33results about How to "Large liquid flow" patented technology

A novel propellant management device used in a propellant storage box comprises a central supporting column, flow guide blades, supporting column blades, large blades, liquid storage blades, an upper pressing plate, an upper mesh, an upper supporting plate, small cylinders, a framework, a lower pressing plate, a lower mesh and a lower supporting plate, wherein the flow guide blades, the supporting column blades and the large blades are all fixedly mounted on the central supporting column in the radial direction to form an integral structure, the integral structure is fixedly mounted on the upper pressing plate through the central supporting column, the supporting column blades and the large blades are mounted in the same plane, and a mounting plane of each flow guide blade and a mounting plane of each large blade form a certain included angle; the liquid storage blades are fixedly mounted on the upper pressing plate in the radial direction; the upper pressing plate, the upper mesh, the upper supporting plate, the small cylinders, the middle framework, the lower pressing plate, the lower mesh and the lower supporting plate are sequentially fixedly mounted from top to bottom to form the integral structure, namely, a liquid accumulation assembly. The novel propellant management device has the inhibition function on shaking of liquid, performs comprehensive management on propellants and is simple in structure, high in strength and reliability and large in liquid storage capacity, the on-orbit work application range is large, the on-orbit liquid discharge speed is high, and meanwhile, repeated large-flow filling on the ground can be realized.

The invention discloses a method for purifying ship ballast wastewater, comprising the following steps: S1. forming an electric field in a space between a high-voltage electrode and a ground electrode; S2. high-pressure gas in a high-pressure gas cylinder entering the electric field space through a gas flow control valve, A plasma jet is formed and sprayed; S3. The liquid to be treated in the liquid reservoir is sprayed in the form of a spray under the action of a liquid processor after passing through a liquid flow control valve, a filter and a flow meter, and all the spray fields pass through The non-equilibrium plasma jet area; S4. Under the action of the non-equilibrium plasma jet, the target purifying substances contained in the droplet particles in the atomization field are killed; S5. The detection port control valve is opened, and the detection port return pump will The purified liquid is drawn out and sent to the detector; S6. The detector analyzes the purified liquid. A detection mechanism is added to further improve the purification effect.

The invention relates to a continuous membrane treatment method for alkali squeeze liquid in the viscose fiber production process, including the steps of material preparation, feeding, and system operation; wherein, in the process of system operation, a cleaning step is also included: the first stage The nanofiltration membrane module is switched out from the nanofiltration membrane system for cleaning, other nanofiltration membrane modules are operating normally, and the alkali squeeze liquid or the concentrated liquid produced by the upper nanofiltration membrane module skips the cleaning nanofiltration membrane module. After cleaning, the nanofiltration membrane module is connected back to the nanofiltration membrane system in series; and so on, the nanofiltration membrane modules at all levels are cleaned separately. The invention is a set of continuous membrane treatment process with automatic operation and cleaning, which changes the batch intermittent operation mode adopted by the traditional technology, can effectively improve the utilization rate of the nanofiltration membrane, reduce the cleaning times of the nanofiltration membrane, and prolong the service life of the nanofiltration membrane .

The invention provides a hydrodynamic radial bearing provided with an axial-flow pressurizing structure and a centrifugal pump. The hydrodynamic radial bearing comprises a shaft sleeve and a bearing body matched with the inside of the shaft sleeve; the bearing body comprises two opposite end surfaces and a side surface located between the two opposite end surfaces; and the axial-flow pressurizingstructure is arranged on the side surface of the bearing body, is close to at least one of the two opposite end surfaces and is far away from the central area of the side surface. Compared with the prior art, the hydrodynamic radial bearing has the advantages that a pressurizing device is added to the front part of the hydrodynamic radial bearing, the cavitation phenomenon which is caused easily in a general hydrodynamic bearing is restrained, and the reliability of the bearing is improved remarkably.

A tank car charging and discharging system belongs to railway tank car pneumatic operations and remotely monitored top loading and bottom unloading. The tank car charging and discharging system comprises a charging and discharging device disposed at the bottom of a tank car and an overcharge automatic protection device (9) disposed on the top of the tank car. During medium loading on the tank car, when the medium reaches a preset height, the overcharge automatic protection device (9) provides a signal for ground equipment, and ground operation personnel decide to turn on or turn off the charging and discharging device according to the signal. The tank car charging and discharging system is high in safety, strong in reliability, and good in accuracy.