Automatic vertical gas-liquid flow calibration device

Abstract

The invention discloses a flow measuring device, and aims to provide an automatic vertical gas-liquid flow calibration device which is high in automation degree, small in detection difficulty and capable of preventing overlarge pressure. The technical scheme is characterized in that gas and liquid to be measured are introduced into a device through a gas inlet valve and a water inlet valve; liquid is discharged through the water outlet valve arranged at the lower end of the water tank, gas is discharged through the gas outlet valve arranged at the upper end of the water tank, emptying is convenient, the liquid is not prone to remaining in the device, the detection device is directly connected with the valve, flow detection is convenient, errors are small, detection results are directly displayed on the displayer, operation is convenient, manual intervention is small, errors are greatly reduced, and the detection efficiency is improved. The pressure module can control the overall start and stop of the device, and can detect the pressure in the water tank during the operation of the device, thereby preventing the device from being damaged due to the overlarge pressure during the ventilation and water passing process, greatly improving the overall safety, and being suitable for the measurement neighborhood.

Description

Technical Field

[0001] The present invention relates to a flow measurement device, and more particularly to an automatic vertical gas-liquid flow calibration device. Background Art

[0002] Various production sites often involve fluid metering. In order to ensure the accuracy of measurement, the flow meter needs to be calibrated regularly to ensure that the error of the flow meter is within the accuracy range specified by the state or enterprise. The flow of gas and liquid is difficult to measure using ordinary methods. During measurement, a flow meter is generally used to accurately measure it. During calibration, the gas or liquid is usually introduced into the device first, and then measured and calibrated. When liquid and gas are introduced, other impurities will be brought in. These impurities will interfere with the measurement results and affect the accuracy of the experiment. In the measurement process, due to the excessive introduction of liquid or gas, the instrument is easily damaged, causing danger.

[0003] At present, although the gas-liquid flow calibration devices on the market can detect gas-liquid flow, there is a lot of manual intervention in the detection process, which is easy to cause errors during comparison. In addition, most water tanks are opaque structures, and the liquid level inside the water tank is unclear. Impurities are easily mixed in during the detection process, causing errors. In the process of passing gas / liquid, excessive pressure is easy to occur, which may cause danger. Summary of the invention

[0004] In view of the deficiencies in the prior art, the object of the present invention is to provide an automated vertical gas-liquid flow calibration device which has a high degree of automation, low detection difficulty and can prevent excessive pressure.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automated vertical gas-liquid flow calibration device, comprising a base, a water storage tank, a water header tank, an inner water tank and an outer water tank, each water tank being connected by a pipeline, each of which is provided with a water pump, the water storage tank comprising an exhaust valve, a left water outlet valve and a right water outlet valve, a water pump being provided between the left and right water outlet valves, and the water storage tank being connected to the water header tank, the inner water tank and the outer water tank by a pipeline at the same time, an air inlet valve being provided on the water header tank, one end of the water header tank being connected to the water storage tank, and the other end being connected to the inner water tank, and a standard valve and a detection device being provided between the water header tank and the inner water tank, and the inner water tank being connected to the outer Several inspected valves are arranged between the water tanks, and each inspected valve is provided with a detection device. The liquid or gas to be tested passes through the inspected valve between the outer water tank and the inner water tank and records data through the detection device. The outer water tank includes an inlet valve and an air inlet valve, and both the inner water tank and the outer water tank are provided with liquid level sensors. A display is also provided on the base for displaying information of each inspected valve. The outlet valve is arranged at the lower end of each water tank, and the air outlet valve is arranged at the upper end of each water tank. The water pump is a submersible pump arranged in a pipeline, and a pressure module for detecting the pressure in the water tank is also provided inside the outer water tank and the inner water tank.

[0006] By adopting the above technical scheme, the gas and liquid to be tested are introduced into the device through the air inlet valve and the water inlet valve, the liquid is discharged through the water outlet valve arranged at the lower end of the water tank, and the gas is discharged through the air outlet valve arranged at the upper end of the water tank. It is convenient to empty and the liquid is not easy to remain in the device. The liquid or gas in the water collecting tank, the inner water tank and the outer water tank can all be introduced into the water storage tank and discharged through the water storage tank. It is convenient to operate and has high drainage efficiency. The detection device is directly connected to the valve, and the flow detection is convenient with small error. The detection result is directly displayed on the display. It is convenient to operate with little manual intervention, which greatly reduces the error. The water pump is arranged in the pipeline with small size, light weight and low probability of failure, which improves the overall reliability of the equipment. A pressure module is arranged inside the outer water tank and the inner water tank. The pressure module can control the start and stop of the entire device and can detect the pressure in the water tank during the operation of the device to prevent damage to the device caused by excessive pressure during ventilation and water flow, thereby greatly improving the overall safety.

[0007] The controller in the control method of the present invention includes a control module for controlling the opening and closing of the valve and the start and stop of the water pump; a water inlet and outlet module for controlling the water inlet of the outer water tank and the drainage of the water storage tank; an air inlet and outlet module for controlling the air inlet of the outer water tank and the exhaust of the water storage tank; a liquid level module for detecting the liquid level signals of the inner water tank and the outer water tank; a detection module for detecting the information of the detected valve and comparing it with the standard valve; a timing module for recording the running time of each module. The control method includes

[0008] Follow these steps:

[0009] S1: Start the control module and the air inlet and outlet modules to draw compressed air into the external water tank and the water collection tank. The liquid in the water tank is collected into the water storage tank and finally discharged through the water storage tank.

[0010] The running time of the gas and outlet modules is T q ;

[0011] S2: elapsed time T q After that, the liquid level module detects the liquid levels of the inner water tank and the outer water tank.

[0012] According to N1 and W1;

[0013] S3: When N1>0 or W1>0, return to step S1 and continue execution;

[0014] S4: When N1=W1=0, start the water inlet and outlet modules, and the water flows into the external water tank.

[0015] Fill other water tanks through pipes, and the operation time of the water inlet and outlet modules is T s ;

[0016] S5: Elapsed time T s After that, the liquid level module detects the liquid levels of the inner water tank and the outer water tank.

[0017] According to N2 and W2;

[0018] S6: When the water inlet and outlet modules are running, the maximum liquid levels of the inner and outer water tanks are

[0019] Don't be N Max With W Max ;

[0020] S7: When N2<N Max Or W2<W Max , return to step S4 to continue execution;

[0021] S8: When N2 = N Max And W2=W Max , start the control module, the control module opens the air inlet valve on the external water tank, the air outlet valve on the water storage tank, the standard valve and the valve to be tested, the liquid passes through the valve to be tested and the standard valve and the data is recorded by the detection module, the detection time is T C ;

[0022] S9: Elapsed time T c After that, the detection module detects the flow of the standard valve and the valve to be tested.

[0023] The quantities are Q z With Q j ;

[0024] S10: When Q j=Q z When the valve is tested, the data of the tested valve is recorded and "valve is qualified" is displayed;

[0025] S11: When Q j ≠Q z When the water inlet and outlet modules, control module and detection

[0026] Test module, running time is T j ;

[0027] S12: Elapsed time T j The data of the standard valve and the valve under test are Q b and

[0028] Q d ;

[0029] S13: When Q b ≠Q d , record the data of the valve being tested and display "valve failed".

[0030] By adopting the above technical scheme, the residual liquid / gas in the water tank can be discharged through the water pump, and can be detected by the liquid level module after the discharge is completed, which effectively prevents the gas from remaining in the device. The liquid level module can also detect the liquid level in the water tank after the liquid / gas is introduced into the device to prevent the gas / liquid from not filling the water tank, effectively preventing gas from remaining in the process of introducing liquid, thereby improving the detection accuracy. The detection module is used to compare the detection results, and when the result is wrong, the valve is repeatedly measured multiple times, which greatly reduces the measurement error and improves the accuracy. In addition, no human intervention is required when the device is running, and the degree of automation is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of an automated vertical gas-liquid flow calibration device of the present invention;

[0032] Figure 2 This is a basic principle flow chart of an automated vertical gas-liquid flow calibration device of the present invention;

[0033] The reference numerals in the figure are: 1. water storage tank; 2. water collecting tank; 3. inner water tank; 4. outer water tank; 5. base; 6. standard valve; 7. detection device; 8. valve to be inspected; 9. display; 10. exhaust valve; 11. outlet valve; 111. left outlet valve; 112. right outlet valve; 12. submersible pump; 13. pipeline; 14. air inlet valve; 15. liquid level sensor; 16. inlet valve; 17. pressure module; 18. water pump. DETAILED DESCRIPTION

[0034] Reference Figures 1 to 2The present invention further describes an automatic vertical gas-liquid flow calibration device.

[0035] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship of one element or feature shown in the figure relative to another element or feature. It should be understood that, in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "under" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0036] Furthermore, relational terms such as “first” and “second” and the like are merely used to distinguish one component from another having the same name, but do not necessarily require or imply any such actual relationship or order between these components.

[0037] An automatic vertical gas-liquid flow calibration device comprises a base 5, a water storage tank 1, a water collection tank 2, an inner water tank 3 and an outer water tank 4, each water tank is connected by a pipe 13, each pipe 13 is provided with a water pump 18, the water storage tank 1 comprises an exhaust valve 10, a left water outlet valve 111, and a right water outlet valve 112, a water pump 18 is provided between the left and right water outlet valves, and the water storage tank 1 is simultaneously connected to the water collection tank 2, the inner water tank 3 and the outer water tank 4 by the pipe 13, the water outlet valve 11 is arranged at the lower end of each water tank, the exhaust valve 10 is arranged at the upper end of each water tank, and the gas to be measured is Liquid is introduced into the device through the air inlet valve 14 and the water inlet valve 16, and the liquid is discharged through the water outlet valve 11 arranged at the lower end of the water tank, and the gas is discharged through the air outlet valve arranged at the upper end of the water tank. It is convenient to empty, and the liquid is not easy to remain in the device. The water collection box 2 is provided with an air inlet valve 14, one end of the water collection box 2 is connected to the water storage tank 1, and the other end is connected to the inner water tank 3. The liquid or gas in the water collection box 2, the inner water tank 3 and the outer water tank 4 can all be introduced into the water storage tank 1 and discharged through the water storage tank 1. It is easy to operate and has high drainage efficiency. A standard valve 6 and a detection device 7 are provided between the water collection box 2 and the inner water tank 3. , a plurality of valves 8 to be inspected are arranged between the inner water tank 3 and the outer water tank 4, and each valve 8 to be inspected is provided with a detection device 7, the liquid or gas to be tested passes through the valve 8 to be inspected between the outer water tank 4 and the inner water tank 3 and records the data through the detection device 7, the detection device 7 is directly connected to the valve, the flow detection is convenient, the error is small, and the detection result is directly displayed on the display 9, the operation is convenient, the manual intervention is less, and the error is greatly reduced, the outer water tank 4 includes a water inlet valve 16 and an air inlet valve 14, and the inner water tank 3 and the outer water tank 4 are provided with a liquid level sensor 15, and the base 5 is also provided with a display The device 9 is used to display the information of each inspected valve 8. The water pump 18 is a submersible pump 12 arranged in the pipeline 13. The submersible pump 12 is arranged in the pipeline 13, which has a small size, light weight, and a small probability of failure, thereby improving the overall reliability of the equipment. The outer water tank 4 and the inner water tank 3 are also provided with a pressure module 17 for detecting the pressure in the water tank. The pressure module 17 can control the start and stop of the entire device, and can detect the pressure in the water tank during the operation of the device to prevent damage to the device due to excessive pressure during ventilation and water flow, thereby greatly improving the overall safety.

[0038] Combination Figure 2, the control method is further described. The control method is implemented by a controller arranged in the device. The controller includes a control module for controlling the opening and closing of the valve and the start and stop of the water pump 18; a water inlet and outlet module for controlling the water inlet of the outer water tank 4 and the drainage of the water storage tank 1; an air inlet and outlet module for controlling the air intake of the outer water tank 4 and the exhaust of the water storage tank 1; a liquid level module for detecting the liquid level signals of the inner water tank 3 and the outer water tank 4; a detection module for detecting the information of the detected valve 8 and comparing it with the standard valve 6; a timing module for recording the running time of each module. The control method includes the following steps:

[0039] S1: Start the control module and the air inlet and outlet modules to draw compressed air into the external water tank and the water collection tank. The liquid in the water tank is collected into the water storage tank and finally discharged through the water storage tank.

[0040] The running time of the gas and outlet modules is T q ;

[0041] S2: elapsed time T q Afterwards, the liquid level module detects the liquid level data of the inner water tank and the outer water tank as N1 and W1;

[0042] S3: When N1>0 or W1>0, return to step S1 and continue execution;

[0043] S4: When N1=W1=0, start the water inlet and outlet modules, the water flows into the external water tank, and fills other water tanks through the pipes. The operation time of the water inlet and outlet modules is T s ;

[0044] S5: Elapsed time T s Afterwards, the liquid level module detects the liquid level data of the inner water tank and the outer water tank as N2 and W2;

[0045] S6: When the water inlet and outlet modules are running, the maximum liquid levels of the inner water tank and the outer water tank are N Max With W Max ;

[0046] S7: When N2<N Max Or W2<W Max , return to step S4 to continue execution;

[0047] S8: When N2 = N Max And W2=W Max , start the control module, the control module opens the air inlet valve on the external water tank, the air outlet valve on the water storage tank, the standard valve and the valve to be tested, the liquid passes through the valve to be tested and the standard valve and the data is recorded by the detection module, the detection time is T C ;

[0048] S9: Elapsed time Tc After that, the detection module detects the flow rates of the standard valve and the valve under test as Q z With Q j ;

[0049] S10: When Q j =Q z When the valve is tested, the data of the tested valve is recorded and "valve is qualified" is displayed;

[0050] S11: When Q j ≠Q z When the water inlet and outlet modules, control module and detection module are restarted, the running time is T j ;

[0051] S12: Elapsed time T j The data of the standard valve and the valve under test are Q b With Q d ;

[0052] S13: When Q b ≠Q d , record the data of the valve being tested and display "valve failed".

[0053] Before starting the device, the water tank in the device is emptied to prevent residual liquid / gas in the water tank from affecting subsequent measurement results. Therefore, in the Tq time period, the liquid in the water tank is controlled by the control module and the air inlet and outlet modules. After the Tq time, the liquid level data is measured by the liquid level module. If the liquid level data is too large, the reason is generally that the working time is short and the liquid is not completely discharged, so it returns to the emptying stage to continue working. If the liquid level data is equal to 0, it enters the entry link. Since it takes a certain amount of time to fill the water tank with liquid / gas, it is necessary to run Ts time to prevent impurities from remaining in the water tank. After Ts time, the liquid level data is detected by the liquid level module. If the difference with the maximum liquid level value is too large, the reason is that the entry time is too short, so additional entry operation is required. If the liquid level If the data is the same as the maximum liquid level value, the detection starts, and the control module opens the air inlet valve 14 on the external water tank 4, the air outlet valve on the water storage tank 1, the standard valve 6 and the valve to be tested 8. The liquid passes through the valve to be tested 8 and the standard valve 6 and the detection module records the data. Since the flow data is the average value over a period of time, it takes Tc time to detect. After the detection is completed, if the flow rate of the valve to be tested 8 is too different from that of the standard valve 6, the reason is that the speed of the water pump 18 changes, so the water tank needs to be re-introduced and tested again. After multiple tests are completed, if the data of the valve to be tested 8 is too different from the standard value, the specific data of the valve is displayed on the display 9 and "valve unqualified", otherwise it is displayed "valve qualified", which is convenient for the staff to compare the data of unqualified valves, find out errors and perform repairs at the same time.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. An automated vertical gas-liquid flow calibration device, characterized in that: The invention comprises a water storage tank (1), a water collection tank (2), an inner water tank (3), an outer water tank (4) and a base (5); the water tanks are connected by a pipe (13); a water pump (18) is arranged on the pipe (13); a standard valve (6) and a detection device (7) are arranged between the water collection tank (2) and the inner water tank (3); a plurality of valves to be inspected (8) are arranged between the inner water tank (3) and the outer water tank (4); and a detection device (7) is arranged on each valve to be inspected (8); liquid or gas to be inspected passes through the valves to be inspected (8) between the outer water tank (4) and the inner water tank (3) and data is recorded by the detection device (7); and a display (9) is also arranged on the base (5) for displaying information of each valve to be inspected (8).

2. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The water storage tank (1) comprises an exhaust valve (10), a left water outlet valve (111), and a right water outlet valve (112); a water pump (18) is provided between the left and right water outlet valves; and the water storage tank (1) is simultaneously connected to a water collection tank (2), an inner water tank (3), and an outer water tank (4) via a pipeline (13).

3. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The water collection box (2) is provided with an air inlet valve (14); one end of the water collection box (2) is connected to the water storage box (1), and the other end is connected to the inner water box (3).

4. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The inner water tank (3) is provided with a liquid level sensor (15) for detecting the liquid level inside the inner water tank (3).

5. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The outer water tank (4) comprises a water inlet valve (16), an air inlet valve (14) and a liquid level sensor (15).

6. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The water pump (18) is a submersible pump (12) arranged in a pipeline (13).

7. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The outer water tank (4) and the inner water tank (3) are also provided with pressure modules (17) for detecting the pressure inside the water tanks.

8. The automatic vertical gas-liquid flow calibration device according to claim 1, characterized in that: The water outlet valve (11) is arranged at the lower end of each water tank, and the air outlet valve is arranged at the upper end of each water tank.

9. An automated vertical gas-liquid flow calibration device according to claim 1, characterized in that: The controller also includes a control module for controlling the opening and closing of the valve and the start and stop of the water pump (18); a water inlet and outlet module for controlling the water inlet of the outer water tank (4) and the water outlet of the water storage tank (1); an air inlet and outlet module for controlling the air inlet of the outer water tank (4) and the air outlet of the water storage tank (1); a liquid level module for detecting liquid level signals of the inner water tank (3) and the outer water tank (4); a detection module for detecting information of the valve to be detected (8) and comparing it with the standard valve (6); and a timing module for recording the running time of each module. The control method includes the following steps: S1: Start the control module and the air intake and outlet modules, suck the compressed air into the external water tank and the water collection tank, and the liquid in the water tank is collected into the water storage tank and finally discharged through the water storage tank. The operation time of the air intake and outlet modules is T q ; S2: elapsed time T q Afterwards, the liquid level module detects the liquid level data of the inner water tank and the outer water tank as N1 and W1; S3: When N1>0 or W1>0, return to step S1 and continue execution; S4: When N1=W1=0, start the water inlet and outlet modules, and the water flows into the external water tank. Fill other water tanks through pipes, and the operation time of the water inlet and outlet modules is T s ; S5: Elapsed time T s Afterwards, the liquid level module detects the liquid level data of the inner water tank and the outer water tank as N2 and W2; S6: When the water inlet and outlet modules are running, the maximum liquid levels of the inner water tank and the outer water tank are N Max With W Max ; S7: When N2<N Max Or W2<W Max , return to step S4 to continue execution; S8: When N2 = N Max And W2=W Max , start the control module, the control module opens the air inlet valve on the external water tank, the air outlet valve on the water storage tank, the standard valve and the valve to be tested, the liquid passes through the valve to be tested and the standard valve and the data is recorded by the detection module, the detection time is T C ; S9: Elapsed time T c After that, the detection module detects the flow rates of the standard valve and the valve under test as Q z With Q j ; S10: When Q j =Q z When the valve is tested, the data of the tested valve is recorded and "valve qualified" is displayed; S11: When Q j ≠Q z When the water inlet and outlet modules, control module and detection module are restarted, the running time is T j ; S12: Elapsed time T j The data of the standard valve and the valve under test are Q b With Q d ; S13: When Q b ≠Q d , record the data of the inspected valve and display "valve failed".

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