CN208456927U - A kind of horn-like vibration-proof structure of groove type based on raising hydraulic stability - Google Patents
A kind of horn-like vibration-proof structure of groove type based on raising hydraulic stability Download PDFInfo
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- CN208456927U CN208456927U CN201821074305.7U CN201821074305U CN208456927U CN 208456927 U CN208456927 U CN 208456927U CN 201821074305 U CN201821074305 U CN 201821074305U CN 208456927 U CN208456927 U CN 208456927U
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- antihunting device
- horn
- circular arc
- horn mouth
- oval calotte
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Abstract
The utility model relates to a kind of horn-like vibration-proof structure of groove type based on raising hydraulic stability, including intake pool, water pump, the oviduct on water pump is stretched in intake pool, and oviduct is placed in one end in intake pool equipped with horn mouth；Antihunting device is equipped in the intake pool, and antihunting device is placed in immediately below horn mouth；The antihunting device be it is horn-like, the top half of antihunting device is oval calotte, and oval calotte bus top end point tangent line is vertical with antihunting device upper bottom surface；Antihunting device lower half portion is circular arc camber, and the curvature of circular arc camber is greater than the curvature of oval calotte, and circular arc camber bus and oval calotte bus intersection point are tangent；It is evenly arranged on the side wall of the antihunting device several through oval calotte, the groove of circular arc camber.By the utility model, the generation in attached bottom whirlpool below oviduct not only can be obviously eliminated, but also can play the role of adjusting flow direction-changing, realizes that water flow inflow angle is more excellent, the preferable inflow condition of the flow velocity uniformity.
Description
Technical field
The utility model relates to a kind of based on the horn-like vibration-proof structure of groove type for improving hydraulic stability, specifically,
It is related to a kind of adjustable toolframe of socket.
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 reduce water pump water
Force vibration.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 water
Hydraulic pulse is related to less at pump.And it is main at present by changing parameters of pump or additional measure improvement pressure fluctuation, it is right
In by inside and outside intake pool plus engineering measure improve water pump become a mandarin the uniformity and improve inflow angle, thus reduce water pump vibration
Substantially without being related to.
Utility model content
The utility model in view of the above shortcomings of the prior art, provides a kind of based on the groove type loudspeaker for improving hydraulic stability
Shape vibration-proof structure is effectively eliminating attached bottom whirlpool below oviduct while can reduce hydraulic loss, better plays water conservancy diversion work
With improvement water pump inflow angle and the flow velocity uniformity reduce pressure fluctuation at water pump, improve pumping station operation stability and efficiency.
The purpose of this utility model is achieved in that a kind of based on the horn-like vibrationproof of groove type for improving hydraulic stability
Structure, including intake pool, water pump, the oviduct on water pump stretches in intake pool, and one end that oviduct is placed in intake pool is set
There is horn mouth；
It is characterized in that: being equipped with antihunting device in the intake pool, and antihunting device is placed in immediately below horn mouth；The vibrationproof
Device be it is horn-like, the top half of antihunting device is oval calotte, on oval calotte bus top end point tangent line and antihunting device
Plane perpendicular；Antihunting device lower half portion is circular arc camber, and the curvature of circular arc camber is greater than the curvature of oval calotte, circular arc camber
Bus and oval calotte bus intersection point are tangent；It is evenly arranged on the side wall of the antihunting device several through oval calotte, circle
The groove of arc surface.
The groove number is 6 ~ 8.
The antihunting device pours or prefabricated in advance simultaneously with intake pool bottom plate.
In the antihunting device, 0.54 ~ 0.72 times of a height of horn mouth diameter of antihunting device；The upper bottom of antihunting device
Face diameter is 0.15 ~ 0.35 times of horn mouth diameter；The bottom surface of antihunting device is 0.8 ~ 1.2 times of horn mouth diameter；It is oval
The oval calotte bus equation of curved surface are as follows:, wherein a=, b=, D is bell-mouthed diameter；The circular arc of circular arc camber
Surface bus radius is 0.40 ~ 0.50 times of horn mouth diameter；The width of groove is horn mouth diameter, the slot of groove
It is deep of same size with groove.
A kind of horn-like vibration isolation method of groove type based on raising hydraulic stability, it is characterized in that: including intake pool, water
It pumps, the oviduct on water pump stretches in intake pool, and oviduct is placed in one end in intake pool equipped with horn mouth；In intake pool
Equipped with antihunting device, and antihunting device is placed in immediately below horn mouth；The antihunting device is horn-like, the upper half of antihunting device
It is divided into oval calotte, oval calotte bus top end point tangent line is vertical with antihunting device upper bottom surface；Antihunting device lower half portion is circle
Arc surface, the curvature of circular arc camber are greater than the curvature of oval calotte, and circular arc camber bus and oval calotte bus intersection point are tangent；Institute
It states and is evenly arranged with several grooves for running through oval calotte, circular arc camber on the side wall of antihunting device；
In intake pool, when water flow flows through antihunting device, most of water flow will receive the barrier guiding function of antihunting device, edge
The circular arc camber bus on antihunting device, oval calotte bus enter water pump through horn mouth, oviduct, wherein antihunting device
Groove on side wall can also provide buffering while playing guide functions for water flow, to reduce water flow loss, also avoid
Take the generation of air water stream；The curvature of circular arc camber is greater than the curvature of oval calotte, can also provide while water conservancy diversion for water flow
Biggish steering space is conducive to adjust flow rate of water flow and direction, water flow is avoided directly to impact, and reduces since antihunting device hinders
Water proof stream and the hydraulic loss generated reduce horn mouth water pressure fluctuation nearby, avoid the appearance of abnormal water pressure fluctuation；
Oval calotte bus top end point tangent line is vertical with antihunting device upper bottom surface, circular arc camber bus and oval calotte bus
Intersection point is tangent, and water flow outflow circular arc camber enters oval calotte, and water flows through horn mouth to final major part, oviduct enters water pump,
And when flowing into horn mouth, the streamline of water flow is vertical with horn mouth, and small part water flow bypasses antihunting device reflexed after encountering rear wall,
Enter water pump through horn mouth, oviduct along the groove on antihunting device side wall.
The groove number is 6 ~ 8.
The antihunting device pours or prefabricated in advance simultaneously with intake pool bottom plate.
In the antihunting device, 0.54 ~ 0.72 times of a height of horn mouth diameter of antihunting device；The upper bottom of antihunting device
Face diameter is 0.15 ~ 0.35 times of horn mouth diameter；The bottom surface of antihunting device is 0.8 ~ 1.2 times of horn mouth diameter；It is oval
The oval calotte bus equation of curved surface are as follows:, wherein a=, b=, D is bell-mouthed diameter；The circular arc of circular arc camber
Surface bus radius is 0.40 ~ 0.50 times of horn mouth diameter；The width of groove is horn mouth diameter, the slot of groove
It is deep of same size with groove.
The structurally reasonable simple, manufacturing of the utility model is easy, is easy to use, passes through the utility model, groove is arranged
The purpose of formula horn-like vibration-proof structure is to solve bad fluidised form below intake pool inside trumpet pipe, attached bottom whirlpool and the vibration of water pump waterpower
The problems such as dynamic.Antihunting device surface bus is the combination (circular arc camber bus, oval calotte bus) of ellipse and circular arc line, together
When according to bus carry out slot treatment on the horn-like vibration-proof structure surface of groove type.
According to flow State Analysis in pumping plant intake pool, since pump sump acts below horn mouth in common intake pool,
A part of water flow streamline is redirected into water pump suddenly, and another part water flow continues flowing after encountering intake pool around oviduct
Wall water flow reversely enter pump so that horn mouth below flow-shape compared with disorder, while if intake pool inside dimension be arranged unreasonable, water
It flows into the preceding flow velocity uniformity of pump and inflow angle can be poor, be also possible to increase the vibration of water pump while reducing pump efficiency.
After adding antihunting device, water flow flows through antihunting device, and the barrier guidance that most of water flow will receive antihunting device is made
With entering water pump, wherein antihunting device surface groove along the bus (circular arc camber bus, oval calotte bus) of antihunting device
Certain buffering can also be provided while playing guide functions for water flow, to reduce water flow loss, also avoid taking air water
The generation of stream.Antihunting device lower half portion is the biggish arc surface of curvature (circular arc camber), can also be water while water conservancy diversion
Stream provides biggish steering space, significantly reduces due to the hydraulic loss that vibration-proof structure obstructs water flow and generates.Antihunting device
Top half is the lesser elliptical arc surface of curvature (oval calotte), elliptical arc surface bus top end point tangent line and antihunting device upper bottom surface
Vertically, elliptical arc surface bus and arc surface bus intersection point are tangent.Water flow outflow arc surface enters elliptical arc surface, final major part water
Stream streamline realizes that vertical horn mouth enters water pump.Small part water flow bypasses antihunting device reflexed after encountering rear wall, fills through vibrationproof
It sets groove effect and finally realizes that preferable inflow angle enters water pump.
By the utility model, antihunting device is arranged immediately below water-inlet horn mouth, is effectively eliminating below oviduct
While attached bottom whirlpool, the horn-like vibration-proof structure bottom of groove type is bigger compared with curvature of curved surface, and the gradient is more slow, more agrees with water flow stream
It is dynamic, reduce hydraulic loss, groove can also more effectively play guide functions, and stream inflow angle is more preferable, and flow velocity is more so that entering to pump
Uniformly, pressure fluctuation situation at water pump can be improved, guarantee water pump safe and highly efficient operation.
It, not only can be with the utility model has the advantages that disappeared whirlpool guide functions well by antihunting device is arranged can play in intake pool
The obvious generation for eliminating attached bottom whirlpool below oviduct, and can play the role of adjusting flow direction-changing, realize water flow inflow angle
More excellent, the preferable inflow condition of the flow velocity uniformity reaches reduction hydraulic loss, improves the effect of pressure fluctuation at water pump.This reality
With new application in pumping plant construction and upgrading, pumping station operation efficiency can be effectively improved, pump installation Vibration Condition is improved.
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 the utility model can be applied and implement, and obtains biggish economic benefit and society
Benefit.
Detailed description of the invention
Fig. 1 is not add antihunting device water flow streamline schematic diagram in intake pool.
Fig. 2 is to add antihunting device water flow streamline schematic diagram in intake pool.
Fig. 3 is antihunting device scale diagrams.
Fig. 4 is antihunting device front view.
Fig. 5 is positive three shaft side figure of antihunting device.
In figure: 1 intake pool, 2 horn mouths, 3 antihunting devices, 4 oval calottes, 5 circular arc cambers, 6 grooves.
Specific embodiment
The utility model is further described below in conjunction with attached drawing and Detailed description of the invention.
It is a kind of based on the horn-like vibration-proof structure of groove type for improving hydraulic stability, including intake pool 1, water pump, on water pump
Oviduct stretch in intake pool 1, and oviduct is placed in one end in intake pool 1 equipped with horn mouth 2；It is set in the intake pool 1
It is equipped with antihunting device 3, and antihunting device 3 is placed in immediately below horn mouth 2；Antihunting device 3 is horn-like, the upper half of antihunting device 3
Part is oval calotte 4, and oval calotte bus top end point tangent line is vertical with 3 upper bottom surface of antihunting device；3 lower half portion of antihunting device
For circular arc camber 5, the curvature of circular arc camber 5 is greater than the curvature of oval calotte 5, circular arc camber bus and oval calotte bus intersection point
It is tangent；It is evenly arranged on the side wall of antihunting device 3 several through oval calotte 4, the groove 6 of circular arc camber 5.
Further, 6 numbers of groove are 6 ~ 8, and antihunting device 3 pours or prefabricated in advance simultaneously with intake pool bottom plate.It is anti-
In vibrating device 3,0.54 ~ 0.72 times of 2 diameter of a height of horn mouth of antihunting device 3；The upper bottom surface diameter of antihunting device 3 is loudspeaker
0.15 ~ 0.35 times of 2 diameter of mouth；The bottom surface of antihunting device 3 is 0.8 ~ 1.2 times of 2 diameter of horn mouth；Oval calotte 4
Oval calotte bus equation are as follows:, wherein a=, b=, D is the diameter of horn mouth 2；The circular arc camber of circular arc camber 5
Generatrix radius is 0.40 ~ 0.50 times of 2 diameter of horn mouth；The width of groove 6 is 2 diameter of horn mouth, the slot of groove 6
It is deep of same size with groove 6.
Antihunting device 3 can pour simultaneously with 1 bottom plate of intake pool, can also be prefabricated in advance.We set, and D is loudspeaker in Fig. 1
Mouth diameter.3 design parameter of antihunting device is as follows:
1), antihunting device 3 it is H high=(0.54 ~ 0.72) D.
2), 3 upper bottom surface diameter D of antihunting device1=(0.15 ~ 0.35) D, D2=(0.8~1.2 )D。
3), 3 oval calotte bus equation of antihunting device are as follows:, wherein a=, b=。
4), 3 circular arc camber generatrix radius R of antihunting device=(0.40 ~ 0.50) D.
5), 3 recess width B of antihunting device=() D, groove depth and of same size, groove number suggestion setting 6 ~ 8.
In use, when water flow flows through antihunting device 3, most of water flow will receive the barrier of antihunting device 3 in intake pool
Guiding function through horn mouth 2, oviduct enters water pump along circular arc camber bus, the oval calotte bus on antihunting device 3,
Wherein, the groove 6 on 3 side wall of antihunting device can also provide buffering while playing guide functions for water flow, to reduce
Water flow loss, also avoids the generation for taking air water stream；The curvature of circular arc camber 5 is greater than the curvature of oval calotte 4, while water conservancy diversion
Biggish steering space can also be provided for water flow, be conducive to adjust flow rate of water flow and direction, water flow is avoided directly to impact, reduce
Due to the hydraulic loss that antihunting device 3 obstructs water flow and generates, the water pressure fluctuation nearby of horn mouth 2 is reduced, abnormal water is avoided
The appearance of pressure fluctuation；
Oval calotte bus top end point tangent line is vertical with 3 upper bottom surface of antihunting device, and circular arc camber bus and oval calotte are female
Line intersection point is tangent, and water flow flows out circular arc camber 5 and enters oval calotte 4, and final major part water flows through horn mouth 2, oviduct enters
Water pump, and when inflow horn mouth 2, the streamline of water flow is vertical with horn mouth 2, and small part water flow is around antihunting device 3 after encountering
Reflexed after wall enters water pump through horn mouth 2, oviduct along the groove 6 on 3 side wall of antihunting device.
Claims (4)
1. a kind of based on the horn-like vibration-proof structure of groove type for improving hydraulic stability, including intake pool (1), water pump, on water pump
Oviduct stretch in intake pool (1), and oviduct is placed in one end in intake pool (1) equipped with horn mouth (2)；
It is characterized in that: being equipped with antihunting device (3) in the intake pool (1), and antihunting device (3) is placed in immediately below horn mouth (2)；
The antihunting device (3) be it is horn-like, the top half of antihunting device (3) is oval calotte (4), oval calotte bus top end point
Tangent line is vertical with antihunting device (3) upper bottom surface；Antihunting device (3) lower half portion is circular arc camber (5), the song of circular arc camber (5)
Rate is greater than the curvature of oval calotte (4), and circular arc camber bus and oval calotte bus intersection point are tangent；The antihunting device (3)
It is evenly arranged on side wall several through oval calotte (4), the groove (6) of circular arc camber (5).
2. according to claim 1 a kind of based on the horn-like vibration-proof structure of groove type for improving hydraulic stability, feature
Be: groove (6) number is 6 ~ 8.
3. according to claim 1 a kind of based on the horn-like vibration-proof structure of groove type for improving hydraulic stability, feature
Be: the antihunting device pours or prefabricated in advance simultaneously with intake pool bottom plate.
4. according to claim 1 a kind of based on the horn-like vibration-proof structure of groove type for improving hydraulic stability, feature
It is: in the antihunting device (3), 0.54 ~ 0.72 times of a height of horn mouth (2) diameter of antihunting device (3)；Antihunting device (3)
Upper bottom surface diameter be 0.15 ~ 0.35 times of horn mouth (2) diameter；The bottom surface of antihunting device (3) is horn mouth (2) diameter
0.8 ~ 1.2 times；The oval calotte bus equation of oval calotte (4) are as follows:, wherein a=, b=, D is horn mouth (2)
Diameter；The circular arc camber generatrix radius of circular arc camber (5) is 0.40 ~ 0.50 times of horn mouth (2) diameter；The width of groove (6)
Degree is horn mouth (2) diameter, the groove depth of groove (6) is of same size with groove (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821074305.7U CN208456927U (en) | 2018-07-09 | 2018-07-09 | A kind of horn-like vibration-proof structure of groove type based on raising hydraulic stability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821074305.7U CN208456927U (en) | 2018-07-09 | 2018-07-09 | A kind of horn-like vibration-proof structure of groove type based on raising hydraulic stability |
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| Publication Number | Publication Date |
|---|---|
| CN208456927U true CN208456927U (en) | 2019-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821074305.7U Active CN208456927U (en) | 2018-07-09 | 2018-07-09 | A kind of horn-like vibration-proof structure of groove type based on raising hydraulic stability |
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| Country | Link |
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| CN (1) | CN208456927U (en) |
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2018
- 2018-07-09 CN CN201821074305.7U patent/CN208456927U/en active Active
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