当前位置:意赛德(天津)自动化仪器有限公司>>布莱迪BLD>>布莱迪压力表>> 布莱迪 SF6气体密度表SF6气体密度控制器简介布莱迪 SF6气体密度表SF6气体密度控制器简介
布莱迪 SF6气体密度表SF6气体密度控制器简介
SF6 气体密度表和YM / YWM / YXM SF6 气体密度控制器简介 |
SF6 气体应用 SF6 密度表原理与应用 在用“表盘上带T-P曲线”的密度表对容器内SF6气体密度进行监视时,应首先测试环境温度,然后找出环境温度半圆线与指针的相交点A,若相交点A在绿色区域内,则表明器内SF6气体密度在规定的范围内;若相交点在红色区域内,则表明器内SF6气体密度低于规定的范围,应当补气或检查容器是否有泄漏发生。 SF6 densimeter principle & intended The SF6 densimeter made of BRIGHT has three big series products :"YM (M1)" T-P curve monitor; "YM (M2)" temperature compensation monitor, "YXM (M3)" temperature compensation with control device. "YM (M1)" the T-P curve monitor seriesdensimeter principle and service intended Under the fixed working pressure, a curve on the dial plate shows the SF6 temperature- pressure comparison situation to let the people conveniently and direct-viewing monitors the SF6 gas density situation from the dial plate. In the ordinary circumstances, the dial plate is composed by 3 T-P curves, they are "the left curve", "center the curve", "the right curve" from left to right,"the left curve" and "the right curve" divides the dial plate into 3 regions, "left curve" left side for red region, "left curve" and "right curve" between for green region,"right curve" right side for yellow region (as chart). When using the densimeter " with T-P curve on the dial plate" , you should read the thermometer nearby the densimeter to find out the ambient temperature, then find the point of intersection A of the ambient temperature half-circle line and the pointer, if A is in green region, then the SF6 gas density is in stipulation scope; If A is in red region, then the SF6 gas density is lower than the stipulation scope, it is necessary to restore vital energy or inspect the vessel whether has divulges occurs. “YWM (M2)”温度补偿监测密度表的原理与应用 “带温度补偿装置”密度表是在原压力仪表结构上,加装温度补偿装置所组成。是一种不用考虑环境温度的变化(即不用查看温度计),也不用查看“对照表”,而是直接从密度表的读数就可以判断出容器内的SF6 气体的密度是否在规定的范围内。 工作原理是:当环境温度上升时,虽然容器内SF6气体的密度未发生变化但其压力增大,带动指针顺时方向转动,而当温度上升时,双金属补偿装置的“U形”口张大,则推动指针向逆时针方向转动,当两种运动引起表针的偏转量相抵销时,无论环境温度如何变化,指针都不会发生偏转。反之,当环境温度下降时,虽然容器内SF6 气体的密度未发生变化但其压力减小,带动指针向逆时方向转动,而当温度下降时,双金属补偿装置的“U 形”口缩小,则推动指针向顺时针方向转动,当两种可运动个起表针的偏转量相抵销时,无论环境温度如何变化,指针都不会发生偏转。所以只要容器内SF6 气体不发生泄漏,其密度不变化。仪表的示值就不变。从而达到测量和监视其密度的作用。其使用方法是:在20℃的环境温度下,将容器内的SF6气体充至额定工作压力(P额),在每日的规定监测时间进行监测时,只要密度表的指针指向额定工作压力即为正常状态。 "YWM (M2)" temperature compensation monitor series densimeter principle and service intended The densimeter "with temperature compensation "installs the temperature compensation in the initial pressure measuring structure. It does not need to consider ambient temperature change ( not need to see the thermometer), also does not need to look over "the comparative table", but is directly judge the SF6 gas density whether in stipulation scope. The principle of work is: When ambient temperature rises, the pressure of the SF6 gas increases, drives the indicator along the clockwise rotation, but at the same time, the mouth of the bimetal compensation system "the U shape" publicizes, then impels the indicator to the counter clockwise rotation, when two kind of strength be equilibrium, the ambient temperature change cannot made the indicator deflection. Otherwise, When ambient temperature falls, the pressure of the SF6 gas decreases, drives the indicator counter the clockwise rotation, but at the same time, the mouth of the bimetal compensation system "the U shape" reduces, then impels the indicator to along the clockwise rotation, when two kind of strength be equilibrium, the ambient temperature change cannot made the indicator deflection. So the SF6 gas does not occur divulges, its density does not change. Although pressure in the vessel changes along with the ambient temperature change, under the function of the bimetal piece "temperature compensation installment", the densimeter indicator cannot have deflection. Thus the SF6 density value in the vessel is really reflected. Its application method is: ambient temperature under 20 ℃, fill the SF6 gas to the fixed working pressure (P ), Monitor at regulate time daily, it is normal while the indicator pointing the fixed working pressure. YXM(M3)温度补偿加控制装置的密度控制器 当“YXM (M3)”型SF6 气体密度控制器接入密闭系统后,向系统设备中充入SF6 气体,当SF6 气体密度达到规定值时,密度控制器的指针指向额定工作压力。当工作环境温度发生变化时,虽然SF6 气体的密度并没有发生变化,但SF6 气体的压力将随着温度的变化而改变,密度控制器上的指针本应随压力的改变而发生偏转,此时通过控制器内部的温度补偿装置对SF6气体压力的变化进行补偿,使指针不发生偏转。只有在系统中SF6气体发生泄漏,造成密度下降时,SF6气体密度控制器的指针才发生偏转,从而起到对系统设备中SF6 气体密度的监测作用。 SF6气体密度控制器,通常配置两个设定开关点Ps1和Ps2,设定点Ps1为报警点,设定点Ps2为闭锁点。一旦系统发生SF6 气体泄漏时,随着SF6 气体密度降低,指针上的触头(动触头)与设定开关点Ps1 上的触头(定触头)接触时则发出报警信号;随着密度继续下降,当指针触头与设定点Ps2上的触头接触时,则发出闭锁信号,自动关闭断路器开关,使之不能工作,防止事故的发生。 YXM (M3) temperature compensation withcontrol device density controller "YXM (M3)" SF6 density controller has installed electric contact device based on the "M2"densimeter. The two contact points is warning point and closedown point. So SF6 density controller can not only monitor but also warn and close automatically. When SF6 gas divulges, internal pressure reduces along with the density of SF6 gas reducing, causes the indicator contact (move touch) with the lower limit point (fixed touch) to send out the alarm, continues along with the density of SF6 gas reducing, the pressure continues to drop, when on the indicator contact (move touch) with the closedown point (fixed touch) to shut-off circuit breaker switch automatically, to prevented the accident occurred. SF6 气体密度表YM / YWM / YXM |
意赛德(天津)自动化仪器有限公司
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意赛德(天津)自动化仪器有限公司是国内外享有盛名的压力、温度、液位、流量仪表的专业制造商、供应商,主营产品为EXCEED意赛德品牌的压力变送器、热电偶、热电阻、双金属温度计、磁翻板液位计、液位变送器、流量计、阀门及自动化系统工程设备,美国的SIGHTO赛途压力表(原布莱迪仪表)、压力传感器、密度开关、化学密封等产品;并且是世界*的仪器仪表品牌的一级*代理商,主要代理:美国ASHCROFT雅斯科压力表、压力开关、压力变送器,德国菲索AFRISO压力、温度、液位传感器等仪器仪表,德国ADZ-NAGANO压力、温度传感器,美国罗斯蒙特智能变送器,EJA智能变送器等,美国SOR、UE、文特斯电厂压力开关,日本藤仓精密气缸、精密调压阀等。
本公司凭着专业的技术力量,雄厚的资金实力,大量的现货供应,优秀的服务团队,在国内建立了优质的网络,现有国内外客户3000余家,部分产出口东南亚国家及返销回欧洲市场,本着“严谨、务实、高效、创新”的企业精神、诚实守信的企业经营理念,不断为客户创造更高的价值。
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德国菲索AFRISO:压力、温度、液位
美国雅斯科ASHCROFT:开关、传感器、温度
德国海德汉HEIDENHAIN:编码器、光栅尺
美国SOR:压力、液位开关
德国易福门:压力传感器、控制器
加拿大WINTERS:压力、温度传感器
德国SICK:接近开关、编码器
日本山武产品
旭计器工业产品
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