The research and development of small high purity gas driven supercharger involves many technological innovations in material structure and technology.
1. Material processing technology
(1) the cylinder block is to improve the machining accuracy and surface finish, and its hardness and wear resistance. High strength base materials are selected, precision casting, precision mirror machining and metal surface treatment technology are adopted, and a special surface carbonitriding heat treatment technology is adopted to make its excellent machining accuracy surface finish, mechanical strength, surface hardness and wear resistance. Comprehensive technical indicators.
(2) for the piston seal assembly, it is mainly to improve its wear resistance processing accuracy, self lubrication and appropriate toughness, especially to ensure that under the appropriate interference fit, it can achieve a good super high pressure strong gas seal. At the same time, because the lubricating oil will pollute the high purity gas, the piston sealing device should have good self lubrication. We have tested hundreds of materials and adopted special processing technology to meet the above technical requirements.
2. Forming and processing technology of special cylinder
There are great technical difficulties in the sealing of ultra-high pressure and strong gas: under the existing material and process conditions in China, in order to achieve a good sealing of the cylinder block and piston, it is necessary to increase the number of seals and the interference to the cylinder block. However, this will bring difficulties to lubrication, reduce the reliability of work, shorten the service life, and increase the heating of equipment, even in serious cases, it will burn relevant parts and equipment. We creatively transformed the cylinder and piston body from a cylinder body to a cone, and made corresponding improvements on the sealing structure, so that the sealing effect of the unit's sealing assembly increased by 200% ~ 500% from line contact to face contact. On the basis of repeated tests, the optimum number of sealing elements is determined scientifically, and the technical requirements of seal lubrication, wear and heat dissipation are well balanced.
3. Replaceable structure of easily worn parts
The body of the cylinder and the piston changes the cone, and the cylinder and the piston head will have contact, collision and extrusion in the process of movement. Due to the reasons of structure and materials, the contact parts of the high-temperature and high-pressure cylinder block will wear quickly under the action of high pressure and friction. For this problem, we should not blindly consider from the material, but change the way of thinking and attack from the component structure. We have noticed that the parts that are easy to wear when the cylinder block contacts the piston head are not in contact with the seal assembly, so the technological requirements are relatively low. This part can be separated from other parts of the cylinder block and processed into replaceable parts separately.
The above is the "what technologies are involved in the development of small high-purity gas driven supercharger" introduced by the gas booster pump manufacturer. For more information, please visit the website: http://www.sdjingtuo.com