How should the gasket at the stage partition be designed?

This post was last edited by gn_1984 on 2019-1-9 at 10:29. Why can’t I upload pictures?

Take a look at what I’ve created; I hope it will be helpful to you. Many people have reported trouble sending pictures, so I’ll show everyone how to do it. https://bbs.hcbbs.com/thread-2249064-1-1.html (Source: Haichuan Chemical Industry Forum)

There was an error while uploading; I encountered this issue for a while, it got fixed later, but now I can’t upload again. It’s probably a problem with the forum server or some other issue.

Just try that a few more times with the topic; delete the previously uploaded drawings and upload them again. Usually, two or three attempts are enough when it doesn’t work. Good luck to you!

The depth of the partition groove in the tube box should be greater than the thickness of the gasket; it must be level with the annular sealing surface. Its width should be slightly larger than that of the gasket. If there are corners, a 45° angle is generally adopted. For specific details, refer to GB151, P25. Asbestos is usually used for gaskets; just provide a diagram so that the workshop can cut them according to it. Pay attention to the treatment of ends and corners; generally, splicing is not allowed. The gasket for the partition is different from a flange gasket; the pressure difference on either side of the partition is not very large, and its main function is to provide isolation, so this gasket does not require as many specifications. It has nothing to do with whether the equipment is high-voltage or not; it’s equivalent to the internal components.

Hello, as you mentioned: the depth of the partition groove in the tube box should be greater than the thickness of the gasket, and it is important that it be level with the annular sealing surface. If the gasket is 3 mm thick, then the depth of the partition groove is 4 mm; whereas the depth of the annular groove for the octagonal gasket is around 17–18 mm. How can these two depths be made equal? Thank you

For the source of the above statement, please refer to GB151, P25. Put it another way: the depth of the partition groove should be considered in relation to the depth of the sealing surfaces of the tube sheet flanges and the tube sheet itself.

https://bbs.hcbbs.com/thread-1856223-1-1.html Hello, I’m unable to upload images; I used a picture from my friend Dou Wan. Similar to this diagram, can the split diaphragm gasket be designed so that it is compressible only at the diaphragm groove, while those areas near the octagonal gasket serve no purpose and remain essentially in place? Please give some advice.

Regarding the statement that \"the sealing surface of the partition groove should be level with the annular sealing surface\" (GB151, P25), I suggest that lz take a look at Figure 6-17 in the standard. Pay attention to the dashed lines in the figure; they represent the gasket, while the solid line indicates the partition groove. The arc outside it represents the outer edge of the tube sheet

Judging from the pictures in Douwan’s post, his device does not have partitions, so there is no issue with partition slots, nor any problem related to the fit between the partition slot and the flange surface of the tube box. Don’t be misled; first look at the standard Figure 6-17