CN211205396U - Device for measuring outlet flow of urban drainage pipeline - Google Patents
Device for measuring outlet flow of urban drainage pipeline Download PDFInfo
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- CN211205396U CN211205396U CN202020103758.9U CN202020103758U CN211205396U CN 211205396 U CN211205396 U CN 211205396U CN 202020103758 U CN202020103758 U CN 202020103758U CN 211205396 U CN211205396 U CN 211205396U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 67
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- 238000005259 measurement Methods 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 12
- 239000007788 liquid Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 3
- 239000002910 solid waste Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Abstract
The utility model discloses a device for measuring the outlet flow of urban drainage pipelines in the technical field of flow measurement, aiming at solving the technical problem that part of detection elements in the prior art are always soaked in water, which causes the service life of the detection device to be obviously shortened; the motor I controls the opening and closing of the valve I, the motor II controls the opening and closing of the valve II, the motor III controls the opening and closing of the valve III, the timer is connected with the valve III, the sensor receives data of the timer and calculates flow, and flow information is output to the display; the display and the buttons are arranged on the shell. The utility model discloses an install flow measuring device on water delivery branch pipe, through the flow direction of valve switching water, avoid measuring device to soak in aqueous for a long time, prolonged measuring device's life.
Description
Technical Field
The utility model belongs to the technical field of flow measurement, concretely relates to a device for urban drainage pipe outlet flow measurement.
Background
The method for measuring the outlet flow of the urban drainage pipeline is not only a technical premise of monitoring the drainage pipeline flow by an environmental protection department, but also a basis of research on urban water environment by scientific researchers. The water flow in the urban drainage pipeline is usually not full of pipes and intermittent, solid wastes, foams and other multiphase substances are often doped in the water flow, and the urban drainage pipeline flow measuring device which does not damage a pipeline body, is convenient to install and disassemble, and is low in cost and high in precision is not available in the domestic market at present.
The current methods for flow measurement of non-full pipe flow mainly include three methods, one is an invasive measurement method, namely, the method is used for measuring the flow by reducing the diameter of a pipe so that the fluid becomes full pipe flow and then using the traditional full pipe flow measurement method; the second method is an electromagnetic flowmeter method, namely measuring the flow velocity by utilizing the electromagnetic induction principle and obtaining the fluid flow by matching with a liquid level measuring device; the third method is a microwave method, namely, a microwave emitter and a microwave receiver which are distributed in a step shape are arranged at the upper end of the pipe wall, the emitter emits microwaves to the liquid level, the microwave receiver receives the microwaves reflected by the liquid level, a microwave signal is converted into a digital signal through a digital-to-analog conversion unit to determine the liquid level height of the fluid, and finally the flow is calculated according to a Manning formula.
The invasive measurement method needs to damage the pipeline body and change the diameter of the pipeline to bring about large head loss, so that the measurement precision is reduced. The electromagnetic flowmeter method needs extra measures such as adding a flashboard in the pipeline to enable the fluid to flow fully, increases the possibility of pipeline blockage due to the fact that water flow in urban drainage pipelines is often mixed with solid wastes such as silt and tree branches, and is complex and expensive in measurement process. The microwave method requires a plurality of microwave transmitters and receivers to work simultaneously, and requires the cooperation of a signal processing unit, a digital-to-analog conversion unit, a control unit and the like, which is expensive. Also, foam, solid waste, etc. that is entrained in the water flow will reduce the measurement accuracy. When a rainstorm event occurs, the water in the pipeline may fill the drain pipe, and the water will submerge part of the electronic components, so that the service life of the measuring device will be obviously shortened.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device for urban drainage pipe outlet flow measurement to solve prior art middle part detecting element and soak in aqueous all the time, lead to the technical problem that detection device's life obviously shortens.
In order to achieve the above purpose, the utility model adopts the technical proposal that: a device for measuring outlet flow of an urban drainage pipeline comprises a water delivery main pipe, a water delivery branch pipe, a first valve, a second valve, a third valve, a first motor, a second motor, a third motor, a timer, a button, a sensor, a display and a control circuit, wherein one end of the water delivery branch pipe is connected with the water delivery main pipe through the second valve, the third valve is installed at the other end of the water delivery branch pipe, the inlet end of the water delivery main pipe is connected with the tail end of a drainage pipeline, and the first valve is installed at the outlet end of the water delivery main pipe; the motor I controls the opening and closing of the valve I, the motor II controls the opening and closing of the valve II, the motor III controls the opening and closing of the valve III, the timer is connected with the valve III, the sensor receives data of the timer and calculates flow, and flow information is output to the display; the display and the button are arranged on a shell, and the shell is arranged on the water delivery branch pipe.
The control circuit comprises a direct-current power supply I, a single chip microcomputer, a fixed-value resistor I, a motor II, a motor III, a sensor, a timer, a direct-current power supply II, a customized resistor II, a switch I, a switch II, a switch III, a switch IV and a switch IV, wherein the single chip microcomputer is connected with the motor I through the switch II, is connected with the motor II through the switch III and is connected with the motor III through the switch IV; the first motor, the second motor and the third motor are all connected to the first switch, the first switch is connected with a first constant value resistor, the first constant value resistor is connected with the negative electrode of the first direct current power supply, and the positive electrode of the first direct current power supply is connected with the single chip microcomputer; the sensor, the timer, the direct current power supply II, the fixed value resistor II and the switch five are connected in series and then connected in parallel to two sides of the motor III.
The button is connected with the first switch.
The type of the single chip microcomputer is as follows: 80c 51.
And the inner walls of the water conveying main pipe and the water conveying branch pipe are coated with hydrophobic materials.
The inlet end of the water conveying main pipe is connected with the tail end of the drainage pipeline through a flange.
And the vertical distance between one end of the water delivery branch pipe and the outer wall of the water delivery main pipe is more than or equal to 10 cm.
Compared with the prior art, the utility model discloses the beneficial effect who reaches:
(1) the utility model installs the flow measuring device on the water delivery branch pipe by arranging the water delivery main pipe and the water delivery branch pipe, and simultaneously changes the flow direction of water by arranging the switching valve, when the flow is required to be measured, the water flows to the measuring device, and when the flow is not required to be measured, the measuring device is isolated, thereby avoiding the measuring device from being soaked in the water for a long time, and prolonging the service life of the measuring device;
(2) the utility model discloses a set up the water delivery main pipe, the export of flange joint drainage pipeline is passed through to the entry end of water delivery main pipe, does not destroy the pipeline body during the device installation, be convenient for installation and dismantlement, precision height and low price.
Drawings
FIG. 1 is a schematic overall structure diagram of a device for measuring flow of an outlet of a municipal drainage pipeline according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a control circuit of a device for measuring outlet flow of a municipal drainage pipeline according to an embodiment of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer", etc. indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for convenience of description of the present invention but do not require the present invention to be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention. As used in the description of the present invention, the terms "front," "back," "left," "right," "up," "down" and "in" refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
As shown in figures 1 and 2, the device for measuring the flow of the urban drainage pipeline outlet comprises a water delivery main pipe 1, a water delivery branch pipe 2, a first valve 3, a second valve 4, a third valve 5, a first motor 6, a second motor 7, a third motor 8, a timer 9, a sensor 10, a button 11, a display 21, a single chip microcomputer 22 and a plurality of wires, wherein the inlet end of the water delivery main pipe 1 is connected with the tail end of a drainage pipeline through a flange, the first valve 3 is installed at the outlet end of the water delivery main pipe 1, the inner diameter of the water delivery branch pipe 2 is d, one end of the water delivery branch pipe 2 is connected with the water delivery main pipe 1 through the second valve 4, the third valve 5 is installed at the other end of the water delivery branch pipe, the volume of the water delivery branch pipe section between the second valve 4 and the third valve 5 is 50L, efficient hydrophobic materials are coated on the inner walls of the water delivery main pipe 1 and the water delivery branch pipe 2 to reduce the friction of the pipe wall to liquid, the first valve 3 is connected with the first motor 6 through the wires, the first motor 6 controls the opening and closing of the first valve 3, the second valve 4 is connected with the second motor 7 through the wires, the second valve 4, the switch of the motor 2 is arranged on the outer wall of the shell, the outer wall of the third valve 2, the motor 5, the switch is arranged at a distance which is larger than the distance from the third valve 5, the motor 5, the distance between the motor 5, the motor.
In the embodiment, the control circuit comprises a first motor 6, a second motor 7, a third motor 8, a timer 9, a sensor 10, a first switch 12, a second switch 13, a third switch 14, a fourth switch 15, a fifth switch 16, a first fixed-value resistor 17, a second fixed-value resistor 18, a first direct-current power supply 19, a second direct-current power supply 20, a singlechip 22 and a plurality of wires, wherein a button 11 is connected with the first switch 12, the second switch 13 is connected with the first motor 6 through a wire, the third switch 14 is connected with the second motor 7 through a wire, the fourth switch 15 is connected with the third motor 8 through a wire, the first direct-current power supply 19, the first fixed-value resistor 17, the first switch 12 and the singlechip 22 are arranged in a circuit trunk, the first fixed-value resistor 17 and the first switch 12 play a role of protecting a circuit, the fifth switch 16 is connected with the third motor 8 through a wire, when the second motor 7 opens the second valve 4, the fifth switch 16 is closed, the timer 9 starts timing, when the water delivery branch pipe is full of water, the timer 9 is short-circuited, the timer 9 stops timing and automatically sets zero after 3s, the second fixed value resistor 18 plays a role of a protection circuit, the sensor 10 is connected with the timer 9 in series, after the timer 9 is short-circuited, the sensor 10 brings the time recorded by the timer 9 into a flow calculation formula at the moment, the flow is calculated, and a result is displayed on the display 21, the single chip microcomputer 22 is used for controlling the on-off of the second switch 13, the third switch 14 and the fourth switch 15, in the embodiment, the type of the single chip microcomputer 22 is as follows: 80c 51.
A method for measuring the flow of the outlet of a city drainage pipeline collects the time required by water flowing out of the drainage pipeline to fill a container with a set volume; and calculating the volume of water injected into the container in unit time as the outlet flow of the drainage pipeline.
Before measurement, the first valve 3 is opened, the second valve 4 is closed, the third valve 5 is opened, and water in the drainage pipeline flows through the water conveying main pipe 1 and is discharged from the outlet end of the water conveying main pipe 1;
during measurement, the button 11 is pressed, the first switch 12 is closed, the circuit is communicated, the fourth switch 15 is closed, the third motor 8 runs, the third valve 5 is closed, the third switch 14 is closed, the second motor 7 runs, the second valve 4 is opened, meanwhile, the timer 9 and the sensor 10 are connected into the circuit, the second switch 13 is closed, the first motor 6 runs, the first valve 3 is closed, when water is filled in the water delivery branch pipe 2, the timer 9 is short-circuited, timing is stopped, the sensor 10 brings the time t of the timer 9 into a flow formula for calculation and transmits a calculation result to the display 21, and the display 21 displays the average flow in the period; and (3) operating a second motor (7), closing a second valve (4), operating a first motor (6), opening a first valve (3), operating a third motor (8), opening a third valve (5), discharging water in the water delivery branch pipe (2), and finishing flow measurement.
The flow calculation formula is as follows:
wherein Q is the outlet flow of the drainage pipeline, namely the average flow in the t period, and the unit is m3S; v is the volume of water body flowing out of the pipeline outlet in the t period and is m3(ii) a t is the time recorded by the timer, and the unit is s;
in the formula, d is the inner diameter of the water delivery branch pipe and the unit is m;
the flow equation can be further simplified as:
the foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (7)
1. A device for measuring outlet flow of an urban drainage pipeline is characterized by comprising a water delivery main pipe, a water delivery branch pipe, a first valve, a second valve, a third valve, a first motor, a second motor, a third motor, a timer, a button, a sensor, a display and a control circuit, wherein one end of the water delivery branch pipe is connected with the water delivery main pipe through the second valve, the third valve is installed at the other end of the water delivery branch pipe, the inlet end of the water delivery main pipe is connected with the tail end of a drainage pipeline, and the outlet end of the water delivery main pipe is provided with the first valve; the motor I controls the opening and closing of the valve I, the motor II controls the opening and closing of the valve II, the motor III controls the opening and closing of the valve III, the timer is connected with the valve III, the sensor receives data of the timer and calculates flow, and flow information is output to the display; the display and the button are arranged on a shell, and the shell is arranged on the water delivery branch pipe.
2. The device for measuring the flow of the urban drainage pipeline outlet according to claim 1, wherein the control circuit comprises a direct-current power supply I, a single chip microcomputer, a fixed-value resistor I, a motor II, a motor III, a sensor, a timer, a direct-current power supply II, a fixed-value resistor II, a switch I, a switch II, a switch III, a switch IV and a switch IV, the single chip microcomputer is connected with the motor I through the switch II, is connected with the motor II through the switch III and is connected with the motor III through the switch IV; the first motor, the second motor and the third motor are all connected to the first switch, the first switch is connected with a first constant value resistor, the first constant value resistor is connected with the negative electrode of the first direct current power supply, and the positive electrode of the first direct current power supply is connected with the single chip microcomputer; the sensor, the timer, the direct current power supply II, the fixed value resistor II and the switch five are connected in series and then connected in parallel to two sides of the motor III.
3. The device for measuring the flow of urban drainage pipeline outlets according to claim 2, wherein the button is connected with the first switch.
4. The device for measuring the flow of the urban drainage pipeline outlet according to claim 2, wherein the single chip microcomputer is of the type: 80c 51.
5. The device as claimed in claim 1, wherein the inner walls of the water main and branch pipes are coated with hydrophobic material.
6. The device for measuring the flow of an outlet of a municipal drainage pipeline according to claim 1, wherein the inlet end of the water main is connected to the end of the drainage pipeline by a flange.
7. The device for measuring the flow of the urban drainage pipeline outlet according to claim 1, wherein the vertical distance between one end of the water delivery branch pipe and the outer wall of the water delivery main pipe is greater than or equal to 10 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103758.9U CN211205396U (en) | 2020-01-17 | 2020-01-17 | Device for measuring outlet flow of urban drainage pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020103758.9U CN211205396U (en) | 2020-01-17 | 2020-01-17 | Device for measuring outlet flow of urban drainage pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211205396U true CN211205396U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020103758.9U Expired - Fee Related CN211205396U (en) | 2020-01-17 | 2020-01-17 | Device for measuring outlet flow of urban drainage pipeline |
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| Country | Link |
|---|---|
| CN (1) | CN211205396U (en) |
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2020
- 2020-01-17 CN CN202020103758.9U patent/CN211205396U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200807 Termination date: 20220117 |
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| CF01 | Termination of patent right due to non-payment of annual fee |