CN114182699B - Energy dissipation flow control device for discharging ecological flow and gate horizontal pressure - Google Patents
Energy dissipation flow control device for discharging ecological flow and gate horizontal pressure Download PDFInfo
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- CN114182699B CN114182699B CN202111668410.XA CN202111668410A CN114182699B CN 114182699 B CN114182699 B CN 114182699B CN 202111668410 A CN202111668410 A CN 202111668410A CN 114182699 B CN114182699 B CN 114182699B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The application discloses an energy dissipation flow control device for discharging ecological flow and gate horizontal pressure, which comprises a water discharge hole (hole) runner, a radial working gate hoist operating chamber platform, a discharging ecological flow main pipeline device, a horizontal pressure filling pipeline device arranged at the lower part of the discharging ecological flow main pipeline device, an energy dissipation vertical pipe device and a power dissipation vertical shaft energy dissipation device, wherein the tail end of a water discharge pipeline of the energy dissipation vertical pipe device is provided with a symmetrical outflow port or a water cushion pond arranged under a central tail end outlet of the water discharge pipeline, and the horizontal pressure filling pipeline device is provided with a symmetrical outflow port at the tail end of a flat pressure pipeline of the horizontal pressure filling pipeline device. According to the main pipeline device for discharging ecological flow and the horizontal-filling pipeline device arranged at the lower part of the main pipeline device, the corresponding water-discharging valves are arranged on all pipelines to control flow, the dual-purpose requirements of discharging ecological flow and gate horizontal-filling pressure are met, the flow speed of the lower water-discharging body is reduced to a greater extent after multiple energy dissipation effects, the impact effect on the water-discharging hole (hole) flow channel is small, and the safety of the water-discharging hole (hole) flow channel is guaranteed.
Description
Technical Field
The application relates to the technical field of metal structures of water conservancy and hydropower engineering, in particular to an energy dissipation flow control device for discharging ecological flow and gate horizontal pressure.
Background
At present, the running period of the high dam hydroelectric engineering mainly utilizes the downward flow of the unit power generation to meet the ecological requirement of the downstream, and when the unit is stopped, the ecological flow is generally discharged through the radial gates arranged at different heights of the water discharge system, for example, the radial working gates arranged at the positions of spillways, spillways holes, spillway dam surface holes, flood discharge middle holes, flood discharge holes, discharge bottom holes and the like are used for locally opening the ecological flow. Because the water-electricity engineering of the high dam has larger discharge, such as North disk Jiang Dong, illumination, first level of horse Ma Ya, wujiang Cilin, sand Tuo, beach, and the like, the flood discharge scale is generally 10000m 3 Above/s this results in large aperture sizes for radial working gates and significant problems with local opening vibration of gates under high velocity water flow.
Based on engineering operation safety requirements, when the arc-shaped working gate operates, a vibration area is avoided, so that the opening degree of the gate is usually larger than the required opening degree, the control leakage capacity of the arc-shaped working gate is poor, the lower leakage flow exceeds the required ecological flow, and the waste of water energy is caused; and the motor of the gate opening and closing device has larger power, high energy consumption and poor energy-saving effect. If the project adopts the special ecological water discharge hole to discharge flow, the ecological water discharge hole is usually longer in size and larger in investment, and when the water discharge valve is operated at an ultra-high water head, the outlet flow speed is higher and is usually more than 15m/s, and the problems of serious tunnel flushing caused by high-speed water flow and the like are also caused; in addition, for the deep hole accident gate of the water discharge system, the water filling valve at the top of the gate is utilized to realize flat pressure, the closing vibration of the water filling valve body is strong under high-speed water flow, the impact of the water flow at the outlet of the water filling valve on the gate sill is large, the cleaning damage is easy to occur, and the water is seriously leaked due to the interference of foreign matters.
Therefore, the prior art has the defects and needs to be further perfected.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the application provides an energy dissipation and flow control device for discharging ecological flow and gate charging level pressure. The main pipeline device for discharging ecological flow and the horizontal pressure filling pipeline device arranged at the lower part of the main pipeline device for discharging ecological flow are provided with corresponding water discharge valves for controlling flow, and the dual-purpose requirements of discharging ecological flow and gate horizontal pressure filling are met.
The technical scheme of the application is as follows: the utility model provides an ecological flow and gate fill energy dissipation accuse flow device of horizontal pressure, includes the sluice hole runner, and top one side or the symmetry both sides of sluice hole runner are equipped with radial working gate headstock gear operating chamber platform, set up ecological flow trunk line device that releases on the radial working gate headstock gear operating chamber platform, ecological flow trunk line device lower part that releases is equipped with fills horizontal pressure pipeline device.
In the energy dissipation flow control device for discharging the ecological flow and filling the horizontal pressure of the gate, the main pipeline device for discharging the ecological flow comprises a trash device, a front inlet main pipe, an accident valve, a rear inlet main pipe, an expansion joint, a working valve, a valve outlet elbow pipe and an energy dissipation vertical pipe which are sequentially arranged along the water flow direction.
In the energy dissipation flow control device for discharging the ecological flow and filling the horizontal pressure of the gate, the energy dissipation standpipe device comprises a flange for connecting an outlet elbow of the valve and a standpipe connected with the flange, a flow outlet pipe is annularly and uniformly arranged on the standpipe, a standpipe outlet force dissipation rib plate is arranged beside the flow outlet pipe, and the end part of a flow outlet port of the flow outlet pipe is connected with the flap valve; the energy dissipation vertical pipe device is provided with a reinforcing plate; and the energy dissipation vertical pipe device is provided with a fixed support steel ring.
In the energy dissipation flow control device for discharging the ecological flow and filling the horizontal pressure of the gate, the energy dissipation vertical pipe device is arranged in the stilling shaft; the bottom of the water outlet main pipe of the absorption vertical shaft is higher than the top of the water outlet pipe of the energy absorption vertical pipe device.
In the energy dissipation flow control device for discharging ecological flow and filling horizontal pressure of the gate, the upper part of the stilling shaft is provided with a circular cavity, and the upper circular cavity is provided with a main water outlet pipe; the water outlet main pipe is symmetrically divided into two branch pipes by a group of bent pipes, transverse straight pipes, vertical straight pipes and three-way pipes to be led to the side hole wall on the upper part of the back water discharge tunnel of the arc-shaped working gate or to the middle position of the top of the back water discharge tunnel of the arc-shaped working gate, and a plunge pool is arranged under the outflow port of the water outlet main pipe.
In the energy dissipation flow control device for discharging ecological flow and filling horizontal pressure of the gate, a manhole is arranged above the circular cavity at the upper part of the stilling shaft, and is provided with a sealing cover plate.
In the energy dissipation flow control device for discharging the ecological flow and filling the horizontal pressure of the gate, the middle part of the absorption vertical shaft is provided with a polygonal annular convex body or a circular annular convex body; the polygonal annular convex body is of a trapezoid cross-section structure or a rectangular cross-section structure provided with triangular rib plates.
In the energy dissipation flow control device for discharging ecological flow and filling horizontal pressure of the gate, the lower part of the absorption shaft is provided with a conical cavity or a lower circular cavity with triangular absorption rib plates annularly arranged.
In the energy dissipation flow control device for discharging ecological flow and filling horizontal pressure of the gate, the fixed support steel ring is connected and fixed into a whole with the polygonal annular convex body in the middle or the T-shaped frame arranged on the annular convex body through the I-shaped bracket by bolts; the T-shaped frame is welded and fixed with the polygonal annular convex body in the middle or the embedded steel plate arranged on the outer side of the annular convex body.
In the energy dissipation flow control device for discharging ecological flow and filling horizontal pressure of the gate, the water filling horizontal pressure pipeline device comprises an inlet horizontal pressure pipe arranged on an arc-shaped working gate maintenance platform, and a horizontal pressure pipe accident valve, a horizontal pressure pipe expansion joint, a horizontal pressure pipe working valve and a valve outlet pipe are sequentially arranged in the outflow direction of the inlet horizontal pressure pipe; the inlet flat pressing pipe is arranged at the lower part of the inlet rear main pipe; the single side of the valve outlet pipe is symmetrically divided into two branch pipes through a group of bent pipes, a transverse straight pipe, a vertical pipe and a three-way pipe or is symmetrically led to the side hole wall at the upper part of the water discharge tunnel between the accident gate and the arc-shaped working gate through a group of bent pipes and vertical pipes.
In the energy dissipation flow control device for discharging ecological flow and gate horizontal pressure, the operating chamber platform of the arc-shaped working gate hoist is communicated with the top platform of the stilling shaft; the top platform of the stilling shaft is connected with a step, and the step is connected with the main water pipe platform.
Compared with the prior art, the application has the following beneficial effects:
1. the dam hydroelectric engineering fully utilizes the drainage ecological flow main pipeline device and the horizontal pressure filling pipeline device arranged at the lower part of the drainage ecological flow main pipeline device which are arranged at one side or two symmetrical sides on the operating chamber platform of the radial working gate hoist at the top of the drainage hole (hole) runner, and each pipeline is provided with a corresponding drainage valve to control flow, so that the two-purpose requirements of drainage ecological flow and gate horizontal pressure filling are met.
2. The water draining pipeline of the ecological draining device is led to the side hole wall of the upper part of the arc-shaped working gate rear draining tunnel after energy dissipation of the energy dissipation vertical pipe device and the energy dissipation vertical shaft to perform outlet water flow clash energy dissipation or the water cushion pond energy dissipation of outlet water flow at the middle position of the top of the arc-shaped working gate rear draining tunnel, so that the ecological flow is drained through the special draining device under the condition that the special ecological draining tunnel is not arranged, the investment is saved, constant and accurate flow can be drained according to the requirements of a power station, water energy waste caused by excessive flow is avoided, the power of a water draining valve motor is low, the energy consumption relative to the gate is low, the electric energy waste is avoided, and the national energy saving and emission reduction requirements are met; in addition, when the ecological flow is released, the flow speed of the lower water discharge body is greatly reduced after the energy dissipation effect is carried out for a plurality of times, the impact effect on the water discharge hole (hole) flow channel is smaller, and the safety of the water discharge hole (hole) flow channel is ensured.
3. The deep hole accident gate of the water drainage system adopts a horizontal pressure filling pipeline device to carry out horizontal pressure filling and is arranged at the rear part of the accident valve of the main pipeline device for discharging ecological flow, the gate adopts a water drainage valve to carry out horizontal pressure filling, a horizontal pressure filling valve is not required to be arranged on the gate, the difficulty of operating the gate water filling valve under water of opening and closing equipment is avoided, and the reliability of the horizontal pressure filling of the gate is effectively improved; in addition, the water discharge valve can control the flow, the outlet flow speed is effectively controlled, and the outlet water flow dissipates energy through collision, so that the flow speed of the water flow reaching the sill is reduced, and the impact damage effect of the water flow on the sill is reduced; when the accident valve of the horizontal pressure filling pipeline device fails and the inlet flat pressure pipe is damaged, the accident valve of the ecological flow discharging main pipeline device can be closed to cut off water flow for maintenance, and compared with the traditional method, the horizontal pressure filling pipeline is independently arranged, so that maintenance conditions are provided for the accident valve and the inlet flat pressure pipe; and when the working valve, the expansion joint and the pipeline behind the accident valve are required to be overhauled and maintained, the water flow is intercepted by closing the flat-pressure accident valve, the normal operation of the main pipeline device for discharging the ecological flow is not influenced, compared with the traditional gate adopting the gate top water filling valve to perform flat-pressure failure, the overhaul efficiency and the safety are improved because the gate is in the condition of large underwater treatment difficulty.
4. The energy dissipation standpipe device adopts a damping-increasing structure such as a circular evenly arranged outlet pipe, a flap valve, a force dissipation rib plate arranged at the outlet end of the standpipe at the lower part, and the like, so that the water flow rate at the outlet of the energy dissipation standpipe device is reduced.
5. The energy dissipation vertical pipe device is arranged in the energy dissipation vertical pipe, the bottom of the water outlet main pipe of the energy dissipation vertical pipe is higher than the top of the uppermost water outlet pipe of the energy dissipation vertical pipe device, so that the energy dissipation vertical pipe device is in a submerged outflow state, and the damping effect of water in the energy dissipation vertical pipe device on water flow at the outlet of the energy dissipation vertical pipe device is achieved through the water in the energy dissipation vertical pipe, so that the flow rate of water at the outlet of the energy dissipation vertical pipe device is reduced; the middle part of the absorption shaft is provided with an annular convex body or a polygonal annular convex body, the annular convex body or the polygonal annular convex body in the middle part adopts a trapezoid cross-section structure or a rectangular cross-section structure with triangular rib plates, the blocking effect on outlet water flow is increased by locally reducing the overflow area of the absorption shaft, and the collision energy dissipation effect of the lower conical cavity or the lower circular cavity of the triangular absorption rib plates is reduced, so that the water flow velocity of the main water pipe of the absorption shaft is reduced.
6. The outlet water flow of the ecological flow device is discharged to the flow passage of the water discharge hole (hole) by adopting collision energy dissipation or energy dissipation of the plunge pool, so that the impact on the flow passage of the water discharge hole (hole) is reduced while the ecological flow discharge is satisfied.
7. The fixed support steel ring of the energy dissipation standpipe device is connected and fixed into a whole by adopting an I-shaped bracket and a circular annular convex body in the middle or a T-shaped bracket arranged on the polygonal annular convex body by adopting bolts, so that the stability of the energy dissipation standpipe device is enhanced, and the vibration of the energy dissipation standpipe device during outflow is reduced; the energy dissipation standpipe device can be assembled and separated by installing and removing the connecting bolts of the I-shaped support and the T-shaped support, and is convenient for overhauling and maintenance of the energy dissipation standpipe device.
8. The absorption shaft is provided with a manhole and a sealing cover plate, the top platform of the absorption shaft is communicated with the operating chamber platform of the radial working gate hoist, the rear part of the absorption shaft is provided with a water outlet main pipe platform, and the top platform of the absorption shaft is provided with a step which is connected with the water outlet main pipe platform, so that a pipeline is convenient to overhaul and pedestrian safety is guaranteed.
9. The accident valve, the expansion joint and the working valve of the horizontal pressure filling pipeline device are arranged on the arc-shaped working gate maintenance platform, and are arranged in an exposed mode, so that maintenance is facilitated.
10. The inlet of the main pipeline device for discharging ecological flow is provided with the trash device, so that damage to the valve caused by large dirt entering the pipeline is reduced, and the service life of the valve is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a schematic illustration of an arrangement of an embodiment of the present application;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a B-B cross-sectional view of FIGS. 1, 13, 15;
FIG. 4 is a cross-sectional view C-C of FIGS. 1, 13, 15;
FIG. 5 is a D-D sectional view of FIGS. 1, 13;
FIG. 6 is a sectional E-E view of FIG. 5;
FIG. 7 is a schematic diagram of a second arrangement of an embodiment of the present application;
FIG. 8 is a cross-sectional F-F view of FIG. 7;
FIG. 9 is a G-G cross-sectional view of FIG. 7;
FIG. 10 is a section view H-H of FIG. 7;
FIG. 11 is a sectional view I-I of FIG. 7;
FIG. 12 is a J-J cross-sectional view of FIG. 11;
FIG. 13 is a schematic view of a third arrangement of an embodiment of the present application;
FIG. 14 is a sectional view of K-K of FIGS. 13 and 15;
FIG. 15 is a schematic view of a fourth arrangement of an embodiment of the present application;
FIG. 16 is an N-N cross-sectional view of FIG. 15;
FIG. 17 is a cross-sectional O-O view of FIG. 16;
FIG. 18 is a schematic view of an embodiment of the energy dissipating standpipe arrangement; (the upper left side of the figure is a front view, and the lower left side is a top view);
FIG. 19 is a schematic view of a second embodiment of the energy dissipating standpipe arrangement; (the upper left side of the figure is a front view, and the lower left side is a top view);
FIG. 20 is a schematic structural view of a rectangular cross-section scheme (I) for a relief shaft with triangular ribs;
FIG. 21 is a schematic view of a rectangular cross section scheme (II) of a relief shaft with triangular ribs;
FIG. 22 is a schematic structural view of a relief shaft employing a rectangular cross-section solution (III) with triangular ribs;
fig. 23 is a schematic structural view of a rectangular cross section scheme (IV) of the stilling shaft with triangular rib plates.
In the figure: 1-spillway runner, 2-arc working gate hoist operating room platform, 3-spillway ecological flow main pipeline device, 4-horizontal pressure pipeline device, 5-trash device, 6-front inlet main pipe, 7-accident valve, 8-rear inlet main pipe, 9-expansion joint, 10-working valve, 11-valve outlet elbow pipe, 12-energy dissipation vertical pipe device, 13-concrete, 14-flange, 15-absorption vertical pipe, 16-vertical pipe, 17-vertical pipe outlet absorption rib plate, 18-fixed support steel ring, 19-reinforcing plate, 20-outlet pipe, 21-flap valve, 22-inlet manhole, 24-polygonal annular convex body, 25-conical cavity, 26-sealing cover plate, 27-outlet main pipe 28-elbow pipe, 29-horizontal straight pipe, 30-vertical pipe, 31-three-way pipe, 32-branch pipe, 33-arc working gate, 34-side hole wall, 36-I-shaped bracket, 37-T-shaped bracket, 38-bolt, 39-trapezoid cross section structure, 40-absorption shaft top platform, 41-water outlet main pipe platform, 42-step, 43-inlet flat pressure pipe, 44-flat pressure pipe accident valve, 45-flat pressure pipe expansion joint, 46-flat pressure pipe working valve, 47-valve outlet pipe, 48-arc working gate maintenance platform, 49-accident gate, 50-annular convex body, 51-central position of the top of water discharge tunnel, 52-water cushion pond, 53-triangle rib plate, 54-rectangular cross section structure, 55-triangular force dissipating rib plates, 56-lower circular cavities, 57-the bottom of a water outlet main pipe and 58-embedded steel plates; the arrows in the figure indicate the direction of water flow.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the application herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present application and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present application will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," "coupled," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
Example 1. The energy dissipation flow control device for discharging ecological flow and gate horizontal pressure is structurally characterized in that a main discharging ecological flow pipeline device 3 and a horizontal pressure pipeline device 4 arranged at the lower part of the main discharging ecological flow pipeline device are arranged on one side of an operating chamber platform 2 of an arc-shaped working gate hoist at the top of a water discharge hole flow channel 1 as shown in figures 1-6 and 18.
The main drainage ecological flow pipeline 3 is sequentially provided with a trash device 5, a front inlet main pipe 6, an accident valve 7, a rear inlet main pipe 8, an expansion joint 9, a working valve 10, a valve outlet elbow 11 and an energy dissipation vertical pipe device 12 along the water flow direction;
the valve outlet elbow 11 passes through the rear lower part of the concrete 13, is connected with the energy dissipation vertical pipe device 12 through a flange 14 and is arranged in the absorption vertical shaft 15;
the energy dissipation standpipe device 12 consists of a flange 14, a standpipe 16, a standpipe outlet force dissipation rib plate 17, a fixed support steel ring 18, a reinforcing plate 19, a circular evenly arranged outflow pipe 20 and a flap valve 21;
the stilling shaft 15 consists of a manhole 22, an upper circular cavity, a polygonal annular convex body 24 in the middle and a conical cavity 25 in the lower part;
the manhole 22 is provided with a sealing cover plate 26;
the upper circular cavity is provided with a water outlet main pipe 27;
the main water outlet pipe 27 is symmetrically divided into two branch pipes 32 by an elbow pipe 28, a transverse straight pipe 29, a vertical pipe 30 and a three-way pipe 31 and is led to a side hole wall 34 at the upper part of a rear water discharge tunnel of an arc-shaped working gate 33;
the fixed supporting steel ring 18 of the energy dissipation vertical pipe device 12 is connected and fixed into a whole with a T-shaped frame 37 arranged on the polygonal annular convex body 24 in the middle through an I-shaped bracket 36 by bolts 38;
the polygonal annular convex body 24 in the middle adopts a trapezoid cross-section structure 39;
the top platform 40 of the stilling shaft is communicated with the operating room platform 2 of the arc-shaped working gate hoist, the rear part of the stilling shaft is provided with a main water pipe platform 41, and the top platform 40 of the stilling shaft is provided with a step 42 which is connected with the main water pipe platform 41;
the horizontal pressure filling pipeline device 4 consists of an inlet flat pressure pipe 43, a flat pressure pipe accident valve 44, a flat pressure pipe expansion joint 45, a flat pressure pipe working valve 46 and a valve outlet pipe 47;
the inlet flat pressure pipe 43 is arranged at the lower part of the inlet rear main pipe 8;
the flat-pressing pipe accident valve 44, the flat-pressing pipe expansion joint 45 and the flat-pressing pipe working valve 46 are arranged on the arc-shaped working gate maintenance platform 48;
the valve outlet pipe 47 is symmetrically divided into two branch pipes 32 by the bent pipe 28, the transverse straight pipe 29, the vertical pipe 30 and the three-way pipe 31 to be led to the side hole wall 34 at the upper part of the water discharge tunnel between the accident gate 49 and the arc-shaped working gate 33;
the bottom 57 of the main water pipe of the absorption shaft 15 is higher than the top of the outflow pipe 20 of the energy absorption standpipe device 12, and the energy absorption standpipe device 12 is in a submerged outflow state.
The T-shaped frame 37 is welded and fixed with a pre-buried steel plate 58 arranged on the outer side of the polygonal annular convex body 24 in the middle.
Example 2. An energy dissipation and flow control device for discharging ecological flow and gate horizontal pressure is shown in figures 7-12 and 18. The structure of this embodiment is similar to that of embodiment 1, except that:
the two sides of the arc-shaped working gate hoist operating chamber platform 2 at the top of the water drain hole flow channel 1 are symmetrically provided with a main pipeline device 3 for discharging ecological flow and a horizontal pressure filling pipeline device 4 arranged at the lower part of the main pipeline device;
the relief vertical shaft 15 consists of a manhole 22, an upper circular cavity, a middle circular convex body 50 and a lower conical cavity 25;
the T-shaped frame 37 is welded and fixed with an embedded steel plate 58 arranged on the outer side of the annular convex body 50 in the middle;
the fixed supporting steel ring 18 of the energy dissipation vertical pipe device 12 is connected and fixed into a whole with a T-shaped frame 37 arranged on a circular convex body 50 at the middle part through an I-shaped bracket 36 by bolts 38;
the main water outlet pipe 27 is led to the side hole wall 34 at the upper part of the rear water discharge tunnel of the arc-shaped working gate 33 through the bent pipe 28, the transverse straight pipe 29 and the vertical pipe 30.
Example 3. An energy dissipation and flow control device for discharging ecological flow and gate horizontal pressure is shown in fig. 13, 3-6, 14 and 18. The structure of this embodiment is similar to that of embodiment 2, except that:
a main pipeline device 3 for discharging ecological flow and a horizontal pressure filling pipeline device 4 arranged at the lower part of the main pipeline device are symmetrically arranged at one side of an operating chamber platform 2 of the arc-shaped working gate hoist at the top of the water discharge hole flow channel 1;
the stilling shaft 15 consists of a manhole 22, an upper circular cavity, a polygonal annular convex body 24 in the middle and a conical cavity 25 in the lower; the polygonal annular convex body 24 in the middle adopts a trapezoid cross-section structure 39; the fixed supporting steel ring 18 of the energy dissipation vertical pipe device 12 is connected and fixed into a whole with a T-shaped frame 37 arranged on the polygonal annular convex body 24 in the middle through an I-shaped bracket 36 by bolts 38;
the main water outlet pipe 27 is led to a central position 51 at the top of a water discharge tunnel at the rear part of the arc-shaped working gate 33 through the bent pipe 28, the transverse straight pipe 29, the vertical pipe 30 and the three-way pipe 31, and a plunge pool 52 is arranged right below a water outlet of the main water outlet pipe 27.
Example 4. An energy dissipation and flow control device for discharging ecological flow and gate horizontal pressure is shown in figures 14-17, 3, 4 and 19. The structure of this embodiment is similar to that of embodiment 3, except that: the stilling shaft 15 consists of a manhole 22, an upper circular cavity, two polygonal annular convex bodies 24 in the middle and a conical cavity 25 in the lower;
the rectangular cross-section scheme (I) of the application, which is provided with triangular rib plates, is further described in detail below with reference to figures 1, 7, 13, 18 and 20.
The stilling shaft 15 consists of a manhole 22, an upper circular cavity, a polygonal annular convex body 24 in the middle and a conical cavity 25 in the lower part; the manhole 22 is provided with a sealing cover plate 26; the upper circular cavity is provided with a water outlet main pipe 27; the polygonal annular convex body 24 in the middle adopts a rectangular section structure 54 provided with triangular rib plates 53.
The rectangular section scheme (II) of the triangular rib plate is adopted in the stilling shaft according to the application and is further described in detail below with reference to fig. 1, 7, 13, 18 and 21.
The stilling shaft 15 consists of a manhole 22, an upper circular cavity, a polygonal annular convex body 24 in the middle part and a lower circular cavity 56 in which triangular stilling rib plates 55 are annularly arranged; the manhole 22 is provided with a sealing cover plate 26; the upper circular cavity is provided with a water outlet main pipe 27; the polygonal annular convex body 24 in the middle adopts a rectangular section structure 54 provided with triangular rib plates 53.
The rectangular cross-section scheme (III) of the application, which is provided with triangular rib plates, is further described in detail below with reference to figures 15, 19 and 22.
The stilling shaft 15 consists of a manhole 22, an upper circular cavity, two polygonal annular convex bodies 24 in the middle and a conical cavity 25 in the lower; the manhole 22 is provided with a sealing cover plate 26; the upper circular cavity is provided with a water outlet main pipe 27; the polygonal annular convex body 24 in the middle adopts a rectangular section structure 54 provided with triangular rib plates 53.
The rectangular cross-section scheme (IV) of the application, which is provided with triangular rib plates, is further described in detail below with reference to figures 15, 19 and 23.
The stilling shaft 15 consists of a manhole 22, an upper circular cavity, two polygonal annular convex bodies 24 in the middle and a lower circular cavity 56 in which triangular stilling rib plates 55 are annularly arranged; the manhole 22 is provided with a sealing cover plate 26; the upper circular cavity is provided with a water outlet main pipe 27; the polygonal annular convex body 24 in the middle adopts a rectangular section structure 54 provided with triangular rib plates 53.
By adopting the technology, the arc-shaped working gate hoist operating chamber platform 2 on one side or two sides of the top of the drain hole runner 1 is fully utilized in the dam hydroelectric engineering, the drainage ecological flow main pipeline device 3 and the horizontal filling pipeline device 4 arranged at the lower part of the drainage ecological flow main pipeline device are arranged on the arc-shaped working gate hoist operating chamber platform, and the corresponding drain valve control flow is arranged on each pipeline, so that the two-purpose requirements of drainage ecological flow and gate horizontal filling pressure are met. The water draining pipeline of the ecological draining device is led to the side hole wall 34 at the upper part of the back draining tunnel of the arc-shaped working gate after being subjected to energy dissipation through the energy dissipation vertical pipe device 12 and the energy dissipation vertical shaft 15 to perform outlet water flow clash energy dissipation or the water cushion pond 52 energy dissipation of outlet water flow is performed at the middle position 51 at the top of the back draining tunnel of the arc-shaped working gate, so that the ecological draining device is used for draining the ecological flow under the condition that a special ecological draining tunnel is not arranged, the investment is saved, constant and accurate flow can be drained according to the requirements of a power station, the water energy waste caused by excessive flow can be avoided, the motor power of the water draining valve is low, the energy consumption of the relative gate is low, the electric energy waste can not be caused, and the national energy saving and emission reduction requirements are met; in addition, when the ecological flow is released, the flow speed of the lower water release body is greatly reduced after the energy dissipation effect is carried out for a plurality of times, the impact effect on the water release hole flow channel 1 is smaller, and the safety of the water release hole flow channel 1 is ensured. The deep hole accident gate of the water drainage system adopts the horizontal pressure filling pipeline device 4 to carry out horizontal pressure and is arranged at the rear part of the accident valve 7 of the main ecological flow discharging pipeline device 3, the gate adopts the horizontal pressure filling valve to carry out horizontal pressure filling, a horizontal pressure filling valve is not required to be arranged on the gate, the difficulty of operating the gate water filling valve under water of opening and closing equipment is avoided, and the reliability of the horizontal pressure filling of the gate is effectively improved; in addition, the water discharge valve can control the flow, the outlet flow speed is effectively controlled, and the outlet water flow dissipates energy through collision, so that the flow speed of the water flow reaching the sill is reduced, and the impact damage effect of the water flow on the sill is reduced; in addition, when the accident valve of the horizontal pressure filling pipeline device 4 fails and the inlet flat pressure pipe is damaged, the accident valve 7 of the ecological flow discharging main pipeline device can be closed to cut off water flow for maintenance, and compared with the traditional method of independently arranging the horizontal pressure filling pipeline, the horizontal pressure filling pipeline device provides maintenance conditions for the accident valve and the inlet flat pressure pipe; and when the working valve 10, the telescopic joint 9 and the pipeline behind the accident valve are required to be overhauled and maintained, the water flow is intercepted by closing the flat-pressure accident valve, the normal operation of the main pipeline device 3 for discharging the ecological flow is not influenced, compared with the traditional gate, when the gate adopts the gate top water filling valve to perform flat-pressure fault, the difficulty of underwater treatment is high because the gate is positioned under water, and the overhauling efficiency and the safety are improved. The energy dissipation standpipe device 12 is provided with a damping-increasing structure through a circular evenly arranged outlet pipe 20, a flap valve 21, a force dissipation rib plate at the outlet end of the lower standpipe, and the like, so that the water flow rate at the outlet of the energy dissipation standpipe device is reduced. The energy dissipation vertical pipe device 12 is arranged in the energy dissipation vertical shaft 15, the bottom of a water outlet main pipe of the energy dissipation vertical shaft 15 is higher than the top of a water outlet pipe of the energy dissipation vertical pipe device, so that the energy dissipation vertical pipe device is in a submerged outflow state, and the flow velocity of water at the outlet of the energy dissipation vertical pipe device is reduced through the damping action of water in the energy dissipation vertical shaft on water at the outlet of the energy dissipation vertical pipe device; the middle part of the stilling shaft 15 is provided with an annular convex body 50 or a polygonal annular convex body 24, the annular convex body 50 or the polygonal annular convex body 24 adopts a trapezoid cross-section structure or a rectangular cross-section structure provided with triangular rib plates 53, the blocking effect on outlet water flow is increased by locally reducing the overflow area of the stilling shaft, and the collision energy dissipation effect of a conical cavity 25 at the lower part or a circular cavity 56 at the lower part of a triangular stilling rib plate 55 annularly arranged is reduced, so that the flow velocity of the water body of the main water outlet pipe 27 of the stilling shaft 12 is reduced. The outlet water flow is discharged to the spillway channel 1 through collision energy dissipation or energy dissipation of the plunge pool, so that the impact on the spillway channel 1 is reduced while the ecological flow discharge is met. The fixed support steel ring 18 of the energy dissipation vertical pipe device 12 is connected and fixed into a whole with the circular convex body 50 in the middle or the T-shaped frame 37 arranged on the polygonal circular convex body 24 through the I-shaped bracket 36 by adopting bolts 38, so that the stability of the energy dissipation vertical pipe device 12 is enhanced, and the vibration of the energy dissipation vertical pipe device 12 during outflow is reduced; the energy dissipation standpipe device 12 can be assembled and separated by installing and removing the connecting bolts 38 of the I-shaped bracket 36 and the T-shaped bracket 37, so that the energy dissipation standpipe device 12 is convenient to overhaul and maintain. The stilling shaft 15 is provided with a manhole 22 and a sealing cover plate 26, a stilling shaft top platform 40 is communicated with the arc-shaped working gate hoist operating chamber platform 2, a water outlet main pipe platform 41 is arranged at the rear part, and a step 42 is arranged on the stilling shaft top platform 40 and is connected with the water outlet main pipe platform 41, so that pipelines are convenient to overhaul and pedestrian safety is guaranteed. The flat-pressing pipe accident valve 44, the flat-pressing pipe expansion joint 45 and the flat-pressing pipe working valve 46 of the horizontal-pressing pipe filling device 4 are arranged on the arc-shaped working gate maintenance platform 48 in an exposed arrangement mode, so that maintenance is facilitated. The inlet of the main drainage ecological flow pipeline device 3 is provided with the trash device 5, so that damage to the valve caused by large dirt entering the pipeline is reduced, and the service life of the valve is prolonged.
The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (3)
1. The utility model provides a ecological flow and gate fill energy dissipation accuse flow device of horizontal pressure of releasing, includes water discharge hole runner (1), its characterized in that: an arc-shaped working gate headstock gear operating chamber platform (2) is arranged on one side or two symmetrical sides of the top of the water drain hole flow channel (1), a drainage ecological flow main pipeline device (3) is arranged on the arc-shaped working gate headstock gear operating chamber platform (2), and a horizontal pressure filling pipeline device (4) is arranged at the lower part of the drainage ecological flow main pipeline device (3); the main drainage ecological flow pipeline device (3) comprises a trash device (5), a front inlet main pipe (6), an accident valve (7), a rear inlet main pipe (8), an expansion joint (9), a working valve (10), a valve outlet elbow pipe (11) and an energy dissipation vertical pipe device (12) which are sequentially arranged along the water flow direction; the energy dissipation standpipe device (12) comprises a flange (14) connected with the valve outlet elbow pipe (11) and a standpipe (16) connected with the flange, a flow outlet pipe (20) is annularly and uniformly arranged on the standpipe (16), a standpipe outlet force dissipation rib plate (17) is arranged beside the flow outlet pipe (20), and the end part of a flow outlet of the flow outlet pipe (20) is connected with a flap valve (21); a reinforcing plate (19) is arranged on the energy dissipation vertical pipe device (12); the energy dissipation vertical pipe device (12) is provided with a fixed support steel ring (18); the energy dissipation vertical pipe device (12) is arranged in the absorption vertical shaft (15); the bottom (57) of the main water outlet pipe of the absorption vertical shaft (15) is higher than the top of the outflow pipe (20) of the energy absorption vertical pipe device (12); the upper part of the stilling shaft (15) is provided with a circular cavity, and the upper circular cavity is provided with a water outlet main pipe (27); the water outlet main pipe (27) is symmetrically divided into two branch pipes (32) by a group of bent pipes (28), a transverse straight pipe (29), a vertical pipe (30) and a three-way pipe (31), the two branch pipes are led to a side hole wall (34) at the upper part of a water discharge tunnel at the rear part of the arc-shaped working gate (33) or to a middle position (51) at the top of the water discharge tunnel at the rear part of the arc-shaped working gate (33), and a water cushion pond (52) is arranged under a water outlet of the water outlet main pipe (27); the middle part of the relief vertical shaft (15) is provided with a polygonal annular convex body (24) or a circular annular convex body (50); the polygonal annular convex body (24) is of a trapezoid cross-section structure (39) or a rectangular cross-section structure (54) provided with triangular rib plates (53), and the blocking effect on outlet water flow is increased by locally reducing the overflow area of the stilling shaft (15); the lower part of the stilling shaft (15) is provided with a conical cavity (25) or a lower circular cavity (56) with triangular stilling rib plates (55) annularly arranged; the fixed support steel ring (18) is connected and fixed with a polygonal annular convex body (24) in the middle or a T-shaped frame (37) arranged on the annular convex body (50) into a whole through an I-shaped bracket (36) by bolts (38); the T-shaped frame (37) is welded and fixed with a built-in steel plate (58) arranged on the outer side of the polygonal annular convex body (24) or the circular annular convex body (50) in the middle.
2. The energy dissipation and flow control device for discharging ecological flow and gate filling level pressure according to claim 1, wherein the energy dissipation and flow control device is characterized in that: and a manhole (22) is arranged above the upper circular cavity, and the manhole (22) is provided with a sealing cover plate (26).
3. The energy dissipation and flow control device for discharging ecological flow and gate filling level pressure according to claim 1, wherein the energy dissipation and flow control device is characterized in that: the water filling flat-pressure pipeline device (4) comprises an inlet flat-pressure pipe (43) arranged on an arc-shaped working gate maintenance platform (48), and a flat-pressure pipe accident valve (44), a flat-pressure pipe expansion joint (45), a flat-pressure pipe working valve (46) and a valve outlet pipe (47) are sequentially arranged on the inlet flat-pressure pipe (43) in the outflow direction; the inlet flat pressing pipe (43) is arranged at the lower part of the inlet rear main pipe (8); the valve outlet pipe (47) is symmetrically divided into two branch pipes (32) through a group of bent pipes (28), a transverse straight pipe (29), a vertical pipe (30) and a three-way pipe (31) on one side or is symmetrically led to a side hole wall (34) on the upper part of a water discharge tunnel between an accident gate (49) and an arc-shaped working gate (33) through a group of bent pipes (28) and a vertical pipe (30) on two sides.
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| CN202111668410.XA CN114182699B (en) | 2021-12-31 | 2021-12-31 | Energy dissipation flow control device for discharging ecological flow and gate horizontal pressure |
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| CN202111668410.XA CN114182699B (en) | 2021-12-31 | 2021-12-31 | Energy dissipation flow control device for discharging ecological flow and gate horizontal pressure |
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| CN111455944A (en) * | 2020-05-13 | 2020-07-28 | 中国电建集团贵阳勘测设计研究院有限公司 | Opposite-flushing type flood discharge energy dissipation structure and method |
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| JP2007177395A (en) * | 2005-12-26 | 2007-07-12 | Chugoku Electric Power Co Inc:The | Energy dissipation works of spillway water flow and energy dissipation method |
| CN101886377A (en) * | 2010-07-19 | 2010-11-17 | 四川大学 | Step swirling flow vertical shaft |
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