KR101531566B1 - The flume type flowmeter that can identify a critical flow - Google Patents

Abstract

The present invention relates to a flume-type flowmeter capable of identifying a critical flow, which is developed to identify the situation when a flume-type flowmeter for measuring a flow in a sewer cannot measure a correct flow because of diverse causes such as all sorts of deposits, abnormality of the sewer, etc. The flume-type flowmeter includes: a U-shaped body which has both ends connected to two sewer pipes in a manhole where the two sewer pipes are connected to each other and includes an upward movement section, a horizontal movement section, and a downward movement section which are formed in sequence; and a sensor gauging unit which is installed in a bracket mounted on the top end of the body to measure a water level in the upward movement section at the position half of the width of the body, wherein the upward movement section has the bottom surface slantly ascending and the width of both sides adjacent thereto becoming narrow, the horizontal movement section is extended with the same height and width as the upward movement section, and the downward movement section has the bottom surface slantly descending and the width of both sides adjacent thereto widening. The flume-type flowmeter further includes a critical flow measuring sensor which is installed above the horizontal movement section of the body by a second bracket to measure a water level in the horizontal movement section.

Description

[0001] The present invention relates to a flume type flow meter,

The present invention relates to a plume flow meter capable of confirming a limit flow, and more specifically, a plume flowmeter for measuring a flow rate in a sewer pipe does not generate a limit flow due to various causes such as various sediments and sewage pipes, The present invention relates to a flow meter capable of confirming a limit flow that has been developed in order to identify situations that can not be measured.

The sewer line is a waterway with free water surface, and it has a circular tube shape in most sections, exists in a culvert form closed by a manhole, and there are abundant obstacles such as gravels and gravels introduced from various life garbage and pipeline damages.

The main purpose of installing the flowmeter in such a sewer pipe is to measure the pattern of sewage generation and discharge, and compare the amount of rainfall inflow water during rainfall and the amount of nightly discharge at night and night And monitoring of the damage to the pipeline in the sewage treatment area through the quantification of the groundwater infiltration water that is constantly invading through.

Therefore, the sewerage flowmeter is mainly installed in the area where the sewerage is divided into the sewer line and the sewerage line where the pipeline is installed. Repeated reproducibility of the daily sewage peak and evening sewage peak, This requires a flow meter with a non-contact type of sewage and sensor.

The flowmeter is divided into a full-flowmeter and an obesity-type flowmeter. The flowmeter of the full-scale flowmeter has the same cross-sectional area as the cross-sectional area of the water channel. However, since the flowmeter of the obesity tubular flowmeter changes its level depending on the flow rate, Is a very important indicator that determines the accuracy of the flowmeter and the field measurement accuracy.

The flowmeter of the number of channels has a weir type, a flume type, a flow rate water level calculation formula according to the measurement method, and if the plume type is made to narrow the channel by narrowing a part of the cross section of the channel, When the flow rate is reduced at the reduced part and the water level of the part becomes lower than the water level at the upstream side, the amount of decrease of the water level is measured and then the flow rate is obtained by Bernoulli's theorem. Borosulfium and the like.

FIG. 9 is a conceptual view showing a Limbal Flowmeter of a Pharma-Boras (PB) type installed in a conventional sewer pipe. The manhole 4 connecting the two sewage pipes 41 has a U-shape and both ends are connected to both sewage pipes A horizontal movement section 12 extending at the same height and width in the upward movement section 11 and a horizontal movement section 12 extending in the upward and downward movement sections 11 at the same height and width, A body (1) in which a descending movement section (13) in which the widths of both sides are inclinedly extended is formed sequentially; And a sensor measuring unit 2 mounted on a bracket 21 mounted on an upper end of the body 1 and measuring a water level at a point half of the width of the body 1 in the ascending movement section 11 The flowmeter is composed of a flowmeter and a flowmeter.

The flow of sewage is gradually lowered and the flow rate is increased in the upward movement section 11 and the flow of the horizontal movement section 12 is increased. The critical flow that flows to the limit water depth that moves to the same water level in the lowered state becomes a critical flow and in the downward movement interval 13 the water level is gradually lowered and finally the lowest water level becomes the supercritical flow, (A) in which the flow is classified into the normal flow (A).

However, in various situations such as accumulation of various foreign substances in a sewer pipe or collapse of a sewer pipe, an unsteady flow (B) occurs in which the water level becomes high and a limit flow is not generated. However, the sensor measuring unit (2) It is judged that the flow rate is simply increased because the flow rate is not recognized and thus the accurate flow rate can not be measured.

(Patent Document 1) Korean Published Patent Application No. 10-2007-0097233 (October 04, 2007) (Patent Document 2) Korean Patent Registration No. 10-1208330-0000 (November 29, 2012) (Patent Document 3) Korean Patent Registration No. 10-1290159-0000 (Jul. 22, 2013)

SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method and apparatus for detecting a situation in which a water level is raised due to the accumulation of foreign matter in a sewer pipe, And to develop a flow meter that can confirm the limit flow.

Another object of the present invention is to develop a flow meter capable of detecting a limit flow capable of generating a limit flow when the water level becomes high and a normal limit flow can not be measured.

In order to accomplish the above object, the present invention provides a sewing machine including a manhole having a U-shape at a manhole connecting both sewage pipes, both ends of which are connected to both sewage pipes, a rising section in which the bottom surface is inclined upward, A body in which a horizontal movement section extending in the same height and width in the ascending movement section and a descending movement section in which the bottom surface is inclined downward and the width of the adjacent sides are inclined broadly; And a sensor measuring unit mounted on a bracket mounted on an upper end of the body for measuring a water level at a point at a half of a width of the body in the upward movement section,

And a limit flow meter sensor is mounted on the upper end of the body where the horizontal movement section is formed, to measure the water level in the horizontal movement section.

In addition, the limit flow measuring sensor includes a guide rod extending vertically downwardly to a second bracket, a float passing through the guide rod to move up and down according to a water level, and a float sensor mounted on the second bracket to detect when the float is on an abnormal high- An abnormal sensor, and a normal sensor for sensing when it is in a normal position.

In addition, the power lifter of the manhole further includes a camera for photographing the state of the flowmeter when an abnormal water level is detected by the limit flow measurement sensor, and a transmission / reception unit for transmitting the photographed image to the manager.

A first fixing flange fixed to the inside of the manhole with the same inner diameter as the sewage pipe at the manhole from which the sewage flows, a second fixing flange having the same inner diameter as the first fixing flange mounted at the inlet of the body to receive the sewage, A mounting bracket fixed to an inner upper end of a manhole to which the first fixing flange is mounted and then bent and extended horizontally; A motor mounted on the upper surface of the motor so as to penetrate the rotating shaft downwardly at a center thereof, an up / down bracket fixed to the vertical lower portion of the motor across the upper end of the motor body and having a screw hole at the center thereof, A screw rod having a screw thread formed to correspond to a screw hole of the ascending / descending bracket, And a pair of lifting / lowering guide rods passing through the mounting bracket.

As described above, according to the present invention, it is possible to identify a limit that can easily grasp a situation in which the water level is raised due to the accumulation of foreign matter in the sewer pipe or the disturbance of the flow of sewage, So that the situation can be solved through the repair of the sewage pipe and the like.

In addition, when the water level becomes high and a normal limit flow can not be measured, there is an effect that the flow rate can be measured by inducing the occurrence of the limit flow while raising the flow meter.

FIG. 1 is a conceptual diagram according to an embodiment of the present invention.
FIG. 2 is a perspective view of an embodiment of the present invention.
3 is a conceptual diagram according to the first enlarged embodiment of the present invention.
4 is a conceptual diagram according to a second enlarged embodiment of the present invention.
5 is a perspective view of a third enlarged embodiment of the present invention.
6 is an exploded perspective view according to a third enlarged embodiment of the present invention.
7 to 8 are diagrams showing the state of use according to the third enlarged embodiment of the present invention
FIG. 9 is a conceptual view showing a flow meter of a limit flow type in a conventional sewer line

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a conceptual diagram according to an embodiment of the present invention. FIG. 2 is a perspective view according to an embodiment of the present invention, in which a manhole 1 connecting a double-side sewage pipe 11 has a U- A rising section 11 connected to both sewer pipes and having a bottom surface rising obliquely and having a narrow width at both sides adjacent to each other, a horizontal moving section 12 extending at the same height and width at the rising section 11, A body (1) in which a descending movement section (13) descending obliquely and widening the width of both adjacent sides is sequentially formed; And a sensor measuring unit 2 mounted on a bracket 21 mounted on an upper end of the body 1 and measuring a water level at a point half of the width of the body 1 in the ascending movement section 11 For a flow-type limiting flow meter comprising:

A limit flow measuring sensor 3 mounted on the upper end of the body 1 on which the horizontal movement section 12 is formed is provided with a second bracket 31 to measure the level in the horizontal movement section 12 And the flow meter is further mounted.

The present invention can detect the level of the horizontal movement section (12) when the situation occurs without generating a limit flow, but the present invention can detect the level of the horizontal movement section (12) That is, if the normal water level difference does not occur, it has a means of detecting the water level and informing the manager thereof.

FIG. 3 is a conceptual diagram according to a first enlarged embodiment of the present invention. The limit flow measurement sensor 3 includes a guide bar 32 extending vertically downward from a second bracket 31, An abnormal sensor 34 mounted on the second bracket 31 to sense when the float 33 is on an abnormal high water level, and a sensor 33 for sensing when the float 33 is in the normal position, And a normal sensor (35).

The above embodiment has an abnormal sensor that detects an abnormal condition by the float 33 having buoyancy. The abnormal condition can be confirmed by detecting only the difference from the sensor measuring unit 2 rather than measuring the accurate water level And the limit flow measurement sensor 3 is constituted by a simple configuration.

FIG. 4 is a conceptual diagram according to a second enlarged embodiment of the present invention, in which a camera 42 for photographing a state of a flow meter when an unsteady water level is detected by the limit flow measurement sensor 3, And a transmitting / receiving unit 43 for transmitting the photographed image to the manager.

When the manager can not monitor the inside of a large number of manholes 4 in real time, when the abnormal water level is detected by the limit flow measurement sensor 3, the administrator can check the situation by the image and take action Yes.

Alternatively, if the administrator recognizes an abnormal water level of the limit flow measurement sensor 3 through an alarm, a signal is given to the transmission / reception unit 43 to shoot the image on the camera 42, Can also be used.

FIG. 5 is a perspective view of a third enlarged embodiment of the present invention, FIG. 6 is an exploded perspective view according to a third enlarged embodiment of the present invention, and FIGS. 7 to 8 are cross- A first fixing flange 51 fixed to the inside of the manhole 4 with the same inner diameter as the sewage pipe 41 in the manhole 4 from which the sewage flows, A second fixing flange 52 having the same inner diameter as the first fixing flange 51 mounted on the inlet, a telescopic bellows pipe 53 connecting the first and second fixing flanges 51 and 52, A mounting bracket 54 which is fixed to the inner upper end of the manhole 4 on which the first fixing flange 51 is mounted and which extends horizontally and which has a rotating shaft penetrating downward at the center of the bent upper surface of the mounting bracket 54; A motor 55 which is mounted to the upper portion of the body 55 so as to face the upper portion of the body 1 horizontally, A screw rod 57 having a threaded portion formed on an outer circumferential surface thereof so as to be coupled with a screw hole of the ascending / descending bracket 56, And a pair of raising and lowering guide rods (58) vertically installed on the raising and lowering brackets (56) and passing through the mounting brackets (54). As shown in Fig.

In the above-described embodiment, when the manager confirms the abnormality as described above, the motor 55 is operated to raise the body 1 so that the effect is reduced by deposition of foreign matter or the like. When the flow is made according to the amount of water, It is confirmed that the limit flow occurs at the water level and the flow rate by the water level measurement can be judged.

1: Body
11: rising movement section 12: horizontal movement section
13: descending moving section
2: Sensor measurement section
21: Bracket
3: Limit flow measurement sensor
31: second bracket 32: guide rod
33: float 34: abnormal sensor
35: Normal sensor
4: Manhole
41: sewage pipe 42: camera
43: Transmitting /
5:
51: first fixing flange 52: second fixing flange
53: Bellows tube 54: Mounting bracket
55: motor 56: ascending / descending bracket
57: screw rod 58: lifting guide rod
A: normal flow
B: abnormal flow

Claims (4)

A rising section 11 having a U-shape at the manhole 1 connecting the two sewage pipes 11 and having both ends connected to both sewage pipes and having a bottom surface rising obliquely and being narrowed at both sides adjacent to each other, A body 1 in which a horizontal movement section 12 extending at the same height and width in the movement section 11 and a down movement section 13 in which the bottom surface is inclined downward and the widths of the adjacent sides are inclined wide are sequentially formed, ; And a sensor measuring unit 2 mounted on a bracket 21 mounted on an upper end of the body 1 and measuring a water level at a point half of the width of the body 1 in the ascending movement section 11 For a flow-type limiting flow meter comprising:
A limit flow measuring sensor 3 mounted on the upper end of the body 1 on which the horizontal movement section 12 is formed is provided with a second bracket 31 to measure the level in the horizontal movement section 12 A flow meter capable of confirming a limit flow characterized by being additionally mounted. The apparatus according to claim 1, wherein the limit flow measuring sensor (3) comprises: a guide rod (32) extending vertically downward from the second bracket (31); and a float An abnormal sensor 34 mounted on the second bracket 31 to sense when the float 33 is on an abnormal high water level and a normal sensor 35 sensing when the float 33 is in a normal position. A flow meter that can check the limit flow. 3. The method according to claim 1 or 2, further comprising: a camera (42) for photographing the state of the flowmeter when an unsteady water level is detected by the limit flow measurement sensor (3) on the power rising surface of the manhole (4) And a transmission / reception unit (43) for transmitting the flow rate information. The sewage treatment system according to claim 3, further comprising: a first fixing flange (51) fixed to the inside of the manhole (4) with the same inner diameter as the sewage pipe (41) in the manhole (4) A second fixing flange 52 having the same inner diameter as the first fixing flange 51 mounted at the inlet to which the first fixing flange 51 and the second fixing flange 51 are connected, A mounting bracket 54 fixed to the inner upper end of the manhole 4 on which the first fixing flange 51 is mounted and then bent and extended horizontally; An up / down bracket 56 fixed to the vertical lower portion of the motor 55 so as to horizontally cross the upper end of the body 1 and having a screw hole at the center thereof, The rotating shaft of the motor 55 is extended so that the threaded hole is formed on the outer circumferential surface so as to be coupled to the threaded hole of the ascending / Descending device 5 composed of a screw rod 57 which is vertically installed on the ascending and descending bracket 56 and a pair of ascending and descending guide rods 58 passing through the mounting bracket 54 And a flow meter capable of confirming the limit flow.

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