Detachable pore plate energy dissipation structure in vertical shaft

Abstract

The utility model provides a detachable pore plate energy dissipation structure in a vertical shaft, a plurality of mounting seats are arranged in the vertical shaft from top to bottom, a plurality of connecting plates are respectively fixed below each mounting seat, the side surfaces of the mounting seats and the connecting plates are fixed on the inner wall of the vertical shaft, detachable energy dissipation pore plates are arranged on part or all of the mounting seats, and the connecting plates are fixed on the inner wall of the vertical shaft. A plurality of flow passing holes are formed in the energy dissipation pore plate, water flow suddenly shrinks and expands in front of and behind the flow passing holes, a flow line is forced to be sharply bent under pressure driving, and the purpose of eliminating brake energy is achieved; the number of the energy dissipation pore plates and the distance between every two adjacent energy dissipation pore plates can be conveniently adjusted according to the actual energy dissipation condition, and meanwhile overhaul and maintenance in the follow-up using process are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a detachable orifice plate energy dissipation structure in a vertical shaft. Background Art

[0002] For water supply systems that use vertical shafts for energy dissipation, due to the high height of the inflow shaft, if the water flows directly from the top of the shaft to the bottom, the potential energy of the water flow will be converted into kinetic energy, which will inevitably cause a very large impact on the bottom of the shaft, damaging the shaft structure, causing vibration and noise in the shaft, and entraining a large amount of gas into the tunnel, affecting the safe operation of the project. To solve the problem of water flow energy dissipation, energy dissipation structures are often built in the shaft in current projects, such as traditional folded plate structures, slide structures, stepped structures, etc. When water flows through these structures, energy is dissipated, thereby achieving the purpose of energy dissipation. However, this type of energy dissipation measure, on the one hand, causes the structure built in the shaft to be eroded by the water flow, resulting in excessive structural vibration, threatening the structural safety. On the other hand, it is difficult to accurately judge the energy dissipation effect of the solidified energy dissipation structure. At the same time, because it is fixed and cannot be disassembled, it leads to problems such as inconvenience in inspection and maintenance. Utility Model Content

[0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art and provide a detachable orifice plate energy dissipation structure in a vertical shaft, which can solve the problem that the vertical shaft may be caused to generate structural vibration during the water flow energy dissipation process and the problem that the energy dissipation structure is fixedly installed in the vertical shaft, causing inconvenience in inspection and maintenance.

[0004] To this end, the utility model adopts the following technical solutions:

[0005] A detachable orifice plate energy dissipation structure in a vertical shaft, wherein a plurality of mounting seats are arranged from top to bottom in the vertical shaft, a plurality of connecting plates are fixed below each mounting seat, the sides of the mounting seats and the connecting plates are fixed to the inner wall of the vertical shaft, and a detachable energy dissipation orifice plate is provided above some or all of the mounting seats, and a plurality of flow holes are provided on the energy dissipation orifice plate.

[0006] On the basis of adopting the above technical solutions, the present invention may also adopt the following further technical solutions, or use these further technical solutions in combination:

[0007] A reinforcement structure is provided between the energy dissipation orifice plate and the mounting seat, and the size of the reinforcement structure matches that of the energy dissipation orifice plate.

[0008] The reinforcement structure includes a reinforcement ring and a reinforcement rod. The reinforcement rod is fixed in the reinforcement ring. The reinforcement ring is detachably connected to the mounting seat.

[0009] The flow hole is located between the reinforcement ring and the reinforcement rod, and the reinforcement rod includes one or more transverse rods and / or one or more longitudinal rods.

[0010] The mounting seat includes two fan-shaped mounting plates, the central angle of the fan-shaped mounting plates is less than one hundred and eighty degrees, the two fan-shaped mounting plates are symmetrically distributed about the center of the shaft, and the spacing between the two fan-shaped mounting plates is greater than the sum of the thicknesses of the reinforcement structure and the energy dissipation orifice plate.

[0011] The mounting seat is provided with a plurality of connection holes for connecting screws, and the connection holes and the connection plates are arranged in a staggered manner.

[0012] The surface shape of the connecting plate is a right triangle, and the inclined sides of the connecting plates form an outward-expanding annular surface with a gradually increasing diameter from top to bottom.

[0013] The diameter of the energy dissipation orifice plate is smaller than the inner diameter of the shaft.

[0014] The reinforcement structure is made of I-beam.

[0015] Compared with the existing technology, the utility model has the following advantages and beneficial effects: the water flow produces sudden contraction and expansion before and after the flow hole, and the streamline is forced to bend sharply under the drive of pressure, so as to achieve the purpose of dissipating energy. The energy dissipation orifice plate is detachable by arranging the mounting seat and the connecting plate, which facilitates the adjustment of the number of energy dissipation orifice plates and the distance between two adjacent energy dissipation orifice plates according to the actual energy dissipation situation, and is convenient for inspection and maintenance during subsequent use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model installed inside a vertical shaft.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure 3 for Figure 2 Top view of .

[0019] Figure 4 Schematic diagram of the three-dimensional structure of the energy dissipation orifice plate and the reinforcement structure.

[0020] Figure 5 for Figure 4 Top view of .

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the reinforcement structure.

[0022] Figure 7 This is an enlarged partial cross-sectional view of the utility model after installation. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the technical solution of the present invention, the preferred implementation scheme of the present invention is described below in conjunction with specific embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent elements with the same or similar functions. However, it should be understood that the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. In order to better illustrate the present embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted, and the positional relationship described in the drawings is only used for illustrative purposes and cannot be understood as limiting the present invention.

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0025] The utility model provides a detachable orifice plate energy dissipation structure in a vertical shaft. A plurality of mounting seats 5 are provided in the vertical shaft 1 from top to bottom. A plurality of connecting plates 3 are fixed below each mounting seat 5. The sides of the mounting seats 5 and the connecting plates 3 are fixed to the inner wall of the vertical shaft 1. A detachable energy dissipation orifice plate 2 is provided above some or all of the mounting seats 5. The energy dissipation orifice plate 2 is provided with a plurality of flow holes 21. The axis of the flow hole 21 is parallel to the axis of the vertical shaft 1.

[0026] In this embodiment, four evenly distributed flow holes 21 are provided on the energy dissipation orifice plate 2 . Depending on actual conditions, 2 to 9 flow holes 21 may be provided.

[0027] A reinforcement structure 4 is provided between the energy dissipation orifice plate 2 and the mounting seat 5 , and the size of the reinforcement structure 4 matches that of the energy dissipation orifice plate 2 .

[0028] The reinforcement structure 4 includes a reinforcement ring 41 and a reinforcement rod 42 . The reinforcement rod 42 is fixed inside the reinforcement ring 41 . The reinforcement ring 41 is detachably connected to the mounting seat 5 .

[0029] In this embodiment, the reinforcement ring 41 and the reinforcement rod 42 are connected by welding, and the energy dissipation orifice plate 2 and the reinforcement structure 4 are connected by welding.

[0030] The flow hole 21 is located between the reinforcement ring 41 and the reinforcement rod 42 . The reinforcement rod 42 includes one or more transverse rods and / or one or more longitudinal rods.

[0031] In this embodiment, the flow hole 21 is tangent to the inner diameter of the reinforcement ring 41 and the edge of the reinforcement rod 42 .

[0032] If two evenly distributed flow holes 21 are provided on the energy dissipation orifice plate 2 , the reinforcing rod 42 only includes one horizontal rod / vertical rod.

[0033] The distribution of the reinforcing rods 42 is designed according to the distribution of the flow holes 21. Without blocking the flow holes 21, they play the role of reinforcing the energy dissipation orifice plate 2. In this embodiment, four evenly distributed flow holes 21 are provided on the energy dissipation orifice plate 2, and the reinforcing rods 42 are distributed in a cross shape. If nine evenly distributed flow holes 21 are provided on the energy dissipation orifice plate 2, the reinforcing rods 42 are distributed in a well shape.

[0034] The mounting seat 5 includes two fan-shaped mounting plates, the central angle of the fan-shaped mounting plates is less than one hundred and eighty degrees, the two fan-shaped mounting plates are symmetrically distributed about the center of the shaft 1, and the distance between the two fan-shaped mounting plates is greater than the sum of the thicknesses of the reinforcing structure 4 and the energy dissipation orifice plate 2.

[0035] The two fan-shaped mounting plates of the mounting seat 5 are disconnected, and the space formed is convenient for the reinforcing structure 4 and the energy dissipation orifice plate 2 to pass through. When the reinforcing structure 4 and the energy dissipation orifice plate 2 need to be replaced / added or reduced, the reinforcing structure 4 and the energy dissipation orifice plate 2 are rotated to vertical ninety degrees so that the two can pass through between the two fan-shaped mounting plates.

[0036] The mounting base 5 is provided with a plurality of connection holes 51 for connecting screws, and the connection holes 51 and the connection plate 3 are arranged alternately.

[0037] In this embodiment, the mounting seat 5 and the reinforcement structure 4 are connected by screws.

[0038] The surface shape of the connecting plate 3 is a right triangle, and the inclined sides of the connecting plates 3 form an outwardly expanding annular surface with a gradually increasing diameter from top to bottom.

[0039] The water flow in the vertical shaft will suddenly contract and expand before and after passing through the orifice plate, and under the drive of pressure, the streamline is forced to bend sharply, achieving the purpose of eliminating the energy.

[0040] The diameter of the energy dissipation orifice plate 2 is smaller than the inner diameter of the shaft 1 to prevent the energy dissipation orifice plate from being stuck with the shaft 1 and being difficult to move during installation.

[0041] The reinforcement structure 4 is made of I-beam.

[0042] In actual application, please note that the number of mounting blocks 5 required and the distance between two adjacent mounting blocks 5 should be estimated based on the height of the shaft 1. The mounting blocks 5 and the connecting plate 3 should be fixed to the inner wall of the shaft 1. The fan-shaped mounting plates should be arranged symmetrically about the center of the shaft 1. The actual number of mounting blocks 5 installed should be more than the estimated number.

[0043] First, install the detachable reinforcement structure 4 and energy dissipation orifice plate 2 on part or all of the mounting seat 5, increase or subtract the number of reinforcement structures 4 and energy dissipation orifice plates 2 according to the actual energy dissipation effect, or replace the position of the reinforcement structure 4 and energy dissipation orifice plates 2, and increase or decrease the distance between two adjacent energy dissipation orifice plates 2.

[0044] like Figure 1 As shown, five layers of mounting seats 5 are arranged in the vertical shaft 1. Calculated from top to bottom, reinforcement structures 4 and energy dissipation orifice plates 2 are respectively arranged on the second, third and fourth layer mounting seats 5. According to actual conditions, reinforcement structures 4 and energy dissipation orifice plates 2 can be added on the first and fifth layer mounting seats 5, respectively, or the reinforcement structures 4 and energy dissipation orifice plates 2 on the second / third / fourth layer can be removed to obtain better energy dissipation effect.

[0045] It should be noted that the terms "including" and "having" in the specification and claims of the present invention and the above-mentioned drawings, as well as any variations thereof, are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two mechanisms, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0046] In the description of this utility model, it should be understood that terms such as "one end," "the other end," "outer side," "inner side," "horizontal," "end," "length," "outer end," "left," and "right" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are used solely to facilitate the description of this utility model and to simplify the description. They do not indicate or imply that the mechanisms or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. The terms "first" and "second" are used solely for brevity of description and do not indicate or imply relative importance.

[0047] Furthermore, in practicing the claims of the present invention, those skilled in the art may understand and effect variations to the disclosed embodiments by studying the drawings, the disclosure, and the appended claims. Furthermore, in the claims and the specification, words such as "comprising" and "including" do not exclude other elements or steps, and non-plural nouns do not exclude their plural forms.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. All equivalent changes and modifications made based on the present invention are covered by the scope of the claims of the present invention and will not be listed one by one here.

Claims

1. A detachable orifice plate energy dissipation structure in a shaft, characterized in that: A plurality of mounting seats (5) are provided in the vertical shaft (1) from top to bottom, a plurality of connecting plates (3) are fixed below each of the mounting seats (5), the side surfaces of the mounting seats (5) and the connecting plates (3) are fixed to the inner wall of the vertical shaft (1), and a detachable energy dissipation orifice plate (2) is provided above some or all of the mounting seats (5), and a plurality of flow holes (21) are provided on the energy dissipation orifice plate (2).

2. A detachable orifice plate energy dissipation structure in a vertical shaft according to claim 1, characterized in that: A reinforcement structure (4) is provided between the energy dissipation orifice plate (2) and the mounting seat (5), and the size of the reinforcement structure (4) matches that of the energy dissipation orifice plate (2).

3. A detachable orifice plate energy dissipation structure in a vertical shaft according to claim 2, characterized in that: The reinforcement structure (4) comprises a reinforcement ring (41) and a reinforcement rod (42), wherein the reinforcement rod (42) is fixed inside the reinforcement ring (41), and the reinforcement ring (41) is detachably connected to the mounting seat (5).

4. A detachable orifice plate energy dissipation structure in a vertical shaft according to claim 3, characterized in that: The flow hole (21) is located between the reinforcement ring (41) and the reinforcement rod (42), and the reinforcement rod (42) includes one or more transverse rods and / or one or more longitudinal rods.

5. The detachable orifice plate energy dissipation structure in a vertical shaft according to claim 2, characterized in that: The mounting seat (5) includes two fan-shaped mounting plates, the central angle of the fan-shaped mounting plates is less than one hundred and eighty degrees, the two fan-shaped mounting plates are symmetrically distributed about the center of the shaft (1), and the spacing between the two fan-shaped mounting plates is greater than the sum of the thicknesses of the reinforcement structure (4) and the energy dissipation orifice plate (2).

6. The detachable orifice plate energy dissipation structure in a vertical shaft according to claim 1, characterized in that: The mounting seat (5) is provided with a plurality of connection holes (51) for connecting screws, and the connection holes (51) and the connection plate (3) are arranged in a staggered manner.

7. A detachable orifice plate energy dissipation structure in a vertical shaft according to claim 3, characterized in that: The surface shape of the connecting plate (3) is a right triangle, and the inclined edges of the connecting plates (3) form an outwardly expanding annular surface with a gradually increasing diameter from top to bottom.

8. The detachable orifice plate energy dissipation structure in a vertical shaft according to claim 1, characterized in that: The diameter of the energy dissipation orifice plate (2) is smaller than the inner diameter of the vertical shaft (1).

9. The detachable orifice plate energy dissipation structure in a vertical shaft according to claim 2, characterized in that: The reinforcement structure (4) is made of I-beam.

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