制冷系统与水系统中常见的阀件包括以下几种，它们各自有不同的功能和应用场景： Common valves in refrigeration systems and water systems include the following, each with different functions and application scenarios:
制冷系统常见阀件 Common valves in refrigeration systems
1. **毛细管 (Capillary Tube)** 1. **Capillary Tube**
- **功能**: 用于节流和降压，控制制冷剂从高压侧到低压侧的流动。 - **Function**: Used for throttling and pressure reduction, controlling the flow of refrigerant from the high pressure side to the low pressure side.
- **特点**: 结构简单，价格低廉，适用于小型和中等规模的制冷系统。 - **Features**: Simple structure, low price, suitable for small and medium-sized refrigeration systems.
2. **热力膨胀阀 (Thermal Expansion Valve, TEV)** 2. **Thermal Expansion Valve (TEV)**
- **功能**: 通过感温包感应蒸发器出口的过热温度，自动调节制冷剂流量。 - **Function**: The refrigerant flow rate is automatically adjusted by sensing the superheat temperature at the evaporator outlet through the temperature sensing package.
- **特点**: 自动调节，适用于中小型制冷系统，但调节范围相对较窄。 **Features**: Automatic adjustment, suitable for small and medium-sized refrigeration systems, but the adjustment range is relatively narrow.
3. **电子膨胀阀 (Electronic Expansion Valve, EEV)** 3. Electronic Expansion Valve (EEV)
- **功能**: 使用步进电机根据预设程序调节制冷剂流量，实现精确控制。 - **Function**: Uses a stepper motor to adjust the refrigerant flow according to a preset program for precise control.
- **特点**: 调节范围宽，动态响应快，适用于大功率变频空调和复杂运行工况下的系统。 - **Features**: Wide adjustment range, fast dynamic response, suitable for high-power variable frequency air conditioners and systems under complex operating conditions.
4. **止回阀 (Check Valve)** 4. **Check Valve**
- **功能**: 防止制冷剂倒流，确保流动方向单一。 - **Function**: Prevent refrigerant from backflow and ensure single flow direction.
- **特点**: 广泛应用于各种制冷系统中，保证系统的正常运行。 - **Features**: Widely used in various refrigeration systems to ensure the normal operation of the system.
5. **球阀 (Ball Valve)** 5. Ball Valve
- **功能**: 用于切断或开通制冷剂的流动。 - **Function**: Used to cut off or open the flow of refrigerant.
- **特点**: 结构简单，操作方便，适用于各种管道系统。 - **Features**: Simple structure, easy operation, suitable for various piping systems.
水系统常见阀件 Common valves in water systems
1. **截止阀 (Gate Valve)** 1. **Gate Valve**
- **功能**: 用于完全开启或关闭水流，不适合调节流量。 - **Function**: Used to completely open or close the water flow, not suitable for regulating the flow rate.
- **特点**: 结构简单，使用广泛，适用于低压和高压管道系统。 - **Features**: Simple structure, widely used, suitable for low-pressure and high-pressure pipeline systems.
2. **闸阀 (Globe Valve)** 2. Globe Valve
- **功能**: 用于调节水流量，具有良好的调节性能。 - **Function**: Used to regulate water flow, with good regulation performance.
- **特点**: 结构复杂，适用于需要精确控制流量的场合。 - **Features**: Complex structure, suitable for occasions requiring precise flow control.
3. **止回阀 (Check Valve)** 3. Check Valve
- **功能**: 防止水流倒流，确保流动方向单一。 - **Function**: Prevent water from flowing back and ensure a single flow direction.
- **特点**: 广泛应用于各种水系统中，保证系统的正常运行。 - **Features**: Widely used in various water systems to ensure the normal operation of the system.
4. **蝶阀 (Butterfly Valve)** 4. **Butterfly Valve**
- **功能**: 用于快速开启或关闭水流，也可用于调节流量。 - **Function**: Used to quickly open or close the water flow, and can also be used to adjust the flow rate.
- **特点**: 结构简单，操作方便，适用于大口径管道。 - **Features**: Simple structure, easy operation, suitable for large diameter pipes.
5. **球阀 (Ball Valve)** 5. Ball Valve
- **功能**: 用于切断或开通水流，具有良好的密封性。 - **Function**: Used to cut off or open water flow, with good sealing performance.
- **特点**: 结构简单，操作方便，适用于各种管道系统。 - **Features**: Simple structure, easy operation, suitable for various piping systems.
这些阀件在制冷系统和水系统中起到了重要的控制和调节作用，选择合适的阀件可以提高系统的效率和可靠性。 These valves play an important control and regulation role in refrigeration systems and water systems. Choosing appropriate valves can improve the efficiency and reliability of the system.
