JPH0262019B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a stationary river flow rate measurement device, and in particular, a stationary flow rate measurement device for long-term investigation of river flow rate change data that changes due to rainfall and other circumstances at a specific location. Concerning a measuring device.

[Prior art]

Measurement stations designated by the Ministry of International Trade and Industry have been installed at many locations across the country to promote the development and use of hydroelectric power generation and other fields.
The current velocity can be measured by mooring a small boat and using a current meter equipped on the boat, as proposed in Japanese Patent Application Laid-open No. 89715-1982, or by
As in Publication No. 92262, measurements are taken by hanging a current meter installed on a vehicle from the top of a bridge via a wire cord. Therefore, in the former method, in a waterway with an unchanged cross section and a shaped cross section,
Since it only measures the flow velocity at the center of the cross section, it is not possible to obtain accurate flow rates for ordinary rivers with deformed cross sections and non-formed cross sections.
It was not possible to obtain flow velocity data at many points in the cross section. In the latter method, it is difficult to measure changes in flow velocity at the same point across the entire cross section of the flow channel, resulting in lower accuracy, higher costs as it requires the labor of several people, and the wire cord may be bent by the water flow. Therefore, it has the disadvantage that detection errors are likely to occur.

[Purpose of the invention]

In view of the above-mentioned circumstances, an object of the present invention is to provide an automatic stationary river flow rate measuring device that can measure with high accuracy without being affected by changes in river conditions.

[Summary of the invention]

The present invention is characterized by a fixed river flow velocity measurement device that measures changes in flow velocity at a specific point in a river. A pole, a means for detecting the inclination angle of the pole and displaying a predetermined position, a means provided on the pole side for transmitting a river flow velocity signal, and a means provided for the pole for detecting a river bottom. , means for intermittently reciprocating the pole in the width direction of the river, means for intermittently reciprocating the pole in the depth direction of the river, and displaying information such as flow velocity values and movement values regarding the movement of the pole. be equipped with the means to
The purpose is to obtain information while automatically moving the pole over almost the entire cross section of the flow path.

[Embodiments of the invention]

1 is a pole provided with a depth display scale, and is equipped with a current meter 2 having a propeller which is a means for transmitting a river flow velocity signal, and a transmitter 3 electrically connected to this current meter 2. At the bottom of pole 1,
A transmitter 3 is arranged above. Also Paul 1
A weight 4 is provided at the bottom of the device, and a grounding switch 5 is provided at the bottom end to detect the water surface or river bottom. In addition, the pole 1 is vertically installed via a rope 19 so that it can be tilted by the force of water flow.
An angle meter 7 is provided as a means for detecting the inclination angle and displaying a predetermined position.

8 is a device for moving the pole 1 in the width direction of the river, and a wire rope 10 for arranging hanging devices and a main wire rope 1 are placed between the mounts 9 erected on both sides of the river.
1 is tensioned, and both wire ropes 10, 1
A carrier 13 is slidably mounted on the carrier 1 via a plurality of rollers 12. Reference numeral 14 denotes a wire rope for moving the carrier 13, which engages with sheaves 15 and 15a provided on the pedestal 9, one end is fixed to one side of the carrier 13, and the other end is connected to the motor and reducer 16. It is fixed to the other side of the carrier 13 through the forward/reverse reversible winding drum 17.

18 is a device for moving the pole 1 in the water depth direction; one end of a wire rope 19 for raising and lowering the pole is fixed to one side of the frame 9, and a sheave 20 provided on one side of the carrier 13 is connected above the pole 1 side. It passes through the provided sheave 21, the sheave 22 provided on the other side of the carrier 13, and the sheave 23 provided on the other mount 9 side in order, and is wound around a forward/reverse winding drum 25 connected to a motor and a speed reducer 24. .

A display panel 26 is a means for displaying information regarding the movement of the pole 1, and includes a display section that receives a signal from the transmitter 3 and displays the flow velocity, and the number of revolutions of a sheave or the like or the winding of the winding drum 17. a display section that detects the amount and displays the movement value of the pole 1 in the width direction;
It is equipped with a display section that detects the rotational speed of the sheave or the like or the amount of winding of the winding drum 25 and displays the depth. Note that a display section that converts the inclination angle of the pole 1 into an electric signal and displays it, or a display section that detects and displays the grounding of water or the riverbed may be provided.

Reference numeral 27 is an operation panel, and a moving device 8 for the pole 1,
It has 18 automatic/manual switching sections and a manual operation section. Note that the present invention is equipped with a control device (not shown) for displaying and storing information while automatically moving the pole 1 sequentially and intermittently over the entire cross section of the flow path.

28 is wire rope 10, 11, 14, 19
It is a wire suspension device arranged in an appropriate number in the wire rope, and has an insertion hole 29 for each wire rope 10, 11, 14, 19 and an engagement hole 31 for an engagement arm 30 provided in the carrier 13. Wire rope for array 10
The stoppers 32 and the through-hole 2 are arranged so that the stoppers 32 of the wire hanging tools 28, which are provided at approximately equal intervals, are engaged with the through-hole 29 or pass through the through-hole 29 without being engaged.
9, the wire hanging tool 28 moves together with the carrier 13 through the engagement of the engaging arm 30 and the engaging hole 31, while the wire hanging tool 28 moves by locking with the stopper 32. is always stopper 3
The wire ropes 10, 11, 14, and 19 are arranged at desired intervals in order to effectively prevent the wire ropes 10, 11, 14, and 19 from becoming loose. Note that the means for transmitting the river flow velocity signal and the means for detecting the water surface and river bottom do not need to be provided directly on the pole, but only need to be provided on the pole side, that is, so that they can move integrally with the pole. .

Therefore, due to the operation of the forward/reverse winding drum 17 for moving the pole 1 in the width direction of the river and the forward/reverse winding drum 25 for moving the pole 1 in the water depth direction, the pole 1 is moved to the fifth position. As shown at measurement point A in the figure, it is possible to obtain information such as the flow velocity, the amount of movement in the width direction, and the depth displayed on the display panel 26 while reciprocating intermittently over almost the entire cross section of the flow channel. River flow can be investigated with high accuracy because it can be obtained as change data at the same location. In this case, since the inclination angle of the pole 1 can be detected, the depth can also be accurately measured. Also, Paul 1
Because it can move automatically, accurate measurements are always possible without being affected by changes in river conditions such as high water levels or large flows. In addition, it is possible to conduct highly accurate surveys of ordinary rivers with variable cross sections and non-formed cross sections, and since poles are used, there is no need to worry about the poles being bent by water flow, and high accuracy can be obtained.

〔Effect of the invention〕

The present invention is a stationary river flow velocity measurement device that measures changes in flow velocity at specific points in a river, and includes a wire rope passed between frames installed on both side walls of a river, and a pole suspended from the wire rope. ,
means for detecting the inclination angle of the pole and displaying a predetermined position; means provided on the pole side for transmitting a river flow velocity signal; means provided for the pole for detecting the river bottom; means for intermittently reciprocating the pole in the width direction of the river; means for intermittently reciprocating the pole in the depth direction of the river; and means for displaying information such as flow velocity values and movement values regarding the movement of the pole. In order to be equipped with
The flow rate can be measured over the entire cross section of the flow path, making it possible to measure the flow rate with high accuracy. In addition, accurate measurements can always be automatically performed without being affected by changes in river conditions, and the effects are significant, such as reducing costs.

[Brief explanation of the drawing]

Figure 1 is an overall front view, Figure 2 is a side view of the main parts,
FIG. 3 is a plan view of the moving device, FIG. 4 is a cross-sectional view of the main part showing the hanging device, and FIG. 5 is an explanatory diagram showing measurement points of the flow path cross section. 1... Pole, 2... Current meter (means for transmitting a flow velocity signal), 3... Transmitter (means for transmitting a flow velocity signal), 5... Ground switch (means for detecting the river bottom) 7... Angle 8... Pole moving device (means for moving the pole in the width direction of the river);
18... Pole moving device (means for moving the pole in the water depth direction of the river), 26... Display board (means for displaying).

Claims (1)

[Claims] 1. In a fixed river flow velocity measurement device that measures changes in flow velocity at a specific point in a river, a wire rope is passed between frames installed on both sides of the river, a pole is suspended from the wire rope, and means for detecting the inclination angle of the pole and displaying a predetermined position; means provided on the pole for transmitting a river flow velocity signal; means provided for the pole for detecting a river bottom; means for intermittently reciprocating the pole in the width direction of the river; means for intermittently reciprocating the pole in the depth direction of the river; and means for displaying information such as flow velocity values and movement values regarding the movement of the pole. A stationary river flow rate measuring device characterized by: