DDTOP LGV V-Cone Flow Meter

Description of DDTOP LGV V-Cone

LGV V-cone flow meter is the second generation of inner cone flow meter, which is a high-performance differential pressure flow measuring instrument developed by Dandong Top Electronics Instrument (Group) Co., Ltd and Tianjin University. The unique support body and variable cone angle design enable it to deal with various gases, l iquids and vapor in metallurgy, chemical, fertilizer, chemical fiber, petroleum, natural gas, electric power, hydraulic, and other industrial enterprises in a short straight pipe section. It has the characteristics of firm cone, short straight pipe section, high measurement accuracy, wide range ratio, small pressure loss, and low installation cost.
It is a major breakthrough in the field of flow sensor technology in recent years. It compensates for its own structural defects such as standard flow element like orifice plates, nozzles and venturi tubes, and it has a broad market prospect.

Operating Principle
LGV V-cone flow meter is to install an inner cone concentric with the pipe in the measuring tube. The inner cone is specially designed and precision processed. When the fluid flows through the inner cone, the flow state is locally contracted and the flow rate increases, the static pressure drops, and the differential pressure △P is generated before and after the inner cone. Like other differential pressure flow meters, they are based on the law of fluid mass conservation (continuity equation) and energy conservation (Bernoulli equation), and the basic flow equation as follows:

Features

1.LGV V-cone flow meter carries on a lot of experimental research according to different equivalent diameter ratio and different front and rear cone angles, and finally determines the optimal combination of front and rear cone angles under different diameter ratio, which makes the range ratio wider and the measurement accuracy higher.

2.The method of cone fixation with support is adopted, which makes the cone fixation very firm and reliable, and reduces the influence of cone vibration on measurement. At the same time, the influence of the front and rear support on the flow field is also fully considered. Ensure the measurement accuracy.

3.The influence of coefficient of expandability ε on gas flow measurement is fully considered in the design of LGV V-cone flow meter. The real flow experiment of expansion coefficient is carried out by using the standard device of gas flow rate of sonic nozzle with positive pressure method.
4.With a wide range, LGV V-cone flow meter is throttled based on the gradual contraction mode of the side wall, which makes the vortex interference in the whole negative pressure region well suppressed, and the measurement effect on the static pressure becomes very small, even in a very small flow state, a very high signal-to-noise ratio can be obtained, so that the measurement can be carried out normally.

5.LGV V-cone flow meter has a special sidewall throttle structure, which has the function of rectifying the fluid flow state, so it only needs very short straight pipe section, the first 3 D and the second 2 D.

6.Small pressure loss which is beneficial to energy saving. The structural characteristic of LGV V-cone flow meter is streamlined throttle, so its pressure loss is small (about 1/3 of the orifice plate), so it has a great advantage to measure the flow rate of those low pressure and large flow fluids.

7.LGV V-cone flow meter has the boundary layer effect formed by the special structure, so that the key parts of the throttle will not be worn out, so it can keep the geometry constant for a long time and it can work stably for a long time without calibration. Meanwhile, the flow meter has no movable parts (without any electronic devices), it is a pure mechanical body, so it is resistant to high temperature, high pressure, corrosion and vibration.

Applications

Refining: Sulfur Recovery

 Technical specifications of DDTOP LGV V-Cone

How to buy DDTOP LGV V-Cone

Example:

LGV-1005AA, LGV V-cone flow meter, nominal diameter DN100, nominal pressure 5MPa, flange connection, without differential pressure transmitter.