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This post was last edited by Desert Fish on 2019-1-31 at 16:41. Do you know how this device works? ?
It looks like a Venturi mixer
A steam ejector is a specialized device used to increase the pressure of low-pressure steam. The principle is to use the high-speed airflow generated by high-pressure steam injection to increase the pressure and temperature of low-pressure steam or condensed water flash vapor, while reducing the pressure and temperature of the high-pressure steam. This raises the pressure and temperature of the low-pressure steam to the levels required by the production process, thereby achieving energy savings. Reuse of low-pressure steam by pressure increase: Some factories use steam at several different pressures, and the heat sources available are not sufficient to meet all the demands. In such cases, a steam-jet heat pump can be used to increase the pressure of some of the low-pressure steam, thereby meeting the needs of industrial production. Applications Steam ejectors can be used in the following areas: Reusing low-pressure steam by increasing its pressure: Some factories use steam at various pressures, and the heat source available is not sufficient to meet all the needs. In such cases, steam ejector heat pumps can be used to increase the pressure of some of the low-pressure steam, thereby meeting the requirements of industrial production. Recycling of equipment exhaust steam: Some steam-using devices cannot have their exhaust steam reused due to low exhaust pressure. Steam jet heat pumps can be used to increase the pressure of the exhaust steam and integrate it into the steam supply network, thereby enabling the recycled use of the exhaust steam. Recovery of flash vapor: The flash vapor recovery system is shown in Figure 2. The flash vapor generated when condensate enters the flash tank is absorbed by a heat pump, pressurized, and supplied for use in production or domestic purposes. Advantages The steam ejector has the following advantages: it has a simple structure, no rotating parts, which results in a long service life and reliable operation. Easy to operate, simple to maintain, with automatic adjustment to ensure stable outlet pressure. It offers significant energy-saving effects. It is easy to install, allowing for horizontal or vertical installation; the connection to pipelines is made via flanges, which facilitates disassembly. Main performance indicators and parameters The performance indicator of a steam ejector is the induction coefficient. Induction coefficient μ = suction steam flow rate/driving steam flow rate ; The value of the induction coefficient is related to the main parameters of steam-jet heating. Main parameters Expansion ratio = PP/PH ; Compression ratio = PC/PH ; PP—Driving steam pressure; PH—Induction steam pressure; PC—Mixed steam pressure. The structural dimensions of the steam ejector need to be designed and manufactured separately based on the user’s steam parameters. Ordering Instructions: The following relevant process parameters must be provided when signing the contract: drive steam pressure, temperature, and flow rate ; Induction steam pressure, temperature, flow rate ; Combined outlet pressure, temperature, and flow rate. Control method: Select manual or automatic control device as needed.
Whether it is a mixer or a vacuum pump, it generates negative pressure through the high-speed flow of a motive fluid, thereby introducing another gas medium.
A power-free mixer – it’s really amazing to think about the ingenuity of its designers back then