A new water intake head structure

Abstract

The utility model discloses a novel water taking head structure, including main body frame, gabion net box bottom protection, pollution barrier and water delivery pipeline, the main body frame includes concrete bored pile and concrete pier, the concrete bored pile has a plurality of and lower part is buried in the river bed, the concrete pier sets up on the river bed, the gabion net box bottom protection sets up on the river bed inside the main body frame, the pollution barrier includes lateral pollution barrier and top pollution barrier, the lateral pollution barrier sets up in the side of main body frame, and the top pollution barrier sets up in the top of main body frame, the water delivery pipeline sets up on the concrete pier and extends into the inside of main body frame, is used for taking water from the inside area of main body frame. The water taking head can reduce the construction difficulty, shorten the construction period, reduce the adverse effect of construction period and operation period to the river flood discharge, reduce the project cost, and be convenient for the operation maintenance of later period.

Description

Technical Field

[0001] This utility model relates to the field of water intake engineering technology, specifically to a novel water intake head structure. Background Technology

[0002] A water intake head is a facility located in a submerged or semi-submerged riverbed that draws water into an intake pipe through its inlet hole. It is generally located in a deep channel of a stable riverbed with sufficient water depth. The location must ensure the safety and reliability of water intake, meet the requirements for water quality and quantity, and ensure that it is not damaged during riverbed evolution. The shape of the water intake head should reduce water flow resistance, and the water-facing surface should be streamlined with the long axis aligned with the direction of water flow.

[0003] When installing small-flow, small-diameter intake heads in small and medium-sized rivers, the construction and diversion are relatively simple, the overall size is small, and the installation and construction are easy, with minimal impact on river flood control. However, when installing large-flow, large-diameter intake heads in large rivers, the construction and diversion are difficult, the construction of large intake heads significantly obstructs river flood control, the construction period is long, and the cost is high. Therefore, it is necessary to optimize the existing intake head layout to make it suitable for various rivers, reduce the impact on river flood control, facilitate construction, shorten the construction period, and optimize project costs. Utility Model Content

[0004] The purpose of this utility model is to provide a new water intake head structure to address the above-mentioned shortcomings of existing water intake heads. This structure can reduce the construction difficulty of the water intake head, shorten the construction period, reduce the adverse impact on river flood discharge, reduce project costs, and facilitate subsequent operation and maintenance.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model provides a novel water intake head structure, including a main frame, a gabion mesh bottom protection, a trash rack, and a water conveyance pipeline. The main frame includes concrete cast-in-place piles and concrete piers. Multiple concrete cast-in-place piles are embedded in the riverbed, and the concrete piers are positioned on the riverbed. The gabion mesh bottom protection is located on the riverbed inside the main frame. The trash rack includes lateral trash racks and a top trash rack. The lateral trash racks are located on the sides of the main frame, and the top trash rack is located on the top of the main frame. The water conveyance pipeline is positioned on the concrete piers and extends into the interior of the main frame for drawing water from the interior area of ​​the main frame.

[0007] As a preferred embodiment of this utility model, the long axis of the concrete anchor is arranged along the direction of water flow, and the concrete cast-in-place pile is located on one side of the concrete anchor; the lateral trash rack is set between two adjacent concrete cast-in-place piles and between the concrete cast-in-place pile and the concrete anchor.

[0008] As a preferred embodiment of this utility model, the concrete cast-in-place piles are arranged in two rows on one side of the concrete anchor, and the concrete cast-in-place piles in the two rows are arranged at intervals along the direction of water flow.

[0009] As a preferred embodiment of this utility model, one row near the concrete anchor has two concrete piles, and the distance between the two concrete piles is greater than the length of the concrete anchor; the other row has three concrete piles, and is arranged directly opposite the concrete anchor.

[0010] As a preferred embodiment of this utility model, a steel sleeve for the concrete pile is provided on the upper part of the pile, and a connector for fixing the lateral trash rack is provided on the outer wall of the steel sleeve.

[0011] As a preferred embodiment of this utility model, the height of the steel casing of the cast-in-place pile is consistent with the height of the lateral trash rack.

[0012] As a preferred embodiment of this utility model, the bottom protection of the gabion mesh box is a gabion structure.

[0013] As a preferred embodiment of this utility model, the water supply pipeline is a double-pipe arrangement.

[0014] As a preferred embodiment of this utility model, the top trash rack is connected to the side trash rack and the concrete pier.

[0015] As a preferred embodiment of this utility model, the top trash rack has a detachable connection structure.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0017] This utility model's water intake head features a main frame comprising multiple concrete piles embedded in the riverbed, with the concrete piers positioned on the riverbed. Lateral debris barriers are installed on the sides and top of the main frame, while gabion mesh cages provide bottom protection inside the frame. Water delivery pipes are mounted on the concrete piers. This water intake head reduces construction difficulty, shortens the construction period, minimizes adverse impacts on river flood control during construction and operation, lowers project costs, and facilitates subsequent operation and maintenance. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0019] Figure 1 This is a plan view of the novel water intake head structure in this utility model;

[0020] Figure 2 This utility model Figure 1 AA section diagram in the image;

[0021] Figure 3 This is an isometric view of the novel water intake head structure of this utility model.

[0022] The attached diagram shows the markings and corresponding component names:

[0023] 1- Lateral trash rack, 2- Concrete pile, 3- Steel sleeve for pile, 4- Gabion mesh bottom protection, 5- Concrete anchor, 6- Water pipeline, 7- Top trash rack. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only used to explain this utility model and are not intended to limit this utility model.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0026] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the indicated technical features.

[0027] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0028] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0029] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0030] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces), unless otherwise explicitly specified.

[0031] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0033] There are two main types of traditional water intake heads: one is an underwater (or partially underwater) reinforced concrete intake head, and the other is a reinforced concrete intake tower that is exposed above the water surface. Because traditional water intake heads generally use cast-in-place reinforced concrete structures, they have high requirements for river channel construction, diversion, seepage prevention, and mechanical equipment, making construction difficult and temporary works expensive.

[0034] Meanwhile, traditional water intake heads have long construction periods, especially for larger ones, where the cofferdam construction period is lengthy, significantly impacting river flood control and navigation. After completion, they occupy part of the river's flood control cross-section, causing some flood obstruction, severe local scouring, high requirements for foundation treatment, and long-term operation leading to siltation, preventing the use of the original river flow for sand flushing, thus increasing the difficulty of later operation and maintenance.

[0035] In view of this, after in-depth research, the applicant optimized and adjusted the structure of the water intake head, and invented a new type of water intake head structure, which is suitable for the water conservancy and hydropower engineering industry, especially for water intake projects with large flow, large pipe diameter and wide river channels. It can reduce the construction difficulty of the water intake head, shorten the construction period, reduce the adverse impact on river flood discharge during the construction and operation period, reduce project costs, and facilitate later operation and maintenance.

[0036] Please refer to Figures 1 to 3 This application provides a novel water intake head structure, including a main frame, a gabion mesh bottom protection 4, a trash rack, and a water conveyance pipe 6. The main frame includes concrete cast-in-place piles 2 and concrete anchor blocks 5. There are multiple concrete cast-in-place piles 2, the lower part of which is buried in the riverbed. The concrete anchor blocks 5 are set on the riverbed. The gabion mesh bottom protection 4 is set on the riverbed inside the main frame. The trash rack includes a lateral trash rack 1 and a top trash rack 7. The lateral trash rack 1 is set on the side of the main frame, and the top trash rack 7 is set on the top of the main frame. The water conveyance pipe 6 is set on the concrete anchor blocks 5 and extends into the interior of the main frame for drawing water from the interior area of ​​the main frame.

[0037] The water intake head in this application is generally underwater, located in the main channel of the riverbed, to meet the requirements for water intake volume and quality. The main frame is composed of multiple concrete cast-in-place piles 2 and concrete anchors 5, with the lower part of the concrete cast-in-place piles 2 buried in the riverbed, the concrete anchors 5 set on the riverbed, and the gabion mesh bottom protection 4 located on the riverbed inside the main frame.

[0038] Since the lateral trash racks 1 on the sides and top of the main frame and the top trash rack 7 are water inlet systems, the flow rate is increased as much as possible while meeting the trash-blocking function, and the obstruction to the flood discharge of the river is reduced. The strength and rigidity meet the requirements of water flow impact and floating object collision.

[0039] This application applies to water intake structures of pumping stations in the water conservancy and hydropower engineering industry, especially for large-flow, large-diameter water intake heads installed on major rivers. This solution can effectively solve the problems of difficult construction and diversion, long construction period, significant impact on river flood control, high cost, and inconvenient operation and maintenance of traditional water intake heads.

[0040] It should be noted that the length and depth of the concrete pile 2 mentioned above are mainly determined based on the height of the water intake head, the depth of riverbed scouring, stress analysis and geological conditions, while the pile diameter is mainly determined based on the force transmission analysis of the trash rack, external load and structural layout requirements.

[0041] According to some embodiments of this application, the long axis of the concrete anchor 5 is arranged along the direction of water flow, and the concrete pile 2 is located on one side of the concrete anchor 5; the lateral trash rack 1 is arranged between two adjacent concrete piles 2 and between the concrete pile 2 and the concrete anchor 5.

[0042] Because the long axis of the concrete anchor 5 is arranged along the direction of water flow, its impact on river flood control is minimal. All concrete piles 2 are located on one side of the concrete anchor 5, and adjacent concrete piles 2 are connected by lateral trash racks 1. Furthermore, both ends of the concrete anchor 5 are also connected to the two adjacent concrete piles 2 by lateral trash racks 1. In other words, the concrete piles 2, the lateral trash racks 1, and the concrete anchor 5 together form the internal space of the main frame.

[0043] According to some embodiments of this application, the concrete piles 2 are arranged in two rows on one side of the concrete pier 5, and the concrete piles 2 in the two rows are arranged at intervals along the direction of water flow.

[0044] One row of concrete piles 2 are located near the concrete pier 5, and the distance between the two concrete piles 2 is greater than the length of the concrete pier 5. The other row has three concrete piles 2, which are arranged directly opposite the concrete pier 5. Specifically, the three concrete piles 2 are located at the middle and both ends of the concrete pier 5.

[0045] The vertical distance from the first row of concrete piles 2 closest to the concrete anchor 5 to the concrete anchor 5 is the first distance, and the vertical distance from the second row of concrete piles 2 to the concrete anchor 5 is the second distance, which is twice the first distance. With the five concrete piles 2 and the concrete anchor 5 distributed as described above, after the lateral trash rack 1 is installed, they form a rhomboid-like structure when viewed from above. Because the long axis of this structure is along the water flow direction and the water-facing surface forms a pointed shape, water flow resistance can be further reduced.

[0046] According to some embodiments of this application, a steel sleeve 3 is fitted onto the upper part of the concrete cast-in-place pile 2, and a connector for fixing the lateral trash rack 1 is provided on the outer wall of the steel sleeve 3. During installation, both ends of the lateral trash rack 1 can be fixedly connected to the connectors on two adjacent steel sleeves 3. Specifically, the connector can be a connecting plate welded to the outer wall of the steel sleeve 3, and the lateral trash rack 1 is bolted to the connecting plate.

[0047] It should be noted that there are six lateral trash racks 1 in this application, all of which are fixed. That is, the two sides of the lateral trash rack 1 are connected to the steel sleeve 3 of the cast-in-place pile (or the concrete pier 5). The strength and rigidity meet the requirements of water flow impact and floating object impact, and the structural dimensions and layout meet the requirements of lateral water intake and riverbed sand flushing.

[0048] According to some embodiments of this application, the height of the steel sleeve 3 of the cast-in-place pile is consistent with the height of the lateral trash rack 1. The steel sleeve 3 of the cast-in-place pile is located outside the concrete cast-in-place pile 2 and serves as a connection and force transmission component between the lateral trash rack 1 and the concrete cast-in-place pile 2. Its height is generally consistent with the height of the lateral trash rack 1. The inner diameter and wall thickness of the steel sleeve 3 of the cast-in-place pile are determined based on the diameter of the concrete cast-in-place pile 2 and the stress analysis of the lateral trash rack 1.

[0049] According to some embodiments of this application, the gabion mesh cage bottom protection 4 is a gabion structure. This gabion mesh cage bottom protection 4 serves as a foundation protection measure for the water intake head. The gabion structure is simple and quick to construct, highly adaptable to riverbed changes, and effectively reduces localized scouring of the water intake head foundation by the water flow. The thickness of the gabion is determined based on calculations of the riverbed scouring depth. Of course, other types of bottom protection, such as concrete or reinforced gabions, can also be used.

[0050] According to some embodiments of this application, the water transmission pipeline 6 is a double-pipe arrangement. The diameter of the water transmission pipeline 6 is determined by hydraulic calculation based on the water intake flow rate, the pipe spacing meets the requirements of water conservancy and hydropower industry standards, and the pipe wall thickness is determined by structural calculations. The water transmission pipeline 6 can be made of steel pipe or other pipe materials. When other pipe materials are used, the strength, rigidity, and durability of the pipeline must meet the requirements of structural calculations and water conservancy and hydropower industry standards.

[0051] The water supply pipeline 6 is supported on the concrete pier 5. The top and both ends of the concrete pier 5 are connected to the top trash rack 7 and the side trash rack 1, respectively. The structural dimensions of the concrete pier 5 are determined according to the layout of the water supply pipeline 6, structural calculations and scour depth. If the scour depth is deep, pile foundation can also be used.

[0052] According to some embodiments of this application, the top trash rack 7 is connected to the side trash rack 1 and the concrete pier 5. Specifically, the shape and size of the top trash rack 7 meet the connection requirements with the side trash rack 1 and the concrete pier 5, has a certain rigidity, and is generally a detachable connection structure to meet the requirements of later maintenance and hoisting.

[0053] Compared with traditional water intake heads, this application has the following advantages:

[0054] 1. Reduced construction difficulty: The new water intake head uses concrete cast-in-place piles 2 and concrete anchor blocks 5 as the main frame. Water intake is achieved through lateral trash racks 1 and top trash racks 7. The foundation is protected by flexible gabion cages. The requirements for diversion and drainage during the construction period are relatively low, and the requirements for foundation treatment are not high, thus reducing the difficulty of engineering construction.

[0055] 2. Shortened construction period: The new type of water intake head has a simple structure and does not require a complex cast-in-place reinforced concrete structure. The requirements for the structural foundation treatment are relatively low, which can shorten the construction period.

[0056] 3. Facilitates river flood discharge: The new type of water intake head is generally underwater, with a streamlined rhomboid arrangement. The water-facing side does not have a water-blocking concrete sidewall, but uses a permeable trash rack. The structure is simple, the construction speed is fast, and the river diversion period is short. Whether during the construction period or after completion, it occupies less of the river flood discharge section, which is beneficial to river flood discharge.

[0057] 4. Reduced project costs: The new type of water intake head has a simple structure and relatively low requirements for foundation treatment. It is easy to divert water, prevent seepage and drain the foundation pit. The construction period is short, which can reduce project costs and the cost of temporary engineering measures during the construction period.

[0058] 5. Easy to operate and maintain: This new type of water intake head adopts a trash rack structure that can pass through water, which can use the water flow of the main river to flush sand and reduce the accumulation of silt at the inlet of the water conveyance pipeline 6. In addition, the top trash rack 7 is generally a detachable structure, which can provide conditions for later inspection and hoisting, making it convenient for later operation and maintenance.

[0059] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A novel water intake head structure, characterized in that, The system includes a main frame, gabion mesh bottom protection, trash racks, and water conveyance pipelines. The main frame comprises multiple cast-in-place concrete piles and concrete anchor blocks. The lower parts of the cast-in-place concrete piles are buried in the riverbed, and the concrete anchor blocks are set on the riverbed. The gabion mesh bottom protection is set on the riverbed inside the main frame. The trash racks include lateral trash racks and top trash racks. The lateral trash racks are set on the sides of the main frame, and the top trash racks are set on the top of the main frame. The water conveyance pipeline is set on the concrete anchor blocks and extends into the interior of the main frame for drawing water from the interior area of ​​the main frame.

2. The novel water intake head structure according to claim 1, characterized in that, The long axis of the concrete anchor is arranged along the direction of water flow, and the concrete cast-in-place pile is located on one side of the concrete anchor; the lateral trash rack is set between two adjacent concrete cast-in-place piles and between the concrete cast-in-place pile and the concrete anchor.

3. The novel water intake head structure according to claim 2, characterized in that, The concrete piles are arranged in two rows on one side of the concrete anchor, and the concrete piles in the two rows are arranged at intervals along the direction of water flow.

4. The novel water intake head structure according to claim 3, characterized in that, One row of concrete piles is located near the concrete anchor pier, with two concrete piles spaced apart by a distance greater than the length of the concrete anchor pier. The other row has three concrete piles and is located directly opposite the concrete anchor pier.

5. The novel water intake head structure according to claim 1, characterized in that, The upper part of the concrete cast-in-place pile is fitted with a steel sleeve, and the outer wall of the steel sleeve is provided with a connector for fixing the lateral trash rack.

6. The novel water intake head structure according to claim 5, characterized in that, The height of the steel casing of the cast-in-place pile is the same as the height of the lateral trash rack.

7. The novel water intake head structure according to any one of claims 1-6, characterized in that, The bottom protection of the gabion mesh box is a gabion structure.

8. The novel water intake head structure according to any one of claims 1-6, characterized in that, The water supply pipeline is a dual-pipe arrangement.

9. The novel water intake head structure according to any one of claims 1-6, characterized in that, The top trash rack is connected to the side trash racks and concrete piers.

10. The novel water intake head structure according to claim 9, characterized in that, The top trash rack has a detachable connection structure.

Images