In recent years, under the encouragement of policies, China's manufacturing industry has made considerable progress in technology upgrades, patent standards, and branding. Manufacturing companies represented by Huawei are changing the embarrassing situation in which Chinese companies can only participate in the low-end international division of labor. On the whole, Chinese counterparts want to surpass the United States and are unrealistic for at least 10 years. Even Huawei is still best at producing Western-based transnational companies to build on its well-established technology platform. Although this situation is changing, it is unlikely to achieve a fundamental breakthrough in the short term. In the more sophisticated industries, such as laser cutting machines, heavy-duty hydraulic presses, nuclear pressure vessels and other special steels and advanced medical equipment, the potential for Chinese enterprises to achieve significant technological leap is still very limited. In the past 10 years, the foreign-funded enterprises have continuously increased their control over the Chinese manufacturing industry. In the industries that China has opened up, the top five companies in each industry are almost controlled by foreign capital; among the 28 major industries in China, foreign capital has majority control over assets in 23 industries. The industrial progress China has achieved is far less than that of foreign investment.
On the other hand, the development path of “reindustrializationâ€, low-carbon economy, next-generation new energy, and smart earth originated in the United States is intended to lock in the high-end manufacturing field and seek to create new competitive advantages. This will not only pose greater pressure on China's high-end equipment industry in the future, but will also cause market space pressure on products that have already formed advantages. Because financial markets have strong industrial support capabilities and powerful global supply chain management capabilities, the United States may take the lead in setting off yet another industrial revolution after the new economic revolution and re-cutting the global industrial landscape, thus reshaping the Chinese economy and Technical advantages.
Under the environment of the global industrial division of labor system, China, as the largest manufacturing country, must clearly estimate the huge gap between China and the United States in the high-end manufacturing sector and enhance the competitiveness of China's high-end manufacturing industry as a long-term mission.
Boiler auxiliary equipment mainly includes water supply equipment, ventilation equipment, fuel supply, slag removal and dust removal equipment, steam and water pipes and accessories, detection instruments and automatic control equipment.
1. Water supply equipment
It is composed of water treatment equipment, water supply tank and feed pump 24. Water treatment equipment is used to remove impurities in water, such as oxygen, calcium and magnesium ions, to avoid scaling and corrosion on the inner wall of steam boiler, and to ensure the quality of boiler water supply. The treated boiler feed water is lifted by the feed water pump and then sent to the upper drum through the economizer.
2. Ventilation
The ventilation equipment includes air supply fan, induced draft fan and chimney. Its function is to provide air for mule fuel combustion and lead out combustion product flue gas from the boiler, so as to ensure the normal combustion, and make the flue gas wash the heating surface at the necessary flow rate of 7a68696466fe78988e69d8331333433626465 to strengthen heat transfer. Finally, the stack with a certain height will exhaust the smoke to the atmosphere to reduce the smoke pollution and improve environmental health.
3. Fuel supply, slag removal and dust removal equipment
This is for conveying fuel to boiler, removing ash and purifying flue gas. Belt conveyor, ash conveyor, ash truck and dust remover, etc. For boilers that need to be pre processed with fuel, fuel preparation such as screening, crushing and coal grinding shall also be included. In addition, the dust remover or flue gas desulfurization and denitrification device installed in the flue at the tail of the boiler is an indispensable auxiliary equipment to reduce the smoke pollution and protect the environment.
4. Check instruments and automatic control equipment
In addition to water level gauge, pressure gauge, safety valve and other instruments installed on the boiler body, in order to supervise, regulate and control the safe and economic normal operation of the boiler equipment, a series of instruments, automatic boiler feed water regulating device, automatic fuel combustion control device, etc. are often installed. Some boiler rooms are also equipped with industrial television and remote control device and even more modern automatic control system, more Scientific supervision. Control boiler operation.
Boiler auxiliary equipment, not every boiler is equipped completely, but with the boiler capacity, type, fuel characteristics and combustion mode as well as water quality characteristics and many other factors to adapt to local conditions, adapt to the times, more practical requirements and objective conditions.
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