产品名称： SZ品牌液氨紧急切断阀

制造商： 上海上兆阀门制造有限公司

产品编号： 0QDQ421F-25C

应用领域： 化工、石油、制冷、食品加工等行业中液氨管线的紧急安全控制。

产品简介

SZ品牌液氨紧急切断阀是专为液氨等腐蚀性介质设计的自动化安全装置，能够在紧急情况下迅速切断流体通道，防止事故扩大，确保生产安全。本产品采用高品质不锈钢材料制成，具有良好的耐腐蚀性和密封性能，适用于高压、低温及含腐蚀性气体的环境。

技术特点

• 高可靠性： 采用精密的电气控制系统，确保切断动作迅速准确，无泄漏风险。

• 耐腐蚀材料： 阀体、阀座及密封件均选用耐腐蚀合金材料，适应液氨等介质的严苛环境。

• 多重保护： 配备手动复位装置及故障报警系统，便于日常维护与紧急处理。

• 智能化控制： 可与DCS、PLC等自动化系统集成，实现远程监控与自动控制。

• 紧急切断功能： 一旦接收到紧急信号或触发预设条件，立即切断液氨流动，防止事故蔓延。

安装与操作

1. 安装前准备： 检查阀门型号、规格是否符合设计要求，清理管道内的杂物。

2. 安装位置： 应安装在液氨管线的关键位置，便于快速切断流体。

3. 电气连接： 按照电气图纸连接控制器与电源、信号线，确保连接可靠。

4. 测试与调试： 安装完成后进行功能测试，确保切断阀在接收到信号后能迅速响应并切断流体。

5. 日常维护： 定期检查阀门密封性、电气控制系统及报警系统是否正常工作。

注意事项

• 严禁在阀门未完全关闭的情况下进行拆卸或维修。

• 定期检查电气控制线路，避免老化、破损导致故障。

• 严禁使用非原装配件替换阀门关键部件。

• 在操作过程中，应佩戴防护装备，避免液氨直接接触皮肤或眼睛。

Product Introduction

Product Name: SZ Brand Liquid Ammonia Emergency Shutdown Valve

Manufacturer: Shanghai Shangzhao Valve Co., Ltd.

Product Number: 0QDQ421F-25C

Application Fields: Emergency safety control of liquid ammonia pipelines in chemical, petroleum, refrigeration, food processing, and other industries.

Technical Features

• High Reliability: Equipped with a precise electrical control system, ensuring rapid and accurate shut-off action with no leakage risks.

• Corrosion-Resistant Materials: The valve body, seat, and seals are all made of corrosion-resistant alloys, suitable for harsh environments with high pressure, low temperatures, and corrosive gases.

• Multiple Protection Mechanisms: Comes with manual reset devices and fault alarm systems for ease of maintenance and emergency response.

• Intelligent Control: Can be integrated with DCS, PLC, and other automation systems for remote monitoring and automatic control.

• Emergency Shutdown Function: Immediately shuts off the flow of liquid ammonia upon receiving an emergency signal or triggering preset conditions, preventing accident escalation.

Installation & Operation

1. Pre-Installation Preparation: Verify that the valve model and specifications meet design requirements, and clean the pipeline of debris.

2. Installation Location: Install at a strategic point on the liquid ammonia pipeline for quick fluid cutoff.

3. Electrical Connection: Connect the controller to power sources and signal lines according to the electrical schematics, ensuring reliable connections.

4. Testing & Commissioning: Perform functional tests after installation to ensure the valve responds promptly and cuts off the fluid upon receiving a signal.

5. Routine Maintenance: Regularly check the valve's sealing performance, electrical control system, and alarm system for proper functioning.

Precautions

• Do not dismantle or repair the valve while it is not fully closed.

• Regularly inspect electrical control wiring to avoid faults caused by aging or damage.

• Never use non-original spare parts to replace critical components of the valve.

• Wear protective gear during operation to prevent direct contact of liquid ammonia with skin or eyes.