FIELD: drilling equipment engineering.
SUBSTANCE: method includes mounting of nipple into sleeve and screwing them together. Value of negative tension in connection is determined on basis of distance measured along circle arc along outer surface of lock on basis of following formula: 
where ΔH is value of negative tension of lock connection, 
- arc length along outer perimeter of lock, on which correction angle of nipple takes place relatively to sleeve after start of mutual contact of their stopping surfaces, P - lock thread step, K - thread obliquity; α - lock thread coils profile angle D - lock outer diameter.
EFFECT: higher precision and adaptability to streamlined manufacture.
5 dwg
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| 0 |
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