Most of the industrial chain enterprises in my country's hydraulic industry are concentrated in East China, with Shandong, Jiangsu, and Zhejiang as the main agglomerations, and Guangdong as a representative province in South China, which also gathers a large number of intra-industry enterprises; followed by Henan, Henan, Provinces such as Hebei and Hubei have also gathered more industrial enterprises. Most of my country's hydraulic industry-related enterprises are concentrated in the eastern part of China. The hydraulic upstream industry is mostly distributed in resource-rich areas such as North China and Northeast China, and the hydraulic component manufacturing enterprises are mostly located in East China, where the manufacturing industry is relatively developed and the demand for hydraulic components is large; the downstream application fields of the hydraulic industry are numerous, and most of them are located in central China. , South China and Southwest China. At present, the number of hydraulic industrial parks above designated size in my country is relatively small, with a total of 13 industrial parks, mainly distributed in Guangdong, Henan, Shandong and other provinces. image.png

The "14th Five-Year Plan" proposes to first improve the level of the industrial chain and supply chain, forge the long plate of the industrial chain and supply chain, and build an emerging industrial chain based on my country's industrial scale advantages, supporting advantages and first-mover advantages in some fields. High-end, intelligent and green industries. Under this trend, the investment in China's hydraulic component manufacturing industry is also mainly concentrated in the construction of intelligent and high-end production lines. Since 2018, leading enterprises in the hydraulic industry have invested in the construction of intelligent production lines to realize machine networking and improve productivity.

There are usually warning signs before a hydraulic system fails. Such as pressure imbalance, excessive noise, excessive vibration, excessive temperature rise, excessive leakage and so on. If these phenomena can be found in time and properly controlled or eliminated, system failures can be reduced or avoided. 1. The working pressure of the hydraulic system is out of balance Pressure imbalance is often manifested as unstable pressure, inability to adjust pressure up or down, lag in pressure conversion, and high unloading pressure. The main reasons for stress imbalance are as follows: 1. Pressure imbalance caused by hydraulic pump 1) The axial and radial clearances of the hydraulic pump increase due to wear;

With the rapid development of the Internet, it is closely related to all aspects of the hydraulic buffer device industry and the whole process of the production cycle. The level and scope of the interaction between the market and users have been greatly expanded, showing a new mode of Internet integration and new The working state is rebuilding the industrial organization and manufacturing mode, and reshaping the relationship between hydraulic buffer enterprises and users.

On April 28, 2022, the 40th anniversary commemorative event of Zhejiang University's fluid transmission and control discipline and the 58th anniversary symposium of Academician Lu Yongxiang's teaching were held in conference rooms 212 and 211 of Shaoke Building, Yuquan Campus. The meeting summed up the development achievements of fluid transmission and control over the past 40 years, talked about the outstanding contributions of Academician Lu Yongxiang, who cared about his country and country, pioneered and innovative, and the spirit of seeking truth from facts, rigorous and down-to-earth scholarship, inspiring teachers and students to forge ahead bravely and open up new opportunities.

​Everyone in the industry knows that piston accumulators are isolated hydraulic energy storage devices. It can be used to stabilize the pressure to eliminate the pulsating impact of the pressure in the oil circuit system. The piston accumulator can also be used as a storage and replenishment device for hydraulic energy. The accumulator is used to release the working oil in a short time to supplement the insufficient oil supply of the pump. So how to choose a piston accumulator? I will explain it in more detail below.