Model of vortex flowmeter in paper mill with monitoring and inspection measuring instrument

Model and technical parameters of vortex flowmeter in Qingdao Hesheng Company with supervision and inspection measuring instrument and paper mill:
Accuracy level: 1
0; Level 1
5 , Level 0
5 (liquid) output signal square wave: high level ≥ 6V, low level & lt; 1V； Standard current 4 ~ 20mA supply voltage + 12VDC ~ 24VDC resistance coefficient cd≤ 2
4 explosion proof grade exdiict6 environmental condition temperature - 40 ~ 55 ℃, relative humidity 5% ~ 90%, atmospheric pressure 86 ~ 106kpa, flange standard of Ministry of Chemical Industry Standard electrical interface of mechanical department M20 * 1
5 internal thread (NPT thread needs to be customized)
Precautions for selection of measuring instruments with supervision and inspection of Qingdao Hesheng Zhiyuan Automation System Co
, Ltd
:
1
The diameter of digital anti vibration flowmeter shall be selected according to the flow
The medium flow must be within the flow range, otherwise it cannot work, and the flow is 30% - 80%;
2
If the actual pipe diameter is larger or smaller than the selected instrument diameter, shrink pipe or expansion pipe shall be used to reduce the diameter to ensure the normal use of the instrument;
3
The seismic steam flowmeter selects the flowmeter with corresponding temperature according to the measured medium temperature; Select whether the flowmeter is explosion-proof according to the measured medium and environmental requirements;
4
Vortex flowmeter has certain requirements for front and rear straight pipe sections, generally the first 25 times DN and the last 5 times DN
See the instructions for specific requirements;
5
Generally, the liquid of the compressed air flowmeter is not provided with temperature and pressure compensation, the saturated steam shall be provided with temperature or pressure compensation, and the gas and superheated steam shall be compensated with temperature and pressure at the same time

6
Yongxin is equipped with monitoring and inspection measuring instruments and vortex flowmeter models in paper mills
Scientists from various countries have successively invested in the research of fluid vibration flowmeter in different ways
By the late 1960s and early 1970s, the above three kinds of flow meters appeared successively
Due to manufacturing, application and reasons, the development of the three flowmeters is different
When measuring the liquid flow in the installation of vertical pipeline, the liquid flow direction should be from bottom to top: in this way, the liquid weight will not be added to the probe
When measuring the volume flow, the vortex flowmeter does not need compensation
The signal output by the vortex street is actually linear with the flow rate, That is, it is proportional to the volume flow
The purpose of pressure and temperature compensation is to obtain the density of fluid and multiply it by the volume flow to obtain the mass flow
If the volume flow of gas is measured, there is no need for compensation
Yongxin belt monitoring and inspection measuring instrument, vortex flowmeter model and technical parameters of paper mill:
 
Protection grade of steam flow measuring device: IP65 electrical interface: M20 & times; 1
5 explosion proof type: ordinary non explosion-proof type, explosion-proof type (optional), Yongxin with monitoring and inspection measuring instrument, model of vortex flowmeter in paper mill, ambient temperature: - 35 ℃ ~ 60 ℃, relative humidity: 5 ~ 95% vortex flowmeter with monitoring and inspection measuring instrument is vulnerable to vibration, and vortex flowmeter with excellent design can be eliminated through hardware and digital signal processing, In order to obtain a stable signal, there shall be a metering straight pipe section with a length of at least 15d upstream of the vortex flowmeter
The inner wall of the straight pipe section shall be smooth, and there shall be no steps
Grind the weld of the connecting flange, and the flange gasket shall not protrude into the pipe
The installation direction of flowmeter shall not be reversed
The test shows that unreasonable installation will lead to low metering value of flowmeter
Installation and operation instructions of Qingdao Zhiyuan instrument belt supervision and inspection measuring instrument:
1
The installation site of anti-seismic vortex flowmeter shall avoid the influence of strong current equipment, high-frequency equipment, strong switching power supply, high temperature, high humidity and corrosive atmosphere

2
When the pipeline has strong vibration, vibration reduction measures shall be taken
Anti vibration seats and anti vibration pads are respectively set at 2D upstream and downstream of Dongying flowmeter

3
Tsgd7006 steam meter can be installed horizontally, vertically and obliquely; The medium must fill the pipeline and have a certain back pressure

4
The process pipeline shall be concentric with the flowmeter; The inner diameter of the process pipe shall be consistent with the inner diameter of the flowmeter, otherwise a contraction pipe or expansion pipe shall be added

5
The sealing gasket of steam vortex flowmeter cannot protrude into the pipeline, and the inner diameter of the sealing gasket can be 1-2mm larger than the inner diameter of the flowmeter

6
If temperature and pressure compensation is required, the pressure tap shall be 3-5d downstream and the temperature tap shall be 6-8d downstream

7
Yongxin is equipped with monitoring and inspection measuring instruments
The vortex flowmeter model of paper mill
By the late 1980s, about 10 enterprises in the United States, Europe and Japan had produced various vortex flowmeter products
According to relevant data, the output of vortex flowmeter in 1987 was close to 40000 units, and all experimental research work was carried out under the condition of infinite two-dimensional uniform flow field
In the three-dimensional pipe flow field, the research of vortex street flow measurement is carried out
It will be postponed to the mid-1960s
During this period, scientists from Japan, and other countries successively carried out the research and development of vortex flowmeter
The emergence of this situation also led to the evolution of product pattern
Some enterprises with weak technical force, insufficient production equipment and testing conditions, difficult to ensure product quality and unable to provide high-quality services for users were gradually eliminated by the market, A trouble in the installation of vortex flowmeter requires a long straight pipe section before and after
Some manufacturers can provide the design of reducing the diameter inside the flowmeter, which greatly reduces the user's need to equip the vortex flowmeter with a straight pipe section
Qingdao Hesheng Zhiyuan Automation System Co
, Ltd
189 Huixin 5483 same No
1481
Q：3438-5007-67