CN114894280A - Liquid level meter calibrating device - Google Patents
Liquid level meter calibrating device Download PDFInfo
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- CN114894280A CN114894280A CN202210819203.8A CN202210819203A CN114894280A CN 114894280 A CN114894280 A CN 114894280A CN 202210819203 A CN202210819203 A CN 202210819203A CN 114894280 A CN114894280 A CN 114894280A
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- 239000007788 liquid Substances 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 315
- 238000012795 verification Methods 0.000 claims abstract description 46
- 238000012360 testing method Methods 0.000 claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 12
- 239000011521 glass Substances 0.000 claims abstract description 11
- 238000007654 immersion Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention discloses a liquid level meter calibrating device, which comprises a calibration water tank on the front side of a tank body, a water storage tank on the rear side and a water inlet and drainage device on the right side; water is added or drained to the verification water tank and the water storage tank through the water inlet and drainage device on the right side; when the test is started, the water inlet and drainage device controls the water to be added into the verification water tank from the water storage tank to the test water level; a transparent glass panel is arranged on the front side of the verification water tank, and water level scales are arranged on the glass panel; a liquid level meter interface is arranged below the front side of the verification water tank and is used for connecting a pressure type liquid level meter to be detected; a feeding port is reserved above the verification water tank and used for feeding an immersion liquid level meter to be detected; measuring the measured water level by a liquid level meter to be measured; the device is also provided with a standard liquid level meter, and the measured value of the standard liquid level meter is used as a standard water level and used for calibrating the liquid level meter to be measured. The invention designs an integrated calibrating device, can conveniently calibrate various liquid level meters to be measured, and realizes different test water levels through the control of the water inlet and outlet devices to carry out multiple measurements.
Description
Technical Field
The invention relates to the technical field of sensor calibration, in particular to a liquid level meter calibrating device.
Background
Level gauges, meters used to indicate liquid level in industrial process measurements. The liquid level meter includes various types, including a contact type and a non-contact type according to a measuring mode, a buoyancy type, a pressure type and the like according to a measuring principle. Level gauges require first verification, subsequent verification and in-use inspection. Therefore, the whole service cycle of the liquid level meter needs to be verified for many times, and standard instruments and matched calibration devices are needed for calibrating the technical requirements of the liquid level meter.
The existing liquid level meter calibrating equipment comprises a vertical liquid level calibrating device, a horizontal liquid level simulation calibrating device, a vernier caliper, a steel tape, a laser length measuring instrument, a pressure standard and the like, and is calibrated after being selectively combined into a whole set, so that the calibrating process is complex and the efficiency is low. Therefore, a need exists for a simple and convenient kit for level gauge calibration.
Disclosure of Invention
In order to solve the defects in the prior art, the invention aims to provide a liquid level meter calibrating device.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a liquid level meter calibrating device comprises a box body, a calibration water tank positioned on the front side of the box body, a water storage tank positioned on the rear side of the box body, and a water inlet and drainage device positioned on the right side of the box body; water is added or drained to the verification water tank and the water storage tank through the water inlet and drainage device on the right side;
when the test is started, the water inlet and drainage device controls the water to be added into the verification water tank from the water storage tank to the test water level; a transparent glass panel is arranged on the front side of the verification water tank, and water level scales are arranged on the glass panel;
a liquid level meter interface is arranged below the front side of the verification water tank and is used for connecting a pressure type liquid level meter to be detected; a feeding port is reserved above the verification water tank and used for feeding an immersion liquid level meter to be detected; the water level meter to be measured measures the measured water level at the moment and sends the measured water level to the upper computer in a wired or wireless transmission mode;
in the water inlet and drainage device on the right side, a standard liquid level meter is arranged at a first water outlet at the bottom of the verification water tank, the measured value of the standard liquid level meter is used as a standard water level, and an upper computer is used for calibrating the liquid level meter to be measured;
the water inlet and drainage device comprises a first valve, a second valve, a third valve and a fourth valve; the water inlet comprises a first water outlet, a second water outlet, a third water inlet and a fourth water inlet; a main valve, a main water inlet and outlet pipeline, a water pump and a water inlet pipe;
the water adding process of the verification water tank comprises the steps that a first valve, a fourth valve and a main valve are closed, a second valve and a third valve are opened, water in a water storage tank flows out from a second water outlet at the bottom and enters a water pump, the water is pumped by the water pump and is sent through a water inlet pipe, and the water enters the verification water tank at the front side of the device through a third valve and a third water inlet; through the scale observation on the glass panel of the verification water tank, when the water inlet meets the requirement of the test water level, the water inlet is stopped, and the second valve and the third valve are closed.
Further, the calibration of the liquid level meter is to calculate the measurement error of the measured water level and the standard water level, and the liquid level meter passes the calibration when the measurement error does not exceed the maximum allowable error.
Furthermore, during calibration, a plurality of different test water levels can be selected from the zero point to the measuring range of the liquid level meter, so that a plurality of groups of test data can be obtained.
Furthermore, the process of detecting the water discharge of the water tank comprises the steps that the second valve, the third valve and the main valve are closed, the first valve and the fourth valve are opened, the water in the detected water tank flows out from the first water outlet at the bottom and enters the water pump, the water is pumped by the water pump and is delivered through the water inlet pipe, and the water enters the water storage tank at the rear side of the device through the fourth valve and the fourth water inlet; and when the water discharging is finished, closing the first valve and the fourth valve.
Further, at the initial moment, the water storage tank needs to store inlet water, the first valve, the second valve and the third valve are closed, the fourth valve and the main valve are opened, and an external water source enters the water pump through the main water inlet and outlet pipeline, the main valve and the main water inlet and outlet; pumping water by a water pump, delivering the water through a water inlet pipe, and entering a water storage tank at the rear side of the device through a fourth valve and a fourth water inlet; when enough water enters the water storage tank to meet the test requirement of the device, the main valve and the fourth valve are closed, and external water inlet is stopped.
Further, when the device is not used, water in the verification water tank and the water storage tank is discharged completely, the third valve and the fourth valve are closed at the moment, the first valve, the second valve and the main valve are opened, the water in the verification water tank and the water storage tank flows out from the first water outlet and the second water outlet at the bottom, then flows out from the main water inlet and outlet pipeline, and a water pump does not need to be opened.
Furthermore, a relay device is arranged in the water inlet and outlet device and used for controlling the opening and closing of the valve and is controlled by a central controller, and the central controller is connected with an upper computer; meanwhile, the central controller controls the operation of the water pump.
Further, a plurality of level gauge interfaces of different interface types are provided.
Further, the standard level gauge is a pressure type level gauge.
Compared with the prior art, the integrated calibrating device has the advantages that the integrated calibrating device is designed, various liquid level meters to be measured can be conveniently calibrated, different test water levels are controlled by the water inlet and outlet device, and multiple measurements are carried out.
Drawings
FIG. 1 is a perspective view of a gauge calibration apparatus according to the present invention;
FIG. 2 is a schematic view of the entire water intake and discharge device;
FIG. 3 is a partial schematic view of the underside of the influent and effluent fixture;
FIG. 4 is a schematic view of a portion of the inlet drain control;
FIG. 5 is a partial schematic view of the upper side of the intake and drainage device;
FIG. 6 is a top view of a liquid level gauge calibration apparatus according to the present invention;
FIG. 7 is a left side view of the liquid level gauge calibration apparatus of the present invention;
reference numerals:
the system comprises a box body 1, a verification water tank 2, a water storage tank 3, a water inlet and drainage device 4, a standard liquid level meter 5, a relay device 6 and a central controller 7;
a liquid level meter interface 2-1 and a feeding port 2-2;
a first valve 4-1, a second valve 4-2, a third valve 4-3 and a fourth valve 4-4; 4-5 parts of a first water outlet, 4-6 parts of a second water outlet, 4-7 parts of a third water inlet and 4-8 parts of a fourth water inlet; 4-9 parts of a main valve, 4-10 parts of a main water inlet and outlet, 4-11 parts of a main water inlet and outlet pipeline, 4-12 parts of a water pump and 4-13 parts of a water inlet pipe.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present application is not limited thereby.
As shown in fig. 1 and 2 and fig. 6 and 7, the liquid level meter calibrating device of the present invention includes a tank 1, a calibration water tank 2 located at the front side of the tank 1, a water storage tank 3 located at the rear side, and a water inlet and outlet device 4 located at the right side. Water is added or drained to the verification water tank 2 and the water storage tank 3 through the water inlet and drainage device 4 on the right side.
Wheels are arranged below the box body 1, so that the device can be moved conveniently. An indicator light is arranged on a panel in front of the box body 1, the working process of the device can be seen, and an emergency stop button is arranged.
As shown in fig. 3, 4 and 5, the water inlet and outlet device 4 comprises a first valve 4-1, a second valve 4-2, a third valve 4-3 and a fourth valve 4-4; 4-5 parts of a first water outlet, 4-6 parts of a second water outlet, 4-7 parts of a third water inlet and 4-8 parts of a fourth water inlet; 4-9 parts of a main valve, 4-10 parts of a main water inlet and outlet, 4-11 parts of a main water inlet and outlet pipeline, 4-12 parts of a water pump and 4-13 parts of a water inlet pipe.
At the initial moment, a water storage tank 3 in the device needs to store inlet water, firstly, a first valve 4-1, a second valve 4-2 and a third valve 4-3 are closed, a fourth valve 4-4 and a main valve 4-9 are opened, and an external water source enters a water pump 4-12 through a main water inlet and outlet pipeline 4-11, the main valve 4-9 and a main water inlet and outlet 4-10. The water is pumped by a water pump 4-12 and is sent by a water inlet pipe 4-13, and then enters a water storage tank 3 at the rear side of the device through a fourth valve 4-4 and a fourth water inlet 4-8. When enough water enters the water storage tank 3 to meet the requirement of the device test, the main valve 4-9 and the fourth valve 4-4 are closed, and external water inlet is stopped.
When the test is started, the test water tank 2 needs to be filled with water, at the moment, the first valve 4-1, the fourth valve 4-4 and the main valve 4-9 are closed, the second valve 4-2 and the third valve 4-3 are opened, water in the water storage tank 3 flows out from the second water outlet 4-6 at the bottom, enters the water pump 4-12, is pumped by the water pump 4-12, is sent through the water inlet pipe 4-13, and enters the test water tank 2 at the front side of the device through the third valve 4-3 and the third water inlet 4-7. And through the scale observation on the glass panel of the verification water tank 2, when the water inflow meets the test requirement, the water inflow is stopped, and the second valve 4-2 and the third valve 4-3 are closed.
The water level in the verification water tank 2 can be adjusted, and the water level can be adjusted by adding water or discharging water.
The water discharging process of the verification water tank 2 comprises the steps that the second valve 4-2, the third valve 4-3 and the main valve 4-9 are closed, the first valve 4-1 and the fourth valve 4-4 are opened, water in the verification water tank 2 flows out from the first water outlet 4-5 at the bottom and enters the water pump 4-12, the water is pumped by the water pump 4-12 and is sent through the water inlet pipe 4-13, and the water enters the water storage tank 3 at the rear side of the device through the fourth valve 4-4 and the fourth water inlet 4-8. And when the water discharging is finished, the first valve 4-1 and the fourth valve 4-4 are closed.
When the device is not used, water in the verification water tank 2 and the water storage tank 3 can be discharged completely, at the moment, the third valve 4-3 and the fourth valve 4-4 are closed, the first valve, the second valve 4-2 and the main valve 4-9 are opened, water in the verification water tank 2 and the water storage tank 3 flows out from the first water outlet 4-5 and the second water outlet 4-6 at the bottom, then flows out from the main water inlet and outlet 4-10 and the main water inlet and outlet pipeline 4-11, and the water pump 4-12 does not need to be opened.
As shown in fig. 4, a relay device 6 is arranged inside the water inlet and outlet device 4 and used for controlling the opening and closing of the valve, and is controlled by a central controller 7, and the central controller is connected with an upper computer. At the same time, the central controller controls the operation of the water pumps 4-12.
When the liquid level meter calibrating device is adopted to calibrate the liquid level meter, firstly, the water inlet and drainage device 4 is used for injecting water into the calibration water tank 2 to the test set water levelh 1 As described above. The transparent glass panel is installed at the front side of the verification water tank 2, so that the water level can be observed conveniently, and water level scales are arranged on the glass panel and read visually.
A liquid level meter interface 2-1 is arranged below the front side of the verification water tank 2 and is used for connecting a pressure type liquid level meter. The device can be used for placing a storage groove on the ground corresponding to the interface of the liquid level meter and is used for placing the pressure type liquid level meter to be tested.
The invention is provided with a plurality of different interface types and is used for matching the pressure type liquid level meter without the interface type in the market. The pressure type liquid level meter to be measured is connected to a proper liquid level meter interface, the measured water level m at the moment can be measured, and the measured data is sent to an upper computer for statistics in a wired or wireless transmission mode. The working principle of the pressure type liquid level meter to be measured is that the water level is measured by measuring the water pressure at the bottom, and the measurement data is set according to the product of the pressure type liquid level meter to be measured in a wired or wireless transmission mode.
And a feeding port 2-2 is reserved above the verification water tank 2 and used for feeding an immersion liquid level meter. The immersion liquid level meter to be measured is put into the verification water tank 2 from the putting-in opening 2-2, the measured water level n at the moment can be measured, and the measured data is sent to the upper computer for statistics in a wired or wireless transmission mode. The working principle of the immersion type liquid level meter is that the water level is measured by measuring the buoyancy of the water surface.
Meanwhile, in the water inlet and outlet device 4 on the right side, a standard liquid level meter 5 is arranged at a first water outlet 4-5 at the bottom of the verification water tank 2, the standard liquid level meter is also a pressure type liquid level meter, the measured value of the standard liquid level meter is used as a standard water level s, and an upper computer is uploaded for calibrating the liquid level meter to be measured.
The water level in the verification water tank 2 can be adjusted, and a plurality of different test water levels can be selected from the zero point to the measuring range of the liquid level meter during the verification, so that different test water levels can be obtainedh 2 ，h 3 … et al, sets of experimental data were obtained.
The calibration of the liquid level meter is to calculate the measurement error of the measured water level and the standard water level, and the calculation formula of the measurement error is
. And the liquid level meter passes the calibration when the calculated measurement error does not exceed the maximum allowable error. Wherein the maximum allowable error is
And c may be 0.05, 0.1, 0.2, etc.
Compared with the prior art, the integrated calibrating device has the advantages that the integrated calibrating device is designed, various liquid level meters to be measured can be conveniently calibrated, different test water levels are controlled by the water inlet and outlet device, and multiple measurements are carried out.
The present applicant has described and illustrated embodiments of the present invention in detail with reference to the accompanying drawings, but it should be understood by those skilled in the art that the above embodiments are merely preferred embodiments of the present invention, and the detailed description is only for the purpose of helping the reader to better understand the spirit of the present invention, and not for limiting the scope of the present invention, and on the contrary, any improvement or modification made based on the spirit of the present invention should fall within the scope of the present invention.
Claims (9)
1. A liquid level meter calibrating device is characterized by comprising a box body (1), a calibration water tank (2) positioned on the front side of the box body (1), a water storage tank (3) on the rear side, and a water inlet and drainage device (4) on the right side; water is added or drained into the verification water tank (2) and the water storage tank (3) through the water inlet and drainage device (4) on the right side;
when a test is started, the water inlet and drainage device (4) is used for controlling the water to be added into the verification water tank (2) from the water storage tank (3) to a test water level; a transparent glass panel is arranged on the front side of the verification water tank (2), and water level scales are arranged on the glass panel;
a liquid level meter interface (2-1) is arranged below the front side of the verification water tank (2) and is used for connecting a pressure type liquid level meter to be detected; a feeding port (2-2) is reserved above the verification water tank (2) and used for feeding an immersion liquid level meter to be detected; the water level meter to be measured measures the measured water level at the moment and sends the measured water level to the upper computer in a wired or wireless transmission mode;
in the water inlet and drainage device (4) on the right side, a standard liquid level meter (5) is arranged at a first water outlet (4-5) at the bottom of the verification water tank (2), the measured value of the standard liquid level meter is used as a standard water level, and an upper computer is uploaded for calibrating the liquid level meter to be measured;
the water inlet and drainage device (4) comprises a first valve (4-1), a second valve (4-2), a third valve (4-3) and a fourth valve (4-4); a first water outlet (4-5), a second water outlet (4-6), a third water inlet (4-7) and a fourth water inlet (4-8); a main valve (4-9), a main water inlet and outlet (4-10), a main water inlet and outlet pipeline (4-11), a water pump (4-12) and a water inlet pipe (4-13);
the water adding process of the verification water tank (2) comprises the steps that a first valve (4-1), a fourth valve (4-4) and a main valve (4-9) are closed, a second valve (4-2) and a third valve (4-3) are opened, water in the water storage tank (3) flows out from a second water outlet (4-6) at the bottom, enters a water pump (4-12), is pumped by the water pump (4-12) and is conveyed through a water inlet pipe (4-13), and enters the verification water tank (2) at the front side of the device through the third valve (4-3) and a third water inlet (4-7); through the scale observation on the glass panel of the verification water tank (2), when the water inlet meets the requirement of the test water level, the water inlet is stopped, and the second valve (4-2) and the third valve (4-3) are closed.
2. The liquid level gauge calibration device of claim 1,
the calibration of the liquid level meter is to calculate the measurement error by the measured water level and the standard water level, and the liquid level meter passes the calibration when the measurement error does not exceed the maximum allowable error.
3. The liquid level gauge calibration device of claim 1,
during calibration, a plurality of different test water levels can be selected from the zero point to the measuring range of the liquid level meter, so that a plurality of groups of test data can be obtained.
4. The liquid level gauge calibration device of claim 1,
the water discharging process of the verification water tank (2) comprises the steps that a second valve (4-2), a third valve (4-3) and a main valve (4-9) are closed, a first valve (4-1) and a fourth valve (4-4) are opened, water in the verification water tank (2) flows out from a first water outlet (4-5) at the bottom, enters a water pump (4-12), is pumped by the water pump (4-12) and is conveyed through a water inlet pipe (4-13), and enters a water storage tank (3) at the rear side of the device through the fourth valve (4-4) and a fourth water inlet (4-8); and when the water discharging is finished, the first valve (4-1) and the fourth valve (4-4) are closed.
5. The liquid level gauge calibration device of claim 1,
at the initial moment, a water storage tank (3) needs to store inlet water, firstly, a first valve (4-1), a second valve (4-2), a third valve (4-3) are closed, a fourth valve (4-4) and a main valve (4-9) are opened, and an external water source enters a water pump (4-12) through a main water inlet and outlet pipeline (4-11), the main valve (4-9) and a main water inlet and outlet (4-10); pumping water by a water pump (4-12), delivering the water through a water inlet pipe (4-13), and entering a water storage tank (3) at the rear side of the device through a fourth valve (4-4) and a fourth water inlet (4-8); when enough water enters the water storage tank (3) to meet the test requirement of the device, the main valve (4-9) and the fourth valve (4-4) are closed, and external water inlet is stopped.
6. The liquid level gauge calibration device of claim 1,
when the device is not used, water in the verification water tank (2) and the water storage tank (3) is discharged completely, at the moment, the third valve (4-3) and the fourth valve (4-4) are closed, the first valve, the second valve (4-2) and the main valve (4-9) are opened, water in the verification water tank (2) and the water storage tank (3) flows out from the first water outlet (4-5) and the second water outlet (4-6) at the bottom, then flows out from the main water inlet/outlet (4-10) and the main water inlet/outlet pipeline (4-11), and a water pump (4-12) does not need to be started.
7. The liquid level gauge calibration device of claim 1,
a relay device (6) is also arranged in the water inlet and outlet device (4) and is used for controlling the opening and closing of the valve and is controlled by a central controller (7), and the central controller is connected with an upper computer; meanwhile, the central controller controls the operation of the water pumps (4-12).
8. Gauge calibration arrangement according to claim 1, characterized in that a plurality of gauge interfaces (2-1) of different interface types are provided.
9. Calibration device according to claim 1, characterized in that the standard gauge (5) is a pressure gauge.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819203.8A CN114894280A (en) | 2022-07-13 | 2022-07-13 | Liquid level meter calibrating device |
| CN202223082037.2U CN221238474U (en) | 2022-07-13 | 2022-11-21 | Liquid level meter calibrating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210819203.8A CN114894280A (en) | 2022-07-13 | 2022-07-13 | Liquid level meter calibrating device |
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| CN114894280A true CN114894280A (en) | 2022-08-12 |
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| CN202210819203.8A Pending CN114894280A (en) | 2022-07-13 | 2022-07-13 | Liquid level meter calibrating device |
| CN202223082037.2U Active CN221238474U (en) | 2022-07-13 | 2022-11-21 | Liquid level meter calibrating device |
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2022
- 2022-07-13 CN CN202210819203.8A patent/CN114894280A/en active Pending
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| CN221238474U (en) | 2024-06-28 |
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Application publication date: 20220812 |