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Lateral volute steam inflow type low-pressure inner cylinder for steam turbine

A steam turbine and side technology, which is applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of poor fluidity and unsmooth steam inlet passage, and achieve the effect of ensuring safe operation, compact structure and improving efficiency.

Inactive Publication Date: 2016-03-23
HARBIN TURBINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the steam inlet channel of the low-pressure cylinder of the steam turbine is not smooth and the fluidity is not good, the present invention further proposes a side volute steam-inlet type low-pressure inner cylinder for the steam turbine

Method used

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  • Lateral volute steam inflow type low-pressure inner cylinder for steam turbine

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specific Embodiment approach 1

[0009] Specific implementation mode one: combine figure 1 Describe this embodiment, the side volute steam intake type low-pressure inner cylinder for a steam turbine described in this embodiment includes an inner cylinder body 1, and the inner cylinder body 1 is composed of an upper cylinder body 1-1 and a lower cylinder body 1-1. 2 Form an integrated large inner cylinder structure, the bottom of the lower cylinder 1-2 is provided with eight-stage air outlet 2, seven-stage air outlet 3, six-stage air outlet 4, five-stage air outlet 5, and seven-stage air outlet from left to right Air extraction port 3, eight-stage air extraction port 2.

specific Embodiment approach 2

[0010] Specific implementation mode two: combination figure 1 To illustrate this embodiment, the upper cylinder body 1-1 and the side of the lower cylinder body 1-2 of a side volute steam-inlet low-pressure inner cylinder for a steam turbine described in this embodiment are both provided with air inlets 6 . Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0011] Specific implementation mode three: combination figure 1 Describe this embodiment, the inner cylinder body 1 of a side volute steam inlet type low-pressure inner cylinder for a steam turbine described in this embodiment is a scroll type low-pressure inner cylinder body. Other components and connections are the same as those in the first embodiment.

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Abstract

The invention relates to low-pressure inner cylinders for steam turbines, in particular to a lateral volute steam inflow type low-pressure inner cylinder for a steam turbine. The problems that an existing low-pressure cylinder for the steam turbine is not smooth in steam inflow channel and poor in fluidity are solved. The inner cylinder comprises an inner cylinder body which is of an integrated large inner cylinder structure composed of an upper cylinder body and a lower cylinder body. An eighth air suction port, a seventh air suction port, a sixth air suction port, a fifth air suction port, a seventh air suction port and an eighth air suction port are sequentially formed in the bottom of the lower cylinder body from left to right. The lateral volute steam inflow type low-pressure inner cylinder is used for the steam turbine.

Description

technical field [0001] The invention relates to a low-pressure inner cylinder for a steam turbine, in particular to a side volute steam-inlet type low-pressure inner cylinder for a steam turbine, which belongs to the field of steam turbine equipment. Background technique [0002] The existing low-pressure steam intake mode of the supercritical 600MW steam turbine is that the steam flow enters the middle part of the No. 1 and No. 2 low-pressure cylinders respectively through the middle and low pressure connecting pipes. The low-pressure inner cylinders are both No. 1 and No. 2 inner cylinders, and the unit has poor sealing and rigidity during operation; the welded low-pressure inner cylinder has serious steam intake disturbance and large pressure loss. Contents of the invention [0003] In order to solve the problems of unsmooth steam inlet passage and poor fluidity of the existing steam turbine low-pressure cylinder, the invention further proposes a side volute steam inlet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01D25/24
Inventor 张秋鸿王洪鹏王景生王成佳李伍亮于丽徐鹏张华杰董中杰
Owner HARBIN TURBINE
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