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ປ່ຽງແມ່ນສ່ວນປະກອບຄວບຄຸມໃນລະບົບການສົ່ງນ້ ຳ ຂອງທໍ່. ມັນຖືກນໍາໃຊ້ເພື່ອປ່ຽນສ່ວນທາງຜ່ານແລະທິດທາງການໄຫຼຂອງສື່ກາງ. ມັນມີ ໜ້າ ທີ່ຂອງການຫລາກຫລາຍ, ການຕັດ, ການປັບ, ການປິດ, ການກວດ, ການຫລອກລວງຫລືການບັນເທົາຄວາມກົດດັນທີ່ລົ້ນລົ້ນ.
ວາວused for fluid control, from the simplest shut-off ປ່ຽງ to the various ປ່ຽງs used in extremely complex automatic control systems, have a wide range of varieties and specifications, and the nominal diameter of the ປ່ຽງ ranges from extremely small instrument ປ່ຽງs to large diameters up to 10m. ວາວfor industrial pipelines. ທປ່ຽງ 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. ທworking pressure of the ປ່ຽງ 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℃. ທປ່ຽງ 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. ທປ່ຽງ 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.
ທpurpose of the ປ່ຽງ ທປ່ຽງ 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 ປ່ຽງ has the following purposes: 1. Cut-off ປ່ຽງ: connect or cut off the medium in each section of the pipeline. Such as gate ປ່ຽງ, globe ປ່ຽງ, ball ປ່ຽງ, plug ປ່ຽງ, diaphragm ປ່ຽງ, butterfly ປ່ຽງ, etc. 2 Regulating ປ່ຽງs: Regulate the flow and pressure of the medium in the pipeline. Such as throttle ປ່ຽງ, regulating ປ່ຽງ, pressure reducing ປ່ຽງ, safety ປ່ຽງ, etc. 3 Shunt ປ່ຽງ: change the flow direction of the medium in the pipeline, used to distribute, separate or mix the medium. Such as distribution ປ່ຽງs, three-way plug ປ່ຽງs, three-way or four-way ball ປ່ຽງs, traps, etc. Valve classification There are many types of ປ່ຽງs. With the continuous improvement of the process and performance of various complete sets of equipment, the types of ປ່ຽງs are still increasing, but in general they can be divided into two categories: automatic ປ່ຽງs rely on media (liquid, gas, Steam, etc.) a ປ່ຽງ that operates on its own. Such as safety ປ່ຽງs, check ປ່ຽງs, pressure reducing ປ່ຽງs, traps, hydraulic control ປ່ຽງs, emergency shut-off ປ່ຽງs, exhaust ປ່ຽງs, etc.
