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CN-122014114-A - Submarine drilling device and method for marine geological survey

CN122014114ACN 122014114 ACN122014114 ACN 122014114ACN-122014114-A

Abstract

The invention provides a submarine drilling device for marine geological investigation, which relates to the technical field of geological investigation and comprises a drilling cutter head and a shield barrel arranged at the upper end of the drilling cutter head, wherein a gas-liquid separation mechanism is arranged in the shield barrel, the gas-liquid separation mechanism comprises a circular plate I, a circular plate II and a gas outlet mechanism, the circular plate I is fixedly connected to the inner wall of the shield barrel, the circular plate II is movably arranged in the shield barrel and is arranged above the circular plate I in a sealing manner, the gas outlet mechanism is connected to the inner wall of the shield barrel and movably penetrates through the circular plate II, the gas outlet pipe comprises a gas outlet pipe, a floating plate mechanism and a plugging mechanism, the gas outlet pipe is fixedly connected to the inner wall of the shield barrel and movably penetrates through the circular plate II, the floating plate mechanism extends to the inner part of the lower end of the gas outlet pipe in a floating manner, the plugging mechanism is connected to the circular plate II, and the movable seal extends to the inner part of the upper end of the gas outlet pipe. The air outlet mechanism realizes two times of air collection through one-time up-down reciprocating motion of the circular plate II, and realizes separation of air and seawater.

Inventors

  • Meng Yuanku
  • GAO QINGZE
  • HAN ZUOZHEN

Assignees

  • 山东科技大学

Dates

Publication Date
20260512
Application Date
20260320
Priority Date
20251117

Claims (7)

  1. 1. The submarine drilling device for marine geological survey comprises a drilling cutter head (1) and a shield barrel (2) arranged at the upper end of the drilling cutter head (1), and is characterized in that a liquid inlet channel is formed in the bottom end of the shield barrel (2), a gas-liquid separation mechanism communicated with the liquid inlet channel is arranged in the shield barrel (2), the gas-liquid separation mechanism comprises a filtering piece, a first circular plate (3), a second circular plate (4), a gas outlet mechanism (5) and a driving device, the filtering piece is arranged at the bottom end of the shield barrel (2), the first circular plate (3) is arranged above the filtering piece and fixedly connected to the inner wall of the shield barrel (2), the second circular plate (4) is arranged above the first circular plate (3) and is arranged in the shield barrel (2) in a sealing and movable mode, the driving device drives the second circular plate (4) to reciprocate up and down, the gas outlet mechanism (5) is fixedly connected to the inner wall of the shield barrel (2), and the gas outlet mechanism (5) realizes gas collection twice through one-time up-down reciprocation of the second circular plate (4).
  2. 2. The marine geology survey subsea drilling device of claim 1, characterized in that, The air outlet mechanism (5) comprises an air outlet pipe (6), a floating plate mechanism (7) and a blocking mechanism (8), wherein the air outlet pipe (6) is fixedly connected to the inner wall of the shield cylinder (2) through a support and penetrates through the circular plate II (4) in a sealing and movable mode, the floating plate mechanism (7) is arranged in the air outlet pipe (6) in a floating mode and extends to the bottom end of the air outlet pipe (6), the blocking mechanism (8) is fixedly connected to the upper end face of the circular plate II (4) and extends to the inside of the upper end of the air outlet pipe (6) in a movable mode, an air inlet groove (12), an air outlet hole II (18) and an air outlet hole I (17) are sequentially formed in the surface of the air outlet pipe (6) from bottom to top, the air inlet groove (12) is located below the circular plate II (4), and the air outlet hole I (17) and the air outlet hole II (18) are located above the circular plate II (4) and air outlet is different.
  3. 3. The submarine drilling device for marine geological survey according to claim 2, wherein the floating plate mechanism (7) comprises a floating plate (9), a vertical rod (10) and a light blocking plate (11), the light blocking plate (11) is movably connected in the air outlet pipe (6), the two ends of the vertical rod (10) are fixedly connected with the light blocking plate (11) and the floating plate (9) respectively, and the floating plate (9) is located below the bottom end surface of the air outlet pipe (6).
  4. 4. The submarine drilling device for marine geological survey according to claim 2, wherein the plugging mechanism (8) comprises a tension spring telescopic rod (13), an air outlet plugging cylinder (14) and a push rod (15), the lower end of the tension spring telescopic rod (13) is fixedly connected with the upper end of a circular plate II (4), and the air outlet plugging cylinder (14) is fixedly connected with the upper end of the tension spring telescopic rod (13); the air outlet plugging cylinder (14) is a hollow cylinder body with the upper end plugged, the surface of the air outlet plugging cylinder (14) is provided with an air outlet hole (16), the ejector rod (15) is fixedly connected to the air outlet plugging cylinder (14), the ejector rod (15) is contacted with the light plugging plate (11) when the air outlet plugging cylinder (14) moves downwards along with the second circular plate (4) synchronously, and the air outlet hole (16) is selectively communicated with the first air outlet hole (17) and the second air outlet hole (18) respectively.
  5. 5. The submarine drilling device for marine geological survey according to claim 2, wherein an elastic telescopic rod body (19) is fixedly connected to the lower end face of the second circular plate (4), a sealing plate (20) is fixedly connected to the lower end of the elastic telescopic rod body (19), the sealing plate (20) is right opposite to the upper portion of a through hole (21) formed in the first circular plate (3), and the sealing plate (20) seals the through hole (21) when the second circular plate (4) moves downwards.
  6. 6. The submarine drilling device for marine geological survey according to claim 2, wherein the driving device comprises a reciprocating screw, a transmission mechanism and a driving motor, the driving motor is connected with the reciprocating screw through the transmission mechanism, the reciprocating screw is threaded through the center of a circular plate II (4), the reciprocating screw is rotationally connected with the shield cylinder (2), the upper wall and the lower wall of the circular plate II (4) are fixedly connected with a sealing cover (23) respectively, the sealing cover (23) is arranged outside the reciprocating screw, the upper end of the sealing cover (23) on the upper wall of the circular plate II (4) is fixedly connected with the top wall of the shield cylinder (2), and the lower end of the sealing cover (23) on the lower wall of the circular plate II (4) is fixedly connected with the upper wall of the circular plate I (3).
  7. 7. The submarine drilling device for marine geology investigation according to claim 2, wherein the filter element further comprises a filter screen, the upper end of which is provided with a support bracket fixedly connected to the inner wall of the shield cylinder (2).

Description

Submarine drilling device and method for marine geological survey Technical Field The application relates to the technical field of geological survey, in particular to a submarine drilling device and a submarine drilling method for marine geological survey. The application claims priority and the application number of the prior application is 2025116758313, namely a submarine drilling device and a submarine drilling method for marine geological exploration, which are at priority date, 2025-11-17. Background For marine geology, when geological investigation is carried out, the gas in the geology is required to be collected, and then the gas is detected, so that the analysis of the condition in the geology is convenient. In practical situations, after the submarine is drilled, seawater is mixed in the drill holes and the soil on the seabed, so that the seawater can be mixed after gas sampling, the subsequent detection is inconvenient, and aiming at the problems, the submarine drilling device for marine geological investigation is provided. Disclosure of Invention Aiming at the problems, the invention provides a submarine drilling device for marine geological survey, which realizes the separation of gas and seawater through a gas-liquid separation mechanism. The technical scheme is that the submarine drilling device for marine geological survey comprises a drilling cutter head and a shield barrel arranged at the upper end of the drilling cutter head, wherein a liquid inlet channel is formed in the bottom end of the shield barrel, a gas-liquid separation mechanism communicated with the liquid inlet channel is arranged in the shield barrel, the gas-liquid separation mechanism comprises a filter piece, a first circular plate, a second circular plate, a gas outlet mechanism and a driving device, the filter piece is arranged at the bottom end of the shield barrel, the first circular plate is positioned above the filter piece and fixedly connected to the inner wall of the shield barrel, the second circular plate is positioned above the first circular plate and is arranged in the shield barrel in a sealing and movable mode, the driving device drives the second circular plate to reciprocate up and down, the gas outlet mechanism is fixedly connected to the inner wall of the shield barrel, and the gas outlet mechanism realizes two-time gas collection through one-time up-down reciprocation of the second circular plate. Further, the air outlet mechanism comprises an air outlet pipe, a floating plate mechanism and a blocking mechanism, the air outlet pipe is fixedly connected to the inner wall of the shield cylinder through a support and passes through a circular plate II in a sealing and movable mode, the floating plate mechanism is arranged in the air outlet pipe in a floating mode and extends to the bottom end of the air outlet pipe, the blocking mechanism is fixedly connected to the upper end face of the circular plate II and extends to the inner portion of the upper end of the air outlet pipe in a movable and sealing mode, an air inlet groove, an air outlet hole II and an air outlet hole I are sequentially formed in the surface of the air outlet pipe from bottom to top, the air inlet groove is located below the circular plate II, and the air outlet hole I and the air outlet hole II are located above the circular plate II and are used for air outlet at different times. Further, the floating plate mechanism comprises a floating plate, a vertical rod and a light blocking plate, wherein the light blocking plate is movably connected in the air outlet pipe, the two ends of the vertical rod are fixedly connected with the light blocking plate and the floating plate respectively, and the floating plate is positioned below the bottom end face of the air outlet pipe. Further, the blocking mechanism comprises a tension spring telescopic rod, an air outlet blocking cylinder and a push rod, wherein the lower end of the tension spring telescopic rod is fixedly connected with the upper end of the circular plate II, and the air outlet blocking cylinder is fixedly connected with the upper end of the tension spring telescopic rod; The air outlet plugging cylinder is a hollow cylinder body with the upper end plugged, the surface of the air outlet plugging cylinder is provided with an air outlet hole, the ejector rod is fixedly connected to the air outlet plugging cylinder, the ejector rod contacts with the light plugging plate when the air outlet plugging cylinder moves downwards along with the circular plate II synchronously, and the air outlet hole is selectively communicated with the air outlet hole I and the air outlet hole II respectively. Further, an elastic telescopic rod body is fixedly connected to the lower end face of the second circular plate, a sealing plate is fixedly connected to the lower end of the elastic telescopic rod body, the sealing plate is right over the through hole formed in the first circular plate, and when t