Research on temperature rise characteristics of end V-groove ring seal

Abstract Aiming at the problem of frictional heat generation under high pressure and high speed of the piston ring, the V-groove piston ring is proposed. The finite element analysis method is used to compare and analyze the temperature distribution law of the traditional piston ring and V-groove piston ring. The experimental study on the temperature rise of the piston ring seal is carried out by using the high-pressure and high-speed rotating sealing experimental bench. The experimental results are consistent with the simulation results. The results show that when the rotor speed increases by 1000 rpm, the temperature rise of the traditional piston ring increases by 18.4%, the V-groove piston ring increases by 17.2%. For every 0.5 MPa increase in the pressure applied to the piston ring, the temperature rise of the traditional piston ring increases by 9.2%, the V-groove piston ring increases by 5.8%. The same under the working conditions, the temperature rise of the V-groove piston ring is reduced by 21–29% compared with the traditional piston ring, and the leakage of the V-groove piston ring is reduced by 12–19% compared with the traditional piston ring. The synergistic design of low temperature rises and low leakage of the piston ring.