Oil-filled motor

Abstract

The invention provides an oil-filled motor, belonging to the technical field of motor equipment. The oil-filled motor solves the problems that a hole needs to be formed in an upper cap and the operation is tedious when the existing oil-filled motor is subjected to airtightness detection. The oil-filled motor comprises a motor cylinder, an upper bearing pedestal and an upper cap, wherein the upper bearing pedestal is fixed connected to the end part of the motor cylinder, the upper cap is fixed connected on the upper bearing pedestal, a detection hole is formed on the upper bearing pedestal, an outgoing wire sheath is fixedly inserted in the detection hole, a wire passing hole is formed in the outgoing wire sheath along the axial direction, one end of the outgoing wire sheath extends into an oil cavity, a limiting part is arranged on the outer circumferential wall of the end extending into the oil cavity, and the end, extending into the oil cavity, of the outgoing wire sheath is further provided with a leading-in structure which can guide a gas in the oil cavity to extrude the outgoing wire sheath and passes through a space between the outer circumferential wall of the outgoing wire sheath and the hole wall of the detection hole. When the oil-filled motor provided by the invention is subjected to airtightness detection, the hole does not need be formed in the upper cap, and the airtightness of the gas cavity and the oil cavity can be detected simulatenously in a single test.

Description

technical field [0001] The invention belongs to the technical field of motor equipment, and relates to an oil-filled motor. Background technique [0002] Oil-filled motors are mainly used to drive submersible pumps, and are widely used in agriculture, industrial and mining enterprises, coal mine drainage, urban water supply, and groundwater extraction in plateau areas. weakly corrosive water. like figure 1 As shown, the existing oil-filled motor is composed of an organic barrel 1, an upper bearing seat 2, and an upper cap 3. An oil cavity is formed in the barrel, which needs to be filled with a certain amount of lubricating oil, and an air cavity is formed in the upper cap 3. Electronic components are installed, so the air cavity and the oil cavity need to be sealed independently to prevent the lubricating oil in the oil cavity from entering the air cavity and damaging the electronic components, and the cables in the oil cavity need to enter the air cavity, so if figure ...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the existing oil-filled motor is composed of an organic barrel 1, an upper bearing seat 2, and an upper cap 3. An oil cavity is formed in the barrel, which needs to be filled with a certain amount of lubricating oil, and an air cavity is formed in the upper cap 3. Electronic components are installed, so the air cavity and the oil cavity need to be sealed independently to prevent the lubricating oil in the oil cavity from entering the air cavity and damaging the electronic components, and the cables in the oil cavity need to enter the air cavity, so if figure 2 As shown, an outlet hole 7 is opened on the upper bearing seat 2, and an outlet sheath 6 is arranged in the outlet hole 7, and the outlet sheath 6 is locked and fixed by the sealing bolt 71. After the oil-filled motor is assembled, the oil The airtightness of the chamber and the air chamber is tested. At this time, it is necessary to open holes for the barrel 1 and the upper cap 3, and then inject high-pressure gas into the air chamber and the oil chamber one by one for testing. After the test, the opened holes need to be sealed. , because the upper cap 3 is usually made of stainless steel sheets, it is difficult to fix the bolts, so it is necessary to weld the nut at the opening of the upper cap, and then seal it through the bolt and the gasket, not only two operations are required to detect the air cavity and oil during the test At the same time, the opening and resealing of the upper cap will complicate the process and increase the cost, and will affect the airtightness of the air cavity during later use

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