ది
వాల్వ్పైప్లైన్ ద్రవం అందించే వ్యవస్థలో నియంత్రణ భాగం. ఇది ప్రకరణం విభాగాన్ని మరియు మాధ్యమం యొక్క ప్రవాహ దిశను మార్చడానికి ఉపయోగించబడుతుంది. ఇది మళ్లింపు, కటాఫ్, సర్దుబాటు, థ్రోట్లింగ్, చెక్, డైవర్షన్ లేదా ఓవర్ఫ్లో ప్రెజర్ రిలీఫ్ యొక్క విధులను కలిగి ఉంది.
కవాటాలుused for fluid control, from the simplest shut-off వాల్వ్ to the various వాల్వ్s used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the వాల్వ్ ranges from extremely small instrument వాల్వ్s to large diameters up to 10m. కవాటాలుfor industrial pipelines. దివాల్వ్ 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. దిworking pressure of the వాల్వ్ 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℃. దివాల్వ్ 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. దివాల్వ్ 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.
దిpurpose of the వాల్వ్ దివాల్వ్ 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 వాల్వ్ has the following purposes: 1. Cut-off వాల్వ్: connect or cut off the medium in each section of the pipeline. Such as gate వాల్వ్, globe వాల్వ్, ball వాల్వ్, plug వాల్వ్, diaphragm వాల్వ్, butterfly వాల్వ్, etc. 2 Regulating వాల్వ్s: Regulate the flow and pressure of the medium in the pipeline. Such as throttle వాల్వ్, regulating వాల్వ్, pressure reducing వాల్వ్, safety వాల్వ్, etc. 3 Shunt వాల్వ్: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution వాల్వ్s, three-way plug వాల్వ్s, three-way or four-way ball వాల్వ్s, traps, etc. Valve classification There are many types of వాల్వ్s. With the continuous improvement of the process and performance of various complete sets of equipment, the types of వాల్వ్s are still increasing, but in general they can be divided into two categories: automatic వాల్వ్s rely on media (liquid, gas, Steam, etc.) a వాల్వ్ that operates on its own. Such as safety వాల్వ్s, check వాల్వ్s, pressure reducing వాల్వ్s, traps, hydraulic control వాల్వ్s, emergency shut-off వాల్వ్s, exhaust వాల్వ్s, etc.
