● 概述/ Summary：
Coal gasification is the core device of modern new coal chemical industry. The technical difficulty of gasification device process requirements lies in the measurement and control of high temperature and high pressure medium.Including high temperature and high pressure medium flow, pressure and liquid level control. Under severe working conditions such as high pressure difference, cavitation and erosion, control valves are prone to jam, leakage and erosion, which lead to short service life. The hande elbow type black water angle valve, which integrates more than ten patented technologies, adopts the pipeline type valve body structure, optimizes the trajectory of fluid movement and diffusion in the valve chamber, and adds a tungsten carbide scraper, which enhances the self-cleaning ability of the valve, effectively solves the problems of jamming and scouring, and greatly improves the service life of the black water angle valve.
The product was awarded the title of "China good instrument" by China Instrument Society in 2016.
● 结构和材质/ Structure And Material：
● 特点/ Characteristic：
1、增强阀门自清洁能力，彻底解决了黑水阀卡和漏的老大 难问题 (所有黑水角阀发生卡阻和泄漏的直接原因，都是因 为介质黑水在阀杆形成的结垢。
汉德造黑水阀独特的内嵌式三层刮刀的专利设计，让阀杆具 备了自清洁能力。 采取一 、二层分层破壁，三层刮灰、卸灰 一气呵成，有效防止阀杆结垢 ，本质上规避了因结垢带来的 阀门卡阻， 导致阀门卡死的现象，和结垢拉伤填料而带来的 阀门外漏的情况。
Enhance the self-cleaning ability of the valve, and completely solve the old problem of black water valve sticking and leakage 。(all the direct causes of black water angle valve sticking and leakage are due to the scaling of medium black water on the valve stem.)The unique patent design of built-in three-layer scraper of hande black water valve makes the valve stem self-cleaning. The first and second layers are used to break the wall, and the third layer is used to scrape and unload the ash at one time, which can effectively prevent the valve stem from scaling. In essence, it can avoid the valve sticking caused by scaling, which leads to the valve sticking, and the valve leakage caused by scaling and packing damage.
2、管道式阀体结构，大大缓解黑水角阀的冲蚀困扰 ( 冲 蚀 是黑水角阀通病，根本原因是三相流介质在高温和高压差工 况下产生的气蚀和冲刷破坏。)
汉德弯管式黑水阀，无死角的大圆弧流道设计 ，更符合三相 流介质高压差状态下的流场特性，让气蚀和冲刷发生在碳化 钨合金材质的流道中心，碳化钨有汉德独特工艺和配方的保 障，阀门流通及抗气蚀和冲刷能力显著提升。
The pipe type valve body structure greatly alleviates the erosion problem of the black water angle valve 。 (erosion is a common problem of the black water angle valve, and the fundamental reason is the cavitation and erosion damage of the three-phase flow medium under the working conditions of high
temperature and high pressure difference)
Hande elbow type black water valve, no dead angle of large arc channel design, more in line with the three-phase flow medium under the condition of highpressure difference
The flow field characteristics enable cavitation and erosion to occur in the center of the flow channel made of tungsten carbide alloy. Tungsten carbide is guaranteed by hande's unique process and formula, and the valve's circulation and anti cavitation and erosion ability are significantly improved.
维护保养是提升阀门寿命的基本保障，汉德造黑水阀因为结 构简单，安装调试及后期维护极其方便，阀芯、阀座采用模 块式结构，便于维护 检修和更换。
The structure is simple and convenient for installation and later maintenance
Maintenance is the basic guarantee to improve the service life of the valve. Because of its simple structure, the hande black water valve is extremely convenient for installation, commissioning and later maintenance. The valve core and valve seat adopt modular structure, which is convenient for maintenance and replacement.
4、十多项专利技术融合，应用涵盖了阀体、阀内件及附 件，提高综合性能，整体提升使用寿命。 (高压调节、黑水 调节、刮刀、清除阀杆污垢、阀杆定位、多层刮刀、便于安 装维护、双通、阀杆密封、弯管角阀)
More than ten patent technologies are integrated, and the application covers the valve body, valve trim and accessories, improving the comprehensive performance and overall service life.(high pressure regulation, black water regulation, scraper, cleaning stem dirt, stem positioning, multi-layer scraper, easy installation and maintenance, double way, stem sealing, elbow angle valve)
● 主要技术性能/ Main technical performance：
|ANSI CLASS IV或V级