Structure of bank-type multi-water-level combined water intake pump house and water intake method

Abstract

The present invention discloses a structure of a riverside multi-water-level combined water intake pump house and a water intake method. It includes a water intake forebay; an outlet back pool arranged at the rear end of the water intake forebay; a pump house arranged between the water intake forebay and the outlet back pool; a lower-layer gravity flow channel arranged between the water intake forebay and the outlet back pool; and an upper-layer energy dissipation flow channel arranged between the water intake forebay and the outlet back pool. The beneficial effects of the present invention are as follows: By improving the reasonable layout and process design between the structures, multiple process flows can be integrally arranged on a smaller floor area, enabling the combination of water conservancy and municipal water intake, with a smooth process and very convenient management, and adapting to the functional connection in the short and long terms.

Description

Technical Field

[0001] The present invention relates to a water intake pump house, and in particular to a structure and a water intake method for a shore - type multi - water - level combined water intake pump house. Background Art

[0002] With the increasing demand for surface water intake project construction in domestic cities, there are relatively high requirements for aspects such as the water intake safety, energy - saving operation, flood control design, and stable operation of water intake facilities. Especially in mountainous river courses and reservoirs, the water level changes greatly. When the water intake is at a high water level, the pump lift is too low, which is likely to cause phenomena such as equipment vibration, excessive current, and cavitation. The problem of balancing water intake and flood control is relatively prominent. Therefore, it is necessary to design a multi - water - level water intake pump house with a large fluctuation range, and the pump can operate efficiently or stably. In the case of tight land occupation, the layout form should be optimized, the process should be smooth, and it should be convenient for inspection, maintenance, and management. Summary of the Invention

[0003] The object of the present invention is to solve the problems in the prior art. Through the centralized arrangement of multiple functions such as highly integrated water intake, gravity flow, and energy dissipation and bypass, the water intake is safe, the pumps and motors operate stably, the land occupation of facilities is saved, it is convenient for intensive operation and management, and it has a flood control function. A new type of shore - type multi - water - level combined water intake pump house structure is provided.

[0004] To achieve this object, the technical solution of the present invention is as follows: A shore - type multi - water - level combined water intake pump house structure includes:

[0005] A water intake forebay;

[0006] An outlet back - bay arranged at the rear end of the water intake forebay;

[0007] A pump house arranged between the water intake forebay and the outlet back - bay. There is a water intake pump inside the pump house. The input end of the water intake pump is connected to the water intake forebay through a pipeline, and the output end of the water intake pump is connected to the outlet back - bay through a pipeline;

[0008] A lower - layer gravity flow channel arranged between the water intake forebay and the outlet back - bay. The lower - layer gravity flow channel is located below the upper - layer energy dissipation flow channel. The lower - layer gravity flow channel is respectively connected to the water intake forebay and the outlet back - bay; and

[0009] An upper - layer energy dissipation flow channel arranged between the water intake forebay and the outlet back - bay. The upper - layer energy dissipation flow channel is respectively connected to the water intake forebay and the outlet back - bay;

[0010] In the water intake forebay, the water intake level of the pump house is lower than the water intake level of the lower - layer gravity flow channel, and the water intake level of the lower - layer gravity flow channel is lower than the water intake level of the upper - layer energy dissipation flow channel.

[0011] As an optimal solution for the structure of the shore - type multi - water - level combined water intake pump house, the lower - layer gravity flow channel and the upper - layer energy - dissipating flow channel are arranged on the left side and / or the right side of the pump house chamber.

[0012] As an optimal solution for the structure of the shore - type multi - water - level combined water intake pump house, it further includes a power distribution room and a control room, and the power distribution room and the control room are arranged above the water intake forebay.

[0013] As an optimal solution for the structure of the shore - type multi - water - level combined water intake pump house, it further includes a function - switching well and a pressure - dividing high - pressure water outlet pipe. The function - switching well is connected to the output end of the water intake pump through pipelines, the input end of the pressure - dividing high - pressure water outlet pipe is connected to the water outlet after - pool, and the output end of the pressure - dividing high - pressure water outlet pipe is connected to external water supply equipment.

[0014] As an optimal solution for the structure of the shore - type multi - water - level combined water intake pump house, the lower - layer gravity flow channel is internally provided with flood - control gates, and the flood - control gates are used to cut off the connection between the water intake forebay and the water outlet after - pool regarding the lower - layer gravity flow channel during floods; preferably, flood - control gates are arranged at both the front end and the rear end of the lower - layer gravity flow channel.

[0015] As an optimal solution for the structure of the shore - type multi - water - level combined water intake pump house, the upper - layer energy - dissipating flow channel is internally provided with a flow - regulating and pressure - regulating valve, and the flow - regulating and pressure - regulating valve is used to adjust the flow rate and / or pressure of the water flowing through it.

[0016] The present invention also provides a method for water intake in a shore - type multi - water - level combined water intake pump house chamber, which includes the following steps:

[0017] Step S1: Provide the water intake pump house structure in the above - mentioned solution; and

[0018] Step S2: According to the liquid - level condition of the water intake forebay, determine the water intake method of the water intake pump house structure and perform water intake according to the water intake method. The water intake method is any one, any two, or all three of water intake in the pump house chamber, water intake through the lower - layer gravity flow channel, and water intake through the upper - layer energy - dissipating flow channel.

[0019] Compared with the prior art, the beneficial effects of the present invention are at least as follows: By improving the reasonable layout between structures and the hydraulic process design, multiple water intake methods are integrally arranged on a smaller floor area. The invention has a smooth process and a clear material transportation line, and the main advantages are as follows:

[0020] First, the integrated laminated design combines the technological requirements of multi - water - level water intake, improving the land - use efficiency of the structure.

[0021] Second, the flow between each flow channel is smooth, the water conveyance distance is short, and the energy - saving effect of using channel water conveyance is more than 20% more energy - saving than the planar layout.

[0022] Third, beyond the ingenious design concept, it can achieve a water conveyance method using water head, with obvious energy-saving effect and solving the flood control problem;

[0023] Fourth, in the laminated design, the common structural wall panels are shared among various structures, significantly reducing the overall investment.

[0024] Fifth, a reserved pipe for the high-pressure outlet pipeline is provided in the function switching well, enabling flexible implementation of pressure-divided water conveyance. Description of the Drawings

[0025] Figure 1 It is the upper-layer plan layout diagram of an embodiment of the present invention.

[0026] Figure 2 It is the middle-layer plan layout diagram of an embodiment of the present invention.

[0027] Figure 3 It is the pump house sectional layout diagram of an embodiment of the present invention.

[0028] Figure 4 It is the bypass channel sectional layout diagram of an embodiment of the present invention. Detailed Embodiments

[0029] The present invention will be further described in detail below through specific embodiments in connection with the drawings. It should be noted here that the description of these embodiments is for helping to understand the present invention, but does not constitute a limitation to the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Please refer to Figures 1 to 4 , which shows the structure of a shore-type multi-water-level combined water intake pump house, which is a combined structure for gravity water intake and pump-lifted water intake on the shore of urban rivers, lakes and reservoirs by using different hydrological conditions.

[0031] The combined structure is a combination composed of several functional units. The functional units include a pre-intake sump 1, a pump house 2, an upper energy dissipation channel 3, a lower gravity flow channel 4, a power distribution room and control room 5, a function switching well 6, a post-outflow sump 7, a flood control gate 8, a post-pool flow regulating weir 9 and a pressure-divided high-pressure outlet pipe 10.

[0032] The water intake forebay 1 is located at the water-facing end of the combined structure. The pump house 2 is arranged in the middle part of the combined structure. The upper energy dissipation channel 3 and the lower gravity flow channel 4 are respectively located in the upper and lower layers on both sides of the combined structure. The power distribution room and control room 5 are arranged on the upper part of the water intake forebay 1. The power distribution room and control room 5 and the function switching well 6 are located on the water outlet side of the pump house 2. The flood control gate 8 is located before and after the channel of the lower gravity flow channel 4. The post-pool flow regulating weir 9 is arranged in the outlet post-pool 7.

[0033] The power distribution and control room 5 is arranged in the upper layer area inside the combined structure, superimposed above the water intake forebay 1. The upper energy dissipation channel 3 and the lower gravity flow channel 4 are located on the left and right sides of the pump station 2.

[0034] The pump house 2 can be used as a low water level water intake structure to convey water to the function switching well 6 or the outlet post-pool 7. After the water level gradually rises, it can directly convey water to the outlet post-pool 7 by gravity through the lower gravity flow channel 4. After the water level rises further, to prevent subsequent flood control problems caused by too high water level, it can enter the outlet post-pool 7 through the upper energy dissipation channel 3.

[0035] As can be seen above, at different water levels, multiple water intake methods such as water intake from the pump house, water intake from the lower gravity flow channel, and water intake from the upper energy dissipation channel can be respectively realized. Among them, for the water intake from the upper energy dissipation channel, the flood control gate 8 and multiple valves in the pump house can be closed to take into account urban flood control while taking water.

[0036] When the lift head is relatively low, the pump lift can meet the requirement of efficient operation of the pump through the post-pool flow regulating weir 9.

[0037] The pump house of the present invention can also be provided with related automatic control, power distribution equipment, etc., which belong to the prior art and will not be described in detail here.

[0038] The above only expresses the embodiments of the present invention, and its description is relatively specific and detailed, but it cannot be understood as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. The structure of a shore-type multi-water-level combined water intake pump house is characterized in that Comprising, A water intake forebay; An effluent back pool arranged at the rear end of the water intake forebay; A pump house arranged between the water intake forebay and the effluent back pool. An intake pump is provided inside the pump house. The input end of the intake pump is connected to the water intake forebay through a pipeline, and the output end of the intake pump is connected to the effluent back pool through a pipeline; A lower-layer gravity flow channel arranged between the water intake forebay and the effluent back pool. The lower-layer gravity flow channel is respectively connected to the water intake forebay and the effluent back pool; and an upper-layer energy dissipation flow channel arranged between the water intake forebay and the effluent back pool. The upper-layer energy dissipation flow channel is respectively connected to the water intake forebay and the effluent back pool. The lower-layer gravity flow channel is located below the upper-layer energy dissipation flow channel; A flow regulating and pressure regulating valve is provided inside the upper-layer energy dissipation flow channel, and the flow regulating and pressure regulating valve is used to adjust the flow rate and / or pressure of the water flowing through it; A flood control gate is provided inside the lower-layer gravity flow channel, and the flood control gate is used to cut off the connection between the water intake forebay and the effluent back pool with respect to the lower-layer gravity flow channel during floods. The flood control gates are arranged at both the front end and the rear end of the lower-layer gravity flow channel; The upper-layer energy dissipation flow channel and the lower-layer gravity flow channel are located on both sides of the pump house; In the water intake forebay, the water intake level of the pump house is lower than the water intake level of the lower-layer gravity flow channel, and the water intake level of the lower-layer gravity flow channel is lower than the water intake level of the upper-layer energy dissipation flow channel; The function switching well is connected to the output end of the intake pump through a pipeline. The pump house serves as a low-water-level water intake structure to convey water to the function switching well or the effluent back pool. After the water level gradually rises, it directly conveys water to the effluent back pool through the lower-layer gravity flow channel by gravity; After the water level rises further, to prevent subsequent flood control problems caused by too high water level, it enters the effluent back pool through the upper-layer energy dissipation flow channel.

2. The structure of the shore-type multi-water-level combined water intake pump house according to claim 1, wherein Also comprising a power distribution room and a control room, which are arranged above the water intake forebay.

3. The structure of the riverside multi-water level combined water intake pump house according to claim 1, characterized in that, Also comprising a pressure-dividing high-pressure water outlet pipe, the input end of the pressure-dividing high-pressure water outlet pipe is connected to the effluent back pool, and the output end of the pressure-dividing high-pressure water outlet pipe is connected to an external water supply device.

4. The water intake method for the bank-type multi-water level combined water intake pump house is characterized in that Comprising the following steps: Step S1, providing the pump house structure according to any one of claims 1 to 3; and Step S2, determining the water intake method of the pump house structure according to the liquid level condition of the water intake forebay and performing water intake according to the water intake method. The water intake method is any one, any two or all three of water intake by the pump house, water intake by the lower-layer gravity flow channel and water intake by the upper-layer energy dissipation flow channel.

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