段，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对接，两端的螺纹接头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。内管段外壁与外管段1内壁接触。Preferably, the outer pipe section 1 is fitted with an inner pipe section, the inner pipe section includes a first inner pipe section 2 and a second inner pipe section 3, and the first inner pipe section 2 is provided with a second inner pipe section 3 at both ends, respectively, The first inner pipe section 2 is connected to the second inner pipe section 3, and the threaded joints 4 at both ends compress the first inner pipe section 2 and the second inner pipe section 3 so that the first inner pipe section 2 and the second inner pipe section 3 are opposite to the outer pipe section 1. The location is fixed. The outer wall of the inner pipe section is in contact with the inner wall of 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。优选的，所述安装座与支架及第二内管段为一体注塑成型。安装座32和安装盖33之间的空间为密闭空间且二者之间设置有密封圈，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。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. Preferably, the mounting seat, the bracket and the second inner pipe section are integrally molded by injection molding. The space between the mounting seat 32 and the mounting cover 33 is a closed space and a sealing ring is arranged between the two to seal the transducer assembly between the two to prevent direct contact between the transducer assembly and the fluid. 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，换能器组件部分或全部位于螺纹接头4内部。安装座32凸出到第二内管段3的内部之外，进入到螺纹接头4内部，从而在外管段1内 部将两个换能器组件之间的距离尽可能接近外管段1的管长，一对换能器组件之间距离的提高可以提高流量计的精度。Preferably, part or all of the transducer assembly is located inside the threaded joint 4. The mounting seat 32 protrudes out of the inside of the second inner pipe section 3 and enters the inside of the threaded joint 4, so that the distance between the two transducer components in the outer pipe section 1 is as close as possible to the pipe length of the outer pipe section 1. Increasing the distance between the transducer components can improve the accuracy of the flowmeter.
优选的，所述螺纹接头4一端形成有焊接保护台41和第一台阶42，所述第二内管段3形成有第一凸起36，所述焊接保护台41为环形凸台，所述焊接保护台41***外管段1和第二内管段3之间，所述焊接保护台41与第一凸起36接触，所述外管段1的端面与第一台阶42接触并通过焊接固定。多个第一凸起36沿第二内管段3的圆心圆周排布，其作用相当于一个整体的台阶，与焊接保护台41配合起到定位作用。但是比一个整体的台阶，使用多个第一凸起36可以节省材料。在外管段1和螺纹接头4激光焊接时，焊接保护台41遮挡住第二内管段3，使塑料制成的第二内管段3在焊接时不会直接暴露在焊接点下方。这样通过一圈焊接保护台41遮挡塑料制成的第二内管段3，使第二内管段3在焊接时温度会更低，防止第二内管段3高温变形。Preferably, one end of the threaded joint 4 is formed with a welding protection platform 41 and a first step 42, the second inner pipe section 3 is formed with a first protrusion 36, the welding protection platform 41 is an annular boss, and the welding The protection stand 41 is inserted between the outer pipe section 1 and the second inner pipe section 3, the welding protection stand 41 is in contact with the first protrusion 36, and the end surface of the outer pipe section 1 is in contact with the first step 42 and is fixed by welding. The plurality of first protrusions 36 are arranged along the circumference of the center of the second inner pipe section 3, and their function is equivalent to an integral step, which cooperates with the welding protection platform 41 to play a positioning role. However, compared to a whole step, the use of multiple first protrusions 36 can save material. When the outer pipe section 1 and the threaded joint 4 are laser welded, the welding protection table 41 shields the second inner pipe section 3 so that the second inner pipe section 3 made of plastic will not be directly exposed under the welding point during welding. In this way, the second inner pipe section 3 made of plastic is shielded by a circle of welding protection platform 41, so that the temperature of the second inner pipe section 3 will be lower during welding, and the high temperature deformation of the second inner pipe section 3 is prevented.
优选的，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。Preferably, a second step 21 is formed at both ends of the first inner pipe section 2, and the second inner pipe section 3 is in contact with the second step 21.
优选的，所述第二台阶21形成有第一凹槽22，所述第二内管段3端面形成有第二凸起35，所述第二凸起35***到第一凹槽22中。Preferably, the second step 21 is formed with a first groove 22, the end surface of the second inner pipe section 3 is formed with a second protrusion 35, and the second protrusion 35 is inserted into the first groove 22.
优选的，所述螺纹接头4形成有第一环槽43，所述第二内管段3形成有第一环形凸台37，所述第一环形凸台36***第一环槽43中，所述第一环形凸台37和第一环槽43之间设置有密封圈。第一凸起36和焊接保护台41接触后，环形凸台37和第一环槽43之间的空间是一定的，防止过度挤压密封圈。Preferably, the threaded joint 4 is formed with a first annular groove 43, the second inner pipe section 3 is formed with a first annular boss 37, and the first annular boss 36 is inserted into the first annular groove 43. A sealing ring is provided between the first annular boss 37 and the first annular groove 43. After the first protrusion 36 is in contact with the welding protection platform 41, the space between the annular boss 37 and the first annular groove 43 is certain to prevent excessive compression of the sealing ring.
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，再经过两个第一凸起36之间的通道，最后经盘线槽23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 grooves 23, and the coiled grooves 23 and the lead-out grooves 24 are communicated with each other. A channel 311 is formed inside the bracket 31. The lead wire of the transducer assembly in the mounting seat 32 passes through the channel 311, then passes through the channel between the two first protrusions 36, and finally 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 other side of the wire slot 23, then fold the lead wire back into the lead-out slot 24, and lower the lead wire in the lead-out slot. The length of the groove 24, and finally the lead wire enters the meter body 7 from the connection hole 11 of the outer tube section 1 to connect to the circuit board in the meter body 7.
优选的，所述第一内管段2和第二内管段3的材质为耐高温塑料。激光焊接的下部温度为100℃左右，耐高温塑料形变温度为150℃，第一内管段2和第二内管段3不会高温形变。Preferably, the material of the first inner pipe section 2 and the second inner pipe section 3 is high temperature resistant plastic. The temperature of the lower part of laser welding is about 100°C, and the deformation temperature of the high-temperature resistant plastic is 150°C. The first inner pipe section 2 and the second inner pipe section 3 will not be deformed at high temperature.
优选的，螺纹接头4为外螺纹不锈钢结构金属头，可以单独、方便用小机床加工；外管段1为薄壁板材卷管焊缝不锈钢管，价格低廉。Preferably, the threaded joint 4 is an externally threaded stainless steel structure metal head, which can be processed separately and conveniently with a small machine tool; the outer pipe section 1 is a thin-walled plate coiled pipe welded stainless steel pipe, which is low in price.
工作原理：working principle:
安装时，首先将一侧的螺纹接头4通过激光焊接与外管段1固定。然后把第一内管段2和两侧的第二内管段3对准位置，将第二凸起35***到第一凹槽22限制第一内管段2和第二内管段3的相对转动。此时通道311、盘线槽23和引出槽24位于同一个平面，之后将换能器组件的引线拉到引出槽24中。将第一内管段2和两侧的两个第二内管段3整体***外管段1内部，使引出槽24对准此时第一凸起36和焊接保护台41起到定位作用。然后将另一个螺纹接头4的第一台阶42与外管段1端面接触，螺纹接头4对内管段施加轴向的压力，此时通过激光焊接将第二个螺纹接头4与外管段1固定。第二内管段3和螺纹接头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。When installing, firstly fix the threaded joint 4 on one side with the outer pipe section 1 by laser welding. Then the first inner pipe section 2 and the second inner pipe sections 3 on both sides are aligned, and the second protrusion 35 is inserted into the first groove 22 to limit the relative rotation of the first inner pipe section 2 and the second inner pipe section 3. At this time, the channel 311, the wire tray 23 and the lead-out groove 24 are located on the same plane, and then the lead of the transducer assembly is pulled into the lead-out groove 24. Insert the first inner pipe section 2 and the two second inner pipe sections 3 on both sides into the outer pipe section 1 as a whole, and align the lead-out groove 24. At this time, the first protrusion 36 and the welding protection platform 41 play a role in positioning. Then, the first step 42 of the other threaded joint 4 is in contact with the end surface of the outer pipe section 1, and the threaded joint 4 applies axial pressure to the inner pipe section. At this time, the second threaded joint 4 is fixed to the outer pipe section 1 by laser welding. The relative rotation between the second inner pipe section 3 and the threaded joint 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-out slot 24.
安装时，也可以选择先将内管段整体***外管段1后再焊接两侧的螺纹接头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 weld the threaded joints 4 on both sides.
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. 具有焊接螺纹接头的超声波流量计管段结构，其特征在于，包括：外管段(1)和螺纹接头(4)，所述外管段(1)为中空管体，所述外管段(1)两侧分别与螺纹接头(4)固接，所述螺纹接头(4)外侧形成有外螺纹。The ultrasonic flowmeter pipe section structure with welded threaded joints is characterized by comprising: an outer pipe section (1) and a threaded joint (4), the outer pipe section (1) is a hollow pipe body, and the outer pipe section (1) is two The sides are respectively fixedly connected with threaded joints (4), and external threads are formed on the outside of the threaded joints (4).
  2. 如权利要求1所述的具有焊接螺纹接头的超声波流量计管段结构，其特征在于：所述外管段(1)内部穿装有内管段，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)对接，两端的螺纹接头(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 with welded threaded joints according to claim 1, characterized in that: the outer pipe section (1) is fitted with an inner pipe section, and the inner pipe section includes a first inner pipe section (2) and a first inner pipe section (2). Two inner pipe sections (3), two inner pipe sections (3) are respectively provided at both ends of the first inner pipe section (2), and the first inner pipe section (2) is butted with the second inner pipe section (3). The threaded joint (4) compresses the first inner pipe section (2) and the second inner pipe section (3) to fix the positions of the first inner pipe section (2) and the second inner pipe section (3) relative to the outer pipe section (1).
  3. 如权利要求2所述的具有焊接螺纹接头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 with welded threaded joints according to claim 2, characterized in that: the second inner pipe section (3) is provided with a mounting seat (32) inside, and the mounting seat (32) is installed with The transducer assembly, 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 the bracket (31) One end is fixedly connected with the mounting seat (32), and the other end is fixedly connected with the inner wall of the second inner pipe section (3).
  4. 如权利要求1到3任意一项所述的具有焊接螺纹接头的超声波流量计管段结构，其特征在于：换能器组件部分或全部位于螺纹接头(4)内部。The ultrasonic flowmeter pipe section structure with welded threaded joints according to any one of claims 1 to 3, characterized in that part or all of the transducer assembly is located inside the threaded joint (4).
  5. 如权利要求2所述的具有焊接螺纹接头的超声波流量计管段结构，其特征在于：所述螺纹接头(4)一端形成有焊接保护台(41)和第一台阶(42)，所述第二内管段(3)形成有第一凸起(36)，所述焊接保护台(41)为环形凸台，所述焊接保护台(41)***外管段(1)和第二内管段(3)之间，所述焊接保护台(41)与第一凸起(36)接触，所述外管段(1)的端面与第一台阶(42)接触并通过焊接固定。The ultrasonic flowmeter pipe section structure with welded threaded joints according to claim 2, characterized in that: one end of the threaded joint (4) is formed with a welding protection platform (41) and a first step (42), and the second The inner pipe section (3) is formed with a first protrusion (36), the welding protection platform (41) is an annular boss, and the welding protection platform (41) is inserted into the outer pipe section (1) and the second inner pipe section (3) In between, the welding protection platform (41) is in contact with the first protrusion (36), and the end surface of the outer pipe section (1) is in contact with the first step (42) and fixed by welding.
  6. 如权利要求5所述的具有焊接螺纹接头的超声波流量计管段结构，其特征在于：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 with welded threaded joints according to claim 5, characterized in that: the two ends of the first inner pipe section (2) are respectively formed with second steps (21), and the second inner pipe section ( 3) Contact with the second step (21).
  7. 如权利要求6所述的具有焊接螺纹接头的超声波流量计管段结构，其特征在于：所述第二台阶(21)形成有第一凹槽(22)，所述第二内管段(3)端面形成有第二凸起(35)，所述第二凸起(35)***到第一凹槽(22)中。The ultrasonic flowmeter pipe section structure with welded threaded joints according to claim 6, characterized in that: the second step (21) is formed with a first groove (22), and the end surface of the second inner pipe section (3) A second protrusion (35) is formed, and the second protrusion (35) is inserted into the first groove (22).
  8. 如权利要求5所述的具有焊接螺纹接头的超声波流量计管段结构，其特征在于：所述螺纹接头(4)形成有第一环槽(43)，所述第二内管段(3)形成有第一环形凸台(37)，所述第一环形凸台(36)***第一环槽(43)中，所述第一环形凸台(37)和第一环槽(43)之间设置有密封圈。The ultrasonic flowmeter pipe section structure with welded threaded joints according to claim 5, characterized in that: the threaded joint (4) is formed with a first ring groove (43), and the second inner pipe section (3) is formed with The first annular boss (37), the first annular boss (36) is inserted into the first annular groove (43), and the first annular boss (37) and the first annular groove (43) are arranged between There are sealing rings.
  9. 如权利要求2所述的具有焊接螺纹接头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 with welded threaded joints 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 the first inner pipe section (2) Both sides are respectively formed with coiled grooves (23), and the coiled grooves (23) are communicated with the lead grooves (24).
  10. 如权利要求2所述的具有焊接螺纹接头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)的材质为耐高温塑料。The ultrasonic flowmeter pipe section structure with welded threaded joints according to claim 2, characterized in that the material of the first inner pipe section (2) and the second inner pipe section (3) is high temperature resistant plastic.
PCT/CN2020/085464 2020-01-21 2020-04-18 Ultrasonic flowmeter pipe segment structure having welded threaded joint WO2021147189A1 (en)

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