Generator set quality appraisal

Generator set is a complete set of mechanical equipment that converts other forms of energy into electrical energy. It consists of a power system, a control system, a silencer system, a shock absorption system, and an exhaust system. It is driven by a water turbine, a steam turbine, a diesel engine, or other power machinery. It converts the energy generated by water flow, air flow, fuel combustion, or nuclear fission into mechanical energy and transmits it to the generator, which then converts it into electrical energy and outputs it to the electrical equipment for use.
In the case of generator set quality appraisal, Zhongke Testing can provide generator set quality appraisal services.

1. Material quality: The materials of the generator set should meet the design requirements and have sufficient strength and toughness. The quality of materials can be identified through chemical composition analysis, metallographic examination and other methods.
2. Manufacturing process: The manufacturing process of the generator set should comply with relevant standards and specifications, including processing, welding, heat treatment and other processes. The quality of the manufacturing process can be evaluated through inspection of welds, surface flatness, etc.
3. Testing method: The quality inspection of the generator set can use non-destructive testing technology, such as ultrasonic testing, radiographic testing, etc. These technologies can detect hidden defects such as cracks, pores, etc.
4. Dimensional accuracy: The size of the generator set should meet the design requirements, including the rotor, stator, impeller and other parts. Dimensional accuracy can be checked through gauges and measuring instruments.
5. Insulation performance: The insulation material of the generator set should comply with relevant standards and specifications and have sufficient insulation performance. Insulation performance can be evaluated through methods such as insulation resistance testing.
6. Overall machine performance: The overall machine performance of the generator set includes output electric power, efficiency, power factor, etc. Overall machine performance can be evaluated through actual testing and inspection.
7. Trial operation and debugging: During the installation and debugging process, the generator set should be trial run to ensure its normal operation, safety and reliability.

GB/T 2820.1-2009 Reciprocating internal combustion engine driven alternator set Part 1
GB/T 12786-2006 General technical conditions for automated internal combustion engine power stations
GB 2819-1995 General technical conditions for mobile power stations
JB/T 8194-2001 Terminology for internal combustion engine power stations
YD/T 502-91 (2000) Technical requirements for communication-specific diesel generator sets

was jointly commissioned by a branch of a network communications company and a generator set company to investigate the cause of the failure of the XX generator set involved and to determine whether the current rectification measures for its cooling system pipelines were effective.
identification and analysis results:
The identification and analysis expert group discussed and comprehensive quality technical analysis of the relevant information and on-site investigation of the generator set involved, and made the following recommendations and conclusions:
The quality analysis expert group discussed and comprehensive technical analysis of the relevant information and on-site investigation and inspection of the "XX generator set" involved, and made the following quality analysis opinions:
1, cooling of the "XX generator set" involved The original positioning dimensions of the system and water pipes are unreasonable, and there is a large deviation between the water pipe nozzle and the relative water nozzle position, causing the rubber soft joint to bear abnormal lateral and longitudinal forces. The rubber hose slips under the action of sudden load, long-term working vibration and water pressure pulsation, which is the occurrence of rubber hose slippage. The main cause of coolant spillage;
2. After the accident, the cooling water pipe and its support frame of the "XX generator set" involved have been reasonably adjusted, tightened and modified, which has eliminated the rubber hose from bearing abnormal lateral and longitudinal forces. The diameter of the rubber hose is now slightly larger than that of the cooling water pipe, but with the upper and lower double tightening and normal maintenance, the possibility of water leakage in the cooling system is very small.