Back pressure steam turbine start exhaust recovery system

A recovery system and steam turbine technology, applied in steam recovery, steam engine installations, machines/engines, etc., can solve the problems of noise pollution, visual pollution, waste of working fluid, etc. Effect

Active Publication Date: 2017-11-24
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to: aim at the problems existing in the prior art, to provide a back pressure steam turbine start-up exhaust steam recovery system, to solve the problems of waste of working fluid, "visual pollution", noise pollution and other problems in the start process of the back pressure steam turbine

Method used

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Examples

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Effect test

Embodiment 1

[0018] The present invention transforms and innovates on the basis of the conventional start-up exhaust steam system, and proposes a back pressure steam turbine start-up exhaust steam recovery system. Such as figure 2 As shown, the system includes a hybrid start-up exhaust steam heater, start-up exhaust steam recovery hot water tank, start-up exhaust steam pipeline, low-temperature desalinated water pipeline, high-temperature desalinated water pipeline and desalinated water tank. The hybrid starting exhaust steam heater is connected with the back pressure steam turbine through the starting exhaust steam pipeline. The hybrid start-up exhaust steam heater is connected to the start-up exhaust steam recovery hot water tank through a high-temperature desalinated water pipeline. The desalinated water tank is connected to the hybrid start-up exhaust steam heater through a low-temperature desalinated water pipeline.

[0019] After using the invention, during the start-up process of...

Embodiment 2

[0021] In this embodiment, a desalinated water pump and a shut-off valve are arranged sequentially between the desalted water tank and the hybrid start-up exhaust steam heater. A start-up exhaust valve is arranged on the start-up exhaust pipeline. A shut-off valve is provided on the high-temperature desalinated water pipeline.

[0022] All the rest are consistent with Example 1.

Embodiment 3

[0024] In this embodiment, a hot water recovery pipeline is connected to the startup exhaust steam recovery hot water tank, and the hot water recovery pipeline is connected to a low-temperature desalinated water pipeline.

[0025] All the rest are consistent with Example 2.

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PUM

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Abstract

The invention provides a back pressure steam turbine start exhaust recovery system which comprises a hybrid start exhaust heater, a start exhaust recovery hot-water tank, a start exhaust pipeline, a low-temperature saline removal pipeline, a high-temperature saline removal pipeline and a saline removal box; the hybrid start exhaust heater is connected with a back pressure steam turbine through the start exhaust pipeline and is connected with the start exhaust recovery hot-water tank through the high-temperature saline removal pipeline, and the saline removal box is connected with the hybrid start exhaust heater through the low-temperature saline removal pipeline. By the arrangement, problems about working-medium wastage, 'visual pollution, noise pollution and the like existing in starting of the back pressure steam turbine are solved, working mediums and heat are recovered, resources are saved, economy of power plants is improved, and remarkable environment friendly and social benefits are produced.

Description

technical field [0001] The invention relates to the field of steam turbines, in particular to a back pressure steam turbine starting exhaust steam recovery system. Background technique [0002] In heating projects with back pressure steam turbines, such as figure 1 As shown, due to the characteristics of the back pressure steam turbine itself, the unit is generally equipped with a start-up exhaust pipeline, which is used to exhaust steam into the sky when the parameters do not match during the start-up process of the unit, so as to protect the unit and the system. The start-up exhaust pipeline will have the following problems during operation: [0003] (1) During the start-up process, when the exhaust pressure of the back pressure steam turbine is lower than the pressure requirement of the heating network, the unit can only exhaust steam to the air, which will cause a large amount of working fluid loss and heat loss during this period, resulting in "Visual Pollution". [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K19/00
CPCF01K19/00
Inventor 朱瑾阮定龙李良川贺清辉吴明亮江剑张加蓉王金成陈李平张露璐卢游朱桥崔小玲
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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