SU1452928A1 - Sampler of bottom soil - Google Patents

Abstract

FIELD: engineering for marine exploration. The goal is to increase work efficiency. For this purpose, a control element 15 with a stem-leader 16 is rigidly attached to the cylinder 11. The sampler has vacuum chambers 17 and an upper 13 valve with an axial bore and a backflow valve 19 located on it with a hydrostop 20. The sampler has a column pipe 1, which is hermetically mounted in the hole cover 13 with the possibility of axial movement and support into it with a broadened end. The latter is made above the roofs of the U-z / s & (L fm.

Description

13 in the upper part of the pipe 1. It has a check valve 7, placed in widening and connected by a flexible connection with the frame 10 of the cylinder 11. The element 15 is installed with the possibility of contact of its stem-leader 16 with the lower 3 stop of the pipe 1 and the message 17 with the sub piston cavity of the cylinder 11. The latter slightly moves upwards and stops.

because pressure in the supra piston and sub piston cavities is leveled and the pipe is introduced into the ground. After the chambers 17 have been filled, the deployment is complete. The valve 19 is stopped and the sample is removed from the pipe 1. The presence of the cover 13 and the valve 19 allows the cylinder 11 to be fixed in the lower position using the suction effect. 3 il.

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This invention relates to a technique for marine exploration, namely sampling.

The aim of the invention is to increase the efficiency of the sampler.

° In FIG. 1 shows the sampler, the initial position; in fig. 2 - the same, when introducing a core pipe into the ground; in fig. 3 - the same position with the interaction of the rod-leader of the control element with the lower stop of the core pipe.

The sampler consists of a column pipe 1 with a hollow rod 2 rigidly attached to it with a lower stop 3 and an upstream piston 4 with seals 5 and radial holes 6, which communicate the cavity of the column pipe with a piston chamber. On the upper part of the stem 2, which is a continuation of the core pipe 1, a thickening is made, in which a check valve 7 is installed, which communicates the external space with the cavity of the core pipe. The stem 8 of this valve is connected by a flexible bond - a rope 9 with a frame, 10 attached to a cylinder

11, which is mounted on the rod 2 with the possibility of limited axial movement between the lower stop 3, interacting with the bottom cover

12, and a thickening in the upper part of the stem 2, which interacts with the upper lid 13 of the cylinder 11. The tightness of the movable joint of the stem 2 with both lids 12 and 13 is provided by seals 14. To the lower cylinder lid 12 of the cylinder is attached the control element 15 with the stem leading 16, according to the vacuum chambers 17 with the sub-piston space, when the stem-leader 16 interacts with the lower stop 3 (FIG. 3). Vacuum chambers 17 are equipped with fittings 18 with plugs. The top flap 13 is provided with a check valve 19 with a hydraulic stop 20. This valve communicates the outer space with the piston chamber of the cylinder 11. The frame 10 is attached to the cargo cable 21 connected to the winch mounted on the deck of the vessel.

The bottom soil sampler is processed in the following way.

The sampler is lowered to the bottom in the initial position (figure 1). When immersed, the water from the core pipe through the holes 6 and the check valve 19 fills the cavity of the cylinder 11. When immersed at the design depth to which the hydrostop 20 is pre-set, the latter releases the check valve 9 and it closes.

After being touched by the sampler and embedded as a tube, the sample displaces water through valve 7. When it enters the soil, the column tube 1 brakes and the cylinder 11 moves under the action of kinetic energy down the shaft 2 (Fig. 2G, Simultaneously the rope is weakened .9, which causes the valve 7 to close, water from the core pipe 1 flows through the holes b into the piston cavity, and water from the piston cavity through the return valve 19 flows into the outer space until

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Claims (1)

SUMMARY OF THE INVENTION A bottom soil sampler comprising a core pipe with a lower stop rigidly attached thereto and an upstream piston with a check valve communicating the external space with a core space ^{5 of the} pipe, a cylinder with a lower cover in the cavity of which the upper portion of the core 10 is placed with limited axial movement pipes with the specified piston, as well as radial holes made in its wall under the piston, a frame attached to the cylinder and having a node for connection with a load cable _{1 5} winch, characterized in that, in order to increase work efficiency, it is equipped with a control element rigidly attached to the cylinder with a leader rod, va2Q chamber chambers and an upper cover with an axial hole and a check valve and a hydraulic stop located on it, and the core tube is hermetically sealed installed in the hole of the top 25 of the cylinder cover with the possibility of axial movement and abutment in it with a widened end made above the cover in the upper part of the core pipe, the core check valve 30 pipes are placed in this broadening and connected by a flexible connection with the cylinder frame, and the control element is installed with the possibility of contact of its stock calder with the bottom stop of the core pipe and communication with the vacuum 35 chambers with a piston cylinder cavity. 4 & eJ