KR102419037B1 - Measuring device of water quality and water flow of storm overflow chamber when raining - Google Patents

Abstract

The present invention relates to an apparatus for sampling untreated water and measuring a flowrate in case of rainfall. The apparatus includes: an opening/closing detection sensor (40) sensing whether an opening/closing plate (30) in an upper part of a storm overflow chamber (20) is open or closed, to determine clear sky/rainfall situations; a sewage guide barrier (50) installed on a sewer pipe (10); a flowmeter (60) installed in an upper part of the sewer pipe (10) to sense a water level in the sewer pipe (10) or the sewage guide barrier (50); an underwater pump (70) installed inside the storm overflow chamber (20); an opening/closing valve (80) installed beside an intercepting sewer (22) of the storm overflow chamber; and a control part (90). The control part (90) closes the opening/closing valve (80) in a state, in which the clear sky situation and the rainfall situation are divided depending on whether the opening/closing detection sensor (40) is on or off, to operate the underwater pump (70) to store water in a plurality of water sampling containers (B1-B7) when the water sensor (24) senses a predetermined water level is reached in the storm overflow chamber (20), and calculates the flowrate of sewage introduced into the storm overflow chamber (20) per unit time in accordance with a flow velocity and a cross sectional area calculated based on the water level sensed by the flowmeter (60) and the width (w) of the sewage guide barrier (50), and the flowrate of untreated water discharged into the river per unit time in accordance with a flow velocity and a cross sectional area calculated based on the water level sensed by the flowmeter (60) and the width (W) of the sewer pipe (10), wherein a manifold valve (100) is provided between the underwater pump (70) and the water sampling containers (B1-B7) to collect sewage samples into the plurality of water sampling containers (B1-B7) at time intervals. Therefore, the present invention is capable of calculating an accurate planned sewage amount and reflecting the amount to a future sewage facility design.

Description

Measuring device of water quality and water flow of storm overflow chamber when raining

The present invention makes it possible to measure the water collection and flow rate for the measurement of the collection and inflow of sewage flowing into the stormwater chamber and the quality of the untreated water discharged into the river during rainfall for efficient sewage management with one facility.

Up to now, the sewage project has been mainly promoted by Cheongcheon City, and the ability of treatment facilities or related systems to prepare for an increase in the amount of sewage during rainfall is insufficient. Simple treatment (primary sedimentation + disinfection) is being carried out, and most of them are discharged into rivers by blocking or bypassing the inflow.

In a sewage treatment facility with a fractionation type sewage pipe, if the inflow rate increases due to the inflow water (RDII) in the sewage main pipe during rain, overflow water (SSOs) is generated before flowing into the treatment facility by adjusting the inflow flow rate at the inflow sluice gate of the treatment facility. There is concern about the deterioration of water quality in public waters.

In addition, it is difficult to expect effective sewage treatment performance without continuous monitoring and management even for sewage systems designed and built through thorough quality control. In particular, various problems such as RDII and overflow water (CSOs/SSOs) occur during rain, so in the case of rain, stronger maintenance is required than in Cheongcheon. Accordingly, the Ministry of Environment revised the Sewerage Act to make it mandatory to monitor the sewerage during rainfall in order to manage the sewage system periodically and systematically, such as diagnosing the condition and problems of the sewer through sophisticated monitoring of the sewage during rainfall, and establishing and implementing improvement measures. .6 was implemented.

However, there is currently no standardized monitoring method for selecting facilities and branches to be monitored, setting items and periods, etc. to accurately diagnose the condition and problems of the sewage system during rainfall. There is no standardized modeling and scenario analysis method. In the future, for efficient operation and management of sewage pipelines during rainfall, it is necessary to develop a monitoring method to accurately diagnose the condition and problems of the sewage during rainfall, draw improvement measures to solve the problem, and derive a modeling method for analyzing various scenarios.

Among these, the most important and basic element is the sewage pipe monitoring plan, which means the flow and water quality surveys in Cheongcheon City and rainfall, which are basic data on the sewage system and discharge water area.

On the other hand, even in the prior art, a device for measuring the inflow amount and water quality of sewage flowing into a sewage treatment plant has been proposed on the storm sewer side installed in the discharge water body of the sewage pipe, but this is limited to the sewage flowing into the sewage treatment plant, and the untreated sewage discharge situation, that is, However, there is no means to collect data on the flow rate and water quality of sewage discharged into rivers during rainfall in order to determine whether the discharge water quality standards are being complied with. Independently installed and operated as a means for measuring the flow rate and water quality of sewage discharged into rivers is inevitably a significant burden in terms of installation cost and maintenance.

Korea Patent Registration No. 10-0522129 (Registered on October 10, 2005) Korean Patent Registration No. 10-1390111 (Registered on April 22, 2014) Korean Patent Registration No. 10-1756584 (registered on July 4, 2017) Korean Patent No. 10-1920773 (Registered on November 15, 2018) Korean Patent Registration No. 10-2078721 (Registered on Feb. 12, 2020)

The present invention has been devised to meet the above needs, and measuring the amount of inflow and sewage collection in Cheongcheon City and the collection and flow information of untreated water discharged into the river during rainfall with one facility provided on the storm water chamber side. By converting it into data, it is possible to accurately calculate the planned amount of sewage and to reflect it in the design of sewage pipelines and sewage treatment facilities in the future.

In order to achieve the above object, according to the present invention, a rainwater chamber is installed at the end of a sewage pipe, and an opening and shutting plate is provided on the upper part of the rainwater chamber. In the case of rain, the opening and closing plate is closed so that the untreated water of the sewage pipe is discharged into the river,

An opening/closing sensor for detecting whether the opening/closing plate is opened or closed to determine whether it is clear or rainy, and a sewage induction barrier installed so as to be able to adjust the width to a predetermined height in the sewage pipe to guide sewage into rainwater; A flow meter installed on the upper part of the sewage pipe to detect the water level and flow velocity inside the sewage pipe or a sewage induction barrier, a water collecting pump installed inside the storm water chamber, and a water collecting pipe connected from the storm water chamber to the sewage treatment plant. It includes an on/off valve and a control unit, wherein the control unit closes the on/off valve in a state determined to be clear and rainy depending on whether the opening/closing detection sensor is on/off, and when the water level sensor detects that the inside of the rainwater chamber reaches a certain water level After driving the submersible pump for water collection inside the rainwater chamber and storing it in a plurality of collection containers, the opening/closing valve is opened, and the water level detected by the flow meter and the cross-sectional area and flow rate calculated by the width of the sewage induction barrier are excellent per unit time Calculate the flow rate of the untreated water discharged into the river per unit time according to the flow rate of sewage flowing into the chamber, the cross-sectional area and flow rate calculated by the water level detected by the flow meter and the width of the sewage pipe, but between the submersible pump and the water tank Provided is an apparatus for collecting and measuring the flow rate of untreated water during rainfall, which is provided with a manifold valve that is opened and closed by the control unit so that the sample pumped from the submersible pump can be collected into a plurality of water collecting troughs with a time difference.

Preferably, in the manifold valve, an inlet is formed on one side of the block and an outlet is formed on the other side of the block, a communication path is formed between the inlet and the outlet, and a plurality of branch paths are formed at regular intervals in the communication path, It is connected to each water tank, and the plurality of branch passages have a structure in which pistons moving forward and backward by a pneumatic cylinder are installed, respectively;

The plurality of water tanks are mounted on a water tank holder, and the water tank holder includes a frame, a plurality of cylinders installed on the upper part of the frame, and the plurality of cylinders are respectively installed to be lifted and lowered inside the plurality of cylinders, and the water tank holder is mounted on the lower end. a slider having a holding ring for doing so; a support plate fixed to the slider and elevating along the inside of the cylinder; a spring having an upper end or a lower end in contact with the support plate and a lower end or upper end contacting a lower portion of the cylinder; It consists of a limit switch installed on the lower side and contacting the support plate by the lowering of the slider, and after the pumping of the submersible pump is started, the sewage sample is filled in the first collection tub by sequential opening of the manifold valve. 1 As the weight of the water tank increases, the slider descends and the support plate comes into contact with the limit switch and the limit switch is turned off. The manifold valve is opened so that the operation of filling the second water tank with the sewage sample is sequentially repeated.

According to the present invention, by using a single measurement facility, not only the collection for measuring the flow rate and water quality of sewage flowing into the storm chamber in Cheongcheon, but also the collection for measuring the flow rate and water quality of untreated water discharged into the river during rainfall is performed. By converting it into data, it has a useful effect that it can be used as basic data that can be reflected in the accurate calculation of the planned sewage amount and the design of sewage pipelines and sewage treatment facilities in the future.

1 is a side view of an apparatus for collecting and measuring the flow rate of untreated water during rainfall according to an embodiment of the present invention;
2 is a plan view of the device for collecting and measuring the flow rate of untreated water shown in FIG. 1;
3 is an internal configuration diagram of the control box shown in FIG. 1;
4 is a block diagram of the manifold block shown in FIG. 3;
5 is a perspective view of the water tank holder shown in FIG. 3;
6 is a side view of the water tank holder shown in FIG. 5;
7 is a front view showing the sequential water collection state of the water collection container.

Hereinafter, preferred embodiments that do not limit the present invention will be described in detail with reference to the accompanying drawings.

1 to 7 schematically show an apparatus for collecting and measuring the flow rate of untreated water during rainfall according to an embodiment of the present invention.

Although 7 water collecting tanks are shown in the accompanying drawings, the present invention is not limited thereto, and it is of course possible to install the number of water collecting tanks in accordance with the regulations for monitoring untreated sewage during rainfall required by the Sewerage Act.

As shown in the accompanying drawings, in the present invention, the rainwater chamber 20 is installed at the end of the sewage pipe 10, and the opening and closing plate 30 is provided on the upper part of the rainwater chamber 20. (30) is opened, and the sewage of the sewage pipe line (10) flows into the storm water chamber (20) and flows out to the sewage treatment plant through the collecting pipe (22). In that untreated water is discharged into a river,

An opening/closing sensor 40 for detecting whether the opening/closing plate 30 is opened or closed to determine whether it is in clear weather or raining, and the sewage pipe 10 are installed so as to be able to adjust the width to a predetermined height, ), a sewage induction barrier 50 for guiding sewage into the sewage pipe 10, and a flow meter 60 installed on the top of the sewage pipe 10 to detect the water level and flow velocity inside the sewage pipe 10 or the sewage induction barrier 50, and , the submersible pump 70 for water collection installed inside the rainwater chamber 20, and the on-off valve 80 and the control unit 90 installed on the side of the collecting pipe 22 connected from the rainwater chamber 20 to the sewage treatment plant. Including, the control unit 90 closes the opening/closing valve 80 in a state determined to be clear and rainy depending on whether the opening/closing detection sensor 40 is on/off, and the inside of the rainwater chamber 20 reaches a certain water level When the water level sensor 24 detects that The flow rate of sewage flowing into the storm water chamber 20 per unit time according to the cross-sectional area and flow rate calculated by the water level sensed by the flow meter 60 and the width w of the sewage induction barrier 50, and the flow meter 60 Calculate the flow rate of untreated water discharged into the river per unit time according to the cross-sectional area and flow rate calculated by the water level detected in the ), a manifold valve 100 that is opened and closed by the control unit 90 is provided between it is meant to be

In this embodiment, the manifold valve 100 has an inlet 112 connected to the inlet pipe L1 to the submersible pump 70 on one side of the block 110 as shown in FIGS. 3 and 4 . and an outlet 114 is formed on the other side, a communication path 116 is formed between the inlet 112 and the outlet 114, and a plurality of branch paths 118 at regular intervals in the communication path 116 are provided. The hoses (H1 to H7) are connected to each water tank (B1 to B7), and to the plurality of branch passages 118, the pistons (P1 to P7) that move forward and backward by the pneumatic cylinders (C1 to C7), respectively. This is the installed structure.

Accordingly, when the pistons (P1 to P7) of each pneumatic cylinder (C1 to C7) are lowered, the supply to the water collection tank (B1 to B7) is not made, and the piston (P1) of each pneumatic cylinder (C1 to C7) is not made. When ~ P7) rises sequentially, the branch path 118 is selectively opened so that sewage samples can be collected into each water collection tank.

In this embodiment, the plurality of water tanks (B1 to B7) are mounted on the water tank holder 200, and the water tank holder 200 includes a frame 210 and a frame 210 as shown in Figs. , a plurality of cylinders 220 installed on the upper portion of the frame 210, and a mounting ring for mounting the water tanks (B1 to B7) at the lower end of the plurality of cylinders (220), respectively, to be lifted and lowered inside the cylinder (220) ( A slider 230 with 232 , a support plate 240 fixed to the slider 230 and elevating along the inside of the cylinder 220 , and an upper end or lower end in contact with the support plate 240 and a lower end or upper end is a spring 250 in contact with the lower part of the cylinder 220, and a limit switch 260 installed on the lower side of the cylinder 220 and contacting the support plate 240 by the lowering of the slider 230. After the pumping of the submersible pump 70 is started, as shown in FIG. 7 , the first water tank B1 is filled with the sewage sample by the sequential opening of the manifold valve 100, and the first water tank As the weight of (B1) increases, the slider 230 descends so that the support plate 240 comes into contact with the limit switch 260 and the limit switch 260 is turned off, thereby stopping the pumping operation of the submersible pump 70. After the set time has elapsed, the operation of the submersible pump 70 is started again, the manifold valve 100 is opened, and the operation of filling the second water tank B2 with the sewage sample is sequentially repeated.

In accordance with the measurement and recording method stipulated in the Enforcement Decree of the Sewerage Act, the above-mentioned water collection process is carried out at least twice a year for the measurement point, from the start of the rain to the point when the sewage is not discharged from the rainwater after the end of the rain. The flow rate is measured at intervals of 10 minutes or less, and water quality is collected at intervals of 10 minutes or less in the initial period of rainfall (within 1 hour), and after that, the measurement interval is increased and in the case of medium concentration, the measurement interval is 30 to 60 minutes. , in the case of a low concentration, the control unit 90 may be set to collect water every 1 to 2 hours.

In this embodiment, the compression coil spring 250 is compressed as the weight of the water collecting tanks B1 to B7 increases while the support plate 240 is supported by the compression coil spring 250 and maintained in a lifted state. , the present invention is not limited thereto, and by connecting a tension coil spring to the upper side of the slider 230, the tension coil spring supports the slider 230. It goes without saying that the support plate 240 may be manufactured to contact the limit switch 260 while stretching.

In addition, in this embodiment, the slider 230 has a male screw portion formed along the longitudinal direction, and the support plate 240 has a female screw portion formed so that the depth at which the support plate 240 is fastened to the male screw portion of the slider 230 is different. By doing so, it is possible to set the weight of the sewage collected in the water collection tank.

In this embodiment, when the water collecting tanks B1 to B7 from which the sewage sample is collected are separated from the mounting ring 232 of the slider 230, the slider 230 rises again by the restoring force of the spring 250 to its initial state. It can be used to collect again at a different time or move to another place to collect.

In the drawing, reference numeral 1 denotes a control box installed on the ground, reference numeral 12 denotes a contaminant screen installed on the upstream side of the sewage pipe, reference numeral 96 denotes an air compressor, and reference numeral 98 denotes the compressed air supplied from the air compressor through the air hose. As an air valve unit for supplying each pneumatic cylinder (C1 to C7) of the fold valve 100, the opening and closing of the air valve unit is controlled by a program set in the control unit 90, and the opening and closing operation of the manifold valve 100 This is done sequentially, and the compressed air supplied from the air compressor 96 is selectively supplied to the upper and lower ports of the pneumatic cylinders C1 to C7 through the air hose, thereby advancing (closed) and retreating (opening). action is made

In addition, reference numeral 118a denotes a discharge port formed on the lower side of the branch passage 118 , to which hoses H1 to H7 connected to each water tank B1 to B7 are connected, and 118b denotes the branch passage 188 . It is an air vent formed on the upper side of the

In addition, a ball valve 115 is provided at the outlet 114 side of the manifold valve 100 , and the ball valve 115 is used to clean the communication path 116 of the manifold valve 100 . By opening and operating the submersible pump 70, the stagnant sewage sample can be removed. It is possible to improve the accuracy of measuring the water quality of the actual sewage sample by setting it to be able to collect the sewage sample after

In this embodiment, the opening/closing valve 80 is closed only for a predetermined time for water collection in clear weather and then reopened to allow sewage to flow normally to the sewage treatment plant, and to prevent untreated water from flowing into the sewage treatment plant in case of rain. It is preferable to maintain a closed state to block it, and the opening/closing valve 80 may be applied to various types of opening/closing valves in addition to the air inflatable type as shown in the drawings.

In this embodiment, the opening/closing detection sensor 40 uses a proximity sensor installed inside the rainwater chamber 20, which is determined to be closed when the opening/closing plate 30 is horizontally closed while being pushed by the increased amount of sewage. to transmit a signal, and when the amount of sewage decreases, one side is opened by the weight 32 so that one side is lifted, and when it is separated from the proximity sensor, it is determined to be open and a signal is transmitted. ) is not limited to the proximity sensor installed inside the rainwater chamber, and can be replaced with a tilt sensor attached to the bottom of the opening/closing plate 30, a rotation angle detection sensor installed on the rotation shaft of the opening/closing plate, or a limit switch, etc. , any type of sensor or switch can be used as long as it can accurately detect whether the opening/closing plate is opened or closed.

Meanwhile, in the drawings, reference numeral 34 denotes a pneumatic cylinder for forcibly opening the opening/closing plate 30 , and 36 denotes a pneumatic cylinder for forcibly closing the opening/closing plate 30 , and the flow rate of the opening/closing plate 30 is increased during rain. It is in a closed state by the overflow rate, and at this time, in the state in which the on-off valve 80 is closed for water collection in the rainwater chamber 20, the opening/closing plate 30 is forcibly opened using the pneumatic cylinder 34 to To allow rainwater to flow into the chamber 30, and when a predetermined water level is detected by the water level sensor 24, the submersible pump 70 is operated to collect water, and then again using the pneumatic cylinder 36 to close the opening/closing plate 30 When the opening and closing plate 30 is maintained in a closed state by the flow rate and flow rate of rainwater.

The opening/closing valve 80 is closed in advance with the opening/closing plate 30 closed, thereby blocking the inflow of sewage that flows backward from the collecting conduit 22 side. will prevent

In this embodiment, the sewage induction barrier 50 is for allowing the sewage flowing through the sewage pipe to be guided to the storm drain 20 side, and the width W of the sewage pipe 10 is usually the same as that of the storm drain 20. Since it is larger than the width (w), it is manufactured in a way that can be installed with an appropriate width and height in consideration of the normal amount of sewage at the installation site and the specifications of the storm water chamber so that all the sewage of the sewage pipe in Cheongcheon can flow into the storm chamber 20. it is preferable

The sewage induction barrier 50 is a kind of funnel such that the front side is made to a size that can cover the entire width of the sewage pipe by bending a stainless steel plate, and the rear side flowing into the storm water chamber is reduced in width according to the left and right width of the rain water chamber The flow meter 60 emits ultrasonic or laser beam toward the approximate center of the rear side flowing into the storm water chamber and measures the distance, thereby changing the water level of the sewage flowing into the storm chamber and the opening and closing plate 30 In the closed state, it is possible to detect a change in the level of untreated water discharged toward the river beyond the sewage induction barrier 50 .

The water collecting submersible pump 70 is installed inside the rainwater chamber 20, and the driving of the water collecting submersible pump 70 is the opening/closing detection sensor 40 for detecting whether the rotating opening/closing plate 30 is opened or closed. It is selected by on/off, when the opening/closing detection sensor 40 is in an off state, that is, when the opening and closing plate 30 is open as shown in FIG. When the pump 70 pumps sewage according to a time interval determined by a timer provided in the control unit 90 and stores it in the water collecting tanks B1 to B7 installed inside the control unit 90, it is collected and the turbidity of the sewage in the laboratory; Various water quality data such as hydrogen ion concentration, electrolyte concentration, BOD, COD, DO are measured, and when the opening/closing detection sensor 40 is on, that is, when the opening/closing plate 30 is closed ) pumping the untreated water flowing into the rainwater chamber 20 at a predetermined time by a timer provided in the . Various water quality data such as turbidity, hydrogen ion concentration, electrolyte concentration, BOD, COD, DO are measured.

On the other hand, the flow meter 60 is installed so that it can be moved along the rail 62 installed along the longitudinal direction of the sewage pipe 10 because the difference in the amount of sewage inflow is usually large according to regional characteristics, so that in places where there is usually a lot of flow. As shown in the drawing, the position of the flow meter 60 is set at a position corresponding to the full width W of the sewage pipe 10, and in a place where the flow rate is usually low, the installation position of the flow meter 60 is set to the sewage induction barrier 50 ) to detect the water level and flow velocity in the width w of the sewage induction barrier 50, so that when the water level rises higher than the height of the sewage induction barrier 50, automatically when calculating the flow rate ) to the width (W).

The flow rate measurement of sewage and untreated water in the control unit 90 is detected by the flow meter 60 when the opening/closing sensor 40 is in an off state, that is, in an open state, that is, the opening/closing plate 30 is open. The cross-sectional area calculated by the sewage water level inside the sewage induction barrier 50 and the width w of the sewage induction barrier 50 is calculated, and at the same time, the measured flow rate of the sewage is calculated and introduced into the rainwater chamber 20 per unit time. The inflow of sewage can be measured, and when the opening/closing detection sensor 40 is on, that is, when the opening/closing plate 30 is closed, the sewage induction barrier 50 detected by the flow meter 60 ) Inside - At this time, as untreated water is discharged into the river through the closed opening/closing plate 30 of the rainwater chamber 20 over the sewage induction barrier 50 of the sewage pipe 10 by the increased rainwater, the sewage induction barrier 50 Since untreated water flows over the entire width of the sewage pipe 10 while losing the function of The flow rate of untreated water to be discharged is calculated, and such data on the flow rate of sewage and untreated water are stored in the memory 92 in the control unit 90 and then in real time through the communication unit 94 in the remote monitoring system (2) It is transmitted by wire or wireless to be accumulated, and water quality information is collected and measured after collecting and measuring water collection tanks (B1~B7) and accumulated as data.

1: control box
2: Monitoring system
10: sewer pipe
12 : foreign matter screen
20 : rain soil
22 : Collecting conduit
24: water level sensor
30: open/close plate
32: weight
34,36: pneumatic cylinder
40: open/close sensor
50: sewage induction barrier
60: flow meter
62: rail
70: submersible pump for water collection
80: on/off valve
90: control unit
92: memory
94: communication department
96: air compressor
98: air valve unit
100: manifold valve
110 : block
112: inlet
114: outlet
115: ball valve
116: communication path
118: to branch
118a: exhaust port
118b: air vent,
200: water tank holder
210: frame
220: cylinder
230: slider
232: hook
240: support plate
250: spring
260: limit switch
B1~B7: water tank
C1~C7 : Pneumatic cylinder
H1~H7 : Hose
L1 : Inlet pipe
W : Width of sewer pipe
w : width of sewage induction barrier

Claims (5)

A rainwater chamber 20 is installed at the end of the sewage pipe 10, and an opening/closing plate 30 is provided on the upper part of the rainwater chamber 20. Sewage flows into the rainwater chamber 20 and flows out to the sewage treatment plant through the intercept conduit 22, and in case of rain, the opening and closing plate 30 is closed so that the untreated water of the sewage pipe 10 is discharged into the river,
An opening/closing sensor 40 for detecting whether the opening/closing plate 30 is opened or closed to determine whether it is in clear weather or raining, and the sewage pipe 10 are installed so as to be able to adjust the width to a predetermined height, ), a sewage induction barrier 50 for guiding sewage into the sewage pipe 10, and a flow meter 60 installed on the top of the sewage pipe 10 to detect the water level and flow velocity inside the sewage pipe 10 or the sewage induction barrier 50, and , the submersible pump 70 for water collection installed inside the rainwater chamber 20, and the on-off valve 80 and the control unit 90 installed on the side of the collecting pipe 22 connected from the rainwater chamber 20 to the sewage treatment plant. Including, the control unit 90 closes the opening/closing valve 80 in a state determined to be clear and rainy depending on whether the opening/closing detection sensor 40 is on/off, and the inside of the rainwater chamber 20 reaches a certain water level When the water level sensor 24 detects that The flow rate of sewage flowing into the storm water chamber 20 per unit time according to the cross-sectional area and flow rate calculated by the water level sensed by the flow meter 60 and the width w of the sewage induction barrier 50, and the flow meter 60 Calculate the flow rate of untreated water discharged into the river per unit time according to the cross-sectional area and flow rate calculated by the water level detected in the ), a manifold valve 100 that is opened and closed by the control unit 90 is provided between A device for collecting and measuring the flow rate of untreated water during rainfall, characterized in that it is provided.
The method according to claim 1,
The manifold valve 100 has an inlet 112 connected to the inlet pipe L1 to the submersible pump 70 on one side of the block 110 and an outlet 114 is formed on the other side, and the inlet 112 ) and the outlet 114, a communication path 116 is formed, and a plurality of branch paths 118 are formed at regular intervals in the communication path 116, and the hose H1 ~ H7) is connected, and the plurality of branch paths 118 have a structure in which pistons (P1 ~ P7) that move forward and backward by pneumatic cylinders (C1 ~ C7) are installed, respectively. and flow metering devices.
3. The method according to claim 2,
The plurality of water tanks (B1 to B7) are mounted on the water tank holder 200, and the water tank holder 200 includes a frame 210 and a plurality of cylinders 220 installed on the frame 210. ), a slider 230 provided with a mounting hook 232 for mounting the water tanks B1 to B7 at the lower end of the plurality of cylinders 220 to be elevated, respectively, and the slider 230 ) and a support plate 240 that is fixed to and elevates along the inside of the cylinder 220, and an upper end or a lower end in contact with the support plate 240 and a lower end or upper end in contact with the lower portion of the cylinder 220 (250) and a limit switch 260 installed on the lower side of the cylinder 220 and contacting the support plate 240 by the lowering of the slider 230, and after starting the pumping of the submersible pump 70 As the sewage sample is filled in the first water tank B1 by the sequential opening of the manifold valve 100, and as the weight of the first water tank B1 increases, the slider 230 is lowered and the support plate 240 is When the set time elapses after the pumping operation of the submersible pump 70 is stopped by contacting the limit switch 260 and the limit switch 260 is turned off, the operation of the submersible pump 70 starts again and the manifold valve ( 100) is opened and the operation of filling the second collection tank (B2) with a sewage sample is sequentially repeated.
The method according to claim 1,
The opening/closing plate 30 is forcibly opened with a pneumatic cylinder 34 for water collection during rain so that rainwater can flow into the rainwater chamber 30, and when a predetermined water level is detected by the water level sensor 24, the submersible pump 70 ) and then closed with the pneumatic cylinder 36 to keep the opening/closing plate 30 closed by the flow rate and flow rate of rainwater.
The method according to claim 1,
The flow meter 60 is installed to be movable along the rail 62 installed along the longitudinal direction of the sewage pipe 10 so that the location of the flow meter 60 corresponds to the full width W of the sewage pipe 10 . or set in the upper position of the sewage induction barrier 50 to detect the water level and flow rate in the width w of the sewage induction barrier 50 so that the water level is higher than the height of the sewage induction barrier 50 In case of calculating the flow rate, it is automatically converted to the width (W) of the sewage pipe line (10) to measure the flow rate.

Images