A mobile platform for cleaning and verifying flow meters

Abstract

The utility model relates to a flowmeter cleaning and checking mobile platform, including stainless steel car body, and the integrated water storage tank, standard flowmeter, weighing water tank, electric control cabinet, electric walking mechanism and brake positioning mechanism on stainless steel car body, the water outlet of water storage tank is connected with water pump through pipeline, and the water outlet of water pump is equipped with the quick -action connector, the output end of measured flowmeter is communicated with the input end of standard flowmeter through the three -way valve, and the output end of standard flowmeter is communicated with the water inlet of weighing water tank, the electric control cabinet is integrated with PLC assembly, touch -sensitive screen, circuit breaker, frequency changer, 24VDC direct current source, inverter and battery pack, and the weighing module of PLC assembly is electrically connected with water pump, standard flowmeter, weighing water tank, electric walking mechanism, brake positioning mechanism, and touch -sensitive screen is connected with PLC assembly communication, the device is convenient to move, and the convenient measurement only needs to fill up water with the water collecting pool, and the inlet and outlet pipeline quick connection is to flowmeter, one -key starts, and the result will show touch -sensitive screen.

Description

Technical Field

[0001] This utility model relates to the field of equipment testing technology, specifically a mobile platform for cleaning and calibrating flow meters. Background Technology

[0002] In cigarette manufacturing, the feeding machine is a crucial piece of equipment on the tobacco-making line, and the flow meter needs to be calibrated regularly to check if its accuracy is within the required range. The usual practice is to use a static scale to weigh the water flowing through the flow meter and compare the two measurements, which is a rather cumbersome process.

[0003] Therefore, it is necessary to effectively improve the efficiency of on-site testing of E+H mass flow meters, ensure testing accuracy, avoid human error, and achieve offline high-precision and rapid comparison of E+H flow meters. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mobile platform for cleaning and calibrating flow meters, enabling offline, high-precision, and rapid comparison of E+H flow meters. It also involves modifying the E+H flow meter equipment in the silk-making workshop and creating a mobile flow meter testing platform.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mobile platform for cleaning and calibrating flow meters, comprising a stainless steel body, and an integrated water tank, a standard flow meter, a weighing water tank, an electrical control cabinet, an electric walking mechanism, and a brake positioning mechanism; the outlet of the water tank is connected to a water pump via a pipeline, and the outlet of the water pump is provided with a quick connector that can be connected to the input end of the flow meter being measured; the output end of the flow meter being measured is connected to the input end of the standard flow meter via a three-way valve, and the output end of the standard flow meter is connected to the inlet end of the weighing water tank; the electrical control cabinet integrates a PLC component, a touch screen, a circuit breaker, a frequency converter, a 24VDC power supply, an inverter, and a battery pack; the PLC component is electrically connected to the water pump, the standard flow meter, the weighing module of the weighing water tank, the electric walking mechanism, and the brake positioning mechanism, respectively; the touch screen is communicatively connected to the PLC component.

[0006] As a preferred technical solution, the electrical control cabinet also integrates a residual current circuit breaker, a network cable interface, a socket, and a 220V power interface. The residual current circuit breaker and the circuit breaker work together to form dual circuit safety protection. The network cable interface is used to realize wired communication between the PLC component and the flow meter being measured. The 220V power interface can be connected to external AC power. The inverter is used to realize the conversion between the DC voltage of the battery pack and the 220V AC voltage.

[0007] As a preferred technical solution, the stainless steel vehicle body is also equipped with a tool compartment and an electric drum. The tool compartment is used to store pipe connectors and calibration auxiliary tools, while the electric drum is used to store power supply cables and communication cables.

[0008] As a preferred technical solution, the water storage tank has a volume of 75 liters, the weighing water tank has a volume of 50 liters, the weighing water tank is equipped with a weighing water tank cover, and the bottom of the weighing water tank is also equipped with a water discharge valve and a drain outlet, which can be detachably connected to the external sewage pipe.

[0009] As a preferred technical solution, the battery pack is a 300Ah lithium iron phosphate battery pack, with a battery life of no less than 8 hours. The overall power of the platform is 600W, and the power supply mode supports switching between AC220V external mains power and DC24V battery power.

[0010] As a preferred technical solution, the electric walking mechanism is an electric walking wheel, and the braking and positioning mechanism is a brake that is matched with the electric walking wheel. Both the electric walking mechanism and the braking and positioning mechanism are controlled by a PLC component to start and stop.

[0011] As a preferred technical solution, the water storage tank is also connected to a cleaning pipeline. The cleaning pipeline is equipped with a flow control valve, which is electrically connected to the PLC component. The output end of the cleaning pipeline is equipped with a DN15 cleaning interface. The PLC component can control the flow control valve to achieve constant flow of tap water for cleaning.

[0012] As a preferred technical solution, the touch screen has a built-in data storage module, and the control cabinet is equipped with a USB flash drive interface. The USB flash drive interface is connected to the PLC component for communication. The instantaneous flow rate and cumulative flow rate data detected by the platform can be synchronously stored in the built-in module of the touch screen or an external USB flash drive.

[0013] As a preferred technical solution, the stainless steel vehicle body is also equipped with a 3 kg calibration weight, which is used to periodically calibrate the weighing module of the weighing water tank. The PLC component has a built-in self-test program that can complete the self-calibration of the standard flow meter.

[0014] As a preferred technical solution, the PLC component can achieve wireless communication with the flow meter under test through the wireless AP module, enabling remote control of the flow meter data reading and the start / stop of the feed pump.

[0015] Compared with the prior art, the technical solution of this application has the following advantages: 1. It is easy to move and is powered by electricity.

[0016] 2. Convenient measurement: Simply fill the water tank with water, connect the inlet and outlet pipes to the flow meter, start with one button, and the results will be displayed on the human-machine interface.

[0017] 3. Convenient selection: During measurement, simply select the feeder to be measured, and the information will be matched. Attached Figure Description

[0018] Figure 1 A schematic diagram of the three-dimensional structure of a flowmeter cleaning and calibration mobile platform proposed in this utility model. Figure 1; Figure 2 A schematic diagram of the three-dimensional structure of a flowmeter cleaning and calibration mobile platform proposed in this utility model. Figure 2 ; Figure 3 A schematic diagram of the three-dimensional structure of a flowmeter cleaning and calibration mobile platform proposed in this utility model. Figure 3 ; Figure 4 This is a front view structural diagram of a mobile platform for cleaning and calibrating a flow meter proposed in this utility model; Figure 5 This is a simplified diagram illustrating the working principle of a mobile platform for cleaning and calibrating flow meters proposed in this utility model.

[0019] Figure labeling: 1. Touch screen; 2. Electric drum; 3. Cleaning interface; 4. Tool compartment; 5. Brake; 6. Water tank; 7. 3 kg calibration weight; 8. Battery pack; 9. Weighing water tank; 10. Stainless steel body; 11. Weighing water tank cover; 12. Drain valve; 13. Drain outlet; 14. Electric driving wheel; 15. Push handle; 16. Standard flow meter; 17. Water pump; 18. Inverter waterproof plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 This utility model proposes a mobile platform for cleaning and calibrating flow meters, comprising a stainless steel vehicle body 10, and integrated on the stainless steel vehicle body 10 are a water storage tank 6, a standard flow meter 16, a weighing water tank 9, an electrical control cabinet, an electric walking mechanism, and a brake positioning mechanism. The outlet of the water storage tank 6 is connected to a water pump 17 via a pipeline. The outlet of the water pump 17 is equipped with a quick connector that can be connected to the input end of the flow meter being tested. The output end of the flow meter being tested is connected to the input end of the standard flow meter 16 via a three-way valve. The output end of the standard flow meter 16 is connected to the inlet end of the weighing water tank 9. The electrical control cabinet integrates a PLC component, a touch screen 1, a circuit breaker, a frequency converter, a 24VDC power supply, an inverter, and a battery pack 8. The PLC component is electrically connected to the weighing module of the water pump 17, the standard flow meter 16, the weighing module of the weighing water tank 9, the electric walking mechanism, and the brake positioning mechanism. The touch screen 1 is communicatively connected to the PLC component.

[0022] Preferably, the electrical control cabinet also integrates a residual current circuit breaker (RCCB), a network cable interface, a socket, and a 220V power interface. The RCCB works in conjunction with the circuit breaker to form dual circuit safety protection. The network cable interface is used for wired communication between the PLC component and the flow meter being measured. The 220V power interface allows for external AC power supply. The inverter is used to convert the DC voltage of the battery pack 8 to the 220V AC voltage. An inverter waterproof plate 18 is also installed outside the inverter to protect it and extend its service life.

[0023] Preferably, the stainless steel body 10 is also equipped with a tool compartment 4 and an electric drum 2. The tool compartment 4 is used to store pipe connectors and calibration auxiliary tools, and the electric drum 2 is used to store power supply cables and communication cables.

[0024] Preferred, such as Figure 3 As shown, the water storage tank 6 has a volume of 75 liters, the weighing water tank 9 has a volume of 50 liters, the weighing water tank 9 is equipped with a weighing water tank cover 11, and the bottom of the weighing water tank 9 is also equipped with a water discharge valve 12 and a drain outlet 13. The drain outlet 13 can be detachably connected to the external sewage pipe.

[0025] Preferably, battery pack 8 is a 300Ah lithium iron phosphate battery pack, and the battery pack 8 has a battery life of no less than 8 hours. The overall power of the platform is 600W, and the power supply mode supports switching between AC220V external mains power and DC24V battery power.

[0026] Preferably, the electric walking mechanism is an electric walking wheel 14, and the braking and positioning mechanism is a brake 5 that is matched with the electric walking wheel 14. Both the electric walking mechanism and the braking and positioning mechanism are controlled by a PLC component to start and stop.

[0027] Preferably, the water storage tank 6 is also connected to a cleaning pipeline, which is equipped with a flow control valve. The flow control valve is electrically connected to the PLC component. The output end of the cleaning pipeline is equipped with a DN15 cleaning interface 3. The PLC component can control the flow control valve to achieve constant flow of tap water for cleaning.

[0028] Preferably, the touch screen 1 has a built-in data storage module, and the control cabinet is equipped with a USB flash drive interface. The USB flash drive interface is connected to the PLC component for communication. The instantaneous flow rate and cumulative flow rate data detected by the platform can be synchronously stored in the built-in module of the touch screen 1 or an external USB flash drive.

[0029] Preferably, the stainless steel body 10 is also equipped with a 3 kg calibration weight 7, which is used to periodically calibrate the weighing module of the weighing water tank 9. The PLC component has a built-in self-test program that can complete the self-calibration of the standard flow meter 16.

[0030] Preferably, the PLC component can wirelessly communicate with the flow meter under test via a wireless AP module, enabling remote control of the flow meter data reading and the start / stop of the feed pump.

[0031] Preferably, a push handle 15 is also provided on the stainless steel body for moving the platform.

[0032] like Figure 5 As shown, the working principle of this verification platform includes: A water pump controlled by a frequency converter draws clean water from a tank through a pipeline, connecting the flow meter under test in series to the calibration mobile platform system. The calibration mobile platform reads the instantaneous and cumulative flow rates of the flow meter under test via the network, compares them in real time with the instantaneous and cumulative flow rates of a local standard flow meter, and calculates the indication error. Specific operations include: 1. Flowmeter self-test: When the calibration platform is used for the first time or after a long period of inactivity, according to the requirements of Article 7.1.1 of JJC1038-2008 "Verification Procedure for Coriolis Mass Flow Meters", the mass method calibration standard flow meter 16 should be selected first. To improve efficiency, two or more standard flow meters 16 can be set up. The medium is clean, particle-free water.

[0033] During calibration, first fill the cleaning water tank to 80% capacity. Set the flow rate and running time on touchscreen 1. After starting the water pump for 1 minute, click the "Start Calibration" button. The water pump 17 will automatically stop after the set time. After the water pump 17 stops, the system automatically compares the weight displayed on the electronic scale with the weight displayed on the flow meter. If there is no error, the calibration is complete. The self-test cycle is 1 month or before each use.

[0034] 2. Offline calibration of Coriolis DC flowmeter: 2.1 Move the flow detection platform to the area to be measured in advance, and prepare the connecting cables and pipes. Add an appropriate amount of clean water to the material tank or cleaning water tank.

[0035] 2.2 Power and network connection (wired or wireless AP connection).

[0036] 2.3 Pipeline connection: Select the appropriate flow meter, and open the three-way valves in sequence after connecting the pipeline.

[0037] 2.4 After connecting the standard flow meter 16 in series with the flow meter to be calibrated, make the working medium flow through both the flow meter to be calibrated and the standard flow meter 16 simultaneously according to the flow rate under the actual working conditions on site, so as to ensure that the test pipeline and the flow meter are filled with fluid.

[0038] 2.5 Before calibration, the zero point of the flow meter to be calibrated and the standard flow meter 16 should be adjusted according to the usage requirements. When zeroing, the working medium of the sensor measuring tube should be in a static state.

[0039] 2.6 Turn on the feed pump to bring the flow rate to the actual operating condition. After stabilizing for a period of time (not less than 1 minute), press the start calibration button. The system compares the instantaneous flow rate, cumulative flow rate, and weight of the weighing tank 9 of the standard flow meter 16 and the flow meter being calibrated. The current values ​​are automatically recorded.

[0040] 3. Test data: The testing platform reads the instantaneous and cumulative flow data from the tested flow meter and the standard flow meter 16, and controls the testing process by comparing the data with the start / stop button.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile platform for cleaning and calibrating flow meters, characterized in that, The system includes a stainless steel body, and integrated on the stainless steel body are a water storage tank, a standard flow meter, a weighing water tank, an electrical control cabinet, an electric walking mechanism, and a brake positioning mechanism. The outlet of the water storage tank is connected to a water pump via a pipeline. The outlet of the water pump is equipped with a quick connector that can mate with the input of the flow meter being measured. The output of the flow meter being measured is connected to the input of the standard flow meter via a three-way valve. The output of the standard flow meter is connected to the inlet of the weighing water tank. The electrical control cabinet integrates a PLC component, a touch screen, a circuit breaker, a frequency converter, a 24VDC power supply, an inverter, and a battery pack. The PLC component is electrically connected to the water pump, the standard flow meter, the weighing module of the weighing water tank, the electric walking mechanism, and the brake positioning mechanism, respectively. The touch screen is communicatively connected to the PLC component.

2. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The electrical control cabinet also integrates a residual current circuit breaker, a network cable interface, a socket, and a 220V power interface. The residual current circuit breaker works in conjunction with the circuit breaker to form dual circuit safety protection. The network cable interface is used to realize wired communication between the PLC component and the flow meter under test. The 220V power interface can be connected to external AC power. The inverter is used to realize the conversion between the DC voltage of the battery pack and the 220V AC voltage.

3. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The stainless steel vehicle body is also equipped with a tool compartment and an electric drum. The tool compartment is used to store pipe connectors and calibration auxiliary tools, and the electric drum is used to store power supply cables and communication cables.

4. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The water storage tank has a volume of 75 liters, the weighing water tank has a volume of 50 liters, the weighing water tank is equipped with a weighing water tank cover, and the bottom of the weighing water tank is also equipped with a water discharge valve and a drain outlet, the drain outlet being detachably connected to an external sewage pipe.

5. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The battery pack is a 300Ah lithium iron phosphate battery pack, with a battery life of no less than 8 hours. The overall power of the platform is 600W, and the power supply mode supports switching between AC220V external mains power and DC24V battery power.

6. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The electric walking mechanism is an electric walking wheel, and the brake positioning mechanism is a brake that is matched with the electric walking wheel. Both the electric walking mechanism and the brake positioning mechanism are controlled by the PLC component to start and stop.

7. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The water storage tank is also connected to a cleaning pipeline, which is equipped with a flow control valve. The flow control valve is electrically connected to the PLC component. The output end of the cleaning pipeline is equipped with a DN15 cleaning interface. The PLC component can control the flow control valve to achieve constant flow of tap water for cleaning.

8. The mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The touch screen has a built-in data storage module, and the electrical control cabinet is equipped with a USB flash drive interface. The USB flash drive interface is connected to the PLC component for communication. The instantaneous flow rate and cumulative flow rate data detected by the platform can be synchronously stored in the built-in module of the touch screen or an external USB flash drive.

9. A mobile platform for cleaning and calibrating a flow meter according to claim 1, characterized in that, The stainless steel vehicle body is also equipped with a 3 kg calibration weight, which is used to periodically calibrate the weighing module of the weighing water tank. The PLC component has a built-in self-test program that can complete the self-calibration of the standard flow meter.

10. A mobile platform for cleaning and calibrating a flow meter according to any one of claims 1-9, characterized in that, The PLC component can communicate wirelessly with the flow meter under test through the wireless AP module, enabling remote control of the flow meter data reading and the start / stop of the feed pump.

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