CN221000908U - Gate applied to fishway upstream outlet - Google Patents

Abstract

A gate applied to an upstream outlet of a fishway belongs to the field of hydraulic engineering environmental protection. Comprising the following steps: the floating body door, the door shaft, the water seal, the inner baffle, the bottom half-barrel-shaped floating body, the outer baffle and the door back curved surface; an inlet curved surface; a water pump is filled and discharged; the floating body door is fixed on the door shaft and rotates around the door shaft; the water seal is fixed on the baffle plate in the floating body door; the bottom half-barrel-shaped floating body comprises a half barrel and a plane for sealing the barrel, and a floating body door is fixed on the plane. The utility model has the beneficial effects that: providing a flow rate shield for fish to swim out of the fishway; the gate of the utility model is convenient to use and rapid to dispatch by the water filling and draining switch.

Description

Gate applied to fishway upstream outlet

Technical Field

The utility model discloses a gate applied to an upstream outlet of a fishway, which is used for the construction of fish passing facilities of hydraulic and hydroelectric engineering and belongs to the field of environmental protection of hydraulic engineering.

Background

The outlet at the upstream of the fishway is also the inlet of water flow in the fishway. When the upstream water level frequently changes, particularly when the fluctuation range exceeds the fishway depth, the fishway water inlet needs to be subjected to gate scheduling. Frequent water level changes can present significant difficulties in gate scheduling. The scheduling according to the water level is usually to install a water level sensor and connect the water level sensor with the operation device of the floodgate. In general, the fishway is separated from the other gates in dispatching due to no flood control and power generation. Often an independent small gate schedule. At this time, the mode of feedback scheduling of the water level sensor and the gate operation device is adopted, so that the cost and the operation uncertainty are increased.

Conventional flat or curved doors are all gradually opened upwards from the bottom. When the gate is in a half-open state for controlling the flow rate, the flow rate between the gate and the gate bottom plate is high, and it is difficult for fish to swim upstream through this flow rate region. The fishway requires a novel gate so that the flow rate of water entering the fishway is not too high and the fishway has a certain shielding property for fish.

Disclosure of utility model

The utility model discloses a gate applied to an upstream outlet of a fishway, which aims to: 1) The scheduling difficulty is reduced, so that the gate on the upstream of the fishway can be rapidly scheduled according to the water level condition; 2) The gate overcomes the defect of the existing gate on the upstream of the fishway, and shields the fishes, thereby facilitating the swimming of the fishes.

The specific technical scheme is as follows:

A gate for use at an outlet upstream of a fishway, comprising: the floating body door, the door shaft, the water seal, the inner baffle, the bottom half-barrel-shaped floating body, the outer baffle and the door back curved surface; an inlet curved surface; a water pump is filled and discharged;

The floating body door is fixed on the door shaft and rotates around the door shaft; the water seal is fixed on the baffle plate in the floating body door; the bottom semi-barrel-shaped floating body comprises a semi-barrel and a plane for sealing the barrel, and a floating body door is fixed on the plane;

The inner baffle is welded on the arc surface of the bottom half-barrel-shaped floating body, and the outer baffle is welded at the joint of the arc surface and the plane of the bottom half-barrel-shaped floating body;

The water filling and draining pump is arranged inside the bottom half-bucket floating body, drains water when the door is opened, and fills water when the door is closed.

The inner baffle plate provides positive pressure for the water seal to limit water leakage of the water seal; the inner baffle plate and the water seal jointly act to seal the gap at the bottom of the gate when the gate is closed.

The back curved surface of the door is a steel plate curved surface, a quarter arc surface, the inlet curved surface is also a steel plate curved surface, and a quarter arc surface; the combined action of the two curved surfaces makes it possible to obtain the shape of the water line of the SMX when the shutter is lying down. The water line allows the fish to easily leave the fishway along the bottom of the fishway through the gate section.

When the water level drops to the door opening water level of the floating body door, the water body in the bottom half-barrel floating body is discharged by the water filling and discharging pump, the bottom half-barrel floating body is lighter, the buoyancy is increased, the floating body door is overturned outwards around the door shaft, at the moment, the bottom is overturned inwards and upwards and is clamped at the position of the outer baffle of the bottom door frame, and the floating body door is in a horizontal opening state;

When the water level rises to the water level of the closed floating body door, the water filling and draining pump fills the bottom half-bucket floating body with water, at the moment, the bottom is downwards and outwards reversed and clamped at the baffle position in the bottom door frame, and the floating body door is in a vertical closing state.

The utility model has the beneficial effects that: 1, the design of the semi-barrel-shaped floating body at the bottom of the gate provides the flow velocity for fish to swim out of a fishway

Shielding;

2, the gate of the utility model is convenient to use and rapid to dispatch by the water filling and draining switch.

Drawings

FIG. 1 is a schematic cross-sectional view of the utility model in a door-open state, wherein SMX is the water surface line of the outlet of the fishway;

FIG. 2 is a schematic cross-sectional view of the utility model in a closed state, W is the inner water surface;

fig. 3 is an enlarged view of part of fig. 2 of the present utility model.

Detailed Description

The utility model will now be further described with reference to the accompanying drawings.

Example 1

A gate for use at an outlet upstream of a fishway, comprising: the door comprises a floating body door 1, a door shaft 2, a water seal 3, an inner baffle 4, a bottom semi-barrel-shaped floating body 5, an outer baffle 6 and a door back curved surface 7; an inlet curved surface 8; a water filling and draining pump 9;

The floating body door 1 is fixed on the door shaft 2 and rotates around the door shaft 2; the water seal 3 is fixed on a baffle plate 4 in the floating body door 1; the bottom semi-barrel-shaped floating body 5 comprises a semi-barrel and a plane for sealing the barrel, and a floating body door 1 is fixed on the plane;

the inner baffle plate 4 is welded on the arc surface of the bottom half-barrel-shaped floating body 5, and the outer baffle plate 6 is welded at the joint of the arc surface and the plane of the bottom half-barrel-shaped floating body 5;

the door back curved surface 7 is a steel plate curved surface, a quarter arc surface, the inlet curved surface 8 is also a steel plate curved surface, and a quarter arc surface; the combined action of the two curved surfaces makes it possible to obtain the shape of the water line of the SMX when the shutter is lying down. The water line allows the fish to easily leave the fishway along the bottom of the fishway through the gate section.

The water filling and draining pump 9 is arranged inside the bottom half-bucket floating body 5, drains water when the door is opened, and fills water when the door is closed.

The inner baffle 4 provides positive pressure for the water seal 3 to limit water leakage of the water seal 3; the inner baffle 4 and the water seal 3 jointly act to seal the gap at the bottom of the gate when the gate is closed.

When the water level drops to the water level of the floating body door 1 for opening the door, the water filling and draining pump 9 discharges the water body in the bottom half-barrel floating body 5, the bottom half-barrel floating body 5 is lighter, the buoyancy is increased, the floating body door 1 turns outwards around the door shaft 2, at the moment, the bottom turns inwards and upwards, the floating body door is blocked at the position of the outer baffle 6 of the bottom door frame, and the floating body door is in a horizontal opening state;

When the water level rises to the water level of the closed floating body door 1, the water pump 9 fills the bottom half-bucket floating body 5 with water, at the moment, the bottom is downwards and outwards reversed and clamped at the position of the baffle 4 in the bottom door frame, and the floating body door is in a vertical closing state.

Claims (1)

1. A gate for use in an upstream outlet of a fishway, characterized by: comprising the following steps: the floating body door, the door shaft, the water seal, the inner baffle, the bottom half-barrel-shaped floating body, the outer baffle and the door back curved surface; an inlet curved surface; a water pump is filled and discharged;

the floating body door is fixed on the door shaft and rotates around the door shaft;

the water seal is fixed on the baffle plate in the floating body door;

The bottom semi-barrel-shaped floating body comprises a semi-barrel and a plane for sealing the barrel, and a floating body door is fixed on the plane; the inner baffle is welded on the arc surface of the bottom half-barrel-shaped floating body, and the outer baffle is welded at the joint of the arc surface and the plane of the bottom half-barrel-shaped floating body;

The water filling and draining pump is arranged inside the bottom half-bucket floating body, drains water when the door is opened, and fills water when the door is closed.