CN208456924U - A kind of band spiral groove type flow-guiding structure - Google Patents
A kind of band spiral groove type flow-guiding structure Download PDFInfo
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- CN208456924U CN208456924U CN201821074313.1U CN201821074313U CN208456924U CN 208456924 U CN208456924 U CN 208456924U CN 201821074313 U CN201821074313 U CN 201821074313U CN 208456924 U CN208456924 U CN 208456924U
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- groove
- guiding device
- intake pool
- spiral groove
- upstream face
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Abstract
The utility model relates to a kind of band spiral groove type flow-guiding structure, including intake pool, water pump, the suction hose of water pump is stretched in intake pool, and suction hose is placed in one end of intake pool equipped with horn mouth；Guiding device is equipped in intake pool, guiding device is in cone, and guiding device is placed in the lower part of intake pool inside trumpet mouth；Upstream face, side, the back side of the guiding device are respectively equipped with upstream face groove, side spiral groove, back side groove；The upstream face groove, back side groove are linearly respectively arranged the upstream face in guiding device, on back side；Side spiral groove is arranged in the side of guiding device in the shape of a spiral.Pass through the utility model, it can play the role of water conservancy diversion rectification in intake pool setting spiral groove type guiding device, water can be not only obviously improved and flow into pump fluidised form and intake pool oviduct fluidised form nearby, provide a kind of more preferably inflow condition, additionally it is possible to eliminate the generation of water inlet bottom of pond portion whirlpool.
Description
Technical field
The utility model relates to a kind of band spiral groove type flow-guiding structures, belong to hydraulic engineering, municipal works technical field.
Background technique
Intake pool is the most common structures in medium and small vertical axial-flow pumping plant.Velocity flow profile in intake pool is uneven,
Or there is whirlpool, the energy characteristics and cavitation performance of water pump can be not only significantly reduced, but also may cause water pump assembly
Vibration, or even can not work normally.Only have good flow condition just and can guarantee water pump safe and highly efficient operation.In specific work
In journey design, to obtain better water pump inflow condition, while the appearance in attached bottom whirlpool below horn mouth is eliminated, often in horn mouth
Add deflection cone, four-bladed vane etc..
To improve intake pool fluidised form, existing patent is related to related measure at present: authorization patent of invention CN20152013402 exists
Closed intake pool, which is arranged a kind of novel ω rear wall and can effectively solve closed intake pool rear wall, there is slough problem, and energy
It is enough effectively improved bad fluidised form near intake pool rear wall, but bad fluidised form below horn mouth cannot be improved and improved into water pumping
Flow fluidised form.A kind of New type water pump beam is arranged in authorization patent of invention CN201610060303 in intake pool, can be effectively improved water
Fluidised form around beam is pumped, anti-whirlpool occurs, improve efficiency of pumping station, but this measure is only for by fluidised form bad in intake pool, with
And the whirlpool around elimination water pump beam, fluidised form below oviduct and vortex rope are improved unobvious.Existing patent proposes many works
Journey measure improves the fluidised form of forebay to improve the flow condition of intake pool, for fluidised form bad below oviduct and and enters
Pump flow-shape and less.
Utility model content
This patent in view of the above shortcomings of the prior art, provides a kind of band spiral groove type flow-guiding structure, can effectively change
Flow-shape and inflow condition below kind oviduct, while water inlet bottom of pond portion whirlpool can also be eliminated, it improves pumping station operation and stablizes
Property and efficiency.
The purpose of this utility model is achieved in that a kind of band spiral groove type flow-guiding structure, including intake pool, water
Pump, the suction hose of water pump stretch in intake pool, and suction hose is placed in one end of intake pool equipped with horn mouth；
It is characterized in that: being equipped with guiding device in the intake pool, guiding device is in cone, and guiding device is placed in into water
The lower part of Chi Neilabakou；Upstream face, side, the back side of the guiding device are respectively equipped with upstream face groove, side spiral
Groove, back side groove；
The upstream face groove, back side groove are linearly respectively arranged the upstream face in guiding device, on back side；
Side spiral groove is arranged in the side of guiding device in the shape of a spiral.
The bottom plate of the guiding device and intake pool pours or prefabricated in advance simultaneously.
In the guiding device, 0.60 ~ 0.75 times of a height of horn mouth diameter of guiding device；Guiding device basal diameter
It is 0.75 ~ 1.3 times of horn mouth diameter；The upstream face groove, side spiral groove, back side groove are that semi-cylindrical is recessed
Slot, the radius of groove are horn mouth diameter。
A kind of band spiral groove type method of river diversion, it is characterized in that: include intake pool, water pump, the suction hose of water pump stretch in into
In pond, and suction hose is placed in one end of intake pool equipped with horn mouth；Guiding device, and guiding device are equipped in the intake pool
It is placed in the lower part of intake pool inside trumpet mouth；Upstream face, side, the back side of guiding device are respectively equipped with upstream face groove, side
Spiral groove, back side groove；0.60 ~ 0.75 times of a height of horn mouth diameter of guiding device；Guiding device basal diameter is
0.75 ~ 1.3 times of horn mouth diameter；The upstream face groove, side spiral groove, back side groove are that semi-cylindrical is recessed
Slot, the radius of groove are horn mouth diameter；
In intake pool, when water flow flows through guiding device, upstream face water flow a part of guiding device is recessed along upstream face
Slot direction flows into water pump through horn mouth, suction hose；A part of water flow can bypass upstream face, into the side spiral shell on the side of two sides
It revolves in groove, flows into water pump through horn mouth, suction hose along side spiral groove direction；Some water flow can bypass water conservancy diversion
Device, reflexed is returned after touching intake pool rear wall, into the back side groove on back side, and along back side groove stream
Enter and flows into water pump through horn mouth, suction hose；
Water flow flows in upstream face groove, side spiral groove, back side groove, can be with upstream face groove, side
The adjustment of moving towards of spiral groove, back side groove flows to, simultaneously because flow rate of water flow is uneven in intake pool, water flow, which enters, to meet water
Face groove, side spiral groove, back side groove are made by the rectification of upstream face groove, side spiral groove, back side groove
With flow velocity being made more uniform, setting upstream face groove, side spiral groove, back side groove effectively can guide water to flow into
Enter water pump, while the adjustable water of setting of upstream face groove, side spiral groove, back side groove flows into water pump angle, makes
The angle of current for flowing into water pump is more excellent, and speed is more evenly.
The structurally reasonable simple, manufacturing of the utility model is easy, is easy to use, passes through the utility model, setting band spiral shell
The purpose of revolving groove type flow-guiding structure is to improve into pump flow-shape, and the problems such as water inlet bottom of pond portion whirlpool.Band spiral groove
Formula flow-guiding structure is a kind of taper structures, according to water flow grain direction to flow-guiding structure upstream face, back side and two sides table
Face carries out slot treatment.
Technical principle: according to flow State Analysis in pumping plant intake pool, due to water pump below horn mouth in common intake pool
Water sorption, a part of water flow streamline are redirected into water pump suddenly, and another part water flow continues flowing around oviduct and touching
Reversely enter pump to intake pool rear wall water flow, so that flow-shape is compared with disorder below horn mouth, while if intake pool inside dimension is set
Set it is unreasonable, water flows into pump before the flow velocity uniformity and inflow angle can be poor, seriously affect pump efficiency.
After adding spiral groove type guiding device, water flow flows through guiding device, the side water flow a part that meets water of guiding device
Water pump is flowed into along upstream face groove direction, separately there is a part of water flow can be around upstream face, into two sides side spiral groove
It is interior, water pump is flowed into along side spiral groove direction, there are also sub-fraction water flows can bypass guiding device, after touching intake pool
Reflexed is returned after wall, flows into water pump into back side groove, and along land side groove.Water flow groove (upstream face groove,
Flowing in side spiral groove, back side groove), adjustment flow direction can be moved towards with groove, simultaneously because water flow stream in intaking
Fast uneven, water flow enters groove, by the rectified action of groove, flow velocity can be made more uniform.Setting groove can effectively draw
Water guide stream enters water pump, while the adjustable water of setting of groove flows into pump angle, makes more excellent into water pumping flow angle, and speed is more equal
It is even.
In the utility model, guiding device is arranged immediately below water-inlet horn mouth, and guiding device surface groove can be effective
Four sides guide functions are played, flow-shape below oviduct is greatly improved, inflow angle is flowed in water pumping and the uniformity is more preferable so that entering, together
When can also effectively eliminate whirlpool, guarantee water pump safe and highly efficient operation.
The utility model has the advantages that water conservancy diversion rectification can be played the role of by the way that guiding device is arranged in intake pool, it not only can be obvious
Improve water and flow into pump fluidised form and intake pool oviduct fluidised form nearby, a kind of more preferably inflow condition is provided, additionally it is possible to eliminate into
The generation of basin bottom whirlpool.The utility model is applied to pumping plant construction and upgrading, can effectively improve pumping station operation efficiency, improves
Enter to pump flow-shape.
It is total to have seats up to a hundred with the implementation of construction and the national large pumping station technological transformation of South-to-North Water Transfer Project
The intake pool fluidised form of pumping plant needs to be improved, therefore this patent can be applied and implement, and obtains biggish economic benefit and social benefit.
Detailed description of the invention
Fig. 1 is not add spiral groove type guiding device water flow streamline schematic diagram in intake pool.
Fig. 2 is to add spiral groove type guiding device water flow streamline schematic diagram in intake pool.
Fig. 3 is spiral groove type guiding device scale diagrams.
Fig. 4 is spiral groove type guiding device front view.
Fig. 5 is spiral groove type guiding device top view.
Fig. 6 is spiral groove type guiding device side view.
In figure: 1 intake pool, 2 horn mouths, 3 guiding devices, 4 upstream faces, 4-1 upstream face groove, 5 sides, the side 5-1 spiral shell
Revolve groove, 6 back sides, 6-1 back side groove.
Specific embodiment
The utility model is further described below in conjunction with attached drawing and Detailed description of the invention.
A kind of band spiral groove type flow-guiding structure, including intake pool 1, water pump, the suction hose of water pump stretch in intake pool 1,
And suction hose is placed in one end of intake pool 1 equipped with horn mouth 2；Guiding device 3 is set in intake pool 1, and guiding device is in circular cone
Shape, and guiding device 3 is placed in the lower part of intake pool inside trumpet mouth 2；Upstream face 4, side 5, the back side 6 of guiding device 3 are distinguished
Upstream face groove 4-1, side spiral groove 5-1, back side groove 6-1 are set；Upstream face groove 4-1, back side groove 6-1 are in
Linearly it is respectively arranged the upstream face 4 in guiding device, on back side 6；Side spiral groove 5-1 is arranged in water conservancy diversion in the shape of a spiral
The side 5 of device.
Wherein, in guiding device, 0.60 ~ 0.75 times of 2 diameter of a height of horn mouth of guiding device 3；3 bottom surface of guiding device
Diameter is 0.75 ~ 1.3 times of 2 diameter of horn mouth；Upstream face groove 4-1, side spiral groove 5-1, back side groove 6-1 are
Semi-cylindrical groove, the radius of groove are 2 diameter of horn mouth。
Spiral groove type flow-guiding structure can pour simultaneously with intake pool bottom plate, can also be prefabricated in advance.
We can set in Fig. 1, and D is horn mouth diameter, then, spiral groove type guiding device design parameter is as follows:
The high H of spiral groove type guiding device=(0.60 ~ 0.75) D.
Spiral groove type guiding device basal diameter D1=(0.75~1.3 )D。
Upstream face groove 3-1, side spiral groove 4-1, back side groove 5-1 on spiral groove type guiding device are
Semi-cylindrical groove, the radius of groove be R=()D。
Further, upstream face groove 3-1, back side groove 5-1 are linearly respectively arranged in spiral groove type water conservancy diversion
On the upstream face 3 of device, back side 5；Side spiral groove 4-1 is arranged in the side of spiral groove type guiding device in the shape of a spiral
4.The global shape of spiral groove type guiding device is in cone.The bottom plate of spiral groove type guiding device and intake pool 1 is simultaneously
It pours.
In use, in intake pool 1, when water flow flows through guiding device 3,4 water flow a part edge of upstream face of guiding device 3
The upstream face direction groove 4-1 through horn mouth 2, suction hose flow into water pump；A part of water flow can bypass upstream face 4, into two sides
Side 5 on side spiral groove 5-1 in, along the side direction spiral groove 5-1 through horn mouth 2, suction hose flow into water pump；
Some water flow can bypass guiding device 3, and reflexed is returned after touching 1 rear wall of intake pool, the backwater on back side 6
In the groove 6-1 of face, and is flowed into along back side groove 6-1 and flow into water pump through horn mouth 2, suction hose；
Water flow flows in upstream face groove 4-1, side spiral groove 5-1, back side groove 6-1, can be with upstream face
The adjustment of moving towards of groove 4-1, side spiral groove 5-1, back side groove 6-1 flow to, simultaneously because flow rate of water flow in intake pool 1
Unevenly, water flow enters upstream face groove 4-1, side spiral groove 5-1, back side groove 6-1, by upstream face groove 4-1,
The rectified action of side spiral groove 5-1, back side groove 6-1, can make flow velocity more uniform, and upstream face groove 4-1, side is arranged
Surface helix groove 5-1, back side groove 6-1 can effectively guide water flow to enter water pump, while upstream face groove 4-1, side spiral shell
The adjustable water inflow water pump angle of setting for revolving groove 5-1, back side groove 6-1, keeps the angle of current for flowing into water pump more excellent,
Speed is more evenly.
Claims (3)
1. a kind of band spiral groove type flow-guiding structure, including intake pool (1), water pump, the suction hose of water pump stretch in intake pool (1)
It is interior, and suction hose is placed in one end of intake pool (1) equipped with horn mouth (2)；
It is characterized in that: being equipped with guiding device (3) in the intake pool (1), guiding device is in cone, and guiding device (3) is set
In the lower part of intake pool inside trumpet mouth (2)；Upstream face (4), side (5), the back side (6) of the guiding device (3) are set respectively
There are upstream face groove (4-1), side spiral groove (5-1), back side groove (6-1)；
The upstream face groove (4-1), back side groove (6-1) linearly be respectively arranged the upstream face (4) in guiding device,
On back side (6)；Side spiral groove (5-1) is arranged in the side (5) of guiding device in the shape of a spiral.
2. a kind of band spiral groove type flow-guiding structure according to claim 1, it is characterized in that: the guiding device (3) with
The bottom plate of intake pool (1) pours or prefabricated in advance simultaneously.
3. a kind of band spiral groove type flow-guiding structure according to claim 1, it is characterized in that: being led in the guiding device
0.60 ~ 0.75 times for flowing a height of horn mouth (2) diameter of device (3)；Guiding device (3) basal diameter is horn mouth (2) diameter
0.75 ~ 1.3 times；The upstream face groove (4-1), side spiral groove (5-1), back side groove (6-1) are semicolumn
Shape groove, the radius of groove are horn mouth (2) diameter。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821074313.1U CN208456924U (en) | 2018-07-09 | 2018-07-09 | A kind of band spiral groove type flow-guiding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821074313.1U CN208456924U (en) | 2018-07-09 | 2018-07-09 | A kind of band spiral groove type flow-guiding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208456924U true CN208456924U (en) | 2019-02-01 |
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ID=65171500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821074313.1U Active CN208456924U (en) | 2018-07-09 | 2018-07-09 | A kind of band spiral groove type flow-guiding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208456924U (en) |
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2018
- 2018-07-09 CN CN201821074313.1U patent/CN208456924U/en active Active
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