Z61Y高压电站闸阀

Z61Y高压电站闸阀型号含义解析

型号“Z61Y”遵循中国阀门型号编制标准（JB/T 308），其含义如下：

· Z： 代表闸阀（Zha Fa）。

· 6： 代表连接形式为焊接连接（Han Jie）。这通常包括对焊连接。

· 1： 代表结构形式为明杆模式闸板（Ming Gan Zhi Ban Shi），通常指刚性单闸板。

· Y： 代表密封面材料为硬质合金（Ying Zhi He Jin），如司太立（Stellite）合金。

因此，Z61Y 明确表示一种对焊连接、明杆模式、硬质合金密封的闸阀。其名称中的“高压电站”指明了其专用于电站的高压、高温工况。

Z61Y高压电站闸阀是专为火力发电站、核电站等电力行业的高压、高温蒸汽和水介质管道系统设计的高性能切断阀。它采用对焊连接以确保连接处的密封性和高强度，并配备硬质合金密封副以承受介质的严重冲刷和高温。其明杆设计便于观察阀门状态，是电站锅炉给水、主蒸汽、再热蒸汽等关键管路上不可或缺的关键设备，对电站的安全运行至关重要。

Z61Y高压电站闸阀主要特点

1. Z61Y高压电站闸阀极高的承压与耐温能力： 阀体采用很好的高温合金钢（如WC6、WC9）锻造而成，能承受高达26MPa甚至更高的压力及550℃以上的高温。

2. Z61Y高压电站闸阀抗冲刷与耐磨性： 闸板和阀座密封面采用钴基硬质合金（司太立Stellite）大面积堆焊，形成超硬的金属密封副，极大地提高了在高速蒸汽流下的抗冲刷和耐磨性能，使用寿命长。

3. Z61Y高压电站闸阀对焊连接： 提供与管道一体化的连接，强度高，密封稳定，彻底消除了法兰连接可能存在的泄漏点，适用于高压、热应力交变工况。

4. 压力自紧式阀盖： 这是高压电站闸阀的典型特征。内部压力越高，阀盖与阀体间的密封力越大，密封效果越好，安全性极高。

5. Z61Y高压电站闸阀伞齿轮传动装置： 由于高压下操作力矩巨大，通常配备伞齿轮箱，利用齿轮传动省力的原理，使阀门启闭轻松省力，并可实现远距离操作。

6. Z61Y高压电站闸阀严格的制造与检验： 遵循严格的行业标准（如API、ASME、GB），经过无损探伤、高温高压测试等一系列严格检验，确保万无一失。

Z61Y高压电站闸阀典型应用

· 主蒸汽系统： 锅炉出口主蒸汽管道的切断。

· 给水系统： 高压给水管路的切断。

· 再热蒸汽系统： 冷段和热段再热蒸汽管道的切断。

· 其他要求稳定性的高温高压工况。

Product Overview of Z61Y High-Pressure Power Station Gate Valve

I. Model Designation Interpretation

The model"Z61Y" complies with the Chinese valve model designation standard (JB/T 308), with the following meaning:

· Z: Stands for Gate Valve.

· 6: Indicates the connection type as Weld End (typically butt weld).

· 1: Denotes the structure type as Outside Screw Yoke (OS&Y), usually with a solid wedge.

· Y: Signifies the sealing surface material is Hardalloy (e.g., Stellite).

Therefore, Z61Y explicitly refers to a Butt Weld End, OS&Y, Hard-Seal Gate Valve. The term "High-Pressure Power Station" specifies its dedicated application in high-pressure high-temperature services within power stations.

Product Introduction

The Z61Y High-Pressure Power Station Gate Valve is a high-performance shut-off valve specifically designed for high-pressure high-temperature steam water service in power generation industries,including thermal nuclear power plants. It features butt weld ends to ensure absolute sealing integrity high strength at the connection point, is equipped with hard-alloy sealing pairs to withstand severe erosion high temperatures the media. Its OS&Y design allows for clear visual indication of valve position. It is an indispensable critical component on key pipelines such as boiler feedwater, main steam, reheat steam systems, vital to the safe operation of a power plant.

Main Features

1. Extreme Pressure Temperature Capability: The body is forged high-quality high-temperature alloy steel (e.g., WC6, WC9), capable of withstanding pressures up to 26MPa higher temperatures exceeding 550°C.

2. Excellent Erosion Wear Resistance: The gate seat sealing surfaces are extensively hard-faced with cobalt-based hard alloy (Stellite), forming an ultra-hard metal sealing pair that significantly enhances resistance to erosion high-velocity steam wear, ensuring a long service life.

3. Butt Weld Ends: Provide a permanent, integral connection with the pipeline, offering high strength absolute leak-tightness. This eliminates potential leak paths associated with flanged connections, making it ideal for high-pressure thermal cycling services.

4. Pressure-Seal Bonnet: A typical feature of high-pressure power station valves. The sealing force between the bonnet body increases with internal pressure, resulting in superior sealing performance high safety.

5. Bevel Gear Operation: Due to the high operating torque under pressure, these valves are typically fitted with a bevel gear operator. The gear mechanism provides mechanical advantage, allowing for easier opening closing, enables remote operation.

6. Stringent Manufacturing Testing: Manufactured in compliance with strict industry standards (e.g., API, ASME, GB) subjected to a series of rigorous tests including NDE (Non-Destructive Examination) high-pressure high-temperature tests to ensure absolute reliability.

Typical Applications

· Main Steam Systems: Isolation on main steam lines boiler outlets.

· Feedwater Systems: Isolation on high-pressure feedwater lines.

· Reheat Steam Systems: Isolation on cold hot reheat steam pipelines.

· Other high-temperature, high-pressure services requiring absolute reliability.

Z61Y高压电站闸阀核心术语中英对照：

· Z61Y高压电站闸阀：Z61Y High-Pressure Power Station Gate Valve

· 对焊连接：Butt Weld End (BWE)

· 硬质合金密封：Hard-Alloy Seal / Hard-Faced Seal

· 司太立合金：Stellite

· 压力自紧式阀盖：Pressure-Seal Bonnet

· 伞齿轮传动：Bevel Gear Operator

· 高温合金钢：High-Temperature Alloy Steel (e.g., ASTM A182 F22/F91)

· 电站：Power Station / Power Plant

· 主蒸汽：Main Steam

· 给水：Feedwater

· 无损探伤：Non-Destructive Examination (NDE)