Supercritical forging electric sluice valve with double sluice plates

Abstract

The invention provides a supercritical forging electric sluice valve with double sluice plates. The supercritical forging electric sluice valve comprises a valve body, a sealing base, a sluice plate bottom cover, a left sluice plate, a center shaft, a right sluice plate, a sluice plate upper cover, a valve rod, an enhanced flexible graphite combination sealing ring, a sealing ring, an adjusting ring, a first bolt and nut, a support, a thrust ball bearing, a valve rod nut, a second bolt and nut and an electric device. The valve body is provided with an input and output opening which is locatedon one axis. The center axis perpendicular to the axis is provided with a valve base groove formed in the lower portion of a runner of the valve body. The lower end of the left sluice plate and the lower end of the right sluice plate are embedded into the valve base groove. The left sluice plate and the right sluice plate are fixed to the center shaft on the two sides of the center shaft. The upper end of the valve rod is matched with the valve rod nut in a threaded manner and supported on the thrust ball bearing on the support. The support is perpendicular to a valve rod and is erected on thevalve body. The electric device outputs rotation of the thread to drive the valve rod nut. A valve cover is arranged, and a filter pad, combined filler, a filler pressing ring and a filer gland wrapthe valve rod in the valve cover.

Description

Technical field: [0001] The invention relates to a double-gate valve, in particular to a supercritical forged double-gate electric gate valve suitable for the fields of petroleum, chemical industry and power generation. Background technique: [0002] With the rapid development of our country's national economy, it is widely used in the steam pipeline control system in the fields of power station, metallurgy, chemical industry, oil field and so on. However, in a supercritical steam pipeline (temperature 390°C, pressure 26MPa), the water particles in the steam, driven by the high-speed steam, will bring huge impact damage to the valve. Especially at the moment when the valve is opened and closed, the flow rate increases instantaneously, causing a great impact of water on the sealing surface, and the erosion is very serious. The surface is severely damaged by washing, the service life is short, and when the pressure and temperature are too high, it is easy to cause the valve t...

AI Technical Summary

Problems solved by technology

However, in a supercritical steam pipeline (temperature 390°C, pressure 26MPa), the water particles in the steam will bring huge impact damage to the valve driven by the high-speed steam

Especially at the moment when the valve is opened and closed, the flow rate increases instantaneously, causing a great impact of water on the sealing surface, and the erosion is very serious. The surface is severely damaged by washing, the service life is short, and when the pressure and temperature are too high, it is easy to cause the valve to leak

Deficiencies of existing products: traditional power station valves are prone to leakage, and the sealing surface is not resistant to wear and corrosion

short service life

Inconvenient operation and high maintenance cost

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