Construction method for crosswind multiphase flow system for high speed train test

Abstract

The invention discloses a construction method for a crosswind multiphase flow system for a high speed train test. The method includes the following steps that (1) flanges and wind pipes are manufactured respectively; (2) the wind pipes are hoisted in position, and wind pipe supports are installed; (3) the wind pipes are paired and welded, the flanges are connected with the wind pipes, and meanwhile guide vanes are installed in bends of the wind pipes; (4) an axial flow fan is installed underground, and the wind pipes are connected with the axial flow fan; (5) a noise elimination plenum chamber is installed, the wind pipes are connected with the noise elimination plenum chamber, and meanwhile a sealing element is inserted into the joint of each wind pipe and the noise elimination plenum chamber in a plug pin mode; (6) a rectification section and a grill opening are installed, and the grill opening is connected with the noise elimination plenum chamber; (7) a wind speed and wind pressure tester is installed and connected with a central control unit; (8) simultaneous debugging is conducted on the crosswind multiphase flow system, and the comprehensive performance of the system is tested. The method well overcomes a plurality of defects in a construction technology of an existing crosswind multiphase flow system.

Description

[0001] technical field [0002] The invention relates to a construction method, in particular to a construction method of a crosswind multi-phase flow system for a high-speed train test. Background technique [0003] The crosswind multi-phase flow system used in the high-speed train test is a non-standard production, which is difficult to process, requires high welding quality, high wind speed, high noise, and the air volume is not easy to balance and distribute. [0004] Based on this, the applicant designed a crosswind multiphase flow system for high-speed train testing in 2012 (Chinese patent number: ZL 201220412622.1), which has the characteristics of low cost, convenient processing and low noise , can well detect various parameters of the train in the simulated high-speed running state, and it can be used repeatedly. During the system test, the noise is small, the air volume is evenly distributed, and the fan can adjust the air volume and speed by frequency conversi...

AI Technical Summary

Problems solved by technology

[0006] (1) The air is prone to vortex at the sharp turn of the air duct, resulting in poor airflow, which not only loses energy, but also makes it difficult to completely eliminate noise;

[0007] (2) There is a flaw in the connection between the static pressure box and the air duct that is not tightly sealed, which also leads to noise;

[0008] (3) The air volume generated by the system is regulated by the frequency converter, so it is difficult for the air volume and pressure to meet the balance requirements of the experimental air volume in real time and accurately, resulting in low accuracy of the parameters for the system to simulate the high-speed operation of the train, which reduces the value of technical reference

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