FIELD: oil-and-gas industry.
SUBSTANCE: device to inject low-pressure gas in pressurised fluid flow is composed of confuser-diffuser Venturi-profile nozzle with injection slit in contraction zone. It comprises confuser, diffuser, gas feed inlet pipe arranged in said contraction zone and communicated with injection slit to create mixing zone in fluid flow. Said injection slit is composed by confuser nozzle outer conical surface and diffuser inlet inner curved surface. Note here that diffuser inlet minimum diameter makes 1.0-1.15 of confuser nozzle diameter.
EFFECT: higher pressure recovery factor at maximum gas flow rate.
2 dwg
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