KR101440924B1 - Flowmeter system without contacting fluid and controlling method for the same - Google Patents

Abstract

The present invention provides a non-liquid contact-type flow rate measurement system including a water level sensor that is disposed in a non-liquid contact manner in a conduit of a waterway and measures a water level of the conduit; a flow speed sensor that is disposed in a single housing integrally with the water level sensor in the conduit in a non-liquid contact manner and measures a flow speed of water which flows in the conduit; and a control module unit that collects the water level and flow speed measurement data which are measured by the water level sensor and the flow speed sensor at a previously set time interval, stores the water level and flow speed measurement data on a memory, calculates the volume of an actual sediment deposited in the conduit by a CFD characteristic function method by using the measured water level and flow speed measurement data, and calculates an actual flow rate of the conduit, and a method for controlling same. According to the present invention, a measurement value that is obtained from non-liquid contact-type sensors which are disposed on a conduit of an open channel is used so that the volume of the actual sediment deposited in the conduit is calculated by the CFD characteristic function method and the flow rate is measured with precision. Alternatively, a flow speed conversion factor and an average flow speed of the water that flows in the conduit are obtained for accurate flow rate calculation, and thus the flow rate can be measured with substantial accuracy regardless of an effect of surrounding environments where the sensors are disposed. Also, the water level and flow rate change in the conduit with respect to a bottom portion sediment are precisely calculated and reflected to flow rate measurement, and thus water flow rate management can be performed scientifically and precisely.

Description

TECHNICAL FIELD [0001] The present invention relates to a non-contact liquid flow measurement system and a control method thereof,

In particular, the present invention relates to a non-contact type flow measurement system and a control method thereof, and more particularly, to a flow rate measurement system and a control method thereof, in which a volume of an actual sediment deposited on a pipeline is calculated by using a CFD characteristic function method, The present invention relates to a noncontact type flow measurement system and a control method thereof that can scientifically perform flow rate management of a waterway by calculating a flow velocity conversion coefficient and an average flow velocity of water flowing in a pipeline and calculating an accurate flow rate.

Generally, when a city is constructed, a sewer pipe is installed in such a city to supply water to each household or living facility, and a sewer pipe is constructed to prevent pollution of water from domestic sewage or rainwater discharged from each household . In order to prevent damages caused by the flow of the instantaneous maximum flow, it is necessary to measure the actual flow rate very accurately and stably, and a system for measuring the normal flow rate is installed according to the necessity. There have been various attempts to measure the flow rate as described above. In the conventional method of measuring the flow rate, there is a propeller tachometer-winch device in which a weight is suspended in an anemometer and the flow rate is measured by the number of revolutions of the propeller. Recently, an ultrasonic wave velocity meter and an Acoustic Doppler Current Meter (ADCP) have been used.

1, for example, in order to measure the amount of sewage passing through the sewer pipe, a pressure type water level sensor installed on the bottom of the sewer pipe 70 for measuring the water level, (71); An ultrasonic Doppler flow velocity sensor 72 installed at the bottom of the sewage pipe 70 for measuring a flow velocity; And a control module 73 for calculating measurement data measured from the pressure type water level sensor 71 and the ultrasonic wave Doppler flow velocity measurement sensor 72 and calculating flow rate data of sewage flowing through the sewage pipe 70.

First, the pressure type water level sensor 71 and the ultrasonic Doppler flow velocity measurement sensor 72 are installed on the bottom surface of the sewage pipe 70 through which the sewage flows, and then the measurement is executed do. Then, the pressure type water level sensor 71 measures the pressure of the sewage flowing in the sewage pipe 70 to the upper portion of the pressure type water level sensor 71, and transmits it to the control module 73. In this process, the pressure measured by the pressure type water level sensor 71 corresponds to a value obtained by multiplying the density of the sewage water, the acceleration of gravity, and the water level H of the sewage water, and the sewage density and gravity acceleration are known values, When the measured pressure is divided by the sewage density and the gravitational acceleration, the water level (H) of the sewage is calculated. The ultrasonic wave Doppler flow velocity sensor 72 transmits ultrasonic waves toward the sewage, and the transmitted ultrasonic waves are reflected by the suspended particles B contained in the sewage and received by the ultrasonic wave Doppler flow velocity sensor 72 again. At this time, the frequency of the ultrasonic wave received by the ultrasonic wave Doppler flow velocity sensor 72 changes according to the velocity of the suspended particles B reflected by the Doppler effect, and the change of the frequency is measured, The control module 73 calculates the flow rate of the sewage flowing into the control module 73. Then, the control module 73 calculates the cross-sectional area through which the sewage flows using the water level H inputted from the pressure type water level meter 71, and calculates the flow rate of the sewage calculated by the flow rate sensor 72 in this cross- And calculates the flow rate of the sewage flowing through the sewage pipe 70. [

Furthermore, the recently developed flow measurement system is increasingly employed in a noncontact type outside of the pipeline of the water level sensor and the flow velocity sensor.

However, in the conventional flow rate measuring system as described above, when the water level (H) of the sewage flowing in the sewer pipe is drastically lowered, the flow rate can not be normally measured if the sewage pressure falls below the minimum pressure that can be measured by the pressure type water level meter, When the foreign matter such as soil or the like contained in the sewage is settled and covers the upper part of the sensors, the pressure measured in the pressure type water level sensor 1 is raised and the water level is measured higher than the actual water level (H) The ultrasonic waves emitted from the flow rate measuring sensor may be received after being reflected by the foreign matter flowing along with the sewage, so that an inaccurate flow rate is calculated, and as a result, the flow rate calculation is also inaccurate .

Even if the noncontact type flowmeter developed and used recently is installed in the repair channel and the flow rate is measured, since the accurate volume of the deposit accumulated in the channel of the repair channel can not be detected by such a noncontact type flowmeter, The flow meter also has a problem that it is difficult to measure the flow accurately.

 In addition, since the conventional flow rate measuring system as described above is used merely as a function of measuring the flow rate of the sewer pipe, it is not possible to simultaneously measure a substance such as methane gas existing in the pipeline, There is a problem in that it is frequently exposed to danger while entering and working.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a CFD characteristic function method which accurately calculates the volume of actual sediment deposited on a pipeline, And it is an object of the present invention to provide a noncontact type flow measurement system and a control method thereof that can precisely calculate a flow rate change and reflect it in flow measurement.

Another object of the present invention is to provide a method and apparatus for estimating a flow rate of water flowing in a pipeline by calculating a flow rate conversion coefficient and an average flow rate of water flowing in a pipeline using measurement values obtained from non- And a control method thereof, in which the flow rate can be measured substantially accurately irrespective of the influence.

It is a further object of the present invention to provide a gas detection function in a flow measurement system to simultaneously measure a gas and a flow amount in a sewer pipe or a sewer pipe installed in a manhole, A noncontact type flow measurement system and a control method thereof for protecting a worker are provided.

According to an aspect of the present invention, there is provided a water level sensor comprising: a water level sensor installed in a channel of a waterway in a non-contact manner and measuring a water level of the channel;

A flow rate sensor integrally installed in the housing together with the water level sensor in a noncontact manner in the pipeline and measuring a flow rate of water flowing through the channel;

The water level and flow rate measurement data measured by the water level sensor and the flow rate sensor are collected at a predetermined time interval and stored in a memory. The measured volume and flow rate data are used to calculate the volume of actual sediment deposited in the pipeline And a control module for calculating an actual flow rate of the pipeline by calculating the actual flow rate of the pipeline.

In another aspect of the present invention, there is provided a control method for a control module, comprising: operating a flow measurement system provided with a control module unit to perform a calibration test, calculating correction test data to calculate a characteristic function expressed by Equation 1, 1;

After the first process, the level data H and the flow velocity data V _S are measured and stored from the pipeline through the noncontact type level sensor and the flow velocity sensor provided in the flow measurement system, and the level data measured by the level sensor 2 A second step of calculating a water level ratio X from the diameter D of the pipeline by using the water level H;

A third step (S4) of calculating a flow rate conversion coefficient by substituting the water level data (H) measured by the control module-attached water level sensor into the characteristic function (1) after the second process;

A fourth step of calculating an average flow velocity V _m from the K calculated by the control module and the measured water surface velocity data V _S after the third step S4;

A fifth step in which the control module unit 6 calculates a water level non-area M using Equation 3 after the fourth step;

After the fifth step (S6) The control module added to calculate the average flow rate (V _m) and the level ratio sectional area actual flow data (Q) of the operation by the pipeline for (M) and the entire pipe cross-sectional area (A) by the equation (4) A sixth aspect of the present invention provides a control method of a noncontact type flow measurement system.

Another characteristic feature of the present invention resides in that a characteristic function resetting function for changing a specific function K, which is a flow velocity ratio that is a ratio of the water flow velocity V _S and the average flow velocity V _m when the measured water level is equal to or lower than a predetermined value of the pipe diameter, 2-1 < / RTI >

A second step (2-2) of analyzing a change in a flow rate using a CFD (computational fluid dynamics) equipped with a control module after the step 2-1;

After the step 2-2, the control module sets the actual height H ₀ of the sediment measured through the CFD, and then outputs the level data H and the flow velocity data V _S from the pipeline through the non-contact liquid level sensor and the flow velocity sensor, (2) calculating a water level ratio (X) from the diameter (D) of the channel by using the water level data (H) measured by the water level sensor;

Step 2-4 of calculating the flow rate ratio K by substituting the water level ratio (X) including the sediment into the equation (1-1), which is a characteristic function, after the step (2-3);

(2-5) calculating an average flow velocity (V _m ) from the K calculated by the control module and the measured water surface velocity data (V _S ) by the equation (2-1) after the step 2-4;

Sectional area M from the water level cross-sectional area M obtained by multiplying the water level ratio G by the water level ratio X with the water level ratio G according to the water level ratio of the control module after step 2-5, (2-6) of calculating the flow cross-sectional area (A) using the equation (3);

After step 2-6, the control module multiplies the actual height of the sediment inputted in the first step and the height ratio (G ₀ ) according to the height ratio of the sediment to the height ratio (X ₀ ) Sectional area (A ₀ ) of the sediment using Equation (3-1) from the calculated sectional height of the sediment (M ₀ ) after calculating the specific cross-sectional area (M ₀ );

After the step 2-7, the control module calculates the actual flow cross-sectional area (A) from the cross-sectional area (A ₀ ) of the sediments and the flow cross-sectional area (A) calculated in steps 2-6 and 2-7 A ₂ );

(2-9) for calculating the actual flow rate data (Q1) of the pipeline by calculating the average flow velocity (V _m ) and the actual flow cross-sectional area (A ₁ ) of the control module after the step 2-8. And provides a control method of the system.

According to the present invention, the volume of the actual sediment deposited on the pipeline is calculated using the CFD characteristic function method using the measurement values obtained from the non-contact type sensors installed on the pipeline of the repair channel, and the flow rate is accurately measured, The water level and the flow rate change of the pipeline to the sediment are precisely calculated and reflected in the flow rate measurement, so that the flow rate management of the channel can be performed scientifically and precisely.

In addition, the present invention as described above calculates the accurate flow rate by calculating the flow velocity conversion coefficient and the average flow velocity of the water flowing in the channel using the measurement values obtained from the non-contact type sensors installed on the channel of the channel, Since the flow rate can be measured accurately regardless of the influence of the environment, the flow control of the channel can be performed scientifically and precisely.

1 is an explanatory view for explaining an example of a conventional flow measurement system;
2 is an explanatory view schematically illustrating one embodiment of a noncontact flow measurement system according to the present invention;
FIG. 3 is an explanatory view illustrating an electric circuit of the embodiments of the noncontact type flow measurement system according to the present invention. FIG.
4 is a flowchart of Embodiment 1 of the present invention.
5 is a flowchart of the second embodiment of the present invention.

Hereinafter, preferred embodiments of a noncontact type flow measurement system according to the present invention will be described with reference to the accompanying drawings.

However, the present invention is not limited to the embodiments of the noncontact flow measurement system according to the present invention described here, but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification. It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The term " comprises " And / or "comprising" does not exclude the presence or addition of one or more other elements, steps, operations, and / or elements.

Example 1

FIG. 2 is an explanatory view schematically illustrating one embodiment of a noncontact type flow measurement system according to the present invention, and FIG. 3 is an explanatory diagram illustrating an electric circuit of the embodiments of the noncontact type flow measurement system according to the present invention 4 is a flowchart of Embodiment 1 of the present invention, and Fig. 5 is a flowchart of Embodiment 2 of the present invention.

2 to 3, the noncontact type flow measurement system according to an embodiment of the present invention is characterized in that the noncontact type flow measurement system according to the first embodiment of the present invention is installed in the channel 1 in a non-contact manner A water level sensor 2 for measuring the water level of the conduit 1;

A flow sensor 4 integrally provided in the housing 1 together with the level sensor 2 in a non-contact manner to measure the flow rate of the flowing water in the conduit 1;

The water level and flow velocity measurement data measured by the water level sensor 2 and the flow velocity sensor 4 are collected at a predetermined time interval and stored in the memory 5 and measured by the characteristic function method And a control module unit 6 for calculating a flow velocity conversion coefficient and an average flow velocity for water flowing through the conduit 1 and calculating an actual flow rate of the conduit 1.

The water level sensor 2 and the flow velocity sensor 4 are connected to the control module unit 6 and the single housing or are separated from the control module unit 6 separately formed in the external housing 7, 8).

The control module 6 includes a display panel 9 for displaying various data by the flow measurement system 13 including the calculated flow data externally and a display panel 9 for displaying the data on the mobile communication network 10 or the Internet 11 An output unit 15 having an Ethernet 14 and a microcomputer 16 controlling the overall functions of the control module unit 6, A memory 5 for storing a program and a keypad 17 for processing a user's control signal. At this time, the Ethernet 14 is configured to transmit and receive remote data to and from a PC 18 equipped with a dedicated application capable of remote control.

A control method of the wander measurement system according to the first embodiment of the present invention having the above-described configuration will be described.

First, as shown in FIG. 4, the method of the first embodiment of the present invention operates the flow measurement system provided with the control module unit in the initial state S1 to calculate the calibration test data after performing the calibration test, A first step (S2) of calculating a function and mounting the calculated specific function on the control module unit;

After the first step (S2), the level data (H) and the flow velocity data (V _s ) are measured and stored from the pipeline through a noncontact type level sensor and a flow velocity sensor provided in the flow measurement system, (S3) of calculating a water level ratio (X) from the diameter (D) of the channel by using the water level ratio (H);

A third step (S4) of calculating a flow rate conversion factor by substituting the water level data (H) measured by the control module-attached water level sensor into the characteristic equation (1) after the second process (S3);

A fourth step (S5) of calculating an average flow velocity V _m from the K calculated by the control module and the measured water surface velocity data (V _s ) after the third step (S4);

A fifth step (S6) of, after the fourth step (S5), the control module 6 calculates the water level cross-sectional area M using the equation (3);

After the fifth step (S6) The control module added to calculate the average flow rate (V _m) and the level ratio sectional area actual flow data (Q) of the operation by the pipeline for (M) and the entire pipe cross-sectional area (A) by the equation (4) And a sixth step (S7).

In the sixth step S7, the control module stores the calculated actual flow data Q of the pipeline, displays it externally through the display panel, and transmits the flow data Q through the Ethernet or wireless module connected to the output unit, To a remote location.

When the remote control signal is input to the control module through the Ethernet or wireless module connected to the output unit of the wired / wireless device located at the remote place in the sixth step S7, (S1) to a fifth step (S6).

[Equation 1]

Where K is the flow rate according to the flow rate, X is the water level ratio according to the flow rate, and a, b, c, d, e, f and g are the coefficients calculated in the calibration test procedure.

&Quot; (2) "

K * Surface velocity data (V _S ) = average velocity (V _m )

&Quot; (3) "

G * X = water level specific area (M)

Here, G is a water level silk area constant, and X is a water level ratio.

&Quot; (4) "

Average flow velocity (V _m ) * Total cross-sectional area (A ₊ ) * Water level non-area (M) = Actual flow data (Q)

In the meantime, the process of the first embodiment of the present invention will be described. The calibration test of the first process (S2) first determines the size of the channel to be tested. For example, when the size of the test channel is 150 mm to 300 mm When the number of circles is assumed to be the number of pipes, the flow meter shall be installed in the flow test system with the number of test channels to be tested together with the selected test channel, and then the water flow shall be recorded and the output of the flow meter shall be recorded. In this case, the flow rate to be tested in the above procedure is set to be 10%, 20%, 40%, 60%, 80% and 100% when the maximum flow rate that can be implemented in the test system is taken as 100% , And the interval of the flow rate may be set to be more compact depending on the situation. Therefore, data can be acquired through the calibration test procedure as described above. For example, the implemented actual flow data Q is measured in the reference flow meter installed in the flow test system in the number, the water level data H implemented in the test tube is measured in the flow meter in the number, and the water surface flow rate data V _S can be measured in a number of flow meters. For example, the flow cross-sectional area A of the water flowing from the H to the test tube is calculated, and the average flow rate of the water flowing from the A and the Q through the test tube is calculated V _m the calculation (V _m = Q / a), and calculate the ratio K (flow rate ratio) of V _m to V _S (K = V _m / V _S), and the ratio of the diameter D of a test tube from a H X (water level ratio) can be calculated (X = H / D). Here, since the flow rates tested as described above are various, it can be seen that the data group as shown in Table 1 is formed, and the characteristic function K (Equation 1) can be derived using these data.

Reference flow rate, Q
(m ³ / h) Water level, H
(mm) Water surface velocity, Vs
(m / s) Sectional area, A
(mm ² ) Average flow rate, V _m
(m / s) Flow rate ratio, K
(Dimensionless) Water level ratio, X
(Dimensionless) 5.1 39.7 0.38      5,651 0.25 0.66 0.128 10.1 54.9 0.38      9,041 0.31 0.82 0.177 14.9 64.4 0.37     11,367 0.36 0.99 0.207 15.0 65.5 0.37     11,645 0.36 0.96 0.211 19.4 73.2 0.37     13,638 0.40 1.06 0.235 19.8 72.9 0.37     13,559 0.41 1.10 0.234 24.5 82.1 0.40     16,033 0.42 1.07 0.264 24.1 81.6 0.38     15,896 0.42 1.10 0.262 29.6 90.0 0.41     18,231 0.45 1.10 0.289 34.2 96.5 0.41     20,084 0.47 1.15 0.310 38.7 103.3 0.45     22,058 0.49 1.10 0.332

On the other hand, the specific function derived through the above-described procedure is loaded into the control module unit 6 of the flow measurement system 13 of the present invention, and actual operation is started. After the above process, the control module 6 drives the OS program stored in the memory 5 when the flow measurement system 13 is supplied with power, and controls the flow rate measurement system including the water level sensor 2 and the flow rate sensor 4 Thereby initializing the internal circuit of the microcomputer 13. The control module unit 6 also measures the level data H and the flow rate data V _S from the pipeline through the non-contact type water level sensor 2 and the flow rate sensor 4 provided in the flow rate measuring system 13 And stores it in the memory. The control module 6 then calculates the water level ratio D from the diameter D of the channel by using the water level data H measured by the water level sensor 2 in order to calculate the actual flow rate data Q of the channel X). The control module unit 6 calculates the flow velocity conversion coefficient by substituting the water level data H measured by the water level sensor 2 into Equation 1 which is a characteristic function and also calculates the water velocity data H by using the calculated K and the measured water surface velocity data It calculates an average flow velocity (V _m) by the expression (2) from (V _S). Further, the control module unit 6 is the average flow rate by the equation (4) calculates a flow cross-sectional area (M) by using Equation 3 (V _m) and the flow cross-section (M) and the entire pipe cross-sectional area (A ₊ ) To calculate the actual flow rate data Q of the pipeline.

In this process, the control module unit 6 stores the actual flow rate data Q of the calculated pipeline in the memory 5, displays it externally through the display panel 9, A smart phone 19 equipped with a dedicated application via a mobile communication network 10 or the Internet 11 or a PC 18 mounted with a dedicated program via a wired or wireless equipment at a remote location via a communication module 14 or a wireless module 12, To be displayed. In the meantime, in the above process, the control module unit 6 is provided with a smart phone 19 equipped with a dedicated application via a wired / wireless device, such as a mobile communication network 10 or the Internet 11, When the remote control signal is received from the PC 18 via the Ethernet 14 or the wireless module 12 connected to the output unit 15, the calculation process for the actual flow rate data Q of the channel in accordance with the inputted remote control signal So that it can be remotely controlled as a whole.

According to the noncontact type open channel flow meter according to the first embodiment of the present invention, floating matter does not accumulate in the flowmeter because it is not in contact with the liquid flowing in the channel 1, and the flow rate sensor 4 is connected to the existing ultrasonic flow rate sensor In addition, since the microwave is used, the resolution is excellent, so that the noise due to the Doppler effect, which is unintentionally generated by the particles scattered widely in the fluid, can be suppressed and the precision can be improved.

Example 2

The noncontact type flow measurement system for performing the volume correction in the case where the actual sediment according to the second embodiment of the present invention is present in the pipeline is provided with a non-contact type liquid immersion type liquid immersion type liquid immersion type liquid immersion type A water level sensor 2 for measuring the water level of the water level sensor 1;

A flow sensor 4 integrally provided in the housing 1 together with the level sensor 2 in a non-contact manner to measure the flow rate of the flowing water in the conduit 1;

The water level and flow velocity measurement data measured by the water level sensor 2 and the flow velocity sensor 4 are collected at a predetermined time interval and stored in the memory 5 and the CFD characteristic function method And a control module unit 6 for calculating the actual flow rate of the pipeline 1 by calculating the volume of the actual sediment deposited on the pipeline 1 by the use of the control unit.

The water level sensor 2 and the flow velocity sensor 4 may be coupled to the control module unit 6 and the single housing or may be separately provided from the control module unit 6 separately provided to the external housing 7 Cable 8 may be used.

Meanwhile, a control method of the wander measurement system in which the volume correction is performed in the case where the actual sediment of the second embodiment of the present invention having the above-described configuration exists in the pipeline will be described.

5, when the measured water level is measured by the control module as shown in FIG. 5, when the measured water level is lower than a predetermined value (for example, 50%) of the established pipe diameter, the water flow velocity V _S and the average flow velocity and the second-first process (S101) to execute the characteristic function to reset to change the ratio specific function K (flow rate ratio) of V _m,

A second step (S102) of analyzing a change in the flow velocity using the "CFD (Computational Fluid Dynamics)" in which the control module is mounted after the second step (S101);

After setting the actual height H ₀ of the sediment measured through the CFD after the step 2-2 (S102), the water level data H and the flow rate data V _S are obtained from the pipeline through the non-contact liquid level sensor and the flow velocity sensor, (S103) of calculating and storing the water level ratio X from the diameter D of the channel by using the water level data H measured by the water level sensor;

(S104) of calculating the flow rate ratio K by substituting the water level ratio X including the deposit into the equation (1-1), which is a characteristic function, after the step (2-3) of the process (S103);

(2-5) in which the average flow velocity V _m is calculated from the equation (2-1) from the K-measured water flow velocity data (V _{S )} and the calculated water flow velocity data (V _S ) after the 2-4 step (S104) S105);

Sectional area M obtained by calculating the water level specific cross section M by multiplying the water level ratio G by the water level ratio constant G according to the water level ratio of the control module after the 2-5 step S105, (S106) of calculating the flow cross-sectional area A from Equation (3) from Step 2-6;

After the step 2-6 (S106), the control module adds the height non-constant area constant (G ₀ ) according to the height ratio of the sediment to the height ratio (X ₀ ) of the actual height of the sediment inputted in the first step and the in- 2-7 by the process of calculating the flow cross-sectional area (a ₀₎ of the deposit by using equation 3-1 from the sediment height cross-sectional area ratio (M ₀₎ calculated after obtaining the sediment height cross-sectional area ratio (M ₀₎ (S107) and;

After the step 2-7 (S107), the control module calculates, from the cross-sectional area (A ₀ ) of the flow cross-sectional area A and the cross-sectional area A ₀ calculated in steps 2-6 (S106) and 2-7 (S108) of calculating the actual flow cross-sectional area (A ₁ ) through (A ₁ = A ₀ -A) through 3-2;

The process of claim 2-9 (S109) for calculating the first 2-8 process (S108) after the control module adding the average flow rate (V _m) and the actual flow cross-sectional area the actual data flow (Q1) of the operation by the pipeline (A ₁₎ .

In step 2-9 (S109), the control module stores the calculated actual flow data (Q) of the pipeline, displays the flow data (Q) externally through the display panel, and transmits the flow data And transmitting to the wired / wireless equipment a remote transmission step.

In step 2-9 (S109), when a remote control signal is input to the control module through the wireless module and the Ethernet connected to the output unit in the wired / wireless equipment located at the remote location, 2-1 > step S101 to step 2-8 (S108).

[Equation 1]

Where K is the flow rate according to the flow rate, X is the water level ratio according to the flow rate, and a, b, c, d, e, f and g are the coefficients calculated in the calibration test procedure.

&Quot; (2) "

K * Surface velocity data (V _S ) = average velocity (V _m )

&Quot; (3) "

M * Tube cross-sectional area (A ₊ ) = A flow cross-sectional area

Here, G is a water surface silting area constant according to a water level ratio, X is a water level beam (water level / inside pipe cost), and a water level specific cross-sectional area (M) is calculated as G * X.

[ Equation  3-1]

M ₀ * Tube cross-sectional area (A ₊ ) = A ₀ Flow sectional area

Here, G ₀ is a height specific area constant according to the height ratio of the sediments, X ₀ is the height ratio (height of the sediment / in-pipe expense), and the height of the sediment height (M ₀ ) is calculated as G ₀ * X ₀

[Equation 3-2]

Flow cross section (A) - Sediment flow cross section (A ₀ ) = Actual flow cross section (A ₁ )

[ Equation  4-1]

Average flow velocity (V _m ) * Actual flow cross-sectional area (A ₁ ) = Actual flow data (Q 1)

Here, the control module 6 determines whether the measured water level is a predetermined value (for example, 50% or more) of the pipe diameter as a result of measuring the water level, ), The characteristic function reset is performed to change the specific function K that is the ratio of the water flow velocity V _s and the average flow velocity V _m .

That is, the control module section 6 analyzes the change of the flow velocity using the "CFD (computational fluid dynamics)" which is mounted. The control module unit 6 sets the actual height H ₀ of the sediment measured through the CFD and then outputs the level data H and the flow rate H from the pipeline through the noncontact type water level sensor 2 and the flow rate sensor 4, stores the measurement data (V _s) and calculates the level data (H) water level ratio (X) from the diameter (D) of the channel using the level measured by the sensor (2). Further, the control module unit 6 calculates the flow velocity ratio K by substituting the water level ratio X including sediments into Equation 1-1, which is a characteristic function, and calculates the measured water surface velocity data V _s ) calculates an average flow velocity (V _m) by the following equation from 2-1. Further, the control module 6 calculates the water level cross-sectional area M by multiplying the water level ratio G by the water level ratio X with the water level ratio M, Sectional area (A) is calculated using Equation 3, and the height ratio (G ₀ ) according to the height ratio of the sediment to the height ratio (X ₀ ), which is the cost ratio in the piping in the first process, by using equation 3-1 from the sediment height cross-sectional area ratio (M ₀₎ calculated after obtaining the (M ₀₎ and calculates the flow cross-sectional area (a ₀₎ of the sediment. Then, the control module 6 calculates Equation 3-2 from the flow cross-sectional area A and the cross-sectional area A ₀ of the deposit calculated in steps 2-6 (S106) and 2-7 (S107) The actual flow cross-sectional area A ₁ is calculated (A ₁ = A ₀ -A), and the actual flow volume data Q ₁ is calculated by calculating the average flow velocity V _m and the actual flow cross-sectional area A ₁ .

Example 3

In the third embodiment of the present invention, as shown in FIG. 3, the control module unit 6 is integrally provided at one side of the housing 3 of the flow measurement system 13 to detect gas and output the detection result A gas detector 21 is provided.

The gas detector 21 integrally installed in the flow measurement system 13 as described above is installed in the manhole 20 when the operator takes the flow measurement system 13 of the present invention and enters the manhole 20 of the conduit 1, ), Analyzes the detected gas, and inputs the analysis result to the control module unit 6. The control module unit 6 recognizes the gas information existing in the manhole 20 of the pipeline 1 inputted from the gas detector 21 and displays the resultant data through the display panel 9 to the outside do. In addition, when the concentration of the gas detected by the gas detector 21 is dangerous to the operator, the control module unit 6 generates a danger warning signal through the alarm generating unit 22, To ensure safety.

Example 4

In the fourth embodiment of the present invention, the control module unit 6 is connected to a smart phone 19 equipped with an Android-based dedicated application capable of remotely controlling the function of the flow measurement system 13, The wireless module 12 can be further provided via the output unit 15.

The control module 6 stores the actual flow rate data Q of the calculated pipeline in the memory 5 and displays the flow rate data Q externally through the display panel 9 and the Ethernet 14 Or transmitted to a PC 18 equipped with a dedicated program or a smart phone 19 equipped with a dedicated application via a wired or wireless equipment such as a mobile communication network 10 or the Internet 11 via a wireless module 12 or a wireless module 12 Can be displayed.

In the meantime, in the above process, the control module unit 6 controls the operation of the smartphone 19 or the dedicated program installed on the mobile phone 10 or the Internet 11, When the remote control signal is received from the PC 18 via the Ethernet 14 or the wireless module 12 connected to the output unit 15, the calculation process for the actual flow rate data Q of the channel in accordance with the inputted remote control signal So that it can be remotely controlled as a whole.

Example 5

In the fifth embodiment of the present invention, the control module unit 6 is provided with a HYBRID FMCW radar module (hereinafter referred to as " HYBRID FMCW radar module ") which is integrally installed at one side of the housing 3 of the flow measurement system 13, Not shown).

Here, in the conventional flow measurement system, the flow rate sensor for measuring the flow rate and the ultrasonic module for measuring the level are separated separately, so that the measurement cost is increased when the flow measurement system 13 is designed or measured. However, in the present invention, the HYBRID FMCW radar module capable of simultaneously performing the flow velocity measurement and the level measurement can be integrally installed in the housing 3 of the flow measurement system 13, so that the flow velocity measurement and the level measurement can be performed simultaneously have.

Example 6

In the sixth embodiment of the present invention, the control module unit 6 is provided with a water level sensor for measuring the water level on one side of the housing 3 of the flow rate measuring system 13 in any one of Pulse radar, cw radar and fm cw radar can do.

In conventional flow measurement systems, the water level sensor is usually constituted by an ultrasonic sensor. Such an ultrasonic sensor has a region where it is not operated, and is susceptible to the environment such as moisture, steam, and gas. Therefore, there is a limitation in accurately measuring the water level.

However, in the present invention, the problem of the conventional ultrasonic sensor is solved by providing any one of the pulse radar, the cw radar, and the fm cw radar as the water level sensor for measuring the water level at one side of the housing 3 of the flow measurement system 13 .

1: channel 2: water level sensor
3: housing 4: flow rate sensor
5: memory 6: control module section
7: External housing 8: Cable
9: Display panel 10: Mobile communication network
11: Internet 12: Wireless module
13: Flow measurement system 14: Ethernet
15: Output unit 16: Microcomputer
17: Keypad 18: PC
19: Smartphone 20: Manhole
21: gas detector 22: warning generator

Claims (10)

A water level sensor installed in the channel of the water channel in a non-contact manner and measuring the water level of the channel;
A flow rate sensor integrally installed in the housing together with the water level sensor in a noncontact manner in the pipeline and measuring a flow rate of water flowing through the channel;
The water level and flow rate measurement data measured by the water level sensor and the flow rate sensor are collected at a predetermined time interval and stored in a memory. The measured volume and flow rate data are used to calculate the volume of actual sediment deposited in the pipeline And a control module for calculating the actual flow rate of the pipeline by calculating the actual flow rate of the pipeline.
The control module unit may further include a function of calculating a flow rate by obtaining a flow velocity conversion coefficient and an average flow velocity of water flowing in the pipe using the water level and flow velocity measurement data obtained from the water level sensor and the flow velocity sensor installed on the channel of the waterway,
Wherein the control module unit further comprises a smart phone equipped with an Android-based dedicated application capable of remotely controlling the function of the flow measurement system and a wireless module capable of transmitting and receiving remote data via an output unit. Liquid flow measurement system. delete delete The method according to claim 1,
Wherein the control module unit is further provided with a gas detector integrally installed at one side of the housing for detecting gas and outputting the detection result. The method according to claim 1,
Wherein the control module unit comprises a water level sensor for measuring a water level at one side of the housing, the water level sensor being configured of one of a pulse radar, a cw radar, and a fm cw radar. The method according to claim 1,
Wherein the control module unit further comprises a HYBRID FMCW radar module integrally installed at one side of the housing and capable of performing flow rate measurement and level measurement at the same time. A first step of calculating a characteristic function expressed by Equation (1) and mounting the calculated specific function on a control module unit by operating a flow measurement system provided with a control module unit to calculate a calibration test data after executing a calibration test;
After the first process, the level data H and the flow velocity data V _S are measured and stored from the pipeline through the noncontact type level sensor and the flow velocity sensor provided in the flow measurement system, and the level data measured by the level sensor 2 A second step of calculating a water level ratio X from the diameter D of the pipeline by using the water level H;
A third step (S4) of calculating a flow rate conversion coefficient by substituting the water level data (H) measured by the control module-attached water level sensor into the characteristic function (1) after the second process;
A fourth step of calculating an average flow velocity V _m from the K calculated by the control module and the measured water surface velocity data V _S after the third step S4;
A fifth step of calculating, by the control module, the water level specific cross-sectional area (M) using the equation (3) after the fourth step;
The fifth step (S6) after the control module portion calculates the average flow rate (V _m) and the level ratio cross-section (M) and the actual flow data (Q) of the entire pipe cross-sectional area (A ₊₎ calculated on the pipeline by the equation (4) And a sixth step of controlling the flow rate of the non-contact type flowmeter.
[Equation 1]

Where K is the flow rate according to the flow rate, X is the water level ratio according to the flow rate, and a, b, c, d, e, f and g are the coefficients calculated in the calibration test procedure.
&Quot; (2) "
K * Surface velocity data (V _S ) = average velocity (V _m )
& Quot; ( 3) & quot ;
G * X = water level specific area (M)
Here, G is a water level silk area constant, and X is a water level ratio.
&Quot; (4) "
Average flow velocity (V _m ) * Total cross-sectional area (A ₊ ) * Water level non-area (M) = Actual flow data (Q) 8. The method of claim 7,
In the sixth step, the control module stores the actual flow data (Q) of the calculated pipeline, displays it externally through the display panel, and transmits it to the wired or wireless equipment at a remote location via an Ethernet or a wireless module connected to the output unit Further comprising the step of: determining a flow rate of the fluid in the non-contact type flow measurement system. 8. The method of claim 7,
When a remote control signal is input to the control module through the Ethernet 14 or the wireless module connected to the output unit of the wired / wireless equipment located in the remote place, the control module receives the remote control signal from the first process to the Further comprising: a remote control step of remotely executing step 5 of the noncontact flow measurement system. A second step of performing a characteristic function reset to change a specific function K of the water flow velocity V _S and the average flow velocity V _m when the measured water level is equal to or less than a predetermined value of the set pipe diameter as a result of measuring the water level by the control module,
A second step (2-2) of analyzing a change in a flow rate using a CFD (computational fluid dynamics) equipped with a control module after the step 2-1;
After the step 2-2, the control module sets the actual height H ₀ of the sediment measured through the CFD, and then outputs the level data H and the flow velocity data V _S from the pipeline through the non-contact liquid level sensor and the flow velocity sensor, (2) calculating a water level ratio (X) from the diameter (D) of the channel by using the water level data (H) measured by the water level sensor;
Step 2-4 of calculating the flow rate ratio K by substituting the water level ratio (X) including the sediment into the equation (1-1), which is a characteristic function, after the step (2-3);
(2-5) calculating an average flow velocity (V _m ) from the K calculated by the control module and the measured water surface velocity data (V _S ) by the equation (2-1) after the step 2-4;
Sectional area M from the water level cross-sectional area M obtained by multiplying the water level ratio G by the water level ratio X with the water level ratio G according to the water level ratio of the control module after step 2-5, (2-6) of calculating the flow cross-sectional area (A) using the equation (3);
After step 2-6, the control module multiplies the actual height of the sediment inputted in the first step and the height ratio (G ₀ ) according to the height ratio of the sediment to the height ratio (X ₀ ) Sectional area (A ₀ ) of the sediment using Equation (3-1) from the calculated sectional height of the sediment (M ₀ ) after calculating the specific cross-sectional area (M ₀ );
After the step 2-7, the control module calculates the actual flow cross-sectional area (A) from the cross-sectional area (A ₀ ) of the sediments and the flow cross-sectional area (A) calculated in steps 2-6 and 2-7 A ₂ );
(2-9) for calculating the actual flow rate data (Q1) of the pipeline by calculating the average flow velocity (V _m ) and the actual flow cross-sectional area (A ₁ ) of the control module after the step 2-8. Method of controlling the system.
[Equation 1]

Where K is the flow rate according to the flow rate, X is the water level ratio according to the flow rate, and a, b, c, d, e, f and g are the coefficients calculated in the calibration test procedure.
&Quot; (2) "
K * Surface velocity data (V _S ) = average velocity (V _m )
&Quot; (3) "
M * Tube cross-sectional area (A ₊ ) = A flow cross-sectional area
Here, G is a water surface silting area constant according to a water level ratio, X is a water level beam (water level / inside pipe cost), and a water level specific cross-sectional area (M) is calculated as G * X.
[ Mathematical Expression 3-1]
M ₀ * Tube cross-sectional area (A ₊ ) = A ₀ Flow sectional area
Here, G ₀ is a height specific area constant according to the height ratio of the sediments, X ₀ is the height ratio (height of the sediment / in-pipe expense), and the height of the sediment height (M ₀ ) is G ₀ * X ₀ .
[Equation 3-2]
Flow cross section (A) - Sediment flow cross section (A ₊ ) = Actual flow cross section (A ₁ )
[Mathematical expression 4-1]
Average Flow Rate (V _m ) * Actual Flow Cross Section (A ₁ ) = Actual Flow Data (Q)

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