1、The packing box divulges reason analysis and countermeasure abstract: Reason the packing box divulges which through the analysis petrochemistry enterprise each kind of adjustment valve in, as well as the adjustment valve divulges the harm which brings to the environment and the production, proposed
2、some solution countermeasures. Guan Jianci: Adjusts the valve； The packing box divulges； Seal； Countermeasure 1 foreword adjustment valve is the petroleum chemical industry refines oil in the installment the essential part, its use adjustment valve type many, quantity big, in the chemical production
3、 medium many is corrosiveness strong, virulent or is flammable explosive, when adjusts the valve divulges, not only can create the serious raw material, the energy and the product waste, moreover also has the serious influence to the environment, even causes the serious security accident. . Therefor
4、e, we have the necessity also to have to take in the petroleum chemical industry production process to adjust the valve to divulge the question. Under causes the reason on the petroleum chemical industry installment in which the adjustment valve packing box divulges as well as prevented divulges the
5、 countermeasure, the method with the elimination makes the key discussion. 2 adjustments valves packing box divulges the reason analysis adjustment valve divulges divides into two kinds, namely outside divulges with the interior divulges. In the majority situation, outside divulges the consequence w
6、hich creates, often divulges compared to the interior seriously. In the industrial production, adjusts the valve outside to leak not only creates the raw material and the energy waste, but also can directly pollute the environment, even causes the fire, the detonation, is poisoned and so on the harm
7、 safety significant accident, the national economy creates the heavy loss for. Outside but the packing box divulges also belongs leaks. The packing box divulges reason: The packing box by the stuffing box, the padding, the padding pad as well as the padding contracts the organization and so on to be
8、 composed. The stuffing box sets on the valve body or the valve cover, plays holds the padding the role. The padding pad sets to the stuffing box base, plays the strut padding role.The padding divides the soft nature sealing compound and takes shape the padding two kinds. Takes shape the padding tak
9、e the elastic material quality as the raw material, uses the mould pressing to take shape or the turning processing makes each kind of joiner curtain under, compares, takes shape the padding structure compact, sealing property good, the serviceability is stronger. The medium divulges in the sealing
10、compound place, the reason becomes less crowded, the sealing compound for the padding gland is not strict, the padding variety or the quality does not conform to the requirement, the padding gets older or by the valve lever attrition. 3 adjusts the loss which the valve divulges creates Divulging cau
11、ses which by the above situation, creates the economic loss and further because the medium characteristic different has differently to the environment pollution degree. If is the gas medium, then very easily proliferates the dissemination in the air, its pollution radius can be bigger. The liquid me
12、dium can through have the pollution to the ground seepage, also possibly or the exile expels flood water the ditch through the open ditch, pollutes the rivers and streams lake and other environment.Former Soviet Unions nuclear power station because adjusts the valve the question to breed the unprece
13、dented disaster, not only has caused the significant personnel casualty, creates direct and the indirect economic loss and the environment destroy also with difficulty estimates.The statistical data indicated that, in the production unit approximately 20% adjustment valve existence divulges the ques
14、tion, creates the direct economic loss approximately composes the total losses 5%0 in the petrified profession, take a set of 5000kt/a scale often the decompressor as the example, in the ordinary circumstances has 5,000 about the adjustment valve, divulges the economic loss by 20% adjustment valve w
15、hich creates and the pollution which creates to the environment indeed may not belittle, if looked from the entire petrified profession, the situation was more serious. 4 packing boxes divulge the countermeasure because the adjustment valve packing box seals divulging, as well as valve body connecti
16、on spot seal divulging, is creates adjusts the key which outside the valve leaks to be at, therefore needs specially to take. The traditional soft nature padding seal, is depends on the padding gland the thrust, causes it between the valve lever and the padding as well as the padding and the stuffin
17、g box sidewall, has the certain radial direction contact stress to achieve the seal. Therefore, the gland axial force must be quite big, this creates between the padding and the valve lever rubs the torque to increase, the attrition increases, the soft nature sealing compound wears quickly, thus mus
18、t frequently screw tight the packing bolt or the replacement padding, can guarantee the better seal effect. Uses the appropriate padding seal and the padding seal combination, may enhance adjusts the reliability which the valve uses, lengthens the service life. If the flexible graphite link padding
19、combination use, only uses the flexible graphite link padding the seal effect to be better than. At present in domestic uses the sole flexible graphite link padding the situation quite to be many； But in overseas, uses the flexible graphite link padding combination the application method to start po
20、pularly, and has obtained the good effect. 5 concluding remark In summary, adjusts the valve in the petrification industrial production divulging is the not allow to neglect question, it to the production efficiency, the security as well as can bring the significant influence to the environment. The
21、 elimination adjustment valve divulges the key lies in the optimized adjustment valve structure the design, adjusts the valve according to the different craft condition reasonable choice the material, enhances adjusts the valve in production process quality control level, as well as adjusts the valv
22、e according to the craft operating system optimization the shaping.Along with the science and technology progress, specially the new material appearance, some new structures adjustment valves put into the use, their performance good, the life is long, may satisfy production the need to develop. Refe
23、rence: 1 Wang Xunju Valve use maintenance handbook s Beijing: Chinese petrochemistry publishing house, 1,999 2 German ginger The petroleum chemical industry installment process tube installs design handbook second S Beijing: Chinese petrochemistry publishing house, 1,998 3 Lu Peiwen The valve selects the handbook S Beijing: Mechanical industry publishing house,
