球阀简介
2020-01-29
球阀可分以下系列:
固定球阀(二片式,三片式)
球阀的球体是固定的,受压后不产生移动。固定球球阀都带有浮动阀座,受介质压力后,阀座产生移动,使密封圈紧压在球体上,以保证密封。通常在与球体的上、下轴上装有轴承,操作扭距小,适用于高压和大口径的阀门。
为了减少球阀的操作扭矩和增加密封的可靠程度,近年来又出现了油封球阀,既在密封面间压注特制的润滑油,以形成一层油膜,即增强了密封性,又减少了操作扭矩,更适用高压大口径的球阀。
浮动球阀(一片式,二片式)
球阀的球体是浮动的,在介质压力作用下,球体能产生一定的位移并紧压在出口端的密封面上,保证出口端密封。
浮动球球阀的结构简单,密封性好,但球体承受工作介质的载荷全部传给了出口密封圈,因此要考虑密封圈材料能否经受得住球体介质的工作载荷,在受到较高压力冲击时,球体可能会发生偏移。这种结构,一般用于中低压球阀。
V型球阀
这种球阀属于固定球阀,也是单阀座密封球阀,调节性能好,流量特性是等百分比的,可调比达200:1。它的V型切口与金属阀座之间具有剪切作用,特别适合含纤维、微小固体颗粒、料浆等介质。
三通球阀(分为T型和L型)
三通球阀有T型和L型。T型能使三条正交的管道相互联通和切断第三条通道,起分流、合流作用。L型只能连接相互正交的两条管道,不能同时保持第三条管道的相互连通,只起分配作用。
固定球阀(二片式,三片式)
球阀的球体是固定的,受压后不产生移动。固定球球阀都带有浮动阀座,受介质压力后,阀座产生移动,使密封圈紧压在球体上,以保证密封。通常在与球体的上、下轴上装有轴承,操作扭距小,适用于高压和大口径的阀门。
为了减少球阀的操作扭矩和增加密封的可靠程度,近年来又出现了油封球阀,既在密封面间压注特制的润滑油,以形成一层油膜,即增强了密封性,又减少了操作扭矩,更适用高压大口径的球阀。
浮动球阀(一片式,二片式)
球阀的球体是浮动的,在介质压力作用下,球体能产生一定的位移并紧压在出口端的密封面上,保证出口端密封。
浮动球球阀的结构简单,密封性好,但球体承受工作介质的载荷全部传给了出口密封圈,因此要考虑密封圈材料能否经受得住球体介质的工作载荷,在受到较高压力冲击时,球体可能会发生偏移。这种结构,一般用于中低压球阀。
V型球阀
这种球阀属于固定球阀,也是单阀座密封球阀,调节性能好,流量特性是等百分比的,可调比达200:1。它的V型切口与金属阀座之间具有剪切作用,特别适合含纤维、微小固体颗粒、料浆等介质。
三通球阀(分为T型和L型)
三通球阀有T型和L型。T型能使三条正交的管道相互联通和切断第三条通道,起分流、合流作用。L型只能连接相互正交的两条管道,不能同时保持第三条管道的相互连通,只起分配作用。
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基本
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流程
错误
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调试
- 请求信息 : 2024-11-24 02:35:38 HTTP/1.1 GET : finpa.com.cn/a/231.html
- 运行时间 : 0.104680s [ 吞吐率:9.55req/s ] 内存消耗:4,364.53kb 文件加载:140
- 查询信息 : 10 queries 1 writes
- 缓存信息 : 4 reads,1 writes
- 配置加载 : 73
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- [ BEHAVIOR ] Run Closure @app_init [ RunTime:0.000029s ]
- [ CACHE ] INIT File
- [ BEHAVIOR ] Run \addons\cms\Cms @app_init [ RunTime:0.002561s ]
- [ BEHAVIOR ] Run Closure @app_init [ RunTime:0.002593s ]
- [ LANG ] C:\wwwroot\finpa.com.cn\thinkphp\lang\zh-cn.php
- [ ROUTE ] array ( 'type' => 'method', 'method' => array ( 0 => '\\think\\addons\\Route', 1 => 'execute', ), 'var' => array ( 'addon' => 'cms', 'controller' => 'archives', 'action' => 'index', ), )
- [ HEADER ] array ( 'content-type' => '', 'content-length' => '0', 'x-original-url' => '/a/231.html', 'user-agent' => 'Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)', 'host' => 'finpa.com.cn', 'accept-encoding' => 'gzip, br, zstd, deflate', 'accept' => '*/*', )
- [ PARAM ] array ( 'diyname' => '231', )
- [ RUN ] think\addons\Route->execute[ C:\wwwroot\finpa.com.cn\vendor\karsonzhang\fastadmin-addons\src\addons\Route.php ]
- [ LANG ] C:\wwwroot\finpa.com.cn/application/common\lang\zh-cn\addon.php
- [ BEHAVIOR ] Run app\common\behavior\Common @addon_begin [ RunTime:0.002253s ]
- [ LANG ] C:\wwwroot\finpa.com.cn\addons\cms\lang\zh-cn.php
- [ DB ] INIT mysql
- [ VIEW ] C:\wwwroot\finpa.com.cn\addons\cms\view\default\show_news.html [ array ( 0 => 'config', 1 => 'user', 2 => 'site', 3 => '__CHANNEL__', 4 => '__ARCHIVES__', ) ]
- [ BEHAVIOR ] Run \addons\cms\Cms @response_send [ RunTime:0.000136s ]
- [ DB ] CONNECT:[ UseTime:0.001467s ] mysql:host=localhost;port=3306;dbname=finpa;charset=utf8
- [ SQL ] SHOW COLUMNS FROM `fa_cms_channel` [ RunTime:0.007429s ]
- [ SQL ] SHOW COLUMNS FROM `fa_cms_archives` [ RunTime:0.010368s ]
- [ SQL ] SELECT * FROM `fa_cms_archives` WHERE `id` = 231 LIMIT 1 [ RunTime:0.000559s ]
- [ SQL ] SELECT `id`,`name`,`image`,`diyname`,`items` FROM `fa_cms_channel` WHERE `id` = 11 [ RunTime:0.000316s ]
- [ SQL ] SELECT * FROM `fa_cms_channel` WHERE `id` = 11 LIMIT 1 [ RunTime:0.000275s ]
- [ SQL ] SHOW COLUMNS FROM `fa_cms_model` [ RunTime:0.005096s ]
- [ SQL ] SHOW COLUMNS FROM `fa_cms_addonnews` [ RunTime:0.004338s ]
- [ SQL ] SELECT * FROM `fa_cms_addonnews` WHERE `id` = 231 LIMIT 1 [ RunTime:0.000236s ]
- [ SQL ] UPDATE `fa_cms_archives` SET `views`=`views`+1 WHERE `id` = 231 [ RunTime:0.002190s ]
- [ SQL ] SELECT * FROM `fa_cms_archives` WHERE `id` < 231 AND `status` = 'normal' AND `channel_id` IN (11) ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000668s ]
- [ SQL ] SELECT * FROM `fa_cms_archives` WHERE `id` > 231 AND `status` = 'normal' AND `channel_id` IN (11) ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000726s ]
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