love bracelet cartier Imports increased safety exp

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Imports increased safety explosion-proof motor stator winding synchronous collapse burn Analysis


lt; electrical explosion-proof Guo. Kung blind (Nanyang Explosion Protection Group Co., Ltd., Nanyang, Henan 473008) [keywords] turbogenerator; explosion-proof structure; the type of protection; collecting ring [Abstract] use in Zone 2 hazardous locations generators need to meet explosion-proof requirements to ensure safety in production. Envisaged by the author of the existing turbine generator to transform the light box, the main generator designed for the non-sparking, collecting ring part is proof positive-type duplex structure, to meet the anti-2 hazardous locations burst requirements. [CLC] TM311: TM303 [Document code] A [Article ID] 1004-9l18 (20cr7) 02-00O7-03ApproachontheExplosionProtectedStructureofLight - dutyTurbogeneratorUsedinZone2WUBin, GUOJun, KONGXiang-tao (NanyangExplosionProtectionGroupcD.,, HenanNanyang473008) Keywords: turbogenemtor; explosionprotectionstructure; typeofexplosionprotection; slipringAbstract: Itshouldbemettherequirementsforsafeuseofthegenerat orusedinzone2. ItassumesthatthecurrentcaSe-typelight-dutyturbogeneratorisreconstructedasacombinedexplos ionprotectedtype, themainbodyisdesignedasnospark, thesectionwithslipringisdesigneda######P, whichcanmeettherequirementofZone2. O Introduction At present,p90x workout schedule, the domestic energy crisis, the state has increased investment in energy projects and energy recycling efforts, petrochemical, iron and steel industry optimistic about the situation, the large transformation projects have been started, and the corresponding need to support generators, and thermoelectric energy recovery as heat and power use. However, the majority of steel mills and petrochemical sector is 2 dangerous places, especially in thermal power plant operating environment, gas, dust (such as CO, various types of sulfur compounds, hydrogen, coal dust, soot,love bracelet cartier, etc.) a large probability, if the encounter electrical equipment is extremely easy to cause the spark. In China,mbt shoes ireland, most of the old structure of the generator bearing seat, the next outlet, under the water-cooled structure, cooled in a small room below 8m platform, static thyristor excitation, with a slip ring, can not meet the requirements for use in explosion-proof, there is security risks. Required 15 seconds (as shown in the point A) is qualified within the scope of, and the motor actual tE time only 5 seconds (point B in Figure),ghd planchas, is inconsistent with the increased safety motors for tE time requirements, so the factory and later added a lot more harsh restrictions to limit the motor temperature rise, to compensate for this defect. In addition, increased safety motors within the maximum allowable temperature of 200 ℃, over-temperature will affect the performance of explosion-proof motor, from the above picture to see the rotor on the overheated parts of the damping ring more heat longer, the motor of the anti- burst performance may have been affected. Since the motor can not change the overall structure, so this is just for rotor repair recovery of repair, can not completely solve the damp bar is too small, the damping ring is too small, tE time constraints and other issues. 5 Conclusion # 3 machine from the problems exposed is easy to see, because the motor design and manufacturing process are a number of common problems, rotor overheating is quite conspicuous. Recently we have two of the motor rotor already has a different connection piece was replaced, but can not solve the fundamental problems in the future work, we will increase the frequency of inspection is to shorten the maintenance cycle, closely monitoring the operational status of the rotor. [Received El period] 2OO7-03-09 [Author] Wu Bin, born in 1975, 1998, graduated from Hunan University in Electrical Engineering specialized motor control, mainly engaged in the turbine research and development.
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