A permanent magnet axial flow cooling fan for mechatronics of air cooling island in power plant

Abstract

The present invention belongs to the technical field of power plant accessories application, and specifically discloses a permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant, including a wind tube, a motor housing, a main shaft, a group of bearings, a circular outlet cavity, a cooling water cavity, an explosion-proof junction box, a stator, a rotor, a lubricating oil circulation duct, a hub, a plurality of blades, a group of oil filling pipes and an automatic lubrication device. The beneficial effects of the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant of the present invention are: 1. It has the characteristics of high efficiency, low speed, high torque, and high power. After being equipped with a controller / inverter, the speed can be adjusted from zero to the maximum; 2. The outer rotor transmission replaces the transmission system composed of the traditional motor, reducer, and hydraulic coupling, and the equipment layout saves a lot of space and saves initial investment; 3. The operation and maintenance of on-site electromechanical equipment is greatly reduced, saving manpower and maintenance materials, low failure rate, and reduced production accidents.

Description

Technical Field

[0001] The invention belongs to the technical field of power plant accessory application, and in particular relates to a permanent magnet axial flow cooling fan for mechatronics of an air cooling island in a power plant. Background Art

[0002] In industrial electric traction systems, the traditional transmission method is motor-coupling (or hydraulic coupling)-reducer-fan, etc. This typical equipment configuration has been widely used in cooling fans used in power plants, ports, mining, metallurgy, chemical industry, coal, building materials, food and transportation industries. In particular, high-power systems still use traditional methods, but traditional methods bring many problems to on-site operation and maintenance, which are mainly reflected in the following points: (1) low transmission efficiency, about 70-80%, (2) large workload and high cost of operation and maintenance, (3) large space required for equipment layout, and large initial project investment.

[0003] According to the national energy conservation and environmental protection requirements for enterprises, promoting the use of energy-saving and environmental protection technology and equipment is the future development direction. In recent years, with the rapid development of power electronics technology, computer technology, new switch reluctance motor control theory and rare earth permanent magnet materials, switch reluctance motors and permanent magnet synchronous motors have been rapidly promoted and applied, and the production of low-speed switch reluctance motors / permanent magnet synchronous motor outer rotor cooling fans has the technical conditions.

[0004] Therefore, based on the above problems, the present invention provides a permanent magnet axial flow cooling fan for the mechatronics of an air-cooled island in a power plant. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant. The overall structural design is reasonable, and the problems existing in the existing transmission fan system are solved. The operating state is stable and the operating efficiency is high.

[0006] Technical solution: The present invention provides a permanent magnet axial flow cooling fan for the mechatronics of an air-cooled island in a power plant, comprising a wind tube, and a motor housing arranged on the wind tube, and a main shaft arranged in the motor housing, and a group of bearings arranged at both ends of the motor housing and used in conjunction with the main shaft, and a circular outlet cavity and a cooling water cavity arranged in both ends of the main shaft, and an explosion-proof junction box arranged at one end of the main shaft, and a stator and a rotor arranged in the motor housing and used in conjunction with the main shaft, and a lubricating oil circulation duct arranged in the motor housing and used in conjunction with a group of bearings at both ends, and a hub arranged on the outer wall of one end of the rotor, and a plurality of blades arranged on the hub, and a group of oil filling pipes respectively connected to a group of bearings, and an automatic lubrication device respectively connected to a group of oil filling pipes.

[0007] According to the technical solution, the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant also includes a position sensor data transmission line, a temperature sensor data transmission line, a power supply wire, which are respectively connected to the explosion-proof junction box, and a power control box connected to the power supply wire, and a position sensor processing module and a temperature sensor processing module which are arranged in the power control box and are respectively connected to the position sensor data transmission line and the temperature sensor data transmission line, wherein the position sensor and the temperature sensor are respectively arranged in the motor housing and the circular outlet cavity.

[0008] In the technical solution, the permanent magnet axial flow cooling fan used for the mechatronics of the air-cooled island of a power plant also includes a protective net arranged on an end face of one side of the wind tube.

[0009] In the technical solution, the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant also includes a vibration sensor processing module arranged in the power control box, wherein the vibration sensor processing module is wirelessly connected to the vibration sensor arranged in the hub cavity.

[0010] Compared with the prior art, the beneficial effects of the permanent magnet axial flow cooling fan for the mechatronics of the air-cooling island of a power plant of the present invention are: 1. It has the characteristics of high efficiency, low speed, high torque and high power. After being equipped with a controller / frequency converter, the speed can be adjusted from zero to maximum; 2. The outer rotor transmission replaces the transmission system composed of the traditional motor, reducer and hydraulic coupling, and the equipment layout saves a lot of space and saves initial investment; 3. The operation and maintenance of on-site electromechanical equipment is greatly reduced, saving manpower and maintenance materials, with a low failure rate and reduced production accidents; 4. The efficiency of the integrated fan transmission system can be increased by 20%-30% compared with the traditional system; 5. The transmission system composed of the mechatronics axial flow cooling fan has no high-speed motor and gearbox, etc., and has the advantages of greatly reduced noise and more environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a permanent magnet axial flow cooling fan for mechatronics of an air-cooling island in a power plant according to the present invention;

[0012] Figure 2 It is a structural schematic diagram of a position sensor data transmission line, a temperature sensor data transmission line, a power supply wire, etc. of a permanent magnet axial flow cooling fan for an air-cooling island mechatronic integration of a power plant according to the present invention. DETAILED DESCRIPTION

[0013] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. Example

[0014] like Figure 1 and Figure 2A permanent magnet axial flow cooling fan for mechatronics of an air-cooled island in a power plant shown in the figure comprises a wind tube 1, and a motor housing 14 arranged on the wind tube 1, and a main shaft 10 arranged in the motor housing 14, and a group of bearings 7 arranged at both ends of the motor housing 14 and used in conjunction with the main shaft 23, and a circular outlet cavity 22 and a cooling water cavity 8 arranged in both ends of the main shaft 10, and a cooling water interface 9 with holes respectively arranged on the outer walls of both ends of the main shaft 10, and an explosion-proof junction box 18 arranged at one end of the main shaft 10, and a stator 5 and a rotor 6 arranged in the motor housing 14 and used in conjunction with the main shaft 10, and a lubricating oil circulation conduit 13 arranged in the motor housing 14 and used in conjunction with a group of bearings 7 at both ends, and a hub 4 arranged on the outer wall of one end of the rotor 6, and a plurality of blades 2 arranged on the hub 4, and a group of oil injection pipes 12 respectively connected to a group of bearings 7, and an automatic lubrication device 11 respectively connected to a group of oil injection pipes 12.

[0015] Further, the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant also includes a position sensor data transmission line 19, a temperature sensor data transmission line 20, a power supply wire 21, and a power supply control box 17 connected to the power supply wire 21, and a position sensor processing module 15 and a temperature sensor processing module 16 arranged in the power supply control box 17 and connected to the position sensor data transmission line 19 and the temperature sensor data transmission line 20, respectively, wherein the position sensor and the temperature sensor are respectively arranged in the motor housing 14 and in the circular outlet cavity 22 (position sensor, temperature sensor Figure 1 Not marked); and the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of the power plant, further comprising a protective net 3 arranged on one end face of the wind tube 1; and the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of the power plant, further comprising a vibration sensor processing module 23 arranged in the power control box 17, wherein the vibration sensor processing module 23 is wirelessly connected to the vibration sensor arranged in the cavity of the hub 4 (vibration sensor Figure 1 Not marked); and the circulating water device (circulating water device) used in conjunction with the main shaft 23 and the cooling water interface 9 with holes Figure 2 not indicated in the figure).

[0016] The structure of the permanent magnet axial flow cooling fan for the mechatronics of the air-cooled island of a power plant is described. The outer rotor of the motor is the fan drive hub and is an explosion-proof integrated structure. The rotor salient poles (magnetic steel) fixed inside the hub are processed into an outer rotor, which is both a rotor and a fan hub, forming a cooling fan rotor, and forming an integrated special cooling fan with the motor main shaft, stator main shaft device and outer sleeve.

[0017] The structure of the permanent magnet axial flow cooling fan used for the mechatronics of the air-cooled island of a power plant is a motor. The outer rotor of the motor is also the hub rotor of the cooling fan, and the blades are directly connected to the hub, realizing the innovation of integrated structure; the bearing grease lubrication adopts the MCU automatic control system for timed and quantitative intelligent lubrication; the circulation water device used in conjunction with the main shaft 23 and the perforated cooling water interface 9 is provided with liquid pressure detection and liquid flow detection outside the passage, and is electrically locked with the main control circuit. The explosion-proof hole structure of the hub plate corresponds to the position of the sensor inside the fan, solving the problem of the outer rotor structure for maintenance and installation; the outer rotor iron core punching structure is designed as an integrated structure in which the fan blades and the hub are directly connected.

[0018] The structure of the permanent magnet axial flow cooling fan used for the mechatronics of the air-cooled island of a power plant is provided with an insulating sleeve fixing structure where the internal power line and the measuring line enter the cavity; the outer rotor salient pole / magnet is directly fixed on the inner wall of the drum; the cooling method adopts a combination of natural heat dissipation of the drum shell and forced cooling of internal and external circulating water.

[0019] The permanent magnet axial flow cooling fan of the present structure used for the mechatronics of the air-cooled island of a power plant has both end faces processed into explosion-proof surfaces that meet electrical explosion-proof standards, which cooperate with the clamping end covers to form an explosion-proof housing, and the outer rotor hub structure blade device is fixed together; the stator is embedded in the silicon steel sheet core sleeve fixed to the main shaft around the cooling water interface, and the outer lead of the cable enters the main shaft device cavity and is led out to the power line and the monitoring line (terminal box); the cooling water is forced to form a circulation system through the cooling water interface 8; the power supply is designed to form a magnetic field and the drum magnetic steel outer rotor forms an electromagnetic power that rotates through the drum bearing 7, the outer rotor drum rotates and the inner main shaft does not move, and the main shaft is fixed to the foundation by installing a fixed base.

[0020] The permanent magnet axial flow cooling fan of this structure used for the mechatronics of the air-cooling island of a power plant is a mechatronics electric traction device with high efficiency, energy saving, convenient maintenance and low investment. Compared with traditional devices, it is a revolutionary technical product. This integrated cooling fan will surely be widely used in various industries such as power generation, chemical industry, mining, ports, etc., and will have broad economic and social benefits.

[0021] The above description is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements without departing from the principle of the present invention. These improvements should also be regarded as within the scope of protection of the present invention.

Claims

1. A permanent magnet axial flow cooling fan for mechatronics of air cooling island in power plant, characterized in that: The invention comprises a wind tube (1), a motor housing (14) arranged on the wind tube (1), a main shaft (10) arranged in the motor housing (14), a group of bearings (7) arranged at both ends of the motor housing (14) and used in conjunction with the main shaft (10), a circular outlet cavity (22) and a cooling water cavity (8) arranged in both ends of the main shaft (10), an explosion-proof junction box (18) arranged at one end of the main shaft (10), a stator (5) and a rotor (6) arranged in the motor housing (14) and used in conjunction with the main shaft (10), a lubricating oil circulation conduit (13) arranged in the motor housing (14) and used in conjunction with the group of bearings (7) at both ends, a hub (4) arranged on the outer wall of one end of the rotor (6), a plurality of blades (2) arranged on the hub (4), and a group of oil injection pipes (12) respectively connected to the group of bearings (7). and an automatic lubrication device (11) respectively connected to a group of oil injection pipes (12); further comprising a position sensor data transmission line (19), a temperature sensor data transmission line (20), and a power supply wire (21) respectively connected to an explosion-proof junction box (18); and a power supply control box (17) connected to the power supply wire (21); and a position sensor processing module (15) and a temperature sensor processing module (16) arranged in the power supply control box (17) and respectively connected to the position sensor data transmission line (19) and the temperature sensor data transmission line (20), wherein the position sensor and the temperature sensor are respectively arranged in a motor housing (14) and in a circular outlet cavity (22); and further comprising a vibration sensor processing module (23) arranged in the power supply control box (17), wherein the vibration sensor processing module (23) is wirelessly connected to a vibration sensor arranged in the cavity of the wheel hub (4).

2. According to claim 1, a permanent magnet axial flow cooling fan for mechatronics of an air cooling island in a power plant is characterized by: The permanent magnet axial flow cooling fan for the mechatronics of an air-cooled island in a power plant further comprises a protective net (3) arranged on an end surface of one side of the wind tube (1).

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