Flow monitoring device suitable for industrial building outdoor main discharge port

Abstract

The utility model relates to a flow monitoring device suitable for an industrial building outdoor main discharge port, which is structurally characterized in that an ultrasonic flowmeter is mounted on an embedded fixing hook at the top in a flow monitoring inspection well, and a concrete runner is arranged at the bottom in the flow monitoring inspection well. And the control panel is respectively connected with the integrated solar battery pack and the ultrasonic flowmeter. The utility model has the advantages that: 1) the ultrasonic flowmeter is arranged at the upper part in the drainage inspection well with the conventional size, so that the requirement on the underground installation space is lower, and the occupied space can be effectively reduced; (2) the flow monitoring well is simple in structure, simplifies equipment installation procedures, only needs to pre-embed a fixing hook for installing a flow meter during installation, does not need outdoor underground excavation compared with Parshall groove metering, avoids high-cost civil engineering, and is simple to maintain, low in manufacturing cost and suitable for popularization and application; and 3) the integrated solar battery pack is used for supplying power, energy consumption is saved, the working time of equipment can be prolonged when underground maintenance is inconvenient, and dependence on an external power supply is reduced.

Description

Technical Field

[0001] The utility model relates to a flow monitoring device, in particular to a flow monitoring device suitable for an outdoor main outlet of an industrial building, belonging to the technical field of flow detection. Background Art

[0002] In the outdoor drainage project of industrial buildings, the sewage pipe network will collect domestic sewage and industrial wastewater that meets the water quality standards after treatment. Before the sewage is discharged to the municipal sewage pipe network through the outdoor main outlet of the industrial building, in addition to monitoring the sewage quality, it is also necessary to meet the offline measurement requirements of the sewage volume according to the "Water Quality Standard for Sewage Discharged into Urban Sewers" GB / T31962-2015.

[0003] In the existing technical solutions, a Parshall flume is generally set at the outdoor main discharge outlet, and a water measuring weir is installed in the Parshall flume. The water measuring weir is used to reversely calculate the flow rate from the liquid level of the open channel according to the liquid level-flow relationship. That is, the greater the flow rate in the open channel with smooth flow, the higher the liquid level; the smaller the flow rate, the lower the liquid level.

[0004] Monitoring flow through a Parshall cell has the following disadvantages:

[0005] 1) There needs to be a straight section more than 5 times the channel width upstream of the water measuring weir flume so that the water can flow smoothly into the Parshall flume. This requires the flow monitoring well to have a large underground installation space, and the equipment occupies a large area;

[0006] 2) The construction process is relatively complicated and requires the installation of multiple auxiliary equipment, resulting in high installation costs. Regular maintenance work such as dredging and equipment inspection is also required. The flow monitoring well has a complex structure and high requirements for installation accuracy. The coincidence between the center line of the Parshall flume equipment and the center line of the open channel needs to be strictly controlled to avoid water flow deviation.

[0007] 3) The power consumption of traditional Parshall cells mainly comes from sensors, data acquisition units and transmission equipment. They consume a certain amount of electricity during operation and require a dedicated external power supply. They are highly dependent on external power supply to ensure the normal operation of the flow meter. Utility Model Content

[0008] The utility model provides a flow monitoring device suitable for an outdoor main outlet of an industrial building, which aims to overcome the above-mentioned deficiencies in the prior art, reduce occupied space, lower costs, and reduce dependence on an external power source.

[0009] The technical solution of the utility model is a flow monitoring device suitable for the outdoor main outlet of industrial buildings. Its structure includes an ultrasonic flow meter installed on the top of the flow monitoring inspection well. The two sides of the flow monitoring inspection well are connected to the outdoor drainage pipe. The bottom of the flow monitoring inspection well is provided with a concrete flow trough. Installing an ultrasonic flow meter on the upper part of a drainage inspection well of conventional size can effectively reduce the occupied space.

[0010] Preferably, the ultrasonic flowmeter is installed on a pre-buried fixing hook at the top of the flow monitoring inspection well.

[0011] Preferably, a manhole cover and a support are provided on the top of the flow monitoring inspection well, and steps are provided on the side wall of the flow monitoring inspection well inside the manhole cover and the support. When sampling and testing of the main outlet is required, sampling can be performed manually by going down the well through the steps, and the sampling bottle can be sent to a special laboratory near the testing well for testing at the required sampling frequency.

[0012] Preferably, it also includes a vertical pole located outside the flow monitoring inspection, a control panel is installed in the middle of the vertical pole, and an integrated solar cell group is installed on the top, and the control panel is connected to the integrated solar cell group and the ultrasonic flowmeter through signal lines. The ultrasonic pulse emitted by the ultrasonic flowmeter is transmitted to the measured liquid surface through the transmission medium, and then returned to the receiving transducer through the sound transmission medium after reflection, and the time for the ultrasonic pulse to propagate in the sound transmission medium from emission to reception is measured; then according to the speed of the ultrasonic wave in the sound transmission medium, the distance from the transducer to the liquid surface can be calculated, thereby determining the liquid level. The greater the flow rate in the concrete flow trough with smooth flow, the higher the liquid level; the smaller the flow rate, the lower the liquid level, that is, there is a one-to-one correspondence between the flow rate and the water level in the concrete flow trough, and then the measured liquid level data is transmitted to the control panel through the signal line.

[0013] The advantages of the utility model are as follows: 1) The ultrasonic flow meter is installed in the upper part of the drainage inspection well of conventional size, which has relatively low requirements for underground installation space and can effectively reduce the occupied space;

[0014] 2) The flow monitoring well has a simple structure, which simplifies the equipment installation procedure. During installation, only a fixed hook needs to be pre-buried for installing the flow meter. Compared with Parshall flume metering, it does not require outdoor underground excavation, thus avoiding high-cost civil construction. It is simple to maintain, low in cost, and suitable for popularization and use;

[0015] 3) It has a low power consumption design and is powered by an integrated solar cell group, which saves energy. It can maximize the working time of the equipment when it is inconvenient to maintain it underground and reduce dependence on external power sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of a municipal main outlet drainage route.

[0017] Figure 2 The utility model is a structural schematic diagram of a flow monitoring device suitable for an outdoor main outlet of an industrial building.

[0018] Figure 3 yes Figure 2 1-1 cross-sectional view.

[0019] Figure 4 yes Figure 2 2-2 cross-sectional view.

[0020] In the figure, 1 is the terminal inspection well, 2 is the flow monitoring inspection well, 3 is the municipal inspection well, 4 is the outdoor drainage pipe, 5 is the municipal drainage pipe, 6 is the ultrasonic flow meter, 7 is the vertical pole, 8 is the embedded fixing hook, 9 is the step, 10 is the manhole cover and support, 11 is the concrete flow channel, 12 is the signal line (protected by galvanized steel pipe), 13 is the control panel, and 14 is the integrated solar cell group. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with embodiments and specific implementation methods.

[0022] like Figure 1-4 As shown, a flow monitoring device suitable for the outdoor main outlet of an industrial building, the structure of which includes an ultrasonic flowmeter 6 installed on the top of a flow monitoring inspection well 2, the two sides of the flow monitoring inspection well 2 are connected to outdoor drainage pipes 4, and a concrete flow trough 11 is arranged at the bottom of the flow monitoring inspection well 2.

[0023] According to the above structure, when working, Figure 1 As shown, before the sewage 4 is discharged into the municipal pipe network 5 after passing through the terminal inspection well 1, according to the "Water Quality Standard for Sewage Discharge into Urban Sewers" GB / T31962-2015, in addition to monitoring the sewage quality, it is also necessary to meet the flow metering requirements. Therefore, a flow monitoring inspection well 2 is set between the terminal inspection well 1 and the municipal inspection well 3, which is used to analyze the operating water level and flow data to obtain monitoring data, and can distinguish problems such as siltation, overload, overflow, and abnormal water infiltration in the pipeline.

[0024] like Figure 1 , 2 As shown, an ultrasonic flowmeter 6 is set above the flow monitoring inspection well 2. In terms of structural design, it is preferred to adopt an integrated molding process, and the overall packaging molding avoids the risk of water leakage. The flowmeter uses ultrasonic waves to pass through the air and measures in a non-contact method. Therefore, it has higher reliability than other forms of instruments in the case of sticky and corrosive liquids. Since the physical quantity directly measured by the flowmeter is the liquid level, the flow rate is calculated by the liquid level in the concrete flow trough 11, and then the liquid level-flow relationship of the corresponding concrete flow trough 11 is used.

[0025] like Figure 1-3 As shown, the ultrasonic flowmeter 6 is installed on the embedded fixing hook 8 at the top of the flow monitoring inspection well 2. A manhole cover and a support 10 are arranged on the top of the flow monitoring inspection well 2. A step 9 is arranged on the side wall of the flow monitoring inspection well 2 inside the manhole cover and the support 10. It also includes a vertical pole 7 located on the outside of the flow monitoring inspection well 2. A control panel 13 is installed in the middle of the vertical pole 7 and an integrated solar cell group 14 is installed on the top. The control panel 13 is connected to the integrated solar cell group 14 and the ultrasonic flowmeter 6 through a signal line 12 respectively.

[0026] According to the above structure, a pre-embedded fixing hook 8 is pre-buried in advance during the construction phase of the flow monitoring inspection well 2 to fix the ultrasonic flowmeter 6. The ultrasonic pulse emitted by the ultrasonic flowmeter 6 is transmitted to the measured liquid surface through the transmission medium, and then returned to the receiving transducer through the sound transmission medium after reflection, and the time for the ultrasonic pulse to propagate in the sound transmission medium from emission to reception is measured; then according to the speed of the ultrasonic wave in the sound transmission medium, the distance from the transducer to the liquid surface can be calculated, thereby determining the liquid level. The greater the flow rate in the concrete flow trough 11 with smooth flow, the higher the liquid level; the smaller the flow rate, the lower the liquid level, that is, there is a one-to-one correspondence between the flow rate and the water level in the concrete flow trough 11, and then the measured liquid level data is transmitted to the control panel 13 through the signal line 12. The control panel 13 is fixed on the vertical pole 7, and the calculation module inside it converts the liquid level data into real-time flow and cumulative flow, and displays it on the LCD screen. The control panel 13 can preferably reserve a remote transmission interface to transmit the flow data to the monitoring room of the entire plant in real time.

[0027] An integrated solar cell group 14 is installed on the top of the vertical pole 7, and the installation angle of the solar energy is adjusted according to the site orientation to achieve the maximum sunshine intensity and time received by the solar panel; the received solar energy is converted into electrical energy by the solar panel and stored in the battery pack; the battery pack and the external power supply jointly provide power for the ultrasonic flow meter 6 in the well, which can maximize the working time of the equipment and reduce the dependence on the external power supply when it is inconvenient to maintain it underground; the operating parameters of the integrated solar cell group are displayed on the LCD screen of the control panel 13, and the operating status of the solar energy and the battery group is monitored in real time.

[0028] The signal transmission between the control panel 13 and the integrated solar cell group 14 and the ultrasonic flow meter 6 can be realized by the existing technology, and the control method thereof does not belong to the scope of protection of the present utility model.

[0029] When sampling and testing is required for the main outlet, sampling can be done manually by going down the well through step 9, and the sampling bottles can be sent to a special laboratory near the test well for testing at the required sampling frequency.

[0030] In addition to the above-mentioned sewage system, the above device is also applicable to the inspection well of the rainwater flow monitoring facility of the rainwater control and utilization system. The flow monitoring device is set in the inspection well before the municipal interface (or discharge into the river), and is mainly used for rainwater flow monitoring in sponge cities. By monitoring and analyzing the time of the peak flow of rainwater, the effect of the facilities in the sponge city can be judged. The flow monitoring device should have a relatively good measurement accuracy for both full pipe flow and non-full pipe flow conditions, but the water level in the downstream pipeline of the flow monitoring well must be lower than the liquid level in the flow monitoring well to prevent the formation of submerged flow.

[0031] All the components mentioned above are prior art, and those skilled in the art can use any model and existing design that can achieve their corresponding functions.

[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several modifications and improvements without departing from the inventive concept of the present invention, and these modifications and improvements all fall within the protection scope of the present invention.

Claims

1. A flow monitoring device suitable for outdoor main outlet of industrial buildings, characterized in that: The flow monitoring inspection well (2) comprises an ultrasonic flow meter (6) installed at the top thereof. Both sides of the flow monitoring inspection well (2) are connected to outdoor drainage pipes (4). A concrete flow trough (11) is arranged at the bottom thereof.

2. A flow monitoring device suitable for an outdoor main outlet of an industrial building as claimed in claim 1, characterized in that: The ultrasonic flow meter (6) is installed on a pre-buried fixing hook (8) at the top of the flow monitoring inspection well (2).

3. A flow monitoring device suitable for an outdoor main outlet of an industrial building as claimed in claim 1, characterized in that: A manhole cover and a support (10) are provided on the top of the flow monitoring inspection well (2), and a step (9) is provided on the side wall of the flow monitoring inspection well (2) inside the manhole cover and the support (10).

4. A flow monitoring device suitable for an outdoor main outlet of an industrial building as claimed in claim 1, characterized in that: It also includes a vertical pole (7) located outside the flow monitoring inspection well (2), a control panel (13) is installed in the middle of the vertical pole (7), and an integrated solar cell group (14) is installed on the top, and the control panel (13) is respectively connected to the integrated solar cell group (14) and the ultrasonic flow meter (6) through a signal line (12).

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