Control ball valve for metering self-balancing type foam fire extinguishing system

Abstract

The invention relates to the technical field of automatic fire extinguishing systems, and discloses a control ball valve for a novel metering self-balancing type foam fire extinguishing system, which mainly comprises a ball valve body and a driving device, a ball body in the ball valve body is respectively connected with a driving motor and a manual knob through an upper valve rod and a lower valve rod, so that automatic and manual control adjustment of the ball valve is realized; a liquid inlet flange and a liquid outlet flange are installed at the two ends of the ball valve body, foam liquid flow channels in the control ball valve are arranged in the flanges at the two ends of the ball valve body, the inlet contraction angle does not exceed 30, the outlet expansion angle does not exceed 20, the foam liquid flow and the pressure loss are reduced, and a throttling hole in a threaded connector at the foam liquid outlet end of the ball valve body is combined. And the flow rate of foam liquid is more uniform. The control ball valve is simple in structure, easy to control, reliable in performance, high in response speed and high in adjusting precision, has great significance in achieving long-time high-precision mixing of foam liquid and fire fighting water, and improves the fire extinguishing efficiency of a foam fire extinguishing system.

Description

technical field [0001] The invention relates to the technical field of automatic fire extinguishing systems, in particular to a control ball valve for metering self-balancing foam fire extinguishing systems. Background technique [0002] As a new type of digital and intelligent automatic fire extinguishing equipment, the metered self-balancing foam fire extinguishing system improves the follow-up of foam liquid and the mixing ratio of the system through the control ball valve; while the existing control ball valve has a simple internal flow channel structure, which only realizes the pipeline medium The opening and closing function of the valve has low control accuracy, and cannot be applied to the high-precision opening control requirements of the metering self-balancing foam fire extinguishing system for the control ball valve. Therefore, according to the technical characteristics of metering self-balancing foam fire extinguishing system, a control ball valve suitable for m...

AI Technical Summary

Problems solved by technology

[0002] As a new type of digital and intelligent automatic fire extinguishing equipment, the metered self-balancing foam fire extinguishing system improves the follow-up of foam liquid and the mixing ratio of the system through the control ball valve; while the existing control ball valve has a simple internal flow channel structure, which only realizes the pipeline medium The opening and closing function of the control ball valve is low, and it cannot be applied to the high-precision opening control requirements of the metering self-balancing foam fire extinguishing system.

Therefore, according to the technical characteristics of metering self-balancing foam fire extinguishing system, a control ball valve suitable for metering self-balancing foam fire extinguishing system is specially designed and developed. As a key component of the system, the control ball valve automatically adjusts the opening of the ball according to the change of fire water flow , to control the flow of foam liquid, quickly and accurately control the mixing ratio of fire-fighting water and foam liquid within a preset reasonable range, which is an important link to realize long-term high-precision mixing of foam liquid and fire-fighting water, effectively solving the problem of The foam fire extinguishing system has problems such as lagging foam liquid supply, insufficient foam liquid follow-up, and the mixing ratio of the foam mixture cannot meet the requirements and cannot be controlled in a timely manner.

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