2results about How to "Realize setting" patented technology

The application discloses a mechanical force-amplification compression type electrically-controlled packer and a use method thereof, and relates to the field of packers, which comprises a center pipe, a locking block ring, a rubber tube and an electrically-controlled setting and releasing mechanism which are sequentially arranged on the center pipe from top to bottom; the electrically-controlled setting and releasing mechanism comprises a linear driver and a gear and rack auxiliary force-amplification component, the output end of the linear driver is connected with the input end of the gear and rack auxiliary force-amplification component, and the output end of the gear and rack auxiliary force-amplification component is in contact with the rubber tube. The application adopts a mechanical transmission mode to realize the setting and releasing of the electrically-controlled packer, and the setting and releasing only needs to control the linear driver to push out and retract, so that the control mode is simple and reliable.

The invention relates to the field of oil and gas exploitation, in particular to a one-way fluid automatic cut-off device and method. Comprising a valve body, a sealing piece, an adjusting piece, an elastic piece and a valve body gland, and the sealing piece, the adjusting piece, the elastic piece and the valve body gland are arranged in the valve body. The valve body gland is connected with the valve body, an inner cavity is formed in the middle of the valve body gland, one end of the adjusting piece extends into the inner cavity, the other end of the adjusting piece is connected with the sealing piece, an elastic piece is arranged between the adjusting piece and the valve body gland, and the flow channel is set or communicated through the sealing piece. The one-way fluid automatic cut-off device is installed on a pipeline, when the pipeline leaks, accurate segmented cut-off can be achieved on the pipeline, and therefore the leakage amount is effectively controlled, it can be ensured that the pipeline has the liquid-free and pressure-free sealing function and the excessive and overpressure sealing function at the same time when conveying liquid under the condition that an external new power source is not needed, and the sealing effect is good. And the safety and the reliability of pipeline operation are greatly improved.