Diesel Generator Introduction

04.

Some knowledge of diesel generator sets

The concept of diesel generator sets and test methods

  One type of diesel generator sets belong captive power AC-powered devices, it is a small independent power generation equipment, internal combustion engine powered, driven synchronous AC generator and produce electricity.

Modern diesel generator set by the diesel engine, three-phase AC brushless synchronous generator, control box (screen), cooling water tank, couplings, fuel tank, muffler and public base and other components of the overall steel. Flywheel housing and the front cover of the generator using a diesel engine axial positioning shoulder formed integrally directly connected, and the use of the flexible coupling rotating cylindrical flywheel direct drive generator, which are secured together by a screw connection mode, so that the two who join into a steel body, to ensure that within the scope of concentricity diesel crankshaft and generator rotor prescribed.

Diesel generator set is a combination of an internal combustion engine and the synchronous generator from the maximum power is limited by the internal combustion engine parts mechanical load and thermal load, the rated power is called rated power, AC synchronous generator is under the rated speed, Long-term continuous operation, the rated output power, usually diesel engine rated power output between synchronous AC generator with rated power output, called matching ratio.

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Diesel Generator Introduction

(1) if there is a gap between the environmental conditions and the conditions for the calibration of diesel generator sets, the temperature, humidity and altitude values should be indicated in the contract, in order to provide the appropriate models and supporting equipment;

(2) the cooling methods adopted in the use, especially the large capacity units, should pay more attention to;

(3) in order to order, in addition to the unit model, but also to explain the choice of models;

(4) the voltage regulation rate of the diesel generator set is 1%, 2% and 2.5% respectively. Choose what, also should explain;

(5) to provide a certain amount of vulnerable parts when the normal supply is supplied, and the need for a certain amount of time.

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Diesel Generator Introduction

2 categories and specifications

Diesel generating units are classified according to the size of the output power of the generator, and the unit energy is varied from 10kW-750kW to a variety of specifications. Each specification is divided into protection type (equipped with super speed, high water temperature, low oil pressure protection device), emergency type and mobile power station type of structure. The mobile power station is divided into speed can be matched with the car speed of high-speed off-road and has a low speed of ordinary mobile.

3 order matters needing attention

The export inspection of diesel generating set is based on the technical or economic indicators of the contract requirements or technical agreement, and the user should pay attention to the following points when selecting and signing the contract:

(1) if there is a gap between the environmental conditions and the conditions for the calibration of diesel generator sets, the temperature, humidity and altitude values should be indicated in the contract, in order to provide the appropriate models and supporting equipment：

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Diesel Generator Introduction

Diesel generator set is a non continuous operation of power generation equipment, if the continuous operation of more than 12h, its output power will be less than the rated power of about 90%.

Despite the relatively low power of diesel generator sets, but because of its small size, flexible, lightweight, fully furnished, ease of operation and maintenance. Therefore it is widely used in mines, railways, field sites, road traffic maintenance, as well as the factories, enterprises, hospitals and other departments, as a backup power source or a temporary power supply. In recent years, the newly developed unmanned automatic emergency power station, more expanded the scope of the use of the power generation unit.

At present, our country has the export production capacity of the production plant has Tianjin power plant, such as more than 10. Products are exported to Europe and Asia than dozens of countries and regions, by the praise.

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Diesel Generator Introduction

Diesel generating set is composed of internal combustion engine and synchronous generator, maximum power of internal combustion engine by parts of the mechanical load and thermal load limit, known as the rated power and rated power of AC synchronous generator is refers to under the rated speed, long continuous operation, the rated output power, usually the diesel engine rated power output and AC synchronous generator output power rating, called matching ratio.

Diesel generator set

1 Overview

Diesel generator set is a small power generation equipment, the system refers to the diesel and other fuels, diesel engine as the prime mover to drive the power generation of power machinery. Diesel generator sets are generally composed of diesel engine, generator, control box, fuel tank, starting and control storage battery, protection device, emergency cabinet and other components. The whole can be fixed on the basis of positioning, can be installed in the trailer, for mobile use.

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Diesel Generator Introduction

Some knowledge of diesel generating sets

The concept of diesel generating set and its inspection methods

The diesel generator group is a type of self owned power station AC power supply equipment, is a small independent power generation equipment, with an internal combustion engine as power, driving synchronous AC generator and power generation.

The modern diesel generating set is composed of a diesel engine, a three phase AC brushless synchronous generator, a control box (screen), a heat radiation water tank, a coupling, a fuel tank, a muffler and a common base. Diesel engine flywheel shell and the generator front end cover in the axial direction of the convex shoulder is positioned directly connected together, and the use of cylindrical elastic coupling from the flywheel direct drive generator rotating, the way of connection by screws fixed together, so that the two are connected into a steel body, ensure the diesel engine crankshaft and generator rotor concentric degree within the scope of the provisions.

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The basis for the purchase of diesel generator sets

V. Order of diesel generator sets requirements

After make the selections above, order diesel generator sets should generally indicate the following:

References (1) unit, rated power, rated frequency, rated voltage, rated current, phase, power factor and wiring methods.

(2) on the unit automation and performance requirements.

(3) diesel engine, generator and control panel configuration, performance, installation size requirements.

(4) requirements for units operating in parallel: while purchase more than one unit, if the requirements of parallel conduct, such as the need for parallel conduct, but also put forward the need to provide the required measuring instruments and devices in parallel.

Ancillary equipment (5) of the unit requirements: Many domestic manufacturers of the cooling water tank (radiator), fuel tank, exhaust mufflers, batteries, also regarded as ancillary equipment to allow the installation of the proposed requirements when ordering some

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