main
English
Contact Supplier
More Products
Principle of elliptical gear flowmeter
1、 Xiamen JingchuanOGFPrinciple of elliptical gear flowmeter Product overview:
OGFThe principle of the series elliptical gear flowmeter is a type of volumetric flowmeter, which is particularly suitable for measuring the flow rate of high viscosity media such as heavy oil, diesel, lubricating oil, polyvinyl alcohol, resin, etc. Therefore, the elliptical gear flowmeter is generally also known as an oil meter, which can directly read the total flow rate of liquid flowing through the pipeline. Widely used in industries such as petroleum, chemical, and pharmaceutical.
2、 Xiamen JingchuanOGFWorking principle of elliptical gear flowmeter:
OGFThe measuring part of the series elliptical gear flowmeter mainly consists of two interlocking elliptical gears and their housings(Measuring Room)Composed of elliptical gears, the pressure difference of the measured medium△p=pl-p2Under the action of, a torque is generated to make it rotate. in(a)When in the indicated position, due toP1>P2, inP1andP2The resultant torque generated by the action of the wheelAGenerate clockwise rotation and turn the wheelAThe medium inside the half moon area between the shell is discharged to the outlet and driven by a wheelBRotate counterclockwise, at this pointAFor the driving wheel,BFor the driven wheel, in(b)The middle position is shown above,AandBAll are active wheels; And in（c）At the position shown above,P1andP2Effect onAThe resultant moment on the wheel is zero, acting onBThe resultant torque on the wheelBRotate the crop counterclockwise and discharge the medium that has been sucked into the half moon scale to the outlet. At this pointBFor the driving wheel,AFor the driven wheel, and(a)The situation shown above is exactly the opposite. This cycle repeats, and the wheelAHe LunBAlternating with each other, one drives the other to rotate, and the measured medium is discharged from the inlet to the outlet in half moon volume units. Obviously, as shown in the figure(a)The(b)The(c)As shown, it only indicates that the elliptical gear has rotated1/4The situation is that the measured medium discharged by the elliptical gear is a half moon shaped volume. Therefore, the measured medium mass per revolution of the elliptical gear is described as a half moon product4If multiplied, the volumetric flow rate will be measured using an elliptical gear meteor gaugeQFor:Q=4nυ0 Where:n——Rotation frequency of elliptical gears(turn/second)；
υ0——The volume of the crescent shaped part(Bei.)．
In this way, the half moon shaped volume of the elliptical gear flowmeterυ0Under certain conditions, as long as the rotational speed of the elliptical gear is measurednYou can know the flow rate of the measured medium.
3、 Xiamen JingchuanOGFPrinciple of elliptical gear flowmeter Product features:
High measurement accuracy, wide flow range, and good repeatability;
Spiral rotor rotates uniformly, with minimal vibration and long lifespan;
Not sensitive to changes in viscosity of the measured liquid, especially suitable for measuring liquids with high viscosity;
Simple structure, small external dimensions, and light weight;
Easy to install, no need to install straight pipe sections in front of the meter;
4、 Xiamen JingchuanOGFPrinciple and technical parameters of elliptical gear flowmeter:
1Accuracy level:0.5Level,0.2Grade (usually in-10-60Degree);
2Applicable medium temperature:-20-80Degree, can be reached with the addition of a radiator200Degree;
3Nominal pressure: minutes1.0、1.6、2.5、4.0、6.4Five pressure levels;
4Viscosity of the tested liquid:0.6 — 200 MPa. sHigh viscosity can reach200---3000 MPa.s;
5Material: divided into cast iron type, cast steel type, and stainless steel type;
OGF-Atype Cast iron elliptical gear flowmeter, widely used for measuring various oil products and non corrosive liquid media of cast iron;OGF-Etype Cast steel elliptical gear flowmeter, used for measuring high-pressure and low corrosive media;OGF-Btype Stainless steel elliptical gear flowmeter is widely used for measuring highly corrosive liquid media such as acids, alkalis, salts, and organic compounds;
6Measurement range:
flow quantity Fan enclosem3/h
model
OGF-Acast iron
OGF-Ecast steel
OGF-Bstainless steel
Nominal diameter/precision
0.5
0.2
10
0.04～0.4
0.1～0.4
0.1～0.5
15
0.25～1.5
0.3～1.5
20
0.5～3
0.6～3
25
1～6
1.2～6
40
2.5～15
3～15
50
4～24
4.8～24
65
5～40
8～40
80
10～60
12～60
100
16～100
20～100
150
32～190
38～190
200
34～340
68～340
5、 Xiamen JingchuanOGFPrinciple and instrument selection of elliptical gear flowmeter: OGF
pipe diameter Instrument type Instrument material signal output
1Pipe diameter:DN10/15/20/25/40/50/80/100/150/200
2Instrument type: divided into standard types（1）High temperature type（2）High viscosity type（3）；
3Instrument material: divided into cast iron type（A）Cast steel type（B）And stainless steel type（C）；
4Signal output mode: divided into no signal output（1）Pulse output（2）And4-20mA（3）；
Example of Selection OGF-50/1/1/3
Successful operation!
