Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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Function: lang
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
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Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 69
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 240
Function: lang
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
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Message: Use of undefined constant SEC_KEY - assumed 'SEC_KEY'
Filename: database/translate.php
Line Number: 69
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File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 240
Function: lang
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 64
Backtrace:
File: D:\database\translate.php
Line: 64
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 24
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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Function: view
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 24
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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Function: view
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
Severity: Notice
Message: Use of undefined constant SEC_KEY - assumed 'SEC_KEY'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 24
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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Function: view
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
2024-10-14
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 64
Backtrace:
File: D:\database\translate.php
Line: 64
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 27
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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Function: view
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 27
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
Line: 315
Function: require_once
Severity: Notice
Message: Use of undefined constant SEC_KEY - assumed 'SEC_KEY'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 27
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
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File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
轴向位移的定义：
轴向位移又叫串轴，就是沿着轴的方向上的位移。总位移可能不在这一个轴线上，我们可以将位移按平行、垂直轴两个方向正交分解，在平行轴方向上的位移就是轴向位移。轴向位移反映的是汽轮机转动部分和静止部分的相对位置，轴向位移变化，也是定子和转子轴向相对位置发生了变化。全冷状态下一般以转子推力盘紧贴推力瓦为零位、向发电机为正，反之为负，汽轮机转子沿轴向移动的距离就叫轴向位移。
影响轴向位移的因素：
1)负荷变化；2)叶片结垢严重；3)汽温变化；4)蒸汽流量变化；5)高压轴封漏汽大,影响轴承座温度的升高；6)频率变化；7)运行中叶片断落；8)水冲击；9)推力轴瓦磨损或损坏；10)；抽汽停用，轴向推力变化；11)发电机转子窜动；12)高压汽封疏汽压调节变化；13)真空变化；14)电气式轴位移表受频率,电压的变化影响；15)液压式轴位移表受主油泵出口油压、油温变化等影响。
轴向推力增大的因素有：
（1）负载增加，则主蒸汽流量增大，各级整齐压差随之增大，使机组轴向推力增大。抽气供热式或背压式机组的最大轴向推力可能发生在某一中间负荷，因为机组除了电负荷增加外，还有供热负荷增加的影响因素。
（2）主蒸汽参数降低，各级的反动度都将增大，使机组轴向推力增大。
（3）隔板气封磨损，漏气量增加，使级间压差增大。
（4）机组通流部分因蒸汽品质不佳而结垢时，相应级的叶片和叶轮前后压差将增大，使机组的轴向推力增加。
（5）发生水冲击事故时，机组的轴向推力将明显增大。
轴向位移增大的处理：
1) 当轴向位移增大时，应严密监控推力轴承的进、出口油温、推力瓦金属温度、胀差及机组振动情况；
2) 当轴向位移增大至报警值时，应报告管理人员，要求降低机组负荷；
3) 若主、再热蒸汽参数异常，应恢复正常参数；
4) 若系统周波变化大、发电机转子串动，应尽快恢复正常；
5) 当轴向位移达－1.0mm或+1.2mm时保护动作机组自动停机，否则手动紧急停机；
6) 轴向位移增大虽未达跳机值，但机组有明显的摩擦声及振动增加或轴承回油温度明显升高应报告管理人员，请示紧急停机；
7)若轴向位移增大而停机后，必须立即检查推力轴承金属温度及轴承进、回油温度，并手动盘车检查无卡涩，方可投入连续盘车，否则进行定期盘车。必须经检查推力轴承、汽轮机通流部分无损坏后方可重新启动。
机组的轴向位移应保持在允许范围内，一般为0.8～1.0mm，超过这个数值就会引起动静部分发生摩擦碰撞，发生严重损坏事故，如轴弯曲，隔板和叶轮碎裂，汽轮机大批叶片折断等。转子轴向位移（也被成为窜轴）这一指标主要是用以监督推力承轴的工作状况。
目前部分机组还装设了推力瓦油膜压力表，利用这些表计监视汽轮机推力瓦的工作状况和转子轴向位移的变化。汽轮机轴向位移停机保护值一般为推力瓦块乌金的厚度减0.1－0.2mm，其意义是当推力瓦乌金磨损熔化而瓦胎金属尚未触及推力盘时即跳闸停机，这样推力盘和机组内部都不致损坏，机组修复也比较容易。
来源：煤化工知库
（版权归原作者或机构所有）
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 64
Backtrace:
File: D:\database\translate.php
Line: 64
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
Line: 315
Function: require_once
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
Line: 315
Function: require_once
Severity: Notice
Message: Use of undefined constant SEC_KEY - assumed 'SEC_KEY'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
Line: 315
Function: require_once
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 64
Backtrace:
File: D:\database\translate.php
Line: 64
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
Line: 315
Function: require_once
Severity: Notice
Message: Use of undefined constant APP_ID - assumed 'APP_ID'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
Line: 315
Function: require_once
Severity: Notice
Message: Use of undefined constant SEC_KEY - assumed 'SEC_KEY'
Filename: database/translate.php
Line Number: 69
Backtrace:
File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\blfsy.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\blfsy.com\index.php
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Function: require_once
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