1, the main technical performance of the vacuum pump (such as vacuum) to meet the design requirements or process requirements, auxiliary equipment (condenser, etc.) complete; not prepared smooth operation, normal sound, no overheating, closed well. 2, rotary vane vacuum pump equipment lubrication system intact, lubricants meet the regulatory requirements, and regularly check, oil change. 3, all kinds of instruments (such as vacuum gauges, etc.) indicate the correct value, and regularly check; each valve opening and closing flexible, good seal, no leakage; pipeline leaks and regular inspection. 4, the motor is equipped with reasonable, normal operation (normal temperature and sound), electrical lines safe and reliable, ground protective measures, electrical installations (control cabinet) reliable, electrical instrumentation instructions; safety guards are complete. 5, equipment and cooling system clean and tidy, no rust. 6, water ring vacuum pump cooling system is operating normally, the cooling device intact, the drainage temperature does not exceed the required requirements, there should be water protection device. In general, the working fluid used is water. The energy acting on the rotor impeller is received by the liquid and transferred to the compressed gas, thus causing the temperature of the water ring to rise. A portion of the water in the ring is compressed with the gas to exclude the pump. Most of the heat generated during the compression is taken away. Therefore, it is necessary to constantly replenish the fresh water so that the working temperature of the water ring pump can be kept constant. In most water ring vacuum pumps, the operating temperature is about 15-20 ° C, depending on the temperature of the water being replenished. In fact, the ultimate pressure of the water ring pump is not very important, because different liquids, when the pressure is lower than 50-60hPa, cavitation will occur, the pump parts will be damaged. When the pump approaches the limit pressure, the pumping speed is very low and the water at the pump inlet starts to boil. As you go to the outlet of the pump, the bubbles that form begin to crack. This will produce a lot of noise, while the pump drive wheel and pump chamber and other components are gradually destroyed. This phenomenon is commonly referred to as cavitation. Once cavitation occurs, introduce a small amount of fresh air through the valve. In this case, a hole was made in the entrance gate to allow for some fresh addition to the volume, and cavitation did not occur if a gas jet was used.
Ultrasonic Flow Meter
Here you can find the related products in Ultrasonic Flow Meter, we are professional manufacturer of Ultrasonic Flow Meter,Portable Flow Meter,Portable Ultrasonic Flow Meter,Ultrasonic Flow Measurement. We focused on international export product development, production and sales. We have improved quality control processes of Ultrasonic Flow Meter to ensure each export qualified product.
If you want to know more about the products in Ultrasonic Flow Meter, please click the product details to view parameters, models, pictures, prices and other information about Ultrasonic Flow Meter,Portable Flow Meter,Portable Ultrasonic Flow Meter,Ultrasonic Flow Measurement.
Whatever you are a group or individual, we will do our best to provide you with accurate and comprehensive message about Ultrasonic Flow Meter!
Ultrasonic Flow Meter,Portable Flow Meter,Portable Ultrasonic Flow Meter,Ultrasonic Flow Measurement
Xi'an Gavin Electronic Technology Co., Ltd , https://www.gaimc-meas.com