Introduction and installation requirements of orifice plate

The standard orifice plate is a throttle valveConfigurationInstalled in fluid-filledChannelequipment on. Solar termsConfigurationIs a branch of the flow meter, divided into standard termsConfigurationand non-standard solar termsConfiguration. The standard orifice plate belongs to the standard throttleConfiguration.

Introduction and installation requirements of orifice plate

Kaifeng Measurement and Control Technology Co., Ltd. designs and manufactures standard orifice plates that belong to international and national standards. They are made of advanced technology and unique materials, with simple structure and convenient operation.

The standard orifice plate is simple in structure, sturdy, easy to install, stable in work, stable in performance, does not require real-time calibration, and has good measurement accuracy. In addition, the throttleConfigurationCan also adapt to differentialHeavy pressureTransmitter to achieve intelligent temperature,Heavy pressureCompensation and field full path communication. There are three compression methods: edge connection, flange compression and diameter distance extraction. The nominal diameter of the standard orifice plate is usually50-1000mm, standard orifice plate can measure other liquids, gases and vapors, which is very useful.

how to install it?

One standard orifice plate installation direction, upstream orifice plateChannel10D, downstream measurementChannel4D Confirmation

Two measurements,ChannelThe interior should be cleaned of dirt, impurities, and when necessary.Channel, to ensureChannelNo bump and sediment

Three measurements.ChannelThe outer straight pipe section is also flat, please don't be too rough.

The side upstream of the four-hole plate is perpendicular toChannelShaft.

The standard orifice plate can measure the flow of various gases, liquids and steam, and is widely used in throttlingConfiguration.

87 The role of standard minority tube multi-stage orifice plate

Before purchasing the throttle orifice plate, cut off the hydraulic carP, orifice plate series, orifice plate pressure drop, calculate throttle orifice plate pressure drop. Re-determine the orifice diameter of the orifice plate and calculate the orifice diameter of the orifice plate. The purpose of the throttle orifice plate The throttle orifice plate is mainly used in the metallurgical industry hot rolling descaling system. The media is water with a working temperature of 80ChannelInstalled on the flow valve outlet or descaling spray valve with high pressure pre-filled waterChannelon, play a role in regulating media traffic, reducingHeavy pressureThe role.

Detailed description of single-stage throttle orifice plate: throttle orifice plate is inChannelof the appropriate position to reduce the hole diameter. As the liquid contracts through the orifice, the flow appears downstream of the actual contraction. This is called the constricted cross section. The flow rate of the contraction section is very large, and the increase of the flow rate increases with the contraction section.Heavy pressureand greatly reduced. If the stream expands to a larger area, it slows down,Heavy pressurewill increase, but downstreamHeavy pressureDue to greater internal turbulence and energy consumption, it is not possible to fully recover to the upstreamHeavy pressure. Contraction of cross-sectionHeavy pressurePVC decreases from the corresponding temperature of the liquid to the saturated vaporHeavy pressureBelow PV, a small bubble of steam and gas is formed,Heavy pressureThe lower, the more foam is lost from the gas dissolved in the steam and water in the stream. Downstream of the orifice plateHeavy pressurep2 is still lower than the saturated vapor of the liquidHeavy pressurewhen bubbles continue to occur downstreamChannelin which there is liquid vapor two-phase mixing. This is the flash phenomenon. Downstream of cutout orifice plateHeavy pressureRecovery to saturated vapor above liquidHeavy pressureAfter that, the foam quickly coagulates and bursts under the action of high pressure, producing KMT blood, high pressure**The velocity flows into the space occupied by this original foam, forming an impact.

The gas and steam in the bubble are all dissolved instantly and do not condense. Under the action of the impact force, they are divided into small bubbles, compressed by high pressure, condensed, and repeated many times, passing through the sand and gravel we can imagine.ChannelThe noise-like phenomenon is called a republic. Flow channel material surface due to water hammerHeavy pressureThe action causes fatigue and serious damage. We call the entire process of bubble formation, development, rupture and destruction of materials a republican phenomenon.