Start with your process. Find the right instrument.
Learn measurement principles, check process conditions, configure products and save technical resources.

A complete English edition of this article has not been published. The complete available Chinese version is shown below.

← Back to knowledge hub
Selection and applications3 min readContent language: ChineseUpdated 23 October 2026

明渠流量计:三角堰与矩形堰需要注意什么?

不同堰型具有不同几何及适用关系,不能共用一条指数曲线。

直接回答

不同堰型具有不同几何及适用关系,不能共用一条指数曲线。

三角堰和矩形堰水头指数及几何参数不同。

判断依据与适用条件

计算关系有明确的几何和流动前提。传感器读到压力或高度正确,只能验证其中一环;一次装置类型、尺寸、基准和边界状态还需核对。修改公式前应先保存原图纸和实测几何,避免错误被参数调整隐藏。

在明渠流量计中,本题的检查对象是三角堰与矩形堰。需要取得的证据是:分别记录堰角、堰口宽和适用关系。明渠关系依赖一次装置几何、水头基准和上下游流态。水位计正确只验证其中一环,顶托淹没或槽体变形后不能继续无条件套自由流曲线。检查先保存水准与尺寸,再核对曲线单位和指数;低水头误差应换成流量影响后评价。

针对本题怎样核查

  • 先核对堰口形状和尺寸。记录原始距离、水头与槽型曲线,标明其中哪些是本次实际取得的,未提供的诊断或功能不得当作本机已有能力。
  • 把三角堰与矩形堰对应的最低、常用和最不利状态列成表,注明持续时间及数据来源。
  • 围绕“分别记录堰角、堰口宽和适用关系”建立前后对照,参照应适用于当前对象及条件。比较期间保留三角堰与矩形堰的原配置及工艺状态,一次只处理已有证据指向的因素。

假设案例:如何作出判断

考虑“系统仍保留另一堰型参数”这一现场疑问。假设把三角堰算法换成矩形堰,不能只改名称而沿用原水位流量曲线。

先把当前条件与原选型条件对照。

确认结果与交付记录

这道题的结果应回到“三角堰与矩形堰”:结论旁写出支持它的分别记录堰角、堰口宽和适用关系,并注明实际覆盖的状态、参照依据与仍待确认项目。报告保留三角堰与矩形堰的原始记录和配置,不能把输出端的一次模拟签成未实际覆盖环节的通过。

案例为教学假设;限值及作业条件按实际型号和现场规程。参考文献不替代道威斯顿供货规格或认证。

Apply this knowledge to product selection

Customers and procurement

Check actual application and acceptance requirements against the article and product documentation. Bring open questions to DOWESTON for technical review.

Sales and technical teams

Record customer questions with application conditions. Verify range, interfaces and operating requirements against the selected model documentation.

Turn questions into application requirements

Collect application, connection, installation and acceptance requirements for the selected product, then review open points with DOWESTON.

Choose a product and prepare requirements
Not signed in to DOWESTON?
Create an account to start selecting products, check prices, and receive our newsletter on the latest products and trends.
Products & Services
Doweston offers a range of services to help you quickly build automated instrumentation systems. Contact us to learn more.
Ready to buy?
If you would like to purchase products,
simply contact our sales team — we are happy to help.
Who we are
DOWESTON delivers accurate and reliable measurement solutions
— trusted sensing and detection products for every industry!
Need service?
If you want to optimize production and reduce downtime,
we can help you choose the right spare parts and service products.
Edit Configuration

Product

Brand

Model

Confirm Changes Cancel
Your screen may be too small for the best experience.
We recommend using a computer,
or contact an engineer right away for selection support!
Need faster service? Call
400-888-4436
Continue Browsing