Short-protection tank type hydropower station energy dissipation pool structure
By designing a short-barrel hydropower station power plant exhaust pool structure including cyclotron, diversion tank and circulation channel reduction tank, the problem of the existing structure being easily damaged under the impact of high-pressure flowing water sources is solved, and better pressure-resistant reduction effect and service life are achieved.
Patent Information
- Application Number
- CN202421476559.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The existing short-guard tank-type hydropower station exhaust pool structure is easily damaged under the impact of high-pressure flowing water source, and its compressive resistance is limited, resulting in a reduced reduction in the effect of deceleration and exhaustion.
A structure including a foundation, a concrete base, a cyclometer, a flow channel and a speed reduction groove are designed. Through the design of the cyclometer and a flow channel, the water source forms a return and inclined movement during the flow process, enters the speed reduction groove of the circulation channel structure, and uses the cooperation of the buffer seat and the limiting rod to assist in the flow reduction buffer and pressure reduction.
It effectively reduces the impulse pressure of the initial flow of the water source, improves the pressure-resistant reduction effect, extends the service life of the concrete base, and further controls the water flow through the design of the shunt seat to enhance the force-discharging effect.
Smart Images
Figure CN222700922U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of energy dissipation pool protection tanks, in particular to a short protection tank type energy dissipation pool structure for a hydropower station. Background Art
[0002] Among the energy dissipation methods of hydropower stations, the energy dissipation pool is a more common one, which is set at the downstream of the discharge structure. By forming a hydraulic jump in the energy dissipation pool, the rapid flow discharged from the discharge structure is transformed into a slow flow to eliminate excess kinetic energy. The energy dissipation pool often has the characteristics of stable flow and good energy dissipation effect.
[0003] After searching the utility model of the short tank-type hydropower station energy dissipation pool structure with application number 201520115339, it forms a blocking and diversion space through the energy dissipation teeth and the water buffer to slow down and buffer the high-pressure flowing water source, but the discharge pressure of the hydropower station is very large. The energy dissipation teeth in this scheme are from bottom to top, and the structural thickness is getting thinner and thinner. It is easy to be damaged and broken under the strong pressure impact of the water flow, and the service life is not long. In addition, the water buffer installed on the top of the energy dissipation teeth will also be easily tilted and damaged under the impact. The overall structure has limited compressive resistance, resulting in a reduction in the subsequent deceleration and force dissipation effect. For this reason, we propose a short tank-type hydropower station energy dissipation pool structure. Utility Model Content
[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a short guard tank type hydropower station stilling pool structure.
[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a short-guard tank-type hydropower station energy dissipation pool structure, including a foundation, a concrete base is cast on the surface of the foundation, a swirl groove is opened inside the concrete base, a liquid inlet groove connected to the swirl groove is opened on one side of the concrete base, a first guide groove is opened on the inner side of the swirl groove, a first deceleration groove, a second deceleration groove and a third deceleration groove which are sequentially guided and matched are opened inside the concrete base, and a discharge guide groove connected to the third deceleration groove is opened on the other side of the concrete base.
[0006] Preferably, the inner wall of the swirling groove is an arc-shaped wall structure, the first guide groove is a trapezoidal hollow structure, and the inner side of the first guide groove is an inclined surface.
[0007] Preferably, when the water source enters the inner side of the vortex groove through the liquid inlet groove, the water source passes through the inner wall of the vortex groove and is in a diversion and vortex deceleration state. When the water source enters the first guide groove through the vortex groove, the inclined surface inside the first guide groove of the water source is in a secondary guidance and deceleration state.
[0008] Preferably, a circulation channel structure is formed inside the first deceleration groove, the second deceleration groove and the third deceleration groove, and when the water source passes through the first deceleration groove, the second deceleration groove and the third deceleration groove, the water source is in a three-cycle reciprocating diversion and deceleration state.
[0009] Preferably, a buffer seat is provided inside the first deceleration groove, the second deceleration groove and the third deceleration groove, and a buffer groove for assisting water source diversion and deceleration is provided inside the buffer seat.
[0010] Preferably, an annular seat is installed on the inner side of the first deceleration groove, the second deceleration groove and the third deceleration groove, a limiting hole is provided inside the annular seat, a limiting rod passing through the limiting hole is installed on one side of the buffer seat, a supporting spring for buffering the buffer seat is sleeved on the outer side of the limiting rod, and a limiting plate is installed on the end of the limiting rod.
[0011] Preferably, a diverter seat is cast on the surface of the foundation, a second diversion groove is provided on the diverter seat facing the water flow side, the interior of the second diversion groove is an inwardly converging structure, and diverter grooves distributed equidistantly are provided on the inner side of the second diversion groove.
[0012] Preferably, when the water source passes through the second guide groove, the water source passes through the multi-component flow groove and is in a diversion and deceleration state.
[0013] Beneficial Effects
[0014] The utility model provides a short-protection tank type hydropower station energy dissipation pool structure, which has the following beneficial effects:
[0015] 1. The short-protected tank-type hydropower station energy dissipation pool structure, in this article, is cast with a concrete base on the surface of the foundation. After the water source is discharged, it will first impact the vortex groove, and the reflux movement is formed through the internal structure of the vortex groove, which allows the water source to fall again. The inner side of the vortex groove is more evenly stressed and is not easily damaged. After the water source is initially decelerated through the vortex groove, it can be tilted and guided through the first guide groove to make the water source enter the first deceleration groove, the second deceleration groove and the third deceleration groove. A circulation channel structure is formed inside the first deceleration groove, the second deceleration groove and the third deceleration groove, which allows the water source to flow back and forth left and right, and decelerate in turn. The impact pressure brought by the small water source itself, and the inner sides of the first deceleration groove, the second deceleration groove and the third deceleration groove are all evenly stressed and not easily damaged, and the buffer seats arranged inside the first deceleration groove, the second deceleration groove and the third deceleration groove can perform auxiliary diversion buffering through the buffer groove when the water source passes through, and the buffer seat can be moved and buffered by the supporting spring outside the limit rod during the impact, further reducing the pressure of the water source, and then discharged through the drainage guide groove, at this time, the impact pressure of the initial flow of the water source can be greatly reduced while ensuring its service life, thereby achieving the effect of improving the pressure resistance and deceleration of the water source and extending the overall service life of the concrete base.
[0016] 2. The short tank-type hydropower station energy dissipation pool structure has a diverter seat cast on one side of the drainage guide groove. When the water source passes through the first deceleration groove, the second deceleration groove and the third deceleration groove in sequence for diversion and deceleration and then is discharged through the drainage guide groove, the water source will flow through the diverter seat again. The second diversion groove on one side of the diverter seat can gather and divert the water source to the middle after contacting the water source, assisting in buffering, and then the water source with reduced pressure is diverted and discharged in sequence through multiple components of flow grooves, so that the water flow effect is controlled in a graded manner from the overall, and the water source pressure buffer is fully reduced, thereby achieving the auxiliary improvement of the water source energy dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0018] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0020] Figure 2 It is a partial schematic diagram of the first speed reduction groove of the utility model;
[0021] Figure 3 For this utility model Figure 2 A magnified view of middle;
[0022] Figure 4 It is a partial schematic diagram of the shunt seat of the utility model.
[0023] Legend:
[0024] 1. Foundation; 2. Concrete base; 3. Convolution groove; 4. First guide groove; 5. First deceleration groove; 6. Second deceleration groove; 7. Third deceleration groove; 8. Drainage guide groove; 9. Buffer seat; 10. Buffer groove; 11. Annular seat; 12. Limit hole; 13. Limit rod; 14. Support spring; 15. Limit plate; 16. Diverter seat; 17. Second guide groove; 18. Diverter groove; 19. Liquid inlet groove. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0026] Example: Short-protection tank type hydropower station stilling pool structure, such as Figure 1-Figure 4 As shown, it includes a foundation 1, a concrete base 2 is cast on the surface of the foundation 1, a whirlpool groove 3 is opened inside the concrete base 2, a liquid inlet groove 19 connected to the whirlpool groove 3 is opened on one side of the concrete base 2, a first guide groove 4 is opened on the inner side of the whirlpool groove 3, a first deceleration groove 5, a second deceleration groove 6 and a third deceleration groove 7 are opened inside the concrete base 2 for sequentially guiding and matching, a drainage guide groove 8 connected to the third deceleration groove 7 is opened on the other side of the concrete base 2, a buffer seat 9 is arranged on the inner sides of the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7, and an auxiliary water source guide groove 4 is opened inside the buffer seat 9. The deceleration buffer groove 10, the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7 are all equipped with an annular seat 11 on their inner sides, a limiting hole 12 is opened inside the annular seat 11, a limiting rod 13 penetrating the limiting hole 12 is installed on one side of the buffer seat 9, the outer sleeve of the limiting rod 13 is provided with a supporting spring 14 for buffering the buffer seat 9, a limiting plate 15 is installed on the end of the limiting rod 13, a diverter seat 16 is cast on the surface of the foundation 1, and a second guide groove 17 is opened on the diverter seat 16 facing the water flow side, the interior of the second guide groove 17 is an inward gathering structure, and the inner side of the second guide groove 17 is provided with equidistantly distributed diverter grooves 18.
[0027] Furthermore, the inner wall of the swirling groove 3 is an arc-shaped wall structure, the first guide groove 4 is a trapezoidal hollow structure, and the inner side of the first guide groove 4 is an inclined surface.
[0028] Furthermore, when the water source enters the inner side of the vortex groove 3 through the liquid inlet groove 19, the water source is in a diversion and vortex deceleration state through the inner wall of the vortex groove 3. When the water source enters the first guide groove 4 through the vortex groove 3, the inclined surface inside the first guide groove 4 of the water source is in a secondary guidance and deceleration state.
[0029] Furthermore, a circulation channel structure is formed inside the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7. When the water source passes through the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7, the water source is in a three-cycle reciprocating diversion and deceleration state.
[0030] Furthermore, when the water source passes through the second guide groove 17 , the water source passes through the multi-component flow groove 18 and is in a diversion and deceleration state.
[0031] The working principle of this utility model:
[0032] After the water source is discharged, it will first impact the vortex groove 3, and the reflux movement is formed through the internal structure of the vortex groove 3, which allows the water source to fall again. The inner side of the vortex groove 3 is more evenly stressed and not easily damaged. After the water source is initially decelerated by the vortex groove 3, it can be tilted and guided through the first guide groove 4 to make the water source enter the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7. A circulation channel structure is formed inside the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7, which allows the water source to reciprocate left and right, thereby reducing the impact pressure brought by the water source itself in turn, and the first deceleration groove 5 The inner sides of the second deceleration groove 6 and the third deceleration groove 7 are all evenly stressed and not easily damaged, and the buffer seat 9 arranged inside the first deceleration groove 5, the second deceleration groove 6 and the third deceleration groove 7 can perform auxiliary diversion buffering through the buffer groove 10 when the water source passes through. The buffer seat 9 can be moved and buffered by the support spring 14 outside the limit rod 13 during impact, thereby further reducing the pressure of the water source, and then discharging it through the drainage guide groove 8. At this time, the impact pressure of the initial flow of the water source can be greatly reduced while ensuring its service life, thereby improving the pressure resistance and deceleration effect on the water source and extending the overall service life of the concrete base 2.
[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A short-protection tank-type hydropower station stilling pool structure, comprising a foundation (1), characterized in that: A concrete base (2) is cast on the surface of the foundation (1), a whirlpool groove (3) is provided inside the concrete base (2), a liquid inlet groove (19) connected to the whirlpool groove (3) is provided on one side of the concrete base (2), a first flow guide groove (4) is provided on the inner side of the whirlpool groove (3), a first deceleration groove (5), a second deceleration groove (6) and a third deceleration groove (7) are provided inside the concrete base (2) for sequentially guiding and cooperating, and a liquid discharge guide groove (8) connected to the third deceleration groove (7) is provided on the other side of the concrete base (2).
2. The short tank-type hydropower station stilling pool structure according to claim 1 is characterized by: The inner wall of the gyration groove (3) is an arc-shaped wall structure, the first guide groove (4) is a trapezoidal hollow structure, and the inner side of the first guide groove (4) is an inclined surface.
3. The short-guard tank-type hydropower station stilling pool structure according to claim 2 is characterized by: When the water source enters the inner side of the vortex groove (3) through the liquid inlet groove (19), the water source is in a diversion vortex deceleration state through the inner wall of the vortex groove (3); when the water source enters the interior of the first diversion groove (4) through the vortex groove (3), the inner inclined surface of the first diversion groove (4) of the water source is in a secondary diversion deceleration state.
4. The short tank-type hydropower station stilling pool structure according to claim 1 is characterized by: A circulation channel structure is formed inside the first deceleration groove (5), the second deceleration groove (6) and the third deceleration groove (7). When the water source passes through the first deceleration groove (5), the second deceleration groove (6) and the third deceleration groove (7), the water source is in a three-cycle reciprocating flow diversion deceleration state.
5. The short tank-type hydropower station stilling pool structure according to claim 4 is characterized by: A buffer seat (9) is arranged inside the first deceleration groove (5), the second deceleration groove (6) and the third deceleration groove (7), and a buffer groove (10) for assisting water source diversion and deceleration is provided inside the buffer seat (9).
6. The short tank-type hydropower station stilling pool structure according to claim 5 is characterized by: An annular seat (11) is installed on the inner side of the first deceleration groove (5), the second deceleration groove (6) and the third deceleration groove (7), a limiting hole (12) is provided inside the annular seat (11), a limiting rod (13) penetrating the limiting hole (12) is installed on one side of the buffer seat (9), a supporting spring (14) for buffering the buffer seat (9) is sleeved on the outer side of the limiting rod (13), and a limiting plate (15) is installed on the end of the limiting rod (13).
7. The short tank-type hydropower station stilling pool structure according to claim 1 is characterized by: A flow diversion seat (16) is cast on the surface of the foundation (1), and a second flow diversion groove (17) is provided on the flow diversion seat (16) facing the water flow side, the interior of the second flow diversion groove (17) is an inwardly gathered structure, and the inner side of the second flow diversion groove (17) is provided with equally spaced flow diversion grooves (18).
8. The short tank-type hydropower station stilling pool structure according to claim 7 is characterized by: When the water source passes through the second guide groove (17), the water source passes through the multi-component flow groove (18) and is in a diversion and deceleration state.