CN2050100U - Rotary centrifugal type axial-flow pump - Google Patents
Rotary centrifugal type axial-flow pump Download PDFInfo
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- CN2050100U CN2050100U CN 87213190 CN87213190U CN2050100U CN 2050100 U CN2050100 U CN 2050100U CN 87213190 CN87213190 CN 87213190 CN 87213190 U CN87213190 U CN 87213190U CN 2050100 U CN2050100 U CN 2050100U
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Abstract
The utility model belongs to a rotary centrifugal type axial-flow pump of a fluid delivery conveying machine. The rotary centrifugal type axial-flow pump is characterized in that a circular ring type movable pipe shell connected with the rotary auxiliary of the pump shell is arranged, and the circular ring type movable shell of the pipe is provided with blades which correspond to the center of an overflowing section and can move along the radial direction of the pipe. The movable pipe shell drives the blades to rotate, and the length of the blade, which extends in the pipe, is matched with the rotary speed of the blades. Fluid can obtain axial acceleration and the speed of a rotation angle in the circle tangent direction after flowing through the action zone of the blades, no obstacle from the mechanical component exists in central zone, and pressure forms a negative pressure zone corresponding to boundary conditions. Therefore, a plurality of pumps taking wind as the source of power can be connected in series to work.
Description
Rotary and centrifugal type axial flow pump of the present invention is to belong to make liquid obtain the machinery that energy is carried.
Make liquid obtain energy in the liquid course of conveying, the working principle of the pump that its performance is good, efficient is high is divided into centrifugal and axial flow.
According to the shape of the numerical value and the blade of specific speed, can make centrifugally toward the axial flow transition, can form mixed flow pump centrifugal and axial flow coexistence working state in transition region.Yet the Flow Field Distribution of liquid in pump case is that liquid only circulates near the area part of housing, and the core in the housing is that the center region (the center band in flow field) of flow section is because there is rotor shaft, so do not have flow axis to passing through.
On structure construction, rotatable impeller (being rotor) and fixed casing are arranged.Impeller is fixed in the rotating shaft that the center on the space is provided with in the casing.Performance parameter does not change with the extraneous factor at inflow and outflow opening place in the operating range that can be permitted.
When working, this series connection of pumps require flow to equate, and should not be above two.Institute's pump performance curve that requires was identical when other shortcoming was joint work.
Purpose of the present invention:
1, can carry out the series connection of many water pumps, and the effect of joint work is not reduced.
2, make according to the performance of pipe-line transportation system that plant capacity, the performance of joint work obtain flexibly, better matching, the level that reaches the equipment joint work of prior art requires and power is comparatively speaking little.
3, according to satisfying
, under the prerequisite of requirement, the pump that is cascaded is can flow unequal.
4, under the series operation operating mode, can be convenient to regulate.The performance parameter of every water pump can help regulating artificially.
5, the energy loss little (being that kinetic energy and static pressure loss of energy are little) in the pump housing.
6, can use wind energy and carry out work as power source.In whole transporting system, the equipment of series operation can be adjusted to the coupling of the required specified requirement of system voluntarily according to self situation.
7, fluid still can lead directly to and flows through in the pump housing after pump is out of service, and loss of head (energy loss) is small.So also can avoid the generation of water hammer.
8, can accomplish the technical requirements (or effect) of starting or parking under dead head condition voluntarily.
In order to realize the purpose of above elaboration, taked the tubular pump housing, its internal diameter can be identical with the internal diameter of institute nozzle belt.The tubular pump hull shape is a short pipe, is divided into three sections on its length.The pump case section on both sides can be by the aerofoil profile roker phase mutual connection that had on the outer surface admittedly together.These two sections fixedly the two ends and the transporting system pipeline of pump case section link.
At two sections fixedly in the middle of the pump case section, the movable shell section of one section tubulose of folder.Movable shell section connects with fixedly adopting revolute pair between the pump case section, and adopts rubber ring to carry out the sealing at place, slit.
The parts of these three sections pump housings want internal diameter identical after connecting, and flow channel for liquids is that the flow field is straight-through mutually, forms Cylindrical object.On movable shell section upper blade is set, the number of blade can be used as according to determining according to the size and the required performance of the pump housing.
Position relation between blade and the movable shell is that the radial direction upper blade of justifying (being that the flow section center is circle) can move with respect to movable shell with the tube hub at movable shell promptly.The surface of contact place of blade and movable shell adopts and is fixed on that rubber phase engages seal approach every playing on the movable shell, with liquid proof seepage.Also can adopt other sealing technique, device.Also can be provided with between blade and the movable shell and accompanying drawing on technology different another technological method constitute position relation between them.As, on the wall of movable shell outside, establish one and promptly be parallel to a bolt of the radial line of its circle, and connect solid on movable shell perpendicular to the shell surface of contact near the blade place.The blade-section that is exposed on the wall of movable shell outside is made a cross bar perpendicular to the round radial line of movable shell, and cross bar also connects solid with blade.The other end of cross bar contacts with bolt.Make and the match nut of manual handle of bolt, the termination of nut and cross bar forms the structure of revolute pair constraint.
Thereby by handle nut is moved drive on bolt make cross bar pipe make upper and lower translation in the radial direction, determined the relation between blade and the movable shell.
The mechanism that angle between blade and the adjustable pipe package axle can be regulated also can be set.
Movable shell outer wall is set with the construction element that can carry out transmission with motor.
Blade in pump case with tubular axis to the fluid that flows through can be at an angle (as miter angle etc.).
The definite of the projected length of blade on tubular axis should satisfy the pump performance requirement.Make fluid particle (blade zone of action) the time can obtain centrifugal force radially, and obtain enough angular velocity by this section projected length with certain flow rate.Fluid particle is made axial rotary and is flowed.
Movable shell makes by the acceleration in the fluid acquisition axially of the blade zone of action and divides speed and the branch of centrifugal acceleration radially speed under the drive of motor.So just caused in the pump case center region on the flow section to produce in the axial direction not have machinery to hinder, negative pressuren zone for this zone boundary.
The advantage that technology of the present invention is different from prior art is:
1, fluid is to flow through in the pump housing on the rectilinear direction basically.Fluid is to increase energy on the direction that flow direction is constant and acquisition is consistent with flow direction in mechanical device.
2, with the connecting of other pump in, because of the pump center is that the center can be adjusted into and do not have machinery and hinder on the flow section, can form negative pressuren zone, this is inhaled into the fluid of pump front end and flows through the pump housing in pressure difference.Like this, just form two-part stream district in the pump housing, be subjected to the negative pressuren zone of mechanism Liu Qu and the effect of nothing machinery.According to the size variation of the length of negative pressuren zone on axis, can be adjusted in this zone and flow through the flow in the movable shell and go out the flowing water head with the action radius that directly makes progress.It is boundary parameter that the negative pressuren zone size variation is regulated one of the characteristic of pump performance and condition of decision negative pressuren zone parameter automatically, so but also cooperation of the pump duty difference that can make series connection, and effect can not descend yet.
3, because the flow of this pump is variable parameter, goes out the flowing water head and also can change with flow.Like this, under different dynamic conditions, also can work, mate, can under the condition of power variable force, carry out the cooperation of pump.
4, the pump of series operation requires flow identical in the prior art, and the pump performance of connecting with regard to making like this is restricted.Technology of the present invention is a straight-through tube shape because pump cavity is identical with institute connection pipeline, and the flow of pump is variable in addition.So, its advantage for the pump of series connection in the lift of required system requirements, the requirement of second level pump capacity can be little during than isolated operation, promptly the power of pumps in series is littler than the pump of prior art.
5, this pump can utilize the power of wind energy as pump, and the connection pump operation plays energy-saving effect.
6, because pump housing flow field be characterized as a straight-through cylindrical body, so the hydraulic loss in this pump housing is little.
7, because blade radially can be adjusted change at it on movable shell section, this can cause pump performance to be adjusted flexibly.
8, carry out many All-China Federation of Taiwan Compatriots pump work, and effect can not descend, (it is also feasible to regulate power equipment) easy to adjust.
9, in the pump housing, do not carry out the transformation of dynamic and static pressure, the hydraulic loss when not transforming as the centrifugal pump fluid.
10, floor space is little, arranges simple.
Description of drawings.The designed water pump of this accompanying drawing mainly describes as power and as main with wind energy.
B-B dissects the whole-cutaway view at position on Fig. 2 that the 1st page of Fig. 1 of accompanying drawing is the 2nd page of upper pump casing of accompanying drawing.
The 2nd page of Fig. 2 of accompanying drawing is the sectional view that A-A dissects the position on the 1st page of Fig. 1 of accompanying drawing.
As shown in drawings, pump housing inner cavity be by preceding pipe shape fixedly on pump case (24), the stage casing the movable shell (5) of circular shape, back pipe shape fixedly the cylinder type inner chamber body that constituted of pump case (20) be the flow field.
On movable shell (5), be provided with four (lobe numbers what can according to performance variations) sliding blades i.e. (1) shown in (on the flow section), (6), (9), (13) on Fig. 1 that pipe radially dissects, these blades are perpendicular to the pipe shaft axis (being the fluid flow direction line) of adjustable pipe housing (5), the centre symmetry line of every blade (promptly as shown in Figure 1 at the pipe diameter of movable shell along on the long line) on the radial line of circle, and the centre symmetry line of four blades is all on the plane of a flow section.Its another characteristics be the symmetrical arrangement of blade on movable shell (5) be per two blades centre symmetry line in a straight line, and every blade can be done parallel move (being mechanical displacement) on this straight line.Blade can be selected the little rigid material of the good friction factor of antiseptic property for use.The blade that one symmetry is arranged is a linear leaf, and another symmetrical blade is two short blades, and linear leaf can be stretched and reach tube hub, and short blade can be stretched and reach the position that can touch linear leaf in the pipe is the limit.The common structure characteristics of four blades is that every blade is a cuboid, limit in pipe, be a circular arc type when position of blade as shown in Figure 1 and movable shell (5), shape relation, and match with movable shell (5) internal chamber wall present position shape, can make the energy loss of adjustable pipe shell (5) inner fluid small like this, approach zero.With the pairing blade edge outside movable shell (5) wall in circular arc type one side on the blade, make the L type.
Another ultimate state that is blade with respect to the pipe centre point motion of movable shell (5) shown in Figure 1.
In order to seal the slit between blade and the movable shell (5) and be arranged on rubber sealing strip (4), (7) between blade and the movable shell (5) corresponding, etc.
Rubber sealing device and movable shell (5) edge are solid.Also can select O type sealing rubber ring for use.
With the blade top margin be join rope (2), (11), (15) solid and slightly relatively centre symmetry line of L type limit, etc.
Rope is through roller (3), (12), (14), wait twine the back rigidity be connected on moving runner (18) on overhanging roker (8), (19).
Roller can the revolute pair form be connected on the movable shell (5).Roller is arranged on the outer wall place near blade and movable shell (5).
Roker on short blade (6), (13) and the moving runner (18) and the coupling arrangement between the movable shell (5) all are same as linear leaf, and the rope (15) of different is short blade etc. are unequal with the rope lengths of linear leaf.Make linear leaf can stretch the tube hub that reaches movable shell (5) in order to solve under the effect of moving runner (18) by rope, short blade then need be at the pipe internal fixation in the limit position of an elongation (as previously mentioned), and the equal in length of the elongation in linear leaf and short blade before this working state are managed is also synchronous.Must take to mend long measure to the rope of short blade according to these two conditions, enable to cooperate the rotation of moving runner (18) can obtain and equate with the action length of linear leaf rope.
According to above argumentation, an end that adopts a thin steel bar (16) connects solid by hole on the roker of moving runner (18) (promptly carrying out sliding pair with roker on rope connecting direction, position connects) with rope (15).The other end rigidity of thin steel bar (16) connects a solid dome, at dome between the roker and be enclosed within a compression spring (17) on the thin steel bar.Thin steel bar (16) movable distance F should be able to satisfy the length that length that the F dimensions length adds rope (15) equals the linear leaf rope.
Shown in Figure 2 on the 2nd page in accompanying drawing.
Moving runner (18) and movable shell (5) placement configurations relation is for moving runner (18) extends the center of movable shell (5) in the axial length section by the roker that perpendicular rigid with it connects.Be arranged on this central segment and be located at the slide body (10) that coincides together with the pipe radial line in the groove on the movable shell (5), the slide body of galleyproof type (10) etc.s connect admittedly with roker.Like this, causing moving runner (18) and movable shell (5) to form revolute pair connects.
Preceding fixedly pump case (24) and the back fixedly connection between the pump case (20) are to rigidly fix together by pump cover (28) and fixing bolt (26), (27) etc.Fixedly pump case connects with piping flange.
Movable shell (5) and the forward and backward bearing type that fixedly adopts between the pump case constitute the revolute pair constraint.Can make the butt joint back in the connection place and form groove, establish sealing rubber ring (23) and, under the compressing of closing cap (22), seal tight for oily filler (21).
One spring sheet of collapsed shape (25) by compression is set at the back side that rope one side is arranged on the blade, and its upper end is solid with blade tip L type edge joint, and the lower end is fixed on the movable shell (5).
Its working principle of water pump of the present invention is a liquid when flowing in the pump housing by the direction of arrow shown on Fig. 2, the branch speed of an acceleration obtain on its flow direction promptly axially through the blade active region on.In addition, in flowing through short time of blade active region, fluid will be subjected to the turning effort of blade to influence the acceleration of an angular velocity that carries out the circumference flowing state.So, after fluid particle flows through the blade active region, will obtain centrifugal force and make radially centrifugal motion, at this moment the flowing state of tube fluid be the helical flow on axially, the fluid particle flow velocity in the axial direction at close tube wall place will be greater than the tube hub place.During this state, the center region in the pump housing on the flow section forms the negative pressuren zone with respect to the fluid state parameter before the pump housing of flowing through.
According to the working principle of said pump, blade will be formed with the location status of certain angle f with tube's axis, and when rotating in blade extends the pump housing and by arrow shown in Figure 1, blade will cut liquid stream.As shown in Figure 2, blade rotation makes the particle O in the fluid be subjected to cutting and enters the blade active region, obtains an axial speed ν under the promotion of blade
1With the angular velocity ν on circle is tangential
2, determine ν
1And ν
2The numerical value of these two component velocities both can have been determined the technical performance of required pump.Just can determine the size of the projected length that the size of angle f of blade and axial line and blade should be on axial line according to this condition.
Along with the particle O prolongation of time in the blade active region, will obtain energy and make the accelerated motion situation.
For the centrifugal motion effect of each particle on the effect that improves the blade convection cell and the fluid, can make the L shaped shape of angle to the blade edge that stretches to the pump chamber center, to help or to cause the centrifugal motion of each particle of fluid greater than an angle of 90 degrees.
The design of blade shape is in order to make better a negative pressuren zone to be arranged in the pump housing in a word, or improves the efficient of pump.
When transmission of power caused on the moving runner (18), moving runner (18) rotated by direction that arrow is marked under the restriction of the last concave groove of movable shell (5), and the rope that is fixed on the roker is subjected to pulling force.Under the roller restriction, pulling force is by rope transfer function centripetal force radially to the blade L type top margin, when the rope pull that acts on blade L type top margin and folded type spring sheet (25) the outward radial elastic force effect on this limit of acting on equated, blade stopped to drive near procedure to putting in of pipe center.At this moment, pulling force all acts on the movable shell (5) by roller, pulling force has produced a moment of rotation at the component on tangential on the circle with respect to the pipe center, and this moment will make movable shell (5) follow moving runner (18) and rotate synchronously, drive the blade rotary work that puts in the pipe.
Because of the elastic force and the compression distance of folded form spring sheet is an inversely prroportional relationship, the rotational speed of moving runner (18) and the pulling force relation in direct ratio that acts on the rope.So blade concerns the pulling force size corresponding relation in direct ratio that will be subjected to the rotating speed and the rope of moving runner (18) to the position that puts in the center of circle, and can automatic corresponding change.
Yet along with blade puts in the size of the angular velocity of rotation of the size of pump housing inner chamber and blade, act on resistance opposite with the moment of blade sense of rotation on the blade also increases thereupon.Resistance is also with the variation big or small in direct ratio of the turning effort moment of moving runner (18).Such advantage can make under not adjusting situation, the very little surface friction drag that has only between movable shell and the fluid of drag when pump begins to start, prolongation drag with the starting time progressively increases, and this can make not overload operation of power source, avoids water attack to be convenient to starting and even acceleration change again.
As shown in Figure 2, when certain distance carries out work in blade stretches into pump chamber, make the fluid particle that enters the blade active region obtain axially to divide fast ν
1Be angular velocity ν for the branch speed of the required circle of the negative pressuren zone that the pump chamber center region is produced on tangential
2In addition, according to drag with put in the magnitude relationship (described in previous paragraphs) of pump housing intra vane, institute determine the rotating speed of its blade should be preferably and blade put in the interior length of pump cavity and be inversely proportional to.That is the blade of working state speed ν that its fluid particle is produced at this moment,
1Should be greater than the rate of flow of fluid of (being pump housing inducer) in the pipeline, and put in the pump chamber yardstick with blade and be inversely proportional to.Angular velocity ν
2Should be able to make the generation of the centre area on flow section negative pressuren zone in the pump housing.ν
2Put in blade that yardstick is inversely proportional in the pump chamber (comparatively speaking).
So, should make the blade rotational speed height satisfy aforementioned condition under the situation little at the power of power source, that rotating speed is low; Should make the blade relative rotation speed low under the situation that power at power source is big, rotating speed is high, the drag that blade obtains is big, and at this moment fluid goes out the flowing water head height.
For this reason, under wind-force is used as power the source situation, in order under permission rated power, to work, for making each connection pump housing under optimum Working, for the size according to wind-force all can reach optimum condition, and to there be one to need the clutch speed-changing regulator of on-line working with pump.
The L of blade type top margin establish between the movable shell two-stage Billiard apparatus be purpose be make elastic force gradual change continuously in the jump that once suddenlys change appears.Can be at blade L type top margin to establishing a folding shell fragment between the movable shell (5) again and being fixed on the movable shell (5), when blade L type top margin will touch this folding shell fragment and be subjected to the elastic force effect during with respect to pipe center of circle convergence certain position, at this moment blade forms the effect that is subjected to the twin-stage shell fragment.Make the shell fragment of two groups of different elastic force between also can be upper and lower folding shell fragment.
According to the working principle of this pump, can make the multistage pump that is provided with the multistage blade zone of action to pump, the blade rotational speed on its flow section can be identical, also can be inequality.The monomer that also can be divided into every blade two-part activity.
The flow section of mentioned blade active region refers to be the cross section perpendicular to tubular axis in narration.
Claims (10)
1, the rotary and centrifugal type axial flow pump that belongs to fluid conveying machine, this mechanical device have fixed pump housing and rotatable blade, and the runner in the pump housing is a through state cylinder type, it is characterized in that:
The movable shell (5) that in a, blade and the ring is the flow field constitutes the sliding pair restriction relation, and the distance that blade is gone up with respect to its flow field center at movable shell (5) can move, regulate,
B, movable shell (5) constitute the revolute pair restriction relation with fixing pump case,
On c, the flow field in the pump housing with the contacted non-member of stirring the liquid axial flow of its fluid for linking mounted pump housing and middle folded movable shell (5) member fixing with pump inlet/outlet two ends, these three sections members constitute the cavity of pump inner flow passages.
2, mechanical device according to claim 1, the central area of flow section does not have mechanical member, mechanism when it is characterized in that inoperative and in when work pump housing, hinder flow axis to flow.
3, mechanical device according to claim 1, it is characterized in that drive vane rotate work and with the contacted member of fluid be movable shell (5).
4, mechanical device according to claim 1 is characterized in that acting on that to make blade on the blade be that the rope institute of tension effect is direct acting to the power of flow field central motion.
5, mechanical device according to claim 1 is characterized in that blade puts in the variation in direct ratio that is complementary of length yardstick in the pump housing flow field acts on the power source power that makes the blade rotary work on the pump housing with it size.
6, mechanical device according to claim 1 is characterized in that blade moves toward the flow section center in the effect of reinforcement that is subjected to gradual change or constant force, and in the process during to ultimate state, the variation of resistance occurs the process of sudden change in gradual change.
7, mechanical device according to claim 1, a blade part part does not contact outside the flow field with fluid when it is characterized in that pump work, and a part contacts in the flow field with fluid.
8, mechanical device according to claim 1, the moment that it is characterized in that making blade, movable shell (5) rotation carrying out work be the power of power source after the effect of rope is transmitted on by the pump housing again transfer function to movable shell (5).
9, according to claim 1 and the described mechanical device of claim 2, it is characterized in that pump work, some flows to fluid particle in the fluid on the flow section of blade active region and obtains axial acceleration and obtain angular velocity of rotation with respect to the flow section center simultaneously, the fluid particle in the fluid be do axial flow and simultaneously radially centrifugal motion reach rotatablely moving with respect to the flow section center.
10, according to claim 1 and the described mechanical device of claim 2, it is characterized in that pump work, fluid is flowed through in the segment distance of blade active region to, and the pressure of flow section center region is that benchmark forms negative pressuren zone with respect to this regional boundary conditions parameter and with this parameter on the flow field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87213190 CN2050100U (en) | 1987-09-05 | 1987-09-05 | Rotary centrifugal type axial-flow pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87213190 CN2050100U (en) | 1987-09-05 | 1987-09-05 | Rotary centrifugal type axial-flow pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2050100U true CN2050100U (en) | 1989-12-27 |
Family
ID=4827731
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87213190 Withdrawn CN2050100U (en) | 1987-09-05 | 1987-09-05 | Rotary centrifugal type axial-flow pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2050100U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275884A (en) * | 2015-08-15 | 2016-01-27 | 何家密 | Strengthening and application of power type vane pump |
| CN114837960A (en) * | 2022-06-01 | 2022-08-02 | 安徽空间探索科技有限公司 | Shaftless pump pushing device and system with blades capable of completely leaving pipeline and capable of being self-closed |
-
1987
- 1987-09-05 CN CN 87213190 patent/CN2050100U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105275884A (en) * | 2015-08-15 | 2016-01-27 | 何家密 | Strengthening and application of power type vane pump |
| CN105275884B (en) * | 2015-08-15 | 2019-11-29 | 何家密 | The enhancing and its application of dynamical type leaf pump |
| CN114837960A (en) * | 2022-06-01 | 2022-08-02 | 安徽空间探索科技有限公司 | Shaftless pump pushing device and system with blades capable of completely leaving pipeline and capable of being self-closed |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |