Liquid turbine flowmeter calibration device

Abstract

The utility model relates to a calibration device, in particular to a liquid turbine flowmeter calibration device. Comprising an electric control cabinet, a PLC, a frequency converter, a main controller, a touch screen, a surge tank, a water pump, a water tank, a water inlet pipe, a water outlet pipe and a water inlet pipe, the interior of the electric control cabinet is divided into an upper cavity and a lower cavity, the PLC is arranged on the rear side of the right wall in the lower cavity, the frequency converter is arranged on the front side of the right wall in the lower cavity, and the main controller is arranged on the right wall in the upper cavity; a water inlet pipe is arranged on the right side of the top end of the water tank, a water outlet pipe is arranged in the water tank, a water pump is connected to the upper end of the water outlet pipe, and the water inlet pipe is connected between the water pump and the pressure stabilizing tank. According to the utility model, the first to sixth measuring pipes are designed, six detection pipelines with different calibers are recorded, and the stop valve is equipped, so that the detection pipeline matched with the pipe diameter of a detected meter can be rapidly selected for testing.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of calibration devices, in particular to a kind of liquid turbine flowmeter calibration device. BACKGROUND

[0002] Liquid turbine flowmeter is widely used in petroleum, chemical industry, water treatment and multiple industries, for accurately measuring the flow of fluid. In order to ensure that these flowmeters reach high-precision standards before leaving the factory, it is necessary to use a special calibration device to calibrate them.

[0003] The liquid turbine flowmeter calibration device is a software and hardware system for accurately calibrating liquid turbine flowmeters before they leave the factory. It determines the accuracy of the flowmeter based on the difference between the standard flow value and the measured flow value, and makes necessary adjustments and calibrations. The existing small calibration table needs to replace the corresponding front and rear straight pipes according to the size of the pipe diameter of the detected meter, which is relatively cumbersome to replace and affects the efficiency of leaving the factory. SUMMARY

[0004] In order to overcome the shortcomings of the existing small calibration table, which needs to replace the corresponding front and rear straight pipes according to the pipe diameter of the detected meter, which is relatively cumbersome to replace and affects the efficiency of leaving the factory, the purpose of the utility model is to provide a liquid turbine flowmeter calibration device.

[0005] The technical implementation scheme of the utility model is: a liquid turbine flowmeter calibration device, comprising an electric control cabinet, a PLC controller, a frequency converter, a main controller, a touch screen, a pressure stabilizing tank, a water pump, a water tank, a water inlet pipe, a water return pipe, a water outlet pipe, a shut-off valve, a standard meter, a detected meter, a first measuring pipe, a second measuring pipe, a third measuring pipe, a fourth measuring pipe, a fifth measuring pipe, a sixth measuring pipe and a water inlet pipe. The inside of the electric control cabinet is divided into two cavities, a PLC controller is arranged on the right wall of the lower cavity, a frequency converter is arranged on the front right wall of the lower cavity, a main controller is arranged on the right wall of the upper cavity, and a touch screen is connected to the main controller. A pressure stabilizing tank is arranged on the top front side of the electric control cabinet, a water tank is arranged on the right side of the electric control cabinet, a water inlet pipe is arranged on the top right side of the water tank, a water outlet pipe is arranged in the water tank, a water pump is connected to the upper end of the water outlet pipe, a water inlet pipe is connected between the water pump and the pressure stabilizing tank, a water return pipe is connected between the pressure stabilizing tank and the water tank, and a first measuring pipe, a second measuring pipe, a third measuring pipe, a fourth measuring pipe, a fifth measuring pipe and a sixth measuring pipe are connected between the water return pipe and the water tank from top to bottom. Shut-off valves, standard meters, detected meters and shut-off valves are arranged on the first measuring pipe, the second measuring pipe, the third measuring pipe, the fourth measuring pipe, the fifth measuring pipe and the sixth measuring pipe from left to right. The PLC controller, the frequency converter, the standard meter, the detected meter and the shut-off valve are electrically connected to the main controller.

[0006] Further, the water tank is provided with a liquid level gauge at the top front side, and the measuring part of the liquid level gauge abuts against the inner bottom end of the water tank.

[0007] Further, the electric control cabinet is provided with door plates which are hingedly connected to the upper left end and the lower left end of the electric control cabinet.

[0008] Further, the return water pipe is a water pipe which is formed by connecting two horizontal straight pipes and a vertical straight pipe through an elbow pipe, and the diameter of the vertical straight pipe is slightly larger than the diameters of the two horizontal straight pipes.

[0009] Further, the electric control cabinet is provided with door plates which are hingedly connected to the upper left end and the lower left end of the electric control cabinet.

[0010] Further, the electric control cabinet is provided with door plates which are hingedly connected to the upper left end and the lower left end of the electric control cabinet.

[0011] The utility model has the advantages of the following: 1. The first measuring pipe to the sixth measuring pipe are designed, six kinds of detection pipes with different diameters are provided, and cut-off valves are provided, so that the detection pipe with a diameter suitable for the detected meter can be quickly selected for testing, and the corresponding front and rear straight pipes do not need to be replaced according to the diameter of the detected meter, so that the calibration efficiency of the detected meter is greatly improved.

[0012] 2. The water tank is provided with a drain pipe, so that the water tank is easy and quick to clean, the door plates of the electric control cabinet can protect the elements in the electric control cabinet, and the handle facilitates the opening of the electric control cabinet. DRAWINGS

[0013] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0014] Figure 2 It is a three-dimensional structure schematic view of the utility model.

[0015] Figure 3 It is a three-dimensional structure schematic view of the utility model.

[0016] Figure 4 It is a three-dimensional structure schematic view of the utility model.

[0017] In the above drawings: 1: electric control cabinet, 102: door plate, 103: handle, 3: PLC controller, 4: frequency converter, 5: main controller, 501: touch screen, 6: pressure tank, 7: water pump, 8: water tank, 9: water inlet pipe, 901: backwater pipe, 902: water outlet pipe, 10: cut-off valve, 11: standard meter, 12: meter under test, 13: first measuring pipe, 14: second measuring pipe, 15: third measuring pipe, 16: fourth measuring pipe, 17: fifth measuring pipe, 18: sixth measuring pipe, 19: drain pipe, 20: water inlet pipe, 21: liquid level meter, 22: alarm lamp. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] A liquid turbine flowmeter calibration device, such as Figures 1-4As shown, including electric control cabinet 1, PLC controller 3, frequency converter 4, main controller 5, touch screen 501, pressure tank 6, water pump 7, water tank 8, water inlet pipe 9, backwater pipe 901, water outlet pipe 902, cut-off valve 10, standard meter 11, detected meter 12, first measuring pipe 13, second measuring pipe 14, third measuring pipe 15, fourth measuring pipe 16, fifth measuring pipe 17, sixth measuring pipe 18 and water inlet pipe 20, the inside of electric control cabinet 1 is divided into two cavities, the right wall of the lower cavity is provided with PLC controller 3, the right wall of the lower cavity is provided with frequency converter 4, the right wall of the upper cavity is provided with main controller 5, main controller 5 is connected with touch screen 501, people can operate main controller 5 through touch screen 501 to control frequency converter 4 and PLC controller 3, the top of electric control cabinet 1 is provided with pressure tank 6, pressure tank 6 plays a role in stabilizing the pressure of water in the pipeline, so that the pressure of water out of pressure tank 6 is maintained within a certain range, the right side of electric control cabinet 1 is provided with water tank 8, the right side of the top of water tank 8 is provided with water inlet pipe 20, water can be added to water tank 8 through water inlet pipe 20, water tank 8 is provided with water outlet pipe 902, the upper end of water outlet pipe 902 is connected with water pump 7, water pump 7 and pressure tank 6 are connected through water inlet pipe 9, pressure tank 6 and water tank 8 are connected through backwater pipe 901, backwater pipe 901 is a water pipe connected by two horizontal straight pipes and a vertical straight pipe, the diameter of the vertical straight pipe is slightly larger than that of the two horizontal straight pipes, first measuring pipe 13, second measuring pipe 14, third measuring pipe 15, fourth measuring pipe 16, fifth measuring pipe 17 and sixth measuring pipe 18 are sequentially connected between backwater pipe 901 and water tank 8 from top to bottom, a total of six measuring pipes, the diameters of the measuring pipes are different, and the diameters of the measuring pipes decrease from top to bottom, the diameter of the vertical straight pipe of backwater pipe 901 is slightly larger than that of the two horizontal straight pipes, which is conducive to the backflow of water through first measuring pipe 13, second measuring pipe 14, third measuring pipe 15, fourth measuring pipe 16, fifth measuring pipe 17 and sixth measuring pipe 18 to water tank 8, cut-off valve 10, standard meter 11, detected meter 12 and cut-off valve 10 are sequentially arranged on first measuring pipe 13, second measuring pipe 14, third measuring pipe 15, fourth measuring pipe 16, fifth measuring pipe 17 and sixth measuring pipe 18 from left to right, when cut-off valve 10 is in the closed state, water cannot flow into water tank 8 through the pipeline, PLC controller 3, frequency converter 4, standard meter 11, detected meter 12 and cut-off valve 10 are electrically connected with main controller 5.

[0020] As Figures 1-4As shown, it also includes a liquid level meter 21 and an alarm lamp 22, the top front side of the water tank 8 is provided with the liquid level meter 21, the liquid level meter 21 is used to monitor the water level in the water tank 8, the measuring part of the liquid level meter 21 is in contact with the inner bottom end of the water tank 8, the top of the water tank 8 is provided with the alarm lamp 22, the liquid level meter 21 and the alarm lamp 22 are electrically connected with the main controller 5, during the process of adding water to the water tank 8, the liquid level meter 21 will monitor the height of the liquid surface in the water tank 8 in real time, when the height of the liquid surface exceeds the set value, the liquid level meter 21 will transmit information to the main controller 5, the main controller 5 controls the alarm lamp 22 to issue sound and light alarm, reminding people to stop adding water to the water tank 8.

[0021] As shown in the figure, Figure 1 As shown, it also includes a door plate 102 and a handle 103, the left upper end and the left lower end of the electric control cabinet 1 are symmetrically hinged with the door plate 102, the left end of the door plate 102 is provided with the handle 103, the design of the door plate 102 makes the electric control cabinet 1 form a closed space, which can protect the elements inside the electric control cabinet 1, and the handle 103 facilitates people to open the electric control cabinet 1.

[0022] As shown in the figure, Figures 1-3 As shown, it also includes a drain pipe 19, the front lower part of the water tank 8 is connected with the drain pipe 19, the drain pipe 19 is provided with a control switch, when the water tank 8 needs to be maintained, the control switch in the drain pipe 19 can be opened to empty the water in the water tank 8, and then the water tank 8 is maintained.

[0023] PLC controller 3, frequency converter 4 is installed in the lower side of the electric control cabinet 1 inner cavity, through MODBUS communication and analog quantity with PLC exchange data, the operator can through the main controller 5 control frequency converter 4 frequency, set the parameter of the table 12 to be detected and detect the pipeline, design has the first measuring pipe 13, the second measuring pipe 14, the third measuring pipe 15, the fourth measuring pipe 16, the fifth measuring pipe 17 and the sixth measuring pipe 18, a total of 6 detection pipeline (with the same pipe diameter under 1 ‰ accuracy mass flowmeter as standard instrument, based on the standard flow value (standard instrument measured flow value), and the difference between the measured value of the flowmeter (the flow value measured by the table 12 to be detected) to be calibrated, before the calibration process, the table 12 to be detected to be measured is installed on the appropriate detection pipeline (detection pipeline: one of the first measuring pipe 13, the second measuring pipe 14, the third measuring pipe 15, the fourth measuring pipe 16, the fifth measuring pipe 17 and the sixth measuring pipe 18), set the corresponding parameters and measurement range of the table 12 to be detected on the touch screen 501 of the main controller 5, set the detection pipeline used (set the detection pipeline: the cut-off valve 10 on the left and right sides of the detection pipeline where the table 12 to be detected is installed is opened, and the cut-off valve 10 on the other detection pipeline is in the closed state), start the water pump 7, the water pump 7 draws water in the water tank 8 through the water outlet pipe 902, and then sends the water into the pressure tank 6 through the water inlet pipe 9, the water in the pressure tank 6 flows out from the water outlet of the pressure tank 6 and enters the backwater pipe 901, and then flows back to the water tank 8 through the cut-off valve 10, the standard meter 11, the table 12 to be detected and the cut-off valve 10 in the detection pipeline used this time, the lower outlet of the backwater pipe 901 can return the excess water to the water tank 8, after the water flow in the detection pipeline used this time is stable, the main controller 5 will start to record the water flow curve change through the table 12 to be detected within the set time, and compare with the standard meter 11, finally display the calibration report of the table 12 to be detected on the touch screen 501.

[0024] Although the present disclosure has been shown and described with respect to certain exemplary embodiments thereof, it should be understood by the skilled in the art that certain changes and modifications can be made without departing from the spirit and scope of the present disclosure, which is defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above-described embodiments, but should be determined by the appended claims and their equivalents.

Claims

1. A liquid turbine flowmeter calibration device comprising an electric control cabinet (1), characterized in that: Also includes The PLC controller (3), frequency converter (4), main controller (5), touch screen (501), pressure tank (6), water pump (7), water tank (8), water inlet pipe (9), backwater pipe (901), water outlet pipe (902), cut-off valve (10), standard table (11), the table (12), the first measuring tube (13), the second measuring tube (14), the third measuring tube (15), the fourth measuring tube (16), the fifth measuring tube (17), the sixth measuring tube (18) and water inlet pipe (20), the inside of electric control cabinet (1) is divided into two cavities, the right wall of the lower cavity is provided with PLC controller (3), the right wall of the lower cavity is provided with frequency converter (4), the right wall of the upper cavity is provided with main controller (5), main controller (5) is connected with touch screen (501), the top of electric control cabinet (1) is provided with pressure tank (6), the right side of electric control cabinet (1) is provided with water tank (8), the top of water tank (8) is provided with water inlet pipe (20), water tank (8) is provided with water outlet pipe (902), the upper end of water outlet pipe (902) is connected with water pump (7), water pump (7) and pressure tank (6) are connected with water inlet pipe (9), pressure tank (6) and water tank (8) are connected with backwater pipe (901), backwater pipe (901) and water tank (8) are connected with first measuring tube (13), second measuring tube (14), third measuring tube (15), fourth measuring tube (16), fifth measuring tube (17) and sixth measuring tube (18) from top to bottom, first measuring tube (13), second measuring tube (14), third measuring tube (15), fourth measuring tube (16), fifth measuring tube (17) and sixth measuring tube (18) are provided with cut-off valve (10), standard table (11), the table (12) and cut-off valve (10) from left to right, PLC controller (3), frequency converter (4), standard table (11), the table (12) and cut-off valve (10) are electrically connected with main controller (5).

2. A liquid turbine flowmeter calibration device as defined in claim 1 wherein: Also includes liquid level meter (21) and alarm lamp (22), the top of water tank (8) is provided with liquid level meter (21), the measuring part of liquid level meter (21) is in contact with the inner bottom of water tank (8), the top of water tank (8) is provided with alarm lamp (22), liquid level meter (21) and alarm lamp (22) are electrically connected with main controller (5).

3. A liquid turbine flowmeter calibration apparatus as defined in claim 2 wherein: Also includes door plate (102), the upper left end and lower left end of electric control cabinet (1) are hingedly provided with door plate (102).

4. A liquid turbine flowmeter calibration apparatus as defined in claim 3 wherein: Backwater pipe (901) is a water pipe connected by two horizontal straight pipes and a vertical straight pipe, and the diameter of the vertical straight pipe is slightly larger than that of the two horizontal straight pipes.

5. A liquid turbine flowmeter calibration device as defined in claim 4 wherein: Also includes handle (103), the left end of door plate (102) is provided with handle (103).

6. A liquid turbine flowmeter calibration device as recited in claim 5 wherein: Also includes drain pipe (19), the lower front end of water tank (8) is connected with drain pipe (19), drain pipe (19) is provided with control switch.

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