52results about How to "Reduce air pulsation" patented technology

The invention provides a screw compressor slide valve having a gas flow pulsation attenuation function. The slide valve mainly comprises a wall surface and a slide valve through hole. On the one hand,exhaust of a screw compressor is directly discharged into an exhaust chamber via an exhaust orifice to form a main flow channel, and on the other hand, the exhaust is discharged into the exhaust chamber from the exhaust orifice through a slide valve through hole gas flow passage in a delayed manner to form a lateral flow channel. The gas flow passage inside the slide valve is relatively long, when the phase of the gas flow pulsation inside the lateral flow channel lags behind the phase inside the main flow channel by 180 degrees, the gas flow pulsation inside the lateral flow channel and thegas flow pulsation inside the main flow channel offset each other due to the opposite phases, the gas flow pulsation of the screw compressor is attenuated, and the vibration noise caused by the gas flow pulsation of the exhaust of the compressor is suppressed. According to the slide valve, the gas flow pulsation attenuation effect of the screw compressor slide valve is only related to the depth ofthe through hole inside the slide valve, the influence caused by the content of a lubrication medium inside the exhaust gas to the gas flow pulsation attenuation effect is eliminated, and the slide valve has the characteristics of simple structure, low pressure loss, high practical practicability, good vibration and noise reduction effect and the like.

The application discloses a fan impeller, which includes a plurality of blade teeth. The blade teeth have a blade crest. The outer surface of the blade crest is a circular arc surface. The distance from the top of the rib to the center of the impeller is equal to the radius of the impeller. The wide rib makes the blade top have a larger machining area, which can allow / adapt to the larger "error rate" of the CNC lathe, and facilitate the subsequent reprocessing process, so that it can Precisely machining the impeller with "the distance from the tip to the center of the impeller equal to the radius of the impeller" makes up for the "deviation" problem in the process from theoretical design to product molding. The present application also provides a fan, including a casing and an impeller arranged in the casing and adapted to the casing. The impeller is the fan impeller as described above, which not only facilitates the processing and manufacture of the fan, but also seals the impeller and the casing. Good, low leakage, low fan noise, smooth operation, high stability and wear resistance, long service life.

The invention discloses a system for adsorption and pressure-boosting recovery of volatile organic compound steam in oil gas. The system comprises an oil storage tank, wherein the oil storage tank is connected with the gas inlet of a condensate separation tank through a first pipeline; the two gas outlets of the condensate separation tank are connected with a liquefaction device and an adsorption tank through a second pipeline and a third pipeline respectively; the liquid outlet of the condensate separation tank is connected with an oil storage tank through a fourth pipeline; the liquefaction device is connected with the first pipeline through a fifth pipeline; the adsorption tank is connected with the liquefaction device through a sixth pipeline; a vacuum pump is arranged on the sixth pipeline; the liquid outlet of the liquefaction device is connected with the fourth pipeline through a seventh pipeline; the liquefaction device is connected with the gas inlet of a liquid separation tank through an eighth pipeline; the gas outlet of the liquid separation tank is connected with the fifth pipeline through a ninth pipeline; the liquid outlet of the liquid separation tank is connected with the fourth pipeline through a tenth pipeline. The system has the advantages of adopting such a technological mode that discharged air is firstly adsorbed, and being simple in technology, low in investment cost, and high in safety, and a liquid recovered oil product can be visually observed.