Cylindrical gate structure

Abstract

The present invention relates to a cylindrical gate structure. The purpose of the present invention is a vertical shaft water inlet cylindrical gate structure to solve the problem of unbalanced water load and reduce the required opening and closing force. The technical solution of the present invention is: a cylindrical gate structure, characterized in that: it has a gate chamber, a plurality of water inlets connected to the gate chamber are evenly arranged around the gate chamber, the lower end of the gate chamber is provided with a water outlet connected thereto, and the lower end of the gate chamber is provided with a gate well connected thereto. The present invention is applicable to the field of hydraulic steel gates.

Description

Technical Field

[0001] The invention relates to a cylindrical gate structure, which is applicable to the field of hydraulic steel gates. Background Art

[0002] The water-retaining feature of traditional flat gates or arc gates is mostly to block the water flow in the horizontal cavern. The huge unbalanced water load acts on the front side of the gate panel, and the load is fully transferred to the gate slot track structure through the supporting slider set on the gate. The gate itself is mostly a beam-column welded structure with a large deadweight, and the friction between the gate and the gate slot track is large, requiring a large opening and closing force. Summary of the invention

[0003] The technical problem to be solved by the present invention is: in view of the above-mentioned existing problems, a vertical shaft type water inlet cylindrical gate structure is provided to solve the problem of unbalanced water load and reduce the required opening and closing force.

[0004] The technical solution adopted by the present invention is: a cylindrical gate structure, characterized in that: it has a gate chamber, a plurality of water inlets connected to the gate chamber are evenly arranged around the gate chamber, a water outlet connected to the gate chamber is arranged at the lower end of the gate chamber, and a gate well connected to the gate chamber is arranged at the lower end of the gate chamber;

[0005] The gate chamber is provided with a cylindrical gate capable of blocking each water inlet connected to the gate chamber, and the upper end of the cylindrical gate is connected to an opening and closing mechanism located in the gate well for opening and closing, lifting or lowering the cylindrical gate.

[0006] The lower end of the gate shaft is provided with a gate through hole whose shape and size are compatible with the cylindrical gate, a circle of supporting steps is formed above the gate through hole, and the upper end of the cylindrical gate is provided with a supporting mechanism;

[0007] When the cylindrical gate completely blocks the water inlet, the supporting mechanism in the opening and closing mechanism is supported on the supporting steps on the inner wall of the gate shaft.

[0008] The supporting mechanism comprises a supporting ring which is arranged on the upper end of the outer wall of the cylindrical gate.

[0009] The upper end of the cylindrical gate is provided with a guide mechanism which is matched with the inner wall of the gate well and can move axially along the gate well.

[0010] The guide mechanism includes a plurality of gate guide grooves evenly formed on the inner wall of the gate well and arranged parallel to the axial direction of the gate well, and a truss guide structure connected to the upper end of the cylindrical gate, and the truss guide structure is provided with guide blocks corresponding to the gate guide grooves one by one.

[0011] A smooth transition surface is formed on the inner wall of the lower part of the gate chamber and between the water inlet and the water outlet, and a guiding and positioning mechanism matched with the smooth transition surface is formed at the lower end of the cylindrical gate.

[0012] The guiding and positioning mechanism is formed by turning the lower end of the cylindrical gate inwardly.

[0013] The opening and closing mechanism comprises an opening and closing machine arranged at the upper end of the gate shaft and a multi-section pull rod connected to the opening and closing machine, and the opening and closing machine is connected to the cylindrical gate below via the pull rod.

[0014] The beneficial effects of the present invention are as follows: the present invention evenly arranges a number of water inlets around the gate chamber, and arranges a cylindrical gate adapted thereto. The cylindrical gate itself bears annular water load in the annular direction, and fully utilizes its own cylindrical arch shell effect to replace the beam-column structure of the traditional gate to bear all water loads. The resultant force of the water load along the annular direction is zero, and the opening and closing mechanism basically only needs to overcome the gravity of the cylindrical gate itself to complete the opening and closing of the gate. Therefore, the opening and closing force of the gate opening and closing equipment only needs to consider the gate's own weight plus the designed safety margin, which greatly reduces the opening and closing force.

[0015] The cylindrical gate of the present invention is a hollow structure, which has sufficient air permeability during the opening and closing process, so that this type of gate type has good anti-vibration performance during dynamic water opening and closing. Due to the hollow structure of the cylindrical gate, after the gate blocks water at the lower door, air can pass through the gate well through the hollow part of the gate body to replenish air to the outlet flow channel below, and the civil structure does not need to arrange additional air replenishment holes.

[0016] The present invention does not need to set a concave or convex gate groove structure in the flow channel, the entire flow channel is smooth and barrier-free, and turbulence will not be formed. The cylindrical gate structure conforms to the flow state of water well, reduces head loss, and improves the efficiency of water diversion and power generation.

[0017] In the present invention, since there is almost no large concentrated force interaction between the gate body and the gate slot, the gate can maintain a very good water sealing state under the action of its own weight. In view of the good flow state and very small supporting force of the present invention, the maintenance frequency of the gate's supporting parts, water sealing parts, and gate slot embedded parts can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an embodiment.

[0019] Figure 2 Schematic diagram of the structure of the gate chamber in the embodiment.

[0020] Figure 3 for Figure 2 AA section view.

[0021] Figure 4 for Figure 2 Middle BB section view.

[0022] Figure 5 for Figure 2 Middle CC section view.

[0023] In the figure: 1. Gate chamber; 2. Water inlet; 3. Water outlet; 4. Gate well; 5. Cylindrical gate; 6. Gate through hole; 7. Support step; 8. Support ring; 9. Gate guide groove; 10. Guide block; 11. Smooth transition surface; 12. Hoist; 13. Pull rod; 14. Top water seal; 15. Bottom water seal; 16. Inner ring cylinder; 17. Annular rib; 18. Longitudinal rib; 19. Hoist room; 20. Truss guide structure; 21. Guide positioning mechanism; 22. Support rod. DETAILED DESCRIPTION

[0024] This embodiment is a cylindrical gate structure having a gate chamber. Six water inlets are evenly arranged around the gate chamber. The six water inlets are evenly radially distributed around the gate chamber. The water inlets are arranged obliquely downward from one end to the end connected to the gate chamber.

[0025] In this example, a water outlet arranged vertically and connected to the gate chamber is provided at the lower end of the gate chamber, and a smooth transition surface is formed between the water inlet and the water outlet below the gate chamber on the inner wall of the lower part of the gate chamber. A gate well arranged vertically and connected to the gate chamber below is provided at the upper end of the gate chamber, and a gate through hole with a diameter slightly smaller than the inner diameter of the gate well is formed at the lower end of the gate well, and a circle of supporting steps is formed between the gate well and the gate through hole.

[0026] In this embodiment, a cylindrical gate is provided in the gate chamber. The diameter of the cylindrical gate is slightly larger than the diameter of the water outlet and slightly smaller than the diameter of the gate through hole. The inner wall of the cylindrical gate is provided with circumferential ribs and longitudinal ribs. The lower end of the cylindrical gate is provided with a guide positioning mechanism adapted to the smooth transition surface. The guide positioning mechanism is formed by turning the lower end of the cylindrical gate inward. The upper end of the cylindrical gate is provided with a circle of support rings that can cooperate with the supporting steps. In this embodiment, a circle of top water seal is provided on the outer wall of the upper part of the cylindrical gate, and a circle of bottom water seal is provided on the outer wall of the guide positioning mechanism at the lower end of the cylindrical gate.

[0027] In this embodiment, a truss guide structure located in the gate well is connected to the upper end of the cylindrical gate, and a plurality of guide blocks facing the inner wall of the gate well are evenly formed on the truss guide structure. A gate guide groove is provided on the inner wall of the gate well corresponding to the guide blocks. The gate guide groove is arranged parallel to the axial direction of the gate well, and the guide block can move along the gate guide groove in the gate guide groove.

[0028] In this example, the truss guide structure has an inner ring cylinder arranged coaxially and concentrically with the lower cylindrical gate. The lower end of the inner ring cylinder extends into the cylindrical gate and is connected to the inner wall of the cylindrical gate via a plurality of support rods arranged along the inner diameter of the cylindrical gate.

[0029] In this embodiment, a gate hoist room is provided at the upper end of the gate shaft, and a gate hoist is provided in the gate hoist room. The gate hoist is connected to the inner ring cylinder in the truss guide structure in the gate shaft below via a multi-section pull rod.

[0030] The working principle of this embodiment is as follows:

[0031] When the gate is in water-blocking working condition, the lower end of the cylindrical gate is positioned by the guiding and positioning mechanism in cooperation with the smooth transition surface at the bottom of the gate chamber, and the bottom water seal at the lower end of the cylindrical gate contacts the smooth transition surface to achieve water blocking; the upper end of the cylindrical gate is supported on the supporting step at the lower end of the gate shaft through a support ring, and the top water seal at the upper end of the cylindrical gate contacts the inner wall of the gate through hole to achieve water blocking.

[0032] In this embodiment, the gate is supported by a hanging type under the water-retaining condition, and its supporting force is only the gate's own weight. Different from the ultra-high pressure borne by the supporting components of conventional gates under high water head, the supporting components and their corresponding gate leaves and gate slot components can be simplified, effectively reducing the cost. The cylindrical gate itself bears the annular water load in the annular direction, making full use of its own cylindrical arch shell effect to replace the beam-column structure of the traditional gate to bear all water loads, and the water load is zero in the annular direction. The resultant force of the upward force formed by the water pressure at the top water seal of the cylindrical gate and the downward pressure formed at the bottom water seal is also almost zero.

[0033] When the gate is opened, the hoist lifts the cylindrical gate through the multi-section pull rod, the cylindrical gate moves upward into the gate well, and the water inlet is connected to the water outlet below the gate chamber through the gate chamber.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylindrical gate structure, characterized in that: A gate chamber (1) is provided, a plurality of water inlets (2) connected to the gate chamber (1) are evenly arranged around the gate chamber (1), a water outlet (3) connected to the gate chamber (1) is provided at the lower end of the gate chamber (1), and a gate well (4) connected to the gate chamber (1) is provided at the upper end of the gate chamber (1); The gate chamber (1) is provided with a cylindrical gate (5) capable of blocking each water inlet (2) connected to the gate chamber, and the upper end of the cylindrical gate (5) is connected to an opening and closing mechanism located in the gate well (4) for opening and closing, lifting or lowering the cylindrical gate (5); The lower end of the gate well (4) is provided with a gate through hole (6) whose shape and size are compatible with the cylindrical gate (5), a circle of supporting steps (7) is formed above the gate through hole (6), and the upper end of the cylindrical gate (5) is provided with a supporting mechanism; When the cylindrical gate (5) completely blocks the water inlet (2), the support mechanism at the upper end of the cylindrical gate (5) is supported on the support step (7) on the inner wall of the gate well (4); The support mechanism comprises a support ring (8) which is arranged on the upper end of the outer wall of the cylindrical gate (5); A smooth transition surface (11) is formed on the inner wall of the lower part of the gate chamber (1) and between the water inlet (2) and the water outlet (3), and a guide positioning mechanism (21) adapted to the smooth transition surface (11) is formed at the lower end of the cylindrical gate (5); The guiding and positioning mechanism (21) is formed by inwardly turning the lower end of the cylindrical gate (5).

2. The cylindrical gate structure according to claim 1, characterized in that: The upper end of the cylindrical gate (5) is provided with a guide mechanism which is matched with the inner wall of the gate well (4) and can move axially along the gate well (4).

3. The cylindrical gate structure according to claim 2, characterized in that: The guide mechanism comprises a plurality of gate guide grooves (9) uniformly formed on the inner wall of the gate well (4) and arranged parallel to the axial direction of the gate well (4), and a truss guide structure (20) connected to the upper end of the cylindrical gate (5), and the truss guide structure (20) is provided with guide blocks (10) corresponding one to one with the gate guide grooves (9).

4. The cylindrical gate structure according to claim 1, characterized in that: The opening and closing mechanism comprises an opening and closing machine (12) arranged at the upper end of the gate shaft (4) and a multi-section pull rod (13) connected to the opening and closing machine (12); the opening and closing machine (12) is connected to the cylindrical gate (5) below via the pull rod (13).

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