WO2017080051A1 - 一种v锥流量计 - Google Patents

一种v锥流量计 Download PDF

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Publication number
WO2017080051A1
WO2017080051A1 PCT/CN2015/098933 CN2015098933W WO2017080051A1 WO 2017080051 A1 WO2017080051 A1 WO 2017080051A1 CN 2015098933 W CN2015098933 W CN 2015098933W WO 2017080051 A1 WO2017080051 A1 WO 2017080051A1
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Prior art keywords
tube
cone
pressure
measuring
measuring tube
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Application number
PCT/CN2015/098933
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English (en)
French (fr)
Inventor
权高清
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苏州权素船舶电子有限公司
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Publication of WO2017080051A1 publication Critical patent/WO2017080051A1/zh

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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
    • G01F1/05—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 using mechanical effects
    • G01F1/34—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 using mechanical effects by measuring pressure or differential pressure

Definitions

  • the present invention relates to the technical field of flowmeters, and in particular to a V-cone flowmeter.
  • the V-cone flowmeter is a novel differential pressure flowmeter proposed in the 1980s that uses the throttling effect generated by a V-shaped cone in the flow field to measure flow. Compared to ordinary fluids, it changes the throttling layout from a central orifice throttling to a ring throttling. Long-term use proves that V-type flowmeter is suitable for dirty media and small pressure loss compared with general differential pressure flowmeter. Moreover, since the V-cone flowmeter is a differential pressure flowmeter, its principle is based on Bernoulli's law of energy conversion in a closed pipeline.
  • the V-cone flowmeter is widely used because of its high precision, good repeatability, limited installation conditions, wear resistance, and wide measurement range.
  • the center line of the commonly used V-cone flowmeter type cone is easily deviated from the axis of the measuring tube, which does not reach coincidence, which seriously affects the measurement accuracy and stability of the flowmeter; on the other hand, when a large flow medium flows through, The V-shaped cone is easily washed away.
  • the present invention proposes a new technical solution.
  • a V-cone flowmeter comprising a measuring tube, a V-cone throttle, a positive pressure take-up tube and a negative take-up a V-cone throttle member is disposed in the measuring tube body, and the V-cone throttle member is fixed in the measuring tube through the first bracket and the second bracket, and the connecting tube has a connecting flange at both ends.
  • the connecting flange is fixed by bolts, and the upper end of the measuring tube is respectively provided with a positive pressure taking tube and a negative pressure taking tube, and the positive pressure taking tube is connected with the front end of the V cone throttle piece, the negative pressure taking tube and the V cone section The back end of the streamlet is connected.
  • an axial pressure guiding tube is disposed in the V-cone throttle.
  • a front end of the V-cone throttle member is provided with a longitudinal pressure guiding tube.
  • the axial pressure tube and the longitudinal pressure tube are matched.
  • a temperature probe insertion hole is disposed on the wall of the measuring tube.
  • the invention has the beneficial effects that the measuring performance of the V-cone flowmeter proposed by the invention is stable, and the precision in the measuring process is ensured, and at the same time, the measuring range is proposed, the measuring process is stable and high, the pressure taking mode is simple, and the design is Reasonable, simple operation, reduced pressure and improved service life.
  • Figure 1 is a schematic view of the structure of the present invention.
  • measuring tube 1, measuring tube, 2, V cone throttle, 3, first bracket, 4, second bracket, 5, longitudinal impulse tube, 6, axial pressure tube, 7, positive pressure tube, 8, Negative pressure tube, 9, temperature probe insertion hole, 10, connecting flange, 11, bolt.
  • a V-cone flowmeter includes a measuring tube 1, a V-cone throttle 2, a positive pressure-receiving tube 7 and a negative pressure-receiving tube 8.
  • the measuring tube 1 is provided with a V-cone throttle 2, V. Cone section
  • the flow piece 2 is fixed in the measuring tube 1 through the first bracket 3 and the second bracket 4.
  • the measuring tube 1 is provided with a connecting flange 10 at both the front and the rear ends, and the connecting flange 10 is fixed by the bolt 11, and the upper end of the measuring tube 1 is respectively provided
  • the positive pressure pipe 7 and the negative pressure pipe 8 are connected, the positive pressure pipe 1 is connected to the front end of the V cone throttle 2, and the negative pressure pipe 8 is connected to the rear end of the V cone throttle 2 .
  • the V-cone throttle member 2 is provided with an axial pressure guiding tube 6, and the front end of the V-cone throttle member 2 is provided with a longitudinal pressure guiding tube 5, and the axial pressure guiding tube 6 and the longitudinal pressure guiding tube 5 are matched, and the measuring tube 1 wall A temperature probe insertion hole 9 is provided thereon.
  • the measurement performance of the V-cone flowmeter proposed by the invention is stable, and the precision in the measurement process is ensured.
  • the measurement range is proposed, the measurement process is stable and high, the pressure-taking mode is simple, and the design is reasonable, the operation is simple, and the operation is reduced. Pressure increases the service life.

Abstract

一种V锥流量计，包括测量管（1）、V锥节流件（2）、正取压管（7）和负取压管（8），测量管（1）体内设有V锥节流件（2），V锥节流件（2）通过第一支架（3）和第二支架（4）固定在测量管（1）内，测量管（1）前后两端均设有连接法兰（10），连接法兰（10）通过螺栓（11）固定，测量管（1）上端分别设有正取压管（7）和负取压管（8），正取压管（7）与V锥节流件（2）前端连接，负取压管（8）与V锥节流件（2）后端连接。该V锥流量计测量性能稳定，保证了测量过程中的精度，取压方式简单，而且，设计合理，操作简单，减少了压力，提高了使用寿命。

Description

一种V锥流量计 技术领域
本发明涉及流量计相关技术领域，具体涉及一种V锥流量计。
背景技术
V型锥流量计是20世纪80年代提出的一种新颖差压式流量计，它利用V型锥体在流场中产生的节流效应来测量流量。与普通流体相比，它改变了节流布局，从中心孔节流改为环状节流。长期的使用证明，V型流量计与一般差压流量计相比，适合脏污介质、压损小等特点。更由于V型锥流量计是一种差压式流量计，它的原理基于封闭管道中能量相互转换的伯努利定律。
目前,在差压式测量流量领域，V锥流量计具有精度高、重复性好、受安装条件局限小、耐磨损、测量范围宽的良好特性，因此其被广泛应用。但目前，常用的V锥流量计型锥体的中心线容易和测量管的轴线偏离，达不到重合，严重影响流量计测量精度和稳定性；另一方面是当大流量介质流经时，V型锥体容易被冲掉。
因此，针对上述问题，本发明提出了一种新的技术方案。
发明内容
本发明的目的是提供一种测量稳定性强，精度高的V锥流量计。
本发明是通过以下技术方案来实现的：
一种V锥流量计，包括测量管、V锥节流件、正取压管和负取 压管，所述测量管体内设有V锥节流件，所述V锥节流件通过第一支架和第二支架固定在测量管内，所述测量管前后两端均设有连接法兰，所述连接法兰通过螺栓固定，所述测量管上端分别设有正取压管和负取压管，所述正取压管与V锥节流件前端连接，所述负取压管与V锥节流件后端连接。
进一步地，所述V锥节流件内设有轴向引压管。
进一步地，所述V锥节流件前端设有纵向引压管。
进一步地，所述轴向引压管和纵向引压管相配合。
进一步地，所述测量管壁上设有温度探头插入孔。
本发明的有益效果是：本发明所提出的V锥流量计测量性能稳定，保证了测量过程中的精度，同时，提出了测量的量程，测量过程中稳定高，取压方式简单，而且，设计合理，操作简单，减少了压力，提高了使用寿命。
附图说明
图1为本发明的结构示意图。
其中：1、测量管，2、V锥节流件，3、第一支架，4、第二支架，5、纵向引压管，6、轴向引压管，7、正取压管，8、负取压管，9、温度探头插入孔，10、连接法兰，11、螺栓。
具体实施方式
下面结合附图说明对本发明做进一步地说明。
如图1所示，一种V锥流量计，包括测量管1、V锥节流件2、正取压管7和负取压管8，测量管1体内设有V锥节流件2，V锥节 流件2通过第一支架3和第二支架4固定在测量管1内，测量管1前后两端均设有连接法兰10，连接法兰10通过螺栓11固定，测量管1上端分别设有正取压管7和负取压管8，正取压管1与V锥节流件2前端连接，负取压管8与V锥节流件2后端连接。V锥节流件2内设有轴向引压管6，V锥节流件2前端设有纵向引压管5，轴向引压管6和纵向引压管5相配合，测量管1壁上设有温度探头插入孔9。
本发明所提出的V锥流量计测量性能稳定，保证了测量过程中的精度，同时，提出了测量的量程，测量过程中稳定高，取压方式简单，而且，设计合理，操作简单，减少了压力，提高了使用寿命。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (5)

  1. 一种V锥流量计，包括测量管、V锥节流件、正取压管和负取压管，其特征在于：所述测量管体内设有V锥节流件，所述V锥节流件通过第一支架和第二支架固定在测量管内，所述测量管前后两端均设有连接法兰，所述连接法兰通过螺栓固定，所述测量管上端分别设有正取压管和负取压管，所述正取压管与V锥节流件前端连接，所述负取压管与V锥节流件后端连接。
  2. 根据权利要求1所述一种V锥流量计，其特征在于：所述V锥节流件内设有轴向引压管。
  3. 根据权利要求1所述一种V锥流量计，其特征在于：所述V锥节流件前端设有纵向引压管。
  4. 根据权利要求2或3所述一种V锥流量计，其特征在于：所述轴向引压管和纵向引压管相配合。
  5. 根据权利要求1所述一种V锥流量计，其特征在于：所述测量管壁上设有温度探头插入孔。
PCT/CN2015/098933 2015-11-13 2015-12-25 一种v锥流量计 WO2017080051A1 (zh)

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