What are the features of screw-type argon compressors?

Features of screw-type argon compressors: - Low leakage rate, high sealing performance； - Argon is inert and non-corrosive, but it requires high standards for equipment sealing ； - The temperature rise during compression is low, ensuring stable operation ； - Strict requirements are placed on the compatibility of materials and lubricants. The design differences between screw compressors of this specification (10 Nm³/h, 0.8 MPa) for compressing argon and air are as follows: 1. Structural design: – Argon: Considering the density, properties of argon, as well as the requirements regarding leaks, the sealing design of the entire compressor is enhanced, and special structures are used at the gas connection points to minimize leakage. - Air: A conventional structural design is sufficient. 2. Material selection: – Argon: Materials that can withstand low temperatures, experience minimal wear, and are compatible with argon are typically used, such as stainless steel and aluminum alloys ； - Air: Ordinary alloy steel is generally sufficient to meet the requirements. 3. Sealing design: – Helium: High-performance mechanical seals or specialized static and dynamic sealing mechanisms are used to enhance helium mass spectrometry/vacuum leak detection ； - Air: A standard oil seal or a standard mechanical seal will suffice. 4. Cooling design: – Argon: To minimize the decrease in the purity of the working medium caused by the temperature rise during argon compression, more optimized and efficient cooling methods may be employed to control the outlet temperature ； - Air: Standard water-cooling or air-cooling methods are sufficient. 5. Motor power: – Argon has a relative density about 1.38 times that of air; therefore, under the same volume flow rate of exhaust gas, the motor power required to compress argon is slightly higher than that needed to compress air. Generally, it is necessary to specify a motor power that is 10–30% higher than the actual requirement. In summary, screw-type argon compressors differ from air compressors in terms of sealing design, material selection, cooling optimization, and motor power, requiring specialized design taking into account the properties of argon. .

I’m not sure what kind of argon source you are using; if it is liquid purchased from outside, gasification is the simplest and most suitable method. If argon is to be recovered and reused, a regular low-flow compressor will suffice. Since it is an inert gas, the only difference lies in the density calculation. There are no special requirements for the sealing material; as long as it provides good sealing performance is sufficient, since argon is a noble gas. For reference.

Thank you all for your professional analysis:victory: