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technical article
Vortex flowmeter with high temperature and vibration resistance
2012-2-14 10:31:05

便是依据卡门旋涡原理进行封闭管道流体流量测量的新型流量计。 DXLUGB vortex flowmeter is a new type of flowmeter for measuring fluid flow in closed pipes based on the Carmen vortex principle. Because of its good medium adaptability, it can directly measure the working volume flow of steam, air, gas, water, and liquid without temperature and pressure compensation. Equipped with temperature and pressure sensors, it can measure standard volume flow and mass flow, which is throttling. The ideal replacement for the flow meter. In order to improve the high temperature resistance and vibration resistance of the DXLUGB vortex flowmeter, our company has recently developed an improved DXLU vortex flow sensor. Due to its unique structure and selection of materials, the sensor can ≤1g) Use under severe conditions. In practical applications, the maximum flow rate is often much lower than the upper limit value of the meter. As the load changes, the minimum flow rate is often lower than the lower limit value of the meter. The meter is not working in its optimal working section. One problem is usually to reduce the diameter at the measurement site to increase the flow velocity at the measurement site, and choose a smaller diameter instrument to facilitate the measurement of the instrument, but this method of diameter reduction must have a straight length of 15D or more between the reducer and the instrument. Pipe sections are rectified, making processing and installation inconvenient. The LGZ variable diameter rectifier developed by our company has a circular arc shape. It has multiple functions of rectifying, increasing the flow rate and changing the flow rate distribution. Its structure size is small, only 1/3 of the inner diameter of the process tube. It is integrated with the vortex flowmeter. Not only does not need to add another straight pipe section, it can also reduce the requirements for the straight pipe section of the process pipe, and the installation is very convenient.
For the convenience of use, the battery-powered local display-type vortex flowmeter uses micro-power high-tech. It can be operated continuously for more than one year using lithium battery power, which saves the procurement and installation costs of cables and display instruments. It can display instantaneous flow rates, Cumulative flow, etc. The temperature compensation integrated vortex flowmeter also has a temperature sensor, which can directly measure the temperature of the saturated steam and calculate the pressure, thereby displaying the mass flow of the saturated steam. Temperature and pressure compensation integrated type with temperature and pressure sensors for gas flow measurement can directly measure the temperature and pressure of the gas medium, thereby displaying the standard volume flow of the gas.


介质: 气体、液体、蒸气口径规格法兰卡装式口径选择25,32,50,80,100 DXLUGB vortex flowmeter measurement medium: gas, liquid, vapor caliber specifications flange-mounted caliber choice 25, 32, 50, 80, 100
Flange connection caliber selection 100, 150, 200
Flow measurement range Normal measurement flow range Reynolds number 1.5 × 104 ~ 4 × 106; gas 5 ~ 50m / s; liquid 0.5 ~ 7m / s
Normal measurement flow range See Table 2 for liquid and gas flow measurement ranges; Table 3 for vapor flow range
Measurement accuracy Class 1.0 Class 1.5 Measured medium temperature: normal temperature -25 ℃ ~ 100 ℃
High temperature-25 ℃ ~ 150 ℃ -25 ℃ ~ 250 ℃
Output signal pulse voltage output signal high level 8 ~ 10V low level 0.7 ~ 1.3V
Pulse duty cycle is about 50%, transmission distance is 100m
Pulse current remote transmission signal 4 ~ 20 mA, transmission distance is 1000m
Instrument use environment temperature: -25 ℃ ~ + 55 ℃ humidity: 5 ~ 90% RH50 ℃
Material: stainless steel, aluminum alloy power DC24V or lithium battery 3.6V
Explosion-proof grade intrinsically safe iaIIbT3-T6
Protection class IP65


,往往最大流量远低于仪表的上限值,随着负荷的变化,最小流量又往往会低于仪表的下限值,仪表并非工作在它的最佳工作段,为了解决这一问题,通常采用在测量处缩径提高测量处的流速,并选用较小口径的仪表以利于仪表的测量,但是这种变径方式必须在变径管与仪表间有长度为15D以上的直管段进行整流,使加工、安装都不方便。 DXLUGB vortex flowmeters often have a maximum flow rate that is much lower than the upper limit of the meter. As the load changes, the minimum flow rate is often lower than the lower limit of the meter. The meter is not working in its optimal working section. For this problem, usually reduce the diameter at the measuring point to increase the flow velocity at the measuring point, and choose a smaller diameter instrument to facilitate the measurement of the instrument. However, this method of reducing diameter must have a length of 15D or more between the reducing tube and the instrument. The straight pipe section is rectified, which makes processing and installation inconvenient. The LGZ variable diameter rectifier developed by our company has a circular arc shape. It has multiple functions of rectifying, increasing the flow rate and changing the flow rate distribution. Its structure size is small, only 1/3 of the inner diameter of the process tube. It is integrated with the vortex flowmeter. Not only does not need to add another straight pipe section, it can also reduce the requirements for the straight pipe section of the process pipe, and the installation is very convenient.
For the convenience of use, the battery-powered local display-type vortex flowmeter uses micro-power high-tech. It can be operated continuously for more than one year using lithium battery power, which saves the procurement and installation costs of cables and display instruments. It can display instantaneous flow rates, Cumulative flow, etc. The temperature compensation integrated vortex flowmeter also has a temperature sensor, which can directly measure the temperature of the saturated steam and calculate the pressure, thereby displaying the mass flow of the saturated steam. Temperature and pressure compensation integrated type with temperature and pressure sensors for gas flow measurement can directly measure the temperature and pressure of the gas medium, thereby displaying the standard volume flow of the gas.