CAVITATOR FOR UNDERWATER CLEANING OF CLOGGED SOLID BODY SURFACES Russian patent published in 2005 - IPC

FIELD: earth and rock drilling, particularly for treating colmatage solid body surfaces, namely for cleaning filters and water and oil well walls by cavitating high-pressure liquid jet, as well as for underground cavitator creation.

SUBSTANCE: cavitator comprises through channel with profile defined by coaxially arranged and connected in series inlet contraction tube, cylindrical channel and outlet diffuser. Cavitator is located in cylindrical channel of well filter. Liquid flow stabilizer arranged in cylindrical channel of the cavitator is formed as cellular body composed of equally sized longitudinal plates having ℓ₂ lengths defined as 2<ℓ₂<2.6d_k, where d_k is diameter of inlet cylindrical channel part. Plates form even number of cells having equal areas. Distance ℓ₁ from inlet cylindrical channel end to liquid flow stabilizer is determined from 2.8<ℓ₁<3d_k. Distance ℓ₃ between outlet cylindrical channel end and liquid flow stabilizer is defined as 2.4<ℓ₃<2.6d_k. Inlet diameter of the outlet diffuser d_D exceeds outlet channel diameter.

EFFECT: increased cavitation degree, increased working jet length due to elimination of disturbing factors and improved hydrodynamic characteristics.

6 cl, 2 dwg