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进口波纹管平衡套管式套筒阀哪家品牌好

进口波纹管平衡套管式套筒阀Product Description:

The utility model comprises an upper valve cover, a balance cylinder, a bellows, a valve plug, a sleeve, a valve body, a valve seat, a white steel clip graphite winding pad and a valve rod, which is characterized in that the white steel clip graphite winding pad is used for static sealing between the upper valve cover and the balance cylinder, between the valve body and the balance cylinder, and between the valve body and the valve seat. The valve plug is a sleeve type extended structure, the loose thread non fixed connection and conical positioning between the valve plug and the valve rod, and the valve plug and the bellows The balance cylinder and the outer corrugation of the bellows are connected by welding. The outer corrugation of the bellows fits the inner wall of the balance cylinder, and the sleeve valve plug is in contact with the valve seat. The sleeve is a cylindrical part, and its section is in contact with the sleeve wall of the valve plug. The balance hole with cylindrical through hole is opened on the valve plug. Compared with the existing technology, it has the advantages of simple structure, convenient use, strong applicability, strong sealing, good balance and strong adjustment ability, It can be used in high temperature environment, high and low temperature alternating environment and long-term shutdown environment

进口波纹管平衡套管式套筒阀characteristic:

Due to the existence of unbalanced force in the valve structure, the diameter of unbalanced valves such as top guided single seat valve cannot be made very large. The magnitude of unbalanced force will seriously affect the regulation performance of the valve, and even the output force of the actuator must be increased to meet the requirements. In addition, the valve core will suddenly close under the operation of small opening when closing the flow direction. Therefore, the balanced structure is usually used in the selection of large diameter and high pressure valves, The most commonly used valve with balanced structure is the sleeve type regulating valve. The working principle of the sleeve type regulating valve is that the sleeve of the sleeve type regulating valve is clearance fit with the valve plug, and there are multiple throttling windows on the sleeve. The shape of the window determines the flow characteristics of the regulating valve, and the area size of the window affects the flow coefficient of the regulating valve. The self closing conical structure is used to ensure that the sealing surface of the valve seat is tightly matched with the sealing surface of the valve seat, and the sealing surface of the non closing conical valve seat is formed. There are symmetrically distributed balance holes parallel to the axial direction on the valve plug to connect the chambers of the upper and lower end faces of the valve disc. In this way, most of the forces of the medium in the valve on the axial direction of the valve disc offset each other, and the unbalanced force generated by the medium on the valve stem is very small. To achieve balance, a good seal needs to be formed between the valve plug and the balance cylinder

进口波纹管平衡套管式套筒阀Principle:

The bellows balance sleeve valve comprises an upper valve cover, a balance cylinder, a bellows, a valve plug, a sleeve, a valve body, a valve seat, a white steel clip graphite winding pad and a valve rod. The balance cylinder, the sleeve and the valve seat are located in the valve body and fastened by the upper valve cover. It is characterized in that the white steel clip graphite winding pad is used for static sealing between the upper valve cover and the balance cylinder, and the white steel clip graphite winding pad is used for static sealing between the valve body and the balance cylinder, The static seal between the valve body and the valve seat is made of white steel with graphite winding gasket. The valve plug is a sleeve type lengthened structure with a matching inner bolt hole in the middle. The inner bolt hole is fixedly connected with the loose thread of the valve rod. The valve plug and the valve rod are positioned by conical surface. The valve plug and the inner ripple of the bellows are welded, the balance cylinder and the outer ripple of the bellows are welded, and the outer ripple of the bellows fits the inner wall of the balance cylinder, The conical sealing surface of the sleeve valve plug is in contact with the conical sealing surface of the valve seat. The sleeve is a cylindrical part with a certain shape window. The cross section is in contact with the sleeve wall of the valve plug and sealed. A balance hole with a cylindrical through hole is opened on the valve plug.

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