CN212250603U - Inlet water flow eddy eliminating flow guider - Google Patents

Abstract

The utility model relates to a technical field of water conservancy diversion structure is intake to the pipeline discloses an import rivers divertor that disappears, including the water conservancy diversion post, the water conservancy diversion post is coaxial including reposition of redundant personnel post and spliced pole, the spliced pole is cylindricly, the water conservancy diversion post is whole to be leaks hopper-shaped, the lateral wall of reposition of redundant personnel post is sunken and with the side rounding off of spliced pole to its axis side. The utility model discloses can effectively eliminate the incoming flow and revolve in advance, reduce the fluidic rotation in device rear and vortex, the homogeneity that reinforcing device rear flows is avoided producing recessed liquid level and is leaded to the impeller to expose in the air to improve pipeline entry flow performance.

Description

Inlet water flow eddy eliminating flow guider

Technical Field

The utility model relates to a technical field of pipeline water inlet water conservancy diversion structure, concretely relates to import rivers despin divertor.

Background

In the prior art, a pipeline structure for feeding water in a radial direction and an axial direction is very common, for example, in the existing centrifugal pump for feeding water in the radial direction and the axial direction, a rotating part (such as an impeller driven to rotate by a rotating shaft) is arranged in a pipeline communicated with the centrifugal pump, when the centrifugal pump is used, the pipeline is placed in a water pool containing water, the upper part of the pipeline is usually exposed in air, the impeller is driven to rotate, the centrifugal force generated by the impeller sucks the water in the water pool into the pipeline, the water is sucked into the pipeline in the radial direction and the axial direction, in the water feeding mode, because of the viscosity of fluid, the fluid in front of an inlet of the impeller is driven to rotate together when the impeller rotates, the axial inflow condition in front of the impeller is damaged, suction vortex is generated, meanwhile, the fluid before the impeller performs suction, the liquid level in the pipeline is in a concave state is caused, and because the, the concave liquid level easily causes partial area of the impeller to be exposed in the air, the impeller works on the air to cause a part of air to be sucked into the pump to form complex two-phase flow, thus the power of the impeller is insufficient, the fluid generates hydraulic excitation to induce fluid noise, the running stability of the impeller is reduced, the working performance and the action of the impeller and the safety of a pump system are affected, the outlet pressure generated by the pump is reduced, and the pump performance is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an import rivers melt divertor that disappears can avoid producing the recessed condition of liquid level and lead to the impeller to expose in the air to improve pipeline import flow property.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an import rivers flow director that disappears whirlpool, includes the water conservancy diversion post, the water conservancy diversion post is coaxial including reposition of redundant personnel post and spliced pole, the spliced pole is cylindricly, the water conservancy diversion post is whole to be leaks hopper-shaped, the lateral wall of reposition of redundant personnel post is sunken and is connected the side rounding off of spliced pole to its axis side.

The principle and the advantages of the scheme are as follows: in the using process of the fluid director in the technical scheme, the flow guide column is arranged in a pipeline for water inlet and is coaxially matched with the pipeline, the flow guide column can play a role of blocking liquid entering from an inlet of the pipeline, and the whole flow guide column is funnel-shaped, the outer side wall of the flow division column of the flow guide column is sunken towards the axial line side of the flow guide column and is in smooth transition with the side surface of the connecting column, so that the outer side of the flow division column is of a cylindrical structure with an arc wall surface, the flow guide column has a good flow guide effect on the liquid, the flowing direction of the liquid can be changed, the liquid entering from the inlet of the pipeline in the radial direction is changed into a state of flowing downwards in the axial direction of the pipeline, the liquid entering from the inlet can be turned and buffered, the collision impact among the liquids entering from different inlets is avoided, the liquid can stably flow, the vortex is avoided, and the pre-, the problem that the impeller is exposed to air due to the fact that the free liquid level in the pipe is concave is effectively solved.

In addition, the fluid director in the technical scheme can enable water flow to be more smoothly introduced into the pipeline, greatly reduces the hydraulic loss of the inlet of the pipeline, improves the stability of the whole water inlet structure, and improves the flowing performance of the inlet of the pipeline.

Simultaneously because the guide post is installed in the pipeline after, after the guide post is put in the pond that is equipped with water along with the pipeline, and make below the guide post all be located the liquid level below in pond, the guide post separates the import with the liquid of import top this moment, make the import be located the liquid level below, such setting can reduce the influence to the liquid that is located the import top, avoid the liquid of guide post top to produce the swirl, thereby the effectual defect of avoiding leading to the liquid level to be recessed because of the impeller rotation produces the swirl among the prior art and making the impeller expose in the air, and then guaranteed the normal operating behavior and the job stabilization nature of impeller.

Preferably, as a modification, the distribution column and the connecting column are integrally formed.

So set up production manufacturing simple and convenient more, compare in dividing reposition of redundant personnel post and spliced pole into two mutually independent parts, can make the structure of whole diversion post more stable among this technical scheme, and the shaping of being convenient for is made.

Preferably, as an improvement, a plurality of guide plates are fixedly connected to the outer side wall of the guide column, and the plurality of guide plates are uniformly arranged along the circumferential direction of the guide column.

So set up, a plurality of guide plates have separated into a plurality of independent spaces with pipeline internal partitioning, and the guide plate can play the effect of reposition of redundant personnel to the liquid that gets into in the pipeline from the import, makes the liquid that gets into by different imports can be more even enter into adjacent guide plate and form the space in, realizes evenly shunting to guarantee the despinning (eliminate the import and revolve in advance) effect, thereby can further ensure the steady operation state of impeller and guarantee the ability to flow through of import.

Preferably, as an improvement, a plurality of groups of guide grooves are formed in the outer side wall of the guide column, the guide grooves longitudinally extend along the outer side wall of the guide column, and the shape of each guide groove is the same as the outline shape of the outer side wall of the guide column.

Due to the arrangement, the diversion trench and the diversion plate are matched with each other, so that the pre-swirling of the inlet can be greatly eliminated by reasonable matching of the diversion plate and the diversion trench on the premise of ensuring the overflow capacity of the inlet and smaller hydraulic friction loss of liquid, the diversion trench can play a role of auxiliary diversion, and the diversion trench and the diversion column together smoothly and smoothly introduce liquid flowing in the radial direction of the inlet into a pipeline and smoothly change the flowing direction into the axial direction; in addition, the setting of guiding gutter can play the effect of supplementary water conservancy diversion among this technical scheme, owing to need ensure that liquid can follow in the import admission line, and can be smooth flow, therefore the guide plate should not set up too much, because the guide plate sets up too much, can produce to liquid flow and crowd and the on-way resistance loss of following, thereby lead to liquid flow unobstructed and unnecessary energy loss easily, and the setting of guiding gutter can play the effect of water conservancy diversion jointly with the guide plate among this technical scheme, under the condition of not addding the guide plate, the inlet structure of the guiding gutter that sets up among this technical scheme, can be better to the water conservancy diversion effect of fluid.

Preferably, as a modification, each group of the guide grooves is respectively located between two adjacent guide plates.

So set up, can make the liquid that gets into between two adjacent guide plates all obtain better water conservancy diversion effect.

Preferably, as a refinement, the number of the flow guide grooves in each group is at least two.

So set up and to play better water conservancy diversion effect to the liquid that gets into in the pipeline from the import, reduce the collision between the liquid to reduce the hydraulic loss of liquid.

Preferably, as an improvement, the guide post is coaxially provided with a shaft hole, and a rotating shaft for driving the impeller to rotate is inserted into the shaft hole and is in clearance fit with the shaft hole.

So set up, the clearance between the shaft hole of pivot and divertor can play sealed effect, prevents that the top liquid is too much inhaled and form the recessed liquid level to this structure can also play auxiliary bearing's effect, makes the shaft hole support the pivot spacing, and can make the pivot rotate around its axis is steady.

Preferably, as an improvement, an annular groove is formed in the side wall of the shaft hole, and the shaft hole and a rotating shaft for driving the impeller to rotate form a labyrinth seal.

According to the technical scheme, the labyrinth seal mode is adopted between the shaft hole and the rotating shaft, the sealing effect is good, the rotating shaft can be ensured to normally rotate, the sealing effect can be realized, and the influence on liquid above the fluid director is reduced.

Preferably, as an improvement, the side wall of the shaft hole is provided with a spiral thread groove, and the shaft hole and a rotating shaft for driving the impeller to rotate form a spiral seal.

This technical scheme provides another kind of sealed form between shaft hole and the pivot, and the sealed effect of this sealed form is better, can ensure the normal rotation of pivot to can also realize sealed effect, avoid the divertor top liquid too much by the formation recessed liquid level of inhaling.

Preferably, as a modification, the top end periphery of the guide pillar is integrally formed with a flange.

So set up, the setting of flange forms the echelonment with the water conservancy diversion post, is convenient for install the import rivers racemization divertor in this technical scheme in the pipeline, and this structure makes the installation form simpler.

Drawings

FIG. 1 is a front view of a first embodiment of an inlet flow vortex elimination deflector of the present invention;

FIG. 2 is a longitudinal sectional view of a first embodiment of an inlet flow vortex elimination deflector of the present invention;

fig. 3 is a schematic view showing a state of a guide post installed in a pipe according to an embodiment of the vortex-eliminating flow director for inlet water flow of the present invention;

FIG. 4 is a perspective view of a second embodiment of the vortex eliminating deflector for the inlet water flow of the present invention;

FIG. 5 is a longitudinal sectional view of a second embodiment of an inlet flow vortex elimination deflector of the present invention;

FIG. 6 is a perspective view of a third embodiment of an inlet flow vortex elimination deflector of the present invention;

fig. 7 is a bottom view of a third embodiment of the inlet flow vortex elimination deflector of the present invention;

FIG. 8 is a schematic view of a sealing structure between a shaft and a shaft hole in the fourth embodiment of the vortex eliminating deflector for incoming water flow of the present invention;

fig. 9 is a schematic view of a sealing structure between a fifth central rotating shaft and a shaft hole of an embodiment of the vortex eliminating deflector for incoming water flow of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises a guide column 1, a flange 2, a shaft hole 3, a guide plate 4, a rotating shaft 5, a connecting column 6, a flow dividing column 7, a guide groove 8, a pipeline 9 and an inlet 10.

Example one

The embodiment is basically as shown in the attached figures 1 and 2: the utility model provides an import rivers despinning divertor, including guide post 1, guide post 1 has seted up shaft hole 3 along its axial, guide post 1 includes coaxial coupling's reposition of redundant personnel post 7 and spliced pole 6 in this embodiment, guide post 1 is whole to be leaks hopper-shaped in this embodiment, 7 lateral walls of reposition of redundant personnel post are sunken to its axis side and with spliced pole 6 side rounding off, the both sides of arbitrary one longitudinal section of reposition of redundant personnel post 7 are the circular-arc of one fourth of mutual symmetry in this embodiment, thereby make the periphery of reposition of redundant personnel post 7 have convex wall, spliced pole 6 and 7 little end fixed connection of reposition of redundant personnel post, the one end fixed connection that spliced pole 6 and 7 diameters of reposition of redundant personnel post are minimum promptly, spliced pole 6 and 7 integrated into one piece in this embodiment, such setting can make the holistic structure of guide post 1 more stable, and make things convenient for the shaping manufacturing more.

The top end periphery of the splitter column 7 is integrally formed with a flange 2, so that a step shape is formed between the flange 2 and the splitter column 7.

As shown in fig. 3, in use, the inlet water flow vortex elimination deflector in this embodiment needs to be integrally matched with a pipeline 9 for water inflow, an inlet 10 for water inflow into the pipeline 9 is formed in the side wall of the pipeline 9, and an annular boss is formed on the inner side wall of the pipeline 9 and located above the inlet 10, specifically, the whole deflector column 1 is inserted into the pipeline 9, the flange 2 at the top end of the deflector column 1 is placed and clamped on the annular boss in the pipeline 9, so that the detachable matching relationship between the deflector column 1 and the pipeline 9 is realized, and the annular boss in the pipeline 9 plays roles of supporting and limiting the deflector column 1.

The impeller is installed in the pipeline 9, a rotating shaft (not shown in the figure) is coaxially arranged in the shaft hole 3 in a penetrating manner and is used for connecting the impeller, and a gap is reserved between the rotating shaft and the shaft hole 3, so that the rotating shaft and the shaft hole 3 are in clearance fit.

The pipeline 9 is usually located in the pool filled with water, and the whole diversion column 1 is located below the liquid level, so that the liquid level in the pool is higher than the whole diversion column 1, when the impeller rotates and sucks the outside water into the pipeline, because the diversion column 7 in the embodiment has the arc-shaped wall surface, under the diversion action on the liquid entering from the inlet 10, the water flow direction at the inlet 10 and the whole diversion column 1 can be changed, the liquid entering in the radial direction is changed into axial flow, and the diversion column 7 can ensure that the liquid enters the pipeline smoothly and smoothly, so that the mutual collision generated between the water flows entering from different inlets 10 of the pipeline 9 is reduced, the stable flow of the fluid is ensured, the unbalanced radial force generated by the erosion and the collision of the water flow on the rotating shaft can be reduced, and the hydraulic flow loss, the hydraulic flow loss and the water flow loss of a distance from the inlet 10 to the lower part of the diversion column 1 are greatly reduced, Protecting the shafting and improving the stability of the shafting.

In addition, in this embodiment after guide post 1 installs in pipeline 9, can separate import 10 and the liquid of import 10 top to reduce the influence to being located the liquid of guide post 1 top, and then the effectual liquid of avoiding guide post 1 top produces the swirl and leads to the liquid level to be sunken and produce the condition of sucking, and then avoid the impeller to expose in the air and influence its performance.

Since the liquid entering from the inlet 10 is guided by the flow dividing column 7 to change the flow direction, the pre-rotation force at the inlet 10 is eliminated, and the condition that the liquid level is concave is avoided.

Example two

As shown in fig. 4, an inlet water flow deswirler is different from the first embodiment in that: the periphery of the flow guide column 1 is welded and fixed with four guide plates 4, the four guide plates 4 are uniformly distributed along the circumferential direction of the flow guide column 1, the inlet of the pipeline matched with the flow guide column 1 in the embodiment is also provided with four, and the four inlets are uniformly distributed along the circumferential direction of the pipeline. In this embodiment, the one end of guide plate 4 connection at guide post 1 is laminated with reposition of redundant personnel post 7 and spliced pole 6 comprehensively to the outline that makes the one end that guide plate 4 and guide post 1 are connected is the same with the outline of guide post 1, thereby makes guide plate 4 and guide post 1 whole can realize closely laminating, both conveniently connects, and the effect of water conservancy diversion and reposition of redundant personnel is better.

In this embodiment, a fillet of 2mm is formed between the guide plate 4 and the guide column 1, and a fillet of 2mm is also formed on the long side of the end of the guide plate 4 far away from the guide column 1. Such setting is better to the water conservancy diversion effect of liquid, can make more smooth and easy entering pipeline of liquid to reduce the striking to liquid, reduce hydraulic loss.

A rotating shaft 5 for driving the impeller to rotate is coaxially inserted into the shaft hole of the flow guiding column 1, as shown in fig. 5, the rotating shaft 5 is in clearance fit with the shaft hole, the clearance between the inner side wall of the shaft hole and the rotating shaft 5 in this embodiment is 0.3-0.5mm, the hole wall of the shaft hole in this embodiment is a smooth plane, and forms a common plane seal with the rotating shaft 5, a long and thin clearance is formed between the rotating shaft 5 and the shaft hole to play a role of sealing, so as to prevent the liquid above the flow guiding column 1 from being excessively sucked to form a concave liquid level, and the structure can play a role of an auxiliary bearing, so that the shaft hole supports and limits the rotating shaft 5, so that the rotating shaft 5 rotates around the axis thereof stably, thereby not only ensuring the smooth rotation of the rotating shaft 5, but also forming a water film between the rotating shaft 5 and the shaft hole in the rotating process to play, the rotation of the rotating shaft 5 is smoother.

The setting of guide plate 4 in this embodiment, can be in guide post 1 insert the pipeline after, separate into four spaces with the pipeline, because correspond on the pipeline and be equipped with four imports, therefore four guide plates 4 that the embodiment set up can play the effect of reposition of redundant personnel to the liquid that gets into from the pipeline import, make in the even entering pipeline of liquid, the water conservancy diversion effect to liquid is better, and can effectually eliminate the pipeline import and prerevolve, guarantee pipeline import flow capacity, can further avoid the liquid production swirl of pipeline import department and guide post 1 department, thereby the recessed situation of liquid level has further been avoided.

EXAMPLE III

As shown in fig. 6, an inlet water flow deswirler is different from the second embodiment in that: the outer side wall of the guide column 1 is provided with a plurality of groups of guide grooves 8 along the axial direction, each group of guide grooves 8 is respectively positioned between two adjacent guide plates 4, and the number of the guide grooves 8 is at least two in the embodiment. As shown in fig. 7, four sets of flow guide grooves 8 are provided, and each set of flow guide grooves 8 includes two flow guide grooves. As shown in fig. 6, the diversion trench 8 is a through trench structure that is through from top to bottom, that is, two ends of the diversion trench 8 are respectively through with the top end of the diversion column 7 and the bottom end of the connection column 6.

In this embodiment, the diversion trench 8 extends longitudinally along the outer side wall of the diversion column 1, so that the shape of the diversion trench 8 is the same as the profile shape of the outer side wall of the diversion column 1, and the diversion trench 8 also has a circular arc section and a straight line section, thereby having better diversion effect on liquid. When in use, the whole flow guiding column 1 is placed in a pipeline, is placed and clamped on the annular boss of the pipeline through the flange 2 on the flow guiding column 1 to realize the detachable matching installation with the pipeline, when the impeller in the pipeline rotates and sucks liquid into the pipeline, at the moment, the liquid entering the pipeline from the inlet of the pipeline can guide the liquid entering the pipeline in the radial direction under the action of the splitter column 7, so that the flow direction of the liquid is changed, the liquid is changed into axial flow from the radial flow, and the flow dividing column 7 can make the liquid smoothly enter the pipeline, reduce the mutual collision between the water flows entering from different inlets of the pipeline, thereby ensuring the stable flow of the fluid, avoiding the liquid at the inlet of the pipeline and the guide column 1 from rotating to generate vortex, therefore, the situation that the liquid level is concave downwards to generate suction is effectively avoided, and the phenomenon that the performance of the impeller is influenced because the impeller is exposed in air is further avoided.

Meanwhile, the combination of the guide plate 4 and the guide groove 8 arranged on the guide column 1 can effectively eliminate the pre-swirling of the inlet of the pipeline, and the reasonable matching of the guide plate 4 and the guide groove 8 can greatly eliminate the pre-swirling of the inlet of the pipeline on the premise of ensuring the overflowing capacity and smaller friction loss of the inlet of the pipeline, so that the working stability of the water inlet structure of the whole pipeline is effectively improved.

Example four

As shown in fig. 8, the water inlet structure with the racemization diversion function is different from the first embodiment in that: pivot 5 and shaft hole clearance fit in this embodiment, and the annular groove has been seted up to the shaft hole lateral wall in this embodiment, form labyrinth seal with pivot 5, provide another kind of sealed form between pivot 5 and the shaft hole in this embodiment, it is sealed effectual, and can play auxiliary bearing's effect, ensure the rotation that pivot 5 can be normal, and can also realize sealed effect, avoid 1 top liquid of water conservancy diversion post too much by the suction and form recessed liquid level.

EXAMPLE five

As shown in fig. 9, the water inlet structure with the racemization diversion function is different from the first embodiment in that: pivot 5 and shaft hole clearance fit in this embodiment, and the screw thread groove that the spiral set up was seted up to the shaft hole lateral wall in this embodiment, form spiral seal with pivot 5, provide another kind of sealed form between pivot 5 and the shaft hole in this embodiment, its is sealed effectual, and can play auxiliary bearing's effect, ensure the rotation that pivot 5 can be normal, and can also realize sealed effect, avoid 1 top liquid of guide post too much to be inhaled and form recessed liquid level.

The above description is only an example of the present invention, and the detailed technical solutions and/or characteristics known in the solutions are not described too much here. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (10)

1. An inlet water flow eddy eliminating flow guider is characterized in that: including the flow guide column, the flow guide column is coaxial including reposition of redundant personnel post and spliced pole, the spliced pole is cylindricly, the whole funnel shaped that is of flow guide column, the lateral wall of reposition of redundant personnel post is sunken and with the side rounding off of spliced pole to its axis side.

2. The inlet water flow de-swirling flow deflector of claim 1, wherein: the splitter column and the connecting column are integrally formed.

3. The inlet water flow de-swirling flow deflector of claim 1, wherein: a plurality of guide plates are fixedly connected to the outer side wall of the guide column and are evenly arranged along the circumferential direction of the guide column.

4. The inlet water flow de-swirling deflector of claim 3, wherein: the outer side wall of the guide column is provided with a plurality of groups of guide grooves, the guide grooves longitudinally extend along the outer side wall of the guide column, and the shape of each guide groove is the same as the outline shape of the outer side wall of the guide column.

5. The inlet water flow de-swirling deflector of claim 4, wherein: each group of the guide grooves is respectively positioned between two adjacent guide plates.

6. The inlet water flow de-swirling deflector of claim 5, wherein: the number of each group of the flow guide grooves is at least two.

7. The inlet water flow de-swirling flow deflector of claim 1, wherein: the guide post is coaxially provided with a shaft hole, and a rotating shaft for driving the impeller to rotate is inserted into the shaft hole and is in clearance fit with the shaft hole.

8. The inlet water flow de-swirling deflector of claim 7, wherein: the side wall of the shaft hole is provided with an annular groove, and the shaft hole and a rotating shaft for driving the impeller to rotate form labyrinth seal.

9. The inlet water flow de-swirling deflector of claim 7, wherein: the side wall of the shaft hole is provided with a thread groove which is spirally arranged, and the shaft hole and a rotating shaft which drives the impeller to rotate form spiral sealing.

10. The inlet water flow de-swirling flow deflector of claim 1, wherein: the periphery of the top end of the flow guide column is integrally formed with a flange.

Images