CN116123148B - Novel bulb body structure with regular pits on surface based on energy conservation and noise reduction - Google Patents
Novel bulb body structure with regular pits on surface based on energy conservation and noise reduction Download PDFInfo
- Publication number
- CN116123148B CN116123148B CN202310151918.5A CN202310151918A CN116123148B CN 116123148 B CN116123148 B CN 116123148B CN 202310151918 A CN202310151918 A CN 202310151918A CN 116123148 B CN116123148 B CN 116123148B
- Authority
- CN
- China
- Prior art keywords
- bulb
- flow
- water flow
- bulb body
- regular
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/181—Axial flow rotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/548—Specially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D3/00—Axial-flow pumps
- F04D3/005—Axial-flow pumps with a conventional single stage rotor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
The invention relates to a novel bulb body structure with regular pits on the surface based on energy conservation and noise reduction, which comprises a bulb body, wherein a plurality of regular pits are arranged on the bulb body, the openings of the regular pits are hexagonal openings, and the regular pits are arc-shaped. According to the invention, the surface of the bulb body of the traditional bulb tubular pump device is optimized, and a plurality of regular pits are uniformly distributed on the surface of the bulb body. When the water flow is accelerated by the water pump, the high-speed water flow impacts the surface of the bulb body, and due to the pits, the impact of the high-speed water flow is relieved to a certain extent, and the flow-induced noise caused by the water flow impact is reduced. Meanwhile, the resistance coefficient of the bulb body is reduced, and the hydraulic loss generated by water flowing through the bulb body is reduced.
Description
Technical Field
The invention relates to a novel bulb structure with regular pits on the surface based on energy conservation and noise reduction, and belongs to the technical fields of hydraulic engineering and municipal engineering.
Background
The bulb through-flow pump has the advantages of straight flow passage, small hydraulic loss, high device efficiency and the like, and a plurality of pump stations in the one-term engineering of the east-west line of south-water and north-water have adopted the bulb through-flow pump device type. Compared with foreign construction, the construction start of the domestic bulb through-flow pump station is later. And compared with other pump stations, the bulb through-flow pump station is more special. In a typical type of pump station, the motor is placed outside the flow channel, while in a bulb through-flow pump station, the bulb body with the motor is placed together in the bulb through-flow pump device flow channel. Therefore, compared with other pump stations, the bulb tubular pump device has the advantages that the flow state of the flow is complex and the hydraulic loss is large due to the influence of the bulb body in the flow channel on the flow of the water body. At present, the optimization research of the bulb body in the bulb through-flow pump device is more, but the research of the surface treatment of the bulb body to reduce the hydraulic loss is less.
Because of the existence of the bulb body in the flow channel of the bulb tubular pump device, the flow cross section of the flow channel is rapidly compressed, the flow velocity of the cross section is accelerated, and the hydraulic loss is increased. Secondly, the bulb body has a special structure to obstruct the movement of the water flow in the flow channel, so that the flow state of the water flow in the flow channel is disturbed; meanwhile, the high-speed water flow pressurized by the impeller hits the bulb body to avoid the increase of noise in the flow channel.
Disclosure of Invention
The invention aims to solve the existing problems and provide a novel bulb structure with regular pits on the surface based on energy conservation and noise reduction.
The purpose of the invention is realized in the following way: the novel bulb body structure comprises a bulb body arranged in a bulb tubular pump, wherein an impeller is arranged at a water inlet of the bulb tubular pump, and the novel bulb body structure is characterized in that a plurality of regular pits are arranged on the bulb body, openings of the regular pits are hexagonal openings, and the regular pits are arc-shaped;
wherein, if the diameter of the impeller is D, the side length L1 of the hexagonal opening isThe diameter R1 of the hexagonal opening isDepth of regular pitH1 is->The diameter R2 of the arc shape in the regular pit is +.>The straight line distance B1 of the two corners of the hexagonal symmetry is +.>
The regular pits are uniformly distributed on the bulb body.
And in the plurality of regular pits, the size of each regular pit is consistent.
The method for improving the water flow state by utilizing the novel bulb body structure with the regular pits on the surface based on energy conservation and noise reduction is characterized in that a bulb body is arranged in a bulb tubular pump device; after the bulb through-flow pump device is started, after water flow is accelerated by an impeller in the bulb through-flow pump, high-speed water flow impacts the surface of the bulb body, and due to the existence of regular pits on the bulb body, the impact of the high-speed water flow is relieved, and the flow-induced noise caused by the water flow impact is reduced; the regular pits on the surface of the bulb body disturb the water flow nearby, so that flow separation is generated when the water flow flows through the regular pits, and the flow separation induces the water flow to be transited in advance, thereby reducing the resistance coefficient of the bulb body and reducing the hydraulic loss generated when the water flow flows through the bulb body;
thereby realizing the change of the flow state of the water flow.
The invention has reasonable structure and scientific method, and provides a novel bulb structure with regular pits on the surface based on energy conservation and noise reduction. The pit top and bottom views are hexagonal, and the left view is arc-shaped (circular arc-shaped).
The invention optimizes the surface of the bulb body of the traditional bulb tubular pump device, and a plurality of regular pits are uniformly distributed on the surface of the bulb body. When the water flow is accelerated by the water pump, the high-speed water flow impacts the surface of the bulb body, and due to the pits, the impact of the high-speed water flow is relieved to a certain extent, and the flow-induced noise caused by the water flow impact is reduced. Secondly, the pits on the surface of the bulb body can disturb nearby water flow, so that flow separation is generated when the water flow flows through the pits, and the small-scale flow separation can induce the water flow to be converted in advance, thereby reducing the resistance coefficient of the bulb body and reducing hydraulic loss generated when the water flow flows through the bulb body.
Drawings
FIG. 1 is a schematic view of the bulb body installed in a bulb through-flow pump device according to the present invention;
FIG. 2 is a schematic view of the structure of the regular pit opening direction on the bulb body of the present invention;
FIG. 3 is a cross-sectional view of the bulb body of the present invention in another direction of the regular depressions;
in the figure: 1 bulb body, 2 regular pits, 3 impellers, 4 leading guide vanes, 5 trailing guide vanes, 6 water inlet channels, 7 water outlet channels and 8 supporting piers.
Detailed Description
The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings.
The novel bulb body structure comprises a bulb body 1 arranged in a bulb tubular pump, wherein an impeller 3 is arranged at a water inlet of the bulb tubular pump, a plurality of regular pits 2 are arranged on the bulb body 1, the openings of the regular pits 2 are hexagonal openings, and the regular pits 2 are arc-shaped; assuming that the diameter of the impeller 3 is D, the side length L1 of the hexagonal opening isThe diameter R1 of the hexagonal opening is +.>The depth H1 of the regular pit 2 is +.>The diameter R2 of the arc in the regular pit 2 is +.>The straight line distance B1 of the two corners of the hexagonal symmetry is +.>
The regular pits 2 are uniformly distributed on the bulb body 1.
And in the plurality of regular pits 2, the size of each regular pit 2 is consistent.
When in use, the bulb body 1 is arranged in the bulb tubular pump device; after the bulb through-flow pump device is started, after water flow is accelerated by an impeller in the bulb through-flow pump device, high-speed water flow impacts the surface of the bulb body 1, and due to the existence of the regular pits 2 on the bulb body 1, the impact of the high-speed water flow is relieved, and the flow-induced noise caused by the water flow impact is reduced; the regular pits 2 on the surface of the bulb body 1 disturb the water flow nearby, so that flow separation is generated when the water flow flows through the regular pits 2, and the flow separation induces the water flow to be converted in advance, thereby reducing the resistance coefficient of the bulb body 1 and reducing the hydraulic loss generated when the water flow flows through the bulb body 1;
thereby realizing the change of the flow state of the water flow.
The specific use is as follows:
step 1), a bulb body 1 is installed and fixed in a bulb tubular pump, two ends of the bulb tubular pump are respectively provided with a water inlet and a water outlet, an impeller 3 is installed at the water inlet of the bulb tubular pump, and a front guide vane 4 and a rear guide vane 5 are installed on the inner wall of the bulb tubular pump;
the rear guide vane 5 faces the impeller 3 at the water inlet of the bulb through-flow pump, the impeller 3 is positioned between the front guide vane 4 and the rear guide vane 5, the front end of the bulb body 1 faces the rear guide vane 5, and the tail end of the bulb body 1 faces the water outlet of the bulb through-flow pump;
step 2), installing a bulb through-flow pump in the water flow pipeline, wherein a water inlet of the bulb through-flow pump faces a water inlet flow channel 6 of the water flow pipeline, and a water outlet of the bulb through-flow pump faces a water outlet flow channel 7 of the water flow pipeline;
step 3), starting a bulb tubular pump, rotating the impeller 3, and discharging water flow from the water inlet flow channel 6, after flowing in from the water inlet flow channel through the front guide vane 4, the impeller 3 and the rear guide vane 5, after flowing in from the water outlet flow channel 7 after flowing in from the bulb main body 1;
after the water flow is accelerated by the impeller in the bulb tubular pump, the high-speed water flow impacts the surface of the bulb body 1, and the impact of the high-speed water flow is relieved due to the existence of the regular pits 2 on the bulb body 1, so that the flow-induced noise caused by the water flow impact is reduced; the regular pits 2 on the surface of the bulb body 1 disturb the water flow nearby, so that flow separation is generated when the water flow flows through the regular pits 2, and the flow separation induces the water flow to be converted in advance, thereby reducing the resistance coefficient of the bulb body 1 and reducing the hydraulic loss generated when the water flow flows through the bulb body 1.
Further, the bulb through-flow pump is fixedly arranged in the water flow pipeline through the support pier 8.
Claims (6)
1. The novel bulb body structure with the regular pits on the surface based on energy conservation and noise reduction comprises a bulb body (1) arranged in a bulb tubular pump, wherein an impeller (3) is arranged at a water inlet of the bulb tubular pump, and the novel bulb body structure is characterized in that a plurality of regular pits (2) are arranged on the bulb body (1), openings of the regular pits (2) are hexagonal openings, and the regular pits (2) are arc-shaped;
wherein, if the diameter of the impeller (3) is D, the side length L1 of the hexagonal opening isThe diameter R1 of the arc section at the joint of the hexagonal opening edges is +.>The depth H1 of the regular pit (2) is +.>The diameter R2 of the arc shape in the regular pit (2) isThe straight line distance B1 of the two corners of the hexagonal symmetry is +.>
2. The novel energy-saving and noise-reducing bulb structure with regular pits on the surface, as claimed in claim 1, is characterized in that the regular pits (2) are uniformly distributed on the bulb body (1).
3. The novel energy-saving and noise-reducing bulb structure with regular pits on the surface, as claimed in claim 1, wherein the size of each regular pit (2) is identical among a plurality of regular pits (2).
4. A method for improving water flow state by using the novel bulb structure with regular pits on the surface based on energy saving and noise reduction according to any one of claims 1-3, which is characterized in that a bulb body (1) is arranged in a bulb through-flow pump device; after the bulb through-flow pump device is started, after water flow is accelerated by an impeller in the bulb through-flow pump device, high-speed water flow impacts the surface of the bulb body (1), and due to the existence of the regular pits (2) on the bulb body (1), the impact of the high-speed water flow is relieved, and the flow-induced noise caused by the water flow impact is reduced; the regular pits (2) on the surface of the bulb body (1) disturb the nearby water flow, so that flow separation is generated when the water flow flows through the regular pits (2), and the flow separation induces the water flow to be transited in advance, thereby reducing the resistance coefficient of the bulb body (1) and reducing the hydraulic loss generated when the water flow flows through the bulb body (1);
thereby realizing the change of the flow state of the water flow.
5. The method according to claim 4, comprising the steps of:
step 1), a bulb body (1) is fixedly arranged in a bulb tubular pump, two ends of the bulb tubular pump are respectively provided with a water inlet and a water outlet, an impeller (3) is arranged at the water inlet of the bulb tubular pump, and a front guide vane (4) and a rear guide vane (5) are arranged on the inner wall of the bulb tubular pump;
the rear guide vane (5) faces the impeller (3) at the water inlet of the bulb through-flow pump, the impeller (3) is positioned between the front guide vane (4) and the rear guide vane (5), the front end of the bulb body (1) faces the rear guide vane (5), and the tail end of the bulb body (1) faces the water outlet of the bulb through-flow pump;
step 2), installing a bulb through-flow pump in the water flow pipeline, wherein a water inlet of the bulb through-flow pump faces a water inlet flow channel (6) of the water flow pipeline, and a water outlet of the bulb through-flow pump faces a water outlet flow channel (7) of the water flow pipeline;
step 3), starting a bulb through-flow pump, rotating an impeller (3), and discharging water flow from a water inlet flow channel (6) through a water outlet flow channel (7) after flowing in from the water inlet flow channel (6) and passing through a front guide vane (4), the impeller (3) and a rear guide vane (5);
after the water flow is accelerated by the impeller in the bulb tubular pump, the high-speed water flow impacts the surface of the bulb body (1), and due to the existence of the regular pits (2) on the bulb body (1), the impact of the high-speed water flow is relieved, and the flow-induced noise caused by the water flow impact is reduced; the regular pits (2) on the surface of the bulb body (1) disturb nearby water flow, so that flow separation is generated when the water flow flows through the regular pits (2), and the flow separation induces the water flow to be transited in advance, so that the resistance coefficient of the bulb body (1) is reduced, and the hydraulic loss generated when the water flow flows through the bulb body (1) is reduced.
6. The method according to claim 5, characterized in that in step 2) the bulb through-flow pump is fixed by means of a support pier (8) mounted in the water flow conduit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310151918.5A CN116123148B (en) | 2023-02-20 | 2023-02-20 | Novel bulb body structure with regular pits on surface based on energy conservation and noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310151918.5A CN116123148B (en) | 2023-02-20 | 2023-02-20 | Novel bulb body structure with regular pits on surface based on energy conservation and noise reduction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116123148A CN116123148A (en) | 2023-05-16 |
| CN116123148B true CN116123148B (en) | 2023-09-29 |
Family
ID=86306278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310151918.5A Active CN116123148B (en) | 2023-02-20 | 2023-02-20 | Novel bulb body structure with regular pits on surface based on energy conservation and noise reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116123148B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010090822A (en) * | 2008-10-08 | 2010-04-22 | Toshiba Corp | Vertical shaft valve type hydraulic turbine generator |
| CN106050736A (en) * | 2016-06-24 | 2016-10-26 | 宁波奥克斯空调有限公司 | Centrifugal fan noise reduction blade structure |
| CN205876812U (en) * | 2016-08-03 | 2017-01-11 | 广东美的制冷设备有限公司 | Snail tongue, wind channel structure and split air conditioner |
| CN208778346U (en) * | 2018-08-24 | 2019-04-23 | 无锡市优工精密阀门有限公司 | Pump housing influent stream pipe with guide flow noise elimination function |
| CN210152972U (en) * | 2019-07-02 | 2020-03-17 | Tcl家用电器（中山）有限公司 | Wind wheel subassembly and range hood |
| CN112096663A (en) * | 2020-09-25 | 2020-12-18 | 南京风机厂有限公司 | Noise reduction device for air inlet of fan |
| CN213928923U (en) * | 2020-12-23 | 2021-08-10 | 重庆信鑫智能科技有限公司 | Noise reduction pipeline fan |
| CN113623230A (en) * | 2021-09-15 | 2021-11-09 | 合肥恒大江海泵业股份有限公司 | Tubular pump unit with function of making an uproar is fallen |
| CN114763800A (en) * | 2021-01-12 | 2022-07-19 | 青岛海尔智慧厨房电器有限公司 | Noise reduction type fan volute and range hood |
| CN217354902U (en) * | 2022-05-23 | 2022-09-02 | 富奥汽车零部件股份有限公司 | Air blower and automobile |
-
2023
- 2023-02-20 CN CN202310151918.5A patent/CN116123148B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010090822A (en) * | 2008-10-08 | 2010-04-22 | Toshiba Corp | Vertical shaft valve type hydraulic turbine generator |
| CN106050736A (en) * | 2016-06-24 | 2016-10-26 | 宁波奥克斯空调有限公司 | Centrifugal fan noise reduction blade structure |
| CN205876812U (en) * | 2016-08-03 | 2017-01-11 | 广东美的制冷设备有限公司 | Snail tongue, wind channel structure and split air conditioner |
| CN208778346U (en) * | 2018-08-24 | 2019-04-23 | 无锡市优工精密阀门有限公司 | Pump housing influent stream pipe with guide flow noise elimination function |
| CN210152972U (en) * | 2019-07-02 | 2020-03-17 | Tcl家用电器（中山）有限公司 | Wind wheel subassembly and range hood |
| CN112096663A (en) * | 2020-09-25 | 2020-12-18 | 南京风机厂有限公司 | Noise reduction device for air inlet of fan |
| CN213928923U (en) * | 2020-12-23 | 2021-08-10 | 重庆信鑫智能科技有限公司 | Noise reduction pipeline fan |
| CN114763800A (en) * | 2021-01-12 | 2022-07-19 | 青岛海尔智慧厨房电器有限公司 | Noise reduction type fan volute and range hood |
| CN113623230A (en) * | 2021-09-15 | 2021-11-09 | 合肥恒大江海泵业股份有限公司 | Tubular pump unit with function of making an uproar is fallen |
| CN217354902U (en) * | 2022-05-23 | 2022-09-02 | 富奥汽车零部件股份有限公司 | Air blower and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116123148A (en) | 2023-05-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101327340B1 (en) | Direct-connection low-speed small mixed-flow hydroturbine for hydrodynamic energy-saving cooling tower | |
| CN207647673U (en) | A kind of tubular turbine | |
| CN102182706B (en) | S-shaped downwards horizontal axis-extending tubular pump device | |
| CN116123148B (en) | Novel bulb body structure with regular pits on surface based on energy conservation and noise reduction | |
| CN213981024U (en) | Tubular turbine for improving draft tube pressure pulsation | |
| CN103114953A (en) | Mixed-flow type water turbine reversed S-shaped rotating wheel with long and short blades | |
| CN2100503U (en) | Vane flow-stabilizing device of turbines | |
| CN202140236U (en) | Six-working-condition bidirectional tidal power generation hydraulic turbine | |
| CN110296032B (en) | Bidirectional full-through-flow turbine | |
| CN112360660B (en) | Long and short blade type reversible pump turbine | |
| CN113446237B (en) | Centrifugal ventilator with semi-open type ternary impeller | |
| CN102182690A (en) | Composite tubular pump device | |
| CN214036269U (en) | Radial-to-axial final-stage guide vane of vertical pipeline multistage centrifugal pump | |
| CN2429808Y (en) | Acoustic speed varying boost heat exchanger | |
| CN210290261U (en) | Two-way vertical pump station is with going out water diffusion barrier structure | |
| CN201560950U (en) | Three-side water inlet front-mounted shaft tubular pump device | |
| CN205225560U (en) | Waterwheel formula hydraulic generator's back upper place drainage formula waterwheel | |
| CN111577508A (en) | High-specific-speed axial flow water turbine with double-inlet volute | |
| CN202500786U (en) | Motor and diving tubular pump apparatus with front motor segment | |
| CN213743805U (en) | Siphon type direct-drive through-flow turbine | |
| CN211820084U (en) | Front-mounted shaft tubular pump water inlet flow channel with bottom flow guide structure | |
| CN113565797B (en) | Pipeline pump with inlet flow guide structure | |
| CN218740682U (en) | Flow guide mechanism | |
| CN219639069U (en) | Axial flow pump beneficial to water flow diffusion | |
| CN213598113U (en) | Through-flow turbine capable of inhibiting gap cavitation of runner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |