CN107121177B - Standard device integrating open channel and pipeline sewage flow - Google Patents
Standard device integrating open channel and pipeline sewage flow Download PDFInfo
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- CN107121177B CN107121177B CN201710469984.1A CN201710469984A CN107121177B CN 107121177 B CN107121177 B CN 107121177B CN 201710469984 A CN201710469984 A CN 201710469984A CN 107121177 B CN107121177 B CN 107121177B
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- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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Abstract
The integrated standard device for the sewage flow of the open channel and the pipeline comprises a water flow regulating and controlling system, an open channel detection section, a pipeline detection section, an inverted U-shaped pipe and a backflow channel. The water flow regulating and controlling system is respectively connected with the head ends of an open channel detection section and a pipeline detection section for installing the standard flowmeter and the detected flowmeter; the tail end of the open channel detection section is arranged above the inlet of the return channel, and the return channel is connected with the water flow regulation and control system; the inverted U-shaped pipe is an inverted U-shaped water pipe with two openings at two ends, one end of the inlet of the inverted U-shaped pipe is connected with the pipeline detection section, and the other end of the outlet of the inverted U-shaped pipe is connected into the backflow channel. The invention is used as a standard device for the magnitude transmission of the integrated sewage flow of the open channel and the pipeline, and has the advantages of saving the construction space, saving the manufacturing cost, remarkably improving the utilization efficiency and the like. The invention belongs to the technical field of fluid flowmeter detection.
Description
Technical Field
The invention belongs to the technical field of fluid flowmeter detection, and particularly relates to an open channel and pipeline sewage flow integrated standard device.
Background
In order to strengthen the supervision and management of the total amount of water environment pollutants, a flow and water quality monitoring instrument with good performance, stability and reliability needs to be provided. The environment-friendly product sewage flowmeter verification/calibration capability of China is weak, and a complete set of water environment flow monitoring instrument verification/calibration standard device is required to be built so as to meet the technical requirements of environment-friendly products, namely key index detection of an ultrasonic open channel flowmeter (HJ/T15-2007) and an ultrasonic pipeline flowmeter (HJ/T366-2007), so that technical support is provided for the technical requirements and quality assurance/control methods of the flowmeter of China, and verification/calibration equipment meeting the standard requirements is also provided for the quality supervision and management department of the environment-friendly product. Currently, for quality supervision and management of open channel flow meters, an open channel flow meter verification/calibration device is provided; aiming at the quality supervision and management of the pipeline flowmeter, a pipeline flowmeter verification/calibration device is provided. However, when the manufacturer needs to perform the verification/calibration of the open channel flowmeter and the pipeline flowmeter at the same time, two different places or sites may be needed for detection; for the same metering verification mechanism or a third party detection mechanism, the open channel flowmeter verification/calibration device and the pipeline flowmeter verification/calibration device are respectively and simultaneously built, so that the occupied space is large, the cost is large, the manufacturing cost is high, and the utilization efficiency is relatively low.
Disclosure of Invention
Aiming at the problems, the invention provides an open channel and pipeline sewage flow integrated standard device which saves construction space and manufacturing cost and has high utilization efficiency, and the invention also has the advantage of high performance.
The open channel and pipeline sewage flow integrated standard device comprises a water flow regulating and controlling system, an open channel detection section, a pipeline detection section, an inverted U-shaped pipe and a backflow channel; the water flow regulating and controlling system is respectively connected with the head end of the open channel detection section and the pipeline detection section; the tail end of the open channel detection section is arranged above the return channel, and the return channel is connected with the water flow regulation and control system; the inverted U-shaped pipe is an inverted U-shaped water pipe with two openings at two ends, one end of the inverted U-shaped pipe is connected with the tail end of the pipeline detection section, and the other end of the inverted U-shaped pipe is connected into the backflow channel. The open channel detection section and the pipeline detection section are respectively provided with a standard flowmeter and a detected flowmeter. By adopting the structure, the verification/calibration of the open channel flowmeter or the pipeline flowmeter can be realized on the device by switching the water flow direction, namely the device has the flow detection functions of the open channel flowmeter and the pressurized pipeline flowmeter, so that the construction space and the construction cost are saved; the water flow regulating and controlling system and the backflow channel are shared, and the utilization efficiency of the device is obviously improved.
As one preferable, the water flow regulating and controlling system comprises an upper water reservoir, a lower water reservoir, an upper water pipe, a water supply pipe, a lifting pump, a control gate valve A, a control gate valve B, a control gate valve C and an overflow pipe, wherein the upper water pipe is sequentially connected with the lifting pump and the control gate valve A and then connected with the upper water reservoir, the water supply pipe from the upper water reservoir is divided into two branches, one branch is connected with the control gate valve B and then connected with the head end of the open channel detection section, the other branch is connected with the head end of the pipeline detection section after the control gate valve C, and the overflow pipe is connected with the upper water reservoir and the lower water reservoir. By adopting the structure, the flow of the open channel detection section and the flow velocity of the pipeline detection section can be better regulated and controlled respectively, so that the flow detection result is more accurate.
Preferably, the open channel detection section comprises an open channel verification section and an open channel test section which are connected in sequence. By adopting the structure, the open channel check section for providing standard flow value comparison and the open channel test section for installing the detected open channel flowmeter are separated, so that the installation of the detected open channel flowmeter and the measurement of the flow rate are facilitated.
As one preferable mode, the open channel check section comprises a right-angle thin-wall weir, an open channel standard liquid level gauge, a rectangular groove E, a rectifying plate and a glass cylinder stilling well, wherein the glass cylinder stilling well is arranged on the outer wall of the rectangular groove E and is communicated with liquid in the rectangular groove E, the rectifying plate is arranged in front of the glass cylinder stilling well, the open channel standard liquid level gauge is arranged in the glass cylinder stilling well, and the right-angle thin-wall weir is arranged at the joint of the open channel check section and the open channel test section. By adopting the structure, the rectifying plate can achieve the rectifying effect on the incoming flow of the water supply pipe and slow down the instability of the water flow, avoid the influence of factors such as water flow fluctuation and the like, and ensure that the water flow freely flows through the open channel test section provided with the detected open channel flowmeter. Therefore, the standard flow value flowing through the open channel detection section can be measured more accurately.
Preferably, the open channel test section comprises a rectangular groove F, a rectifying plate and an open channel flowmeter to be detected; the detected open channel flowmeter comprises a detected flowmeter sensor, a secondary instrument and a detected flowmeter matched measuring weir groove, wherein the detected open channel flowmeter matched measuring weir groove is arranged at the tail part of the rectangular groove F, and the rectifying plate is arranged in the rectangular groove F and is arranged in front of the detected open channel flowmeter matched measuring weir groove. By adopting the structure, the rectifying plate can achieve the rectifying effect on the incoming flow of the open channel check section and slow down the instability of the water flow, avoid the influence of factors such as water flow fluctuation and the like, and reduce the head loss of the detected open channel flowmeter and the error of a flow measurement system.
As one preferable mode, the pipeline detection section comprises three verification pipelines with conventional pipe diameters, pipeline standard flow meters and detected pipeline flow meters, wherein the three verification pipelines with conventional pipe diameters are arranged in parallel, the pipeline standard flow meters correspond to different pipe diameters, the detected pipeline flow meters comprise detected pipeline flow meter sensors and secondary meters, one end of each verification pipeline is connected with a water supply pipe, the other end of each verification pipeline is connected with an inverted U-shaped pipe, a control gate valve is arranged at the front section of each verification pipeline, the pipeline standard flow meters are arranged behind the control gate valve, and the detected pipeline flow meters are arranged behind the pipeline standard flow meters. By adopting the structure, the three detected pipeline flow meters with different specifications can be respectively measured by opening and closing the control gate valves of the three detected pipelines, so that the detection performance is improved.
Preferably, the sensor of the detected pipeline flowmeter is an external clamp type, and the sensor of the detected pipeline flowmeter is clamped on the outer wall of the pipeline behind the standard pipeline flowmeter. By adopting the structure, the pipe external clamp type sensor is arranged in front of the movable section so as to meet the measurement requirements of the detected pipe flowmeter of different types of sensors.
Preferably, the verification pipeline comprises a movable section and a fixed section, wherein the movable section is arranged behind the pipeline standard flowmeter, and two ends of the movable section are detachably connected with the fixed section; the detected pipeline flowmeter sensor is connected with a pipeline, and the detected pipeline flowmeter sensor is replaced with the movable section in the verification pipeline. By adopting the structure, when the detected pipeline flowmeter sensor is a pipeline access type sensor, the movable section can be detached and then installed into the pipeline fixing section. Thereby meeting the measurement requirements of the detected pipeline flowmeter of different types of sensors.
Preferably, the return channel is a rectangular groove, one end of the rectangular groove is closed, the other end of the rectangular groove is open, the closed end of the return channel is arranged below the tail end of the open channel detection section, and one end of the open end of the return channel is connected with the lower reservoir. By adopting the structure, the water can quickly flow back to the lower reservoir of the water flow regulating and controlling system after being discharged from the open channel detection section or the inverted U-shaped pipe.
The invention has the advantages that:
1. the open channel detection section, the pipeline detection section and the inverted U-shaped pipe are combined to realize integration through the common water flow regulation and control system and the backflow channel, so that the water flow direction can be switched by adjusting the control gate valve on the water supply pipe, and the verification/calibration of the open channel flowmeter or the pressurized pipeline flowmeter can be realized on the device; thereby improving the detection performance of the device and saving the construction space of the device.
2. An open channel detection section consisting of an open channel verification section and an open channel test section is adopted, and a rectifying plate is adopted, so that the flow has rectifying effect on incoming flow and can slow down instability of water flow, and influence of factors such as water flow fluctuation is avoided. The flow measuring system is simple and convenient to install, and can greatly reduce the flow measuring system error of the detected channel flowmeter.
3. The pipeline detection section comprises three parallel verification pipelines which are arranged into common verification pipelines with different pipe diameters and are provided with detachable movable sections. Therefore, by opening and closing the gate valves on the three verification pipelines, the detected pipeline flow meters with three different pipe diameter specifications can be respectively measured, the measurement requirements of the detected pipeline flow meters of the external clamp type sensor and the access type sensor can be met, and the detection function of the device is enhanced. When the pipeline flowmeter is detected, the water flow in each pipe diameter verification pipeline uniformly passes through the pipeline standard flowmeter and the detected flowmeter, so that more accurate and stable measurement results are ensured.
4. The water flow regulating and controlling system adopts a water supply pipe and an overflow pipe which are provided with an upper water reservoir, a lower water reservoir, a water supply pipe and two branches, so that the flow speed and the flow quantity of the circulating water flow of the device can be better regulated, and the accuracy and the stability of flow measurement are improved.
Drawings
Fig. 1 is a schematic structural diagram of an open channel and pipeline sewage flow integrated standard device.
The water flow control system comprises a water flow control system 1, an open channel verification section 2, an open channel test section 3, an open channel detection section 4, a pipeline detection section 5, an inverted U-shaped pipe 6, a backflow channel 7, a pipeline standard flowmeter 8, a detected pipeline flowmeter 9, a movable section 10, a bar-type channel 11, an open channel flowmeter sensor 12, a rectifying plate 13, a right-angle thin-wall weir 14, a standard liquid level meter 15, an upper water tank 16, an upper water pipe 17, an overflow pipe 18, a water supply pipe 19, a control gate valve A20, a lower water tank 21, a lifting pump 22, a control gate valve B23 and a control gate valve C24.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The integrated standard device for the sewage flow of the open channel and the pipeline comprises a water flow regulating and controlling system, an open channel measuring section, a pipeline detecting section, an inverted U-shaped pipe and a backflow channel. The water flow regulating and controlling system is respectively connected with the head end of the open channel detection section and the pipeline detection section; the open channel detection section is arranged above the backflow channel, and outlet water at the tail end of the open channel detection section is freely discharged into the backflow channel, and the backflow channel is connected with the water flow regulation and control system; the inverted U-shaped pipe is an inverted U-shaped water pipe with two openings at two ends, one end of the inverted U-shaped pipe is connected with the pipeline detection section, and the other end of the inverted U-shaped pipe is connected into the backflow channel.
The water flow regulating system (as the part surrounded by the dashed line frame in fig. 1) comprises an upper reservoir, a lower reservoir, an upper water pipe, a water supply pipe, a lifting pump, a control gate valve A, a control gate valve B, a control gate valve C and an overflow pipe, wherein the upper water pipe is sequentially connected with the lifting pump, the control gate valve A and then connected with the upper reservoir, the water supply pipe connected with the upper reservoir is divided into two branches, one branch is connected with the control gate valve B and then connected with the head end of the open channel detection section, the other branch is connected with the head end of the pipeline detection section after the control gate valve C, and the overflow pipe is connected with the upper reservoir and the lower reservoir. The lifting pump is started, water in the lower reservoir is pumped into the upper reservoir through the water supply pipe, and the flow of water flow conveyed into the upper reservoir can be regulated by regulating the control gate valve A. After the water in the upper reservoir is stabilized in pressure, the water is conveyed to the open channel detection section or the pipeline detection section through a water supply pipe, and the control gate valve B and the control gate valve C are switched, so that the branch of the water flowing into the open channel detection section or the pipeline detection section is switched.
The open channel detection section comprises an open channel verification section and an open channel test section which are sequentially connected. The open channel check section comprises a right-angle thin-wall weir, an open channel standard liquid level meter, a rectangular groove E, a rectifying plate and a glass cylinder stilling well, wherein the glass cylinder stilling well is arranged on the outer wall of the rectangular groove E and is communicated with liquid in the rectangular groove E through a communicating pipe, the open channel standard liquid level meter is arranged in the glass cylinder stilling well, the rectifying plate is arranged in front of the glass cylinder stilling well, and the right-angle thin-wall weir is arranged at the joint of the open channel check section and the open channel test section. The open channel test section comprises a rectangular groove F, a rectifying plate and a tested open channel flowmeter. The water weir groove (in this embodiment, a bachelter groove) matched with the detected channel flowmeter is arranged at the tail part of the rectangular groove F, and the rectifying plate is arranged in the rectangular groove F and in front of the water weir groove matched with the detected flowmeter. In this embodiment, the rectangular groove E and the rectangular groove F are connected seamlessly.
The inverted U-shaped pipe is an inverted U-shaped water pipe, two ends of the inverted U-shaped pipe are provided with openings, one end of the inverted U-shaped pipe is connected with the tail end of the pipeline detection section, and the other end of the inverted U-shaped pipe upwards passes through the inverted U-shaped bent pipe part and then downwards extends into the backflow channel; the tail end of the pipeline detection section is a three-way joint, and a pipeline extending downwards is connected into a backflow channel and is provided with a control gate valve D.
In this embodiment, pipeline detection section includes pipeline standard flowmeter, the verification pipeline of three conventional pipe diameters of parallel arrangement and is examined pipeline flowmeter, and is examined pipeline flowmeter and include examining pipeline flowmeter sensor and secondary instrument, all is provided with standard pipeline flowmeter in every examination pipeline, and the head end of examining the pipeline all is equipped with control gate valve, and standard pipeline flowmeter installs after control gate valve, and after examining pipeline flowmeter located standard pipeline flowmeter, examination pipeline one end and delivery pipe connection, the other end and the entry linkage of falling the U-shaped pipe. The three verification pipelines are arranged into different conventional pipe diameters, so that three detected pipeline flow meters with corresponding specifications can be measured. Each verification pipeline comprises a fixed section and a movable section, the movable section is arranged behind the pipeline standard flowmeter, two ends of the movable section are connected with the verification pipeline fixed section through flanges, the movable section can be disassembled and then is provided with a detected pipeline flowmeter access sensor, and the movable section can be preceded by a pipeline external clamping sensor so as to meet the measurement requirements of detected pipeline flowmeters of different types of sensors. The water flow in the water supply pipe flows through the verification pipeline, enters from one end opening of the inverted U-shaped pipe, passes through the bent part of the inverted U-shaped pipe and is discharged into the backflow channel from the other end opening of the inverted U-shaped pipe.
The backflow channel is a rectangular groove, one end of the rectangular groove is closed, the other end of the rectangular groove is open, the closed end of the backflow channel is arranged below the tail end of the open channel detection section, and one end of the backflow channel opening is connected with the lower reservoir. The effluent of the rectangular groove F and the effluent of the inverted U-shaped pipe flow into the backflow channel, and flow into the lower reservoir of the water flow regulating and controlling system through the outlet end of the backflow channel.
In the embodiment, the rectangular groove E and the rectangular groove F are arranged above the backflow channel, and the right-angle thin-wall weir is arranged at the joint of the rectangular groove E and the rectangular groove F. One branch of the water supply pipe of the water flow regulating and controlling system is connected with the head end of the rectangular groove E, and a control gate valve B is arranged on the branch; the other branch of the water supply pipe is communicated with three verification pipelines, and a control gate valve C is arranged on the branch. And the branches of the three verification pipelines of the pipeline detection section and the water supply pipe connected with the verification pipelines are arranged on one side of the rectangular groove.
The working principle and the flow of the invention are as follows: according to the requirements, the detected open channel flowmeter is arranged on the open channel detecting section of the device or the detected pipeline flowmeter is arranged on the pipeline detecting section of the device, a water flow regulating and controlling system is started and regulated, so that water flows through the standard flowmeter and the detected flowmeter in one branch detecting section, the standard flowmeter and the detected flowmeter are synchronously operated, the instantaneous flow values displayed or output by the standard flowmeter and the detected flowmeter are compared, and the flow accuracy and the repeatability of the detected flowmeter can be calculated. And the flow control system is used for adjusting the flow entering the detection section, under the condition that any flow point according to the technical requirement within the measurement range of the device is ensured to be stabilized, the flow data corresponding to the detected flowmeter are respectively measured, and the verification/calibration result of the detected flowmeter is obtained through calculation and analysis.
And the control gate valve B and the control gate valve C of the water flow control system are regulated, so that different water supply branches on the water supply pipe are switched, and the aim of switching different detection branches is fulfilled. For example, the control gate valve B is opened, the control gate valve C is closed, and then water flows into the open channel detection section, namely the open channel flowmeter is detected; and the control gate valve B is turned off, and the control gate valve C is turned on, so that water flows into the pipeline detection section, and the pipeline flowmeter is detected.
In fact, for the pipeline detection section, more than three calibrating pipelines with different pipe diameters can be arranged, and the number of the calibrating pipelines is changed without departing from the essence of the invention, so the invention still belongs to the protection scope of the invention.
The above examples are preferred embodiments of the present invention, but the embodiments of the present invention are not limited to the above examples, and any other changes, modifications, substitutions, combinations, and simplifications that do not depart from the spirit and principle of the present invention should be made in the equivalent manner, and the embodiments are included in the protection scope of the present invention.
Claims (7)
1. Open channel and pipeline sewage flow integration standard device, its characterized in that: the device comprises a water flow regulating and controlling system, an open channel detection section, a pipeline detection section, an inverted U-shaped pipe and a backflow channel; the water flow regulating and controlling system is respectively connected with the head end of the open channel detection section and the pipeline detection section; the tail end of the open channel detection section is arranged above the return channel, and the return channel is connected with the water flow regulation and control system; the inverted U-shaped pipe is an inverted U-shaped water pipe with two open ends, one end of the inverted U-shaped pipe is connected with the tail end of the pipeline detection section, and the other end of the inverted U-shaped pipe is connected into the backflow channel;
the water flow regulating and controlling system comprises an upper reservoir, a lower reservoir, an upper water pipe, a water supply pipe, a lifting pump, a control gate valve A, a control gate valve B, a control gate valve C and an overflow pipe, wherein the upper water pipe is connected with the lifting pump and the control gate valve A in sequence and then connected with the upper reservoir, the water supply pipe connected from the upper reservoir is divided into two branches, one branch is connected with the control gate valve B and then connected with the head end of the open channel detection section, the other branch is connected with the head end of the pipeline detection section and then connected with the control gate valve C, and the overflow pipe is connected with the upper reservoir and the lower reservoir;
the open channel detection section comprises an open channel verification section and an open channel test section which are sequentially connected.
2. The open channel and pipeline sewage flow integrated standard device according to claim 1, wherein: the pipeline detection section comprises three verification pipelines with conventional pipe diameters, pipeline standard flow meters and detected pipeline flow meters, wherein the three verification pipelines with conventional pipe diameters are arranged in parallel, the pipeline standard flow meters correspond to different pipe diameters, the detected pipeline flow meters comprise detected pipeline flow meter sensors and secondary meters, one end of each verification pipeline is connected with a water supply pipe, the other end of each verification pipeline is connected with an inverted U-shaped pipe, a control gate valve is arranged at the front section of each verification pipeline, the pipeline standard flow meters are arranged behind the control gate valve, and the detected pipeline flow meters are arranged behind the pipeline standard flow meters.
3. The open channel and pipeline sewage flow integrated standard device according to claim 2, wherein: the detected pipeline flowmeter sensor is an external clamp type, and is clamped on the outer wall of the pipeline behind the pipeline standard flowmeter.
4. The open channel and pipeline sewage flow integrated standard device according to claim 2, wherein: the verification pipeline comprises a movable section and a fixed section, wherein the movable section is arranged behind the pipeline standard flowmeter, and two ends of the movable section are detachably connected with the fixed section; the detected pipeline flowmeter sensor is connected with a pipeline, and the detected pipeline flowmeter sensor is replaced with the movable section in the verification pipeline.
5. The open channel and pipeline sewage flow integrated standard device according to claim 1, wherein: the backflow channel is a rectangular groove, one end of the rectangular groove is closed, the other end of the rectangular groove is open, the closed end of the backflow channel is arranged below the tail end of the open channel detection section, and one end of the backflow channel opening is connected with a lower reservoir of the water flow regulating and controlling system.
6. The open channel and pipeline sewage flow integrated standard device according to claim 1, wherein: the open channel check section comprises a right-angle thin-wall weir, an open channel standard liquid level meter, a rectangular groove E, a rectifying plate and a glass cylinder stilling well, wherein the glass cylinder stilling well is arranged on the outer wall of the rectangular groove E and is communicated with liquid in the rectangular groove E, the rectifying plate is arranged in front of the glass cylinder stilling well, the open channel standard liquid level meter is arranged in the glass cylinder stilling well, and the right-angle thin-wall weir is arranged at the joint of the open channel check section and the open channel test section.
7. The open channel and pipeline sewage flow integrated standard device according to claim 1, wherein: the open channel test section comprises a rectangular groove F, a rectifying plate and a tested open channel flowmeter; the detected open channel flowmeter comprises a detected flowmeter sensor, a secondary instrument and a detected flowmeter matched measuring weir groove, wherein the detected open channel flowmeter matched measuring weir groove is arranged at the tail part of the rectangular groove F, and the rectifying plate is arranged in the rectangular groove F and is arranged in front of the detected open channel flowmeter matched measuring weir groove.
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| CN201710469984.1A CN107121177B (en) | 2017-06-20 | 2017-06-20 | Standard device integrating open channel and pipeline sewage flow |
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| CN201710469984.1A CN107121177B (en) | 2017-06-20 | 2017-06-20 | Standard device integrating open channel and pipeline sewage flow |
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| CN109029646A (en) * | 2018-08-17 | 2018-12-18 | 浙江清环智慧科技有限公司 | Open-channel meter accuracy detecting device |
| CN108955838B (en) * | 2018-08-17 | 2021-03-02 | 浙江清环智慧科技有限公司 | Non-full pipe flow calibrating device |
| CN114076619A (en) * | 2021-11-15 | 2022-02-22 | 中水珠江规划勘测设计有限公司 | Energy dissipation and flow measurement system for water supply pipeline |
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| EP0681683B1 (en) * | 1993-01-25 | 1996-07-10 | Christian KÖLLING | Method and device for measuring the discharge in partly filled or completely filled ducts and in open channels |
| US5852240A (en) * | 1995-06-01 | 1998-12-22 | Leblanc; David P. | Portable flow measuring device |
| US6629447B1 (en) * | 2001-10-17 | 2003-10-07 | Louis Charles Collins | Machine and process for the calibration and proving of flow sensors |
| CN201787986U (en) * | 2010-05-31 | 2011-04-06 | 赵静艺 | Water flow measuring device of gas-water multiphase-flow water delivery system |
| CN103234604A (en) * | 2013-04-01 | 2013-08-07 | 中国计量学院 | Calibrating device for weir trough open channel flow meter |
| CN204177452U (en) * | 2014-10-08 | 2015-02-25 | 广州能源检测研究院 | A kind of meter proof platform meeting different physical dimension flowmeter |
| CN105673076A (en) * | 2014-11-22 | 2016-06-15 | 西安奥赛福科技有限公司 | Hydrological real-time monitoring system |
| CN204833838U (en) * | 2015-08-11 | 2015-12-02 | 武汉大学 | Comprehensive design nature hydraulics experiment platform |
| CN105806453A (en) * | 2016-04-11 | 2016-07-27 | 武汉市计量测试检定（研究）所 | Liquid flow metering device |
| CN206919988U (en) * | 2017-06-20 | 2018-01-23 | 环境保护部华南环境科学研究所 | Open channel and conduit wastewater flow integral standard device |
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