1.检查外观和标识

1. Check the appearance and identification

在开始校验之前，要检查阀的外观和标识是否清晰可辨，以确保其符合相关规范和标准。这包括检查阀门的型号、压力等级、流量系数以及制造商信息等。如果发现任何损坏或模糊的标识，应及时修复或更换。

Before starting the verification, the appearance and identification of the safety valve should be checked to ensure that it complies with relevant specifications and standards. This includes checking the valve model, pressure rating, flow coefficient, and manufacturer information. If any damaged or blurred markings are found, they should be repaired or replaced in a timely manner.

2.清洁和润滑

2. Cleaning and lubrication

在开始校验之前，应确保阀的内部和外部表面都干净无尘，并且没有堵塞或杂质。另外，需要对移动部件进行润滑，以确保其正常运行。使用适当的润滑剂来润滑密封面和工作部件，以减少摩擦和磨损。

Before starting the calibration, ensure that the internal and external surfaces of the safety valve are clean, dust-free, and free from blockages or impurities. In addition, it is necessary to lubricate the moving parts to ensure their normal operation. Use appropriate lubricants to lubricate the sealing surface and working parts to reduce friction and wear.

3.泄漏检测

3. Leakage detection

泄漏是阀失效的常见原因之一。因此，在校验过程中，需要进行泄漏检测，以确保阀的密封性能。可以使用气体或液体来进行泄漏测试，并根据相应的标准和规范来判定泄漏量是否在接受范围内。如果发现泄漏问题，应及时修理或更换阀。

Leakage is one of the common causes of safety valve failure. Therefore, during the verification process, leakage detection is necessary to ensure the sealing performance of the safety valve. Gas or liquid can be used for leak testing, and the leakage amount can be determined according to the corresponding standards and specifications to determine whether it is within the acceptable range. If leakage problems are found, the safety valve should be repaired or replaced in a timely manner.

4.校验压力和开启压力

4. Verify pressure and opening pressure

校验阀的压力是非常重要的。，需要使用适当的工具，如压力表，来测量阀的校验压力。校验压力通常是阀的设计压力的一定百分比。同时，还需要校验阀的开启压力，在此压力下，阀门应正常开启并释放压力。对于大型阀，可能需要专门的校验设备和设施。

It is very important to verify the pressure of the safety valve. Firstly, it is necessary to use appropriate tools, such as pressure gauges, to measure the calibration pressure of the safety valve. The verification pressure is usually a certain percentage of the design pressure of the safety valve. At the same time, it is necessary to verify the opening pressure of the safety valve. At this pressure, the valve should open normally and release pressure. For large safety valves, specialized calibration equipment and facilities may be required.

5.调整和校正

5. Adjustment and correction

如果校验结果显示阀的开启压力偏离预定值，可能需要进行调整和校正。调整和校正包括改变弹簧的紧缩程度或更换弹簧以改变阀的开启压力。此外，还应确保调整后的阀能够在校验压力下正常工作，并能够完全关闭，以防止过多或过少释放压力。

If the verification result shows that the opening pressure of the safety valve deviates from the predetermined value, adjustments and corrections may be necessary. Adjustment and correction include changing the tightness of the spring or replacing the spring to change the opening pressure of the safety valve. In addition, it should be ensured that the adjusted safety valve can function properly under the calibration pressure and be fully closed to prevent excessive or insufficient pressure release.