1, check the butterfly Industrial Valves shaft, dampers etc is complete, flexible and tight, replace the sealing washer. By 0. 5 mpa pressure test, the panel should be closed tight, no serious leakage, shaft rod seal is good, the 'on', 'closed' position marks clearly and accurately. 2, the accelerator ( The accident accelerator, put the throttle) Should remove the breakdown maintenance, grinding and replace the packing, 0 should be done after repair. 15 mpa pressure test should not have leakage. 3, of the various parts of the transformer body and attachments vent plug and drain plug, sample throttle travel such as overhaul, replace the seal, no leakage should be properly sealed. Introduction to transformer oil treatment: to increase of transformer oil dielectric strength, dielectric loss factor indicators, such as transformer oil before injection fuel tank must be treated, by removing the moisture in oil, gas and impurities. In practical application, we targeted treatment for different types of transformer oil, the effect is better. 1, for the average by water and dust pollution of impurities such as transformer oil, can use the plate and frame type pressure filter, after many loop filter, often can meet the requirements. Its principle is to use the filter paper to absorb moisture, filtering impurities. Because of its simple structure, easy to carry, also widely used. The disadvantage is that filter is not complete, on tiny impurity removal effect is not good, and cost is higher, when water is big, filter paper need to be changed frequently. 2, are now widely used vacuum filter oil machine, it can not only remove moisture and gas in the oil, and can effectively remove tiny impurities. The technological process is: transformer oil to be processed to coarse filtration and fine filtration, heating oil vacuum dehydration degassing - net oil. Coarse filter use metal mesh and the strong magnets, fine filter usually 1 ~ mu m tiny impurities. At present, many different kinds of fine filter, with metal powder sintered microporous materials, metal materials, ceramic filter material and the use of special structure of filter paper filter core, etc. Transformer oil heating vacuum dehydration degassing. Its principle is vacuum inside the tank, the heating of transformer oil by spray method to form oil mist, and make the gas in oil and water escape. The oil temperature at 65 ℃ or so, don't too high, lest make the aging oil. Dehydration degassing effect is better, this method is a widely used method at present. However, if the oil is sprayed into very fine mist, is easy to be vacuum pump. If oil is sprayed into certain diameter bead, bead has high interfacial tension is due to the oil, the oil bead in the water and gas is not easy to give full play to. To this end, the diameter of the spray oil hole should choose appropriate, and common needs in the tank emptied mouth set several baffle, prevent the transformer oil by vacuum pump. At present, foreign and domestic also USES a more advanced membrane dehydration degassing method, is put into a jar of oil, after some degassing components form a very thin oil film, and always with complete dehydration degassing process state of oil film, so that easy to remove the moisture in oil and gas. 3, processing method of transformer oil is contaminated. The contaminated transformer oil ( Commonly known as dirty oil) , it is to point to be mixed with the tiny impurity and oil molecules combine to form a colloid pollution of transformer oil, and used in transformer oil after many years, common for repaired products out of the oil ( The pH value has very low oil) 。 To this kind of dirty oil is must use the method of adsorption treatment can improve the oil indicator. More than ordinary using silica gel ( SiO2) Or activated alumina ( A12O3) Do the adsorbent. Dirty oil processing system, to ensure good contact with silica gel and the transformer oil, and is advantageous for the replacement of silica gel, the silica gel inside the tank set number of partition, rotation of silica gel is put into a small bag, not in bulk. After heating transformer oil into the silicone pot, do a certain time of circulation, make them give full play to the adsorption effect, then through the filter oil machine into the net inside the tank. In the process should be monitored regularly, to determine the adsorption effect, when the adsorption effect is not obvious, which should consider replacement of silica gel. Ordinary dosage of the silicone oil meter by weight accounted for about 3% ~ 5%. Dirty oil processing system should be separated from new oil processing system, so as to avoid cross contamination. Loaded with a dirty oil tank, vessel, etc. , must be thoroughly cleaned after can be used for normal production of oil system.
The point for Shenzhen Mech Valve Trading Co., Ltd. is that managerial processes are as important as other inputs in production and can create significant competitive advantage.
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