Rotary power exchanger with extended inflow angle structure

Abstract

The invention discloses a rotary power exchanger with an extended inflow angle structure, and belongs to the technical field of fluid residual pressure recycling. The exchanger comprises a rotor, an upper stator and a lower stator which are positioned at the two ends of the rotor, and a rotor sleeve, wherein the stators are provided with inflow liquid collecting slots with extended angle structures, so that pressure gradient is remarkably reduced when speed is in gradient change in a switching process among a high-pressure communication region, a sealing region and a low-pressure communication region of a duct, and therefore, jet-flow mixing of the liquid can be effectively reduced. The rotary power exchanger disclosed by the invention is reasonable in inflow structure design, simple and convenient to manufacture, and capable of effectively restraining jet-flow mixing in the duct and guaranteeing concentration quality of a first liquid pressurized in a pressure energy transmission process, so that a concentration value at a high-pressure outlet is within a stable range, and the efficient operation of the power exchanger and a membrane system is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of fluid residual pressure recovery, and relates to a rotary work exchanger for recovering liquid pressure energy, in particular to a rotary work exchanger with an extended inlet angle structure. Background technique [0002] In the process industry, there are a large number of high-pressure fluids with recoverable residual pressure, and their pressure energy can be recovered through work exchangers. According to the working principle, the power exchange device can be divided into two types: turbine type and volume type. [0003] The turbine type work exchanger relies on high-pressure fluid to impinge on the impeller, which is connected to the booster pump through a shaft. The high-pressure liquid energy undergoes secondary conversion of "pressure energy-mechanical energy (shaft work)-pressure energy", and finally transfers the recoverable residual pressure to the low-pressure fluid that needs to be pressur...

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Problems solved by technology

Chinese patent (CN101821482A) discloses a four-port rotary work exchange device in which the low-pressure inflow liquid flows in a straight line in the stator liquid collection tank. Rely only on high pressure inflow fluid

[0006] U.S. Patent (US6773226) and Chinese Patent (CN101925749A) disclose a work exchanger with a spherical piston in the rotor hole. This design can completely block the contact and mixing between different fluids in theory, but the introduction of the physical piston , not only occupies the space of the channel, reduces the volumetric efficiency of the channel, but also increases the friction and impact between the sliding parts, making the structure complex and poor in reliability, so this structure is difficult to be applied in practice

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