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A class 1e diesel generator set

A technology for diesel generator sets and diesel engines, which is applied to machines/engines, mechanical equipment, springs/shock absorbers, etc., can solve the problems of poor working environment for operators, poor high temperature resistance, poor low temperature performance, and poor starting reliability of the unit. Good cooling effect, low natural frequency and good overall stiffness

Active Publication Date: 2015-12-02
WUHAN HAIWANG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Diesel generator sets are damped by shock-absorbing rubber pads, which have poor high-temperature and low-temperature resistance, and are easily eroded by temperature, oil quality, ozone, etc. , its anti-seismic performance becomes worse;
[0009] 2. Starting with an electric motor, the reliability of the unit starting is poor
[0010] 3. Diesel generator sets rely on the shaft fan to cool the heat dissipation water tank installed on the fuselage to realize the heat dissipation of the unit, and the heat dissipation is discharged into the diesel engine room, resulting in high indoor temperature of the diesel engine and poor working environment for operators; in addition Relying on the shaft fan and cooling water tank for heat dissipation, the heat that can be taken away is relatively small, and the cooling effect is poor, so it is not suitable for high-power diesel generator sets, and the rated power of suitable diesel generator sets generally does not exceed 2000kW

Method used

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  • A class 1e diesel generator set
  • A class 1e diesel generator set
  • A class 1e diesel generator set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 , figure 2 As shown, the 1E grade diesel generator set provided by this embodiment includes a diesel engine 1, a generator 2, a flywheel cover 3, an elastic coupling 4, a common base 5, a vibration isolator 6, a starting air motor 7, and an electronic control Cabinet group 8, battery pack 9, external cooling device 10.

[0044] The diesel engine 1 and the generator 2 are centered and positioned as a whole through the flywheel cover 3 and the elastic coupling 4, that is, the output flange of the diesel engine and the driving flange of the generator are connected through the elastic coupling, and the diesel engine body and the generator body are connected through the flywheel The cover connection not only ensures the overall rigidity and coaxiality of the unit, but also reduces the torsional vibration of the diesel generator set shafting.

[0045] The public base 5 is a rigid installation platform welded by steel plates. The diesel engine 1 and the generator ...

Embodiment 2

[0058] In this embodiment, the vibration isolator 6 adopts a steel rope vibration isolator, and the rest is similar to the embodiment 1.

[0059] Such as Image 6 As shown, the vibration isolator 6 includes an upper splint 31, a steel wire 32, a lower splint 33, and a lock nut 34. The upper splint 31 and the lower splint 33 are of split type, and each part is provided with a semicircular hole. The wire rope is inserted into the middle circular hole of the upper splint 31 and the lower splint 33, and is fixed with a lock nut 34. The wire rope 32 It is hinged by multiple strands of steel wire to form a ring shape. The stiffness and damping ratio of the shock absorber mainly depend on the wire rope and the splint, especially the diameter of the wire rope, the number of wires per turn, the length of the wire rope, the torsion angle, the number of turns of the wire rope, and the structural size and material properties of the splint.

[0060] The performance of this type of vibration is...

Embodiment 3

[0062] In this embodiment, the vibration isolator 6 adopts an airbag vibration isolator, and the rest is similar to the first embodiment.

[0063] Such as Figure 7 As shown, the vibration isolator 6 includes an upper mounting plate 41, a clamping protection device 42, an airbag 43, a lower mounting plate 44, a locking nut 45, and an air supplement 46. The airbag 43 is made of synthetic rubber material. The airbag 43 is filled with air. When the air pressure in the airbag 43 is lower than the limit, the airbag 43 must be inflated through the air supplement port 46.

[0064] The rigidity of this type of vibration isolator is mainly ensured by the inflated airbag 43. Its rigidity varies with the air pressure. It has the characteristics of low natural frequency, adjustable frequency, strong carrying capacity, large load adjustable range, etc., and excellent vibration isolation performance , Using this type of vibration isolator to form a vibration isolation system, the natural freque...

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Abstract

The invention relates to a safety-level emergency power supply system of a nuclear power station, and provides a 1E-level diesel generating set. The 1E-level diesel generating set comprises a diesel engine, a generator, a flywheel guard, an elastic coupler, a public base, a vibration isolator, a starting air motor, an electric control cabinet set, a storage battery pack and an external cooling device. The system provided by the invention is small in torsional vibration impact, good in vibration attenuation and earthquake resistance, high in starting reliability, good in cooling effect and wide in output power range, can be started within a regulated time during earthquake and (or) after earthquake, and automatically or manually operates continuously with loads to satisfy demands of the emergency power supply system to set performance and various powers.

Description

Technical field [0001] The invention relates to a safety-level emergency power supply system for a nuclear power station, in particular to a 1E-level diesel generator set. Background technique [0002] Class 1E diesel generator sets are mainly used for safety-level emergency power supply systems of nuclear power plants or other land-based nuclear facilities. When nuclear power stations or other land-based nuclear facilities lose off-site power supply, they can provide power to safety-level system equipment and safety-related system equipment. To ensure the realization of the predetermined functions such as the safe shutdown of the reactor, the discharge of residual heat, the prevention of the release of radioactive materials, or the maintenance of the concentration of radioactive materials below the limit specified in the accident conditions. [0003] During the operating life, the maximum ground motion that can be experienced in the plant area that can be reasonably expected is ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B63/04F16F15/06F16F15/023
Inventor 程良奖徐荣曾宏吴程孙春鹏李保群陈银忠马士虎赵俊涛
Owner WUHAN HAIWANG TECH