Shanghai Junzhou Generator Recovery Co., Ltd. Generator Set Recovery Brands:
Imported Generator Set Recycling Brands: Cummins, Dongfeng Cummins, Chongqing Cummins, Meikang, Volvo, Perkins, Rolls-Royce, Deutz, Stanford, Leroy-Somer, Caterpillar, Mitsubishi, Yamaha, Daewoo, MTU/Benz, Kubota, Honda, and other imported brands of generator sets.
Domestic Generator Recovery Brands: We recover generator sets from domestic brands such as Yuchai, Shangchai, Weichai, Xichai, Jichai, Quanchai, Tongchai, Changchai, Tag, Taifeng, and Kepu.
Two, Generator Recycling Categories:
Supply diesel generators, generators, hydroelectric power sets, thermal power sets, steam turbines, hydraulic turbines, marine generators, and motor recycling services.
A diesel generator set is a power generation equipment primarily fueled by diesel, which uses a diesel engine as the prime mover to drive the generator (i.e., the dynamo) to produce electricity, converting kinetic energy into electrical and thermal energy. The complete diesel generator set is mainly divided into three parts:
1. Diesel engine.
2. Generator (also known as an electric ball).
3. Controllers.
In detail, the components include the base, diesel engine, base fuel tank, generator set (also known as the power ball), controller (which controls and protects the set), radiator (air-cooled: fan; water-cooled: water tank), and soundproof enclosures, among others. According to varying local requirements, we categorize generator sets into fixed and mobile trailer types. To reduce noise emissions and minimize disruption to work and life, designers have developed silent encased generator sets, which involve installing a metallic box externally lined with sound-absorbing material to shield the generator set. Doors are set on the box sides for easy maintenance and control. The soundproof enclosures not only decrease the noise but can also be placed outdoors, acting as a shelter against sun and rain, alleviating the hassle of finding a机房. Diesel generator sets are divided into standard and backup types, with power ratings accordingly categorized into standard and backup power. The standard power rating of each generator set is typically 80% of the backup rating. For regular use, utilize the national grid; use the backup diesel generator set only when there's a power outage. For long-duration operation, opt for the standard diesel generator set, which can operate for over 300 days a year with regular maintenance. The relationship between standard and backup power ratings is as follows: if a user needs a 100KW diesel generator set, the standard power rating for a backup 100KW set would be 100KW * 80% = 80KW. This means the standard power rating for a backup 100KW diesel generator set is 80KW. If a silent enclosure is added, the generator set's power output may decrease by approximately 10%. Therefore, when purchasing a diesel generator set, users should consider the power reduction due to the silent enclosure.
Power rating
Diesel generator sets are composed of diesel engines and synchronous AC generators. The power that diesel engines can use is limited by the mechanical and thermal loads on the components, therefore, the power allowed for continuous operation, known as rated power, must be specified.
Diesel engines must not be operated above rated power, as this will shorten their lifespan and may even cause accidents.
National standards specify that the rated power marked on the diesel engine plate is divided into the following four categories:
1) 15-minute power rating: This refers to the power at which the diesel engine is permitted to operate for 15 minutes. It typically includes short-term overload operations and rated power with acceleration capabilities, such as the rated power of diesel engines for vehicles and motorcycles.
2) 1-hour Power Rating: The effective power that a diesel engine is permitted to run continuously for 1 hour. Such as the rated power of diesel engines in wheel tractors, locomotives, ships, etc.
3) 12-hour Power Rating: This refers to the effective power that the diesel engine is permitted to run continuously for 12 hours, which is commonly known as the rated power. For example, the rated power of diesel engines used in power station units and construction machinery.
4) Continuous Power: The power that the diesel engine is allowed to run continuously for an extended period.
Operating Principle
Diesel-powered generators operate, converting diesel energy into electrical power.
Inside the diesel engine cylinder, clean air filtered through the air filter is thoroughly mixed with high-pressure atomized diesel spray. Under the compression from the upward stroke of the piston, the volume decreases and the temperature rapidly rises to the diesel's ignition point. Upon ignition, the mixed gas undergoes a violent combustion, causing a rapid expansion that pushes the piston downward, known as 'doing work.' The individual cylinders perform work in a specific sequence, with the thrust acting on the piston converted into the force to rotate the crankshaft via the connecting rods, thereby driving the crankshaft to rotate.
Coaxially install a brushless synchronous AC generator with the diesel engine's crankshaft, and the engine's rotation will drive the generator's rotor. Utilizing the principle of 'electromagnetic induction,' the generator will produce induced electromotive force, which, through a closed load circuit, will generate an electric current.
Diesel generator sets are a type of AC power supply equipment for self-generated power stations, serving as a small, independent power generation unit powered by internal combustion engines to drive synchronous AC generators for electricity production.
Modern diesel generator sets are composed of a diesel engine, a three-phase AC brushless synchronous generator, control cabinet (panel), cooling water tank, coupling, fuel tank, muffler, and common base, forming a rigid whole. The flywheel housing of the diesel engine is directly connected to the front cover of the generator by a shoulder locating method, creating an integrated unit. A cylindrical elastic coupling drives the generator's rotation directly from the flywheel, and the connection is secured with screws, forming a steel structure. This ensures that the crankshaft of the diesel engine and the generator rotor are concentric within the specified range.
To minimize vibration in the engine set, shock absorbers or rubber shock pads are typically installed at the connection points between major components such as diesel engines, generators, radiators, and electrical control boxes, and the common base.
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The spooling area should ensure that the spool is dry. After the spool is filled, seal it with transparent plastic film. Similar to copper wire drawing, many cable companies omit this step. If this step leads to oxidation of the copper conductor, the impact on low-voltage cables is relatively low, but for extra-high-voltage cables, the impact is unimaginable. After the copper conductor undergoes drawing, twisting, and storage, the metallic copper crystal structure is basically stable. Chemical crosslinking involves uniformly extruding XLPE onto the copper conductor under conditions such as crosslinking agents, antioxidants, and coupling agents. Before starting the spooling reel filled with copper conductors, adjust the spooling and unwinding tension to ensure smooth equipment operation.
High-voltage Cable Recovery Product Structure: The components of high-voltage cables from inside to outside include: conductor, insulation, inner sheath, filling material (armor), and outer insulation. Of course, armored high-voltage cables are mainly used for underground installation, capable of withstanding intense ground pressure and also preventing damage from external forces.
