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实用新型
CN201190825Y 气体灭火系统压力显示装置的针阀密封结构 失效 - 权利终止

气体灭火系统压力显示装置的针阀密封结构
摘要：
本实用新型涉及一种压力显示装置，具体地说是一种气体灭火系统压力显示装置的针阀密封结构。气体灭火系统压力显示装置是由压力表和针阀组成，针阀是由是由阀体、花形密封垫、销钉、阀芯、复位弹簧和弹簧座组成，阀体一端是外螺纹，用于同容器阀的连接，阀体另一端连接压力显示装置，弹簧座安装在阀体内，复位弹簧安装在弹簧座上，复位弹簧顶住阀芯，阀芯上有一锥面，阀体内相应位置有一锥面，在阀芯的锥面上设置有密封材料，两个锥面配合。本实用新型结构简单，安装方便，在保证密封性能的前提下可以有效保护压力表不被损坏。
摘要（英）：

The utility model relates to a pressure display device, in particular to a needle valve seal structure for the pressure display device of a gas fire extinguishing system, wherein the gas fire extinguishing system pressure display device is composed of a pressure meter and a needle valve, the needle valve is composed of a valve body, a flower-shape seal gasket, a valve pin, a return spring and a spring base, one end of the valve body is provided with an external screw for connecting a container valve, the another end of the valve body is connected with the pressure display device, the spring base is arranged in the valve body, the return spring is arranged on the spring base and abut against the valve pin, the valve pin is provided with a conical surface, the valve body is provided with a corresponding conical surface, the conical surface of the valve pin is provided with seal material, and the two conical surfaces are fit with each other. The pressure display device has simple structure and simple installment and can effectively protect the pressure meter with confirmed seal performance.

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