专家需求情况

(要解决的主要问题、需达到的指标等)

气动轨道球阀,用在催化裂化装置上,使用温度达300度。

1、国产气动轨道球阀在实际工况操作一段时间后,在开启时会发生气缸爬行现象,就是增大气缸直径和气源压力,爬行也无法消除。

2、由于轨道球阀的工作原理是阀杆先直线上升一段后,然后再边上升边旋转90度,使球体先脱开阀座,再旋转90度阀门便由关到开,主要产品和服务:工业泵阀、化工设备,特种金属材料以及环保工程的总承包等四大产业板块。主要产品有通用阀门:闸截止阀、球阀、蝶阀、旋塞阀、隔膜阀、节流阀、调节阀。 石油、石化、硫酸、冶炼、电站、钢厂、煤化工等系统专用阀。金属衬塑阀门及特种金属材料阀门。金属和非金属耐腐蚀泵、流程泵。特种不锈钢管道和钢塑复合管及配件。 金属容器、工程塑料和特种不锈钢衬里塔、釜、罐、槽等各类容器。硫酸化工成套设备,环保工程。问题是阀杆的边上升边旋转运动使填料函里的填料很容易粘附在阀杆上,增大阀杆与填料的摩擦力,就是把阀杆表面光结度提得很高,在实际高温工况操作一段时间,填料也会粘附在阀杆上。

需达到的指标

1、 怎样消除实际工况中气缸的爬行现象;

2、怎样解决填料会粘附在阀杆表面的问题;

对专家人选的要求(专业、语言、经验等)及来华时间、期限 有丰富经验,并能够解决实际问题。

 

Project information Company’s main products and service: Industrial valves and pumps, Chemical Equipment, special metal material and EPC for environmental project etc. four sectors. Main product has general valves, which include gate valve, globe valve, ball valve, butterfly valve, plug valve, diaphragm valve, throttling valve, control valve; system special service valve for oil, petrochemical, sulfur acid, smelt, power station, steel factory, coal chemical industry etc.; metal valve with plastic lined and special steel valve; corrosion resistance pump made from metal and non-metal; special stainless steel pipe and metal-plastic multiple pipe and fitting; metal vessel, engineering plastic and special SS lined tower, kettle, tank and groove etc. vessels; sulfur acid chemical equipment in sets; environmental project.
Nature of activity requested for experts Pneumatic track ball valve, used in catalytic cracking unit, operation temperature is 300 degrees centigrade.

1, Domestic pneumatic track ball valve in the actual working condition of operation after a period of time, when open, air cylinder will appear creeping phenomenon, even if increase the cylinder diameter and air pressure, crawl cannot eliminate.

2, Due to the working principle of track ball valve is the valve stem firstly straight climb, and then rising with rotating 90 degrees, balls leave the seat, then rotate it 90 degree of the valve from closed to open, the problem is that the valve stem the rise while rotation movement to make the packing in the packing box is very easy adhesion on the valve stem, increase the friction force of stem and packing, in other words, the stem surface roughness is very high, in the actual working condition of high temperature operation for a period of time, Packing will be adhesive on the valve stem.

Need to achieve target:

1.how to eliminate the performance indexes of actual working condition of cylinder crawling phenomenon;

1、2.How to solve the problem of packing will adhesion on the surface of the valve stem;Launch the actuator manufacturing techniques.

Valve(butterfly valve)to prevent high temperature thermal expansion locked technology(temperature≥425℃).