Motor cooling structure for mine main drainage pump room

Abstract

The utility model discloses a motor cooling structure for a main drainage pump room of a mine, which belongs to the technical field of motor cooling and comprises a motor, a circulating pipeline and a suction well, a drainage cover is arranged at an air outlet of the motor, a drainage pipe extending into the suction well is arranged on the drainage cover, and a rubber pipe is arranged on the circulating pipeline. One end of the rubber pipe is connected with the circulation pipeline through the electric ball valve, the other end of the rubber pipe is provided with the spraying pipeline, the spraying pipeline is arranged in the water suction well, energy conservation and environmental protection are achieved, cost is low, the circulation pipeline and the water suction well are connected, redundant refrigeration equipment and pumps do not need to be installed, and the temperature of air in a pump room can be rapidly reduced. The operation environment of the equipment is greatly improved, the operation temperature of the motor is reduced after the environment temperature is reduced, the equipment operation is safer and more reliable, insulation and part aging of the motor in a high-temperature state are prevented, the service life of the motor is prolonged, and the drainage reliability of a main drainage pump room is improved.

Description

Technical Field

[0001] This utility model belongs to the field of motor cooling technology, specifically a motor cooling structure for a mine main drainage pump room. Background Technology

[0002] The YKK series three-phase asynchronous motor is a cage-type asynchronous motor with an enclosed air-to-air cooler. This motor features high efficiency, energy saving, low noise, low vibration, and reliable performance. It can drive various types of machinery, such as fans, compressors, water pumps, crushers, machine tools, and other equipment. It can also be used as a prime mover in coal mines, the machinery industry, power plants, and various industrial and mining enterprises. The YKK series three-phase asynchronous motor has an IP44 or IP54 protection rating and uses IC611 cooling. An air-to-air cooler is installed on the motor, and an external fan with a fan cover is mounted on the motor shaft (not at the shaft extension end). This cooling method utilizes forced ventilation cooling via a fan. The cooling air inside the motor circulates internally, driven by the internal fan. When the internal cooling air flows over the stator and rotor cores, coils, and other heat-generating components, it carries away their heat; when the internal cooling air flows through the air-to-air cooler, it transfers heat to the cooler. The external fan is installed inside the fan cover, driving the ambient air to flow through the cooling pipes of the cooler, carrying away heat and dissipating it into the surrounding environment, thus achieving the purpose of cooling the motor's internal temperature.

[0003] However, in the main drainage pump room of the mine, which is an electromechanical chamber with relatively low airflow, the ventilation is much worse than in the main mine roadways. While the motors are cooled by forced ventilation from fans, the heat expelled from the motors cannot be carried away by the airflow in time. This cooling method causes the ambient temperature in the pump room to rise continuously. The motors exchange heat using air as a cooling medium, and the hotter air is then re-entered into the motor as a cooling medium. Over time, this affects the cooling effect, causing the motor temperature to rise further. Especially during the rainy season in summer, when pumps are running for extended periods, the operating temperature of motors in the pump room ranges from around 65°C to around 80°C. Compared to other months, the motor operating temperature is significantly higher by more than 10°C, resulting in poor cooling. Utility Model Content

[0004] In order to overcome the shortcomings of poor motor cooling effect in the existing technology, this utility model provides a motor cooling structure for the main drainage pump room in mines.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a motor cooling structure for a main drainage pump room in a mine, including a motor, a circulation pipeline and a water intake well. A diversion hood is set at the air outlet of the motor, and a diversion pipe extending into the water intake well is provided on the diversion hood. A rubber hose is provided on the circulation pipeline. One end of the rubber hose is connected to the circulation pipeline through an electric ball valve, and a spray pipeline is installed at the other end of the rubber hose. The spray pipeline is arranged in the water intake well.

[0006] As a further improvement of this utility model, the bottom of the drainage pipe is higher than the water level in the suction well.

[0007] As a further improvement of this utility model, several atomizing nozzles are installed on the spray pipe.

[0008] As a further improvement of this utility model, a manual valve is provided at the inlet end of the spray pipe.

[0009] As a further improvement of this utility model, a fan is installed on the drainage pipe.

[0010] As a further improvement of this utility model, an air distribution pipe is provided at the bottom of the drainage tube.

[0011] As can be seen from the above technical solutions, the beneficial effects of this utility model are: effective cooling; the suction well and spray pipes can quickly reduce the air temperature in the pump room, improving the working environment for employees and reducing their fatigue; energy saving and environmental protection; compared with traditional refrigeration systems, spray cooling requires less energy and does not produce refrigerants or harmful substances such as carbon dioxide; low cost; by using the connection to the circulation pipes and suction well, there is no need to install extra refrigeration equipment and pumps, avoiding a large amount of electricity consumption and equipment occupation, resulting in relatively low cost, and lower installation and maintenance costs; and significantly improved equipment operating environment. Lower ambient temperature also reduces the operating temperature of the motor, making equipment operation safer and more reliable, preventing aging of insulation and components under high-temperature conditions, extending the motor's service life, and improving the drainage reliability of the main drainage pump room. Attached Figure Description

[0012] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0014] Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention.

[0015] In the diagram: 1. Motor; 2. Suction well; 3. Drainage hood; 4. Drainage pipe; 5. Circulation pipeline; 6. Rubber hose; 7. Electric ball valve; 8. Spray pipeline; 9. Atomizing nozzle; 10. Manual valve; 11. Air distribution pipe; 12. Fan. Detailed Implementation

[0016] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0017] Example 1

[0018] like Figure 1 As shown, this utility model discloses a motor cooling structure for a main drainage pump room in a mine, including a motor 1, a circulation pipeline 5, and a suction well 2. A diversion hood 3 is installed at the air outlet of the motor 1, and a diversion pipe 4 extending into the suction well 2 is provided on the diversion hood 3. A rubber hose 6 is provided on the circulation pipeline 5. One end of the rubber hose 6 is connected to the circulation pipeline 5 through an electric ball valve 7, and a spray pipeline 8 is installed on the other end of the rubber hose 6. The spray pipeline 8 is arranged inside the suction well 2.

[0019] The bottom of the diversion pipe 4 is higher than the water level in the suction well 2. The inlet end of the spray pipe 8 is equipped with a manual valve 10, which is normally open. When the equipment is not in operation for a long time, the manual valve 10 should be closed in time to improve safety.

[0020] Suction well 2 and circulation pipeline 5 are standard features in the main drainage pump house of a mine, with circulation pipeline 5 playing a crucial role in this system. They are typically connected to the pumps to redirect pumped groundwater back into the mine's drainage system for further treatment and discharge. This design ensures the continuity and efficiency of the drainage process while also helping to maintain the water level within the pump house at a safe level. Furthermore, circulation pipeline 5 helps regulate the pump body temperature, preventing overheating and thus extending the pump's service life.

[0021] A shroud 3 is installed at the air outlet of motor 1. The shroud 3 concentrates the high-temperature airflow after circulation and cooling within motor 1 and guides it through the shroud 4 into the suction well 2 inside the pump room. This prevents the high-temperature airflow from directly entering the pump room environment and utilizes the low-temperature environment within the suction well 2 for initial cooling of the high-temperature airflow. The circulation pipeline 5 has a sufficient water supply for cooling. A hose 6 is installed on the circulation pipeline 5, with one end connected to the circulation pipeline 5 via an electric ball valve 7. The other end of the hose 6 is connected to a spray pipeline 8, which is located inside the suction well 2. The electric ball valve 7 is linked to the pump's start and stop. When the pump starts, the electric ball valve 7 automatically opens, and the low-temperature water in the circulation pipeline 5 sprays through the spray pipeline 8 into the suction well 2, providing secondary cooling to the high-temperature airflow. This quickly lowers the air temperature inside the pump room, improving the working environment for employees and reducing fatigue. When the pump stops, the electric ball valve 7 automatically closes.

[0022] Several atomizing nozzles 9 are installed on the spray pipe 8. These nozzles spray water in an atomized form, creating mist water. The air temperature is lowered by utilizing the property of water to absorb heat during evaporation. When the water is sprayed out, the water particles quickly come into contact with the air and absorb heat through rapid evaporation, causing the air temperature to drop rapidly.

[0023] Example 2

[0024] Reference Figure 2 The difference between this embodiment and the first embodiment is that a fan 12 is installed on the diversion pipe 4. The fan 12 creates a negative pressure inside the diversion hood 3, which facilitates the concentration of the high-temperature airflow after circulating cooling in the motor 1 and diverts it into the water intake well 2 in the pump room through the diversion pipe 4. The bottom of the diversion pipe 4 is provided with a gas distribution pipe 11, which distributes the gas evenly into the water intake well 2, thereby improving the cooling effect.

[0025] This structure neither disrupts the mine's normal ventilation system nor requires alteration to the cooling structure and method of motor 1 itself, while simultaneously achieving rapid cooling of motor 1. During motor 1's operation, it also improves the ambient temperature within the pump room, achieving a dual benefit. After implementing the cooling measures, although the pump's drainage time was significantly extended during the rainy season from June to September, actual measurements showed that the operating temperature of motor 1 was approximately 15°C lower than in previous years, essentially matching the operating temperature during the dry season and winter, achieving the desired cooling effect.

[0026] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A motor cooling structure for a main drainage pump room in a mine, characterized in that: Includes a motor (1), a circulation pipeline (5) and a water intake well (2). A shroud (3) is installed at the air outlet of the motor (1). A shroud (3) is provided with a shroud (4) extending into the water intake well (2). A hose (6) is provided on the circulation pipeline (5). One end of the hose (6) is connected to the circulation pipeline (5) through an electric ball valve (7). A spray pipeline (8) is installed on the other end of the hose (6). The spray pipeline (8) is arranged inside the water intake well (2).

2. The motor cooling structure for a main drainage pump room in a mine according to claim 1, characterized in that: The bottom of the drainage pipe (4) is higher than the water level in the suction well (2).

3. The motor cooling structure for a mine main drainage pump room according to claim 2, characterized in that: Several atomizing nozzles (9) are installed on the spray pipe (8).

4. The motor cooling structure for a mine main drainage pump room according to claim 3, characterized in that: The inlet end of the spray pipe (8) is equipped with a manual valve (10).

5. The motor cooling structure for a mine main drainage pump room according to claim 4, characterized in that: A fan (12) is installed on the drainage pipe (4).

6. The motor cooling structure for a main drainage pump room in a mine according to claim 5, characterized in that: The bottom of the drainage tube (4) is provided with an air distribution tube (11).

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