JP2018155102A5

JP2018155102A5 -

Info

Publication number: JP2018155102A5
Application number: JP2017049886A
Authority: JP
Filing date: 2017-03-15
Publication date: 2019-01-17
Anticipated expiration: 2037-03-15

Description

気泡ポンプは、揚水の進行に伴い吸水面が低下する吸水槽においては、揚水の進行に伴い揚水量が低減し、吸水槽水深と同高さ以上の揚程ではほとんど揚水できない。
一般的な気泡ポンプが実用的な水量を揚水できる高さは、吸水面から気泡ポンプの圧縮空気を注入する位置までの水深（以降“浸水深さ”と称呼）の５０％以下程度の高さに揚程が制限され、残留水量も多くなり非常に使い勝手が悪い課題が有る。 In the water pump where the water absorption surface is lowered with the progress of pumping, the bubble pump is reduced in pumping amount with the progress of pumping, and can hardly be pumped at a head height equal to or higher than the depth of the water tank .
The height at which a general bubble pump can pump a practical amount of water is about 50% or less of the water depth from the water absorption surface to the position where the compressed air of the bubble pump is injected (hereinafter referred to as “flood depth”). However, there is a problem that the head is limited and the amount of residual water increases, which makes it extremely inconvenient.

各段気泡ポンプの気液分離箱５間の高低差は、気泡ポンプの性能を大きく左右する浸水深さ係数を”σ＝浸水深さ÷（浸水深さ＋揚程）”とする時、実用的な浸水深さ係数はσ＝０．７程度であり、吸水口２を備えた吸水管３の気泡ポンプでは、吸水口２から吸水槽１の水面高さ迄の１．４２倍高さ位置程度に最初の気液分離箱５を設置し、次段の気液分離箱の設置高さは、前段気液分離箱５から次段気泡ポンプの給気ケース１０間の高低差よりも１．４２倍高く、順次各段の気液分離箱５を高くして設置したものである。

The height difference between the gas-liquid separation boxes 5 of each stage bubble pump is practical when the submersion depth coefficient that greatly affects the performance of the bubble pump is “σ = submergence depth ÷ (submergence depth + head)”. The inundation depth coefficient is about σ = 0.7, and in the bubble pump of the water suction pipe 3 having the water suction port 2, it is about 1.42 times the height position from the water suction port 2 to the water surface height of the water absorption tank 1. The first gas-liquid separation box 5 is installed in the first stage, and the installation height of the next-stage gas-liquid separation box is 1.42 higher than the height difference between the preceding-stage gas-liquid separation box 5 and the air supply case 10 of the next-stage bubble pump. The gas-liquid separation box 5 of each stage is sequentially raised and installed.