The
venttiilion putkilinjan nesteensiirtojärjestelmän ohjauskomponentti. Sitä käytetään väliaineen kulkuosan ja virtaussuunnan muuttamiseen. Sen toiminnot ovat suuntaus, katkaisu, säätö, kuristus, tarkistus, suuntaus tai ylivuotopaineen lievitys.
Venttiilitused for fluid control, from the simplest shut-off venttiili to the various venttiilis used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the venttiili ranges from extremely small instrument venttiilis to large diameters up to 10m. Venttiilitfor industrial pipelines. The venttiili 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. The working pressure of the venttiili 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℃. The venttiili 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. The venttiili 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.
The purpose of the venttiili The venttiili 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 venttiili has the following purposes: 1. Cut-off venttiili: connect or cut off the medium in each section of the pipeline. Such as gate venttiili, globe venttiili, ball venttiili, plug venttiili, diaphragm venttiili, butterfly venttiili, etc. 2 Regulating venttiilis: Regulate the flow and pressure of the medium in the pipeline. Such as throttle venttiili, regulating venttiili, pressure reducing venttiili, safety venttiili, etc. 3 Shunt venttiili: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution venttiilis, three-way plug venttiilis, three-way or four-way ball venttiilis, traps, etc. Valve classification There are many types of venttiilis. With the continuous improvement of the process and performance of various complete sets of equipment, the types of venttiilis are still increasing, but in general they can be divided into two categories: automatic venttiilis rely on media (liquid, gas, Steam, etc.) a venttiili that operates on its own. Such as safety venttiilis, check venttiilis, pressure reducing venttiilis, traps, hydraulic control venttiilis, emergency shut-off venttiilis, exhaust venttiilis, etc.
