锥管等主部件均由AS、ABS塑料制成，有较好的耐腐性能，产品还具有结构合理、体积小、重量轻、锥管不易破碎等特点，塑料管转子流量计可广泛应用于化工、环保、食品等工业部门。 LZB-() S plastic tube rotor flowmeter cone and other main components are made of AS, ABS plastic, have good corrosion resistance, the product also has reasonable structure, small size, light weight, cone tube is not easy to break Features, plastic tube rotor flowmeter can be widely used in chemical, environmental protection, food and other industrial sectors.
Principle and structure
The main measuring element of the plastic tube rotor flowmeter is a conical plastic tube with a small end facing downward and a large end facing upward, and a float that can move up and down inside. When the fluid flows through the conical plastic tube from bottom to top, a pressure difference occurs between the upper and lower parts of the float, and the float rises under the action of this differential pressure. When the force that causes the float to rise is equal to the combined forces of gravity, buoyancy, and viscous force, the float is in an equilibrium position. Therefore, the fluid flowing through the flowmeter
There is a certain proportional relationship between the flow rate and the rising height of the float, that is, the flow area of the flow meter. The position height of the float can be used as a flow measurement.
安装 LZS plastic tube rotor flowmeter installation
(1) Before installation, the smooth support in the instrument should be gently removed with tool-nosed pliers, and then reinstalled. When installing, pay attention to whether the rubber ring is installed in the groove of the pipe to prevent it. Leaking.
(2) The interface of the flowmeter can be matched with ABS plastic pipe or PVC plastic pipe with special dewatering adhesive connection. It can also be connected by plastic method and then connected with metal flange.
(3) The flowmeter must be installed vertically, without obvious tilt, and its installation height should be convenient for reading the float. When reading, the line of sight and the float should be horizontal. (General standard: The optimal flow rate required is the maximum flow rate of the flow meter.
50% 70%, try not to use the highest number. )
(4) At the upstream and downstream of the meter, the inlet and outlet of the meter shall ensure a straight pipe section with 5 times the meter diameter.
(5) The pressure of the measured fluid must be stable. If the fluid pressure is unstable, it will cause the float to fluctuate and cannot be measured correctly. A buffer or a setter should be set upstream of the flow meter.
日常使用： LZS plastic tube rotor flowmeter daily use:
When the flowmeter is in use, slowly open the upstream valve to full open, and then use the regulating valve downstream of the flowmeter to adjust the flow.
(Prevent the float from suddenly impacting upwards and damaging the meter, and avoid sudden changes in the measured body temperature. If a leak is found in the flowmeter during use, the seal ring is generally misplaced or invalid, and it should be corrected or replaced.)
When the flowmeter is stopped, the upstream valve should be closed slowly first, and then the flow regulating valve downstream of the flowmeter should be closed.