Intelligent cooling system of magnetorheological fluid dynamometer

Abstract

The invention discloses an intelligent cooling system of a magnetorheological fluid dynamometer. The intelligent cooling system comprises a water storage tank, a circulating water pump, a cooling sleeve, a cooling water tank and a controller. Water output from the water storage tank flows through a water outlet pipe and then is pumped into the cooling sleeve arranged outside a magnetorheological fluid tank shell in a sleeving mode through the circulating water pump, after heat exchanging, water in the cooling sleeve flows into the cooling water tank through a pipeline, and cooling water cooled by the cooling water tank flows through a water return pipe and then is pumped into the water storage tank; at least one temperature sensor A is arranged in the magnetorheological fluid tank shell, and the temperature sensor A and the circulating water pump are electrically connected with the controller. The magnetorheological fluid dynamometer can be effectively cooled, intelligent cooling can be carried out according to different environments, the defects of overcooling and insufficient cooling can be overcome, the best cooling effect can be achieved, recycling of cooling water is achieved, and energy is greatly saved; in addition, the intelligent cooling system is simple in structure and convenient to mount, apply and popularize.

Description

technical field [0001] The invention relates to an intelligent cooling system of a magneto-rheological fluid dynamometer, and belongs to the technical field of energy-saving equipment. Background technique [0002] When the magneto-rheological fluid dynamometer is working, the magneto-rheological transmission device will convert the output power of the engine into heat energy in the slip state. If the heat cannot be removed in time, the heat load of the heated parts of the dynamometer will increase. , a thermal fault occurs, which directly affects the reliability and durability of the dynamometer. At the same time, heating will lead to a series of problems such as a decrease in the shear yield strength of the magnetorheological fluid, a decrease in mechanical properties or even failure, and a decrease in magnetic permeability, which will have many adverse effects on the magnetorheological transmission device. Therefore, when the magnetorheological fluid dynamometer is worki...

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Problems solved by technology

[0003] Traditional dynamometer cooling generally adopts mechanical water cooling system, which mainly has the following disadvantages: a) It cannot realize on-demand cooling and precise temperature adjustment of dynamometer; b) When testing larger power equipment, the dynamometer cooling system cannot The cooling effect can be adjusted at any time according to the heating situation to meet the heat dissipation requirements; c) When testing low-power equipment, the cooling system of the dynamometer is often overcooled, resulting in waste of energy; d) The cooling system of the traditional dynamometer cannot be based on the difference in ambient temperature or Due to the temperature difference of the coolant, the heat dissipation requirements of the dynamometer are adjusted to achieve the expected cooling effect; e) After the dynamometer is stopped, it must be artificially cooled for a period of time to prevent the internal parts from being dissipated due to heat not being dissipated in time. Damaged as much as possible, but imprecise control of artificial cooling operations can lead to under-cooling or over-cooling problems

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