Strong sealing device of hydraulic chuck for gas pumping rig

Abstract

The invention relates to a strong sealing device of a hydraulic chuck for a gas pumping rig. The strong sealing device comprises a body, a cylinder, an external interface and an inner cylinder, wherein the body, the cylinder and the external interface are coupled sequentially; and one end of the inner cylinder is arranged in the body and coupled with a rack wheel, while the other end of the inner cylinder extends out of the external interface and is coupled with the chuck. The strong sealing device is technically characterized in that TB3 Che seals, wear resisting rings and glands are arranged at both ends of the cylinder; the TB3 Che seals are hermetically packaged between the cylinder and the inner cylinder through the glands; the outer circular walls of the TB3 Che seals are compactly attached to the inner wall of the cylinder body; the inner circular walls of the TB3 Che seals are attached to the outer wall of the inner cylinder through the wear resisting rings in a sealing mode; and the TB3 Che seals are compressed at both ends of the cylinder through the glands. The oil distributing and sleeving sealing device has the advantages of high-pressure resistance, wear resistance, and seal and no leakage, and wear of contact face can be automatically compensated.

Description

technical field [0001] The invention relates to the technical field of coal mine machinery, in particular to a strong seal for an oil distribution sleeve of a hydraulic chuck of a gas extraction drilling rig. Background technique [0002] At present, my country's coal mining speed is growing rapidly. With the gradual increase of mining depth, the risk of gas outburst and explosion in coal mines is also increasing, and gas outburst and explosion accidents often occur. In the early days, large ventilation volumes were used to directly pump gas into the atmosphere, which polluted the atmosphere and did not meet the requirements for energy conservation and emission reduction. At present, domestic and foreign gas extraction drilling rigs use hydraulic chucks to clamp the drill pipe to drill coal mine holes and gas discharge holes. The hydraulic chuck has a large clamping force on the drill holes, firm clamping, and is not easy to fall off. It is suitable for coal mine holes. For...

AI Technical Summary

Problems solved by technology

The oil distribution sleeve of the sealing element in the gas extraction drilling rig can provide high-pressure oil for the high-speed rotating hydraulic chuck, so that the chuck has the ability to transmit torque and axial force to the drill pipe. It is easy to wear and tear, causing high-pressure oil leakage, affecting normal and safe use

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