Vacuum coating machine hypersonic wind tunnel system transformation

             

To improve the efficiency of vacuum coating machine hypersonic wind tunnel tests to meet the needs of the new situation, the protection of the vacuum system has been modified. After the transformation, the vacuum system operation and maintenance to reduce costs and improve the operating environment, significantly improve the efficiency of wind tunnel tests. This article describes the vacuum protection system reform program, carried out before and after the transformation of the system performance comparison.

Vacuum systems are hypersonic wind tunnel blowing suction important driving force protection system to protect the ability of the vacuum system directly restricts the ability of a hypersonic wind tunnel test. China Aerodynamics Research and Development Center of Φ1 m hypersonic wind tunnel, Φ0.3 m density hypersonic wind tunnel, a hypersonic wind tunnel arc share a vacuum system, this vacuum system operation for nearly 40 years, increasingly unable to meet the growing improve wind tunnel test requirements.

The main vacuum suction device for H-600 system rotary piston vacuum pump, which pumps for oil seal mechanical pump, one unit is aging, inefficient operation and maintenance costs are too high, partly because of the vacuum pump oil burning arc corrosion product reacts undermine the normal operation of the vacuum pump, and serious environmental pollution, restricting the completion of the test tasks. To meet the needs of the growing number of wind tunnel tests, increasing the protection capacity of the vacuum system, to ensure that the operator of the vacuum system has been upgraded necessary.