A PHP Error was encountered

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\sebberzc.com\application\controllers\news.php
Line: 240
Function: lang

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

A PHP Error was encountered

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\sebberzc.com\application\controllers\news.php
Line: 240
Function: lang

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

A PHP Error was encountered

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\sebberzc.com\application\controllers\news.php
Line: 240
Function: lang

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

Ceramic ball bearing|304 stainless steel roller bearing|SUS304 stainless steel bearing|Stainless steel 420 material bearing|Stainless steel bearing with seat|Stainless steel micro bearing|Solid oil bearing|Electrically insulated bearing|Vacuum pump bearing|Special custom bearing|New energy vehicle bearing|High temperature bearing|Food and beverage bearing|Low-temperature bearing|SEBBER bearings

A PHP Error was encountered

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\sebberzc.com\application\views\news\knowledgePage.php
Line: 24
Function: lang

File: D:\wwwroot\sebberzc.com\application\controllers\news.php
Line: 248
Function: view

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

A PHP Error was encountered

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\sebberzc.com\application\views\news\knowledgePage.php
Line: 24
Function: lang

File: D:\wwwroot\sebberzc.com\application\controllers\news.php
Line: 248
Function: view

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

A PHP Error was encountered

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\sebberzc.com\application\views\news\knowledgePage.php
Line: 24
Function: lang

File: D:\wwwroot\sebberzc.com\application\controllers\news.php
Line: 248
Function: view

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

泵用机械密封检修中的几个误区

2024-08-14

A PHP Error was encountered

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\sebberzc.com\application\views\news\knowledgePage.php
Line: 27
Function: lang

File: D:\wwwroot\sebberzc.com\application\controllers\news.php
Line: 248
Function: view

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

A PHP Error was encountered

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\sebberzc.com\application\views\news\knowledgePage.php
Line: 27
Function: lang

File: D:\wwwroot\sebberzc.com\application\controllers\news.php
Line: 248
Function: view

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

A PHP Error was encountered

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\sebberzc.com\application\views\news\knowledgePage.php
Line: 27
Function: lang

File: D:\wwwroot\sebberzc.com\application\controllers\news.php
Line: 248
Function: view

File: D:\wwwroot\sebberzc.com\index.php
Line: 317
Function: require_once

1.弹簧压缩量越大密封效果越好。

其实不然,弹簧压缩量过大,可导致摩擦副急剧磨损,瞬间烧损;过度的压缩使弹簧失去调节动环端面的能力,导致密封失效。

2.动环密封图越紧越好。

其实动环密封圈过紧有害无益。一是加剧密封圈与轴套间的磨损,过早泄漏;二是增大了动环轴向调整、移动的阻力,在工况变化频繁时无法适时进行调整;三是弹簧过度疲劳易损坏;四是使动环密封圈变形,影响密封效果。

3.静环密封圈越紧越好。

静环密封圈基本处于静止状态,相对较紧密封效果会好些,但过紧也是有害的。一是引起静环密封因过度变形,影响密封效果;二是静环材质以石墨居多,一般较脆,过度受力极易引起碎裂;三是安装、拆卸困难,极易损坏静环。

4.叶轮锁母越紧越好。

机械密封泄漏中,轴套与轴之间的泄漏(轴间泄漏)是比较常见的。一般认为,轴间泄漏就是叶轮锁母没锁紧,其实导致轴间泄漏的因素较多,如轴间垫失效,偏移,轴间内有杂质,轴与轴套配合处有较大的形位误差,接触面破坏,轴上各部件间有间隙,轴头螺纹过长等都会导致轴间泄漏。锁母锁紧过度只会导致轴间垫过早失效,相反适度锁紧锁母,使轴间垫始终保持一定的压缩弹性,在运转中锁母会自动适时锁紧,使轴间始终处于良好的密封状态。

5.新的比旧的好。

相对而言,使用新机械密封的效果好于旧的,但新机械密封的质量或材质选择不当时,配合尺寸误差较大会影响密封效果;在聚合性和渗透性介质中,静环如无过度磨损,还是不更换为好。因为静环在静环座中长时间处于静止状态,使聚合物和杂质沉积为一体,起到了较好的密封作用。

6.拆修总比不拆好。

一旦出现机械密封泄漏便急于拆修,其实,有时密封并没有损坏,只需调整工况或适当调整密封就可消除泄漏。这样既避免浪费又可以验证自己的故障判断能力,积累维修经验提高检修质量。

(来源:网络)