Vortex street flow sensor

Abstract

The utility model discloses a vortex street flow sensor, which belongs to the technical field of vortex street flow sensors, and comprises a shell, a flow sensor main body is arranged above the shell, the outer surface of the flow sensor main body is fixedly connected with a sealing cover, and the upper surface of the shell is fixedly connected with a threaded connection ring. The outer surface of the threaded connecting ring is in threaded connection with an inner ring of a sealing cover, the outer surface of the flow sensor body is fixedly connected with a limiting ring, a first sealing gasket is fixedly embedded in the bottom surface of the limiting ring, and the bottom surface of the sealing cover is fixedly connected with a second sealing gasket; a sensor assembly is fixedly installed at the bottom end of the flow sensor body, and a detection hole is formed in the upper surface of the shell. According to the vortex street flow sensor, the sealing cover and the shell can be firmly sealed, the problem that the sealing effect is poor due to the fact that an elastic assembly is adopted for clamping, fixing and sealing between the main body and the shell of an existing flow sensor is solved, and the accuracy of medium detection is improved.

Description

Technical Field

[0001] The utility model relates to the field of vortex flow sensors, in particular to a vortex flow sensor. Background Art

[0002] The vortex flow sensor is a velocity flow meter made based on the Karman vortex street theory and the principle of natural vibration of the fluid, with piezoelectric crystals or differential capacitors as detection components. It has the advantages of no moving parts, wide measurement range, wide medium adaptability, high measurement accuracy, long calibration cycle, long signal transmission distance, and small pressure loss. It can be widely used in process measurement and energy-saving management of various single-phase liquids, gases, steam, etc. in petrochemical, urban pipeline heating, water supply, gas and other industries.

[0003] Currently, a Chinese patent with the announcement number CN219869820U discloses a vortex flow sensor, including a pipe and a display screen, wherein a fixed pipe is provided at the upper end of the pipe, and a display screen is fixedly connected to the upper end of the fixed pipe. A sensor body is provided inside the fixed pipe, and a fixing frame is fixed at the upper end of the pipe and on both sides of the fixed pipe. A hole groove for the bottom end of the sensor body to pass through is provided between the fixing frames on both sides and on the upper surface of the pipe. However, when the sensor body and the pipe are connected and installed in the above patent, an elastic component is used for clamping and fixing. It is difficult to firmly seal the connection between the two, which in turn affects the accuracy of the vortex flow sensor in detecting the medium. Therefore, those skilled in the art provide a vortex flow sensor to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the present utility model is to provide a vortex flow sensor to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A vortex flow sensor comprises a shell, a flow sensor body is provided above the shell, the outer surface of the flow sensor body is fixedly connected to a sealing cover, the upper surface of the shell is fixedly connected to a threaded connecting ring, the outer surface of the threaded connecting ring is threadedly connected to the inner ring of the sealing cover, the outer surface of the flow sensor body is fixedly connected to a limiting ring, the bottom surface of the limiting ring is fixedly inlaid with a first sealing gasket, the bottom surface of the sealing cover is fixedly connected to a second sealing gasket, the bottom end of the flow sensor body is fixedly installed with a sensor assembly, the upper surface of the shell is provided with a detection hole, the bottom end of the sensor assembly passes through the detection hole and extends to the interior of the shell, and the inner wall of the shell is fixedly installed with a retention member.

[0007] As a further solution of the present invention: an annular groove is provided on the upper surface of the shell, and the second sealing gasket is located above the annular groove.

[0008] As a further solution of the present invention: the inner wall of the sealing cover is in contact with the upper surface of the limiting ring, and the outer surface of the sealing cover is fixedly connected with a rotating plate.

[0009] As a further solution of the present invention: a sealing cover is fixedly installed on the rear end of the flow sensor body, and two threading holes are provided on the back side of the sealing cover.

[0010] As a further solution of the present invention: flanges are fixedly connected to both ends of the shell, and mounting holes arranged in a ring are provided on the side surfaces of the two flanges that are away from each other.

[0011] As a further solution of the present invention: an annular concave hole is formed on the side surfaces of the two flanges that are away from each other, and a sealing gasket is provided inside the two annular concave holes.

[0012] As a further solution of the present invention: two positioning blocks are fixedly connected to the outer surface of the flow sensor body, and the two positioning blocks are both located above the sealing cover.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The vortex flow sensor, through the limit ring and the first sealing gasket provided on the flow sensor body, cooperates with the sealing cover and the threaded connection ring, so that the sealing cover can rotate on the surface of the threaded connection ring, which will lock and fix the flow sensor body when it is installed above the housing. Through the contact between the first sealing gasket and the top of the threaded connection ring, and by utilizing the provision of the second sealing gasket, a firm seal can be achieved between the sealing cover and the housing, solving the problem of poor sealing effect of the elastic component clamping and fixing between the flow sensor body and the housing, and improving the accuracy of the vortex flow sensor in detecting media. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of a vortex flow sensor in front view;

[0016] Figure 2 It is a three-dimensional structural diagram of the rear view of a vortex flow sensor;

[0017] Figure 3 It is a cross-sectional view of a front view of a vortex flow sensor;

[0018] Figure 4 A vortex flow sensor Figure 3 A magnified schematic diagram of the structure in the middle.

[0019] In the figure: 1. Shell; 2. Flow sensor body; 3. Sealing cover; 4. Rotating plate; 5. Threaded connecting ring; 6. Second sealing gasket; 7. Annular groove; 8. First sealing gasket; 9. Limiting ring; 10. Detection hole; 11. Sensor assembly; 12. Retention part; 13. Flange; 14. Mounting hole; 15. Annular recessed hole; 16. Positioning block; 17. Sealing cover; 18. Threading hole; 19. Sealing gasket. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0022] See also Figures 1 to 4In the embodiment of the present utility model, a vortex flow sensor includes a shell 1, a flow sensor body 2 is provided above the shell 1, the outer surface of the flow sensor body 2 is fixedly connected to the sealing cover 3, the upper surface of the shell 1 is fixedly connected to the threaded connecting ring 5, the outer surface of the threaded connecting ring 5 is threadedly connected to the inner ring of the sealing cover 3, the outer surface of the flow sensor body 2 is fixedly connected to the limit ring 9, the bottom surface of the limit ring 9 is fixedly inlaid with a first sealing gasket 8, the bottom surface of the sealing cover 3 is fixedly connected to the second sealing gasket 6, the bottom end of the flow sensor body 2 is fixedly installed with a sensor assembly 11, the upper surface of the shell 1 is provided with a detection hole 10, the bottom end of the sensor assembly 11 passes through the detection hole 10 and extends to the interior of the shell 1, and the inner wall of the shell 1 is fixedly installed with a retention member 12. Through the contact between the first sealing gasket 8 and the top of the threaded connecting ring 5, and by utilizing the setting of the second sealing gasket 6, the sealing cover 3 and the shell 1 can be firmly sealed.

[0023] As a further solution of the present invention: an annular groove 7 is provided on the upper surface of the shell 1, the second sealing gasket 6 is located above the annular groove 7, the inner wall of the sealing cover 3 is in contact with the upper surface of the limit ring 9, the outer surface of the sealing cover 3 is fixedly connected to the rotating plate 4, and the rear end of the flow sensor body 2 is fixedly installed with a sealing cover 17, and two threading holes 18 are provided on the back of the sealing cover 17. Through the setting of the annular groove 7, the second sealing gasket 6 can better seal the shell 1 and the sealing cover 3. The setting of the rotating plate 4 facilitates the rotation of the sealing cover 3, and the opening of the sealing cover 17 facilitates the internal inspection and maintenance of the flow sensor body 2.

[0024] As a further solution of the present invention: the left and right ends of the shell 1 are fixedly connected with flanges 13, and the side surfaces of the two flanges 13 away from each other are provided with annular mounting holes 14, and the side surfaces of the two flanges 13 away from each other are provided with annular recessed holes 15, and the interiors of the two annular recessed holes 15 are provided with sealing gaskets 19. The outer surface of the flow sensor body 2 is fixedly connected with two positioning blocks 16, and the two positioning blocks 16 are both located above the sealing cover 3. The flanges 13 and the mounting holes 14 are used to facilitate the connection and installation of the shell 1, and the annular recessed holes 15 and the sealing gaskets 19 are used to improve the connection effect of the shell 1. Through the setting of the positioning blocks 16, the flow sensor body 2 can be hand-held and positioned to avoid the problem of the flow sensor body 2 rotating when the sealing cover 3 rotates.

[0025] The working principle of the present utility model is: when the flow sensor body 2 and the housing 1 are connected and installed, the flow sensor body 2 is first taken, and the sensor assembly 11 at the bottom of the flow sensor body 2 is passed through the detection hole 10 and inserted into the interior of the housing 1, and then the rotating plate 4 is rotated with a wrench, and the flow sensor body 2 is hand-held and positioned using the positioning block 16 to prevent the flow sensor body 2 from rotating when the sealing cover 3 rotates. Then, when the sealing cover 3 rotates downward, it can drive the first sealing gasket 8 to contact the top of the threaded connection ring 5, and the second sealing gasket 6 is inserted into the inside of the annular groove 7, and the sealing cover 3 and the housing 1 will be firmly sealed by the first sealing gasket 8 and the second sealing gasket 6.

[0026] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can make equivalent replacements or changes according to the technical solution and the utility model concept of the present invention within the technical scope disclosed by the present invention, and they should be included in the scope of protection of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0027] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A vortex flow sensor, comprising a housing (1), characterized in that: A flow sensor body (2) is provided above the housing (1), the outer surface of the flow sensor body (2) is fixedly connected to a sealing cover (3), the upper surface of the housing (1) is fixedly connected to a threaded connection ring (5), the outer surface of the threaded connection ring (5) is threadedly connected to the inner ring of the sealing cover (3), the outer surface of the flow sensor body (2) is fixedly connected to a limiting ring (9), the bottom surface of the limiting ring (9) is fixedly inlaid with a first sealing gasket (8), the bottom surface of the sealing cover (3) is fixedly connected to a second sealing gasket (6), the bottom end of the flow sensor body (2) is fixedly installed with a sensor assembly (11), the upper surface of the housing (1) is provided with a detection hole (10), the bottom end of the sensor assembly (11) passes through the detection hole (10) and extends to the interior of the housing (1), and the inner wall of the housing (1) is fixedly installed with a retention member (12).

2. A vortex flow sensor according to claim 1, characterized in that: An annular groove (7) is provided on the upper surface of the housing (1), and the second sealing gasket (6) is located above the annular groove (7).

3. A vortex flow sensor according to claim 1, characterized in that: The inner wall of the sealing cover (3) contacts the upper surface of the limiting ring (9), and the outer surface of the sealing cover (3) is fixedly connected to the rotating plate (4).

4. A vortex flow sensor according to claim 1, characterized in that: A sealing cover plate (17) is fixedly mounted on the rear end of the flow sensor body (2), and two threading holes (18) are provided on the back side of the sealing cover plate (17).

5. The vortex flow sensor according to claim 1, characterized in that: The left and right ends of the housing (1) are both fixedly connected with flanges (13), and the side surfaces of the two flanges (13) that are away from each other are both provided with mounting holes (14) arranged in an annular pattern.

6. A vortex flow sensor according to claim 5, characterized in that: An annular concave hole (15) is provided on the side surfaces of the two flanges (13) that are away from each other, and a sealing gasket (19) is provided inside the two annular concave holes (15).

7. The vortex flow sensor according to claim 1, characterized in that: Two positioning blocks (16) are fixedly connected to the outer surface of the flow sensor body (2), and the two positioning blocks (16) are both located above the sealing cover (3).

Images