Conveniently replaceable vortex probe

Abstract

The utility model relates to vortex shedding flowmeter technical field discloses a can conveniently replace vortex street probe, including the cover and vortex street sensor, the bottom outer wall of cover is integrative with the slender stem, the bottom inner wall of cover is integrative with the connecting shaft in the position of slender stem right top, the vortex street sensor sets up in the cover, the vortex street sensor is connected with the connecting shaft, the bottom of cover is provided with a plurality of even distribution's fixed hole, the cover is equipped with the pressure assembly that limits to vortex street sensor. The utility model not only can replace the vortex street sensor individually when replacing, thereby solves the problem that liquid leaks when replacing vortex street sensor probe, and can make the connecting axle insert into the mandril connecting sleeve, thereby solves the reliability and stability problem of shell transmission signal, can also guarantee the reliability of vortex street sensor seal, avoids stress concentration influence internal piezoelectric ceramic signal pickup.

Description

Technical Field

[0001] This utility model relates to the field of vortex flow meter technology, and more specifically to a vortex probe that can be easily replaced. Background Technology

[0002] Vortex flow meters are volumetric flow meters that measure the volumetric flow rate, standard volumetric flow rate, or mass flow rate of gases, steam, or liquids based on the Karman vortex street principle. Vortex flow meters are characterized by low pressure loss, large measuring range, and high accuracy. When measuring volumetric flow rate under operating conditions, they are almost unaffected by parameters such as fluid density, pressure, temperature, and viscosity.

[0003] Currently, most existing vortex flow meters involve drilling a hole in the pipe, inserting and fixing the probe. When the probe fails, it cannot be replaced when the pipe is filled with liquid and under certain pressure. Otherwise, the medium in the pipe will flow out from the probe hole. In particular, for high-temperature, high-pressure, toxic and harmful media, any leakage is not allowed. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a vortex shear probe that can be easily replaced, so as to solve the problems existing in the background art.

[0005] This utility model provides the following technical solution: a replaceable vortex probe, including an outer casing and a vortex sensor. The bottom outer wall of the outer casing is integrally formed with a slender rod, and the bottom inner wall of the outer casing is integrally formed with a connecting shaft located directly above the slender rod. The vortex sensor is disposed inside the outer casing and is connected to the connecting shaft. The bottom of the outer casing has multiple evenly distributed fixing holes, and the outer casing is provided with a clamping component for limiting the position of the vortex sensor.

[0006] As a further embodiment of this utility model, the clamping assembly includes a clamping cap and an aluminum pad. The aluminum pad is disposed inside the outer casing, and a disc spring is fixedly connected to the top of the aluminum pad. The clamping cap is threadedly connected inside the outer casing, so that the clamping cap compresses the disc spring.

[0007] As a further embodiment of this utility model, the vortex sensor includes a sensor wire, a core lead-out sheath, a ceramic pressure sleeve, a spindle connecting sleeve, and an electrode plate. The connecting shaft is inserted into the spindle connecting sleeve. The core lead-out sheath is installed on the top of the ceramic pressure sleeve. The sensor core sheath is installed inside the spindle connecting sleeve. The ceramic pressure sleeve is installed inside the sensor core sheath. The sensor wire is disposed inside the core lead-out sheath, with its top end extending out of the core lead-out sheath. Epoxy resin is disposed inside the core lead-out sheath, and the sensor wire passes through the epoxy resin. The electrode plate is disposed inside the sensor core sheath, with the bottom end of the sensor wire passing through the ceramic pressure sleeve and extending into the sensor core sheath to connect with the electrode plate. Insulating ceramic is disposed on the outer side of the electrode plate. A core sealing seat is installed on the outer side of the ceramic pressure sleeve and the spindle connecting sleeve.

[0008] As a further embodiment of this utility model, an annular mounting groove is provided at the bottom of the core sealing seat, and an aluminum washer is installed in the annular mounting groove.

[0009] As a further embodiment of this utility model, the core lead-out sheath extends outward through the aluminum pad, disc spring and compression cap.

[0010] As a further embodiment of this utility model, it also includes two outer jackets, two compression caps, two vortex sensors, and two enclosed soft sleeves. The two vortex sensors are respectively disposed inside the two outer jackets, the two compression caps are respectively threaded into the outer jackets, and the two enclosed soft sleeves are respectively glued to the top of the two compression caps. The vortex sensors pass through the enclosed soft sleeves.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] 1. This utility model, by providing an outer jacket and a vortex sensor, designs the outer jacket and the vortex sensor as separate structures, so that the vortex sensor can be replaced separately when changing, thereby solving the problem of liquid leakage when replacing the vortex sensor probe.

[0013] 2. This utility model solves the problems of reliability and stability of signal transmission from the housing by providing a spindle connecting sleeve and a connecting shaft, after the vortex sensor is installed inside the outer casing, the connecting shaft is inserted into the spindle connecting sleeve.

[0014] 3. This utility model ensures the reliability of the vortex sensor's seal by incorporating a core sealing seat and an aluminum gasket, thus preventing stress concentration from affecting the signal pickup of the internal piezoelectric ceramic. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of Embodiment 1 of the present utility model.

[0016] Figure 2This is Embodiment 1 of the present utility model. Figure 1 A cross-sectional structural diagram.

[0017] Figure 3 This is a schematic diagram of the vortex shear sensor structure according to Embodiment 1 of this utility model.

[0018] Figure 4 This is Embodiment 1 of the present utility model. Figure 3 A cross-sectional structural diagram.

[0019] Figure 5 This is a schematic diagram of the structure of the lower electrode plate and the upper electrode plate in an embodiment of the present invention.

[0020] Figure 6 This is a three-dimensional structural diagram of Embodiment 2 of the present invention.

[0021] The attached diagram is labeled as follows: 1. Compression cap; 2. Outer sleeve; 3. Fixing hole; 4. Slender rod; 5. Vortex sensor; 6. Disc spring; 7. Aluminum pad; 9. Connecting shaft; 10. Sensor wire; 11. Core lead-out sleeve; 12. Epoxy resin; 13. Ceramic sleeve; 14. Core sealing seat; 15. Aluminum washer; 16. Core shaft connecting sleeve; 17. Insulating ceramic; 18. Sensor core sleeve; 19. Electrode plate; 1901. Lower electrode plate; 1902. Upper electrode plate; 20. Enclosed soft sleeve. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Example 1

[0024] Reference Figures 1-5This utility model provides a conveniently replaceable vortex sensor, including an outer casing 2 and a vortex sensor 5. A slender rod 4 is integrally formed on the bottom outer wall of the outer casing 2, and a connecting shaft 9 is integrally formed on the bottom inner wall of the outer casing 2 directly above the slender rod 4. The thickness of the sealing surface between the slender rod 4, the connecting shaft 9, and the outer casing 2 is 1mm. By processing the thickness of the sealing surface between the slender rod 4, the connecting shaft 9, and the outer casing 2 to 1mm, the problems of weak sensor signal and pressure resistance are solved. The vortex sensor 5 is disposed inside the outer casing 2 and connected to the connecting shaft 9. The bottom of the device has multiple evenly distributed fixing holes 3. The outer sleeve 2 has a clamping component that limits the vortex sensor 5. In use, the outer sleeve 2 is fixed to the pipe through the fixing holes 3, and the slender rod 4 is inserted into the pipe to perform detection. When replacement is required, the clamping component is removed from limiting the vortex sensor 5, and the vortex sensor 5 can be removed from the outer sleeve 2 for replacement. This allows the vortex sensor 5 to be replaced individually, thus solving the problem of liquid leakage when replacing the vortex sensor 5 probe.

[0025] In this utility model, the clamping assembly includes a clamping cap 1 and an aluminum pad 7. The aluminum pad 7 is disposed inside the outer casing 2. A disc spring 6 is welded to the top of the aluminum pad 7. The clamping cap 1 is threadedly connected inside the outer casing 2, so that the clamping cap 1 squeezes the disc spring 6. By squeezing the disc spring 6, the aluminum pad 7 squeezes and limits the vortex sensor 5. Thus, by setting the disc spring 6, the problem of loosening after a long time after clamping is solved. When replacement is required, the clamping cap 1 is rotated and removed from the outer casing 2. At this time, the disc spring 6 is no longer squeezed, and the vortex sensor 5 can be removed from the outer casing 2 for replacement. A U-shaped viewing window is provided on one side of the outer casing 2.

[0026] Specifically, the vortex shear sensor 5 includes a sensor wire 10, a core lead-out sleeve 11, a ceramic sleeve 13, a spindle connecting sleeve 16, and an electrode plate 19. The connecting shaft 9 is inserted into the spindle connecting sleeve 16 with an interference fit. Inserting the connecting shaft 9 into the spindle connecting sleeve 16 solves the problem of signal reliability and stability transmitted from the housing. The core lead-out sleeve 11 is installed on top of the ceramic sleeve 13. A sensor core sleeve 18 is installed inside the spindle connecting sleeve 16, and the ceramic sleeve 13 is installed inside the sensor core sleeve 18. Installing the ceramic sleeve 13 inside the sensor core sleeve 18 ensures the strength of signal transmission and solves the sensor sensitivity problem. The sensor wire 10 is located inside the core lead-out sleeve 11, with its top end extending out of the core lead-out sleeve 11. Epoxy resin 12 is provided inside the core lead-out sleeve 11, and the sensor wire 10 passes through the epoxy resin 12. Electrode 19 is disposed inside the sensor core sheath 18. Specifically, electrode 19 includes a lower electrode 1901 and an upper electrode 1902. The lower electrode 1901 is provided with two U-shaped grooves and a round hole. The upper electrode 1902 is provided with two U-shaped grooves, a round hole and a D-shaped hole. The bottom end of the sensor wire 10 passes through the ceramic pressure sleeve 13 and extends into the sensor core sheath 18 to connect with the electrode 19. The outer side of the electrode 19 is provided with insulating ceramic 17. The outer side of the ceramic pressure sleeve 13 and the spindle connecting sleeve 16 is equipped with a core sealing seat 14. The bottom of the core sealing seat 14 is provided with an annular mounting groove. An aluminum washer 15 is installed in the annular mounting groove. By selecting the core sealing seat 14 and the aluminum washer 15, the reliability of the seal is ensured and stress concentration is avoided from affecting the signal pickup of the internal piezoelectric ceramic. The core lead-out sheath 11 extends out to the outer sleeve 2 through the aluminum pad 7, the disc spring 6 and the clamping cap 1.

[0027] The working principle of this embodiment is as follows: In use, the outer sleeve 2 is fixed to the pipe through the fixing hole 3, and the slender rod 4 extends into the pipe to perform detection. When replacement is required, the clamping cap 1 is rotated with a torque wrench to remove the clamping cap 1 from the outer sleeve 2. At this time, the disc spring 6 is no longer compressed, and the vortex sensor 5 can be removed from the outer sleeve 2 for replacement. Thus, the vortex sensor 5 can be replaced separately, thereby solving the problem of liquid leakage when replacing the vortex sensor 5 probe.

[0028] Example 2

[0029] Reference Figure 6 This utility model provides a conveniently replaceable vortex probe, which also includes two outer sleeves 2, two clamping caps 1, two vortex sensors 5 and two closed soft sleeves 20. The two vortex sensors 5 are respectively disposed inside the two outer sleeves 2, the two clamping caps 1 are respectively threaded inside the outer sleeves 2, and the two closed soft sleeves 2 are respectively glued to the top of the two clamping caps 1. The vortex sensors 5 pass through the closed soft sleeves 20.

[0030] The working principle of this embodiment is as follows: When in use, the sealing soft sleeve 20 is attached to the top of the compression cap 1, and the vortex sensor 5 is passed through the sealing soft sleeve 20, so that the sealing soft sleeve 20 seals the gap between the compression cap 1 and the vortex sensor 5, thereby preventing external liquid from entering the outer sleeve 2 and damaging the vortex sensor 5.

[0031] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0032] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A replaceable vortex shear probe, comprising an outer casing (2) and a vortex shear sensor (5), characterized in that: The bottom outer wall of the outer jacket (2) is integrally formed with a slender rod (4), and the bottom inner wall of the outer jacket (2) is integrally formed with a connecting shaft (9) located directly above the slender rod (4). The vortex sensor (5) is disposed inside the outer jacket (2) and is connected to the connecting shaft (9). The bottom of the outer jacket (2) is provided with a plurality of evenly distributed fixing holes (3). The outer jacket (2) is provided with a clamping assembly for limiting the vortex sensor (5).

2. The easily replaceable vortex shear probe according to claim 1, characterized in that: The clamping assembly includes a clamping cap (1) and an aluminum pad (7). The aluminum pad (7) is disposed inside the outer sleeve (2). A disc spring (6) is fixedly connected to the top of the aluminum pad (7). The clamping cap (1) is threaded inside the outer sleeve (2) so that the clamping cap (1) squeezes the disc spring (6).

3. The easily replaceable vortex shear probe according to claim 2, characterized in that: The vortex sensor (5) includes a sensor wire (10), a core lead-out sleeve (11), a ceramic sleeve (13), a spindle connecting sleeve (16), and an electrode plate (19). The connecting shaft (9) is inserted into the spindle connecting sleeve (16). The core lead-out sleeve (11) is installed on top of the ceramic sleeve (13). The sensor core sleeve (18) is installed inside the spindle connecting sleeve (16). The ceramic sleeve (13) is installed inside the sensor core sleeve (18). The sensor wire (10) is located inside the core lead-out sleeve (11). The top of the sensor core extends out of the core wire sheath (11), and the core wire sheath (11) is filled with epoxy resin (12). The sensor wire (10) passes through the epoxy resin (12). The electrode plate (19) is set inside the sensor core sheath (18). The bottom end of the sensor wire (10) passes through the ceramic sleeve (13) and extends into the sensor core sheath (18) to connect with the electrode plate (19). The outer side of the electrode plate (19) is provided with insulating ceramic (17). The outer side of the ceramic sleeve (13) and the core shaft connecting sleeve (16) is equipped with a core sealing seat (14).

4. The easily replaceable vortex shear probe according to claim 3, characterized in that: The bottom of the core sealing seat (14) is provided with an annular mounting groove, and an aluminum washer (15) is installed in the annular mounting groove.

5. A vortex shear probe that can be easily replaced according to claim 4, characterized in that: The core lead-out sheath (11) extends out of the outer jacket (2) through the aluminum pad (7), disc spring (6) and compression cap (1).

6. A vortex shear probe that can be easily replaced according to claim 1, characterized in that: It also includes two outer jackets (2), two pressure caps (1), two vortex sensors (5) and two closed soft sleeves (20). The two vortex sensors (5) are respectively set inside the two outer jackets (2), the two pressure caps (1) are respectively threaded inside the outer jackets (2), and the two closed soft sleeves (20) are respectively glued to the top of the two pressure caps (1). The vortex sensors (5) pass through the closed soft sleeves (20).

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