A steam-driven lubricating oil pump emergency oil supply system and method thereof

A lubricating oil pump and emergency oil supply technology, which is applied in the direction of engine components, engine starting, machine/engine, etc., can solve the problems that can not completely avoid malignant accidents and rely on electric drive, so as to improve safety production performance, prevent major accidents, The effect of ensuring reliability

Active Publication Date: 2016-03-02
JINAN DANENG POWER TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Patent CN201010586032 and patent 201110353693 both relate to power plant steam turbine lubricating oil systems, and propose new emergency oil supply devices and methods, but these methods still rely on electric drive and cannot completely avoid the occurrence of vicious accidents

Method used

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  • A steam-driven lubricating oil pump emergency oil supply system and method thereof
  • A steam-driven lubricating oil pump emergency oil supply system and method thereof
  • A steam-driven lubricating oil pump emergency oil supply system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] figure 1 Shown is the first embodiment of the present invention, the system includes an emergency steam source 1, a power failure emergency automatic start system 6, a drive steam turbine 11 and a centrifugal oil pump body 14, and the power failure emergency automatic start system 6 is arranged on the emergency steam source connected On the steam pipeline 2 of 1, the power-off emergency automatic start system 6 includes an electromagnetic-pneumatic linkage door and a quick-closing main steam valve 4 connected in series. The driving steam turbine 11 is connected on a shaft by coupling 13 and the oil pump body, and is installed on the steel base 8 together. Drive steam turbine 11, shaft coupling 13, centrifugal oil pump body 14 and related steam pipeline 2, oil inlet pipeline 16, oil supply pipeline, related valves, related instruments, etc. form a whole together with base 8, and the outer cover can be used to Sealed up, installed in the steam turbine workshop. It can a...

Embodiment 2

[0052] Such as figure 2 with image 3 As shown, in order to improve the reliability of the system, this embodiment adds a speed constant speed mechanism 7 to the emergency oil supply system of the above steam-driven lubricating oil pump. Between the steam ends, the speed constant speed mechanism 7 includes a steam inlet regulating valve, and the speed constant speed mechanism 7 uses the speed signal fed back by the steam turbine body 10 as a control signal to control and drive the steam turbine 11 by changing the opening degree of the steam inlet regulating valve. purpose of steam.

Embodiment 3

[0054] Such as Figure 4 As shown, the system is further equipped with an experimental system to ensure that the system can be put into operation at any time. In the experimental system, a circulation loop is set at the outlet of the emergency oil pump, which is connected to the main oil tank of the original steam turbine. Ensure that an independent circuit is formed between the outlet and inlet of the centrifugal oil pump during the experiment, which does not affect the safe operation of the lubricating oil system of the original steam turbine.

[0055] Wherein, the experimental system includes an experimental oil tank 17, a self-circulating lubricating oil pipeline, a check door and a manual gate.

[0056] On the inlet and outlet pipelines of the emergency gasoline-driven oil pump, the experimental pipelines are respectively connected to form self-circulating lubricating oil pipelines, which are all connected to the experimental oil tank 17. The specific layout of the inlet...

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Abstract

The invention discloses a steam-driven lubricating oil pump emergency oil supply system and a method thereof. The steam-driven lubricating oil pump emergency oil supply system comprises an emergency steam source, an automatic power-losing emergency starting system, a drive turbine, a centrifugal oil pump body and an experiment system. The steam inlet end of a turbine body is connected to the emergency steam source, and the automatic power-losing emergency starting system is arranged on a steam pipe connected with the emergency steam source. The drive turbine is coaxially connected with the centrifugal oil pump body. The automatic power-losing emergency starting system comprises an electromagnetic pneumatic linkage door and a quickly-closing main steam door which are connected in series. By means of the steam-driven lubricating oil pump emergency oil supply system and the method, the reliability of an emergency pneumatic oil pump is guaranteed, lubricating oil can be effectively provided when turbine accidents occur, a rotor can stop walking safely in the idling curve time, occurrence of serious accidents is prevented, and the safety production performance of a power plant is improved.

Description

technical field [0001] The invention relates to a steam-driven lubricating oil pump emergency oil supply system and a method thereof. Background technique [0002] The steam turbine lubricating oil system is an important part of the steam turbine in the power plant, which mainly includes AC oil pumps and DC oil pumps. The steam turbine lubricating oil system plays a very important role in the steam turbine system. Its task is to reliably provide qualified lubricating oil to the bearings (including support bearings and thrust bearings) and barring devices of the steam turbine generator set in the power plant, and take away the main Heat generated by conduction, friction and turbulence of steam through shafts. When the AC oil pump fails, the DC oil pump supplies lubricating oil to the steam turbine system to ensure the safe operation of the system. However, when there was a unit operation accident before, such as a sudden power failure of the unit, the AC oil pump could no l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01D25/20F01D25/12F01D15/08F01D19/00F01D21/14
Inventor 段君寨成渫畏孙奉仲
Owner JINAN DANENG POWER TECH
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