The emergence of LED itself is an innovation, its application space has become very open, and the subsequent impact is far-reaching. Yu Anqi, deputy director of the National Electric Light Source Quality Supervision and Inspection Center (Shanghai), believes that the whole society should strengthen its understanding. Do not talk about LED lighting and simply understand it as replacing traditional lamps. The deeper meaning of LEDs is intelligent control for road lighting and indoor lighting. In addition to energy saving, the biggest benefit brought by commercial lighting is that it is humanized and the maintenance cost of lighting facilities is greatly reduced, which is of great significance for building a conservation-oriented society. The advantage of intelligent lighting is obvious that only LED can exert unlimited imagination space, and it can satisfy people's various lighting needs through modern control technology, and at the same time realize energy saving and energy saving of appliances. Yu Anqi said that the Shanghai Yangtze River Tunnel with a length of 9 kilometers is an example of intelligent lighting. In general, the brightness contrast inside and outside the tunnel is very large, the entrance is very bright during the day, but the inside is very dark, and the situation is reversed at night. Under such lighting conditions, vehicles entering and exiting the tunnel create visual blind spots, and for the driver, a transitional illumination is needed to balance this brightness contrast. In the past, it relied mainly on manual adjustment of tunnel lighting brightness according to internal and external brightness contrast, but now it can realize real-time automatic control through sensors, allowing natural and slow transition of internal and external lighting, so that the driver can naturally adapt to internal and external illumination. Intelligent lighting realizes the humanization of tunnel lighting through automatic sensing and automatic regulation. The role of intelligent lighting is more obvious in terms of energy saving and management efficiency. Each lamp has an IP address, which can be used to send commands to a single lamp. Any problem with a lamp can be fed back to the control room at any time. The inspection manpower only needs the original 5, and the maintenance efficiency is greatly improved. Yu Anqi predicted that China will soon set off a boom in the use of intelligent lighting in the field of public lighting, especially in some cities with more mountainous distribution. The application of intelligent lighting in tunnels is huge. It is not difficult to see that the value of digitalization and intelligence in the field of lighting is no less than its impact on the consumer electronics industry. Through multimedia control technology, the contribution of smart lighting due to regulation and control is far higher than the energy-saving value of the lamps themselves. Not only that, intelligent lighting is an important part of smart city construction, and its special significance is extraordinary. Yu Anqi believes that lighting is one of the most important requirements in public demand. Only public lighting needs centralized control, while household appliances such as air conditioners and washing machines consume a lot of power, but it is not necessary to achieve unified start-up and centralized control. In addition, smart lighting has a greater advantage, that is, it can be connected with public service networks such as communication, energy and transportation in smart cities in the future, so that smart cities form a perfect whole. The demand for smart lighting in China is more likely to promote the development of smart lighting. China's burgeoning urbanization provides a unique external advantage for the development of intelligent lighting. Yu Anqi pointed out that the development of intelligent lighting is inseparable from the construction project. This is because each control is different, the needs of each owner are different, and the interface of intelligent lighting into the smart city is different, so there must be case demonstration and case study. The more you get, the better. Urban construction in Europe and the United States is saturated or even stagnant, and China is in the early stage of urbanization. A large number of public buildings require lighting. The experience of the company after a large number of practices will make smart lighting solutions more mature. ,perfect. LED is used for lighting in just a few years, and intelligent lighting is in its infancy. Only by standardizing product standards and compatible interchangeability can the intelligent lighting industry be bigger and stronger, and waste of resources should be avoided. At present, many lighting organizations in China are actively promoting the compatibility and unification of intelligent lighting standards. Yu Anqi said that there are already many control standards in the world, and domestic lighting must be integrated into the international standard system family. He believes that the upper command, interface, and transmission instructions should be unified, but the details can be different. It is necessary to be compatible with international standards and to be innovative. This is a technical difficulty placed in front of standard-setting organizations. The more developed the society, the greater the demand for lighting. Although the lighting unit is not large, its contribution to society and its contribution to energy conservation cannot be underestimated. Yu Anqi appealed that relevant government departments, research institutes and office premises must establish a correct understanding of LED lighting. LEDs are not only replacing traditional light sources, but also should see the combination of control technology and resource saving effects.
According to the national standards of classification and specifications of Bag Filter, the bag filter is divided into five categories. The cleaning method is the main mark of the classification of bag filter.
(1) mechanical vibration class
A cloth bag duster with a mechanical device (including manual, electromagnetic or pneumatic devices) that makes the filter bag vibrate and clear ash, there are two types of cloth bag duster, which are suitable for clearance work and are suitable for continuous working.
(2) split chamber back blowing
It adopts a compartment structure, and uses the valve to switch the air flow by chamber. Under the action of the reverse air flow, the bag filter is forced to shrink or bulge and filter the dust.
(3) back blowing of nozzle
The back blowing air is provided by a high pressure fan or compressor, which is back blowing through the moving nozzle to make the filter bag deformed and jitter and penetrate the filter material.
(4) vibration, reverse blowing and use
Mechanical vibration (including electromagnetic vibration or pneumatic vibration) and back blowing two kinds of dust cleaning methods and bag filter are used.
(5) pulse injection
The compressed air is used as the dust cleaning power, and the compressed air is released in the instant of the pulse injection mechanism to induce several times of the two air high-speed filter bags, so that the filter bag is bulged rapidly, and the cloth bag duster with the impact vibration and the reverse airflow can be cleared.
Bag Filter
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