ดิ
วาล์วเป็นส่วนประกอบควบคุมในระบบลำเลียงของไหลทางท่อ ใช้สำหรับเปลี่ยนส่วนทางผ่านและทิศทางการไหลของตัวกลาง มีฟังก์ชั่นการเบี่ยงเบน, การตัด, การปรับ, การควบคุมปริมาณ, การตรวจสอบ, การเบี่ยงเบนหรือการลดแรงดันน้ำล้น
วาล์วused for fluid control, from the simplest shut-off วาล์ว to the various วาล์วs used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the วาล์ว ranges from extremely small instrument วาล์วs to large diameters up to 10m. วาล์วfor industrial pipelines. ดิวาล์ว 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. ดิworking pressure of the วาล์ว 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℃. ดิวาล์ว 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. ดิวาล์ว 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.
ดิpurpose of the วาล์ว ดิวาล์ว 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 วาล์ว has the following purposes: 1. Cut-off วาล์ว: connect or cut off the medium in each section of the pipeline. Such as gate วาล์ว, globe วาล์ว, ball วาล์ว, plug วาล์ว, diaphragm วาล์ว, butterfly วาล์ว, etc. 2 Regulating วาล์วs: Regulate the flow and pressure of the medium in the pipeline. Such as throttle วาล์ว, regulating วาล์ว, pressure reducing วาล์ว, safety วาล์ว, etc. 3 Shunt วาล์ว: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution วาล์วs, three-way plug วาล์วs, three-way or four-way ball วาล์วs, traps, etc. Valve classification There are many types of วาล์วs. With the continuous improvement of the process and performance of various complete sets of equipment, the types of วาล์วs are still increasing, but in general they can be divided into two categories: automatic วาล์วs rely on media (liquid, gas, Steam, etc.) a วาล์ว that operates on its own. Such as safety วาล์วs, check วาล์วs, pressure reducing วาล์วs, traps, hydraulic control วาล์วs, emergency shut-off วาล์วs, exhaust วาล์วs, etc.
