A globe valve suitable for high temperature fluid

Abstract

The invention discloses a cut-off valve suitable for high-temperature fluid, which comprises a valve body and a valve core. The valve body is provided with a high-temperature fluid inlet, a high-temperature fluid chamber and a cooling liquid chamber, and the valve core is provided with a piston structure and a first cooling liquid passage. There is a transition structure between the coolant cavity and the high-temperature fluid cavity, and the valve core is movably matched with the transition structure; the piston structure is movably fitted in the coolant cavity, and the coolant cavity is divided into a cooling upper cavity and a cooling lower cavity, and the liquid in the coolant channel The outlet is located in the cooling upper chamber, and the liquid inlet is located below the piston structure; when the spool blocks the high-temperature fluid inlet, the liquid inlet is located below the cooling lower chamber and is blocked by the transition structure, and the high pressure in the cooling lower chamber The cooling liquid can drive the spool to rise to open the shut-off valve; the raised spool can communicate the liquid inlet with the lower cooling chamber to cool the shut-off valve. The synchronism between the on-off of the cut-off valve and the circulation of the coolant can effectively reduce the running energy consumption of the stop valve.

Description

technical field [0001] The present invention relates to globe valves. Background technique [0002] The shut-off valve in the pipeline system of high-temperature fluid, when the operating temperature of the shut-off valve exceeds 450°C, the shut-off valve is prone to creep and breakage. When the highest working temperature exceeds 730°C, even globe valves made of high-temperature materials are no longer suitable. The patent document of application publication number CN 102518869 A discloses a shut-off valve, including a valve body and a valve core, and the valve body is provided with a fluid inlet nozzle and a fluid outlet nozzle, as well as a coolant inlet nozzle and a coolant outlet nozzle ;The high-temperature fluid enters the valve body through the fluid inlet nozzle, and then flows out through the fluid outlet nozzle, and the valve core can close the flow channel of the high-temperature fluid; The liquid outlet nozzle flows out of the shut-off valve; the valve core is...

AI Technical Summary

Problems solved by technology

When the maximum working temperature exceeds 730°C, even globe valves made of high-temperature materials are no longer applicable

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