After analyzed the variation pattern of orifice plate opening bending sector center of circle and radius of each section in Xiaolangdi project,have established bending sector mathematical model,programmed Casio FX-4500p computational procedure and calculated the difference between section theoretical radius and measured radius.
通过分析小浪底工程孔板洞下弯段圆心以及各断面半径的变化规律,建立了弯曲段数学模型,编写了卡西欧fx-4500p计算程序,计算出断面理论点半径和断面实测点半径的差距,进而探讨了利用电子全站仪指挥棱镜移动就位进行渐变段施工放样的新方法。
Study of structure of spoke shape perforated plate for catalyst extruding machine;
轮辐型催化剂孔板的结构研究
This paper analysed the functions of the basic structure of perforated plate for catalyst extruding machine.
本文对催化剂挤条机孔板的基本结构进行功能分析,用回归分析的方法建立数学模型,采用该模型的孔板能够保证催化剂的尺寸精度、增加强度、提高表面光滑度,并经实践证明是有效的。
The complete metallic perforated plate heat exchanger is made of a lot of perforated copper plates alternated with stainless steel spacers,and piled up and welded each other.
全金属孔板叠层换热器是由铜制孔板和不锈钢隔片相间叠置，采用扩散焊工艺焊接而成。
The hydrodynamic cavitation generated through a n orifice plate is used to decompose aqueous solution of KI in this work.
在由孔板产生的水力空化条件下对KI水溶液分解反应进行了实验研究。
An experimental unit with standard orifice plate has been designed and installed with some improvement measur.
以“通风与空调工程施工及验收规范GB 50243-97”的一项新增条款为依据,对漏风量测试装置作了分析,着重对以孔板作节流元件的风管式漏风测试装置在风压调整及自动取压两方面作了改进,并做了相应的试验,为新规范在行业内的实施与推广作必要的准备。
The problem of measuring flow rate and mass dryness fraction in the same time during thermal recovery of heavy oil is solved by combining orifice plate with uniform velocity tube and on line measuring double parameters of two phase flow of steam and water.
利用孔板与均速管组合在线测量汽—水两相流双参数，解决了稠油热采中同时测量蒸汽流量与干度的难题。
Analysis of discharge coefficient of orifice in conduit with low velocity;
低流速孔板流量系数的分析
Discussion on calculation of flow rate and pressure drop of orifice in series;
串联孔板的流量-压降计算探讨
Numerical stimulation and analysis of discharge coefficient of orifice in conduit to measure discharge;
测流孔板数值模拟及流量系数的分析
The application of Weiliba in place of throttling orifice-plate to measure steam flow can reduce energy consumption and improve accuracy.
目前我国蒸汽流量测量大多使用标准节流孔板。
Orifice-plate is the core components of orifice-plate flowmeter which widely used in gas, steam and liquid flow measurement.
孔板作为广泛应用于气体、蒸汽和液体流量测量的孔板流量计的核心部件,其几何量参数的准确程度将直接影响孔板流量计的测量准确度,为了准确地测量气体流量,对孔板几何尺寸及有关参数必须按照相关国际、国家标准进行检测。