Verification and calibration device for open channel sewage flow meter

Abstract

The utility model discloses a verification and calibration device for an open channel sewage flow meter, which relates to the technical field of flow meters and comprises a lower reservoir, an upper reservoir arranged at the top of the lower reservoir, and a water flow regulation and control component arranged between the upper reservoir and the lower reservoir; the L-shaped backflow channel is mounted at the top of one end of the lower reservoir; the open channel verification section is installed on one side of the top of the L-shaped backflow channel, and a standard flow meter is installed in the open channel verification section; according to the utility model, the water circulation and flow control between the lower reservoir and the upper reservoir are realized, the water level is monitored in real time, different water levels and flows can be stably adjusted, the actual working condition is accurately simulated, and the test efficiency is improved. The two key indexes of the water level and the flow of the detected flowmeter are detected at the same time, comprehensive evaluation of the performance of the flowmeter is achieved, and the defect that part of existing devices are single in detection index is overcome.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, and in particular to a calibration and verification device for open channel sewage flow meters. Background Technology

[0002] An open channel wastewater flow meter is an instrument specifically designed to measure the flow rate of wastewater in an open channel (a channel with free surface water flow). It plays a crucial role in wastewater treatment, industrial drainage, municipal engineering, and other fields. The accuracy of its measurement is essential for production process control, wastewater discharge monitoring, and environmental protection.

[0003] Currently, in practical use, due to various factors such as unstable water flow, changes in water quality, and equipment aging, the measurement accuracy of open channel sewage flow meters may deviate, thus requiring regular verification and calibration. However, existing verification and calibration devices for open channel sewage flow meters have some shortcomings: some devices struggle to stably adjust different water levels and flow rates, making it impossible to accurately simulate actual working conditions and affecting the accuracy of the verification and calibration results; others cannot simultaneously detect both the water level and flow rate of the flow meter under test, making it impossible to comprehensively evaluate the flow meter's performance. Therefore, there is an urgent need to design a verification and calibration device for open channel sewage flow meters to solve these problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a calibration and verification device for open channel sewage flow meters. Its advantages lie in accurately simulating actual working conditions and simultaneously detecting two key indicators of the flow meter under test: water level and flow rate. This enables a comprehensive evaluation of the flow meter's performance and overcomes the deficiency of some existing devices that only detect a single indicator.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A calibration and verification device for open channel sewage flow meters, comprising:

[0007] The lower reservoir has an upper reservoir on top of it, and a water flow control component is installed between the upper and lower reservoirs.

[0008] An L-shaped return channel is installed at the top of one end of the lower reservoir;

[0009] An open channel calibration section is installed on the top side of the L-shaped return channel, and a standard flow meter is installed inside the open channel calibration section;

[0010] An open channel test section is installed between one end of the open channel verification section and the top end of the L-shaped return channel, and the flow meter to be tested is installed inside the open channel test section;

[0011] A slope adjustment assembly is installed on the open channel verification section and the open channel test section;

[0012] A flow stabilization component is installed at the connection between the open channel verification section and the open channel test section;

[0013] A filter assembly is installed at one end of the top of the lower water storage tank.

[0014] The above technical solution can simultaneously detect two key indicators of the flow meter under test: water level and flow rate, thus achieving a comprehensive evaluation of the flow meter's performance and overcoming the shortcomings of some existing devices that only detect one indicator.

[0015] The present invention is further configured such that a second support frame is installed at the top of the lower water storage tank and the bottom of the upper water storage tank, a first support frame is installed at the bottom of the L-shaped return channel and one end of the lower water storage tank, and a liquid level sensor is fixedly installed in both the lower water storage tank and the upper water storage tank.

[0016] The above technical solutions enable real-time monitoring of water levels, stable adjustment of different water levels and flow rates, accurate simulation of actual working conditions, and effective assurance of the accuracy of calibration results.

[0017] The present invention is further configured such that the top of one end of the lower reservoir, the end of the L-shaped return channel near the lower reservoir, both ends of the open channel test section, the end of the open channel verification section near the open channel test section, and the end of the L-shaped return channel near the corner are all designed to be open.

[0018] The above technical solutions facilitate water circulation.

[0019] The present invention is further configured such that the water flow control component includes a lift pump installed on the lower reservoir, and a water inlet pipe inserted into the lower reservoir is installed at the inlet end of the lift pump, a water inlet pipe is installed at the outlet end of the lift pump, and a first valve is installed on the water inlet pipe. The top end of the water inlet pipe extends into the interior of the upper reservoir, and a water supply pipe connected to the open channel test section is fixed at the bottom of one end of the upper reservoir, and a second valve is installed on the water supply pipe.

[0020] The above technical solutions enable water circulation and flow control between the lower and upper reservoirs.

[0021] The present invention is further configured such that the slope adjustment component includes a movable plate rotatably connected to the inner wall of the bottom of the open channel verification section and the open channel test section, and a portal frame is fixed to the top of both the open channel verification section and the open channel test section. An electric push rod is installed on the top of each portal frame. A U-shaped seat is installed on the piston end of the electric push rod and one side of the top of the movable plate. A rotating seat is rotatably connected to the inner wall of each of the two U-shaped seats, and multiple hanging ropes are fixedly installed between the two rotating seats. Guide holes are opened at both ends of the top of the portal frame, and a guide post passing through the guide hole is fixed to the top of one of the U-shaped seats.

[0022] The above technical solutions enable flexible adjustment of the slope of the open channel verification section and the open channel test section, further enriching the simulation capability for different working conditions and meeting diverse verification and calibration needs.

[0023] The present invention is further configured such that the flow stabilization component includes an installation plate installed at the top of the connection between the open channel verification section and the open channel test section, and the bottom of the installation plate is fixed with guide plates distributed at equal intervals.

[0024] The above technical solutions guide and rectify the water flow, reduce turbulence and fluctuations, provide stable water flow conditions for the flow meter, and improve the reliability of verification and calibration.

[0025] The present invention is further configured such that the filter assembly includes a top cover installed at one end of the top of the lower water storage tank, and a handle is fixed to the top of the top cover, and a filter cover inserted into the lower water storage tank is fixed to the bottom of the top cover. The filter cover seals the opening of the L-shaped return channel, and multiple filter ports are provided on the filter cover, and filter screens are installed on the inner wall of each filter port.

[0026] The above technical solutions prevent impurities from entering the circulation system and affecting the calibration of the flow meter, while also protecting other internal components and extending the device's service life.

[0027] The present invention is further configured to include a control system, wherein the control system is electrically connected to the booster pump, the first valve, the second valve, the standard flow meter, the flow meter under test, the liquid level sensor, and the electric push rod.

[0028] The above technical solutions enable real-time monitoring of liquid levels and coordination of the operation of various components, achieving automated verification and calibration.

[0029] The beneficial effects of this utility model are as follows:

[0030] 1. This utility model, through the booster pump, water intake pipe, water supply pipe and corresponding valves in the water flow control component, can realize the water flow circulation and flow control between the lower and upper water storage tanks. Combined with the real-time monitoring of water level by the liquid level sensor, it can stably adjust different water levels and flow rates, accurately simulate actual working conditions, effectively ensure the accuracy of verification and calibration results, and solve the problem that some existing devices are difficult to stably adjust working conditions.

[0031] 2. This utility model installs a standard flow meter in the calibration section of the open channel and a flow meter under test in the test section of the open channel. The control system is electrically connected to both of them. It can simultaneously detect two key indicators of the flow meter under test: water level and flow rate, so as to achieve a comprehensive evaluation of the flow meter performance and make up for the shortcomings of some existing devices that only detect one indicator.

[0032] 3. In this utility model, the electric push rod in the slope adjustment component can drive the movable plate to rotate through the suspension rope, rotating seat and other structures, so as to realize the flexible adjustment of the slope of the open channel calibration section and the open channel test section. This further enriches the simulation capability for different working conditions, meets the diverse verification and calibration needs, and by setting the flow stabilization component guide plate, the water flow can be guided and rectified at the connection between the open channel calibration section and the open channel test section, reducing the turbulence and fluctuation of the water flow, providing stable water flow conditions for the flow meter, and improving the reliability of verification and calibration.

[0033] 4. This utility model can filter the water flowing back to the lower storage tank through the filter cover and filter screen of the filter component, intercept impurities, prevent impurities from entering the circulation system and affecting the calibration of the flow meter, and also protect other components inside the device and extend the service life of the device. Attached Figure Description

[0034] Figure 1 This is a perspective view of a calibration and verification device for an open channel sewage flow meter proposed in this utility model;

[0035] Figure 2 This is a front sectional view of a calibration and verification device for an open channel sewage flow meter proposed in this utility model;

[0036] Figure 3 This is a schematic diagram of the slope adjustment component of a calibration device for open channel sewage flow meters proposed in this utility model;

[0037] Figure 4 This is a schematic diagram of the flow stabilization component structure of a calibration and verification device for open channel sewage flow meters proposed in this utility model;

[0038] Figure 5 This is a schematic diagram of the filter assembly structure of a calibration device for an open channel sewage flow meter proposed in this utility model.

[0039] In the diagram: 1. Lower reservoir; 2. Flow control assembly; 21. Booster pump; 22. Pumping pipe; 23. Inlet pipe; 24. First valve; 25. Supply pipe; 26. Second valve; 3. Second support frame; 4. Upper reservoir; 5. Open channel calibration section; 6. Open channel test section; 7. Slope adjustment assembly; 71. Movable plate; 72. U-shaped seat; 73. Rotating seat; 74. Suspension rope; 75. Portal frame; 76. Guide hole; 77. Electric push rod; 78. Guide column; 8. L-shaped return channel; 9. First support frame; 10. Filter assembly; 101. Top cover; 102. Handle frame; 103. Filter cover; 104. Filter screen; 11. Standard flow meter; 12. Flow stabilization assembly; 121. Mounting plate; 122. Flow guide plate; 13. Flow meter under test; 14. Liquid level sensor. Detailed Implementation

[0040] The technical solution of this utility model will be further described in detail below with reference to specific embodiments.

[0041] Reference Figures 1-5 This utility model provides a calibration and verification device for open channel sewage flow meters, comprising:

[0042] The lower reservoir 1 has an upper reservoir 4 on top, and a water flow control component 2 is installed between the upper reservoir 4 and the lower reservoir 1. The water flow control component 2 includes a lift pump 21 installed on the lower reservoir 1, and a pumping pipe 22 inserted into the lower reservoir 1 is installed at the inlet end of the lift pump 21. An inlet pipe 23 is installed at the outlet end of the lift pump 21, and a first valve 24 is installed on the inlet pipe 23. The top end of the inlet pipe 23 extends into the interior of the upper reservoir 4. A water supply pipe 25 connected to the open channel test section 5 is fixed at the bottom of one end of the upper reservoir 4, and a second valve 26 is installed on the water supply pipe 25. Through the lift pump 21, pumping pipe 22, inlet pipe 23 and corresponding valves in the water flow control component 2, the water circulation and flow control between the lower reservoir 1 and the upper reservoir 4 can be realized, which solves the problem that some existing devices are difficult to stably adjust the working conditions.

[0043] The L-shaped return channel 8 is installed at the top of one end of the lower water storage tank 1;

[0044] The open channel verification section 5 is installed on the top side of the L-shaped return channel 8, and a standard flow meter 11 is installed inside the open channel verification section 5.

[0045] The open channel test section 6 is installed between one end of the open channel verification section 5 and the top end of the L-shaped return channel 8. The flow meter 13 to be tested is installed inside the open channel test section 6. The top end of the lower reservoir 1, the end of the L-shaped return channel 8 near the lower reservoir 1, both ends of the open channel test section 6, the end of the open channel verification section 5 near the open channel test section 6, and the end of the L-shaped return channel 8 near the corner are all designed to be open.

[0046] A slope adjustment component 7 is installed on the open channel verification section 5 and the open channel test section 6. The slope adjustment component 7 includes a movable plate 71 rotatably connected to the inner wall of the bottom of the open channel verification section 5 and the open channel test section 6. A portal frame 75 is fixed to the top of both the open channel verification section 5 and the open channel test section 6. An electric push rod 77 is installed on the top of each portal frame 75. A U-shaped seat 72 is installed on the piston end of the electric push rod 77 and one side of the top of the movable plate 71. A rotating seat 73 is rotatably connected to the inner wall of each of the two U-shaped seats 72. Multiple suspension ropes 74 are fixedly installed between the two rotating seats 73. Guide holes 76 are opened at both ends of the top of the gantry frame 75, and a guide post 78 passing through the guide hole 76 is fixed on the top of one of the U-shaped seats 72. Through the electric push rod 77 in the slope adjustment component 7, the movable plate 71 can be driven to rotate via the suspension ropes 74, rotating seats 73 and other structures, so as to realize the flexible adjustment of the slope of the open channel verification section 5 and the open channel test section 6, further enriching the simulation capability of different working conditions and meeting diverse verification and calibration needs.

[0047] The flow stabilization component 12 is installed at the connection between the open channel calibration section 5 and the open channel test section 6. The flow stabilization component 12 includes a mounting plate 121 installed at the top of the connection between the open channel calibration section 5 and the open channel test section 6, and the bottom of the mounting plate 121 is fixed with equally spaced guide plates 122. The guide plates 122 of the flow stabilization component 12 can guide and rectify the water flow at the connection between the open channel calibration section 5 and the open channel test section 6, reduce the turbulence and fluctuation of the water flow, provide stable water flow conditions for the flow meter, and improve the reliability of the verification and calibration.

[0048] The filter assembly 10 is installed at the top end of the lower water storage tank 1. The filter assembly 10 includes a top cover 101 installed at the top end of the lower water storage tank 1, and a handle 102 is fixed to the top of the top cover 101. A filter cover 103 inserted into the lower water storage tank 1 is fixed to the bottom of the top cover 101. The filter cover 103 seals the opening of the L-shaped return channel 8, and multiple filter ports are opened on the filter cover 103. The inner wall of each filter port is equipped with a filter screen 104. The water flowing back to the lower water storage tank 1 can be filtered through the filter cover 103 and the filter screen 104 of the filter assembly 10, intercepting impurities and preventing impurities from entering the circulation system and affecting the calibration of the flow meter. At the same time, it also protects other components inside the device and extends the service life of the device.

[0049] In order to monitor water levels in real time, refer to Figure 2A second support frame 3 is installed at the top of the lower reservoir 1 and the bottom of the upper reservoir 4. A first support frame 9 is installed at the bottom of the L-shaped return channel 8 and one end of the lower reservoir 1. A liquid level sensor 14 is fixedly installed in both the lower reservoir 1 and the upper reservoir 4. By combining the liquid level sensor 14 with real-time monitoring of the water level, different water levels and flow rates can be stably adjusted, accurately simulating actual working conditions and effectively ensuring the accuracy of the verification and calibration results.

[0050] In order to coordinate the operation of various components, refer to Figure 2 It also includes a control system, which is electrically connected to the booster pump 21, the first valve 24, the second valve 26, the standard flow meter 11, the flow meter under test 13, the liquid level sensor 14, and the electric push rod 77. The control system monitors the liquid level in real time and coordinates the operation of each component to achieve automated verification and calibration.

[0051] Working principle: Water in the lower reservoir 1 is drawn by the booster pump 21 of the water flow control component 2 through the pumping pipe 22 and transported to the upper reservoir 4 through the water supply pipe 23. The first valve 24 on the water supply pipe 23 can control the water flow rate, so that the water in the upper reservoir 4 flows into the open channel test section 5 through the water supply pipe 25. The second valve 26 on the water supply pipe 25 can adjust the water supply flow rate. The standard flow meter 11 in the open channel test section 5 and the tested flow meter 13 in the open channel test section 6 synchronously detect the water flow data. The water flows back to the lower reservoir 1 through the L-shaped return channel 8, forming a cycle.

[0052] In the slope adjustment component 7, the movable plate 71 is driven to rotate by the electric push rod 77 to change the slope of the open channel calibration section 5 and the open channel test section 6 to simulate different working conditions. Meanwhile, the guide plate 122 of the flow stabilization component 12 straightens the flow at the connection between the open channel calibration section 5 and the open channel test section 6 to ensure stable water flow. Finally, the filter cover 103 and filter screen 104 of the filter component 10 filter the impurities in the return water to prevent them from affecting the test. The control system is electrically connected to the lift pump 21, the first valve 24, the second valve 26, the standard flow meter 11, the flow meter under test 13, the liquid level sensor 14, and the electric push rod 77 to monitor the liquid level in real time and coordinate the operation of each component to achieve automated verification and calibration.

[0053] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An open channel sewage flowmeter verification calibration device, characterised in that, include: The lower reservoir (1) has an upper reservoir (4) on top of it, and a water flow control component (2) is provided between the upper reservoir (4) and the lower reservoir (1). L-shaped return channel (8) is installed at the top of one end of the lower reservoir (1); The open channel test section (5) is installed on the top side of the L-shaped return channel (8), and a standard flow meter (11) is installed inside the open channel test section (5). The open channel test section (6) is installed between one end of the open channel verification section (5) and the top end of the L-shaped return channel (8), and the flow meter under test (13) is installed inside the open channel test section (6). A slope adjustment component (7) is installed on the open channel verification section (5) and the open channel test section (6); A flow stabilization component (12) is installed at the connection between the open channel verification section (5) and the open channel test section (6); A filter assembly (10) is installed at the top end of the lower reservoir (1).

2. A device for the verification and calibration of open channel sewage flow meters according to claim 1, characterised in that, The top of the lower reservoir (1) and the bottom of the upper reservoir (4) are equipped with a second support frame (3), the bottom of the L-shaped return channel (8) and one end of the lower reservoir (1) are equipped with a first support frame (9), and a liquid level sensor (14) is fixedly installed in both the lower reservoir (1) and the upper reservoir (4).

3. A device for the verification and calibration of open channel sewage flow meters according to claim 2, characterised in that, The top of one end of the lower reservoir (1), the end of the L-shaped return channel (8) near the lower reservoir (1), both ends of the open channel test section (6), the end of the open channel verification section (5) near the open channel test section (6), and the end of the L-shaped return channel (8) near the corner are all designed to be open.

4. A device for the verification and calibration of open channel sewage flow meters according to claim 3, characterised in that, The water flow control component (2) includes a lift pump (21) installed on the lower reservoir (1), and a water inlet pipe (22) inserted into the lower reservoir (1) is installed at the water inlet end of the lift pump (21). A water inlet pipe (23) is installed at the water outlet end of the lift pump (21), and a first valve (24) is installed on the water inlet pipe (23). The top end of the water inlet pipe (23) extends into the interior of the upper reservoir (4). A water supply pipe (25) connected to the open channel test section (5) is fixed at the bottom of one end of the upper reservoir (4), and a second valve (26) is installed on the water supply pipe (25).

5. A device for the verification and calibration of open channel sewage flow meters according to claim 4, characterised in that, The slope adjustment assembly (7) includes a movable plate (71) rotatably connected to the inner wall of the bottom of the open channel verification section (5) and the open channel test section (6). A gantry frame (75) is fixed to the top of both the open channel verification section (5) and the open channel test section (6). An electric push rod (77) is installed on the top of each gantry frame (75). A U-shaped seat (72) is installed on the piston end of the electric push rod (77) and one side of the top of the movable plate (71). A rotating seat (73) is rotatably connected to the inner wall of each of the two U-shaped seats (72). Multiple hanging ropes (74) are fixedly installed between the two rotating seats (73). Guide holes (76) are opened at both ends of the top of the gantry frame (75). A guide post (78) passing through the guide hole (76) is fixed to the top of one of the U-shaped seats (72).

6. A device for the verification and calibration of open channel sewage flow meters according to claim 1, characterized in that, The flow stabilization component (12) includes a mounting plate (121) installed at the top of the connection between the open channel verification section (5) and the open channel test section (6), and the bottom of the mounting plate (121) is fixed with guide plates (122) distributed at equal intervals.

7. A device for calibrating open channel sewage flow meters as claimed in claim 1, wherein, The filter assembly (10) includes a top cover (101) installed at one end of the top of the lower water storage tank (1), and a handle (102) is fixed on the top of the top cover (101). A filter cover (103) inserted into the lower water storage tank (1) is fixed on the bottom of the top cover (101). The filter cover (103) seals the opening of the L-shaped return channel (8), and multiple filter ports are provided on the filter cover (103). The inner wall of each filter port is equipped with a filter screen (104).

8. A device for the verification and calibration of open channel sewage flow meters according to claim 5, characterized in that, It also includes a control system, which is electrically connected to the booster pump (21), the first valve (24), the second valve (26), the standard flow meter (11), the flow meter under test (13), the level sensor (14), and the electric push rod (77).

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