Mass flow meter with joint leakage-proof structure

Abstract

The mass flowmeter comprises a flowmeter body, connecting pipes are communicated with the two sides of the flowmeter body, connecting flanges are fixed to the surfaces of the connecting pipes, inner grooves are formed in the surfaces of the connecting flanges, and the inner grooves are communicated with the connecting pipes. A first sealing gasket is fixedly embedded in the surface, located above the inner groove, of the connecting flange, two mounting grooves are formed in the surface of the connecting flange, a first spring is fixed to the inner wall of the lower mounting groove, a first limiting plate is fixed to the surface of the first spring, and an air bag and a second sealing gasket are slidably connected to the inner wall of the upper mounting groove; a glue injection groove and a glue injection opening are formed in the surface of the connecting flange, a plurality of L-shaped plates are fixed to the surface of the connecting pipe, and combined plates are detachably connected to the surfaces of the L-shaped plates. The mass flow meter has the advantages of being capable of conducting sealing protection on the flange connecting position and improving the anti-leakage effect, and the problem that when an existing mass flow meter is used, loosening and leakage are prone to occurring at the flange connecting position is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of mass flowmeters, in particular to a mass flowmeter with a connection anti-leakage structure. Background Art

[0002] A flow meter is an instrument that indicates the measured flow rate and determines the total amount of fluid in a selected time interval. The substances flowing through can be gases, liquids and solids. In industry and daily life, a common method of fluid measurement and control is a glass, metal and plastic rotor flowmeter with a control valve. The rotor flowmeter, also known as a float flowmeter, consists of a conical tube and a rotor placed in the conical tube that can move freely up and down. The two ends of the rotor flowmeter body are connected to the measuring pipe with flanges, threads or hoses and are installed vertically on the measuring pipe.

[0003] Since the mass flow meter needs to measure the material flowing through it, the internal structure used for measurement is likely to cause a certain obstruction to the internal pipeline, thereby causing a certain pressure in the internal pipeline. Since the internal pipeline is short, its pressure is easily transmitted to its connecting flange, causing the material flowing through the interior to leak from the connecting flange. In order to avoid this situation, it is necessary to propose a mass flow meter with a leakage-proof structure at the connection. Utility Model Content

[0004] The utility model aims to provide a mass flow meter with a connection anti-leakage structure, which has the advantages of being able to seal and protect the flange connection and improve the anti-leakage effect, thereby solving the problem that the connection flange of the current mass flow meter is prone to loosening and leakage when in use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a mass flow meter with a leakage-proof structure at a connection, comprising a flow meter body, connecting pipes are connected on both sides of the flow meter body, a connecting flange is fixed on the surface of the connecting pipe, an inner groove is provided on the surface of the connecting flange, a first sealing gasket is embedded and fixed on the surface of the connecting flange located above the inner groove, two mounting grooves are provided on the surface of the connecting flange, a first spring is fixed on the inner wall of the lower mounting groove, a first limit plate is fixed on the surface of the first spring, an airbag and a second sealing gasket are slidably connected to the inner wall of the upper mounting groove, a glue injection groove and a glue injection port are provided on the surface of the connecting flange, a plurality of L-shaped plates are fixed on the surface of the connecting pipe, a combination plate is detachably connected to the surface of the L-shaped plate, a second spring is fixed on the surface of the combination plate, a second limit plate is fixed on the surface of the second spring, a closing shell is provided on the upper and lower sides of the connecting pipe surface, and a clamping plate is fixed on the surface of the closing shell.

[0006] As a preferred mass flow meter with a connection anti-leakage structure of the utility model, the surface of the second sealing gasket is slidably connected with a blocking plate, and the blocking plate is fixedly connected to the inner wall of the upper mounting groove.

[0007] As a preferred mass flow meter with a connection anti-leakage structure of the utility model, threaded holes are provided on the surfaces of the combined plate and the L-shaped plate, and the combined plate and the L-shaped plate are detachably connected by bolts through the threaded holes.

[0008] As a preferred mass flow meter with a connection anti-leakage structure of the utility model, a gas nozzle is fixed on the surface of the connection flange, and the surface of the gas nozzle is connected to the inside of the airbag through a pipeline.

[0009] As a preferred embodiment of the mass flowmeter with a connection anti-leakage structure of the utility model, an expansion portion is provided on the surface of the combination plate near the threaded hole.

[0010] As a preferred mass flow meter with a connection anti-leakage structure of the utility model, an observation window is embedded and fixed on the surface of the closed shell, and the observation window is made of transparent material.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] In the utility model, after the connecting flange and the external flange are connected with each other and fixed by bolts, the first sealing gasket will contact with the bulge on the surface of the external flange, and the first sealing gasket can provide a preliminary sealing effect between the two flanges. At the same time, the first limiting plate will contact with the surface of the external flange and compress the first spring, and the first spring can make the surface of the first limiting plate fit closely with the surface of the external flange through its own elastic force, thereby improving the sealing of the contact surfaces of the two flanges. The inside of the airbag can be filled with compressed gas, so that the airbag can expand, thereby pushing the second sealing gasket to move toward the surface of the external flange, so that the surface of the second sealing gasket can also fit closely with the surface of the external flange, thereby further improving The sealing between the contact surfaces of the two is improved, and the sealant is injected into the glue injection groove through the glue injection port, so that the medium in the connecting pipe is not easy to overflow outward through the glue injection groove and the contact surface of the two flanges. After the combined plate is fixed to the surface of the L-shaped plate, the second spring will exert elastic force to make the surface of the second limit plate fit tightly to the external flange, so as to ensure that the two flanges are not easy to loosen. The upper and lower closing shells can be fixed with bolts through the clamping plate and the combination hole, and the inner wall of the closing shell can fit with the L-shaped plate and the surface of the combined plate, so as to further avoid loosening between the two flanges. At the same time, the closing shell can also block the leaked medium, so that the leaked medium is not easy to flow out of the closing shell and pollute the external environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a cross-sectional three-dimensional structural schematic diagram of the utility model;

[0015] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0016] Figure 4 It is a schematic diagram of the partial split structure of the utility model;

[0017] Figure 5 For this utility model Figure 3 A in the figure is an enlarged structural diagram.

[0018] In the figure: 1. flow meter body; 2. connecting pipe; 3. connecting flange; 4. first sealing gasket; 5. first spring; 6. first limit plate; 7. air bag; 8. second sealing gasket; 9. air nozzle; 10. glue injection groove; 11. glue injection port; 12. L-shaped plate; 13. combination plate; 14. second spring; 15. second limit plate; 16. threaded hole; 17. closing shell; 18. clamping plate; 19. blocking plate; 20. observation window. DETAILED DESCRIPTION

[0019] See also Figure 1-5 A mass flow meter with a connection anti-leakage structure comprises a flow meter body 1, both sides of the flow meter body 1 are connected with a connection pipe 2, a connection flange 3 is fixed on the surface of the connection pipe 2, an inner groove is provided on the surface of the connection flange 3, a first sealing gasket 4 is embedded and fixed on the surface of the connection flange 3 located above the inner groove, two mounting grooves are provided on the surface of the connection flange 3, a first spring 5 is fixed on the inner wall of the lower mounting groove, a first limiting plate 6 is fixed on the surface of the first spring 5, an air bag 7 and a second sealing gasket 8 are slidably connected to the inner wall of the upper mounting groove, and the surface of the connection flange 3 is provided with a first spring 5, a first spring 5 is fixed on the surface of the first spring 5, an air bag 7 and a second sealing gasket 8 are slidably connected to the inner wall of the upper mounting groove, and a first spring 5 is fixed on the inner wall of the upper mounting groove. A glue injection groove 10 and a glue injection port 11 are provided, and the glue injection port 11 is communicated with the glue injection groove 10. A plurality of L-shaped plates 12 are fixed on the surface of the connecting pipe 2, and a combination plate 13 is detachably connected to the surface of the L-shaped plate 12. A second spring 14 is fixed to the surface of the combination plate 13, and a second limit plate 15 is fixed to the surface of the second spring 14. A closed shell 17 is provided on both upper and lower sides of the surface of the connecting pipe 2, and a clamping plate 18 is fixed to the surface of the closed shell 17. A combination hole is opened on the surface of the clamping plate 18, and the closed shells 17 on the upper and lower sides are detachably connected by bolts through the combination holes on the surface of the clamping plate 18;

[0020] After the connecting flange 3 and the external flange are connected and fixed by bolts, the first sealing gasket 4 will contact the protrusion on the surface of the external flange, and the first sealing gasket 4 can provide a preliminary sealing effect between the two flanges. At the same time, the first limiting plate 6 will contact the surface of the external flange and compress the first spring 5, and the first spring 5 can make the surface of the first limiting plate 6 fit tightly with the surface of the external flange through its own elastic force, thereby improving the sealing of the contact surfaces of the two flanges. The inside of the airbag 7 can be filled with compressed gas, so that the airbag 7 can expand, thereby pushing the second sealing gasket 8 to move toward the surface of the external flange, so that the surface of the second sealing gasket 8 can also fit tightly with the surface of the external flange, thereby further improving the sealing between the contact surfaces of the two. The inside of the glue injection groove 10 can be injected with sealant through the glue injection port 11, so that the medium in the connecting pipe 2 is not easy to overflow outward through the glue injection groove 10 and the contact surface of the two flanges. After the combination plate 13 is fixed to the surface of the L-shaped plate 12, the second spring 14 will apply elastic force to make the surface of the second limit plate 15 fit tightly to the external flange, so as to ensure that the two flanges are not easy to loosen. The upper and lower closed shells 17 can be fixed with bolts through the clamping plate 18 and the combination hole, and the inner wall of the closed shell 17 can fit with the surface of the L-shaped plate 12 and the combination plate 13, so as to further avoid loosening between the two flanges. At the same time, the closed shell 17 can also block the leaked medium, so that the leaked medium is not easy to flow out of the closed shell 17 and pollute the external environment.

[0021] Furthermore, a blocking plate 19 is slidably connected to the surface of the second sealing gasket 8, and the blocking plate 19 is fixedly connected to the inner wall of the upper mounting groove;

[0022] The blocking plate 19 can block the second sealing gasket 8 to prevent the second sealing gasket 8 from being separated from the upper mounting groove.

[0023] Furthermore, threaded holes 16 are provided on the surfaces of the combined plate 13 and the L-shaped plate 12, and the combined plate 13 and the L-shaped plate 12 are detachably connected by bolts through the threaded holes 16;

[0024] With this design, after the connecting flange 3 is connected to the external flange, the combined plate 13 can be combined with the L-shaped plate 12 by using bolts through the threaded holes 16 .

[0025] Furthermore, a gas nozzle 9 is fixed on the surface of the connecting flange 3, and the surface of the gas nozzle 9 is connected to the inside of the airbag 7 through a pipeline;

[0026] Gas can be injected into the airbag 7 through the air nozzle 9, and when the air pressure needs to be detected, a matching barometer is used to directly connect to the airbag 7, and then the air pressure detection can be performed.

[0027] Furthermore, an expansion portion is provided on the surface of the combined plate 13 near the threaded hole 16;

[0028] With this design, after the bolt is installed on the surface of the threaded hole 16 , the bolt head can enter the expansion portion, thereby preventing the bolt from affecting the normal installation of the sealing shell 17 .

[0029] Furthermore, an observation window 20 is embedded and fixed on the surface of the sealing shell 17, and the observation window 20 is made of transparent material;

[0030] The observation window 20 enables the operator to observe the internal conditions of the sealing shell 17 and thereby determine whether there is leakage between the connecting flange 3 and the external flange.

[0031] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mass flow meter with a connection anti-leakage structure, comprising a flow meter body (1), both sides of the flow meter body (1) are connected with connecting pipes (2), and the surface of the connecting pipe (2) is fixed with a connecting flange (3), characterized in that: The surface of the connecting flange (3) is provided with an inner groove, and a first sealing gasket (4) is embedded and fixed on the surface of the connecting flange (3) located above the inner groove. The surface of the connecting flange (3) is provided with two installation grooves, and a first spring (5) is fixed on the inner wall of the lower installation groove, and a first limiting plate (6) is fixed on the surface of the first spring (5). The inner wall of the upper installation groove is slidably connected with an air bag (7) and a second sealing gasket (8). The surface of the connecting flange (3) is provided with a glue injection groove (10) and a glue injection port (11). The surface of the connecting pipe (2) is fixed with a plurality of L-shaped plates (12), and a combination plate (13) is detachably connected to the surface of the L-shaped plate (12). A second spring (14) is fixed on the surface of the combination plate (13), and a second limiting plate (15) is fixed on the surface of the second spring (14). The surface of the connecting pipe (2) is provided with a closed shell (17) on both upper and lower sides, and a clamping plate (18) is fixed on the surface of the closed shell (17).

2. A mass flow meter with a connection anti-leakage structure according to claim 1, characterized in that: A blocking plate (21) is slidably connected to the surface of the second sealing gasket (8), and the blocking plate (21) is fixedly connected to the inner wall of the upper mounting groove.

3. A mass flow meter with a connection anti-leakage structure according to claim 1, characterized in that: The surfaces of the combined plate (13) and the L-shaped plate (12) are both provided with threaded holes (16), and the combined plate (13) and the L-shaped plate (12) are detachably connected by bolts through the threaded holes (16).

4. A mass flow meter with a connection anti-leakage structure according to claim 1, characterized in that: An air nozzle (9) is fixed on the surface of the connecting flange (3), and the surface of the air nozzle (9) is connected to the interior of the air bag (7) through a pipeline.

5. A mass flow meter with a connection anti-leakage structure according to claim 3, characterized in that: An expansion portion is provided on the surface of the combined plate (13) near the threaded hole (16).

6. A mass flow meter with a connection anti-leakage structure according to claim 1, characterized in that: An observation window (20) is embedded and fixed on the surface of the sealing shell (17), and the observation window (20) is made of a transparent material.

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