|Place of Origin:||CHINA|
|Minimum Order Quantity:||1 unit|
|Price:||Customized Product, Quoted Case By Case|
|Packaging Details:||Seaworthy packing|
|Delivery Time:||3~6 months|
|Payment Terms:||L/C, T/T|
|Fuction:||Pressure Reliefing||Advantage:||No Debris, Easy To Rest, High Accuracy|
|Material:||Stainless Steel||Warranty Period:||12 Months Since Operation Or 18 Months Since Delivery|
pressure relieving devices,
pressure safety relief valve
High Reflief Accuracy ARBPO Pressure Relief Device For Reliable Overpressure Protection
ARBPO Pressure Relief Device
ARBPO type Buckling Pin Pressure Relief Device, a patent product recently developed by SMDERI, is a kind of over pressure protection device to be used in petrochemical industries, offshore platforms and etc., which is a type of non-reclosing pressure relief device.
I Work principle
The static pressure or pressure drop at the valve inlet drives the pressure sustained buckling pin to bend and trigger the valve open promptly in order to release the system pressure.
Initial status: The valve disk contacts the valve seat and they are sealed with a seal. The buckling pin is installed between the valve cap and valve rod. The buckling pin exerts a force to the valve rod in return, which is transferred to the valve disc and strengthens the sealing accordingly.
Normal operation status: The upstream medium gas flows into the sealed system. When the gas pressure is less than the set pressure, so the load on the pin transferred through the rod is less than the critical load for buckling. Therefore, the buckling pin remains straight and the disk & the seat are still tightly sealed. The valve is now sealed and stable.
Relief status: As the medium gas pressure increases and reaches the set value, the load exerted on the pin through the valve rod approaches the critical load. As long as it reaches the yield point of the buckling pin, the pin buckles in milliseconds, and thus reduces the length in valve rod direction significantly. Meanwhile the valve disc leaves the valve seat quickly and the valve opens. Once the valve is open, the medium inlet and outlet are connected and the high pressure media gas is released instantaneously.
When the valve opens, the operator can determine whether the pressure relief takes place or not by observing the valve appearance; or the position switch mounted to corresponding position transmits the pressure relief signal to the remote control room and informs the operator about the valve position.
|Equipment||ARBP Pressure Relief Device|
|1” – 36”|
|Fabrication standard||ASME BPV VIII|
|Design standard||ASME BPV VIII, SH3009-2013|
|Design pressure||1 – 725psi|
|Design temperature||-150℃ - 300℃|
|Pressure class||CL150- CL600|
|Set pressure||1 – 725psi|
|Set pressure tolerance||
5% (down to 3% upon request)
|Operation pressure ratio||up to 95%|
|Applicable medium||Gas media|
|Main interlocked alarms||Position switch|
|Type of connection||Flange|
|Type of seal||Hard seal|
--- High accuracy of the relief pressure: usually within±5%;
--- The bucking pin is not affected by the cyclic change of the pressure inside the pipeline;
--- The bucking pin is not exposed to the medium;
--- It is easy to judge if pressure relief takes place;
--- It is easy reset the valve with low cost for shut down;
--- No fragment is generated from the relief process;
--- Low operation cost on long term service.
China National Petroleum Corporation (CNPC)
China Petrochemical Corporation (Sinopec)
China National Offshore Oil Corporation (CNOOC)
Wanhua Chemicals Group Co., Ltd.
Xinpu Olefin (Taixing) Co., Ltd.