Black-gray water abrasion resistant regulating valve

Abstract

The invention discloses a black-gray water abrasion resistant regulating valve, which comprises a valve body, a valve cover, a valve rod, an adjusting head, a valve seat and a resonance sleeve. The resonance sleeve is arranged in a larger chamber of the valve body and divides the large chamber to form an annular middle passage; the upper end face of the resonance sleeve is closely attached to thetop of the larger chamber, while the lower end face is closely attached to the upper end face of the valve seat; the resonance sleeve adopts an integral tungsten carbide structure and is of an cylinder shape; the middle of the resonance sleeve is axially provided with a through hole along an outlet flow passage, and one or more water flow passage small holes vertical to the through hole along theperiphery of an inlet flow passage; the water flow passage small holes of the resonance sleeve are communicated with the inlet flow passage and the outlet flow passage respectively; and the valve rodpasses through the resonance sleeve and is fixedly connected with the adjusting head. Through the technical improvement in a few aspects, the black-gray water abrasion resistant regulating valve achieves the aims of preventing coking, vortex, flash evaporation, seizing, resonance and erosion resistance, enhances the using stability, safety and reliability, prolongs the service life and brings economic benefit.

Description

technical field [0001] The invention relates to a valve, in particular to a black and gray water wear-resistant regulating valve which is anti-coking, flashing, stuck and resonant and can be applied to solid particle media. Background technique [0002] Black and gray water control valves are mainly used for flow regulation in gasifiers in the coal chemical industry. Black water and gray water media have high temperature, high pressure, steam, and contain solid particles, which are prone to coking, resonance, flash evaporation, and erosion and other adverse phenomena, the working conditions are very harsh. In the past, the black and gray water control valves are usually replaced by ordinary sleeves, single seat and angle control valves. There are no special black water and gray water control valves, and these types of control valves basically have the following defects: 1. Resonance phenomenon is easy to occur, and the valve stem is easy to be damaged; 2. The valve stem is ...

AI Technical Summary

Problems solved by technology

In the past, the black and gray water control valves are usually replaced by ordinary sleeve, single seat and angle control valves. There are no special black water and gray water control valves, and these types of control valves basically have the following defects: 1. Resonance phenomenon is easy to occur, and the valve stem is easy to be damaged; 2. The valve stem is completely exposed to the medium, and it is easy to coke at high temperature, which can easily cause the valve stem and the regulating head to be stuck, causing the valve to fail to work and stop; 3. It is easy to generate vortex, flash The steam and erosion state will cause erosion of the flow channel, valve stem and regulating head. Long-term use may cause serious consequences and bury a great safety hazard for users.

4. The adjustment performance is unstable, the service life is short and the economic benefit is poor

Therefore, these ordinary control valves cannot meet the long-term normal use of black water and gray water media in the gasifier device.

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