Pressure-holding core transfer device and method

Abstract

The invention discloses a pressure maintaining rock core transfer device and method. The pressure maintaining rock core transfer device includes a transfer chamber, the transfer chamber is a hollow cavity with openings at both ends, the front end and the rear end of the transfer chamber are separately connected with a transfer tube through sealing washers, a rock core chamber and support frames are arranged in the transfer chamber, one ends of the support frames are fixedly connected with the outer wall of the rock core chamber, the other ends of the support frames are connected with the innerwall of the transfer chamber through pulleys, so that the rock core chamber can slide in the transfer chamber, the transfer tube is provided with a flap valve and a driving mechanism connected to theflap valve, the transfer tube at the rear end of the transfer chamber is connected with a sealing valve through a quick connector, the other end of the sealing valve is connected with an adapter, andthe sealing valve moves under the action of the driving mechanism to realize the sealing of the transfer chamber; the transfer chamber is also connected with a pressure balancing control unit, the pressure balancing control unit comprises a safety valve, a shut-off valve, an accumulator and a pressure gauge, the pressure gauge is connected with the transfer chamber, the accumulator is connected with the transfer chamber through the shut-off valve, and the other end of the shut-off valve is connected with the safety valve; and the pressure maintaining rock core transfer device is suitable forall types of pressure-maintaining core-taking operations.

Description

technical field [0001] The invention belongs to the field of in-situ mechanics research of rock mass, and relates to a device and method for transferring a pressure-holding rock core. Background technique [0002] Sustained, safe and green energy supply is the basic guarantee for my country's rapid economic development. With the gradual depletion of shallow resources, resource development continues to go deep into the earth, and the exploitation of deep resources has become a new normal. Therefore, basic theoretical research on improving the ability to obtain deep resources has become an important symbol of the world's mining power. [0003] In the prior art, the method for researching the characteristics of deep coal rocks is to use coring technology to take deep samples, and then carry out laboratory test analysis and research. However, since the sampling needs to go through two main processes of in-hole collection and surface transfer, it takes a long time, and the physi...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a pressure-holding core transfer device and method in order to overcome the problem that the existing core transfer equipment cannot effectively ensure the original position of the core during the deep drilling and coring process. It can keep the core in a pressurized state during the transportation process after sampling, and keep the core in situ to the greatest extent

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