Novel suspended counterweight reservoir sediment dry bulk density sampling system

Abstract

The invention provides a novel suspended counterweight reservoir sediment dry bulk density sampling system which comprises a sampler, a support frame and an additional counterweight. The support frameand the additional counterweight are fixed on the sampler. The sampler is composed of a driving cylinder, a sampling cylinder and a drill bit which are connected in sequence; and the upper and lowerparts of the driving cylinder are sealed. The driving cylinder includes a cylinder body, a control system, a storage battery, a chain hammer drilling system, wherein the control system, the storage battery, and the chain hammer drilling system are arranged in the cylinder body. A sealing device and triggering mechanism for triggering the sealing device to act are arranged in the drill bit. The control system of the driving cylinder includes a liquid level sensor and a programmable logic controller; the programmable logic controller controls the hammering drilling system to act according to thedepth change sensed by the liquid level sensor so as to drive the sampler to drill. According to the invention, no deepwater cable needs to be put down; the storage battery is loaded in the sampler to serve as a power supply, so that cables are reduced; the liquid level sensor and the programmable logic controller are added to control turning on of the motor jointly; and since the sampler is sealed by using a deflection piece type sealing mode, the disturbance to the sample entering the sampling cylinder in the sampling process is low and the sampling precision is high.

Description

technical field [0001] The invention relates to the technical field of deep-water silt sampling in reservoirs, in particular to a novel sampling system for dry bulk density of silt with suspended counterweights. Background technique [0002] In the reservoir sediment problem, the study of the basic characteristics of the sediment is particularly important. The dry bulk density of the sediment is an important physical parameter, which affects the conversion of the volume and weight of the sediment, the change of the volume of the fine-grained sediment after compaction, etc.; The dry bulk density is directly related to the calculation of the reservoir siltation volume, and the changes of nitrogen, phosphorus and other pollutants attached to the sediment are closely related to the water ecology of the reservoir, all of which need to be analyzed through the silt. [0003] Studying dry bulk density characteristics is an important way to study water ecology and reservoir siltation...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing sediment sampler is uncontrollable and the sample fidelity is not high, and propose a new type of suspended counterweight reservoir sediment dry bulk density sampling system. A battery is installed inside the sampler as a power source, and a liquid level sensor and a programmable controller are added to jointly control the opening of the motor after reducing the cables, without manual operation. The disturbance of the sample entering the sampling cylinder is small, and the sampling accuracy is high

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