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保温闸阀

概述:

保温闸阀是在普通闸阀基础上增设保温夹套或保温层的特殊截断类阀门,核心功能是在控制管道介质通断的同时,通过填充保温材料或通入热媒(如蒸汽、热水),维持阀体内部介质温度稳定,防止介质在输送过程中因热量流失凝固、结晶或粘度增大,进而保证管道系统正常运行。其广泛应用于石油、化工、食品、制药等行业中需输送高温、易凝固介质(如原油、沥青、糖浆、熔融盐等)的管道系统。


公称通径:DN15mm~600mm

公称压力:1.6-16MPa

适用介质:酸、碱、滤清类液体

工作温度:最高可达550℃

Products and services that meet fluid control requirements

Each process, each facility, and each environmental constraint has its own special requirements. Therefore, Dongyan offers a comprehensive range of products covering different performance levels, pressures, different functions and different materials.

Detail

使用与维护注意事项

1、保温系统检查:

夹套式:定期检查热媒接口是否泄漏,夹套空腔是否有堵塞(可通过进出口温差判断,温差过大可能堵塞),每半年清理一次夹套内部污垢。

保温层式:定期检查保温层是否破损、受潮,保护壳是否锈蚀,发现问题及时更换保温材料、修补保护壳,避免保温失效。

2、启闭操作规范:

高温工况下启闭阀门前,需先预热阀体(夹套式通入热媒预热 10-30 分钟),避免阀体因温度骤升骤降产生应力开裂。

手动操作时缓慢转动手轮,避免用力过猛导致阀杆变形;电动驱动需检查电机、减速器的耐高温性能,定期润滑传动部件。

3、密封维护:

阀杆填料泄漏时,可适当紧固填料压盖;若紧固无效,需停机更换填料(选用同型号耐高温填料,如柔性石墨)。

闸板与阀座密封面泄漏时,需检查是否有杂质划伤或密封面磨损,轻微磨损可研磨修复,严重磨损需更换闸板或阀座。

4、停用保护:

长期停用时,需排空阀体内部介质(防止低温凝固胀裂阀体),夹套式需排空热媒并通入压缩空气吹干,保温层式需做好防潮防护,避免保温材料吸潮变质。

Product Application Scope

These devices are suitable for accurately controlling media such as gases, liquids, steam, etc., and maintaining process parameters such as pressure, flow rate, temperature, and liquid level at given values. Especially suitable for work environments where the allowable pressure difference is small and the allowable leakage is also small, and the pressure difference is not significant.

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