Evaporation capacity testing device
A testing device and evaporation technology, which are applied in mass flow measurement devices, internal combustion engine testing, and fluid flow detection by measuring differential pressure, can solve the problems of low measurement results, and achieve the effects of simple operation, high accuracy and simple structure
Active Publication Date: 2020-05-05
CHINA NORTH ENGINE INST TIANJIN
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And the measured medium of the coolant evaporation parameter is mainly steam and cooling liquid droplets, which belongs to a special form of gas-liquid two-phase flow, in which the gas phase is a continuous phase, and the liquid phase is a discrete phase. Single-phase flow detection Will make the measurement result low or high
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[0028] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0029] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...
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The invention provides an evaporation capacity testing device. The core idea is that pressure stabilizing boxes are additionally arranged in front of and behind a flowmeter, the requirement of the flowmeter unit on the straight pipe section is reduced and miniaturization is facilitated. A high-temperature circulating system is adopted to keep the temperature of a measured medium in a primary pressure stabilizing box to reduce deposition, a low-temperature circulating system is adopted to separate out a sol-like or liquid-state medium in a secondary pressure stabilizing box, a calculation modelis utilized to obtain the gas and liquid phase contents in the measured medium, and finally the gas and liquid phase contents are corrected to an online flow testing unit. The invention provides a simple, reliable, economical and practical online evaporation capacity testing method, the trademark and the concentration of the cooling liquid in the cooling system are not limited, and the requirement of quickly evaluating the performance of the cooling system of the existing vehicle diesel engine under different working conditions of a laboratory is met; meanwhile, the device can be used for testing the content of waste aerosol-state engine oil in a crankcase ventilation system and is simple in structure and high in accuracy.
Description
technical field [0001] The invention belongs to the technical field of engine testing, and in particular relates to an evaporation testing device. Background technique [0002] Limited by the space of the vehicle power compartment, the volume of the auxiliary operating system of the diesel engine cannot be matched without limit. In order to ensure the reliability of the power operation of the whole machine, the common speed conditions are generally used as the design matching point of the auxiliary system, so that the vehicle power can only be used for a limited time. It operates at the rated speed power point condition. However, when the vehicle is running in a high-altitude area, due to the thin air and low air pressure in the area, the boiling point of the cooling water in the diesel engine cooling system is low, the cooling capacity of the system is reduced, and the balance point of the diesel engine system is reduced, which is prone to overheating and evaporation of the...
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IPC IPC(8): G01M15/04G01F1/88G01F1/42
CPCG01F1/42G01F1/88G01M15/04
Inventor 刘峰春冀树德杨天军王宇冯跃娟郝冀雁
Owner CHINA NORTH ENGINE INST TIANJIN