Drainage device provided with backstop and suitable for nuclear power station and design method of drainage device

Abstract

The invention discloses a drainage device provided with a backstop and suitable for a nuclear power station and a design method of the drainage device. The drainage device comprises an outer shell and an inner backstop, wherein the outer shell communicates with the backstop through a grating plate, the backstop pushes a spring through gravity, so that water can only be introduced into a drainage pipeline downwards, and when the water is evaporated and used up, the spring restores and air cannot flow upwards; the design method of the drainage device comprises the following steps: firstly, confirming the stress which can be borne by the drainage device, and then establishing a finite element model to confirm whether the drainage device is within a stress bearing range so as to judge whether the drainage device meets an anti-seismic standard. The drainage device can effectively drain water, can effectively prevent gas in a sewer from rising into a room, and can effectively resist earthquake.

Description

technical field [0001] The invention relates to a drainage device and a design method thereof, more specifically, to a drainage device with a backstop suitable for nuclear power plants and a design method thereof. Background technique [0002] When the room in the nuclear power plant encounters unexpected leakage and needs to be collected and removed, or the process pipeline leaks and the contaminated fire water needs to be drained and drained, not only the location where the drain needs to be drained, but also the operating environment of the nuclear power plant must be considered; In the special working environment, the drainage device must have better corrosion resistance, and the strength and structure need to be more reasonable, and the drainage and hydrophobic ability should be better. [0003] The drainage devices currently used in nuclear power plants meet the above requirements, but there is a fatal shortcoming in the current drainage devices: they are not sealed. ...

AI Technical Summary

Problems solved by technology

[0003] The drainage devices currently used in nuclear power plants meet the above requirements, but there is a fatal shortcoming in the drainage devices currently used: they are not sealed

Therefore, it is necessary for the staff to inject a certain amount of water into the drainage device on a regular basis. However, there are a large number of drainage devices in nuclear power plants, and often one unit can reach about 1,000. The workload is huge, resulting in a waste of manpower and material resources.

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