Small-caliber plug-in vortex street sensor

Abstract

The utility model discloses a small-caliber plug-in vortex street sensor, which comprises a meter head, a pipeline, a vortex generating body and a probe, the top of the pipeline is fixedly connected with a fixed connection base, the fixed connection base is of a hollow structure and is communicated with the inside of the pipeline, the top of the fixed connection base is fixedly connected with a ball valve, and the ball valve is communicated with the inside of the pipeline. The top of the ball valve is fixedly connected with a sealing connecting base, a supporting rod is inserted into the sealing connecting base, the supporting rod penetrates through the ball valve and the fixed connecting base to extend into the pipeline, and the top of the supporting rod is rotationally connected with a first locking cap. The vortex street sensor is arranged to be of an inserted structure, the design is exquisite, cost is reduced, production halt installation is not needed, normal production of a user is guaranteed, heavy economic losses caused by production halt of the user are avoided, and meanwhile the characteristics that the vortex street flowmeter can measure liquid and gas and is resistant to high temperature and high pressure are reserved.

Description

Technical Field

[0001] This utility model relates to the field of instrumentation technology, and in particular to a small-diameter insertion-type vortex street sensor. Background Technology

[0002] A vortex flow meter is a velocity-type flow instrument with a wide range of applications. It is suitable for measuring and controlling the flow rate of liquids, steam, and most gases. The basic principle of a vortex flow meter is the Karman vortex street principle, which states that "the frequency of vortex separation is directly proportional to the flow velocity." An approximately isosceles triangular cylinder is inserted into the flow body, with its axis perpendicular to the flow direction of the measured medium and its base facing the fluid. When the measured medium flows through the cylinder, vortices are alternately generated on both sides of the cylinder. These vortices continuously generate and separate, forming two staggered rows of vortices downstream of the cylinder, known as a "vortex street."

[0003] Existing vortex flow meters require installation and replacement only when production is halted and there is no medium in the pipeline, failing to meet online installation requirements. Each production stoppage results in significant losses, and they are unusable on pipelines where production cannot be stopped. Other online-installed flow meters on the market lack the wide applicability of vortex flow meters, especially for small-diameter pipelines. Many other online-installed insertion flow meters are structurally limited to pipelines of DN100 and above, or even larger sizes; online-installed flow meters for small diameters are virtually nonexistent. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a small-aperture insertion-type vortex shear sensor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A small-diameter insertion-type vortex sensor includes a meter head, a pipe, a vortex generator, and a probe. A fixed connecting base is fixedly connected to the top of the pipe. The fixed connecting base has a hollow structure and communicates with the inside of the pipe. A ball valve is fixedly connected to the top of the fixed connecting base, and a sealing connecting seat is fixedly connected to the top of the ball valve. A support rod is inserted into the sealing connecting seat, and the support rod extends into the pipe through the ball valve and the fixed connecting base. A first locking cap is rotatably connected to the top of the support rod. A threaded connector is integrally formed at the bottom of the meter head, and the first locking cap is threadedly connected to the threaded connector. The vortex generator is disposed inside the pipe and fixedly connected to the bottom end of the support rod. Two O-rings are fixedly connected to the outer circumference of the support rod within the sealing connecting seat. An arc-shaped mounting groove is formed at the bottom end of the support rod, and the probe is disposed within the mounting groove. A second locking cap is rotatably connected to the top of the mounting groove, and the probe is threadedly connected to the second locking cap.

[0007] As a further embodiment of this invention, a sealing gasket is fixedly connected inside the mounting groove, and the probe passes through the sealing gasket.

[0008] As a further embodiment of this utility model, the bottom of the vortex generator is integrally formed with an arc surface that allows the vortex generator to fit against the inner wall of the pipe.

[0009] As a further embodiment of this utility model, the outer side of the support rod is integrally formed with a first thread, the outer side of the sealing connection seat is provided with a first thread, and the sealing connection seat is threadedly connected to a pressure cap through the first thread.

[0010] As a further embodiment of this utility model, a sealing ring is fixed on the outer side of the support rod, a sealing washer is provided below the sealing ring, and the sealing ring is located inside the pressure cover, so that the pressure cover presses the sealing ring.

[0011] As a further improvement of this invention, a direction indicator is fixedly connected to the outer side of the support rod.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. This utility model features an insert-type vortex sensor, which is ingeniously designed, reduces costs, and eliminates the need for production stoppages for installation, thus ensuring normal production for users and avoiding significant economic losses caused by production stoppages. At the same time, it retains the characteristics of vortex flow meters, which can measure both liquids and gases and are resistant to high temperatures and high pressures.

[0014] 2. By eliminating the measuring tube and directly connecting the vortex generator to the lower end of the support rod, the problem of the large size and inconvenient installation of the insert sensor is solved. By making notches in the vortex generator and probe holes at the connection between the vortex generator and the support rod, an integrated and detachable structure with an internal probe is created, solving the problem of integrated installation and reducing the size of the sensor.

[0015] 3. By symmetrically arranging sealing and stopping structures on the welding base, the lower end of the installed sensor is fixed and limited, solving the problem of the sensor being unstable due to the lack of a support point at the lower end of the insertion and being swept away by the medium in the pipe. By processing the connection between the vortex generator and the support rod into an arc shape that is similar to the inner wall of the pipe, the problem of measurement instability caused by abrupt openings and cylindrical interfaces disturbing the fluid is solved. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of a small-diameter insertion-type vortex shear sensor proposed in this utility model;

[0017] Figure 2This is a partial cross-sectional view of Embodiment 1 of a small-diameter insertion vortex shear sensor proposed in this utility model.

[0018] Figure 3 This is an enlarged structural diagram of part A of an embodiment 1 of a small-diameter insertion vortex shear sensor proposed in this utility model.

[0019] In the diagram: 1. Gauge head; 2. First locking cap; 3. Support rod; 4. First thread; 5. Pressure cap; 6. Ball valve; 7. Welded base; 8. Pipe; 9. Sealing connector; 10. Directional indicator; 11. Second locking cap; 12. Arc surface; 13. Vortex generator; 14. Probe; 15. Sealing gasket; 16. Threaded connector; 17. Sealing ring; 18. O-ring seal. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0021] Reference Figures 1-3 A small-diameter insertion-type vortex sensor includes a meter head 1, a pipe 8, a vortex generator 13, and a probe 14. A welding base 7 is welded to the top of the pipe 8. The welding base 7 has a hollow structure and is connected to the interior of the pipe 8. A ball valve 6 is bolted to the top of the welding base 7. By setting the ball valve 6, it remains open during insertion and closes after removal, solving the problems of online installation and easy removal. A sealing connection seat 9 is bolted to the top of the ball valve 6. A support rod 3 is inserted into the sealing connection seat 9, and the support rod 3 extends into the pipe 8 through the ball valve 6 and the welding base 7. The top is rotatably connected to a first locking cap 2, and the bottom of the meter head 1 is integrally formed with a threaded connector 16. The first locking cap 2 is threadedly connected to the threaded connector 16. The vortex generator 13 is set inside the pipe 8 and fixed to the bottom of the support rod 3 with bolts. Two O-rings 18 are bonded to the outer circumference of the support rod 3 at the position inside the sealing connection seat 9. An arc-shaped mounting groove is opened at the connection between the support rod 3 and the vortex generator 13. By processing the connection part between the vortex generator 13 and the support rod 3 into an arc shape similar to the inner wall of the pipe 8, the problem of measurement instability caused by abrupt openings and cylindrical interfaces disturbing the fluid is solved.

[0022] The probe 14 is set in the mounting groove, and the top of the mounting groove is rotatably connected to the second locking cap 11. The probe 14 is threadedly connected to the second locking cap 11. By opening a notch in the vortex generator 13 and opening a mounting groove at the connection between the vortex generator 13 and the support rod 3, an integrated and detachable structure with the probe 14 built in is made, solving the problem of integrated installation and reducing the size of the sensor. First, the probe 14 is placed in the mounting groove, and then the probe 14 is threadedly connected to the second locking cap 11, thereby installing the probe 14 in the mounting groove. Then, the vortex generator 13 is installed at the bottom end of the support rod 3. Then, the ball valve 6 is opened, and the support rod 3 is inserted into the sealing connection seat 9. The support rod 3 is inserted into the pipe 8 through the ball valve 6 and the welding base 7, allowing the vortex generator 13 and probe 14 to enter the pipe 8. Then, the meter head 1 is installed on the top of the support rod 3 through the threaded connector 16 and the first locking cap 2. The vortex sensor is set as an insertion structure, which is ingeniously designed, reduces costs, and does not require production stoppage for installation, ensuring the user's normal production and avoiding significant economic losses caused by production stoppage. At the same time, it retains the characteristics of the vortex flow meter, which can measure both liquids and gases and is resistant to high temperatures and high pressures. Furthermore, by eliminating the measuring tube and directly connecting the vortex generator 13 to the lower end of the support rod 3, the problem of the insertion sensor being large and inconvenient to install is solved.

[0023] In this utility model, a sealing gasket 15 is bonded inside the mounting groove, and the probe 14 passes through the sealing gasket 15. The bottom of the vortex generator 13 is integrally formed with an arc surface 12 that allows the vortex generator 13 to fit against the inner wall of the pipe 8. The bottom of the vortex generator 13 is machined into an arc shape that fits against the inner wall of the pipe 8, reducing the disturbance caused by the installation of the vortex generator 13. The outer side of the sealing connection seat 9 is provided with a first thread 4. The sealing connection seat 9 is threadedly connected to a pressure cover 5 through the first thread 4. A sealing ring 17 is welded to the outer side of the support rod 3. A sealing gasket is provided below the sealing ring 17, and the sealing ring 17 is located inside the pressure cover 5, so that the pressure cover 5 presses the sealing ring 17. A direction indicator 10 is fixed to the outer side of the support rod 3 by bolts.

[0024] Working principle: In use, the vortex generator 13 is welded to the bottom of the support rod 3. Then, the probe 14 is placed in the mounting groove, and the probe 14 is then threadedly connected to the second locking cap 11 to install the probe 14 in the mounting groove. Then, the meter head 1 is installed on the top of the support rod 3 through the threaded connector 16 and the first locking cap 2. The support rod 3 is inserted into the sealing connection seat 9, and two O-rings 18 form a pre-seal with the support rod 3. Then, the ball valve 6 is opened, and the support rod 3 is inserted into the pipe 8 through the ball valve 6 and the welding base 7, allowing the vortex generator 13 and the probe 14 to enter the pipe 8. Then, the pressure cap 5 is tightened to seal the support rod 3 and the sealing connection seat 9 with the sealing ring 17. The vortex sensor is set as an insertion structure, which is ingeniously designed, reduces costs, and does not require production stoppage for installation, ensuring the user's normal production and avoiding significant economic losses caused by production stoppage. At the same time, it retains the characteristics of the vortex flow meter, which can measure both liquids and gases and is resistant to high temperature and high pressure.

[0025] Furthermore, the terms "set up," "equipped with," "connected," "linked," and "socketed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

Claims

1. A small-diameter insertion-type vortex shear sensor, comprising a meter (1), a pipe (8), a vortex generator (13), and a probe (14), characterized in that, A fixed connection base (7) is fixedly connected to the top of the pipe (8). The fixed connection base (7) is a hollow structure and is connected to the inside of the pipe (8). A ball valve (6) is fixedly connected to the top of the fixed connection base (7). A sealing connection seat (9) is fixedly connected to the top of the ball valve (6). A support rod (3) is inserted into the sealing connection seat (9). The support rod (3) passes through the ball valve (6) and the fixed connection base (7) and extends into the pipe (8). A first locking cap (2) is rotatably connected to the top of the support rod (3). The bottom of the meter (1) is integral. The device has a threaded connector (16) and a first locking cap (2) is threadedly connected to the threaded connector (16). The vortex generator (13) is set inside the pipe (8) and fixedly connected to the bottom end of the support rod (3). Two O-rings (18) are fixedly connected to the outer circumference of the support rod (3) in the sealing connection seat (9). The bottom end of the support rod (3) has an arc-shaped mounting groove. The probe (14) is set in the mounting groove. The top of the mounting groove is rotatably connected to a second locking cap (11), and the probe (14) is threadedly connected to the second locking cap (11).

2. The small-aperture insertion-type vortex shear sensor according to claim 1, characterized in that, A sealing gasket (15) is fixedly connected inside the mounting groove, and the probe (14) passes through the sealing gasket (15).

3. The small-aperture insertion-type vortex shear sensor according to claim 1, characterized in that, The bottom of the vortex generator (13) is integrally formed with an arc surface (12) that allows the vortex generator (13) to fit against the inner wall of the pipe (8).

4. The small-aperture insertion-type vortex shear sensor according to claim 1, characterized in that, The sealing connector (9) has a first thread (4) on its outer side, and the sealing connector (9) is threadedly connected to a pressure cap (5) through the first thread (4).

5. A small-aperture insertion-type vortex shear sensor according to claim 4, characterized in that, A sealing ring (17) is fixed on the outside of the support rod (3). A sealing gasket is provided below the sealing ring (17), and the sealing ring (17) is located inside the pressing cover (5), so that the pressing cover (5) presses the sealing ring (17).

6. A small-aperture insertion-type vortex shear sensor according to claim 5, characterized in that, A direction indicator (10) is fixedly connected to the outside of the support rod (3).

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