Forum Posts

yibomine 17777777777
Jul 15, 2021
In General Discussions
The principle of pumping groundwater by steam ejector is to use steam or other power medium to generate strong power through the nozzle of the equipment to suck in the water at the low pressure port, and then phase change occurs. After the water is completely mixed in the mixing section of the equipment, it is discharged from the equipment. Because the speed can change the pressure energy, the drainage pressure can be increased to achieve the purpose of pumping water Pay attention to the following points in the design of the steam ejector: suction depth and discharge pressure, steam consumption As a user, steam is more expensive, and the less it is, the more energy saving it will be From our current experience, generally let customers control in the vertical height within 7 meters, sometimes in 8 meters Then we consider that the outlet pressure is generally 5 kPa gauge pressure and the corresponding saturated water temperature is 102 ℃ We calculate the amount of steam, in turn, push the outlet temperature of water If the customer requires the drainage pressure to be higher, we must control the saturation temperature of water when we increase the amount of steam, that is, the amount of steam can not be too much, resulting in water vaporization According to experience, if customers require high outlet pressure, we usually reduce the height of vertical absorption (1m above the liquid level), so as to increase the outlet pressure There are many types of working conditions in each group, and we optimize the design around the principle of energy conservation Steam ejector in burning area of important application
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yibomine 17777777777
Jul 14, 2021
In General Discussions
With the continuous expansion of vacuum technology in various application fields, the demand for direct connected rotary vane pump is increasing. Some foreign vacuum manufacturers have set up professional factories in China because of the large number of pumps, heavy workload of processing and installation, and low quotation. The vacuum pump is a rotary variable volume pump, which can only be used with the previous pump. It has a large pumping speed in a wide pressure range. However, generally speaking, there are two reasons for fuel injection in the exhaust hole of Rongxiang vacuum pump One is that the sealing solvent is too large, and the vacuum pump is too small. The second is the excessive vacuum refueling, which causes the vacuum pump to eject with the exhaust port in the process of operation. Vacuum pump is developing rapidly. Due to the high-speed friction between the vane and the pump body, the oil is easy to be oxidized and decomposed. Especially the diffusion pump often works in high temperature environment, which increases the steam pressure and reduces the vacuum degree in the system. Therefore, the vacuum pump oil is required to have good thermal oxidation stability. Domestic small and medium-sized direct rotary vane pump has passed the technical standard, and the price is far lower than that of foreign pumps, so domestic pumps still have competitive advantages. The key is to deal with the leakage of shaft seal, the function and quality of rotary vane material and vacuum pump oil, ensure the stable and reliable operation of direct connected rotary vane pump under high speed and high temperature, and further improve the water vapor removal ability of domestic direct connected rotary vane pump. Vacuum Pump Heat Treatment Guide,Heat Treatment Equipment Liquid Ring Vacuum Pump
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