CN201204509Y - Water jacket cooling explosion-proof diving dual-function motor - Google Patents

Abstract

The utility model discloses a dual-function electric motor for heat dissipation and explosion-proof diving with a water jacket. The motor shaft penetrates into the inside of the motor casing and is supported by a front bearing and a rear bearing. A rotor assembly is fixed on the motor shaft inside the motor casing. The stator winding is fixed on the inner wall of the motor housing. The motor housing is composed of the motor outer shell and the motor inner shell. A partition is used to evenly separate the motor outer shell and the motor inner shell to form an annular water channel. The motor housing is provided with The outlet of the waterway and the inlet of the waterway, the outlet of the waterway is connected with the inlet of the waterway through the annular waterway, the outlet of the fluid medium and the inlet of the fluid medium are arranged on the motor casing, the outlet of the fluid medium is connected with the inlet of the fluid medium through the gap inside the motor casing , it can not only work in explosive gas environment in mines, but also work stably and reliably in diving environment for a long time. It is safe, reliable, and has good performance, and realizes two functions of explosion-proof diving.

Description

Water jacket cooling explosion-proof diving dual-function motor

Technical field:

The utility model relates to a dual-function motor for heat dissipation and explosion-proof diving with a water jacket that can operate stably for a long time in explosive gas or diving environments.

Background technique:

Although the existing three-phase asynchronous explosion-proof motor can work normally in the explosive gas environment, it cannot work underwater. Its explosion-proof mechanism is that once the explosive gas in the motor cavity explodes, the high-temperature and high-pressure gas generated by it will be released to the outside through the explosion-proof gap on the motor casing. Below the ignition point of the explosive gas, the explosive gas outside the motor will not be ignited. In a water-immersed environment, the explosion-proof motor can easily cause water to enter the motor cavity due to the explosion-proof gap, resulting in a decrease in the insulation performance of the motor winding and connection parts, short-circuit between turns or ground breakdown, making the motor unable to work normally. Therefore, this type The electric motor can't drag the submersible multistage centrifugal drainage pump for emergency drainage when the mine is flooded and flooded. Although the existing submersible motors can work in a submersible environment, since the cooling and heat dissipation of the stator and rotor must be carried out by internal water circulation and external water flow, it is impossible to operate in an explosive gas environment. less efficient.

Utility model content:

The purpose of this utility model is to provide a dual-function electric motor for heat dissipation and explosion-proof diving with a water jacket, which can work normally in the environment of air or mine explosive gas, and can work stably and reliably in the diving environment for a long time.

In order to achieve the above object, the utility model includes: motor shaft, shaft waterproof device, front bearing, front end cover, motor inlet line, stator winding, rotor assembly, heating detection device, fluid medium outlet, fluid medium inlet, rear end cover, rear Bearing, bearing cover, motor housing, the motor shaft penetrates into the motor housing and is supported by the front bearing and the rear bearing, the rotor assembly is fixed on the motor shaft inside the motor housing, and the stator winding is fixed on the motor housing The inner wall, the motor shell is composed of the motor shell and the motor inner shell, and the partition plate is used to evenly separate the motor shell and the motor inner shell to form an annular water channel. The motor shell is provided with a water channel outlet and a water channel inlet. The outlet communicates with the inlet of the water channel through an annular water channel. A fluid medium outlet and a fluid medium inlet are arranged on the motor housing, and the fluid medium outlet communicates with the fluid medium inlet through a gap inside the motor housing.

Like this, when the utility model operates in air and normal explosive gas environment, the outlet of the water channel and the inlet of the water channel are connected with the external circulating water pipe, and the heat generated by the operation of the motor is taken away by the water flowing in the motor jacket. The shaft waterproof device of the motor can prevent explosive gas and other substances from entering the inside of the motor, and the motor has an explosion-proof function. When the utility model is working underwater, the motor is filled with dry compressed air or insulating liquid through the fluid medium inlet, and the motor casing enters the internal and external pressure balance state through the pressure control device to ensure that the motor will not enter the water, which can Drag the submersible multi-stage centrifugal drainage pump to drain water. The heat generated by the motor operation depends on the external mine water cooling of the water jacket. This structure can not only ensure that the temperature of the motor is kept within the specified range in the submerged state, but also the motor will not It still has the ability to drag the submersible multi-stage centrifugal drainage pump under water to forcibly drain water, and can start and stop operation at any time. It can not only work in explosive gas environment in mines, but also work stably and reliably in diving environment for a long time. It is safe, reliable, and has good performance, and realizes two functions of explosion-proof diving.

Description of drawings:

Below in conjunction with accompanying drawing, the utility model is described in detail.

Fig. 1 is a schematic diagram of the internal structure of the utility model.

Detailed ways:

As can be seen from Figure 1, the utility model includes: motor shaft 1, shaft waterproof device 2, front bearing 3, front end cover 4, motor inlet line 6, stator winding 11, rotor assembly 12, heating detection device 13, fluid medium outlet 14, Fluid medium inlet 19, rear end cover 15, rear bearing 16, bearing cover 17, motor housing. The motor shaft 1 penetrates into the motor housing and is supported by the front bearing 3 and the rear bearing 16, the rotor assembly 12 is fixed on the motor shaft 1 inside the motor housing, and the stator winding 11 is fixed on the inner wall of the motor housing. The heating detection device 13 is used to detect the temperature of the motor, and the shaft waterproof device 2 is used to prevent explosive gas and other substances from entering the inside of the motor. The bearing cover 17 is used to protect the rear bearing, and the motor shaft 1 is used to connect the water pump. The motor casing is composed of a motor casing 7 and a motor inner casing 10 and forms a sandwich structure. A partition 8 is used to evenly separate the motor casing and the motor inner casing to form an annular water channel 9, and a water channel outlet is arranged on the motor casing. 5 and the waterway inlet 18, the waterway outlet 5 communicates with the waterway inlet 18 through the annular waterway 9. A fluid medium outlet 14 and a fluid medium inlet 19 are arranged on the motor housing, and the fluid medium outlet 14 communicates with the fluid medium inlet 19 through a gap inside the motor housing. The motor shell is made of corrosion-resistant and high-strength metal materials. In order to improve the safety performance, the motor is equipped with a moisture sensor inside. When the well is flooded, once the motor enters water, the moisture sensor will send an alarm signal to the ground motor operation monitoring system, and the motor will stop running. The specifications and sizes of the utility model can be made into series products according to the rated power.

Claims (1)

1, the water folder shell radiating explosion-proof difunctional motor of diving under water, comprise: motor shaft (1), axle water-tight device (2), fore bearing (3), front end housing (4), motor inlet wire (6), stator winding (11), rotor assembly (12), add heat detecting device (13), fluid media (medium) outlet (14), fluid media (medium) inlet (19), rear end cap (15), rear bearing (16), bearing cap (17), electric machine casing, motor shaft (1) penetrates into electric machine casing inside and is supported by fore bearing (3) and rear bearing (16), rotor assembly (12) is fixed on the motor shaft (1) of electric machine casing inside, stator winding (11) is fixed on the electric machine casing inwall, it is characterized in that electric machine casing is made of motor housing (7) and motor inner casing (10), between motor housing and motor inner casing, adopt dividing plate (8) evenly to separate and form water annulus (9), electric machine casing is provided with water channel outlet (5) and water channel inlet (18), water channel outlet (5) is connected with water channel inlet (18) by water annulus (9), electric machine casing is provided with fluid media (medium) outlet (14) and fluid media (medium) inlet (19), and fluid media (medium) outlet (14) is connected with fluid media (medium) inlet (19) by the gap of electric machine casing inside.