Heat dissipation loop suitable for large-power mobile closed-type hydraulic system

Abstract

The invention discloses a heat dissipation loop suitable for a large-power mobile closed-type hydraulic system. The heat dissipation loop comprises a closed-type hydraulic pump, a hydraulic motor, a hydraulic oil tank, a radiator, a cooling control device and a pipeline. The closed-type hydraulic pump is connected with the hydraulic motor through the pipeline, and the radiator is in series connection between an oil outlet of the hydraulic motor and an oil suction port of the closed-type hydraulic pump or in series connection between an oil outlet of the closed-type hydraulic pump and an oil inlet of the hydraulic motor. The closed-type hydraulic pump is connected with a leakage oil line of the hydraulic motor and the hydraulic oil tank. The radiator allows the flow of the passing hydraulicoil to be the total circulation flow of the hydraulic system, and the pressure bearing range is 0-35 Mpa. A liquid inlet and a liquid outlet of the radiator are connected with corresponding connectors of the cooling control system separately for circulating a cooling solution. The cooling control device controls the flow of the cooling solution entering the radiator according to the collected oiltemperature of the hydraulic system, so that the closed-type hydraulic system runs in a set temperature section. The heat dissipation loop has the high heat dissipation amount which can be adjusted.

Description

technical field [0001] The invention relates to the technical field of hydraulic drive and heat management, in particular to a cooling circuit suitable for a high-power mobile closed hydraulic system. Background technique [0002] Closed hydraulic system, because of its high reliability, flexible layout, quick response and many other advantages, has been widely used in various special vehicles and other mobile equipment. The heat dissipation circuit of the traditional closed hydraulic system is generally connected with a flushing device in parallel with the main oil return circuit on the oil suction side of the system, and the hot oil overflowed after the charge pump is replenished is introduced into the radiator for heat exchange. In order to further enhance the heat dissipation effect, the leakage oil circuit of the closed pump and the hydraulic motor can also be introduced into the radiator for heat dissipation. However, the total flow of flushing device and system leaka...

AI Technical Summary

Problems solved by technology

Often the hydraulic oil grades used in the hydraulic system of the vehicle are not uniform, and the traditional cooling circuit does not have the function of actively adjusting the hydraulic oil temperature, so the oil adaptability of the traditional hydraulic system cooling circuit is poor

[0004] Low working efficiency and poor adaptability of oil products severely restrict the further popularization and application of high-power closed hydraulic systems in vehicle equipment

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