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The hydraulic and pneumatic sealing industry is a high-tech-intensive industry that plays an important role in energy conservation, environmental protection, safety, consumption reduction, and emission reduction. It is also an industry that promotes “green engineering†and is relatively easy to be effective. At the same time, the hydraulic and pneumatic sealing products are standardized, modular and generalized products, which are very suitable for the needs of green design. In addition, the hydraulic and pneumatic sealing technology combines multi-disciplinary technologies and absorbs new achievements of various disciplines, including new processes and new materials. It is easy to form new technologies and new products with their own characteristics, and it is easy to promote them faster. Therefore, vigorously promoting "green engineering" in the hydraulic and pneumatic sealing industry has great practical significance for promoting technological progress in the industry.
Liquid and airtight products contribute greatly to energy conservation and environmental protection
Liquid-tight products, especially hydraulic products, are caused by working principles and service objects. Their new technologies and new products are closely related to energy conservation and environmental protection. Solving oil leakage and air leakage, reducing the loss of mechanical energy and medium energy conversion is the hydraulic and pneumatic sealing industry. The company's goal of continuous recovery. It can be seen that in the process of vigorously promoting the "green project", it will inevitably promote the technological progress of the liquid-gas-tight industry.
Such as load sensing technology, secondary regulation technology, proportional control technology, variable frequency drive technology, hydraulic transformers and hydraulic and electronic, electrical, mechanical HYBRID technology are worthy of praise for hydraulic energy-saving technology, especially hydraulic technology and computer The combination of electronic and network technologies, combined with fieldbus technology, GPS positioning technology, computer graphics technology, and intelligent sensing technology, can realize the digitization, intelligence, and networking of the host or fleet, and can promote the technical level of various types of hosts. Agricultural machinery represented by combine harvesters and large and medium-sized tractors, construction machinery represented by excavators and loaders, such as load sensing technology can save 20%~30% of the system; using frequency conversion technology and electro-hydraulic ratio The technical plastic machinery can save the system energy by 30%~40%.
While developing hydraulic pressure and high flow rate, hydraulic technology has also developed a product that meets the needs of automatic control, especially fieldbus control, for miniaturization, intelligence, and digitization. Such as low-power hydraulic valves, small displacement high-pressure piston pumps, built-in sensor hydraulic pumps, digital hydraulic valves, digital hydraulic cylinders and digital hydraulic pumps, etc., provide superior performance components for the host system design.
Hydraulic energy-saving technology is not only applied to the mainframe, but also can generate energy-saving effects, such as the “Switching Hydraulic Source†developed by the State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, the Second Ocean Research Institute of the State Oceanic Administration, and Hangzhou University of Electronic Science and Technology. Based on this principle, the deep seawater pressure type energy supply system is to obtain 831 W•h of electric energy in the sea test by using the principle of the switching hydraulic source in the deep sea several kilometers. The project has won 6 national invention patents. The so-called switching hydraulic source is similar to the switching power supply. The high-speed switching valve is used to boost or depress the low power loss, and the output is compatible with the pressure and flow of each actuator. It is an energy-saving hydraulic system based on a new theory. The traditional multi-actuator hydraulic system (throttle control system, load-sensing system and secondary regulation system) can not adapt to the actuator load, or can only adapt to the highest load pressure-coupled actuator, can not achieve low loss boost and drop Pressure, and the switching hydraulic source can decompose the output power of the hydraulic source to each actuator. By increasing the input pressure or flow of the oil source, the actuator pressure and load are automatically adapted to achieve the best energy saving effect.
Looking at pneumatic technology, it is pollution-free and beneficial to the environment. Among them, the application of valve island, pneumatic muscle, proportional servo technology, field bus technology, etc., provides technical support for the extended application and level of process automation.
The torque converter, the torque converter + reducer transmission, the variable speed hydraulic coupler and the liquid-viscous speed control clutch all have energy-saving effects, and are applied to the traveling machine, the high-power fan, the water pump, Power generation equipment also greatly promotes energy saving for the host. In recent years, foreign countries have also developed magnetic couplings with more obvious energy-saving effects.
Reducing noise is an important research direction in the fluid power industry, and research on the mechanism of noise generation is also deepening. By continuously improving the structure of hydraulic components and pneumatic components, and continuously improving the machining accuracy, it effectively reduces noise pollution and personal injury. For example, the hydraulic noise of the stage lifting system of the National Centre for the Performing Arts is only 37dB. The fluid power industry still has a lot of work to do to reduce noise. In the process, more new technologies and new products will be born.
"Green Engineering" brings new opportunities for the development of the industry and vigorously promotes "green engineering", which will inevitably bring new opportunities for the development of the industry. "Green engineering" is a new concept put forward in recent years. Chinese enterprises and foreign companies start to start almost in the same period of time. The gap with foreign countries is not big. Enterprises should seize opportunities and make clear according to the needs of the situation and reality. Enterprise strategic positioning, using modern design and manufacturing technologies, such as network technology, virtual technology, etc., combined with green design, green materials, green technology, green manufacturing of products, research and development of green products needed by the market, which accelerates independent innovation and masters The core technology and the realization of leap-forward development have practical significance.
“Green Engineering†has integrated features as a system engineering, including information integration, process integration, target functional system integration, and social integration. According to the current situation of the hydraulic and pneumatic sealing industry, it is more suitable for the path of system integration innovation in the three aspects of original innovation, integrated innovation and introduction and digestion and innovation. System integration innovation can improve the ability of independent innovation in the hydraulic and pneumatic sealing industry, laying the foundation for original innovation.
The process of vigorously promoting “green engineering†will inevitably produce a series of new technologies, new processes, new materials and new products, which will improve the quality of products, expand the scale of “special, special, refined and new†products, and promote technological progress in the industry. Establishing an independent innovation system plays an invaluable role. Therefore, we need to use the dialectical point of view to deal with the relationship between cost and technological progress, cultivate the market, create our own brand, and accelerate the pace of “green engineeringâ€.
Promoting "green engineering" is not only a technical issue, but also involves the strategic positioning of enterprises, the establishment of cultural concepts, and the innovation of entrepreneurs' thinking. Furthermore, it is necessary to stand at the height of philosophy and understand and grasp the importance of "green engineering." In the past, the vast majority of the development of hydraulic and pneumatic sealing enterprises took the road of imitation, and always followed the others to “get people's wisdom.†With the increasing awareness of global intellectual property protection, it is no longer feasible to take the old road. The road, mastering the core technology, can be invincible in the increasingly fierce competition.
The implementation of "green engineering" must also have corresponding green standards. At present, there are 20 domestic hydraulic pollution standards, including 17 national standards (15 are ISO standards) and 3 industry standards.
There are still six standards being revised, with 4 Chinese standards and 2 standard labels. Of course, the pollution control standard is far from the standard of “green engineeringâ€. Therefore, we should start from the concept of “green engineering†and step up research and develop product standards that are suitable for “green engineeringâ€.
Some people have long been deviated from the role of hydraulic and pneumatic seal products. The hydraulic and pneumatic seals are only used as simple fittings, which are not enough attention, which also limits the development of the hydraulic and pneumatic seal industry to some extent. In fact, hydraulic and pneumatic sealing technology and electronic control technology are the core technologies in the true sense. Its role is like the muscles of the human body. It is the core component of all kinds of main engines. There is no high-level hydraulic and pneumatic sealing technology. Host.
The world's equipment manufacturing powerhouses are strong countries in hydraulic and pneumatic sealing technology, such as the United States, Japan, and Germany. Therefore, China must truly become a strong country in equipment manufacturing, and must become a strong country in hydraulic and pneumatic seal manufacturing. The day when the hydraulic and pneumatic sealing industry is truly revitalized is the moment when China's equipment manufacturing industry truly revitalizes.
Advancing "green engineering" is not based on the subjective will of human beings. Only by recognizing the direction of development can we face difficulties, analyze difficulties, and overcome difficulties. We firmly believe that “Green Engineering†will definitely see results in the hydraulic and pneumatic sealing industry, and promoting “green engineering†will definitely promote the great advancement of industry technology.
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Advance "Green Engineering" to promote the progress of liquid and airtight technology
The current "green engineering" advocates both the connotation and the extension, which embodies the concept of system engineering, including not only green procurement, green design, green production, green manufacturing, green consumption and related technical standards, but more importantly, the implementation of science. The concept of development, enterprises change production methods, adjust product structure, promote technological advancement of enterprises, and promote the overall requirements for the construction of independent innovation systems in the industry.