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technical article
Plastic tube float flowmeter is a common instrument used to measure the instantaneous flow of fluid
2012-3-14 13:50:53

价格,塑料管浮子流量计生产厂家____宗先生 电话:18015191899 Plastic tube float flow meter price, plastic tube float flow meter manufacturer ____ Mr. Zong Phone: 18015191899
Flow meters are mainly used in chemical, petroleum, light industry, medicine, fertilizer, chemical fiber, food, dye, environmental protection and scientific research departments to measure the flow rate of single-phase non-pulsating (liquid or gas) fluids. Anti-corrosive glass rotor flowmeter is mainly used to detect the flow of corrosive liquids and gaseous media, such as strong acids (except hydrofluoric acid), strong bases, oxidants, strong oxidizing acids, organic solvents and other corrosive gases or liquids Flow detection of media.

First, the use and characteristics of plastic tube float flow meter Float flow meter is a commonly used instrument to measure the instantaneous flow of fluid (liquid rest, gas). It is widely used in chemical, food, environmental protection, metallurgy, machinery, pharmaceutical and other production units and scientific research departments. It has the following characteristics:
1. High accuracy in measuring instantaneous flow;
2. The measurement range can reach 1:10;
3. Low pressure loss;
4. Simple structure, convenient operation and low price;
5. Suitable for the measurement of corrosive fluids.
工作原理在垂直的透明锥管内,装有可上下移动的浮子(转子),当液体自下而上流经锥管时,被浮子节流,在浮子上下游之间产生差压,浮子在此差压作用下上升。 Second, the working principle of the plastic tube float flowmeter is in a vertical transparent cone tube, which is equipped with a float (rotor) that can move up and down. When the liquid flows through the cone tube from bottom to top, it is throttled by the float, which occurs between the upstream and downstream of the float Differential pressure, the float rises under the effect of this differential pressure. When the force that causes the float to rise is equal to the combined forces of the gravity, float, and viscous force on the float, the float is in an equilibrium position, so the fluid flow through the flowmeter and the rise height of the float There is a certain proportional relationship between the circulation areas. The position height of the float can be used as a flow measurement. The relationship is as follows:
In volume flow formula: а—flow coefficient
ε—expansion coefficient △ F—the flow area is the area of the ring gap between the cone and the float
Vt—Float volume
ρf—the density of the float material
ρ—Density of measured flow
结构本厂生产的玻璃转子流量计分为基型和防腐型两大类,它们通常由锥管、浮子、与管路连接的上、下基座、密封胶环、防护罩等配件组成,根据通径及流量大小,分为三种结构形式。 F1—The cross-sectional area at the working diameter of the float III. Structure of the plastic tube float flowmeter The glass rotor flowmeters produced by our factory are divided into two types: basic and anticorrosive.They are usually composed of cones, floats, and pipes connected to the pipeline. The upper and lower base, sealant ring, protective cover and other accessories are composed of three structural forms according to the diameter and flow rate.
1, N3, DN4, DN6, DN10 and other four diameter and pipe connection types due to small flow rate are divided into two types of hose connection and screw connection. Its structure and connection
1. Outflow mouth;
2. Base;
3. Press the cap tightly;
4. Conical glass tube;
5. Organic cover;
6. Support plate;
7. Float;
8. Press down the cap;
9. Lower base;
10. Flow into the mouth;
11. Needle valve.
Table 1
Caliber (mm) Dimensions (mm)
ABCDE
3 115 140 Ф6 22 * 26 (front)
4 170 208 238 Ф9 37.5 * 33 (front)
6 170 208 238 Ф9 37.5 * 33 (front)
10 170 208 238 Ф12 37.5 * 33 (front)
2. DN15, DN25, DN40, DN50, DN80, DN100 and other six diameter and pipe connection types are flange connection. Due to the large measurement flow, guide rods are designed in the middle of the float to prevent the float from damaging the cone.
3, anti-corrosion type flowmeter, according to the requirements of the measurement medium, using the appropriate corrosion-resistant materials to meet the user's process requirements.