Calibration device for wet gas flow meters

Abstract

This utility model belongs to the field of calibration technology, specifically relating to a calibration device for a wet gas flow meter. The calibration device for the wet gas flow meter includes: a container bottle having an air inlet and a liquid outlet, the air inlet being located at the top of the container bottle and the liquid outlet at the bottom of the container bottle; a first connecting pipe, one end of which is connected to the container bottle through the air inlet, and the other end of which is connected to the air outlet of the wet gas flow meter; a second connecting pipe connected to the liquid outlet; and a metering bottle connected to the second connecting pipe.

Description

Technical Field

[0001] This application belongs to the field of calibration technology, specifically relating to a calibration device for a wet gas flow meter. Background Technology

[0002] A wet gas flow meter is an instrument used to measure the volumetric flow rate of gas. Its core feature is that it uses a liquid (usually water or other media) as a sealing and metering medium, utilizing the principle of gas pushing the liquid to achieve flow measurement. However, during long-term use, the metering accuracy of a wet gas flow meter cannot be guaranteed to remain within the allowable range, therefore, it needs to be calibrated periodically.

[0003] Wet gas flow meters require calibration every time the sealing fluid is changed (every 3 months), resulting in frequent calibrations. Currently, calibration of wet gas flow meters necessitates sending them to a third-party verification and calibration unit. During transportation, the accuracy of the wet gas flow meter cannot be guaranteed, and this process also incurs significant costs in terms of manpower, financial resources, and time. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a calibration device for a wet gas flow meter, which aims to at least partially solve the technical problem that the calibration of a wet gas flow meter requires sending it to a third-party verification and calibration unit.

[0005] The technical solution of this utility model is as follows:

[0006] A calibration device for a wet gas flow meter includes: a container bottle having an air inlet and a liquid outlet, the air inlet being located at the top of the container bottle and the liquid outlet being located at the bottom of the container bottle; a first connecting pipe, one end of which is connected to the container bottle through the air inlet and the other end of which is connected to the air outlet of the wet gas flow meter; a second connecting pipe connected to the liquid outlet; and a metering bottle connected to the second connecting pipe.

[0007] In some implementations, the metering bottle is positioned below the center of the outlet.

[0008] In some implementations, a first valve is provided on the second connecting pipe.

[0009] In some embodiments, the container includes: a bottle body having the air inlet and the liquid outlet; a seal disposed at the air inlet; wherein the first connecting pipe passes through the seal and communicates with the bottle body.

[0010] In some embodiments, the container further includes a seal detection component that communicates with the container through the air inlet.

[0011] In some embodiments, the seal detection assembly includes: a third connecting pipe connected to the container via the air inlet; and a liquid extraction component connected to the third connecting pipe and located outside the container.

[0012] In some implementations, a second valve is provided on the third connecting pipe, and the second valve is located outside the container.

[0013] In some implementations, the measuring bottle is provided with graduations.

[0014] In some embodiments, the calibration device for the wet gas flow meter further includes: a first pressure gauge disposed on the wet gas flow meter; a first thermometer disposed on the wet gas flow meter; a second pressure gauge disposed on the container; and a second thermometer disposed on the container.

[0015] In some embodiments, the calibration device for the wet gas flow meter further includes a level for supporting the wet gas flow meter.

[0016] The beneficial effects of this utility model include at least the following:

[0017] Because the container has an air inlet and a liquid outlet, with the air inlet located at the top and the liquid outlet at the bottom, a first connecting pipe connects one end to the container via the air inlet and the other end to the outlet of the wet gas flow meter. A second connecting pipe connects to the liquid outlet, and the metering bottle is connected to the second connecting pipe. Therefore, the container contains pure water. When the pointer of the wet gas flow meter is adjusted to 0, and the flow meter is being calibrated, the pure water in the container flows into the metering bottle through the liquid outlet. At this time, a negative pressure is created in the container, allowing the gas to pass through the wet gas flow meter. The outlet of the volumetric flow meter and the second connecting pipe enter the receiving bottle. When the water volume in the volumetric bottle rises to the standard scale, the pointer reading of the wet gas flow meter and the volume of pure water received by the standard volumetric bottle are recorded. The pointer reading of the wet gas flow meter and the volume of pure water received by the standard volumetric bottle are compared to calibrate the wet gas flow meter. The structure is simple and easy to operate, and the wet gas flow meter can be calibrated in the laboratory without sending it to a third-party verification and calibration agency. This ensures the accuracy of the wet gas flow meter and reduces the consumption of manpower, financial resources and time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the calibration device for the wet gas flow meter in this embodiment.

[0020] In the attached image:

[0021] Container 10, bottle body 11, sealing element 12;

[0022] First connecting pipe 20;

[0023] Second connecting pipe 30;

[0024] Measuring bottle 40;

[0025] 50 wet gas flow meter;

[0026] First valve 60;

[0027] Sealing detection assembly 70, third connecting pipe 71, liquid extraction component 72, second valve 73;

[0028] First pressure gauge 80;

[0029] The first thermometer reads 90. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] It should be noted that all directional indications in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0032] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0033] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0034] This application is described below with reference to the accompanying drawings and specific embodiments:

[0035] The calibration device for a wet gas flow meter provided in this embodiment aims to at least partially solve the technical problem that the calibration of a wet gas flow meter requires sending it to a third-party verification and calibration unit.

[0036] Figure 1 This is a schematic diagram of the calibration device for the wet gas flow meter in this embodiment. (Combined with...) Figure 1 The calibration device for the wet gas flow meter according to this application embodiment includes: a container bottle 10, a first connecting pipe 20, a second connecting pipe 30, and a metering bottle 40. The container bottle 10 has an air inlet and a liquid outlet; the air inlet is located at the top of the container bottle 10, and the liquid outlet is located at the bottom of the container bottle 10. One end of the first connecting pipe 20 is connected to the container bottle 10 through the air inlet, and the other end is connected to the air outlet of the wet gas flow meter 50. The second connecting pipe 30 is connected to the liquid outlet. The metering bottle 40 is connected to the second connecting pipe 30.

[0037] Bottle 10 can be a bottom-mouthed bottle.

[0038] Because the container 10 has an air inlet and a liquid outlet, with the air inlet located at the top and the liquid outlet at the bottom, one end of the first connecting pipe 20 is connected to the container 10 via the air inlet, and the other end is connected to the air outlet of the wet gas flow meter 50. The second connecting pipe 30 is connected to the liquid outlet, and the metering bottle 40 is connected to the second connecting pipe 30. Therefore, the container 10 contains pure water. When the pointer of the wet gas flow meter 50 is adjusted to 0, and the wet gas flow meter 50 is to be calibrated, the pure water in the container 10 flows into the metering bottle 40 through the liquid outlet. At this time, a negative pressure is formed in the container 10, so that... Gas enters the container bottle 10 through the outlet of the wet gas flow meter 50 and the second connecting pipe 20. When the water volume in the container bottle reaches the standard mark, the pointer reading of the wet gas flow meter 50 and the volume of pure water received by the standard container bottle are recorded. The pointer reading of the wet gas flow meter 50 and the volume of pure water received by the standard container bottle are compared to calibrate the wet gas flow meter 50. The structure is simple and easy to operate, and the wet gas flow meter 50 can be calibrated in the laboratory without sending it to a third-party verification and calibration agency. This ensures the accuracy of the wet gas flow meter 50 and reduces the consumption of manpower, financial resources and time.

[0039] Combination Figure 1 In some embodiments, in order to allow the pure water in the container bottle 10 to flow into the metering bottle 40, the metering bottle 40 is positioned below the center of the outlet. Under the influence of gravity, the pure water in the container bottle 10 can flow into the metering bottle 40 without the need for external equipment to extract it, thus ensuring the accuracy of the calibration of the wet gas flow meter 50.

[0040] Combination Figure 1 In some embodiments, in order to control the opening and closing of the second connecting pipe 30, a first valve 60 is provided on the second connecting pipe 30. When the wet gas flow meter 50 is to be calibrated, the first valve 60 is operated to open the second connecting pipe 30 so that the pure water in the container bottle 10 can flow into the metering bottle 40 through the second connecting pipe 30.

[0041] Combination Figure 1 In some embodiments, to ensure the accuracy of the calibration of the wet gas flow meter 50, the container 10 includes a bottle body 11 and a sealing element 12. The bottle body 11 has an air inlet and a liquid outlet. The sealing element 12 is disposed at the air inlet. A first connecting pipe 20 passes through the sealing element 12 and communicates with the bottle body 11, sealing the air inlet to prevent gas leakage into the bottle body 11 after passing through the wet gas flow meter 50. The sealing element 12 can be a rubber stopper.

[0042] Specifically, the bottle body 11 has an air inlet and a liquid outlet, with the air inlet located at the top of the bottle body 11 and the liquid outlet located at the bottom of the bottle body 11.

[0043] Combination Figure 1 In some embodiments, to check the airtightness of the container 10, the container 10 further includes a sealing detection component 70. The sealing detection component 70 is connected to the container 10 through an air inlet. The sealing detection component 70 checks the airtightness of the container 10 to ensure the sealing of the container 10, prevent gas leakage into the bottle body 11 through the wet gas flow meter 50, and ensure the accuracy of the calibration of the wet gas flow meter 50.

[0044] Combination Figure 1 In some embodiments, to check the airtightness of the container 10, the seal detection assembly includes a third connecting pipe 71 and a liquid extraction component 72. The third connecting pipe 71 is connected to the container 10 through an air inlet. The liquid extraction component 72 is connected to the third connecting pipe 71 and is located outside the container 10. The third connecting pipe 71 passes through the seal 12 and is connected to the bottle body 11.

[0045] Before calibrating the wet gas flow meter 50, the pumping unit 72 draws pure water from the container bottle 10 into the third connecting pipe 71, so that the pure water is kept at a certain level in the third connecting pipe 71. Then, the pumping unit 72 is turned off, and the liquid level in the third connecting pipe 71 is observed for 5 minutes. If the liquid level does not change, it proves that the container bottle 10 is well sealed.

[0046] Combination Figure 1 In some embodiments, in order to control the opening and closing of the third connecting pipe 71, a second valve 73 is provided on the third connecting pipe 71, and the second valve 73 is located outside the container bottle 10.

[0047] Before calibrating the wet gas flow meter 50, operate the second valve 73 to open the third connecting pipe 71. The liquid extraction component 72 draws pure water from the container bottle 10 into the third connecting pipe 71, maintaining a certain liquid level in the third connecting pipe 71. Then, close the liquid extraction component 72 and operate the second valve 73 to close the third connecting pipe 71. Observe the liquid level in the third connecting pipe 71 for 5 minutes. If there is no change in the liquid level, it proves that the container bottle 10 has good sealing performance.

[0048] In some embodiments, in order to obtain the volume of pure water entering the measuring bottle 40, the measuring bottle 40 is provided with a scale, which allows the volume of pure water entering the measuring bottle 40 to be obtained intuitively, which is convenient and quick.

[0049] Combination Figure 1In some embodiments, to obtain the calibration coefficient of the wet gas flow meter 50, the calibration device for the wet gas flow meter 50 further includes: a first pressure gauge 80, a first thermometer 90, a second pressure gauge, and a second thermometer. The first pressure gauge 80 is disposed in the wet gas flow meter 50 and is used to detect the absolute pressure of the gas passing through the wet gas flow meter 50. The first thermometer 90 is disposed in the wet gas flow meter 50 and is used to detect the thermodynamic temperature of the gas passing through the wet gas flow meter 50. The second pressure gauge is disposed in the container 10 and is used to detect the absolute pressure of the gas entering the container 10. The second thermometer is disposed in the container 10 and is used to detect the thermodynamic temperature of the gas entering the container 10. Both the first and second pressure gauges can be U-shaped pressure gauges.

[0050] When calibrating the wet gas flow meter 50, the first pressure gauge 80 detects the absolute pressure of the gas passing through the wet gas flow meter 50 and obtains parameter P1 (in Pa). The first thermometer 90 detects the thermodynamic temperature of the gas passing through the wet gas flow meter 50 and obtains parameter T1 (in K). The second pressure gauge detects the absolute pressure of the gas entering the container bottle 10 and obtains parameter P2 (in Pa). The second thermometer detects the thermodynamic temperature of the gas entering the container bottle 10 and obtains parameter T2 (in K). The actual volume of gas passing through the wet gas flow meter 50 is obtained according to the following formula:

[0051]

[0052] Wherein, V is the volume of pure water received by the metering bottle 40 into the container bottle 10, in liters (L).

[0053] The formula for the correction factor is:

[0054]

[0055] Where f is the correction coefficient of the wet gas flow meter 50, V1 is the reading of the wet gas flow meter 50 in L, and V0 is the actual volume of gas passing through the wet gas flow meter 50.

[0056] When using the wet gas flow meter 50, the reading of the wet gas flow meter 50 is V2, and the product of V2 and f is the actual gas volume V3 passing through the wet gas flow meter 50.

[0057] In some embodiments, to ensure the calibration accuracy of the wet gas flow meter 50, the calibration device for the wet gas flow meter 50 further includes a level. The level is located at the top of the wet gas flow meter 50.

[0058] The wet gas flow meter 50 has height-adjustable feet at the bottom. By placing a level on top of the wet gas flow meter 50 and adjusting the height-adjustable feet of the wet gas flow meter 50 with the level, the wet gas flow meter 50 can be kept in a horizontal position to ensure the calibration accuracy of the wet gas flow meter 50.

[0059] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0060] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0061] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0062] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0063] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0064] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A calibration device for a wet gas flowmeter, characterized by, include: A container bottle has an air inlet and a liquid outlet, wherein the air inlet is located at the top of the container bottle and the liquid outlet is located at the bottom of the container bottle; The first connecting pipe has one end connected to the container bottle through the air inlet and the other end connected to the outlet of the wet gas flow meter. The second connecting pipe is connected to the liquid outlet; The measuring bottle is connected to the second connecting pipe.

2. The calibration device for a wet gas flowmeter according to claim 1, wherein The metering bottle is located below the center of the liquid outlet.

3. The calibration device for a wet gas flowmeter according to claim 1, wherein A first valve is installed on the second connecting pipe.

4. The calibration device for a wet gas flowmeter according to any one of claims 1 to 3, characterized in that, The container bottle includes: The bottle body has the air inlet and the liquid outlet; A sealing element is provided at the air inlet; The first connecting pipe passes through the seal and connects to the bottle body.

5. The calibration device for a wet gas flowmeter according to any one of claims 1 to 3, characterized in that The container also includes: The sealing detection component is connected to the container bottle through the air inlet.

6. The calibration device for a wet gas flow meter according to claim 5, characterized in that, The sealing detection component includes: The third connecting pipe is connected to the container bottle through the air inlet; The liquid extraction component is connected to the third connecting pipe and is located outside the container bottle.

7. The calibration device for a wet gas flowmeter according to claim 6, wherein A second valve is provided on the third connecting pipe, and the second valve is located outside the container bottle.

8. The calibration device for a wet gas flowmeter according to any one of claims 1 to 3, characterized in that The measuring bottle is marked with graduations.

9. The calibration device for a wet gas flowmeter according to any one of claims 1 to 3, characterized in that, The calibration device for the wet gas flow meter also includes: A first pressure gauge is installed in the wet gas flow meter; A first thermometer is installed in the wet gas flow meter; A second pressure gauge is installed in the container; A second thermometer is installed in the container.

10. The calibration device for a wet gas flowmeter according to any one of claims 1 to 3, characterized in that, The calibration device for the wet gas flow meter also includes: A level is located at the top of the wet gas flow meter.

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