JP3351291B2 - A device for fixing a dive sensor to the bottom wall of a channel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a fixing device for a submersible sensor which is fixed to the bottom wall of a flow path (for example, factory drainage, rainwater, sewage, etc.) flowing with a free water surface and used for measuring the flow rate. It is.

[0002]

2. Description of the Related Art In a flow path having no water level fluctuation, if the flow velocity is measured using a sensor that detects the flow velocity, the flow rate can be measured by the cross-sectional area and the flow velocity of the water flow based on the water level.
Alternatively, in a flow path in which the water level fluctuates, if a weir or flume is installed in the flow path and the water level on the upstream side is measured by a water level detection diving sensor, the flow rate can be measured based on the water level.

Therefore, conventionally, a base was provided on the bottom wall of the flow channel, and the diving sensor was directly fixed to the base. However, this method stops the water upstream of the sensor installation position and drains the pump downstream of the water stop section during installation in a state where flowing water is flowing, and during this time the sensor is attached (or removed). This requires a lot of man-hours and requires a water stop device and a drainage pump. In addition, it takes a long time to shut off the flowing water and set up the sensor, which increases the time to be exposed to toxic gas generated from drainage and sewage, which may lead to personal injury.

FIG. 10 shows an apparatus for solving the above problems.
A technique described in Japanese Utility Model Publication No. 1-36086 shown in (a, vertical sectional side view) and (b, a front view in FIG. A) is known. This conventional example will be briefly described. FIG.
1 (a) and 1 (b), reference numeral 1 denotes a circular flow path which flows with a free water surface S and has a variable water level; 2 denotes a flume installed in a circular flow path 1; 3 denotes a diving sensor for detecting a water level; Is a sensor fixing device for installing the diving sensor 3 on the bottom wall A of the flow path 1, and a partially circular arc-shaped member 5 having an arc length slightly shorter than the outer circumference of the circular flow path 1 and a flow path inner wall. And a diameter changing device 6 that presses and fixes the arc-shaped member 5 to the flow path bottom wall A by a tensioning action with the point of reaction as a force.
The diameter changing device 6 includes substrates 9, 9 hingedly connected to the arc-shaped member 5, and a screw rod 13 for expanding (or contracting) the substrate in the arrow Z direction. Reference numeral 31 denotes a lead protection tube for supplying power to the sensor and extracting output.

In the above arrangement, when the screw rod 13 is rotated by using the central portion of the screw rod 13 as a rotary operation tool, the rotational motion is converted into a linear motion between the screw portion e and the nut 12 and is transferred to one of the substrates 9. And thus the thread e and the nut 12
The two substrates 9, 9 are relatively separated by the rotation operation of, so that the arc-shaped member 5 is expanded and deformed.
As a result, the arc-shaped member 5 is pressed and fixed to the bottom wall A of the flow channel by a stretching action using the inner wall of the circular flow channel 1 as a reaction force point. According to such a configuration, the sensor can be installed or replaced without stopping the water flow.

[0006] c _1, c _2, c ₃ are a plurality of horizontal confirmation graduations provided on the right and left distribution locations around the sensor 3, pitched Mizuito the corresponding graduation example c _3, c ₃ with the left and right By making the lever horizontal, the sensor 3 is positioned at the bottom of the flow path 1.

[0007]

However, in the above-described conventional fixing device, since the diameter changing device for changing the diameter and the support portion are present in the flow path, foreign matter is caught here and hinders the flow rate measurement. And a slight loosening of the rotary operation tool causes a fixing failure of the sensor. In addition, when installing or replacing the sensor, there is a problem in that a rotation operation is required for attaching and detaching the fixing device, which is troublesome. Further, there is a problem that it takes a long time to perform positioning when the fixing device is fixed once removed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems of the prior art, and has a simple structure and a simple attachment / detachment, and also has a simple position adjustment when the fixed device once removed is fixed. It is an object of the present invention to provide a device for fixing a diving sensor to a bottom wall of a flow path.

[0009]

According to the present invention, there is provided an apparatus for fixing a diving sensor to a bottom wall of a channel having a cylindrical cross section. An opening provided in the upper part of the flow path, and
A sensor fixing member formed in a semicircular shape with the same outer diameter,
Submersible sensor fixed near the tip of the sensor fixing member
So that the sensor fixing member is in a predetermined arrangement.
At least one stopper scattered in the flow path
And fixing means for fixing the fixing member to the flow path ,

According to a second aspect, the flow path according to the first aspect is provided.
In the fixing device of the diving type sensor to the bottom wall, the channel and the sensor fixing member are fixed by screws,

In a third aspect, the flow path according to the first aspect is provided.
In a fixing device for a diving type sensor to a bottom wall, the opening hole is provided.
A groove is formed in the circumferential direction of the flow path from
A handle is provided at one end of the fixing member, and the handle is provided in the groove.
Engage the dollar and secure over the opening of the flow path
The movement of the handle is restricted by the lid,
Characterized by being fixed to the flow path ,

According to a fourth aspect, the flow path according to the third aspect is provided.
In the device for fixing a diving sensor to a bottom wall, the hand
Le is to shall and characterized by being formed by bending one end of the fixing member.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is an explanatory diagram showing an example of an embodiment of the present invention. In this example, the front part 50,
The flow path 1 has a structure divided into three parts, a throat part 51 and a rear part 52, and a diving sensor (for example, a pressure sensor) is installed in the front part 50. The flume 2 shown in the conventional example corresponds to the throat portion 51 here. 51
a is a throat cover that covers the throat portion, and FIG. 2 is a perspective view showing details of the front portion 50.

In these figures, 55 is the front part 5
An opening hole formed in a rectangular shape with a part cut away at the upper part of the zero. Reference numeral 57 denotes a sensor fixing member formed along the inner periphery of the flow path. The pressure sensor 61 is fixed at one end, and a hole 62 is formed at the other end. 63 is a hole for fixing the sensor fixing member 57 to the front part 50.

FIG. 3 is a perspective view showing details of the sensor fixing member 57. In the figure, reference numeral 61 denotes a pressure sensor, and this sensor 61 is fixed to one end of a sensor fixing member 57 by a sensor mounting bracket 62. Reference numeral 60 denotes a lead wire for taking out the output of the sensor to the outside. Reference numeral 64 denotes a flow direction stopper formed by welding or the like along the inner periphery of the front part 50, and here shows a case where two parts are formed. Reference numeral 65 denotes a circumferential stopper provided slightly above the bottom of the front part 50.

Returning to FIG. 1, the sensor fixing member 57 is inserted through the opening hole 55, and the fixing metal fitting 57 is inserted until the distal end thereof comes into contact with the circumferential stopper 65. Then, in the contact state, the side located downstream of the fixing member 57 is brought into contact with the flow direction stopper 64, and is fixed by a through bolt or the like using the hole 63. This fixing method is not limited to the through bolt. For example, a stud bolt may be fixed to the sensor fixing member 57 in advance, and the bolt may be engaged with the hole 63 of the front portion 50 and fixed with a nut. 5
A screw hole may be provided on the side 7 and fixed with bolts from the outer peripheral side of the front part 50. In short, it is sufficient that the sensor fixing member 57 and the front part 50 can be fixed. The fixing member 5
The pressure sensor 61 is designed so as to be located on the bottom wall of the flow path at a position where the tip of 7 contacts the circumferential stopper 65.

FIGS. 4 and 5 show another embodiment for fixing the sensor fixing member 57. Here, for example, a metal round bar is formed in a U-shape to form a handle 58, and its leg 58a.
Are fixed to the other end of the sensor fixing member 57 by screws or welding (FIG. 4). A groove 56 having a diameter larger than the diameter of the handle leg 58a is formed at a predetermined depth in the opening 55 of the front portion 50a (FIG. 5).
6 is designed such that the tip of the sensor fixing member 57a comes into contact with the circumferential stopper 65 when the bottom of the sensor fixing member 57 is reached.

Reference numeral 58b denotes a flange fixed to the leg 58a by welding or the like. The distance Y between the flange and the outer periphery of the sensor fixing member is formed slightly larger than the thickness Y 'of the cylinder of the front portion 50a. I have.

FIG. 6 shows a state in which a sensor fixing member 57a having a handle 58 is attached to the front portion 50a. FIG. 7 shows a sensor fixing member 57a attached to the front portion 50a.
FIG. 3 is a front view of the state where the camera is mounted as viewed from the upstream side.

As shown in the drawing, the sensor 61 is held in a state where the tip of the sensor fixing member 57a is in contact with the circumferential stopper 65.
Is located at the lowermost portion of the front portion 50a, the handle 58 is inserted into the groove 56, abuts against the bottom of the groove, and the front portion 50a is sandwiched between the outer periphery of the sensor fixing member 57a and the flange 58b at a slight interval. It has become. Reference numeral 67 denotes a front cover which covers the opening 55 and the sensor fixing member 57.
It is fixed by screws or the like above the front portion 60a so as to restrict the movement of a.

FIGS. 8 and 9 are perspective views showing still another embodiment. Here, a handle 58a is formed by bending one end of the sensor fixing member 57 in the outer peripheral direction to form a sensor fixing member 57b (FIG. 8). Also, the front part 50a
Is formed with a groove 56a into which the handle 58a is inserted to form a front portion 50b (FIG. 9). Even in such a configuration, the movement of the fixing member 57a can be restricted by covering with the front governor 67 and screwing it, as in FIG.

[0022]

As described above, according to the structure of the present invention, there is provided an apparatus for fixing a diving sensor to a bottom wall of a channel having a cylindrical cross section, provided at an upper portion of the channel. An opening hole , formed in a semicircular shape with an outer diameter similar to the inner diameter of the flow path
A sensor fixing member and a fixed portion near the tip of the sensor fixing member.
The specified diving sensor and the sensor fixing member
At least a small number of parts arranged in the flow path
And one stopper, fixing the fixing member to the flow path
The provision of the means makes maintenance of the sensor simple. That is, in the conventional example, it was necessary to loosen the screw at the time of maintenance to remove the entire device, and it took time to position the device when mounting the device. In the present invention, however, the sensor fixing member is simply fixed to the front part. Installation and maintenance are simplified.

[Brief description of the drawings]

FIG. 1 is a configuration explanatory diagram showing an example of an embodiment of the present invention.

FIG. 2 is a perspective view showing details of a front part of FIG. 1;

FIG. 3 is a perspective view showing details of a sensor fixing member.

FIG. 4 is a perspective view showing another embodiment of the sensor fixing member.

FIG. 5 is a perspective view showing another embodiment of the front part.

FIG. 6 is a configuration explanatory view showing another example of the embodiment of the present invention.

FIG. 7 is a front view of a state in which a sensor fixing member is attached to a front portion, as viewed from an upstream side.

FIG. 8 is a perspective view showing another embodiment of the sensor fixing member.

FIG. 9 is a perspective view showing another embodiment of the front part.

FIG. 10 is an explanatory diagram of a configuration of a conventional example generally used.

[Explanation of symbols]

 1 flow path 50 front part 51 flume (throat part) 51a throat cover 52 rear part 55 opening hole 56 groove 57 sensor fixing member 58 handle 60 lead wire 61 pressure sensor 62 sensor mounting bracket 63 hole 64 flow direction stopper 65 circumferential direction stopper

Claims (4)

(57) [Claims] 1. A cross-section to a device for fixing a submersible sensor in the bottom wall of the cylindrical flow path, and an opening hole provided in the upper portion of the channel, the inner diameter of the channel
A sensor fixing member formed in a semicircular shape with the same outer diameter as
A submersible sensor fixed near the tip of this sensor fixing member
So that the sensor fixing member is in a predetermined arrangement.
At least one stopper interspersed with the channel
And a fixing means for fixing the fixing member to the flow channel . 2. The apparatus according to claim 1, wherein the flow passage and the sensor fixing member are fixed by screws. 3. A groove is formed from the opening in the circumferential direction of the flow path.
And a handle at one end of the sensor fixing member.
The handle is engaged with the groove, and the flow path is opened.
The handle is moved by a lid that covers and secures the mouth.
2. A fixing device for a diving sensor to a bottom wall of a flow channel according to claim 1, wherein the fixing member is fixed to the flow channel by restriction . 4. The handle is formed by bending one end of a fixing member.
It formed landline apparatus submersible sensor into the flow passage bottom wall of 請 Motomeko 3 wherein you said.