Blower fan feature multipoint pressure synchronous measurement test system

Abstract

The invention discloses a blower fan feature multipoint pressure synchronous measurement test system. The system comprises miniaturized impact pipes, support bars and a test pipe, wherein the miniaturized impact pipes are capillary stainless steel pipes appearing to be right-angle-shaped, the pipe wall of one side of each support is provided with grooves, the pipe wall of the other side is provided with holes, the quantities and positions of diameters in a test cross section on the test pipe and the quantities and positions of test points on each diameter are determined according to a log-linear method or a log-Tchebycheff method, one right-angle side of each miniaturized impact pipe successively extend from each hole, the other right-angle sides are successively fixed in the grooves in a superposed mode, the two ends of each support bar are fixed on the pipe wall of the test pipe, four static pressure holes are equally distributed on the pipe wall where the test cross section is disposed, and the end portion of the extending end of each miniaturized impact pipe and the four static pressure holes are disposed on the same test cross section. The system has the following advantages: the test efficiency is improved, the test accuracy is improved, the system has a data collection processing analysis function, and test data is displayed in real time.

Description

technical field [0001] The invention relates to a fan characteristic multi-point pressure synchronous measurement and testing system. Background technique [0002] The EMU is the core equipment of the high-speed railway, and the traction motor is the key component of the EMU. Whether the traction motor located on the bogie of the EMU can work normally determines whether the vehicle can run normally, and is directly related to the reliability and safety of the EMU running on the line. One of the important tasks to ensure the normal operation of the traction motor is to ensure the normal heat dissipation of the traction motor and keep it within the normal operating temperature range. At present, for traction motors of EMUs, considering the efficiency and economy of heat dissipation, the heat dissipation method is mainly forced ventilation heat dissipation. The traction motor cooling system of the EMU is mainly composed of a cooling fan and an air duct. The air volume generat...

AI Technical Summary

Problems solved by technology

According to the national standard flow pressure measurement standard, the flow rate on the round pipe and the square pipe needs to measure the speed of 24 or 30 measuring points (the position of the measuring point established by the national standard) respectively on a section. The common test method is to use Pitot static pressure Although according to the national standard, the speed and pressure value of each point is tested point by point, and the arithmetic mean value of all measuring points is multiplied by the cross-sectional area to obtain the flow rate, and the arithmetic mean value of the pressure of all measuring points is taken as the pressure value. This method is inefficient and difficult to operate. It is cumbersome, the data measurement is not simultaneous, the accuracy is not high, the data needs to be manually read and recorded, and the workload is heavy

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