A built-in impeller submersible electric pump with stator coil protection sleeve

Abstract

The invention discloses a vane wheel built-in submersible electric pump with a stator coil protection sleeve. The vane wheel built-in submersible electric pump comprises a vane guide body, an integrated rotor, a protection sleeve positioning seat, a motor stator and a ring-shaped stator shell, wherein two axial ends of the stator shell are correspondingly connected with the periphery of the protection sleeve positioning seat and the periphery of a guide shell; a protection sleeve is mounted on the vane guide body via the protection sleeve positioning seat; the guide shell is mounted on the protection sleeve via a sealing ring; the vane guide body, the guide shell, the sealing ring, the protection sleeve, the stator shell and the protection sleeve positioning seat form a sealed space; the space is filled with clean soft water; a winding coil of the motor stator is a water-resistant winding coil. According to the vane wheel built-in submersible electric pump, a winding is placed in the sealed space filled with the clean soft water; cooling of a stator winding during normal operation of a water filling type submersible motor is facilitated; meanwhile, adverse effects caused by contact between the stator winding of the ordinary vane wheel built-in submersible electric pump and environment water can be avoided; the safe reliability of the winding and even the whole unit is improved.

Description

technical field [0001] The invention belongs to the technical field of submersible electric pumps, and relates to an axial-flow impeller, a wet stator motor and a submersible electric pump, in particular to an impeller built-in submersible electric pump with a stator coil protection cover. Background technique [0002] Generally, the structure of a common impeller built-in submersible pump includes a coaxially connected water suction chamber, an impeller hub and a water outlet chamber, and a rotating shaft is arranged in the axial middle of the three. Axial-flow blades are installed on the radial outer circle of the impeller hub to form an impeller assembly. The motor rotor is fixed on the outer circumference of the annular impeller casing, forming a whole with the impeller casing. The impeller is located in the middle of the motor rotor. The motor rotor is located in the motor stator, and the motor rotor is a ring with the same inner diameter as the impeller outer diameter....

AI Technical Summary

Problems solved by technology

[0005] In order to solve the hidden danger of work safety caused by the direct contact of the stator winding of the common impeller built-in submersible electric pump with the environmental water, the invention improves the structure and rationally sets the stator coil protection cover to provide a simple structure and easy maintenance and disassembly. Built-in impeller submersible axial flow pump with stator coil protection sleeve;

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