How to calculate the diameter of the inlet pipe of the bursting disc?
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The installation and selection requirements for HGT20570 bursting discs should be short and straight, and the pipe diameter should not be less than the nominal diameter on the bursting disc. How to calculate the diameter of the inlet pipe? The diameter of the pipe coming out of the kettle of my unit is relatively small. When connecting the bursting disc, use two flanges at the entrance and an amplifying tube in the middle to make a connecting pipe. Can I ask who* * Do you know if this meets the above requirements?
What are the requirements for storing hydrogen peroxide and what conditions need to be met? Can any sea friend give the answer?
35% hydrogen peroxide has strong oxidizing properties. Mixing with trace impurities, or being heated or shaken may cause combustion or explosion. Its liquids and gases are corrosive to human skin, eyes and lungs. Must be stored in a clean, cool and ventilated place. Temporary storage areas must not be covered with transparent plastic tiles to avoid direct sunlight, and should be surrounded by enclosures. Fire-fighting equipment consists of spraying mist water and carbon dioxide. The workplace should have pressurized running water for skin flushing, a basin and boric acid water for eye cleaning.
The outlet of the bursting disc can be enlarged, but cannot be reduced. The main reason is that the bursting moment of the bursting disc produces a large air flow and cannot be suppressed.
1. According to Article 145 of the Regulations: “The discharge capacity of the safety valve and bursting disc must be greater than or equal to the safe discharge capacity of the pressure vessel. ”Therefore, you should first calculate the safe discharge capacity of the container, check whether the corresponding pipe diameter on the kettle is appropriate, and then select the specifications of the bursting disc. 2. Regarding the calculation of bursting discs, please refer to the design calculation of safety valves and bursting discs in Annex 5 of the Capacity Regulations. For reference!
The poster said that the diameter of the pipe coming out of the kettle is relatively small. When connecting the bursting disc, two flanges are used at the entrance and an amplifying tube is used in the middle to form a connecting pipe. This does not meet the requirements.
Agree with the point above. There is definitely something wrong with the use of bursting discs that the poster mentioned. The use of bursting discs in this way is entirely for coping. If a safety accident occurs, it is not that the discharge capacity of the bursting disc is insufficient, but that the small-diameter pipe at the front end has insufficient flow capacity, which completely fails to achieve the purpose of safe discharge. It is recommended that your organization make rectifications promptly. Very dangerous...
Safety books with lots of information on explosions, combustion and explosions
Mainly considering the issue of leakage volume, the pipe diameter must be larger than or equal to the diameter of the bursting disc. If it is smaller than the diameter of the bursting disc, it will be very dangerous.
The poster paid too much attention to the blasting disc and ignored the requirements for the explosion vent. The diameter of the explosion vent was specified in HGT20570. I suggest you study it carefully.* one time! In addition, the installation method mentioned by the poster is definitely wrong, because whether the diameter of the pipe below or above the bursting disc is smaller than the diameter of the bursting disc, it will affect the normal pressure relief amount.
There have been related discussions on the hydrogen peroxide forum. You can go to the address below and have a look. You should be able to find the answer.: http://bbs.hcbbs.com/viewthread.php?tid=429306
Of course it does not meet the requirements. The bottleneck area for exports is already smaller than the requirements. What’s the point of making it bigger?