Transfer and online detection system for deep-sea sediment samples and application method thereof

Patent metadata

Field	Value
Publication number	US-12025604-B2
Application number	US-202117551695-A
Country	US
Kind code	B2
Filing date	Dec 15, 2021
Priority date	Dec 15, 2020
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A transfer and online detection system for deep-sea sediment samples and an application method thereof are provided. A sample gripping and feeding device, a sample segment cutting device, a sample online detection device, a high-pressure ball valve and a pressure-retaining drill disengaging device of the system are coaxially connected with one another. A seawater booster pump is connected with a water inlet ball valve, and a valve control panel is connected with the sample gripping and feeding device, the sample segment cutting device, the high-pressure ball valve and the pressure-retaining drill disengaging device. The pressure-retaining drill disengaging device is configured for disengaging an inner barrel and an inner barrel joint, and the sample gripping and feeding device and the sample segment cutting device are configured for gripping and cutting core samples, and conveying the cut core samples into a subsample pressure-retaining storage cylinder for storage.

First claim

What is claimed is:

1. A transfer and online detection system for deep-sea sediment samples, comprising a sample gripping and feeding device, a sample segment cutting device, a ball valve, a pressure-retaining drill disengaging device, a subsample pressure-retaining storage cylinder, a cool water tank, an online sample detection device, a monitoring and operating system, and a seawater cooling and pressurizing system, wherein the sample gripping and feeding device, the sample segment cutting device, the online sample detection device, the ball valve and the pressure-retaining drill disengaging device are coaxially connected together in sequence; a seawater booster pump in the seawater cooling and pressurizing system is connected with a water inlet main ball valve in a valve control panel through a pipeline, and the valve control panel is connected with the sample gripping and feeding device, the sample segment cutting device, the ball valve and the pressure-retaining drill disengaging device through branches and valves on the branches; and the cool water tank is configured for cooling a sampling drill, the pressure-retaining drill disengaging device is configured for disengaging an inner barrel from an inner barrel joint of the sampling drill, and the sample gripping and feeding device and the sample segment cutting device are configured for gripping and cutting core samples, and conveying the core samples cut into the subsample pressure-retaining storage cylinder for storage;
wherein the sample gripping and feeding device comprises a first motor, a first hoop, a front pressure-retaining cylinder segment, a second hoop, a rear pressure-retaining cylinder segment, a third hoop, a rear end cover, a lead screw, a guide rail, a gripper, an auxiliary supporting slide block, a gripping rod, a gears joint, a driving slide block and a front end cover, wherein the front pressure-retaining cylinder segment and the front end cover are coaxially connected via the first hoop, the front pressure-retaining cylinder segment and the rear pressure-retaining cylinder segment are coaxially connected via the second hoop, and the rear pressure-retaining cylinder segment and the rear end cover are coaxially connected via the third hoop; the guide rail is arranged in the front pressure-retaining cylinder segment and the rear pressure-retaining cylinder segment via screws, and configured for guiding the auxiliary supporting slide block and the driving slide block to axially move; the auxiliary supporting slide block and the driving slide block each are arranged on the guide rail and coaxial with the front pressure-retaining cylinder segment, and form a gap with an inner wall of the front pressure-retaining cylinder segment; two ends of the lead screw are arranged to the front end cover and the rear end cover respectively, the lead screw penetrates through through holes in the driving slide block and the auxiliary supporting slide block, the gears joint is arranged on the lead screw, one end of the gripping rod is fixedly connected with the gears joint, another end of the gripping rod is provided with the gripper, and the gears joint is capable of converting rotational movement of the lead screw into axial translational movement of the gripping rod; and the first motor is connected with one end of the lead screw via a first coupler, and is configured to drive the lead screw to rotate; and
wherein the sample segment cutting device comprises a cabin, a right end cover, a second motor, a clamping handwheel, a left end cover, a third motor, a first worm-and-gear pair, a second worm-and-gear pair, a third worm-and-gear pair, three cutters, a first spiral slotted disc, three first clamps and a second spiral slotted disc; wherein the right end cover and the left end cover are coaxially connected to the cabin via bolts; a worm gear of the first worm-and-gear pair, a worm gear of the third worm-and-gear pair, the first spiral slotted disc and the second spiral slotted disc are coaxially arranged in the cabin, the worm gear of the first worm-and-gear pair are coaxially connected to the second spiral slotted disc via bolts, and the worm gear of the third worm-and-gear pair are coaxially connected to the first spiral slotted disc via bolts; the three cutters are arranged on the first spiral slotted disc at an interval of 120 degrees, and are controlled to advance or retreat by forward and reverse rotations of the first spiral slotted disc; the first clamps are arranged on the second spiral slotted disc at an interval of 120 degrees, and are controlled to advance or retreat by forward and reverse rotations of the second spiral slotted disc; the second motor is connected with a worm of the third worm-and-gear pair via a second coupler, and is configured to control the third worm-and-gear pair to move; the clamping handwheel is connected with a worm of the first worm-and-gear pair via a flat key, and the first worm-and-gear pair is moved by rotating the clamping handwheel; and a worm gear of the second worm-and-gear pair is located between the first clamps and the cutters, and coaxially connected to the first spiral slotted disc; the third motor is connected with a worm of the second worm-and-gear pair via a third coupler, and is configured to control the second worm-and-gear pair to move.

2. The transfer and online detection system according to claim 1 , wherein the pressure-retaining drill disengaging device comprises an end cover, a clamping cabin, a disengaging cabin, a pressure-retaining cylinder, a worm, two clamp handles, a disengaging slide sleeve, a worm gear and second clamps; wherein the clamping cabin is connected with the end cover and the disengaging cabin via bolts, and the pressure-retaining cylinder is connected with the disengaging cabin via a flange; the second clamps are arranged in the clamp handles via bearings, the two clamp handles are symmetrically arranged at two sides of the clamping cabin, and the second clamps are controlled to advance or retreat by rotating the clamp handles; and the worm gear is arranged in the disengaging cabin, the disengaging slide sleeve is connected with the worm gear via a feather key, and the worm gear is driven to rotate by rotating the worm to control the disengaging slide sleeve to move.

3. The transfer and online detection system according to claim 2 , wherein the monitoring and operating system comprises a control console, a display, the valve control panel, an exhaust display device, a computer host and a power distribution cabinet;
wherein the display is configured for displaying a progress of core sample transferring and conditions of each of executing elements including rotational speeds and torques of the first motor, the second motor and the third motor, and a pressure and medium temperature curve within the transfer and online detection system; the valve control panel is configured for controlling inflow and exhaust of the branches; and the power distribution cabinet is configured for supplying power to the executing elements and collecting data fed back by the executing elements.

4. The transfer and online detection system according to claim 3 , wherein the seawater cooling and pressurizing system comprises the seawater booster pump, a first compressor, a first condenser, a water storage tank, a first circulating pump, a second compressor, a second evaporator, a second condenser, a second circulating pump, a first evaporator and an installation chassis; wherein the first compressor, the first condenser, the second circulating pump and the first evaporator jointly constitute a primary-efficiency cooling unit; the first circulating pump, the second compressor, the second evaporator and the second condenser jointly constitute a cooling unit; and the seawater booster pump, the water storage tank, the primary-efficiency cooling unit and the co

Assignees

• Univ Zhejiang
• Guangzhou Marine Geological Survey
• Univ Dalian Tech
• Univ Hangzhou Dianzi

Inventors

• Chen Jiawang
• Xiao Bo
• Gao Qiaoling
• Zhao Jiafei
• Sheng Qinghua

Classifications

• G01N1/286

  involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising (microtomes G01N1/06; pulverising in general B02C; mixing in general B01F) · CPC title

• G01N1/42

  Low-temperature sample treatment, e.g. cryofixation · CPC title

• G01N2001/2873

  Cutting or cleaving · CPC title

• E21B25/18 Primary

  the core receiver being specially adapted for operation under water · CPC title

• G01N2001/1062

  Sampling under constant temperature, pressure, or the like · CPC title