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والوپائپ لائن سیال سیال پہنچانے کے نظام میں ایک کنٹرول جزو ہے۔ یہ گزرنے والے حصے اور میڈیم کے بہاؤ کی سمت کو تبدیل کرنے کے لئے استعمال ہوتا ہے۔ اس میں موڑ ، کٹ آف ، ایڈجسٹمنٹ ، تھروٹلنگ ، چیک ، موڑ یا اوور فلو پریشر سے بچاؤ کے فرائض ہیں۔
والوزused for fluid control, from the simplest shut-off والو to the various والوs used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the والو ranges from extremely small instrument والوs to large diameters up to 10m. والوزfor industrial pipelines. The والو 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 والو 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 والو 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 والو 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 والو The والو 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 والو has the following purposes: 1. Cut-off والو: connect or cut off the medium in each section of the pipeline. Such as gate والو, globe والو, ball والو, plug والو, diaphragm والو, butterfly والو, etc. 2 Regulating والوs: Regulate the flow and pressure of the medium in the pipeline. Such as throttle والو, regulating والو, pressure reducing والو, safety والو, etc. 3 Shunt والو: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution والوs, three-way plug والوs, three-way or four-way ball والوs, traps, etc. Valve classification There are many types of والوs. With the continuous improvement of the process and performance of various complete sets of equipment, the types of والوs are still increasing, but in general they can be divided into two categories: automatic والوs rely on media (liquid, gas, Steam, etc.) a والو that operates on its own. Such as safety والوs, check والوs, pressure reducing والوs, traps, hydraulic control والوs, emergency shut-off والوs, exhaust والوs, etc.
