Pneumatic control valve in the several problems that should be paid attention to in the installation of commissioning

调节气动阀在安装投运中应注意的几点问题、调节气动阀是工业生产中非常常用和特别重要的控制设备，它工作正常与否直接关系到整个装置的生产正常与否。 At present, with the changing of regulating pneumatic valve technology, adjusting the pneumatic valve manufacturers and very various in form, function also vary, the following focuses on various types of regulating pneumatic valve before installation and commissioning of the common problems should be paid attention to.
、调节气动阀安装前的进货检验调节气动阀的进货检验是一个非常重要的环节，以确认调节气动阀到货情况是否满足设计要求。 调节气动阀的每项技术要求均应达到设计要求，但在进货检验时应着重检查如下几项内
. Pneumatic body/trims specifications the content mainly includes: pneumatic valve, pneumatic valve type, nominal diameter, pneumatic valve, pneumatic valve seat size core form, flow characteristic and leakage level, pneumatic valve, pneumatic valve core material qualitative, pneumatic valve seat material, CV value, the flange size and sealing surface on a standard scale, etc. , as long as find it contains the same content determination of conformity with design to the design and approval.
. Actuators are part of the content mainly check the actuator model, type, form, spring range, gas supply pressure, etc.
. Locator part the content mainly check locator input signal, air pressure, size and level of explosion-proof electrical and gas source interface, including explosion-proof level shall not be lower than design level requirements.
. Accessories according to adjust the design of the pneumatic valve technical requirements carefully clean up the various accessories, such as filtration pressure pneumatic valve, pneumatic valve position switch, electromagnetic valve, the handwheel institutions, special tools. The above content can by cleaning up of inspection, measuring instruments, check the nameplate and dedicated testing means ( Materials such as flange and bolt through the spectrum analysis to identify) Methods to achieve.
、调节气动阀水压试验气动阀体的水压试验包括气动阀体的耐压试验和气动阀芯全关时的泄漏试验。 Normally, when the design pressure than MPa regulating pneumatic valve, pneumatic valve pressure test must be conducted to test the body itself and the pressure of the pneumatic valve cover on.
. Problems should be paid attention to when regulating pneumatic valve pressure test ( ） Regulating pneumatic valve pneumatic valve pressure test using manual hydraulic test pump for water pressure test, it is strictly prohibited the use of electric hydraulic test pump. （ ） Test medium for clean water. （ ） Test pressure for design pressure. Times. （ ） Pressure test with pressure gauge shall be calibrated, and its accuracy should not be less than. Level, the appropriate scale upper limit for the test pressure. ~ times. （ ） Gas drive pneumatic valve in the pressure test of the pneumatic valve pneumatic valve core to open at least % of the opening, it is important to keep in mind that in order to prevent the pneumatic valve core unilateral damage pressure was too high. Normally regulating pneumatic valve pneumatic valve core is to allow certain leakage, according to the regulation of pneumatic valve leakage level difference, generally only require to adjust the elevation difference pressure pneumatic valve ( Grade V, VI leakage) Leak test.
. Problems should be paid attention to when leakage test ( ） Regulating pneumatic valve pneumatic valve pressure test using manual hydraulic test pump for water pressure test, it is strictly prohibited the use of electric hydraulic test pump ( Grade VI leakage of pneumatic valve adopts pneumatic test) 。 （ ） Test medium for clean water, Grade VI leakage of pneumatic valve with clean air) 。 （ ） Leakage level test pressure when working for the pneumatic valve design maximum differential pressure ( Check the design parameters) 。 （ ） Pressure test with pressure gauge shall be calibrated, and its accuracy should not be less than. Limit value of test pressure level, scale. ~ times.
、调节气动阀的单体调校新安装的气动调节气动阀安装之前均应进行单体调校。 Calibration should reach the performance indicators: basic error:
YAZE ( Pneumatic company's main products: pneumatic pneumatic valve pneumatic ball valve pneumatic butterfly valve pneumatic actuator