定制各种规格气动程控阀Customize various specifications of pneumatic pro
本公司定制各种规格气动程控阀
程控阀是一种通过气动、液动等方式驱动的切断阀。该阀与DCS集散控制系统或PLC相连，实现计算机程序的远程控制。广泛应用于甲醇裂解制氢、酒精干燥、氯乙烯浓缩回收、多晶硅尾气回收、制氮、制氧、回收二氧化碳等变压吸附气体分离行业。程控阀是变压吸附装置的关键设备、是保证变压吸附各工序顺利完成和系统可靠运转的重要部件。变压吸附的主要工序有吸附、均压、顺放、逆放、冲洗等步骤，每一步工序的完成均是通过程控阀在一定时间的启闭来实现。因而程控阀需要大量的频繁动作，操作要求和性能均高于一般通用阀门。程控阀必须具备以下要求:
1、密封性能可靠、稳定，阀门使用寿命长、即使频繁动作及长时间使用仍无泄漏。
2、阀瓣具有防止流体冲刷、耐腐蚀的功能。
3、启闭速度快，启闭时间通常小于2秒
4、可靠的填料函密封。
5、具有阀位状态现场指示和远程传送信号。
6、阀门可远程控制。
7、维护方便。
Our company customizes various specifications of pneumatic programmable control valves.
Programmable control valves are cut-off valves driven by pneumatic or hydraulic means. These valves are connected to DCS distributed control systems or PLCs to achieve remote control through computer programs. They are widely used in industries such as methanol cracking for hydrogen production, alcohol drying, vinyl chloride concentration and recovery, multi-crystalline silicon tail gas recovery, nitrogen production, oxygen production, and carbon dioxide recovery through pressure swing adsorption gas separation. Programmable control valves are the key equipment of pressure swing adsorption systems and are important components to ensure the smooth completion of each process and the reliable operation of the system in industries such as pressure swing adsorption gas separation for hydrogen production, alcohol drying, vinyl chloride concentration and recovery, etc. The main processes of pressure swing adsorption include adsorption, pressure equalization, release in the forward direction, release in the reverse direction, and flushing. Each step is achieved through the opening and closing of the programmable control valve within a certain period of time. Therefore, programmable control valves require a large number of frequent actions, and the operation requirements and performance are higher than those of general general-purpose valves. Programmable control valves must meet the following requirements:
1. The sealing performance is reliable and stable, and the valve has a long service life. Even with frequent actions and long-term use, there will be no leakage.
2. The valve disc has the functions of preventing fluid erosion and resisting corrosion.
3. Fast opening and closing speed, with the opening and closing time usually less than 2 seconds.
4. Reliable stuffing box seal.
5. It has on-site indication of valve position status and remote transmission of signals.
6. The valve can be controlled remotely.
7. Easy to maintain.
