ANALYSIS OF SEALING WATER ADJUSTMENT IN SCREW-TYPE SHAFT SEAL FOR FEED-WATER PUMPS

TONG Gang1; LI Wei-dong21.North-east Electric Power Science Research Institute Co Ltd

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ANALYSIS OF SEALING WATER ADJUSTMENT IN SCREW-TYPE SHAFT SEAL FOR FEED-WATER PUMPS

更新时间：2025-09-28

- ANALYSIS OF SEALING WATER ADJUSTMENT IN SCREW-TYPE SHAFT SEAL FOR FEED-WATER PUMPS
- Thermal Power Generation Vol. 39, Issue 1, Pages: 71-73(2010)
- 作者机构：
  
  1. 东北电力科学研究院有限公司
  2. 国电大连庄河电厂
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH136
- Published：2010
- 稿件说明：
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TONG Gang1, LI Wei-dong21.North-east Electric Power Science Research Institute Co Ltd. ANALYSIS OF SEALING WATER ADJUSTMENT IN SCREW-TYPE SHAFT SEAL FOR FEED-WATER PUMPS[J]. Thermal power generation, 2010, 39(1): 71-73.
DOI：

TONG Gang1, LI Wei-dong21.North-east Electric Power Science Research Institute Co Ltd. ANALYSIS OF SEALING WATER ADJUSTMENT IN SCREW-TYPE SHAFT SEAL FOR FEED-WATER PUMPS[J]. Thermal power generation, 2010, 39(1): 71-73. DOI：

摘要

以国电大连庄河电厂1号机组试运期间A汽动给水泵的试验为例

分析给水泵螺旋轴封油中进水的原因。由于给水泵螺旋槽密封效果与泵转速有直接关系

对螺旋槽密封水量调整应在控制出入口温差和压差两方面兼顾进行

即在除氧器投入加热情况下

给水泵密封水量应以调整出入口温差为主、兼顾出入口压差;反之应以调整出入口压差为主。单纯采用固定出入口温差或固定出入口压差调整密封水量方式都是不妥的。

Abstract

Taking test of turbine-driven feed-water pump.A during trial operation of unit no.1 in Zhuanghe Power Plant as an example

the causes leading to water entrance into oil of screw-type shaft for feed-water pump have been analysed.

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