1. Overview of V-cone Flowmeter
V-cone Flowmeter is a new differential pressure flow measuring instrument, which can measure all kinds of liquid, gas, steam and gas-liquid two-phase media. A cone is installed in the center of the conduit to throttle the flowmeter, and the flow is measured by measuring the differential pressure between the front and back of the cone. Compared with the traditional throttling element, the geometry of the cone has many advantages, so it is a new generation of throttling device. Simultaneous interpreting the V cone flowmeter with the traditional differential pressure flowmeter, the standard volume flow measurement system is composed of three valve groups, pressure guiding pipes, differential pressure transmitters and flow integrators. For compressible media such as gas and steam, temperature and pressure compensation can be realized to form a mass flow measurement system. With its superior performance, the flowmeter is suitable for different working environments, especially in the measurement of large flow, low pressure and high humidity gas, coke oven gas, natural gas and other dirty fluids in industrial production. V-cone Flowmeter is widely used in petroleum, chemical industry, natural gas, long-distance pipeline network, thermal pipeline network, metallurgy, electric power, water treatment, pharmacy, papermaking, food, aerospace and other industries.
2.Characteristics of V-cone Flowmeter
The purging design makes the V-cone Flowmeter have self-cleaning function and no retention area
No harsh straight pipe section requirements
The boundary layer effect makes the instrument wear-resistant, the throttling area stable for a long time and the signal stable
Suitable for gas-liquid two-phase measurement
The back pressure is stable and the relative pressure loss is small.
3.Main technical parameters of V-cone Flowmeter
Nominal diameter: DN15 ~ dn2000mm
Repeatability: ± 0.1%
Nominal pressure: 1.6, 4.0, 10, 16, 25, 40MPa
Range ratio: 10:1
Accuracy: ± 0.5%
β Range: 0.45 ~ 0.85
Medium temperature: - 50 ℃ ~ + 700 ℃
Straight pipe section: 0 ~ 3D upstream and 0 ~ 1D downstream
Low pressure drop: close to Venturi
Good stability: the throttling area is stable for a long time and the signal is stable.
|(1)Long-term stability:||± 0.1% F.S / Y|
|(4)Minimum flow velocity:||0.1m|
|(5)Turndown ratio:||Normally15:1; max50:1|
|(6)Reynolds number range:||8 × 103 ~ 5 × 106|
|(7)Operating pressure:||≤ 16MPa, 42MPa(maximum)|
|(8)Operating temperature:||-160 °C ~ 700 °C|
|(9)Nominal diameter:||φ15~φ2000 (1/2"~120")|
|(10)Environment temperature:||≤ 80 °C|
V-cone flow meter is a differential pressure type flow measurement device. So far it is more than 100 years since all kinds of flow measurement device that based on pressure differential theory been used. Pressure differential theory is based on energy conversion principle in sealed piping, means that to the steady liquid, flux and flow velocity's square root is direct ratio. We know that pressure will reduce when velocity increase, when medium approaches to cone the pressure is P1, but when medium is passing to cone's throttled area, because passing area reduced, speed increased, pressure reduced to P2, both P1 and P2 are connected to differential pressure transformer through pressure mouth. When flow rate is changed, the pressure differential value will increase or decrease accordingly.
1.Low installation requirement: Rectifying behavior changes the velocity distribution, eliminating the eddy current and blind space. upstream straight pipe 0-30D, downstream straight pipe 0-1D. 2. Turndown ratio : 10:1 (usually);50:1(maximum)
3. Small pressure loss and signal stability: V-cone differential pressure signal is high-frequency low-amplitude signals. When the same β value, the pressure loss is 1/3~1/5 of orifice plate's and signal fluctuation is 1/10 of orifice plate's.
4.Strong resistance against wear: After the streamline V cone is throttled, the vacuum effect will be generated on the surface of V cone to keep the V cone from being worn easily.
5.Automatic cleaning, no block, no adhesion: the complete purging design of V cone avoids the settlement of residue, coagulation or particle.
6.Long-standing favorable stability: the value of β can remain the same for long and the accurateness in measurement can be ensured for a long period.
7.High precision and good repeatability: accuracy:±0.5% F.S; repeatability:±0.1% F.S
8.Wide range of the value of β: the unique geometrical shape of V cone flow sensor allows wide range of the value of β.
9.Type specification complete, multi-choice of installation:pipeline, flange tapping, wafer and plug-in.
10.Wide range of nominal diameter: φ15~φ2000 (1/2"~120")or customize.
11.The ability to measure high temperature and high-pressure medium:maximum working temperature 700℃; maximum pressure 42MPa.
12.The ability to measure the dirty medium (coke-oven gas, blast furnace gas, feed stock and residual oil)
13.The ability to measure gas and liquid two-phase medium (moisture and condensed water)
Product classification and application
A:for installation: Pipe welding, flange , wafer and plug-in.
B:for pressure measurement methods:pressure tap, face flange pressure tappings, plug-in male flange pressure tappings
C:for medium and condition:basic type, high temperature and pressure type, temperature and pressure compensation type, anti-corrosive type and anti-adhesion type.
2.Application: metallurgy, chemical industry, Chemical fiber industry, petroleum, nature gas, power supply, Hydraulic, mines, machinery, materials industry , city energy, environmental monitoring.
nominal diameter: φ15~φ2000, flow rate:≥0.1m/s, working pressure:-0.1MPa~42MPa, working temperature:-160℃~700℃, environmental temperature≤85℃.
4.Applicate for many kinds of fluid:
Besides of normal gas ,liquid and steam,it also applicate for all kinds of gas,liquid and steam with high dust ,high suspended solids,high viscosity, strong corrosive,crystallize and supersaturated.
|Coal-gas:||coke oven gas, blast furnace gas, city gas||Oils:||crude oil, fuel oil,emulsified oil, diesel fuel|
|Nature gas:||≥5% moisture content nature gas||Water:||raw water, drinking water, polluted water|
|Hydrocarbon gas||alkanes, olefin||Various aqueous solutions||acid, lye, brine|
|Corrosive gases:||hydrogen, helium, argon, oxygen
|Air:||hydrous air, dusty air, compressed air|
|Flue gas:||boiler flue gas,furnace flue gas|
|Saturated steam||Oil +HC+sand|
|Superheated steam||H20+CO2 etc.|
Sichuan VACORDA Instruments Manufacturing Co., Ltd.is a professional production-manufacturing enterprise specialized in designing, producing and marketing of instruments and apparatuses. Our company has been established for 23 years since 1997 to grow up to be a team of high-quality, united, hard-working and truth-seeking characters. Solid foundation has been established.
Our company has got the ISO9001: 2000 international quality system certification in 2005, Import and export trading right in 2012, total 12 patents till 2016, the title of “national high-tech enterprise” and CE certificate for three categories product in 2014. Our company has owned trade marks as “vacorda”. At the same time, our company is preparing for more certificates for foreign market, such as IECEX, API, UL and so on, to lay a foundation for further international market.
Q1: Can I place sample order first?
A1: Yes, we will quote you different prices for small, medium and large qty. You can order with different price for different qty.
Q2: How could I pay them?
A2: PayPal, Western Union and T/T are preferred, so just tell us which is easier to you. Then we will send you our bank details. Or as your requirements.
Q3: How to place the order?
A3: Please send us your purchase order by e-mail, Trade Manager or Skype or you can ask us to send you a Proforma Invoice for your order.
Q4: How long can I get my order?
A4: For samples, we will finish production and ship within 7~10 working days. For bulk orders, usually 15~20 working days and depends on your design.
Q5: How to send us the products?
A5: We usually use DHL, UPS, FedEX to ship samples. For bulk orders, we support shipping by air or by sea.
Q6: Can you customize according to our designs and put our logo on the products?
A6: Yes, we support both standard and customized products and can put your logo on the products. Our experienced R&D team will support technical questions. ODM/OEM is welcome.