Large riverbed type water taking head top surface trash rack

Abstract

The utility model discloses a large riverbed type water taking head top surface trash rack which comprises trash rack frames, trash rack pieces, anchoring pieces and internode connecting pieces, the trash rack pieces are arranged in the trash rack frames, the trash rack frames are connected through the internode connecting pieces, the trash rack frames are connected with a wall face on the side of a water taking head through the anchoring pieces, and the anchoring pieces are connected with the wall face through the internode connecting pieces. The trash rack frame comprises edge beam wing plates, edge beam webs, main beam wing plates, main beam webs, secondary beam wing plates and secondary beam webs, the main beam wing plates and the main beam webs are located in the middles of the trash rack pieces, the edge beam wing plates and the edge beam webs are located at the two ends of the main beam wing plates and the main beam webs, and the secondary beam wing plates and the secondary beam webs are located in the middles of the main beam wing plates and the main beam webs. The trash rack piece comprises grid bar partition plates and grid bars, the grid bar partition plates and the grid bars are welded to the main beam wing plates of the frame, and a plurality of grid bar partition plates are arranged in the grid bars. According to the large-span trash rack structure, the trash rack meets the requirement for the flow speed of passing the rack, large-flow passing can be achieved, and the large-span trash rack structure is durable, scour-proof, detachable and high in adaptability.

Description

Technical Field

[0001] The utility model relates to water conservancy and hydropower engineering, in particular to a large riverbed type water intake head top surface trash rack. Background Art

[0002] As the main structure of large-scale water supply projects, the water intake head has high safety and large flow rate. It is affected by the river bank terrain and river flow changes. In order to ensure normal water intake even under low water conditions, the water intake head is extended into the deep channel of the water intake river. Because the water flow is turbulent in the deep channel, there is a risk of siltation or erosion. At the same time, due to the design requirements of the trash rack, the flow rate through the rack is low. Under the same flow conditions, the water inlet area must be expanded to adjust the flow rate. It is difficult to arrange large-scale trash racks.

[0003] The riverbed water intake head trash rack is generally arranged on the top and side surfaces and needs to meet the following requirements:

[0004] 1) The spacing between the bars is reasonable, which can intercept dirt and is not easy to be blocked;

[0005] 2) The structural strength meets the pressure difference load between the inside and outside;

[0006] 3) The flow velocity through the gate should be less than 1.2m / s;

[0007] 4) No suction effect on fish etc.;

[0008] 5) The trash rack must be firmly fixed on the water intake head to prevent it from being washed away by floods.

[0009] In view of the above requirements, it is necessary to choose a large riverbed water intake head trash rack that is suitable for large rivers, rapids in mountainous areas.

[0010] Based on the above situation, the utility model proposes a large-scale riverbed type water intake head top surface trash rack to effectively solve the above problems. Utility Model Content

[0011] In order to solve the problems existing in the background technology, the utility model provides a large riverbed type water intake head top surface trash rack.

[0012] The utility model adopts the following technical solutions:

[0013] A large riverbed type trash rack on the top surface of a water intake head comprises a trash rack frame, trash rack plates, anchors and inter-segment connectors. Trash rack plates are arranged in the trash rack frame. The trash rack frames are connected by inter-segment connectors. The trash rack frame is connected to the wall surface on the side of the water intake head by multiple anchors. The trash rack frame comprises side beam wing plates, side beam web plates, main beam wing plates, main beam web plates, secondary beam wing plates and secondary beam web plates. The main beam wing plates and main beam web plates are located in the middle of the trash rack plates. The side beam wing plates and side beam web plates are located at both ends of the main beam wing plates and main beam web plates. The secondary beam wing plates and secondary beam web plates are perpendicular to the main beam wing plates and main beam web plates, and are evenly distributed at the points where the main beam is divided into three equal parts. The trash rack plates comprise bar partitions and bars. The bar partitions and bars are connected to the main beam wing plates of the frame. A plurality of bar partitions are arranged in the bars. The utility model realizes that the trash rack meets the requirements of the flow velocity passing through the rack and can pass a large flow rate. The utility model is a large-span trash rack structure with strong adaptability, such as durability, anti-impact, and detachability.

[0014] Furthermore, the trash rack frame also includes a rib plate, a connecting plate and a baffle plate. The rib plate is welded to both sides of the web at the end of the secondary beam and is parallel to the secondary beam wing plate. The rib plate is welded to the web of the side beam and is coaxial with the web of the main beam. The baffle plate is located at the end of the secondary beam wing plate and is welded to the secondary beam wing plate. The connecting plate is located at the side beam wing plate and is welded to the rib plate. The connecting plate is used to connect to the trash rack frame.

[0015] Furthermore, the anchor comprises a phase embedded plate, shear plate nuts, shear plate bolts, a pad and a shear plate. The pad is perforated and plugged with bolts, which are ground after welding and welded to the phase embedded plate at the periphery. The bolts are passed through the reserved holes in the main beam connecting plate and are firmly fixed with nuts. A shear plate is arranged on the downstream side of the pad, and the periphery of the shear plate is fully welded to the phase embedded plate.

[0016] Furthermore, the intersection connecting parts include a first intersection connecting plate, a second intersection connecting plate, bolts, and nuts. The first intersection connecting plate and the second intersection connecting plate are connected by bolts and nuts. The first intersection connecting plate and the second intersection connecting plate clamp adjacent trash rack frame side beam wing plates for pre-tightening connection.

[0017] Furthermore, the top trash rack is provided with a first section area, a second section area and a third section area, the first section area is arranged at the center of the whole, the second section area is arranged at both sides of the first section area, and the third section area is arranged at both sides outside the second section area.

[0018] Furthermore, the trash rack frame and trash rack grille arranged in the first section area are the first section head trash rack frame and the first section head trash rack grille, the trash rack frame and trash rack grille arranged in the second section area are the second section head trash rack frame and the second section head trash rack grille, and the trash rack frame and trash rack grille arranged in the third section area are the third section head trash rack frame and the third section head trash rack grille.

[0019] Furthermore, the bar thickness is 10mm, the height is 90mm, and the spacing between the bars is 10cm. All bars are welded to the frame main beam wing plate, and the weld height is 6mm continuous double-sided foot weld. The bar partition adopts three-sided continuous fillet weld, and the weld foot height is 6mm.

[0020] Furthermore, the shear plate is arranged on the downstream side of the pad, all screw holes are drilled with corresponding components, and the contact surface between the shear plate and the pad and the flange plate of the trash rack frame is grooved with 16×45°.

[0021] Furthermore, the first-phase embedded plate at the bottom of the trash rack on the top surface of the water intake head is firmly connected to the concrete in the box body.

[0022] The utility model provides a large-scale riverbed type water intake head top surface trash rack: the trash rack can meet the requirements of the flow rate passing through the rack and can pass a large flow rate. It is a durable, anti-impact, detachable and highly adaptable large-span trash rack structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the plane structure of the buried plate in the first phase of the utility model;

[0024] Figure 2 This is a schematic diagram of the planar structure of the utility model;

[0025] Figure 3 This is a structural diagram of the trash rack frame of the utility model;

[0026] Figure 4 for Figure 3 Sectional view of the middle AA plane;

[0027] Figure 5 for Figure 3 Middle BB plane section view;

[0028] Figure 6 for Figure 5 Side view of

[0029] Figure 7 Take the head trash rack grid structure diagram for the first section;

[0030] Figure 8 for Figure 7 Sectional view of the middle AA plane;

[0031] Fig. 9 for Figure 7 Middle BB plane section view;

[0032] Fig.10 It is the structural diagram of the internode connector;

[0033] Fig.11 for Fig.10 Sectional view of the middle AA plane;

[0034] Fig.12 This is the structural diagram of the anchor;

[0035] Fig.13 for Fig.12 Sectional view of the middle AA plane;

[0036] Fig.14 for Fig.12 Middle BB plane section view;

[0037] Fig.15 Schematic diagram of stud hole plug welding.

[0038] The numbers marked in the figure are as follows: 1-the first section takes the head trash rack frame, 2-the first section takes the head trash rack grid, 3-the second section takes the head trash rack frame, 4-the second section takes the head trash rack grid, 5-the third section takes the head trash rack frame, 6-the third section takes the head trash rack grid, 7-the first section area, 8-the second section area, 9-the third section area, 10-the first phase embedded plate, 11-the side beam wing plate, 12-the side Beam web, 13-main beam web, 14-main beam wing, 15-secondary beam wing, 16-secondary beam web, 17-rib plate, 18-connecting plate, 19-baffle, 20-grid, 21-grid partition, 22-bolt, 23-nut, 24-inter-section connector, 25-first inter-section connecting plate, 26-second inter-section connecting plate, 27-anchor, 28-shear plate, 29-nut, 30-bolt, 31-shim. DETAILED DESCRIPTION

[0039] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the utility model, unless otherwise specified, "multiple" means two or more, unless otherwise clearly defined.

[0041] See attached Figure 1-15 A large riverbed type water intake head top surface trash rack, comprising a trash rack frame, trash rack grid pieces, anchors 27 and inter-section connectors 24, trash rack grid pieces are arranged in the trash rack frame, trash rack frames are connected by inter-section connectors 24, the trash rack frame is connected to the wall surface on the side of the water intake head by multiple anchors 27, the trash rack frame comprises a side beam wing plate 11, a side beam web plate 12, a main beam wing plate 14, a main beam web plate 13, a secondary beam wing The plate 15, the secondary beam web 16, the main beam wing plate 14, and the main beam web 13 are located in the middle of the trash rack grille, the side beam wing plate 11 and the side beam web 12 are located at both ends of the main beam wing plate 14 and the main beam web 13, the secondary beam wing plate 15 and the secondary beam web 16 are located in the middle of the main beam wing plate 14 and the main beam web 13, and the trash rack grille includes a bar partition 21 and bars, and the bars are connected to the main beam wing plate 13 of the frame, and a plurality of bar partitions 21 are arranged in the bars.

[0042] like Figure 3-6 As shown, the trash rack frame also includes a rib plate 17, a connecting plate 18 and a baffle plate 19. The rib plate 17 is welded to both sides of the web 16 at the end of the secondary beam, parallel to the secondary beam wing plate 15, the rib plate 17 is welded to the side beam web 12, and is coaxial with the main beam web 13. The baffle plate 19 is located at the end of the secondary beam wing plate 15 and welded to the secondary beam wing plate 15. The connecting plate 18 is located on the side beam wing plate 14 and welded to the rib plate 17. The connecting plate 18 is used to connect with the trash rack frame and the anchor 27.

[0043] like Figure 1 , 12-15, the anchor 27 includes a first-phase embedded plate 10, a nut 29, a bolt 30, a pad 31 and a shear plate 28. The pad 31 is perforated with a plug-welded bolt 30, which is ground flat after welding and welded to the first-phase embedded plate 27 at the periphery. The main beam connecting plate 18 has a reserved hole through which the bolt 30 passes and is fixed with a nut 29. The shear plate 28 is arranged on the downstream side of the pad 31, and the periphery of the shear plate 28 is fully welded to the first-phase embedded plate 10.

[0044] like Figure 10-11 As shown, the inter-section connecting member 24 includes a first inter-section connecting plate 25, a second inter-section connecting plate 26, bolts 23, and nuts 22. The first inter-section connecting plate 25 and the second inter-section connecting plate 26 are connected by bolts 23 and nuts 22. The first inter-section connecting plate 25 and the second inter-section connecting plate 26 clamp the adjacent trash rack frame side beam wing plate 14 for pre-tightening connection. The inter-section connecting plate 18 is a Φ26mm through hole with a hole roughness of 12.5.

[0045] like Figure 2 As shown, the top trash rack is provided with a first section area 7, a second section area 8 and a third section area 9, wherein the first section area 7 is arranged at the center of the whole, the second section area 8 is arranged at both sides of the first section area 7, the third section area 9 is arranged at both sides outside the second section area 8, and has two grille sheets spanning the partition wall in the box body.

[0046] The gap between the bars 20 of the node area and the node area cannot exceed the spacing of the bars 20 of a single node.

[0047] The trash rack frame and trash rack grille arranged in the first section area 7 are the first section head trash rack frame 1 and the first section head trash rack grille 2, the trash rack frame and trash rack grille arranged in the second section area 8 are the second section head trash rack frame 3 and the second section head trash rack grille 4, and the trash rack frame and trash rack grille arranged in the third section area 9 are the third section head trash rack frame 5 and the third section head trash rack grille 6.

[0048] The bars 20 are 10mm thick, 90mm high, and 10cm apart. All bars 20 are welded to the frame beam wing plate 13, and the weld height is 6mm continuous double-sided foot weld. The bar partition 21 adopts three-sided continuous fillet welds with a weld foot height of 6mm.

[0049] The shear plate is arranged on the downstream side of the pad, all screw holes are drilled with corresponding components, and the contact surface between the shear plate and the pad and the flange plate of the trash rack frame is grooved with 16×45°.

[0050] The bottom of the trash rack on the top surface of the water intake head and the concrete inside the box should be dense and without gaps. The concrete surface inside the steel jacket box should be flush with the buried plate surface of the trash rack, and the flatness should not be greater than 3mm.

[0051] The trash rack structure is divided into sections and manufactured in different specifications according to the size of the water inlet tank of the large water intake head. In order to prevent the trash rack from being destroyed by the rapids, the height of the side wall of the water intake head is lowered, and the height of the end wall remains unchanged, forming a groove on the top surface of the water intake head, and the trash rack structure is filled in the groove to ensure the stability of the trash rack structure and prevent erosion.

[0052] The trash rack should be assembled as a whole before leaving the factory. The allowable deviation of the assembly should comply with the requirements of the drawings and specifications. After passing the inspection, the assembly should be clearly marked and numbered, and a reliable positioning device should be installed.

[0053] The buried plates of the steel casing should be in the same plane, and the difference between the highest point and the lowest point of the working surface should not exceed 2mm. In order to prevent deformation during concrete pouring, reinforcement should be carried out.

[0054] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A large riverbed type water intake head top surface trash rack, characterized in that: The utility model comprises a trash rack frame, trash rack pieces, anchors and inter-segment connectors, wherein trash rack pieces are arranged in the trash rack frame, and the trash rack frames are connected by inter-segment connectors, and the trash rack frame is connected to the wall surface on the water intake head side by a plurality of anchors, and the trash rack frame comprises side beam wing plates, side beam web plates, main beam wing plates, main beam web plates, secondary beam wing plates and secondary beam web plates, wherein the main beam wing plates and main beam web plates are located in the middle of the trash rack pieces, the side beam wing plates and side beam web plates are located at the two ends of the main beam wing plates and main beam web plates, the secondary beam wing plates and secondary beam web plates are located at the two ends of the side surfaces of the main beam wing plates and main beam web plates, and the trash rack pieces comprise bar partitions and bars, wherein the bars are connected to the main beam wing plates of the frame, and a plurality of bar partitions are arranged in the bars.

2. A large riverbed type water intake head top surface trash rack according to claim 1, characterized in that: The trash rack frame also includes a rib plate, a connecting plate and a baffle plate, the rib plate is connected to the middle part of the main beam wing plate, the baffle plate is located at the end of the secondary beam wing plate and fixed on the secondary beam wing plate, the connecting plate is located on the secondary beam web and connected to the rib plate, and the connecting plate is used to connect to the trash rack frame.

3. A large riverbed type water intake head top surface trash rack according to claim 1, characterized in that: The anchoring member includes a first-phase embedded plate, a shear plate nut, a shear plate bolt, a pad and a shear plate. The shear plate is connected to the first-phase embedded plate through the shear plate nut and the shear plate bolt. The first-phase embedded plate is connected to the wall on the water intake head side, and the pad is arranged on the wall connection side.

4. A large riverbed type water intake head top surface trash rack according to claim 1, characterized in that: The inter-section connecting parts include a first inter-section connecting plate, a second inter-section connecting plate, bolts, and nuts. The first inter-section connecting plate and the second inter-section connecting plate are connected by bolts and nuts. The first inter-section connecting plate and the second inter-section connecting plate clamp adjacent trash rack frames for connection.

5. A large riverbed type water intake head top surface trash rack according to claim 1, characterized in that: The top trash rack is provided with a first section area, a second section area and a third section area, wherein the first section area is arranged at the center of the whole, the second section area is arranged at both sides of the first section area, and the third section area is arranged at both sides outside the second section area.

6. A large riverbed type water intake head top surface trash rack according to claim 5, characterized in that: The trash rack frame and trash rack grille arranged in the first section area are the first section head trash rack frame and the first section head trash rack grille, the trash rack frame and trash rack grille arranged in the second section area are the second section head trash rack frame and the second section head trash rack grille, and the trash rack frame and trash rack grille arranged in the third section area are the third section head trash rack frame and the third section head trash rack grille.

7. A large riverbed type water intake head top surface trash rack according to claim 1, characterized in that: The bars are 10 mm thick, 90 mm high, and 10 cm apart.

8. A large riverbed type water intake head top surface trash rack according to claim 3, characterized in that: The shear plate is arranged on the downstream side of the pad, all screw holes are drilled with corresponding components, and the contact surface between the shear plate and the pad and the wing extension plate of the trash rack frame is grooved with 16×45°.

9. A large riverbed type water intake head top surface trash rack according to claim 1, characterized in that: The bottom of the trash rack on the top surface of the water intake head and the concrete inside the box are compacted.

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