Regular inspection and maintenance of balanced pneumatic globe valve
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Release Time：2020-07-21
The balanced pneumatic globe valve is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface to not leak. When the medium enters the valve 6 from below the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the medium pressure. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem should be larger, otherwise, the valve stem will bend. Since the emergence of self-sealing valves, the medium flow direction of balanced pneumatic globe valves has changed from above the valve clack to the valve cavity. At this time, under the action of medium pressure, the force to close the valve is very small, and the force to open the valve is very
Balanced pneumatic stop valveIt is a forced sealing valve, so when the valve is closed, pressure must be applied to the valve flap to force the sealing surface not to leak. When the medium enters the valve 6 from below the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the medium pressure. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem should be larger, otherwise, the valve stem will bend. Since the emergence of self-sealing valves, the medium flow direction of balanced pneumatic globe valves has changed from above the valve clack to the valve cavity. At this time, under the action of medium pressure, the force to close the valve is very small, and the force to open the valve is very large, and the diameter of the valve stem can be reduced accordingly. At the same time, under the action of the medium, this valve is also relatively tight. China's valve "three in one" has stipulated that the flow direction of the balanced pneumatic stop valve should be from top to bottom.
1.Balanced pneumatic stop valveBefore installation, carefully check whether the valve model meets the use requirements;
2. When the valve is installed in any position, the convenience of maintenance and operation should be considered;
3. The sealing performance test of the balanced pneumatic stop valve should be carried out before the valve is opened; before installation, the valve should also be tested for no-load opening and closing more than three times. The valve core should be switched flexibly, and various shaft parts should not be stuck.
4. During the installation process, remove the dirt on the hole, sealing ring and joint surface, and check whether the connecting bolts are tightened evenly;
5. After installation, carry out sealing test and pneumatic operation test;
6. UseBalanced pneumatic stop valveIt should be noted that a small amount of lubricating oil is added to the inner wall of the cylinder regularly (18 months);
7. During the use of the balanced pneumatic stop valve, regular inspection and maintenance should be carried out according to its moving frequency.
Wuhan Xiete Valve Technology Co., Ltd. was established in 1996 with a registered capital of 30 million yuan. It is a professional manufacturing company integrating R & D, production, sales and service. After more than 20 years of development, the company now has four mainframe processing workshops (processing workshop, structural workshop, assembly workshop, repair workshop). The company has 57 machining equipment such as vertical lathes, horizontal lathes, horizontal boring machines, CNC lathes, CNC wire cutting machines, plasma welding machines, etc., and is equipped with high-voltage test stations and corresponding inspection equipment. The company passed the ISO9001:2008 international standard certification in 2005. The quality management level is continuously improved, the quality assurance system is perfect, and the operation performance is good. And in early 2007 obtained the the People's Republic of China special equipment (pressure pipe) manufacturing license. In addition, the company obtainedThrottle orifice plate,Balanced pneumatic stop valveProportional pressure reducing valve, descaling injection valve, minimum liquid level valve, filling valve, anti-breakdown non-leakage gas drain and many other national patents. The company is one of the most equipment-oriented manufacturing enterprises in the same industry in China.
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