Regular pump maintenance is to avoid small defects into major defects, small problems become a major problem an important measure, but also to extend the life of the unit, improve equipment, good rate and save energy to create conditions. Regular maintenance and partial maintenance, unit overhaul and expansion of three major overhauls. (1) local maintenance pump. General arrangements in the operation of clearance or winter maintenance period in a planned manner. Local maintenance projects are mainly. 1) fully adjustable pump regulator copper sleeve and the oil cover inspection. 2) centrifugal pump guide bearing inspection. Wear of rubber bearings, water leakage, journal wear, etc. to check, record, deal with. Most of the oil-bearing bearing is Babbitt steel bearings, soft and easy to wear, such as the sealing effect is not good, stop the oil in the basin, sediment deposition, running wear bearings, journal. Especially for un-plated or stainless steel insert stainless steel shaft, in order to understand its corrosion, wear and tear, should be checked regularly. 3) thermometer, instrumentation, relay protection devices such as inspection, inspection. Overhaul 4) Upper and lower guide bearing oil groove and turbine oil sampling test. 5) bearing clearance and tile inspection. Depending on the temperature of the run-time thermometer, there is a purpose check the bearing clearance and axial surface conditions. 6) brake part of the inspection process. 7) All parts of the unit fasteners, such as anchor bolts, shaft keys, dowel pins are loose. 8) Oil cooler appearance inspection and water test to see if there is leakage. 9) Check the cavitation of the impeller, blades and impeller case and the wear and tear of sediment, and measure and record the degree. 10) Measure the clearance between blade and impeller shell. (2) Unit overhaul. It is a planned management effort to restore the unit's technical condition through overhaul. One of the damage to the unit is the accident damage, the probability of occurrence is very small. The second is the normal damage, such as the operation of friction and wear, cavitation damage, sediment wear and tear, the chance of occurrence is small. The second is the normal damage, such as running friction and wear, cavitation damage, sediment wear, vibration caused by a variety of interference, the role of AC stress and corrosion, electrical insulation aging. (3) Enlargement overhaul. When the pump house due to uneven foundation subsidence, etc. caused by the crew axis offset, the vertical concentricity changes; or serious wear and tear of parts, damage, leading to a serious decline in performance and technical and economic indicators of the unit must be disintegrated, repeated repair, replacement , Adjust and carry on partial transformation.
Material:Optical glass N-BK7 , H-K9L, UV Fused Silica, Sapphire, and infrared crystal materials.
Diameter:20-350mm
Diameter Tolerance:+/-0.1mm
Thickness:>2mm
Thickness Tolerance±0.2~0.1mm
Center Deviation:3-5'
Surface quality:80/50 60/40
Coating: Antireflection Coating inside
Chamfers:0.2 x 45° typical
We are manufacturing high transmission and durability domes. BK7 or HK9L Glass domes are often used in meteorology applications. Fused silica domes are commonly used in underwater applications at extreme environments. Other application for our dome include meteorology applications, pyranometers, defence applications and as high pressure view ports in underwater cameras and submersibles.
Material:Optical glass N-BK7 , H-K9L, UV Fused Silica, Sapphire, and infrared crystal materials.
Diameter:20-350mm
Diameter Tolerance:+/-0.1mm
Thickness:>2mm
Thickness Tolerance±0.2~0.1mm
Center Deviation:3-5'
Surface quality:80/50 60/40
Coating: Antireflection Coating inside
Chamfers:0.2 x 45° typical
Hemisphere Dome Lens,Hemispheric Glass Domes Lens,Optical Glass Hemisphere Domes Lens,120 Mm Diameter Glass Dome Lens
China Star Optics Technology Co.,Ltd. , https://www.opticsrealpoo.com