CN206667363U - A kind of submergence type culvert water inlet structure - Google Patents

Abstract

A kind of submergence type culvert water inlet structure, belong to Hydraulic and Hydro-Power Engineering and water supply and sewage field of engineering technology, it is made up of critical pieces such as irrigation channel section, joining section, forebay, submergence type culvert, trash rack, bulkhead gate, intake pool, water pump, outlet pipes, suitable for the very big pumping plant of intake pool range of stage, on the basis of water feeding of water pump condition is ensured, using submergence type culvert water inlet structure design, trash rack can be greatly lowered and block dirty height and bulkhead gate water retaining height, save equipment investment and pumping plant construction cost.

Description

A submerged culvert water intake structure

technical field

The utility model belongs to the technical field of water conservancy and hydropower and water supply and drainage engineering equipment, and relates to a pumping station water inlet structure, in particular to a submerged culvert water inlet structure.

Background technique

Due to the uneven distribution of water resources in time and space, a large number of water conservancy projects need to be built to carry out irrigation, drainage, waterlogging and water transfer across river basins to ensure the normal progress of industry, agriculture and people's lives. With the continuous advancement of the urbanization process and the continuous improvement of living standards, people have put forward higher and higher requirements for water resources and the environment, and the construction of urban flood control pumping stations and running water projects is in full swing. In many areas of our country, the water level of the river course varies greatly, which makes the height of the trash stop very large, the height of the flood protection increases, the operation safety of the pumping station is threatened, and the investment in project construction rises in a straight line. The problem faced by the water inlet design of the pump station is how to ensure the cavitation performance of the pump when the water inlet pool is at a low water level, and how to save the investment of the pump station when the water inlet pool is at a high water level, and ensure the safety and operation of the pump station. Easy to manage.

Utility model content

The purpose of this utility model is to propose a submerged culvert water inlet structure for the above-mentioned problems such as the large fluctuation of the water level of the inlet pool, which leads to a large height of the trash stop, an increase of the flood retaining height, and threats to the operation safety of the pumping station. On the basis of the water inlet conditions of the water pump, the height of the trash rack and the water retaining height of the maintenance gate can be greatly reduced, which can effectively save the manufacturing cost of the trash rack and the maintenance gate; the height of the trash rack and the maintenance gate is reduced, It also provides favorable conditions for reducing the height of the pumping station, thereby laying the foundation for comprehensively saving the construction investment of the pumping station, and facilitating the operation, management and maintenance of the pumping station.

The technical scheme of the utility model: a submerged culvert water inlet structure, characterized in that: the submerged culvert water inlet structure is sequentially composed of a river diversion section, a connecting section, a forebay and an inlet pool; the connecting section It is composed of the side wall of the connecting section and the floor of the connecting section. The floor of the connecting section is composed of a front section and a rear section. The front section is arranged horizontally and is at the same elevation as the bottom of the river diversion section, and the rear section is in the shape of a downward slope. The front pool is composed of the front pool side wall and the front pool floor, the side walls of the front pool are evenly distributed with drainage holes, the bottom of the front pool floor is connected with the rear section of the connecting section floor and then along the direction of water flow Gradually lower, the front pool floor is evenly distributed with water holes, and a reverse filter layer is provided under the front pool floor; the water inlet pool is composed of side piers, middle piers, the back wall of the water outlet pool, the first foundation beam, the second The rectangular structure formed by two foundation beams and the bottom plate of the water inlet pool, a culvert top plate is arranged under the first foundation beam, and the culvert top plate forms a culvert with the bottom plate of the water inlet pool, side piers and middle piers, and the culvert top plate is composed of arc segments and The height of the circular arc segment decreases gradually with the direction of water flow, the linear segment is parallel to the bottom plate of the water inlet pool, and an inspection gate is provided between the circular arc segment and the straight line segment, and the inspection gate There is a maintenance gate groove above, and a horizontal water stop is provided between the forebay floor, the connecting section floor and the bottom of the water inlet pool, and a trash rack is set on the bottom of the water inlet pool at the entrance of the culvert. There is a trash rack groove on the top of the trash grid, and an inspection platform is provided on the second foundation beam. The water body is sucked from the bell mouth through the inlet pool, and after obtaining energy from the pump section, it flows along the pump pipe, inner bend pipe, and expander pipe. , gate valve, and outlet pipe flow out.

The trash rack and the bottom plate of the water inlet pool form an installation angle, the included angle ranges from 75° to 80°, and the trash rack is hoisted and installed along the trash rack groove.

The side wall of the front pool is arranged vertically, and drainage holes are evenly distributed on the surface of the wall. The diameter of the drainage holes is 100mm, and the distance between the drainage holes is 2.0-3.0m.

The side wall of the connecting section is a twisted surface structure, respectively connecting the river diversion section and the forebay section. Drainage holes are evenly distributed on the wall surface. The diameter of the drainage holes is 100mm, and the distance between the drainage holes is 2.0-3.0m.

Water emitting holes are arranged on the front pool floor, the diameter of the water emitting holes is 50mm, and the distance between the water emitting holes is 1.2-1.5m.

The connecting section floor is composed of a front section and a back section. The front section is arranged horizontally and is at the same elevation as the bottom of the diversion river; the back section is connected to the front pool floor and slopes downwards with the same slope as the front pool floor.

The first foundation beam (9) and the second foundation beam (16) are reinforced concrete structures, forming an integral rigid structure with the culvert roof (15), side piers (28) and middle piers (29).

The beneficial effects of the utility model are: a submerged culvert water inlet structure proposed by the utility model has a novel structure and a reasonable layout. , Inlet pool, water pump, water outlet pipe and other components, adopting submerged culvert water inlet structure, on the basis of ensuring the water inlet conditions of the water pump, can greatly reduce the height of the trash rack and the water retaining height of the maintenance gate, which can effectively Save the manufacturing cost of the trash rack and reduce the manufacturing cost of the maintenance gate; the reduction of the height of the trash rack and the maintenance gate also provides favorable conditions for reducing the height of the pump room, thus laying the foundation for the overall saving of pump station construction investment and facilitating the operation of the pump station , management and maintenance.

Description of drawings

Figure 1 is a schematic diagram of the overall layout of the utility model.

Fig. 2 is a schematic diagram of a full cross-sectional structure along the direction A-A in Fig. 1 .

In the figure: river diversion section 1, connecting section floor 2, drainage hole 3, connecting section side wall 4, front pool side wall 5, front pool floor 6, water emitting hole 7, reverse filter layer 8, first foundation beam 9, barrier Trash grid groove 10, trash rack 11, horizontal water stop 12, inspection gate 13, inspection door groove 14, culvert roof 15, second foundation beam 16, inspection platform 17, pump pipe 18, pump section 19, bell mouth 20 , water inlet pool bottom plate 21, inner elbow 22, gradually expanding pipe 23, gate valve 24, water outlet pipe 25, pump house back wall foundation 26, water outlet pool back wall 27, side pier 28, middle pier 29.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1-2, a submerged culvert water intake structure, the submerged culvert water intake structure is sequentially composed of a river diversion section 1, a connecting section, a forebay and an inlet pool; the connecting section is composed of a connecting section side wall 4 It is composed of the connecting section floor 2. The connecting section floor 2 is composed of the front section and the rear section. The front section is arranged horizontally and is at the same elevation as the bottom of the river diversion section 1, and the rear section is in the shape of a downward slope; the front pool is composed of the front pool side wall 5 and the front pool. The front pool floor 6 is composed of drain holes 3 evenly distributed on the front pool side wall 5, the bottom of the front pool floor 6 is connected with the rear section of the connecting section floor 2 and then gradually lowers along the direction of water flow, and the front pool floor 6 is evenly equipped with drain holes. The water hole 7 is provided with a reverse filter layer 8 under the front pool floor 6; the water inlet pool is composed of side piers 28, middle piers 29, back wall 27 of the water outlet pool, first foundation beam 9, second foundation beam 16 and water inlet pool bottom plate 21 A rectangular structure is formed. The culvert roof 15 is arranged under the first foundation beam 9. The culvert roof 15 forms a culvert with the bottom plate 21 of the water inlet pool, side piers 29 and middle piers 29. The culvert roof 15 is composed of a circular arc segment and a straight line segment. The height of the section gradually decreases with the direction of water flow. The straight section is parallel to the bottom plate 21 of the inlet pool. There is an inspection gate 13 between the arc section and the straight section. An inspection gate groove 14 is arranged above the inspection gate 13. The front pool floor 6 and the connecting section A horizontal water stop 12 is provided between the floor 2 and the bottom plate 21 of the water intake tank. A trash rack 11 is provided on the bottom plate 21 of the water intake tank at the entrance of the culvert, and a trash rack groove 10 is provided above the trash rack 11. The second foundation beam 16 is provided with an inspection platform 17. The water body is sucked from the bell mouth 20 through the water inlet pool. flow out.

As shown in Figure 1-2, a submerged culvert water intake structure, the trash rack 11 forms an installation angle with the bottom plate 21 of the water intake tank, and the included angle ranges from 75° to 80°, and the trash rack 11 is installed along the trash rack The tank 10 is hoisted and installed; the side wall 5 of the front pool is vertically arranged, and the drainage holes 3 are evenly distributed on the wall surface. 4 is a twisted surface structure, which connects the diversion section 1 and the front pool section respectively, and the drainage holes 3 are evenly distributed on the wall surface. The floor 6 is provided with a water emitting hole 7, the diameter of the water emitting hole 7 is 50mm, and the distance between the water emitting hole 7 and the water emitting hole 7 is 1.2-1.5m; Arranged at the same elevation as the bottom of the diversion river; the rear section is connected with the front pool floor 6, and slopes downward in a slope shape, and the slope is the same as that of the front pool floor 6; the first foundation beam 9 and the second foundation beam 16 are reinforced concrete structures, It forms an integral rigid structure with the culvert roof 15, side piers 28, and middle piers 29.

The utility model adopts a submerged culvert water inlet structure, which can greatly reduce the trash rack height and the water retention height of the inspection gate on the basis of ensuring the water inlet conditions of the water pump, and can effectively save the manufacturing cost of the trash rack and reduce maintenance The gate manufacturing cost; the reduction of the height of the trash rack and the maintenance gate also provides favorable conditions for reducing the height of the pump room, thus laying the foundation for the overall saving of pump station construction investment and facilitating the operation, management and maintenance of the pump station.

Claims (7)

1. A submerged culvert water inlet structure is characterized in that: the submerged culvert water inlet structure is successively connected by a diversion section (1), a connecting section, a forebay and an inlet pool; section side wall (4) and connecting section floor (2), and the connecting section floor (2) is composed of a front section and a rear section, the front section is arranged horizontally and is at the same elevation as the bottom of the river diversion section (1), so The rear section is in the shape of a downward slope; the front pool is composed of the front pool side wall (5) and the front pool floor (6), and the front pool side wall (5) is evenly equipped with drainage holes (3) , the bottom of the front pool floor (6) is connected to the rear section of the connecting section floor (2) and then gradually lowers along the water flow direction, and the front pool floor (6) is evenly distributed with water emitting holes (7), The bottom of the front pool floor (6) is provided with an anti-filter layer (8); ), the second foundation beam (16) and the rectangular structure formed by the bottom plate of the water inlet (21), the culvert roof (15) is provided below the first foundation beam (9), and the culvert roof (15) and the inlet The pool bottom plate (21) constitutes a culvert, and the culvert top plate (15) is composed of a circular arc segment and a straight line segment. Parallel, an inspection gate (13) is provided between the circular arc section and the straight line section, an inspection gate slot (14) is provided above the inspection gate (13), and the forebay floor (6), connecting section A horizontal water stop (12) is provided between the floor (2) and the bottom plate of the water inlet (21), and a trash rack (11) is arranged on the bottom plate (21) of the water inlet at the entrance of the culvert. A trash rack groove (10) is provided above the trash rack (11), and an inspection platform (17) is provided on the second foundation beam (16). (19) After obtaining the energy, it flows out along the pump pipe (18), the inner elbow (22), the expanding pipe (23), the gate valve (24), and the water outlet pipe (25). 2. The water inlet structure of a submerged culvert according to claim 1, characterized in that: the trash rack (11) forms an installation angle with the bottom plate (21) of the water inlet tank, and the angle ranges from 75° to 80 °, the trash rack (11) is lifted and installed along the trash rack groove (10). 3. A kind of submerged culvert water intake structure according to claim 1, characterized in that: the side wall (5) of the forebay is vertically arranged, and the drainage holes (3) are evenly distributed on the wall surface, and the drainage holes (3) ) is 100mm in diameter, and the distance between the drainage holes (3) and the drainage holes (3) is 2.0-3.0m. 4. A submerged culvert water intake structure according to claim 1, characterized in that: the side wall (4) of the connecting section is a twisted surface structure, which respectively connects the river diversion section (1) and the forebay section, and the wall Drainage holes (3) are evenly distributed on the surface, the diameter of the drainage holes (3) is 100mm, and the distance between the drainage holes (3) and the drainage holes (3) is 2.0-3.0m. 5. The water intake structure of a submerged culvert according to claim 1, characterized in that: the forebay floor (6) is provided with a water emitting hole (7), and the diameter of the water emitting hole (7) is 50mm , The distance between the water emitting hole (7) and the water emitting hole (7) is 1.2-1.5m. 6. A submerged culvert water inlet structure according to claim 1, characterized in that: the connecting section floor (2) is composed of a front section and a rear section, the front section is arranged horizontally, and is at the same elevation as the bottom of the diversion river; The rear section is connected with the front pool floor (6), and slopes downwards, and the slope is the same as that of the front pool floor (6). 7. A kind of submerged culvert water intake structure according to claim 1, characterized in that: the first foundation beam (9) and the second foundation beam (16) are reinforced concrete structures, and the culvert roof (15 ), side piers (28), and middle piers (29) form an integral rigid structure.