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E-mail
shjxj@126.com
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8B, No. 9, Lane 123, Shenmei Road, Pudong New Area, Shanghai
Shanghai Keshi Technology Development Co., Ltd
shjxj@126.com
8B, No. 9, Lane 123, Shenmei Road, Pudong New Area, Shanghai
KS-PMC300 Vacuum Box Hydrogen Leak Detection System
Advantages of vacuum box hydrogen leak detection compared to helium detection:
1. Low equipment cost, as there is no need for recycling, the equipment cost is about 15% lower;
2. The overall leak detection efficiency is high, reducing the recycling process and increasing the overall efficiency by 15-20%;
3. There is no background pollution, hydrogen molecules have good diffusion, strong escape, and low adsorption and viscosity;
4. Will not cause secondary pollution and excessive moisture in the detected gas due to gas recovery and recycling;
Disadvantages of helium testing:
1. The detected non-conforming products cannot find any leakage points;
2. The qualified products detected have been leaked after a period of time;
3. The cyclic use of helium gas leads to contamination of the gas chamber and high moisture content;


Background information on helium gas
Helium, as the known element with the lowest melting and boiling points, has a wide range of applications in military, aerospace, nuclear industry, deep-sea diving, and civilian high-tech fields. It is an important strategic rare gas resource related to national security and the development of high-tech industries.
China's dependence on foreign helium resources is extremely high.Relevant statistics show that China's annual consumption of helium is around 22 million cubic meters, almost entirely dependent on imports.And the international helium market is almost controlled by the United States or companies related to American capitalIt is extremely easy to "choke us" by manipulating the international market. In fact, as early as the 1970s, helium gas was listed as a prohibited material for China by Western countries. In recent years, although helium has been lifted from the embargo list, it is still specifically stated in trade contracts that it cannot be used for military purposes.The trade war between China and the United States is a protracted one, and a helium embargo on China may be imposed tomorrow.
The helium content on Earth is extremely rare.At present, helium extraction from helium rich natural gas and helium extraction from BOG are the two major sources of helium supply. The helium content in the air is only 5 parts per million; When the helium content in natural gas reaches 0.05% to 0.1%, it can be industrially utilized; Extracting helium gas from the tail gas of liquefied natural gas (BOG) results in a lower grade of helium gas.
Based on the particularity of helium, the United States began evaluating helium resources as early as 1917. In 1925, the US Congress established the Federal Helium Project and legislated the Helium Protection Act to ensure the supply of helium for national defense needs. The US Congress passed the Helium Amendment Act in 1960; In 2007, the United States designated helium as a strategic reserve resource, and in 2018, it was listed as one of 35 crisis minerals.
At present, Russia is actively promoting the development of the federal law "Helium Law" and the federal plan "Russia's Helium", limiting the export of helium as an important strategic resource.