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Mechanical equipment during the installation process, usually to make a stand-alone debugging debugging and linkage, the purpose of which is to verify the reliability of the device works, but in practice often have to face many unexpected anomalies. Only for practical work on these "anomalies" for effective analysis and processing, to the machinery and equipment installation to function.
, A mechanical equipment installation guide
Mechanical installation of the equipment is equipment shipped by the manufacturer to the construction site, with a number of tools and instruments, after the necessary construction, the device is properly installed on the predetermined position, and by raising the commissioning that they meet the conditions of use. A mechanical device can be put into production, can give full play to its performance, extend equipment life, and improving the quality of products, to a large extent depend on the quality of machinery and equipment installed.
1. the general process of mechanical equipment installation
Various mechanical equipment installation procedures generally have been: lifting and transport, equipment inspection, put the line in place, opening the box appliance and parts assemble adjustments, cleaning, parts Assembly, commissioning and project acceptance. The difference is, in these processes, different approach to different mechanical devices, for example, during the installation, on installation method of large equipment, and installation method is used for small devices.
2. machinery and equipment installation and construction
Mainly include lifting and transport of equipment Assembly of whole and parts, mechanical equipment, pipe fittings, cutting and welding, and all kinds of containers for the installation of internal parts of the Assembly, for the mounting, installation and commissioning of instrumentation and automatic control devices, pressure test and commissioning work.
3. installation of the mechanical equipment required
First to strictly ensure the quality of installation, according to design drawings, maps, installation instructions and code for construction and acceptance of equipment, quality inspection and evaluation standards and procedures for proper construction, followed by also using scientific methods of construction, speed up the progress of works to ensure that scheduled to go into production.
Second, mechanical equipment during installation and commissioning
1. the bearing temperature is too high
Wind turbine bearing temperature is unusually high because there are three classes: exception bad, inadequate cooling and bearing lubrication. Bearing of centrifugal fan placed outside the fan, if due to stripping, Ma Hang, fatigue wear of the bearing clearance increases due to higher temperatures. General bearings by listening to sound and measuring vibrations in order to judge, is the poor lubrication, cooling, not enough to cause it can be Visual, intuitive methods such as fingerprint judgment. Axial fan bearings set inside the bearing box, placed below the intake room, when the bearing temperature is high, due to the fan running, it is difficult to judge whether problem is bearing or lubrication, cooling problems. Actual commissioning from the following aspects to solve the problem.
2. bearing vibration
Common failures in fan bearing vibration is running. Fan vibrations can cause bearing damage, loose bolts, housings and blades and duct damage, faults, seriously endangering the safe operation of the fan.
3. surge
Fan operation process, when declining flow Qmin value, into the Cascade with flow separation, separation zone along the direction of rotation of the impeller and with speed less than the angular velocity of rotation of the impeller, which is rotated out. When rotating from spreading to the entire channel, makes the fan discharge pressure suddenly dropped considerably, and pipe network pressure is not reduced immediately, so the gas pressure in the pipeline network is greater than the pressure at the fan exit, the reverse flow of gas in the pipeline to fans until the pressure in the pipeline network export pressure drop below the blowers stopped. Then, blower and began to tube network gas, will back of gas pressure out, this and make machine within flow reduced, pressure again suddenly declined, tube network in the of gas again back to wind machine within, so cycle, in whole system in the produced cyclical of low frequency high amplitude of pressure pulse and the airflow Oscillation phenomenon, and issued is large of sound, machine produced dramatic vibration, and cannot work, this is breath vibration. If surge condition, circumstances depending on the fan operation.
4. rotor jam
Axial flow mobile leaf driven slide valve adjustment is through the transmission to change hydraulic oil pressure difference on both sides to achieve it. The axial fan is running, sometimes difficulty in regulation or no regulation. This phenomenon is usually considered to be fan-speed fuel-saving system failures and damage to wheel internal regulating bodies. But usually are another reason wind maneuver in a certain gap between the blades and hub to achieve dynamic adjustment of blade angle, caused by incomplete combustion of carbon fouling or of dust formation blades adjust plug gap problems. Jam the blade in oil-burning boiler water film dust collector and boiler is more prevalent and solving measures for:
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NNU4940MBKRCC1P4 NSK | 200 | 280 | 80 |
| NN4940MBKRCC1P4 NSK | 200 | 280 | 80 |