Toimintaperiaate periaate kaksinkertainen palkeet paine-ero mittari
Structurally, the double bellows differential pressure gauge is mainly composed of two bellows, a range spring, a torque tube, and a casing. It has a central base 18, and bellows B1 and B2 are installed on both sides of the base. There are rigid end caps at both ends, and are rigidly connected by connecting shaft 5 to form a whole. High pressure and low pressure measurement chambers are formed between the outer sides of the two bellows and the housing, respectively. In order to compensate the error caused by the temperature change, a temperature compensation bellows B3 is connected to the bellows B1 on the high pressure side. distilled water and 50 percent ethylene glycol), sealed for a long time. B1 and B2 communicate with each other through the ring gap between the damping ring and the central base and the damping bypass. In the low-pressure chamber, a range spring is installed between the center base and the free end of B2, and a baffle is installed in the middle of the connection, and the left side of the baffle is close to a miniature ball bearing installed at the lower end of the swing rod. The upper end of the swing rod is fixed on the torque tube, and the mandrel of the torque tube is connected with the instrument pointer system to drive the pointer to rotate.
When the pressure p1 and P2 of the side medium are respectively introduced into the high and low pressure chambers by the pressure guiding tube, under the action of the differential pressure p= p1-P2 >10, palje B1 sisään korkea paine kammio on puristettu, ja tilavuus pienenee, ja sisäpuoli täytetty kokoonpuristumaton neste tahto virtaus matalapaine kammio läpi rengasväli ja vaimennus ohitus, so että palje B2 tulee pidentyy pidentyy ja tilavuus kasvaa 2c ajo-ajo yhdistävä akseli toiseksi vasemmalta oikealle. Milloin yhdistävä akseli liikkuu, it tahtoo ajaa alue jouse jouseen jatkaa kunnes voima muodostuu läpi paikalta paine päälle pohjaan pintaan palkeesta on tasapainossa kanssa muodonmuutos voima alueesta jousesta ja palkeesta.
