EP2289605B1 - Canal de déviation d'eau transportable - Google Patents

Canal de déviation d'eau transportable Download PDF

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Publication number
EP2289605B1
EP2289605B1 EP20100171722 EP10171722A EP2289605B1 EP 2289605 B1 EP2289605 B1 EP 2289605B1 EP 20100171722 EP20100171722 EP 20100171722 EP 10171722 A EP10171722 A EP 10171722A EP 2289605 B1 EP2289605 B1 EP 2289605B1
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EP
European Patent Office
Prior art keywords
water circulation
flow
circulation channel
water
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20100171722
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German (de)
English (en)
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EP2289605A1 (fr
Inventor
Wigand Dipl.-Ing. Fitzner
Klaus Dr. Döge
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tz Technisches Zentrum Entwicklungs- & Handelsgese
Original Assignee
TZ Technisches Zentrum Entwicklungs- & Handelsgesellschaft mbH
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Publication of EP2289605A1 publication Critical patent/EP2289605A1/fr
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Classifications

    • A—HUMAN NECESSITIES
    • A63—SPORTS; GAMES; AMUSEMENTS
    • A63B—APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT
    • A63B69/00—Training appliances or apparatus for special sports
    • A63B69/12—Arrangements in swimming pools for teaching swimming or for training
    • A63B69/125—Devices for generating a current of water in swimming pools

Definitions

  • the invention relates to a portable, compact water circulation channel, which consists of a swimming pool with free water surface and integrated measuring section, an intermediate floor and a return flow, wherein the swimming pool is separated from the return flow channel by means of an intermediate floor.
  • Water circulation ducts are used for carrying out flow tests, for training purposes for athletes, preferably by swimmers, but also canoeists or for therapeutic applications in the healing treatment.
  • the water flowing in the channel opens up possibilities for training and rehabilitation, which are not given in standing water.
  • the flowing water has a gentle massage effect that works evenly and intensively on the entire body surface.
  • flow channels have become an indispensable training tool and ergometer.
  • the swimmer does not move from the spot, this allows the coach to accurately analyze the movements of the swimmer and give the athlete hints for an optimized movement.
  • the water circulation channel has a substantially uniform velocity distribution orthogonal to the main flow of water.
  • An almost constant flow velocity of the water over the entire depth, in which the float moves, is a prerequisite for a realistic replica of swimming in stagnant water.
  • flow channels offer the possibility to carry out a particularly gentle training of the rehabilitants.
  • the flowing water causes uniformly distributed pressures and stresses on the body in the water.
  • the even distribution of the load is very gentle on the joints, so that can be started at a very early stage with load training.
  • the flow velocity By adjusting the flow velocity accordingly, the load can be precisely metered, unlike when training outside the water, where always the full gravitational force acts on the body.
  • the patent CH 176 562 A There is a swimming pool, which is flowed through by circulating and adjustable in its speed water, so that it can be swum in the flowing water.
  • the basin is divided by an intermediate floor in an upper space for receiving the float and in a lower space for at least one water screw.
  • the basin is divided by two intermediate walls parallel to the outer walls into a space between the intermediate walls for receiving the float and two spaces between the intermediate walls and the outer walls for the drive means for generating the flow. For the deflection of the flow at the beginning and end of the partition walls no special technical means are required.
  • DE 22 22 594 A1 is described a swimming pool with a circulating flow, in which the water flows in through a Wassereinström representation and passes through a permeable pool floor in the water return system. Due to the fact that the water passes into the water return system via the permeable pool bottom, a drop in the flow velocity occurs in the swimming pool in the direction of flow. However, over the cross section of the swimming pool, perpendicular to the main flow direction of the water, an approximately constant velocity distribution should be present.
  • Axial pumps are small diameter in parallel with nozzles and diffusers, which convert the flow from about square to circular cross-section and vice versa, known.
  • the nozzles are designed with a length of 0.4 to 0.7 times and the diffusers with a length of 1.5 to 2.5 times the clear pump inside diameter. With a control device is ensures that all pumps are brought to the same volume flow rate.
  • Axial pumps which are arranged in the manner described, are therefore particularly suitable for use in large water circulation channels.
  • the DD 246 462 A1 shows a stabilizing device for high-speed, preferably adjacent and parallel axial thrust pumps with non-rotationally symmetrical transition nozzles, in which a stable and monotonously decreasing delivery height characteristic is achieved by the use of a profile ring as a stabilizer whose ratio of profile thickness to profile length is 0.2 to 0.4 and protrudes into the transition nozzle with about half of its length.
  • the stabilizing effect is achieved by a targeted rotationally symmetric recirculation.
  • a water circulation channel in which the water conveyor is arranged in the horizontal side of the measuring section, wherein the measuring section is connected to at least one return channel via different manifolds.
  • One manifold narrows in the direction of flow along a 90 ° bend and is provided with an accelerator grid, another manifold expands along the second 90 ° bend and is equipped with a retard grid fitted.
  • the delay grid is designed as a composite grid in which the delay of the flow is achieved via two or more delay gratings acting in the composite.
  • the inner wall of the bend and the radii of the blades are determined by the thickness of the false bottom between the measuring section and the return channel. Downstream of each pump is a conventional transition diffuser of round to rectangular cross-section.
  • a flow pool for training swimmers in which the flow channel (with the swimming pool) is arranged above the return flow channel.
  • the separation of the channels is made by a horizontal floor.
  • the pumps are arranged in the return flow channel.
  • the cross-sectional area of the portion of the return flow channel downstream of the pumps increases with increasing distance from the pumps.
  • the deflection of the flow from the flow into the return flow channel and from the return flow through the flow channel takes place by means of a plurality of spaced deflecting vanes, the flow passages being defined by adjacent deflecting vanes or by a respective deflecting vane and the rounded front edge of the bottom or the wall of the flow basin.
  • the presented water circulation channels are consistently very large in size and suitable only for stationary construction. The reason for this is that with large dimensions, a uniform distribution of the flow velocity over the cross section perpendicular to the flow direction in the measuring section can be achieved; Speed differences and vortices are reduced. At the same time, however, large systems require large delivery rates of the pumps because a significant amount of water must be moved through the components to improve the velocity distribution. A high delivery rate of the pumps is also associated with a high demand for electrical energy and associated operating costs.
  • the object of the invention is therefore to provide a compact water circulation channel with a uniform flow velocity distribution orthogonal to the main flow direction of the water, which has dimensions that make it portable and at the same time ensures relatively low operating costs by using small pumps with low drive power. According to the invention, this object is achieved by the features of claim 1; advantageous embodiments of the invention will become apparent from the dependent claims.
  • the water circulation channel according to the invention is characterized in that it has at least on the downstream side of the pump, which has at least one impeller and is designed either with or without stator, for deflecting the flow except elbows with blade grids and a deflection channel.
  • This is formed by the rounded end edge of the intermediate bottom and a half-tube, the concave inner side of which encloses the end edge of the intermediate bottom distally.
  • the half tube is positioned so that the cross section of the deflection channel widens from the underside of the intermediate bottom to the top side of the intermediate base.
  • the water deflection channel comprises a short diffuser arranged downstream of the at least one pump and having a plurality of segment plates which are arranged in the flow space of the short diffuser (9) and whose surfaces are aligned parallel to the flow direction.
  • the intermediate floor which separates the swimming pool from the return flow channel, is preferably only a few centimeters thick for weight reasons (complicated lightweight / waffle constructions are ruled out for cost reasons).
  • the intermediate floors In water channels, which are operated stationary, the intermediate floors, however, are usually between 0.5 to 1 m thick, which has the advantage that the usually round running front edges of the intermediate floors have larger radii and therefore the flow exclusively by means of aerodynamically favorable blade grid to the two Transitions from the flow into the return flow and the remindström- can be performed in the flow channel.
  • the water circulation channel according to the invention at least downstream of the pump in addition to the blade lattice and the one deflection channel.
  • the half tube acts as a turning vane.
  • the deflection channel (the turning vane) can be kept very short for reasons of geometry, that is, there is no friction over a large length.
  • both end edges are provided with a deflection channel, wherein the respective half-pipe extends over the entire length of the end edge of the intermediate bottom.
  • the concave inner side of the half tube faces the front edge of the intermediate bottom approximately parallel; the half tube is horizontally and vertically spaced from the end edge.
  • the horizontal distance of the half tube to the end edge of the intermediate bottom is preferably selected such that it corresponds to the radius of the half tube minus half the thickness of the intermediate bottom.
  • the half-tube In the vertical direction, the half-tube is positioned so that the distance between the lower end edge of the half-tube to the bottom of the intermediate bottom is smaller than the distance of the upper end edge of the half-tube to the top of the intermediate bottom.
  • Typical values of a 2 / a 1 are in the range between 1.5 and 2.5. Correspondingly, then the cross-sectional widening is about 10 °, ie, in the longitudinal section of the settlement (the curved portions of the channel are straightened) of the Umlenkkanals the channel walls extend at an angle of 10 ° to each other. At values of a 2 / a 1 ⁇ 1.5, the risk of separation is much lower, so that the calculated angles are then less than 10 °.
  • the water flows into the deflection channel, it is deflected around the front edge of the intermediate bottom (180 °) free of flow and turbulence via the inner surface of the bent half pipe at the front edge of the intermediate bottom. In the remaining (further from the front edge) region of the flow cross-section, the water is deflected by means of blade lattices.
  • transportable water circulation channels have inherently smaller dimensions than stationary and in flow the flow velocities over long lengths of self-equalizing, in small, portable water circulation channels alone with the deflection according to the invention (from the flow in the return flow and remindström- in the flow channel) yet none sufficiently uniform distribution (as in stationary channels) of the flow velocity can be achieved.
  • a short diffuser with a plurality of segment plates (as a segment plate is defined in each case one of the axis to the housing of the short diffuser reaching sheet metal) used.
  • the segment plates in the diffuser cause, first, that in the diffuser by a redistribution of the areas with high flow velocity equalization of the total flow is achieved, and secondly, it is possible to make the diffuser shorter and still achieve stable operating conditions.
  • the diffuser can be made shorter, the more segmental panels are used. So z. B.
  • the square cross section is about twice the clear diameter of the pump required, the length of which is at least twice as large as the diameter of the round cross section , while even with the use of four segment sheets, the length of the diffuser may be shorter than the diameter of the round cross section.
  • the hub on which at least one impeller and possibly the stator of the pump are arranged not as usual, at the level or shortly behind (seen in the direction of flow) end of the pump, but the hub axially into the short diffuser or to pass through it.
  • the hub With small hub ratios, the hub is also formed as a tip. As a result, the generation of vortices / detachments downstream behind the hub is largely prevented, in particular in the case of rotating hubs (to a lesser extent, however, also in the case of non-rotating hubs).
  • the segment plates are preferably arranged radially extending between the hub and the housing of the short diffuser and extend over the entire length of the short diffuser.
  • the number of segment plates is, in order to prevent resonance vibrations, not equal to the number of blades of the impeller or, if present, the stator of the pump.
  • boundary layers are formed not only on the outer walls of the diffuser, but also on the segmental plates and at the hub.
  • the thickness of these boundary layers is very small, compared to the boundary layer forming only on the outer wall in conventional diffusers.
  • the boundary layers are distributed over the entire cross section of the diffuser, so that a very uniform distribution of the flow velocity adjusts over a short diffuser length over the cross section of the diffuser and thus also over the cross section of the return channel. This has a positive effect on the distribution of the flow velocities in the flow channel / swimming pool.
  • the mass of the water circulation channel consists essentially of plastic, which is surrounded by a stabilizing metal support frame, or alternatively made of steel, preferably made of stainless steel.
  • the in Fig. 1 illustrated water circulation channel consists of the swimming pool 1, the intermediate floor 2 and the return channel 3 in the lower area.
  • the pump 4 is accommodated for flow propulsion.
  • the rounded end edges 6 of the intermediate bottom 2 have, together with the half-tubes 8, the two deflection channels 7.1 and 7.2. Through the deflection channels 7.1 and 7.2, the flow of water is deflected by 180 °.
  • the short diffuser 9 At the pump 4 sits the short diffuser 9 with the hub 10 and the segment plates 11; the short diffuser 9 is located on the outflow side 12 of the pump 4th
  • a circulation of the water is therefore as follows:
  • the water On the inflow side 13 of the pump 4, the water is sucked in and pumped through the short diffuser 9 with hub 10 and segmental plates 11 in the downstream region of the return flow channel 3.
  • the water meets the first deflection channel 7.1 and the first elbow provided with blade grids 5.1.
  • the blade grids 5.1 of the first manifold the water is deflected by 90 ° upwards, of the blade grids 5.2 of the second manifold, the flow is in turn deflected by 90 °; the water is now owned by the Water surface 15 to the intermediate bottom 2 a flow direction 14 which is opposite to the flow direction in the return channel 3.
  • a flow deflection through 180 ° likewise experiences the water which flows on the underside of the intermediate bottom into the first deflection channel 7.1.
  • the water now flows through the swimming pool 1 with a uniform, uniform flow velocity.
  • the water meets the third bend with the blade grid 5.3 and the second deflection channel 7.2.
  • the water After the water has flowed through the third and fourth manifolds with the blade grids 5.3 and 5.4 and the second deflection channel 7.2, it is again at the inflow side 13 of the pump 4th
  • Fig. 2 the specifics of the deflection channel are shown.
  • the front edge 6 and the half tube 8 form the deflection channel 7.1.
  • This has at the top of the intermediate bottom 2 has a larger cross-section (a larger clear width a 2 ) than at the bottom (smaller clear width a 1 ).
  • This arrangement of the half-pipe 8 ensures that the horizontally flowing water at the intermediate bottom 2 is guided around the front edge 6 of the intermediate bottom 2 free of stalling and slows in its speed.
  • the short diffuser 9 has a length which is substantially shorter than twice the diameter of the clear space of the pump.
  • Fig. 4 shows the short diffuser 9 with hub 10 and segment plates 11 seen from the downstream side 12 from. You can see the radially extending from the hub 10 to the outside of the walls of the short diffuser 9 segment plates 11th

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Claims (10)

  1. Canal de circulation d'eau transportable, constitué d'un bassin (1) avec une surface de l'eau libre et un trajet de mesure intégré, un canal de refoulement (3), un plancher intermédiaire (2) séparant le bassin (1) du canal de refoulement (3), au moins une pompe (4) agencée dans le canal de refoulement (3) et faisant circuler l'eau, ainsi que des coudes avec des grilles d'aube (5.1; 5.2; 5.3; 5.4) pour faire dévier le flux, dans lequel le canal de circulation d'eau comporte un canal de déviation (7.1) au moins du côté aval (12) de l'au moins une pompe (4), lequel est formé par une arête frontale arrondie (6) du plancher intermédiaire (2) et un demi-tuyau (8) dont le côté intérieur concave entoure l'arête frontale (6) du plancher intermédiaire (2) de façon distale, dans lequel la section transversale du canal de déviation (7.1) s'élargit du côté inférieur du plancher intermédiaire (2) vers le côté supérieur du plancher intermédiaire (2), et un diffuseur rapide (9) avec plusieurs tôles segmentées (11) agencées dans l'espace d'écoulement du diffuseur rapide (9), et dont les surfaces sont orientées parallèlement à la direction d'écoulement, se trouve côté aval sur l'au moins une pompe (4).
  2. Canal de circulation d'eau selon la revendication 1, caractérisé en ce que la portée libre de l'au moins un canal de déviation (7.1), à l'entrée (a1) et à la sortie (a2), ainsi que pour le rayon extérieur (ri) du plancher intermédiaire (2) et le rayon intérieur (ra) du demi-tuyau (8), le rapport ra/ri<4/(a2/a1) est valable.
  3. Canal de circulation d'eau selon les revendications 1 et 2, caractérisé en ce que le moyeu (10) s'allonge à partir de l'au moins une pompe (4), jusqu'en direction de l'extrémité du diffuseur rapide (9) qui est détournée de la pompe, et s'introduit dans et/ou traverse axialement le diffuseur rapide (9).
  4. Canal de circulation d'eau selon la revendication 3, caractérisé en ce que le moyeu est formé en pointe pour les petits rapports de moyeu.
  5. Canal de circulation d'eau selon les revendications 3 et 4, caractérisé en ce que les tôles segmentées (11) sont agencées radialement entre le moyeu (10) et les parois latérales du diffuseur (9).
  6. Canal de circulation d'eau selon l'une des revendications 1 à 5, caractérisé en ce que le nombre de tôles segmentées (11) est différents du nombre d'aubes de la roue directrice ou à aubes de la pompe (4).
  7. Canal de circulation d'eau selon l'une des revendications 1 à 6, caractérisé en ce que l'épaisseur du plancher intermédiaire (2) correspond à 10 à 60% du rayon du demi-tuyau.
  8. Canal de circulation d'eau selon l'une des revendications 1 à 7, caractérisé en ce que le rapport de division des aubes de la grilles d'aube (5.1; 5.2; 5.3; 5.4) est compris entre 0,5 et 0,6.
  9. Canal de circulation d'eau selon l'une des revendications 1 à 8, caractérisé en ce que toutes les pompes (4) utilisées sont des pompes axiales rapides avec les mêmes paramètres de performance.
  10. Canal de circulation d'eau selon l'une des revendications 1 à 9, caractérisé en ce que le bassin (1), le plancher intermédiaire (2) et le canal de refoulement (3) sont agencés côte à côte, dans lequel le plancher intermédiaire (2) constitue une cloison et le côté supérieur et le côté inférieur, du point de vue de l'écoulement, deviennent respectivement un côté droit et un côté gauche.
EP20100171722 2009-08-21 2010-08-03 Canal de déviation d'eau transportable Active EP2289605B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102009038451A DE102009038451A1 (de) 2009-08-21 2009-08-21 Transportabler Wasserumlaufkanal

Publications (2)

Publication Number Publication Date
EP2289605A1 EP2289605A1 (fr) 2011-03-02
EP2289605B1 true EP2289605B1 (fr) 2014-04-02

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EP20100171722 Active EP2289605B1 (fr) 2009-08-21 2010-08-03 Canal de déviation d'eau transportable

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EP (1) EP2289605B1 (fr)
DE (1) DE102009038451A1 (fr)
RU (1) RU2540737C2 (fr)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH176562A (de) 1934-09-29 1935-04-30 Raeber Heinrich Schwimmbad.
DE2222594A1 (de) 1972-05-09 1973-11-29 Karl Guenter Hoppe Schwimmbecken mit umlaufstroemung
DE2237800A1 (de) * 1972-08-01 1974-02-14 Rupert Burgmair Raumsparendes heimschwimmbecken
DD246462A3 (de) * 1984-12-29 1987-06-10 Techn Zentrum Geraete Und Anla Stabilisierungsvorrichtung fuer schnellaeufige axialpumpen
DD246461A3 (de) 1984-12-29 1987-06-10 Techn Zentrum Geraete Und Anla Axialpumpen mit kleiner durchmesserzahl in parallelschaltung
SU1437048A1 (ru) * 1986-07-29 1988-11-15 Брестский инженерно-строительный институт Гребной бассейн
JPS6351571A (ja) * 1986-08-20 1988-03-04 石川島播磨重工業株式会社 回流式プ−ル
KR900003498A (ko) * 1988-08-22 1990-03-26 이나바 고우사꾸 순환식 풀장
JPH0257277A (ja) * 1988-08-23 1990-02-27 Ishikawajima Harima Heavy Ind Co Ltd 回流式水槽
DE3921015C1 (fr) 1989-06-27 1990-08-09 Hamburger Wasserwerke Gmbh, 2000 Hamburg, De
DE9306558U1 (de) 1993-04-30 1993-08-19 Tz Tech Zentrum Entwicklungs & Wasserumlaufkanal
RU2296202C2 (ru) * 2005-05-14 2007-03-27 Юрий Владимирович Гурьев Комплекс для плавания

Also Published As

Publication number Publication date
EP2289605A1 (fr) 2011-03-02
RU2540737C2 (ru) 2015-02-10
RU2010134795A (ru) 2012-02-27
DE102009038451A8 (de) 2011-06-01
DE102009038451A1 (de) 2011-03-03

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