Dry-wet separation large-flow high-fall stepped rotary energy dissipation well

Abstract

The utility model discloses a dry-wet separation large-flow high-fall stepped rotary energy dissipation well which comprises an energy dissipation well body. The water inlet is formed in the top of the outer surface of the energy dissipation well body; the devices enter the energy dissipation well body through a water inlet in the top. The first energy dissipation plate assembly comprises three sets of first energy dissipation plates and first water retaining strips which are installed at equal intervals, and the devices work cooperatively to buffer and guide the water flow. Then, the water flow can meet the second energy dissipation plate assembly with the similar structure, the second energy dissipation plate assembly also comprises three sets of energy dissipation plates and water retaining strips which are installed at equal intervals, and the water flow is further buffered and guided. Afterwards, the water flow passes through the third energy dissipation plate assembly, and a second energy dissipation plate and a second water retaining strip continue to conduct buffering and flow guiding. Finally, water flow reaches the dry chamber assembly, vibration and noise in the drainage process can be reduced through the partition plates and the vent holes, and the vent holes are formed in the partition plates at equal intervals. Water flow is discharged out of the energy dissipation well body through a water outlet in the bottom, and the whole energy dissipation process is completed.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy dissipation well technical field more specifically, the utility model relates to a kind of dry-wet separation large flow high fall ladder rotary energy dissipation well. BACKGROUND

[0002] Energy dissipation well is a kind of water conservancy facilities, mainly used to reduce the energy of water flow, to reduce the scouring and damage of water flow to downstream river, building or pipeline. Energy dissipation well is usually used in the flood discharge system of hydropower station, spillway of reservoir, and places with large drop in long-distance water conveyance pipeline.

[0003] Traditional municipal drainage engineering usually adopts energy dissipation mode of vertical pipe type drop well, vertical groove type drop well or ladder type drop well. According to "Outdoor Drainage Design Standard GB50014-2021", when the inlet pipe diameter of drop well is not more than 200mm, the water head height of one-time drop shall not be greater than 6m; when the pipe diameter is 300mm~600mm, the water head height of one-time drop shall not be greater than 4m. The water flow of these energy dissipation modes is vertically dropped or nearly vertically dropped, so the land use is less, and it is usually used underground; but the energy dissipation efficiency of these energy dissipation modes is low, so it is usually used only in the case of small drainage flow and small drop.

[0004] Traditional water conservancy engineering usually adopts energy dissipation mode of flip flow, bottom flow or face flow. The water flow of these energy dissipation modes is horizontally ejected or ejected at a small flip angle, and the jet distance is long, so it is usually used in open terrain, with large land use and high investment. SUMMARY

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a kind of dry-wet separation large flow high fall ladder rotary energy dissipation well to solve the problem of large land use and high investment in traditional mode.

[0006] To solve the above technical problems, the utility model provides the following technical scheme: a kind of dry-wet separation large flow high fall ladder rotary energy dissipation well, comprising: energy dissipation well body;Water inlet is arranged at the top of the outer surface of the energy dissipation well body, and the water inlet is used to input water flow;Water outlet is arranged at the bottom of the outer surface of the energy dissipation well body, and the water outlet is used to output water flow;Energy dissipation plate assembly one and energy dissipation plate assembly two are assembled in the inside of the energy dissipation well body, and the energy dissipation plate assembly one and the energy dissipation plate assembly two are used for buffering and flow guiding;Energy dissipation plate assembly three is assembled in the inside of the energy dissipation well body, and the energy dissipation plate assembly three is used for buffering and flow guiding;Dry chamber assembly is assembled in the inside of the energy dissipation well body, and the dry chamber assembly is used to reduce vibration and noise generated in the process of discharge.

[0007] Preferably, the energy dissipation plate assembly one comprises: energy dissipation plate one fixedly installed inside the energy dissipation well body, the bottom of the energy dissipation plate one is fixedly installed with water baffle one, the energy dissipation plate assembly one is provided with three groups, and the three groups of energy dissipation plate assembly one are equidistantly installed inside the energy dissipation well body.

[0008] Preferably, the energy dissipation plate assembly two is same in structure with the energy dissipation plate assembly one, the energy dissipation plate assembly two is provided with three groups, and the three groups of energy dissipation plate assembly two are equidistantly installed inside the energy dissipation well body.

[0009] Preferably, the energy dissipation plate assembly three comprises: energy dissipation plate two fixedly installed inside the energy dissipation well body, and the bottom of the energy dissipation plate two is fixedly installed with water baffle two.

[0010] Preferably, the dry chamber assembly comprises: a partition plate fixedly installed inside the energy dissipation well body, and the partition plate is provided with a vent hole.

[0011] Preferably, the vent hole is provided with multiple groups, and the multiple groups of vent holes are equidistantly arranged on the partition plate.

[0012] Compared with the prior art, the energy dissipation well body has the advantages that:

[0013] The water inlet at the top of the energy dissipation well body enters the energy dissipation well body. Inside, the water flow encounters the energy dissipation plate assembly one, which comprises three groups of equidistantly installed energy dissipation plate one and water baffle one, and these devices work together to buffer and guide the water flow. Then, the water flow encounters the energy dissipation plate assembly two with similar structure, which also comprises three groups of equidistantly installed energy dissipation plate and water baffle, to further buffer and guide the water flow. Subsequently, the water flow passes through the energy dissipation plate assembly three, and the energy dissipation plate two and water baffle two in the energy dissipation plate assembly three continue to buffer and guide the water flow. Finally, the water flow reaches the dry chamber assembly, and the partition plate and vent hole in the dry chamber assembly help to reduce the vibration and noise in the flow process, and the multiple groups of vent holes are equidistantly arranged on the partition plate. The water flow is discharged from the water outlet at the bottom of the energy dissipation well body, and the whole energy dissipation process is completed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a whole structure schematic view of the utility model;

[0015] Figure 2 It is an energy dissipation plate assembly one structure schematic view of the utility model;

[0016] Figure 3 It is an energy dissipation plate assembly three structure schematic view of the utility model;

[0017] Figure 4 It is a dry chamber assembly structure schematic view of the utility model;

[0018] Figure 5The structure data schematic diagram of the utility model.

[0019] [Reference signs]

[0020] 1, energy dissipation well body; 2, water inlet; 3, water outlet; 4, energy dissipation plate assembly one; 5, energy dissipation plate assembly two; 6, energy dissipation plate assembly three; 7, dry chamber assembly; 401, energy dissipation plate one; 402, water baffle one; 601, energy dissipation plate two; 602, water baffle two; 701, partition; 702, air hole. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor are involved in the protection scope of the utility model. Embodiment one

[0022] The preferred embodiment of the dry-wet separation large-flow high-drop ladder rotary energy dissipation well provided by the utility model is shown as follows: Figures 1 to 5 The utility model discloses a dry-wet separation large-flow high-drop ladder rotary energy dissipation well, which comprises an energy dissipation well body 1, a water inlet 2 formed in the top of the outer surface of the energy dissipation well body 1, a water outlet 3 formed in the bottom of the outer surface of the energy dissipation well body 1, an energy dissipation plate assembly one 4 and an energy dissipation plate assembly two 5 assembled in the inside of the energy dissipation well body 1, wherein the energy dissipation plate assembly one 4 and the energy dissipation plate assembly two 5 are used for buffering and flow guiding.

[0023] An energy dissipation plate assembly three 6 is assembled in the inside of the energy dissipation well body 1, and the energy dissipation plate assembly three 6 is used for buffering and flow guiding; a dry chamber assembly 7 is assembled in the inside of the energy dissipation well body 1, and the dry chamber assembly 7 is used for reducing vibration and noise generated in the process of flow leakage.

[0024] In the embodiment, the energy dissipation plate assembly one 4 comprises an energy dissipation plate one 401 fixedly installed in the inside of the energy dissipation well body 1, and a water baffle one 402 fixedly installed at the bottom of the energy dissipation plate one 401, and the energy dissipation plate assembly one 4 is provided with three groups of energy dissipation plate assemblies one 4, and the three groups of energy dissipation plate assemblies one 4 are equidistantly installed in the inside of the energy dissipation well body 1.

[0025] In the embodiment, the structure of the energy dissipation plate assembly two 5 is the same as that of the energy dissipation plate assembly one 4, and the energy dissipation plate assembly two 5 is provided with three groups of energy dissipation plate assemblies two 5, and the three groups of energy dissipation plate assemblies two 5 are equidistantly installed in the inside of the energy dissipation well body 1.

[0026] In the embodiment, the energy dissipation plate assembly three 6 comprises an energy dissipation plate two 601 fixedly installed in the inside of the energy dissipation well body 1, and a water baffle two 602 fixedly installed at the bottom of the energy dissipation plate two 601.

[0027] In this embodiment, the dry chamber assembly 7 comprises a partition plate 701 fixedly installed inside the energy dissipation well body 1, and the partition plate 701 is provided with air holes 702.

[0028] In this embodiment, the air holes 702 are provided in multiple groups and are equidistantly arranged on the partition plate 701.

[0029] The water flow enters the energy dissipation well body 1 through the water inlet 2 at the top. Inside, the water flow encounters the energy dissipation plate assembly one 4 which comprises three groups of equidistantly installed energy dissipation plates one 401 and water baffle strips one 402 which work together to buffer and guide the water flow. Then, the water flow encounters the energy dissipation plate assembly two 5 which is similar in structure and also comprises three groups of equidistantly installed energy dissipation plates and water baffle strips to further buffer and guide the water flow. Subsequently, the water flow passes through the energy dissipation plate assembly three 6 in which the energy dissipation plates two 601 and the water baffle strips two 602 continue to buffer and guide the water flow. Finally, the water flow reaches the dry chamber assembly 7 in which the partition plate 701 and the air holes 702 help to reduce the vibration and noise during the flow discharge, and the air holes 702 are provided in multiple groups and equidistantly arranged on the partition plate 701. The water flow is discharged from the energy dissipation well body 1 through the water outlet 3 at the bottom, and the entire energy dissipation process is completed. Embodiment Two

[0030] On the basis of embodiment one, the preferred embodiment of the dry-wet separation large-flow high-drop ladder rotary energy dissipation well provided by the utility model has Figures 1 to 5 As shown in the figure: the utility model provides a kind of dry-wet separation large-flow high-drop ladder rotary energy dissipation well design method, comprising the following steps.

[0031] S1, stable and efficient energy dissipation state requires that the water flow of energy dissipation plate cannot directly impact energy dissipation well wall, according to model test, the critical condition for stable energy dissipation is: 0.26≤h / B≤0.408 (according to model test formula), recommended value 1 / 3, wherein h is energy dissipation plate spacing (unit m), B is energy dissipation plate width (unit m).

[0032] S2, according to model test, under different energy dissipation plate spacing, the maximum flow condition of folded plate vertical shaft is: Frb=0.5448h / B-0.0173 (according to existing research), wherein Frb is the folded plate width Fr number (dimensionless) representing the ratio of water flow inertial force and gravity.

[0033] S3, energy dissipation plate width and energy dissipation plate flow meet the following relationship, B 5 =Q 2 / (g·Frb 3 ) (existing formula), wherein Q is energy dissipation plate flow (unit m 3 / s), g is gravity acceleration (unit m / s 2).

[0034] S4, in order to achieve good ventilation effect, according to model test, the critical condition is: 0.6<=B / D<=0.75, S>=0.015B*h (according to the model test formula), wherein D is the diameter of the energy dissipation well (unit m), S is the ventilation hole area (unit m 2 ).

[0035] S5, through the above steps, the key parameters of the energy dissipation well, such as the fold plate width Frb, the energy dissipation plate width B, the energy dissipation well diameter D, the energy dissipation plate spacing h and the ventilation hole area S, can be gradually obtained from the required flow discharge Q and the proposed h / B value.

[0036] S6, according to the model test, the angle alpha between the edge of the last layer of energy dissipation plate and the partition wall is preferably 65~75°.

[0037] S7, in order to reduce the impact of water flow on the bottom plate of the energy dissipation well, the water depth of the energy dissipation well should meet the following requirements: hs>=1.66[Q 2 / (B 2 ·g·P 3 )] 0.27 P (existing formula), wherein hs is the water depth of the energy dissipation well (unit m), P is the height difference between the last layer of energy dissipation plate and the bottom of the well (unit m)

[0038] Finally, it should be pointed out that in the description of the present application, it should be pointed out that unless otherwise specified and limited, the terms "installation", "connection", "connection" should be understood in a broad sense, which can be mechanical connection or electrical connection, or the communication between two elements, or direct connection, "up", "down", "left", "right" and the like are only used to indicate the relative positional relationship, when the absolute position of the described object changes, the relative positional relationship may change;

[0039] Secondly: the utility model discloses the embodiment of the drawings, only relate to the structure involved in the embodiment of the present disclosure, other structures can refer to the usual design, in the case where there is no conflict, the same embodiment and different embodiments of the utility model can be combined with each other;

[0040] Finally: the above only for the preferred embodiment of the utility model, and does not limit the utility model, any modification, equivalent replacement, improvement etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A dry-wet separation, high-flow-rate, high-drop stepped rotary energy dissipation well, characterized in that, include: Energy dissipation well body (1); A water inlet (2) is provided on the top of the outer surface of the energy dissipation well body (1), and the water inlet (2) is used to input water flow; A water outlet (3) is provided at the bottom of the outer surface of the energy dissipation well body (1), and the water outlet (3) is used to output water flow; The first energy dissipation plate assembly (4) and the second energy dissipation plate assembly (5) are installed inside the energy dissipation well body (1). The first energy dissipation plate assembly (4) and the second energy dissipation plate assembly (5) are used for buffering and diversion. An energy dissipation plate assembly three (6) is installed inside the energy dissipation well body (1), the energy dissipation plate assembly three (6) is used for buffering and diversion; The dry chamber assembly (7) is installed inside the energy dissipation well body (1) to reduce vibration and noise generated during the discharge process.

2. The dry-wet separation, high-flow-rate, high-drop stepped rotary energy dissipation well according to claim 1, characterized in that, The energy dissipation panel assembly one (4) includes: An energy dissipation plate (401) is fixedly installed inside the energy dissipation well body (1). A water baffle (402) is fixedly installed at the bottom of the energy dissipation plate (401). Three sets of energy dissipation plate assemblies (4) are provided. The three sets of energy dissipation plate assemblies (4) are installed equidistantly inside the energy dissipation well body (1).

3. The dry-wet separation, high-flow-rate, high-drop stepped rotary energy dissipation well according to claim 2, characterized in that, The structure of the second energy dissipation plate assembly (5) is the same as that of the first energy dissipation plate assembly (4). The second energy dissipation plate assembly (5) is provided in three sets, and the three sets of the second energy dissipation plate assembly (5) are installed at equal intervals inside the energy dissipation well body (1).

4. The dry-wet separation, high-flow-rate, high-drop stepped rotary energy dissipation well according to claim 3, characterized in that, The energy dissipation panel assembly three (6) includes: An energy dissipation plate 2 (601) is fixedly installed inside the energy dissipation well body (1), and a water baffle 2 (602) is fixedly installed at the bottom of the energy dissipation plate 2 (601).

5. The dry-wet separation, high-flow-rate, high-drop stepped rotary energy dissipation well according to claim 4, characterized in that, The dry chamber assembly (7) includes: A partition (701) is fixedly installed inside the energy dissipation well body (1), and a ventilation hole (702) is provided on the partition (701).

6. The dry-wet separation, high-flow-rate, high-drop stepped rotary energy dissipation well according to claim 5, characterized in that, The ventilation holes (702) are provided in multiple sets, and the multiple sets of ventilation holes (702) are provided at equal intervals on the partition plate (701).

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