氩气、氦气回收装置
Argon, helium recovery
氩气、氦气回收装置由真空泵、压缩机、高低贮罐、干燥器、脱氧器、电磁阀、压力控制器、程序控制器，PLC等主要元件组成。本系统自动化控制。
该系统功能首先抽去工件中的氮气轨空气，然后充入氦气，进入工件中检漏。检漏结束后，将工件内的氦气用真空泵抽取至低压贮罐、干燥器。脱氧器并由压缩机将低压贮罐内的氦气压入高压贮罐，待下一循环使用。当循环回收系统氦气量减少时由氦气钢瓶补充新鲜氦气，保证整个工序能稳定长期的工作。
每件工件的工艺流程：抽真空→充氦→保压检漏→抽氦回收干→燥器脱→氧器
二、操作步序
工序1：
插入试验导管。启动真空泵至达到真空度后停泵。信号灯亮。可用手动进入下一个工序。
工序2：
达到真空度后，充入氦气，其压力为1.3~2.6MPa。达到压力后信号灯亮。
工序3：
保持氦气压力进行检漏。
工序4：
检漏结束后手动操作真空泵达到真空度后，信号灯亮，关闭真空泵拔出试验导管。
回收系统中，压缩机是自动进行工作的。当低压贮罐压力高于3000Pa即自动启动压缩机。压为零时即停止工作。压缩机将按照低压贮罐的压力决定启动或停止。
三、技术指标
1．真空泵抽掉空气或氮气后绝对压力为20Pa
2．真空泵抽氦气绝对压力为20~50Pa
3．充氦气压力为1.3~2.6MPA，检漏压力≥0.6MPa
4．每一个循环氦气回收率不小于95%
5．手动及自动并用，在每一个工作状态均有信号灯指示。
6．真空泵抽气力不小于8L
7．采用全无油全封闭式压缩机
8．高低压贮罐容积大小应保证压缩机能正常安全工作并带有压力显示。
9．高低压贮罐容积不小于70L
10 电器元件及控制元件均采用进口件或国产品牌产品
11．连接工件的连接管带PT1/2”，接头连接管长度为5000MM，内径≥10M
Argon, helium recovery
Argon, helium recovery by the major components vacuum pumps, compressors, low tank, dryer, deoxygenation, solenoid valves, pressure controller, program controller, PLC and other components. The automatic control system.
The system first feature in a workpiece removing nitrogen air rail, and then filled with helium, leak into the workpiece. After the leak, the helium gas within the workpiece using a vacuum pump to extract the low-pressure tank, dryer. Deaerator tank by the low-pressure compressor helium pressure within the high pressure into the tank until the next cycle use. When the recycling system to reduce the amount of helium from the helium cylinder supply of fresh helium, the entire process to ensure stable long-term work.
Process each of the workpiece: vacuum packing → → helium leak pumped helium recovery → dry → → dryer off oxygen device
Second, the operation step sequence
Step 1:
Test catheter insertion. After starting the vacuum pump to achieve a degree of vacuum pump stops. Bright lights. Either manually enter the next step.
Step 2:
After reaching a degree of vacuum, filled with helium at a pressure of 1.3 ~ 2.6MPa. Bright lights after reaching the pressure.
Step 3:
Maintaining pressure helium leak.
Step 4:
After completion of the leak manually pump reaches a degree of vacuum, lights on, turn off the vacuum pump catheter pull test.
Recovery system, the compressor is automatically work. When the pressure is higher than the low-pressure tank 3000Pa automatically start the compressor. That stopped when the pressure is zero. The low-pressure compressor in accordance with a pressure tank decided to start or stop.
Third, technical indicators
1. After the vacuum pump deprived of air or nitrogen an absolute pressure of 20Pa
2. Vacuum pump helium absolute pressure of 20 ~ 50Pa
3. Filling helium pressure is 1.3 ~ 2.6MPA, leak pressure ≥0.6MPa
4. Each cycle helium recovery rate of not less than 95%
5. Manual and automatic and used in every job status lights are indicating.
6. Vacuum suction force is not less than 8L
7. It uses no oil hermetic compressors
8. High and low pressure compressor tank volume size should ensure the normal and safe working with pressure display.
9. High volume low pressure tank is not less than 70L
10 electrical components and control components are imported or domestic brand name products
11. Connecting tubes connecting with the work piece PT1 / 2 ", the length of header pipe 5000MM, the inner diameter ≥10M |
