A pump station forebay inlet channel structure

Abstract

This utility model relates to the field of pump station flow channel technology, and more particularly to a flow channel structure for the inlet of a pump station forebay. It includes a box culvert body with a snap-fit ​​opening at the center of the top of the box culvert body for engaging the pump's bell mouth. A flow-turbulence component is installed inside the box culvert body. The flow-turbulence component includes a groove at the bottom of the inner wall of the box culvert body, and a base of a conical guide seat is connected to the box culvert body by a plurality of bolts evenly distributed along the bottom edge of the groove. The conical guide seat is tapered at the top and thickened at the bottom. Its structure is rationally designed and easy to install. By adding a flow-turbulence component to the flow channel of the box culvert, the downstream flow direction of the water is disrupted, preventing the formation of vortices in the flow channel and fundamentally avoiding intermittent vibration of the unit, allowing the unit to maintain normal operation and solving the problems existing in the prior art.

Description

Technical Field

[0001] This utility model relates to the field of pump station flow channel technology, and in particular to a pump station forebay inlet flow channel structure. Background Technology

[0002] Donghu Reservoir is a regulating reservoir for the Jidong Mingqu Canal. The inlet pumping station is equipped with four mixed-flow pump units and uses a box culvert-type intake channel. Since its operation in 2013, each unit has experienced intermittent vibration, which has seriously affected the safe operation of the units and directly resulted in a low net head of the pumping station, especially with more pronounced vibrations during high flow conditions. Research has revealed a complex flow pattern in the intake box culvert channel, including intermittent single attached bottom vortices, double attached bottom vortices, and multiple weak attached bottom vortices, with the vortex morphology constantly changing. This is a significant cause of the intermittent vibration of the units. Effectively eliminating the vortex phenomenon and ensuring the normal operation of the units is a crucial challenge facing the unit's operators. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a pump station forebay inlet channel structure. It has a reasonable structural design and is easy to install and construct. By adding a flow disturbance component in the culvert channel, the flow direction of the water is disrupted, thereby preventing the formation of vortices in the channel and fundamentally avoiding intermittent vibration of the unit, allowing the unit to maintain normal operation and solving the problems existing in the prior art.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A pump station forebay inlet channel structure includes a box culvert body. A snap-fit ​​opening for engaging the horn-shaped nozzle of a water pump is provided at the center of the top of the box culvert body. A flow-turbulence assembly is provided inside the box culvert body. The flow-turbulence assembly includes a groove located at the bottom of the inner wall of the box culvert body. The base of a conical flow guide seat is connected to the box culvert body by a plurality of bolts evenly arranged along the bottom edge of the groove. The conical flow guide seat is narrower at the top and wider at the bottom. Flow guide plates are symmetrically arranged on the inner walls of the box culvert body on both the front and rear sides of the conical flow guide seat. Both flow guide plates are located at the middle position of the conical flow guide seat.

[0005] Optionally, the guide plate includes a T-shaped steel plate, the horizontal section of which is closely attached to the inner wall of the box culvert body and is connected to the inner wall of the box culvert body by bolts, and the outer side of the T-shaped steel plate is formed by concrete pouring to form a stress layer.

[0006] Optionally, several hooks are provided on the side walls on both sides of the vertical section of the T-shaped steel plate.

[0007] Optionally, the cross-section of the guide plate is trapezoidal, and the width of the guide plate at the end near the inner wall of the box culvert body is greater than the width of its outer end.

[0008] Optionally, a sealing plug is provided on the base of the conical guide seat at each bolt position corresponding to the groove.

[0009] Optionally, the conical guide seat is hollow inside, and its base has an opening in the middle.

[0010] Optionally, a buffer mechanism is provided in the box culvert body on the water inlet side of the turbulence component. The buffer mechanism includes a cover opening set at the top of the box culvert body, a sealing cover plate fixedly snapped into the cover opening position of the box culvert body, and a number of fixing rods evenly arranged in the box culvert body corresponding to the sealing cover plate position. The lower end of each fixing rod is fixedly snapped into the bottom of the inner wall of the box culvert body, and the upper end is fixedly snapped into the bottom of the sealing cover plate. A number of horizontally arranged toothed rods are provided on the side wall of each fixing rod.

[0011] The advantages of this utility model using the above-mentioned technical solution are: reasonable structural design and convenient installation and construction. By adding a flow disturbance component in the flow channel of the box culvert, the flow direction of the water is disrupted, thereby preventing the formation of vortices in the flow channel and fundamentally avoiding intermittent vibration of the unit, allowing the unit to maintain normal operation. In addition, it can buffer the water flow in the box culvert, slow down its flow rate, and perform preliminary filtration of impurities in the water flow, intercepting large items and preventing them from being sucked into the unit, thereby improving the operation and service life of the equipment. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the box culvert body; Figure 3 for Figure 2 A schematic diagram of the side view structure; Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the middle AA direction; Figure 5 for Figure 4 Enlarged structural diagram of section B in the middle; Figure 6 This is a three-dimensional structural diagram of the fixed rod; Figure 7 A three-dimensional structural diagram of the sealing cover; Figure 8 This is a three-dimensional structural diagram of the conical flow guide seat; In the diagram, 1. Box culvert body; 2. Buckle; 3. Groove; 4. Conical guide seat; 5. Guide plate; 501. T-shaped steel plate; 502. Stress layer; 503. Hook; 6. Sealing plug; 7. Cover opening; 8. Sealing cover plate; 9. Fixing rod; 10. Toothed rod. Detailed Implementation

[0013] To clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific embodiments and in conjunction with the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application; however, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0014] Furthermore, it should be understood in the description of this application that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not 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 this application.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0016] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0017] like Figures 1-8As shown in this embodiment, a pump station forebay inlet channel structure includes a culvert body 1. A snap-fit ​​2 for engaging the pump horn is provided at the center of the top of the culvert body 1. A flow-disrupting component is provided inside the culvert body 1. The flow-disrupting component includes a groove 3 provided at the bottom of the inner wall of the culvert body 1. The base of a conical flow guide seat 4 is connected to the culvert body 1 by a number of bolts evenly provided at the bottom edge of the groove 3. The conical flow guide seat 4 is thinner at the top and thicker at the bottom. Flow guide plates 5 are symmetrically provided on the inner walls of the culvert body 1 on both the front and rear sides of the conical flow guide seat 4. Both flow guide plates 5 are located at the middle position of the conical flow guide seat 4.

[0018] Optionally, the guide plate 5 includes a T-shaped steel plate 501, the horizontal section of which is closely attached to the inner wall of the box culvert body 1 and is connected to the inner wall of the box culvert body 1 by bolts, and the outer side of the T-shaped steel plate 501 is formed by concrete pouring to form a stress layer 502.

[0019] Optionally, several hooks 503 are provided on the side walls of the vertical section of the T-shaped steel plate 501. The hooks 502 can increase the contact area with the concrete, thereby improving the stability of the connection.

[0020] Optionally, the guide plate 5 has a trapezoidal cross-section, with the width of the guide plate 5 at the end closest to the inner wall of the box culvert body 1 being greater than the width of its outer end. The inner end of the guide plate 5 can be fixed to the inner wall of the box culvert body 1 with a larger contact surface, and it can guide the water flow to reduce the impact of the water flow on the guide plate 5.

[0021] Optionally, sealing plugs 6 are provided on the base of the conical guide seat 4 corresponding to each bolt position in the groove 3. The sealing plugs 6 can play a sealing role, thereby reducing the corrosion of each bolt in the groove 3 by water.

[0022] Optionally, the conical guide seat 4 is hollow inside, with an opening in the middle of its base. The hollow design of the conical guide seat 4 helps to reduce its weight and facilitates construction and installation.

[0023] Optionally, a buffer mechanism is provided inside the box culvert body 1 on the water inlet side of the turbulence component. The buffer mechanism includes a cover opening 7 set at the top of the box culvert body 1, a sealing cover plate 8 fixedly snapped into the cover opening 7 of the box culvert body 1, and a plurality of fixing rods 9 evenly arranged inside the box culvert body 1 corresponding to the sealing cover plate 8. The lower end of each fixing rod 9 is fixedly snapped into the bottom of the inner wall of the box culvert body 1, and its upper end is fixedly snapped into the bottom of the sealing cover plate 8. A plurality of horizontally arranged toothed rods 10 are provided on the side wall of each fixing rod 9.

[0024] In operation, water flows through the box culvert body 1. Upon passing through the turbulence-inducing components, the fixed rods 9 slow the water flow, thus reducing its velocity. The toothed rods 10 on each fixed rod 9 filter large debris, preventing it from being sucked into the pump unit and extending its service life. When the water reaches the conical guide seat 4, it is dispersed to the front and rear sides, further turbulent to prevent vortex formation. The water is then gathered above the conical guide seat 4 by the guide plates 5 on both sides. The pump nozzle above the conical guide seat 4 then draws the water into the pump. Throughout this process, the pump does not vibrate. Its structure is rationally designed and easy to install. By adding turbulence-inducing components to the box culvert's flow channel, the flow direction is disrupted, preventing vortex formation and fundamentally avoiding intermittent vibration of the unit, allowing it to maintain normal operation and solving problems existing in the prior art.

[0025] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. For those skilled in the art, any alternative improvements or transformations made to the implementation of this utility model fall within the protection scope of this utility model.

[0026] Any aspects of this utility model not described in detail are known to those skilled in the art.

Claims

1. A structure for the inlet flow channel of a pump station forebay, characterized in that, The culvert includes a box culvert body, with a snap-fit ​​opening at the center of the top of the box culvert body for engaging the horn of a water pump. A flow-dispersing component is provided inside the box culvert body, the flow-dispersing component including a groove at the bottom of the inner wall of the box culvert body, and a base of a conical flow guide seat connected to the box culvert body by a number of bolts evenly arranged at the bottom edge of the groove. The conical flow guide seat is thinner at the top and thicker at the bottom. Flow guide plates are symmetrically arranged on the inner wall of the box culvert body on both the front and rear sides of the conical flow guide seat, and both flow guide plates are located in the middle position of the conical flow guide seat.

2. The inlet channel structure of a pump station forebay according to claim 1, characterized in that, The guide plate includes a T-shaped steel plate. The horizontal section of the T-shaped steel plate is closely attached to the inner wall of the box culvert body and is connected to the inner wall of the box culvert body by bolts. The outer side of the T-shaped steel plate is formed by concrete pouring to form a stress layer.

3. The inlet channel structure of a pump station forebay according to claim 2, characterized in that, Several hooks are provided on the side walls on both sides of the vertical section of the T-shaped steel plate.

4. The inlet channel structure of a pump station forebay according to claim 2, characterized in that, The cross-section of the guide plate is trapezoidal, and the width of the guide plate at the end near the inner wall of the box culvert is greater than the width of its outer end.

5. The inlet channel structure of a pump station forebay according to claim 1, characterized in that, A sealing plug is provided on the base of the tapered guide seat at each bolt position corresponding to the groove.

6. The inlet channel structure of a pump station forebay according to claim 1, characterized in that, The conical guide seat is hollow inside, and its base has an opening in the middle.

7. The inlet channel structure of a pump station forebay according to claim 1, characterized in that, A buffer mechanism is provided in the box culvert body on the water inlet side of the turbulence component. The buffer mechanism includes a cover opening set at the top of the box culvert body. A sealing cover plate is fixedly snapped into the cover opening position of the box culvert body. Several fixing rods are evenly arranged in the box culvert body corresponding to the sealing cover plate position. The lower end of each fixing rod is fixedly snapped into the bottom of the inner wall of the box culvert body, and the upper end is fixedly snapped into the bottom of the sealing cover plate. Several horizontally arranged toothed rods are provided on the side wall of each fixing rod.

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