Detachable high-precision continuous sediment-taking bed load sediment discharge measuring device

Abstract

The invention discloses a detachable high-precision continuous sediment-taking bed load sediment discharge measuring device. The device mainly comprises a sediment collection inner cylinder and a sediment collection outer cylinder, wherein the sediment collection outer cylinder is positioned below the sediment collection inner cylinder; a circular turning plate is arranged inside the sediment collection inner cylinder; the sediment collection inner cylinder is divided into an upper sediment collection layer and a lower sediment taking layer; the circular turning plate is connected with a rotating shaft outside the sediment collection inner cylinder; the circular turning plate is turned by the rotating shaft; a water inlet and air outlet guide pipe is arranged on the cylindrical wall of the sediment collection inner cylinder, positioned below the circular turning plate and connected with the tail of a water tank through a connecting rubber hose; the lower part of the sediment taking layer of the sediment collection inner cylinder stretches into the sediment collection outer cylinder; the sediment collection outer cylinder is gradually closed so as to form an inverted cone frustum; a circular baffle is further arranged at the bottom of the inverted cone frustum. According to the device, the bed load sediment discharge of uniform/non-uniform sediments can be accurately measured.

Description

technical field [0001] The invention relates to a test device for the discipline of river sediment dynamics, in particular to a measuring device for studying the sediment transport rate of moving matter during the test of a sediment tank. Background technique [0002] River dynamics is a subject that studies the transport process of sediment in water flow and the movement law of sand-carrying water flow. Due to the unstable sampling of the drift mass in the field, there are large errors, and the engineering has to rely on the formula of the drift mass sediment transport rate derived from the actual measurement and deduction in the laboratory. important means. At present, the sand funnel, the measuring device used in the laboratory to measure the sand transport rate of the transported mass, has the following disadvantages: [0003] Some sand funnels are only equipped with a valve. When collecting the moving sediment, in order to ensure that the sediment in the tank does not...

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Problems solved by technology

[0005] In order to solve the problems of disturbed water flow field and endless sand taken by the funnel during the sand taking experiment, the present invention provides a deta

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