Safety device for bursting disc
Pressure relief device composed of bursting disc (or bursting disc component) and clamping device (or supporting ring) and other parts. When the pressure difference between the two sides of the blasting piece reaches the preset value, the immediate action of the bursting disc (breaking or shedding), and the discharge of the fluid medium.
Brief introduction of bursting disc
It can burst under the specified temperature and pressure.
The bursting disc device is composed of two parts of the bursting disc and the holder.
Bursting disc: a pressure sensitive element in a bursting disc device, which acts as a result of overpressure.
Clamping device: the bursting disc device, with positioning, support, sealing and other functions, and to ensure that the independent clamping parts of the bursting disc accurate action.
Bursting disc safety device has the advantages of simple structure, high sensitivity, accuracy, no leakage, discharge capacity and so on. It can work reliably in the thick, high temperature, low temperature and corrosion environment, and it is also an ideal safety device for the ultrahigh pressure vessel.
Blasting sheet is an important safety device to prevent overpressure damage of pressure equipment, widely used in chemical, petroleum, light industry, metallurgy, nuclear power, dust, fire, aviation and other industrial sectors.
Bursting disc features
(1) for slurry, viscous and corrosive process media, the safety valve does not work in this case
(2) the inertia is small, can quickly respond to the rapid increase in pressure
(3) in the case of fire or other accidents, when the main pressure relief device is opened, it can be used as an additional pressure relief device.
(4) tight and no leakage, suitable for the pressure vessels containing expensive or toxic medium
(5) specifications and models, available in various materials manufacturing, strong adaptability
(6) easy maintenance and replacement
Two, blasting piece working principle
The action principle of the bursting disc, the pressure sensitive element of the bursting disc is a metal or nonmetal sheet, which is a weak point of the equipment. Under the normal working pressure, the bursting disc is fixed by the matched clamping device, and the device is clamped in a forced sealing point of the equipment, so that the equipment is in a sealed state. When the pressure and the pressure rise to the blasting design of blasting pressure equipment, blasting blasting action immediately, rupture or shedding of metal or non metal sheets, equipment for overpressure in the medium with a discharge channel. After blasting, the discharge caliber can not be closed until the discharge is complete, at this time to replace the new bursting disc, in order to make the equipment back to the closed state.
Bursting disc device is a pressure relief device can not be repeated closed, start by static pressure at the entrance, through the rupture of membrane to discharge pressure.
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