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济南螺杆空压机主机维护的重要性
Time:2019-05-29 10:11:02       来源:/      

  济南螺杆空压机主机维护的重要性

  Importance of Maintenance of Main Engine of Jinan Screw Air Compressor1.螺杆、主机外壳及高、低压端加工精度高。精度保证了主机装配后,螺杆与螺杆之间、螺杆与主机壳体之间有适当的间隙。间隙大小充分考虑了主机高温运行时螺杆和壳体的变形。
  1. The processing accuracy of screw, main engine housing and high and low pressure end is high. The accuracy ensures that there are proper clearances between the screw and the screw, and between the screw and the shell of the main engine after assembly. The clearance size fully considers the deformation of the screw and shell when the main engine runs at high temperature.
                                  济南螺杆空压机
  2、根据螺杆总成的技术要求,保证螺杆与高低压端面间隙尺寸。主机运转时,螺杆不向轴向运动,高精度轴承保证螺杆允许的径向位移。
  2. According to the technical requirements of the screw assembly, ensure the clearance size between the screw and the high and low pressure end face. When the main engine is running, the screw does not move axially, and the high precision bearing ensures the allowable radial displacement of the screw.
  3.压缩机头正常运行时润滑油形成的油膜,防止螺杆与螺杆直接接触。但随着螺杆空压机运行时间的增加,主机各轴承不可避免地会磨损,导致螺杆轴向运动和径向位移增加。这一变化将使螺杆与螺杆之间的间隙、螺杆与主机壳体之间以及前后端面发生变化。这些间隙变化对轴承的寿命是正常的,允许的,而由此产生的螺杆空压机产气衰减和主电机负荷增加也是正常的,允许的。随着机组运行时间接近机头大修周期,主机轴承的使用寿命逐渐接近最大允许使用期限。此时螺杆的轴向和径向运动动量逐渐接近设计的最大允许值。这一变化将导致螺钉与螺钉之间的间隙、螺钉与主机壳体之间以及前后端面之间的间隙发生较大变化。此时,虽然螺杆空压机主机的运行仍是安全的,但它已考虑到计划安排主机的大修。因为一旦单位的运行时间超过了大修周期,轴承磨损和匹配间隙的主要引擎将达到极限值所允许的技术条件的主要引擎,此时主机在一个不安全的运行状态,并随时可能发生以下严重后果。
                            济南螺杆空压机
  3. Oil film formed by lubricating oil during normal operation of compressor head prevents screw from directly contacting with screw. However, with the increase of screw air compressor operation time, the bearings of the main engine will inevitably wear, resulting in the increase of screw axial movement and radial displacement. This change will change the clearance between the screw and the screw, between the screw and the main body shell, as well as the front and rear end faces. These clearance changes are normal and permissible for the life of bearings, and the resulting gas production attenuation of screw air compressors and the increase of main motor load are also normal and permissible. With the indirect overhaul period near the engine head during the unit operation, the service life of the main engine bearing is gradually approaching the maximum allowable service life. At this time, the axial and radial momentum of the screw approached the maximum allowable value of the design gradually. This change will lead to great changes in the clearance between the screw and the screw, between the screw and the main body shell, and between the front and rear end faces. At this time, although the operation of the main screw air compressor is still safe, it has taken into account the planned overhaul of the main engine. Because once the unit's operation time exceeds the overhaul period, the main engine with bearing wear and matching clearance will reach the main engine with the technical conditions allowed by the limit value. At this time, the main engine is in an unsafe operation state, and the following serious consequences may occur at any time.
  4,螺杆空气压缩机操作负载的增加,鼻子在主电机和电气系统,螺杆空气压缩机之间的头螺钉,螺钉和端面之间的前后,螺钉和可能的强大的主机外壳之间的摩擦使主机运行负荷急剧增加,严重磨损的轴承运转负荷非常大。这样会使电机处于超负荷工作状态,严重危害电机的安全运行。如果情况严重,如果螺杆空压机电气保护装置响应不灵敏或出现故障,也可能导致电机烧坏。
                           济南螺杆空压机
  4. The increase of operating load of screw air compressor, head screw between main motor and electrical system, head screw between screw air compressor, screw and end face, friction between screw and possible powerful main engine shell make the running load of main engine increase sharply, and the running load of badly worn bearings is very large. This will make the motor in an overloaded working state, seriously endangering the safe operation of the motor. If the situation is serious, if the screw air compressor electrical protection device response is not sensitive or failure, it may also lead to motor burnout.
  5、空压机排气会发生较大的衰减,螺杆空压机头部间隙增大会导致主机效率严重降低,即螺杆空压机排气衰减较大,对机组正常生产造成一定影响。特别是对于螺杆空气压缩机排气配置丰富的少量的用户,由于衰减,气体的空气压缩机排气系统相对稳定的条件下,管网将减少大量的压缩空气压力,单位增加噪音,温度、气体系统设备可能出现不能工作或无法正常工作,影响装置的正常生产或导致暂时关闭,带来损失。
  5. Air compressor exhaust will have a greater attenuation, screw air compressor head clearance increase will lead to a serious reduction in the efficiency of the main engine, that is, screw air compressor exhaust attenuation is larger, which has a certain impact on the normal production of the unit. Especially for a small number of users with abundant exhaust configuration of screw air compressor, due to attenuation and relatively stable exhaust system of gas air compressor, pipeline network will reduce a large amount of compressed air pressure, increase unit noise, temperature and gas system equipment may not work or can not work properly, affecting the normal production of the device or causing temporary closure, resulting in losses.
 

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