Hydraulic jet impacter

Abstract

The invention provides a jack-tightening and sealing mechanism of a hydraulic jet impacter, belonging to the fields of geological mineral exploration engineering and petroleum drilling. The device comprises an upper connecter, a disc spring frame, a disc spring, a seal ring, an adjusting washer and a fluidic element. The maximum working load of the disc spring can be obtained through calculation and then software design and simulation are adopted to obtain the specification of the disc spring which meets the requirement of the static strength and the fatigue strength simultaneously, thus the phenomenon that the cylinder body deforms and the piston is locked and can not move flexibly caused by over-tight axial assembly, and the phenomenon that high pressure mud leaks and the end faces of each part are eroded caused by over-loose axial assembly and over-low set pretightening force, in the test and application process of the existing hydraulic jet impacter is solved. In addition, a vertical overflowing section is arranged above the inlet structure of the fluidic element; and a radial seal ring is added between the disc spring frame and the fluidic element, thus the fluid transition structure between the fluidic element and the disc spring frame can be optimized and the service life of the fluidic element can be increased.

Description

technical field [0001] The invention belongs to the fields of geological prospecting engineering and oil drilling, and in particular relates to a hydraulic jet impactor. Background technique [0002] The jet components assembled inside the outer cylinder of the impactor, the cylinder block, the cylinder head, etc. are the core components of the impactor. There are machining errors in their axial dimensions, and error accumulation will occur during assembly. The traditional method to eliminate the accumulated error is to select an adjusting washer with an appropriate thickness to absorb the internal deformation of the tool. [0003] This is the traditional practice in the past, but the torque of the drilling tool will change during the work of the impactor in the well, and the tightening degree of the thread on the drilling tool will also change, resulting in a change in the jacking force of the components assembled in the outer cylinder. Changes, cylinder deformation, pisto...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art, and to provide a hydraulic jet impactor, which solves the deformation of the cylinder and the piston caused by the axial assembly too tight in the test application process of the previous jet type hydraulic impactor. The phenomenon of being stuck and unable to move flexibly, and the phenomenon of high-pressure mud leakage due to too loose axial assembly and too small pre-tightening force setting, which will cause erosion on the end faces of each component, and at the same time strengthen the sealing performance and improve the life of the components

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