350℃热采安全阀采用全金属密封，专门用于高温热采井。安全阀下放至设计深 度后，通过液控管线打压推开安全阀阀板。保持液控管线压力，可维持安全阀处于全 开状态。卸掉液控管线压力，安全阀恢复至关闭状态。自平衡装置可以平衡阀板上下 两端压差，确保安全阀顺利打开。

主要特性

◎ 下井深度达1100米；

◎ 通过液控管线压力进行控制；

◎ 动态密封采用特殊耐高温材料，可长期工作在350℃的高温环境下；

◎ 本体材料采用13Cr不锈钢、高温镍基合金718等材料，可满足350℃下的强度要求。

主要优点

◎ 金属对金属阀板密封可靠，寿命长；

◎ 自平衡装置可保证安全阀顺利开启；

◎ 新型全金属密封柱塞结构，保证高温状态下的密封性。

350℃ THERMAL RECOVERY  SAFETY VALVE

INTRODUCTION

350℃ thermal recovery safety valve is sealed in all metals and is designed for high temperature thermal recovery  wells. The valve plate is pushed away by pressure through the hydraulic control line when the relief valve reaches  the design depth. The full opening of the relief valve can be maintained by maintaining pressure in the fluid  control line. The relief valve returns to the closed state when removing the pressure. The pressure differential  between the ends of the valve plate can be balanced by the self-balancing device, which ensures that the relief  valve opens smoothly.

FEATURES

◎ Can be used for 1100 meters of well deepness; 

◎ Controlled by hydraulic line pressure; 

◎ Metal to metal valve plate seal; 

◎ The smooth opening of the safety valve is ensured by self-balancing device; 

◎ Dynamic sealing with special high temperature-resistant materials, which ensures long time  working in high temperature environment of 350℃ ;

◎ The material of body is 13Cr stainless steel or high temperature nickel-based alloy 718 which can  meet the strength requirements at 350℃ .

Note: Other specification products are available.