CN216839323U - Vortex eliminating device and vortex eliminating system of overflowing tunnel water inlet - Google Patents
Vortex eliminating device and vortex eliminating system of overflowing tunnel water inlet Download PDFInfo
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- CN216839323U CN216839323U CN202220559320.0U CN202220559320U CN216839323U CN 216839323 U CN216839323 U CN 216839323U CN 202220559320 U CN202220559320 U CN 202220559320U CN 216839323 U CN216839323 U CN 216839323U
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Abstract
The utility model discloses a vortex eliminating device and a vortex eliminating system of a water inlet of an overflow tunnel.A flat hollow body structure is used to float on the water surface to eliminate vertical shaft vortexes, a plurality of hollow holes are arranged on the hollow body structure, and in the process of eliminating vortexes by the hollow body structure, floaters can be hung on the hollow holes or the structures among the hollow holes so as to avoid the floaters from damaging a flow passage along with water flow; a guide sliding groove is reserved on the tower body, the steel floating barrels are connected to form a hollowed-out eddy eliminating floating device, sliding wheels are arranged, the sliding wheels are placed in the guide groove of the tower body, and the eddy eliminating floating device can float up and down along with the change of the water level. When building the tunnel lock chamber that overflows, just reserve the direction spout on the tower body, construction convenience, the effective unified whole that forms of direction spout and tower body moreover, stable in structure.
Description
Technical Field
The utility model relates to a hydraulic and hydroelectric engineering technical field, concretely relates to vortex elimination device and overflow tunnel water inlet's vortex elimination system.
Background
In hydraulic and hydroelectric engineering, a hydraulic diversion tunnel and a construction diversion tunnel often form a vertical shaft air suction vortex in front of a water inlet during overflowing, the higher the water level is, the larger the leakage flow is, and the more obvious and stable the vortex is. When the vortex carries a large amount of air into the tunnel, the discharge capacity of the tunnel is influenced, and meanwhile, the phenomena of vibration, negative pressure in the tunnel and cavitation erosion are easily caused, and the overflowing tunnel civil engineering structure, the metal junction equipment and the like are damaged in severe cases. Therefore, measures are necessary to eliminate the vortex of the suction funnel at the inlet of the flow tunnel to ensure the safe operation of the flow tunnel.
At present, the vortex eliminating structure commonly used for the tunnel opening of the over-flow tunnel mainly has three types:
(1) adjusting an overflowing operation mode to ensure a certain submerged water depth of the water inlet;
(2) the structural design of a water inlet is optimized, and the overflowing condition is improved;
(3) the water inlet is provided with special vortex eliminating facilities such as a vortex eliminating beam, a vortex preventing plate and the like. The vortex elimination facility can partially eliminate the degree of the vortex of the vertical shaft of the water inlet, but the vortex elimination facility is difficult to flexibly adjust along with the amplitude variation of the water level and the position of the vortex along with the change of the running mode of the overflowing tunnel, so that the vortex elimination effect is not ideal;
(4) the existing vortex-eliminating facilities can not resist the floating objects at the water inlet.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the existing vortex-eliminating facilities are difficult to flexibly adjust along with the amplitude variation of the water level and the vortex position, and can not obstruct floaters on the water surface, so that the vortex-eliminating effect is not ideal; an object of the utility model is to provide a vortex elimination device and overflow tunnel water inlet's vortex elimination system carries out structural improvement based on current vortex elimination facility, reserves the direction spout at the tower body through the vortex elimination device cooperation of special construction, solves above-mentioned technical problem.
The utility model discloses a following technical scheme realizes:
the utility model provides a vortex-eliminating device, vortex-eliminating device is flat hollow body structure, hollow body structure suspension is used for eliminating the vertical scroll swirl at the surface of water, it has a plurality of fretwork hole to arrange on the hollow body structure.
The working principle of the scheme is as follows: the water surface at some positions can accumulate more floaters, the floaters can accumulate along with the vortex to influence the water quality and simultaneously cause the damages of channel blockage, channel damage and the like, for example, at the water inlet of the overflowing tunnel, a plurality of floaters can be generally accumulated, the floaters can carry a larger amount of air along with the vortex to enter the overflowing tunnel, the drainage capacity of the tunnel is influenced, the phenomena of vibration, negative pressure in the tunnel and cavitation erosion are easily caused, and the overflowing tunnel civil engineering structure, the golden junction equipment and the like can be damaged in serious cases; the existing vortex-eliminating device is composed of a movable suspended vortex-eliminating beam, a floating device, a grid bar and other structures, the structures are not only complex in structure and difficult to ensure in strength, but also only consider the vortex-eliminating protection and ignore the harm brought by the accumulation of floating objects; the utility model provides a pair of vortex device disappears uses flat hollow body structure to float and eliminates the vertical scroll swirl on the surface of water, and the last arranging of hollow body structure has a plurality of fretwork hole, and hollow body structure disappears the in-process of whirlpool, and the floater can be hung at fretwork hole or each fretwork structurally between the hole to avoid the floater to destroy the runner along with rivers.
In addition, the flat hollow body structure of this scheme is steel matter, for example hollow body structure that the steel flotation pontoon constitutes etc. has the advantage that intensity is high, and the durability is strong.
The scheme also provides a vortex eliminating system of the water inlet of the overflow tunnel, which comprises the vortex eliminating device, a sliding wheel and a guide sliding chute;
the lower side surface of the vortex eliminating device is a floating surface, and the floating surface of the vortex eliminating device is used for covering a vortex generating area when the vortex eliminating device is suspended on the water surface at the water inlet of the overflow tunnel;
the guide sliding chute is a groove reserved on the surface of the tower body during the pouring of the gate chamber of the overflow tunnel;
the sliding wheel is matched with the guide sliding groove and connected with the eddy eliminating device, and the sliding wheel and the eddy eliminating device can move back and forth along the guide sliding groove.
The working principle of the scheme is as follows: the existing vortex-eliminating facilities are difficult to flexibly adjust along with the amplitude variation of the water level and the vortex position, and can not obstruct floaters on the water surface, so that the vortex-eliminating effect is not ideal; for example, patent document CN201710168416.8 discloses a movable suspended vortex-eliminating beam system for eliminating vertical shaft vortex at a water inlet, wherein the movable suspended vortex-eliminating beam can float up and down along with the change of water level and can rotate in a certain range on the water surface plane of the water inlet, although the movable suspended vortex-eliminating beam can rotate and float up and down on the plane before a hole, the vortex-eliminating area is limited, and only the vortex at the position of the movable suspended vortex-eliminating beam can be eliminated at the same time, if a large area of vertical shaft vortex area is formed in front of the water inlet, the structure is difficult to realize the vortex-eliminating effect quickly; when the position of the vortex changes, the direction adjustment needs to be carried out by an attendant in time. In addition, the structure needs three winches to realize plane rotation in front of the hole, the structure is complex, the mutual matching of the winches is difficult in practical operation, and the vortex eliminating beam position is difficult to accurately position. The vortex elimination device in the scheme directly covers the possible vortex generation area, so that vortex elimination can be carried out in time no matter the position of the vertical shaft vortex changes or a large-area vertical shaft vortex area is formed, and the attendance is not needed; meanwhile, the vortex eliminating device in the scheme adopts the steel buoy to form a hollow structure, so that not only can the structural strength be ensured, but also water flow can be contacted with air and aerated at the lower part of the floating structure, and the strength of vertical shaft vortex generation is greatly reduced; under the condition that the floating objects are accumulated, the hollow structure can also collect the accumulated objects, and the adverse effect of the vertical shaft vortex is further reduced.
The vortex elimination device disclosed in patent document CN201720929174.5 also has a guide rail arranged outside the tower body, but the structure needs to pre-embed a large number of steel structure embedded parts in advance, the vortex elimination structure is in a cantilever state for a long time, and the guide rail is easily damaged, so that the flexibility of the vertical normal floating of the vortex elimination structure is affected; in addition, the structure consists of a floating device and grid bars, the structural strength is difficult to ensure, and the floating device is difficult to resist when a large amount of floating objects exist in the water inlet, so that the floating device is easy to deform and damage. The utility model discloses to the condition that often forms the vortex of roll up gas vertical scroll before overflowing the tunnel water inlet, adopt to reserve the direction spout on the tower body, adopt the steel flotation pontoon to connect the vortex-eliminating flotation device that forms the fretwork and set up the movable pulley, place the movable pulley in the tower body guide way, the vortex-eliminating flotation device can be along with the change of water level and fluctuate. When building the tunnel lock chamber that overflows, just reserve the direction spout on the tower body, construction convenience, the effective unified whole that forms of direction spout and tower body moreover, stable in structure. In addition, the hollow-out structural strength that the whirlpool flotation device that disappears adopts the steel flotation pontoon to connect and forms is high, simple to operate, and not only the area of the whirlpool that disappears is big, has the water inlet moreover and blocks the dual function of floating and the whirlpool that disappears, and the durability is strong.
The further optimization scheme is that the guide sliding chute extends from the top of the tower body to the water inlet direction of the overflowing tunnel, and the plane where the guide sliding chute is located is perpendicular to the water surface; the distance between the tail end of the guide sliding chute and the highest point of the water inlet of the overflowing tunnel is equal to the thickness of the guide sliding chute, and the limiting cavity at least extends into 1/10 of the width of the tower body.
When the water surface height is lower than the highest point of the water inlet of the overflowing tunnel, vortex is not generated generally, so that the lowest point of the vortex eliminating device is only required to be at the highest point of the water inlet of the overflowing tunnel, and if the lowest point of the vortex eliminating device is below the highest point of the water inlet of the overflowing tunnel, the problem of influencing the water flow rate may occur.
The further optimization scheme is that the cross section of the guide sliding chute is of a convex structure, the guide sliding chute comprises a limiting cavity and a sliding cavity which are communicated with each other, the sliding cavity is located on the surface of the tower body, and the cross section area of the limiting cavity is larger than that of the sliding cavity.
The corresponding sliding wheel comprises a sliding part and a limiting part, the limiting part slides in the sliding cavity, the sliding part slides in the sliding cavity, and the limiting part is limited to move only in the limiting cavity due to the fact that the cross sectional area of the limiting cavity is larger than that of the sliding cavity.
The guide sliding groove starts from the top of the tower body, so that the vortex eliminating device is convenient to detach and install, and convenience is provided for maintenance work.
The further optimization scheme is that the wall surface of the position where the limiting cavity is communicated with the sliding cavity is provided with a guide angle.
When the water level changes, in order to enable the height of the guide sliding groove to be capable of quickly following the water level, the wall surface of the position where the limiting cavity is communicated with the sliding cavity is provided with a guide angle, so that the sliding wheel can slide along the guide sliding groove more smoothly.
The vortex eliminating device is a hollow cuboid, the surface A with the largest area is suspended on the water surface, and the sliding wheels are integrally connected with the adjacent surfaces of the surface A.
Preferably, the sliding wheel and the vortex-eliminating device are hollow bodies, so that the weight of the whole device is reduced, and the device is guaranteed to float on the water surface.
The further optimization scheme is that the hollowed-out holes are rectangular hollowed-out holes.
The hollow holes are not limited to the rectangular shape, and can also be through holes in a circular shape or other polygonal shapes, but the rectangular hollow holes have certain advantages compared with through holes in other forms, a plurality of cuboid structures are formed among the plurality of rectangular hollow holes, and the cylinder structures are more favorable for suspension and accumulation of floaters.
The further optimization scheme is that the width of the hollow cuboid is larger than the maximum width of the water inlet of the overflowing tunnel.
The size of the generated vortex is closely related to the size of the water inlet of the flow-passing tunnel, so that the area of the vortex-eliminating device needs to be large enough to achieve a better vortex-eliminating effect.
The further optimization scheme is that the device further comprises a hoisting device and a connecting rope, wherein the hoisting device is installed at the top of the tower body and is connected with the vortex eliminating device through the connecting rope.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model provides a vortex eliminating device and vortex eliminating system of a water inlet of an overflowing tunnel, which use a flat hollow body structure to float on the water surface to eliminate vertical shaft vortex, a plurality of hollow holes are arranged on the hollow body structure, and in the process of eliminating vortex by the hollow body structure, floaters can be hung on the hollow holes or the structures among the hollow holes so as to avoid the floaters from damaging a flow passage along with water flow; a guide sliding groove is reserved on the tower body, the steel floating barrels are connected to form a hollowed-out eddy eliminating floating device, sliding wheels are arranged, the sliding wheels are placed in the guide groove of the tower body, and the eddy eliminating floating device can float up and down along with the change of the water level. When building the tunnel lock chamber that overflows, just reserve the direction spout on the tower body, construction convenience, the effective unified whole that forms of direction spout and tower body moreover, stable in structure.
Drawings
In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort. In the drawings:
FIG. 1 is a schematic view of a vortex breaker;
FIG. 2 is a schematic view of a vortex shedding system at the water inlet of the overflow tunnel;
FIG. 3 is a schematic view of a tower structure;
FIG. 4 is a side view of a vortex shedding system at the water inlet of the overflow tunnel.
Reference numbers and corresponding part names in the drawings:
1-hollow body structure, 11-hollowed hole, 2-sliding wheel, 3-guide chute, 4-hoisting device, 5-connecting rope, 6-water inlet of overflow tunnel, 7-tower body.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
At present, the vortex eliminating structure commonly used for the tunnel opening of the over-flow tunnel is mainly: firstly, the overflowing operation mode is adjusted to ensure a certain submerged water depth of a water inlet; secondly, the structural design of a water inlet is optimized, and the overflowing condition is improved; thirdly, special vortex-eliminating facilities such as vortex-eliminating beams and vortex-preventing plates are arranged at the water inlet. The vortex elimination facility can partially eliminate the degree of the vortex of the vertical shaft of the water inlet, but the vortex elimination facility is difficult to flexibly adjust along with the amplitude variation of the water level and the position of the vortex along with the change of the running mode of the overflowing tunnel, so that the vortex elimination effect is not ideal; and the influence brought by the floating objects at the water inlet is not considered by the existing vortex-eliminating facilities.
In view of this, the present solution provides the following embodiments to solve the above technical problems:
example 1
The present embodiment provides a vortex breaking device, as shown in fig. 1, the vortex breaking device is a flat hollow body structure 1, the hollow body structure 1 is suspended on the water surface for eliminating vertical shaft vortex, and the hollow body structure 1 is made of steel.
A plurality of hollow holes 11 are arranged on the hollow body structure 1. In this embodiment, the through holes 11 are uniformly arranged rectangular through holes.
The water surface at some positions can accumulate more floaters, the floaters can accumulate along with the vortex to influence the water quality and simultaneously cause the damages of channel blockage, channel damage and the like, for example, at the water inlet of the overflowing tunnel, a plurality of floaters can be generally accumulated, the floaters can carry a larger amount of air along with the vortex to enter the overflowing tunnel, the drainage capacity of the tunnel is influenced, the phenomena of vibration, negative pressure in the tunnel and cavitation erosion are easily caused, and the overflowing tunnel civil engineering structure, the golden junction equipment and the like can be damaged in serious cases; the existing vortex-eliminating device is composed of a movable suspended vortex-eliminating beam, a floating device, a grid bar and other structures, the structures are not only complex in structure and difficult to ensure in strength, but also only consider the vortex-eliminating protection and ignore the harm brought by the accumulation of floating objects; the utility model provides a pair of vortex device disappears uses flat hollow body structure to float and eliminates the vertical scroll swirl on the surface of water, and the last arranging of hollow body structure has a plurality of fretwork hole, and hollow body structure disappears the in-process of whirlpool, and the floater can be hung at fretwork hole or each fretwork structurally between the hole to avoid the floater to destroy the runner along with rivers.
Example 2
The embodiment provides a vortex elimination system for a water inlet of an overflow tunnel, which comprises a vortex elimination device, a sliding wheel 2 and a guide chute 3, which are described in the previous embodiment, as shown in fig. 2, 3 and 4;
the vortex elimination device is suspended on the water surface at the water inlet 6 of the overflow tunnel, and the floating surface of the vortex elimination device covers a vortex generation area;
the guide sliding chute is a groove reserved on the surface of the tower body 7 during pouring of the overflowing tunnel lock chamber;
the sliding wheel 2 is matched with the guide sliding groove 3, the sliding wheel 2 is connected with the vortex eliminating device, and the sliding wheel 2 and the vortex eliminating device move back and forth along the guide sliding groove 3.
The guide chute 3 extends from the top of the tower body 7 to the direction of the water inlet 6 of the overflow tunnel, and the plane of the guide chute 3 is vertical to the water surface; the distance between the tail end of the guide chute 3 and the highest point of the water inlet 6 of the overflowing tunnel is equal to the thickness of the guide chute 3.
The cross section of the guide chute 3 is of a convex structure, the guide chute 3 comprises a limiting cavity and a sliding cavity which are communicated with each other, the sliding cavity is positioned on the surface of the tower body 7, and the cross section area of the limiting cavity is larger than that of the sliding cavity.
And the wall surface of the position where the limiting cavity is communicated with the sliding cavity is provided with a guide angle.
The vortex eliminating device is a hollow cuboid, the surface A with the largest area is suspended on the water surface, and the sliding wheels are integrally connected with the adjacent surfaces of the surface A.
The hollow holes 11 are rectangular hollow holes.
The width of the hollow cuboid is larger than the maximum width of the water inlet of the over-flow tunnel.
When the water surface height is lower than the highest point of the water inlet of the overflowing tunnel, vortex is not generated generally, so that the lowest point of the vortex eliminating device is only required to be at the highest point of the water inlet of the overflowing tunnel, and if the lowest point of the vortex eliminating device is below the highest point of the water inlet of the overflowing tunnel, the problem of influencing the water flow rate may occur.
The device is characterized by further comprising a hoisting device 4 and a connecting rope 5, wherein the hoisting device is installed at the top of the tower body and is connected with the vortex eliminating device through the connecting rope.
Aiming at the condition that a lock chamber is easy to generate vertical shaft vortex in the water inlet of the overflowing tunnel, a guide sliding groove is reserved in advance on the tower body during pouring of the lock chamber, and the later-stage vortex-eliminating device is convenient to form an organic whole with the tower body through a sliding wheel. The vortex eliminating device adopts a hollow structure formed by connecting steel buoys, so that the rigidity of the vortex eliminating structure can be ensured, the vortex eliminating device has the function of blocking floating objects in front of a water inlet, the hollow structure can ensure that water flow is fully contacted with air before entering a hole, and the vortex strength of the vertical shaft is fully reduced; through the hoisting device on the upper part of the tower body, when the water level is lower than the bottom of the guide chute, the safety of the vortex eliminating device can be ensured through the connecting rope.
The vortex eliminating device adopts the steel floating cylinders to form a hollow structure, so that not only can the structural strength be ensured, but also the water flow can be contacted with air and aerated at the lower part of the floating structure, and the strength of vertical shaft vortex generation is greatly reduced;
the sliding wheel is arranged on the vortex eliminating device, the guide sliding groove is arranged on the tower body, and the vortex eliminating device and the tower body are integrated. The structure can float up and down along with the amplitude of water level variation, and has the dual functions of floating interception and vortex elimination, and the durability is strong.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The vortex eliminating device is characterized by being of a flat hollow body structure, the hollow body structure is suspended on the water surface and used for eliminating vertical shaft vortexes, and a plurality of hollowed holes are arranged in the hollow body structure.
2. A vortex reducing system for a water inlet of an overflow tunnel, comprising the vortex reducing device of claim 1, a sliding wheel and a guide chute;
the lower side surface of the vortex eliminating device is a floating surface, and the floating surface of the vortex eliminating device is used for covering a vortex generating area when the vortex eliminating device is suspended on the water surface at the water inlet of the overflow tunnel;
the guide sliding chute is a groove reserved on the surface of the tower body during the pouring of the gate chamber of the overflow tunnel;
the sliding wheel is matched with the guide sliding groove and connected with the vortex eliminating device, and the sliding wheel drives the vortex eliminating device to reciprocate along the guide sliding groove.
3. The vortex reducing system for the water inlet of the overflowing tunnel according to claim 2, wherein the guide chute extends from the top of the tower body to the water inlet of the overflowing tunnel, and the plane of the guide chute is perpendicular to the water surface; the distance between the tail end of the guide sliding chute and the highest point of the water inlet of the overflowing tunnel is equal to the thickness of the guide sliding chute.
4. The vortex reducing system for the water inlet of the overflowing tunnel according to claim 3, wherein the cross section of the guide chute is in a convex structure, the guide chute comprises a limiting cavity and a sliding cavity which are communicated with each other, the sliding cavity is located on the surface of the tower body, and the cross section area of the limiting cavity is larger than that of the sliding cavity.
5. The vortex reducing system for the water inlet of the overflowing tunnel according to claim 4, wherein the wall surface of the position where the limiting cavity is communicated with the sliding cavity is provided with a guide angle.
6. The vortex reducing system for the water inlet of an overflow tunnel of claim 4, wherein said confinement chamber extends at least 1/10 times the width of the tower.
7. The vortex breaking system for the water inlet of the overflowing tunnel according to claim 2, wherein the vortex breaking device is a hollow cuboid, the surface A with the largest area is suspended on the water surface, and the sliding wheel is integrally connected with the adjacent surface of the surface A.
8. The vortex reducing system of a flow tunnel water inlet according to claim 7, wherein said hollowed out holes are rectangular hollowed out holes.
9. The vortex reducing system of an overflow tunnel water inlet of claim 7, wherein the width of said hollow cuboid is greater than the maximum width of the overflow tunnel water inlet.
10. The vortex breaking system for the water inlet of the overflowing tunnel according to claim 2, further comprising a winding device and a connecting rope, wherein the winding device is installed at the top of the tower body and is connected with the vortex breaking device through the connecting rope.
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| CN202220559320.0U CN216839323U (en) | 2022-03-11 | 2022-03-11 | Vortex eliminating device and vortex eliminating system of overflowing tunnel water inlet |
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| CN202220559320.0U CN216839323U (en) | 2022-03-11 | 2022-03-11 | Vortex eliminating device and vortex eliminating system of overflowing tunnel water inlet |
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