Tower type water inlet and outlet exhaust overhauling device of pumped storage power station
By designing steel pipe section ventilation holes and L-shaped concrete ventilation holes in the opening and closing machine room of the tower water inlet and outlet, combining concrete cover plates and steel grille cover plates, the limited space and ventilation problems of opening and closing machine room are solved, and the effect of saving materials and increasing space utilization is achieved.
Patent Information
- Application Number
- CN202421967003.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-14
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-14
AI Technical Summary
The opening and closing room space of the tower-type water inlet and outlet is limited, and there are negative pressure of the bottom runner top arch, concrete cavitation and gate vibration problems, which affect the safe operation and maintenance of the equipment.
A tower-type water inlet and outlet exhaust maintenance device including a concrete cast gate tower main body and an opening and closing machine room is designed. By setting steel pipe section ventilation holes and L-shaped concrete ventilation holes in the main body of the gate tower, combined with the design of concrete cover plates and steel grille cover plates, the function and space utilization of ventilation holes are realized.
The length of steel pipes in the vent holes is reduced, steel and engineering investment is saved, the operation of the inlet and exhaust and opening and closing machine rooms is separated, safe operation is ensured, and the brick wall structure is cancelled, and the available space for opening and closing machine rooms is increased.
Smart Images
Figure CN223003365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an exhaust and maintenance device for the tower type water inlet and outlet of a pumped storage power station, belonging to the field of water conservancy and hydropower engineering. Background Technique
[0002] Pumped storage power stations are divided into side type water inlets / outlets and shaft type water inlets / outlets according to the relationship between the reservoir water flow and the intake channel. The side type water inlets / outlets can be further divided into: lateral shaft type, lateral slope type, and lateral (shore) tower type according to the layout position of the gate well (tower). The gate maintenance platform of the tower type water inlet / outlet is arranged on the top of the tower. Generally, a hoist machine room is arranged for maintaining and controlling the opening and closing of the gate. To save project investment, the overall space layout of the hoist machine room in the gate tower is relatively limited. To eliminate the negative pressure at the top arch of the bottom flow channel and reduce the influence of concrete cavitation and gate vibration, a ventilation hole leading directly to the hoist machine room is generally arranged on the upstream side of the gate. An independent brick wall structure needs to be set in the hoist machine room as a ventilation channel, making the layout space for cable trenches, switch cabinets, etc. in the hoist machine room extremely compact. In addition, according to past engineering experience, when the unit dumps load or in the case of pumping power failure, the surge in the gate well rises, and the air in the gate well and the hoist machine room is quickly compressed, easily damaging the doors, windows and equipment in the hoist machine room. Summary of the Invention
[0003] The purpose of the utility model is to overcome the defects existing in the prior art, and provide an exhaust and maintenance device for the tower type water inlet and outlet of a pumped storage power station, which has a simple layout, is convenient for construction, saves investment, is convenient for operation and maintenance, and increases the space utilization rate of the hoist machine room.
[0004] The technical solution of an exhaust and maintenance device for the tower type water inlet and outlet of a pumped storage power station of the utility model is: it includes a gate tower main body cast with concrete. An hoist machine room is arranged above the gate tower main body. A steel pipe is arranged in the gate tower main body, and a steel pipe section ventilation hole is formed in the steel pipe. An L-shaped concrete ventilation hole is arranged in the gate tower main body above the steel pipe. The L-shaped concrete ventilation hole is communicated with the steel pipe section ventilation hole. The L-shaped concrete ventilation hole is composed of a vertical section ventilation hole and a horizontal section ventilation hole. The vertical section ventilation hole and the steel pipe section ventilation hole are on the same center line. A concrete cover plate is arranged at the upper opening of the vertical section ventilation hole, and a steel grating cover plate is arranged at the side opening of the horizontal section ventilation hole.
[0005] Further, the L-shaped concrete ventilation hole is a rectangular hole, the steel pipe section ventilation hole is a circular hole, and the length L and width W of the L-shaped concrete ventilation hole are greater than the diameter φ of the steel pipe section ventilation hole.
[0006] Further, a concave platform is arranged in the gate tower main body at the upper opening of the vertical section ventilation hole, and anchor bolts are arranged in the concave platform. Through holes are arranged in the concrete cover plate, and the upper heads of the anchor bolts pass through the through holes and are threadedly connected with nuts.
[0007] The beneficial effects of the tower-type intake and outlet exhaust and maintenance device for a pumped storage power station of the present utility model are as follows: First, it reduces the length of the steel pipe in the entire ventilation hole, saves steel, and saves project investment; Second, by setting a concrete cover plate at the top of the L-shaped concrete ventilation hole, the intake and exhaust of the entire ventilation hole are separated from the operation of the hoist house, providing guarantee for the safe operation of the hoist house; Third, the interior brick wall of the hoist house is cancelled, increasing the available space in the hoist house. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] Figure 1 is a schematic structural diagram of the tower-type intake and outlet exhaust and maintenance device for a pumped storage power station of the present utility model;
[0009] Figure 2 is a top view schematic diagram of the gate tower main body. SPECIFIC EMBODIMENTS
[0010] The present utility model relates to a tower-type intake and outlet exhaust and maintenance device for a pumped storage power station. As Figure 1 — Figure 2 shown, it includes a gate tower main body 1 cast with concrete. An hoist house 20 is arranged above the gate tower main body 1. A steel pipe 2 is arranged in the gate tower main body 1, and a steel pipe section ventilation hole 3 is formed in the steel pipe 2. An L-shaped concrete ventilation hole 4 is arranged in the gate tower main body 1 above the steel pipe 2. The L-shaped concrete ventilation hole 4 communicates with the steel pipe section ventilation hole 3. The L-shaped concrete ventilation hole 4 is composed of a vertical section ventilation hole 5 and a horizontal section ventilation hole 6. The vertical section ventilation hole 5 and the steel pipe section ventilation hole 3 are on the same center line. A concrete cover plate 7 is arranged at the upper opening of the vertical section ventilation hole 5. A steel grating cover plate 8 is arranged at the side opening of the horizontal section ventilation hole 6.
[0011] Furthermore, the L-shaped concrete ventilation hole 4 is a rectangular hole, and the steel pipe section ventilation hole 3 is a circular hole. The length L and width W of the L-shaped concrete ventilation hole 4 are greater than the diameter φ of the steel pipe section ventilation hole 3. For the convenience of formwork pouring construction of the gate tower main body 1 and later personnel maintenance, the structural section of the L-shaped concrete ventilation hole 4 is designed as a rectangle, and the length L and width W of the rectangle are greater than the diameter φ of the bottom steel pipe 2.
[0012] Furthermore, a concave platform 9 is arranged in the gate tower main body 1 at the upper opening of the vertical section ventilation hole 5. Anchor bolts 10 are arranged in the concave platform 9. Through holes are arranged in the concrete cover plate 7. The upper ends of the anchor bolts 10 pass through the through holes and are threadedly connected with nuts 11. The concrete cover plate 7 is fixed by the anchor bolts 10 and nuts 11, which can prevent the air pressure from rising during the occurrence of surges from lifting the concrete cover plate 7.
[0013] The utility model discloses a tower-type water inlet and outlet exhaust inspection and maintenance device for a pumped storage power station. A gate tower body 1 is cast as a whole in a vertical mold manner. To ensure the casting quality of concrete, the concrete is cast in a bin of 3m, and the welding and installation construction of a steel pipe 2 is carried out simultaneously, so that a steel pipe section vent hole 3 is formed in the steel pipe 2. When the concrete is cast to the position of a steel grille cover plate, a concrete inner mold is added, and concrete is continuously cast outside the concrete inner mold, and an L-shaped concrete vent hole 4 is formed in the concrete inner mold. When the horizontal section vent hole 6 of the L-shaped concrete vent hole 4 is cast, a lateral steel grille cover plate 8 is constructed, and the cover plate is fixed with a stud. When the concrete is about to be cast to the height of a maintenance platform 12 of the gate body 1, a concave platform 9 with a size of 30cm-50cm is reserved at the upper mouth of the vertical section vent hole 5, and anchor bolts 10 are pre-buried in the concave platform 9, and anchor bolts 10 are pre-buried in the concrete cover plate 7. Holes are drilled around the gate tower 1, and the concrete cover plate 7 is set in the concave platform 9. The anchor bolts 10 pass through the holes, and the concrete cover plate 7 is fixed by nuts 11 and gaskets. After the gate tower body 1 is poured, a hoisting and closing machine room 20 is set above the gate tower body 1, and the hoisting and closing machine room 20 is fixed by columns around it; wherein the L-shaped concrete vent 4 is parallel to the center line 13 of the gate tower slot, and is arranged upstream of the maintenance gate, and the horizontal section vent 6 of the L-shaped concrete vent 4 is connected to the outside air from the side of the gate tower body 1. To meet the ventilation function, the area of the L-shaped concrete vent 4 and the steel pipe section vent 3 is selected according to 4%-9% of the area of the water pipeline upstream of the gate, and the vertical section vent 5 of the L-shaped concrete vent 4 coincides with the center line of the steel pipe section vent 3. To prevent the reservoir water from flowing back into the vent after the downstream reservoir water level is raised, the outlet bottom plate height of the horizontal section vent 6 needs to be higher than the verified flood level. The present invention provides a tower-type water inlet and outlet exhaust inspection and maintenance device for a pumped-storage power station. Firstly, the length of the steel pipe 2 in the entire vent hole is reduced, thus saving steel materials and engineering investment. Secondly, by providing a concrete cover plate 7 on the top of the L-shaped concrete vent hole 4, the air inlet and outlet of the entire vent hole and the operation of the hoisting and shutting machine room 20 are separated, thus providing a guarantee for the safe operation of the hoisting and shutting machine room 20. Thirdly, the indoor brick wall of the hoisting and shutting machine room 20 is eliminated, thus increasing the available space of the hoisting and shutting machine room 20.
Claims
1. A tower-type water inlet and outlet exhaust inspection and maintenance device for a pumped storage power station, characterized in that: The invention comprises a gate tower body (1) cast in concrete, wherein a hoisting and shutting machine room (20) is arranged above the gate tower body (1), a steel pipe (2) is arranged in the gate tower body (1), a steel pipe section vent (3) is formed in the steel pipe (2), an L-shaped concrete vent (4) is arranged in the gate tower body (1) located above the steel pipe (2), the L-shaped concrete vent (4) is communicated with the steel pipe section vent (3), the L-shaped concrete vent (4) is composed of a vertical section vent (5) and a horizontal section vent (6), the vertical section vent (5) and the steel pipe section vent (3) are located on the same center line, a concrete cover plate (7) is arranged at the upper opening of the vertical section vent (5), and a steel grille cover plate (8) is arranged at the side opening of the horizontal section vent (6).
2. A tower-type water inlet and outlet exhaust inspection and maintenance device for a pumped storage power station as claimed in claim 1, characterized in that: The L-shaped concrete vent hole (4) is a rectangular hole, the steel pipe section vent hole (3) is a circular hole, and the length L and width W of the L-shaped concrete vent hole (4) are greater than the diameter φ of the steel pipe section vent hole (3).
3. A tower-type water inlet and outlet exhaust inspection and maintenance device for a pumped storage power station as claimed in claim 1, characterized in that: A recessed platform (9) is provided in the gate tower body (1) located at the upper opening of the vertical section vent hole (5), and an anchor bolt (10) is provided in the recessed platform (9). A through hole is provided in the concrete cover plate (7), and the upper end of the anchor bolt (10) passes through the through hole and is threadedly connected to a nut (11).