The
vožtuvasyra dujotiekio skysčių perdavimo sistemos valdymo komponentas. Jis naudojamas pravažiavimo sekcijai ir terpės srauto krypčiai pakeisti. Jis atlieka nukreipimo, išjungimo, reguliavimo, droseliavimo, tikrinimo, nukreipimo ar perpildymo slėgio mažinimo funkcijas.
Vožtuvaiused for fluid control, from the simplest shut-off vožtuvas to the various vožtuvass used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the vožtuvas ranges from extremely small instrument vožtuvass to large diameters up to 10m. Vožtuvaifor industrial pipelines. The vožtuvas 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 vožtuvas 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 vožtuvas 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 vožtuvas 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 vožtuvas The vožtuvas 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 vožtuvas has the following purposes: 1. Cut-off vožtuvas: connect or cut off the medium in each section of the pipeline. Such as gate vožtuvas, globe vožtuvas, ball vožtuvas, plug vožtuvas, diaphragm vožtuvas, butterfly vožtuvas, etc. 2 Regulating vožtuvass: Regulate the flow and pressure of the medium in the pipeline. Such as throttle vožtuvas, regulating vožtuvas, pressure reducing vožtuvas, safety vožtuvas, etc. 3 Shunt vožtuvas: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution vožtuvass, three-way plug vožtuvass, three-way or four-way ball vožtuvass, traps, etc. Valve classification There are many types of vožtuvass. With the continuous improvement of the process and performance of various complete sets of equipment, the types of vožtuvass are still increasing, but in general they can be divided into two categories: automatic vožtuvass rely on media (liquid, gas, Steam, etc.) a vožtuvas that operates on its own. Such as safety vožtuvass, check vožtuvass, pressure reducing vožtuvass, traps, hydraulic control vožtuvass, emergency shut-off vožtuvass, exhaust vožtuvass, etc.
