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1E-level diesel generating 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: 2013-11-27
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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  • 1E-level diesel generating set
  • 1E-level diesel generating set
  • 1E-level diesel generating set

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 , figure 2 As shown, a 1E-class diesel generator set provided in 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, an electric control Cabinet group 8, storage battery group 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 drive flange of the generator are connected through an elastic coupling, and the body of the diesel engine and the generator body are connected through a flywheel. The cover connection not only ensures the overall rigidity and coaxiality of the unit, but also reduces the torsional vibration of the shafting of the diesel generator set.

[0045] The common base 5 is a rigid installation platform welded by steel plates. The diesel engine 1 ...

Embodiment 2

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

[0059] Such as Figure 4 As shown, the vibration isolator 6 includes an upper splint 31 , a steel wire rope 32 , a lower splint 33 , and a locking nut 34 . The upper splint 31 and the lower splint 33 are split-type, and each part has a semicircular hole. The steel wire rope penetrates into the middle circular hole of the upper splint 31 and the lower splint 33, and is fixed with a lock nut 34. The steel wire rope 32 It is made of multiple strands of steel wire hinged to form a ring. 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 angle of the torsion hinge, the number of turns of the wire rope, and the structural size and material properties of the splint.

[0060] The performance...

Embodiment 3

[0062] In this embodiment, the vibration isolator 6 is an airbag vibration isolator, and the rest is similar to that of Embodiment 1.

[0063] Such as Figure 5 As shown, the vibration isolator 6 includes an upper mounting plate 41 , a clamping protection device 42 , an air bag 43 , a lower mounting plate 44 , a locking nut 45 , and an air inlet 46 . The airbag 43 is made of synthetic rubber material. The air bag 43 is filled with air, and when the air pressure in the air bag 43 is lower than the limit value, the inside of the air bag 43 must be inflated through the air supply port 46 .

[0064] The stiffness of this type of vibration isolator is mainly guaranteed by the inflated air bag 43, and its stiffness changes with the air pressure. It has the characteristics of low natural frequency, adjustable frequency, strong bearing capacity, and large load adjustable range, and has excellent vibration isolation performance. , Using this type of vibration isolator to form a vibra...

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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 of a nuclear power plant, 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, and provide power to safety-level system equipment and safety-related system equipment when nuclear power plants or other land-based nuclear facilities lose off-site power. To ensure the realization of predetermined functions such as safe shutdown of the reactor, waste heat discharge, prevention of release of radioactive substances, or keeping the concentration of radioactive substances below the limit value specified in the accident conditions. [0003] During the operating life, the maximum ground motion that can be reasonably expected to be suffered in the plant area is called the operating base earthquake (OBE); the max...

Claims

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Application Information

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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
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