Air shield dam with bidirectional water retaining function

Abstract

The utility model discloses an air shield dam with a bidirectional water retaining function, and relates to the field of retaining dams, the air shield dam comprises an air shield dam body, an inflation and deflation device connected with the air shield dam body, a controller for controlling the inflation and deflation device, and a front water level sensor and a rear water level sensor which are located on the front side and the rear side of the air shield dam body and connected with the controller. According to the air shield dam, two-way water retaining of the upstream face and the downstream face can be achieved at the same time, it is guaranteed that operation can be rapidly and accurately conducted under various water conditions, and the protection effect and the operation reliability are remarkably improved.

Description

Technical Field

[0001] This application relates to the field of retaining dams, and in particular to a pneumatic shield dam with a two-way water retaining function. Background Art

[0002] The pneumatic shield dam is a movable dam type widely used in waters such as rivers, lakes, and coasts, mainly for flood control and water flow regulation. The traditional pneumatic shield dam design absorbs the advantages of various movable dam types, including simple structure, short construction and installation periods, strong flood control and flood passing capabilities, safe and reliable operation, controllable water passing height and state, strong sewage cleaning and silt removal capabilities, high water retaining and passing capabilities, short charging and discharging times, simple operation management, long service life, high comprehensive benefits, strong seismic resistance, and high adaptability to the foundation. In addition, the pneumatic shield dam also has certain advantages in the landscape effect, so it has been widely used in various water conservancy projects.

[0003] Although the traditional pneumatic shield dam has many advantages, some obvious deficiencies have also emerged in practical applications, especially when dealing with complex application scenarios. For example, at the river estuary or the confluence of two rivers, the pneumatic shield dam not only needs to block the incoming water from the upstream side, but also needs to prevent seawater backflow during high tide or when the upstream water level is low. This requirement for two-way water retaining is a huge challenge for the traditional pneumatic shield dam. The design of the traditional pneumatic shield dam is mainly optimized for one-way water flow and lacks the ability to adapt to reverse water flow. Especially in aspects such as the water stop of the side piers, the limit of the shield plate by the safety restraint belt, and the charging and discharging control system, the requirements for two-way water retaining are not considered.

[0004] Specifically, there are several significant problems with the traditional pneumatic shield dam during reverse water retaining. First, the airbag generates a large buoyancy force in water. When the reverse water flow impacts the pneumatic shield dam, the combined action of the buoyancy force of the airbag and the water impact force causes obvious pulling and impact on the connection structure. Due to design limitations, the traditional pneumatic shield dam cannot effectively resist these external forces, resulting in its inability to work stably and safely during reverse water retaining. In this case, not only the water retaining effect of the pneumatic shield dam is affected, but also its operation reliability and service life will be greatly reduced. Summary of the Utility Model

[0005] The purpose of this application is to at least overcome one deficiency existing in the prior art, and provide a pneumatic shield dam with a two-way water retaining function. This pneumatic shield dam can simultaneously achieve two-way water retaining on the water-facing side and the back water-facing side, ensuring rapid and accurate operation under various water conditions, and significantly improving the protection effect and operation reliability.

[0006] To achieve the above object, the present application discloses an air shield dam with a two-way water retaining function. The air shield dam includes an air shield dam body, an air charging and discharging device connected to the air shield dam body, a controller for controlling the air charging and discharging device, and a front water level sensor and a rear water level sensor located on both the front and back sides of the air shield dam body and connected to the controller. Among them:

[0007] The air shield dam body includes a dam bottom, a shield plate group with the lower edge sealed and hinged to the dam bottom, and at least one airbag whose expansion state is controlled by the air charging and discharging device and cooperates with the shield plate group;

[0008] The shield plate group is composed of multiple horizontally parallel shield plates, and the adjacent two shield plates are sealed and connected through an intermediate sealing belt;

[0009] The position of the shield plate group near the upper edge is limitedly connected to the dam bottom through a flexible connecting piece, thereby controlling the upward turning stroke of the shield plate group. The flexible connecting piece also cooperates with the shield plate group to form an installation position for installing the airbag, and the airbag is installed in this installation position;

[0010] A matching balance member is also provided at the upper edge of the shield plate;

[0011] The airbag is in contact and cooperation with at least one shield plate.

[0012] In some embodiments, a basic soft connection section is provided at the lower edge of the shield plate, and the lower edge of the shield plate is locked to the dam bottom by using this basic soft connection section, so that the shield plate is hinged to the dam bottom.

[0013] In some embodiments, the shield plate is an arc-shaped plate biased towards the side of the airbag, and there are several protrusions acting as reinforcing ribs on the plate of the shield plate.

[0014] In some embodiments, the air shield dam body also has side walls that are hermetically matched with both sides of the shield plate group. At least one Ω-shaped sealing strip is provided on the outer side surfaces of the shield plates at the two outer edges of the shield plate group. During cooperation, the Ω-shaped sealing strip presses against the side walls to form a seal.

[0015] In some embodiments, the flexible connecting piece is one or a combination of a safety limiting belt and a limiting cable chain.

[0016] In some embodiments, the balance member is a weight steel rod or several cooperating cement blocks.

[0017] Compared with the prior art, the present application has at least the following beneficial effects:

[0018] 1. Two-way water retaining function: By arranging a front water level sensor and a rear water level sensor on both the front and back sides of the air shield dam body, the air shield dam can monitor the water level change in real time and control the air charging and discharging device through the controller, so as to achieve two-way water retaining for the upstream and downstream water flows and effectively cope with complex hydrological environments.

[0019] 2. Structural stability: The flexible connector provides sufficient tensile force to balance the buoyancy of the airbag, ensuring structural stability.

[0020] 3. Balanced force design: A matching balance component is provided along the upper edge of the shield plate. By utilizing the expansion state of the airbag to contact and cooperate with the shield plate, through the design of counterweight balance components such as counterweight balance square steel, the shield plate can remain stable under the lifting force of the airbag and the water flow pressure, ensuring the water retaining height.

[0021] The beneficial effects listed above do not exhaust all advantages. Other potential beneficial effects and detailed technical implementation manners will be further disclosed in the embodiments or other description parts of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] After reading the following specific implementation manners in conjunction with the drawings, various aspects of the present disclosure will be better understood. Sometimes, the positions, dimensions, and ranges of the various structures shown in the drawings and the like do not represent the actual positions, dimensions, and ranges, etc. In the drawings:

[0023] Figure 1 is a schematic structural diagram of an embodiment disclosed in this application, and the air charging and discharging device and the controller are omitted in the figure.

[0024] Figure 2 is a schematic structural diagram of an embodiment disclosed in this application from another perspective, and the air charging and discharging device and the controller are omitted in the figure.

[0025] Figure 3 is a schematic structural diagram of the shield dam body in an implementation disclosed in this application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The present disclosure will be described below with reference to the drawings, in which several embodiments of the present disclosure are shown. However, it should be understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below. In fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully explain the protection scope of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0027] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, for clarity, the dimensions of some features may be deformed.

[0028] It should be understood that the terms in the specification are only used to describe specific embodiments and are not intended to limit the present disclosure. All terms used in the specification (including technical terms and scientific terms) have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of brevity and / or clarity, technologies, methods, and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the authorized specification.

[0029] The singular forms “a,” “the,” and “said” used in the specification include the plural forms unless clearly specified otherwise. The terms “comprising,” “including,” and “containing” used in the specification indicate the presence of the claimed features, but do not preclude the presence of one or more other features. The term “and / or” used in the specification includes any and all combinations of one or more of the related listed items. Embodiment

[0030] As Figures 1 to 3 As shown, this embodiment discloses an exemplary structure of an air shield dam with a two-way water blocking function, and its structural components include an air shield dam body 1, an air charging and discharging device (not shown in the figure) connected to the air shield dam body 1, a controller (not shown in the figure) for controlling the air charging and discharging device, a front water level sensor 10 and a rear water level sensor 11 located on both the front and back sides of the air shield dam body 1 and connected to the controller.

[0031] In this embodiment, the air shield dam body 1 is composed of a dam bottom 2, a shield plate group with its lower edge sealed and hinged to the dam bottom 2, and at least one airbag 7 whose expansion state is controlled by the air charging and discharging device and cooperates with the shield plate group.

[0032] Specifically, the shield plate group is composed of multiple shield plates 4 arranged horizontally and flatly, and adjacent shield plates 4 are hermetically connected through an intermediate sealing strip 5. The intermediate sealing strip 5 is made of a high-strength rubber material, has good elasticity and sealing performance, and can effectively prevent water from flowing through the gaps between the shield plates 4.

[0033] Furthermore, the shield plate group is limitedly connected to the dam bottom 2 near the upper edge through a flexible connecting member 6 to control the upward turning stroke of the shield plate group. The flexible connecting members 6 such as a safety limiting belt 8 and a limiting cable chain 9 provide a limiting function for the shield plate group during the turning process, while allowing a certain degree of flexibility to ensure that the shield plate group can still maintain stability under different water flow impacts.

[0034] Furthermore, the flexible connecting member 6 and the shield plate group cooperate to form an installation position for installing the airbag 7, and the airbag 7 is installed in this installation position. The airbag 7 is made of wear-resistant and compression-resistant rubber or composite material, and can rapidly expand and contract during the inflation and deflation processes to provide sufficient buoyancy or supporting force. A matching balance member 14, such as a counterweight balance square steel, is provided along the upper edge of the shield plate 4, and the lifting force of the airbag 7 is balanced by its own weight to ensure that the shield plate 4 can maintain stability under the impact of water flow.

[0035] To enhance the sealing effect of the shield plate group, side walls 3 that are hermetically matched with the two side edges of the shield plate group are provided along the two side edges of the shield plate group. The side walls 3 are made of concrete or steel structure and have high strength and durability. At least one Ω-shaped sealing rubber strip is provided on the outer side surface of the shield plate 4 at the two outer edges of the shield plate group. During mating, the Ω-shaped sealing rubber strip presses against the side wall 3 to form a seal. This design can effectively prevent water flow from leaking from the side and improve the overall water blocking effect.

[0036] In addition, a basic flexible connection section 12 is provided along the lower edge of the shield plate 4. The lower edge of the shield plate 4 is locked to the dam bottom 2 by using this basic flexible connection section 12, so that the shield plate 4 is hinged to the dam bottom 2. The basic flexible connection section 12 is usually made of wear-resistant rubber or flexible material, and can allow a certain angle change while maintaining the seal, ensuring the flexibility and stability of the shield plate 4 during the flipping process. The shield plate 4 is designed as an arc-shaped plate that is biased towards the side of the airbag 7, and there are several protrusions 13 acting as reinforcing ribs on the plate to improve the strength and rigidity of the shield plate 4. These protrusions 13 acting as reinforcing ribs can effectively disperse the water flow impact force and prevent the shield plate 4 from deforming.

[0037] During the specific use process, the pneumatic shield dam monitors the water level change through the front water level sensor 10 and the rear water level sensor 11, and transmits the signal to the controller. The controller controls the inflation and deflation device according to the water level signal to adjust the expansion state of the airbag 7 to achieve bidirectional water blocking of the upstream and downstream water flows. When the upstream water level rises, the front water level sensor 10 detects the water level change and transmits the signal to the controller. After receiving the signal, the controller starts the inflation device to make the airbag 7 expand rapidly. The expansion force of the airbag 7 pushes the shield plate group to turn up, so that the matching balance member 14 along the upper edge of the shield plate 4 is hermetically connected to the dam bottom 2, thereby blocking the upstream incoming water and preventing the flood from flowing to the downstream area. During this process, the flexible connecting member 6 and the intermediate sealing strip 5 ensure the stability and sealing of the shield plate group during the upward turning, and prevent water flow from leaking through the gaps between the shield plates 4. The Ω-shaped sealing rubber strip fits tightly with the side wall 3, further enhancing the sealing effect of the shield plate group.

[0038] When the tide rises or the downstream water level increases, the rear water level sensor 11 detects the water level change and transmits a signal to the controller. After receiving the signal, the controller activates the deflation device to discharge the air in the airbag 7, preventing the airbag 7 from generating excessive buoyancy. Due to the reduction of the buoyancy of the airbag 7, the shield plate 4 can remain stable, thus preventing damage to the structure due to excessive buoyancy. During this process, the rib design on the shield plate 4 enhances its structural strength, enabling the shield plate 4 to remain stable and unchanged under the impact of water flow. The rapid contraction of the airbag 7 combined with the flexible control of the deflation device ensures that the shield plate group can respond promptly to water level changes and prevent the downstream area from being invaded by seawater.

[0039] For example, at the river estuary, when the upstream flood comes, the pneumatic shield dam monitors the rapid rise of the upstream water level through the front water level sensor 10 and immediately activates the inflation device. The airbag 7 expands and pushes the shield plate 4 to turn up, forming a solid water retaining barrier to block the upstream water and protect the downstream area from the threat of flood. During the high tide, the rear water level sensor 11 detects the rise of the seawater level, and the controller activates the deflation device to discharge the air in the airbag 7, preventing the airbag 7 from generating excessive buoyancy, thereby avoiding the pulling and impact on the structure and ensuring the stability of the shield plate 4.

[0040] At the confluence of two rivers, when the water level of one side of the river rises, the pneumatic shield dam can respond quickly. By controlling the inflation and deflation device, it adjusts the inflation state of the airbag 7 to make the shield plate 4 turn up to block the water coming from that side; when the water level of the other side of the river rises, the pneumatic shield dam can also respond quickly, control the discharge of the air in the airbag 7, and keep the shield plate 4 stable to prevent damage to the structure due to excessive buoyancy. The whole process is monitored and adjusted in real time by the controller and the water level sensor to ensure that the pneumatic shield dam can operate stably in various hydrological environments.

[0041] Through these detailed scenario descriptions, it can be seen that the pneumatic shield dam with a two-way water retaining function has flexible response capabilities and excellent protection effects in complex hydrological environments. Its innovative design and efficient operation not only improve the safety of flood control and moisture protection, but also demonstrate significant economic and social values in practical applications.

[0042] Although the exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. An air shield dam with bidirectional water retaining function, characterized in that: The air shield dam comprises: an air shield dam body, an air charging and discharging device connected to the air shield dam body, a controller for controlling the air charging and discharging device, and a front water level sensor and a rear water level sensor located on both sides of the air shield dam body and connected to the controller, wherein: The air shield dam body comprises a dam bottom, a shield plate group whose lower edge is sealed and hinged with the dam bottom, and at least one air bag whose expansion state is controlled by an inflation and deflation device and cooperates with the shield plate group; The shield plate group is composed of a plurality of shield plates arranged horizontally and in parallel, and two adjacent shield plates are sealed and connected by an intermediate sealing belt; The shield plate group is connected to the dam bottom by a flexible connector near the upper edge to achieve a limited position, thereby controlling the upward flipping stroke of the shield plate group. The flexible connector also cooperates with the shield plate group to form an installation position for installing an airbag, and the airbag is installed in the installation position; The upper edge of the shield is also provided with a matching balance piece; The airbag is in contact with at least one shield plate; A basic soft connection section is provided at the lower edge of the shield plate, and the lower edge of the shield plate is locked on the dam bottom by using the basic soft connection section, so that the shield plate is hinged on the dam bottom.

2. An air shield dam with bidirectional water retaining function as claimed in claim 1, characterized in that: The shield plate is an arc-shaped plate that is biased toward one side of the airbag, and has a plurality of protrusions that serve as reinforcing ribs.

3. The air shield dam with bidirectional water retaining function as claimed in claim 1, characterized in that: The air shield dam body also has side walls that seal with the two side edges of the shield plate group. At least one Ω-shaped sealing strip is provided on the outer side surfaces of the shield plates at the two outer edges of the shield plate group. When in cooperation, the Ω-shaped sealing strip presses against the side walls to form a seal.

4. The air shield dam with bidirectional water retaining function as claimed in claim 1, characterized in that: The flexible connector is one or a combination of a safety limiting belt and a limiting chain.

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