Electrical Encyclopedia: Transformer energy-saving technology alternatives will continue to be optimized

Overcapacity, many hidden dangers in quality, and disparate industries have become an industry predicament that the entire transformer industry cannot ignore. How to break the predicament has always been the subject of common thought among the industry, and the national energy-saving emission reduction policy may be in a difficult time. The transformer industry provides an outlet.

China's "12th Five-Year Plan for Energy-saving and Emission Reduction" detailed requirements to reduce power transformer losses during the 12th five-year period, in which the no-load loss is reduced by 10%~13% and the load loss is reduced by 17%~19%. High-energy-distribution power transformers are no longer in line with the development trend of the industry, and are faced with the need for technological upgrading and replacement. In the future, they will gradually be replaced by energy-saving, material-saving, environmental protection, and low-noise transformers.

From the perspective of the development of transformer energy-saving technologies, China’s transformers have undergone several series of substitution processes such as S7, S8, S9, S10, and S11. At present, it appears that large quantities of S13s have been used in the transformation of national urban networks and rural power grids. In the SH15 model, the no-load loss is reduced by 50%~80% compared with the S9 type transformer. However, in many areas, the S9 type product is still being used in large quantities, and some S7 type products are still being used far away from urban areas.

On the one hand, in the process of promoting energy-saving transformer products, since the sales price of the product is higher than the price of traditional transformers, the price is still the main factor affecting the popularization and promotion of energy-saving transformers. The cause of high prices is the high price of new materials. On the other hand, the current situation of the scattered distribution of energy-saving distribution transformers, together with the constraints of low entry barriers, inconsistent enterprises, lack of definition and standards, technical bottlenecks, high prices, inadequate subsidies, etc., have led to slow promotion of energy-saving transformers in China.

The biggest problem that plagues transformer manufacturers is that energy-conserving transformers still lack consistent definitions and standards. Coupled with short operating hours, there are some controversies and questions that users cannot afford completely, such as the stable function of amorphous alloy distribution transformers after operation. Poor performance, poor resistance to short circuits, increased noise and loss, etc. In addition to the most critical technical issues, testing standards and inspection technologies lag behind product development, and lack product performance evaluation, rating systems, and methods that reflect different levels of design and manufacturing processes.

It should be said that energy-saving transformers are the trend of the times. China is also improving relevant standards for energy-saving transformers and further regulating the industry market. In addition to energy efficiency standards and subsidy mechanisms, it is necessary to increase policies in terms of business models, technological breakthroughs, and the use of new materials. Promote the application of energy-saving transformers on a large scale.

The outer Spherical Ball Bearing is what we usually call the outer Spherical Bearing. The reason why it is called ball bearing is that it belongs to Deep Groove Ball Bearing, and the rolling element in it is steel ball.

Deep groove ball bearing outer spherical ball bearing is convenient to use the main characteristics of simple for loading and unloading, self-aligning ball bearings, standard tolerances for internal and external diameter reduction, adding tolerances to ensure the shaft with the light; each set of ball bearings are not alone to use and he must match to bearing inside the whole machine, the outer spherical bearing are of various shapes so the overall fit for various structural position after use. The ball bearing of the outer sphere can be divided into three categories according to the way of matching with the axis.
Outer spherical ball bearing with top wire
Its code is: UC200 series (light series), UC300 series (heavy duty Series), and deformation products UB (SB) 200 series. If the environmental load is small, UC200 series should be selected generally, otherwise UC300 series should be selected. Generally, there are two top threads on the outer spherical ball bearing, the angle between them is 120 degrees. The characteristic is that when the shaft fits with the shaft, the top wire is applied to the shaft to play a fixed role, but the environmental requirements for its matching must have a small vibration range. This kind of spherical ball bearing is widely used in textile machinery, ceramic machinery and other manufacturing industries.
Spherical spherical ball bearing with taper
Its name is: UK200 series, UK300 series. The inner diameter of the outer spherical ball bearing is the taper hole with a ratio of 1:12. When used, it must be combined with the tight sleeve. The characteristics of this kind of outer spherical bearing are: it can bear more load than the outer ball bearing with top wire. Because the diameter matched with the locking set the same model than with the top wire outer spherical ball bearing small, such as with the top wire outer spherical ball bearing UC209 inner diameter is 45mm, and is matched with the diameter of the shaft is 45mm, and if if change into a tapered outer spherical ball bearing, can only choose 45mm diameter sleeve, and 45mm adapter sleeve with taper outer spherical ball bearing is UK210 (of course, if the load is higher then you can choose the UK310). As a result, the load on UK210 is much larger than that of UC209.
Spherical spherical ball bearing with eccentric sleeve
Its name is: UEL200 series, UEL300 series, SA200 series. The main characteristic of this kind of spherical ball bearing is that there is a certain eccentricity on the upper end of the bearing, and the eccentric sleeve with the same eccentricity is cooperated with it. These bearings can also be said to be a special bearing, because it is mainly in agricultural machinery (harvester, straw machine, threshing machine etc.) on the use of this kind of outer spherical ball bearing is mainly used to beat hard structure, combined with the eccentric structure can effectively reduce the dynamic jump violently.

Double layer seal
The outer spherical ball bearings than other ordinary bearings is a double seal, because the outer spherical ball bearing the use of environmental conditions are harsh, especially agricultural bearing even more, and the double sealing to ensure the dust is not easy to enter the channel within the last two years, some companies developed the outer spherical bearing three lip seal the more greatly enhance dustproof ability, prolonging the service life of the bearing.
  

Spherical Bearing

Spherical Bearing,Small Spherical Bearing,Mini Spherical Bearing,Spherical Roller Thrust Bearing

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