The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device
In order to study the influence of the position of the bulb on the hydraulic performance of a submersible tubular pump device, based on a large-scale pumping station, two schemes—involving a front-mounted bulb and a rear-mounted bulb, respectively—were designed. The front-mounted scheme uses the GL-...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-07-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/9/8/831 |
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| author | Zhuangzhuang Sun Jie Yu Fangping Tang |
| author_facet | Zhuangzhuang Sun Jie Yu Fangping Tang |
| author_sort | Zhuangzhuang Sun |
| collection | DOAJ |
| description | In order to study the influence of the position of the bulb on the hydraulic performance of a submersible tubular pump device, based on a large-scale pumping station, two schemes—involving a front-mounted bulb and a rear-mounted bulb, respectively—were designed. The front-mounted scheme uses the GL-2008-03 hydraulic model and its conventional guide vane, while the rear-mounted scheme uses the optimized design of a diffuser vane. The method of combining numerical simulation and experimental testing was used to analyze the differences between the external and internal characteristics of the two schemes. The results show that, under the condition of reasonable diffusion guide vane design, the efficiency under the rear-mounted scheme is higher than that under the front-mounted scheme, where the highest efficiency difference is about 1%. Although the front-mounted bulb scheme reduces the hydraulic loss of the bulb section, the placement of the bulb on the water inlet side reduces the flow conditions of the impeller. Affected by the circulation of the guide vane outlet, the hydraulic loss of the outlet channel is greater than the rear-mounted scheme. The bulb plays a rectifying function when the bulb is placed behind, which greatly eliminates the annular volume of the guide vane outlet, and the water outlet channel has a smaller hydraulic loss. In the front-mounted scheme, the water flow inside the outlet channel squeezes to the outer wall, causing higher entropy production near the outer wall area. The entropy production of the rear-mounted scheme is mainly in the bulb section and the bulb support. This research can provide reference for the design and form selection of a submersible tubular pump device, which has great engineering significance. |
| first_indexed | 2024-03-10T08:42:16Z |
| format | Article |
| id | doaj.art-bd54c51978334e9e965fb6f5d1e97fab |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T08:42:16Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-bd54c51978334e9e965fb6f5d1e97fab2023-11-22T08:14:59ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-07-019883110.3390/jmse9080831The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump DeviceZhuangzhuang Sun0Jie Yu1Fangping Tang2Jiangyang Road South Campus, College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, ChinaJiangyang Road South Campus, College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, ChinaJiangyang Road South Campus, College of Hydraulic Science and Engineering, Yangzhou University, Yangzhou 225000, ChinaIn order to study the influence of the position of the bulb on the hydraulic performance of a submersible tubular pump device, based on a large-scale pumping station, two schemes—involving a front-mounted bulb and a rear-mounted bulb, respectively—were designed. The front-mounted scheme uses the GL-2008-03 hydraulic model and its conventional guide vane, while the rear-mounted scheme uses the optimized design of a diffuser vane. The method of combining numerical simulation and experimental testing was used to analyze the differences between the external and internal characteristics of the two schemes. The results show that, under the condition of reasonable diffusion guide vane design, the efficiency under the rear-mounted scheme is higher than that under the front-mounted scheme, where the highest efficiency difference is about 1%. Although the front-mounted bulb scheme reduces the hydraulic loss of the bulb section, the placement of the bulb on the water inlet side reduces the flow conditions of the impeller. Affected by the circulation of the guide vane outlet, the hydraulic loss of the outlet channel is greater than the rear-mounted scheme. The bulb plays a rectifying function when the bulb is placed behind, which greatly eliminates the annular volume of the guide vane outlet, and the water outlet channel has a smaller hydraulic loss. In the front-mounted scheme, the water flow inside the outlet channel squeezes to the outer wall, causing higher entropy production near the outer wall area. The entropy production of the rear-mounted scheme is mainly in the bulb section and the bulb support. This research can provide reference for the design and form selection of a submersible tubular pump device, which has great engineering significance.https://www.mdpi.com/2077-1312/9/8/831submersible tubular pumpbulb positionhydraulic performancenumerical simulationmodel test |
| spellingShingle | Zhuangzhuang Sun Jie Yu Fangping Tang The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device Journal of Marine Science and Engineering submersible tubular pump bulb position hydraulic performance numerical simulation model test |
| title | The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device |
| title_full | The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device |
| title_fullStr | The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device |
| title_full_unstemmed | The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device |
| title_short | The Influence of Bulb Position on Hydraulic Performance of Submersible Tubular Pump Device |
| title_sort | influence of bulb position on hydraulic performance of submersible tubular pump device |
| topic | submersible tubular pump bulb position hydraulic performance numerical simulation model test |
| url | https://www.mdpi.com/2077-1312/9/8/831 |
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