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Hydraulic in-the-hole hammer with dual nozzles and combined valve

A technology of hydraulic down-the-hole hammer and compound valve, which is applied to the drilling driving device, drilling equipment, earth-moving drilling and mining in the wellbore, etc. Effect

Inactive Publication Date: 2003-02-19
EXPLORATION TECH RES INST OF CHINESE ACADEMY OF GEOLOGICAL SCI
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention provides a double-nozzle composite valve type hydraulic down-the-hole hammer, which can effectively solve the jamming of moving parts when the mud used by the hydraulic down-the-hole hammer has a high solid content to improve the working stability of the hydraulic down-the-hole hammer in the mud

Method used

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Embodiment Construction

[0009] The double-nozzle composite valve type hydraulic down-the-hole hammer includes a casing 1, an upper valve 2, a hammer 3, a hammer bearing nozzle 4 and a lower joint 5. The upper center of the casing 1 is provided with an upper nozzle 6, which is facing the upper valve 2. The upper chamber 7 and the central hole 9 of the upper valve can use the jet formed by the high-speed movement of the liquid flow to generate a low-pressure effect at the upper chamber 7 of the upper valve; the outer diameter of the upper valve 2 forms a sliding fit with the inner diameter of this part of the shell 1, and the matching surface There is a longitudinal groove 8, the upper valve 2 can move freely up and down and has a limited position when moving downward, the movement stroke is A, and the value of A is 1-500 mm. The upper section of the hammer 3 forms a sliding fit with the shell 1, and the lower section forms a sliding fit with the inner hole of the upper section of the lower joint 5 to e...

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Abstract

A hydraulic in-the-hole hammer with dual nozzles and combined valve for underground drilling and ramming tube is composed of shell with upper nozzle in the center of its upper part, upper valve, impact hammer and its nozzle, and lower jointer. The said upper valve can be freely slide in the shell in a limited range. The said impact hammer can flexibly move up and down and has by-pass water channel on its inner surface.

Description

Technical field [0001] The invention relates to a hydraulic down-the-hole hammer used for underground drilling and impact ramming pipe construction, which belongs to drilling machinery [0002] technology field. Background technique [0003] At present, the hydraulic down-the-hole hammer that can be used for drilling construction mostly adopts a single structure form among valve type, jet type or jet suction structure, which has higher requirements or output of mud in actual production to varying degrees. The single impact energy is not high enough, so it is limited in practical application. Contents of the invention [0004] In order to overcome the deficiencies of the prior art, the present invention provides a double-nozzle compound valve type hydraulic down-the-hole hammer, which can effectively solve the jamming of moving parts when the mud used by the hydraulic down-the-hole hammer has a high solid content To improve the working stability of the hydraulic down-the-...

Claims

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Application Information

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IPC IPC(8): E21B4/14
Inventor 谢文卫苏长寿孟义泉
Owner EXPLORATION TECH RES INST OF CHINESE ACADEMY OF GEOLOGICAL SCI
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