Blog

21

2021

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05

Common types and characteristics of check valves in daily life

Swing check valve disc disc-shaped, rotating movement around the rotating shaft seat channel, the valve into a streamlined channel, the flow resistance is smaller than the lift check valve, suitable for low flow rate and flow changes are not often large diameter occasions, but should not be used for pulsating flow, its sealing performance is less than lift. Swing check valve is divided into single disc type, double disc type and most of the three types, these three forms are mainly divided according to the valve caliber, the purpose is to prevent the medium to stop flow or backflow, weaken the hydraulic impact.

21

2021

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05

Answer the working principle of the check valve

Check valve is to rely on the flow of the medium itself and automatically open and close the valve flap, used to prevent the medium back flow of the valve, also known as check valve, one-way valve, reverse flow valve, and back pressure valve. Check valve is a kind of automatic valve, its main function is to prevent the medium back, to prevent the pump and drive motor reverse, and the discharge of the container medium.

21

2021

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05

What are the classification of check valves?

The check valve is mainly used to prevent the medium in the pipeline from flowing back. Bottom valve and duckbill valve also belong to the check valve system. Check valve can be divided into lifting, swing, disc type three.

21

2021

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05

The check valve ensures the directional flow of the medium in the pipeline without backflow.

The opening and closing of the check valve is to rely on the medium flow force to open and close. Check valve is an automatic valve products, check valve only allows the medium to flow in one direction of the pipeline to use, to prevent the phenomenon of medium backflow. It has a wide range of applications and can be used in large and small caliber, various media, and high-voltage power station systems.

18

2021

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05

A batch of gas drainers are loaded and delivered

A batch of gas drainers are loaded and delivered......

18

2021

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05

A batch of manual gate valves, hydraulic gate valves and hydraulic stop valves have been shipped......

A batch of manual gate valves, hydraulic gate valves and hydraulic stop valves have been shipped......

18

2021

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05

Installation of valve

Installation of valve Description of installation contents of valve: 1. Before installation, check the appearance of the valve without cracks, sand holes and mechanical damage. 2. Check and confirm that the nameplate is in good condition and meets the use requirements. 3. Remove the residue in the valve. 4. Rotate the valve stem to see if it is flexible and free, and install it after confirmation to avoid invalid work. After the inspection is completed, clean the pipeline connected to the valve, and use compressed air to blow away the welding slag and other debris in the pipeline. 5, installation, should be strictly in accordance with the installation instructions provided by the manufacturer. When installing the threaded valve, the sealing packing should be wound on the pipe thread to avoid accumulation in the valve and affect the circulation of the medium. When installing the flange valve, pay attention to the symmetrical and uniform tightening according to the specified torque to avoid uneven tightening torque and damage to the valve. The valve has a direction mark on the valve body, and should be installed correctly according to the direction of the valve flow in and out. For example, check valves, globe valves, throttle valves, pressure reducing valves, if installed upside down, will lose the function of the valve in the pipeline system, and even cause danger. Installation of valve insulation device. Condensation and agglomeration of the medium in the ambient temperature shall be combined with the pipeline for heat preservation and heat tracing to prevent the valve from freezing. (6) For pipelines conveying flammable and explosive gases, nitrogen must be used to purge and replace the pipelines before the pipelines are put into operation, so as to prevent the transmission medium and the oxygen in the pipelines from forming the explosion limit and avoid the occurrence of explosion.

18

2021

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05

Valve design and change analysis

阀门设计的变化和分析    近几年，伴随着随着工业环境的持续不断发展，工业上的规模持续的提升，在竞争如此计划的市场环境里，企业为了能够得到一个比较好的发展，有效的去对先进的机械设备进行使用使其能够对企业当前的工作效率给予提升是当前现代化市场经济保持快速发展的主要要求。在当前机械设备里，阀门所进行的设计是当前整体机械系统保持安全稳定运行的关键内容。有效的对机械设备阀门给予合理的设计，可以说这是对阀门自身价值给予实现的根本内容。 　　1 阀门设计概述 　　阀门可以说是当前工业以及人类进行生活过程中不能够缺少的一种属于通用类型的机械产品，阀门其在当前的流体系统里，主要的目的就是去对流体自身的方向和压力以及流量的装置进行控制，同时其还能够对于配管以及设备内的介质去进行设置使其（液体、气體、粉末）流动或者是暂停并且可以对其自身流量给予控制的主要装置。阀门可以说是管路流体输送系统里不能够缺少的一种控制部件，它主要的目的就是用于去对通路断面以及介质的流动方向进行改善，其本身具备导流和截止，以及节流和止回，还有分流或者是溢流卸压等多种功能。用于流体控制的阀门，从最简单的截止阀到非常复杂的自控系统过程中其主要使用的多种阀门，其自身的品种还有规格可以说是非常多的，阀门其公称通径在非常微小的仪表阀大到通径达到10m的工业管的路用阀。阀门上所进行的控制能够使用多种传动的方式，例如手动和电动，还有就是液动以及气动等；同时其还能够在压力和温度还有其它形式传感信号产生的作用之下，去按照预定的动作要求，或者使其自身不依赖于传感信号而完成大姨的开启或者是关闭。阀门依赖于驱动或者是自动机令使启闭件作升降以及完成滑移还有旋摆以及相关的回转运动，从而使其能够对其自身的流道面积的大小去对其自身所需要进行的控制功能给予实现。 　　2 阀门设计相关标准和变化分析 　　近几年伴随着我们国家经济的飞速发展，国际之间所进行的合作水平也在持续的提升，发展工业可以说是国家强大的一种非常主要的保障，工业化水平其自身的持续提升也使得我们国家的国家经济获得了快速并且稳定同时十分持续的发展，从而使得人们自身的生活水平得到了快速并且十分稳定国的提升。同时还能够使得工业作业水平不能够与机械作业相背离，阀门在当前机械作业系统里也起到了不可忽视的主要作用，阀门当前所进行的设计直接对于机械系统其自身的安全性能产生影响，为了能够令当前的工业获得更加有效并快速的发展，世界山国的很多都开始积极的去对阀门相关的设计以及研究的工作，从而其能够更好的促进我们国家国际化经济的持续与稳定的发展。阀门当前在设计上的规模也开始朝着国际化的方向发展，世界上的很多国家国都对不同类型的阀门进行研究。而在阀门市场上API 6D以及ASME B16.34可以说是进行阀门设计过程中不能够忽视的两个非常主要的标准。

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