Cooling device for motor of coal mill

Abstract

The utility model relates to a coal mill motor cooling device which comprises a main valve which is arranged on a miscellaneous compressed air main pipe in series and used for controlling opening, closing, flow and distribution of compressed air in the miscellaneous compressed air main pipe. The compressed air branch pipelines are connected in parallel in the direction in which the compressed air of the miscellaneous compressed air main pipe flows out; the compressed air branch pipelines are connected with one or more motor compressed air branch pipes, and the compressed air branch pipelines lead compressed air to the coal mill motor to be cooled through the motor compressed air branch pipes; the motor independent control valves are connected to the motor compressed air branch pipes in series and used for adjusting the flow of compressed air flowing to the corresponding motors to be cooled. According to the motor cooling device of the coal mill, the cooling efficiency can be improved, the dependence on auxiliary power can be reduced, and the field cable layout is simplified, so that the tidiness and sanitary conditions of a working environment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mill motor cooling equipment, in particular to a coal mill motor cooling device. Background Art

[0002] A motor is an electromagnetic device based on the principle of electromagnetic induction. Its primary function is to convert electrical energy into mechanical energy, generating driving torque. It is a vital power source for various mechanical equipment and electrical appliances. In industrial settings such as power plants, the proper operation of coal mill motors is crucial. However, due to high ambient temperatures or prolonged operation, coal mill motors can overheat, potentially causing burnout and failure of related equipment.

[0003] Traditional methods for cooling coal mill motors include natural ventilation and fan cooling. However, natural ventilation is less effective in high-temperature environments, while fan cooling, while providing better heat dissipation, consumes additional electricity and requires power supply wiring, which can lead to cluttered on-site cables and affect the cleanliness of the environment.

[0004] Therefore, there is an urgent need to develop a cooling method that can avoid the disadvantages of natural ventilation and fan cooling, improve cooling efficiency, reduce dependence on factory electricity, and effectively reduce motor temperature to meet the needs of efficient and safe operation of power plants. Summary of the Invention

[0005] The technical problem to be solved by the utility model is how to realize the cooling of the coal mill motor while avoiding the problem that the natural ventilation cooling has a poor effect in a high temperature environment and the fan cooling needs to consume additional electricity.

[0006] In order to solve the above technical problems, the utility model provides a coal mill motor cooling device, wherein a miscellaneous compressed air main pipe is provided in the area where the coal mill motor to be cooled is located, and the coal mill motor cooling device comprises: a main valve, which is provided in series on the miscellaneous compressed air main pipe and is used to control the switch, flow and distribution of compressed air in the miscellaneous compressed air main pipe; a compressed air branch pipe, which is connected in parallel to a plurality of compressed air branch pipes in the direction of compressed air outflow from the miscellaneous compressed air main pipe, and the compressed air branch pipe has two ends, one end is connected to the miscellaneous compressed air main pipe, and the other end is used to lead the compressed air to the coal mill motor to be cooled; a motor compressed air branch pipe, the compressed air branch pipe is connected to one or more motor compressed air branch pipes, and the compressed air branch pipe leads the compressed air to the coal mill motor to be cooled through the motor compressed air branch pipe; a motor individual control valve, which is connected in series to the motor compressed air branch pipe and is used to adjust the flow of compressed air flowing to the corresponding motor to be cooled to meet the actual cooling requirements of different motors.

[0007] According to an embodiment of the present invention, the coal mill motor cooling device may further include: a branch valve connected in series to the compressed air branch pipe, which is used to control whether the compressed air branch pipe is opened or closed, or to control the compressed air flow rate.

[0008] According to the embodiment of the present invention, the main valve can be a standard industrial valve structure, which is a metal valve that is resistant to high pressure and corrosion.

[0009] According to an embodiment of the present invention, the specification of the compressed air branch pipe can be DN50.

[0010] According to an embodiment of the present invention, the specification of the motor compressed air branch pipe can be DN25.

[0011] According to the embodiment of the present invention, the opening and closing control of the valve can be manual or automatic, depending on the user's needs and is not limited thereto.

[0012] According to an embodiment of the present invention, the coal mill motor cooling device may further include: a flow meter and a pressure sensor, which are arranged on the motor compressed air branch pipe and are used to monitor and adjust the compressed air flow used for cooling the coal mill motor.

[0013] According to an embodiment of the present invention, the coal mill motor cooling device may further include: a flow meter and a pressure sensor, which are arranged in the compressed air branch pipeline and are used to monitor and adjust the compressed air flow in the compressed air branch pipeline.

[0014] According to the embodiment of the present invention, the compressed air branch pipeline can be made of high-temperature resistant and corrosion-resistant pipes to ensure stable operation in a high-temperature environment.

[0015] Compared with the prior art, the technical solution provided by the embodiments of the present invention can achieve at least the following beneficial effects:

[0016] The coal mill motor cooling device of this utility model uses compressed air from within the plant as a cooling medium for active cooling, effectively reducing motor temperature while avoiding the drawbacks of natural ventilation and fan cooling. This compressed air cooling system not only improves cooling efficiency but also reduces reliance on plant electricity, simplifies on-site cable routing, and improves the cleanliness and sanitation of the working environment. The research and application of this new cooling device will bring innovative breakthroughs to motor cooling technology, meeting the needs of efficient and safe power plant operations.

[0017] This utility model utilizes unused compressed air for cooling. While conventional cooling systems typically rely on additional electricity to drive axial fans or other cooling equipment, this technology cleverly utilizes existing unused compressed air for cooling. This approach not only reduces the need for additional electricity but also fully utilizes existing resources, thereby reducing operating costs and energy consumption.

[0018] The utility model is provided with a main valve of the coal mill cooling system, which can effectively control the flow and distribution of compressed air, thereby ensuring that the cooling air can be flexibly adjusted according to needs, solving the distribution problem of the traditional cooling system.

[0019] This utility model utilizes branch pipes for compressed air and separate motor control valves to deliver compressed air to each motor. Separate control valves are installed on each motor's pipe, allowing for independent cooling adjustments for each motor. This design allows the coal mill cooling system to be precisely adjusted to the specific needs of each motor, enhancing the system's flexibility and adaptability.

[0020] This new system comprehensively considers system stability and environmental cleanliness. It not only focuses on cooling efficiency but also considers overall system stability and site cleanliness. The use of high-temperature and corrosion-resistant materials ensures reliable system operation in high-temperature environments. Furthermore, simplified cable routing reduces disruption to the site environment.

[0021] According to the coal mill motor cooling device of the present invention, active cooling is performed by introducing compressed air flow within the plant as a cooling medium, which can effectively reduce the temperature of the motor while avoiding the disadvantages of natural ventilation and fan cooling. The compressed air cooling system not only improves cooling efficiency, but also reduces dependence on plant electricity and simplifies on-site cable laying, thereby improving the cleanliness and sanitary conditions of the working environment. This technology has significantly improved cooling efficiency, energy utilization, system flexibility, and environmental impact, reflecting its comprehensive advantages in practical applications. The research and application of this new cooling device will bring innovative breakthroughs to motor cooling technology and meet the needs of efficient and safe operation of power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limiting the present invention.

[0023] Figure 1 1 is a schematic diagram showing a cooling device for a coal mill motor according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1Partial enlarged image. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar expressions used in the specification and claims of this utility model patent application do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation on quantity, but rather indicate the presence of at least one.

[0027] Figure 1 1 is a schematic diagram showing a cooling device for a coal mill motor according to an embodiment of the present invention; Figure 2 yes Figure 1 Partial enlarged image.

[0028] The area where the coal mill motor to be cooled is located is equipped with a main pipe for miscellaneous compressed air, such as Figure 1 and Figure 2 As shown, the coal mill motor cooling device includes: a main valve 1, a compressed air branch pipeline 2, a motor compressed air branch pipe 4 and a motor individual control valve 5.

[0029] A main valve 1 is arranged in series on the miscellaneous compressed air main pipe to control the switch, flow and distribution of compressed air in the miscellaneous compressed air main pipe.

[0030] A plurality of compressed air branch pipes 2 are connected in parallel in the direction of compressed air outflow from the miscellaneous compressed air main pipe. The compressed air branch pipe 2 has two ends, one end is connected to the miscellaneous compressed air main pipe, and the other end is used to guide the compressed air to the coal mill motor to be cooled.

[0031] The compressed air branch pipe 2 is connected to one or more motor compressed air branch pipes 4, and the compressed air branch pipe 2 leads the compressed air to the coal mill motor to be cooled through the motor compressed air branch pipes 4.

[0032] The motor individual control valve 5 is connected in series to the motor compressed air branch pipe 4 to adjust the flow of compressed air to the corresponding motor 6 to be cooled to meet the actual cooling requirements of different motors.

[0033] This technical solution uses compressed air from the plant as a cooling air source to cool the coal mill motor. When in use, the compressed air is delivered to the coal mill motor 6 for purging and cooling, effectively reducing the serious heat radiation of the coal mill body and the high temperature of the motor operating environment. It effectively avoids the risks of temporary power supply fires and scattered power lines caused by the use of external axial flow fans, and increases energy utilization efficiency and safety performance. Active cooling by introducing compressed air flow from the plant as a cooling medium can effectively reduce the temperature of the motor while avoiding the disadvantages of natural ventilation and fan cooling. The compressed air cooling system not only improves cooling efficiency, but also reduces dependence on plant electricity, simplifies on-site cable routing, and thus improves the cleanliness and sanitary conditions of the working environment.

[0034] The utility model is provided with a main valve 1 of the coal mill cooling system, which can effectively control the flow and distribution of compressed air, thereby ensuring that the cooling air can be flexibly adjusted according to needs, and solving the distribution problem of the traditional cooling system.

[0035] This utility model provides a compressed air branch pipe 2 and a separate motor control valve 5. The branch pipe delivers compressed air to each motor separately, and a separate control valve is installed on each motor's pipe, allowing independent cooling adjustment for each motor. This design allows the coal mill cooling system to be precisely adjusted to the specific needs of each motor, improving the system's flexibility and adaptability.

[0036] According to one or some embodiments of the present invention, the coal mill motor cooling device also includes: a branch valve 3, which is connected in series to the compressed air branch pipe 2 and is used to control whether the compressed air branch pipe 2 is opened or closed, or to control the compressed air flow rate.

[0037] According to one or some embodiments of the present invention, the main valve 1 is a standard industrial valve structure, and is a metal valve that is resistant to high pressure and corrosion.

[0038] According to one or some embodiments of the present invention, the specification of the compressed air branch pipe 2 is DN50.

[0039] According to one or some embodiments of the present invention, the specification of the motor compressed air branch pipe 4 is DN25.

[0040] According to one or some embodiments of the present invention, the valve is manually opened and closed.

[0041] According to one or some embodiments of the present invention, the valve is automatically switched on and off.

[0042] According to one or some embodiments of the present invention, the coal mill motor cooling device further includes: a flow meter and a pressure sensor, which are arranged on the motor compressed air branch pipe 4 and are used to monitor and adjust the compressed air flow used for cooling the coal mill motor.

[0043] According to one or some embodiments of the present invention, the coal mill motor cooling device further comprises: a flow meter and a pressure sensor, which are arranged in the compressed air branch pipe 2 and are used to monitor and adjust the compressed air flow in the compressed air branch pipe 2.

[0044] According to one or some embodiments of the present invention, the compressed air branch pipe 2 is made of high-temperature resistant and corrosion-resistant pipe material to ensure stable operation in a high-temperature environment.

[0045] This new system comprehensively considers system stability and environmental cleanliness. It not only focuses on cooling efficiency but also considers overall system stability and site cleanliness. The use of high-temperature and corrosion-resistant materials ensures reliable system operation in high-temperature environments. Furthermore, simplified cable routing reduces disruption to the site environment.

[0046] According to the coal mill motor cooling device of the present invention, active cooling is performed by introducing compressed air flow within the plant as a cooling medium, which can effectively reduce the temperature of the motor while avoiding the disadvantages of natural ventilation and fan cooling. The compressed air cooling system not only improves cooling efficiency, but also reduces dependence on plant electricity and simplifies on-site cable laying, thereby improving the cleanliness and sanitary conditions of the working environment. This technology has significantly improved cooling efficiency, energy utilization, system flexibility, and environmental impact, reflecting its comprehensive advantages in practical applications. The research and application of this new cooling device will bring innovative breakthroughs to motor cooling technology and meet the needs of efficient and safe operation of power plants.

[0047] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A coal mill motor cooling device, characterized in that: The area where the coal mill motor to be cooled is located is provided with a miscellaneous compressed air main pipe, and the coal mill motor cooling device includes: A main valve is provided in series on the miscellaneous compressed air main pipe, and is used to control the switch, flow rate and distribution of compressed air in the miscellaneous compressed air main pipe; a compressed air branch pipe connected in parallel to a plurality of compressed air branch pipes in the direction of compressed air outflow from the miscellaneous compressed air main pipe, the compressed air branch pipe having two ends, one end being connected to the miscellaneous compressed air main pipe, and the other end leading the compressed air to the coal mill motor to be cooled; a motor compressed air branch pipe, wherein the compressed air branch pipe is connected to one or more motor compressed air branch pipes, and the compressed air branch pipe guides the compressed air to the coal mill motor to be cooled through the motor compressed air branch pipes; The motor controls the valve independently, and the motor controls the valve independently, and is connected in series to the motor compressed air branch pipe, and is used to adjust the flow rate of the compressed air flowing to the corresponding motor to be cooled, so as to meet the actual cooling requirements of different motors.

2. The coal mill motor cooling device according to claim 1, characterized in that: Also includes: A branch valve is connected in series to the compressed air branch pipe, and is used to control whether the compressed air branch pipe is opened or closed, or to control the compressed air flow rate.

3. The coal mill motor cooling device according to claim 1, characterized in that: The main valve is a standard industrial valve structure and is a metal valve that is resistant to high pressure and corrosion.

4. The coal mill motor cooling device according to claim 1, characterized in that: The specification of the compressed air branch pipeline is DN50.

5. The coal mill motor cooling device according to claim 1, characterized in that: The specification of the motor compressed air branch pipe is DN25.

6. The coal mill motor cooling device according to claim 1, characterized in that: The valve switch control is manually operated.

7. The coal mill motor cooling device according to claim 1, characterized in that: The valve switch control is automatic.

8. The coal mill motor cooling device according to claim 1, characterized in that: Also includes: The flow meter and pressure sensor are arranged on the motor compressed air branch pipe and are used to monitor and adjust the flow of compressed air used for cooling the coal mill motor.

9. The coal mill motor cooling device according to claim 1, characterized in that: Also includes: The flow meter and the pressure sensor are arranged in the compressed air branch pipeline and are used to monitor and adjust the compressed air flow in the compressed air branch pipeline.

10. The coal mill motor cooling device according to claim 1, characterized in that: The compressed air branch pipeline adopts high temperature resistant and corrosion resistant pipes to ensure stable operation in high temperature environment.

Images