Is it necessary to install a safety valve at the inlet of a positive displacement pump?
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Is it necessary to install a safety valve at the inlet of a positive displacement pump? Is it necessary to install a safety valve at the inlet of the oil-gas mixed pump? If the safety valve is indoors, a large amount of oil and gas mixture will be sprayed out if the safety valve operates, which will not only pollute the environment but also be unsafe.
I have never seen such a situation in actual work. I'm looking forward to expert guidance on the specific reasons. focus on!
Not only does it not need to install a safety valve at the inlet of the oil and gas mixed pump, but it is also prohibited to install a safety valve!!!
What is the basis? Are there any regulations?
Connect the pipe to the outlet of the safety valve and discharge the material to the designated location!
What I have seen is that most positive displacement pumps have a circuit with a safety valve at the outlet. If the outlet pressure is too high, the material that cannot come out can circulate through the circuit at the inlet and outlet of the pump to prevent damage to the pump.
Is a safety valve installed at the "inlet" of a positive displacement pump? I have never heard of a safety valve installed at the outlet of a positive displacement pump to prevent damage to the pump caused by misoperation or back pressure. The safety valve jumper is connected to the pump inlet.
The safety valve is installed at the outlet, and the medium is transferred back to the inlet after the jumper. In other words, a safety valve is installed at the inlet, so why spend more money when installing one is enough.
It makes no sense to install a safety valve at the inlet. Any regulations must be justified theoretically.
The positive displacement pump itself generally has a safety return device, and the inlet safety valve has never been seen.
There is no need to install it at the inlet, only at the outlet to prevent damage to the pump after overpressure. This is the most basic thing. Anyone who has been on site will know this.
Positive displacement pumps generally do not need to consider the safety valve at the inlet. The outlet absolutely needs to install a safety valve system. It also needs to install a bypass valve to avoid damage to the pump due to outlet blockage.
:L I have only seen exported ones but never heard of imported ones.
Positive displacement pumps require a safety valve, which is generally installed on the outlet pipeline. The venting of the safety valve must be connected to the venting pipeline. There are regulations. This kind of treatment can meet safety and environmental protection regulations.
The function of the safety valve is to prevent overpressure. Under normal circumstances, it is not necessary to install the inlet pipeline because there is no overpressure problem that needs to be solved.； If it is a multi-stage positive displacement pump, a safety valve needs to be installed between the stages to prevent the inlet check valve of the next stage from being closed tightly and causing inlet pressure to be suppressed. ； In one case, if two pumps are connected in series to boost pressure, it would be reasonable to install a safety valve at the inlet of the subsequent pump. I don’t know if that’s correct?
This post was last edited by WQC on 2009-6-3 16:30. Most positive displacement pumps can have their own pump safety valves. Even if it is not provided, only a safety valve is needed to create a loop from the outlet to the inlet.
For the positive displacement pump itself, there is no need to add a safety valve to the inlet. Generally, a safety valve is added to the outlet to prevent damage to pipeline components or downstream equipment caused by overpressure in the pipeline. If there are no special requirements or special working conditions for the medium at the inlet of the volumetric pump, a safety valve should not be added. If the inlet pressure fluctuation range is too large, or for other reasons to protect equipment and people, it is possible to install a safety valve. Liz should ask clearly.
No, I guess the construction unit accidentally installed it backwards. It should be installed at the exit.~
I haven’t heard of any imports having safety valves, only filters.