The utility model discloses a worm case drain valve disc anti creep device, which is mainly composed of a valve seat, a valve disc, a guide rod, an adjusting nut and a washer. The guide rod passes through the valve seat lock spindle seat and the valve disc lock spindle seat in turn, the top is inserted into the limit hole on the valve disc, and the bottom is adjusted and fixed by using a nut and a cushion ring, so that the valve disc can only move in a straight line, and the rotation is limited, that is, there is no creep Phenomenon. The utility model not only has all the functions of the previous volute drain valve, but also has the advantages of simple structure, flexible action and stable operation, which can be widely used in the volute drain valve of the non cylindrical volute inlet section. The anti creep device of the valve disc limits the rotation of the valve disc, reduces the possibility of fatigue damage of the valve disc, and prolongs the service life of the volute drain valve. The length of the guide rod in the anti creep device is designed according to the stroke of the servomotor of the drain valve, fully meeting the movement of the valve rod in the whole stroke of the servomotor.
【技术实现步骤摘要】
一种蜗壳排水阀阀盘防蠕动装置
:本技术涉及水轮机领域,尤其涉及蜗壳排水阀阀盘的防蠕动装置领域。
技术介绍
:蜗壳排水阀是用于排出压力钢管和蜗壳内积水的部件,通常设置于蜗壳进口段最低点,当水轮机检修维护时,通过移动式油泵系统操作排水阀接力器,使得接力器活塞杆连同阀杆机构(中阀轴、接长杆等部件)、阀盘一起上移,排水阀开启,压力钢管和蜗壳内积水自阀盘与阀座间的空隙,经蜗壳排水管将积水排至尾水管。对于非圆柱形蜗壳进口段,阀盘两侧的开启力会有微小的不同。在以往蜗壳排水阀的设计中,阀盘与阀座之间未做任何限制,排水阀工作时,阀盘和阀杆机构不仅做直线运动,还会因阀盘两侧承受的开启力的细微不同而来回转动,即产生蠕动现象。长此以往,阀盘和阀杆机构有产生疲劳破坏的可能。
技术实现思路
:本技术在于提供一种能够有效防止蜗壳排水阀的阀盘发生蠕动的装置,其主要特点是限制了阀座与阀盘之间的相对转动,阀盘和阀杆机构仅做直线运动,避免其产生疲劳破坏的可能。本技术的目的是通过以下技术方案实现的:整体为立式结构,阀座(1)通过导向杆( ...
【技术保护点】
1.一种蜗壳排水阀阀盘防蠕动装置,其特征在于:整体为立式结构,阀座(1)通过导向杆(3)、调整螺母(4)、垫圈(5)与阀盘(2)连接在一起,限制阀盘(2)的转动,阀座(1)外缘设有1个带螺纹的锁锭座(7),阀盘(2)上安装1个带有自润滑轴瓦(9)的锁锭座(6),导向杆(3)穿过阀座的锁锭座(7)和阀盘的锁锭座(6),顶部插入阀盘限位孔(8)内,底部使用调整螺母(4)、垫圈(5)进行调整和固定。/n
【技术特征摘要】
1.一种蜗壳排水阀阀盘防蠕动装置,其特征在于:整体为立式结构,阀座(1)通过导向杆(3)、调整螺母(4)、垫圈(5)与阀盘(2)连接在一起,限制阀盘(2)的转动,阀座(1)外缘设有1个带螺纹的锁锭座(7),阀盘(2)上安装1个带有自润滑轴瓦(9)的锁锭座(6),导向杆(3)穿过阀座的锁锭座(7)和阀盘的锁锭座(...
【专利技术属性】
技术研发人员:李宏俊,李国艳,张兴宇,董德焕,王鹏,赵王睿,
申请(专利权)人:哈尔滨电机厂有限责任公司,
类型:新型
国别省市:黑龙;23
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