SU1654718A1 - Hydrostatic impact sampler - Google Patents

Abstract

The invention relates to a mining depot, in particular, to devices for sampling bottom sediments when searching for underwater mineral deposits. The purpose of the invention is to improve the quality of testing and expand the functionality of the sampler contains a pipe with a working piston, folding strips of the cargo cable and a trigger mechanism. It is equipped with an additional pipe, which surrounds the pipe with a working piston, and the internal cavity between the pipes is equipped with an annular piston installed with the possibility of engagement with the rod of the working piston, and communicates with the external environment through openings. The cargo cable is equipped with a diverter, made in the form of a two-arm lever, one shoulder of which is kinematically connected with folding bars, and the other is equipped with a cargo scout. 1 il.

Description

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WITH

The invention relates to mining and can be used for sampling of sediments in the search for underwater mineral deposits of the deepwater shelf, engineering, geological and geochemical study of bottom sediments and oceanographic studies of the shelf.

The purpose of the invention is to improve the quality of testing and the expansion of functionality.

The drawing shows the sampler, a general view.

The sampler contains two coaxially mounted pipes 1 and 2, with pipe 1 being the charging cylinder and pipe 2 being the working cylinder. Inside the pipe 2, a working piston 3 with a rod 4 is installed. The pipes 1 and 2 are rigidly fixed to the lid-load 5. Three retaining fasteners 6 and three starting rods 7 are mounted into the lid-cargo 5 and the working piston 3 is provided on the bottom with an additional rod 8. at the end of which a core receiver 9 is attached with a flap valve 10 and a casing sleeve 11. A working spring 12 is worn on a rod 4, a guide rod 13 is mounted to its upper end face, into which are fixed locking pins 14 installed with the possibility of interaction with the sliders 15. The latter accommodated Yeni in the upper part of the annular piston 16. In the lower part of the pipe 1, holes 17 are made to communicate the annular cavity 18c with the environment, and in its upper part, on the outer side, hinges 19 secure the hinged stabilizers 20, which are connected to smaller the shoulder of the double-arm lever 22 of the ejector 23. The larger lever arm 22 is equipped with a reconnaissance cargo 24. The pipe 1 is sealed from above with a lid 25 equipped with eyelets 26 serving to fasten the supporting ropes 27. Breakdown VI

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the selector is connected to the vessel by a cargo cable 28.

The sampler works as follows.

Before lowering the sampler to the bottom, it is adjusted so that when the annular piston 16 disengages from the guide rod 13, the additional rod 8 engages with retaining locks 6, then an overpressure is created in the internal cavities 1 and 2 create the pressure necessary to return it to its original position after removing it from the water, and in pipe 2, the pressure that must correspond to the estimated density of the soil at the sampling point. In the initial position, the piston 16 is engaged with the guide piston 13. When the sampler is immersed, a pushing force begins to act on the piston 16, which exceeds the pressure above the pistons 3 and 16, and this effect increases with depth. When this happens, the sampler is brought into the working position. When the piston 16 reaches the top position, the inclined planes of the cover 25 push the sliders 15, which, pressing the locking pins 14, dislocking the piston 16 with the guide rod 13. In this case, the rod 8 enters engagement with retaining locks 6. The cavity of the pipe 2, which is above the working piston 3, is a pneumatic accumulator, equipped for additional force by the working spring 12. Since the pressure above the working piston 3 is many times higher than the pressure below it, a potential energy is created.

When the seabed ejector 23 is touched, the lever 22 is rotated. At the same time, the sampler is dropped and the stabilizer bars 20 are released. potential energy

position enters the forward movement of the working piston 3. After sampling, the sampler is lifted onto the vessel with the help of a cargo cable 28. In this case,

To avoid overloading due to the pile effect, the casing sleeve 11, which engages with the core receiver 9 by means of compaction, remains in the soil, thereby ensuring unhindered removal of the sampler from the soil (when working with soils of low hardness, stationary sleeve). When removing the sampler from the water pressure above the piston 16

gradually becomes redundant, with the piston 16 returning to its original position, entering into engagement with the guide rod 13.

The use of this sampler

allows to provide a wider range of studied soils by their hardness. At the same time, the quality of testing is improved, safety conditions and convenience of operation are ensured due to

automatic charging of the actuator by using hydrostatic pressure.

Claims (1)

Invention Formula Hydrostatic shock sampler containing a pipe with a working piston with a rod installed in it, folding strap stabilizers, a trigger mechanism and a cargo cable, characterized in that, in order to improve the quality of testing and enhance the functionality, it is equipped with an additional pipe covering the pipe with a working piston, while the additional pipe is made with openings in the lower part, the internal cavity between the pipes is provided with an annular piston mounted for movement and engagement with the working piston rod, and the cargo cable is provided with with a dumper, made in the form of a two-armed lever, one shoulder of which is kinematically connected with folding slider-stabilizers, and the other one is equipped with a reconnaissance cargo. Yu