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The basic concept definition of bursting disc
:
Bursting disc safety device (bursting disc
+
holder)
: consists of bursting disc and clamping device The non-reclosing device is a pressure relief device composed of parts such as the regulator.
Bursting disc
: It is a pressure sensitive component that acts quickly due to overpressure. (To put it bluntly, it is a protective device used to relieve pressure to prevent explosion due to excessive pressure.)
Gripper
: The function of the gripper is to provide a safe release amount equivalent to the container. The periphery of the explosion bursting disc at the outlet of the medium discharge pipe is tightly clamped and tightly sealed to match the bursting disc components so that the pressure can be relieved within the calibrated bursting disc pressure. Generally, there are upper and lower clamps that can be equipped with sealing gaskets (discs).
Reinforcement ring
: An annular ring in the combined bursting disc that closely fits the edge of the bursting disc to enhance its edge stiffness.
Back pressure difference
: Under normal operating conditions, when the pressure on the discharge side of the bursting disc safety device is higher than the pressure on the inlet side, including the inlet side, which is a negative pressure (that is, vacuum and negative pressure is pressure), explosion will occur. The pressure difference formed on both sides of the sheet in the opposite direction of pressure relief is called back pressure difference.
Back pressure bracket
: A support bracket used in combined rupture discs to prevent accidental damage to the rupture disc due to back pressure difference
Rupture disc product types:
Positive arch Slotted bursting disc
: The structure is a combined bursting disc. The bursting disc and back-pressure bracket are made of holes and slits (radial or circumferential slits) that weaken the material strength, which will minimize the impact of overpressure. Tensile failure at the interface between pore spacing
. Suitable for medium and low pressure working conditions in both gas and liquid media.
.When determining the burst temperature, consider the suitable temperature of the sealing film to ensure sealing performance
.The maximum working pressure must reach %
. It may produce debris and is not recommended in series with the safety valve.
Ordinary arched rupture disc (
)
: The rupture disc is a single-layer diaphragm that is arched due to overpressure. The wall thickness will become thinner and be damaged by tension.
.Suitable for use in gas and liquid media and working conditions with relatively high pressure of bursting discs
.With bracket, it can withstand back pressure
.The maximum working pressure is % of the minimum bursting pressure
. It may produce fragments. It is not recommended to use it in series with a safety valve. It is more dangerous.
. Because the material may limit (stainless steel is generally used), the processing burst pressure has certain limitations.
Reverse-arched crocodile tooth bursting disc
: Suitable for gaseous media, good ability to withstand back pressure, no need for brackets, can withstand full vacuum, anti-fatigue, no debris generation, more suitable for use on low-pressure equipment< br/>Reverse arched slotted bursting disc
:
This model is generally used in sanitary equipment in pharmaceutical factories. There is no spark when blasting. It is suitable for gas phase media and is suitable for use in equipment with lower pressure
/>Flat-plate slotted bursting discs: The shapes include round flat-plate slotted type and square flat-plate slotted type. Generally speaking, square ones are conventional round ones, which are non-standard and need to be customized.
The bursting disc and the back-pressure bracket, which are composed of the bursting disc sealing film and the back-pressure bracket, have holes and slits (slits on all four sides) that weaken the material strength. Overpressure is stretched at the interface with the smallest hole spacing. destroy.
. The working medium is suitable for gas phase and liquid phase. It is suitable for equipment with low pressure and large discharge diameter. It is often used in dust storage equipment.
Company name: Shanghai Langyan Security System Equipment Co., Ltd.
Contact person: Zhou Xiaoqian
Job: (Same as WeChat ID and email)
Fax number:
Use bursting discs, explosion-proof discs, and explosion-proof discs on cryogenic storage tank equipment