Automatic particle spreading device suitable for towing basin PIV system

Abstract

The invention relates to an automatic particle spreading device suitable for a towing basin PIV system, and belongs to the field of experimental devices. The automatic particle spreading device suitable for the towing basin PIV system mainly includes a compound particle agitating tank, particle delivery telescopic pipelines, a pressure pump group and a support frame; two particle delivery telescopic pipelines are installed on the support frame and can be moved horizontally, and are connected to the water outlet of the particle agitating tank through two drainage pressure pumps; the pool wateris pumped into the compound particle agitating tank from a water inlet through a pumping pressure pump; after adding an appropriate amount of tracer particles and evenly agitating twice, the pool water is sent to hollow blades at the lower part through the particle delivery telescopic pipelines; and the movement of a trailer causes the hollow blades to rotate and uniformly discharge the tracer particles, so that the discharge position and concentration of the particles can be controlled according to specific test requirements.

Description

technical field [0001] The invention relates to an automatic particle spreading device suitable for a PIV system of a towed pool, belonging to the field of experimental devices. Background technique [0002] When conducting PIV (Particle Image Velocimetry) experiments in a towed pool, it is necessary to spread a certain concentration of tracer particles in the water to measure the test data, and at the same time, there is a very high requirement for the quality of the particle spreading, which requires a device that can provide Particle dispensing device with high particle dispensing effect. [0003] There are many technical defects and deficiencies in the existing tracer particle spreading device in the towed pool: [0004] 1. The actual operation process is cumbersome. When injecting particles into the box, the particles and water need to be manually stirred evenly before being introduced into the box. Liquid splashes are prone to occur during the operation process. This ...

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Problems solved by technology

[0004] 1. The actual operation process is cumbersome. When injecting particles into the box, the particles and water need to be manually stirred evenly before being introduced into the box. Liquid splashes are prone to occur during the operation process. There are potential safety hazards in this operation on a trailer with a high density of electrical equipment

[0005] 2. Most of the particle mixing chamber is a single-shaft agitator, which has limited ability to generate turbulent pulsation, and cannot mix the tracer particles with water uniformly. There is a phenomenon that the tracer particles are agglomerated and discharged during the particle spreading process. Reduce the utilization of tracer particles

[0006] 3. The sowing of particles is mainly to discharge the particle solution in the pool through the fixed hole of the fixed sowing pipe. The sowing effect is uneven, the particle spreading width is wide, and there is a large amount of waste of particle solution, so that the particle solution needs to be replenished more frequently. Increased work costs for testing

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