PP material (chemical name polypropylene) is a semi-crystalline thermoplastic made by the catalytic polymerization of propylene. Polypropylene belongs to the category of polyolefins. Polypropylene (PP) is a general-purpose plastic with a good balance of properties, and it has excellent chemical resistance, high purity, low water absorption and good electrical insulation properties. In addition, PP material is lightweight and weldable.
Polypropylene has high mechanical strength and tensile strength, but has low notched impact strength, can resist stress cracking, is easy to weld, and becomes brittle at sub-zero temperatures. The chemical and electrical properties are very good, and the continuous working temperature is between +5°C and +100°C
The forms of polypropylene products that HONY can use for machining include:
PP rod
PP sheet
PP pipe
Round rod
Hollow rod
Square tube
L profile
U profile
handle hinge
Plastic welding wire
Feature
Excellent chemical resistance
Low density <1g>
high purity
Very low moisture absorption
High thermal expansion
No stress crack formation
Low toughness in the sub-zero temperature range, sensitive to impact
Application
Pump
valve
Gasket
Coating industrial support
Electroplating gasket
Toy parts
Polypropylene Pp Sheets,Pp Sheet Extrusion,Fire Retardant Pp Sheet,Sheet Polypropylene Hony Engineering Plastics Co.,Ltd. , https://www.honyplastic.com
The drive coil and the feedback circuit vibrate at its resonant frequency, and the resonant frequency of the vibrating tube is related to the structure, material and quality of the vibrating tube. The quality of the vibrating tube consists of two parts: the mass of the vibrating tube itself and the mass of the medium in the vibrating tube. The quality of the vibrating tube itself is determined after each sensor is produced. The mass of the medium in the vibrating tube is the product of the medium density and the vibrating tube volume, and the volume of the vibrating tube is fixed for each type of sensor. The vibration frequency is directly related to the density. For sensors that determine structure and material, the density of the medium can be obtained by measuring the resonant frequency of the flow tube.
When using a wedge flowmeter , if a small amount of gas is stratified or wavy in the water pipe, the fault phenomenon shows an increase in error, that is, the flow measurement value does not match the actual value; if the flow is a bubble flow or a plug flow, the failure phenomenon If the measured value does not match the actual value, the output sloshing may occur due to the instantaneous covering of the electrode surface by the gas phase; if the gas phase of the cross-sectional area of ​​the horizontal pipe is increased in the stratified flow, that is, the liquid is not full, the output sloshing may also occur. If the liquid is not full, the liquid level is below the electrode, and the output is full.
Analysis of working principle of wedge flowmeter
When the fluid flows into the flow tube, it is forced to receive the vertical movement of the flow tube. During the half cycle of the upward vibration of the flow tube, the fluid resists the upward movement of the tube and applies a downward force to the flow tube; otherwise, the fluid pair of the wedge flow meter The flow tube exerts an upward force to counteract the downward movement of the tube to reduce its vertical momentum. This causes the flow tube to distort, and during the other half of the vibration, the flow tube vibrates downward, and the twist direction is reversed.