球阀在工业阀门中的地位，就像智能手机在通讯设备中的地位——不是非常早发明的，却是应用非常广的。良工阀门集团的球阀产品以“流体阻力小、结构简单、开闭迅速”三大优势，成为石油、化工、天然气等行业管道系统的优选。

The position of ball valves in industrial valves is like that of smartphones in communication devices - not the earliest invention, but the most widely used. Lianggong Valve Group's ball valve products have become the preferred choice for pipeline systems in industries such as petroleum, chemical, and natural gas due to their three major advantages of low fluid resistance, simple structure, and fast opening and closing.

一、球阀的工作原理与结构特点

1、 The working principle and structural characteristics of ball valves

球阀的启闭件是一个带孔的球体，通过阀杆带动球体旋转90°，即可实现从全开到全关的切换。这种“四分之一转”的操作方式，让球阀成为所有阀门中操作非常便捷的品种。

The opening and closing component of a ball valve is a ball with holes, which can be switched from fully open to fully closed by driving the ball to rotate 90 degrees through the valve stem. This "quarter turn" operation method makes ball valves the most convenient type of valve to operate among all valves.

良工球阀的核心优势体现在三个方面：

The core advantages of Lianggong ball valves are reflected in three aspects:

流体阻力小——球阀全开时，球体通道与管道内径基本一致，流体几乎不受阻碍。

Low fluid resistance - When the ball valve is fully opened, the diameter of the ball passage is basically the same as that of the pipeline, and the fluid is almost unobstructed.

密封可靠——球阀的密封面材料广泛使用聚四氟乙烯等塑料，密封性好。

Reliable sealing - The sealing surface material of ball valves widely uses plastics such as polytetrafluoroethylene, which has good sealing performance.

维修方便——球阀结构简单，密封圈一般是活动的，拆卸更换都比较方便。

Easy maintenance - Ball valves have a simple structure, and the sealing ring is generally movable, making disassembly and replacement relatively convenient.

二、良工球阀的主流产品系列

2、 The mainstream product series of Lianggong ball valves

Q41F-16C系列法兰浮动球阀——这是良工球阀的“当家花旦”。浮动球阀的球体在介质压力作用下被压向出口端密封圈，压力越高密封越紧。DN100规格的工作压力为1.6MPa，阀体材质为碳钢。

Q41F-16C series flange floating ball valve - this is the "leading actress" of Lianggong ball valves. The ball of the floating ball valve is pressed towards the sealing ring at the outlet end under the pressure of the medium, and the higher the pressure, the tighter the seal. The working pressure of DN100 specification is 1.6MPa, and the valve body material is carbon steel.

固定式球阀——适用于大口径、高压力的工况，球体由上下阀杆固定，不会因介质压力而位移。

Fixed ball valve - suitable for large-diameter and high-pressure working conditions, the ball is fixed by upper and lower valve stems and will not shift due to medium pressure.

埋地式全焊接球阀——专为城市供热、燃气管道设计，全焊接结构杜绝了泄漏隐患。

Underground fully welded ball valve - specially designed for urban heating and gas pipelines, with a fully welded structure to eliminate leakage hazards.

不锈钢球阀——可控制空气、水、蒸汽、各种腐蚀性介质、泥浆、油品、液态金属和放射性介质等多种流体。

Stainless steel ball valve - can control various fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media.

三、球阀选型的核心技术参数

3、 Core technical parameters for ball valve selection

选型球阀需核心考虑：

The selection of ball valves should focus on:

阀体材质——碳钢适用于常规工况，不锈钢适用于腐蚀性介质。

Valve body material - carbon steel is suitable for conventional working conditions, while stainless steel is suitable for corrosive media.

工作压力——良工球阀压力覆盖1.6~6.4MPa。

Work pressure - Lianggong ball valve pressure covers 1.6~6.4MPa.

连接方式——法兰连接、焊接连接、螺纹连接等。

Connection methods - flange connection, welding connection, threaded connection, etc.

驱动方式——手动、电动、气动、齿轮传动等。

Drive modes - manual, electric, pneumatic, gear transmission, etc.

四、球阀的典型应用场景

4、 Typical application scenarios of ball valves

良工球阀广泛应用于煤矿、石油、化工、冶金、轻工、造纸、电站、制冷、电厂等领域。在热力系统中，全焊接球阀凭借零泄漏的优势成为供热管网的优选。在长输管线中，固定式球阀凭借高可靠性和低维护成本受到青睐。

Lianggong ball valves are widely used in coal mines, petroleum, chemical, metallurgical, light industry, papermaking, power plants, refrigeration, power plants and other fields. In thermal systems, fully welded ball valves have become the preferred choice for heating pipelines due to their zero leakage advantage. Fixed ball valves are favored in long-distance pipelines due to their high reliability and low maintenance costs.

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