什么是盲法兰？

盲法兰是用于阻挡管道或创建停止的固体磁盘。

Similar to a regular flange, a blind flange has mounting holes around the perimeter and the gasket sealing rings are machined into the mating surface. The difference is that a blind flange has no opening for fluids to pass through. Instead, it is placed in between two open flanges, which stops the flow through a pipe. Many times this type of blockade is used when adding another line onto an existing pipeline or when a new valve is being added.

Often a blind flange is inserted into a pipeline when a repair is required further up the line. This allows the flanges down stream to be disconnected without fear of losing liquid. Many times this type of blockade is used when adding another line onto an existing pipeline or when a new valve is being added. This blockade is also used to shut down a line when it is no longer needed.

Without the blind flange it would be difficult to perform maintenance or repairs on a pipeline. The flow would need to be shut off at the nearest valve, which could be miles away from the repair area. Valves are also very expensive and are prone to sticking. The blind flange is a much more cost efficient way of sealing a pipe.

When a pipeline is being constructed, a blind flange is often incorporated into the final length of pipe. This design allows for expansion or continuation of the pipeline by simply adding onto the final flange. This holds true for the addition of tees in the pipeline as well. A tee can be installed and then blocked in order to leave the option of running a pipe at a later date.

The use of flanged pipe has allowed pipelines to be built in a much faster manner than traditional welded seam pipelines. Moreover, it has made the task of repair and sectional replacement a simpler job. Sections of pipe can now be assembled anywhere in the world and shipped to the job site. Once there, they can simply be bolted into place and the pipeline can resume transportation of its liquid cargo.

1.Blind flange2. Stud Bolt 3. Gasket 4. Other flange

标准, Dimensions & Weight ofBlind flanges

• ASME/ANSI B16.5 Class 150 BL
• ASME/ANSI B16.5 Class 300 BL
• ASME/ANSI B16.5 Class 600 BL
• ASME/ANSI B16.5 Class 900 BL

• ASME/ANSI B16.5 Class 1500 BL
• ASME / ANSI B16.5等级2500 BL
• DIN 2527 PN10.
• DIN 2527 PN16

• ASME B16.47 Series A/MSS SP-44 Class 150 BL
• ASME B16.47 Series A/MSS SP-44 Class 300 BL
• ASME B16.47 Series A/MSS SP-44 Class 600 BL
• ASME B16.47 Series A/MSS SP-44 Class 900 BL
• ASME B16.47系列B / API 605级75 BL
• ASME B16.47 Series B/API 605 Class 150 BL
• ASME B16.47 Series B/API 605 Class 300 BL
• ASME B16.47 Series B/API 605 Class 600 BL
• ASME B16.47 Series B/API 605 Class 900 BL

Where are Blind Flanges Most Commonly Used?

盲法兰通常用于石化，管道工程，公共服务和水厂。

盲法兰可用于将管道进行修理，进一步向上。事实上，在建造管道期间，盲法兰可以内置在管道的最终长度中。这允许简单地通过添加到最终法兰上的膨胀或延续管道。

盲法兰做什么？

BLIND FLANGE INCREATE A STOP

盲法兰可用于将管道进行修理，进一步向上。事实上，在建造管道期间，盲法兰可以内置在管道的最终长度中。这允许简单地通过添加到最终法兰上的膨胀或延续管道。

BLIND FLANGE INBLOCK OFF A PIPELINE

如果没有盲法兰，除非在早期的阀门关闭流动，否则将不可能修复或对管道进行持续维护，这将是不可能的或对管道进行持续维护。

使用法兰管的使用显着加快了构建管道的过程。它还使维修和分区更换的任务更容易。管道现在可以在世界上的任何地方组装并运送到就业站点。一旦那里，它们可以简单地用螺栓固定到位并完成修复。