A forged steel globe valve with high cushioning

Abstract

The invention discloses a forged steel globe valve with high cushioning, belonging to the field of globe valves. A forged steel globe valve with high cushioning comprises a valve body, and the gas in the semi-inflatable airbag is all concentrated in the semi-inflatable airbag. In the process of separating the space expansion blocks from each other, a buffer cavity is formed between the upper end of the connecting rod and the inner top of the hydraulic cavity, and the interior of the buffer cavity will continue to pour in. High-pressure water flow, when the circulating water flow hits the valve core upwards, the water flow inside the buffer cavity will buffer the contraction of the connecting rod. In the process of rotation, the water pressure buffer arc will indirectly block the water flow, thereby buffering the flow speed of the water. Buffered by high-pressure circulating water.

Description

technical field [0001] The invention relates to the field of globe valves, and more particularly, to a forged steel globe valve with high buffering properties. Background technique [0002] The globe valve, also known as the cut-off valve, is one of the most widely used valves. The reason why it is popular is that the friction between the sealing surfaces during the opening and closing process is small, it is more durable, the opening height is not large, and it is easy to manufacture. , easy maintenance, not only suitable for medium and low pressure, but also suitable for high pressure, the closing principle of the globe valve is that relying on the pressure of the valve stem, the sealing surface of the valve disc and the sealing surface of the valve seat are tightly fitted to prevent the medium from flowing. my country's valve "Three Chemicals" once stipulated that the flow direction of the globe valve should be from top to bottom, so there is directionality during install...

AI Technical Summary

Problems solved by technology

my country's valve "three to" has stipulated that the flow direction of the globe valve should be from top to bottom, so there is directionality during installation. The structural length of the globe valve is larger than that of the gate valve. At the same time, the fluid resistance is large. During long-term operation, the sealing reliability is not good. powerful

[0003] The valve is an important tool used to control the flow rate of fluid delivery. The valve is usually installed in the fluid delivery pipeline. When the fluid pressure is high, a strong impact force will be generated during the flow in the delivery pipeline. When the valve core is opened, The impact force of the water flow will continuously impact the valve core. In traditional globe valves, the valve core and the stem are generally fixedly connected. The lateral impact force on the valve core will be transmitted to the valve stem. During long-term use, its The valve stem is prone to deformation

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