JPS5841212Y2 - Abnormality detection device in cylinder gate - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an abnormality detection device in a cylinder gate.

When the inside of the cylinder gate becomes empty and watery, the external pressure applied to the cylinder increases, and excessive tension is generated in the upper stage wire rope.

In other words, the compressive stress of the cylindrical body and the lowering load of the upper stage player increase.

Maintaining such a state for a long time increases the risk and is not desirable.

The present invention proposes an abnormality detection device for a cylinder gate that can solve the above problems, and one embodiment thereof will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a dam, and a support part 2 is provided protruding from the middle part of the dam body on the front side 1a.

The upper surface of the receiving portion 2 is formed on the tower floor surface 2a, and a water intake pipe 3 is formed in the dam 1 with a bell mouth 3a opening thereon.

Reference numeral 4 denotes a cylinder gate, which includes a lowermost water intake pipe 5 that can be placed on the tower floor surface 2a surrounding the bell mouth 3a, an intermediate water intake pipe 6, 7, an uppermost water intake pipe 8, and each water intake pipe. The uppermost water intake tube 8 has a water intake tray 9 at its upper end.

Although the embodiment shows a four-stage expansion/contraction format, the number of stages can be changed arbitrarily.

Reference numeral 10 denotes a rectifying plate with a float attached to the water intake tray 9 via a plurality of connecting rods 12 to form a water intake 11 between the water intake tray 9 and a retaining beam portion forming the upper part thereof. A pulley 13 is attached to the.

Reference numeral 14 designates a water intake tower for guiding the cylinder gate, which is erected from the tower floor surface 2a of section 2, and is supported in the middle by a beam 15 from the front side of the dam body 1a, and a building 16 is installed at the upper end. It is provided.

Reference numeral 17 denotes a winch device provided in the building 16, by which a wire rope 18 is wound around the pulley 13.

The connecting rod 12 has a cylindrical shape, and has an opening 12a at the lower end and an air vent hole 19 near the upper end.

An electrode rod 21 is disposed in the connecting rod 12 from above with a spacer 20 interposed therebetween, and the electrode rod 21 is configured so that its vertical position can be changed using an adjustment nut 22.

The lower end of a messenger rope 23 for an opening gauge is connected to the upper end of the electrode rod 21, so that electricity can be applied to the electrode rod 21 via the messenger rope 23.

The upper end side of the messenger rope 23 is wound around an opening gauge 24 provided in the building 16.

When the water level is normal A, the electrode rod 21 is immersed in water that has entered the connecting rod 12 through the opening 12a.

In this state, a weak electric current of 8V2mmA is applied to the Metsusenja rope 23.
When the current flows through the electrode rod 21 into the water, it can be detected that the water level A is normal by looking at the ammeter installed in the building 16.

In the case of abnormal water level B, the electrode rod 2 is moved upward from this water level B.
1, no current flows, and therefore the abnormal water level B can be detected by looking at the ammeter.

When an abnormal water level B, that is, an empty water state or a state about to become empty water, is detected, the cylinder gate 4 is operated in the following order.

B. Wind up the lowermost water intake cylinder 5 using the cylinder gate lower stage winding machine.

In response to this operation, water is taken directly from the lower part via the bell mouth 3a to restore the empty water condition.

Gates on the downstream side of the cylinder gate 4, such as jet flow gates and discharge valves, are closed.

The uppermost setup water cylinder 8 is lowered by the hoisting machine 17.

Prior to this operation, the air condition had been completely restored by the operation of the 49 ports described above.

2. The lowermost intake water cylinder 5 is lowered by the lower cylinder gate hoisting machine to fully close it, and the gate on the downstream side of the cylinder gate is opened.

With this operation, the function of the cylinder gate 4 is restored.

In the embodiment described above, by moving the electrode rod 21 up and down by operating the adjustment nut 22, the detection position can be set in accordance with the intake water level.

As described above, according to the present invention, the empty/water state can be detected quickly and the time of the empty/water state can be minimized, and the weir water level can be directly detected, eliminating any malfunctions, thus increasing the integrity of the cylinder gate. can.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional view and FIG. 2 being a longitudinal sectional view of the main parts. 1...Dam, 2...Ukehabu, 3...
...Intake pipe, 4...Cylinder gate, 8...
...Top stage water intake cylinder, 9... Water intake basin, 10.
・・・・・・Rectifier plate with float, 12・・・Connecting rod, 17・・・Hoisting machine, 18・・・Wire rope, 21・・・・・・Electrode rod , 23...Metssenjarope, A...Normal water level, B...
・Abnormal water level.

Claims (1)

[Scope of utility model registration request] The uppermost water intake tube in the cylinder gate and the rectifying plate with a float are connected by a cylindrical connecting rod, and an electrode rod is disposed within this connecting rod, and the electrode rod is configured to be energized via a messenger rope. An abnormality detection device for a cylinder gate, characterized by: