Blog

22

2017

/

11

Features and working principle of automatic exhaust valve

Automatic exhaust valve plays a very important role in practical application. Features and working principle are as follows: 1. features (1) only exhaust, no drainage. The steam and water separation disc is designed with a special structure to ensure that it will not drain when exhausting. (2) Reliable performance. The internal spring of the exhaust valve spool is made of special materials and is made of high-quality stainless steel to prevent oxidation. Oxidation will affect the movement of the valve core; the exhaust mechanism of the exhaust valve is very reliable, and it has passed the exhaust experiment and the pressure sealing experiment before leaving the factory. The individual components are cast with high precision, resulting in a perfect assembly. (3) As long as the system has pressure, the exhaust valve will continue

20

2017

/

11

Types and uses of gate valves

In various types of valves, the gate valve is used more widely. Gate valve refers to the valve that closes the gate along the vertical direction of the channel axis to open or close the valve. In the pipeline, it is mainly used to connect or cut off the medium, that is, fully open or fully closed. General gate valve can not be used as a throttle, it can be used for high temperature and high pressure, can also be used for low temperature and low pressure, and can be used for a variety of different media. Gate valve is generally not used in the conveyor belt particles, viscous, easy scarring medium pipeline. The gate valve has the following advantages: ①The fluid resistance is relatively small, safe and reliable; ②The torque required for opening or closing is small; ③It can be used in

14

2017

/

11

How to choose safety valve and daily maintenance

Selection of 1. safety valve safety valve selection of the general principle is determined by the operating pressure safety valve nominal pressure, safety valve by operating temperature determines the use of the temperature range, by calculating the constant pressure value of the safety valve to determine the spring or lever of the constant pressure range, and then according to the work of the material and structure of the safety valve type, according to the safety of the discharge calculated flow diameter of the safety valve. 1, structure type safety technical specifications have corresponding provisions according to its provisions, such as steam boiler safety valve should adopt full open spring safety valve, lever safety valve and control safety valve 2, nominal pressure by the operating temperature to determine the use of the safety valve temperature range (temperature higher

14

2017

/

11

How to choose safety valve and daily maintenance

Selection of 1. safety valve safety valve selection of the general principle is determined by the operating pressure safety valve nominal pressure, safety valve by operating temperature determines the use of the temperature range, by calculating the constant pressure value of the safety valve to determine the spring or lever of the constant pressure range, and then according to the work of the material and structure of the safety valve type, according to the safety of the discharge calculated flow diameter of the safety valve. 1, structure type safety technical specifications have corresponding provisions according to its provisions, such as steam boiler safety valve should adopt full open spring safety valve, lever safety valve and control safety valve 2, nominal pressure by the operating temperature to determine the use of the safety valve temperature range (temperature higher

10

2017

/

11

Common Faults and Cause Analysis of Safety Valve

Fault one: safety valve leakage. The main reason is (1) the valve core and valve seat contact surface is not tight;(2) the valve core and valve seat contact surface dirt;(3) stem deflection. Fault two: the safety valve to the specified pressure does not open. The main reason is that (1) the valve core and the valve seat are stuck, which can be excluded by manual exhaust test;(2) The spring adjustment pressure of the spring-loaded safety valve is too large and should be readjusted;(3) The heavy hammer of the lever-type safety valve moves backward, and the heavy hammer should be moved to the original fixed pressure position and fastened with the limiting screw. Fault three: the safety valve is not open when the pressure is not specified. The main reason is that (1) the spring adjustment pressure of the spring type safety valve

08

2017

/

11

Matters needing attention in the installation of pressure reducing valve

1., for the convenience of operation and maintenance, the pressure reducing valve is generally installed upright on the horizontal pipeline. 2. valve installation should be strictly in accordance with the direction of the arrow marked on the valve body to maintain and fluid flow direction. If the water quality is turbid and contains some impurities, a filter must be installed at the upstream water inlet of the pressure reducing valve. 3., in order to prevent overpressure after the valve, a pressure reducing valve should be installed at least 4M away from the valve outlet. 4. valve plays a certain role in the pipeline, in order to prevent the harm of water hammer, can also be installed small expansion tank, to prevent damage to pipes and valves, the filter must be installed in the valve before the inlet pipe, and the expansion tank must be installed in the valve after the outlet pipe. 5. If you need to install the pressure reducing valve in the hot water system, you must install a check valve between the pressure reducing valve and the expansion tank. This allows the expansion tank to absorb the increased volume of water due to thermal expansion, but also to prevent hot water backflow or pressure fluctuations on the valve to ensure long-term normal operation of the valve. High-pressure valve 24-hour customer service hotline: if you are interested in or have questions about the above high-pressure valves, please click to contact the online customer service on the left side of our website, or call: 027-89708 619,027-89708339 Wuhan xiete-wholeheartedly for your choice of high-quality valve service. Wuhan Xiete Valve Technology Co., Ltd. is a professional manufacturing enterprise specializing in the R & D, production, sales and after-sales of various valves, filters, gas drains, and throttle orifices. It has 20 years of rich industry experience and owns Xiete Valve brand, has built the best R & D professional team in the industry, has a number of self-designed and developed patented products, and provides customers with the best valve function customization solutions, and has been successful for a number of enterprises, institutions to provide a professional design customization services. At the same time, Wuhan Xiete Valve Technology Co., Ltd. has obtained ISO9001 quality system certification and TS special equipment license. Our product types, complete styles, quality assurance, factory direct sales, economical, convenient and fast to provide customers with one-stop service! Address: No. 5 Shuangliu Zhengjie, Xinzhou District, Wuhan City, 24-hour service hotline: 027-89708339, 027-89708619 Fax: 027-89708939 Website: 027-http://www.xietevalve.com

03

2017

/

11

How to maintain the stainless steel internal thread trap

The opening and closing of the inverted bucket steam trap is based on the density difference between condensate and steam, and its action is accurate and reliable. Stainless steel internal thread trap that can be continuous and intermittent discharge saturated condensate heating equipment will not have water accumulation, so as to obtain the highest thermal efficiency. Stainless steel internal thread traps are mainly used in various steam heating equipment, steam pipe networks and low superheated steam projects in petroleum, electric power, chemical and other industries. It can effectively and quickly remove the condensed water, effectively prevent the steam leakage. The use and maintenance of non-embroidered steel internal thread trap knowledge: 1. When purchasing, it should be confirmed that the material, pressure and temperature of the valve body of the non-embroidered steel internal thread trap can meet the requirements of the working conditions. 2. Before installation, the pipeline must be cleaned to remove debris and ensure the normal operation of the non-embroidered steel internal thread trap. 3. The installation position of the internal thread trap of stainless steel should be as close as possible to the heating equipment. 4, stainless steel internal thread trap in the work, should be placed horizontally at the lowest point of the pipeline, flow and the direction of the body marked on the same. 5, each heating equipment to install their own stainless steel internal thread trap, so as not to affect each other. 6. When ensuring the safe operation of the system, slowly open the valve in front of the stainless steel internal thread trap to gradually heat up to the normal state. High-pressure valve 24-hour customer service hotline: if you are interested in or have questions about the above high-pressure valves, please click to contact the online customer service on the left side of our website, or call: 027-89708 619,027-89708339 Wuhan xiete-wholeheartedly for your choice of high-quality valve service. Wuhan Xiete Valve Technology Co., Ltd. is a professional manufacturing enterprise specializing in the R & D, production, sales and after-sales of various valves, filters, gas drains, and throttle orifices. It has 20 years of rich industry experience and owns Xiete Valve brand, has built the best R & D professional team in the industry, has a number of self-designed and developed patented products, and provides customers with the best valve function customization solutions, and has been successful for a number of enterprises, institutions to provide a professional design customization services. At the same time, Wuhan Xiete Valve Technology Co., Ltd. has obtained ISO9001 quality system certification and TS special equipment license. Our product types, complete styles, quality assurance, factory direct sales, economical, convenient and fast to provide customers with one-stop service! Address: No. 5 Shuangliu Zhengjie, Xinzhou District, Wuhan City, 24-hour service hotline: 027-89708339, 027-89708619 Fax: 027-89708939 Website: 027-http://www.xietevalve.com

01

2017

/

11

How to keep the regulating valve unblocked

调节阀在调节系统中占据重要的调节功能，调节阀若卡住或堵塞会造成调节系统无法正常工作，导致工厂效益受到影响，故在第一时间解决故障尤为重要，下面介绍几种方法： 　　 一、清洗法 　　管路中的焊渣、铁锈、渣子等在节流口、导向部位、下阀盖平衡孔内造成堵塞或卡住使阀芯曲面、导向面产生拉伤和划痕、密封面上产生压痕等。这常常发生于新投运系统和大修后投运初期。这是最常见的故障。 　　若遇此情况，一定要卸开进行清洗，除去废渣物，如密封面受到损伤要及时进行研磨；同时将底塞打开，以冲掉从平衡孔掉入下阀盖内的渣物，并对管路进行冲洗。投运前，让调节阀全开，介质流动一段时间后再纳入正常运行。 　　二、外接冲刷法 　　对一些易沉淀、含有固体颗粒的介质采用普通阀调节时，会经常在节流口、导向处堵塞，可在下阀盖底塞处外接冲刷气体和蒸汽。 　　当阀产生堵塞或卡住时，打开外接的气体或蒸气阀门，即可在不动调节阀的情况下完成冲洗工作，使阀正常运作。 　　 三、安装管道过滤器法 　　对小口径的调节阀，尤其是超小流量调节阀，其节流间隙特小，介质中不能有一点点渣物。遇此情况堵塞，最好在阀前管道上安装一个过滤器，以保证介质顺畅流通。 　　带定位器使用的调节阀，定位器工作不正常，其气路节流口堵塞是最常见的故障。因此，带定位器工作时，必须处理好气源，通常采用的办法是在定位器前气源管线上安装空气过滤减压阀。 　　 四、增大节流间隙法 　　如介质中的固体颗粒或管道中被冲刷掉的焊渣和废绣渣等因过不了节流口造成堵塞、卡住等问题，可改用节流间隙大的节流件—节流面积为开窗、开口类的阀芯、套筒，因其节流面积集中而不是圆周分布的，故障就能很容易地被排除。 　　如果是单、双座阀就可将柱塞形阀芯改为“V”形口的阀芯，或改成套筒阀等，问题马上获得解决。 　　 五、介质冲刷法 　　利用介质自身的冲刷能量，冲刷和带走易沉淀、易堵塞的东西，从而提高阀的防堵功能。将节流口置于冲刷最厉害处，采用此法要注意提高节流件材料的耐冲蚀能力。 　　 六、直通改为角形法 　　直通为倒S流动，流路复杂，上、下容腔死区多，为介质的沉淀提供了地方。角形连接，介质犹如流过90℃弯头，冲刷性能好，死区小，易设计成流线形。因此，使用直通的调节阀产生轻微堵塞时可改成角形阀使用。     高压阀门  24小时 客户服务热线：如果您对以上高压阀门感兴趣或有疑问，请点击联系我们网页左侧的在线客服，或致电：027-89708619,027-89708339武汉协特——全心全意为您的选择优质阀门服务。    武汉协特阀门科技有限公司专注于各种阀门、过滤器、煤气排水器、节流孔板的研发、生产、销售和售后于一体的专业制造型企业，20年行业丰富经验，旗下拥有协特阀门品牌，打造了行内最优秀的研发专业团队，拥有多项自主设计研发的专利产品，为客户提供最佳阀门功能定制解决方案，并已成功为上多家企业、事业单位提供了专业的设计定制服务。同时武汉协特阀门科技有限公司已获得ISO9001质量体系认证和TS特种设备许可证，我们的产品种类，款式齐全，质量有保证，厂家直销经济实惠，方便快捷为客户提供一站式服务！ 地 址：武汉市新洲区双柳正街5号24小时服务热线：027-89708339、027-89708619 传 真：027-89708939网址：http://www.xietevalve.com

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