An automatic particle dispensing device suitable for the piv system of the towed pool

Abstract

The invention relates to an automatic particle distributing device suitable for the PIV system of a towed pool, which belongs to the field of experimental devices and mainly includes a composite particle mixing bin, a particle delivery telescopic pipeline, a pressure pump group and a support frame; two particle delivery telescopic pipelines Installed on the support frame, it can be moved horizontally, and connected to the outlet of the particle mixing chamber through two drainage pressure pumps; through the pumping pressure pump, the pool water is pumped into the composite particle mixing chamber from the water inlet, and after adding an appropriate amount of tracer particles, it passes through the second time. After stirring evenly, it is sent to the hollow paddle below through the particle delivery telescopic pipe. The movement of the trailer causes the hollow paddle to rotate, and the tracer particles are evenly discharged. The particle emission position and concentration 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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