CN114075823A

CN114075823A - Water retaining gate

Info

Publication number: CN114075823A
Application number: CN202010796512.9A
Authority: CN
Inventors: 宋熙诚
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-10
Filing date: 2020-08-10
Publication date: 2022-02-22

Abstract

The application provides a water retaining gate, it includes: a plurality of louver units arranged in a stack, the louver units comprising: supporting frame, shutter door through pivot and bearing with supporting frame realizes rotatable connection, shutter door with pivot eccentric settings to make under water and under the effect of gravity can self-closing, moment of torsion transmission device with shutter door fixed connection, flotation pontoon, the flotation pontoon have the moment of torsion spout, with flotation pontoon fixed connection's two at least flotation pontoon guide wheels, its and outside guide rail connection, thereby restriction flotation pontoon moving direction, the flotation pontoon can be along under the buoyancy of water and the action of gravity of itself guide rail removes, makes moment of torsion transmission device with the moment of torsion spout contact produces the moment of torsion, and with the moment of torsion transmission give the shutter door, makes the shutter door open. Thereby realizing unpowered automatic surface water taking and power generation.

Description

Water retaining gate

Technical Field

The invention relates to the field of hydroelectric power generation, in particular to a hydraulic metal structure device, namely a water retaining gate.

Background

At present, in a hydropower station adopting a down-the-hole water intake, power generation water flow passes through a trash rack and is guided from the bottom of the stored water. For a high dam reservoir, the water temperature structure of the reservoir is a stable layered type, and the water temperature layering phenomenon occurs after water storage. The water temperature of the lower discharge water is obviously different from the water temperature of the natural river on the section of the dam site, so as to lead the engineering of the Altash hydro-junction in Xinjiang to be usedFor example, the total storage capacity of the reservoir is 22.45 hundred million m³The maximum dam height is 164.8m, and the annual average runoff of the dam site section is 64.17 hundred million m³The main changes are: the water temperature of the discharged water of the reservoir is lower than the water temperature of the river within 3-8 months, the maximum lowering amplitude of the low-temperature water is 10.4 ℃, and the water temperature is within 5 months; the water temperature discharged from the reservoir is higher than that of the river in 8 months to 2 months in the next year, the maximum amplitude of the high-temperature water is 5.5 ℃, and the water temperature appears in 12 months.

The low-temperature underwater water discharge of the reservoir has great adverse effect on ecology, and in order to protect the downstream ecology and slow down the influence of the low-temperature water discharged downwards on aquatic ecology and irrigation agriculture, the power generation diversion is required to take water from the surface layer in environmental protection, so that different water taking modes are adopted, and the scheme of single-layer water taking, two-layer water taking, three-layer water taking, beam folding door water taking and the like is adopted according to different water intake conditions and reservoir operation data in the open water.

The water taking scheme of the surface layer stoplog door most meets the requirement of surface layer water taking, namely, a stoplog type water retaining gate is arranged at the rear part of the through-height type trash rack, the top of the stoplog type water retaining gate is positioned at a position meeting the overflow requirement of power generation water taking, and stoplogs are taken and placed section by section according to the water level change of a reservoir. However, due to the limitation of transportation and manufacturing installation conditions of the stop log door, the height of each stop log cannot be too small, usually about 3m of stop log is taken, the requirement that the water taking depth exceeds the reference flow after the whole bottom stop log is lifted still exists, the operation frequency is high, and the manual workload is large.

Disclosure of Invention

The application provides a water retaining gate, specifically is water drive hinge formula water retaining gate, and it is high to have solved the electricity generation intake and adopted operating frequency behind the water retaining gate, and manual work volume is big, can not independently adapt to the problem of water level change. The present application includes the following embodiments:

embodiment 1 is a water gate including: at least one (e.g., at least two, e.g., at least three) louver unit arranged in a stack, the louver unit comprising: supporting frame, at least one shutter door, the shutter door through pivot and bearing with supporting frame realizes rotatable coupling, the shutter door with pivot eccentric settings to make under water and under the effect of gravity can self-closing, torque transmission device with shutter door fixed connection, flotation pontoon, the flotation pontoon have the moment of torsion spout, with flotation pontoon fixed connection's two at least flotation pontoon guide wheels, its and outside guide rail connection, thereby restriction flotation pontoon moving direction, the flotation pontoon can be along under the buoyancy of water and the action of gravity of itself guide rail removes, makes torque transmission device with the moment of torsion spout contact produces the moment of torsion, and with the moment of torsion transmission give the shutter door, makes the shutter door open.

Embodiment 2 is the floodgate of embodiment 1, wherein the torque transmission device is a crank arm device, and includes a first crank arm, a first crank arm guide wheel connected to the first crank arm, a second crank arm, and a second crank arm guide wheel connected to the second crank arm, and the first crank arm and the second crank arm form an angle, and the angle is greater than or equal to 30 ° and less than or equal to 150 °, for example, between 45 ° and 135 °, for example, between 80 ° and 100 °.

Embodiment 3 of the floodgate according to embodiment 1, wherein the torque transmission device is fixedly connected to the shaft or integrally formed with the shaft, so as to be fixedly connected to the louver door.

Embodiment 4 is the floodgate of embodiment 1, wherein the height of the torque chute is equal to or greater than the height of 2 louver doors, so that a plurality of louver doors can be opened simultaneously.

Embodiment 5 of the floodgate according to embodiment 1, wherein the buoyancy tank is a sealed tank structure, and a sealing chamber and a ballast chamber are provided from top to bottom.

Embodiment 6 the floodgate of embodiment 1, wherein the louver unit comprises at least 2, such as at least 3, such as at least 4 louver doors.

Embodiment 7 of the floodgate according to embodiment 1, wherein the support frame is composed of a top beam, a bottom beam, and an edge beam, and the support frame is stacked in the gate groove.

Embodiment 8 of the floodgate according to embodiment 7, further comprising a support rail disposed in the gate groove, wherein the support frame is in contact with the support rail through the edge beam, thereby transferring a load transferred from the louver door to the support rail.

Embodiment 9 the floodgate according to embodiment 7, wherein the guide rail is installed in the gate groove.

Embodiment 10, a power generation inlet of a high dam, comprising the water gate of any one of embodiments 1 to 9.

The technical scheme of this application, through eccentric settings's shutter door and pivot, makes the shutter door keep closing, when the flotation tank along during the guide rail removes, the moment of torsion spout contact through setting up on fixed connection's the moment of torsion transmission device on the shutter door and the flotation tank produces the moment of torsion, and transmits the moment of torsion for the shutter door makes the shutter door open to realize unpowered automatic top layer water intaking electricity generation.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings of the embodiments will be briefly introduced below, and it is apparent that the drawings in the following description relate only to some embodiments of the present disclosure and are not limiting to the present disclosure.

Fig. 1 shows a louver unit structure of embodiment 1;

FIG. 2 shows a connection structure of the blind door and the torque transmission device in embodiment 1;

FIG. 3 is a schematic sectional view of the louver door and the rotating shaft in the embodiment 1;

FIG. 4 shows the structure of the torque transmitting device in embodiment 1;

FIG. 5 is a plan view showing a water gate in embodiment 1;

FIG. 6 is a schematic diagram of the working cycle of a single louver door in the embodiment 1 when the buoyancy tank sinks;

FIG. 7 is a schematic diagram of the working cycle of the single louver door in the embodiment 1 when the buoyancy tank floats;

fig. 8 shows a schematic view of the water retaining gate arranged at the water inlet of the high dam reservoir in embodiment 1.

Reference numerals: 100-louver units, 110-supporting frames, 111-top beams, 112-bottom beams, 113-edge beams, 120-louver doors, 130-rotating shafts, 140-bearings, 150-torque transmission devices, 151-first crank arms, 152-first crank arm guide wheels, 153-second crank arms, 154-second crank arm guide wheels, 200-floating boxes, 210-torque chutes, 220-floating box guide wheels, 300-guide rails, 400-supporting rails, 500-gate way concrete (gate shaft concrete), and 600-trash racks.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be described clearly and completely with reference to the drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

The application discloses water retaining gate, it includes: at least one louver unit in a stacked arrangement, the louver unit comprising: the supporting frame, at least one shutter door, the shutter door through pivot and bearing with the supporting frame realizes rotatable coupling, the shutter door with thereby the pivot eccentric settings makes under water and under the effect of gravity can self-closing, moment of torsion transmission device with shutter door fixed connection, flotation pontoon, the flotation pontoon have the moment of torsion spout, with flotation pontoon fixed connection's two at least flotation pontoon guide pulleys, its and outside guide rail connection to restriction flotation pontoon moving direction, the flotation pontoon can be along under the buoyancy of water and the action of gravity of itself guide rail removes, makes moment of torsion transmission device with the moment of torsion spout contact produces the moment of torsion, and with the moment of torsion transmission for the shutter door, makes the shutter door open.

In this application, the eccentric arrangement refers to the unbalanced torque on both sides of the rotating shaft, which can be achieved by setting the weights on both sides of the rotating shaft to be different, for example, the rotating shaft is not arranged in the middle under the condition that the density of the shutters is the same, or a weight is added in the shutters on one side of the rotating shaft. The size of the louvered door is not particularly limited, and those skilled in the art can design the louvered door according to the needs, for example, the length is 1 to 6 meters, for example, the length is 2 to 5 meters, for example, the length is 3 to 4 meters, for example, the length is 3.2 to 3.8 meters, for example, the height is 0.3 to 2 meters, for example, the height is 0.5 to 1.5 meters, for example, the height is 0.7 to 1.2 meters, for example, the height is 0.9 to 1 meter, the louvered door can be provided in a hollow shape, the rotating shaft can be provided through the louvered door, or can be respectively provided at both end portions, so that the louvered door rotates around the rotating shaft in the supporting frame structure. Through the eccentric arrangement of shutter door and pivot, no matter be under water or on water, the shutter door can both keep self-closing state. This can be designed as desired by the person skilled in the art.

In this application, the flotation tank suspends in the box of top water for relying on buoyancy and self gravity, and its effect utilizes the ballast, provides the rotatory drive power of shutter door. When the water level changes, the floating box moves along the guide rail, through the stacking arrangement of the louver units, torque is generated at the contact position of the torque transmission device and the torque sliding groove, so that the louver door is opened, and the louver door is kept in a closed state at the non-contact position outside the torque transmission device and the torque sliding groove, so that automatic surface water taking and power generation are realized.

In the present application, the manner of generating the torque by "contacting" the torque transmission device with the torque chute is not particularly limited, as long as the torque transmission device is applied with the torque for keeping the louver door in the open state by generating the interaction force on the contact surface between the torque transmission device and the torque chute. For example, during upward movement of the pontoon, the torque chute generates an upward rotating torque to the torque transfer device, which transfers the torque to the louvered door, which in turn remains open. During the downward movement of the buoyancy tank, the torque chute generates a downward rotating torque to the torque transfer device, which transfers the torque to the louvre door, which in turn remains open in the opposite direction. And a transition section is arranged at the upper part or the lower part of the first sliding chute, the transition section is contacted with the torque transmission device and enables the torque transmission device to rotate along with the movement of the buoyancy tank, the rotating angle of the torque transmission device is further increased along with the continuous movement of the buoyancy tank, and the torque transmission device is separated from the transition section, enters the torque sliding chute and slides in the torque sliding chute under the state of maintaining the opening of the louver door. For example, the transition section is configured as a slope-shaped sliding chute, and the torque sliding chute is a vertical sliding chute, as the floating box moves, the torque transmission device first contacts with the slope-shaped sliding chute, the slope-shaped sliding chute can provide a component force in a tangential direction of a rotation arc line to the torque transmission device, as the floating box further moves, the louver door is driven to rotate, when the louver door is completely opened, the torque transmission device enters the vertical sliding chute, namely the torque sliding chute, and slides in the torque sliding chute in a state of maintaining the opening of the louver door. The arrangement of the transition section is designed by the skilled person according to the needs.

The specific structure of the torque transmitting devices is not limited herein, and those skilled in the art can design various forms of the torque transmitting devices autonomously in light of the disclosure herein. In some embodiments, the torque transmission device is a crank arm device, and includes a first crank arm, a first crank arm guide wheel connected to the first crank arm, a second crank arm, and a second crank arm guide wheel connected to the second crank arm, the crank arm device is configured to generate torque when the buoyancy tank moves in different directions, for example, when the buoyancy tank moves downwards along the guide track, the first crank arm contacts the torque chute through the first crank arm guide wheel to generate downward torque, and the louver door remains open; when the floating box moves upwards along the guide track, the second crank arm is in contact with the torque sliding groove through the second crank arm guide wheel to generate an upward torque, and the louver door is kept open. Under the arrangement, when the water level rises or falls, the floating box can drive the louver door to rotate and open, and after the floating box passes by, the louver door is naturally closed. The first crank arm and the second crank arm form an angle which is greater than or equal to 30 degrees and less than or equal to 150 degrees, such as between 45 degrees and 135 degrees, such as between 80 degrees and 100 degrees, so that when the buoyancy tank moves along different directions, the first crank arm and the second crank arm can be in contact with the sliding chute and have enough moment, and the louver door is driven to generate enough deflection angle, such as 60 degrees to 120 degrees, such as 80 degrees to 100 degrees, such as 90 degrees. In some embodiments, the first and second arms form an angle with the louvre door, the angle formed between the first arm and the louvre door is referred to as a first arm angle, and the angle formed between the second arm and the louvre door is referred to as a second arm angle, and the first and second arm angles are each independently at least 30 degrees and less than or equal to 90 degrees, such as at least 40 degrees and less than or equal to 80 degrees, such as at least 40 degrees and less than or equal to 60 degrees, such as at least 45 degrees.

In some embodiments, the torque transmission device is fixedly connected with or integrally formed with the rotating shaft, so as to be fixedly connected with the louver door, and can well transmit torque for driving the louver door structure.

In some embodiments, the height (i.e., length) of the torque chute is greater than or equal to the height of 2 louvres, thereby enabling simultaneous opening of multiple louvres. The shutter door quantity of opening has been decided to the height of moment of torsion spout, and the shutter door quantity of opening below being in the surface of water has decided the water intaking degree of depth, and the technical personnel in the field can confirm the shutter door and open quantity according to the drainage demand that generates electricity to the corresponding height that sets up the moment of torsion spout conveniently mediates automatic water yield.

In some embodiments, the buoyancy tank is a sealed tank structure, and a sealing chamber and a weight chamber are arranged from top to bottom. The function of the louver door is to provide the driving force for the deflection of the louver door by utilizing buoyancy and weight.

In some embodiments, the louvre unit comprises at least 2, such as at least 3, such as at least 4 louvres.

In some embodiments, the support frame is comprised of a top beam, a bottom beam, and an edge beam, the support frame being stacked in the door slot. The supporting frame is usually a frame-shaped structure, a top beam and a bottom beam are transversely arranged, two boundary beams are arranged on two vertical sides, and the two boundary beams are all channel steel sections. The edge beam stress structure is in a simple beam form with concentrated load transmitted from the louver door at multiple points, and the section of the edge beam stress structure meets the strengthStiffness and stability requirements; the top beam and the bottom beam play the role of connecting and fixing the side beams, and the cross section of the side beams is reduced as much as possible due to the cross of the orifice. The upper end of the boundary beam can be provided with a lifting hole suitable for the grabbing beam to grab. To prevent lateral movement of the support frame, stop plates are provided on the edge beams. Height H of side beam_b＝n×h_B+B_d+B_b+C₀Wherein n is the number of the louver doors in a single frame; h is_BIs the height of a single louver door; b is_dThe width of the flange of the bottom beam; b is_bThe width of the top beam flange; c₀For considering the heightening of the rear edge beam of the lifting hole.

In some embodiments, the floodgate further comprises a support rail disposed in the gate groove, and the support frame is in contact with the support rail through the edge beam, thereby transferring a load transferred from the blind door to the support rail.

In some embodiments, the guide track is mounted in a door slot. The guide rail is embedded in the gate slot concrete, and the floating box guide wheel installed on the floating box is limited to limit the floating box to float up and down along with the water level without sidesway or overturn. Meanwhile, the displacement of the shutter frame is limited, and the horizontal load of the shutter frame is transferred to the gate shaft concrete.

On the other hand, the application discloses a power generation water inlet of a high dam, which comprises the water retaining gate in any one of the above embodiments.

The ranges described above may be used alone or in combination. The present application can be more easily understood by the following examples.

Examples

Example 1

The present embodiment provides a floodgate including a louver unit 100 and a buoyancy tank 200 stacked.

As shown in fig. 1, the louver unit 100 includes a support frame 110, and four louver doors 120, wherein the support frame 110 includes a top beam 111, a bottom beam 112, and an edge beam 113.

As shown in fig. 2, the louver door 120 is rotatably connected to the supporting frame 110 by a rotating shaft 130 and a bearing 140, and the rotating shaft 130 is further fixedly connected to a torque transmission device 150.

Fig. 3 shows a schematic cross-sectional view of a louver door and a rotating shaft, wherein the louver door 120 is a welded structure, the cross section of the louver door is in a long round hole shape, reinforcing ribs are arranged at two ends of the louver door 120, the rotating shaft 130 is arranged at the geometric center of the louver door 120, and an eccentric arrangement is realized by arranging a heavy object at one end of the louver door 120, so that the louver door can be automatically closed underwater and above the water surface.

Fig. 4 shows a structure of the torque transmission device 150, wherein the torque transmission device 150 is a crank arm device and comprises a first crank arm 151, a first crank arm guide wheel 152 connected with the first crank arm 151, a second crank arm 153, and a second crank arm guide wheel 154 connected with the second crank arm 153, and a 90-degree included angle is formed between the first crank arm 151 and the second crank arm 153.

As shown in fig. 5, the buoyancy tank 200 is a welded sealed tank structure, the section of which is rectangular, the tank is divided into a sealing chamber and a ballast chamber (not shown) from top to bottom, the tank is connected with a guide rail 300 through two buoyancy tank guide wheels 220 fixedly connected, and the guide rail 300 is embedded in the gate groove concrete 500, so that the buoyancy tank 200 moves along the guide rail 300 along with the water level elevation without lateral movement or overturning. The side of the buoyancy tank 200 is provided with a torque chute 210, but when the buoyancy tank 200 moves along the guide track 300, the torque transmission device 150 contacts the torque chute 210 to generate a torque, and transmits the torque to the shutter door 120, so that the shutter door 120 is kept open. The torque may be an upward torque generated when the float 200 moves upward along the guide rail 300, or a downward torque generated when the float 200 moves downward along the guide rail 300. The support rail 400 is further embedded in the gate slot concrete 500, and the load transmitted from the louver door 120 is transmitted to the support rail 400 through the edge beam.

The principle of the working cycle of the single louver door 120 when the floating box 200 sinks is shown in fig. 6, when the water level drops, the floating box 200 sinks along with the water level, the torque chute applies torque to the first crank arm to keep the louver door open, and the louver door with the upper part separated from the torque chute deflects to a closed state under the action of self weight.

The principle of the working cycle of the single louver door 120 floating on the floating box 200 is shown in fig. 7, when the water level rises, the floating box 200 floats upwards along with the water level, the torque chute applies torque to the second crank arm to enable the louver door to be opened in the opposite direction, the lower portion of the louver door is separated from the torque chute, and the louver door deflects to a closed state under the combined action of self weight and buoyancy.

As shown in fig. 8, the water gate is generally disposed downstream of the power generation water inlet trash rack 600, and the sectional louver units are once put into the gate slots and submerged, and the louver doors 120 provided in the frame are automatically turned to a closed state by the combined action of buoyancy and self-weight. The distance between the grid groove of the trash rack 600 and the door groove of the louver door 120 is required to ensure that the louver door 120 does not interfere with the trash rack 600 when being opened fully. The height of the buoyancy tank chute determines the opening number of the louvered doors 120, and the opening number of the louvered doors 120 is determined according to the water diversion flow rate, so that the length of the buoyancy tank chute is determined. In consideration of the inspection conditions of the louvres 120 and the trash rack 600, a sufficient inspection groove should be reserved at a proper position, and a lifting device for lifting the trash rack 600 and the louvres 120 should be considered.

When the floating box is put into water along the door slot, the floating box sinks under the action of self weight and weight, and meanwhile, the floating box sliding slot drives the swing arm to rotate, so that the louver doors are opened in sequence; when the buoyancy tank sinks to a certain depth, the buoyancy of the buoyancy tank is larger than the sum of the dead weight and the weight, the buoyancy tank can hover, at the moment, the louver doors in the height range of the sliding groove of the buoyancy tank are both in an open state, other louver doors are in a closed state, and water flows in through the open louver doors.

The technical scheme of the invention has the following effects: in the electricity generation water inlet in high dam big storehouse, can realize getting the top layer water electricity generation automatically, it is high to solve the operating frequency behind the adoption manger plate floodgate among the prior art, and manual work volume is big, problem that can not automize.

The above description is intended to be exemplary of the present disclosure, and not to limit the scope of the present disclosure, which is defined by the claims appended hereto.

Claims

1. A water gate, comprising:

at least one (e.g., at least two) louver unit arranged in a stack, the louver unit comprising:

a support frame;

at least one louver door rotatably connected to the support frame by a rotating shaft and a bearing, the louver door being eccentrically disposed with respect to the rotating shaft so as to be automatically closed under the influence of water and gravity;

the torque transmission device is fixedly connected with the louver door;

a buoyancy tank having a torque chute; and

at least two buoyancy tank guide wheels fixedly connected with the buoyancy tank, and connected with an external guide rail so as to limit the movement direction of the buoyancy tank,

the buoyancy tank can move along the guide track under the action of buoyancy of water and gravity of the buoyancy tank, so that the torque transmission device is in contact with the torque sliding groove to generate torque, and the torque is transmitted to the louver door to open the louver door.

2. The floodgate of claim 1, wherein the torque transmitting device is a crank arm device comprising a first crank arm, a first crank arm runner connected to the first crank arm, a second crank arm, and a second crank arm runner connected to the second crank arm, wherein the first crank arm and the second crank arm form an angle, the angle being greater than or equal to 30 ° and less than or equal to 150 °, such as between 45 ° and 135 °, such as between 80 ° and 100 °.

3. The floodgate of claim 1, wherein the torque transmission device is fixedly connected or integrally formed with the shaft, thereby fixedly connecting with the shutter door.

4. The water gate of claim 1, wherein the height of the torque chute is equal to or greater than the height of 2 louvres, thereby enabling simultaneous opening of a plurality of louvres.

5. The floodgate of claim 1, wherein the buoyancy tank is a sealed tank structure provided with a sealing chamber and a ballast chamber from top to bottom.

6. Water gate according to claim 1, wherein the shutter unit comprises at least 2, such as at least 3, such as at least 4 shutter doors.

7. The water gate of claim 1, wherein the support frame is comprised of a top beam, a bottom beam, and an edge beam, the support frame being stacked in the gate slot.

8. The floodgate of claim 7, further comprising a support rail disposed in the gate channel, wherein the support frame is in contact with the support rail through the edge beam, thereby transferring a load from the louvered gate to the support rail.

9. The water gate of claim 7, wherein the guide track is mounted in a gate slot.

10. A power generating water intake for a high dam comprising a water gate as claimed in any one of claims 1 to 9.