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燃气轮机工作原理与本体结构.ppt

  • 2026-05-27 22:06:13
燃气轮机工作原理与本体结构.ppt
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1、附件传动系统

附件传动系统主要有由附件齿轮箱及其驱动的设备组成 。起动时,附件齿轮箱将起动设备及变扭器组件输出的扭矩传递给燃气轮机轴。起动完成以后,又可逆向将燃气轮机轴输出扭矩经过相应的齿轮驱动下列各泵:

主润滑油泵:为主机提供润滑油;

主液压泵:提供液压油;

2、启动和盘车系统

启动系统是区别于火电机组的重要特征之一,为燃气轮机机组启动提供动力。一般都采用起动机启动的方式:电动机启动、压缩空气或者柴油机启动、发电机变频启动。在燃机点火达到自持转速时,启动系统自动脱开。此外,起动装置还可以“冷拖”机组,对机组进行高速盘车。

盘车装置是机组在启动前或停机后使转子转动,防止转子的弯曲变形。

3、润滑油系统

滑系统是任何一台燃气轮机中必备的一个重要的工作系统。它的作用是:在机组的启动、正常运行以及停机过程中,向正在运行中的燃气轮发电机组的各个轴承、传动装置及其附属设备,供应数量充足的、温度和压力合适的干净的润滑油,以确保机组安全可靠地运行,防止发生轴承烧毁,转子轴颈过热弯曲,高速齿轮法兰变形等事故。 

润滑油系统的主要设备:

油箱及油箱加热器等附件

主润滑油泵(附件齿轮箱驱动):机组正常运行过程中使用

4、液压油系统

液压油系统为燃料系统和进口可转导叶系统的控制执行元件提供所需要的高压油。液压油取自于机组的润滑油系统。

液压油系统的主要部件有

一只主液压泵:主轴驱动,机组正常运行时投运。

一只辅助液压泵:电机驱动,机组启动或停机级  盘车过程中投运。

两个液压油滤油器及其间的一个切换阀:为系统提供合格的液压油

两套液压油岐管组合:分别连接在两个液压油泵上。

5、控制油系统

控制油系统亦称遮断油系统,它是燃气轮机基本的控制和保护系统,它连接于燃气轮机控制盘和燃气轮机部件之间,用来控制供给和切断机组的燃料。来自机组润滑油系统的遮断油起着遮断的作用(燃机非正常停机和危急停机),同时使液压信号传递给燃料截止阀,实行正常的起动和停机。当遮断油管路里的油被切断(泄油)时,液体燃料截止阀或气体燃料速比截止阀通过弹簧的返回力关阀。

6、燃料系统

气体燃料:由用户提供的气体燃料进入机组气体燃料系统时,首先经过气体燃料滤清器。其作用是用来滤除气体燃料中夹带的大块的杂质。滤清器可以水平安装,也可垂直安装,但排污口必须向下。滤清器必须定期排污,并取出滤芯进行清洗。气体燃料组合阀是气体燃料系统中最关键的一个部件。组合阀系由两个独立的阀(速比阀和控制阀)组成。气体燃料首先经过速比阀SRV,然后再经过控制阀GCV去燃烧室。 

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  1. CONNECT:[ UseTime:0.001183s ] mysql:host=127.0.0.1;port=3306;dbname=h_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001671s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000831s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000906s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001710s ]
  6. SELECT * FROM `set` [ RunTime:0.000650s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001857s ]
  8. SELECT * FROM `article` WHERE `id` = 518507 LIMIT 1 [ RunTime:0.001260s ]
  9. UPDATE `article` SET `lasttime` = 1780591662 WHERE `id` = 518507 [ RunTime:0.062811s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000719s ]
  11. SELECT * FROM `article` WHERE `id` < 518507 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001111s ]
  12. SELECT * FROM `article` WHERE `id` > 518507 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001160s ]
  13. SELECT * FROM `article` WHERE `id` < 518507 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003228s ]
  14. SELECT * FROM `article` WHERE `id` < 518507 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.008673s ]
  15. SELECT * FROM `article` WHERE `id` < 518507 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.038139s ]
0.291794s