HH法兰直装差压液位计_三阀组开关实用特点压力仪表制造厂家
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HH法兰直装差压液位计_三阀组开关实用特点
信息来源: 华恒技术:029-81488663 | 2021-01-18 点击量: 753

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  The three valve group is to connect or cut off the positive and negative pressure chambers of the differential pressure transmitter with the pressure pipe, or to cut off or conduct the positive and negative pressure chambers. In order to equalize the pressure, the positive and negative pressure chambers are protected from too much pressure. The three valve group consists of valve body, two stop valves and one balance valve. In fact, the three valve group is widely used as a common valve.


The opening sequence of the three valve group is: opening the positive pressure valve, closing the balance valve and opening the negative pressure valve. The sequence of shutdown is as follows: close negative pressure valve, open balance valve and close positive pressure valve

HH法兰直装差压液位计_三阀组开关实用打开的顺序步骤
上一篇我们就安装仪表接头的方法 做了详细介绍和说明。 本篇文章我们简单的对 HH法兰直装差压液位计_三阀组开关实用打开的顺序步骤 进行描述,作为专业的截止阀,HH法兰直装差压液位计_三阀组开关实用,仪表接头生产厂家,让你了解更多HH法兰直装差压液位计_三阀组开关实用打开的顺序步骤,
    HH法兰直装差压液位计_三阀组开关实用是将差压变送器的正负压室与导压管导通或切断,或将正负压室切断或导通。为了均压,保护正负压室不受太大的压力。HH法兰直装差压液位计_三阀组开关实用由阀体、二个截止阀及一个平衡阀组成。 HH法兰直装差压液位计_三阀组开关实用其实应用非常广泛,是阀门的一种常用阀门。


     HH法兰直装差压液位计_三阀组开关实用打开的顺序为:打开正压阀、关闭平衡阀、打开负压阀。停运的顺序为:关闭负压阀、打开平衡阀、关闭正压阀。

差压变送器使用中应注意以下三点:
(1)差压变送器在使用前必须对其测量范围、零点、漂移量、精度、静压误差等进行复核;
(2)差压变送器安装后,开车之前还需检查一次各种变送器的工作压力、工作温度、测量范围、漂移量等。看是否和实际情况相符,若有不符之处,则必须查明原因并纠正后才能开车。

(3)开启和停用时,应避免差压变送器承受单向受压,对每台差压变送器应附带一套三组阀件,通常把三组阀安装在差压变送器的上方,其中阀1和阀3分别为高压和低压切断阀,阀2为平衡阀,平衡阀2在开表和停表时,用以保护差压变送器和便于调零位。在开启差压变送器时,应先打开平衡阀2,然后再打开阀1和阀3,当阀1和阀3全部打开后,再关闭阀2。在停用差压变送器时,也应先打开平衡阀2,然后再关闭阀1和阀3。按以上顺序开启和停用差压变送器,可以避免差压变送器承受单向静压而过载。对于有冷凝胶或隔离液的差压变送器,也可以避免冷凝胶或隔离液被冲跑。

HH法兰直装差压液位计_三阀组开关实用特点

When the flow or differential pressure sensor instrument is connected to the process pipeline, the "three valve group" shall be used to:

1. When the medium is added into the pipeline from the initial state (empty), the pressure on both sides of the sensor will change suddenly. If the pressure difference is too large, the sensor of the transmitter may be damaged. To avoid this problem, close the valves a and B on both sides of the sensor and open the bypass valve C;

2. After the medium fills the pipe and approaches to stability and balance, open one of a or B to apply pressure evenly on both sides of the sensor;

3. Close valve C and open another valve in a or B, and the sensor starts to work normally;

4. The closing sequence is the reverse of the above.

In addition,

The 3-valve manifold has other functions, such as cleaning the pipeline after running for a period of time, and the sensor part is not affected (the pipeline is bypassed).

HH法兰直装差压液位计_三阀组开关实用特点

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