As a core equipment in the field of industrial fluid control, Huaying Valve's pneumatic butterfly valve has become an excellent product in the chemical, power, municipal engineering and other fields due to its structural innovation and performance breakthroughs. Its design integrates the concepts of lightweight, modularity, and intelligence, while the scientific daily maintenance system further ensures the long-term stable operation of the equipment.

1、 Technical features: Dual guarantee of precise control and efficient operation

Lightweight structure and spatial adaptation

The Huaying pneumatic butterfly valve adopts a clamp type short structure design,DN500The weight of the caliber valve is only that of traditional gate valves1/4Thickness reduction60%It can be easily embedded in space limited scenarios such as ship pipelines and high-rise building computer rooms. The valve body material is coveredQT450Ductile iron316LMultiple options such as stainless steel, compatible-196℃to600℃The operating conditions are continuously running in the Hainan Refining and Chemical Project5There has been no corrosion deformation in the year.

Quick response and precise regulation

Double acting cylinder actuatorDN100Fully open the valve/The full closing time has been shortened to3Seconds, spring reset can be achieved with a single acting cylinder in emergency cut-off scenarios1Cut off the flow of the medium within seconds. Through intelligent locators and4-20mASignal control, the valves in the Xi'an municipal water supply project compress the pressure fluctuation range of the pipeline network to±0.05MPaThe daily water-saving rate has reached8%.

Bidirectional sealing and long-life design

Soft sealed butterfly valve adopts polytetrafluoroethylene（PTFE）Material, connected by a spherical butterfly plate and a dowel free valve stem structure, in5.0MPaUnder pressure, open and close with pressure5Still maintained after ten thousand attemptsANSI Class VILevel zero leakage standard. Hard sealed butterfly valves use metal hard seal stacking technology to withstand600℃High temperature and40MPaHigh voltage, after replacing imported products in the ultra supercritical units of Huaneng Yuhuan Power Plant, has reduced the annual maintenance cost of a single unit200Ten thousand yuan.

2、 Daily maintenance: a scientific solution for full lifecycle management

Appearance and Air Source System Inspection

Daily cleaning of valve surface dust and oil stains is required, with a focus on inspecting valve body rust spots, flange sealing surface damage, and loose connection bolts. The air source system needs to be equipped with an air filter, a pressure reducing valve, and an oil mist device. The accumulated water in the filter should be discharged weekly and the filter element should be replaced to ensure that the air source pressure is stable4-8barWithin the scope, avoid damage to the actuator caused by pressure fluctuations.

Maintenance of actuators and seals

Check the sealing of the cylinder every month, and detect the leakage of the piston sealing ring by applying soapy water. If aging or cracks are found, they should be replaced in a timely manner. Apply lubricating grease to moving parts such as piston rods and shafts every quarter to reduce friction and wear. In the gas drainage system of a coal mine in Inner Mongolia, the valves strictly following this maintenance plan operate continuously3No shutdowns or maintenance have occurred this year.

Deep maintenance of internal components of valves

Disassemble the valve every six months to inspect the sealing surface of the butterfly plate and valve seat. Minor scratches should be repaired with grinding tools, and severe wear should be replaced with sealing components. For clamp type valves, it is necessary to focus on checking the bending degree of the valve stem and the tightness of the packing gland to prevent medium leakage. Rainwater Discharge Project in Nansha Free Trade Zone, Guangzhou3000Through this scheme, more than one valve can realize zero fault operation and effectively resist rainstorm and waterlogging disasters.

Functional testing and parameter calibration

Annual full process functional testing, including manual testing/Pneumatic operation response speed, accuracy of opening indication, and pressure testing of sealing performance. By adjusting the limit switch of the locator, ensure that the valve opening is in error with the control signal≤0.5%SatisfyDCS/PLCAccuracy requirements for automation systems.

3、 The synergistic effect of technology empowerment and maintenance innovation

Huaying Valve Industry reduces the full lifecycle cost of pneumatic butterfly valves through modular design and standardized maintenance processes50%The above. Its products not only pass throughAPI 6DThePED 97/23/ECWaiting for international certification, more globally50Multiple countries and regions have established rapid response service systems to provide industrial fluid control services“Intelligent Manufacturing in China”A reliable solution. In the future, with the deep integration of IoT technology and predictive maintenance, Huaying pneumatic butterfly valves will play a greater role in the construction of smart factories and continue to help the industry upgrade its technology.