What is an electric globe valve

by:Lianke Valve     2022-07-31
This time, I will introduce some functions of the electric globe valve and the precautions when using it. Electric globe valve and flange gate valve are the same type of valve, consisting of electric actuator or air actuator and stop valve. The difference is that the closing is the valve body, and the valve body is the center line of the valve body, which is a kind of opening and closing valve. The gate valve is mainly used to cut off, distribute and change the flow direction of the medium on the pipeline. Two-piece ball valve and three-piece ball valve are new valves that have been widely used in recent years. Structural features: For the globe valve, it can not only be installed and maintained, but also operated. Opening and closing the globe valve can stabilize the force and prevent shock. Each component of the high-pressure shut-off valve of a certain shock switch considers that the shock force is not equal to that of a general shut-off valve. When the pipeline is used for the first time, there is a lot of dirt inside, the cut valve is slightly opened, and the high-speed flow of the medium is used to make it flow, and it is gently closed (quickly closed, suddenly closed to prevent the remaining impurities from being caught on the sealing surface), and then open again, Repeated cleaning of the dirt, put back into normal work. Cut the valve often. There may be stains on the sealing surface. When it is closed, it is also cleaned by the above method, and then it is officially closed. If the electric actuator is damaged, it must be repaired immediately, and the hand of the actuator cannot be used to avoid damage to the four sides of the actuator. Some media cool down after the valve is cut off, causing the valve to contract, and the operator closes it again at an appropriate time to avoid leaving a gap on the sealing surface. Otherwise, the medium will flow at high speed from the gap of the slit, which will easily corrode the sealing surface. When operating, if you find that the operation is too difficult, you should analyze the reason. If the package is too tight, it can be loosened appropriately. If the valve is crooked, contact a repair person. When a certain blocking valve is in a blocked state, the blocking member thermally expands, making it difficult to open. Please open it at this time. Make a half turn around the valve cover screw, remove the stress on the valve, and move the plate to the handwheel. Advantages of electric globe valve: 1. Simple structure, convenient to manufacture and maintain. 2. The working stroke is small and the opening and closing time is short. 3. Good sealing performance, small friction between sealing surfaces and long service life. 4. The structural forms of the globe valve body are straight-through type, direct-current type and right-angle type. The straight-through type is the most common structure, but it has the greatest resistance to the fluid. The direct-flow fluid resistance is small, and it is mostly used for fluids containing solid particles or high viscosity. The right-angle valve body is mostly forged, which is suitable for the globe valve with smaller passage and higher pressure. 5. During the opening and closing process, the friction force of the sealing surface is smaller than that of the gate valve, and it is wear-resistant. 6. Usually there is only one sealing surface, the manufacturing process is good, and it is easy to maintain. 7. The electric actuator is easy to operate. Working principle: Electric globe valve, also known as electric globe valve, is the most widely used valve. Unlike electric ball valve, it is popular that the friction force of the sealing surface during the opening and closing process is small, the relative durability is high, and the opening and closing is simple. , easy to repair, not only suitable for medium and low pressure, but also for high pressure. The occlusion principle of the electric globe valve is to use the electric thrust to rotate the valve rod, so that the sealing surface of the valve seat and the sealing surface of the valve seat are closely fitted to prevent the circulation of the medium. The medium of the electric globe valve only flows in one direction, and it is directional during installation. The structural length of the globe valve is larger than that of the gate valve, the fluid resistance is large, and the reliability of the seal is not strong during long-term operation. Note: 1. Pay attention to the flow direction of the medium when installing the valve, and install it strictly in the direction indicated by the flow direction arrow of the valve. 2. The valve can be installed in any position of the pipeline, and the valve of carbon steel or alloy steel can be selected according to the medium and the temperature of the medium. 3. The electric globe valve should be installed vertically as far as possible, with the valve stem upward. A brief introduction to the application of electric globe valve, whether you have any understanding of it, if you have any questions, you can consult Lianke Valve Co.,Ltd., contact: +86-577-8585 9626. .
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