Communication on the progress of domestic low-temperature mechanical sealing technology
Thread Content
At present, -196°C low-temperature mechanical seal is a relatively high-end technology, and materials are very important. Low-temperature mechanical seals are divided into low-pressure and high-pressure seals. The appearance is the same, but the internal materials, design, and price are completely different. In particular, -196°C low-temperature dry gas seals are also divided into low pressure and high pressure, left-hand and right-hand. Dry gas seals are particularly expensive. Ordinary low-temperature dry gas seals cost tens of thousands, and high-pressure dry gas seals cost more than 100,000 to more than 200,000. At present, most of the domestic products use imported products, which seriously restricts production efficiency and causes high costs. A lot of money is made abroad. Coupled with domestic national conditions, many people do not have the spirit to take responsibility, and it is difficult to have the opportunity to use high-end mechanical seals made in China. It is often exported to foreign countries first and then to the country. In fact, we also have many excellent production and design manufacturers in our country. Through years of hard work, design capabilities, processing technology, and material control have completely surpassed imported products in many aspects. Time will prove everything and make Chinese manufacturing stronger. Interested friends can leave a message to exchange low-temperature sealing technology so that everyone can make progress together.
This low-temperature mechanical sealing technology can now completely replace imported ones, and the materials are exactly the same. And applied for a patent.
Support domestically produced products and be tolerant. In fact, foreigners may also encounter various problems when using their products.
That’s right, imported low-temperature mechanical seals have no warranty. Many domestic manufacturers provide low prices to foreign equipment manufacturers, and foreign companies provide high prices to domestic customers.
-196 degrees, that is, liquid oxygen pump, used in air separation equipment, using labyrinth nitrogen sealing. May I ask what pump (station) the cryogenic machinery the author mentioned is used on?
Ground pump, flushing pump, unloading pump, process pump. Liquid nitrogen, liquid argon, liquid oxygen.
We basically don't dare to use it, because if there is a problem, the manufacturer will not admit it, and will say that it is a problem with your use. And foreign machine seals basically have quality assurance.
In many domestic factories, cryogenic pump mechanical seals are being produced domestically and are being replaced by foreign-invested enterprises. China and the United States are fighting a trade war, and tariffs on various imported equipment and raw materials have increased significantly. The stuff you import is more expensive. There are certainly many things that can be replaced by domestically produced products that are better and more cost-effective. Low-temperature equipment is not produced by one company now. As a customer, you must choose from many aspects, so as not to be controlled by others. What everyone needs is trust, communication, and communication.
Do you have low temperature resistant bearings and washers? What price
I only do low-temperature mechanical seals here. Manager Gan 18030710506 If you have the opportunity, you can exchange ideas and learn from each other.* one time.