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    工业用安全栅的作用和重要性

    日期:2019-07-02 09:09
    安全栅是介于现场设备与控制室设备之间的一个限能电路,用来把控制室供给现场仪表的电能量限制在既不能产生足以引爆危险气体的火花,又不能产生足以引爆危险气体的仪表表面温度,从而消除了引爆源。在选择安全栅时必须考虑其型号与现场仪表类型相适应,还须考虑安全栅与本质安全仪表要求相兼容及形成的本安系统中阻抗匹配的问题。
     
    安全栅作用:也就是安全保持器,有的也把它叫做安全限能器,它主要是用在本安系统中的,有着很大的作用。它能够将危险信号进行转移,在相关行业中有着其不可或缺的地位。下面我们给大家介绍一下有关安全栅的产品信息:安全栅是本安回路中的安全接口,它能够让信号在安全区和危险区进行传递,并且引导信号的传递,一般是安装在本安回路或者是非本安的回路中的。所谓本安防爆系统主要是指安装在安全场所中的,本安与非本安的电气设备之间相连的设备。安全栅就在本安系统中占用了很重要的地位,它的性能是很好的。因为安全栅在设计的时候主要是介于现场设备和控制室的设备之间的,所以不论是控制室里的设备处在什么样的状态中,即使是在故障状态,它也能保证传递出来的信号是安全的。
     
    隔离式安全栅是安全栅中最常见的一种类型,它的设计和制作是能够满足本安系统的要求的,虽然说这种安全栅相比起齐纳式的安全栅更贵一些,但是它的性能却是很好的,能够为用户带来很多的好处。
     
    隔离式安全栅由于隔离式安全栅采用了限压、限流、隔离等措施,不仅能防止危险能量从本安端子进入危险现场,提高系统的本安防爆性能,而且还增加了系统的抗干扰能力,大大提高了系统运行的可靠性。 24VDC 电源经DC-AC-DC变换后,输出模块电路所需要的多种电压。

    Safety grating is an energy limiting circuit between the field equipment and the control room equipment. It is used to limit the electric energy supplied by the control room to the field instrument. It can neither produce enough sparks to detonate dangerous gases nor generate enough surface temperature to detonate dangerous gases, thus eliminating the source of detonation. When choosing safety grate, we must consider the compatibility between safety grate and intrinsic safety instrument and the impedance matching in intrinsic safety system.
     
    Safety grating function: that is, safety retainer, or safety limiter, which is mainly used in intrinsic safety system, has a great role. It can transfer dangerous signals and plays an indispensable role in related industries. Next, we will introduce the product information about safety grids: safety grids are the safety interface in the safety circuit, which can let the signal be transmitted in the safety zone and dangerous zone, and guide the signal transmission, usually installed in the intrinsic safety circuit or non-intrinsic safety circuit. The so-called intrinsically safe explosion-proof system mainly refers to the equipment installed in a safe place and connected between intrinsically safe and non-intrinsically safe electrical equipment. Safety grid occupies a very important position in intrinsic safety system, and its performance is very good. Because the safety grate is mainly designed between the field equipment and the control room equipment, no matter what state the equipment in the control room is in, even in the failure state, it can ensure that the signal transmitted is safe.
     
    Isolated safety grille is the most common type of safety grille. Its design and fabrication can meet the requirements of intrinsic safety system. Although this kind of safety grille is more expensive than Zener type safety grille, its performance is very good, and it can bring many benefits to users.
     
    Isolated safety grids not only prevent dangerous energy from intrinsically safe terminals into dangerous sites, but also improve the intrinsically safe explosion-proof performance of the system, and increase the anti-interference ability of the system, which greatly improves the reliability of the system operation. After the 24 VDC power supply is converted by DC-AC-DC, it can output various voltages required by the module circuit.

    安全栅问题相关资讯
    隔离栅和安全栅哪个好?2019-07-18 安全栅和隔离器产品本身的安全性2019-07-18
    安全栅在工控行业有哪些用途?2019-07-18 安全栅故障实例解析2019-07-18
    现场总线在石化行业总的应用设计2019-07-18 本安安全栅防爆技术的原理2019-07-17
    安全栅在本安系统中起到什么作用?2019-07-17 安全栅有哪些常见分类以及有什么作用2019-07-17
    信号隔离器、安全栅和电涌保护器在功能和用途2019-07-16 齐纳安全栅使用注意事项2019-07-02

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