Noise reduction rubber dam

Abstract

The noise reduction rubber dam comprises a bottom plate arranged in a riverway in a crossing mode, a rubber dam body for sealing the riverway is arranged on the bottom plate and divides the riverway into an upstream area and a downstream area, and a drainage channel penetrating through the bottom plate is formed in the bottom plate in the direction of the riverway. A turnover adjusting plate is arranged on the inner top wall of the drainage channel, and an adjusting air bag is arranged between the adjusting plate and the inner top wall of the drainage channel. The drainage channel is formed in the bottom plate, water in the upstream area is drained through the drainage channel, the water level difference between the upstream area and the downstream area is effectively reduced, and water sound generated by water flowing into the downstream area is greatly reduced; and the turnover adjusting plate and the adjusting air bag are arranged, effective control over the water flow is achieved, river channel blockage is prevented, the opening degree of the drainage channel can be adjusted by adjusting inflation and deflation of the air bag, and therefore the water flow speed is slowed down to a certain degree, and the decibel of water flow sound is further reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy engineering, and in particular relates to a noise-reducing rubber dam. Background Art

[0002] In urban rivers, dams are often built to raise the water level upstream of the river and improve the landscape effect on both sides of the river. Rubber dams are an economical and simple water retaining type, which are widely used in urban rivers. Rubber dams, also known as rubber sluices, are made of high-strength synthetic fiber fabrics as a load-bearing skeleton, coated with rubber as a protective layer inside and outside, processed into rubber tape, and then anchored on the bottom plate to form a closed dam bag. It is inflated with water (air) through the filling and discharge pipeline to form a bag-type water retaining dam. The dam top can overflow, and the dam height can be adjusted as needed to control the upstream water level to achieve benefits such as irrigation, power generation, and tide prevention.

[0003] Since the rubber dam adopts the overflow method at the dam top, there is a large difference in water levels upstream and downstream. When the water flows through the rubber dam, the noise at the dam bottom is relatively loud due to the large height difference between the dam top and the dam bottom. In addition, due to the tight land use in the urban area, the residential area is adjacent to the rubber dam and is greatly affected by the water sound of the rubber dam. Especially in the silent night, the thunderous sound of water has greatly affected the sleep and quality of life of the residents in the community. Summary of the invention

[0004] The purpose of the present invention is to provide a noise-reducing rubber dam to address the problems existing in the prior art, and to reduce the water flow noise generated by river water passing through the dam body by reducing the water flow drop.

[0005] To achieve the above-mentioned purpose, the invention adopts the following technical scheme: a noise-reducing rubber dam, comprising a bottom plate arranged across a river channel, a rubber dam body closing the river channel is provided on the bottom plate, the rubber dam body divides the river channel into an upstream area and a downstream area, a drainage channel penetrating the bottom plate is opened in the bottom plate along the direction of the river channel, a reversible adjustment plate is provided on the inner top wall of the drainage channel, an adjustment air bag is provided between the adjustment plate and the inner top wall of the drainage channel, and an air supply component providing an air source to the adjustment air bag and the rubber dam body is provided in the bottom plate.

[0006] The above technical solution, by opening a drainage channel in the bottom plate, allows the water in the upstream area to be drained through the drainage channel instead of the overflow method of the dam top, effectively reducing the water level difference between the upstream and downstream, so that the water noise generated by the water flowing into the downstream area is greatly reduced; and a reversible adjustment plate and an adjustment airbag are set to achieve effective control of the water flow. This design not only helps to prevent the river channel from being blocked, but also can adjust the degree of opening of the drainage channel by adjusting the inflation and deflation of the airbag, thereby slowing down the water flow speed to a certain extent, further reducing the decibel of the water flow noise, and thus reducing the impact of the water flow noise on the lives of residents around the dam body.

[0007] As a further technical solution, the length of the bottom plate is greater than the inner width of the river channel, and the two ends of the bottom plate are respectively inserted into the interior of the two sides of the river channel, and sinking grooves adapted to the two ends of the bottom plate are opened on both sides of the river channel, and equipment cavities are opened at both ends of the bottom plate. A drainage outlet connected to the equipment cavity is opened on the side of the bottom plate close to the downstream area.

[0008] The above technical solution enhances the stability of the bottom plate by designing that the bottom plate is longer than the inner width of the river channel and the two ends are inserted into the inner sides of the river channel. At the same time, the design of the equipment cavity and the drain port facilitates the placement of the air supply component and the discharge of the accumulated water that accidentally enters the sinking tank, which helps to maintain the normal operation of the rubber dam.

[0009] As a further technical solution, a drag reduction plate is provided on the side of the bottom plate facing the upstream area. The drag reduction plate is a triangular plate. The inclined surface of the drag reduction plate is provided with a water inlet connected to the drainage channel, and an interception grille is provided at the water inlet.

[0010] In the above technical solution, the design of the drag reduction plate helps to disperse the direct impact of water flow on the rubber dam and reduce the noise level. The water inlet is connected to the drainage channel to ensure the smooth passage of water. The setting of the interception grille prevents large debris from entering the drainage channel and avoids the risk of blockage.

[0011] As a further technical solution, a closing plate is provided on the top of the bottom plate and at both ends of the rubber dam body. The length of the closing plate is greater than the width of the sinking trough. One side of the closing plate contacts the end surface of the rubber dam body, and the other side is connected to the inner wall of the river channel.

[0012] In the above technical solution, the design of the closing plate enhances the sealing of the rubber dam and prevents water from leaking into the sinking trough through the gap between the rubber dam body and the inner wall of the river channel, thereby improving the water-retaining effect of the rubber dam and keeping the sinking trough as dry or even free of water as possible, thus avoiding the equipment cavity from being immersed in water for a long time and helping to increase the service life of the equipment in the equipment cavity.

[0013] As a further technical solution, the inner top wall of the drainage channel is provided with a reserved groove adapted to the adjustment plate, the depth of the reserved groove is greater than the thickness of the adjustment plate, and both ends of the adjustment plate in the length direction are provided with an axis rod rotatably connected to the inner wall of the reserved groove.

[0014] In the above technical solution, the depth of the reserved groove is greater than the thickness of the adjustment plate, so that the adjustment plate can be retracted into the reserved groove as much as possible in a horizontal state, thereby increasing the flow capacity of the drainage channel.

[0015] As a further technical solution, the cross-section of the regulating airbag is fan-shaped, one plane of the regulating airbag is bonded to the inner top wall of the reserved groove, and the other plane is bonded to the side of the regulating plate close to the reserved groove. The regulating airbag with a fan-shaped cross-section can expand and contract more evenly during inflation and deflation, thereby more accurately controlling the angle of the regulating plate and thus controlling the flow rate of the water flow.

[0016] As a further technical solution, the periphery of the two planes of the adjusting airbag is provided with an extended skirt, and the extended skirt is anchored to the inner top wall of the reserved groove or one side of the adjusting plate by rivets. The design of the extended skirt further enhances the connection strength between the adjusting airbag and the reserved groove and the adjusting plate, thereby improving the overall stability of the rubber dam.

[0017] As a further technical solution, the air supply assembly includes a controller, an air pump, a reversing valve and an air supply pipe; the controller and the air pump are arranged in the equipment cavity, the output end of the air pump is connected to the access end of the reversing valve through the air supply pipe, and the two output ends of the reversing valve are respectively connected to the rubber dam body and the regulating airbag through the air delivery pipeline, and the air delivery pipeline is provided with a pressure gauge, so that the design realizes the precise inflation and deflation control of the rubber dam body and the regulating airbag. This design not only improves the automation degree of the rubber dam, but also enhances its safety and reliability.

[0018] As a further technical solution, an exhaust pipe is provided on one side of the regulating airbag and the rubber dam body, and an exhaust valve is provided on the exhaust pipe. The exhaust valve is an electrically controlled valve. The design of the exhaust pipe and the electrically controlled exhaust valve provides the rubber dam body and the regulating airbag with a rapid deflation function, which helps to quickly lower the height of the rubber dam in an emergency and facilitates maintenance and inspection work.

[0019] As a further technical solution, a front baffle is provided on the top of the bottom plate and on one side of the upstream area of ​​the rubber dam body. The front baffle can prevent water and debris from directly hitting the connection between the rubber dam body and the bottom plate, thereby improving the stability of the rubber dam body.

[0020] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention opens a drainage channel in the bottom plate to allow the water in the upstream area to be discharged through the drainage channel instead of draining water by overflowing the dam top, thereby effectively reducing the water level difference between the upstream and downstream areas, so that the water sound generated by the water flowing into the downstream area is greatly reduced, thereby reducing the impact of the water flow sound on the lives of residents around the dam body.

[0021] 2. The present invention is provided with a reversible regulating plate and regulating airbags to achieve effective control of water flow. This design not only helps to prevent river blockage, but also can adjust the degree of opening of the drainage channel by adjusting the inflation and deflation of the airbags, thereby slowing down the water flow speed to a certain extent and further reducing the decibel of the water flow sound.

[0022] 3. The length of the bottom plate of the present invention is greater than the inner width of the river channel, and both ends of the bottom plate are inserted into the interior of both sides of the river channel. Such a design enhances the stability of the bottom plate.

[0023] 4. The design of the equipment cavity and the drain port in the present invention facilitates the placement of the air supply assembly and the discharge of accumulated water accidentally entering the sinking tank, which helps to maintain the normal operation of the rubber dam. The air supply assembly is placed in the equipment cavity, which is convenient for staff to inspect and repair.

[0024] 5. The closing plate of the present invention can prevent a large amount of water from leaking into the sinking trough from the gap between the rubber dam body and the inner wall of the river channel, which not only improves the water-retaining effect of the rubber dam, but also keeps the sinking trough as low in water as possible or even free of water, avoiding the equipment cavity from being immersed in water for a long time, which helps to increase the service life of the equipment in the equipment cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional front-view diagram of the assembly effect of a river and a noise-reducing rubber dam provided by an embodiment of the present invention; Figure 2 A three-dimensional image from a rear perspective of the assembly effect of a river and a noise reduction rubber dam provided by an embodiment of the present invention; Figure 3 A three-dimensional image from the front perspective of a noise-reducing rubber dam provided by an embodiment of the present invention; Figure 4 A three-dimensional image of a noise reduction rubber dam from a rear perspective provided by an embodiment of the present invention; Figure 5 A distribution diagram of the bottom plate, equipment cavity, drain port and drainage channel provided in an embodiment of the present invention; Figure 6 A side view of a noise reduction rubber dam provided by an embodiment of the present invention; Figure 7 A side cross-sectional view of a noise reduction rubber dam provided by an embodiment of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle; Fig. 9 This is a simplified diagram of the connection relationship among the air pump, rubber dam body and regulating airbag of the present invention.

[0026] In the figure: 100, river channel; 1001, sinking trough; 200, upstream area; 300, downstream area; 1, bottom plate; 11, equipment cavity; 12, drain outlet; 2, rubber dam body; 3, drainage channel; 31, reserved groove; 4, adjustment plate; 41, shaft rod; 5, adjustment airbag; 6, air supply assembly; 61, controller; 62, air pump; 63, air supply pipe; 64, reversing valve; 7, drag reduction plate; 71, water inlet; 72, interception grille; 8, closing plate; 9, exhaust pipe; 91, exhaust valve; 10, front baffle. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the directions or positional relationships indicated by terms such as "middle", "upper", "lower", "left", "right", "inside" and "outside" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0029] like Figure 1 As shown, the specific scheme of the embodiment is as follows: a noise reduction rubber dam, comprising a bottom plate 1 arranged across a river channel 100, a rubber dam body 2 for closing the river channel 100 is provided on the bottom plate 1, the rubber dam body 2 divides the river channel 100 into an upstream area 200 and a downstream area 300, a drainage channel 3 penetrating the bottom plate 1 is opened in the bottom plate 1 along the direction of the river channel 100, a reversible adjustment plate 4 is provided on the inner top wall of the drainage channel 3, an adjustment air bag 5 is provided between the adjustment plate 4 and the inner top wall of the drainage channel 3, and an air supply component 6 for providing an air source to the adjustment air bag 5 and the rubber dam body 2 is provided in the bottom plate 1.

[0030] In this embodiment, by opening a drainage channel 3 in the bottom plate 1, the water in the upstream area 200 is discharged through the drainage channel 3 instead of draining by overflowing the dam top, thereby effectively reducing the water level difference between the upstream and downstream areas, allowing the water to flow more smoothly, and greatly reducing the water sound generated by the water flowing into the downstream area 300.

[0031] By providing a reversible adjustment plate 4 and an adjustment airbag 5, effective control of the water flow is achieved. The degree of opening of the drainage channel 3 is adjusted by adjusting the inflation and deflation of the airbag 5, thereby slowing down the water flow speed to a certain extent and further reducing the decibel of the water flow sound, thereby reducing the impact of the water flow sound on the lives of residents around the dam.

[0032] In addition, this design is also helpful to prevent the river channel 100 from being blocked. Specifically, the air in the regulating airbag 5 can be released regularly to make the regulating plate 4 lose the supporting force of the regulating airbag 5. The water in the upstream area 200 will push the regulating plate 4 into a horizontal state, thereby increasing the water flow in the drainage channel instantly. The impurities such as small debris previously accumulated in the drainage channel 3 can be washed away at once, thereby preventing the drainage channel 3 from being blocked to a certain extent.

[0033] In this embodiment, an exhaust pipe 9 is provided on one side of the regulating airbag 5 and the rubber dam body 2, and an exhaust valve 91 is provided on the exhaust pipe 9. The exhaust valve 91 is an electrically controlled valve. The design of the exhaust pipe 9 and the exhaust valve 91 provides the rubber dam body 2 and the regulating airbag 5 with a deflation function.

[0034] In specific applications, in order to avoid the problem that the water pressure in the upstream area is too high, which causes great pressure on the regulating plate 4 and makes it difficult for the air supply component 6 to inflate the regulating airbag 5, the installation time of the device should be selected when the water level of the river or canal is at its lowest. At this time, the water level is low, and the pressure of the water in the upstream area 200 on the regulating plate 4 is not very large. The air supply component 6 can inflate the regulating airbag 5 relatively easily, so that the regulating airbag 5 expands, the regulating plate 4 is opened, and the rubber dam body 2 is filled with air at this time.

[0035] It should be noted here that after the installation is complete, the initial state of the adjustment plate 4 is set to be inclined between 20° and 35°, so that the drainage channel 3 can only release a small amount of water, that is, to meet the water storage requirements, while preventing water from overflowing from the surface of the rubber plate. As the water demand changes, the air in the adjustment airbag 5 is gradually released to change the opening and closing range of the adjustment plate 4.

[0036] During irrigation, the gas in the regulating airbag 5 is released to make the regulating airbag 5 deflate, so that the regulating plate 4 can be tilted to a certain extent, and the water in the upstream area 200 pushes the regulating plate 4 open, thereby releasing the river water required for irrigation. The amount of gas released is determined by the amount of water required for irrigation. If the amount of water required for irrigation is small, it is sufficient to release a small amount of air in the regulating airbag 5 and then close the exhaust valve 91. If the amount of water required for irrigation is large, it is sufficient to release more air from the regulating airbag 5 and then close the exhaust valve 91.

[0037] When discharging flood water, after the exhaust valve 91 is opened, the strong water pressure of the upstream area 200 can be used to apply pressure to the regulating plate 5, so that the regulating airbag 5 is subjected to an equal pressure, thereby effectively accelerating the deflation speed of the regulating airbag 5, so that the regulating plate 4 can rotate to a horizontal state faster, and then the full channel is discharged. In addition, if there is a greater need for flood discharge, the air in the rubber dam body 2 can be directly released to reduce the height of the dam body and allow the flood peak to be discharged quickly.

[0038] After the flood peak has passed, when the water levels in the upstream area 200 and the downstream area 300 are equal, the water pressure in the upstream area 200 is close to the water pressure in the downstream area 300, and the rubber dam body 2 and the regulating airbag 5 can be easily inflated again, so that the rubber dam body 2 can resume the function of blocking the river and storing water, and the regulating plate 4 can be restored to its initial state, allowing only a small amount of water to be discharged.

[0039] like Figure 1-2 As shown, in this embodiment, a river channel 100 is placed at the bottom plate 1, the riverbed is paved with concrete, and anchors are pre-embedded in the concrete riverbed so that they can be connected to the anchors on the bottom plate 1, and the river walls on both sides of the river channel 100 are built with concrete to ensure the stability of the bottom plate 1.

[0040] like Figure 1-2 As shown, the length of the bottom plate 1 is greater than the inner width of the river channel 100, and the two ends of the bottom plate 1 are respectively inserted into the interior of the two sides of the river channel 100. Both sides of the river channel 100 are provided with sinking grooves 1001 adapted to the two ends of the bottom plate 1, and both ends of the bottom plate 1 are provided with equipment cavities 11. A drainage outlet 12 connected to the equipment cavity 11 is provided on one side of the bottom plate 1 close to the downstream area 300.

[0041] In this embodiment, the bottom plate 1 is designed to be longer than the inner width of the river channel 100 and to have both ends inserted into the inner sides of the river channel 100, thereby enhancing the stability of the bottom plate 1. At the same time, the design of the equipment cavity 11 and the drain port 12 facilitates the placement of the air supply assembly 6 and the drainage of the accumulated water that accidentally enters the sinking tank 1001, which helps to maintain the normal operation of the rubber dam.

[0042] like Figure 1-2 As shown, in this embodiment, the length of the sinking trough 1001 is greater than the length of the bottom plate 1 inserted into the sinking trough 1001, and a step is provided on one side of the sinking trough 1001 to facilitate maintenance personnel to enter the sinking trough 1001 and repair the equipment in the equipment cavity 11 in the sinking trough 1001.

[0043] like Figure 1-3 As shown, a drag reducing plate 7 is provided on the side of the bottom plate 1 facing the upstream area 200. The drag reducing plate 7 is a triangular plate. The design of the drag reducing plate 7 helps to disperse the direct impact of the water flow on the rubber dam and reduce the noise level. A water inlet 71 connected to the drainage channel 3 is provided on the inclined surface of the drag reducing plate 7 to ensure the smooth passage of the water flow. In addition, an intercepting grille 72 is provided at the water inlet 71 to prevent large debris from entering the drainage channel 3, avoiding the risk of blockage. The intercepting grille 72 can be placed and arranged with steel bars at intervals.

[0044] Preferably, when designing the water inlet 71, the maximum length of the water inlet 71 can be close to the inner width of the river channel 100. For example, if the inner width of the river channel 100 is 10 meters, the length of the water inlet 71 can be designed to be about 9 meters, so as to ensure that the flow volume is guaranteed as much as possible when the bottom plate 1 is strong enough.

[0045] like Figure 1-4 As shown, in this embodiment, the lengths of the rubber dam body 2 and the drag reduction plate 7 are both flush with the inner width of the river channel 100 , thereby facilitating the placement of the bottom plate 1 into the river channel 100 .

[0046] In this embodiment, a closing plate 8 is provided on the top of the bottom plate 1 and at both ends of the rubber dam body 2. The length of the closing plate 8 is greater than the width of the sinking trough 1001, one side of the closing plate 8 contacts the end face of the rubber dam body 2, and the other side of the closing plate 8 is connected to the inner wall of the river channel 100. The design of the closing plate 8 can enhance the sealing of the rubber dam and prevent water from leaking into the sinking trough 1001 from the gap between the rubber dam body 2 and the inner wall of the river channel 100, thereby improving the water retaining effect of the rubber dam and keeping the sinking trough 1001 as low as possible or even without water, thus avoiding the equipment cavity 11 from being immersed in water for a long time, which helps to improve the service life of the equipment in the equipment cavity 11. Secondly, a chamfered edge is provided on the inner side of the closing plate 8 facing the upstream area 200.

[0047] During the actual assembly, after the bottom plate 1 is installed, the side of the closing plate 8 facing the inner wall of the river channel 100 is sealed with cement mortar. After the mortar is cured, it can effectively prevent the water in the upstream area 200 from entering the sinking tank 1001. In addition, the top surface of the closing plate 8 is flush with the top surface of the river bank constructed of concrete, so as to better intercept the river water.

[0048] like Figure 8 As shown, in this embodiment, a reserved groove 31 adapted to the adjustment plate 4 is opened on the inner top wall of the drainage channel 3, and both ends of the adjustment plate 4 in the length direction are provided with an axis rod 41 rotatably connected to the inner wall of the reserved groove 31, or the axis rod 41 is directly movable through the adjustment plate 4 to ensure that the adjustment plate 4 can rotate flexibly.

[0049] It should be noted that the depth of the reserved groove 31 is greater than the thickness of the adjustment plate 4. The depth of the reserved groove 31 is greater than the thickness of the adjustment plate 4, which allows the adjustment plate 4 to be retracted into the reserved groove 31 as much as possible in a horizontal state, thereby increasing the flow capacity of the drainage channel 3.

[0050] like Figure 7-8As shown, the cross-section of the regulating airbag 5 is fan-shaped, one plane of the regulating airbag 5 is bonded to the inner top wall of the reserved groove 31, and the other plane is bonded to the side of the regulating plate 4 close to the reserved groove 31. The regulating airbag 5 with a fan-shaped cross-section can expand and contract more evenly during inflation and deflation, thereby more accurately controlling the angle of the regulating plate 4, thereby controlling the flow rate of the water flow.

[0051] In this embodiment, the periphery of the two planes of the adjusting airbag 5 is provided with an extended skirt, and the extended skirt is anchored to the inner top wall of the reserved groove 31 or one side of the adjusting plate 4 by rivets. The design of the extended skirt further enhances the connection strength between the adjusting airbag 5 and the reserved groove 31 and the adjusting plate 4, thereby improving the overall stability of the rubber dam.

[0052] like Fig. 9 As shown, the air supply assembly 6 includes a controller 61, an air pump 62, a reversing valve 64 and an air supply pipe 63; wherein, the controller 61 and the air pump 62 are arranged in the equipment cavity 11, and the output end of the air pump 62 is connected to the access end of the reversing valve 64 through the air supply pipe 63; secondly, the two output ends of the reversing valve 64 are respectively connected to the rubber dam body 2 and the regulating airbag 5 through the air supply pipeline; in addition, a pressure gauge is provided on the air supply pipeline, which is convenient for adjusting the gas content in the rubber dam body 2 and the regulating airbag 5 through the air pressure display. Such a design realizes the precise inflation and deflation control of the rubber dam body 2 and the regulating airbag 5, which not only improves the automation degree of the rubber dam, but also enhances its safety and reliability.

[0053] like Figure 6 As shown, it should be noted that in order to prevent the air supply assembly 6 from failing and failing to adjust the rubber dam 2 and the regulating airbag 5 in time, in this embodiment, a set of air supply assemblies 6 are respectively provided in the equipment cavities 11 at both ends.

[0054] like Figure 1-5 As shown, a front baffle 10 is provided on the top of the bottom plate 1 and on one side of the upstream area 200 of the rubber dam body 2. The front baffle 10 can prevent water and debris from directly hitting the connection between the rubber dam body 2 and the bottom plate 1, thereby improving the stability of the rubber dam body 2.

[0055] In order to improve the resistance of the front baffle 10 to the impact force of water flow, the front baffle 10 is designed to be a trapezoidal structure with its slope facing the upstream area 200, so that the force of the water flow can be dispersed after the water flow hits the front baffle 10.

[0056] The working principle of the above embodiment is as follows: the river channel 100 is divided into an upstream area 200 and a downstream area 300 by the bottom plate 1 and the rubber dam body 2 arranged across the river channel 100, and the water in the upstream area 200 is allowed to flow away from below by the drainage channel 3 opened in the bottom plate 1, so as to reduce the water flow difference between the upstream area 200 and the downstream area 300, thereby reducing the sound of flowing water generated by the river water passing through the dam body, and the size of the water flow is controlled by the reversible adjustment plate 4, and the adjustment plate 4 adjusts the opening degree by adjusting the inflation and deflation of the airbag 5, thereby further slowing down the water flow speed and reducing the noise. The air supply component 6 provides precise air source control for the rubber dam body 2 and the adjustment airbag 5 to ensure the stable operation of the rubber dam; in an emergency, the air can be quickly deflated through the electrically controlled exhaust valve 91 to reduce the height of the rubber dam, which is convenient for maintenance and overhaul.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A noise reduction rubber dam, comprising a bottom plate arranged across a river channel, a rubber dam body for closing the river channel being arranged on the bottom plate, the rubber dam body dividing the river channel into an upstream area and a downstream area, wherein: A drainage channel is provided in the bottom plate along the direction of the river channel and passes through the bottom plate. A flippable adjustment plate is provided on the inner top wall of the drainage channel. An adjustment air bag is provided between the adjustment plate and the inner top wall of the drainage channel. An air supply component is provided in the bottom plate to provide an air source to the adjustment air bag and the rubber dam body.

2. The noise reduction rubber dam according to claim 1 is characterized in that: The length of the bottom plate is greater than the inner width of the river channel, and the two ends of the bottom plate are respectively inserted into the interior of the two sides of the river channel. Both sides of the river channel are provided with sinking grooves adapted to the two ends of the bottom plate, and both ends of the bottom plate are provided with equipment cavities. The side of the bottom plate close to the downstream area is provided with a drainage outlet connected to the equipment cavity.

3. The noise reduction rubber dam according to claim 1 is characterized in that: A drag reduction plate is provided on the side of the bottom plate facing the upstream area. The drag reduction plate is a triangular plate. A water inlet connected to the drainage channel is opened on the inclined surface of the drag reduction plate. An interception grille is provided at the water inlet.

4. The noise reduction rubber dam according to claim 2 is characterized in that: A closing plate is provided on the top of the bottom plate and at both ends of the rubber dam body. The length of the closing plate is greater than the width of the sinking groove. One side of the closing plate contacts the end surface of the rubber dam body, and the other side is connected to the inner wall of the river channel.

5. The noise reduction rubber dam according to claim 1 is characterized in that: The inner top wall of the drainage channel is provided with a reserved groove adapted to the adjustment plate, the depth of the reserved groove is greater than the thickness of the adjustment plate, and both ends of the adjustment plate in the length direction are provided with shafts rotatably connected to the inner wall of the reserved groove.

6. The noise reduction rubber dam according to claim 5 is characterized in that: The cross section of the regulating airbag is fan-shaped, one plane of the regulating airbag is bonded to the inner top wall of the reserved groove, and the other plane is bonded to the side of the regulating plate close to the reserved groove.

7. The noise reduction rubber dam according to claim 5 is characterized in that: The peripheries of the two planes of the regulating airbag are both provided with extended skirts, and the extended skirts are anchored to the inner top wall of the reserved groove or one side of the regulating plate through rivets.

8. The noise reduction rubber dam according to claim 2 is characterized by: The air supply assembly includes a controller, an air pump, a reversing valve and an air supply pipe; the controller and the air pump are arranged in the equipment cavity, the output end of the air pump is connected to the access end of the reversing valve through the air supply pipe, the two output ends of the reversing valve are respectively connected to the rubber dam body and the regulating air bag through the air supply pipeline, and the air supply pipeline is provided with a pressure gauge.

9. The noise reduction rubber dam according to claim 1 is characterized in that: An exhaust pipe is provided on one side of the regulating airbag and the rubber dam body. An exhaust valve is provided on the exhaust pipe. The exhaust valve is an electrically controlled valve.

10. The noise reduction rubber dam according to claim 1 is characterized in that: A front baffle is provided on the top of the bottom plate and on one side of the upstream area of ​​the rubber dam body.

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