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LIANGANG 5000Nm ^ 3 / n Experience in design of oxygen station

Higher values of partial safety. In the calculation, we referred to other information, the decision is still made in the report by the uniformity of the test elasticity Cz = 33660kN/111. So that the high natural frequency calculated, thus ensuring safe and reliable. In addition to dynamic parameters, based on depth, foundation and concrete floor connection, backfill around the foundation status under certain conditions, can affect the degree of foundation cut, calculations based on the actual situation can be improved by the corresponding coefficients a, in order to increase foundation stiffness and improve the foundation of the damping ratio, expand the damping effect. These are the natural frequency of the base set of a great relationship, we have specific requirements in the design, proper conduct of the trade-offs. 1. The basis of the oxygen machine in the design of turns, we consider the role of the foundation depth less, does not consider the impact of backfill around the foundation, nor consider the concrete floor and foundation of the connection function. This basis set calculated from the frequency may be lower than actual, more safe. In fact to consider the role of these factors is to improve conditions. For example: ① based around the filling requirements for the same soil and the soil bulk density and natural ② backfill soil bulk density ratio of not less than 0.85, ⑧ allowable bearing capacity of foundation soil [R] ≤ 350kPa, and these conditions than the first outside are not easy to do, so the calculation should not be considered as favorable factors exist. In the actual design will have to take full advantage of these favorable factors. For example, the cable channel designed to avoid strong edge along the foundation, and backfill compaction coefficient proposed requirements based on concrete floor and the side together, this design actually improved on the foundation stiffness has played a role, but also improve the basis set from vibration frequency, is appropriate. 2. When the air compressor in the design is exactly the opposite, in the calculation taking into account the role of its depth, but also consider the impact of backfill around, so that the calculated times of high natural frequency, the direction of the scrambling around, according to the most adverse circumstances into account. In the construction drawings will be the basis of our conscious and floors, and around the apple filling with a poly vinyl soft layer of foam separated, to reduce the foundation stiffness, to avoid the resonance region. If this calculation results can meet the specifications, then there will be no use of what the actual problem. This approach, we considered to be more secure, but also are somewhat safe. Now LIANGANG 5000Nm / h oxygen stations have been built, leek has been put into production, these machines use a good basis to achieve the desired results. Second, the basic geometric forms and the logical choice based on the oxygen compressor air compressor and there are too block type, wall and frame three. Select foundation type when you first meet the technical requirements, combined with engineering geological conditions at the same time, the machine nature and frequency of disturbance force size, and so a reasonable selection. LIANGANG oxygen stations for the main power plant oxygen compressor, air compressor, expander, in which oxygen compressor low frequency (375r/mln) and the ground type, based on only the highest Li top 0.84m, most of the basic top surface elevation is ± 0.000, engineering geological conditions for the thin overburden, bedrock high, thus requiring the basis of embedded light, bottom area, the quality of the basis set as small as possible in order to improve the natural frequencies, so that the base group is the pre-resonance that the natural frequency higher than the scrambler, it is only designed as massive foundation (see circle 1). 51 A 0.8 '0. Plant 1 == a''= 【3500l100ll as 3500II92JO1 mouth mouth 470O Figure l oxygen compressor based foundation plane prince Yu select size, should make self-frequency than scrambling over large 3O%. We ancillary equipment such as buffer tanks, cooling systems, etc. with the host fused to form a 9.2 × 10.4 basal area of large reinforced concrete foundation, depth of 1.400m. This set out the basis set the frequency to be better than the machine self-propelled high-frequency interference, completely avoid the resonance region, we believe that is an ideal. Air compressor with high frequency, a high-speed machines (12563r/min), equipment is also large, up to top of the motor based on 4.200m, the work can only be based upon the resonance, that machine from the operating frequency band higher than the base group. Let Pán in llI in soil - one by one bone IN. 'I - Summer basis of a 800 025 003 100 Figure 2 compressor consciously plan to increase the basis of depth, increase the basis of quality, to minimize the base area, so that the basis set reduces the natural frequency spectrum of the ideal in the segment. Therefore, based on partial use of the motor wall, the host part is the large type, floor fused (see Figure 2). Taking into account since the frequency is less than scrambling, the process of starting and stopping the machine to go through the resonance region, the basis should try to increase damping and reduce the amplitude in order to stop the process of opening through the resonance zone can be quickly passed to reduce vibration. The way we use the appropriate increase in base depth (base depth for 2.OOm), the results are satisfactory.
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