The role of copper sheets connecting flanges
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I found that the two flanges on the toluene pipeline in our factory are connected with copper sheets. This is what I thought.: Is it because toluene flowing in the pipeline and friction with the pipeline generates static electricity? If there is no conductive copper skin between the flanges, when the static electricity accumulates to a certain extent, one flange will discharge to the other flange, generating sparks, and there is a risk of combustion and explosion. I don’t know if this is right, so another question comes to mind: Do all liquids flowing in pipes generate static electricity? Please discuss and give advice!
That's right, this is a safety regulation, also called flange electrostatic bridging. It requires flanges with four bolt holes or less (including four) to be connected to classic bridging.
Yes, it is anti-static. Not all liquids can be used for electrostatic bridging. Some liquids themselves can conduct electricity.
This is the so-called electrostatic jumper. Its main function is to release static electricity. Not all liquids flowing in pipelines will generate static electricity. This depends on the conductivity of the liquid. As for whether to add an electric jumper, it depends on the danger of the liquid and the conductivity of the liquid.
This is an electrostatic jumper in a long-distance pipeline. It is a safety protection and can guide the static electricity on both sides of the flange to ground.
Thank you all very much. I have clarified this issue. I wish you all good luck in your work and a happy life:)
It is not anti-static, it is used for electrostatic jump conduction and is finally grounded.
This is a safety measure and is an electrostatic jumper. For flammable and explosive media, the resistance between the pipe flanges must not be greater than 3 ohms, and the resistance of the pipeline to the earth must not be greater than 10 ohms. Pipes placed on pipe racks must be electrostatically grounded every 6 meters.
Everyone’s explanation is correct. This is a safety measure and is an electrostatic jumper. Depending on the nature and conductivity of the fluid, you should consider whether to install an electrostatic jumper.
It cannot be said that all liquids flowing in pipes will generate static electricity. This is mainly related to the flow rate of the liquid. If the flow rate is fast, static electricity will easily be generated.
It's not that reason. The purpose is to make electrical connections to equalize the potential of the entire pipeline and reduce electrochemical corrosion.
It is anti-static bridging. Not only the flow of flammable and explosive liquids can easily generate static electricity, but also flammable and explosive gases are more likely to generate static electricity. In order to prevent accidents caused by static electricity accumulation, the specification stipulates that the flanges of pipelines transporting flammable and explosive fluids should be bridged, and the generated static electricity will eventually be conducted to the ground electrode.