Anti-spray rain cap

Abstract

The invention provides an anti-spray rain cap, which is arranged on the safety valve of an outdoor pressure vessel, and includes an umbrella cap, a movable cylinder connected to the umbrella cap through a support frame, and a fixed cylinder covered on the movable cylinder. The upper part of the cylinder wall of the fixed cylinder is provided with a blowout prevention pin, and the movable cylinder is provided with an opening matching the said blowout prevention pin, and the blowout prevention pin can pass through the opening when the movable cylinder is loaded into the fixed cylinder. The anti-spray rain cap provided by the present invention can block rain and snow to prevent the safety valve from being corroded or frozen, avoiding the safety valve from being affected by external weather, and can prevent the rain cap from being damaged when the safety valve automatically releases pressure. The medium flushed out by high pressure is taken away together.

Description

technical field [0001] The invention relates to the technical field of outdoor pressure vessel protection, in particular to an anti-spray rain cap. Background technique [0002] Outdoor pressure vessels are common equipment in major oil fields and industrial and mining enterprises in my country. In order to ensure their safe operation, safety valves are installed on the outside of the pressure vessels. The purpose is to automatically release the pressure when there are production problems or the pressure is too high. However, the accidents that the safety valve of the pressure vessel located outdoors cannot be opened in time due to high pressure are not uncommon. The main reasons for the failure of the safety valve of the pressure vessel to open and cause lame pressure accidents include: [0003] 1. At present, the pressure vessels used by major oil fields and industrial and mining enterprises in my country are equipped with safety valves to ensure their safe production. Mos...

AI Technical Summary

Problems solved by technology

[0003] 1. At present, the pressure vessels used by major oil fields and industrial and mining enterprises in my country are equipped with safety valves to ensure their safe production. Most of the pressure vessels are installed in outdoor exposure places, and the direction of the outlet pipe of the safety valve is first horizontal and then In bad weather, rain and snow can easily enter, causing corrosion or freezing between the safety valve core and valve seat. If the pressure exceeds the limit pressure, the safety valve cannot be opened in time, causing hidden dangers in production safety

[0004] 2. When the safety valve is opened, due to the high pressure, the rain-shielding facilities outside the safety valve are washed out together when the high-pressure medium impacts. After the pressure is normal, if it is not found in time, the safety valve will continue to be exposed outdoors, causing corrosion Or freeze, causing safety hazards

Images