CN215801437U

CN215801437U - Overflow dam structure

Info

Publication number: CN215801437U
Application number: CN202121063145.8U
Authority: CN
Inventors: 董四海; 徐建军; 唐迎旭; 许君力; 郭飞飞; 陈玉言
Original assignee: Shenzhen Water Planning And Design Institute Co ltd
Current assignee: Shenzhen Water Planning And Design Institute Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2022-02-11
Anticipated expiration: 2031-05-18

Abstract

An overflow dam structure, when the water level rises to the overflow pier position, water can flow through the dam body through the overflow hole formed by the overflow pier at the top of the dam body, the water flowing through the dam body flows to the bias flow frame, the bias flow frames are arranged in a group of two-by-two opposite arrangement, the design enables the water flowing from the dam surface to pass through the bias flow frames, the two adaptive bias flow frames can guide and divert the water flow, the water flow which flows through the bias flow frames can obliquely fly out along the bias flow frames, the flow raising frame at the lower part of the bias flow frame on the overflow surface has an elevation angle, the water flow obliquely flies out after passing through the flow raising frame, the bias flow frame is matched with the flow raising frame at the lower part of the middle of the bias flow frame, the three water flows can generate intersection impact, the three water flows interact to realize the purpose of falling into an energy dissipation groove after being dissipated, the water flow is prevented from directly rushing into the energy dissipation groove, thus the impact force of the water flow on the energy dissipation groove can be reduced by the self kinetic energy of the water flow, the service life of the energy dissipation groove is prolonged, and the maintenance cost is reduced.

Description

Overflow dam structure

Technical Field

The application relates to the overflow dam field, concretely relates to overflow dam structure.

Background

An overflow dam is a dam whose top can discharge flood, also called a rolling dam, and is generally made of concrete. The overflow dam is used for discharging flood, high-level water is let to pass through a dam body to play a role in reducing the load of the dam, and after the water flows through the overflow dam and flows down along the dam body, because the position of the dam body is high, after gravitational potential energy is converted into kinetic energy, the water flow close to the bottom of the dam body is fast in speed, strong impact force is achieved, damage to a dam foundation can be caused without energy dissipation treatment, the service life of the dam is reduced.

SUMMERY OF THE UTILITY MODEL

The application provides an overflow dam structure to solve the unsatisfactory problem of present energy dissipation effect, prolong the life of energy dissipation groove, reduce the maintenance cost.

According to an aspect of the present application, there is provided in one embodiment an overflow dam structure comprising: the dam body and the energy dissipation tail plate are respectively positioned on two sides of the energy dissipation groove, overflow piers and overflow holes are arranged at the top end of the dam body at intervals, and water flow can flow out of the overflow holes;

one surface of the dam body, which is close to the energy dissipation groove, is an overflow surface, the other surface of the dam body, which is far away from the energy dissipation groove, is an inflow surface, and a bias flow frame and a flow-picking frame are arranged on the overflow surface, wherein the bias flow frame is of two oppositely-arranged flow-guiding structures, and arc-shaped concave surfaces are arranged on the opposite surfaces of the bias flow frame, so that water flow passing through the bias flow frame can be guided and deflected, and the water flow passing through the bias flow frame can fly out obliquely; the flow picking frame is arranged below the flow deflecting frame, an arc-shaped concave surface is arranged on the upper surface of the flow picking frame, water flows can fly out obliquely upwards through the flow picking frame, and the flow deflecting frame and the flow picking frame are arranged in a matched mode, so that the water flows through the flow deflecting frame and the flow picking frame to intersect.

In one embodiment, the dam body is further provided with at least one adjusting channel, and a channel blocking frame is arranged on the flow deviating surface and above the position of the adjusting channel, and can prevent water from flowing backwards into the adjusting channel.

In one embodiment, a valve mechanism is further disposed on the inflow surface, and the valve mechanism can control whether water can flow through the adjusting channel.

In one embodiment, the valve mechanism comprises a guide frame, a sliding baffle, a baffle lifting rod and a connecting beam, the guide frame is matched with the adjusting channel, the sliding baffle is connected with the guide frame in a sliding manner, and the sliding baffle can block the adjusting channel; the top of the sliding baffle is connected with one end of a baffle lifting rod, the other end of the baffle lifting rod is connected with the connecting beam, and the connecting beam is jacked upwards to drive the sliding baffle to rise along with the baffle lifting rod so as to open the adjusting channel.

In one embodiment, the valve mechanism further comprises a top frame arranged above the overflow pier, an electric control oil cylinder and a switch frame are arranged above the top frame, a delay switch matched with the electric control oil cylinder is arranged on the switch frame, a floater is arranged at the bottom of the switch frame, the delay switch on the switch frame can be triggered when the floater floats, so that the electric control oil cylinder is triggered, and the connecting beam can be jacked up by the electric control oil cylinder.

In one embodiment, the float is connected with the switch frame through a float lifting rod, and a contact is arranged between the float lifting rod and the switch frame.

In one embodiment, the guide frame is arranged on the adjusting channel through a plate frame, and the plate frame is provided with water through holes with the same aperture size as that of the adjusting channel;

the anterior position of roof-rack has the outrigger, the switch frame is installed outrigger upper portion, the mounting groove has been seted up on the dam body, the mounting groove with the position of adjusting the passageway is corresponding, the mounting groove with the grillage adaptation, the grillage is inlayed in the mounting groove.

In one embodiment, the flapper lifting lever and the float lifting lever are each equipped with a guide sleeve, which is arranged on the head frame.

In one embodiment, the channel blocking frame and the energy dissipation tail plate are provided with at least one through hole.

In one embodiment, at least one layer of energy dissipation step is further arranged on the overflow surface.

According to the overflow dam structure of the above embodiment, when the water level rises to the position of the overflow pier, water can flow through the dam body through the overflow holes formed by the overflow pier at the top of the dam body, the water flowing through the dam body flows to the bias flow frames, the bias flow frames are arranged in pairs and are arranged oppositely, so that when water flowing down from the dam surface passes through the bias flow frames, the two bias flow frames can guide and divert the water flow, the water flow passing through the bias flow frames obliquely flies out, the cantilever frame at the lower part of the bias flow frame on the overflow surface has an elevation angle, the water flow obliquely flies out upwards after passing through the cantilever frame, the bias flow frame is matched with the cantilever frame at the lower part of the middle of the bias flow frame, the three water flows are subjected to intersection impact, the three water flows interact to realize the purpose of scattering and then falling into the energy dissipation groove, the water flow is prevented from directly rushing into the energy dissipation groove, and the impact force of the water flow on the energy dissipation groove can be reduced by the self-kinetic energy of the water flow, the service life of the energy dissipation groove is prolonged, and the maintenance cost is reduced.

Drawings

Fig. 1 is a schematic view of an overflow dam according to an embodiment of the present invention;

fig. 2 is a schematic perspective view of a dam body of an overflow dam according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of FIG. 2 after being flipped;

FIG. 4 is a schematic left side view of the structure of FIG. 1;

FIG. 5 is a schematic view of the connection beam of FIG. 4 after it has been raised;

FIG. 6 is a schematic view of the switch bracket of FIG. 4 with the switch bracket removed;

FIG. 7 is an enlarged, fragmentary view of the encircled portion of FIG. 1;

FIG. 8 is a schematic view of the switch bracket of FIG. 7 with the switch bracket removed;

FIG. 9 is a schematic structural view of the guide frame of FIG. 4;

FIG. 10 is a sectional view taken along line A-A of FIG. 9;

FIG. 11 is a bottom view of FIG. 9;

FIG. 12 is a schematic view of the position of the bias flow frame and the pick-up frame of FIG. 2.

In the figure: 1. the dam comprises a dam body, 2, an energy dissipation groove, 3, an energy dissipation tail board, 4, an overflow pier, 5, an upper frame, 6, an energy dissipation step, 7, a channel blocking frame, 8, a bias flow frame, 9, a flow-picking frame, 10, an adjusting channel, 11, a guide frame, 12, a sliding baffle, 13, a baffle lifting rod, 14, a connecting beam, 15, an electric control oil cylinder, 16, a floater lifting rod, 17, a floater, 18, a contact, 19, a switch frame, 20, a delay switch, 21, a through hole, 22, a plate frame, 23, a water through hole, 24, a protruding frame, 25, an overflow hole, 26, a mounting groove, 27 and a guide sleeve.

Detailed Description

The present application will be described in further detail below with reference to the accompanying drawings by way of specific embodiments. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments, and the operation steps involved in the embodiments may be interchanged or modified in order as will be apparent to those skilled in the art. Accordingly, the description and drawings are merely for clarity of description of certain embodiments and are not intended to necessarily refer to a required composition and/or order.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

According to the background art, the conventional treatment method for dissipating the energy of flood discharge water flow is to add an energy dissipation step on a dam body, the flow speed of the water flow is reduced after the water flow passes through the multistage energy dissipation steps, but the laying cost of the energy dissipation steps is high, the energy dissipation effect is not ideal if the laying length is not enough, the energy dissipation steps are also easily eroded and damaged by the water flow, and the maintenance cost is high.

The flexibility of the flood discharge flow of the currently used overflow dam is low, and the sudden large-water-volume flood discharge condition is difficult to deal with.

In the overflow dam structure of this embodiment, when the water level rises to the position of the overflow pier, water can flow through the dam body through the overflow holes formed by the overflow pier at the top of the dam body, the water flowing through the dam body flows to the bias flow frames, the bias flow frames are arranged in pairs and in a group, so that when water flowing down from the dam surface passes through the bias flow frames, the two bias flow frames can guide and divert the water flow, so that the water flow passing along the bias flow frames obliquely flies out, on the overflow surface, the cantilever frame at the lower part of the bias flow frame has an elevation angle, the water flow obliquely flies out after passing through the cantilever frame, and the bias flow frame and the cantilever frame below the middle part of the bias flow frame are matched, three water flows are subjected to intersection impact, and interact with each other to realize the purpose of scattering and then falling into the energy dissipation groove, thereby preventing the water flow from directly rushing into the energy dissipation groove, so that the impact of the water flow on the energy dissipation groove can be reduced by the self-kinetic energy of the water flow, the service life of the energy dissipation groove is prolonged, and the maintenance cost is reduced.

Referring to fig. 1 to 12, the present embodiment provides an overflow dam structure, including: the dam comprises a dam body 1, an energy dissipation groove 2 and an energy dissipation tail plate 3, wherein the dam body 1 and the energy dissipation tail plate 3 are respectively located on two sides of the energy dissipation groove 2, overflow piers 4 and overflow holes 25 which are arranged at intervals are arranged at the top end of the dam body 1, and water flow can flow out of the overflow holes 25. One surface of the dam body 1 close to the energy dissipation groove 2 is an overflow surface, and the other surface of the dam body away from the energy dissipation groove 2 is an inflow surface.

In this embodiment, the dam body 1 is similar to a trapezoid, and the overflow surface is a trapezoid surface.

In this embodiment, the energy dissipation tail plate 3 is provided with at least one through hole 21, and a part of water flow passing through the energy dissipation tail plate 3 can flow through the through hole 21, so that the impact of the water flow on the energy dissipation groove is reduced, and the service life of the energy dissipation groove is prolonged.

The overflow surface is provided with a bias flow frame 8 and a flow-picking frame 9, wherein the bias flow frame 8 is two oppositely-arranged flow-guiding structures, and the opposite surface of the bias flow frame 8 is provided with an arc-shaped concave surface which can guide and redirect the water flow passing through the bias flow frame 8 so as to enable the water flow passing through the bias flow frame 8 to obliquely fly out; the flow picking frame 9 is arranged below the bias flow frame 8, an arc concave surface is arranged on the upper surface of the flow picking frame 9, water flows can fly upwards obliquely through the flow picking frame 9, and the bias flow frame 8 and the flow picking frame 9 are arranged in a matched mode, so that the water flows through the bias flow frame 8 and the flow picking frame 9 to intersect.

In this embodiment, the bias flow frames 8 are a pair of two sets of opposite guide flow structures, each guide flow structure forms a wide-top and narrow-bottom flow guide structure, the opposite surfaces of the guide flow structures are provided with arc concave surfaces, and when water flowing up and down on the dam surface passes through the bias flow frames 8, the adaptive bias flow frames 8 can guide and change the direction of the water flow, so that the water flow flowing along the bias flow frames flies out in an inclined manner. A plurality of groups of the deflecting frames 8 can be arranged on the overflow surface of each dam body 1.

In this embodiment, it sets up between two liang of relative drainage structures to choose flow frame 9, the upper surface of choosing flow frame 9 has the angle of elevation for the arc concave surface, can make the rivers slant of process upwards fly out, two mutual arrangement's drainage structures with lie in the drainage structures in the middle of choose the flow frame cooperation, three rivers can take place to cross and strike, three rivers interact realizes falling into the purpose in the energy dissipation inslot again after breaking away, have avoided rivers directly to rush into the energy dissipation groove.

In this embodiment, the number of the flow-picking frames 9 may be the same as that of the flow deflecting frame 8, or may be more than that of the flow deflecting frame 8.

In this embodiment, the dam body 1 is further provided with at least one adjusting channel 10, the adjusting channel 10 is located on the deviated flow surface and above the position of the adjusting channel 10, and a channel blocking frame 7 is arranged, and the channel blocking frame 7 can prevent water from flowing backwards into the adjusting channel 10.

The channel blocking frame 7 is provided with at least one through hole 21, so that the flood discharge flow can be increased, and the flow velocity of water flow can be reduced.

In this embodiment, a valve mechanism is further disposed on the inflow surface, and the valve mechanism can control whether water can flow through the adjusting channel 10.

Valve mechanism includes leading truck 11, slide damper 12, baffle lifter 13 and tie-beam 14, leading truck 11 with adjust passageway 10 adaptation, slide damper 12 with leading truck 11 sliding connection, slide damper 12 can block adjust passageway 10. The slide shutter 12 slides along the guide frame 11, so that the slide shutter 12 opens or closes the adjustment passage 10.

The top of the sliding baffle 12 is connected with one end of a baffle lifting rod 13, the other end of the baffle lifting rod 13 is connected with the connecting beam 14, and the connecting beam 14 is jacked upwards to drive the sliding baffle 12 to lift along with the baffle lifting rod 13 so as to open the adjusting channel 10. When the flood is very large and the connecting beam 14 is jacked up, the sliding baffle 12 can be driven to rise along with the baffle lifting rod 13, the adjusting channel 10 is opened, and the flood discharge flow is improved.

In this embodiment, the valve mechanism further comprises an upper frame 5 arranged above the overflow pier 4, an electric control oil cylinder 15 and a switch frame 19 are installed above the upper frame 5, a delay switch 20 matched with the electric control oil cylinder 15 is installed on the switch frame 19, a floater 17 is arranged at the bottom of the switch frame 19, the delay switch 20 on the switch frame 19 can be triggered when the floater 17 floats, so that the electric control oil cylinder 15 is triggered, and the connecting beam 14 can be jacked when the electric control oil cylinder 15 works.

The delay switch 20 of the electric control oil cylinder 15 only needs to meet the requirement that the electric control oil cylinder can reset after one touch after a set time.

In this embodiment, the float 17 is connected to the switch frame 19 through a float lifting rod 16, and a contact 18 is provided between the float lifting rod 16 and the switch frame 19.

In this embodiment, the guide frame 11 is disposed on the adjusting channel 10 through a plate frame 22, and the plate frame 22 is provided with a water through hole 23 having the same aperture size as that of the adjusting channel 10.

In the present embodiment, the barrier lifting rod 13 and the float lifting rod 16 are each equipped with a guide sleeve 27, and the guide sleeve 27 is disposed on the upper frame 5.

In this embodiment, at least one layer of energy dissipation step 6 may be further disposed on the overflow surface, for example, one layer of energy dissipation step 6 may be disposed above and below the deflecting frame 8 and the cantilever frame 9, respectively, to further reduce the flow velocity of the water flow.

The overall working process and principle of the overflow dam structure in this embodiment may be as follows: when the overflow dam structure is used, the initial position of the sliding baffle 12 is located in the guide frame 11 and blocks the adjusting channel 10, at this time, water cannot pass through the dam body 1 through the adjusting channel 10, when the water level rises to the position of the overflow pier 4, water can flow through the overflow hole 25 formed by the overflow pier 4 at the top of the dam body 1 and flow through the dam body 1, the water flowing through the dam body 1 passes through the energy dissipation step 6 and the channel baffle frame 7 and is primarily energy-dissipated, the channel baffle frame 7 can prevent the water from flowing back into the adjusting channel 10, the water after primary energy dissipation flows to the drift frame 8, the water obliquely flies out along the water flowing through the drift frame 8, the flip frame 9 at the lower part of the dam face has an elevation angle, the water obliquely flies out upwards after passing through the flip frame 9, the three water flows are matched with the flip frame 9 and are subjected to intersection impact, and interact with each other to achieve the purpose of falling into the energy dissipation groove 2 after being flushed, the direct rushing of water flow into the energy dissipation groove 2 is avoided, so that the impact force of the water flow on the energy dissipation groove 2 can be reduced by utilizing the kinetic energy of the water flow, the service life of the energy dissipation groove 2 is prolonged, and the maintenance cost is reduced.

Further, when the water level rises rapidly due to heavy rainfall weather, the overflow amount only through the overflow hole 25 is difficult to meet the flood discharge requirement, at this time, as the water level rises, the float 17 is lifted by the water surface, then the top end of the float lifting rod 16 rises, until the contact 18 at the top end of the float lifting rod 16 touches the delay switch 20 on the switch frame 19, then the electric control oil cylinder 15 is started, the piston rod of the electric control oil cylinder 15 extends to jack the connecting beam 14, the connecting beam 14 is connected with the baffle lifting rod 13, therefore, the sliding baffle 12 rises along with the baffle connecting rod 13, and the sliding baffle 12 is in sliding fit with the guide frame 11, the design makes the lifting action of the sliding baffle 12 stable and reliable, the guide frame 11 is embedded in the installation groove 26 of the dam body 1 through the plate frame 22, the design makes the guide frame 11 replaceable, when the matching tightness of the sliding baffle 12 and the guide frame 11 is reduced to cause the water leakage of the adjusting channel 10, can solve through the mode of changing leading truck 11, slide damper 12 is along with the tie-beam 14 back that rises, then adjusts the passageway 10 and no longer sheltered from, and water can directly flow through adjusting the passageway 10 this moment and flow dam body 1, so has increased the flood discharge flow, realizes the purpose of quick reduction water level, avoids the water level to exceed roof-rack 5.

Since the electronic control oil cylinder 15 can be reset after a set time after being touched once, the piston rod of the electronic control oil cylinder 15 is reset after the electronic control oil cylinder 15 lifts the connecting beam 14 for a set time, so that the sliding baffle 12 is lowered, and the adjusting channel 10 is blocked again. If the water level still fails to drop after the sliding baffle 12 drops after a set time, the electric control cylinder 15 will press the delay switch 20 again by the contact 18 at the top end of the float lifting rod 16 to lift the connecting beam 14 again, so as to achieve the purpose of continuing to discharge water in the adjusting channel 10.

The overflow dam structure in this implementation can adjust the flood discharge flow according to the water level, and the suitability is strong, can increase the flood discharge under the prerequisite that satisfies the retaining water level, the load of dam body when reducing the large water yield to can utilize the different flow direction energy dissipations of rivers, have very much and be suitable for using widely.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the utility model and are not intended to be limiting. For a person skilled in the art to which the utility model pertains, several simple deductions, modifications or substitutions may be made according to the idea of the utility model.

Claims

1. An overflow dam structure comprising: the energy dissipation dam comprises a dam body (1), energy dissipation grooves (2) and energy dissipation tailboards (3), wherein the dam body (1) and the energy dissipation tailboards (3) are respectively located on two sides of the energy dissipation grooves (2), overflow piers (4) and overflow holes (25) are arranged at the top end of the dam body (1) at intervals, and water flow can flow out of the overflow holes (25);

one surface of the dam body (1) close to the energy dissipation groove (2) is an overflow surface, the other surface of the dam body away from the energy dissipation groove (2) is an inflow surface, a bias flow frame (8) and a flow picking frame (9) are arranged on the overflow surface, wherein the bias flow frame (8) is two oppositely-arranged flow guiding structures, and arc-shaped concave surfaces are arranged on the opposite surfaces of the bias flow frame (8) and can guide and divert water flow passing through the bias flow frame (8) so that the water flow flowing along the bias flow frame (8) obliquely flies out; the flow-picking frame (9) is arranged below the flow-picking frame (8), the upper surface of the flow-picking frame (9) is provided with an arc-shaped concave surface, water flows through the flow-picking frame (9) and can fly upwards in an inclined mode, and the flow-picking frame (8) and the flow-picking frame (9) are arranged in a matched mode, so that the water flows through the flow-picking frame (8) and the flow-picking frame (9) to intersect.

2. The overflow dam structure of claim 1, wherein the dam body (1) is further provided with at least one adjusting channel (10), and a channel blocking frame (7) is arranged on the flow deviating surface and above the position of the adjusting channel (10), wherein the channel blocking frame (7) can prevent water from flowing backwards into the adjusting channel (10).

3. An overflow dam structure as claimed in claim 2, characterized in that a valve means is provided on the inflow surface, said valve means being capable of controlling whether water can flow through the regulating passage (10).

4. The overflow dam structure according to claim 3, characterized in that the valve mechanism comprises a guide frame (11), a slide damper (12), a damper lifting rod (13) and a connection beam (14), the guide frame (11) is adapted to the adjustment channel (10), the slide damper (12) is slidably connected to the guide frame (11), and the slide damper (12) can block the adjustment channel (10); the top of the sliding baffle (12) is connected with one end of a baffle lifting rod (13), the other end of the baffle lifting rod (13) is connected with the connecting beam (14), and the connecting beam (14) is jacked upwards to drive the sliding baffle (12) to lift along with the baffle lifting rod (13) so as to open the adjusting channel (10).

5. The overflow dam structure according to claim 4, characterized in that the valve mechanism further comprises a top frame (5) disposed above the overflow pier (4), an electrically controlled cylinder (15) and a switch frame (19) are mounted above the top frame (5), a delay switch (20) adapted to the electrically controlled cylinder (15) is mounted on the switch frame (19), a float (17) is disposed at the bottom of the switch frame (19), the delay switch (20) on the switch frame (19) can be triggered when the float (17) floats, so as to trigger the electrically controlled cylinder (15), and the electrically controlled cylinder (15) can be operated to jack the connecting beam (14).

6. Overflow dam structure according to claim 5, characterized in that said float (17) is connected to said switch frame (19) by means of a float lifting bar (16), and that a contact (18) is provided between said float lifting bar (16) and said switch frame (19).

7. The overflow dam structure according to claim 5, characterized in that the guide frame (11) is arranged on the adjusting channel (10) through a frame (22), and the frame (22) is provided with water through holes (23) with the same size as the aperture of the adjusting channel (10);

the anterior position of roof-rack (5) has outstanding frame (24), switch rack (19) are installed outstanding frame (24) upper portion, mounting groove (26) have been seted up on dam body (1), mounting groove (26) with the position of adjusting passageway (10) is corresponding, mounting groove (26) with grillage (22) adaptation, grillage (22) are inlayed in mounting groove (26).

8. Overflow dam structure according to claim 5, characterized in that said apron lifting rod (13) and said float lifting rod (16) are each equipped with a guide sleeve (27), said guide sleeves (27) being arranged on said top frame (5).

9. An overflow dam structure according to claim 2 wherein at least one passage hole (21) is provided in each of the channel block (7) and the energy dissipating tail sheet (3).

10. An overflow dam structure according to claim 1 wherein the overflow surface is further provided with at least one energy dissipating step (6).