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technical article
Structure and classification of plug-in flow meters
2011-10-6 10:30:17

插入式流量计 结构 First, the structure of the plug-in flowmeter
1 )点流速计型。 ( 1 ) Point flow meter type. 一般 包括 以下五部分: 测量头、插入杆、插入机构、转换器和测量管道。 The sensor generally includes the following five parts: the measuring head, the insertion rod, the insertion mechanism, the converter, and the measurement pipe.
)测量头 是一台流速计,作为局部流速测量用。 1 ) Measuring head : It is a flow meter for local flow velocity measurement.
)插入机构 由连接法兰、插入杆提升机构及关键阀等组成,可 在不断流情况下将测量头从管道内提升到表体外以方便检修。 2 ) Insertion mechanism : It consists of connecting flange, insertion rod lifting mechanism and key valve. It can lift the measuring head from the pipeline to the surface of the surface under the condition of continuous flow for easy maintenance.
)转换器 测量头信号输出转换的电子部件。 3 ) Converter : the electronic component of the signal output conversion of the measuring head.
) 测量管道(也就是 仪表表体 ): 大口径的一般不带有仪表表体。 4 ) Measuring pipeline (that is, the meter body ): Generally, there is no meter body for large diameter. 在现场测量管道上开设带法兰的窗口,将测量头、插入杆、插入机构、转换器等安装于其上,这样现场的一段管道就起到仪表表体作用 Generally , a window with a flange is opened on the on-site measurement pipeline, and the measuring head, the insertion rod, the insertion mechanism, the converter, etc. are mounted on it, so that a section of the pipeline on the site serves as the meter body
2 )径流速计型 ( 2 ) Radiometer type
)差压式匀速管流量传感器,为不断流取出型结构,包括检测件(均速管)、阀、插入机构、取压装置等。 1 ) The differential pressure uniform velocity tube flow sensor is a continuous flow take-out type structure, including a detection element (average velocity tube), a valve, an insertion mechanism, a pressure taking device, and the like.
)热式匀速管流量传感器。 2 ) Thermal uniform velocity tube flow sensor. It consists of a detection rod and a converter. 不相同的 热丝感测元件,每一只感测元件与相应的电子不见组成一台热丝测速计。 Different hot wire sensing elements are arranged in the metal tube according to the speed area method , and each sensing element and the corresponding electron are missing to form a hot wire velocimeter. 结构也可做成不断流取出型与差压式一样,便于检修。 Its structure can also be made into continuous flow extraction type and differential pressure type for easy maintenance.
插入式 流量计 分类 Classification of plug-in flowmeters
1 )点流速计型分类 ( 1 ) Point flow meter type classification
)按工作原理分类 插入式涡街 插入式 涡轮、 插入式 电磁 靶式流量传感器、皮托文丘里管 、皮托静压管、 Cole 氏可逆皮托管、 S 形皮托管等 1 ) According to the working principle, there are plug-in vortex streets , plug-in turbines, plug-in electromagnetics , target flow sensors, Pitoventuri tubes , Pito static pressure tubes, Cole reversible pitot tubes, S -shaped pitot tubes, etc.
)按测量介质分类有液体型、气体型、蒸汽型 2 ) According to the measurement medium, there are liquid type, gas type and steam type ;
)按用途分类有普通型、防爆型、防腐型、高温型 3 ) According to the purpose, there are ordinary type, explosion-proof type, anti-corrosion type and high-temperature type ;
)按结构形式分类有断流取出型、不断流取出型。 4 ) According to the structure type, there are cut-off removal type and continuous flow removal type.
2 )径流速计型分类 ( 2 ) Radiometer type classification
)按工作原理分类有差压式均速管理流量传感器、热式均速管流量传感器、涡街流量传感器、超声流量传感器 1 ) According to the working principle, there are differential pressure type average speed management flow sensor, thermal average speed tube flow sensor, vortex flow sensor, ultrasonic flow sensor ;

)按测量介质分类有液体型、气体型、蒸汽型 2 ) According to the measurement medium, there are liquid type, gas type and steam type ;

)按用途分类有普通型、防爆型、防腐型、高温型 3 ) According to the purpose, there are ordinary type, explosion-proof type, anti-corrosion type and high-temperature type ;
)按结构形式分类有断流取出型、不断流取出型 4 ) According to the structure type, there are cut-off removal type and continuous flow removal type .