Traditional spiral groove type can not meet the sealing requirements of reverse operation of rotating equipment.Aimed at this problem,according to the structural characteristics of the two-way groove type mechanical seal,a two-way connected groove type was proposed.By establishing a thermal-fluid-solid coupling model,the heat transfer boundary conditions were determined,and the geometric model was unidirectionally coupled with ANSYS Workbench to discuss the thermal deformation law of the sealing ring under the action of speed and pressure.The results show that the leakage of the two-way connected groove is smaller than that of the spiral groove,and the two-way connected groove has a two-way sealing structure,which can effectively prevent the leakage of the sealing medium when the equipment rotates in the reverse direction.The maximum thermal deformation of the seal ring is located in the seal dam area,and the groove area has the smallest thermal deformation.The axial thermal deformation of the seal ring decreases step by step from top to bottom,indicating that the main stress area is located in the end faces of dynamic and static sealing rings during the operation of the mechanical seal.With the increase of rotating speed and pressure,the total deformation of dynamic and static sealing rings increases,but the increase of total deformation of static ring is greater than that of dynamic ring.The speed is the main reason that affects the temperature change of the sealing ring.