Float level meter calibration device

Abstract

The utility model relates to a float level meter calibration device which comprises a float level meter and a controller, the float level meter comprises a float bowl and a floating ball arranged in the float bowl, a plurality of measuring range scales are evenly arranged on the float bowl in the height direction, and the liquid level position height in the float bowl can be directly read. A root valve for pressure relief is arranged at the bottom of the buoy, a plurality of position-adjustable limiting supports are further arranged on the buoy, and magnetic proximity switches connected with the controller are arranged on the limiting supports. The magnetic proximity switches are uniformly distributed according to measuring range scales on the buoy; the water injection / drainage amount is accurately controlled through the controller, automatic water injection / drainage verification within the range of the floater liquid level meter is achieved through the magnetic proximity switch arranged on the buoy, and the water injection / drainage verification efficiency of the floater liquid level meter is improved.

Description

Technical Field

[0001] This disclosure belongs to the technical field of liquid level gauge calibration devices, and specifically relates to a float liquid level gauge calibration device. Background Technology

[0002] The statements herein provide only background information in relation to this disclosure and do not necessarily constitute prior art.

[0003] A float level gauge is a common industrial automation device that uses the principle of buoyancy to detect the liquid level. Float level gauges are widely used in liquid level measurement in the nuclear island process systems of nuclear power plants. According to the nuclear power plant maintenance program, float level gauges need to be periodically calibrated by filling and draining water. Existing calibration devices use a manual pressure pump or drain valve to manually fill and drain water into the float, with a transparent tube connecting the float to the level gauge. However, when manually controlling the filling or draining of the float level gauge, the water flow rate cannot be precisely controlled, requiring multiple interruptions of filling to check the water level in the float. This is inefficient, time-consuming, and requires constant monitoring of the liquid level in the connecting tube during filling to prevent water from spraying out. Utility Model Content

[0004] The purpose of this disclosure is to provide a float level gauge calibration device that can at least solve one of the above-mentioned technical problems.

[0005] To achieve the above objectives, this disclosure provides a float level gauge calibration device, including a float level gauge and a controller. The float level gauge includes a float and a float ball disposed inside the float. Multiple range scales are evenly arranged on the float along the height direction, allowing direct reading of the liquid level position inside the float. A root valve for pressure relief is provided at the bottom of the float. Multiple position-adjustable limit supports are also provided on the float, and magnetic proximity switches connected to the controller are provided on the limit supports. The magnetic proximity switches are evenly distributed according to the range scales on the float.

[0006] Furthermore, the calibration device also includes a drainage pipe and a water injection pipe, which are connected to the root valve via a tee pipe, and the tee pipe is connected to the root valve via a quick connector.

[0007] Furthermore, the drainage pipeline and the water injection pipeline are respectively equipped with a drainage pump and a water injection pump connected to the controller.

[0008] Furthermore, the drainage pipeline is also equipped with a drainage solenoid valve and a drainage tank, and the drainage pump is located between the drainage solenoid valve and the drainage tank.

[0009] Furthermore, the drain pump is connected to the top of the drain tank via a pipeline.

[0010] Furthermore, a water injection solenoid valve and a water injection tank are also installed on the water injection pipeline, and the water injection pump is installed between the water injection solenoid valve and the water injection tank.

[0011] Furthermore, the water injection pump is connected to the bottom of the water injection tank via a pipeline.

[0012] Furthermore, the quick connector is a tee connector.

[0013] Furthermore, a support is provided on the outside of the float, and a connecting pipe is also provided on the support, which is connected to a quick connector on a tee pipe.

[0014] Furthermore, a regulating valve for the connecting pipe is provided between the connecting pipe and the quick connector.

[0015] The beneficial effects of one or more of the above technical solutions are as follows:

[0016] This disclosure utilizes magnetic proximity switches set according to equal ranges on the float. The signal feedback from the magnetic contact between the magnetic proximity switches on the float and the float ball enables the controller to precisely control the injection / drainage volume, achieving automatic injection / drainage calibration within the float's liquid level metering range, thus improving work efficiency. By separating the injection / drainage pipelines and connecting them with T-junctions, and by cleaning and decontaminating these pipelines, corrosion caused by excessive dosage due to long-term use is reduced, extending the equipment's service life. Furthermore, by installing a regulating valve between the T-junction and the connecting pipe, excessive water flow during injection is prevented from spraying out of the connecting pipe. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0018] Figure 1 This is a schematic diagram of the overall calibration device for the float level gauge in an embodiment of this disclosure.

[0019] In the diagram: 1. Quick connector; 2. Connecting pipe; 3. Connecting pipe regulating valve; 4. Controller; 5. Drain pump; 6. Water injection pump; 7. Drain solenoid valve; 8. Water injection solenoid valve; 9. Power supply; 10. Drain tank; 11. Water injection tank; 12. Magnetic proximity switch; 13. Float; 14. Root valve; 15. Water injection switch; 16. Drain switch; 17. Cleaning switch; 18. Display screen; 19. Adjustment knob; 20. Switch. Detailed Implementation

[0020] like Figure 1As shown, this embodiment provides a float level gauge calibration device, including a float level gauge, a controller 4, a drainage pipe and a water injection pipe.

[0021] The float level gauge includes a float 13 and a float disposed inside the float 13. Multiple range scales are evenly arranged on the float 13 along the height direction. These scales can be divided equally according to the specific height of the float. In this embodiment, the float 13 is divided into five equal parts according to its height. The liquid level position inside the float 13 can be read directly. A root valve 14 for pressure relief is provided at the bottom of the float 13. The drain pipe and the water injection pipe are connected to the root valve through a tee pipe. The tee pipe and the root valve are connected by a quick connector. A tee connector is selected as the quick connector. A drain pump and a water injection pump connected to the controller are respectively provided on the drain pipe and the water injection pipe.

[0022] Specifically, the root valve 14 is connected to the drainage pipe and the water injection pipe through a tee pipe. The tee pipe and the root valve 14 are connected through a quick connector 1. The tee pipe enables independent settings for the drainage pipe and the water injection pipe, thereby effectively avoiding the problem of dosage exceeding the standard due to long-term use of the equipment, extending the service life of the equipment, and ensuring the stability and reliability of the equipment during long-term operation.

[0023] The float 13 is also provided with multiple position-adjustable limit supports. Each limit support is provided with a magnetic proximity switch 12 connected to the controller. The magnetic proximity switches 12 are evenly distributed on the outside of the float 13 along the axial direction of the float according to the equal ranges on the float.

[0024] Specifically, the magnetic proximity switch 12 is connected to the controller 4 via a signal line. The controller 4 controls the operation according to the required liquid level in the float. When the float in the float 13 rises or sinks, the magnetic proximity switch 12 contacts the float, and the magnetic proximity switch 12 at the required liquid level sends a signal to the controller 4. The controller 4 determines whether the liquid level meets the requirements based on the signal received from the magnetic proximity switch 12. The controller 12 accurately indicates the function of verifying the liquid level in the float based on its position, and monitors and adjusts the liquid level in the float 13 in real time, making the liquid level verification process of the entire system more efficient and accurate.

[0025] like Figure 1 As shown, the controller 4 is connected to the power supply 9 via a power cord to enable its use. The controller 4 can be a common PLC controller. The controller 4 is equipped with a water injection switch 15 and a water drainage switch 16 to control the operation of the drain pump 5 and the water injection pump 6, as well as a cleaning switch 17 to control the cleaning of the drain pipe and the water injection pipe; an automatic / manual switching switch 20 for water injection / drainage; a display screen 18 for automatic control of water injection / drainage volume; and an adjustment knob 19 for manual adjustment of water injection / drainage speed.

[0026] Specifically, the drain switch 16 is located between the water injection switch 15 and the cleaning switch 16. The cleaning switch 16 is positioned below the switching switch 20, the adjusting knob 19 is positioned above the switching switch 20, and the display screen 18 is positioned above the water injection switch 15. In actual use, the controller 4 receives the magnetic signal from the magnetic proximity switch 12, which is displayed on the screen. Then, based on the displayed liquid level in the float, pressing the water injection switch 15 controls the water injection pump 6 to inject water, or pressing the drain switch 16 controls the drain pump 5 to drain water.

[0027] like Figure 1 As shown, a drainage solenoid valve 7 and a drainage tank 10 are also installed on the drainage pipeline, and a drainage pump 5 is installed between the drainage solenoid valve 7 and the drainage tank 10; a water injection solenoid valve 8 and a water injection tank 11 are also installed on the water injection pipeline, and a water injection pump 6 is installed between the water injection solenoid valve 8 and the water injection tank 11.

[0028] Specifically, the outlet of drain pump 5 is connected to the top of drain tank 10 via a pipeline, and the inlet of drain pump 5 is connected to quick connector 1 via drain solenoid valve 7, enabling the electric pump to drain the float of the float level gauge. The inlet of water pump 6 is connected to the bottom of water tank 11 via a pipeline, and the outlet of water pump 6 is connected to quick connector 1 via water injection solenoid valve 8, enabling the electric pump to inject water into the float of the float level gauge. By controlling water injection pump 6 with water injection switch 15 and drain pump 5 with drain switch 16, the functions of injecting and draining water into the float of the float level gauge can be realized, ensuring the accuracy of measurement and the efficient operation of the system.

[0029] A support is installed on the outside of the float 13, and a connecting pipe 2 is also installed on the support. The connecting pipe 2 is connected to the quick connector 1 on the tee pipe, and a connecting pipe regulating valve 3 is installed between the connecting pipe 2 and the quick connector 1. The connecting pipe 2 and the float are connected by a compression fitting.

[0030] Specifically, by using the regulating valve 3 between the connecting pipe 2 and the quick connector 1, the water distribution of the connecting pipe 2 during the water injection process can be controlled and adjusted, ensuring that the water volume between the float 13 and the connecting pipe 2 can be properly distributed, thereby avoiding the situation where water may gush out from the connecting pipe 2 during the water injection process.

[0031] The working principle of this utility model:

[0032] First, turn on the main switch of the calibration device to confirm that the calibration device is powered on normally. Then, connect the quick connector 1 to the root valve 14 at the bottom of the float 13, and fix the connecting pipe 2 to the bracket of the float level gauge with cable ties. According to the measurement range of the float level gauge, fix the magnetic proximity switch 12 at the calibration level position (5 points are evenly distributed according to the range), and connect the magnetic proximity switch 12 to the controller 4 through the line.

[0033] Then, water is poured into the water tank 11, the calibration level is set in the controller 4, the root valve 14 at the bottom of the float level gauge is opened, the connecting pipe regulating valve 3 is slightly opened, and the water injection switch is pressed to start water injection calibration. After the float level reaches near the set level (magnetic proximity switch 12 is triggered), water injection is automatically stopped. The calibration level in the float is precisely controlled by manual control. The float drainage calibration level is set on the controller 4, and the drainage switch is pressed to make the device start to automatically drain to near the set level (magnetic proximity switch 12 is triggered), and drainage is automatically stopped. The calibration level in the float is precisely controlled by manual control.

[0034] After the verification is completed, close the connecting pipe regulating valve 3 and the root valve 14, press the cleaning switch on the controller 4, and clean the pipeline of the verification device to remove dirt. During the cleaning process, it is necessary to ensure that there is always water in the water tank 11.

[0035] While the specific embodiments of this disclosure have been described above in conjunction with the accompanying drawings, this is not intended to limit the scope of protection of this disclosure. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without creative effort based on the technical solutions of this disclosure are still within the scope of protection of this disclosure.

Claims

1. A float level gauge verification device, characterized in that, The application relates to a float liquid level meter and a controller, wherein the float liquid level meter comprises a float and a float ball arranged in the float, a plurality of range scales are uniformly arranged on the float in the height direction, the liquid surface position height in the float can be directly read, a root valve for pressure relief is arranged at the bottom of the float, a plurality of position-adjustable limiting supports are arranged on the float, magnetic proximity switches connected with the controller are arranged on the limiting supports, and the magnetic proximity switches are uniformly arranged according to the range scales on the float.

2. A float level gauge calibration device according to claim 1, characterised in that The application further comprises a water drainage pipeline and a water injection pipeline, the water drainage pipeline and the water injection pipeline are connected with the root valve through a three-way pipeline, and the three-way pipeline and the root valve are connected through a quick connector.

3. A float level gauge calibration device according to claim 2, characterised in that The water drainage pipeline and the water injection pipeline are respectively provided with a water drainage pump and a water injection pump connected with the controller.

4. A float level gauge calibration device according to claim 3, characterised in that The water drainage pipeline is further provided with a water drainage electromagnetic valve and a water drainage tank, and the water drainage pump is arranged between the water drainage electromagnetic valve and the water drainage tank.

5. A float level gauge calibration device according to claim 4, characterised in that, The water drainage pump is communicated with the top of the water drainage tank through a pipeline.

6. A float level gauge calibration device according to claim 3, characterised in that The water injection pipeline is further provided with a water injection electromagnetic valve and a water injection tank, and the water injection pump is arranged between the water injection electromagnetic valve and the water injection tank.

7. A float level gauge calibration device according to claim 6, characterised in that The water injection pump is communicated with the bottom of the water injection tank through a pipeline.

8. A float level gauge calibration device according to claim 2, characterised in that, The quick connector is a three-way connector.

9. A float level gauge calibration device according to claim 1, characterised in that A support is arranged outside the float, a communication pipeline is arranged on the support, and the communication pipeline is connected with the quick connector on the three-way pipeline.

10. A float level gauge calibration device according to claim 9, characterised in that, A communication pipeline adjusting valve is arranged between the communication pipeline and the quick connector.

Images