Rotary vane vacuum pump type, characteristics, the current situation. Understand the requirements, determine the repair target. 1. Before testing, prepare the test method. 2. To determine the fault, diagnosed the fault. Judgment, may save trouble. Confirmed to verify. 3. Troubleshooting, first simple and complex, the first easy hard. Do not disassemble without demolition. Vacuum pump unit to reduce due to the lack of special tools and improper operation caused by new damage, reduce the change and run-in time. In general, the splicing rotor is not removable, otherwise the form of tolerance can not be guaranteed, the rotor scrapped. 4. Toxic, corrosive pumps, users should be invited to clean, and inform the necessary protective measures to protect the health of maintenance personnel. 5. Fault classification The fault is divided into operational failure and performance problems. Operation failure can include pump does not turn, the pump temperature is too high, oil spills, water leakage, the maximum power exceeded. Performance failure can include the ultimate pressure, extreme pressure, suction efficiency, noise, fuel injection, gas town performance, etc. can not meet the requirements or not. 6 fault diagnosis and diagnostic examples (1) the pump does not turn. Unidentified can not open the pump, so as not to aggravate the fault. Can be used to move hands and can not move. â‘  pump can move without turning. The reason can be coupling failure; skidding; motor wiring is wrong; motor damage; no power and so on. â‘¡ can not panic or plate up very heavy, the reason can be because the starting pump temperature is too low, the pump oil viscosity is too high; design and manufacture of pump stop too much oil. Water ring vacuum pump is too high caused by the pump back to the oil too much (too much fuel, or water vapor condensation in the pump, or condensate in the exhaust pipe back to the pump); foreign body in the pump (intake manifold (Copper sleeve, rotor, wall, pump cover, stator, bearings). (2) pump temperature too High refers to the lowest exhaust valve measured near the maximum oil temperature exceeds the manual value.As the pump temperature will make the pump oil viscosity dropped significantly and the saturated vapor pressure of the pump oil increased so that the pump ultimate pressure And pumping efficiency decreased; so that the rubber parts easy to aging; thermal expansion of the operating gap reduced, especially in some non-metallic rotary vane thickness and the direction of the hole clearance, affecting the reliability of pump operation. Pump temperature is too high reason Is the pump temperature is too high, the intake air temperature is too high, the intake cooling device fails, the pump long-term continuous operation inlet pressure is too high; water cooling pump cooling water is insufficient, circulating water design ineffective; Oil leakage can occur in the shaft seal, fuel tank and Parts of the sealing surface, the drain plug, oil standard, oil hole bulkhead, stator parts and bearing through-hole connections Department, the gas valve (such as 2X-8) and other parts.Any aging by the seal, improper installation, , The surface is not smooth, there are impurities, rough and loose castings, etc. If you stop the pump back to the oil, the oil will enter the gas town valve, the gas valve may not leak gas. Homemade rubber mat, be sure to use oil rubber, According to the original design shape, the sealing surface is too large when the pressure is not tight will leak. (4) Water leakage can occur in the water pipe joints, water jacket boring cover plane, drain tap, drain valve, etc., Defects, frost cracking, may also result in water leakage. (5) high power over standard .Can be long-term continuous for the inlet pressure is too high, the exhaust pressure is too high, debris into the occurrence occlusion, the pump temperature is too high, Small, too high voltage, too much pump fluid back into the pump, etc., will cause damage to the motor should be avoided in the vicinity of the maximum power for long-term continuous operation. If there is sediment on the surface, to be regularly removed for removal. Not up to. Leakage by the inside , Blockage of oil hole, poor or bad quality of oil pump, deterioration of water, condensable substances such as water vapor, distortion of instrumentation, abnormal operation of pump, etc. When the leakage of 2x rotary vane vacuum pump is large, the exhaust port of chemical pump See the white steam. There are more bubbles at the oil mark, the hand can feel the exhaust pressure on the exhaust port. The low-level exhaust valve has more bubbles on the oil surface. The power will increase .At this time, you should first check the gas town The valve is closed.As a result of the new pump factory outlet in each test the ultimate pressure, so if the leakage phenomenon, the pump port and piping, valves, containers one by one inspection. Outside the shaft seal failure, oil cup oil, oil The leakage of air through the hole can also cause leakage, which can be caused by the movement gap in the pump, the plane of the exhaust valve seat, the sealing surface of the exhaust valve, the inner shaft seal, the plane of the pump cover, the intake pipe, Wear, corrosion, bite will make the running gap increase.Oil blocking, open the fuel filler hole to listen, the pump noise will be lighter, in the case of a good seal, if the hand on the exhaust port has been sucked feeling, Exhaust valve may fail. If the pump oil clean, unused long-term storage, open the town valve to purify the water vapor pump. If invalid, should check apricot meter. If the pump oil yellow and white has emulsified, the gas can be fully open the town, adjust the atmosphere to purify the operation, if necessary, the amount of gas into the pump port operation, can speed up the purification process. If other volatile gases or liquids are pumped, please change the oil in time and wash the oil tank if necessary. Some pumps, in the interstital airway will be deposited pump fluid, in order to obtain a good oil change effect, to find ways to drain the pump fluid.

INCONEL®

Yuhong Group supplies Inconel® alloys C-276, HX, 22, 600, 601, 625 & 718 in the form of Plate, Sheet, Bar, Wire, Pipe, Tubing, Pipe Fittings, Flanges and Electrode.

The registered trademark name, Inconel, is applied as the prefix name to more than twenty different highly corrosion resistant high temperature strength metal alloys produced by Special Metals Corporation. These Inconel alloys or superalloys are nickel-based alloys that exhibit traits such as high resistance to corrosion, oxidation, carburization, pitting, crevice, corrosion cracking, and high temperature strength. Often, Inconel is referred to as [Inco".

Alloys of identical chemical and mechanical properties are available from other manufacturers and offer excellent alternativesto the various Inconel® brand alloys.

The corrosion-resistant superalloys are widely used in extreme environments where tremendous heat and corrosion resistance is paramount to the integrity of the end product. Chemical processing, nuclear, petrochemical, aerospace and marine industries widely use these superalloys.

What are the Characteristics of Inconel ?

Good resistance to acids, such as sulfuric, phosphoric, nitric, and hydrochloric
Almost completely free from chloride induced stress corrosion cracking
Excellent mechanical properties at both extremely low and extremely high temperatures
Outstanding resistance to pitting, crevice corrosion and intercrystalline corrosion
High resistance to oxidation at elevated temperatures

In what Applications are Inconel alloys used ?

Chemical and petrochemical processing
Components where exposure to high mechanical stress and sea water are required
Flare stacks on offshore oil platforms
Gas turbines, rocket motors/engines, and space craft
Pollution control equipment
Nuclear reactors

Inconel Heat Exchanger Tube

Inconel Heat Exchanger Tube,Asme Inconel Heat Exchanger Tube,Inconel 625 Heat Exchanger Tube

YUHONG GROUP CO.,LIMITED , http://www.alloypipeline.com