Interpretation of hydraulic technology development trends

Hydraulic technology is one of the key technologies to realize modern transmission and control, and countries around the world attach great importance to the development of the hydraulic industry.The total sales of hydraulic components in the world are 35 billion U.S. dollars.According to statistics, the sales volume of the hydraulic industry in major countries in the world accounts for 2% to 3.5% of the output value of the machinery industry, while our country only accounts for about 1%. This fully shows that the utilization rate of hydraulic technology in our country is low, and efforts to expand its application areas will have broad prospects for development.   

In the middle of the twentieth century, our country officially started the hydraulic industry. At present, our country's hydraulic technology is in a period of rapid development and improvement.In the early days of development, the products only covered places where high-power machinery was required such as machine tools and forging, but later they were developed and used in construction machinery.Since 1965, some hydraulic components and production technology have been purchased from abroad, and at the same time, the self-design of hydraulic products has been carried out. Since then, the production of hydraulic components in our country has formed its own series from low pressure to high pressure, and it is widely used in various mechanical products at the same time.After that, the technical exchanges of outstanding foreign products were accelerated, and the localization design was carried out in combination with foreign products to ensure that our country's hydraulic technology can actively catch up with the world average and enhance our country's overall industrialization process.Under the premise of the rapid development of industrialization after that, my country has successively built scientific research institutions to promote system construction and promote market optimization and upgrading.Under the promotion of the system, market companies can not only produce hydraulic components such as hydraulic pumps, valves, and motors, but also innovatively design many new hydraulic components, such as logic reversing valves, electro-hydraulic proportional valves, etc. On this basis.Nowadays, in the production of hydraulic components, our country has a complete set of series.The development of hydraulics is developing in the direction of high quality, high performance and high efficiency.

After entering the 21st century, due to the widespread application of computers, the development of hydraulic technology has been greatly promoted. The application of computers to assist in the design of hydraulic systems, computer simulation and optimization, microcomputer control and other tasks have achieved good innovation results.At present, hydraulic technology has made major developments in high pressure, high power, high efficiency, low pollution, and low energy consumption, and has made new development achievements in digital control, proportional control and other technologies.In addition, in terms of computer simulation optimization of hydraulic systems and single-chip computer control, good results are increasingly being shown.China's hydraulic industry now has the characteristics of complete categories, excellent production capacity and high technical level.Nowadays, the national hydraulic industry has been able to provide a complete range of products for agriculture, machine tools, ironmaking, petroleum, chemical industry, railways, ships, construction machinery, agricultural machinery, etc.At present, there are more than 1,000 varieties and more than 1,000 specifications of hydraulic components.In addition, China's hydraulic industry attaches great importance to technical exchanges, cooperation and economic cooperation with foreign companies. In recent years, various components and hydraulic systems cited from foreign countries have played a very important role in improving the technical level of our products.

 Hydraulic and pneumatic technology has unique advantages, such as: hydraulic technology has the advantages of large power-to-weight ratio, small size, high frequency response, good pressure and flow controllability, flexible transmission of power, and easy linear motion; pneumatic transmission has the advantages of energy saving, pollution-free, low cost, safe and reliable, simple structure, etc., and easy to combine with microelectronics and electrical technology to form an automatic control system.Therefore, hydraulic and pneumatic technology is widely used in various sectors of the national economy.

Due to the wide application of high-tech achievements in hydraulic technology, such as automatic control technology, computer technology, microelectronics technology, reliability, new processes and new materials, etc., traditional technology has undergone new developments, and the quality and level of products have been improved to a certain extent.Nevertheless, it is impossible for hydraulic technology to make amazing technological breakthroughs in the 21st century. It should mainly rely on the improvement and expansion of existing technologies to continuously expand its application areas to meet future requirements.Its main development trends will focus on the following aspects. Reduce losses and make full use of energy hydraulic technology. In the process of converting mechanical energy into pressure energy and reverse conversion, there is always energy loss.

In order to reduce the loss of energy, the following problems must be solved：

Reduce the internal pressure loss of components and systems to reduce power loss; reduce or eliminate the throttling loss of the system to minimize non-safe overflow; adopt hydrostatic technology and new sealing materials to reduce friction losses; improve the performance of the hydraulic system, adopt a load sensing system, a secondary adjustment system, and an accumulator circuit. Leakage control, leakage control includes two aspects: preventing liquid leakage to the outside and causing environmental pollution and external environmental damage to the system.In the future, leak-free components and systems will be developed, such as the development of integrated and composite components and systems, the realization of pipe-free connections, the development of new types of sealed and leak-free pipe joints, motor oil pump combination devices, etc.No leakage will be one of the important directions of the future efforts of the world hydraulic industry.

The above is the relevant content organized by Xiaobian of the hydraulic exhibition for everyone. If you are more interested in this aspect, you can visit and exchange at the Asia International Power Transmission and Control Technology Exhibition (PTC ASIA).The exhibition will be grandly opened at the Shanghai New International Expo Center from November 25-28, 2022. The exhibition covers eleven theme exhibition areas of hydraulic, pneumatic, sealing, gears, motors, chain drives, belt drives, springs, bearings, transmission couplings and industrial subcontracting. In recent years, it has attracted exhibitors and visitors from Germany, Italy, Russia, Turkey, the United States, Canada, Brazil, Japan, South Korea, Indonesia, Malaysia, Singapore and other countries and regions, which have greatly promoted the international exchange of power transmission and control technology markets and the development of the trade market. You are cordially invited to visit. Interpret more new trends in industry development for you.