Flow sensor testing device

Abstract

The utility model belongs to the technical field of flow detection, and particularly relates to a flow sensor testing device which comprises an air source generating part and a detecting part. The air source generation part is formed by connecting an air compressor, an air storage tank and a drying machine through a pipeline I and a pipeline II respectively; the air outlet end of the drying machine is connected with a pipeline III; and the detection part comprises a valve I, a reference meter, a test meter / standard meter and a valve II which are sequentially arranged on the pipeline III. According to the utility model, the test meter and the standard meter are installed at the same position, so that the test conditions are relatively consistent, and the detection accuracy is improved; special equipment such as a rear-stage storage tank, a thermometer and a pressure gauge is omitted, the input cost and the maintenance cost are greatly reduced, the operation is convenient, and the efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of flow detection, in particular to a flow sensor testing device. Background Technique

[0002] After the existing flow sensors are produced, their accuracy needs to be detected. However, for the existing flow sensor testing devices, as Figure 1 shown, three valves need to be operated during the testing process of this testing device. During the testing process, the air pressure in the rear air storage tank and the front air pressure will reach equilibrium. At this time, the gas in the rear air storage tank needs to be released to relieve the pressure, and the pressure difference between the front and rear air storage tanks needs to be maintained. This process is repeated, resulting in low detection efficiency. The installation positions of the standard meter and the test meter are different, resulting in large errors. Two pressure gauges and one thermometer need to be equipped, and they are special equipment, resulting in high purchase costs and maintenance costs. Therefore, it is necessary to develop a flow sensor testing device. Content of the Utility Model

[0003] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0004] To solve the above technical problems, according to one aspect of the utility model, the following technical solutions are provided:

[0005] A flow sensor testing device, which includes an air source generating part and a detection part;

[0006] The air source generating part is formed by connecting an air compressor, an air storage tank, and a dryer through pipeline one and pipeline two respectively;

[0007] The air outlet end of the dryer is connected with pipeline three;

[0008] The detection part includes a valve one, a reference meter, a test meter / standard meter, and a valve two arranged in sequence on pipeline three.

[0009] As a preferred scheme of a flow sensor testing device according to the utility model, wherein: a ball valve is arranged on pipeline one.

[0010] As a preferred scheme of a flow sensor testing device according to the utility model, wherein: a filter is arranged on pipeline two.

[0011] As a preferred scheme of a flow sensor testing device according to the utility model, wherein: only one of the test meter and the standard meter is installed on pipeline three.

[0012] As a preferred solution of a flow sensor testing device according to the present utility model, wherein: an installation pipe is communicatively provided on the third pipe, a first flange is provided on the installation pipe, and second flanges for installing the first flange are respectively provided on the test meter and the standard meter.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows: the test meter and the standard meter are installed at the same position, the test conditions are relatively consistent, and the detection accuracy is improved; special devices such as a post-stage storage tank, a thermometer, and a pressure gauge are omitted, and the input cost and maintenance cost are greatly reduced, and the operation is convenient and the efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the present utility model will be described in detail below with reference to the drawings and specific embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts. Among them:

[0015] Figure 1 is a structural schematic diagram of the existing testing device;

[0016] Figure 2 is a structural schematic diagram of the present utility model;

[0017] Figure 3 is of the present utility model Figure 2 structural schematic diagram after disassembling the test meter and installing the standard meter.

[0018] Figure 1 Among them: 1 - air source generating part; 2 - detection part; 3 - post-stage storage part; 11 - air compressor; 12 - first storage tank; 13 - dryer; 21 - pressure reducing valve; 22 - first pressure gauge; 23 - first valve; 24 - thermometer; 25 - test meter; 26 - standard meter; 27 - second valve; 28 - second pressure gauge; 29 - third valve.

[0019] Figure 2 and Figure 3 Among them: 1 - air source generating part; 11 - air compressor; 12 - storage tank; 13 - dryer; 14 - first pipe; 15 - second pipe; 16 - ball valve; 17 - filter; 18 - third pipe; 2 - detection part; 21 - valve; 22 - reference meter; 23 - standard meter; 24 - test meter; 25 - valve; 26 - installation pipe; 27 - first flange; 28 - second flange. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] In order to make the above-mentioned objects, features, and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings.

[0021] In the following description, many specific details are set forth in order to provide a thorough understanding of the present utility model. However, the present utility model may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementation manners disclosed below.

[0022] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the implementation manners of the present utility model, for the sake of convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally out of the general proportion, and the schematic diagrams are only examples and should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0023] In order to make the purpose, technical solution, and advantages of the present utility model clearer, the following will further describe in detail the implementation manners of the present utility model with reference to the accompanying drawings.

[0024] Please refer to Figures 2 - 3 , which shows a schematic structural diagram of an embodiment of a flow sensor testing device of the present utility model. Please refer to Figures 2 - 3 , and a detailed introduction to a flow sensor testing device will be given.

[0025] A flow sensor testing device includes an air source generating part 1 and a detection part 2;

[0026] The air source generating part 1 is formed by connecting an air compressor 11, a gas storage tank 12, and a dryer 13 through a first pipeline 14 and a second pipeline 15 respectively. A ball valve 16 is provided on the first pipeline 14, and a filter 17 is provided on the second pipeline 15;

[0027] The air outlet end of the dryer 13 is connected to a third pipeline 18;

[0028] The detection part 2 includes a first valve 21, a reference meter 22, a test meter 24 / standard meter 23, and a second valve 25 that are sequentially arranged on the third pipeline 18. Only one of the test meter 24 and the standard meter 23 is installed on the third pipeline 18. An installation pipe 26 is communicatively provided on the third pipeline 18. A first flange 27 is provided on the installation pipe 26. Second flanges 28 for installing the first flange 27 are respectively provided on the test meter 24 and the standard meter 23.

[0029] During the specific usage process, first install the test meter 24. During the test, valve 1 21 is closed and valve 2 25 is opened. The air source part continuously delivers gas with a pressure of 750 KPa to 1 MPa. The impurities and moisture are filtered out by the filter 17 and the dryer 13 and enter the pipeline 3 18 in the test part. The air flow is delivered by slowly increasing the opening degree of valve 1 21 until the maximum range of the reference meter, which is 20 mA, is reached. When the reference meter 22 is at the following flow values: 7 mA, 8 mA, 9 mA, 10 mA, 11 mA, 12 mA, 13 mA, 14 mA, 15 mA, 16 mA, 17 mA, 18 mA, 19 mA, record the flow values corresponding to the test meter 24 respectively.

[0030] Then remove the test meter 24 and install the standard meter 23. During the test, valve 1 21 is closed and valve 2 25 is opened. The air source part continuously delivers gas with a pressure of 750 KPa to 1 MPa. The moisture and impurities are filtered out by the dryer 13 and enter the pipeline 3 18 in the test part. The air flow is delivered by slowly increasing the opening degree of valve 1 21 until the maximum range of the reference meter, which is 20 mA, is reached. When the reference meter 22 is at the following flow values: 7 mA, 8 mA, 9 mA, 10 mA, 11 mA, 12 mA, 13 mA, 14 mA, 15 mA, 16 mA, 17 mA, 18 mA, 19 mA, record the flow values corresponding to the standard meter 23.

[0031] By comparing the data of the test meter 24 with the data of the standard meter 23, the accuracy error between the test meter 24 and the standard meter 23 can be accurately detected.

[0032] Although the present invention has been described with reference to the embodiments above, various improvements can be made to it and its components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present invention can be combined with each other in any way. The reason for not exhaustively describing the situations of these combinations in this specification is only to save space and resources. Therefore, the present invention is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A flow sensor testing device, characterized in that: It comprises a gas source generating part (1) and a detecting part (2); The gas source generating part (1) is composed of an air compressor (11), a gas storage tank (12), and a dryer (13) which are connected through a pipeline 1 (14) and a pipeline 2 (15) respectively; The air outlet end of the dryer (13) is connected to a pipeline three (18); The detection part (2) comprises a valve one (21), a reference meter (22), a test meter (24) / standard meter (23), and a valve two (25) which are sequentially arranged on a pipeline three (18).

2. A flow sensor testing device according to claim 1, characterized in that: A ball valve (16) is provided on the pipeline one (14).

3. A flow sensor testing device according to claim 1, characterized in that: The second pipeline (15) is provided with a filter (17).

4. A flow sensor testing device according to claim 1, characterized in that: One and only one of the test meter (24) and the standard meter (23) is installed on the pipeline three (18).

5. A flow sensor testing device according to claim 4, characterized in that: The pipeline three (18) is connected to a mounting pipe (26), the mounting pipe (26) is provided with a flange plate one (27), and the test table (24) and the standard table (23) are respectively provided with flange plates two (28) for mounting the flange plate one (27).

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