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Concept and Inspection Method of Diesel Generator Set

Aug. 28, 2022

Diesel generator set is a type of AC power supply equipment in self-provided power stations. It is a small independent power generation equipment. It uses internal combustion engine as power to drive synchronous alternator to generate electricity.

chinese generator

Modern diesel generator set is composed of diesel engine, three-phase AC brushless synchronous generator, control box (screen), cooling water tank, coupling, fuel tank, muffler and common base and other components. The flywheel shell of the diesel engine and the axial direction of the front end cover of the generator are directly connected by shoulder positioning, and a cylindrical elastic coupling is used to directly drive the rotation of the generator by the flywheel. The two are connected to form a steel body, which ensures that the concentricity of the crankshaft of the diesel engine and the rotor of the generator is within the specified range.

The diesel generator set is composed of an internal combustion engine and a synchronous generator. The maximum power of the internal combustion engine is limited by the mechanical load and thermal load of the components, which is called the rated power. The rated power of the AC synchronous generator refers to the During long-term continuous operation, the output rated power is usually the matching ratio between the rated power output by the diesel engine and the rated power output by the synchronous alternator.

1. Overview

Diesel generator set is a kind of small power generation equipment, which refers to the power machinery that uses diesel as fuel and uses diesel engine as prime mover to drive the generator to generate electricity. Diesel generator set is generally composed of diesel engine, generator, control box, fuel tank, storage battery for starting and control, protection device, emergency cabinet and other components. The whole can be fixed on the foundation, used for positioning, or mounted on a trailer for mobile use.

Diesel generator set is a non-continuous operation power generation equipment. If it runs continuously for more than 12 hours, its output power will be about 90% lower than the rated power.

Although the power of diesel generator sets is low, they are widely used in mines, railways, field construction sites, road traffic maintenance, factories, enterprises, hospitals and other departments due to their small size, flexibility, light weight, complete supporting facilities, and easy operation and maintenance. , as a backup or temporary power source. In recent years, the newly developed unattended fully automatic emergency power station has further expanded the scope of use of this type of generator set.

At present, there are more than 10 factories in my country with export production capacity, including Tianjin Power Generation Equipment Factory. The products are exported to dozens of countries and regions in Europe, Asia and Africa, and are well received.

2. Classification and Specifications

Diesel generator sets are classified according to the size of generator output power, and the set energy ranges from 10kW to 750kW in various specifications. Each specification is divided into protection type (equipped with over-speed, high water temperature, low oil pressure protection device), emergency type and mobile power station type. Among them, the mobile power station is divided into high-speed off-road type with an hourly speed that can match the speed of the car and ordinary mobile type with low speed.

3. Ordering Notes

The export inspection of diesel generator sets is based on the relevant technical or economic indicators of the contract or technical agreement. Users should pay attention to the following points when selecting and signing contracts:

(1) If there is a gap between the environmental conditions of use and the environmental condition values calibrated by the diesel generator set, the temperature, humidity and altitude values should be stated when signing the contract to provide suitable models and supporting equipment.

(2) Explain the cooling method adopted in use, especially for large-capacity units, more attention should be paid.

(3) When ordering, in addition to the model of the unit, it should also indicate which model to choose.

(4) The voltage adjustment rate of the diesel unit is 1%, 2%, and 2.5% of the rated voltage, respectively. Which one to choose should also be stated.

(5) During normal supply, a certain amount of wearing parts shall be provided, and if there is any need, it shall also be explained.

4. Inspection items and methods

Diesel generator sets are complete sets of products, including diesel engines, generators, control components, protection devices, etc. Whole machine inspection of export products, including the following:

(1) Review of product technology and inspection data.

(2) Specifications, models and main structural dimensions of the product.

(3) The overall appearance quality of the product.

(4) The performance of the unit: the main technical parameters, the adaptability of the unit operation, the reliability and sensitivity of various automatic protection devices.

(5) Other items specified in the contract or technical agreement.

Starlight Power was founded in 1974 and is one of the earliest manufacturers of generators and diesel generator sets in China. If you want get more information, please feel free to send email to sales@dieselgeneratortech.com we will pay highly attention on your question.

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