Vertical shielding motor heat exchanger fault processing device and use method

Abstract

The invention discloses a vertical shielding motor heat exchanger fault processing device and a using method, a heat exchanger of the device is arranged on the outer side of a motor shell, spiral pipes in the heat exchanger are wound in an inner layer and an outer layer and are connected in parallel on two sides, and an annular water storage container is fixedly arranged above the heat exchanger and on the outer side of a forge piece on the shell; the annular partition plate with the holes divides the water storage container into an air cavity and a water cavity which are communicated with each other, the air cavity is connected with the heat exchanger through the ascending pipe, the water cavity is connected with the heat exchanger through the descending pipe, and the temperature and water quantity adjusting valve is installed on the descending pipe. Low-temperature cooling water in the water cavity enters the spiral groove in the heat exchanger through the descending pipe and becomes high-temperature hot water after absorbing heat to enter the air cavity through the ascending pipe, natural circulation flow of secondary cooling water is formed, primary cooling water in the spiral pipe is cooled in an enhanced mode, the time for primary lubricating water to reach the alarm temperature can be prolonged, and the thermal safety of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of thermal control and thermal management safety of a motor cooling system, and in particular relates to a fault processing device for a vertical shielded motor heat exchanger and a method for using the same. Background technique [0002] Shielded motor is a motor used to transport highly toxic, corrosive, radioactive, flammable and explosive, precious liquids and liquids that will cause serious harm after leakage. It is widely used in nuclear power, chemical industry and other fields. The shielded motor cooling generally adopts the design of primary and secondary dual cooling water system. The primary cooling water driven by the rotating auxiliary impeller inside the motor, the primary cooling water absorbs the heat of the stator and rotor shielding sleeve, stator winding, iron core and other components inside the motor, and lubricates the bearings at the same time. , after the primary cooling water leaves ...

AI Technical Summary

Problems solved by technology

[0004] When the heat exchanger of the vertical shielded motor fails, such as the secondary cooling water supply of the heat exchanger is cut off, the inlet and outlet valves of the secondary cooling water of the heat exchanger are closed, and the flow rate of the secondary cooling water in the spiral groove is zero, that is, the state of "dead water" , at this time, the motor is still running normally, and the phenomenon of electromagnetic loss and heating is still going on. The primary cooling water circulates normally inside the motor and the spiral tube, but the secondary cooling water circuit of the heat exchanger is faulty, and the primary cooling water and secondary cooling water cannot be realized. Conventional heat exchange will cause the temperature of the primary cooling water of the motor to rise continuously. When the temperature is too high, the motor will be damaged, and even more serious safety problems will occur. Therefore, in view of this situation, the secondary cooling water must be improved. Water circulation, strengthen the heat transfer between the primary cooling water and the secondary cooling water, and reserve a longer time for troubleshooting

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