Hydraulic power experimental flow box capable of being used for flow field measurement and visualization research

Abstract

The invention discloses a hydraulic power experimental flow box capable of being used for flow field measurement and a visualization research. The hydraulic power experimental flow box comprises a visualization conical pulp distribution device, a visualization step diffuser, a visualization setting chamber, a visualization turbulence generator, a visualization lip chamber and a dilution water supply system, wherein the visualization conical pulp distribution device, the visualization step diffuser, the visualization setting chamber, the visualization turbulence generator and the visualization lip chamber are connected in sequence to form a box body structure; every adjacent two of the visualization conical pulp distribution device, the visualization step diffuser, the visualization setting chamber, the visualization turbulence generator and the visualization lip chamber are sealed through a concave-convex surface or a tongue-and-groove; meanwhile, a dilution water injection port is arranged on the visualization conical pulp distribution device, and the dilution water supply system is connected with the dilution water injection port through a dilution water pipe. The hydraulic power experimental flow box enables the flow field measurement and the visualization research of the flow box to be conducted conveniently, can effectively realize sealing between nonmetal and nonmetal, and is quite convenient to dismount.

Description

technical field [0001] The invention relates to the technical field of a hydraulic headbox for concentration adjustment of dilution water, in particular to a hydraulic experimental headbox capable of flow field measurement and visualization research. Background technique [0002] At present, the dilution water thickening hydraulic headbox is internationally recognized as a common advanced high-speed headbox. The optimization of its equipment performance and technological innovation are imperative. Researchers at home and abroad have carried out relevant research on this and have Made many important scientific research achievements. [0003] In China, the dilution white water headbox of Shandong Changhua Paper Machinery Co., Ltd. has a conical tube structure for the dilution water channel, which has the dual functions of a stepped diffuser and a mixing chamber, and the secondary turbulence generator is a cross-flow Honeycomb turbulence generator; Weifang Kaixin Machinery Co....

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Problems solved by technology

[0005] Although there are many domestic studies on the structure and control of the dilution water concentration hydraulic headbox, and many achievements have been made, especially the national "Eleventh Five-Year" science and technology support plan "Domestic high-speed paper machine "Research and Development", which raised my country's pulp flow delivery technology and headbox technology to the international advanced level, and there are many advanced dilution water thickening hydraulic headboxes researched abroad. These headboxes can play a role in engineering practice. Great effect, but none of them can meet the requirements of headbox flow field measurement, and cannot obtain a visualized flow field

At present, there is no open headbox at home and abroad that meets the measurement and visualization research of measurement systems such as PIV (Particle Image Velocimetry). Based on this, the experimental headbox of the present invention can be used on the basis of engineering practice. Measure and visualize the flow field of each component in the headbox at various vehicle speeds, so as to make a theoretical breakthrough in the flow delivery technology of the headbox, which can have a good guiding role in engineering practice

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