Abstract: DYL electro-hydraulically controlled cold wall slide valve is widely used in heavy oil catalytic cracking unit to control the amount of catalyst circulation. It is mainly made up of 3 parts: valve body, manual mechanism and electro-hydraulic actuators. A series of innovative structural designs are applied to the device, including the new internal structure of rail bolt anti-fracture, “intelligent” electrohydraulic actuator, the design and manufacture of large diameter slide valve, single packing gland seal structure, etc. By introducing advanced application technology, and developing and utilizing special slide valve design software, the quality of slide valves has been improved, and prolonged their service lives. The service lives of the components were extended by 3-5 years, the maintenance cycle shortened by 1/4 - 1/3, which guarantee the safety of refining devices. The product is reliable in quality, environment friendly and convenient to operate. The control precision index has reached the domestic leading level.

摘要： DYL 型电液控制冷壁滑阀广泛应用于重油催化裂化装置, 用以控制催化剂循环量, 主要由阀体部分、手 动机构和电液执行机构3 部分组成。装置采用了系列创新性结构设计, 包括防导轨螺栓断裂内部新型结构、电液执行 机构“智能化”、大口径滑阀设计与加工制造、单填料压盖密封结构等。通过引进应用先进工艺技术, 开发利用滑阀专 用设计软件, 提升了滑阀品质, 延长了使用寿命, 零部件寿命延长至3~5 年, 检维修周期缩短1/4~1/3, 保障了炼化 装置安全。产品质量可靠, 安全环保性、易操作性、控制精度等指标达到国内领先水平。

关键词: 电液控制, 冷壁, 滑阀, 研制, 自主创新