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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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
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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
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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
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: lang
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Function: require_once
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Filename: database/translate.php
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File: D:\database\translate.php
Line: 69
Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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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
2024-06-18
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\views\news\knowledgePage.php
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Function: lang
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File: D:\database\translate.php
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Function: _error_handler
File: D:\wwwroot\blfsy.com\application\views\news\knowledgePage.php
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Function: require_once
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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\views\news\knowledgePage.php
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Function: lang
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Function: require_once
采暖泵房2＃电机是一台高压防爆电机，功率400kW，由于负荷较重，轴伸端采用圆柱滚子轴承（NU226），非轴伸端为定位端，采用深沟球轴承（6226）。采暖季到来之前，加注润滑脂后试运正常，于2023年11月8日投入运行。2024年1月18日上午，值班人员巡检时发现轴伸端轴承室外小盖温度较高（60℃），几个小时后温度上升到了90℃，已接近滚动轴承运行允许的最高温度95℃，于是倒泵后退出运行，停机进行检修。
这次“轴承过热”故障的原因令人费解。一般来说，轴承过热故障的原因不外乎如下几点。
1、装配质量问题
安装、配合方面如果存在问题，轴承将不能正常运行，但这台电机已正常运行了两个多月，并非新电机试运，肯定不会是这个原因。
2、找正对中问题
联轴器不对中，将会使轴承承受很大的径向力，运行时将会发热。但这台电机两个多月来一直运行，其间没有修过泵，不存在找正对中问题。
3、轴承损坏
无容置疑，损坏的轴承运行时会发热，但同时必定伴有异常的音响。而这次轴承的声音非常好听，几乎没有任何杂音。
4、润滑脂过多或过少
润滑脂过少时轴承润滑不良，润滑脂过多时会堆积在轴承系统内腔，极不利于热量的散发。但这台电机最近没有加过油，润滑脂显然不可能过多。而如果润滑脂过少，应该会有异常的“咝咝”声。
5、润滑脂牌号不对
这台电机已正常运行了两个多月，最近没有加过油，也不是新电机试运，可以排除这个原因。
6、使用环境恶劣
如果电机的使用环境潮湿或具有腐蚀性，将会造成润滑脂变质，轴承可能会生锈，但这台电机的使用环境较好，不存在这个问题。
带着种种疑问准备检修电机，拆掉联轴器后，用手转动电机，根本转不动，说明电机确实出现了问题，但疑问并没有解除。接着对电机进行解体检查，观察轴伸端轴承，虽经过一定时间的高温运行，油膜还算正常，轴承也转动良好。进一步检查，发现轴承室内小盖黏在了轴上，用力挪动内小盖后，看到小盖内孔（厚度约20mm）和轴之间的缝隙里有层油泥，就是这层油泥黏住了小盖，大大增加了电机转动时的摩擦力，在这个位置摩擦生热，传到了轴承室外小盖。至于油泥的来源，应该是电机内部漆膜老化形成的少量粉尘，被内风扇吹到轴承室内小盖和轴之间的缝隙里，混合了润滑脂形成的。
综上所述，这起“轴承过热”故障并非是真正意义上的轴承过热，而是油泥黏住了轴承室内小盖，电机转动时摩擦生热。由此也让我更加坚信了“轴承运转声音正常就不是轴承的问题”这一观点。
来源：电工知库
（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
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Function: view
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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
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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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
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Function: view
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: 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
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Function: view
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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
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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
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Function: view
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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
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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
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