A gas flow device for calibrating a gas laminar flow meter

Abstract

This utility model relates to the field of gas flow calibration technology, specifically to a gas flow device for calibrating a laminar flow meter. It includes a gas flow meter body with an inlet and an outlet on opposite sides. The gas flow meter body has two guide grooves and two slots. A first sealing gasket is fixedly installed on the inner wall of both the inlet and outlet. A connector is inserted into both the inlet and outlet. A second sealing gasket is fixedly connected to the outer surface of the connector. An inlet pipe and an outlet pipe are respectively fitted onto the outer surfaces of the two second sealing gaskets. A connecting block is fixedly connected to the outer surface of the connector, and a slot is formed on the outer surface of the connecting block, with a metal sheet embedded in the slot. This application enables rapid installation and positioning of the connector, ensuring the sealing of the connection between the connector and the gas flow meter body. It is simple and convenient to operate, saving time and effort while improving installation efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gas flow calibration technology, and more specifically, to a gas flow device for calibrating a laminar flow meter. Background Technology

[0002] A portable laminar flow mass flow meter is a portable instrument used to measure gas flow rate. It utilizes a laminar flow element to measure gas flow. In laminar flow, gas molecules move relatively regularly, and the pressure drop across the laminar flow element is directly proportional to the gas flow rate. By measuring the pressure difference across the laminar flow element and combining it with parameters such as temperature and pressure, the mass flow rate of the gas can be calculated. It incorporates built-in pressure and temperature sensors. The pressure sensor measures the pressure difference across the laminar flow element, while the temperature sensor measures the gas temperature to provide temperature compensation for the flow measurement results and ensure accuracy. However, existing technologies have the following shortcomings in use:

[0003] The gas flow device has an inlet and an outlet on opposite sides. The gas pipe is usually installed by a connector using a threaded connection. However, installing the connector by threading is cumbersome. If the connector is not tightened properly, gas leakage may occur during gas flow calibration, affecting the calibration results.

[0004] Therefore, there is an urgent need for a gas flow device to calibrate a laminar flow meter to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a gas flow device for calibrating a laminar flow meter. This device solves the problem that gas flow devices typically have inlet and outlet ports on opposite sides, and the gas pipe is usually installed using a threaded connection with a connector. However, installing the connector using a threaded connection is rather cumbersome.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] The application is as follows:

[0008] A gas flow device for calibrating a laminar flow meter includes a gas flow meter body. An inlet and an outlet are respectively opened on opposite sides of the gas flow meter body. The gas flow meter body has two guide grooves and two slots. A first sealing gasket is fixedly installed on the inner wall of both the inlet and outlet. A connector is inserted into both the inlet and outlet. A second sealing gasket is fixedly connected to the outer surface of the connector. An inlet pipe and an outlet pipe are respectively fitted onto the outer surfaces of the two second sealing gaskets. A connecting block is fixedly connected to the outer surface of the connector. A slot is opened on the outer surface of the connecting block. A metal sheet is embedded in the slot. An insert block is inserted into the slot. A fixing block is fixedly connected to the upper end of the insert block. A magnet is embedded in the lower end of the insert block.

[0009] As a preferred technical solution of this application, a third sealing gasket is fixedly connected to the end of the connector away from the second sealing gasket, and the two first sealing gaskets are respectively attached to the two third sealing gaskets.

[0010] As a preferred technical solution of this application, the two guide grooves are respectively connected to the two slots, and the two guide grooves are respectively connected to the air inlet and the air outlet.

[0011] As a preferred technical solution of this application, the outer surfaces of the two connectors are respectively attached to the inner surfaces of the air inlet and the air outlet, and the two connecting blocks are respectively located in the two guide grooves, with the outer surfaces of the connecting blocks attached to the inner surfaces of the guide grooves.

[0012] As a preferred technical solution of this application, the two magnetic pieces are magnetically attracted to the two metal iron pieces respectively, and the two inserts are respectively inserted into the two slots.

[0013] As a preferred technical solution of this application, one side surface of the connector is in contact with the outer surface of the gas flow meter body.

[0014] As a preferred technical solution of this application, both of the fixing blocks are located on the outside of the gas flow meter body.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. By using the guide groove, slot, first sealing gasket, connecting block, card slot, metal sheet, insert block, fixing block and magnetic sheet to cooperate, the connector can be quickly installed and positioned, ensuring the sealing of the connection between the connector and the gas flow meter body. The operation is simple and convenient, saving time and effort while improving installation efficiency.

[0017] 2. By using the second sealing gasket, the air inlet pipe and air outlet pipe can be respectively fitted onto the two connectors to ensure the sealing of the connection, which is convenient for actual use. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a gas flow device for calibrating a laminar flow meter, provided in this application.

[0019] Figure 2 This is a schematic diagram of the gas flow meter body in a gas flow device for calibrating a laminar flow meter provided in this application.

[0020] Figure 3 This is an exploded structural diagram of a gas flow device for calibrating a laminar flow meter, provided in this application.

[0021] Figure 4 for Figure 2 A magnified structural diagram of part A in the middle.

[0022] Figure 5 This is a schematic diagram of the separation structure of the insert block and the connecting block in a gas flow device for calibrating a laminar flow meter provided in this application.

[0023] Figure 6 This application provides a schematic diagram of the connection structure between the insert block and the magnet in a gas flow device for calibrating a laminar flow meter.

[0024] The image shows:

[0025] 1. Gas flow meter body; 2. Inlet; 3. Outlet; 4. Guide groove; 5. Slot; 6. First sealing gasket; 7. Connector; 8. Second sealing gasket; 9. Inlet pipe; 10. Outlet pipe; 11. Connecting block; 12. Slot; 13. Metal sheet; 14. Insert block; 15. Fixing block; 16. Magnet sheet; 17. Third sealing gasket. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0027] In the description of this utility model, it should be noted that the terms "upper" and "lower" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are only used to distinguish the description and should not be construed as indicating or implying relative importance.

[0028] Example:

[0029] like Figure 1-6 As shown, this embodiment proposes a gas flow device for calibrating a laminar flow meter, including a gas flow meter body 1. An inlet 2 and an outlet 3 are respectively provided on opposite sides of the gas flow meter body 1. The gas flow meter body 1 has two guide grooves 4 and two slots 5. First sealing gaskets 6 are fixedly installed on the inner walls of both the inlet 2 and the outlet 3. Connectors 7 are inserted into both the inlet 2 and the outlet 3. One surface of the connector 7 is in contact with the outer surface of the gas flow meter body 1. A second sealing gasket 8 is fixedly connected to the outer surface of the connector 7. The two second sealing gaskets... An air inlet pipe 9 and an air outlet pipe 10 are respectively fitted on the outer surface of the connector 7. A connecting block 11 is fixedly connected to the outer surface of the connector 7. A slot 12 is opened on the outer surface of the connecting block 11. A metal iron sheet 13 is embedded in the slot 12. An insert block 14 is inserted in the slot 12. A fixing block 15 is fixedly connected to the upper end of the insert block 14. Both fixing blocks 15 are located on the outside of the gas flow meter body 1. A magnet 16 is embedded in the lower end of the insert block 14. A third sealing gasket 17 is fixedly connected to the end of the connector 7 away from the second sealing gasket 8. The two first sealing gaskets 6 are respectively attached to the two third sealing gaskets 17.

[0030] First, insert the two connectors 7 into the air inlet 2 and the air outlet 3 respectively, so that the two connecting blocks 11 are located in the two guide grooves 4 respectively, and the two slots 12 are connected to the two slots 5 respectively. When one side surface of the connector 7 is in contact with the outer surface of the gas flow meter body 1, the two first sealing gaskets 6 are in contact with the two third sealing gaskets 17 respectively, realizing the initial positioning of the two connectors 7. Then, insert the two inserts 14 into the two slots 5 respectively through the two fixing blocks 15, and insert the lower ends of the two inserts 14 into the two slots 12 respectively, so that the two magnets are connected to the two slots 12 respectively. 16 is magnetically attracted to two metal iron pieces 13, thereby positioning the two connectors 7 and completing the installation of the two connectors 7. This ensures the sealing of the connection between the connectors 7 and the gas flow meter body 1. The operation is simple and convenient, saving time and effort while improving installation efficiency. Then, the inlet pipe 9 and the outlet pipe 10 are respectively fitted onto the two second sealing gaskets 8. The inner surface of the inlet pipe 9 and the inner surface of the outlet pipe 10 are respectively in contact with the outer surface of the two second sealing gaskets 8, ensuring the sealing between the inlet pipe 9 and the outlet pipe 10 and the connector 7 after installation.

[0031] The model of the gas flow meter body 1 in this application is PIPG-P101. The gas flow meter body 1 is a known prior art, and its working principle and usage method will not be described in detail here.

[0032] like Figure 2 and Figure 4 As shown, the two guide grooves 4 are connected to the two slots 5 respectively, and the two guide grooves 4 are connected to the air inlet 2 and the air outlet 3 respectively. The outer surfaces of the two connectors 7 are respectively attached to the inner surfaces of the air inlet 2 and the air outlet 3. The two connecting blocks 11 are respectively located in the two guide grooves 4, and the outer surface of the connecting block 11 is attached to the inner surface of the guide groove 4. By cooperating with the guide grooves 4, the connectors 7 can be prevented from rotating, which facilitates the subsequent fixing of the connectors 7.

[0033] like Figure 3 , Figure 5 and Figure 6 As shown, two magnetic pieces 16 are magnetically attracted to two metal pieces 13 respectively, and two insert blocks 14 are inserted into two slots 5 respectively. The two magnetic pieces 16 are magnetically attracted to two metal pieces 13 respectively, thereby enabling the positioning of the two connectors 7 and completing the installation of the two connectors 7.

[0034] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A gas flow device for calibrating a gas laminar flow meter, characterized by: The device includes a gas flow meter body (1), with an inlet (2) and an outlet (3) respectively opened on opposite sides of the gas flow meter body (1). The gas flow meter body (1) has two guide grooves (4) and two slots (5). A first sealing gasket (6) is fixedly installed on the inner wall of the inlet (2) and the inner wall of the outlet (3). A connector (7) is inserted into the inlet (2) and the outlet (3). A second sealing gasket (8) is fixedly connected to the outer surface of the connector (7). An air inlet pipe (9) and an air outlet pipe (10) are respectively fitted on the outer surfaces of the two second sealing gaskets (8). A connecting block (11) is fixedly connected to the outer surface of the connector (7). A slot (12) is opened on the outer surface of the connecting block (11). A metal sheet (13) is embedded in the slot (12). An insert block (14) is inserted into the slot (12). A fixing block (15) is fixedly connected to the upper end of the insert block (14). A magnet (16) is embedded in the lower end of the insert block (14).

2. The gas flow device for calibrating a laminar flow meter according to claim 1, characterized in that, The connector (7) is fixedly connected to a third sealing gasket (17) at the end away from the second sealing gasket (8), and the two first sealing gaskets (6) are respectively attached to the two third sealing gaskets (17).

3. The gas flow device for calibrating a laminar flow meter according to claim 1, characterized in that, The two guide grooves (4) are respectively connected to the two slots (5), and the two guide grooves (4) are respectively connected to the air inlet (2) and the air outlet (3).

4. The gas flow device for calibrating a laminar flow meter according to claim 1, characterized in that, The outer surfaces of the two connectors (7) are respectively attached to the inner surfaces of the air inlet (2) and the air outlet (3), and the two connecting blocks (11) are respectively located in the two guide grooves (4), and the outer surface of the connecting block (11) is attached to the inner surface of the guide groove (4).

5. A gas flow device for calibrating a gas laminar flow meter according to claim 1, wherein, The two magnetic pieces (16) are magnetically attracted to the two metal pieces (13) respectively, and the two inserts (14) are inserted into the two slots (5) respectively.

6. A gas flow device for calibrating a gas laminar flow meter according to claim 1, wherein, One side surface of the connector (7) is in contact with the outer surface of the gas flow meter body (1).

7. A gas flow device for calibrating a gas laminar flow meter according to claim 1, wherein, Both of the fixing blocks (15) are located outside the gas flow meter body (1).

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