Flat gate structure capable of ecological drainage

Abstract

The flat plate gate structure with ecological discharge is provided with a gate chamber, the upper portion of the gate chamber is connected with a working gate slot, the inside of the working gate slot is inserted with a working gate body, the bottom of the working gate body is provided with an ecological flow hole, the width of the ecological flow hole is 0.2-0.5 times of the width of the discharge hole of the gate chamber; the bottom of the working gate slot is provided with a concrete filling body at the position corresponding to the ecological flow hole, the top of the concrete filling body is flush with the bottom plate of the gate chamber; the working gate body is lowered into the working gate slot, and the ecological flow hole avoids the concrete filling body. The application only needs to open the ecological flow hole to the original working gate body and fill a small amount of concrete into the working gate slot to meet the discharge requirement of the ecological flow, without greatly increasing the investment of the project, and greatly reducing the gate vibration caused by the small opening operation of the conventional flat plate gate in the engineering practice.

Description

TECHNICAL FIELD

[0001] The present application relates to a flat gate structure with ecological discharge, belonging to the technical field of water conservancy and hydropower engineering. BACKGROUND

[0002] At present, according to the needs of engineering operation and ecological environment, a certain ecological flow must be discharged downstream during the operation of the power station to meet the ecological requirements of the river channel and the water demand for production and living of the villages and towns downstream the power station. Therefore, when designing a water conservancy project, the influence of river cutoff on the downstream ecological environment, industrial and agricultural water, and residents' water, as well as how to avoid the waste of water energy of ecological discharge flow, should be fully considered. Usually, a special ecological water discharge channel, i.e. an ecological discharge channel, needs to be set on the river-blocking structure. This is also an important part of the sustainable development of the ecological environment.

[0003] The ecological discharge channel is a permanent structure and should be arranged in combination with other structures of the project. Generally, the conventional construction gate scheme sets the ecological discharge channel by using buried pipes to connect the upstream and downstream, and sets a gate valve for control. This scheme is relatively easy to implement and has a small investment for the projects under construction or to be constructed; but for the projects already built, it is necessary to first empty the existing reservoir water level to implement the excavation of the existing concrete structure or new excavation, which has a high construction difficulty and investment, and affects the safety of the original structure of the building, and has high technical requirements. In addition, for the small and medium-sized water conservancy and hydropower projects already built, the gate is usually directly lifted to a small height to meet the demand of ecological flow discharge, but this operation mode is strictly prohibited in the design because the small opening operation may cause cavitation erosion damage and also cause vibration of the gate, which may cause hidden dangers to the structure safety of the gate. SUMMARY

[0004] The present application aims to provide a flat gate structure with ecological discharge to reduce the construction difficulty of the ecological discharge channel and reduce the project investment, especially to solve the problems of high construction difficulty, high investment and safety of the building structure of the ecological discharge channel of the already built project.

[0005] The technical scheme for solving the above technical problems is as follows: a flat gate structure with ecological discharge, comprising a gate chamber, a working gate slot connected to the upper part of the gate chamber, a working gate body inserted into the inside of the working gate slot, an ecological flow hole opened in the bottom of the working gate body, and the width of the ecological flow hole being 0.2-0.5 times the width of the discharge hole of the gate chamber.

[0006] A concrete filling body is arranged at the bottom of the working gate slot corresponding to the position of the ecological flow hole, and the top of the concrete filling body is flush with the bottom plate of the gate chamber.

[0007] The working gate body is lowered into the working gate slot, and the ecological flow hole avoids the concrete filling body.

[0008] As a preferred solution of the ecological flat-plate gate structure, the working gate body is lowered so that the bottom of the working gate body and the bottom of the working gate slot are fitted; and the concrete filling body makes the ecological flow hole in a blocking state.

[0009] As a preferred solution of the ecological flat-plate gate structure, the working gate body is lowered so that the bottom of the working gate body and the bottom of the working gate slot are fitted; and the concrete filling body makes the ecological flow hole in a blocking state.

[0010] As a preferred solution of the ecological flat-plate gate structure, the end of the gate chamber is formed with a water inlet, and the water inlet is in a horn shape.

[0011] As a preferred solution of the ecological flat-plate gate structure, a maintenance gate slot is arranged between the working gate slot and the water inlet, and the maintenance gate slot is configured with a maintenance gate body.

[0012] As a preferred solution of the ecological flat-plate gate structure, a ventilation pipe is arranged between the maintenance gate slot and the water inlet, and the ventilation pipe guides the gate chamber.

[0013] As a preferred solution of the ecological flat-plate gate structure, the width b of the ecological flow hole is:

[0014] b = (0.2-0.5)B

[0015] In the formula, B is the width of the discharge hole;

[0016] The opening height h of the ecological flow hole is:

[0017]

[0018] In the formula, Q represents the ecological flow, μ is the flow coefficient of the ecological flow hole 4, g is the acceleration of gravity, and H represents the water head.

[0019] The application is provided with a gate chamber, the upper part of the gate chamber is connected with a working gate slot, a working gate body is inserted in the inside of the working gate slot, an ecological flow hole is arranged at the bottom of the working gate body, the width of the ecological flow hole is 0.2-0.5 times of the width of the gate chamber drain hole, a concrete filling body is arranged at the position corresponding to the ecological flow hole at the bottom of the working gate slot, the top of the concrete filling body is flush with the bottom plate of the gate chamber, the working gate body is lowered into the working gate slot, and the ecological flow hole avoids the concrete filling body. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be derived from the provided drawings without creative labor.

[0021] The structures, proportions, sizes, etc. shown in the specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions for the implementation of the present application, so they do not have technical substantive significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0022] Figure 1 A low-opening operation scene diagram of an existing technology engineering power station gate;

[0023] Figure 2 A structure schematic diagram of the ecological flow discharge flat plate gate provided by the embodiment of the present application;

[0024] Figure 3 A working state schematic diagram of the ecological flow discharge flat plate gate provided by the embodiment of the present application.

[0025] In the figure, 1 is a gate chamber, 2 is a working gate slot, 3 is a working gate body, 4 is an ecological flow hole, 5 is a concrete filling body, 6 is an inlet, 7 is a maintenance gate slot, and 8 is an air pipe. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the drawings. In the following description, a large number of specific details are set forth in order to facilitate a thorough understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the scope of the present application, so the present application is not limited to the specific embodiments disclosed below.

[0027] 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 belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0028] Relevant studies have shown that the ecological flow is the water quantity provided by a river, wetland or estuary area to achieve certain goals. Under natural conditions, the ecological flow is to maintain the function of its ecosystem; under the influence of human activities, it is to seek the best balance between various water uses and maintain regional sustainable development. Most of the domestic power stations were built in the 1960s, and the ecological flow of the river was not considered at that time. In recent years, in order to implement the connotation of ecological civilization and strengthen the construction of ecological civilization, the majority of small and medium-sized power stations respond to the requirements and implement ecological discharge.

[0029] Referring to Figure 1 , through field investigation and research on many power stations in Sichuan, it is found that many power stations will pull the gate to low opening operation to meet the requirement of ecological discharge, which directly leads to violent vibration of the gate, and even cavitation and erosion phenomenon occurs in the rear side wall of the gate of some power stations. Not only does it affect the gate itself and increase the maintenance and replacement cost, but also there is a great safety hazard.

[0030] Therefore, referring to Figure 2 and Figure 3 , the embodiment of the present application provides a flat gate structure capable of ecological discharge, which comprises a gate chamber 1, a working gate slot 2 connected to the upper part of the gate chamber 1, a working gate body 3 inserted into the inside of the working gate slot 2, an ecological flow hole 4 formed in the bottom of the working gate body 3, and the width of the ecological flow hole 4 is 0.2-0.5 times the width of the discharge hole of the gate chamber 1.

[0031] Among them, a concrete filling body 5 is arranged at the position corresponding to the ecological flow hole 4 at the bottom of the working gate slot 2, and the top of the concrete filling body 5 is flush with the height of the bottom plate of the gate chamber 1.

[0032] Among them, the working gate body 3 is lowered into the working gate slot 2, and the ecological flow hole 4 avoids the concrete filling body 5.

[0033] In this embodiment, the width b of the ecological flow orifice 4 is (0.2~0.5)B, where B is the width of the drainage orifice and the opening height of the ecological flow orifice 4 is... In the formula, Q represents ecological flow, μ is the ecological flow orifice 4 flow coefficient, g is the gravitational acceleration, and H represents the head.

[0034] In this embodiment, the working gate body 3 is lowered so that the bottom of the working gate body 3 fits into the bottom of the working gate slot 2; the concrete filler 5 blocks the ecological flow hole 4.

[0035] Specifically, when the working gate body 3 is fully lowered, that is, when the working gate body 3 falls to the bottom of the working gate slot 2, the concrete filling body 5 blocks the ecological flow hole 4, and ecological discharge is not carried out at this time.

[0036] Support Figure 3 In this embodiment, the working gate body 3 is lowered so that a gap is reserved between the bottom of the working gate body 3 and the bottom of the working gate slot 2; the concrete filling body 5 makes the ecological flow hole 4 in a conductive state.

[0037] Specifically, when the working gate body 3 does not descend completely, that is, when the working gate body 3 falls into the working gate slot 2, but there is still a gap between the bottom of the working gate body 3 and the bottom of the working gate slot 2, the concrete filling body 5 partially blocks the ecological flow hole 4, but does not block it completely. At this time, ecological discharge is carried out, which greatly reduces or even eliminates the problem of gate vibration caused by small opening operation of conventional flat gate in engineering practice.

[0038] In this embodiment, an inlet 6 is formed at the end of the gate chamber 1, and the inlet 6 is funnel-shaped. A maintenance gate slot 7 is provided between the working gate slot 2 and the inlet 6, and a maintenance gate body (not shown) is configured in the maintenance gate slot 7. A vent pipe 8 is provided between the maintenance gate slot 7 and the inlet 6, and the vent pipe 8 connects to the gate chamber 1.

[0039] Specifically, the inlet 6 serves to allow water to enter the gate chamber 1, and the maintenance gate slot 7, in conjunction with the maintenance gate body, plays an auxiliary role in maintenance. When maintenance is required on the working gate body 3, the working gate slot 2, or the gate chamber 1, the maintenance gate body falls into the maintenance gate slot 7. The vent pipe 8 is designed to aerate the water flow.

[0040] The application has the gate chamber 1, the upper part of the gate chamber 1 is connected with the working gate slot 2, the inside of the working gate slot 2 is inserted with the working gate body 3, the bottom of the working gate body 3 is provided with the ecological flow hole 4, the width of the ecological flow hole 4 is 0.2-0.5 times of the width of the discharge hole of the gate chamber 1; the bottom of the working gate slot 2 is provided with the concrete filling body 5 corresponding to the position of the ecological flow hole 4, the top of the concrete filling body 5 is flush with the bottom plate of the gate chamber 1; the working gate body 3 is lowered into the working gate slot 2, and the ecological flow hole 4 avoids the concrete filling body 5. The ecological flow hole 4 of a certain size is opened at the bottom of the built flat gate, meanwhile, the middle of the working gate slot 2 corresponding to the position of the ecological flow hole 4 is filled with the concrete to the height flush with the bottom plate of the gate chamber 1 to form the concrete filling body 5. When running, the working gate body 3 is appropriately lifted, at this time, the working gate body 3 is bound by the working gate slot 2 on both sides, and the bottom of the working gate body 3 is also partially inserted into the working gate slot 2, only the middle ecological flow hole 4 realizes the discharge of the ecological flow. The outstanding advantages of the application are that for the built small and medium-sized projects, only the original working gate body 3 is treated to open the ecological flow hole 4, and a small amount of concrete is filled in the working gate slot 2 to meet the discharge requirement of the ecological flow; without greatly increasing the project investment, the problem of gate vibration caused by the small opening operation of the conventional flat gate in the engineering practice is greatly reduced or even eliminated.

[0041] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not exist contradictions, they should be considered as the scope of the present disclosure.

[0042] The above-described embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the present application. It should be pointed out that for those skilled in the art, some modifications and improvements can be made without departing from the concept of the present application, and these belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. An ecological flat plate gate structure, comprising a gate chamber (1), the upper part of the gate chamber (1) is connected with a working gate slot (2), the inside of the working gate slot (2) is inserted with a working gate body (3), characterized in that, The bottom of the working gate body (3) is provided with an ecological flow hole (4); the width of the ecological flow hole (4) is 0.2-0.5 times the width of the discharge hole of the gate chamber (1); The bottom of the working gate slot (2) is provided with a concrete filling body (5) corresponding to the position of the ecological flow hole (4); the top of the concrete filling body (5) is flush with the bottom plate of the gate chamber (1); The working gate body (3) is lowered into the working gate slot (2), and the ecological flow hole (4) avoids the concrete filling body (5); The working gate body (3) is lowered, so that the bottom of the working gate body (3) is attached to the bottom of the working gate slot (2); the concrete filling body (5) makes the ecological flow hole (4) in a closed state; The working gate body (3) is lowered, so that the bottom of the working gate body (3) is attached to the bottom of the working gate slot (2); the concrete filling body (5) makes the ecological flow hole (4) in a closed state; The width of the ecological flow hole (4) b is: b = (0.2-0.5) B In the formula, B is the width of the drain opening; Height of opening of ecological flow hole (4) h Is: ; wherein Q Ecological flow, μ is the flow coefficient of the ecological flow hole (4), g is the gravitational acceleration, H denotes the water head.

2. A flat gate structure capable of ecological discharge according to claim 1, characterized in that, The end of the gate chamber (1) is formed with a water inlet (6), and the water inlet (6) is in a trumpet shape.

3. A flat plate gate structure capable of ecological discharge according to claim 2, characterized in that, The working gate slot (2) and the water inlet (6) are provided with a maintenance gate slot (7), and the maintenance gate slot (7) is provided with a maintenance gate body.

4. A flat gate structure capable of ecological discharge according to claim 3, characterized in that, The maintenance gate slot (7) and the water inlet (6) are provided with an air pipe (8), and the air pipe (8) connects the gate chamber (1).

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