A new type of alcohol meter calibration device

Abstract

The utility model discloses a novel alcohol meter verification and calibration device, comprising a verification and calibration platform, on which a double-layer vacuum overflow cylinder is arranged, in which a verification alcohol solution is contained, and temperature sensors are respectively arranged on the upper part, the middle part and the lower part of the inner wall surface of the double-layer vacuum overflow cylinder, and the temperature sensors are connected to an electronic temperature display through a wire; a disc is arranged on the top of the double-layer vacuum overflow cylinder, and two alcohol meter placement holes are arranged on the disc, which are respectively used to place a standard alcohol meter and a tested alcohol meter; the novel alcohol meter verification and calibration device provided by the utility model provides a constant temperature condition for the verification alcohol solution through the double-layer vacuum stainless steel overflow cylinder, avoids fluctuations in the temperature of the verification alcohol solution due to the external environment, and improves the accuracy of the verification and calibration results.

Description

Technical Field

[0001] The utility model belongs to the technical field of alcohol meter verification devices, and in particular relates to a novel alcohol meter verification and calibration device. Background Art

[0002] The statements herein merely provide background art related to the present invention and do not necessarily constitute prior art.

[0003] The calibration regulations for alcohol meters require that the calibration of alcohol meters be conducted in a constant temperature and humidity laboratory, where the temperature fluctuation is: ±2°C. The supporting equipment used for traditional calibration is a glass overflow cylinder. Since anhydrous ethanol needs to release heat during the dilution process, the prepared calibration solutions of different concentrations need to be left in a constant temperature room for a long time before use. In the actual calibration process, the thermal conductivity of the overflow cylinder material and the body temperature and breathing of the calibration personnel may affect the "microenvironment" of the calibration, causing fluctuations in the temperature of the calibration solution, thereby affecting the accuracy of the calibration results.

[0004] In addition, the traditional method of measuring the temperature of the alcohol solution is to hold a glass thermometer in hand, suspend it in the solution, and read the value after the temperature stabilizes. This operation has two shortcomings: first, it is difficult to control the suspension time of the hand-held glass thermometer, and it cannot correctly reflect the actual temperature of the calibration solution; second, the position of the mercury chamber of the glass thermometer in the standard solution is difficult to control, and it cannot correctly reflect the uniformity of the calibration solution temperature. Utility Model Content

[0005] The utility model aims to provide a novel alcohol meter verification and calibration device, which can avoid the fluctuation of the verification solution temperature and improve the accuracy of the verification result.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] In the first aspect, an embodiment of the utility model provides a novel alcohol meter verification and calibration device, comprising a verification and calibration platform, on which a double-layer vacuum overflow cylinder is arranged, wherein the double-layer vacuum overflow cylinder is filled with a verification alcohol solution, and temperature sensors are respectively arranged on the upper, middle and lower parts of the inner wall of the double-layer vacuum overflow cylinder, and the temperature sensors are connected to an electronic temperature display through wires; a disc is arranged on the top of the double-layer vacuum overflow cylinder, and two alcohol meter placement holes are arranged on the disc, which are respectively used to place a standard alcohol meter and a tested alcohol meter.

[0008] As a further technical solution, a reading microscope is installed on the upper surface of the verification and calibration platform, and the reading microscope is supported by a bracket.

[0009] As a further technical solution, an overflow pipe is installed on the upper part of the double-layer vacuum overflow cylinder, and the overflow pipe is connected to the overflow tank.

[0010] As a further technical solution, the overflow trough is arranged on the verification and calibration platform, and the overflow trough adopts a pull-out structure.

[0011] As a further technical solution, a drain pipe is installed at the bottom of the double-layer vacuum overflow cylinder, and the test alcohol solution is drained through the drain pipe.

[0012] As a further technical solution, the disc is made of plastic material and can float on the test alcohol solution.

[0013] As a further technical solution, the standard alcohol meter and the alcohol meter to be tested are installed in the alcohol meter placement hole and can float freely in the test alcohol solution.

[0014] As a further technical solution, the upper surface of the double-layer vacuum overflow cylinder is higher than the upper surface of the verification and calibration platform.

[0015] As a further technical solution, the double-layer vacuum overflow cylinder is made of stainless steel.

[0016] As a further technical solution, the temperature sensor adopts a platinum resistance temperature sensor.

[0017] The beneficial effects of the above-mentioned embodiments of the utility model are as follows:

[0018] The utility model provides a novel alcohol meter verification and calibration device, which provides a constant temperature condition for the verification alcohol solution by means of a double-layer vacuum stainless steel overflow cylinder, thereby avoiding temperature fluctuations of the verification alcohol solution caused by the external environment; multiple temperature sensors are provided to replace glass thermometers to detect the temperature of the verification alcohol solution, and three high-precision platinum resistance sensors are evenly arranged on the inner wall of the stainless steel cylinder. This design can not only well reflect the uniformity of the temperature of the verification standard solution, but also more accurately obtain the actual temperature value of the verification solution by calculating the average value of the temperature measurements at three points.

[0019] The novel alcohol meter verification and calibration device provided by the utility model avoids reading errors by means of a reading microscope, thereby improving the accuracy of the verification result; an alcohol meter placement hole is arranged on the disc, thereby preventing the two alcohol meters from touching each other and the alcohol meter from touching the wall of the overflow cylinder; and the plastic disc and the double-layer vacuum stainless steel overflow cylinder form a small closed environment, thereby further reducing the measurement error caused by temperature fluctuation.

[0020] The novel alcohol meter calibration device provided by the utility model discharges the excess calibration alcohol solution overflowed from two alcohol meters to the overflow tank through the arranged overflow pipe, and at the same time, discharges the calibration alcohol solution in the double-layer vacuum stainless steel overflow cylinder through the arranged drain pipe, so as to realize replacement of calibration alcohol solutions of different temperatures and different concentrations as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0022] Figure 1 It is a structural schematic diagram of a novel alcohol meter verification and calibration device of the utility model.

[0023] The schematic diagram is for illustrative purposes only;

[0024] Among them, 1. Verification and calibration platform; 2. Double-layer vacuum overflow cylinder; 3. Overflow groove; 4. Alcohol meter placement hole; 5. Drain pipe; 6. First temperature sensor; 7. Second temperature sensor; 8. Third temperature sensor; 9. Reading microscope; 10. Bracket; 11. Disc; 12. Electronic temperature display; 13. Overflow pipe. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0026] Example 1

[0027] In a typical implementation of the present invention, Figure 1 As shown, a novel alcohol meter verification and calibration device is provided, including a verification and calibration platform 1, on which a double-layer vacuum overflow cylinder 2 is arranged, and the double-layer vacuum overflow cylinder 2 is filled with a verification alcohol solution, and the upper part, middle part and lower part of the inner wall surface of the double-layer vacuum overflow cylinder are respectively provided with temperature sensors, namely a first temperature sensor 6, a second temperature sensor 7 and a third temperature sensor 8, and the temperature sensors are connected to an electronic temperature display 12 through wires; a disc 11 is arranged on the top of the double-layer vacuum overflow cylinder 2, and two alcohol meter placement holes 4 are arranged on the disc 11, which are respectively used to place a standard alcohol meter and a tested alcohol meter, and the activity space of the alcohol meter is reduced by setting the two alcohol meter placement holes to reduce collision.

[0028] The double-layer vacuum overflow cylinder 2 is provided with a heat preservation function for the calibration alcohol solution, so as to minimize the measurement error caused by the fluctuation of the ambient temperature.

[0029] Furthermore, a reading microscope 9 is installed on the upper surface of the verification and calibration platform 1, and the reading microscope 9 is supported by a bracket 10. The diameter of the scale end of the alcohol meter is less than 4 mm, and the graduation value is 0.1% vol. During verification, one digit needs to be estimated. Relying solely on the human eye will inevitably introduce a large reading error, resulting in increased uncertainty in the measurement results. For this reason, a reading microscope device is introduced to facilitate verification personnel to read the measurement data with high precision. The reading microscope and the bracket adopt existing structures.

[0030] In this embodiment, an overflow pipe 13 is installed on the upper part of the double-layer vacuum overflow cylinder 2, and the overflow pipe 13 is connected to the overflow tank 3. The overflow pipe 13 is located above the liquid level of the test alcohol solution. When the standard alcohol meter and the alcohol meter to be tested are placed in the double-layer vacuum overflow cylinder 2, the liquid level of the test alcohol solution rises, and the excess test alcohol solution enters the overflow tank 3 through the overflow pipe 13.

[0031] Furthermore, the overflow trough 3 is arranged on the verification and calibration platform 1, and the overflow trough 3 adopts a pull-out structure. When the verification alcohol solution collected in the overflow trough 3 is excessive, the overflow trough can be pulled out through the pull-out structure for dumping.

[0032] Furthermore, a drain pipe 5 is installed at the bottom of the double-layer vacuum overflow cylinder 2, and the test alcohol solution is drained through the drain pipe 5 to facilitate the replacement of test alcohol solutions of different temperatures and concentrations.

[0033] Alcohol meters usually come in packs of 10, namely: (0-10)% vol, (10-20)% vol, (20-30)% vol, (30-40)% vol, (40-50)% vol, (50-60)% vol, (60-70)% vol, (70-80)% vol, (80-90)% vol, (90-100)% vol. When conducting metrological calibration, each alcohol meter must be calibrated at least at three points, namely the first and last two points and any one main scale point in the middle, so it is necessary to replace alcohol solutions of different concentrations.

[0034] In the present embodiment, the disc 11 is made of plastic material, and the disc 11 can float on the calibration alcohol solution. After the standard alcohol meter and the alcohol meter to be tested are installed in the alcohol meter placement hole 4, they can float freely in the calibration alcohol solution. Since the alcohol meter calibration requires placing the standard alcohol meter and the alcohol meter to be tested in the standard solution at the same time, reading their respective values ​​after stabilization, and calculating the indication error. In the actual calibration process, due to the disturbance of the solution during the placement of the alcohol meter, problems such as the two alcohol meters touching each other and the alcohol meters touching the overflow tube wall are often encountered. By setting the alcohol meter placement hole, it is possible to avoid the two alcohol meters from touching each other and the alcohol meters from touching the overflow tube wall, and the plastic disc and the double-layer vacuum stainless steel overflow tube form a small closed environment, which further reduces the measurement error caused by temperature fluctuations.

[0035] In this embodiment, the upper surface of the double-layer vacuum overflow cylinder 2 is higher than the upper surface of the verification and calibration platform, which is convenient for observation through the reading microscope 9. At the same time, the volume of the double-layer vacuum overflow cylinder 2 is larger, ensuring the stability of the temperature of the verification alcohol solution during the verification and calibration process.

[0036] In this embodiment, the double-layer vacuum overflow cylinder 2 is made of stainless steel, and there is a vacuum layer between the two layers of stainless steel to play a role in heat preservation.

[0037] In this embodiment, the temperature sensor adopts a platinum resistance temperature sensor. Three electronic temperature displays are set up, and the three electronic temperature displays are connected to three high-precision platinum resistance sensors evenly distributed on the inner wall of the stainless steel cylinder. This design can not only well reflect the uniformity of the temperature of the calibration standard solution, but also more accurately obtain the actual temperature value of the calibration solution by calculating the average value of the three-point temperature measurement.

[0038] The method of using the novel alcohol meter verification and calibration device provided by the utility model is as follows:

[0039] The device should be placed in a constant temperature and humidity laboratory with a temperature fluctuation of no more than ±2°C. Close the drain pipe, pour the configured alcohol meter calibration solution into the double-layer stainless steel cylinder, place the disc on the liquid surface, adjust the solution level so that it is flush with the overflow pipe mouth, and wait for the temperature to stabilize. Observe the three temperature displays to see if they are consistent, and then read the temperature indication. Place the standard alcohol meter, the alcohol meter to be tested and the two placement holes, and let them stand and wait for stabilization. After the two alcohol meters are stable, read the indications of the two alcohol meters respectively through a reading microscope, calculate the indication error, and calibrate each calibration point twice. After the calibration is completed, open the drain pipe, drain the alcohol solution of this concentration, and pour out the liquid in the overflow tank at the same time. Close the drain pipe, pour in the alcohol solution of the next calibration concentration, and repeat the above steps until all calibrations are completed.

[0040] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A novel alcohol meter calibration device, characterized in that: It comprises a verification and calibration platform, on which a double-layer vacuum overflow cylinder is arranged, in which a verification alcohol solution is contained, and temperature sensors are respectively arranged on the upper part, the middle part and the lower part of the inner wall of the double-layer vacuum overflow cylinder, and the temperature sensors are connected to an electronic temperature display through a wire; a disc is arranged on the top of the double-layer vacuum overflow cylinder, and two alcohol meter placement holes are arranged on the disc, which are respectively used to place a standard alcohol meter and a tested alcohol meter.

2. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: A reading microscope is installed on the upper surface of the verification and calibration platform, and the reading microscope is supported by a bracket.

3. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: An overflow pipe is installed on the upper part of the double-layer vacuum overflow cylinder, and the overflow pipe is connected to the overflow tank.

4. The novel alcohol meter verification and calibration device as claimed in claim 3 is characterized in that: The overflow trough is arranged on the verification and calibration platform, and the overflow trough adopts a pull-out structure.

5. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: A drain pipe is installed at the bottom of the double-layer vacuum overflow cylinder, and the test alcohol solution is drained through the drain pipe.

6. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: The disc is made of plastic material and can float on a test alcohol solution.

7. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: The standard alcohol meter and the alcohol meter to be tested are installed in the alcohol meter placement hole and can float freely in the test alcohol solution.

8. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: The upper surface of the double-layer vacuum overflow cylinder is higher than the upper surface of the verification and calibration platform.

9. The novel alcohol meter calibration device as claimed in claim 1, characterized in that: The double-layer vacuum overflow cylinder is made of stainless steel.

10. The novel alcohol meter verification and calibration device as claimed in claim 1, characterized in that: The temperature sensor is a platinum resistance temperature sensor.

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