Pressure regulating chamber arrangement structure with gate shaft function
By setting up the inner gate pier and the upper opening and closing structure inside the vertical shaft of the pressure regulating chamber of the hydropower station, combined with the cantilever structure, the integration of the functions of the pressure regulating chamber and the gate well is achieved, and the problems of engineering investment and difficulty in conventional layout types are solved, and the implementation of the realization of the problem of The compact and fully functional arrangement reduces engineering volume and investment.
Patent Information
- Application Number
- CN202420501066.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-14
AI Technical Summary
In hydropower stations, conventional pressure regulating chambers and gate well layout types require excavation, support and concrete structure layout of two larger vertical shafts, resulting in increased project investment and increased layout difficulty.
A pressure regulating chamber layout structure with gate well functions is adopted, including a pressure regulating chamber shaft, a gradient section in front of the well, a seat section, a gradient section behind the well, an in-well gate pier and an on-well opening and closing structure. The inner gate piers and upper opening and closing structures are installed inside the well, and combined with the cantilever structure, the functional integration of the gate well and the pressure regulating chamber is achieved.
The compact layout of the pressure regulating chamber and gate well functions is realized, reducing the construction of a vertical shaft and its slope, reducing the layout difficulty and engineering volume, saving investment, and providing complete protection for water supply pipelines and units to ensure that The operation of the power station is safe.
Smart Images
Figure CN222500158U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of arrangement of surge chambers in water conservancy and hydropower projects, in particular to a surge chamber arrangement structure having gate well functions. Background Art
[0002] The surge chamber is a commonly used structural form for protecting units and water pipelines in the water supply system of a hydropower station. Most hydropower stations are built in high mountain valleys. Finding a location to arrange the water diversion surge chamber is a key problem that needs to be solved in the project, especially for large-flow power stations. The arrangement of a large-diameter surge chamber has also become an inevitable requirement of the project. If the conventional surge chamber and gate well arrangement type is adopted, in addition to the surge well, it is necessary to find another terrain location suitable for arranging the gate well. The excavation, support and concrete structure arrangement of the two larger shafts increase the project investment and greatly increase the difficulty of project arrangement. Utility Model Content
[0003] The purpose of the utility model is to provide a pressure regulating chamber arrangement structure having the function of a gate well, so as to solve the above-mentioned problems existing in the prior art.
[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:
[0005] A surge chamber arrangement structure with gate shaft function, comprising a surge chamber shaft, a shaft front gradient section, a shaft seat section, a shaft rear gradient section, a shaft gate pier and a shaft opening and closing structure; the shaft seat section is arranged at the bottom of the surge chamber shaft, the shaft front gradient section and the shaft rear gradient section are respectively arranged at the upstream side and the downstream side of the bottom of the surge chamber shaft, the two ends of the shaft front gradient section are respectively connected to the upstream tunnel and the shaft seat section, and the two ends of the shaft rear gradient section are respectively connected to the shaft seat section and the downstream tunnel; the shaft gate pier is arranged at a position inside the surge chamber shaft close to the shaft rear gradient section, the shaft opening and closing structure is arranged at the top of the surge chamber shaft and the shaft gate pier, and the portion of the shaft opening and closing structure exceeding the outer contour range of the shaft gate pier and the surge chamber shaft adopts a cantilever structure.
[0006] Preferably, the surge chamber shaft is a cylindrical concrete structure with a hollow interior; the open-air portion of the surge chamber shaft is later closed with a cover plate, and a ventilation cover plate is left.
[0007] Preferably, the size of the gate pier in the shaft is smaller than the inner contour size of the vertical shaft of the surge chamber.
[0008] Preferably, the gate pier in the well and the opening and closing structure above the well are arranged on the downstream side of the vertical shaft of the pressure regulating chamber.
[0009] Preferably, the well seat section is a square structure, and its size matches the size of the gate pier in the well.
[0010] Preferably, the front gradient section is a circular-to-square gradient section, the circular size matches the size of the upstream tunnel, and the square size matches the size of the well seat section.
[0011] Preferably, the rear gradient section is a square-to-circular gradient section, the size of the square matches the size of the well seat section, and the size of the circle matches the size of the downstream tunnel.
[0012] Preferably, the above-well opening and closing structure is integrally cast with the pressure-regulating chamber shaft and the gate pier in the well.
[0013] The beneficial effects of the utility model are as follows: 1. The layout type of gate well and surge chamber is compact and fully functional, which meets the requirements of regulation guarantee and water pipeline maintenance, provides perfect protection for water pipeline and unit, provides convenient conditions for tunnel maintenance, and ensures the safe operation of power station. 2. The construction of a vertical shaft and its slope is reduced, which reduces the difficulty of layout, saves engineering work and investment. 3. It can be widely used in the layout of surge chambers of large-flow hydropower stations in mountainous and canyon areas. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a plan view of the arrangement structure of the pressure regulating chamber in the embodiment of the utility model;
[0015] Figure 2 It is a vertical view of the arrangement structure of the pressure regulating chamber in the embodiment of the utility model;
[0016] Figure 3 This is a layout diagram of the vertical shaft platform of the surge chamber in the embodiment of the utility model;
[0017] Figure 4 It is a vertical view of the well opening and closing mechanism in the embodiment of the utility model.
[0018] In the figure: 1. Surge chamber shaft; 2. Gate pier in the shaft; 3. Shaft seat section; 4. Front gradient section; 5. Rear gradient section; 6. Opening and closing structure above the shaft. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.
[0020] Embodiment 1
[0021] like Figures 1 to 4As shown, in this embodiment, a surge chamber arrangement structure with gate shaft function is provided, including a surge chamber shaft 1, a shaft front gradient section 4, a shaft seat section 3, a shaft rear gradient section 5, a shaft gate pier 2 and a shaft opening and closing structure 6; the shaft seat section 3 is arranged at the bottom of the surge chamber shaft 1, the shaft front gradient section 4 and the shaft rear gradient section 5 are respectively arranged at the upstream side and the downstream side of the bottom of the surge chamber shaft 1, the two ends of the shaft front gradient section 4 are respectively connected to the upstream tunnel and the shaft seat section 3, and the two ends of the shaft rear gradient section 5 are respectively connected to the shaft seat section 3 and the downstream tunnel; the shaft gate pier 2 is arranged at a position inside the surge chamber shaft 1 close to the shaft rear gradient section 5, the shaft opening and closing structure 6 is arranged at the top of the surge chamber shaft 1 and the shaft gate pier 2, and the part of the shaft opening and closing structure 6 that exceeds the outer contour range of the shaft gate pier 2 and the surge chamber shaft 1 adopts a cantilever structure.
[0022] In this embodiment, the surge chamber shaft 1 is a cylindrical concrete structure with a hollow interior; the open-air portion of the surge chamber shaft 1 is later closed with a cover plate, and a ventilation cover plate is left.
[0023] In this embodiment, the size of the gate pier 2 in the well is smaller than the inner contour size of the surge chamber shaft 1. The gate pier 2 in the well and the well opening and closing structure 6 are arranged on the downstream side of the surge chamber shaft 1.
[0024] In this embodiment, the well seat section 3 is a square structure, and its size matches the size of the gate pier 2 in the well.
[0025] The well front gradual change section 4 is a circular to square gradual change section, the circular size matches the size of the upstream tunnel, and the square size matches the size of the well seat section 3. The well back gradual change section 5 is a square to circular gradual change section, the square size matches the size of the well seat section 3, and the circular size matches the size of the downstream tunnel.
[0026] In this embodiment, the above-well opening and closing structure 6 is integrally cast with the surge chamber shaft 1 and the gate pier 2 in the well.
[0027] Embodiment 2
[0028] In this embodiment, a hydropower station project is taken as an example to illustrate the layout structure of the utility model in combination with the accompanying drawings:
[0029] In a hydropower station project, the mountains in the project area are steep. There is only one suitable location along the water supply system to arrange the surge chamber, and there is no terrain nearby to arrange the gate well. If the gate well is not arranged, it will be impossible to carry out segmented maintenance on the water supply system that is more than ten kilometers long, which will bring certain troubles to the maintenance and cannot further protect the unit; if the gate well is set up, it will face the construction of high and steep terrain, excavation of high slopes, etc., and there will be great safety risks in the construction, and it will also greatly increase the amount of work and investment. In order to meet the functions of the gate well and the surge chamber under the existing conditions, considering the operating conditions, an emergency gate is set in the surge chamber, with an orifice size of 4.0×4.7m, and the gate is opened and closed by a winch. The layout structure of the utility model with both the gate well and the surge chamber functions is adopted. The cross section of the surge chamber shaft 1 is a circular shaft with an inner diameter of 17.0m and an impedance port diameter of 3.0m. The top elevation of the surge chamber shaft 1 is 2180.0m. The gate pier 2 in the shaft is 1.5m thick and the shaft height is 60.0m. It is arranged inside the surge chamber shaft 1. The gate pier 2 in the shaft and the hoisting and closing structure 6 on the shaft are arranged on the downstream side of the surge chamber shaft 1. The hoisting and closing structure 6 on the shaft is arranged at the top of the surge chamber shaft 1 with an elevation of 2180.0m. Since the upper range of the hoisting and closing machine structure on the shaft exceeds the outer contour of the surge chamber shaft 1 and the gate pier 2 in the shaft, in order not to increase the size of the surge chamber shaft 1 and the gate pier 2 in the shaft, the upper structure of the hoisting and closing machine structure 6 on the shaft adopts a cantilever beam structure and is cast integrally with the surge chamber shaft 1 and the gate pier 2 in the shaft. The bottom of the surge chamber shaft 1 is a square well seat section 3 and a front gradient section 4 and a rear gradient section 5. The square well seat section 3 is connected to the front gradient section 4 and the rear gradient section 5 respectively. The front gradient section 4 and the rear gradient section 5 are connected to the upstream and downstream tunnels respectively.
[0030] By adopting the above technical solution disclosed in the utility model, the following beneficial effects are obtained:
[0031] The utility model provides a surge chamber layout structure with gate well function. It adopts a layout type combining gate well and surge chamber, which is compact and fully functional. It meets the requirements of regulation guarantee and water pipeline maintenance, provides perfect protection for water pipeline and unit, provides convenient conditions for tunnel maintenance, and ensures the safe operation of power station. It reduces the construction of a vertical shaft and its slope, reduces the difficulty of layout, saves engineering and investment. It can be widely used in the layout of surge chambers of large-flow hydropower stations in mountainous and canyon areas.
[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.
Claims
1. A surge chamber arrangement structure with gate well function, characterized in that: It includes a surge chamber shaft, a shaft front gradient section, a shaft seat section, a shaft rear gradient section, a shaft gate pier and a shaft opening and closing structure; the shaft seat section is arranged at the bottom of the surge chamber shaft, the shaft front gradient section and the shaft rear gradient section are respectively arranged at the upstream side and the downstream side of the bottom of the surge chamber shaft, the two ends of the shaft front gradient section are respectively connected to the upstream tunnel and the shaft seat section, and the two ends of the shaft rear gradient section are respectively connected to the shaft seat section and the downstream tunnel; the shaft gate pier is arranged at a position close to the shaft rear gradient section inside the surge chamber shaft, the shaft opening and closing structure is arranged on the top of the surge chamber shaft and the shaft gate pier, and the part of the shaft opening and closing structure that exceeds the outer contour range of the shaft gate pier and the surge chamber shaft adopts a cantilever structure.
2. The pressure regulating chamber arrangement structure with gate well function according to claim 1 is characterized in that: The surge chamber shaft is a cylindrical concrete structure with a hollow interior; the open-air portion of the surge chamber shaft is later closed with a cover plate, and a ventilation cover plate is left.
3. The pressure regulating chamber arrangement structure with gate well function according to claim 1 is characterized in that: The size of the gate pier in the well is smaller than the inner contour size of the vertical well of the surge chamber.
4. The pressure regulating chamber arrangement structure with gate well function according to claim 1 is characterized in that: The gate pier in the well and the opening and closing structure above the well are arranged on the downstream side of the vertical shaft of the pressure regulating chamber.
5. The pressure regulating chamber arrangement structure with gate well function according to claim 1 is characterized in that: The well seat section is a square structure, and its size matches the size of the gate pier in the well.
6. The pressure regulating chamber arrangement structure with gate well function according to claim 5 is characterized in that: The well front gradual transition section is a circular to square gradual transition section, the circular size matches the upstream tunnel size, and the square size matches the size of the well seat section.
7. The pressure regulating chamber arrangement structure with gate well function according to claim 5 is characterized in that: The post-well gradient section is a square-to-circular gradient section, the size of the square matches the size of the well seat section, and the size of the circle matches the size of the downstream tunnel.
8. The pressure regulating chamber arrangement structure with gate well function according to claim 1 is characterized in that: The opening and closing structure on the well is cast integrally with the vertical shaft of the pressure regulating chamber and the gate pier in the well.