There are certain risks, mainly in two aspects. First, it is safe to use electricity. You must confirm that the power is off before doing anything. You must not operate during thunderstorms. Second, it is dangerous to work at high altitudes. You need to climb the tower, which takes about seven days. At 80 meters, there are usually climbing aids, so you must not climb on a windy day. As long as you pay attention to these two points, you will be fine
How many kilowatt hours does a wind turbine generate per revolution?
The transmission chain of a traditional wind turbine usually consists of a main shaft, a gearbox and a generator. According to the structure and use requirements of different types of wind turbines, the structural shapes of the large main shaft bearings will also be different. Among all installed wind turbines, 75% to 80% adopt the main shaft bearing support principle, that is, the inner ring of the main bearing is installed on the rotating main shaft.
The main shaft supports the hub and blades and transmits torque to the speed increaser. The main shaft bearing mainly bears radial force. Its performance not only affects the transmission efficiency, but also determines the main transmission chain. The maintenance cost is high, so it is required to have good alignment performance, vibration resistance and smooth operation.
On the spindle, the dual-bearing configuration is a relatively common bearing configuration. The bearing types used vary according to different design requirements, but the more common bearing configuration is spherical rollers. Sub-bearings or tapered rollers are configured with cylindrical roller bearings. High-power wind turbines use large cone angle double-row tapered roller bearings or three-row cylindrical roller bearings.
Among them, the two-point support form is the most typical. The bearing is installed in two independent or a common bearing seat. The rotor end or gearbox end bearing can be designed as a fixed end. bearings. The first form provides a more suitable ratio between radial and axial forces, and the structure of the spindle results in a larger diameter fixed-end bearing solution. In the second form, the position of the shoulder that transmits axial loads behaves more favorably in terms of spindle stress, since it avoids a step in the front bearing position.
If three-point support is used, one point is the fixed end bearing and the other two points are the torque support bearings in the gear box. It is also important to ensure the correct distance between the fixed and floating bearing locations during installation. The axial force must act on the fixed end bearing.
With three-point support, the force acting on the floating end bearing shows the effect of load on the inside of the gearbox. In a two-point supported main bearing arrangement, it is the true floating end bearing that bears this load. Therefore, two-point support shows its advantages over the influence of other factors such as vibration.
Is Beijing Jingye Bearing Co., Ltd. a state-owned enterprise?
Abstract: As renewable energy wind energy attracts more and more attention, the coverage of wind turbines is also increasing. high. Anyone who has seen a wind turbine knows that the three blades on each wind turbine do not rotate very quickly, so people think that the power generated by the wind turbine is not high. Then you know that the wind turbine How many kilowatt hours does it cycle? How to choose a small wind turbine? Let’s find out below. one,How many kilowatt-hours of electricity does a wind turbine generate per revolution?
The power of wind turbines is different, and the amount of electricity generated by each rotation of the wind turbine is also different. For example, the most common 2MW direct-drive wind energy generator can generate 2,000 degrees of electricity every 60 minutes when the wind energy is sufficient and stable, and it takes 3.5 seconds for the fan blades to rotate once, which is only 60 minutes. It is 3600 seconds, so the electricity generated by the generator per second is 0.56 kilowatt-hours. Then the electricity generated by the fan of the wind energy generator for each rotation is 0.56×3.5 seconds, which is 1.94 kilowatt-hours of electricity.
2. How to choose a small wind turbine
1. Wind blades
It is best to use high-strength nylon composite materials, which have high strength and good toughness. Anti-ultraviolet, anti-corrosion, resistant to high winds, with good aerodynamic performance and unique strong wind stall protection characteristics.
2. Bearings
It is best to be imported or domestic first-line brands. Such wind turbines have high working efficiency, wear resistance, durability and long service life.
3. Magnetic steel
Magnetic steel is best to use rare earth neodymium iron boron permanent magnets, which have high efficiency, light weight, low energy consumption and high output power.
4. Anti-strong wind tail design
It is best to have a pre-biased tail rudder design, which can automatically and accurately align the windward direction, increase the output power while taking into account both adjustment and strong wind protection.
5. Carbon brush and brush ring structure
Using such a device, the electricity of the wind turbine can be transmitted from the carbon brush to the brush ring, and the brush ring will lead the electricity out; wind power generation When the machine rotates, it will rotate accordingly to prevent the cable from being twisted.
6. Connection method
It is best to use casing connection, which is highly safe, will not cause overspeed, and is very convenient to install. You must know that installing wind turbines in the wild is not only a technical job, but also a physical job. Ease of installation is a boon to field installers.
No. According to the inquiry of Aiqicha, Beijing Jingye Bearing Co., Ltd. is not a state-owned enterprise but a private enterprise. Beijing Jingye Bearing Co., Ltd. was established in 2001 and is located at No. 5 Shengyu Street, Huangcun Town, Daxing District, Beijing. Therefore, Wind turbine bearings (including: main shaft bearings, yaw bearings, pitch bearings, speed increase box bearings, generator bearings), metallurgical equipment bearings, mining equipment bearings, petroleum machinery bearings, engineering machinery and port machinery bearings and other large and special bearings A national high-tech enterprise focusing on the development, production and sales of large and super large bearing products.