Circulating cooling structure

Abstract

The invention discloses a circulating cooling structure which comprises a motor spindle. A shaft sleeve is installed outside the motor spindle and provided with a spiral groove, the bottom of the spiral groove is respectively provided with an oil outlet and an oil inlet, and a cooling structure and an oil temperature adjusting mechanism which are connected with each other are installed between the oil outlet and the oil inlet and connected with the oil inlet and the oil outlet through oil conduits. Due to the oil temperature adjusting mechanism, under the treatment of the cooling structure, the temperature of cooling oil is controlled at the normally working temperature of the motor spindle before the cooling oil enters a spiral shaft, the influence factors causing the damage to the motor spindle are further reduced, and working stability of the motor spindle is guaranteed.

Description

technical field [0001] The invention relates to a motor, in particular to a circulating cooling structure. Background technique [0002] When oil is drilled, the motor of the drilling rig works continuously for a long time. Due to the high-speed friction between the motor shaft and the shaft sleeve, a large amount of heat energy will be generated. If the heat is not dissipated in time, the temperature will soon exceed the range and damage the shaft, which will eventually lead to a decline in the performance of the motor. or burnt. At present, when cooling the motor shaft in China, cooling oil is only injected into the center hole of the motor shaft. Because this cooling method usually adopts an open cooling method, that is, the cooling medium added to the heat exchanger for heat exchange passes through the heat exchanger to transfer heat. After the exchange, it is directly discharged and cannot be recycled, thus causing great waste; and in the newly injected cooling oil, th...

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Problems solved by technology

[0002] When oil is drilled, the motor of the drilling rig works continuously for a long time. Due to the high-speed friction between the motor shaft and the shaft sleeve, a large amount of heat energy will be generated. If the heat is not dissipated in time, the temperature will soon exceed the range and damage the shaft, which will eventually lead to a decline in the performance of the motor. or burned

At present, when cooling the motor shaft in China, cooling oil is only injected into the center hole of the motor shaft. Because this cooling method usually adopts an open cooling method, that is, the cooling medium added to the heat exchanger for heat exchange passes through the heat exchanger to transfer heat. After the exchange, it is directly discharged and cannot be recycled, thus causing great waste; and in the newly injected cooling oil, the temperature of the cooling oil cannot be stabilized, and the motor shaft itself maintains a certain temperature under long-term work. When the oil is injected into the motor shaft when the temperature is low, it is easy to cause the shaft to suddenly cool and heat, and eventually cause the motor shaft to be damaged

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