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Různé klasifikace a použití ventilů

Theventilje řídicí komponenta v systému pro dopravu kapaliny v potrubí. Slouží ke změně průchozího úseku a směru proudění média. Má funkce přesměrování, omezení, seřízení, škrcení, kontrolu, přesměrování nebo odlehčení přetlaku.Ventilyused for fluid control, from the simplest shut-off ventil to the various ventils used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the ventil ranges from extremely small instrument ventils to large diameters up to 10m. Ventilyfor industrial pipelines. Theventil can be used to control the flow of various types of fluids such as water, steam, oil, gas, mud, various corrosive media, liquid metals and radioactive fluids. Theworking pressure of the ventil can be from 1.3х10MPa to 1000MPa ultra-high pressure and working temperature From the ultra-low temperature of -269℃ to the high temperature of 1430℃. Theventil can be controlled by a variety of transmission methods, such as manual, electric, hydraulic, pneumatic, worm gear, electromagnetic, electromagnetic-hydraulic, electric-hydraulic, pneumatic-hydraulic, spur gear, bevel gear drive, etc. ; Under the action of pressure, temperature or other forms of sensing signals, it can act according to the predetermined requirements, or simply open or close without relying on the sensing signals. Theventil relies on the drive or automatic mechanism to make the opening and closing parts lift and slide Move, swing or rotate, thereby changing the size of the flow channel to achieve its control function.

Thepurpose of the ventil Theventil is a kind of pipeline accessory, it is a device used to change the section of the passage and the flow direction of the medium, and control the movement of the conveying medium. It has diversion, cut-off, adjustment, throttling, check, diversion or overflow Functions such as pressure relief. 

Specifically, the ventil has the following purposes: 1. Cut-off ventil: connect or cut off the medium in each section of the pipeline. Such as gate ventil, globe ventil, ball ventil, plug ventil, diaphragm ventil, butterfly ventil, etc. 2 Regulating ventils: Regulate the flow and pressure of the medium in the pipeline. Such as throttle ventil, regulating ventil, pressure reducing ventil, safety ventil, etc. 3 Shunt ventil: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution ventils, three-way plug ventils, three-way or four-way ball ventils, traps, etc. Valve classification There are many types of ventils. With the continuous improvement of the process and performance of various complete sets of equipment, the types of ventils are still increasing, but in general they can be divided into two categories: automatic ventils rely on media (liquid, gas, Steam, etc.) a ventil that operates on its own. Such as safety ventils, check ventils, pressure reducing ventils, traps, hydraulic control ventils, emergency shut-off ventils, exhaust ventils, etc.

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