Severity: Notice
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: 64
Function: _error_handler
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
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Function: lang
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\controllers\news.php
Line: 240
Function: lang
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\controllers\news.php
Line: 240
Function: lang
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 33
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 33
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 33
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.com\index.php
Line: 315
Function: require_once
2024-03-28
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\jzbearing.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 36
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.com\index.php
Line: 315
Function: require_once
机组轴承冷却系统一般分为内循环、外循环，而外循环可分为镜板泵油冷却系统外循环、外加泵油冷却系统外循环以及导瓦泵外循环，而抽水蓄能电站机组多以外循环系统为主。
1、其总体特点如下：
1）外加泵，可保证流速稳定，完全满足冷却油循环流量的需要。
2） 镜板泵的孔大小或导轴承间隙完全不影响油的流量和冷却效果，避免了因计算误差产生的先天不足；油槽内不必设置流速控制装置，避免了设备操作的麻烦和提高了可靠性。
3 ）油泵工作压力可达10bar，压力足够高，可以使用油过滤器。
4 ）冷却器尺寸可以减少，因为外加泵油循环冷却系统对冷却器油侧压力损失的限制远没有自身泵系统要求的高。
5 ）冷却系统可以独立于机组工作。无需其它设备，在机组试运行或者维修后，可以直接过滤冷却油。油从油槽出来，经过泵、过滤器、油冷却器然后回到油槽内的供油环管。使用温度、压力及流量控制等监测设备可以保证油循环的可靠性。
6 ）采用外加泵油循环冷却便于集成化和标准化设计制造，模块式单元便于更换和维护。
镜板泵外循环系统示意图
导瓦轴承示意图（图中导瓦贴合面的竖形开孔为油流通道）
内循环、外循环冷却系统的优、缺点：
常见三种循环方式的特点及应用：
备注1：导瓦泵和镜板泵的损耗，经常被业主容易忽略。损耗其实是不可避免的，只是未能直接体现出来，但其本质是消耗了水力功率或电动机功率。
备注2：需关注低速时的压头和流量。
来源：抽水蓄能与储能技术交流
（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\jzbearing.com\application\views\news\knowledgePage.php
Line: 45
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 45
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 45
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 45
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 45
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.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\jzbearing.com\application\views\news\knowledgePage.php
Line: 45
Function: lang
File: D:\wwwroot\jzbearing.com\application\controllers\news.php
Line: 248
Function: view
File: D:\wwwroot\jzbearing.com\index.php
Line: 315
Function: require_once
Hangzhou Jingzhou Bearing Co.,Ltd.
Address：Liangzhu Indystrial City Hangzhou
Service hotline：0571-88777186 88777665
Jiangsu Jingzhou Bearing Co., Ltd.
Address：No.19, Yulan Avenue, Xuyi Economic DevelopmentZone, Huai’an City, Jiangsu Province
Service hotline：0517-80817777
Website：www.jzbearing.com
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