The invention discloses a static friction-based crude oil storage tank bottom deposit in-situ sampling device and method. The invention aims to solve the problem of difficulty in the in-situ samplingof the bottom sediment of a large crude oil storage tank through a simple mechanical device. The static friction-based crude oil storage tank bottom deposit in-situ sampling device comprises an oil inlet, a sampling cylinder internal screw thread, a sampling cylinder, an oil outlet, a sampling cylinder connecting external screw thread, a sampling cylinder joint, a connection rod lower joint, a connection rod lower joint internal screw thread, a connection rod inner hole, a connection rod, a connection rod upper joint and a connection rod upper joint external screw thread. The invention also discloses a method for realizing sampling by using the static friction-based large crude oil storage tank bottom deposit in-situ sampling device. The device of the invention is simple in structure and convenient to operate, and lays a foundation for scientific research on the bottom sediments of the large crude oil storage tank.

Static friction-based crude oil storage tank bottom deposit in-situ sampling device and method

The invention relates to a soil sampling device. The soil sampling device comprises a supporting rack, a pressing device, and a soil drilling and sampling device, wherein the pressing device is arranged on the supporting rack; the soil drilling and sampling device is arranged below the pressing device; and the pressing device drives the soil drilling and sampling device to sequentially carry out soil drilling and sampling. The soil sampling device provided by the invention has the advantages that the soil drilling and sampling device is driven by the pressing device to sequentially carry out the soil drilling and the sampling, so that the phenomenon that during direct sampling by a sampling device, as the sampling device cannot continue drilling due to a larger resistance or is deformed under an overlarge pressure after a certain depth is achieved, the sampling is very inconvenient and accuracies of a sampling amount and a sampling depth are affected is avoided.

Soil sampling device

An embodiment of the utility model provides a soil sampling device, include: the sample bucket, the top of sample bucket is equipped with a fixed plate, and the surface of sample bucket is equipped with a plurality of first rotating parts, the inner tube, endotheca in sample bucket, the top and the fixed plate of inner tube are connected, and the axis of inner tube is parallel with the axis of sample bucket, and the length of sample bucket is less than the length of inner tube, rotatory bucket, the surface of sample bucket is located to the cover, and the sample bucket rotatably is connected with rotatory bucket, and wherein, distance between the top of rotatory barrel and sample bucket is greater than the distance between the top of first rotating part and sample bucket, a plurality of running -boards set up in the surface of rotatory bucket, the pole of ventilating, fixed plate and inner tube are passed in proper order to the bottom of the pole of ventilating, and ventilate the bottom of pole and expose in the inner tube, and expose in the fixed plate on the top of the pole of ventilating, and the pole of ventilating is connected with the inner tube, can make the soil sampling device efficient take a sample to deep soil, success rate that the improvement was taken a sample to deep soil.

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Soil sampling device