Centering guide system for cold assembly of valve seat

阀座冷装配用找中导向系统

Abstract

阀座冷装配用找中导向系统,它涉及一种导向系统,以解决现有阀座冷装配过程中,没有一种找中导向系统,导致在装配过程中,阀座与阀体产生磕碰,极易造成阀座损坏的问题,它包括阀座托架、内部找中工装、外部找中工装和导向杆;阀座托架包括底盘、顶板、四个支撑钉和四套连接组件;底盘和顶板平行布置且二者的轴向均水平设置,四套连接组件沿底盘的周向均布设置;内部找中工装包括主板、支板、套筒、螺销和三个第一旋拧件,外部找中工装包括底板、法兰、两个第二旋拧件、两个定位板、两个连接板和两个支座。本发明用于汽轮机高压主汽阀阀座冷装配。
The invention provides a centering guide system for cold assembly of a valve seat, and relates to a guide system, which aims at solving the problem of easiness in damage of the valve seat caused by the collision of the valve seat and the valve body in the assembly process because the centering guide system is not provided in the existing valve seat cold assembly process. The centering guide system comprises a valve seat bracket, an inner centering tooling, an outer centering tooling and a guide rod, wherein the valve seat bracket comprises a bottom disc, a top plate, four support nails and four connecting assemblies, the bottom disc and the top plate are parallelly arranged, the axial directions of the bottom disc and the top plate are horizontally arranged, the four connecting assemblies are uniformly distributed along the circumference of the bottom disc, the inner centering tooling comprises a main plate, a support plate, a sleeve cylinder, a screw pin and three first screwing parts, and the outer centering tooling comprises a bottom plate, a flange, two second screwing parts, two positioning plates, two connecting plates and two support seats. The centering guide system is used for the cold assembly of the valve seat of a high pressure main steam valve of a steam turbine.

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