Petrochemical anti-loosening nut

Abstract

The invention discloses a petrochemical anti-loosening nut. The petrochemical anti-loosening nut comprises a first locking nut, a driving nut and a second locking nut, wherein the driving nut comprises a first pressure returning part, a first driving hexagonal part, a second driving hexagonal part, a third driving hexagonal part, a second pressure returning part and a driving straight slot; the first locking nut comprises a first locking hexagonal part and a first tightening part; the second locking nut comprises a second locking hexagonal part and a second tightening part; the driving nut, the two locking nuts and the bolt are tightly fixed together through a transverse tightening force between the two tightening parts and a transverse pressure returning force between the two pressure returning parts; and an anti-loosening effect is further achieved through a thread which drives the hexagonal part to deform. The petrochemical anti-loosening nut is simple in integral structure, good inanti-loosening effect and great in strength.

Description

【Technical field】 [0001] The invention relates to the technical field of nuts, in particular to the technical field of a petrochemical locknut. 【Background technique】 [0002] The nut is one of the most widely used fasteners. It is used together with the bolt of the same specification. If the bolt is unscrewed from the nut, the two parts can be separated, so the connection is a detachable connection. [0003] In the oil field, bolts and nuts are often used to connect oil pipelines. During the transportation of oil pipelines, oil is often poured on the surface of the pipeline, so that the connecting bolts are immersed in oil. Commonly used bolts include screws and nuts. The surface of the screw There are external threads, and internal threads are provided on the inner wall of the nut. The external threads of the screw are matched with the internal threads of the nut. The oil on the surface of the bolt, after passing through the external threads and internal threads, will make...

AI Technical Summary

Problems solved by technology

[0003] In the oil field, bolts and nuts are often used to connect oil pipelines. During the transportation of oil pipelines, oil is often poured on the surface of the pipeline, so that the connecting bolts are immersed in oil. Commonly used bolts include screws and nuts. The surface of the screw There are external threads, and internal threads are provided on the inner wall of the nut. The external threads of the screw are matched with the internal threads of the nut. The oil on the surface of the bolt, after passing through the external threads and internal threads, will make the connection between the screw and the nut It becomes unreliable. When the pipeline encounters vibration, the nut is easy to slip from the screw rod. In severe cases, it will fall off from the screw rod. The working environment of the bolts used in oil drilling and related auxiliary equipment is poor. If some key parts If the bolts are loose, it will affect the normal operation of the equipment and may even cause a safety accident

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