摘要
提出了一种新型快开截止阀门,该阀门适用于煤矿井下安全舱生命保障气路控制场合[1],通过正弦机构将手柄旋转±90°转化成阀芯往复直线运动,控制阀芯O形圈与阀体端面间分离、接触实现阀门开关功能,由于采用密封界面间无相对滑动设计避免了磨损,解决了填料球阀产生磨损颗粒物不可控的问题[2],保证了流路的高清洁度,传动机构具有增力作用,减少了手柄开启力矩。手柄锁定机构的独特设计具有高可靠性。利用有限元计算了O形圈接触力与压缩量关系,为计算旋转扭矩提供了边界条件。仿真了阀门流路的速度场和压力场,得出阀门的通径与流阻系数。该阀门与现有填料球阀相比具有洁净度高,密封可靠,手柄开启力矩小等优点,为安全舱气路控制阀门设计提供了一种新的技术途径。
This paper give a new type of quick-opening globe valve for life support pneumatic control system of the safety cabin at underground coal mine. The valve adopts the sine mechanism to transmit the rotating of the handle in the range of 90° to the reciprocating motion of the spool. The mechanism implements the quick-opening function of the valve through controlling the contact and separation between the O-ring and the end face of the valve. Since there is no relative sliding between the sealing interfaces, the valve solute uncontrollable disadvantage wear particles which produced by package ball valve, to ensure high cleanliness in flow path. Traditional transmission mechanism has a reinforcement effect , and reduce handle open torque. By the finite element method, the relationship between the contact force and the compression of O-ring is analyzed to provide the boundary condition for the calculation of the rotational torque. Meanwhile the velocity field and pressure field along the flow path are simulated. The caliber size of the valve and the flow resistance coefficient are obtained. There are higher cleanliness, more reliable sealing smaller handle open torque advantage compared with existing packing ball valve. The above work presents a new technical approach for the design of pneumatic control valve of the safety cabin.
出处
《液压与气动》
北大核心
2016年第9期76-81,共6页
Chinese Hydraulics & Pneumatics
关键词
截止阀
高洁净度阀门
正弦传动机构
端面密封
锁定机构
globe valve, high cleanliness valve, sine mechanism, end face dynamic seal, self-lock mechanism
